1
|
Mukhopadhyay C, Zhou P. Role(s) of G3BPs in Human Pathogenesis. J Pharmacol Exp Ther 2023; 387:100-110. [PMID: 37468286 PMCID: PMC10519580 DOI: 10.1124/jpet.122.001538] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2022] [Revised: 06/28/2023] [Accepted: 07/11/2023] [Indexed: 07/21/2023] Open
Abstract
Ras-GTPase-activating protein (SH3 domain)-binding proteins (G3BP) are RNA binding proteins that play a critical role in stress granule (SG) formation. SGs protect critical mRNAs from various environmental stress conditions by regulating mRNA stability and translation to maintain regulated gene expression. Recent evidence suggests that G3BPs can also regulate mRNA expression through interactions with RNA outside of SGs. G3BPs have been associated with a number of disease states, including cancer progression, invasion, metastasis, and viral infections, and may be useful as a cancer therapeutic target. This review summarizes the biology of G3BP including their structure, function, localization, role in cancer progression, virus replication, mRNA stability, and SG formation. We will also discuss the potential of G3BPs as a therapeutic target. SIGNIFICANCE STATEMENT: This review will discuss the molecular mechanism(s) and functional role(s) of Ras-GTPase-activating protein (SH3 domain)-binding proteins in the context of stress granule formation, interaction with viruses, stability of RNA, and tumorigenesis.
Collapse
Affiliation(s)
- Chandrani Mukhopadhyay
- Department of Pathology and Laboratory Medicine, Weill Medical College of Cornell University, New York
| | - Pengbo Zhou
- Department of Pathology and Laboratory Medicine, Weill Medical College of Cornell University, New York
| |
Collapse
|
2
|
Zhao Z, Qing Y, Dong L, Han L, Wu D, Li Y, Li W, Xue J, Zhou K, Sun M, Tan B, Chen Z, Shen C, Gao L, Small A, Wang K, Leung K, Zhang Z, Qin X, Deng X, Xia Q, Su R, Chen J. QKI shuttles internal m 7G-modified transcripts into stress granules and modulates mRNA metabolism. Cell 2023; 186:3208-3226.e27. [PMID: 37379838 PMCID: PMC10527483 DOI: 10.1016/j.cell.2023.05.047] [Citation(s) in RCA: 22] [Impact Index Per Article: 22.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2022] [Revised: 11/28/2022] [Accepted: 05/29/2023] [Indexed: 06/30/2023]
Abstract
N7-methylguanosine (m7G) modification, routinely occurring at mRNA 5' cap or within tRNAs/rRNAs, also exists internally in messenger RNAs (mRNAs). Although m7G-cap is essential for pre-mRNA processing and protein synthesis, the exact role of mRNA internal m7G modification remains elusive. Here, we report that mRNA internal m7G is selectively recognized by Quaking proteins (QKIs). By transcriptome-wide profiling/mapping of internal m7G methylome and QKI-binding sites, we identified more than 1,000 high-confidence m7G-modified and QKI-bound mRNA targets with a conserved "GANGAN (N = A/C/U/G)" motif. Strikingly, QKI7 interacts (via C terminus) with the stress granule (SG) core protein G3BP1 and shuttles internal m7G-modified transcripts into SGs to regulate mRNA stability and translation under stress conditions. Specifically, QKI7 attenuates the translation efficiency of essential genes in Hippo signaling pathways to sensitize cancer cells to chemotherapy. Collectively, we characterized QKIs as mRNA internal m7G-binding proteins that modulate target mRNA metabolism and cellular drug resistance.
Collapse
Affiliation(s)
- Zhicong Zhao
- Department of Systems Biology, Beckman Research Institute of City of Hope, Monrovia, CA 91016, USA; Department of Liver Surgery, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai 200127, China
| | - Ying Qing
- Department of Systems Biology, Beckman Research Institute of City of Hope, Monrovia, CA 91016, USA
| | - Lei Dong
- Department of Systems Biology, Beckman Research Institute of City of Hope, Monrovia, CA 91016, USA
| | - Li Han
- Department of Systems Biology, Beckman Research Institute of City of Hope, Monrovia, CA 91016, USA; School of Pharmacy, China Medical University, Shenyang, Liaoning 110001, China
| | - Dong Wu
- Department of Systems Biology, Beckman Research Institute of City of Hope, Monrovia, CA 91016, USA
| | - Yangchan Li
- Department of Systems Biology, Beckman Research Institute of City of Hope, Monrovia, CA 91016, USA; Department of Radiation Oncology, The First Affiliated Hospital of Sun Yat-sen University, Guangzhou, Guangdong 510080, China
| | - Wei Li
- Department of Systems Biology, Beckman Research Institute of City of Hope, Monrovia, CA 91016, USA
| | - Jianhuang Xue
- Department of Systems Biology, Beckman Research Institute of City of Hope, Monrovia, CA 91016, USA; Key Laboratory of Spine and Spinal Cord Injury Repair and Regeneration of Ministry of Education, Tongji Hospital affiliated to Tongji University, Shanghai 200065, China; Frontier Science Center for Stem Cell Research, School of Life Sciences and Technology, Tongji University, Shanghai 200092, China
| | - Keren Zhou
- Department of Systems Biology, Beckman Research Institute of City of Hope, Monrovia, CA 91016, USA
| | - Miao Sun
- Keck School of Medicine, University of Southern California, and Department of Pathology and Laboratory Medicine, Children's Hospital Los Angeles, Los Angeles, CA 90027, USA
| | - Brandon Tan
- Department of Systems Biology, Beckman Research Institute of City of Hope, Monrovia, CA 91016, USA
| | - Zhenhua Chen
- Department of Systems Biology, Beckman Research Institute of City of Hope, Monrovia, CA 91016, USA
| | - Chao Shen
- Department of Systems Biology, Beckman Research Institute of City of Hope, Monrovia, CA 91016, USA
| | - Lei Gao
- Department of Systems Biology, Beckman Research Institute of City of Hope, Monrovia, CA 91016, USA
| | - Andrew Small
- Department of Systems Biology, Beckman Research Institute of City of Hope, Monrovia, CA 91016, USA
| | - Kitty Wang
- Department of Systems Biology, Beckman Research Institute of City of Hope, Monrovia, CA 91016, USA
| | - Keith Leung
- Department of Systems Biology, Beckman Research Institute of City of Hope, Monrovia, CA 91016, USA
| | - Zheng Zhang
- Department of Systems Biology, Beckman Research Institute of City of Hope, Monrovia, CA 91016, USA
| | - Xi Qin
- Department of Systems Biology, Beckman Research Institute of City of Hope, Monrovia, CA 91016, USA
| | - Xiaolan Deng
- Department of Systems Biology, Beckman Research Institute of City of Hope, Monrovia, CA 91016, USA
| | - Qiang Xia
- Department of Liver Surgery, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai 200127, China.
| | - Rui Su
- Department of Systems Biology, Beckman Research Institute of City of Hope, Monrovia, CA 91016, USA.
| | - Jianjun Chen
- Department of Systems Biology, Beckman Research Institute of City of Hope, Monrovia, CA 91016, USA; City of Hope Comprehensive Cancer Center, City of Hope, Duarte, CA 91010, USA.
| |
Collapse
|
3
|
Liu S, Tian S, Lin T, He X, Eze Ideozu J, Wang R, Wang Y, Yue D, Geng H. G3BP1 regulates breast cancer cell proliferation and metastasis by modulating PKCζ. Front Genet 2022; 13:1034889. [PMID: 36330442 PMCID: PMC9623284 DOI: 10.3389/fgene.2022.1034889] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2022] [Accepted: 10/05/2022] [Indexed: 11/30/2022] Open
Abstract
Breast cancer is a leading cause of death and morbidity among female cancers. Several factors, including hormone levels, lifestyle, and dysregulated RNA-binding proteins, have been associated with the development of breast cancer. Ras-GTPase-activating protein SH3 domain-binding protein 1 (G3BP1) and protein kinase C, Zeta isoform (PKCζ) are oncogenes implicated in numerous cancers, including breast cancer. However, their interaction and role in promoting breast cancer proliferation and metastasis have not been well-characterized. In the present study, we demonstrated that G3BP1 expression was elevated in breast cancer and that knockdown of G3BP1 diminished the proliferation and metastasis of breast cancer cells. Mechanistically, we identified proliferation and a series of metastasis-related properties, including chemotaxis, migration, Golgi polarity localization, and actin polymerization, that were modulated by G3BP1 knockdown. We found that G3BP1 and PKCζ were co-localized and interacted intracellularly, and they co-underwent membrane translocation under EGF stimulation. Following the knockdown of G3BP1, we observed the membrane translocation and phosphorylation of PKCζ were significantly impaired, suggesting that G3BP1 regulates the activation of PKCζ. Our findings indicate that G3BP1 plays multiple roles in breast cancer cell proliferation and metastasis. The activation of PKCζ by G3BP1 may be the specific mechanism underlying the process.
Collapse
Affiliation(s)
- Shuang Liu
- Department of Microbiology, School of Medical Laboratory, Tianjin Medical University, Tianjin, China
| | - Shaoping Tian
- Department of Microbiology, School of Medical Laboratory, Tianjin Medical University, Tianjin, China
| | - Tianyu Lin
- Department of Microbiology, School of Medical Laboratory, Tianjin Medical University, Tianjin, China
| | - Xin He
- Department of Microbiology, School of Medical Laboratory, Tianjin Medical University, Tianjin, China
- Department of Pediatrics, School of Medicine and Public Health, University of Wisconsin-Madison, Madison, WI, United States
| | - Justin Eze Ideozu
- Genomic Medicine, Genomic Research Center, AbbVie, North Chicago, IL, United States
| | - Rui Wang
- Department of Microbiology, School of Medical Laboratory, Tianjin Medical University, Tianjin, China
| | - Yong Wang
- Department of Urology, The Second Hospital of Tianjin Medical University, Tianjin Medical University, Tianjin, China
| | - Dan Yue
- Department of Microbiology, School of Medical Laboratory, Tianjin Medical University, Tianjin, China
- *Correspondence: Dan Yue, ; Hua Geng,
| | - Hua Geng
- Department of Microbiology, School of Medical Laboratory, Tianjin Medical University, Tianjin, China
- Center for Intestinal and Liver Inflammation Research, Stanley Manne Children’s Research Institute, Ann & Robert H. Lurie Children’s Hospital of Chicago, Chicago, IL, United States
- Center Department of Pediatrics, Feinberg School of Medicine, Northwestern University, Chicago, IL, United States
- *Correspondence: Dan Yue, ; Hua Geng,
| |
Collapse
|
4
|
Ge Y, Jin J, Li J, Ye M, Jin X. The roles of G3BP1 in human diseases (review). Gene X 2022; 821:146294. [PMID: 35176431 DOI: 10.1016/j.gene.2022.146294] [Citation(s) in RCA: 18] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2021] [Revised: 01/24/2022] [Accepted: 02/03/2022] [Indexed: 11/04/2022] Open
Abstract
Ras-GTPase-activating protein binding protein 1 (G3BP1) is a multifunctional binding protein involved in a variety of biological functions, including cell proliferation, metastasis, apoptosis, differentiation and RNA metabolism. It has been revealed that G3BP1, as an antiviral factor, can interact with viral proteins and regulate the assembly of stress granules (SGs), which can inhibit viral replication. Furthermore, several viruses have the ability to hijack G3BP1 as a cofactor, recruiting translation initiation factors to promote viral proliferation. However, many functions of G3BP1 are associated with other diseases. In various cancers, G3BP1 is a cancer-promoting factor, which can promote the proliferation, invasion and metastasis of cancer cells. Moreover, compared with normal tissues, G3BP1 expression is higher in tumor tissues, indicating that it can be used as an indicator for cancer diagnosis. In this review, the structure of G3BP1 and the regulation of G3BP1 in multiple dimensions are described. In addition, the effects and potential mechanisms of G3BP1 on various carcinomas, viral infections, nervous system diseases and cardiovascular diseases are elucidated, which may provide a direction for clinical applications of G3BP1 in the future.
Collapse
Affiliation(s)
- Yidong Ge
- The Affiliated Hospital of Medical School, Ningbo University, Ningbo 315020, China; Department of Biochemistry and Molecular Biology, and Zhejiang Key Laboratory of Pathphysiology, Medical School of Ningbo University, Ningbo 315211, China
| | - Jiabei Jin
- The Affiliated Hospital of Medical School, Ningbo University, Ningbo 315020, China; Department of Biochemistry and Molecular Biology, and Zhejiang Key Laboratory of Pathphysiology, Medical School of Ningbo University, Ningbo 315211, China
| | - Jinyun Li
- The Affiliated Hospital of Medical School, Ningbo University, Ningbo 315020, China; Department of Biochemistry and Molecular Biology, and Zhejiang Key Laboratory of Pathphysiology, Medical School of Ningbo University, Ningbo 315211, China
| | - Meng Ye
- The Affiliated Hospital of Medical School, Ningbo University, Ningbo 315020, China; Department of Biochemistry and Molecular Biology, and Zhejiang Key Laboratory of Pathphysiology, Medical School of Ningbo University, Ningbo 315211, China.
| | - Xiaofeng Jin
- The Affiliated Hospital of Medical School, Ningbo University, Ningbo 315020, China; Department of Biochemistry and Molecular Biology, and Zhejiang Key Laboratory of Pathphysiology, Medical School of Ningbo University, Ningbo 315211, China.
| |
Collapse
|
5
|
Asadi MR, Moslehian MS, Sabaie H, Poornabi M, Ghasemi E, Hassani M, Hussen BM, Taheri M, Rezazadeh M. Stress Granules in the Anti-Cancer Medications Mechanism of Action: A Systematic Scoping Review. Front Oncol 2021; 11:797549. [PMID: 35004322 PMCID: PMC8739770 DOI: 10.3389/fonc.2021.797549] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2021] [Accepted: 12/08/2021] [Indexed: 12/16/2022] Open
Abstract
Stress granule (SG) formation is a well-known cellular mechanism for minimizing stress-related damage and increasing cell survival. In addition to playing a critical role in the stress response, SGs have emerged as critical mediators in human health. It seems logical that SGs play a key role in cancer cell formation, development, and metastasis. Recent studies have shown that many SG components contribute to the anti-cancer medications' responses through tumor-associated signaling pathways and other mechanisms. SG proteins are known for their involvement in the translation process, control of mRNA stability, and capacity to function in both the cytoplasm and nucleus. The current systematic review aimed to include all research on the impact of SGs on the mechanism of action of anti-cancer medications and was conducted using a six-stage methodological framework and the PRISMA guideline. Prior to October 2021, a systematic search of seven databases for eligible articles was performed. Following the review of the publications, the collected data were subjected to quantitative and qualitative analysis. Notably, Bortezomib, Sorafenib, Oxaliplatin, 5-fluorouracil, Cisplatin, and Doxorubicin accounted for the majority of the medications examined in the studies. Overall, this systematic scoping review attempts to demonstrate and give a complete overview of the function of SGs in the mechanism of action of anti-cancer medications by evaluating all research.
Collapse
Affiliation(s)
- Mohammad Reza Asadi
- Student Research Committee, Tabriz University of Medical Sciences, Tabriz, Iran
| | | | - Hani Sabaie
- Student Research Committee, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Marziye Poornabi
- Student Research Committee, School of Medicine, Shahroud University of Medical Science, Shahroud, Iran
| | - Elham Ghasemi
- Department of Molecular Medicine and Biotechnology, Faculty of Medicine, Arak University of Medical Sciences, Arak, Iran
| | - Mehdi Hassani
- Student Research Committee, University of Social Welfare and Rehabilitation Sciences, Tehran, Iran
| | - Bashdar Mahmud Hussen
- Department of Pharmacognosy, College of Pharmacy, Hawler Medical University, Erbil, Iraq
| | - Mohammad Taheri
- Skull Base Research Center, Loghman Hakim Hospital, Shahid Beheshti University of Medical Sciences, Tehran, Iran
- Institute of Human Genetics, Jena University Hospital, Jena, Germany
| | - Maryam Rezazadeh
- Student Research Committee, Tabriz University of Medical Sciences, Tabriz, Iran
- Clinical Research Development Unit of Tabriz Valiasr Hospital, Tabriz University of Medical Sciences, Tabriz, Iran
| |
Collapse
|
6
|
Chatterjee D, Chakrabarti O. Role of stress granules in modulating senescence and promoting cancer progression: Special emphasis on glioma. Int J Cancer 2021; 150:551-561. [PMID: 34460104 DOI: 10.1002/ijc.33787] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2021] [Revised: 07/22/2021] [Accepted: 08/24/2021] [Indexed: 12/12/2022]
Abstract
Stress granules (SGs) contain mRNAs and proteins stalled in translation during stress; these are increasingly being implicated in diseases, including neurological disorders and cancer. The dysregulated assembly, persistence, disassembly and clearance of SGs contribute to the process of senescence. Senescence has long been a mysterious player in cellular physiology and associated diseases. The systemic process of aging has been pivotal in the development of various neurological disorders like age-related neuropathy, Alzheimer's disease and Parkinson's disease. Glioma is a cancer of neurological origin with a very poor prognosis and high rate of recurrence, SGs have only recently been implicated in its pathogenesis. Senescence has long been established to play an antitumorigenic role, however, relatively less studied is its protumorigenic importance. Here, we have evaluated the existing literature to assess the crosstalk of the two biological phenomena of senescence and SG formation in the context of tumorigenesis. In this review, we have attempted to analyze the contribution of senescence in regulating diverse cellular processes, like, senescence associated secretory phenotype (SASP), microtubular reorganization, telomeric alteration, autophagic clearance and how intricately these phenomena are tied with the formation of SGs. Finally, we propose that interplay between senescence, its contributing factors and the genesis of SGs can drive tumorigenicity of gliomas, which can potentially be utilized for therapeutic intervention.
Collapse
Affiliation(s)
- Debmita Chatterjee
- Biophysics & Structural Genomics Division, Saha Institute of Nuclear Physics, Kolkata, India
| | - Oishee Chakrabarti
- Biophysics & Structural Genomics Division, Saha Institute of Nuclear Physics, Kolkata, India.,Homi Bhabha National Institute, Mumbai, Maharashtra, India
| |
Collapse
|
7
|
SILAC-based quantitative MS approach reveals Withaferin A regulated proteins in prostate cancer. J Proteomics 2021; 247:104334. [PMID: 34298187 DOI: 10.1016/j.jprot.2021.104334] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2020] [Revised: 06/30/2021] [Accepted: 07/16/2021] [Indexed: 01/06/2023]
Abstract
Withaferin A (WA) is a steroidal lactone extracted from Withania somnifera, commonly known as Ashwagandha. WA has several therapeutic benefits. The current study aims to identify proteins that are potentially regulated by WA in prostate cancer (PCA) cells. We used a SILAC-based proteomic approach to analyze the expression of proteins in response to WA treatment at 4 h and 24 h time points in three PCA cell lines: 22Rv1, DU-145, and LNCaP. Ontology analysis suggested that prolonged treatment with WA upregulated the expression of proteins involved in stress-response pathways. Treatment with WA increased oxidative stress, reduced global mRNA translation, and elevated the expression of cytoprotective stress granule (SG) protein G3BP1. WA treatment also enhanced the formation of SGs. The elevated expression of G3BP1 and the formation of SGs might constitute a mechanism of cytoprotection in PCA cells. Knockdown of G3BP1 blocked SG formation and enhanced the efficacy of WA to reduce PCA cell survival. SIGNIFICANCE: Withaferin A, a steroidal lactone, extracted from Withania somnifera is a promising anti-cancer drug. Using a SILAC-based quantitative proteomic approach, we identified proteins changed by WA-treatment at 4 h and 24 h in three prostate cancer (PCA) cell lines. WA-treatment induced the expression of proteins involved in apoptosis and reduced the expression of proteins involved in cell growth at 4 h. WA-treatment for 24 h enhanced the expression of proteins involved in stress response pathways. WA-treated cells exhibited increased oxidative stress, reduced mRNA translation and enhanced SG formation. PCA is characterized by higher metabolic rate and increased oxidative stress. PCA with a higher stress tolerance can effectively adapt to anti-cancer treatment stress, leading to drug resistance and cellular protection. Enhancing the level of oxidative stress along with inhibition of corresponding cytoprotective stress response pathways is a feasible option to prevent PCA from getting adapted to treatment stress. WA-treatment induced oxidative stress, in combination with blocking SGs by G3BP1 targeting, offers a therapeutic strategy to reduce PCA cell survival.
Collapse
|
8
|
Mechanisms of tRNA-derived fragments and tRNA halves in cancer treatment resistance. Biomark Res 2020; 8:52. [PMID: 33072328 PMCID: PMC7559774 DOI: 10.1186/s40364-020-00233-0] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2020] [Accepted: 10/02/2020] [Indexed: 12/22/2022] Open
Abstract
The tRNA-derived fragments (tRFs) and tRNA halves (tiRNAs) are newly discovered noncoding RNAs in recent years. They are derived from specific cleavage of mature and pre-tRNAs and expressed in various cancers. They enhance cell proliferation and metastasis or inhibit cancer progression. Many studies have investigated their roles in the diagnosis, progression, metastasis, and prognosis of various cancers, but the mechanisms through which they are involved in resistance to cancer treatment are unclear. This review outlines the classification of tRFs and tiRNAs and their mechanisms in cancer drug resistance, thus providing new ideas for cancer treatment.
Collapse
|
9
|
Si W, Li Z, Huang Z, Ye S, Li X, Li Y, Kuang W, Chen D, Zhu M. RNA Binding Protein Motif 3 Inhibits Oxygen-Glucose Deprivation/Reoxygenation-Induced Apoptosis Through Promoting Stress Granules Formation in PC12 Cells and Rat Primary Cortical Neurons. Front Cell Neurosci 2020; 14:559384. [PMID: 32982696 PMCID: PMC7492797 DOI: 10.3389/fncel.2020.559384] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2020] [Accepted: 08/13/2020] [Indexed: 11/17/2022] Open
Abstract
As a sensitive cold-shock protein, RNA binding protein motif 3 (RBM3) exhibits a neuroprotective function in the condition of brain injury. However, how RBM3 is involved in acute ischemic stroke by affecting stress granules (SGs) remains unclear. Here, we established an oxygen-glucose deprivation/reperfusion (OGD/R) model in rat primary cortical neurons and PC12 cells to explore the potential mechanism between RBM3 and SG formation in acute ischemic/reperfusion (I/R) condition. The immunofluorescence results showed that the SG formation significantly decreased in rat primary cortical neurons and PC12 cells during the reperfusion period after 6 h of OGD stimulation. The western blot results, flow cytometry analysis, and cell viability assessment showed that the RBM3 expression and ratio of cell viability significantly decreased, while the rate of apoptosis increased in PC12 cells during the reperfusion period after 6 h of OGD stimulation. Co-immunoprecipitation (Co-IP) and immunofluorescence indicated that RBM3 and GTPase-activating protein-binding protein 1 (G3BP1) colocalized cytoplasm of PC12 cells after 6 h of OGD stimulation when the SGs formation reached the highest level. Besides, overexpression and knockdown of the RBM3 were achieved via plasmid transfection and CRISPR-Cas9 technology, respectively. The results of overexpression and knockdown of RBM3 gene illustrated the pivotal role of RBM3 in affecting SG formation and apoptosis level in OGD-treated PC12 cells. In conclusion, RBM3 could combine with G3BP1 resulted in increasing stress granules generation in rat primary cortical neurons and PC12 cells after 6 h of oxygen-glucose deprivation (OGD) injury, which ultimately reduced the apoptosis in OGD-induced cells. Our study may enable a new promising target for alleviating ischemia-reperfusion injury in cells.
Collapse
Affiliation(s)
- Wenwen Si
- Shenzhen Bao'an Traditional Chinese Medicine Hospital (Group), Guangzhou University of Chinese Medicine, Shenzhen, China
| | - Zhen Li
- Department of Anatomy, The Research Center of Basic Integrative Medicine, Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Zifeng Huang
- Shenzhen Hospital of Integrated Traditional Chinese and Western Medicine, Guangzhou University of Chinese Medicine, Shenzhen, China
| | - Shanyu Ye
- Department of Anatomy, The Research Center of Basic Integrative Medicine, Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Xinrong Li
- Shenzhen Hospital of Integrated Traditional Chinese and Western Medicine, Guangzhou University of Chinese Medicine, Shenzhen, China
| | - Yi Li
- The First Clinical Medical College, Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Weihong Kuang
- Guangdong Key Laboratory for Research and Development of Natural Drugs, Key Laboratory of Research and Development of New Medical Materials of Guangdong Medical University, School of Pharmacy, Guangdong Medical University, Dongguan, China
| | - Dongfeng Chen
- Department of Anatomy, The Research Center of Basic Integrative Medicine, Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Meiling Zhu
- Shenzhen Hospital of Integrated Traditional Chinese and Western Medicine, Guangzhou University of Chinese Medicine, Shenzhen, China
| |
Collapse
|
10
|
Wang J, Ren D, Sun Y, Xu C, Wang C, Cheng R, Wang L, Jia G, Ren J, Ma J, Tu Y, Ji H. Inhibition of PLK4 might enhance the anti-tumour effect of bortezomib on glioblastoma via PTEN/PI3K/AKT/mTOR signalling pathway. J Cell Mol Med 2020; 24:3931-3947. [PMID: 32126150 PMCID: PMC7171416 DOI: 10.1111/jcmm.14996] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2019] [Revised: 10/26/2019] [Accepted: 11/23/2019] [Indexed: 12/20/2022] Open
Abstract
Glioblastoma (GBM) is one of the most common aggressive cancers of the central nervous system in adults with a high mortality rate. Bortezomib is a boronic acid-based potent proteasome inhibitor that has been actively studied for its anti-tumour effects through inhibition of the proteasome. The proteasome is a key component of the ubiquitin-proteasome pathway that is critical for protein homeostasis, regulation of cellular growth, and apoptosis. Overexpression of polo-like kinase 4 (PLK4) is commonly reported in tumour cells and increases their invasive and metastatic abilities. In this study, we established a cell model of PLK4 knockdown and overexpression in LN-18, A172 and LN-229 cells and found that knockdown of PLK4 expression enhanced the anti-tumour effect of bortezomib. We further found that this effect may be mediated by the PTEN/PI3K/AKT/mTOR signalling pathway and that the apoptotic and oxidative stress processes were activated, while the expression of matrix metalloproteinases (MMPs) was down-regulated. Similar phenomenon was observed using in vitro experiments. Thus, we speculate that PLK4 inhibition may be a new therapeutic strategy for GBM.
Collapse
Affiliation(s)
- Jing Wang
- Department of neurosurgery, Shanxi academy of medical science, Shanxi Bethune Hospital, Taiyuan, China
| | - Dengpeng Ren
- Department of neurosurgery, Central Hospital of Yuncheng city, Yuncheng, China
| | - Yan Sun
- Neurological intensive care unit, Special medical center of PAP, Tianjin, China
| | - Chao Xu
- Neurological intensive care unit, Special medical center of PAP, Tianjin, China
| | - Chunhong Wang
- Department of neurosurgery, Shanxi people's hospital, Taiyuan, China
| | - Rui Cheng
- Department of neurosurgery, Shanxi people's hospital, Taiyuan, China
| | - Lina Wang
- Neurological intensive care unit, Special medical center of PAP, Tianjin, China
| | - Guijun Jia
- Department of neurosurgery, Shanxi people's hospital, Taiyuan, China
| | - Jinrui Ren
- Department of neurosurgery, Shanxi people's hospital, Taiyuan, China
| | - Jiuhong Ma
- Department of neurosurgery, Shanxi people's hospital, Taiyuan, China
| | - Yue Tu
- Neurological intensive care unit, Special medical center of PAP, Tianjin, China
| | - Hongming Ji
- Department of neurosurgery, Shanxi people's hospital, Taiyuan, China
| |
Collapse
|