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Prauchner GRK, Ramires Junior OV, Rieder AS, Wyse ATS. Mild hyperhomocysteinemia alters oxidative stress profile via Nrf2, inflammation and cholinesterases in cardiovascular system of aged male rats. Chem Biol Interact 2024; 396:111028. [PMID: 38729282 DOI: 10.1016/j.cbi.2024.111028] [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: 03/04/2024] [Revised: 04/23/2024] [Accepted: 04/29/2024] [Indexed: 05/12/2024]
Abstract
Homocysteine (Hcy) is an independent cardiovascular disease (CVD) risk factor, whose mechanisms are poorly understood. We aimed to explore mild hyperhomocysteinemia (HHcy) effects on oxidative status, inflammatory, and cholinesterase parameters in aged male Wistar rats (365 days old). Rats received subcutaneous Hcy (0.03 μmol/g body weight) twice daily for 30 days, followed by euthanasia, blood collection and heart dissection 12 h after the last injection. Results revealed increased dichlorofluorescein (DCF) levels in the heart and serum, alongside decreased antioxidant enzyme activities (superoxide dismutase, catalase, glutathione peroxidase), reduced glutathione (GSH) content, and diminished acetylcholinesterase (AChE) activity in the heart. Serum butyrylcholinesterase (BuChE) levels also decreased. Furthermore, nuclear factor erythroid 2-related factor 2 (Nrf2) protein content decreased in both cytosolic and nuclear fractions, while cytosolic nuclear factor kappa B (NFκB) p65 increased in the heart. Additionally, interleukins IL-1β, IL-6 and IL-10 showed elevated expression levels in the heart. These findings could suggest a connection between aging and HHcy in CVD. Reduced Nrf2 protein content and impaired antioxidant defenses, combined with inflammatory factors and altered cholinesterases activity, may contribute to understanding the impact of Hcy on cardiovascular dynamics. This study sheds light on the complex interplay between HHcy, oxidative stress, inflammation, and cholinesterases in CVD, providing valuable insights for future research.
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Affiliation(s)
- Gustavo Ricardo Krupp Prauchner
- Laboratory of Neuroprotection and Neurometabolic Diseases, Department of Biochemistry, Wyse's Lab, ICBS, Universidade Federal do Rio Grande do Sul (UFRGS), Rua Ramiro Barcelos, 2600-Anexo, 90035-003, Porto Alegre, RS, Brazil
| | - Osmar Vieira Ramires Junior
- Laboratory of Neuroprotection and Neurometabolic Diseases, Department of Biochemistry, Wyse's Lab, ICBS, Universidade Federal do Rio Grande do Sul (UFRGS), Rua Ramiro Barcelos, 2600-Anexo, 90035-003, Porto Alegre, RS, Brazil
| | - Alessandra Schmitt Rieder
- Laboratory of Neuroprotection and Neurometabolic Diseases, Department of Biochemistry, Wyse's Lab, ICBS, Universidade Federal do Rio Grande do Sul (UFRGS), Rua Ramiro Barcelos, 2600-Anexo, 90035-003, Porto Alegre, RS, Brazil
| | - Angela T S Wyse
- Laboratory of Neuroprotection and Neurometabolic Diseases, Department of Biochemistry, Wyse's Lab, ICBS, Universidade Federal do Rio Grande do Sul (UFRGS), Rua Ramiro Barcelos, 2600-Anexo, 90035-003, Porto Alegre, RS, Brazil.
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Nalawansha DA, Li K, Hines J, Crews CM. Hijacking Methyl Reader Proteins for Nuclear-Specific Protein Degradation. J Am Chem Soc 2022; 144:5594-5605. [DOI: 10.1021/jacs.2c00874] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Dhanusha A. Nalawansha
- Department of Molecular, Cellular and Developmental Biology, Yale University, New Haven, Connecticut 06511, United States
| | - Ke Li
- Department of Molecular, Cellular and Developmental Biology, Yale University, New Haven, Connecticut 06511, United States
| | - John Hines
- Department of Molecular, Cellular and Developmental Biology, Yale University, New Haven, Connecticut 06511, United States
| | - Craig M. Crews
- Department of Molecular, Cellular and Developmental Biology, Yale University, New Haven, Connecticut 06511, United States
- Department of Chemistry, Yale University, New Haven, Connecticut 06511, United States
- Department of Pharmacology, Yale University, New Haven, Connecticut 06511, United States
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Liu J, Wang H, Zheng M, Deng L, Zhang X, Lin B. p53 and ANXA4/NF‑κB p50 complexes regulate cell proliferation, apoptosis and tumor progression in ovarian clear cell carcinoma. Int J Mol Med 2020; 46:2102-2114. [PMID: 33125094 PMCID: PMC7595666 DOI: 10.3892/ijmm.2020.4757] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2020] [Accepted: 07/22/2020] [Indexed: 11/05/2022] Open
Abstract
Annexin IV (ANXA4) is highly expressed in ovarian clear cell carcinoma (OCCC); however, its underlying molecular mechanism in OCCC remains unknown. The present study aimed to identify the molecule that ANXA4 may act on and to determine its underlying molecular mechanism. Immunohistochemistry, co‑immunoprecipitation and western blotting were performed to detect the expression and interaction of ANXA4, and its associated proteins. Furthermore, MTT assay, flow cytometry, western blotting and gene expression profile enrichment analysis were performed to identify the potential role and molecular mechanism of ANXA4 in OCCC. The results demonstrated that ANXA4 and nuclear factor‑κ‑light‑chain‑enhancer of activated B cells (NF‑κB) p50 nuclear expression levels were significantly higher in OCCC tissues compared with other subtypes of ovarian cancer, such as serous and mucinous. In addition, a significantly positive correlation was observed between ANXA4 and NF‑κB p50 expression in OCCC; however, the expression levels of mutant p53 and ANXA4 were negatively correlated in a linear manner. These results suggest that ANXA4 and NF‑κB p50 may be potential independent risk factors for poor prognosis. ANXA4 and NF‑κB p50 were demonstrated to interact and their expression was co‑localized. The cBioPortal database was used to construct a protein‑protein interaction network between ANXA4, NF‑κB p50 and p53, and functional pathway analysis indicated that the genes were predominantly enriched in the cell cycle and during apoptosis. Transfection of the ANXA4 gene increased the expression of NF‑κB p50, as well as its downstream targets, Cyclin D1 and B‑cell lymphoma‑2 (Bcl‑2). Furthermore, transfection of the ANXA4 gene increased proliferation and decreased apoptosis of OCCC cells. Treatment with the NF‑κB inhibitor, BAY 11‑7082, decreased Cyclin D1 and Bcl‑2 expression levels. Collectively, the results of the present study suggest that wild p53 activates ANXA4 transcription, promotes its expression and enhances NF‑κB p50 and ANXA4 interaction. This in turn activates the NF‑κB signaling pathway, promotes cell cycle progression and inhibits apoptosis, thus contributing to the malignant progression of OCCC. Thus, ANXA4 and NF‑κB p50 may be used as prognostic biomarkers, and may be molecular therapeutic targets in OCCC.
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Affiliation(s)
- Juanjuan Liu
- Department of Obstetrics and Gynecology, Shengjing Hospital of China Medical University, Shenyang, Liaoning 110004, P.R. China
| | - Huimin Wang
- Department of Obstetrics and Gynecology, Shengjing Hospital of China Medical University, Shenyang, Liaoning 110004, P.R. China
| | - Mingjun Zheng
- Department of Obstetrics and Gynecology, Shengjing Hospital of China Medical University, Shenyang, Liaoning 110004, P.R. China
| | - Lu Deng
- Department of Obstetrics and Gynecology, Shengjing Hospital of China Medical University, Shenyang, Liaoning 110004, P.R. China
| | - Xue Zhang
- Department of Obstetrics and Gynecology, Shengjing Hospital of China Medical University, Shenyang, Liaoning 110004, P.R. China
| | - Bei Lin
- Department of Obstetrics and Gynecology, Shengjing Hospital of China Medical University, Shenyang, Liaoning 110004, P.R. China
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Sex Differences of Human Cardiac Progenitor Cells in the Biological Response to TNF- α Treatment. Stem Cells Int 2017; 2017:4790563. [PMID: 29104594 PMCID: PMC5623773 DOI: 10.1155/2017/4790563] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2017] [Revised: 06/09/2017] [Accepted: 06/14/2017] [Indexed: 01/25/2023] Open
Abstract
Adult cardiac progenitor cells (CPCs), isolated as cardiosphere-derived cells (CDCs), represent promising candidates for cardiac regenerative therapy. CDCs can be expanded in vitro manyfolds without losing their differentiation potential, reaching numbers that are appropriate for clinical applications. Since mechanisms of successful CDC survival and engraftment in the damaged myocardium are still critical and unresolved issues, we aimed at deciphering possible key factors capable of bolstering CDC function. In particular, the response and the phenotype of CDCs exposed to low concentrations of the multifunctional cytokine tumor necrosis factor α (TNF-α), known to be capable of activating cell survival pathways, have been investigated. Furthermore, differential biological responses of CDCs from male and female donors, in terms of cell cycle progression and cell spreading, have also been assessed. The results obtained indicate that (i) the intracellular signaling activated in our experimental conditions is most likely due to the prosurvival and proliferative signaling of TNF-α receptor 2 and that (ii) cells from female patients appear more responsive to TNF-α treatment in terms of cell cycle progression and migration ability. In conclusion, the present report highlights the hypothesis that TNF-stimulated CDCs isolated from females may represent a promising candidate for cardiac regenerative therapy applications.
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Wang Z, Zhai Z, Du X. Celastrol inhibits migration and invasion through blocking the NF-κB pathway in ovarian cancer cells. Exp Ther Med 2017; 14:819-824. [PMID: 28673005 DOI: 10.3892/etm.2017.4568] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2016] [Accepted: 03/10/2017] [Indexed: 12/16/2022] Open
Abstract
Metastatic ovarian cancer is a major clinical challenge with poor prognosis and high mortality. Celastrol is a natural compound that has exhibits antiproliferative activity; however, its effects on metastasis-related phenotypes in ovarian cancer models are unclear. In the current study, the anti-invasive activities and associated signaling pathways of celastrol were determined in ovarian cancer cells. Cell proliferation was tested by MTT assay. Cell migration was detected by wound healing and Transwell assays, while cell invasion was detected by a Matrigel-coated Transwell method. In addition, nuclear factor (NF)-κB and matrix metalloproteinase (MMP) expression was examined by western blotting, and MMP-2/-9 activities were determined by gelatin zymography. At sub-toxic concentrations (<0.5 µM), celastrol inhibited migration and invasion in a concentration-dependent manner in SKOV-3 and OVCAR-3 cells. At the molecular level, celastrol blocked the canonical NF-κB pathway by inhibiting IκBα phosphorylation, and preventing IκBα degradation and p65 accumulation. Furthermore, the expression and activity of the NF-κB target protein MMP-9, but not MMP-2, were inhibited by celastrol. Furthermore, celastrol showed no synergistic effect with MG132, an NF-κB inhibitor. In conclusion, celastrol exhibited significant anti-invasive activities in ovarian cancer cells. Such functions may be mediated via NF-κB pathway blockade. The results of this in vitro study strengthen the value of applying celastrol as a potential clinical intervention modality for delaying ovarian cancer metastasis. This, celastrol warrants further preclinical investigation.
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Affiliation(s)
- Zhongye Wang
- Department of Obstetrics and Gynecology, Weihai Central Hospital, Weihai, Shandong 264400, P.R. China
| | - Zhenyuan Zhai
- Department of Obstetrics and Gynecology, Weihai Central Hospital, Weihai, Shandong 264400, P.R. China
| | - Xiulan Du
- Department of Obstetrics and Gynecology, Weihai Central Hospital, Weihai, Shandong 264400, P.R. China
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Iwai-Shimada M, Takahashi T, Kim MS, Fujimura M, Ito H, Toyama T, Naganuma A, Hwang GW. Methylmercury induces the expression of TNF-α selectively in the brain of mice. Sci Rep 2016; 6:38294. [PMID: 27910896 PMCID: PMC5133575 DOI: 10.1038/srep38294] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2016] [Accepted: 11/07/2016] [Indexed: 01/01/2023] Open
Abstract
Methylmercury selectively damages the central nervous system (CNS). The tumor necrosis factor (TNF) superfamily includes representative cytokines that participate in the inflammatory response as well as cell survival, and apoptosis. In this study, we found that administration of methylmercury selectively induced TNF-α expression in the brain of mice. Although the accumulated mercury concentration in the liver and kidneys was greater than in the brain, TNF-α expression was induced to a greater extent in brain. Thus, it is possible that there may exist a selective mechanism by which methylmercury induces TNF-α expression in the brain. We also found that TNF-α expression was induced by methylmercury in C17.2 cells (mouse neural stem cells) and NF-κB may participate as a transcription factor in that induction. Further, we showed that the addition of TNF-α antagonist (WP9QY) reduced the toxicity of methylmercury to C17.2 cells. In contrast, the addition of recombinant TNF-α to the culture medium decreased the cell viability. We suggest that TNF-α may play a part in the selective damage of the CNS by methylmercury. Furthermore, our results indicate that the higher TNF-α expression induced by methylmercury maybe the cause of cell death, as TNF-α binds to its receptor after being released extracellularly.
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Affiliation(s)
- Miyuki Iwai-Shimada
- Laboratory of Molecular and Biochemical Toxicology, Graduate School of Pharmaceutical Sciences, Tohoku University, Sendai 980-8578, Japan.,Center for Health and Environmental Risk Research, National Institute for Environmental Studies, Onogawa16-2, Tsukuba, Ibaraki 305-8506, Japan
| | - Tsutomu Takahashi
- Laboratory of Molecular and Biochemical Toxicology, Graduate School of Pharmaceutical Sciences, Tohoku University, Sendai 980-8578, Japan.,School of Pharmacy, Tokyo University of Pharmacy and Life Sciences, 1432-1 Horinouchi, Hachioji, Tokyo 192-0232, Japan
| | - Min-Seok Kim
- Laboratory of Molecular and Biochemical Toxicology, Graduate School of Pharmaceutical Sciences, Tohoku University, Sendai 980-8578, Japan.,Department of Inhalation Toxicology Research, Korea Institute of Toxicology, Jeonbuk 56212, Republic of Korea
| | - Masatake Fujimura
- Department of Basic Medical Science, National Institute for Minamata Disease, Kumamoto 867-0008, Japan
| | - Hitoyasu Ito
- Department of Informative Clinical Medicine, Gifu University Graduate School of Medicine, 1-1 Yanagido, Gifu 501-1194, Japan
| | - Takashi Toyama
- Laboratory of Molecular and Biochemical Toxicology, Graduate School of Pharmaceutical Sciences, Tohoku University, Sendai 980-8578, Japan
| | - Akira Naganuma
- Laboratory of Molecular and Biochemical Toxicology, Graduate School of Pharmaceutical Sciences, Tohoku University, Sendai 980-8578, Japan
| | - Gi-Wook Hwang
- Laboratory of Molecular and Biochemical Toxicology, Graduate School of Pharmaceutical Sciences, Tohoku University, Sendai 980-8578, Japan
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Zhang Z, Song X, Feng X, Miao Y, Wang H, Li Y, Tian H. Norcantharidin modulates miR-655-regulated SENP6 protein translation to suppresses invasion of glioblastoma cells. Tumour Biol 2015; 37:10.1007/s13277-015-4447-2. [PMID: 26608369 DOI: 10.1007/s13277-015-4447-2] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2015] [Accepted: 11/16/2015] [Indexed: 12/27/2022] Open
Abstract
Norcantharidin (NCTD) is currently used as an anticancer drug for the treatment of some malignant cancers. However, whether it may have therapeutic effects on glioblastoma multiforme (GBM) remains unknown. Moreover, the underlying mechanisms have not been completely elucidated. Recently, SUMO-specific protease 6 (SENP6) has been shown as a tumor suppressor in some cancers. Nevertheless, whether it is involved in the pathogenesis of GBM has not been examined. Here, we studied the effects of NCTD on GBM cells. We found that NCTD dose-dependently increased SENP6 protein, but not messenger RNA (mRNA), in GBM cells, resulting in the suppression of cell invasion. Depletion of SENP6 in GBM cells significantly attenuated the NCTD-induced suppression of GBM cell invasion, while overexpression of SENP6 in GBM cells mimicked the effects of NCTD on cell invasion. Moreover, NCTD dose-dependently decreased the levels of microRNA-655 (miR-655), which bound to 3'-UTR of SENP6 mRNA to inhibit its translation. Overexpression of miR-655 decreased SENP6 in GBM cells, while depletion of miR-655 increased SENP6 protein in GBM cells. Taken together, our data demonstrates a previously unappreciated control of NCTD to suppress GBM cell invasion through modulation of miR-655-regulated SENP6 protein translation.
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Affiliation(s)
- Zhenxing Zhang
- Department of Neurosurgery, The First Affiliated Hospital of Liaoning Medical University, Jinzhou, 121001, China
| | - Xiaofeng Song
- Department of Histology and Embryology, Liaoning Medical University, 3-40 Songpo Road, Jinzhou, 121001, China.
| | - Xu Feng
- Department of Neurosurgery, The First Affiliated Hospital of Liaoning Medical University, Jinzhou, 121001, China
| | - Ye Miao
- Department of Neurosurgery, The First Affiliated Hospital of Liaoning Medical University, Jinzhou, 121001, China
| | - Honglei Wang
- Department of Neurosurgery, The First Affiliated Hospital of Liaoning Medical University, Jinzhou, 121001, China
| | - Yang Li
- Department of Neurosurgery, The First Affiliated Hospital of Liaoning Medical University, Jinzhou, 121001, China
| | - He Tian
- Department of Histology and Embryology, Liaoning Medical University, 3-40 Songpo Road, Jinzhou, 121001, China
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