Integrated Multiomics and Functional Validation Identify CLSPN as a Central Integrator of Genomic Instability and Immune Remodeling in Colorectal Cancer
5 affiliations
- 1The Center for Clinical Molecular Medical Detection Innovative and Translational Laboratory of Molecular Diagnostics Laboratory Medicine Center The First Affiliated Hospital of Chongqing Medical University Chongqing China cqmu.edu.cn
- 2Key Laboratory of Clinical Laboratory Diagnostics (Ministry of Education) College of Laboratory Medicine Chongqing Medical University Chongqing China cqmu.edu.cn
- 3Department of Oncology Southwest Hospital Third Military Medical University (Army Medical University) Chongqing China tmmu.edu.cn
- 4Western Institute of Digital-Intelligent Medicine Chongqing China
- 5First Clinical College Affiliated First Hospital Chongqing Medical University Chongqing China cqmu.edu.cn
Abstract
Colorectal cancer (CRC) is characterized by pervasive genomic instability, yet the molecular mechanisms linking replication stress responses to genome alteration and phenotypic evolution remain incompletely understood. Here, we performed an integrative multiomics analysis combined with functional validation to investigate the role of CLSPN, a key adaptor of the ATR‐CHK1 pathway, in CRC. Machine learning–based feature selection identified CLSPN as a robust prognostic factor. Single‐cell and spatial transcriptomic analyses revealed that CLSPN is preferentially enriched in highly proliferative tumor cell populations and spatially localized within tumor core regions. Elevated CLSPN expression was strongly associated with increased copy number variation burden (FGA, FGG, and FGL) and chromosomal instability, indicating enhanced tolerance to replication stress and accumulation of genomic alterations. This genomic instability was further linked to remodeling of the tumor immune microenvironment. Functional assays demonstrated that CLSPN promotes proliferation, invasion, and migration while suppressing apoptosis in CRC cells. Collectively, these findings identify CLSPN as a key regulator of replication stress–driven genomic instability and highlight its role in shaping mutation‐associated tumor evolution, providing a potential target for therapeutic intervention.
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BibTeX
@article{wang2026integrated,
title = {{Integrated Multiomics and Functional Validation Identify CLSPN as a Central Integrator of Genomic Instability and Immune Remodeling in Colorectal Cancer}},
author = {Peng Wang and Jianyu Xia and Lexin Wang and Biao Hu and Haoran Jiang and Xinglan Wang and Xiaolu Fang and Xuekai Liu and Xiang Zhao and Xiaosong Li},
journal = {Human Mutation},
year = {2026},
month = oct,
doi = {10.1155/humu/4686848},
url = {https://doi.org/10.1155/humu/4686848},
note = {CC BY 4.0},
}
RIS
TY - JOUR
TI - Integrated Multiomics and Functional Validation Identify CLSPN as a Central Integrator of Genomic Instability and Immune Remodeling in Colorectal Cancer
AU - Peng Wang
AU - Jianyu Xia
AU - Lexin Wang
AU - Biao Hu
AU - Haoran Jiang
AU - Xinglan Wang
AU - Xiaolu Fang
AU - Xuekai Liu
AU - Xiang Zhao
AU - Xiaosong Li
PY - 2026
DA - 2026/10/26
JO - Human Mutation
DO - 10.1155/humu/4686848
UR - https://doi.org/10.1155/humu/4686848
AB - Colorectal cancer (CRC) is characterized by pervasive genomic instability, yet the molecular mechanisms linking replication stress responses to genome alteration and phenotypic evolution remain incompletely understood. Here, we performed an integrative multiomics analysis combined with functional validation to investigate the role of CLSPN, a key adaptor of the ATR‐CHK1 pathway, in CRC. Machine learning–based feature selection identified CLSPN as a robust prognostic factor. Single‐cell and spatial transcriptomic analyses revealed that CLSPN is preferentially enriched in highly proliferative tumor cell populations and spatially localized within tumor core regions. Elevated CLSPN expression was strongly associated with increased copy number variation burden (FGA, FGG, and FGL) and chromosomal instability, indicating enhanced tolerance to replication stress and accumulation of genomic alterations. This genomic instability was further linked to remodeling of the tumor immune microenvironment. Functional assays demonstrated that CLSPN promotes proliferation, invasion, and migration while suppressing apoptosis in CRC cells. Collectively, these findings identify CLSPN as a key regulator of replication stress–driven genomic instability and highlight its role in shaping mutation‐associated tumor evolution, providing a potential target for therapeutic intervention.
SN - 1059-7794
SN - 1098-1004
ER -