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Wu F, Xu J, Jin X, Zhu Y, Gao W, Liu M, Zhang Y, Qian W, Huang X, Zhao D, Feng G, Hou S, Xi X. TRIM8 promotes ovarian cancer proliferation and migration by targeting VDAC2 for ubiquitination and degradation. Cancer Med 2024; 13:e7396. [PMID: 38881325 PMCID: PMC11180974 DOI: 10.1002/cam4.7396] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2023] [Revised: 03/21/2024] [Accepted: 06/02/2024] [Indexed: 06/18/2024] Open
Abstract
BACKGROUND Ovarian cancer is a common gynecological tumor with high malignant potential and poor prognosis. TRIM8, is involved in the development of various tumors, but its precise regulatory role in ovarian cancer is still unknown. AIMS The aim of this study was to explore the specific mechanism by which TRIM8 regulates ovarian cancer. MATERIALS AND METHODS We used bioinformatics analysis to screen for high expression of TRIM8 in ovarian cancer. The expression of TRIM8 in healthy and cancerous ovarian tissues was assessed by immunofluorescence. TRIM8 was silenced or overexpressed in ovarian cancer cell lines, with cell proliferation and migration evaluated by CCK8, transwell and clonal formation assays. The effect of TRIM8 on ovarian cancer cells in vivo was assessed by subcutaneous tumor formation experiments in nude mice. The potential interacting protein VDAC2 was identified by mass spectrometry. The mechanism underlying TRIM8 regulation of VDAC2 was evaluated by co-immunoprecipitation and western blotting. RESULTS TRIM8 was overexpressed in ovarian cancer. TRIM8 promoted the proliferation and migration of ovarian cancer cells in vitro and the growth of subcutaneous tumors in mice in vivo. TRIM8 interacted with VDAC2, weakened the stability of the protein, and promoted its polyubiquitination and subsequent degradation. Knockdown of VDAC2 increased the resistance of ovarian cancer cells to iron death, whereas overexpression of VDAC2 attenuated ovarian cancer progression induced by TRIM8 overexpression. DISCUSSION TRIM8 promotes ovarian cancer proliferation and migration by targeting VDAC2 for ubiquitination and degradation, these finding may provide new targets for the treatment of ovarian cancer. CONCLUSION TRIM8 degraded VDAC2 through the ubiquitination pathway, increased the resistance of ovarian cancer cells to iron death, and promoted the proliferation and migration of ovarian cancer.
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Affiliation(s)
- Fei Wu
- Department of Obstetrics and GynecologyThe Affiliated Suzhou Hospital of Nanjing Medical University, Gusu School, Nanjing Medical University, Suzhou Municipal HospitalSuzhouJiangsuChina
| | - Jiaqi Xu
- Department of Obstetrics and GynecologyThe Affiliated Suzhou Hospital of Nanjing Medical University, Gusu School, Nanjing Medical University, Suzhou Municipal HospitalSuzhouJiangsuChina
| | - Xin Jin
- Department of Obstetrics and GynecologyThe Affiliated Suzhou Hospital of Nanjing Medical University, Gusu School, Nanjing Medical University, Suzhou Municipal HospitalSuzhouJiangsuChina
| | - Yue Zhu
- Department of Breast and Thyroid SurgeryThe Affiliated Suzhou Hospital of Nanjing Medical University, Gusu School, Nanjing Medical University, Suzhou Municipal HospitalSuzhouJiangsuChina
| | - Wenxin Gao
- Department of Histology and Embryology, School of Basic Medical SciencesNanjing Medical UniversityNanjingChina
| | - Meng Liu
- Department of Obstetrics and GynecologyThe Affiliated Suzhou Hospital of Nanjing Medical University, Gusu School, Nanjing Medical University, Suzhou Municipal HospitalSuzhouJiangsuChina
| | - Yan Zhang
- Department of Obstetrics and GynecologyThe Affiliated Suzhou Hospital of Nanjing Medical University, Gusu School, Nanjing Medical University, Suzhou Municipal HospitalSuzhouJiangsuChina
| | - Weifeng Qian
- Department of Breast and Thyroid SurgeryThe Affiliated Suzhou Hospital of Nanjing Medical University, Gusu School, Nanjing Medical University, Suzhou Municipal HospitalSuzhouJiangsuChina
| | - Xiaoyan Huang
- Department of Histology and Embryology, School of Basic Medical SciencesNanjing Medical UniversityNanjingChina
| | - Dan Zhao
- Reproductive Medicine CenterThe Fourth Affiliated Hospital of Jiangsu UniversityZhenjiangChina
- Institute of Reproductive Sciences, Jiangsu UniversityZhenjiangChina
| | - Guannan Feng
- Department of Obstetrics and GynecologyThe Affiliated Suzhou Hospital of Nanjing Medical University, Gusu School, Nanjing Medical University, Suzhou Municipal HospitalSuzhouJiangsuChina
| | - Shunyu Hou
- Department of Obstetrics and GynecologyThe Affiliated Suzhou Hospital of Nanjing Medical University, Gusu School, Nanjing Medical University, Suzhou Municipal HospitalSuzhouJiangsuChina
| | - Xiaoxue Xi
- Department of Obstetrics and GynecologyThe Affiliated Suzhou Hospital of Nanjing Medical University, Gusu School, Nanjing Medical University, Suzhou Municipal HospitalSuzhouJiangsuChina
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Xu J, Wu F, Zhu Y, Wu T, Cao T, Gao W, Liu M, Qian W, Feng G, Xi X, Hou S. ANGPTL4 regulates ovarian cancer progression by activating the ERK1/2 pathway. Cancer Cell Int 2024; 24:54. [PMID: 38311733 PMCID: PMC10838463 DOI: 10.1186/s12935-024-03246-z] [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: 06/08/2023] [Accepted: 01/25/2024] [Indexed: 02/06/2024] Open
Abstract
BACKGROUND Ovarian cancer (OC) has the highest mortality rate among all gynecological malignancies. A hypoxic microenvironment is a common feature of solid tumors, including ovarian cancer, and an important driving factor of tumor cell survival and chemo- and radiotherapy resistance. Previous research identified the hypoxia-associated gene angiopoietin-like 4 (ANGPTL4) as both a pro-angiogenic and pro-metastatic factor in tumors. Hence, this work aimed to further elucidate the contribution of ANGPTL4 to OC progression. METHODS The expression of hypoxia-associated ANGPTL4 in human ovarian cancer was examined by bioinformatics analysis of TCGA and GEO datasets. The CIBERSORT tool was used to analyze the distribution of tumor-infiltrating immune cells in ovarian cancer cases in TCGA. The effect of ANGPTL4 silencing and overexpression on the proliferation and migration of OVCAR3 and A2780 OC cells was studied in vitro, using CCK-8, colony formation, and Transwell assays, and in vivo, through subcutaneous tumorigenesis assays in nude mice. GO enrichment analysis and WGCNA were performed to explore biological processes and genetic networks associated with ANGPTL4. The results obtained were corroborated in OC cells in vitro by western blotting. RESULTS Screening of hypoxia-associated genes in OC-related TCGA and GEO datasets revealed a significant negative association between ANGPTL4 expression and patient survival. Based on CIBERSORT analysis, differential representation of 14 distinct tumor-infiltrating immune cell types was detected between low- and high-risk patient groups. Silencing of ANGPTL4 inhibited OVCAR3 and A2780 cell proliferation and migration in vitro and reduced the growth rate of xenografted OVCAR3 cells in vivo. Based on results from WGCNA and previous studies, western blot assays in cultured OC cells demonstrated that ANGPTL4 activates the Extracellular signal-related kinases 1 and 2 (ERK1/2) pathway and this results in upregulation of c-Myc, Cyclin D1, and MMP2 expression. Suggesting that the above mechanism mediates the pro-oncogenic actions of ANGPTL4T in OC, the pro-survival effects of ANGPTL4 were largely abolished upon inhibition of ERK1/2 signaling with PD98059. CONCLUSIONS Our work suggests that the hypoxia-associated gene ANGPTL4 stimulates OC progression through activation of the ERK1/2 pathway. These findings may offer a new prospect for targeted therapies for the treatment of OC.
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Affiliation(s)
- Jiaqi Xu
- Department of Obstetrics and Gynecology, The Affiliated Suzhou Hospital of Nanjing Medical University, Gusu School, Nanjing Medical University; Suzhou Municipal Hospital, No.26, Daoqian Street, Suzhou, 215002, Jiangsu, China
| | - Fei Wu
- Department of Obstetrics and Gynecology, The Affiliated Suzhou Hospital of Nanjing Medical University, Gusu School, Nanjing Medical University; Suzhou Municipal Hospital, No.26, Daoqian Street, Suzhou, 215002, Jiangsu, China
| | - Yue Zhu
- Department of Breast and Thyroid Surgery, The Affiliated Suzhou Hospital of Nanjing Medical University, Gusu School, Nanjing Medical University; Suzhou Municipal Hospital, No.26, Daoqian Street, Suzhou, 215002, Jiangsu, China
| | - Tiantian Wu
- State Key Laboratory of Reproductive Medicine and Offspring Health, Department of Histology and Embryology, Nanjing Medical University, Nanjing, China
| | - Tianyue Cao
- Department of Obstetrics and Gynecology, The Affiliated Suzhou Hospital of Nanjing Medical University, Gusu School, Nanjing Medical University; Suzhou Municipal Hospital, No.26, Daoqian Street, Suzhou, 215002, Jiangsu, China
| | - Wenxin Gao
- State Key Laboratory of Reproductive Medicine and Offspring Health, Department of Histology and Embryology, Nanjing Medical University, Nanjing, China
| | - Meng Liu
- Department of Obstetrics and Gynecology, The Affiliated Suzhou Hospital of Nanjing Medical University, Gusu School, Nanjing Medical University; Suzhou Municipal Hospital, No.26, Daoqian Street, Suzhou, 215002, Jiangsu, China
| | - Weifeng Qian
- Department of Breast and Thyroid Surgery, The Affiliated Suzhou Hospital of Nanjing Medical University, Gusu School, Nanjing Medical University; Suzhou Municipal Hospital, No.26, Daoqian Street, Suzhou, 215002, Jiangsu, China
| | - Guannan Feng
- Department of Obstetrics and Gynecology, The Affiliated Suzhou Hospital of Nanjing Medical University, Gusu School, Nanjing Medical University; Suzhou Municipal Hospital, No.26, Daoqian Street, Suzhou, 215002, Jiangsu, China
| | - Xiaoxue Xi
- Department of Obstetrics and Gynecology, The Affiliated Suzhou Hospital of Nanjing Medical University, Gusu School, Nanjing Medical University; Suzhou Municipal Hospital, No.26, Daoqian Street, Suzhou, 215002, Jiangsu, China.
| | - Shunyu Hou
- Department of Obstetrics and Gynecology, The Affiliated Suzhou Hospital of Nanjing Medical University, Gusu School, Nanjing Medical University; Suzhou Municipal Hospital, No.26, Daoqian Street, Suzhou, 215002, Jiangsu, China.
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Chen-Xi G, Jin-Fu X, An-Quan H, Xiao Y, Ying-Hui W, Suo-Yuan L, Cong S, Tian-Ming Z, Jun S. Long non-coding RNA PRR7-AS1 promotes osteosarcoma progression via binding RNF2 to transcriptionally suppress MTUS1. Front Oncol 2023; 13:1227789. [PMID: 38033505 PMCID: PMC10687407 DOI: 10.3389/fonc.2023.1227789] [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: 05/23/2023] [Accepted: 10/31/2023] [Indexed: 12/02/2023] Open
Abstract
Introduction Osteosarcoma is a common bone malignant tumor in adolescents with high mortality and poor prognosis. At present, the progress of osteosarcoma and effective treatment strategies are not clear. This study provides a new potential target for the progression and treatment of osteosarcoma. Methods The relationship between lncRNA PRR7-AS1 and osteosarcoma was analyzed using the osteosarcoma databases and clinical sample testing. Cell function assays and tumor lung metastasis were employed to study the effects of PRR7-AS1 on tumorigenesis in vivo and in vitro. Potential downstream RNF2 of PRR7-AS1 was identified and explored using RNA pulldown and RIP. The GTRD and KnockTF database were used to predict the downstream target gene, MTUS1, and ChIP-qPCR experiments were used to verify the working mechanismy. Rescue experiments were utilized to confirm the role of MTUS1 in the pathway. Results Deep mining of osteosarcoma databases combined with clinical sample testing revealed a positive correlation between lncRNA PRR7-AS1 and osteosarcoma progression. Knockdown of PRR7-AS1 inhibited osteosarcoma cell proliferation and metastasis in vitro and in vivo. Mechanistically, RNA pulldown and RIP revealed that PRR7-AS1 may bind RNF2 to play a cancer-promoting role. ChIP-qPCR experiments were utilized to validate the working mechanism of the downstream target gene MTUS1. RNF2 inhibited the transcription of MTUS1 through histone H2A lysine 119 monoubiquitin. Rescue experiments confirmed MTUS1 as a downstream direct target of PRR7-AS1 and RNF2. Discussion We identified lncRNA PRR7-AS1 as an important oncogene in osteosarcoma progression, indicating that it may be a potential target for diagnosis and prognosis of osteosarcoma.
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Affiliation(s)
- Gu Chen-Xi
- Department of Orthopedic Surgery, The Affiliated Suzhou Hospital of Nanjing Medical University, Suzhou Municipal Hospital, Gusu School, Nanjing Medical University, Suzhou, China
| | - Xu Jin-Fu
- State Key Laboratory of Reproductive Medicine, Department of Histology and Embryology, Nanjing Medical University, Nanjing, China
| | - Huang An-Quan
- Department of Orthopedic Surgery, The Affiliated Suzhou Hospital of Nanjing Medical University, Suzhou Municipal Hospital, Gusu School, Nanjing Medical University, Suzhou, China
| | - Yu Xiao
- Department of Orthopedic Surgery, The Affiliated Suzhou Hospital of Nanjing Medical University, Suzhou Municipal Hospital, Gusu School, Nanjing Medical University, Suzhou, China
| | - Wu Ying-Hui
- Department of Orthopedic Surgery, The Affiliated Suzhou Hospital of Nanjing Medical University, Suzhou Municipal Hospital, Gusu School, Nanjing Medical University, Suzhou, China
| | - Li Suo-Yuan
- Department of Orthopedic Surgery, The Affiliated Suzhou Hospital of Nanjing Medical University, Suzhou Municipal Hospital, Gusu School, Nanjing Medical University, Suzhou, China
| | - Shen Cong
- State Key Laboratory of Reproductive Medicine, Center for Reproduction and Genetics, The Affiliated Suzhou Hospital of Nanjing Medical University, Suzhou Municipal Hospital, Gusu School, Nanjing Medical University, Suzhou, China
| | - Zou Tian-Ming
- Department of Orthopedic Surgery, The Affiliated Suzhou Hospital of Nanjing Medical University, Suzhou Municipal Hospital, Gusu School, Nanjing Medical University, Suzhou, China
| | - Shen Jun
- Department of Orthopedic Surgery, The Affiliated Suzhou Hospital of Nanjing Medical University, Suzhou Municipal Hospital, Gusu School, Nanjing Medical University, Suzhou, China
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Wu L, Li S, Xu J, Shen C, Qian Q. AGAP2-AS1/BRD7/c-Myc signaling axis promotes skin cutaneous melanoma progression. Am J Transl Res 2023; 15:350-362. [PMID: 36777828 PMCID: PMC9908487] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2022] [Accepted: 12/19/2022] [Indexed: 02/14/2023]
Abstract
OBJECTIVE To examine the effects and mechanisms of AGAP2 Antisense RNA 1 (AGAP2-AS1) in progression of skin cutaneous melanoma (SKCM). METHODS AGAP2-AS1 expression and SKCM survival outcomes were assessed using bioinformatics analysis. In vitro and in vivo assays, including cell proliferation, colony formation, migration, and tumor formation assays, were performed to detect AGAP2-AS1 oncogenic effects in SKCM. RNA pull-down, RNA immunoprecipitation (RIP), and co-immunoprecipitation were used to evaluate the mechanism of AGAP2-AS1 in SKCM progression. RESULTS AGAP2-AS1 was upregulated in human SKCM tissues and cells and predicted a worse prognosis. AGAP2-AS1 silencing in two SKCM cell lines inhibited cell proliferation, as well as colony formation and migration both in vitro and in vivo. The RNA pull-down assay and RIP analysis results indicated that AGAP2-AS1 interacted with bromodomain containing 7 (BRD7). AGAP2-AS1 knockdown attenuated the BRD7 and c-Myc interaction, which reduced c-Myc expression. The altered phenotypes found in AGAP2-AS1- and BRD7-deficient cells were rescued by overexpression of c-Myc. CONCLUSIONS AGAP2-AS1 participated in oncogenesis in SKCM via the BRD7/c-Myc signaling pathway. These results suggest a molecular mechanism for AGAP2-AS1 in the carcinogenesis of SKCM.
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Affiliation(s)
- Lei Wu
- Department of Dermatology, First Affiliated Hospital of Soochow UniversitySuzhou 215006, Jiangsu, China
| | - Shenyi Li
- Department of Obstetrics and Gynecology, Affiliated Hospital of Jiangnan UniversityWuxi 214062, Jiangsu, China
| | - Jinfu Xu
- State Key Laboratory of Reproductive Medicine, Department of Histology and Embryology, Nanjing Medical UniversityNanjing 211166, Jiangsu, China
| | - Cong Shen
- State Key Laboratory of Reproductive Medicine, Department of Histology and Embryology, Nanjing Medical UniversityNanjing 211166, Jiangsu, China,State Key Laboratory of Reproductive Medicine, Center for Reproduction and Genetics, Suzhou Municipal Hospital, The Affiliated Suzhou Hospital of Nanjing Medical University, Gusu School, Nanjing Medical UniversitySuzhou 215002, Jiangsu, China
| | - Qihong Qian
- Department of Dermatology, First Affiliated Hospital of Soochow UniversitySuzhou 215006, Jiangsu, China
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Seasonal Change in Adiponectin Associated with Ovarian Morphology and Function in Wild Ground Squirrels ( Citellus dauricus Brandt). Int J Mol Sci 2022; 23:ijms232314698. [PMID: 36499026 PMCID: PMC9741246 DOI: 10.3390/ijms232314698] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2022] [Revised: 11/18/2022] [Accepted: 11/22/2022] [Indexed: 11/27/2022] Open
Abstract
The goal of this study is to explore the relationship between altered circulating adiponectin concentration, ovarian tissue morphology, ovarian steroidogenesis, and sex hormone production in ovaries of wild ground squirrels. The ovarian mass differed significantly during the breeding and non-breeding seasons, and the circulating estradiol and progesterone concentrations were significantly higher in the breeding season, while the circulating adiponectin level was significantly lower. The expression levels of gonadotropin receptors (FSHR and LHR) and steroidogenic enzymes (StAR, P450scc, P450arom, and 3β-HSD) were significantly higher during the breeding season. Comparing the ovarian transcriptome data of wild ground squirrels between the two periods, we found that some differentially expressed genes were enriched for ovarian steroidogenesis and the adipocytokine signaling pathway, which correlated with our present results. Notably, the MAPK signaling pathway was also enriched and its related genes (Erk1, p38 Mapk, Jnk) were up-regulated by qPCR during the non-breeding season. These findings suggested that adiponectin may be involved in the regulation of seasonal changes in the ovarian function of wild ground squirrels, possibly by acting on the MAPK signaling pathway to regulate sex steroidogenesis in the ovaries.
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Liu J, Jiang Y, Huang H, Xu J, Wu Y, Wang Q, Zhu Y, Zheng B, Shen C, Qian W, Shen J. BMI-1 promotes breast cancer proliferation and metastasis through different mechanisms in different subtypes. Cancer Sci 2022; 114:449-462. [PMID: 36285479 PMCID: PMC9899611 DOI: 10.1111/cas.15623] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2022] [Revised: 09/18/2022] [Accepted: 10/06/2022] [Indexed: 02/07/2023] Open
Abstract
Breast cancer is among the most common malignant cancers in women. B-cell-specific Moloney murine leukemia virus integration site 1 (BMI-1) is a transcriptional repressor that has been shown to be involved in tumorigenesis, the cell cycle, and stem cell maintenance. In our study, increased expression of BMI-1 was found in both human triple negative breast cancer and luminal A-type breast cancer tissues compared with adjacent tissues. We also found that knockdown of BMI-1 significantly suppressed cell proliferation and migration in vitro and in vivo. Further mechanistic research demonstrated that BMI-1 directly bound to the promoter region of CDKN2D/BRCA1 and inhibited its transcription in MCF-7/MDA-MB-231. More importantly, we discovered that knockdown of CDKN2D/BRCA1 could promote cell proliferation and migration after repression by PTC-209. Our results reveal that BMI-1 transcriptionally suppressed BRCA1 in TNBC cell lines whereas, in luminal A cell lines, CDKN2D was the target gene. This provides a reference for the precise treatment of different types of breast cancer in clinical practice.
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Affiliation(s)
- Jin‐yan Liu
- Department of Breast and Thyroid SurgeryThe Affiliated Suzhou Hospital of Nanjing Medical University, Gusu School, Nanjing Medical UniversitySuzhouChina
| | - Yan‐nan Jiang
- Department of Breast and Thyroid SurgeryThe Affiliated Suzhou Hospital of Nanjing Medical University, Gusu School, Nanjing Medical UniversitySuzhouChina
| | - Hai Huang
- Department of Breast and Thyroid SurgeryThe Affiliated Suzhou Hospital of Nanjing Medical University, Gusu School, Nanjing Medical UniversitySuzhouChina
| | - Jin‐fu Xu
- State Key Laboratory of Reproductive Medicine, Department of Histology and EmbryologyNanjing Medical UniversityNanjingChina
| | - Ying‐hui Wu
- Department of Orthopaedic SurgeryThe Affiliated Suzhou Hospital of Nanjing Medical University, Gusu School, Nanjing Medical University, Suzhou Municipal HospitalSuzhouChina
| | - Qiang Wang
- Department of Orthopaedic SurgeryThe Affiliated Suzhou Hospital of Nanjing Medical University, Gusu School, Nanjing Medical University, Suzhou Municipal HospitalSuzhouChina
| | - Yue Zhu
- Department of Breast and Thyroid SurgeryThe Affiliated Suzhou Hospital of Nanjing Medical University, Gusu School, Nanjing Medical UniversitySuzhouChina
| | - Bo Zheng
- State Key Laboratory of Reproductive Medicine, Center for Reproduction and GeneticsThe Affiliated Suzhou Hospital of Nanjing Medical University, Gusu School, Nanjing Medical UniversitySuzhouChina
| | - Cong Shen
- State Key Laboratory of Reproductive Medicine, Center for Reproduction and GeneticsThe Affiliated Suzhou Hospital of Nanjing Medical University, Gusu School, Nanjing Medical UniversitySuzhouChina
| | - Wei‐feng Qian
- Department of Breast and Thyroid SurgeryThe Affiliated Suzhou Hospital of Nanjing Medical University, Gusu School, Nanjing Medical UniversitySuzhouChina
| | - Jun Shen
- Department of Orthopaedic SurgeryThe Affiliated Suzhou Hospital of Nanjing Medical University, Gusu School, Nanjing Medical University, Suzhou Municipal HospitalSuzhouChina
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Xue J, Wu T, Huang C, Shu M, Shen C, Zheng B, Lv J. Identification of proline-rich protein 11 as a major regulator in mouse spermatogonia maintenance via an increase in BMI1 protein stability. Mol Biol Rep 2022; 49:9555-9564. [PMID: 35980531 DOI: 10.1007/s11033-022-07846-8] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2022] [Accepted: 08/05/2022] [Indexed: 12/08/2022]
Abstract
BACKGROUND Spermatogenesis accompanied by self-renewal and differentiation of spermatogonia under complicated regulation is crucial for male fertility. Our previous study demonstrated that the loss of the B-lymphoma Mo-MLV insertion region 1 (BMI1) could cause male infertility and found a potential interaction between BMI1 and proline-rich protein 11 (PRR11); however, the specific co-regulatory effects of BMI1/PRR11 on spermatogonia maintenance remain unclear. METHODS AND RESULTS The expression of PRR11 was downregulated in a mouse spermatogonia cell line (GC-1) via transfection with PRR11-siRNAs, and PRR11 knockdown was verified by real-time reverse transcriptase polymerase chain reaction (RT-qPCR). The proliferative activity of GC-1 cells was determined using the cell counting kit (CCK-8), colony formation, and 5-ethynyl-2-deoxyuridine (EdU) incorporation assay. A Transwell assay was performed to evaluate the effects of PRR11 on GC-1 cell migration. A terminal deoxynucleotidyl transferase dUTP nick end labeling assay was used to measure GC-1 cell apoptosis. Furthermore, co-immunoprecipitation, RT-qPCR, and western blot analyses were used for investigating the regulatory mechanisms involved in this regulation. It was found that downregulation of PRR11 could cause a marked inhibition of proliferation and migration and induced apoptosis in GC-1 cells. Moreover, silencing of PRR11 obviously led to a reduction in the BMI1 protein level. PRR11 was found to interact with BMII at the endogenous protein level. PRR11 knockdown produced a decrease in BMI1 protein stability via an increase in BMI1 ubiquitination after which derepression in the transcription of protein tyrosine phosphatase receptor type M (Ptprm) occurred. Importantly, knockdown of Ptprm in PRR11-deficient GC-1 cells led to a reversal of proliferation and migration of GC-1 cells. CONCLUSIONS This study uncovered a novel mechanism by which PRR11 cooperated with BMI1 to facilitate GC-1 maintenance through targeting Ptprm. Our findings may provide a better understanding of the regulatory network in spermatogonia maintenance.
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Affiliation(s)
- Jiajia Xue
- Suzhou Dushu Lake Hospital (Dushu Lake Hospital Affiliated to Soochow University), Suzhou, 215124, China
| | - Tiantian Wu
- State Key Laboratory of Reproductive Medicine, Center for Reproduction and Genetics, Suzhou Municipal Hospital, The Affiliated Suzhou Hospital of Nanjing Medical University, Gusu School, Nanjing Medical University, Suzhou, 215002, China
- State Key Laboratory of Reproductive Medicine, Department of Histology and Embryology, Nanjing Medical University, Nanjing, 211166, China
| | - Chao Huang
- State Key Laboratory of Reproductive Medicine, Center for Reproduction and Genetics, Suzhou Municipal Hospital, The Affiliated Suzhou Hospital of Nanjing Medical University, Gusu School, Nanjing Medical University, Suzhou, 215002, China
| | - Minghua Shu
- Suzhou Dushu Lake Hospital (Dushu Lake Hospital Affiliated to Soochow University), Suzhou, 215124, China
| | - Cong Shen
- State Key Laboratory of Reproductive Medicine, Center for Reproduction and Genetics, Suzhou Municipal Hospital, The Affiliated Suzhou Hospital of Nanjing Medical University, Gusu School, Nanjing Medical University, Suzhou, 215002, China
| | - Bo Zheng
- State Key Laboratory of Reproductive Medicine, Center for Reproduction and Genetics, Suzhou Municipal Hospital, The Affiliated Suzhou Hospital of Nanjing Medical University, Gusu School, Nanjing Medical University, Suzhou, 215002, China.
| | - Jinxing Lv
- Suzhou Dushu Lake Hospital (Dushu Lake Hospital Affiliated to Soochow University), Suzhou, 215124, China.
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Li S, Lu Y, Xu Y, Zhang C, Liu B, Qin A, Qiao Z, Shen C, Shen J, Liang Y, Wu J, Jiang X. Brachyury promotes proliferation and migration of hepatocellular carcinoma via facilitating the transcription of NCAPG2. Am J Cancer Res 2022; 12:3625-3643. [PMID: 36119840 PMCID: PMC9442014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2022] [Accepted: 07/13/2022] [Indexed: 06/15/2023] Open
Abstract
Hepatocellular carcinoma (HCC) has a poor prognosis because of its limited drug responses in clinical trials. Therefore, it is crucial to clarify the molecular mechanisms of HCC progression to identify new diagnostic markers and therapeutic targets. Here, we report that brachyury, which regulates the gene encoding the non-SMC condensin II complex subunit G2 (NCAPG2), promotes tumorigenesis in HCC. Knockdown of brachyury led to inhibition of cancer progression in vitro and in vivo. Chromatin immunoprecipitation-sequencing data indicated that the oncogene NCAPG2 is a direct target of brachyury. Furthermore, NCAPG2 knockdown inhibited the proliferation and migration of HCC cells and attenuated brachyury-induced tumorigenesis. Overexpression and decreased DNA methylation of NCAPG2 were associated with a poor prognosis, and NCAPG2 was positively correlated with various immune cell infiltrates, cancer-associated fibroblasts, and immune checkpoint molecule expression levels in the tumor microenvironment. Moreover, the effectiveness of immune checkpoint blockade was decreased in the high NCAPG2 expression group. Together, these findings demonstrated a coregulatory effect of the brachyury/NCAPG2 axis during HCC progression.
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Affiliation(s)
- Song Li
- Department of Hepatobiliary Surgery, Suzhou Municipal Hospital, The Affiliated Suzhou Hospital of Nanjing Medical University, Gusu School, Nanjing Medical UniversitySuzhou 215002, China
| | - Yijie Lu
- Department of Hepatobiliary Surgery, Suzhou Municipal Hospital, The Affiliated Suzhou Hospital of Nanjing Medical University, Gusu School, Nanjing Medical UniversitySuzhou 215002, China
| | - Yaopeng Xu
- Department of Hepatobiliary Surgery, Suzhou Municipal Hospital, The Affiliated Suzhou Hospital of Nanjing Medical University, Gusu School, Nanjing Medical UniversitySuzhou 215002, China
| | - Cong Zhang
- Department of Hepatobiliary Surgery, Suzhou Municipal Hospital, The Affiliated Suzhou Hospital of Nanjing Medical University, Gusu School, Nanjing Medical UniversitySuzhou 215002, China
| | - Biren Liu
- Department of Hepatobiliary Surgery, Suzhou Municipal Hospital, The Affiliated Suzhou Hospital of Nanjing Medical University, Gusu School, Nanjing Medical UniversitySuzhou 215002, China
| | - Ancheng Qin
- Department of Hepatobiliary Surgery, Suzhou Municipal Hospital, The Affiliated Suzhou Hospital of Nanjing Medical University, Gusu School, Nanjing Medical UniversitySuzhou 215002, China
| | - Zhiming Qiao
- Department of Hepatobiliary Surgery, Suzhou Municipal Hospital, The Affiliated Suzhou Hospital of Nanjing Medical University, Gusu School, Nanjing Medical UniversitySuzhou 215002, China
| | - Cong Shen
- State Key Laboratory of Reproductive Medicine, Nanjing Medical UniversityNanjing 211166, China
| | - Jun Shen
- Department of Orthopeadic Surgery, Suzhou Municipal Hospital, The Affiliated Suzhou Hospital of Nanjing Medical University, Gusu School, Nanjing Medical UniversitySuzhou 215002, China
| | - Yuting Liang
- Center for Clinical Laboratory, The First Affiliated Hospital of Soochow UniversitySuzhou 215006, China
| | - Jianwu Wu
- Department of Hepatobiliary Surgery, Suzhou Municipal Hospital, The Affiliated Suzhou Hospital of Nanjing Medical University, Gusu School, Nanjing Medical UniversitySuzhou 215002, China
| | - Xinwei Jiang
- Department of Hepatobiliary Surgery, Suzhou Municipal Hospital, The Affiliated Suzhou Hospital of Nanjing Medical University, Gusu School, Nanjing Medical UniversitySuzhou 215002, China
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Chen X, Zheng Y, Han Y, He H, Lv J, Yu J, Li H, Hou S, Shen C, Zheng B. SAT2 regulates Sertoli cell-germline interactions via STIM1-mediated ROS/WNT/β-catenin signaling pathway. Cell Biol Int 2022; 46:1704-1713. [PMID: 35819096 DOI: 10.1002/cbin.11857] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2022] [Revised: 06/15/2022] [Accepted: 06/30/2022] [Indexed: 01/01/2023]
Abstract
As the main component of seminiferous tubules, Sertoli cells are in close contact with germ cells and generate niche signals, which exhibit pivotal functions in spermatogenesis and male fertility. However, the regulatory mechanisms of Sertoli cell-germline interactions (SGIs) in the testes of neonatal mice (NM) remain largely unclear. Previously, we identified spermidine/spermine N1-acetyl transferase 2 (SAT2) and stromal interaction molecule 1 (STIM1) to be potential regulators of testicular cord formation via comparative proteomics analysis. Here, we demonstrated a novel role of SAT2 for SGIs during testicular development in NM. Testicular explants lacking SAT2 affected the mislocation, but not the quantity, of Sertoli cells, which led to maintenance defects in spermatogonial stem cells (SSCs). Interestingly, SAT2 was essential for the migration of TM4 cells, a Sertoli cell line. Mechanistically, SAT2 was able to bind STIM1, repress its expression, and regulate homeostasis of a reactive oxygen species/wingless type (WNT)/β-catenin pathway in NM testes. Collectively, our study identified that SAT2 was able to regulate SGIs via a STIM1-mediated WNT signaling pathway.
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Affiliation(s)
- Xia Chen
- Department of Obstetrics and Gynecology, Affiliated Hospital 2 of Nantong University and First People's Hospital of Nantong City, Nantong, Jiangsu, China
| | - Yanli Zheng
- Department of Obstetrics and Gynecology, Affiliated Hospital 2 of Nantong University and First People's Hospital of Nantong City, Nantong, Jiangsu, China
| | - Yun Han
- Department of Obstetrics and Gynecology, Affiliated Hospital 2 of Nantong University and First People's Hospital of Nantong City, Nantong, Jiangsu, China
| | - Hui He
- Department of Human Anatomy, School of Medicine, Nantong University, Nantong, China
| | - Jinxing Lv
- Suzhou Dushu Lake Hospital (Dushu Lake Hospital Affiliated to Soochow University), Suzhou, China
| | - Jun Yu
- Institute of Reproductive Medicine, School of Medicine, Nantong University, Nantong, China
| | - Hong Li
- State Key Laboratory of Reproductive Medicine, Center for Reproduction and Genetics, Suzhou Municipal Hospital, The Affiliated Suzhou Hospital of Nanjing Medical University, Gusu School, Nanjing Medical University, Suzhou, China
| | - Shunyu Hou
- Department of Gynaecology, Suzhou Municipal Hospital, The Affiliated Suzhou Hospital of Nanjing Medical University, Gusu School, Nanjing Medical University, Suzhou, China
| | - Cong Shen
- State Key Laboratory of Reproductive Medicine, Center for Reproduction and Genetics, Suzhou Municipal Hospital, The Affiliated Suzhou Hospital of Nanjing Medical University, Gusu School, Nanjing Medical University, Suzhou, China
| | - Bo Zheng
- State Key Laboratory of Reproductive Medicine, Center for Reproduction and Genetics, Suzhou Municipal Hospital, The Affiliated Suzhou Hospital of Nanjing Medical University, Gusu School, Nanjing Medical University, Suzhou, China
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10
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Syntaxin binding protein 2 in sertoli cells regulates spermatogonial stem cell maintenance through directly interacting with connexin 43 in the testes of neonatal mice. Mol Biol Rep 2022; 49:7557-7566. [DOI: 10.1007/s11033-022-07564-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2022] [Accepted: 05/04/2022] [Indexed: 11/26/2022]
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11
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Zheng B, Liu J, Shi X, Xu J, Zhang K, Zhou H, Wu T, Huang X, Shen C, Liang Y, Zhao D, Guo Y. BMI1 governs the maintenance of mouse GC-2 cells through epigenetic repression of Foxl1 transcription. Am J Transl Res 2022; 14:3407-3418. [PMID: 35702123 PMCID: PMC9185053] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2022] [Accepted: 04/30/2022] [Indexed: 06/15/2023]
Abstract
OBJECTIVES Studies have demonstrated that B lymphoma Mo-MLV insertion region 1 (BMI1) plays an important role in male reproductive function and the regulation of spermatogonia proliferation. However, whether BMI1 exerts a similarly important function in spermatocyte development remains unclear. METHODS In this study, we investigated the role of BMI1 in spermatocyte development using a mouse spermatocyte-derived cell line (GC-2) and a Bmi1-knockout (KO) mouse model. RESULTS We demonstrated that BMI1 promoted the proliferation and inhibited the apoptosis of GC-2 cells. Mechanistically, we presented in vitro and in vivo evidence showing that BMI1 binds to the promoter region of the forkhead box L1 (Foxl1) gene, sequentially driving chromatin remodeling and gene silencing. BMI1, which functions as a classical polycomb protein, was found to direct the transcriptional repression of Foxl1 through increasing the H2AK119ub level and reducing that of H3K4me3 in the promoter region of Foxl1. Our results further indicated that the knockdown of Foxl1 expression significantly enhanced cell proliferation via activating β-catenin signaling in BMI1-deficient GC-2 cells. CONCLUSIONS Collectively, our study revealed for the first time the existence of an epigenetic mechanism involving BMI1-mediated gene silencing in GC-2 cells development and provided potential targets for the treatment of male infertility.
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Affiliation(s)
- Bo Zheng
- State Key Laboratory of Reproductive Medicine, Center for Reproduction and Genetics, Suzhou Municipal Hospital, The Affiliated Suzhou Hospital of Nanjing Medical University, Gusu School, Nanjing Medical UniversitySuzhou 215002, Jiangsu, China
| | - Juanjuan Liu
- Reproductive Medicine Center, The Second Affiliated Hospital of Soochow UniversitySuzhou 215004, Jiangsu, China
| | - Xiaodan Shi
- Department of Reproduction, The Affiliated Obstetrics and Gynecology Hospital with Nanjing Medical University, Nanjing Maternity and Child Health Care HospitalNanjing 210004, Jiangsu, China
| | - Jinfu Xu
- State Key Laboratory of Reproductive Medicine, Department of Histology and Embryology, Nanjing Medical UniversityNanjing 211166, Jiangsu, China
| | - Ke Zhang
- Department of Urology, The Second Affiliated Hospital of Soochow UniversitySuzhou 215004, Jiangsu, China
| | - Hui Zhou
- Human Reproductive and Genetic Center, Affiliated Hospital of Jiangnan UniversityWuxi 214122, Jiangsu, China
| | - Tiantian Wu
- State Key Laboratory of Reproductive Medicine, Department of Histology and Embryology, Nanjing Medical UniversityNanjing 211166, Jiangsu, China
| | - Xiaoyan Huang
- State Key Laboratory of Reproductive Medicine, Department of Histology and Embryology, Nanjing Medical UniversityNanjing 211166, Jiangsu, China
| | - Cong Shen
- State Key Laboratory of Reproductive Medicine, Center for Reproduction and Genetics, Suzhou Municipal Hospital, The Affiliated Suzhou Hospital of Nanjing Medical University, Gusu School, Nanjing Medical UniversitySuzhou 215002, Jiangsu, China
| | - Yuting Liang
- Center for Clinical Laboratory, The First Affiliated Hospital of Soochow UniversitySuzhou 215006, Jiangsu, China
| | - Dan Zhao
- Fourth Affiliated Hospital of Jiangsu UniversityZhenjiang 212008, Jiangsu, China
| | - Yueshuai Guo
- State Key Laboratory of Reproductive Medicine, Department of Histology and Embryology, Nanjing Medical UniversityNanjing 211166, Jiangsu, China
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12
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Xu W, Wang J, Xu J, Li S, Zhang R, Shen C, Xie M, Zheng B, Gu M. Long non-coding RNA DEPDC1-AS1 promotes proliferation and migration of human gastric cancer cells HGC-27 via the human antigen R-F11R pathway. J Int Med Res 2022; 50:3000605221093135. [PMID: 35466755 PMCID: PMC9044790 DOI: 10.1177/03000605221093135] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023] Open
Abstract
Objective Long non-coding (lnc) RNAs are critical regulators in carcinogenesis. The
novel lncRNA DEPDC1 antisense RNA 1 (DEPDC1-AS1) was
recently associated with poor prognosis in triple-negative breast cancer and
lung adenocarcinoma. However, its role in regulating the malignant
progression of gastric cancer (GC) and its molecular mechanism are unclear.
We herein explored the functions of DEPDC1-AS1 in GC
progression. Methods DEPDC1-AS1 expression and prognosis in GC tissues were
examined by bioinformatics analysis and quantitative reverse transcription
polymerase chain reaction. The DEPDC1-AS1 function in GC
cells was explored by the cell counting kit-8 assay, colony formation assay,
Transwell assay, terminal deoxynucleotidyl transferase-mediated dUTP
nick-end labeling, 5-ethynyl-2′-deoxyuridine-incorporation, and the
xenograft tumor model. The DEPDC1-AS1 and human antigen
(Hu)R interaction was determined by RNA pull-down and RNA
immunoprecipitation. Results DEPDC1-AS1 was overexpressed in GC tissues and cell lines,
and associated with a worse prognosis in GC patients. In
vitro and in vivo assays showed that
DEPDC1-AS1 promoted HGC-27 cell proliferation and
migration. Mechanistically, DEPDC1-AS1 served as a scaffold
by combining with HuR to target the specific mRNA F11R. Conclusion DEPDC1-AS1 plays a crucial role in GC development and
progression and is a potential biomarker for the early detection or
prognosis of GC.
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Affiliation(s)
- Wei Xu
- Department of Gastrointestinal Surgery, Suzhou Municipal Hospital, The Affiliated Suzhou Hospital of Nanjing Medical University, Gusu School, Nanjing Medical University, Suzhou 215002, China
| | - Juan Wang
- Department of Obstetrics and Gynecology, Human Reproductive and Genetic Center, Affiliated Hospital of Jiangnan University, Wuxi 214062, China
| | - Jinfu Xu
- State Key Laboratory of Reproductive Medicine, Department of Histology and Embryology, Nanjing Medical University, Nanjing 211166, China
| | - Shenyi Li
- Department of Obstetrics and Gynecology, Human Reproductive and Genetic Center, Affiliated Hospital of Jiangnan University, Wuxi 214062, China
| | - Ranran Zhang
- Department of Obstetrics and Gynecology, Human Reproductive and Genetic Center, Affiliated Hospital of Jiangnan University, Wuxi 214062, China
| | - Cong Shen
- State Key Laboratory of Reproductive Medicine, Center for Reproduction and Genetics, Suzhou Municipal Hospital, The Affiliated Suzhou Hospital of Nanjing Medical University, Gusu School, Nanjing Medical University, Suzhou 215002, China
| | - Min Xie
- The Central Laboratory of Birth Defects Prevention and Control, Ningbo Women and Children's Hospital, Ningbo 315012, China
| | - Bo Zheng
- State Key Laboratory of Reproductive Medicine, Center for Reproduction and Genetics, Suzhou Municipal Hospital, The Affiliated Suzhou Hospital of Nanjing Medical University, Gusu School, Nanjing Medical University, Suzhou 215002, China
| | - Menghui Gu
- Department of Gastrointestinal Surgery, Suzhou Municipal Hospital, The Affiliated Suzhou Hospital of Nanjing Medical University, Gusu School, Nanjing Medical University, Suzhou 215002, China
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13
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Wang Q, Wu Y, Lin M, Wang G, Liu J, Xie M, Zheng B, Shen C, Shen J. BMI1 promotes osteosarcoma proliferation and metastasis by repressing the transcription of SIK1. Cancer Cell Int 2022; 22:136. [PMID: 35346195 PMCID: PMC8961961 DOI: 10.1186/s12935-022-02552-8] [Citation(s) in RCA: 17] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2021] [Accepted: 03/14/2022] [Indexed: 01/09/2023] Open
Abstract
Abstract
Background
Osteosarcoma (OS) is the most common malignant tumor of bone, and the clinical efficacy of current treatments and associated survival rates need to be further improved by employing novel therapeutic strategies. Although various studies have shown that BMI1 protein is universally upregulated in OS cells and tissues, its specific role and underlying mechanism have not yet been fully explored.
Methods
Expression of BMI1 protein in OS cells was detected by western blot. The effect of BMI1 on proliferation and migration of OS cells (143B and U-2OS cell lines) was investigated in vitro using CCK-8, colony formation and transwell assays, and in vivo using subcutaneous tumorigenesis and lung metastasis assays in xenograft nude mice. Expression of epithelial–mesenchymal transition (EMT)-associated proteins was detected by immunofluorescence imaging. Bioinformatic analysis was performed using ENCODE databases to predict downstream targets of BMI1. SIK1 mRNA expression in osteosarcoma cells was detected by quantitative real-time reverse transcription PCR (qPCR). Chromatin immunoprecipitation-qPCR (ChIP-qPCR) was used to investigate expression of BMI1-associated, RING1B-associated, H2AK119ub-associated and H3K4me3-associated DNA at the putative binding region of BMI1 on the SIK1 promoter in OS cells.
Results
Using both in vitro and in vivo experimental approaches, we found that BMI1 promotes OS cell proliferation and metastasis. The tumor suppressor SIK1 was identified as the direct target gene of BMI1 in OS cells. In vitro experiments demonstrated that SIK1 could inhibit proliferation and migration of OS cells. Inhibition of SIK1 largely rescued the altered phenotypes of BMI1-deficient OS cells. Mechanistically, we demonstrated that BMI1 directly binds to the promoter region of SIK1 in a complex with RING1B to promote monoubiquitination of histone H2A at lysine 119 (H2AK119ub) and inhibit H3K4 trimethylation (H3K4me3), resulting in inhibition of SIK1 transcription. We therefore suggest that BMI1 promotes OS cell proliferation and metastasis by inhibiting SIK1.
Conclusions
Our results reveal a novel molecular mechanism of OS development promoted by BMI1 and provides a new potential target for OS treatment.
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14
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The plasminogen receptor directs maintenance of spermatogonial stem cells by targeting BMI1. Mol Biol Rep 2022; 49:4469-4478. [DOI: 10.1007/s11033-022-07289-1] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2022] [Accepted: 02/18/2022] [Indexed: 12/29/2022]
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15
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LINC00624/TEX10/NF-κB axis promotes proliferation and migration of human prostate cancer cells. Biochem Biophys Res Commun 2022; 601:1-8. [PMID: 35219000 DOI: 10.1016/j.bbrc.2022.02.078] [Citation(s) in RCA: 15] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2022] [Revised: 02/16/2022] [Accepted: 02/19/2022] [Indexed: 01/01/2023]
Abstract
Prostate cancer (PCa) is a malignant epithelial tumor with a high rate of biochemical or local recurrence. Studies have suggested that LINC00624 plays an important oncogenic role in liver cancer. However, whether it exerts similar effects in PCa progression remains unknown. In this study, we explored the effects of LINC00624 on the malignant progression of PCa and sought to identify the relevant signaling pathways. The results showed that LINC00624 was highly expressed in PCa tissues and cells and was associated with poor prognosis in PCa patients. In vitro and in vivo assays further showed that LINC00624 knockdown could decrease the proliferative and migratory ability of PCa cells. Mechanistically, we found that LINC00624 and TEX10 formed a co-regulatory axis that stimulated NF-κB activity. Our data suggest that LINC00624 acts as an oncogene in PCa progression and has potential as a novel biomarker for PCa.
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16
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Shen C, Xu J, Zhou Q, Lin M, Lv J, Zhang X, Wu Y, Chen X, Yu J, Huang X, Zheng B. E3 ubiquitin ligase ASB17 is required for spermiation in mice. Transl Androl Urol 2022; 10:4320-4332. [PMID: 35070814 PMCID: PMC8749070 DOI: 10.21037/tau-21-789] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2021] [Accepted: 12/06/2021] [Indexed: 12/11/2022] Open
Abstract
Background A major goal of spermiation is to degrade the apical ectoplasmic specialization (ES) junction between Sertoli cells and elongating spermatids in preparation for the eventual disengagement of spermatids into the lumen. E3 ubiquitin ligases mediate the process of ubiquitination and the subsequent proteasomal degradation, but their specific role during spermiation remains largely unexplored. Methods Ankyrin repeat and SOCS box protein 17 (Asb17)-knockout mice were generated via a CRISPR/Cas9 approach. Epididymal sperm parameters were assessed by a computer-assisted sperm analysis (CASA) system, and morphological analysis of testicular tissues were performed based on histological and immunostaining staining, and transmission electron microscopy (TEM). The interactions between ASB17 and Espin (ESPN) were predicted by HawkDock server and validated through protein pull-down and immunoprecipitation assays. Results We report that ASB17, an E3 ligase, is required for the completion of spermiation and that mice lacking Asb17 are oligozoospermic owing to spermiation failure. ASB17-deficient mice are fertile; however, spermatids exhibit a disorganized ES junction, resulting in retention within the seminiferous epithelium. Mechanistically, ASB17 deficiency leads to excess accumulation of ESPN, an actin-binding essential structural component of the ES. We determined that ASB17 regulates the removal of the ES through ubiquitin mediated protein degradation of ESPN. Conclusions In summary, our study describes a role for ASB17 in the regulation of cell-cell junctions between germ cells and somatic cells in the testis. These findings establish a novel mechanism for the regulatory role of E3 ligases during spermatogenesis.
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Affiliation(s)
- Cong Shen
- State Key Laboratory of Reproductive Medicine, Center for Reproduction and Genetics, Suzhou Municipal Hospital, The Affiliated Suzhou Hospital of Nanjing Medical University, Gusu School, Nanjing Medical University, Suzhou, China
| | - Jinfu Xu
- State Key Laboratory of Reproductive Medicine, Department of Histology and Embryology, Nanjing Medical University, Nanjing, China
| | - Qiao Zhou
- Department of Reproduction, The affiliated Obstetrics and Gynecology Hospital with Nanjing Medical University; Nanjing Maternity and Child Health Care Hospital, Nanjing, China
| | - Meng Lin
- State Key Laboratory of Reproductive Medicine, Department of Histology and Embryology, Nanjing Medical University, Nanjing, China
| | - Jinxing Lv
- Suzhou Dushu Lake Hospital (Dushu Lake Hospital Affiliated to Soochow University), Suzhou, China
| | - Xi Zhang
- State Key Laboratory of Reproductive Medicine, Department of Histology and Embryology, Nanjing Medical University, Nanjing, China
| | - Yangyang Wu
- State Key Laboratory of Reproductive Medicine, Department of Histology and Embryology, Nanjing Medical University, Nanjing, China
| | - Xia Chen
- Department of Obstetrics and Gynecology, Affiliated Hospital 2 of Nantong University and First People's Hospital of Nantong City, Nantong, China
| | - Jun Yu
- Institute of Reproductive Medicine, School of Medicine, Nantong University, Nantong, China
| | - Xiaoyan Huang
- State Key Laboratory of Reproductive Medicine, Department of Histology and Embryology, Nanjing Medical University, Nanjing, China
| | - Bo Zheng
- State Key Laboratory of Reproductive Medicine, Center for Reproduction and Genetics, Suzhou Municipal Hospital, The Affiliated Suzhou Hospital of Nanjing Medical University, Gusu School, Nanjing Medical University, Suzhou, China
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17
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Liu Y, Yu X, Huang A, Zhang X, Wang Y, Geng W, Xu R, Li S, He H, Zheng B, Chen G, Xu Y. INTS7-ABCD3 Interaction Stimulates the Proliferation and Osteoblastic Differentiation of Mouse Bone Marrow Mesenchymal Stem Cells by Suppressing Oxidative Stress. Front Physiol 2021; 12:758607. [PMID: 34880777 PMCID: PMC8647813 DOI: 10.3389/fphys.2021.758607] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2021] [Accepted: 10/20/2021] [Indexed: 12/14/2022] Open
Abstract
Increased adipocyte and decreased osteoblast differentiation, combined with the ectopic proliferation of bone marrow mesenchymal stem cells (BM-MSCs), represent the primary causes of osteoporosis. The dysregulation of numerous intracellular bioactive factors is responsible for the aberrant differentiation and growth of BM-MSCs. In this study, we focused on a new stimulative factor, integrator complex subunit 7 (INTS7), and its cooperative protein ATP-binding cassette subfamily D member 3 (ABCD3)/high-density lipoprotein-binding protein (HDLBP) in mouse BM-MSCs. We aimed to uncover the effects of the INTS7–ABCD3/HDLBP interaction on BM-MSC biological behaviors and the potential mechanism underlying these effects. Functional in vitro experiments showed that the suppression of the INTS7–ABCD3 interaction rather than HDLBP could impair BM-MSC proliferation and induce cell apoptosis. Moreover, Alizarin Red S and Oil Red O staining, respectively, revealed that INTS7 and ABCD3 knockdown but not HDLBP knockdown could decrease osteoblastic differentiation and accelerate the adipogenic differentiation of BM-MSCs. Mechanistically, reactive oxygen species (ROS) and histone γ-H2AX quantities significantly increased, whereas the levels of antioxidants declined due to INTS7 and ABCD3 inhibition in BM-MSCs. These findings indicated that the suppression of oxidative stress could be involved in the INTS7/ABCD3 co-regulatory mechanisms for BM-MSC proliferation and differentiation, identifying new potential candidates for osteoporosis therapy.
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Affiliation(s)
- Yubo Liu
- Department of Orthopaedics, The First Affiliated Hospital of Soochow University, Suzhou, China.,Department of Orthopaedics, The Affiliated Suzhou Hospital of Nanjing Medical University, Suzhou, China
| | - Xiao Yu
- Department of Orthopaedics, The Affiliated Suzhou Hospital of Nanjing Medical University, Suzhou, China
| | - Anquan Huang
- Department of Orthopaedics, The Affiliated Suzhou Hospital of Nanjing Medical University, Suzhou, China
| | - Xiangxin Zhang
- Department of Orthopaedics, The Affiliated Suzhou Hospital of Nanjing Medical University, Suzhou, China
| | - Yijun Wang
- Department of Orthopaedics, The First Affiliated Hospital of Soochow University, Suzhou, China
| | - Wei Geng
- Department of Orthopaedics, The First Affiliated Hospital of Soochow University, Suzhou, China
| | - Renjie Xu
- Department of Orthopaedics, The Affiliated Suzhou Hospital of Nanjing Medical University, Suzhou, China
| | - Suoyuan Li
- Department of Orthopaedics, The Affiliated Suzhou Hospital of Nanjing Medical University, Suzhou, China
| | - Hui He
- Department of Orthopaedics, The Affiliated Suzhou Hospital of Nanjing Medical University, Suzhou, China
| | - Bo Zheng
- State Key Laboratory of Reproductive Medicine, Center for Reproduction and Genetics, Suzhou Municipal Hospital, The Affiliated Suzhou Hospital of Nanjing Medical University, Gusu School, Nanjing Medical University, Suzhou, China.,State Key Laboratory of Reproductive Medicine, Department of Histology and Embryology, Nanjing Medical University, Nanjing, China
| | - Guangxiang Chen
- Department of Orthopaedics, The Affiliated Suzhou Hospital of Nanjing Medical University, Suzhou, China
| | - Yaozeng Xu
- Department of Orthopaedics, The First Affiliated Hospital of Soochow University, Suzhou, China
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18
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Zhang K, Xu J, Ding Y, Shen C, Lin M, Dai X, Zhou H, Huang X, Xue B, Zheng B. BMI1 promotes spermatogonia proliferation through epigenetic repression of Ptprm. Biochem Biophys Res Commun 2021; 583:169-177. [PMID: 34739857 DOI: 10.1016/j.bbrc.2021.10.074] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2021] [Accepted: 10/29/2021] [Indexed: 12/31/2022]
Abstract
Spermatogonia are accountable for spermatogenesis and male fertility, but the underlying mechanisms involved in spermatogonia maintenance are not clear. B lymphoma Mo-MLV insertion region 1 (BMI1) is a key component of epigenetic silencers. BMI1 is essential for stem-cell maintenance. Here, we attempted to uncover the role of BMI1 in spermatogonia maintenance using a mouse spermatogonia cell line (GC-1) and Bmi1-knockout (KO) mouse model. We showed that BMI1 promoted the proliferation and inhibited apoptosis of GC-1 cells. Mechanistically, we present in vitro and in vivo evidence to show that BMI1 binds to the promoter region of the Protein tyrosine phosphatase receptor type M (PTPRM) gene, thereby driving chromatin remodeling and gene silencing. Knockdown of Ptprm expression significantly improved spermatogonia proliferation in BMI1-deficient GC-1 cells. Collectively, our data show, for the first time, an epigenetic mechanism involving in BMI1-mediated gene silencing in spermatogonia maintenance, and provide potential targets for the treatment of male infertility.
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Affiliation(s)
- Ke Zhang
- Department of Urology, The Second Affiliated Hospital of Soochow University, Suzhou, China
| | - Jinfu Xu
- State Key Laboratory of Reproductive Medicine, Department of Histology and Embryology, Nanjing Medical University, Nanjing, China
| | - Yue Ding
- State Key Laboratory of Reproductive Medicine, Department of Histology and Embryology, Nanjing Medical University, Nanjing, China
| | - Cong Shen
- State Key Laboratory of Reproductive Medicine, Center for Reproduction and Genetics, Suzhou Municipal Hospital, The Affiliated Suzhou Hospital of Nanjing Medical University, Gusu School, Nanjing Medical University, Suzhou, China
| | - Meng Lin
- State Key Laboratory of Reproductive Medicine, Department of Histology and Embryology, Nanjing Medical University, Nanjing, China
| | - Xiuliang Dai
- Center of Clinical Reproductive Medicine, The Affiliated Changzhou Matemity and Child Health Care Hospital of Nanjing Medical University, Changzhou, China
| | - Hui Zhou
- Human Reproductive and Genetic Center, Affiliated Hospital of Jiangnan University, Wuxi, China
| | - Xiaoyan Huang
- State Key Laboratory of Reproductive Medicine, Department of Histology and Embryology, Nanjing Medical University, Nanjing, China
| | - Boxin Xue
- Department of Urology, The Second Affiliated Hospital of Soochow University, Suzhou, China.
| | - Bo Zheng
- State Key Laboratory of Reproductive Medicine, Center for Reproduction and Genetics, Suzhou Municipal Hospital, The Affiliated Suzhou Hospital of Nanjing Medical University, Gusu School, Nanjing Medical University, Suzhou, China.
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