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PMID |
Sentence |
1 |
12368292
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Therefore, MafA is a beta-cell-specific and glucose-regulated transcriptional activator for insulin gene expression and thus may be involved in the function and development of beta-cells as well as in the pathogenesis of diabetes.
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2 |
16505238
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These data suggest that low-potency PARP inhibitors increase insulin biosynthesis, in part, through a mechanism involving increased MafA gene transcription.
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3 |
17583797
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These data suggest that IL-1beta through MEKK1 inhibits INS transcription and does so, at least in part, by decreasing MafA transcriptional activity at the RIPE3b control element.
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4 |
17938503
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MafA is a recently isolated beta-cell-specific transcription factor which functions as a potent activator of insulin gene transcription.
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5 |
20424231
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Consistent with these results, overexpression of c-Jun significantly decreased MafA expression, accompanied by suppression of insulin expression.
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6 |
20424231
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These results indicate that the decreased insulin biosynthesis induced by c-Jun is principally mediated by the suppression of MafA activity.
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7 |
20424231
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It is likely that the augmented expression of c-Jun in diabetic islets decreases MafA expression and thereby reduces insulin biosynthesis, which is often observed in type 2 diabetes.
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8 |
15944145
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This study was designed to assess whether palmitate alters the expression and binding activity of the key regulatory factors pancreas-duodenum homeobox-1 (PDX-1), MafA, and Beta2, which respectively bind to the A3, C1, and E1 elements in the proximal region of the insulin promoter.
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9 |
15944145
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Combined adenovirus-mediated overexpression of PDX-1 and MafA in islets completely prevented the inhibition of insulin gene expression by palmitate.
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10 |
15944145
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These results demonstrate that prolonged exposure of islets to palmitate inhibits insulin gene transcription by impairing nuclear localization of PDX-1 and cellular expression of MafA.
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11 |
18199433
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Thus, Pax6 acts upstream of MafB, which in turn may trigger the expression of insulin and regulate the PDX-1 and MafA expression required for beta-cell maturation.
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12 |
21190012
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Important glucose-responsive transcription factors, Mafa and Pdx1, regulate genes involved in insulin synthesis and secretion, and have been implicated in late beta cell development.
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13 |
21190012
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After infection with adenovirus expressing MAFA, Pdx1 or green fluorescent protein (Gfp), P2 rat islets were evaluated by RT-PCR and insulin secretion with static incubation and reverse haemolytic plaque assay (RHPA).
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14 |
20158571
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MafA is a pancreatic transcriptional factor that controls ?-cell-specific transcription of the insulin gene.
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15 |
20158571
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Importantly, the expression of MafA in PDMSCs xenotransplanted into immunocompromised mice improved the restoration of blood insulin levels to control values and greatly prolonged the survival of graft cells in immunocompromised mice with STZ-induced diabetes.
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16 |
20158571
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In summary, these data suggest that MafA plays a novel role in the reprogramming of stem cells into pancreatic ?-progenitors, promotes the islet-like characteristics of PDMSCs, as well as functionally enhances insulin production to restore the regulation of blood glucose levels in transplanted grafts.
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17 |
15561947
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We do not however find any expression of the late-stage genes (Pax4, Pax6, Isl-1, and MafA) related to beta-cell development, and the cells do not secrete insulin upon the glucose challenge.
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18 |
15664997
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MafA, a recently isolated pancreatic beta-cell-specific transcription factor, is a potent activator of insulin gene transcription.
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19 |
17449132
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MafA is a recently isolated beta-cell-specific transcription factor which functions as a potent activator of insulin gene transcription.
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20 |
17449132
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Furthermore, MafA markedly enhances insulin gene promoter activity and ameliorates glucose tolerance in diabetic mice, especially in the presence of PDX-1 and NeuroD.
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21 |
17627512
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MafA is a recently isolated beta-cell-specific transcription factor which functions as a potent activator of insulin gene transcription.
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22 |
17709883
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The molecular mechanisms responsible for the glucose toxic effect on beta cell function involves disappearance of two important regulators of insulin promoter activity, PDX-1 and MafA.
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23 |
17785922
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This review summarizes recent progress in determining the functions and roles of MafA in the regulation of insulin gene transcription in beta-cells.
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24 |
17941991
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Expression of either human insulin or the beta cell specific transcription factors PDX-1, NeuroD1 and MafA in the Hepa1-6 cell line or primary liver cells via adenoviral gene transfer, results in production and secretion of insulin.
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25 |
18508668
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MafA is a recently isolated beta-cell-specific transcription factor and functions as a potent activator of insulin gene transcription.
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26 |
19393272
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Recently, C1 element-binding transcription factor was identified as MafA, which is a basic-leucine zipper transcription factor and functions as a potent transactivator for the insulin gene.
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27 |
19689288
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MafA, PDX-1 and NeuroD directly bind to the insulin gene promoter and function as very important transcription factors in pancreatic beta-cell differentiation and mature beta-cell function.
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28 |
20349222
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Surprisingly, XBP1s overexpression impaired glucose-stimulated insulin secretion and increased beta cell apoptosis, whereas it protected fibroblasts against cell death induced by ER-stress. mRNA expression of Pdx1 and Mafa was inhibited in cells overproducing XBP1s, leading to decreased insulin expression.
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29 |
21738894
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The adenovirus-mediated overexpression of PDX-1, BETA2/NeuroD and MafA induced insulin gene expression in NPCCs, but not in adult pig pancreatic cells.
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30 |
21395400
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Forced expression (between days 16 and 25) of MafA, a pancreatic maturation factor, resulted in enhanced expression of insulin genes, glucose transporter 2 and glucokinase, and glucose-responsive insulin secretion.
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