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PMID |
Sentence |
1 |
16373417
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The transcription factor AP-2beta causes cell enlargement and insulin resistance in 3T3-L1 adipocytes.
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2 |
16373417
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Thus, we overexpressed the AP-2beta gene in 3T3-L1 adipocytes to clarify whether AP-2beta might play a crucial role in the pathogenesis of type 2 diabetes through dysregulation of adipocyte function.
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3 |
16373417
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Enhancement of glucose uptake by AP-2beta overexpression was attenuated by inhibitors of phospholipase C (PLC) and atypical protein kinase Czeta/lambda (PKCzeta/lambda), but not by a phosphatidylinositol 3-kinase (PI3-K) inhibitor.
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4 |
16373417
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Consistently, we found activation of PLC and atypical PKC, but not PI3-K, by AP-2beta expression.
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5 |
16373417
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Furthermore, overexpression of PLCgamma enhanced glucose uptake, and this activation was inhibited by an atypical PKC inhibitor, suggesting that the enhanced glucose uptake may be mediated through PLC and atypical PKCzeta/lambda, but not PI3-K.
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6 |
16373417
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Finally, AP-2beta overexpression was found to relate to the impaired insulin signaling.
|
7 |
16373417
|
We propose that AP-2beta is a candidate gene for producing adipocyte hypertrophy and may relate to the abnormal characteristics of adipocytes observed in obesity.
|
8 |
16373417
|
The transcription factor AP-2beta causes cell enlargement and insulin resistance in 3T3-L1 adipocytes.
|
9 |
16373417
|
Thus, we overexpressed the AP-2beta gene in 3T3-L1 adipocytes to clarify whether AP-2beta might play a crucial role in the pathogenesis of type 2 diabetes through dysregulation of adipocyte function.
|
10 |
16373417
|
Enhancement of glucose uptake by AP-2beta overexpression was attenuated by inhibitors of phospholipase C (PLC) and atypical protein kinase Czeta/lambda (PKCzeta/lambda), but not by a phosphatidylinositol 3-kinase (PI3-K) inhibitor.
|
11 |
16373417
|
Consistently, we found activation of PLC and atypical PKC, but not PI3-K, by AP-2beta expression.
|
12 |
16373417
|
Furthermore, overexpression of PLCgamma enhanced glucose uptake, and this activation was inhibited by an atypical PKC inhibitor, suggesting that the enhanced glucose uptake may be mediated through PLC and atypical PKCzeta/lambda, but not PI3-K.
|
13 |
16373417
|
Finally, AP-2beta overexpression was found to relate to the impaired insulin signaling.
|
14 |
16373417
|
We propose that AP-2beta is a candidate gene for producing adipocyte hypertrophy and may relate to the abnormal characteristics of adipocytes observed in obesity.
|
15 |
16373417
|
The transcription factor AP-2beta causes cell enlargement and insulin resistance in 3T3-L1 adipocytes.
|
16 |
16373417
|
Thus, we overexpressed the AP-2beta gene in 3T3-L1 adipocytes to clarify whether AP-2beta might play a crucial role in the pathogenesis of type 2 diabetes through dysregulation of adipocyte function.
|
17 |
16373417
|
Enhancement of glucose uptake by AP-2beta overexpression was attenuated by inhibitors of phospholipase C (PLC) and atypical protein kinase Czeta/lambda (PKCzeta/lambda), but not by a phosphatidylinositol 3-kinase (PI3-K) inhibitor.
|
18 |
16373417
|
Consistently, we found activation of PLC and atypical PKC, but not PI3-K, by AP-2beta expression.
|
19 |
16373417
|
Furthermore, overexpression of PLCgamma enhanced glucose uptake, and this activation was inhibited by an atypical PKC inhibitor, suggesting that the enhanced glucose uptake may be mediated through PLC and atypical PKCzeta/lambda, but not PI3-K.
|
20 |
16373417
|
Finally, AP-2beta overexpression was found to relate to the impaired insulin signaling.
|
21 |
16373417
|
We propose that AP-2beta is a candidate gene for producing adipocyte hypertrophy and may relate to the abnormal characteristics of adipocytes observed in obesity.
|
22 |
16373417
|
The transcription factor AP-2beta causes cell enlargement and insulin resistance in 3T3-L1 adipocytes.
|
23 |
16373417
|
Thus, we overexpressed the AP-2beta gene in 3T3-L1 adipocytes to clarify whether AP-2beta might play a crucial role in the pathogenesis of type 2 diabetes through dysregulation of adipocyte function.
|
24 |
16373417
|
Enhancement of glucose uptake by AP-2beta overexpression was attenuated by inhibitors of phospholipase C (PLC) and atypical protein kinase Czeta/lambda (PKCzeta/lambda), but not by a phosphatidylinositol 3-kinase (PI3-K) inhibitor.
|
25 |
16373417
|
Consistently, we found activation of PLC and atypical PKC, but not PI3-K, by AP-2beta expression.
|
26 |
16373417
|
Furthermore, overexpression of PLCgamma enhanced glucose uptake, and this activation was inhibited by an atypical PKC inhibitor, suggesting that the enhanced glucose uptake may be mediated through PLC and atypical PKCzeta/lambda, but not PI3-K.
|
27 |
16373417
|
Finally, AP-2beta overexpression was found to relate to the impaired insulin signaling.
|
28 |
16373417
|
We propose that AP-2beta is a candidate gene for producing adipocyte hypertrophy and may relate to the abnormal characteristics of adipocytes observed in obesity.
|
29 |
16373417
|
The transcription factor AP-2beta causes cell enlargement and insulin resistance in 3T3-L1 adipocytes.
|
30 |
16373417
|
Thus, we overexpressed the AP-2beta gene in 3T3-L1 adipocytes to clarify whether AP-2beta might play a crucial role in the pathogenesis of type 2 diabetes through dysregulation of adipocyte function.
|
31 |
16373417
|
Enhancement of glucose uptake by AP-2beta overexpression was attenuated by inhibitors of phospholipase C (PLC) and atypical protein kinase Czeta/lambda (PKCzeta/lambda), but not by a phosphatidylinositol 3-kinase (PI3-K) inhibitor.
|
32 |
16373417
|
Consistently, we found activation of PLC and atypical PKC, but not PI3-K, by AP-2beta expression.
|
33 |
16373417
|
Furthermore, overexpression of PLCgamma enhanced glucose uptake, and this activation was inhibited by an atypical PKC inhibitor, suggesting that the enhanced glucose uptake may be mediated through PLC and atypical PKCzeta/lambda, but not PI3-K.
|
34 |
16373417
|
Finally, AP-2beta overexpression was found to relate to the impaired insulin signaling.
|
35 |
16373417
|
We propose that AP-2beta is a candidate gene for producing adipocyte hypertrophy and may relate to the abnormal characteristics of adipocytes observed in obesity.
|
36 |
16373417
|
The transcription factor AP-2beta causes cell enlargement and insulin resistance in 3T3-L1 adipocytes.
|
37 |
16373417
|
Thus, we overexpressed the AP-2beta gene in 3T3-L1 adipocytes to clarify whether AP-2beta might play a crucial role in the pathogenesis of type 2 diabetes through dysregulation of adipocyte function.
|
38 |
16373417
|
Enhancement of glucose uptake by AP-2beta overexpression was attenuated by inhibitors of phospholipase C (PLC) and atypical protein kinase Czeta/lambda (PKCzeta/lambda), but not by a phosphatidylinositol 3-kinase (PI3-K) inhibitor.
|
39 |
16373417
|
Consistently, we found activation of PLC and atypical PKC, but not PI3-K, by AP-2beta expression.
|
40 |
16373417
|
Furthermore, overexpression of PLCgamma enhanced glucose uptake, and this activation was inhibited by an atypical PKC inhibitor, suggesting that the enhanced glucose uptake may be mediated through PLC and atypical PKCzeta/lambda, but not PI3-K.
|
41 |
16373417
|
Finally, AP-2beta overexpression was found to relate to the impaired insulin signaling.
|
42 |
16373417
|
We propose that AP-2beta is a candidate gene for producing adipocyte hypertrophy and may relate to the abnormal characteristics of adipocytes observed in obesity.
|
43 |
16954217
|
Furthermore, overexpression of AP-2beta leads to lipid accumulation by enhancing glucose transport and inducing insulin resistance in 3T3-L1 adipocytes.
|
44 |
16954217
|
In this study we demonstrated that overexpression of AP-2beta in 3T3-L1 adipocytes decreased the expression and secretion of adiponectin and increased those of interleukin-6 (IL-6).
|
45 |
16954217
|
Interestingly, the effects of AP-2beta on the expressions of adiponectin and IL-6 and the mechanisms by which AP-2beta modulated their expressions were different.
|
46 |
16954217
|
We found that the promoter activity of adiponectin gene was inhibited by AP-2beta overexpression and enhanced by knockdown of endogenous AP-2beta, whereas IL-6 was unaffected.
|
47 |
16954217
|
Electrophoretic mobility shift assays revealed the existence of putative responsive elements for AP-2beta and NF-YA in human and mouse adiponectin promoter regions, and mutation of this AP-2beta binding site abolished the inhibitory effect of AP-2beta.
|
48 |
16954217
|
Furthermore, chromatin immunoprecipitation assays demonstrated that AP-2beta and NF-YA competitively bind to the same region of the adiponectin promoter.
|
49 |
16954217
|
Our results clearly demonstrated that AP-2beta directly inhibits adiponectin gene expression by displacing NF-YA and binding to its promoter.
|
50 |
16954217
|
We conclude that AP-2beta might modulate the expression of adiponectin by directly inhibiting its transcriptional activity.
|
51 |
16954217
|
Furthermore, overexpression of AP-2beta leads to lipid accumulation by enhancing glucose transport and inducing insulin resistance in 3T3-L1 adipocytes.
|
52 |
16954217
|
In this study we demonstrated that overexpression of AP-2beta in 3T3-L1 adipocytes decreased the expression and secretion of adiponectin and increased those of interleukin-6 (IL-6).
|
53 |
16954217
|
Interestingly, the effects of AP-2beta on the expressions of adiponectin and IL-6 and the mechanisms by which AP-2beta modulated their expressions were different.
|
54 |
16954217
|
We found that the promoter activity of adiponectin gene was inhibited by AP-2beta overexpression and enhanced by knockdown of endogenous AP-2beta, whereas IL-6 was unaffected.
|
55 |
16954217
|
Electrophoretic mobility shift assays revealed the existence of putative responsive elements for AP-2beta and NF-YA in human and mouse adiponectin promoter regions, and mutation of this AP-2beta binding site abolished the inhibitory effect of AP-2beta.
|
56 |
16954217
|
Furthermore, chromatin immunoprecipitation assays demonstrated that AP-2beta and NF-YA competitively bind to the same region of the adiponectin promoter.
|
57 |
16954217
|
Our results clearly demonstrated that AP-2beta directly inhibits adiponectin gene expression by displacing NF-YA and binding to its promoter.
|
58 |
16954217
|
We conclude that AP-2beta might modulate the expression of adiponectin by directly inhibiting its transcriptional activity.
|
59 |
16954217
|
Furthermore, overexpression of AP-2beta leads to lipid accumulation by enhancing glucose transport and inducing insulin resistance in 3T3-L1 adipocytes.
|
60 |
16954217
|
In this study we demonstrated that overexpression of AP-2beta in 3T3-L1 adipocytes decreased the expression and secretion of adiponectin and increased those of interleukin-6 (IL-6).
|
61 |
16954217
|
Interestingly, the effects of AP-2beta on the expressions of adiponectin and IL-6 and the mechanisms by which AP-2beta modulated their expressions were different.
|
62 |
16954217
|
We found that the promoter activity of adiponectin gene was inhibited by AP-2beta overexpression and enhanced by knockdown of endogenous AP-2beta, whereas IL-6 was unaffected.
|
63 |
16954217
|
Electrophoretic mobility shift assays revealed the existence of putative responsive elements for AP-2beta and NF-YA in human and mouse adiponectin promoter regions, and mutation of this AP-2beta binding site abolished the inhibitory effect of AP-2beta.
|
64 |
16954217
|
Furthermore, chromatin immunoprecipitation assays demonstrated that AP-2beta and NF-YA competitively bind to the same region of the adiponectin promoter.
|
65 |
16954217
|
Our results clearly demonstrated that AP-2beta directly inhibits adiponectin gene expression by displacing NF-YA and binding to its promoter.
|
66 |
16954217
|
We conclude that AP-2beta might modulate the expression of adiponectin by directly inhibiting its transcriptional activity.
|
67 |
16954217
|
Furthermore, overexpression of AP-2beta leads to lipid accumulation by enhancing glucose transport and inducing insulin resistance in 3T3-L1 adipocytes.
|
68 |
16954217
|
In this study we demonstrated that overexpression of AP-2beta in 3T3-L1 adipocytes decreased the expression and secretion of adiponectin and increased those of interleukin-6 (IL-6).
|
69 |
16954217
|
Interestingly, the effects of AP-2beta on the expressions of adiponectin and IL-6 and the mechanisms by which AP-2beta modulated their expressions were different.
|
70 |
16954217
|
We found that the promoter activity of adiponectin gene was inhibited by AP-2beta overexpression and enhanced by knockdown of endogenous AP-2beta, whereas IL-6 was unaffected.
|
71 |
16954217
|
Electrophoretic mobility shift assays revealed the existence of putative responsive elements for AP-2beta and NF-YA in human and mouse adiponectin promoter regions, and mutation of this AP-2beta binding site abolished the inhibitory effect of AP-2beta.
|
72 |
16954217
|
Furthermore, chromatin immunoprecipitation assays demonstrated that AP-2beta and NF-YA competitively bind to the same region of the adiponectin promoter.
|
73 |
16954217
|
Our results clearly demonstrated that AP-2beta directly inhibits adiponectin gene expression by displacing NF-YA and binding to its promoter.
|
74 |
16954217
|
We conclude that AP-2beta might modulate the expression of adiponectin by directly inhibiting its transcriptional activity.
|
75 |
16954217
|
Furthermore, overexpression of AP-2beta leads to lipid accumulation by enhancing glucose transport and inducing insulin resistance in 3T3-L1 adipocytes.
|
76 |
16954217
|
In this study we demonstrated that overexpression of AP-2beta in 3T3-L1 adipocytes decreased the expression and secretion of adiponectin and increased those of interleukin-6 (IL-6).
|
77 |
16954217
|
Interestingly, the effects of AP-2beta on the expressions of adiponectin and IL-6 and the mechanisms by which AP-2beta modulated their expressions were different.
|
78 |
16954217
|
We found that the promoter activity of adiponectin gene was inhibited by AP-2beta overexpression and enhanced by knockdown of endogenous AP-2beta, whereas IL-6 was unaffected.
|
79 |
16954217
|
Electrophoretic mobility shift assays revealed the existence of putative responsive elements for AP-2beta and NF-YA in human and mouse adiponectin promoter regions, and mutation of this AP-2beta binding site abolished the inhibitory effect of AP-2beta.
|
80 |
16954217
|
Furthermore, chromatin immunoprecipitation assays demonstrated that AP-2beta and NF-YA competitively bind to the same region of the adiponectin promoter.
|
81 |
16954217
|
Our results clearly demonstrated that AP-2beta directly inhibits adiponectin gene expression by displacing NF-YA and binding to its promoter.
|
82 |
16954217
|
We conclude that AP-2beta might modulate the expression of adiponectin by directly inhibiting its transcriptional activity.
|
83 |
16954217
|
Furthermore, overexpression of AP-2beta leads to lipid accumulation by enhancing glucose transport and inducing insulin resistance in 3T3-L1 adipocytes.
|
84 |
16954217
|
In this study we demonstrated that overexpression of AP-2beta in 3T3-L1 adipocytes decreased the expression and secretion of adiponectin and increased those of interleukin-6 (IL-6).
|
85 |
16954217
|
Interestingly, the effects of AP-2beta on the expressions of adiponectin and IL-6 and the mechanisms by which AP-2beta modulated their expressions were different.
|
86 |
16954217
|
We found that the promoter activity of adiponectin gene was inhibited by AP-2beta overexpression and enhanced by knockdown of endogenous AP-2beta, whereas IL-6 was unaffected.
|
87 |
16954217
|
Electrophoretic mobility shift assays revealed the existence of putative responsive elements for AP-2beta and NF-YA in human and mouse adiponectin promoter regions, and mutation of this AP-2beta binding site abolished the inhibitory effect of AP-2beta.
|
88 |
16954217
|
Furthermore, chromatin immunoprecipitation assays demonstrated that AP-2beta and NF-YA competitively bind to the same region of the adiponectin promoter.
|
89 |
16954217
|
Our results clearly demonstrated that AP-2beta directly inhibits adiponectin gene expression by displacing NF-YA and binding to its promoter.
|
90 |
16954217
|
We conclude that AP-2beta might modulate the expression of adiponectin by directly inhibiting its transcriptional activity.
|
91 |
16954217
|
Furthermore, overexpression of AP-2beta leads to lipid accumulation by enhancing glucose transport and inducing insulin resistance in 3T3-L1 adipocytes.
|
92 |
16954217
|
In this study we demonstrated that overexpression of AP-2beta in 3T3-L1 adipocytes decreased the expression and secretion of adiponectin and increased those of interleukin-6 (IL-6).
|
93 |
16954217
|
Interestingly, the effects of AP-2beta on the expressions of adiponectin and IL-6 and the mechanisms by which AP-2beta modulated their expressions were different.
|
94 |
16954217
|
We found that the promoter activity of adiponectin gene was inhibited by AP-2beta overexpression and enhanced by knockdown of endogenous AP-2beta, whereas IL-6 was unaffected.
|
95 |
16954217
|
Electrophoretic mobility shift assays revealed the existence of putative responsive elements for AP-2beta and NF-YA in human and mouse adiponectin promoter regions, and mutation of this AP-2beta binding site abolished the inhibitory effect of AP-2beta.
|
96 |
16954217
|
Furthermore, chromatin immunoprecipitation assays demonstrated that AP-2beta and NF-YA competitively bind to the same region of the adiponectin promoter.
|
97 |
16954217
|
Our results clearly demonstrated that AP-2beta directly inhibits adiponectin gene expression by displacing NF-YA and binding to its promoter.
|
98 |
16954217
|
We conclude that AP-2beta might modulate the expression of adiponectin by directly inhibiting its transcriptional activity.
|
99 |
16954217
|
Furthermore, overexpression of AP-2beta leads to lipid accumulation by enhancing glucose transport and inducing insulin resistance in 3T3-L1 adipocytes.
|
100 |
16954217
|
In this study we demonstrated that overexpression of AP-2beta in 3T3-L1 adipocytes decreased the expression and secretion of adiponectin and increased those of interleukin-6 (IL-6).
|
101 |
16954217
|
Interestingly, the effects of AP-2beta on the expressions of adiponectin and IL-6 and the mechanisms by which AP-2beta modulated their expressions were different.
|
102 |
16954217
|
We found that the promoter activity of adiponectin gene was inhibited by AP-2beta overexpression and enhanced by knockdown of endogenous AP-2beta, whereas IL-6 was unaffected.
|
103 |
16954217
|
Electrophoretic mobility shift assays revealed the existence of putative responsive elements for AP-2beta and NF-YA in human and mouse adiponectin promoter regions, and mutation of this AP-2beta binding site abolished the inhibitory effect of AP-2beta.
|
104 |
16954217
|
Furthermore, chromatin immunoprecipitation assays demonstrated that AP-2beta and NF-YA competitively bind to the same region of the adiponectin promoter.
|
105 |
16954217
|
Our results clearly demonstrated that AP-2beta directly inhibits adiponectin gene expression by displacing NF-YA and binding to its promoter.
|
106 |
16954217
|
We conclude that AP-2beta might modulate the expression of adiponectin by directly inhibiting its transcriptional activity.
|
107 |
19022887
|
Furthermore, overexpression of AP-2beta leads to lipid accumulation by enhancing glucose transport and inducing insulin resistance in 3T3-L1 adipocytes.
|
108 |
19022887
|
In this study, we found that overexpression of AP-2beta in 3T3-L1 adipocytes accelerated the promoter activity of monocyte chemoattractant protein-1 (MCP-1) and subsequently increased both mRNA and protein expression and protein secretion.
|
109 |
19022887
|
Furthermore, knockdown of endogenous AP-2beta by RNA interference reduced the mRNA and the protein expression of MCP-1.
|
110 |
19022887
|
EMSAs and chromatin immunoprecipitation assays revealed specific binding of AP-2beta to MCP-1 promoter regions, in vitro and in vivo.
|
111 |
19022887
|
Additionally, site-directed mutagenesis of the AP-2 binding site located at -137 to -129 relative to the transcription start site markedly diminished MCP-1 promoter activity, whereas other putative AP-2 binding sites did not.
|
112 |
19022887
|
Our results clearly show that AP-2beta directly enhanced MCP-1 secretion by binding to its promoter.
|
113 |
19022887
|
Thus, we propose that AP-2beta positively regulates MCP-1 expression; subsequently contributes to the infiltration of macrophages to adipose tissue; and leads to insulin resistance, type 2 diabetes, and cardiovascular diseases.
|
114 |
19022887
|
Furthermore, overexpression of AP-2beta leads to lipid accumulation by enhancing glucose transport and inducing insulin resistance in 3T3-L1 adipocytes.
|
115 |
19022887
|
In this study, we found that overexpression of AP-2beta in 3T3-L1 adipocytes accelerated the promoter activity of monocyte chemoattractant protein-1 (MCP-1) and subsequently increased both mRNA and protein expression and protein secretion.
|
116 |
19022887
|
Furthermore, knockdown of endogenous AP-2beta by RNA interference reduced the mRNA and the protein expression of MCP-1.
|
117 |
19022887
|
EMSAs and chromatin immunoprecipitation assays revealed specific binding of AP-2beta to MCP-1 promoter regions, in vitro and in vivo.
|
118 |
19022887
|
Additionally, site-directed mutagenesis of the AP-2 binding site located at -137 to -129 relative to the transcription start site markedly diminished MCP-1 promoter activity, whereas other putative AP-2 binding sites did not.
|
119 |
19022887
|
Our results clearly show that AP-2beta directly enhanced MCP-1 secretion by binding to its promoter.
|
120 |
19022887
|
Thus, we propose that AP-2beta positively regulates MCP-1 expression; subsequently contributes to the infiltration of macrophages to adipose tissue; and leads to insulin resistance, type 2 diabetes, and cardiovascular diseases.
|
121 |
19022887
|
Furthermore, overexpression of AP-2beta leads to lipid accumulation by enhancing glucose transport and inducing insulin resistance in 3T3-L1 adipocytes.
|
122 |
19022887
|
In this study, we found that overexpression of AP-2beta in 3T3-L1 adipocytes accelerated the promoter activity of monocyte chemoattractant protein-1 (MCP-1) and subsequently increased both mRNA and protein expression and protein secretion.
|
123 |
19022887
|
Furthermore, knockdown of endogenous AP-2beta by RNA interference reduced the mRNA and the protein expression of MCP-1.
|
124 |
19022887
|
EMSAs and chromatin immunoprecipitation assays revealed specific binding of AP-2beta to MCP-1 promoter regions, in vitro and in vivo.
|
125 |
19022887
|
Additionally, site-directed mutagenesis of the AP-2 binding site located at -137 to -129 relative to the transcription start site markedly diminished MCP-1 promoter activity, whereas other putative AP-2 binding sites did not.
|
126 |
19022887
|
Our results clearly show that AP-2beta directly enhanced MCP-1 secretion by binding to its promoter.
|
127 |
19022887
|
Thus, we propose that AP-2beta positively regulates MCP-1 expression; subsequently contributes to the infiltration of macrophages to adipose tissue; and leads to insulin resistance, type 2 diabetes, and cardiovascular diseases.
|
128 |
19022887
|
Furthermore, overexpression of AP-2beta leads to lipid accumulation by enhancing glucose transport and inducing insulin resistance in 3T3-L1 adipocytes.
|
129 |
19022887
|
In this study, we found that overexpression of AP-2beta in 3T3-L1 adipocytes accelerated the promoter activity of monocyte chemoattractant protein-1 (MCP-1) and subsequently increased both mRNA and protein expression and protein secretion.
|
130 |
19022887
|
Furthermore, knockdown of endogenous AP-2beta by RNA interference reduced the mRNA and the protein expression of MCP-1.
|
131 |
19022887
|
EMSAs and chromatin immunoprecipitation assays revealed specific binding of AP-2beta to MCP-1 promoter regions, in vitro and in vivo.
|
132 |
19022887
|
Additionally, site-directed mutagenesis of the AP-2 binding site located at -137 to -129 relative to the transcription start site markedly diminished MCP-1 promoter activity, whereas other putative AP-2 binding sites did not.
|
133 |
19022887
|
Our results clearly show that AP-2beta directly enhanced MCP-1 secretion by binding to its promoter.
|
134 |
19022887
|
Thus, we propose that AP-2beta positively regulates MCP-1 expression; subsequently contributes to the infiltration of macrophages to adipose tissue; and leads to insulin resistance, type 2 diabetes, and cardiovascular diseases.
|
135 |
19022887
|
Furthermore, overexpression of AP-2beta leads to lipid accumulation by enhancing glucose transport and inducing insulin resistance in 3T3-L1 adipocytes.
|
136 |
19022887
|
In this study, we found that overexpression of AP-2beta in 3T3-L1 adipocytes accelerated the promoter activity of monocyte chemoattractant protein-1 (MCP-1) and subsequently increased both mRNA and protein expression and protein secretion.
|
137 |
19022887
|
Furthermore, knockdown of endogenous AP-2beta by RNA interference reduced the mRNA and the protein expression of MCP-1.
|
138 |
19022887
|
EMSAs and chromatin immunoprecipitation assays revealed specific binding of AP-2beta to MCP-1 promoter regions, in vitro and in vivo.
|
139 |
19022887
|
Additionally, site-directed mutagenesis of the AP-2 binding site located at -137 to -129 relative to the transcription start site markedly diminished MCP-1 promoter activity, whereas other putative AP-2 binding sites did not.
|
140 |
19022887
|
Our results clearly show that AP-2beta directly enhanced MCP-1 secretion by binding to its promoter.
|
141 |
19022887
|
Thus, we propose that AP-2beta positively regulates MCP-1 expression; subsequently contributes to the infiltration of macrophages to adipose tissue; and leads to insulin resistance, type 2 diabetes, and cardiovascular diseases.
|
142 |
19022887
|
Furthermore, overexpression of AP-2beta leads to lipid accumulation by enhancing glucose transport and inducing insulin resistance in 3T3-L1 adipocytes.
|
143 |
19022887
|
In this study, we found that overexpression of AP-2beta in 3T3-L1 adipocytes accelerated the promoter activity of monocyte chemoattractant protein-1 (MCP-1) and subsequently increased both mRNA and protein expression and protein secretion.
|
144 |
19022887
|
Furthermore, knockdown of endogenous AP-2beta by RNA interference reduced the mRNA and the protein expression of MCP-1.
|
145 |
19022887
|
EMSAs and chromatin immunoprecipitation assays revealed specific binding of AP-2beta to MCP-1 promoter regions, in vitro and in vivo.
|
146 |
19022887
|
Additionally, site-directed mutagenesis of the AP-2 binding site located at -137 to -129 relative to the transcription start site markedly diminished MCP-1 promoter activity, whereas other putative AP-2 binding sites did not.
|
147 |
19022887
|
Our results clearly show that AP-2beta directly enhanced MCP-1 secretion by binding to its promoter.
|
148 |
19022887
|
Thus, we propose that AP-2beta positively regulates MCP-1 expression; subsequently contributes to the infiltration of macrophages to adipose tissue; and leads to insulin resistance, type 2 diabetes, and cardiovascular diseases.
|
149 |
19596470
|
Transcription factor AP-2beta inhibits glucose-induced insulin secretion in cultured insulin-secreting cell-line.
|
150 |
20065963
|
Transcription factor AP-2beta inhibits expression and secretion of leptin, an insulin-sensitizing hormone, in 3T3-L1 adipocytes.
|
151 |
20097161
|
Transcription factor AP-2beta: a negative regulator of IRS-1 gene expression.
|
152 |
20097161
|
However, few studies have investigated the transcriptional regulation of IRS-1 in the pathogenesis of insulin resistance.
|
153 |
20097161
|
Overexpression of AP-2beta leads to adipocyte hypertrophy, directly inhibits adiponectin expression, and enhanced the expression of inflammatory adipokines such as IL-6 and MCP-1.
|
154 |
20097161
|
In this study, we found that overexpression of AP-2beta in 3T3-L1 adipocytes impaired the promoter activity of IRS-1, and subsequently decreased mRNA and protein expression.
|
155 |
20097161
|
Electrophoretic mobility shift assays showed that AP-2beta bound specifically to the IRS-1 promoter region.
|
156 |
20097161
|
Furthermore, site-directed mutagenesis of the AP-2 binding site located at -362 to -351, relative to the transcription start site, markedly decreased AP-2-induced suppression of IRS-1 promoter activity, whereas other putative AP-2 binding sites did not.
|
157 |
20097161
|
Our results clearly showed that AP-2beta directly decreased IRS-1 expression by binding to its promoter.
|
158 |
20097161
|
Based on these findings, we speculate that the AP-2beta transcriptional factor is a unique regulator of IRS-1 and a candidate gene for insulin resistance.
|
159 |
20097161
|
Transcription factor AP-2beta: a negative regulator of IRS-1 gene expression.
|
160 |
20097161
|
However, few studies have investigated the transcriptional regulation of IRS-1 in the pathogenesis of insulin resistance.
|
161 |
20097161
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Overexpression of AP-2beta leads to adipocyte hypertrophy, directly inhibits adiponectin expression, and enhanced the expression of inflammatory adipokines such as IL-6 and MCP-1.
|
162 |
20097161
|
In this study, we found that overexpression of AP-2beta in 3T3-L1 adipocytes impaired the promoter activity of IRS-1, and subsequently decreased mRNA and protein expression.
|
163 |
20097161
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Electrophoretic mobility shift assays showed that AP-2beta bound specifically to the IRS-1 promoter region.
|
164 |
20097161
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Furthermore, site-directed mutagenesis of the AP-2 binding site located at -362 to -351, relative to the transcription start site, markedly decreased AP-2-induced suppression of IRS-1 promoter activity, whereas other putative AP-2 binding sites did not.
|
165 |
20097161
|
Our results clearly showed that AP-2beta directly decreased IRS-1 expression by binding to its promoter.
|
166 |
20097161
|
Based on these findings, we speculate that the AP-2beta transcriptional factor is a unique regulator of IRS-1 and a candidate gene for insulin resistance.
|
167 |
20097161
|
Transcription factor AP-2beta: a negative regulator of IRS-1 gene expression.
|
168 |
20097161
|
However, few studies have investigated the transcriptional regulation of IRS-1 in the pathogenesis of insulin resistance.
|
169 |
20097161
|
Overexpression of AP-2beta leads to adipocyte hypertrophy, directly inhibits adiponectin expression, and enhanced the expression of inflammatory adipokines such as IL-6 and MCP-1.
|
170 |
20097161
|
In this study, we found that overexpression of AP-2beta in 3T3-L1 adipocytes impaired the promoter activity of IRS-1, and subsequently decreased mRNA and protein expression.
|
171 |
20097161
|
Electrophoretic mobility shift assays showed that AP-2beta bound specifically to the IRS-1 promoter region.
|
172 |
20097161
|
Furthermore, site-directed mutagenesis of the AP-2 binding site located at -362 to -351, relative to the transcription start site, markedly decreased AP-2-induced suppression of IRS-1 promoter activity, whereas other putative AP-2 binding sites did not.
|
173 |
20097161
|
Our results clearly showed that AP-2beta directly decreased IRS-1 expression by binding to its promoter.
|
174 |
20097161
|
Based on these findings, we speculate that the AP-2beta transcriptional factor is a unique regulator of IRS-1 and a candidate gene for insulin resistance.
|
175 |
20097161
|
Transcription factor AP-2beta: a negative regulator of IRS-1 gene expression.
|
176 |
20097161
|
However, few studies have investigated the transcriptional regulation of IRS-1 in the pathogenesis of insulin resistance.
|
177 |
20097161
|
Overexpression of AP-2beta leads to adipocyte hypertrophy, directly inhibits adiponectin expression, and enhanced the expression of inflammatory adipokines such as IL-6 and MCP-1.
|
178 |
20097161
|
In this study, we found that overexpression of AP-2beta in 3T3-L1 adipocytes impaired the promoter activity of IRS-1, and subsequently decreased mRNA and protein expression.
|
179 |
20097161
|
Electrophoretic mobility shift assays showed that AP-2beta bound specifically to the IRS-1 promoter region.
|
180 |
20097161
|
Furthermore, site-directed mutagenesis of the AP-2 binding site located at -362 to -351, relative to the transcription start site, markedly decreased AP-2-induced suppression of IRS-1 promoter activity, whereas other putative AP-2 binding sites did not.
|
181 |
20097161
|
Our results clearly showed that AP-2beta directly decreased IRS-1 expression by binding to its promoter.
|
182 |
20097161
|
Based on these findings, we speculate that the AP-2beta transcriptional factor is a unique regulator of IRS-1 and a candidate gene for insulin resistance.
|
183 |
20097161
|
Transcription factor AP-2beta: a negative regulator of IRS-1 gene expression.
|
184 |
20097161
|
However, few studies have investigated the transcriptional regulation of IRS-1 in the pathogenesis of insulin resistance.
|
185 |
20097161
|
Overexpression of AP-2beta leads to adipocyte hypertrophy, directly inhibits adiponectin expression, and enhanced the expression of inflammatory adipokines such as IL-6 and MCP-1.
|
186 |
20097161
|
In this study, we found that overexpression of AP-2beta in 3T3-L1 adipocytes impaired the promoter activity of IRS-1, and subsequently decreased mRNA and protein expression.
|
187 |
20097161
|
Electrophoretic mobility shift assays showed that AP-2beta bound specifically to the IRS-1 promoter region.
|
188 |
20097161
|
Furthermore, site-directed mutagenesis of the AP-2 binding site located at -362 to -351, relative to the transcription start site, markedly decreased AP-2-induced suppression of IRS-1 promoter activity, whereas other putative AP-2 binding sites did not.
|
189 |
20097161
|
Our results clearly showed that AP-2beta directly decreased IRS-1 expression by binding to its promoter.
|
190 |
20097161
|
Based on these findings, we speculate that the AP-2beta transcriptional factor is a unique regulator of IRS-1 and a candidate gene for insulin resistance.
|
191 |
20097161
|
Transcription factor AP-2beta: a negative regulator of IRS-1 gene expression.
|
192 |
20097161
|
However, few studies have investigated the transcriptional regulation of IRS-1 in the pathogenesis of insulin resistance.
|
193 |
20097161
|
Overexpression of AP-2beta leads to adipocyte hypertrophy, directly inhibits adiponectin expression, and enhanced the expression of inflammatory adipokines such as IL-6 and MCP-1.
|
194 |
20097161
|
In this study, we found that overexpression of AP-2beta in 3T3-L1 adipocytes impaired the promoter activity of IRS-1, and subsequently decreased mRNA and protein expression.
|
195 |
20097161
|
Electrophoretic mobility shift assays showed that AP-2beta bound specifically to the IRS-1 promoter region.
|
196 |
20097161
|
Furthermore, site-directed mutagenesis of the AP-2 binding site located at -362 to -351, relative to the transcription start site, markedly decreased AP-2-induced suppression of IRS-1 promoter activity, whereas other putative AP-2 binding sites did not.
|
197 |
20097161
|
Our results clearly showed that AP-2beta directly decreased IRS-1 expression by binding to its promoter.
|
198 |
20097161
|
Based on these findings, we speculate that the AP-2beta transcriptional factor is a unique regulator of IRS-1 and a candidate gene for insulin resistance.
|