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Rossi V, Nielson SE, Ortolano A, Lonardo I, Haroldsen E, Comer D, Price OM, Wallace N, Hevel JM. Oligomerization of protein arginine methyltransferase 1 and its effect on methyltransferase activity and substrate specificity. Protein Sci 2024; 33:e5118. [PMID: 39022984 PMCID: PMC11255602 DOI: 10.1002/pro.5118] [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: 04/04/2024] [Revised: 06/30/2024] [Accepted: 07/02/2024] [Indexed: 07/20/2024]
Abstract
Proper protein arginine methylation by protein arginine methyltransferase 1 (PRMT1) is critical for maintaining cellular health, while dysregulation is often associated with disease. How the activity of PRMT1 is regulated is therefore paramount, but is not clearly understood. Several studies have observed higher order oligomeric species of PRMT1, but it is unclear if these exist at physiological concentrations and there is confusion in the literature about how oligomerization affects activity. We therefore sought to determine which oligomeric species of PRMT1 are physiologically relevant, and quantitatively correlate activity with specific oligomer forms. Through quantitative western blotting, we determined that concentrations of PRMT1 available in a variety of human cell lines are in the sub-micromolar to low micromolar range. Isothermal spectral shift binding data were modeled to a monomer/dimer/tetramer equilibrium with an EC50 for tetramer dissociation of ~20 nM. A combination of sedimentation velocity and Native polyacrylamide gel electrophoresis experiments directly confirmed that the major oligomeric species of PRMT1 at physiological concentrations would be dimers and tetramers. Surprisingly, the methyltransferase activity of a dimeric PRMT1 variant is similar to wild type, tetrameric PRMT1 with some purified substrates, but dimer and tetramer forms of PRMT1 show differences in catalytic efficiencies and substrate specificity for other substrates. Our results define an oligomerization paradigm for PRMT1, show that the biophysical characteristics of PRMT1 are poised to support a monomer/dimer/tetramer equilibrium in vivo, and suggest that the oligomeric state of PRMT1 could be used to regulate substrate specificity.
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Affiliation(s)
- Vincent Rossi
- Department of Chemistry and BiochemistryUtah State UniversityLoganUtahUSA
| | - Sarah E. Nielson
- Department of Chemistry and BiochemistryUtah State UniversityLoganUtahUSA
| | - Ariana Ortolano
- Department of Chemistry and BiochemistryUtah State UniversityLoganUtahUSA
| | - Isabella Lonardo
- Department of Chemistry and BiochemistryUtah State UniversityLoganUtahUSA
| | - Emeline Haroldsen
- Department of Chemistry and BiochemistryUtah State UniversityLoganUtahUSA
| | - Drake Comer
- Department of Chemistry and BiochemistryUtah State UniversityLoganUtahUSA
| | - Owen M Price
- Department of Chemistry and BiochemistryUtah State UniversityLoganUtahUSA
| | | | - Joan M. Hevel
- Department of Chemistry and BiochemistryUtah State UniversityLoganUtahUSA
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Yuan C, Zhou K, Pan X, Wang D, Zhang C, Lin Y, Chen Z, Qin J, Du X, Huang Y. Comparative physiological, biochemical and transcriptomic analyses to reveal potential regulatory mechanisms in response to starvation stress in Cipangopaludina chinensis. COMPARATIVE BIOCHEMISTRY AND PHYSIOLOGY. PART D, GENOMICS & PROTEOMICS 2024; 52:101279. [PMID: 38941864 DOI: 10.1016/j.cbd.2024.101279] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/04/2024] [Revised: 06/03/2024] [Accepted: 06/14/2024] [Indexed: 06/30/2024]
Abstract
Cipangopaludina chinensis, as a financially significant species in China, represents a gastropod in nature which frequently encounters starvation stress owing to its limited prey options. However, the underlying response mechanisms to combat starvation have not been investigated in depth. We collected C. chinensis under several times of starvation stress (0, 7, 30, and 60 days) for nutrient, biochemical characteristics and transcriptome analyses. The results showed that prolonged starvation stress (> 30 days) caused obvious fluctuations in the nutrient composition of snails, with dramatic reductions in body weight, survival and digestive enzyme activity (amylase, protease, and lipase), and markedly enhanced the antioxidant enzyme activities of the snails. Comparative transcriptome analyses revealed 3538 differentially expressed genes (DEGs), which were significantly associated with specific starvation stress-responsive pathways, including oxidative phosphorylation and alanine, aspartate, and glutamate metabolism. Then, we identified 40 candidate genes (e.g., HACD2, Cp1, CYP1A2, and GPX1) response to starvation stress through STEM and WGCNA analyses. RT-qPCR verified the accuracy and reliability of the high-throughput sequencing results. This study provides insights into snail overwintering survival and the potential regulatory mechanisms of snail adaptation to starvation stress.
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Affiliation(s)
- Chang Yuan
- Guangxi Academy of Fishery Sciences, Key Laboratory of Aquatic Genetic Breeding and Healthy Farming in Guangxi, Nanning, Guangxi 530021, China
| | - Kangqi Zhou
- Guangxi Academy of Fishery Sciences, Key Laboratory of Aquatic Genetic Breeding and Healthy Farming in Guangxi, Nanning, Guangxi 530021, China
| | - Xianhui Pan
- Guangxi Academy of Fishery Sciences, Key Laboratory of Aquatic Genetic Breeding and Healthy Farming in Guangxi, Nanning, Guangxi 530021, China.
| | - Dapeng Wang
- Guangxi Academy of Fishery Sciences, Key Laboratory of Aquatic Genetic Breeding and Healthy Farming in Guangxi, Nanning, Guangxi 530021, China.
| | - Caiqun Zhang
- Guangxi Academy of Fishery Sciences, Key Laboratory of Aquatic Genetic Breeding and Healthy Farming in Guangxi, Nanning, Guangxi 530021, China
| | - Yong Lin
- Guangxi Academy of Fishery Sciences, Key Laboratory of Aquatic Genetic Breeding and Healthy Farming in Guangxi, Nanning, Guangxi 530021, China
| | - Zhong Chen
- Guangxi Academy of Fishery Sciences, Key Laboratory of Aquatic Genetic Breeding and Healthy Farming in Guangxi, Nanning, Guangxi 530021, China
| | - Junqi Qin
- Guangxi Academy of Fishery Sciences, Key Laboratory of Aquatic Genetic Breeding and Healthy Farming in Guangxi, Nanning, Guangxi 530021, China
| | - Xuesong Du
- Guangxi Academy of Fishery Sciences, Key Laboratory of Aquatic Genetic Breeding and Healthy Farming in Guangxi, Nanning, Guangxi 530021, China
| | - Yin Huang
- Guangxi Academy of Fishery Sciences, Key Laboratory of Aquatic Genetic Breeding and Healthy Farming in Guangxi, Nanning, Guangxi 530021, China
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Gao Y, Feng C, Ma J, Yan Q. Protein arginine methyltransferases (PRMTs): Orchestrators of cancer pathogenesis, immunotherapy dynamics, and drug resistance. Biochem Pharmacol 2024; 221:116048. [PMID: 38346542 DOI: 10.1016/j.bcp.2024.116048] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2023] [Revised: 01/15/2024] [Accepted: 02/06/2024] [Indexed: 02/16/2024]
Abstract
Protein Arginine Methyltransferases (PRMTs) are a family of enzymes regulating protein arginine methylation, which is a post-translational modification crucial for various cellular processes. Recent studies have highlighted the mechanistic role of PRMTs in cancer pathogenesis, immunotherapy, and drug resistance. PRMTs are involved in diverse oncogenic processes, including cell proliferation, apoptosis, and metastasis. They exert their effects by methylation of histones, transcription factors, and other regulatory proteins, resulting in altered gene expression patterns. PRMT-mediated histone methylation can lead to aberrant chromatin remodeling and epigenetic changes that drive oncogenesis. Additionally, PRMTs can directly interact with key signaling pathways involved in cancer progression, such as the PI3K/Akt and MAPK pathways, thereby modulating cell survival and proliferation. In the context of cancer immunotherapy, PRMTs have emerged as critical regulators of immune responses. They modulate immune checkpoint molecules, including programmed cell death protein 1 (PD-1), through arginine methylation. Drug resistance is a significant challenge in cancer treatment, and PRMTs have been implicated in this phenomenon. PRMTs can contribute to drug resistance through multiple mechanisms, including the epigenetic regulation of drug efflux pumps, altered DNA damage repair, and modulation of cell survival pathways. In conclusion, PRMTs play critical roles in cancer pathogenesis, immunotherapy, and drug resistance. In this overview, we have endeavored to illuminate the mechanistic intricacies of PRMT-mediated processes. Shedding light on these aspects will offer valuable insights into the fundamental biology of cancer and establish PRMTs as promising therapeutic targets.
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Affiliation(s)
- Yihang Gao
- Department of Laboratory Medicine, the Second Hospital of Jilin University, Changchun 130000, China
| | - Chongchong Feng
- Department of Laboratory Medicine, the Second Hospital of Jilin University, Changchun 130000, China.
| | - Jingru Ma
- Department of Laboratory Medicine, the Second Hospital of Jilin University, Changchun 130000, China
| | - Qingzhu Yan
- Department of Ultrasound Medicine, the Second Hospital of Jilin University, Changchun 130000, China
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Bhattarai PY, Kim G, Bhandari D, Shrestha P, Choi HS. Regulation of m 6A Methylome in Cancer: Mechanisms, Implications, and Therapeutic Strategies. Cells 2023; 13:66. [PMID: 38201270 PMCID: PMC10778393 DOI: 10.3390/cells13010066] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2023] [Revised: 12/16/2023] [Accepted: 12/27/2023] [Indexed: 01/12/2024] Open
Abstract
Reversible N6-adenosine methylation of mRNA, referred to as m6A modification, has emerged as an important regulator of post-transcriptional RNA processing. Numerous studies have highlighted its crucial role in the pathogenesis of diverse diseases, particularly cancer. Post-translational modifications of m6A-related proteins play a fundamental role in regulating the m6A methylome, thereby influencing the fate of m6A-methylated RNA. A comprehensive understanding of the mechanisms that regulate m6A-related proteins and the factors contributing to the specificity of m6A deposition has the potential to unveil novel therapeutic strategies for cancer treatment. This review provides an in-depth overview of our current knowledge of post-translational modifications of m6A-related proteins, associated signaling pathways, and the mechanisms that drive the specificity of m6A modifications. Additionally, we explored the role of m6A-dependent mechanisms in the progression of various human cancers. Together, this review summarizes the mechanisms underlying the regulation of the m6A methylome to provide insight into its potential as a novel therapeutic strategy for the treatment of cancer.
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Affiliation(s)
| | | | | | | | - Hong Seok Choi
- College of Pharmacy, Chosun University, Gwangju 61452, Republic of Korea; (P.Y.B.); (G.K.); (D.B.); (P.S.)
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Kulig P, Łuczkowska K, Bakinowska E, Baumert B, Machaliński B. Epigenetic Alterations as Vital Aspects of Bortezomib Molecular Action. Cancers (Basel) 2023; 16:84. [PMID: 38201512 PMCID: PMC10778101 DOI: 10.3390/cancers16010084] [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: 11/29/2023] [Revised: 12/20/2023] [Accepted: 12/21/2023] [Indexed: 01/12/2024] Open
Abstract
Bortezomib (BTZ) is widely implemented in the treatment of multiple myeloma (MM). Its main mechanism of action is very well established. BTZ selectively and reversibly inhibits the 26S proteasome. More precisely, it interacts with the chymotryptic site of the 20S proteasome and therefore inhibits the degradation of proteins. This results in the intracellular accumulation of misfolded or otherwise defective proteins leading to growth inhibition and apoptosis. As well as interfering with the ubiquitin-proteasome complex, BTZ elicits various epigenetic alterations which contribute to its cytotoxic effects as well as to the development of BTZ resistance. In this review, we summarized the epigenetic alterations elicited by BTZ. We focused on modifications contributing to the mechanism of action, those mediating drug-resistance development, and epigenetic changes promoting the occurrence of peripheral neuropathy. In addition, there are therapeutic strategies which are specifically designed to target epigenetic changes. Herein, we also reviewed epigenetic agents which might enhance BTZ-related cytotoxicity or restore the sensitivity to BTZ of resistant clones. Finally, we highlighted putative future perspectives regarding the role of targeting epigenetic changes in patients exposed to BTZ.
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Affiliation(s)
- Piotr Kulig
- Department of General Pathology, Pomeranian Medical University, 70-111 Szczecin, Poland; (P.K.); (K.Ł.); (E.B.)
| | - Karolina Łuczkowska
- Department of General Pathology, Pomeranian Medical University, 70-111 Szczecin, Poland; (P.K.); (K.Ł.); (E.B.)
| | - Estera Bakinowska
- Department of General Pathology, Pomeranian Medical University, 70-111 Szczecin, Poland; (P.K.); (K.Ł.); (E.B.)
| | - Bartłomiej Baumert
- Department of Hematology and Transplantology, Pomeranian Medical University, 71-252 Szczecin, Poland
| | - Bogusław Machaliński
- Department of General Pathology, Pomeranian Medical University, 70-111 Szczecin, Poland; (P.K.); (K.Ł.); (E.B.)
- Department of Hematology and Transplantology, Pomeranian Medical University, 71-252 Szczecin, Poland
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Wang Y, Wang C, Guan X, Ma Y, Zhang S, Li F, Yin Y, Sun Z, Chen X, Yin H. PRMT3-Mediated Arginine Methylation of METTL14 Promotes Malignant Progression and Treatment Resistance in Endometrial Carcinoma. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2023; 10:e2303812. [PMID: 37973560 PMCID: PMC10754120 DOI: 10.1002/advs.202303812] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/11/2023] [Revised: 10/02/2023] [Indexed: 11/19/2023]
Abstract
Protein arginine methyltransferase (PRMT) plays essential roles in tumor initiation and progression, but its underlying mechanisms in the treatment sensitivity of endometrial cancer (EC) remain unclear and warrant further investigation. Here, a comprehensive analysis of the Cancer Genome Atlas database and Clinical Proteomic Tumor Analysis Consortium database identifies that PRMT3 plays an important role in EC. Specifically, further experiments show that PRMT3 inhibition enhances the susceptibility of EC cells to ferroptosis. Mechanistically, PRMT3 interacts with Methyltransferase 14 (METTL14) and is involved in its arginine methylation. In addition, PRMT3 inhibition-mediated METTL14 overexpression promotes methylation modification via an m6 A-YTHDF2-dependent mechanism, reducing Glutathione peroxidase 4 (GPX4) mRNA stability, increasing lipid peroxidation levels, and accelerating ferroptosis. Notably, combined PRMT3 blockade and anti-PD-1 therapy display more potent antitumor effects by accelerating ferroptosis in cell-derived xenograft models. The specific PRMT3 inhibitor SGC707 exerts the same immunotherapeutic sensitizing effect in a patient-derived xenograft model. Notably, blocking PRMT3 improves tumor suppression in response to cisplatin and radiation therapy. Altogether, this work demonstrates that PRMT3 depletion is a promising target for EC.
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Affiliation(s)
- Yiru Wang
- Department of Gynecologic OncologyHarbin Medical University Cancer HospitalHarbinHeilongjiang150000China
| | - Can Wang
- Department of Gynecologic OncologyHarbin Medical University Cancer HospitalHarbinHeilongjiang150000China
| | - Xue Guan
- Animal Laboratory CenterThe Second Affiliated Hospital of Harbin Medical UniversityHarbinHeilongjiang150000China
| | - Ying Ma
- Department of Gynecologic OncologyHarbin Medical University Cancer HospitalHarbinHeilongjiang150000China
| | - Shijie Zhang
- Department of Radiation OncologyHarbin Medical University Cancer HospitalHarbinHeilongjiang150000China
| | - Fei Li
- Department of Gynecologic OncologyHarbin Medical University Cancer HospitalHarbinHeilongjiang150000China
| | - Yue Yin
- Department of Gynecologic OncologyHarbin Medical University Cancer HospitalHarbinHeilongjiang150000China
| | - Zhenxing Sun
- Department of Gynecologic OncologyHarbin Medical University Cancer HospitalHarbinHeilongjiang150000China
| | - Xiuwei Chen
- Department of Gynecologic OncologyHarbin Medical University Cancer HospitalHarbinHeilongjiang150000China
| | - Hang Yin
- Department of Radiation OncologyHarbin Medical University Cancer HospitalHarbinHeilongjiang150000China
- NHC Key Laboratory of Molecular Probes and Targeted Diagnosis and TherapyHarbin Medical UniversityHarbinHeilongjiang150000China
- Department of Health Technology and InformaticsHong Kong Polytechnic UniversityHung HomKowloonHong Kong27665111China
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Meng Y, Yang W, Li J, Chai W. KIAA1429 facilitates progression of hepatocellular carcinoma by modulating m6A levels in HPN. Heliyon 2023; 9:e22084. [PMID: 38058614 PMCID: PMC10695992 DOI: 10.1016/j.heliyon.2023.e22084] [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: 06/06/2023] [Revised: 11/01/2023] [Accepted: 11/03/2023] [Indexed: 12/08/2023] Open
Abstract
Background Most N6-methyladenosine (m6A)-associated modulatory proteins are involved in the pathogenesis of various cancers. The roles of m6A-related genes in liver hepatocellular carcinoma (LIHC) and the associated mechanisms remain unknown. Methods GEO and GEPIA2 databases were used to identify the m6A modification-related genes which were differentially expressed in LIHC and adjacent non-tumor tissues, and quantitative PCR was used to evaluate the expression of KIAA1429, a major m6A methyltransferase, in LIHC cells. The effect of KIAA1429 on the malignant phenotypes of LIHC cells was evaluated in vitro. The UALCAN, GEPIA, and GEO databases and western blotting assays were used to identify the target genes of KIAA1429. Results KIAA1429 expression was markedly elevated in LIHC tissues, and patients with LIHC who had high KIAA1429 expression had a worse prognosis than those who had low expression. KIAA1429 silencing attenuated LIHC metastasis and proliferation. KIAA142 regulates m6A levels in HPN to intensify LIHC progression. Conclusion Our study suggests a KIAA1429-HPN modulatory model based on m6A modifications, that offers insights into the occurrence and development of LIHC.
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Affiliation(s)
- Yu Meng
- The First Department of Hepatobiliary and Pancreatic Surgery, Cangzhou Central Hospital, Cangzhou, China
| | - Wenwen Yang
- The Department of Nursing, Cangzhou Medical College, Cangzhou, China
| | - Jinchao Li
- The First Department of Hepatobiliary and Pancreatic Surgery, Cangzhou Central Hospital, Cangzhou, China
| | - Wei Chai
- The First Department of Hepatobiliary and Pancreatic Surgery, Cangzhou Central Hospital, Cangzhou, China
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Bai Y, Zhao H, Liu H, Wang W, Dong H, Zhao C. RNA methylation, homologous recombination repair and therapeutic resistance. Biomed Pharmacother 2023; 166:115409. [PMID: 37659205 DOI: 10.1016/j.biopha.2023.115409] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2023] [Revised: 08/28/2023] [Accepted: 08/28/2023] [Indexed: 09/04/2023] Open
Abstract
Homologous recombination (HR) repair of DNA double-strand breaks (DSBs) is critical for maintaining genomic integrity and stability. Defects in HR increase the risk of tumorigenesis. However, many human tumors exhibit enhanced HR repair capabilities, consequently endowing tumor cells with resistance to DNA-damaging chemotherapy and radiotherapy. This review summarizes the role of RNA methylation in HR repair and therapeutic resistance in human tumors. We also analyzed the interactions between RNA methylation and other HR-modulating modifications including histone acetylation, histone deacetylation, ubiquitination, deubiquitination, protein arginine methylation, and gene transcription. This review proposes that targeting RNA methylation is a promising approach to overcoming HR-mediated therapeutic resistance.
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Affiliation(s)
- Yu Bai
- Department of Pathophysiology, College of Basic Medical Science, China Medical University, Shenyang, China; Department of Nephrology, Shengjing Hospital of China Medical University, Shenyang, China
| | - Hanlin Zhao
- Department of Ion Channel Pharmacology, School of Pharmacy, China Medical University, Shenyang, China
| | - Haijun Liu
- Department of Thoracic Surgery, Shengjing Hospital of China Medical University, Shenyang, China
| | - Wei Wang
- Department of Pathophysiology, College of Basic Medical Science, China Medical University, Shenyang, China.
| | - Hongming Dong
- Department of Anatomy, College of Basic Medical Science, China Medical University, Shenyang, China.
| | - Chenghai Zhao
- Department of Pathophysiology, College of Basic Medical Science, China Medical University, Shenyang, China.
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