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Jin Q, Feng J, Yan Y, Kuang Y. Prognostic and immunological role of adaptor related protein complex 3 subunit mu2 in colon cancer. Sci Rep 2024; 14:483. [PMID: 38177168 PMCID: PMC10767120 DOI: 10.1038/s41598-023-50452-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2023] [Accepted: 12/20/2023] [Indexed: 01/06/2024] Open
Abstract
The expression levels and prognostic role of AP3M2 in colorectal adenocarcinoma (CRAC) have yet to be fully unveiled. Our study comprehensively investigated the clinical significance of AP3M2 in colorectal cancer through an extensive bioinformatics data mining process (TCGA, GEO, GEPIA, Timer, Ualcan, ROCPLOT, and David), followed by experimental validation. We found AP3M2 is a cancer gene, which can be used to distinguish between colorectal cancer and colorectal adenomas, liver metastasis, lung metastasis, colorectal polyp. Higher AP3M2 expression levels were associated with longer overall survival in colon adenocarcinoma. AP3M2 might be the primary biomarker for oxaliplatin in colon cancer and an acquired resistance biomarker for oxaliplatin and 5-fu. AP3M2 was positively associated with CD274, CTLA4. AP3M2 might be associated with T-cell, NF-kappaB transcription factor activity, and response to hypoxia. AP3M2 could predict chemotherapy effectiveness and prognosis for colon cancer patients. AP3M2 might inhibit tumor growth via influencing tumor-infiltrating immune cells in the context of Tumor microenvironment. AP3M2 plays as an oncogene in CRAC and is suggested as a new potential biotarget for therapy.
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Affiliation(s)
- Qianqian Jin
- Department of Cardiovascular Surgery, The First Affiliated Hospital of Xi'an Jiaotong University, 277 West Yanta Road, Xi'an, 710061, Shaanxi, P. R. China
| | - Jiahao Feng
- Research Centre, The Seventh Affiliated Hospital of Sun Yat-Sen University, Shenzhen, 518107, China
| | - Yang Yan
- Department of Cardiovascular Surgery, The First Affiliated Hospital of Xi'an Jiaotong University, 277 West Yanta Road, Xi'an, 710061, Shaanxi, P. R. China.
| | - Yong Kuang
- Digestive Disease Center, The Seventh Affiliated Hospital of Sun Yat-Sen University, Shenzhen, 518107, China.
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Yang L, Yang M, Cui C, Long X, Li Y, Dai W, Lang T, Zhou Q. The myo-inositol biosynthesis rate-limiting enzyme ISYNA1 suppresses the stemness of ovarian cancer via Notch1 pathway. Cell Signal 2023; 107:110688. [PMID: 37105506 DOI: 10.1016/j.cellsig.2023.110688] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2023] [Revised: 04/13/2023] [Accepted: 04/23/2023] [Indexed: 04/29/2023]
Abstract
Cancer stem cells (CSCs) play a central role in ovarian cancer (OC), understanding regulatory mechanisms governing their stemness is critical. Here, we report ISYNA1, the rate-limiting enzyme in myo-inositol biosynthesis, as a suppressor of OC regulating cancer stemness. We identified ISYNA1 as a differentially expressed gene in normal ovary and ovarian cancer tissues, as well as OC cells and OCSCs. Low ISYNA1 expression correlated with poor prognosis in OC patients. In addition, ISYNA1 was negatively correlated with CSC markers, and ISYNA1-related pathways were enriched in Wnt, Notch, and other critical cancer pathways. ISYNA1 deficiency promoted OC cell growth, migration, and invasion ability in vitro and in vivo. Knockdown of ISYNA1 increased stemness of OC cells, including self-renewal, CSC markers expression, ALDH activity, and proportion of CD44+/CD117+ CSCs. Conversely, ectopic overexpression of ISYNA1 suppresses cell proliferation, migration, invasion and stemness of OC cells. Mechanistically, ISYNA1 inhibits OC stemness by regulating myo-inositol to suppress Notch1 signaling. In summary, these data provide evidence that ISYNA1 act as a tumor suppressor in OC and a regulator of stemness, providing insight into potentially targetable pathways for ovarian cancer therapy.
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Affiliation(s)
- Lingling Yang
- School of Medicine, Chongqing University, Chongqing 400044, People's Republic of China
| | - Muyao Yang
- College of Bioengineering, Chongqing University, Chongqing 400044, People's Republic of China
| | - Chenxi Cui
- School of Medicine, Chongqing University, Chongqing 400044, People's Republic of China
| | - Xingtao Long
- Department of Gynecologic Oncology, Chongqing University Cancer Hospital, Chongqing 400030, People's Republic of China
| | - Yunzhe Li
- College of Bioengineering, Chongqing University, Chongqing 400044, People's Republic of China
| | - Weili Dai
- School of Medicine, Chongqing University, Chongqing 400044, People's Republic of China
| | - Tingyuan Lang
- Department of Gynecologic Oncology, Chongqing University Cancer Hospital, Chongqing 400030, People's Republic of China.
| | - Qi Zhou
- School of Medicine, Chongqing University, Chongqing 400044, People's Republic of China; Department of Gynecologic Oncology, Chongqing University Cancer Hospital, Chongqing 400030, People's Republic of China.
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Zhuang Y, Lan S, Zhong W, Huang F, Peng J, Zhang S. Comprehensive Analysis of PPMs in Pancreatic Adenocarcinoma Indicates the Value of PPM1K in the Tumor Microenvironment. Cancers (Basel) 2023; 15:cancers15020474. [PMID: 36672423 PMCID: PMC9856814 DOI: 10.3390/cancers15020474] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2022] [Revised: 12/28/2022] [Accepted: 01/04/2023] [Indexed: 01/15/2023] Open
Abstract
Early metastasis and resistance to traditional therapy are responsible for the poor prognosis of pancreatic adenocarcinoma patients. Metal-dependent protein phosphatases (PPMs) have been proven to play a crucial role in the initiation and progression of various tumors. Nevertheless, the expression and function of distinct PPMs in pancreatic adenocarcinoma have not been fully elucidated. In this study, we investigated the mRNA expression level, prognostic value, and the relationship between the expression of PPMs and the tumor microenvironment in pancreatic adenocarcinoma using Oncomine, TCGA and GTEx, GEO, Kaplan-Meier plotter, STRING, GeneMANIA, and HPA databases and R packages. GO and KEGG analysis revealed that PPMs and their differential co-expression genes are attributed to cell-cell adhesion and immune cell infiltration. Among these, PPM1K was downregulated in the tissue and peripheral blood of PAAD patients, whose expression level was negatively related to poor prognosis. Further to this, PPM1K was found to play a role in the epithelial-mesenchymal transition and immune infiltration. ROC curves showed that PPM1K had a good predictive value for pancreatic adenocarcinoma. The knockdown of PPM1K markedly promoted the proliferation and migration of pancreatic cancer cells, confirming its role in tumor suppressor activity in PAAD. This study demonstrates the potential clinical utility of PPM1K in tumor immunotherapy and brings about novel insights into the prognostic value of PPM1K in pancreatic adenocarcinoma.
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Affiliation(s)
- Yanyan Zhuang
- Guangdong Provincial Key Laboratory of Malignant Tumor Epigenetics and Gene Regulation, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou 510120, China
- Department of Gastroenterology, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, No. 107, Yanjiangxi Road, Guangzhou 510120, China
| | - Sihua Lan
- Department of Gastroenterology, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, No. 107, Yanjiangxi Road, Guangzhou 510120, China
| | - Wa Zhong
- Department of Gastroenterology, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, No. 107, Yanjiangxi Road, Guangzhou 510120, China
| | - Fengting Huang
- Department of Gastroenterology, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, No. 107, Yanjiangxi Road, Guangzhou 510120, China
| | - Juanfei Peng
- Department of Gastroenterology, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, No. 107, Yanjiangxi Road, Guangzhou 510120, China
| | - Shineng Zhang
- Guangdong Provincial Key Laboratory of Malignant Tumor Epigenetics and Gene Regulation, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou 510120, China
- Department of Gastroenterology, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, No. 107, Yanjiangxi Road, Guangzhou 510120, China
- Correspondence:
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