Evidence map›Paper›PMID 40149008›Full record

ArticleCell & bioscience2025

Loss of OBSCN expression promotes bladder cancer progression but enhances the efficacy of PD-L1 inhibitors.

Tao Wang, Tuanjie Guo, Juanjuan Sun, Xinyue Zang, Lei Dong, Jian Zhang, Siteng Chen, Guihua Chen, Sicong Ma, Xinyu Zhai and 5 more

Abstract read
In one paragraph

Article in Cell & bioscience, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.

0numbers the graph read from it
0cells of the map it votes in
1citing papers in PubMed
–field-weighted citation impact
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

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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

1 citing paper in PubMed.

  1. Article
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

15 authors.

Tao Wang *Department of Urology, Shuguang Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai, China.
Tuanjie Guo *Department of Urology, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China.
Juanjuan Sun *Department of Pathology, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China.
Xinyue Zang *Department of Urology, Shuguang Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai, China.
Lei DongDepartment of Pathology, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China.
Jian ZhangDepartment of Urology, Shanghai Geriatric Medical Center, Shanghai, China.
Siteng ChenDepartment of Urology, Renji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China.
Guihua ChenDepartment of Urology, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China.
Sicong MaDepartment of Urology, Shuguang Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai, China.
Xinyu ZhaiDepartment of Urology, Shuguang Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai, China.
Chuanmin ChuDepartment of Urology, Shuguang Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai, China.
Chaofu WangDepartment of Pathology, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China.
Xiang WangDepartment of Urology, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China. xiang.wang1@shgh.cn.
Dongliang XuDepartment of Urology, Shuguang Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai, China. dr_xudongliang@shutcm.edu.cn.
Mingyue TanDepartment of Urology, Shuguang Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai, China. drmingyuetan@shutcm.edu.cn.

Funding

National Natural Science Foundation for Young Scholars of China 82303746National Natural Science Foundation of China 82172920National Natural Science Foundation of China 82174122The Health Discipline Leader Program of Shanghai Health Commission 2022XD011The Promotion and Optimization Management of Diagnosis and treatment technology in Municipal Hospitals of Shanghai Shenkang Hospital Development Center SHDC12023113
6 · The paper itself

Abstract

backgroundAs the objective overall response rate to immune checkpoint inhibitors (ICIs) is less than 30% in late stage or metastatic bladder cancer (BLCA), elucidating the intrinsic mechanisms of immune evasion is of great importance for the discovery of predictive and prognostic biomarkers and the exploration of novel targets for intervention. Recent studies have shown that OBSCN and the cytoskeletal protein it encodes, obscurin, play an important role in tumour progression. However, no studies have reported the role of OBSCN in BLCA.

methodsRNA sequencing and clinical data were downloaded from multiple public databases including The Cancer Genome Atlas and the Gene Expression Omnibus. Immunohistochemistry (IHC) was performed on tissue microarrays including 80 BLCA patients from Shuguang Hospital. Kaplan-Meier curves with log-rank test, univariate and multivariate COX regression were performed to evaluate the prognostic efficacy of OBSCN expression. In vitro experiments were conducted to determine the role of OBSCN deficiency in promoting BLCA progression. Pan-cancer tumour immune microenvironment (TIME) analysis was performed to explore the potential correlation between OBSCN deficiency and immune evasion.

resultsPan-cancers and single-cell sequencing analysis revealed that the expression level and proportion of OBSCN was significantly decreased in BLCA cells compared to normal urothelium. Survival curves showed that BLCA patients with low OBSCN expression had a worse prognosis, yet a better clinical response to PD-L1 ICIs. Gene set variation analysis and Gene set enrichment analysis revealed that epithelial-mesenchymal transition (EMT) and immune-related processes were significantly enriched in BLCA samples with low OBSCN expression. In vitro experiments identified that OBSCN-deficient BLCA cells enhanced invasion, migration and EMT. Pan-cancer analysis of TIME revealed that neoantigen, tumor mutation burden, CD8

conclusionsThis study confirmed that BLCA patients with low OBSCN expression had a worse prognosis but a superior response to ICIs, providing a reference for individualised treatment of BLCA patients.

Indexed as

Bladder cancerImmune checkpoint inhibitorImmunotherapyOBSCNObscurin

Identifiers

PMID40149008
PMCPMC11948897

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