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Hong Z, Xie W, Zhuo H, Wei X, Wang K, Cheng J, Lin L, Hou J, Chen X, Cai J. Crosstalk between Cancer Cells and Cancer-Associated Fibroblasts Mediated by TGF-β1-IGFBP7 Signaling Promotes the Progression of Infiltrative Gastric Cancer. Cancers (Basel) 2023; 15:3965. [PMID: 37568781 PMCID: PMC10417438 DOI: 10.3390/cancers15153965] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2023] [Revised: 07/26/2023] [Accepted: 08/01/2023] [Indexed: 08/13/2023] Open
Abstract
Patients with infiltrative-type gastric cancer (GC) (Ming's classification) have a poor prognosis due to more metastasis and recurrence. Cancer-associated fibroblasts (CAFs) in infiltrative-type extracellular matrix (ECM) have specific characteristics compared with those of expansive types with respect to metastasis, but the mechanism is still unclear. Based on our proteomics data, TCGA data analysis, and immunohistochemical staining results, significantly higher expression of IGFBP7 was observed in GC, especially in the infiltrative type, and was associated with a poor prognosis. Combining single-cell transcriptome data from GEO and multiple immunofluorescence staining on tissue showed that the differential expression of IGFBP7 mainly originated from myofibroblastic CAFs, the subgroup with higher expression of PDGFRB and α-SMA. After treating primary normal fibroblasts (NFs) with conditional medium or recombined protein, it was demonstrated that XGC-1-derived TGF-β1 upregulated the expression of IGFBP7 in the cells and its secretion via the P-Smad2/3 pathway and mediated its activation with higher FAP, PDGFRB, and α-SMA expression. Then, either conditional medium from CAFs with IGFBP7 overexpression or recombined IGFBP7 protein promoted the migration, invasion, colony formation, and sphere growth ability of XGC-1 and MGC-803, respectively. Moreover, IGFBP7 induced EMT in XGC-1. Therefore, our study clarified that in the tumor microenvironment, tumor-cell-derived TGF-β1 induces the appearance of the IGFBP7+ CAF subgroup, and its higher IGFBP7 extracellular secretion level accelerates the progression of tumors.
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Affiliation(s)
- Zhijun Hong
- Department of Gastrointestinal Surgery, Zhongshan Hospital of Xiamen University, School of Medicine, Xiamen University, Xiamen 361004, China; (Z.H.); (W.X.); (H.Z.); (K.W.); (J.C.); (L.L.); (J.H.)
- Xiamen Municipal Key Laboratory of Gastrointestinal Oncology, Xiamen 361004, China
- Institute of Gastrointestinal Oncology, Medical College of Xiamen University, No. 201-209, Hubin South Road, Xiamen 361004, China; (X.W.); (X.C.)
| | - Wen Xie
- Department of Gastrointestinal Surgery, Zhongshan Hospital of Xiamen University, School of Medicine, Xiamen University, Xiamen 361004, China; (Z.H.); (W.X.); (H.Z.); (K.W.); (J.C.); (L.L.); (J.H.)
- Xiamen Municipal Key Laboratory of Gastrointestinal Oncology, Xiamen 361004, China
- Institute of Gastrointestinal Oncology, Medical College of Xiamen University, No. 201-209, Hubin South Road, Xiamen 361004, China; (X.W.); (X.C.)
| | - Huiqin Zhuo
- Department of Gastrointestinal Surgery, Zhongshan Hospital of Xiamen University, School of Medicine, Xiamen University, Xiamen 361004, China; (Z.H.); (W.X.); (H.Z.); (K.W.); (J.C.); (L.L.); (J.H.)
- Xiamen Municipal Key Laboratory of Gastrointestinal Oncology, Xiamen 361004, China
- Institute of Gastrointestinal Oncology, Medical College of Xiamen University, No. 201-209, Hubin South Road, Xiamen 361004, China; (X.W.); (X.C.)
| | - Xujin Wei
- Institute of Gastrointestinal Oncology, Medical College of Xiamen University, No. 201-209, Hubin South Road, Xiamen 361004, China; (X.W.); (X.C.)
- The Graduate School, Fujian Medical University, Fuzhou 350004, China
| | - Kang Wang
- Department of Gastrointestinal Surgery, Zhongshan Hospital of Xiamen University, School of Medicine, Xiamen University, Xiamen 361004, China; (Z.H.); (W.X.); (H.Z.); (K.W.); (J.C.); (L.L.); (J.H.)
- Xiamen Municipal Key Laboratory of Gastrointestinal Oncology, Xiamen 361004, China
- Institute of Gastrointestinal Oncology, Medical College of Xiamen University, No. 201-209, Hubin South Road, Xiamen 361004, China; (X.W.); (X.C.)
| | - Jia Cheng
- Department of Gastrointestinal Surgery, Zhongshan Hospital of Xiamen University, School of Medicine, Xiamen University, Xiamen 361004, China; (Z.H.); (W.X.); (H.Z.); (K.W.); (J.C.); (L.L.); (J.H.)
- Xiamen Municipal Key Laboratory of Gastrointestinal Oncology, Xiamen 361004, China
- Institute of Gastrointestinal Oncology, Medical College of Xiamen University, No. 201-209, Hubin South Road, Xiamen 361004, China; (X.W.); (X.C.)
| | - Lingyun Lin
- Department of Gastrointestinal Surgery, Zhongshan Hospital of Xiamen University, School of Medicine, Xiamen University, Xiamen 361004, China; (Z.H.); (W.X.); (H.Z.); (K.W.); (J.C.); (L.L.); (J.H.)
- Xiamen Municipal Key Laboratory of Gastrointestinal Oncology, Xiamen 361004, China
- Institute of Gastrointestinal Oncology, Medical College of Xiamen University, No. 201-209, Hubin South Road, Xiamen 361004, China; (X.W.); (X.C.)
| | - Jingjing Hou
- Department of Gastrointestinal Surgery, Zhongshan Hospital of Xiamen University, School of Medicine, Xiamen University, Xiamen 361004, China; (Z.H.); (W.X.); (H.Z.); (K.W.); (J.C.); (L.L.); (J.H.)
- Xiamen Municipal Key Laboratory of Gastrointestinal Oncology, Xiamen 361004, China
- Institute of Gastrointestinal Oncology, Medical College of Xiamen University, No. 201-209, Hubin South Road, Xiamen 361004, China; (X.W.); (X.C.)
| | - Xin Chen
- Institute of Gastrointestinal Oncology, Medical College of Xiamen University, No. 201-209, Hubin South Road, Xiamen 361004, China; (X.W.); (X.C.)
- The Graduate School, Fujian Medical University, Fuzhou 350004, China
| | - Jianchun Cai
- Department of Gastrointestinal Surgery, Zhongshan Hospital of Xiamen University, School of Medicine, Xiamen University, Xiamen 361004, China; (Z.H.); (W.X.); (H.Z.); (K.W.); (J.C.); (L.L.); (J.H.)
- Xiamen Municipal Key Laboratory of Gastrointestinal Oncology, Xiamen 361004, China
- Institute of Gastrointestinal Oncology, Medical College of Xiamen University, No. 201-209, Hubin South Road, Xiamen 361004, China; (X.W.); (X.C.)
- The Graduate School, Fujian Medical University, Fuzhou 350004, China
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Zhang H, Zhuo H, Hou J, Cai J. Machine learning models predict the mTOR signal pathway-related signature in the gastric cancer involving 2063 samples of 7 centers. Aging (Albany NY) 2023; 15:6152-6162. [PMID: 37341987 PMCID: PMC10373976 DOI: 10.18632/aging.204817] [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: 03/14/2023] [Accepted: 05/17/2023] [Indexed: 06/22/2023]
Abstract
Gastric cancer, as a tumor with poor prognosis, has been widely studied. Distinguishing the types of gastric cancer is helpful. Using the transcriptome data of gastric cancer in our study, relevant proteins of mTOR signaling pathway were screened to identify key genes by four machine learning models, and the models were validated in external datasets. Through correlation analysis, we explored the relationship between five key genes and immune cells and immunotherapy. By inducing cellular senescence in gastric cancer cells with bleomycin, we investigated changes in the expression levels of HRAS through western blot. By PCA clustering analysis, we used the five key genes for gastric cancer typing and explored differences in drug sensitivity and enrichment pathways between different clustering groups. We found that the SVM machine learning model was superior, and the five genes (PPARA, FNIP1, WNT5A, HRAS, HIF1A) were highly correlated with different immune cells in multiple databases. These five key genes have a significant impact on immunotherapy. Using the five genes for gastric cancer gene typing, four genes were expressed higher in group 1 and were more sensitive to drugs in group 2. These results suggest that subtype-specific markers can improve the treatment and provide precision drugs for gastric cancer patients.
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Affiliation(s)
- Hao Zhang
- Department of Gastrointestinal Surgery, Zhongshan Hospital of Xiamen University, School of Medicine, Xiamen University, Xiamen 361004, Fujian, China
- Institute of Gastrointestinal Oncology, Medical College of Xiamen University, Xiamen 361004, Fujian, China
- Xiamen Municipal Key Laboratory of Gastrointestinal Oncology, Xiamen 361004, Fujian, China
| | - Huiqin Zhuo
- Department of Gastrointestinal Surgery, Zhongshan Hospital of Xiamen University, School of Medicine, Xiamen University, Xiamen 361004, Fujian, China
- Institute of Gastrointestinal Oncology, Medical College of Xiamen University, Xiamen 361004, Fujian, China
- Xiamen Municipal Key Laboratory of Gastrointestinal Oncology, Xiamen 361004, Fujian, China
| | - Jingjing Hou
- Department of Gastrointestinal Surgery, Zhongshan Hospital of Xiamen University, School of Medicine, Xiamen University, Xiamen 361004, Fujian, China
- Institute of Gastrointestinal Oncology, Medical College of Xiamen University, Xiamen 361004, Fujian, China
- Xiamen Municipal Key Laboratory of Gastrointestinal Oncology, Xiamen 361004, Fujian, China
| | - Jianchun Cai
- Department of Gastrointestinal Surgery, Zhongshan Hospital of Xiamen University, School of Medicine, Xiamen University, Xiamen 361004, Fujian, China
- Institute of Gastrointestinal Oncology, Medical College of Xiamen University, Xiamen 361004, Fujian, China
- Xiamen Municipal Key Laboratory of Gastrointestinal Oncology, Xiamen 361004, Fujian, China
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Xu H, Chai CP, Miao X, Tang H, Hu JJ, Zhang H, Zhou WC. Establishment and characterization of a new human ampullary carcinoma cell line, DPC-X1. World J Gastroenterol 2023; 29:2642-2656. [PMID: 37213400 PMCID: PMC10198051 DOI: 10.3748/wjg.v29.i17.2642] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/26/2022] [Revised: 02/17/2023] [Accepted: 04/13/2023] [Indexed: 05/23/2023] Open
Abstract
BACKGROUND An in-depth study of the pathogenesis and biological characteristics of ampullary carcinoma is necessary to identify appropriate treatment strategies. To date, only eight ampullary cancer cell lines have been reported, and a mixed-type ampullary carcinoma cell line has not yet been reported.
AIM To establish a stable mixed-type ampullary carcinoma cell line originating from Chinese.
METHODS Fresh ampullary cancer tissue samples were used for primary culture and subculture. The cell line was evaluated by cell proliferation assays, clonal formation assays, karyotype analysis, short tandem repeat (STR) analysis and transmission electron microscopy. Drug resistances against oxaliplatin, paclitaxel, gemcitabine and 5-FU were evaluated by cell counting kit-8 assay. Subcutaneous injection 1 × 106 cells to three BALB/c nude mice for xenograft studies. The hematoxylin-eosin staining was used to detect the pathological status of the cell line. The expression of biomarkers cytokeratin 7 (CK7), cytokeratin 20 (CK20), cytokeratin low molecular weight (CKL), Ki67 and carcinoembryonic antigen (CEA) were determined by immunocytochemistry assay.
RESULTS DPC-X1 was continuously cultivated for over a year and stably passaged for more than 80 generations; its population doubling time was 48 h. STR analysis demonstrated that the characteristics of DPC-X1 were highly consistent with those of the patient’s primary tumor. Furthermore, karyotype analysis revealed its abnormal sub-tetraploid karyotype. DPC-X1 could efficiently form organoids in suspension culture. Under the transmission electron microscope, microvilli and pseudopods were observed on the cell surface, and desmosomes were visible between the cells. DPC-X1 cells inoculated into BALB/C nude mice quickly formed transplanted tumors, with a tumor formation rate of 100%. Their pathological characteristics were similar to those of the primary tumor. Moreover, DPC-X1 was sensitive to oxaliplatin and paclitaxel and resistant to gemcitabine and 5-FU. Immunohistochemistry showed that the DPC-X1 cells were strongly positive for CK7, CK20, and CKL; the Ki67 was 50%, and CEA was focally expressed.
CONCLUSION Here, we have constructed a mixed-type ampullary carcinoma cell line that can be used as an effective model for studying the pathogenesis of ampullary carcinoma and drug development.
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Affiliation(s)
- Hao Xu
- The Forth Department of General Surgery, The First Hospital of Lanzhou University, Lanzhou 730000, Gansu Province, China
| | - Chang-Peng Chai
- The Forth Department of General Surgery, The First Hospital of Lanzhou University, Lanzhou 730000, Gansu Province, China
| | - Xin Miao
- State Key Laboratory of Veterinary Etiological Biology, Key Laboratory of Animal Virology of the Ministry of Agriculture, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou 730000, Gansu Province, China
| | - Huan Tang
- The Second Clinical Medical College, Lanzhou University, Lanzhou 730000, Gansu Province, China
| | - Jin-Jing Hu
- The Forth Department of General Surgery, The First Hospital of Lanzhou University, Lanzhou 730000, Gansu Province, China
| | - Hui Zhang
- Department of General Surgery, The Second Hospital of Lanzhou University, Lanzhou 730000, Gansu Province, China
| | - Wen-Ce Zhou
- The Second Clinical Medical College, Lanzhou University, Lanzhou 730000, Gansu Province, China
- Department of General Surgery, The Second Hospital of Lanzhou University, Lanzhou 730000, Gansu Province, China
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Du M, Zhang S, Liu X, Xu C, Zhang X. Ploidy Status of Ovarian Cancer Cell Lines and Their Association with Gene Expression Profiles. Biomolecules 2023; 13:biom13010092. [PMID: 36671477 PMCID: PMC9855421 DOI: 10.3390/biom13010092] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2022] [Revised: 12/22/2022] [Accepted: 12/29/2022] [Indexed: 01/03/2023] Open
Abstract
As a cancer type potentially dominated by copy number variations, ovarian cancer shows hyperploid karyotypes and large-scale chromosome alterations, which might be promising biomarkers correlated with tumor metastasis and chemoresistance. Experimental studies have provided more information about the roles of aneuploids and polyploids in ovarian cancer. However, ploidy evaluation of ovarian cancer cell lines is still limited, even in some ploidy-related research. Herein, the ploidy landscape of 51 ovarian cancer cell lines from the Cancer Cell Line Encyclopedia (CCLE) were analyzed, and the ploidy statuses of 13 human ovarian cancer cell lines and 2 murine cell lines were evaluated using G-banding and flow cytometry. Most human ovarian cancer cell lines were aneuploid, with modal numbers of 52-86 and numerical complexity ranging from 5 to 12. A2780, COV434 and TOV21G were screened as diploid cell lines, with a modal number of 46, a low aneuploid score and a near-diploid ploidy value. Two murine cell lines, both OV2944-HM1 and ID-8, were near-tetraploid. Integrated information on karyotypes, aneuploid score and ploidy value supplied references for a nondiploid model construction and a parallel analysis of diploid versus aneuploid. Moreover, the gene expression profiles were compared between diploid and aneuploid cell lines. The functions of differentially expressed genes were mainly enriched in terms of protein function regulation, TGF-β signaling and cell adhesion molecules. Genes downregulated in the aneuploid group were mainly related to metabolism and protein function regulation, and genes upregulated in the aneuploid group were mainly involved in immune regulation. Differentially expressed genes were randomly distributed on all chromosomes, while chromosome 1 alteration might contribute to immune-related alterations in aneuploid cell lines. Chromosome 19 alteration might be potentially significant for aneuploid ovarian cancer cell lines and patients, which needs further verification in ploidy research.
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Affiliation(s)
- Ming Du
- Obstetrics and Gynecology Hospital, Fudan University, Shanghai 200011, China
| | - Shuo Zhang
- Obstetrics and Gynecology Hospital, Fudan University, Shanghai 200011, China
| | - Xiaoxia Liu
- Obstetrics and Gynecology Hospital, Fudan University, Shanghai 200011, China
| | - Congjian Xu
- Obstetrics and Gynecology Hospital, Fudan University, Shanghai 200011, China
- Shanghai Key Laboratory of Female Reproductive Endocrine Related Diseases, Shanghai 200011, China
- Department of Obstetrics and Gynecology of Shanghai Medical School, Fudan University, Shanghai 200032, China
- Correspondence: (C.X.); (X.Z.)
| | - Xiaoyan Zhang
- Obstetrics and Gynecology Hospital, Fudan University, Shanghai 200011, China
- Shanghai Key Laboratory of Female Reproductive Endocrine Related Diseases, Shanghai 200011, China
- Department of Obstetrics and Gynecology of Shanghai Medical School, Fudan University, Shanghai 200032, China
- Correspondence: (C.X.); (X.Z.)
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Zhang L, Zhuo H, Hong Z, Hou J, Cheng J, Cai J. HSPA6, a novel prognostic and therapeutic biomarker, associated with Ming classification in gastric cancer. J Clin Lab Anal 2022; 37:e24763. [PMID: 36458368 PMCID: PMC9833989 DOI: 10.1002/jcla.24763] [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: 09/30/2022] [Revised: 10/26/2022] [Accepted: 10/29/2022] [Indexed: 12/04/2022] Open
Abstract
OBJECTIVE This study aimed to explore the clinical relevance of heat shock protein family A member 6 (HSPA6) in gastric cancer (GC) and its effect on GC cell proliferation. METHODS HSPA6 mRNA and protein levels were analyzed by bioinformatics, RT-qPCR, western blot and immunohistochemistry. HSPA6 was correlated with clinicopathological variables by the Chi-square test. Kaplan-Meier survival analysis and the univariate and multivariate Cox models were used to assess the prognostic value of HSPA6. Nomogram was used to predict overall survival in patients with GC. Knockdown or over-expression of HSPA6 in GC cell lines was constructed by lentiviral transduction. EdU and CCK-8 assay were used to detect cell proliferation. In vivo mouse tumor models were performed to evaluate the effects of HSPA6 on GC growth. RESULTS HSPA6 were significantly upregulated in the GC tissues compared to the normal stomach epithelium and were associated with Ming classification (p < 0.001) and tumor size (p = 0.002). Patients with high expression of HSPA6 showed worse survival compared to the low expression group. HSPA6 was identified to be an independent prognostic biomarker for GC. HSPA6 was functionally annotated with the cell cycle, G2M checkpoint and Hippo pathway. Knockdown of HSPA6 suppressed XGC-1 cell proliferation both in vitro and in vivo. Overexpression of HSPA6 in AGS cells increased proliferation rates, increased the levels of cyclinB1 and YAP and decreased that of phosphorylated YAP. HSPA6 knockdown in the NUGC2 cells had the opposite effect. CONCLUSIONS HSPA6 promotes GC proliferation by the Hippo pathway, as a novel prognostic biomarker and potential therapeutic target.
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Affiliation(s)
- Lihua Zhang
- Department of Gastrointestinal SurgeryZhongshan Hospital of Xiamen University, School of Medicine, Xiamen UniversityXiamenChina,Institute of Gastrointestinal Oncology, School of MedicineXiamen UniversityXiamenChina,Xiamen Municipal Key Laboratory of Gastrointestinal OncologyXiamenChina
| | - Hui‐qin Zhuo
- Department of Gastrointestinal SurgeryZhongshan Hospital of Xiamen University, School of Medicine, Xiamen UniversityXiamenChina,Institute of Gastrointestinal Oncology, School of MedicineXiamen UniversityXiamenChina,Xiamen Municipal Key Laboratory of Gastrointestinal OncologyXiamenChina
| | - Zhi‐jun Hong
- Department of Gastrointestinal SurgeryZhongshan Hospital of Xiamen University, School of Medicine, Xiamen UniversityXiamenChina,Institute of Gastrointestinal Oncology, School of MedicineXiamen UniversityXiamenChina,Xiamen Municipal Key Laboratory of Gastrointestinal OncologyXiamenChina
| | - Jing‐jing Hou
- Department of Gastrointestinal SurgeryZhongshan Hospital of Xiamen University, School of Medicine, Xiamen UniversityXiamenChina,Institute of Gastrointestinal Oncology, School of MedicineXiamen UniversityXiamenChina,Xiamen Municipal Key Laboratory of Gastrointestinal OncologyXiamenChina
| | - Jia Cheng
- Department of Gastrointestinal SurgeryZhongshan Hospital of Xiamen University, School of Medicine, Xiamen UniversityXiamenChina,Institute of Gastrointestinal Oncology, School of MedicineXiamen UniversityXiamenChina,Xiamen Municipal Key Laboratory of Gastrointestinal OncologyXiamenChina
| | - Jianchun Cai
- Department of Gastrointestinal SurgeryZhongshan Hospital of Xiamen University, School of Medicine, Xiamen UniversityXiamenChina,Institute of Gastrointestinal Oncology, School of MedicineXiamen UniversityXiamenChina,Xiamen Municipal Key Laboratory of Gastrointestinal OncologyXiamenChina
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TRIM50 Inhibits Proliferation and Metastasis of Gastric Cancer via Promoting β-Catenin Degradation. JOURNAL OF ONCOLOGY 2022; 2022:5936753. [PMID: 36046365 PMCID: PMC9423946 DOI: 10.1155/2022/5936753] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/25/2022] [Accepted: 07/15/2022] [Indexed: 12/02/2022]
Abstract
Background Gastric cancer (GC) is a common malignancy with a poor prognosis. Tripartite motif-containing 50 (TRIM50) belongs to the TRIM family and is reported to be related to numerous cancers. This study aimed to investigate the function of TRIM50 in GC. Methods Three microarray datasets (GSE13911, GSE79973, and GSE19826) containing GC and adjacent nontumor tissues were used for bioinformatics analysis to screen GC-related genes and assess the associations between GC development and TRIM50 expression. Then, TRIM50 expression in GC cells was detected at mRNA and protein levels. After TRIM50 was knockdown or overexpressed, the effect of TRIM50 on the proliferation and metastasis of GC cells was analyzed using Cell Counting Kit-8 (CCK-8), flow cytometry, scratch, and Transwell assays. The interaction between TRIM50 and β-catenin was analyzed. The expression of cell cycle-, migration-, invasion-, and Wnt/β-catenin signaling pathway-related proteins was detected by Western blot. Furthermore, we measured the role of TRIM50 overexpression on tumor growth as well as the Wnt/β-catenin signaling pathway in vivo. In addition, XAV939 (a WNT/β-catenin signaling pathway inhibitor) was used to clarify the mechanism of TRIM50 on GC. Results Bioinformatics revealed that TRIM50 expression was decreased in GC samples and associated with GC development. In vitro study revealed that TRIM50 overexpression impeded the GC cell proliferation and metastasis, while TRIM50 knockdown presented the opposite results. In addition, TRIM50 interacted with β-catenin to induce the degradation of β-catenin. In in vivo assay, TRIM50 overexpression inhibited tumor growth and blocked the Wnt/β-catenin signaling pathway. In addition, TRIM50 knockdown-promoted cell proliferation and metastasis in GC cells were inverted by XAV939. Conclusion TRIM50 overexpression may inhibit cell proliferation and metastasis in GC via β-catenin degradation, indicating that TRIM50 could be a target for the treatment of GC.
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Bian X, Cao F, Wang X, Hou Y, Zhao H, Liu Y. Establishment and characterization of a new human colon cancer cell line, PUMC-CRC1. Sci Rep 2021; 11:13122. [PMID: 34162944 PMCID: PMC8222262 DOI: 10.1038/s41598-021-92491-7] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2021] [Accepted: 04/22/2021] [Indexed: 12/24/2022] Open
Abstract
Colorectal cancer (CRC) is one of the most common and fatal gastrointestinal cancers worldwide. Considering their diversity, the establishment of new continuous CRC cell lines with clear genetic backgrounds will provide useful tools for exploring molecular mechanisms, screening and evaluating antitumor drugs in CRC studies. Our de novo CRC cell line, PUMC-CRC1 (Peking Union Medical College Colorectal Cancer 1) was derived from a 47-year-old Chinese female patient diagnosed with moderately to poorly differentiated colon adenocarcinoma. Multiple experiments were used for full characterization. The new cell line was epithelial-like and was passaged for more than 40 times, with a population doubling time of 44 h in vitro, detected by cell counts. The cells exhibited complicated chromosomal abnormalities. The tumor formation rate in SCID mice was 100%. The xenograft tumor was adenocarcinoma with poor to moderate differentiation by Haematoxylin and Eosin staining (H&E) sections. Immunohistochemistry (IHC) analysis and next-generation sequencing (NGS) revealed microsatellite stable (MSS), APC (p.T1493fs) inactivation, KRAS (p.G12V) activation, and SMAD4 (p.V506A) mutation. Quality control of the cell line proved mycoplasma negative and identical STR profile with that of the original tissue, and no interspecific or intraspecific cross contamination was detected. In conclusion, PUMC-CRC1 was a newly established and well characterized human colon cancer cell line, which might be a good model for both in vitro and in vivo studies of the mechanism of colon cancer progression and the treatment strategies for MSS CRC.
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Affiliation(s)
- Xiaocui Bian
- Department of Pathology, Cell Resource Center, Institute of Basic Medical Sciences, Chinese Academy of Medical Sciences (CAMS) & School of Basic Medicine, Peking Union Medical College (PUMC), Beijing, 100005, People's Republic of China
| | - Fang Cao
- Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education), Department of Pathology, Peking University Cancer Hospital & Institute, Beijing, 100142, People's Republic of China
| | - Xiaowan Wang
- Department of Pathology, Cell Resource Center, Institute of Basic Medical Sciences, Chinese Academy of Medical Sciences (CAMS) & School of Basic Medicine, Peking Union Medical College (PUMC), Beijing, 100005, People's Republic of China
| | - Yuhong Hou
- Department of Pathology, Cell Resource Center, Institute of Basic Medical Sciences, Chinese Academy of Medical Sciences (CAMS) & School of Basic Medicine, Peking Union Medical College (PUMC), Beijing, 100005, People's Republic of China
| | - Haitao Zhao
- Department of Liver Surgery, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College (CAMS & PUMC), Beijing, 100730, People's Republic of China.
| | - Yuqin Liu
- Department of Pathology, Cell Resource Center, Institute of Basic Medical Sciences, Chinese Academy of Medical Sciences (CAMS) & School of Basic Medicine, Peking Union Medical College (PUMC), Beijing, 100005, People's Republic of China.
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