1
|
Xue H, Han L, Sun H, Piao Z, Cao W, Qian H, Zhao Z, Lang MF, Gu C. Metastasis-associated 1 localizes to the sarcomeric Z-disc and is implicated in skeletal muscle pathology. Cytoskeleton (Hoboken) 2024. [PMID: 38391059 DOI: 10.1002/cm.21841] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2023] [Revised: 02/08/2024] [Accepted: 02/10/2024] [Indexed: 02/24/2024]
Abstract
Metastasis-associated 1 (MTA1), a subunit of the nucleosome remodeling and histone deacetylation (NuRD) corepressor complex, was reported to be expressed in the cytoplasm of skeletal muscles. However, the exact subcellular localization and the functional implications of MTA1 in skeletal muscles have not been examined. This study aims to demonstrate the subcellular localization of MTA1 in skeletal muscles and reveal its possible roles in skeletal muscle pathogenesis. Striated muscles (skeletal and cardiac) from C57BL/6 mice of 4-5 weeks were collected to examine the expression of MTA1 by Western blotting and immunohistochemistry. Immunofluorescence and immunoelectron microscopy were performed for MTA1, α-actinin (a Z-disc marker protein), and SMN (survival of motor neuron) proteins. Gene Expression Omnibus (GEO) data sets were analyzed using the GEO2R online tool to explore the functional implications of MTA1 in skeletal muscles. MTA1 expression was detected by Western blotting and immunohistochemistry in skeletal and cardiac muscles. Subcellular localization of MTA1 was found in the Z-disc of sarcomeres, where α-actinin and SMN were expressed. Data mining of GEO profiles suggested that MTA1 dysregulation is associated with multiple skeletal muscle defects, such as Duchenne muscular dystrophy, Emery-Dreifuss muscular dystrophy, nemaline myopathy, and dermatomyositis. The GEO analysis also showed that MTA1 expression gradually decreased with age in mouse skeletal muscle precursor cells. The subcellular localization of MTA1 in sarcomeres of skeletal muscles implies its biological roles in sarcomere structures and its possible contribution to skeletal muscle pathology.
Collapse
Affiliation(s)
- Hongsheng Xue
- Department of Thoracic Surgery, the First Affiliated Hospital of Dalian Medical University, Dalian, China
- Department of Thoracic Surgery, the Affiliated Zhongshan Hospital of Dalian University, Dalian, China
| | - Li Han
- Department of Thoracic Surgery, the Affiliated Zhongshan Hospital of Dalian University, Dalian, China
| | - Haidi Sun
- Department of Physiology and Medical Biology, Medical College, Dalian University, Dalian, China
| | - Zhe Piao
- Department of Thoracic Surgery, the Affiliated Zhongshan Hospital of Dalian University, Dalian, China
| | - Wenjun Cao
- Department of Thoracic Surgery, the Affiliated Zhongshan Hospital of Dalian University, Dalian, China
| | - Haili Qian
- State Key Laboratory of Molecular Oncology, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Zhilong Zhao
- Department of Thoracic Surgery, the Affiliated Zhongshan Hospital of Dalian University, Dalian, China
| | - Ming-Fei Lang
- Department of Physiology and Medical Biology, Medical College, Dalian University, Dalian, China
| | - Chundong Gu
- Department of Thoracic Surgery, the First Affiliated Hospital of Dalian Medical University, Dalian, China
| |
Collapse
|
2
|
Yang Y, Ding L, Li Y, Xuan C. Hsa_circ_0039411 promotes tumorigenesis and progression of papillary thyroid cancer by miR-1179/ABCA9 and miR-1205/MTA1 signaling pathways. J Cell Physiol 2020; 235:1321-1329. [PMID: 31270819 DOI: 10.1002/jcp.29048] [Citation(s) in RCA: 41] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2019] [Revised: 06/12/2019] [Accepted: 06/14/2019] [Indexed: 12/15/2022]
Abstract
Papillary thyroid cancer (PTC) is a common malignancy in endocrine system worldwide. Increasing evidence has shown that dysregulation of circular RNAs (circRNAs) could contribute to PTC tumorigenesis. The aims of this project are to investigate the potential role and molecular mechanism of hsa_circ_0039411 in PTC. In the project, RT-qPCR was performed to measure the expression profile of hsa_circ_0039411 in PTC tissues and cells. Cell counting kit-8, clonogenic, flow cytometric, and transwell experiments were used to identify the biological role of hsa_circ_0039411 on PTC cell progression. Bioinformatics methods, along with the dual-luciferase reporter test, was used to identify the potential mechanism of hsa_circ_0039411. Hsa_circ_0039411 was identified as enhanced in PTC tissues/cells. Gain-of-function experiments indicated that hsa_circ_0039411 facilitated PTC cell growth, migration, and invasion and inhibited cell apoptosis. Knockdown of hsa_circ_0039411 caused the opposite effects mentioned above. The mechanism exploration showed that hsa_circ_0039411 functioned as a sponge for miR-1179 and miR-1205 to elevate ATP-binding cassette transporter A9 (ABCA9) and metastasis-associated 1 (MTA1) expression at the post-transcriptional level, respectively. Further investigation confirmed that the functions of hsa_circ_0039411 are dependent on its modulation of ABCA9 and MTA1 in PTC cells. This study uncovered a mechanism of hsa_circ_0039411 in PTC, which might act as a novel therapeutic target for PTC.
Collapse
Affiliation(s)
- Yimin Yang
- Department of Intensive Care Unit, The First Hospital of Jilin University, Changchun, China
| | - Lili Ding
- Department of Intensive Care Unit, The First Hospital of Jilin University, Changchun, China
| | - Yanhua Li
- Department of Intensive Care Unit, The First Hospital of Jilin University, Changchun, China
| | - Chengluan Xuan
- Department of Anesthesiology, The First Hospital of Jilin University, Changchun, China
| |
Collapse
|
3
|
Zou G, Bai J, Li D, Chen Y. Effect of metformin on the proliferation, apoptosis, invasion and autophagy of ovarian cancer cells. Exp Ther Med 2019; 18:2086-2094. [PMID: 31452705 PMCID: PMC6704536 DOI: 10.3892/etm.2019.7803] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2018] [Accepted: 04/26/2019] [Indexed: 12/20/2022] Open
Abstract
The present study evaluated the effect of metformin on the SKOV3 ovarian cancer cell line and investigated the underlying mechanism. The inhibitory rate of SKOV3 cells was analyzed by MTT assay. SKOV3 cell apoptosis rate was quantitatively measured using flow cytometry. The effect of metformin on intracellular autophagosomes was observed using electron microscopy. The migration and invasion capabilities of SKOV3 cells were assessed by cell scratch test and Transwell assay. Results demonstrated that. the proliferation rate of SKOV3 cells was significantly inhibited in a time- and concentration-dependent manner following treatment with different concentrations of metformin for 24, 48 and 72 h. The number of migratory cells significantly decreased with increasing concentrations of metformin. The administration of metformin also promoted autophagy of ovarian cancer The expression level of microtubule associated protein 1 light chain 3-α protein was markedly upregulated. The mRNA expression level of metastasis-associated 1 (MTA1) was significantly downregulated following metformin treatment. In conclusion, metformin intervention suppressed SKOV3 proliferation and induced apoptosis in a concentration-dependent manner. Metformin also inhibited the invasion and migration of SKOV3 cells. It was hypothesized that the underlying mechanism of metformin's effect may involve MTA1 downregulation.
Collapse
Affiliation(s)
- Ge Zou
- Department of Obstetrics and Gynecology, North China University of Science and Technology Affiliated Hospital, Tangshan, Hebei 063000, P.R. China
| | - Jie Bai
- Department of Obstetrics and Gynecology, North China University of Science and Technology Affiliated Hospital, Tangshan, Hebei 063000, P.R. China
| | - Dandan Li
- Department of Obstetrics and Gynecology, North China University of Science and Technology Affiliated Hospital, Tangshan, Hebei 063000, P.R. China
| | - Yan Chen
- Department of Obstetrics and Gynecology, North China University of Science and Technology Affiliated Hospital, Tangshan, Hebei 063000, P.R. China
| |
Collapse
|
4
|
Deng G, Zheng X, Jiang P, Chen K, Wang X, Jiang K, Zhang W, Tu L, Yan D, Ma L, Ma S. Notch1 suppresses prostate cancer cell invasion via the metastasis-associated 1-KiSS-1 metastasis-suppressor pathway. Oncol Lett 2017; 14:4477-4482. [PMID: 29085444 PMCID: PMC5649609 DOI: 10.3892/ol.2017.6761] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2016] [Accepted: 02/14/2017] [Indexed: 01/28/2023] Open
Abstract
Notch1 is a type-1 transmembrane receptor which has been demonstrated to be involved in proliferation in various organisms. A number of studies have proposed that Notch signaling may be aberrantly activated, thus contributing to development, invasion and metastasis in a variety of human cancers. In the present study, the function and mechanism of Notch1 in human prostate cancer (PCa) LNCaP cells in vitro was investigated. Notch1 and cleaved-Notch1 expression were evaluated in human PCa cell lines, including LNCaP, PC-3 and DU 145, and the human prostate epithelial RWPE-1 cell line. LNCaP cells were transfected with Notch1-targeting short hairpin RNAs (shRNAs) and the level of proliferation, the ability to invade and the expression of genes associated with cancer cell invasion were subsequently investigated. Notch1 was highly expressed in LNCaP, PC-3 and DU 145 cells compared with RWPE-1 cells, while cleaved-Notch1 was expressed in LNCaP, PC-3 and DU 145 cells, and only to a minimal extent in RWPE-1 cells. Knockdown of Notch1 by shRNA in LNCaP cells markedly decreased cell invasion through Matrigel and inhibited cell proliferation 48 h following transfection. Reverse transcription-quantitative polymerase chain reaction analysis indicated that Notch1-knockdown resulted in a significant reduction of metastasis-associated 1 (MTA1) and increase of KiSS-1 metastasis-suppressor (KISS-1), mitogen-activated protein kinase 4 (MKK4) and cluster of differentiation 82 (KAI1). The present data demonstrated that expression of Notch1 was significantly associated with the invasion of prostate cancer. Knockdown of Notch1 decreased the invasive ability of LNCaP cells, which may be caused by downregulating MTA1 and upregulating KISS-1, MKK4 and KAI1. These findings indicated that targeting Notch1 may provide a novel method of suppressing or treating metastasis in prostate cancer.
Collapse
Affiliation(s)
- Gang Deng
- Department of Urology, Hangzhou First People's Hospital, Hangzhou, Zhejiang 310006, P.R. China
| | - Xiaoliang Zheng
- Center for Molecular Medicine, Zhejiang Academy of Medical Sciences, Hangzhou, Zhejiang 310000, P.R. China
| | - Peiwu Jiang
- Zhejiang Chinese Medical University and Hangzhou First People's Hospital, Hangzhou, Zhejiang 310006, P.R. China
| | - Kean Chen
- Zhejiang Chinese Medical University and Hangzhou First People's Hospital, Hangzhou, Zhejiang 310006, P.R. China
| | - Xiaoju Wang
- Center for Molecular Medicine, Zhejiang Academy of Medical Sciences, Hangzhou, Zhejiang 310000, P.R. China
| | - Kang Jiang
- Department of Urology, Hangzhou First People's Hospital, Hangzhou, Zhejiang 310006, P.R. China
| | - Wenjun Zhang
- Center for Molecular Medicine, Zhejiang Academy of Medical Sciences, Hangzhou, Zhejiang 310000, P.R. China
| | - Linglan Tu
- Center for Molecular Medicine, Zhejiang Academy of Medical Sciences, Hangzhou, Zhejiang 310000, P.R. China
| | - Dongmei Yan
- Center for Molecular Medicine, Zhejiang Academy of Medical Sciences, Hangzhou, Zhejiang 310000, P.R. China
| | - Libin Ma
- Department of Nephrology, Hangzhou First People's Hospital, Hangzhou, Zhejiang 310006, P.R. China
| | - Shenglin Ma
- Department of Oncology, Hangzhou First People's Hospital, Hangzhou, Zhejiang 310006, P.R. China
| |
Collapse
|