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6k7o

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Revision as of 17:23, 14 August 2019

Complex structure of LILRB4 and h128-3 antibody

Structural highlights

6k7o is a 12 chain structure with sequence from Human. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
Gene:	LILRB4, ILT3, LIR5 (HUMAN)
Resources:	FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT

Function

[LIRB4_HUMAN] Receptor for class I MHC antigens. Recognizes a broad spectrum of HLA-A, HLA-B, HLA-C and HLA-G alleles. Involved in the down-regulation of the immune response and the development of tolerance, e.g. towards transplants. Interferes with TNFRSF5-signaling and NF-kappa-B up-regulation. Inhibits receptor-mediated phosphorylation of cellular proteins and mobilization of intracellular calcium ions.^[1] ^[2]

Publication Abstract from PubMed

Therapeutic strategies are urgently needed for patients with acute myeloid leukemia (AML). Leukocyte immunoglobulin-like receptor B4 (LILRB4), which suppresses T-cell activation and supports tissue infiltration of AML cells, represents an attractive drug target for anti-AML therapeutics. Here, we report the identification and development of an LILRB4-specific humanized mAb that blocks LILRB4 activation. This mAb, h128-3, showed potent activity in blocking the development of monocytic AML in various models including patient-derived xenograft mice and syngeneic immunocompetent AML mice. MAb h128-3 enhanced the anti-AML efficacy of chemotherapy treatment by stimulating mobilization of leukemia cells. Mechanistic studies revealed four concordant modes of action for the anti-AML activity of h128-3: (i) reversal of T-cell suppression, (ii) inhibition of monocytic AML cell tissue infiltration, (iii) antibody-dependent cellular cytotoxicity, and (iv) antibody-dependent cellular phagocytosis. Therefore, targeting LILRB4 with antibody represents an effective therapeutic strategy for treating monocytic AML.

Disrupting LILRB4/APOE Interaction by an Efficacious Humanized Antibody Reverses T-cell Suppression and Blocks AML Development.,Gui X, Deng M, Song H, Chen Y, Xie J, Li Z, He L, Huang F, Xu Y, Anami Y, Yu H, Yu C, Li L, Yuan Z, Xu X, Wang Q, Chai Y, Huang T, Shi Y, Tsuchikama K, Liao XC, Xia N, Gao GF, Zhang N, Zhang CC, An Z Cancer Immunol Res. 2019 Jun 18. pii: 2326-6066.CIR-19-0036. doi:, 10.1158/2326-6066.CIR-19-0036. PMID:31213474^[3]

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.

References

↑ Chang CC, Ciubotariu R, Manavalan JS, Yuan J, Colovai AI, Piazza F, Lederman S, Colonna M, Cortesini R, Dalla-Favera R, Suciu-Foca N. Tolerization of dendritic cells by T(S) cells: the crucial role of inhibitory receptors ILT3 and ILT4. Nat Immunol. 2002 Mar;3(3):237-43. Epub 2002 Jan 28. PMID:11875462 doi:10.1038/ni760
↑ Cella M, Dohring C, Samaridis J, Dessing M, Brockhaus M, Lanzavecchia A, Colonna M. A novel inhibitory receptor (ILT3) expressed on monocytes, macrophages, and dendritic cells involved in antigen processing. J Exp Med. 1997 May 19;185(10):1743-51. PMID:9151699
↑ Gui X, Deng M, Song H, Chen Y, Xie J, Li Z, He L, Huang F, Xu Y, Anami Y, Yu H, Yu C, Li L, Yuan Z, Xu X, Wang Q, Chai Y, Huang T, Shi Y, Tsuchikama K, Liao XC, Xia N, Gao GF, Zhang N, Zhang CC, An Z. Disrupting LILRB4/APOE Interaction by an Efficacious Humanized Antibody Reverses T-cell Suppression and Blocks AML Development. Cancer Immunol Res. 2019 Jun 18. pii: 2326-6066.CIR-19-0036. doi:, 10.1158/2326-6066.CIR-19-0036. PMID:31213474 doi:http://dx.doi.org/10.1158/2326-6066.CIR-19-0036

1 Structural highlights
2 Function
3 Publication Abstract from PubMed
4 References

Proteopedia Page Contributors and Editors (what is this?)

OCA

Retrieved from "http://52.214.119.220/wiki/index.php/6k7o"

@@ Line 3: / Line 3: @@
 <StructureSection load='6k7o' size='340' side='right'caption='[[6k7o]], [[Resolution|resolution]] 3.00&Aring;' scene=''>
 == Structural highlights ==
-<table><tr><td colspan='2'>[[6k7o]] is a 12 chain structure. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=6K7O OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=6K7O FirstGlance]. <br>
+<table><tr><td colspan='2'>[[6k7o]] is a 12 chain structure with sequence from [http://en.wikipedia.org/wiki/Human Human]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=6K7O OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=6K7O FirstGlance]. <br>
-</td></tr><tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=6k7o FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=6k7o OCA], [http://pdbe.org/6k7o PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=6k7o RCSB], [http://www.ebi.ac.uk/pdbsum/6k7o PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=6k7o ProSAT]</span></td></tr>
+</td></tr><tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">LILRB4, ILT3, LIR5 ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=9606 HUMAN])</td></tr>
+<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=6k7o FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=6k7o OCA], [http://pdbe.org/6k7o PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=6k7o RCSB], [http://www.ebi.ac.uk/pdbsum/6k7o PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=6k7o ProSAT]</span></td></tr>
 </table>
 == Function ==
@@ Line 21: / Line 22: @@
 __TOC__
 </StructureSection>
+[[Category: Human]]
 [[Category: Large Structures]]
 [[Category: Chai, Y]]

6k7o

From Proteopedia

Revision as of 17:23, 14 August 2019

Complex structure of LILRB4 and h128-3 antibody

Structural highlights

Function

Publication Abstract from PubMed

References

Contents

Proteopedia Page Contributors and Editors (what is this?)

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