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He Z, Deng F, Ma Z, Zhang Q, He J, Ye L, Chen H, Yang D, He L, Luo J, Yan T. Molecular characterization, expression, and apoptosis regulation of siva1 in protogynous hermaphrodite fish ricefield eel (Monopterus albus). FISH PHYSIOLOGY AND BIOCHEMISTRY 2021; 47:1585-1596. [PMID: 34414556 DOI: 10.1007/s10695-021-00997-8] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/02/2020] [Accepted: 08/02/2021] [Indexed: 06/13/2023]
Abstract
Siva1, which induces extensive apoptosis, has been well characterized. To elucidate the molecular function of Siva1 in ricefield eel, molecular characterization and phylogenetic analysis were performed, and the mRNA expression in the ovary at different developmental stages and ovary tissues exposed to H2O2 and Z-VAD-FMK in vitro were also evaluated. The results indicated that ricefield eel Siva1 was highly conserved and contains three conserved motifs, despite 83 amino acid differences upstream of the initiation codon. Phylogenetic analysis demonstrated that ricefield eel Siva1 clusters together with the Siva1 protein of the other fish, with high sequence homology with that of Lates calcarifer. Quantitative real-time polymerase chain reaction analysis showed high siva1 expression levels in the ovary and low expression levels in the liver. The higher mRNA levels of siva1 were detected in the IE and IM, and the lower siva1 mRNA levels were found in the OM, IL, and TE during gonadal development. Additionally, siva1 expression levels in the ovarian tissues were significantly increased at 1 h post incubation (hpi) with H2O2 and then significantly decreased at 2 hpi; however, siva1 expression was upregulated significantly at 4 and 8 hpi, similar to the patterns observed with caspase3, which was used as a molecular marker of apoptosis. Moreover, the siva1 mRNAs were elevated significantly than that in control groups at 1 hpi, but the expression of siva1 was down-regulated dramatically at 2, 4, and 8 hpi, which were similar with that of caspase3 expression profiles after Z-VAD-FMK incubation. What's more, Pearson's correlation coefficients showed strongly positive relationships between siva1 and caspase3. These findings suggest that Siva1 plays an important apoptosis role in gonadal development of ricefield eel.
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Affiliation(s)
- Zhi He
- College of Animal Science and Technology, Sichuan Agricultural University, Chengdu, 611130, China
| | - Faqiang Deng
- College of Animal Science and Technology, Sichuan Agricultural University, Chengdu, 611130, China
| | - Zhijun Ma
- College of Animal Science and Technology, Sichuan Agricultural University, Chengdu, 611130, China
| | - Qian Zhang
- College of Animal Science and Technology, Sichuan Agricultural University, Chengdu, 611130, China
| | - Jiayang He
- College of Animal Science and Technology, Sichuan Agricultural University, Chengdu, 611130, China
| | - Lijuan Ye
- College of Animal Science and Technology, Sichuan Agricultural University, Chengdu, 611130, China
| | - Hongjun Chen
- College of Animal Science and Technology, Sichuan Agricultural University, Chengdu, 611130, China
| | - Deying Yang
- College of Animal Science and Technology, Sichuan Agricultural University, Chengdu, 611130, China
| | - Liang He
- College of Animal Science and Technology, Sichuan Agricultural University, Chengdu, 611130, China
| | - Jie Luo
- College of Animal Science and Technology, Sichuan Agricultural University, Chengdu, 611130, China
| | - Taiming Yan
- College of Animal Science and Technology, Sichuan Agricultural University, Chengdu, 611130, China.
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Kong FB, Deng QM, Deng HQ, Dong CC, Li L, He CG, Wang XT, Xu S, Mai W. Siva‑1 regulates multidrug resistance of gastric cancer by targeting MDR1 and MRP1 via the NF‑κB pathway. Mol Med Rep 2020; 22:1558-1566. [PMID: 32626967 PMCID: PMC7339453 DOI: 10.3892/mmr.2020.11211] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2019] [Accepted: 05/15/2020] [Indexed: 02/06/2023] Open
Abstract
Siva-1 is a well-known anti-apoptosis protein that serves a role in multiple types of cancer cells. However, whether Siva-1 affects multidrug resistance via the NF-κB pathway in gastric cancer is currently unknown. The present study aimed to determine the possible involvement of Siva-1 in gastric cancer anticancer drug resistance in vitro. A vincristine (VCR)-resistant KATO III/VCR gastric cancer cell line with stable Siva-1 overexpression was established. The protein expression levels of Siva-1, NF-κB, multidrug resistance 1 (MDR1) and multidrug resistance protein 1 (MRP1) were detected via western blotting. The effect of Siva-1 overexpression on anticancer drug resistance was assessed by measuring the 50% inhibitory concentration of KATO III/VCR cells to VCR, 5-fluorouracil and doxorubicin. The rate of doxorubicin efflux and apoptosis were detected by flow cytometry. Additionally, colony formation, wound healing and Transwell assays were used to detect the proliferation, migration and invasion of cells, respectively. The results of the current study revealed that the Siva-1-overexpressed KATO III/VCR gastric cancer cells exhibited a significantly decreased sensitivity to VCR, 5-fluorouracil and doxorubicin. The results of flow cytometry revealed that the percentage of apoptotic cells decreased following overexpression of Siva-1. The colony formation assay demonstrated that cell growth and proliferation were significantly promoted by Siva-1 overexpression. Additionally, Siva-1 overexpression increased the migration and invasion of KATO III/VCR cells in vitro. Western blot analysis determined that Siva-1 overexpression increased NF-κB, MDR1 and MRP1 levels. The current study demonstrated that overexpression of Siva-1, which functions as a regulator of MDR1 and MRP1 gene expression in gastric cancer cells via promotion of NF-κB expression, inhibited the sensitivity of gastric cancer cells to certain chemotherapies. These data provided novel insight into the molecular mechanisms of gastric cancer, and may be of significance for the clinical diagnosis and therapy of patients with gastric cancer.
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Affiliation(s)
- Fan-Biao Kong
- Department of Surgery, People's Hospital of Guangxi Zhuang Autonomous Region, Nanning, Guangxi Zhuang Autonomous Region 530021, P.R. China
| | - Qiao-Ming Deng
- Department of Surgery, Guangxi Traditional Chinese Medical University Affiliated First Hospital, Nanning, Guangxi Zhuang Autonomous Region 530023, P.R. China
| | - Hong-Qiang Deng
- Department of Surgery, People's Hospital of Guangxi Zhuang Autonomous Region, Nanning, Guangxi Zhuang Autonomous Region 530021, P.R. China
| | - Chen-Cheng Dong
- Department of Surgery, People's Hospital of Guangxi Zhuang Autonomous Region, Nanning, Guangxi Zhuang Autonomous Region 530021, P.R. China
| | - Lei Li
- Department of Gastrointestinal and Peripheral Vascular Surgery, People's Hospital of Guangxi Zhuang Autonomous Region, Nanning, Guangxi Zhuang Autonomous Region 530021, P.R. China
| | - Chun-Gang He
- Department of Surgery, People's Hospital of Guangxi Zhuang Autonomous Region, Nanning, Guangxi Zhuang Autonomous Region 530021, P.R. China
| | - Xiao-Tong Wang
- Department of Gastrointestinal and Peripheral Vascular Surgery, People's Hospital of Guangxi Zhuang Autonomous Region, Nanning, Guangxi Zhuang Autonomous Region 530021, P.R. China
| | - Sheng Xu
- Department of Surgery, People's Hospital of Guangxi Zhuang Autonomous Region, Nanning, Guangxi Zhuang Autonomous Region 530021, P.R. China
| | - Wei Mai
- Department of Gastrointestinal and Peripheral Vascular Surgery, People's Hospital of Guangxi Zhuang Autonomous Region, Nanning, Guangxi Zhuang Autonomous Region 530021, P.R. China
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Vachtenheim J, Lischke R, Vachtenheim J. Siva-1 emerges as a tissue-specific oncogene beyond its classic role of a proapoptotic gene. Onco Targets Ther 2018; 11:6361-6367. [PMID: 30319276 PMCID: PMC6171514 DOI: 10.2147/ott.s173001] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
Siva-1 is a typical apoptotic protein commonly activated by the p53 tumor suppressor protein and should therefore participate in a barrier against the development of cancer. It has proapoptotic activities in various cell systems. Recent findings suggest that Siva-1 possesses several other apoptosis-independent functions and interacts with many other proteins not directly involved in apoptosis. It harbors the ARF E3 ubiquitin protein ligase activity, a property that is clearly prooncogenic and leads to p53 degradation through the upregulation of the Hdm2 protein level. Surprisingly, recent evidence shows that Siva-1 absence prevents the development of non-small cell lung carcinomas in a mouse model and reveals the oncogenic roles in the same types of human cells, indicating its unique function as an oncogene in the cell context-dependent manner. Herein, we review reported activities of Siva-1 in various experimental settings and comment on its ambiguous function in tumor biology.
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Affiliation(s)
- Jiri Vachtenheim
- Third Department of Surgery, First Faculty of Medicine, Charles University Prague and University Hospital Motol, Prague, Czech Republic
| | - Robert Lischke
- Third Department of Surgery, First Faculty of Medicine, Charles University Prague and University Hospital Motol, Prague, Czech Republic
| | - Jiri Vachtenheim
- Department of Transcription and Cell Signaling, Institute of Medical Biochemistry and Laboratory Diagnostics, Charles University Prague, Czech Republic,
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