{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,7,30]],"date-time":"2026-07-30T14:28:29Z","timestamp":1785421709395,"version":"3.56.0"},"reference-count":68,"publisher":"MDPI AG","issue":"7","license":[{"start":{"date-parts":[[2026,7,20]],"date-time":"2026-07-20T00:00:00Z","timestamp":1784505600000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"name":"Jilin Provincial Department of Education Science and Technology Research project","award":["JJKH20262196BS"],"award-info":[{"award-number":["JJKH20262196BS"]}]},{"name":"Graduate Innovation Fund of Jilin University","award":["2025CX327"],"award-info":[{"award-number":["2025CX327"]}]},{"award":["2025CX327"],"award-info":[{"award-number":["2025CX327"]}],"id":[{"id":"https:\/\/ror.org\/00js3aw79","id-type":"ROR","asserted-by":"publisher"}]},{"name":"College student innovation Fund of Beihua University","award":["S202510201165"],"award-info":[{"award-number":["S202510201165"]}]},{"award":["S202510201165"],"award-info":[{"award-number":["S202510201165"]}],"id":[{"id":"https:\/\/ror.org\/013jjp941","id-type":"ROR","asserted-by":"publisher"}]},{"name":"Doctoral Research Startup Fund of Beihua University","award":["160324100"],"award-info":[{"award-number":["160324100"]}]},{"award":["160324100"],"award-info":[{"award-number":["160324100"]}],"id":[{"id":"https:\/\/ror.org\/013jjp941","id-type":"ROR","asserted-by":"publisher"}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["CIMB"],"abstract":"<jats:p>Prostate stem cell antigen (PSCA), a pivotal member of the lymphocyte antigen-6 (Ly6) protein family, has been implicated in the tumorigenesis and neoplastic progression of diverse cancer types. In this study, we conducted a thorough investigation into the role of PSCA in the development of colorectal cancer (CRC). Survival analysis based on The Cancer Genome Atlas (TCGA) dataset demonstrated that elevated expression of PSCA was tightly correlated with unfavorable overall survival, inferior relapse-free survival, and worse post-progression survival among CRC patients. Additionally, PSCA exhibited significantly higher expression levels in colorectal cancer stem cell (CRC-SCs) relative to CRC cell lines. Loss-of-function assays using small interfering RNA (siRNA)-mediated silencing were performed to evaluate the effects of PSCA downregulation on the stemness properties of CRC-SCs, including proliferative capacity, invasive potential, and apoptotic rate, which were assessed by MTS assay, transwell invasion assay, and flow cytometry analysis, respectively. The results showed that silencing PSCA markedly suppressed the proliferation and invasion of CRC-SCs, while significantly promoting cellular apoptosis. RNA sequencing was performed to identify differentially expressed genes (DEGs) in the PSCA knockdown group compared to the negative control group. Follow-up analyses using Gene Ontology (GO) and Kyoto Encyclopedia of Genes and Genomes (KEGG) indicated that these DEGs were significantly enriched in the cell-substrate adherens junction term and the mitogen-activated protein kinase 9MAPK signaling pathway. Moreover, PSCA silencing substantially reduced the phosphorylation levels of the core MAPK signaling constituents, pBRAF and pERK1\/2; conversely, PSCA overexpression prominently upregulated the expression of pBRAF and pERK1\/2. In nude mice with CRC-SCs cancer xenograft tumors, treatment with PSCA siRNA significantly decreased tumor volume and weight, while also notably extending the survival time of the tumor-bearing mice compared to the control group. Collectively, these findings confirm that PSCA plays a critical oncogenic role in CRC cancer growth and malignant progression, suggesting its potential as a novel and promising therapeutic target for CRC.<\/jats:p>","DOI":"10.3390\/cimb48070737","type":"journal-article","created":{"date-parts":[[2026,7,20]],"date-time":"2026-07-20T10:44:02Z","timestamp":1784544242000},"page":"737","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["The Oncogenic Role of Prostate Stem Cell Antigen (PSCA) in Colorectal Cancer: Implications for Targeted Therapy"],"prefix":"10.3390","volume":"48","author":[{"given":"Jinyue","family":"Duan","sequence":"first","affiliation":[{"name":"Department of Regenerative Medicine, School of Pharmaceutical Sciences, Jilin University, Changchun 130012, China"},{"name":"Department of Physiology, School of Basic Medical Sciences, Beihua University, Jilin 132013, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-4021-1067","authenticated-orcid":false,"given":"Yi","family":"Wang","sequence":"additional","affiliation":[{"name":"Department of Regenerative Medicine, School of Pharmaceutical Sciences, Jilin University, Changchun 130012, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Qisen","family":"Li","sequence":"additional","affiliation":[{"name":"Department of Regenerative Medicine, School of Pharmaceutical Sciences, Jilin University, Changchun 130012, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Yujue","family":"Wang","sequence":"additional","affiliation":[{"name":"Department of Regenerative Medicine, School of Pharmaceutical Sciences, Jilin University, Changchun 130012, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jinrui","family":"Liu","sequence":"additional","affiliation":[{"name":"Department of Regenerative Medicine, School of Pharmaceutical Sciences, Jilin University, Changchun 130012, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Yi","family":"Qi","sequence":"additional","affiliation":[{"name":"Department of Regenerative Medicine, School of Pharmaceutical Sciences, Jilin University, Changchun 130012, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Yichi","family":"Zhang","sequence":"additional","affiliation":[{"name":"Department of Regenerative Medicine, School of Pharmaceutical Sciences, Jilin University, Changchun 130012, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-7568-3369","authenticated-orcid":false,"given":"Changhao","family":"Fu","sequence":"additional","affiliation":[{"name":"VA Palo Alto Health Care System, Medical School, Stanford University, Palo Alto, CA 94304, USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-8020-3921","authenticated-orcid":false,"given":"Zhongyi","family":"Cong","sequence":"additional","affiliation":[{"name":"Department of Regenerative Medicine, School of Pharmaceutical Sciences, Jilin University, Changchun 130012, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Can","family":"Wang","sequence":"additional","affiliation":[{"name":"Department of Physiology, School of Basic Medical Sciences, Beihua University, Jilin 132013, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-4664-8940","authenticated-orcid":false,"given":"Manman","family":"Su","sequence":"additional","affiliation":[{"name":"Department of Regenerative Medicine, School of Pharmaceutical Sciences, Jilin University, Changchun 130012, China"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1968","published-online":{"date-parts":[[2026,7,20]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"21","DOI":"10.1038\/s41572-023-00432-7","article-title":"Young-onset colorectal cancer","volume":"9","author":"Spaander","year":"2023","journal-title":"Nat. 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