Human Leukocyte Antigen F Presents Peptides and Regulates Immunity through Interactions with NK Cell Receptors
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Human Leukocyte Antigen F Presents Peptides and Regulates Immunity through Interactions with NK Cell Receptors. / Dulberger, Charles L; McMurtrey, Curtis P; Hölzemer, Angelique; Neu, Karlynn E; Liu, Victor; Steinbach, Adriana M; Garcia-Beltran, Wilfredo F; Sulak, Michael; Jabri, Bana; Lynch, Vincent J; Altfeld, Marcus; Hildebrand, William H; Adams, Erin J.
In: IMMUNITY, Vol. 46, No. 6, 20.06.2017, p. 1018-1029.e7.Research output: SCORING: Contribution to journal › SCORING: Journal article › Research › peer-review
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TY - JOUR
T1 - Human Leukocyte Antigen F Presents Peptides and Regulates Immunity through Interactions with NK Cell Receptors
AU - Dulberger, Charles L
AU - McMurtrey, Curtis P
AU - Hölzemer, Angelique
AU - Neu, Karlynn E
AU - Liu, Victor
AU - Steinbach, Adriana M
AU - Garcia-Beltran, Wilfredo F
AU - Sulak, Michael
AU - Jabri, Bana
AU - Lynch, Vincent J
AU - Altfeld, Marcus
AU - Hildebrand, William H
AU - Adams, Erin J
N1 - Copyright © 2017 Elsevier Inc. All rights reserved.
PY - 2017/6/20
Y1 - 2017/6/20
N2 - Evidence is mounting that the major histocompatibility complex (MHC) molecule HLA-F (human leukocyte antigen F) regulates the immune system in pregnancy, infection, and autoimmunity by signaling through NK cell receptors (NKRs). We present structural, biochemical, and evolutionary analyses demonstrating that HLA-F presents peptides of unconventional length dictated by a newly arisen mutation (R62W) that has produced an open-ended groove accommodating particularly long peptides. Compared to empty HLA-F open conformers (OCs), HLA-F tetramers bound with human-derived peptides differentially stained leukocytes, suggesting peptide-dependent engagement. Our in vitro studies confirm that NKRs differentiate between peptide-bound and peptide-free HLA-F. The complex structure of peptide-loaded β2m-HLA-F bound to the inhibitory LIR1 revealed similarities to high-affinity recognition of the viral MHC-I mimic UL18 and a docking strategy that relies on contacts with HLA-F as well as β2m, thus precluding binding to HLA-F OCs. These findings provide a biochemical framework to understand how HLA-F could regulate immunity via interactions with NKRs.
AB - Evidence is mounting that the major histocompatibility complex (MHC) molecule HLA-F (human leukocyte antigen F) regulates the immune system in pregnancy, infection, and autoimmunity by signaling through NK cell receptors (NKRs). We present structural, biochemical, and evolutionary analyses demonstrating that HLA-F presents peptides of unconventional length dictated by a newly arisen mutation (R62W) that has produced an open-ended groove accommodating particularly long peptides. Compared to empty HLA-F open conformers (OCs), HLA-F tetramers bound with human-derived peptides differentially stained leukocytes, suggesting peptide-dependent engagement. Our in vitro studies confirm that NKRs differentiate between peptide-bound and peptide-free HLA-F. The complex structure of peptide-loaded β2m-HLA-F bound to the inhibitory LIR1 revealed similarities to high-affinity recognition of the viral MHC-I mimic UL18 and a docking strategy that relies on contacts with HLA-F as well as β2m, thus precluding binding to HLA-F OCs. These findings provide a biochemical framework to understand how HLA-F could regulate immunity via interactions with NKRs.
KW - Antigen Presentation
KW - Antigens
KW - Antigens, CD
KW - Biological Evolution
KW - Crystallography, X-Ray
KW - Female
KW - HEK293 Cells
KW - Histocompatibility Antigens Class I
KW - Humans
KW - Killer Cells, Natural
KW - Leukocyte Immunoglobulin-like Receptor B1
KW - Molecular Mimicry
KW - Mutation
KW - Peptide Fragments
KW - Pregnancy
KW - Protein Binding
KW - Protein Conformation
KW - Receptors, Immunologic
KW - Receptors, Natural Killer Cell
KW - Viral Proteins
KW - Journal Article
KW - Research Support, N.I.H., Extramural
KW - Research Support, Non-U.S. Gov't
U2 - 10.1016/j.immuni.2017.06.002
DO - 10.1016/j.immuni.2017.06.002
M3 - SCORING: Journal article
C2 - 28636952
VL - 46
SP - 1018-1029.e7
JO - IMMUNITY
JF - IMMUNITY
SN - 1074-7613
IS - 6
ER -