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Xu B, Guo J, Chen M. Circ_0017274 acts on miR-637/CDX2 axis to facilitate cisplatin resistance in gastric cancer. Clin Exp Pharmacol Physiol 2022; 49:1105-1115. [PMID: 35748299 DOI: 10.1111/1440-1681.13692] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2022] [Revised: 06/14/2022] [Accepted: 06/19/2022] [Indexed: 11/29/2022]
Abstract
Currently, a substantial amount of circular RNAs (circRNAs) are closely associated with cancer development and the occurrence of drug resistance, however, circ_0017274 in cisplatin (CDDP) resistance in gastric cancer (GC) has not been addressed. Real-time quantitative polymerase chain reaction (RT-qPCR) and western blot were utilized for circ_0017274, microRNA-637 (miR-637) and caudal-related homeobox transcription factor 2 (CDX2) contents analysis. Analysis of IC50, proliferation, cell cycle, apoptosis, migration and invasion of GC cells using Cell Counting Kit-8 (CCK8), 5-ethynyl-2'-deoxyuridine (EdU), flow cytometry or transwell assays. Interaction between miR-637 and circ_0017274 or CDX2 was validated under the application of luciferase reporter system, RNA immunoprecipitation (RIP) analysis, and Pull-down assay. The effect of circ_0017274 on CDDP sensitivity in vivo was tapped by xenograft models. Circ_0017274 and CDX2 had higher content in CDDP-resistant GC tissues and cells, while miR-637 was lower content. CDDP resistance and development of GC cells were arrested when circ_0017274 level was reduced in vitro. MiR-637 acted as a target of circ_0017274, and miR-637 downregulation abated the phenomenon of elevated sensitivity of sh-circ_0017274 to CDDP. MiR-637 was also demonstrated to interact with CDX2 and to co-regulate CDDP sensitivity in GC cells. The xenograft models also established that circ_0017274 downregulation strengthened CDDP sensitivity and thus curtailed tumor growth in vivo. Circ_0017274 downregulation boosted CDDP sensitivity by acting on miR-637/CDX2 in CDDP-resistant GC cells. This article is protected by copyright. All rights reserved.
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Affiliation(s)
- Bing Xu
- Department of Pharmacy, The First People's Hospital of Lianyungang, Lianyungang, China
| | - Jinjuan Guo
- The First Affiliated Hospital of Kangda College of Nanjing Medical University, Lianyungang, China
| | - Mei Chen
- Department of Pharmacy, The First People's Hospital of Lianyungang, Lianyungang, China
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2
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Huo X, Xiao X, Zhang S, Du X, Li C, Bai Z, Chen Z. Characterization and clinical evaluation of microsatellite instability and loss of heterozygosity in tumor-related genes in gastric cancer. Oncol Lett 2021; 21:430. [PMID: 33868468 PMCID: PMC8045158 DOI: 10.3892/ol.2021.12691] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2020] [Accepted: 02/10/2021] [Indexed: 12/24/2022] Open
Abstract
Microsatellite instability (MSI) detection is widely used in the diagnosis and prognosis evaluation of colorectal cancer. However, for gastric cancer (GC), there is no standard panel of microsatellites (MSs) used in clinical guidance. The present study aimed to identify useful predictors of the clinical features and for the prognosis of GC, based on an investigation of MSI and loss of heterozygosity (LOH) in tumor-related genes. First, from 20 tumor-related genes which were proven to be important to the development of GC, 91 MSs were identified, and PCR amplification, short tandem repeat scanning analysis and TA clone sequencing were used to analyze MSI and LOH in the first set of 90 GC samples. Subsequently, the same method was used to detect the MSI/LOH of the optimized loci in the second set of 136 GC samples. MSI/LOH in the mismatch repair genes was highly consistent with that in oncogenes and tumor suppressor genes, respectively. The length of the core sequence was a main factor for the MSI/LOH rate. The MSI of 12 single loci was significantly associated with lymph node metastasis. The MSI in TP53-1 and the LOH in MGMT-10 were significantly associated with early stages of tumor infiltration depth. The LOH in MGMT-10, PTN-2 and MCC-17 was significantly associated with TNM stage. The LOH in TP53-1 and ERBB2-12 was associated with adenocarcinoma. The MSI/LOH in 6 single loci of 5 tumor-related genes was associated with poor prognosis of GC. The present study demonstrated that the MSI/LOH of loci in tumor-associated genes was associated with 4 clinicopathological characteristics and outcomes of GC. These results may provide potential specific biomarkers for the clinical prediction and treatment of GC.
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Affiliation(s)
- Xueyun Huo
- School of Basic Medical Sciences, Capital Medical University, Beijing 100069, P.R. China.,Tumor Model Laboratory, Beijing Key Laboratory of Cancer Invasion and Metastasis Research, Beijing 100069, P.R. China
| | - Xiaoqin Xiao
- School of Basic Medical Sciences, Capital Medical University, Beijing 100069, P.R. China.,Tumor Model Laboratory, Beijing Key Laboratory of Cancer Invasion and Metastasis Research, Beijing 100069, P.R. China
| | - Shuangyue Zhang
- School of Basic Medical Sciences, Capital Medical University, Beijing 100069, P.R. China.,Tumor Model Laboratory, Beijing Key Laboratory of Cancer Invasion and Metastasis Research, Beijing 100069, P.R. China
| | - Xiaoyan Du
- School of Basic Medical Sciences, Capital Medical University, Beijing 100069, P.R. China.,Tumor Model Laboratory, Beijing Key Laboratory of Cancer Invasion and Metastasis Research, Beijing 100069, P.R. China
| | - Changlong Li
- School of Basic Medical Sciences, Capital Medical University, Beijing 100069, P.R. China.,Tumor Model Laboratory, Beijing Key Laboratory of Cancer Invasion and Metastasis Research, Beijing 100069, P.R. China
| | - Zhigang Bai
- Tumor Model Laboratory, Beijing Key Laboratory of Cancer Invasion and Metastasis Research, Beijing 100069, P.R. China.,Department of General Surgery, Beijing Friendship Hospital, Capital Medical University, Beijing 100050, P.R. China.,Department of General Surgery, National Clinical Research Center for Digestive Diseases, Beijing 100050, P.R. China
| | - Zhenwen Chen
- School of Basic Medical Sciences, Capital Medical University, Beijing 100069, P.R. China.,Tumor Model Laboratory, Beijing Key Laboratory of Cancer Invasion and Metastasis Research, Beijing 100069, P.R. China
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Zhao Y, Zhou X, He Y, Liao C. SLC6A1-miR133a-CDX2 loop regulates SK-OV-3 ovarian cancer cell proliferation, migration and invasion. Oncol Lett 2018; 16:4977-4983. [PMID: 30250563 PMCID: PMC6144910 DOI: 10.3892/ol.2018.9273] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2015] [Accepted: 01/05/2018] [Indexed: 02/07/2023] Open
Abstract
The present study assessed the expression of solute carrier 6 member 1 (SLC6A1) in ovarian cancer (OC) tissues and evaluated the effect of silencing SLC6A1 or caudal type homeobox 2 (CDX2) on the proliferation, migration, and invasion of SK-OV-3 OC cells. The levels of caudal type homeobox 2 (CDX2) and SLC6A1 mRNA were also examined in OC SK-OV-3, OVCAR3 and A2780 cell lines. The mRNA levels of CDX2 and SLC6A1 in SK-OV-3 OC cells were assessed following transection with microRNA (miR) 133a mimics; the mRNA and protein levels of SLC6A1 were determined following the silencing of CDX2, and the mRNA expression of CDX2 was gauged following the silencing of SLC6A1. A luciferase reporter assay was performed to assess the effect of miR133a on the CDX2 and SLC6A1 3′-untranslated regions (3′UTRs). The proliferation, migration and invasion rate of SK-OV-3 cells were then examined following the silencing of CDX2 or SLC6A1. The expression of SLC6A1 was increased in OC compared with adjacent tissue. The expression of CDX2 and SLC6A1 in SK-OV-3 and OVCAR3 cells was increased compared with A2780 cells (P<0.05). The level of CDX2 and SLC6A1 mRNA in SK-OV-3 cells decreased when the cells were transected with the miR133a mimics, compared with a negative control (P<0.05). Transfection with the miR133a mimics significantly reduced the luciferase activity of reporter plasmids with the SLC6A1 or CDX2 3′UTRs (P<0.05). The mRNA level of CDX2 was decreased subsequent to the silencing of SLC6A1; the mRNA and protein level of SLC6A1 were decreased when CDX2 was silenced (P<0.05). The proliferation, migration, and invasion of SK-OV-3 cells were significantly reduced following the silencing of CDX2 or SLC6A1 (P<0.05). CDX2 may therefore be inferred to promote the proliferation, migration and invasion in SK-OV-3 OC cells, acting as a competing endogenous RNA.
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Affiliation(s)
- Yuan Zhao
- Institute of Medical Biology, Chinese Academy of Medical Sciences, Peking Union Medical College, Kunming, Yunnan 650118, P.R. China
| | - Xiaokui Zhou
- Department of Gynecology and Obstetrics, Sichuan University, Chengdu, Sichuan 610041, P.R. China
| | - Yangyan He
- Department of Gynecology and Obstetrics, Sichuan University, Chengdu, Sichuan 610041, P.R. China
| | - Changjun Liao
- College of Medicine, Chengdu Medical College, Chengdu, Sichuan 610000, P.R. China
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Joo MK, Park JJ, Chun HJ. Impact of homeobox genes in gastrointestinal cancer. World J Gastroenterol 2016; 22:8247-8256. [PMID: 27729732 PMCID: PMC5055856 DOI: 10.3748/wjg.v22.i37.8247] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/04/2016] [Revised: 08/13/2016] [Accepted: 08/23/2016] [Indexed: 02/06/2023] Open
Abstract
Homeobox genes, including HOX and non-HOX genes, have been identified to be expressed aberrantly in solid tumors. In gastrointestinal (GI) cancers, most studies have focused on the function of non-HOX genes including caudal-related homeobox transcription factor 1 (CDX1) and CDX2. CDX2 is a crucial factor in the development of pre-cancerous lesions such as Barrett’s esophagus or intestinal metaplasia in the stomach, and its tumor suppressive role has been investigated in colorectal cancers. Recently, several HOX genes were reported to have specific roles in GI cancers; for example, HOXA13 in esophageal squamous cell cancer and HOXB7 in stomach and colorectal cancers. HOXD10 is upregulated in colorectal cancer while it is silenced epigenetically in gastric cancer. Thus, it is essential to examine the differential expression pattern of various homeobox genes in specific tumor types or cell lineages, and understand their underlying mechanisms. In this review, we summarize the available research on homeobox genes and present their potential value for the prediction of prognosis in GI cancers.
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Gao W, Li Q, Zhu R, Jin J. La Autoantigen Induces Ribosome Binding Protein 1 (RRBP1) Expression through Internal Ribosome Entry Site (IRES)-Mediated Translation during Cellular Stress Condition. Int J Mol Sci 2016; 17:E1174. [PMID: 27447629 PMCID: PMC4964545 DOI: 10.3390/ijms17071174] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2016] [Revised: 07/13/2016] [Accepted: 07/13/2016] [Indexed: 01/23/2023] Open
Abstract
The function of ribosome binding protein 1 (RRBP1) is regulating the transportation and secretion of some intracellular proteins in mammalian cells. Transcription of RRBP1 is induced by various cytokines. However, few studies focused on the process of RRPB1 mRNA translation. The RRBP1 mRNA has a long 5' untranslated region that potentially formed a stable secondary structure. In this study, we show that the 5' UTR of RRBP1 mRNA contains an internal ribosome entry site (IRES). Moreover, the RRBP1 expression is induced by chemotherapeutic drug paclitaxel or adriamycin in human hepatocellular carcinoma cells and accompanied with the increased expression of La autoantigen (La), which binds to RRBP1 IRES element and facilitates translation initiation. Interestingly, we found IRES-mediated RRBP1 translation is also activated during serum-starvation condition which can induce cytoplasmic localization of La. After mapping the entire RRBP1 5' UTR, we determine the core IRES activity is located between nt-237 and -58. Furthermore, two apical GARR loops within the functional RRBP1 IRES elements may be important for La binding. These results strongly suggest an important role for IRES-dependent translation of RRBP1 mRNA in hepatocellular carcinoma cells during cellular stress conditions.
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Affiliation(s)
- Wenqing Gao
- Laboratory of Molecular Pharmacology, School of Pharmaceutical Sciences, Jiangnan University, 1800 Lihu Road, Wuxi 214122, China.
| | - Qi Li
- Laboratory of Molecular Pharmacology, School of Pharmaceutical Sciences, Jiangnan University, 1800 Lihu Road, Wuxi 214122, China.
| | - Ruiyu Zhu
- Laboratory of Molecular Pharmacology, School of Pharmaceutical Sciences, Jiangnan University, 1800 Lihu Road, Wuxi 214122, China.
| | - Jian Jin
- Laboratory of Molecular Pharmacology, School of Pharmaceutical Sciences, Jiangnan University, 1800 Lihu Road, Wuxi 214122, China.
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Yang G, Qin H, Raza A, Saukel GW, Solomon N, Michelotti M, Raghavan R. Pyloric gland adenoma of gallbladder-reports of two cases and a brief review of literature. J Gastrointest Oncol 2016; 7:S81-7. [PMID: 27034818 DOI: 10.3978/j.issn.2078-6891.2015.015] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
Abstract
Adenomas of the gallbladder are uncommon benign epithelial neoplasms. Rarely, they can give rise to gallbladder cancer, which is the most common malignancy of the biliary tract, carrying a poor prognosis and decreased survival. Here we report the case histories of two patients, 40-year-old and 53-year-old males who presented with >1 cm gallbladder polyps, which were detected and confirmed using various imaging studies. Cholecystectomy was performed on both patients and the subsequent pathologic exam revealed 1.2 and 1.6 cm polyps in the lumen. Histopathologically, both polyps showed features reminiscent of "pyloric" gland type of adenoma. The differences between the two cases in regard to histopathological and immunohistochemical characteristics will be discussed. We will also briefly review the latest nomenclature on such low-grade polypoid gallbladder entities.
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Affiliation(s)
- Guang Yang
- 1 Department of Pathology, 2 Department of Medicine, 3 Division of General Surgery, Loma Linda University Medical Center, Loma Linda, California 92354, USA
| | - Haixia Qin
- 1 Department of Pathology, 2 Department of Medicine, 3 Division of General Surgery, Loma Linda University Medical Center, Loma Linda, California 92354, USA
| | - Anwar Raza
- 1 Department of Pathology, 2 Department of Medicine, 3 Division of General Surgery, Loma Linda University Medical Center, Loma Linda, California 92354, USA
| | - George W Saukel
- 1 Department of Pathology, 2 Department of Medicine, 3 Division of General Surgery, Loma Linda University Medical Center, Loma Linda, California 92354, USA
| | - Naveenraj Solomon
- 1 Department of Pathology, 2 Department of Medicine, 3 Division of General Surgery, Loma Linda University Medical Center, Loma Linda, California 92354, USA
| | - Marcos Michelotti
- 1 Department of Pathology, 2 Department of Medicine, 3 Division of General Surgery, Loma Linda University Medical Center, Loma Linda, California 92354, USA
| | - Ravi Raghavan
- 1 Department of Pathology, 2 Department of Medicine, 3 Division of General Surgery, Loma Linda University Medical Center, Loma Linda, California 92354, USA
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Finding gastric cancer related genes and clinical biomarkers for detection based on gene-gene interaction network. Math Biosci 2015; 276:1-7. [PMID: 26700107 DOI: 10.1016/j.mbs.2015.12.001] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2015] [Revised: 10/27/2015] [Accepted: 12/04/2015] [Indexed: 12/12/2022]
Abstract
BACKGROUND/OBJECTIVE Gastric cancer (GC) is the second leading cause of death resulted from cancer globally. The most common cause of GC is the infection of Helicobacter pylori, approximately 11% of cases are caused by genetic factors. The objective of this study was to develop an effective computational method to meaningfully interpret these GC-related genes and to predict potential prognostic genes for clinical detection. METHODS We employed the shortest path algorithm and permutation test to probe the genes that have relationship with known GC genes in gene-gene interaction network. We calculated the enrichment scores of gene ontology and pathways of gastric cancer related genes to characterize these genes in terms of molecular features. The optimal features that primly representing the gastric cancer related genes were selected using Random Forest classification and incremental feature selection. Random Forest classification was also used for the prediction of the novel gastric cancer related genes based on the selected features and the identification of novel prognostic genes based on the expression of genes. RESULTS Based on the shortest path analysis of 36 known GC genes, 39 genes occurring in shortest path were identified as GC-related genes. In subsequent classification, 4153 gene ontology terms and 157 pathway terms were identified as the optimal features to depict these gastric cancer related genes. Based on them, a total of 886 genes were predicted as related genes. These 886 genes could serve as expression biomarkers for clinical detection and they achieved a 100% accuracy for distinguishing gastric cancer from a case-control dataset, better than any of 886 random selected genes did. CONCLUSION By analyzing the features of known GC-related genes, we employed a systematic method to predict gastric cancer related genes and novel prognostic genes for accurate clinical detection.
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Li S, Chen X, Zhou L, Wang BM. Farnesoid X receptor signal is involved in deoxycholic acid-induced intestinal metaplasia of normal human gastric epithelial cells. Oncol Rep 2015; 34:2674-82. [PMID: 26324224 DOI: 10.3892/or.2015.4207] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2015] [Accepted: 07/21/2015] [Indexed: 11/06/2022] Open
Abstract
The farnesoid X receptor (FXR) signaling pathway is known to be involved in the metabolism of bile acid, glucose and lipid. In the present study, we demonstrated that 400 µmol/l deoxycholic acid (DCA) stimulation promotes the proliferation of normal human gastric epithelial cells (GES-1). In addition, DCA activated FXR and increased the expression of intestinal metaplasia genes, including caudal-related homeobox transcription factor 2 (Cdx2) and mucin 2 (MUC2). The treatment of FXR agonist GW4064/antagonist guggulsterone (Gug.) significantly increased/decreased the expression levels of FXR, Cdx2 and MUC2 protein in DCA-induced GES-1 cells. GW4064/Gug. also enhanced/reduced the nuclear factor-κB (NF-κB) activity and binding of the Cdx2 promoter region and NF-κB, the most common subunit p50 protein. Taken together, the results indicated that DCA is capable of modulating the expression of Cdx2 and the downstream MUC2 via the nuclear receptor FXR-NF-κB activity in normal gastric epithelial cells. FXR signaling pathway may therefore be involved in the intestinal metaplasia of human gastric mucosa.
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Affiliation(s)
- Shu Li
- Department of Gastroenterology and Hepatology, Tianjin General Hospital, Tianjin Medical University, Heping, Tianjin 300052, P.R. China
| | - Xin Chen
- Department of Gastroenterology and Hepatology, Tianjin General Hospital, Tianjin Medical University, Heping, Tianjin 300052, P.R. China
| | - Lu Zhou
- Department of Gastroenterology and Hepatology, Tianjin General Hospital, Tianjin Medical University, Heping, Tianjin 300052, P.R. China
| | - Bang-Mao Wang
- Department of Gastroenterology and Hepatology, Tianjin General Hospital, Tianjin Medical University, Heping, Tianjin 300052, P.R. China
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Kononov AV, Mozgovoĭ SI, Shimanskaia AG, Grishchenko RK, Nazarov AN. [Immunohistochemical detection of biomolecular markers for metaplastic mucosal atrophy in gastric biopsy specimens]. Arkh Patol 2015; 76:44-50. [PMID: 25842925 DOI: 10.17116/patol201476644-50] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
OBJECTIVE To estimate the validity of the signs of metaplastic atrophic gastritis to elaborate a marker principle of its detection. SUBJECTS AND METHODS Two hundred diagnostic cases morphologically diagnosed with chronic gastritis were selected for examination. The validity of the histological and immunohistochemical signs/markers reflecting a gland abnormality (hyperplasia of smooth muscle cells and argyrophilic and elastic fibers) and a cell phenotype change (intestinal and pyloric metaplasia): CDX-2, Shh, villin, CD10, MUC2, and MUC5AC was estimated in gastric biopsy specimens with atrophic gastritis forms verified in accordance with international classifications. The validity of the signs/markers was assessed, by calculating the sensitivity, specificity, prognostic value of positive and negative results, and positive and negative likelihood ratios. RESULTS There were 3 molecules: CDX-2 is a nuclear transcription factor associated with intestinal differentiation; CCD10 is a brush border membrane-bound mycin and MUC2 is an intestinal-type mycin, which showed a high validity like the markers of metaplastic atrophic gastritis. An algorithm that could probably evaluate atrophic gastritis was elaborated for the successive immunohistochemical identification of the above-mentioned marker. CONCLUSION The proposed technical decision to verify atrophic gastritis by the biomarker method may be not an alternative, but complementary technique of identifying the form of atrophic gastritis.
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Affiliation(s)
- A V Kononov
- GBOU VPO "Omskaia gosudarstvennaia meditsinskaia akademiia" Minzdrava Rossii, Rossiĭskaia Federatsiia
| | - S I Mozgovoĭ
- GBOU VPO "Omskaia gosudarstvennaia meditsinskaia akademiia" Minzdrava Rossii, Rossiĭskaia Federatsiia
| | - A G Shimanskaia
- GBOU VPO "Omskaia gosudarstvennaia meditsinskaia akademiia" Minzdrava Rossii, Rossiĭskaia Federatsiia
| | - R K Grishchenko
- GBOU VPO "Omskaia gosudarstvennaia meditsinskaia akademiia" Minzdrava Rossii, Rossiĭskaia Federatsiia
| | - A N Nazarov
- GBOU VPO "Omskaia gosudarstvennaia meditsinskaia akademiia" Minzdrava Rossii, Rossiĭskaia Federatsiia
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