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PMID |
Sentence |
1 |
17804688
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CD14+ antigen-presenting cells in human dermis are less mature than their CD1a+ counterparts.
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2 |
17804688
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We recently demonstrated that three antigen-presenting cell (APC) subsets exist in the healthy human dermis, CD14(+) and CD1a(+) dermal APCs and migratory dermal Langerhans cells.
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3 |
17804688
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Here, we extend these findings by defining CD208 as an exclusive marker of migratory dermal Langerhans cells, confirming that migratory dermal Langerhans cells (CD1a(high) CD207(+) CD208(+)) and CD1a(+) dermal APCs (CD1a(mid) CD207(-) CD208(-)) are two distinct APC populations.
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4 |
17804688
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Using flow cytometry and multicolor fluorescence immunohistochemistry, we demonstrated that there were striking differences between CD1a(+) and CD14(+) dermal APCs in their expression of pattern recognition receptors and maturation markers.
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5 |
17804688
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Expression of Toll-like receptor (TLR) 2, CD206 and CD209 was largely restricted to CD14(+) dermal APCs.
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6 |
17804688
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Consistent with these observations, most CD14(+) dermal APCs expressed an immature phenotype when compared with CD1a(+) dermal APCs, which expressed high levels of the maturation marker CD83 on their cell surface.
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7 |
17804688
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However, a subset of CD14(+) dermal APCs also expressed cell-surface CD83, associated with a loss of cell-surface TLR2, suggesting that they have the capacity to mature.
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8 |
17804688
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CD14(+) dermal APCs are therefore the dominant cutaneous APC population capable of sensing ligands recognized by CD206, CD209 and TLR2 and subsequently may have the potential to mature.
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9 |
17804688
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CD68 expression was largely restricted to a subset of CD14(+) dermal APCs, while both CD14(+) and CD1a(+) dermal APCs expressed CD11b and CD11c.
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10 |
18354176
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We recently showed that the CD34(+) acute myeloid leukemia cell line MUTZ-3 supports differentiation of both DC-SIGN(+) IDC and Langerin-positive Birbeck granule-expressing LC.
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11 |
18354176
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This might be related to the observed inability of LC to release T cell stimulatory cytokines such as IL-12p70, IL-23, and IL-15.
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12 |
19218433
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Langerin(+) dDC, in contrast to LC, did not require TGFbeta1 for development.
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13 |
19576898
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DCs isolated from epidermis represented a uniform CD1a(+) HLA-DR(+) CD11c(+) Langerin(+) DC-SIGN(-) DC-LAMP(int) DEC-205(int) Langerhans cell (LC) population whereas three subtypes of HLA-DR(+) CD11c(+) DCs were isolated from dermis based on their varying expression of CD1a.
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14 |
19890348
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To evaluate access of dermal antigens to skin DCs, we used mAb to two C-type lectin endocytic receptors, DEC-205/CD205 and langerin/CD207.
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15 |
19890348
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Epidermal LCs targeted in vivo by ovalbumin-coupled anti-DEC-205 potently presented antigen to CD4+ and CD8+ T cells in vitro.
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16 |
20042470
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In the genital mucosa, two main subsets of DCs are present: epithelial LCs capture and degrade HIV-1 through C-type lectin Langerin, whereas subepithelial DCs express DC-SIGN, which facilitates HIV-1 transmission to T cells.
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17 |
20042470
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We show that carbohydrate structures blocking DC-SIGN but not Langerin are potential microbicides, as they prevent HIV-1 transmission by DCs but do not affect the antiviral function of LCs.
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18 |
20042470
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In the genital mucosa, two main subsets of DCs are present: epithelial LCs capture and degrade HIV-1 through C-type lectin Langerin, whereas subepithelial DCs express DC-SIGN, which facilitates HIV-1 transmission to T cells.
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19 |
20042470
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We show that carbohydrate structures blocking DC-SIGN but not Langerin are potential microbicides, as they prevent HIV-1 transmission by DCs but do not affect the antiviral function of LCs.
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20 |
20357252
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Using langerin-diphtheria toxin receptor transgenic mice we demonstrated that ablation of langerhans cells and langerin-expressing positive dermal DCs (Ln(+)dDCs) did not interfere with the generation of CD8(+) T cells by lentiviral vectors.
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21 |
21187444
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Langerin+ dermal dendritic cells are critical for CD8+ T cell activation and IgH γ-1 class switching in response to gene gun vaccines.
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22 |
21187444
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Langerin(+) DC were also critical for IgG1 but not IgG2a Ab induction, suggesting differential polarization of CD4(+) T helper cells by langerin(+) or langerin-negative DC, respectively.
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23 |
21187444
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Langerin+ dermal dendritic cells are critical for CD8+ T cell activation and IgH γ-1 class switching in response to gene gun vaccines.
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24 |
21187444
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Langerin(+) DC were also critical for IgG1 but not IgG2a Ab induction, suggesting differential polarization of CD4(+) T helper cells by langerin(+) or langerin-negative DC, respectively.
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25 |
21262813
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Comparable T helper 1 (Th1) and CD8 T-cell immunity by targeting HIV gag p24 to CD8 dendritic cells within antibodies to Langerin, DEC205, and Clec9A.
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26 |
21262813
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Here, we compared the capacity of Langerin/CD207, DEC205/CD205, and Clec9A receptors, each expressed on the CD8(+) DC subset in mice, to bring about immunization of microbial-specific T cells from the polyclonal repertoire, using HIV gag-p24 protein as an antigen. α-Langerin mAb targeted splenic CD8(+) DCs selectively in vivo, whereas α-DEC205 and α-Clec9A mAbs targeted additional cell types.
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27 |
21262813
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When the mAb heavy chains were engineered to express gag-p24, the α-Langerin, α-DEC205, and α-Clec9A fusion mAbs given along with a maturation stimulus induced comparable levels of gag-specific T helper 1 (Th1) and CD8(+) T cells in BALB/c × C57BL/6 F1 mice.
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28 |
21262813
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In an in vivo assay in which gag-primed T cells were used to report the early stages of T-cell responses, α-Langerin, α-DEC205, and α-Clec9A also mediated cross-presentation to primed CD8(+) T cells if, in parallel to antigen uptake, the DCs were stimulated with α-CD40. α-Langerin, α-DEC205, and α-Clec9A targeting greatly enhanced T-cell immunization relative to nonbinding control mAb or nontargeted HIV gag-p24 protein.
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29 |
21262813
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Comparable T helper 1 (Th1) and CD8 T-cell immunity by targeting HIV gag p24 to CD8 dendritic cells within antibodies to Langerin, DEC205, and Clec9A.
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30 |
21262813
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Here, we compared the capacity of Langerin/CD207, DEC205/CD205, and Clec9A receptors, each expressed on the CD8(+) DC subset in mice, to bring about immunization of microbial-specific T cells from the polyclonal repertoire, using HIV gag-p24 protein as an antigen. α-Langerin mAb targeted splenic CD8(+) DCs selectively in vivo, whereas α-DEC205 and α-Clec9A mAbs targeted additional cell types.
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31 |
21262813
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When the mAb heavy chains were engineered to express gag-p24, the α-Langerin, α-DEC205, and α-Clec9A fusion mAbs given along with a maturation stimulus induced comparable levels of gag-specific T helper 1 (Th1) and CD8(+) T cells in BALB/c × C57BL/6 F1 mice.
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32 |
21262813
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In an in vivo assay in which gag-primed T cells were used to report the early stages of T-cell responses, α-Langerin, α-DEC205, and α-Clec9A also mediated cross-presentation to primed CD8(+) T cells if, in parallel to antigen uptake, the DCs were stimulated with α-CD40. α-Langerin, α-DEC205, and α-Clec9A targeting greatly enhanced T-cell immunization relative to nonbinding control mAb or nontargeted HIV gag-p24 protein.
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33 |
21439318
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Positive and double staining for CD11c and BDCA-2, pDC/IPC, DC-LAMP, DC-SIGN, TLR8 and Langerin have been observed revealing new mouse intestinal DC subsets.
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34 |
21536741
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After physiologically relevant low-dose infection with L. major (1,000 parasites), mice depleted of all Langerin(+) DCs developed significantly smaller ear lesions with decreased parasite loads and a reduced number of CD4(+) Foxp3(+) regulatory T cells (T reg cells) as compared with controls.
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35 |
21628848
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Evidence from a variety of investigations, including epidemiologic studies on sexual transmission, in vivo studies in rhesus monkey, and ex vivo studies using human explant models, indicate that CD4/CCR5-mediated de novo infection of Langerhans cells (LCs) is a major pathway involved in sexual transmission of HIV (LCs primary gate keeper model).
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36 |
21628848
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However, it has been recently revealed that Langerin (a C-type lectin receptor) expressed on LC inactivate HIV.
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37 |
22361816
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Hereto, 3-5 kb upstream sequences of the murine genes encoding CD11c, DC-SIGN, DC-STAMP and Langerin were isolated, characterized and subcloned into enhanced green fluorescent protein (EGFP) reporter constructs.
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38 |
22361816
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When these promoters were cloned into a construct upstream of the gene for ovalbumin (OVA), it appeared that DC-STAMP promoter-driven expression of OVA (pDCSTAMP/OVA) in DC yielded the most efficient OVA-specific CD4+ and CD8+ T-cell responses in vitro.
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39 |
22585548
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As in human skin, Langerhans cells (LCs) resided exclusively in the macaque epidermis, expressing CD11c, high levels of CD1a and langerin (CD207).
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40 |
22585548
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After injection into macaques, CD34-DCs expressing HIV-Gag induced Gag-specific CD4(+) and CD8(+) T cells producing IFN-γ, TNF-α, MIP-1β, or IL-2.
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41 |
23386724
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Langerin negative dendritic cells promote potent CD8+ T-cell priming by skin delivery of live adenovirus vaccine microneedle arrays.
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42 |
23386724
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The MA immunizing properties were attributable to CD11c(+) MHCII(hi) CD8α(neg) epithelial cell adhesion molecule (EpCAM(neg)) CD11b(+) langerin (Lang; CD207)(neg) DCs, but neither Langerhans cells nor Lang(+) DCs were required for CD8(+) T-cell priming.
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43 |
23386724
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Langerin negative dendritic cells promote potent CD8+ T-cell priming by skin delivery of live adenovirus vaccine microneedle arrays.
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44 |
23386724
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The MA immunizing properties were attributable to CD11c(+) MHCII(hi) CD8α(neg) epithelial cell adhesion molecule (EpCAM(neg)) CD11b(+) langerin (Lang; CD207)(neg) DCs, but neither Langerhans cells nor Lang(+) DCs were required for CD8(+) T-cell priming.
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45 |
24126845
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Langerin+ dermal DC, but not Langerhans cells, are required for effective CD8-mediated immune responses after skin scarification with vaccinia virus.
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46 |
24126845
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Using Langerin-diphtheria toxin receptor mice and established mouse model of VACV delivered by s.s., we demonstrated that Lang+ dDC, but not LC, are absolutely required for the induction of a rapid and robust antigen-specific CD8+ T-cell response after s.s. with VACV.
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47 |
24126845
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Langerin+ dermal DC, but not Langerhans cells, are required for effective CD8-mediated immune responses after skin scarification with vaccinia virus.
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48 |
24126845
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Using Langerin-diphtheria toxin receptor mice and established mouse model of VACV delivered by s.s., we demonstrated that Lang+ dDC, but not LC, are absolutely required for the induction of a rapid and robust antigen-specific CD8+ T-cell response after s.s. with VACV.
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49 |
24486365
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DLNs were enriched in a peculiar MHCII(+) CD11c((-)) CD207(+) population, whose role remains to be determined.
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50 |
24618819
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Both Langerin(+) and Langerin(-) CD11b(+) migratory DC can cross-present antigen in our system, but only the Langerin+ subset can induce expression of the skin-selective addressin E-selectin ligand.
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51 |
24618819
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Thus, the CD11b(+) Langerin(+) migratory DC population, comprised primarily of Langerhans cells, both cross-primes naïve CD8 T cells and imprints them with skin-homing capabilities.
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52 |
24618819
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Both Langerin(+) and Langerin(-) CD11b(+) migratory DC can cross-present antigen in our system, but only the Langerin+ subset can induce expression of the skin-selective addressin E-selectin ligand.
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53 |
24618819
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Thus, the CD11b(+) Langerin(+) migratory DC population, comprised primarily of Langerhans cells, both cross-primes naïve CD8 T cells and imprints them with skin-homing capabilities.
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54 |
24810638
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Our culture protocol generated a clinically relevant number of mature CD1a myeloid DC and CD207 Langerhans cells (LC)-like DC subsets from CD34 HPC with >95% purity.
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55 |
24810638
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Additional studies revealed that UCC-DC and UCB-LC can efficiently expand minor histocompatibility antigen (MiHA) HA-1-specific cytotoxic T cells in the peripheral blood of leukemia patients and prime MiHA HA-1-specific and HA-2-specific cytotoxic T cells in vitro.
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56 |
25085878
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Murine Langerin+ dermal dendritic cells prime CD8+ T cells while Langerhans cells induce cross-tolerance.
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57 |
25085878
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Antigens targeted to DCs via the C-type lectin Langerin/CD207 are cross-presented to CD8(+) T cells in vivo.
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58 |
25085878
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This correlated with CD70 upregulation in Langerin(+) dDCs, but not LCs.
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59 |
25085878
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In chimeric mice where Langerin targeting was restricted to dDCs, CD8(+) T-cell memory was enhanced.
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60 |
25085878
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Conversely, providing Langerin/OVA exclusively to LCs failed to prime cytotoxicity, despite initial antigen cross-presentation to CD8(+) T cells.
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61 |
25085878
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Langerin/OVA combined with imiquimod could not prime CD8(+) T cells and resulted in poor cytotoxicity in subsequent responses.
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62 |
25085878
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Altogether, Langerin(+) dDCs prime long-lasting cytotoxic responses, while cross-presentation by LCs negatively influences CD8(+) T-cell priming.
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63 |
25085878
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Murine Langerin+ dermal dendritic cells prime CD8+ T cells while Langerhans cells induce cross-tolerance.
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64 |
25085878
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Antigens targeted to DCs via the C-type lectin Langerin/CD207 are cross-presented to CD8(+) T cells in vivo.
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65 |
25085878
|
This correlated with CD70 upregulation in Langerin(+) dDCs, but not LCs.
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66 |
25085878
|
In chimeric mice where Langerin targeting was restricted to dDCs, CD8(+) T-cell memory was enhanced.
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67 |
25085878
|
Conversely, providing Langerin/OVA exclusively to LCs failed to prime cytotoxicity, despite initial antigen cross-presentation to CD8(+) T cells.
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68 |
25085878
|
Langerin/OVA combined with imiquimod could not prime CD8(+) T cells and resulted in poor cytotoxicity in subsequent responses.
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69 |
25085878
|
Altogether, Langerin(+) dDCs prime long-lasting cytotoxic responses, while cross-presentation by LCs negatively influences CD8(+) T-cell priming.
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70 |
25085878
|
Murine Langerin+ dermal dendritic cells prime CD8+ T cells while Langerhans cells induce cross-tolerance.
|
71 |
25085878
|
Antigens targeted to DCs via the C-type lectin Langerin/CD207 are cross-presented to CD8(+) T cells in vivo.
|
72 |
25085878
|
This correlated with CD70 upregulation in Langerin(+) dDCs, but not LCs.
|
73 |
25085878
|
In chimeric mice where Langerin targeting was restricted to dDCs, CD8(+) T-cell memory was enhanced.
|
74 |
25085878
|
Conversely, providing Langerin/OVA exclusively to LCs failed to prime cytotoxicity, despite initial antigen cross-presentation to CD8(+) T cells.
|
75 |
25085878
|
Langerin/OVA combined with imiquimod could not prime CD8(+) T cells and resulted in poor cytotoxicity in subsequent responses.
|
76 |
25085878
|
Altogether, Langerin(+) dDCs prime long-lasting cytotoxic responses, while cross-presentation by LCs negatively influences CD8(+) T-cell priming.
|
77 |
25085878
|
Murine Langerin+ dermal dendritic cells prime CD8+ T cells while Langerhans cells induce cross-tolerance.
|
78 |
25085878
|
Antigens targeted to DCs via the C-type lectin Langerin/CD207 are cross-presented to CD8(+) T cells in vivo.
|
79 |
25085878
|
This correlated with CD70 upregulation in Langerin(+) dDCs, but not LCs.
|
80 |
25085878
|
In chimeric mice where Langerin targeting was restricted to dDCs, CD8(+) T-cell memory was enhanced.
|
81 |
25085878
|
Conversely, providing Langerin/OVA exclusively to LCs failed to prime cytotoxicity, despite initial antigen cross-presentation to CD8(+) T cells.
|
82 |
25085878
|
Langerin/OVA combined with imiquimod could not prime CD8(+) T cells and resulted in poor cytotoxicity in subsequent responses.
|
83 |
25085878
|
Altogether, Langerin(+) dDCs prime long-lasting cytotoxic responses, while cross-presentation by LCs negatively influences CD8(+) T-cell priming.
|
84 |
25085878
|
Murine Langerin+ dermal dendritic cells prime CD8+ T cells while Langerhans cells induce cross-tolerance.
|
85 |
25085878
|
Antigens targeted to DCs via the C-type lectin Langerin/CD207 are cross-presented to CD8(+) T cells in vivo.
|
86 |
25085878
|
This correlated with CD70 upregulation in Langerin(+) dDCs, but not LCs.
|
87 |
25085878
|
In chimeric mice where Langerin targeting was restricted to dDCs, CD8(+) T-cell memory was enhanced.
|
88 |
25085878
|
Conversely, providing Langerin/OVA exclusively to LCs failed to prime cytotoxicity, despite initial antigen cross-presentation to CD8(+) T cells.
|
89 |
25085878
|
Langerin/OVA combined with imiquimod could not prime CD8(+) T cells and resulted in poor cytotoxicity in subsequent responses.
|
90 |
25085878
|
Altogether, Langerin(+) dDCs prime long-lasting cytotoxic responses, while cross-presentation by LCs negatively influences CD8(+) T-cell priming.
|
91 |
25085878
|
Murine Langerin+ dermal dendritic cells prime CD8+ T cells while Langerhans cells induce cross-tolerance.
|
92 |
25085878
|
Antigens targeted to DCs via the C-type lectin Langerin/CD207 are cross-presented to CD8(+) T cells in vivo.
|
93 |
25085878
|
This correlated with CD70 upregulation in Langerin(+) dDCs, but not LCs.
|
94 |
25085878
|
In chimeric mice where Langerin targeting was restricted to dDCs, CD8(+) T-cell memory was enhanced.
|
95 |
25085878
|
Conversely, providing Langerin/OVA exclusively to LCs failed to prime cytotoxicity, despite initial antigen cross-presentation to CD8(+) T cells.
|
96 |
25085878
|
Langerin/OVA combined with imiquimod could not prime CD8(+) T cells and resulted in poor cytotoxicity in subsequent responses.
|
97 |
25085878
|
Altogether, Langerin(+) dDCs prime long-lasting cytotoxic responses, while cross-presentation by LCs negatively influences CD8(+) T-cell priming.
|
98 |
25085878
|
Murine Langerin+ dermal dendritic cells prime CD8+ T cells while Langerhans cells induce cross-tolerance.
|
99 |
25085878
|
Antigens targeted to DCs via the C-type lectin Langerin/CD207 are cross-presented to CD8(+) T cells in vivo.
|
100 |
25085878
|
This correlated with CD70 upregulation in Langerin(+) dDCs, but not LCs.
|
101 |
25085878
|
In chimeric mice where Langerin targeting was restricted to dDCs, CD8(+) T-cell memory was enhanced.
|
102 |
25085878
|
Conversely, providing Langerin/OVA exclusively to LCs failed to prime cytotoxicity, despite initial antigen cross-presentation to CD8(+) T cells.
|
103 |
25085878
|
Langerin/OVA combined with imiquimod could not prime CD8(+) T cells and resulted in poor cytotoxicity in subsequent responses.
|
104 |
25085878
|
Altogether, Langerin(+) dDCs prime long-lasting cytotoxic responses, while cross-presentation by LCs negatively influences CD8(+) T-cell priming.
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105 |
25407434
|
DC studies have led to remarkable discoveries, including identification of restriction factors, cellular structures promoting viral transmission including the infectious synapse or the interplay of the C-type lectins, Langerin on Langerhans cells (LCs), and dendritic cell-specific intercellular adhesion molecule-3-grabbing non-integrin on other DC subsets, limiting or facilitating HIV transmission to CD4(+) T cells, respectively.
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