Cited by 352T-cell and B-cell ImmunologyCancer Immunotherapy and BiomarkersImmune cells in cancer

PD-1hi identifies a novel regulatory b-cell population in human hepatoma that promotes disease progression

Xiao, Xiao, Lao, Xiang-Ming, Chen, Min-Min, Liu, Rui-Xian, Wei, Yuan, Ouyang, Fang-Zhu, Chen, Dong-Ping, Zhao, Xiao-Yu +5 more·2016·Cancer Discovery

Published version of a preprint

Abstract

UNLABELLED: B cells often constitute abundant cellular components in human tumors. Regulatory B cells that are functionally defined by their ability to produce IL10 downregulate inflammation and control T-cell immunity. Here, we identified a protumorigenic subset of B cells that constitutively expressed higher levels of programmed cell death-1 (PD-1) and constituted ∼10% of all B cells in advanced-stage hepatocellular carcinoma (HCC). These PD-1(hi) B cells exhibited a unique CD5(hi)CD24(-/+)CD27(hi/+)CD38(dim) phenotype different from the phenotype of conventional CD24(hi)CD38(hi) peripheral regulatory B cells. TLR4-mediated BCL6 upregulation was crucial for PD-1(hi) B-cell induction by HCC environmental factors, and that effect was abolished by IL4-elicited STAT6 phosphorylation. Importantly, upon encountering PD-L1(+) cells or undergoing PD-1 triggering, PD-1(hi) B cells acquired regulatory functions that suppressed tumor-specific T-cell immunity and promoted cancer growth via IL10 signals. Our findings provide significant new insights for human cancer immunosuppression and anticancer therapies regarding PD-1/PD-L1. SIGNIFICANCE: We identify a novel protumorigenic PD-1(hi) B-cell subset in human HCC that exhibits a phenotype distinct from that of peripheral regulatory B cells. TLR4-mediated BCL6 upregulation is critical for induction of PD-1(hi) B cells, which operate via IL10-dependent pathways upon interacting with PD-L1 to cause T-cell dysfunction and foster disease progression. Cancer Discov; 6(5); 546-59. ©2016 AACR.See related commentary by Ren et al., p. 477This article is highlighted in the In This Issue feature, p. 461.

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Crossref · 10.1158/2159-8290.cd-15-1408

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  • Inhibition of the PD-1/PD-L1 pathway may also have T cell-independent effects.

    “Since other cell types (such as dendritic cells and B cells) can also be influenced by PD-1 signaling, inhibition of the PD-1/PD-L1 pathway may also have T cell-independent effects, whose impact on immune responses during checkpoint inhibitor therapy remain to be elucidated (36, 58).”

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Authors
Xiao, X., Lao, X.-M., Chen, M.-M., Liu, R.-X., Wei, Y., Ouyang, F.-Z., Chen, D.-P., Zhao, X.-Y., Zhao, Q., Li, X.-F., Liu, C.-L., Zheng, L., & Kuang, D.-M.
Affiliations
  • 1Key Laboratory of Gene Engineering of the Ministry of Education, State Key Laboratory of Biocontrol, School of Life Sciences, Sun Yat-sen University, Guangzhou, China.
  • Sun Yat-sen University Cancer Center (CN)
  • Sun Yat-sen University (CN)
Venue
Cancer Discovery
Published
2016-05-01
Volume
6
Issue
5
Pages
546-559
ISSN
  • 2159-8274 (ISSN-L)
  • 2159-8290
OpenAlex
W2295125580
Cited by
352
References
46
Citations by year
2026: 23 · 2025: 42 · 2024: 37 · 2023: 35 · 2022: 46 · 2021: 57 · 2020: 35 · 2019: 34 · 2018: 20 · 2017: 13 · 2016: 10
FWCI
15.44
Type
journal article
Language
en
Open access
closed
Locations
  • Cancer Discovery (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • National Natural Science Foundation of China (81422036, 31470855, 81171982)
  • Guangdong Natural Science Funds for Distinguished Young Scholars (S2013050014639)
  • Doctoral Dissertation of PR China (201230)
  • Fundamental Research Funds for the Central Universities (15lgjc09)
Topics
  • Life Sciences › Immunology and Microbiology › Immunology › T-cell and B-cell Immunology
  • Health Sciences › Medicine › Oncology › Cancer Immunotherapy and Biomarkers
  • Life Sciences › Immunology and Microbiology › Immunology › Immune cells in cancer
Keywords
regulatory B cells, hepatocellular carcinoma, PD-L1, TLR4, BCL6, IL-10, STAT6, tumor immunosuppression, T cell suppression, B-cell phenotype, cancer immunotherapy
MeSH terms
Animals, Disease Models, Animal, Flow Cytometry, Hepatitis B, Hepatitis C, Carcinoma, Hepatocellular, Humans, Liver Neoplasms, Neoplasm Staging, Phenotype, Protein Binding, Recurrence, Signal Transduction, Biomarkers, Gene Expression, Immunophenotyping, Cytokines, Lymphocytes, Tumor-Infiltrating, Disease Progression, Cell Line, Tumor, STAT6 Transcription Factor, Mice, Proto-Oncogene Proteins c-bcl-6, Immunomodulation, B-Lymphocytes, Regulatory, B7-H1 Antigen, Programmed Cell Death 1 Receptor, Heterografts

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