Evidence map›Paper›PMID 34429434›Full record

ArticleNature communications2021

PD-L1 degradation is regulated by electrostatic membrane association of its cytoplasmic domain.

Maorong Wen, Yunlei Cao, Bin Wu, Taoran Xiao, Ruiyu Cao, Qian Wang, Xiwei Liu, Hongjuan Xue, Yang Yu, Jialing Lin and 3 more

Open access · goldFull text read
In one paragraph

Article in Nature communications, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 42 papers.

0numbers the graph read from it
0cells of the map it votes in
42citing papers in PubMed
4.6field-weighted citation impact, top 3% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

42 citing papers in PubMed, 75 citations in OpenAlex.

  1. Review
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  8. Article
  9. Intracellular PD-L1: Functions, Regulation, and Therapeutic Implications.International journal of biological sciences · 2026
    Review
  10. Biochemical analysis of PD-L1 ubiquitination by CRL3Structure (London, England : 1993) · 2025
    Article
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  14. Review
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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

13 authors at 4 institutions in 2 countries.

Maorong Wen *State Key Laboratory of Molecular Biology, Shanghai Institute of Biochemistry and Cell Biology, Center for Excellence in Molecular Cell Science, Chinese Academy of Sciences, Shanghai, China. mrwen@sibcb.ac.cn.ORCID http://orcid.org/0000-0002-8632-8247
Yunlei Cao *State Key Laboratory of Molecular Biology, Shanghai Institute of Biochemistry and Cell Biology, Center for Excellence in Molecular Cell Science, Chinese Academy of Sciences, Shanghai, China.
Bin Wu *National Facility for Protein Science in Shanghai, ZhangJiang lab, Shanghai Advanced Research Institute, Chinese Academy of Sciences, Shanghai, China.
Taoran XiaoState Key Laboratory of Molecular Biology, Shanghai Institute of Biochemistry and Cell Biology, Center for Excellence in Molecular Cell Science, Chinese Academy of Sciences, Shanghai, China.
Ruiyu CaoState Key Laboratory of Molecular Biology, Shanghai Institute of Biochemistry and Cell Biology, Center for Excellence in Molecular Cell Science, Chinese Academy of Sciences, Shanghai, China.
Qian WangState Key Laboratory of Molecular Biology, Shanghai Institute of Biochemistry and Cell Biology, Center for Excellence in Molecular Cell Science, Chinese Academy of Sciences, Shanghai, China.
Xiwei LiuState Key Laboratory of Molecular Biology, Shanghai Institute of Biochemistry and Cell Biology, Center for Excellence in Molecular Cell Science, Chinese Academy of Sciences, Shanghai, China.
Hongjuan XueNational Facility for Protein Science in Shanghai, ZhangJiang lab, Shanghai Advanced Research Institute, Chinese Academy of Sciences, Shanghai, China.
Yang YuNational Facility for Protein Science in Shanghai, ZhangJiang lab, Shanghai Advanced Research Institute, Chinese Academy of Sciences, Shanghai, China.
Jialing LinDepartment of Biochemistry and Molecular Biology, University of Oklahoma Health Sciences Center, Oklahoma City, OK, USA.ORCID http://orcid.org/0000-0002-2126-1571
Chenqi XuState Key Laboratory of Molecular Biology, Shanghai Institute of Biochemistry and Cell Biology, Center for Excellence in Molecular Cell Science, Chinese Academy of Sciences, Shanghai, China.ORCID http://orcid.org/0000-0002-4968-6782
Jie XuInstitutes of Biomedical Sciences, Fudan University, Shanghai, China.
Bo OuYangState Key Laboratory of Molecular Biology, Shanghai Institute of Biochemistry and Cell Biology, Center for Excellence in Molecular Cell Science, Chinese Academy of Sciences, Shanghai, China. ouyang@sibcb.ac.cn.ORCID http://orcid.org/0000-0002-2877-0635
Chinese Academy of Sciences · CNCenter for Excellence in Molecular Cell Science · CNFudan University · CNOklahoma State University Oklahoma City · US

Funding

Structure-Function Studies of MsvR, a Methanogen-Specific Transcriptional RegulaP20GM103640 · NIGMS · UNIVERSITY OF OKLAHOMA · PI THOMAS, LEONARD M · 2012 to 2021
$20.4M
NIGMS NIH HHS P20 GM103640
6 · The paper itself

Abstract

The cytoplasmic domain of PD-L1 (PD-L1-CD) regulates PD-L1 degradation and stability through various mechanism, making it an attractive target for blocking PD-L1-related cancer signaling. Here, by using NMR and biochemical techniques we find that the membrane association of PD-L1-CD is mediated by electrostatic interactions between acidic phospholipids and basic residues in the N-terminal region. The absence of the acidic phospholipids and replacement of the basic residues with acidic residues abolish the membrane association. Moreover, the basic-to-acidic mutations also decrease the cellular abundance of PD-L1, implicating that the electrostatic interaction with the plasma membrane mediates the cellular levels of PD-L1. Interestingly, distinct from its reported function as an activator of AMPK in tumor cells, the type 2 diabetes drug metformin enhances the membrane dissociation of PD-L1-CD by disrupting the electrostatic interaction, thereby decreasing the cellular abundance of PD-L1. Collectively, our study reveals an unusual regulatory mechanism that controls the PD-L1 level in tumor cells, suggesting an alternative strategy to improve the efficacy of PD-L1-related immunotherapies.

Indexed as

Static ElectricityB7-H1 AntigenCell MembraneDiabetes Mellitus, Type 2HEK293 CellsHumansImmunotherapyMembranesMetforminMutationB7-H1 AntigenCD274 protein, humanMetformin

Identifiers

PMID34429434
PMCPMC8384847
OpenAlexW3195628626

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Registered trials

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.