Evidence map›Paper›PMID 41071325›Full record

ArticleCancer immunology, immunotherapy : CII2025

The single-cell atlas of colorectal cancer reveals cellular heterogeneity and key molecular features of the tumor immune microenvironment.

JunHu Li, ZhiQiang Liu, BoYu Zhang, LiuPing You, YueNan Huang

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Article in Cancer immunology, immunotherapy : CII, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 4 papers.

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4citing papers in PubMed
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1 · What the graph read from it

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3 · Its place in the literature

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4 citing papers in PubMed.

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4 · The record

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5 · Who and what money

Authors and funding

5 authors.

JunHu LiDepartment of General Surgery, The Second Affiliated Hospital of Harbin Medical University, No. 246 Xuefu Road, Harbin, 150086, Heilongjiang Province, China.
ZhiQiang LiuDepartment of General Surgery, The Second Affiliated Hospital of Harbin Medical University, No. 246 Xuefu Road, Harbin, 150086, Heilongjiang Province, China.
BoYu ZhangDepartment of General Surgery, The Second Affiliated Hospital of Harbin Medical University, No. 246 Xuefu Road, Harbin, 150086, Heilongjiang Province, China.
LiuPing YouDepartment of General Surgery, The Second Affiliated Hospital of Harbin Medical University, No. 246 Xuefu Road, Harbin, 150086, Heilongjiang Province, China.
YueNan HuangDepartment of General Surgery, The Second Affiliated Hospital of Harbin Medical University, No. 246 Xuefu Road, Harbin, 150086, Heilongjiang Province, China. 202401516@hrbmu.edu.cn.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundColorectal cancer (CRC) is a highly heterogeneous malignancy, with its tumor immune microenvironment (TIME) playing a crucial role in tumor progression, immune evasion, and treatment response. Despite insights from single-cell technologies, challenges such as small samples and inconsistent annotations have limited a comprehensive understanding. Thus, a large-scale, high-resolution single-cell atlas is needed to fully explore the heterogeneity of CRC TIME and guide personalized treatment.

methodsWe analyzed single-cell transcriptomic data from 100 CRC samples (371,223 cells). Immune, stromal, and epithelial cells in the TIME were clustered, annotated, and functionally analyzed. Transcription factor networks were inferred using SCENIC, differentiation states assessed with CytoTRACE, and cell-cell communication analyzed via CellPhoneDB. TIME subtypes were constructed from bulk RNA-seq data, followed by survival analysis. SCRN1 was further validated through in vitro experiments.

resultsThis study presents a comprehensive single-cell CRC atlas, revealing significant heterogeneity in T cells, B cells, myeloid cells, fibroblasts, endothelial cells, and epithelial cells within the TIME. We defined two immune ecological subtypes: subtype 1 (enriched in metabolic and motility pathways with poor prognosis) and subtype 2 (enriched in immune response pathways, with better prognosis and greater immunotherapy potential). High SCRN1 expression in malignant epithelial cells correlated with poor prognosis and metastasis. In vitro experiments confirmed the role of SCRN1 in promoting CRC cell proliferation and migration.

conclusionsThis study provides a comprehensive characterization of the CRC TIME, links TIME subtypes to prognosis, and identifies SCRN1 as a potential therapeutic target, offering insights for CRC precision subtyping and immunotherapy strategies.

Indexed as

Biomarkers, TumorColorectal NeoplasmsSingle-Cell AnalysisTumor MicroenvironmentGene Expression ProfilingGene Expression Regulation, NeoplasticHumansPrognosisTranscriptomeBiomarkers, TumorColorectal cancerEpithelial cellsSCRN1TIME subtypeTumor immune microenvironment

Identifiers

PMID41071325
PMCPMC12514102

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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.