Regulation of PD-L1 through direct binding of cholesterol to CRAC motifs.
Regulation of PD-L1 through direct binding of cholesterol to CRAC motifs.
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通过胆固醇与 CRAC 基序的直接结合来调节 PD-L1
DOI:
10.1126/sciadv.abq4722
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发表时间:
2022-08-26
期刊:
影响因子:
13.6
通讯作者:
中科院分区:
文献类型:
--
作者:
Cholesterol, an essential molecule for cell structure, function, and viability, plays crucial roles in the development, progression, and survival of cancer cells. Earlier studies have shown that cholesterol-lowering drugs can inhibit the high expression of programmed-death ligand 1 (PD-L1) that contributes to immunoevasion in cancer cells. However, the regulatory mechanism of cell surface PD-L1 abundance by cholesterol is still controversial. Here, using nuclear magnetic resonance and biochemical techniques, we demonstrated that cholesterol can directly bind to the transmembrane domain of PD-L1 through two cholesterol-recognition amino acid consensus (CRAC) motifs, forming a sandwich-like architecture and stabilizing PD-L1 to prevent downstream degradation. Mutations at key binding residues prohibit PD-L1–cholesterol interactions, decreasing the cellular abundance of PD-L1. Our results reveal a unique regulatory mechanism that controls the stability of PD-L1 in cancer cells, providing an alternative method to overcome PD-L1–mediated immunoevasion in cancers.
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影响因子:
16.6
作者:
Jaipuria G;Leonov A;Giller K;Vasa SK;Jaremko Ł;Jaremko M;Linser R;Becker S;Zweckstetter M
通讯作者:
Zweckstetter M
影响因子:
4.6
作者:
Baier, Carlos J.;Fantini, Jacques;Barrantes, Francisco J.
通讯作者:
Barrantes, Francisco J.
DOI:
10.1007/978-3-030-14265-0_1
发表时间:
2019-01-01
期刊:
DIRECT MECHANISMS IN CHOLESTEROL MODULATION OF PROTEIN FUNCTION
影响因子:
--
作者:
Fantini, Jacques;Epand, Richard M.;Barrantes, Francisco J.
通讯作者:
Barrantes, Francisco J.
影响因子:
16.6
作者:
Liu W;Chakraborty B;Safi R;Kazmin D;Chang CY;McDonnell DP
通讯作者:
McDonnell DP
影响因子:
4.8
作者:
Li, H;Papadopoulos, V
通讯作者:
Papadopoulos, V