Evidence map›Paper›PMID 33354502›Full record

ArticleActa pharmaceutica Sinica. B2020

Berberine diminishes cancer cell PD-L1 expression and facilitates antitumor immunity

Yang Liu, Xiaojia Liu, Na Zhang, Mingxiao Yin, Jingwen Dong, Qingxuan Zeng, Genxiang Mao, Danqing Song, Lu Liu, Hongbin Deng

Open access · diamondAbstract read
In one paragraph

Article in Acta pharmaceutica Sinica. B, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 137 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
137citing papers in PubMed, 2 pooled it
14.7field-weighted citation impact, top 1% 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

137 citing papers in PubMed, 2 syntheses or guidelines pooled it, 214 citations in OpenAlex.

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  16. Molecular landscape of Berberine's therapeutic potential in gastrointestinal disorders.Journal of traditional Chinese medicine = Chung i tsa chih ying wen pan · 2026
    Review
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  20. Berberine AlleviatesInternational journal of molecular sciences · 2026
    Article

77 more citing papers are in PubMed but not listed here.

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

10 authors at 3 institutions in 1 country.

Yang LiuInstitute of Medicinal Biotechnology, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing 100050, China.
Xiaojia LiuInstitute of Medicinal Biotechnology, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing 100050, China.
Na ZhangInstitute of Medicinal Biotechnology, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing 100050, China.
Mingxiao YinInstitute of Medicinal Biotechnology, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing 100050, China.
Jingwen DongInstitute of Medicinal Biotechnology, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing 100050, China.
Qingxuan ZengInstitute of Medicinal Biotechnology, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing 100050, China.
Genxiang MaoZhejiang Provincial Key Lab of Geriatrics, Department of Geriatrics, Zhejiang Hospital, Hangzhou 310013, China.
Danqing SongInstitute of Medicinal Biotechnology, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing 100050, China.
Lu LiuQingdao Women and Children's Hospital, Qingdao University, Qingdao 266034, China.
Hongbin DengInstitute of Medicinal Biotechnology, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing 100050, China.
Chinese Academy of Medical Sciences & Peking Union Medical College · CNQingdao University · CNZhejiang Hospital · CN

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Programmed cell death-1 (PD-1)/programmed cell death ligand-1 (PD-L1) blocking therapy has become a major pillar of cancer immunotherapy. Compared with antibodies targeting, small-molecule checkpoint inhibitors which have favorable pharmacokinetics are urgently needed. Here we identified berberine (BBR), a proven anti-inflammation drug, as a negative regulator of PD-L1 from a set of traditional Chinese medicine (TCM) chemical monomers. BBR enhanced the sensitivity of tumour cells to co-cultured T-cells by decreasing the level of PD-L1 in cancer cells. In addition, BBR exerted its antitumor effect in Lewis tumor xenograft mice through enhancing tumor-infiltrating T-cell immunity and attenuating the activation of immunosuppressive myeloid-derived suppressor cells (MDSCs) and regulatory T-cells (Tregs). BBR triggered PD-L1 degradation through ubiquitin (Ub)/proteasome-dependent pathway. Remarkably, BBR selectively bound to the glutamic acid 76 of constitutive photomorphogenic-9 signalosome 5 (CSN5) and inhibited PD-1/PD-L1 axis through its deubiquitination activity, resulting in ubiquitination and degradation of PD-L1. Our data reveals a previously unrecognized antitumor mechanism of BBR, suggesting BBR is small-molecule immune checkpoint inhibitor for cancer treatment.

Indexed as

AMC, 7-amino-4-methylcoumarinBaf, bafilomycinBBR, berberineBerberineCHX, cycloheximideCOP9 signalosome 5CQ, chloroquineCSN5, COP9 signalosome 5IB, immunoblottingICB, immune checkpoint blockadeIFN-γ, interferon-gammaIHC, immunohistochemistryImmune checkpoint blockadeMDSCs, myeloid-derived suppressor cellsNFAT, nuclear factor of activated T-cellsNSCLC, non-small cell lung cancerPD-1/PD-L1 axisPD-1, programmed cell death-1PD-L1PD-L1, programmed cell death ligand-1qRT-PCR, quantitative real-time polymerase chain reactionSPR, surface plasmon resonanceT-cell immunityTCM, traditional Chinese medicineTILs, tumor-infiltrating lymphocytesTNF-α, tumor necrosis factor-αTregs, regulatory T-lymphocytesUb, ubiquitin

Identifiers

PMID33354502
PMCPMC7745128
OpenAlexW3039398777

What OpenQuestion holds

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LicenceCC BY-NC-ND
Read underepoch 390

Registered trials

None linked

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.