1
|
Costa RM, Dias MC, Alves JV, Silva JLM, Rodrigues D, Silva JF, Francescato HDC, Ramalho LNZ, Coimbra TM, Tostes RC. Pharmacological activation of nuclear factor erythroid 2-related factor-2 prevents hyperglycemia-induced renal oxidative damage: Possible involvement of O-GlcNAcylation. Biochem Pharmacol 2024; 220:115982. [PMID: 38097051 DOI: 10.1016/j.bcp.2023.115982] [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: 10/19/2023] [Revised: 12/06/2023] [Accepted: 12/08/2023] [Indexed: 12/20/2023]
Abstract
Hyperglycemia is a major risk factor for kidney diseases. Oxidative stress, caused by reactive oxygen species, is a key factor in the development of kidney abnormalities related to hyperglycemia. The nuclear factor erythroid 2-related factor-2 (Nrf2) plays a crucial role in defending cells against oxidative stress by activating genes that produce antioxidants. L-sulforaphane (SFN), a drug that activates Nrf2, reduces damage caused by hyperglycemia. Hyperglycemic Wistar rats and HEK 293 cells maintained in hyperglycemic medium exhibited decreased Nrf2 nuclear translocation and reduced expression and activity of antioxidant enzymes. SFN treatment increased Nrf2 activity and reversed decreased renal function, oxidative stress and cell death associated with hyperglycemia. To investigate mechanisms involved in hyperglycemia-induced reduced Nrf2 activity, we addressed whether Nrf2 is modified by O-linked β-N-acetylglucosamine (O-GlcNAc), a post-translational modification that is fueled in hyperglycemic conditions. In vivo, hyperglycemia increased O-GlcNAc-modified Nrf2 expression. Increased O-GlcNAc levels, induced by pharmacological inhibition of OGA, decreased Nrf2 activity in HEK 293 cells. In conclusion, hyperglycemia reduces Nrf2 activity, promoting oxidative stress, cell apoptosis and structural and functional renal damage. Pharmacological treatment with SFN attenuates renal injury. O-GlcNAcylation negatively modulates Nrf2 activity and represents a potential mechanism leading to oxidative stress and renal damage in hyperglycemic conditions.
Collapse
Affiliation(s)
- Rafael M Costa
- Institute of Health Sciences, Federal University of Jatai, Jatai, GO, Brazil; Department of Pharmacology, Ribeirao Preto Medical School, University of Sao Paulo, Ribeirao Preto, SP, Brazil.
| | - Mayara C Dias
- Institute of Health Sciences, Federal University of Jatai, Jatai, GO, Brazil
| | - Juliano V Alves
- Institute of Health Sciences, Federal University of Jatai, Jatai, GO, Brazil; Department of Pharmacology, Ribeirao Preto Medical School, University of Sao Paulo, Ribeirao Preto, SP, Brazil
| | - João Lucas M Silva
- Institute of Health Sciences, Federal University of Jatai, Jatai, GO, Brazil
| | - Daniel Rodrigues
- Department of Pharmacology, Ribeirao Preto Medical School, University of Sao Paulo, Ribeirao Preto, SP, Brazil
| | - Josiane F Silva
- Department of Pharmacology, Ribeirao Preto Medical School, University of Sao Paulo, Ribeirao Preto, SP, Brazil
| | - Heloísa D C Francescato
- Department of Physiology, Ribeirao Preto Medical School, University of Sao Paulo, Ribeirao Preto, SP, Brazil
| | - Leandra N Z Ramalho
- Department of Pathology, Ribeirao Preto Medical School, University of Sao Paulo, Ribeirao Preto, SP, Brazil
| | - Terezila M Coimbra
- Department of Physiology, Ribeirao Preto Medical School, University of Sao Paulo, Ribeirao Preto, SP, Brazil
| | - Rita C Tostes
- Department of Pharmacology, Ribeirao Preto Medical School, University of Sao Paulo, Ribeirao Preto, SP, Brazil.
| |
Collapse
|
2
|
Relaxin inhibits 177Lu-EDTMP associated cell death in osteosarcoma cells through notch-1 pathway. ACTA PHARMACEUTICA (ZAGREB, CROATIA) 2022; 72:575-585. [PMID: 36651368 DOI: 10.2478/acph-2022-0032] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Accepted: 02/20/2022] [Indexed: 01/25/2023]
Abstract
177Lu-EDTMP (Ethylenediamine tetramethylene phosphonic acid) is the most used radioactive agent for pain palliation in bone cancer patients. The present study aims to study the impact of relaxin-2 on the 177Lu-EDTMP associated cell toxicity and death in osteosarcoma cells. MG63 and Saos-2 cells were cultured with 177Lu-EDTMP (37 MBq) for 24 h with and without pretreatment of recombinant relaxin 2 (RLXH2) for 12 and 24 h. 177Lu-EDTMP associated cellular deterioration and death was determined by LDH, MTT, and trypan blue dye assays. ELISA-based kit was used to determine apoptotic DNA fragmentation. Western blotting was used to determine expression levels of apoptotic-related signalling pathway proteins like bcl2, poly(ADP-ribose) polymerase (PARP), and MAPK (mitogen-activated protein kinase). Our results found that RLXH2 counters 177Lu-EDTMP associated cellular toxicity. Similarly, RLXH2 was able to counter 177Lu-EDTMP induced cell death in a concentration and time--dependent manner. Furthermore, it was found that RLXH2 treatment prevents apoptosis in 177Lu-EDTMP challenged cells through activation of the notch-1 pathway in a concentration- and time-dependent manner. We reported that RLXH2 significantly declined cellular toxicity and apoptosis associated with 177Lu-EDTMP in MG63 and Saos-2 cells through the notch-1 pathway.
Collapse
|
3
|
Ishida K, Seki A, Kawaguchi K, Nasti A, Yamato M, Inui H, Komura T, Yamashita T, Arai K, Yamashita T, Mizukoshi E, Honda M, Wada T, Harada K, Kaneko S, Sakai Y. Restorative effect of adipose tissue-derived stem cells on impaired hepatocytes through Notch signaling in non-alcoholic steatohepatitis mice. Stem Cell Res 2021; 54:102425. [PMID: 34119957 DOI: 10.1016/j.scr.2021.102425] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/21/2020] [Revised: 04/11/2021] [Accepted: 06/02/2021] [Indexed: 02/06/2023] Open
Abstract
Adipose tissue-derived stem cells (ADSCs) have been suggested as a novel treatment for non-alcoholic steatohepatitis (NASH); however, the mechanisms underlying their therapeutic effect remain poorly understood. In this study, we aimed to investigate the association of Notch signaling, which is crucial for cellular proliferation and differentiation in ADSC-mediated treatment of NASH. Flow cytometry analysis of ADSCs showed that they expressed the Notch ligands JAG1, DLL1, and DLL4. The expression of genes associated with the Notch signaling pathway was attenuated in hepatocytes of NASH model mice. We further observed ADSC-mediated activation of Notch signaling in these hepatocytes in addition to an increase in proliferating cell nuclear antigen+ cells and a decrease in TdT-mediated dUTP-biotin nick end labeling+ apoptotic cells. Co-culture of palmitic acid-induced steatotic hepatocytes and ADSCs resulted in the activation of Notch signaling and reduction of apoptosis of steatotic hepatocytes. Moreover, inhibition of Notch signaling by a γ-secretase inhibitor and knockdown of Notch ligands using siRNA attenuated the anti-apoptotic effect of co-cultured ADSCs in vitro. Our findings show that the Notch signaling pathway is involved in the inhibition of apoptosis and restoration of cellular proliferation of hepatocytes from NASH mice following ADSC treatment.
Collapse
Affiliation(s)
- Kosuke Ishida
- System Biology, Graduate School of Advanced Preventive Medical Sciences, Kanazawa University, Kanazawa, Japan
| | - Akihiro Seki
- Department of Gastroenterology, Kanazawa University Hospital, Kanazawa, Japan
| | - Kazunori Kawaguchi
- Department of Gastroenterology, Kanazawa University Hospital, Kanazawa, Japan
| | - Alessandro Nasti
- System Biology, Graduate School of Advanced Preventive Medical Sciences, Kanazawa University, Kanazawa, Japan
| | - Masatoshi Yamato
- Department of Disease Control and Homeostasis, College of Medical Pharmaceutical and Health Sciences, Kanazawa University, Kanazawa, Japan
| | - Hiiro Inui
- System Biology, Graduate School of Advanced Preventive Medical Sciences, Kanazawa University, Kanazawa, Japan
| | - Takuya Komura
- Department of Gastroenterology, National Hospital Organization Kanazawa Medical Center, Kanazawa, Japan
| | - Taro Yamashita
- Department of General Medicine, Kanazawa University Hospital, Kanazawa, Japan
| | - Kuniaki Arai
- Department of Gastroenterology, Kanazawa University Hospital, Kanazawa, Japan
| | - Tatsuya Yamashita
- Department of Gastroenterology, Kanazawa University Hospital, Kanazawa, Japan
| | - Eishiro Mizukoshi
- Department of Gastroenterology, Kanazawa University Hospital, Kanazawa, Japan
| | - Masao Honda
- Department of Gastroenterology, Kanazawa University Hospital, Kanazawa, Japan
| | - Takashi Wada
- Department of Nephrology and Laboratory Medicine, Kanazawa University, Kanazawa, Japan
| | - Kenichi Harada
- Department of Human Pathology, Kanazawa University, Kanazawa, Japan
| | - Shuichi Kaneko
- System Biology, Graduate School of Advanced Preventive Medical Sciences, Kanazawa University, Kanazawa, Japan; Department of Gastroenterology, Kanazawa University Hospital, Kanazawa, Japan; Department of Disease Control and Homeostasis, College of Medical Pharmaceutical and Health Sciences, Kanazawa University, Kanazawa, Japan
| | - Yoshio Sakai
- Department of Gastroenterology, Kanazawa University Hospital, Kanazawa, Japan.
| |
Collapse
|
4
|
Taqi MO, Saeed-Zidane M, Gebremedhn S, Salilew-Wondim D, Tholen E, Neuhoff C, Hoelker M, Schellander K, Tesfaye D. NRF2-mediated signaling is a master regulator of transcription factors in bovine granulosa cells under oxidative stress condition. Cell Tissue Res 2021; 385:769-783. [PMID: 34008050 PMCID: PMC8526460 DOI: 10.1007/s00441-021-03445-4] [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: 03/23/2020] [Accepted: 03/01/2021] [Indexed: 11/30/2022]
Abstract
Transcription factors (TFs) are known to be involved in regulating the expression of several classes of genes during folliculogenesis. However, the regulatory role of TFs during oxidative stress (OS) is not fully understood. The current study was aimed to investigate the regulation of the TFs in bovine granulosa cells (bGCs) during exposure to OS induced by H2O2 in vitro. For this, bGCs derived from ovarian follicles were cultured in vitro till their confluency and then treated with H2O2 for 40 min. Twenty-four hours later, cells were subjected to various phenotypic and gene expression analyses for genes related to TFs, endoplasmic reticulum stress, apoptosis, cell proliferation, and differentiation markers. The bGCs exhibited higher reactive oxygen species accumulation, DNA fragmentation, and endoplasmic reticulum stress accompanied by reduction of mitochondrial activity after exposure to OS. In addition, higher lipid accumulation and lower cell proliferation were noticed in H2O2-challenged cells. The mRNA level of TFs including NRF2, E2F1, KLF6, KLF9, FOS, SREBF1, SREBF2, and NOTCH1 was increased in H2O2-treated cells compared with non-treated controls. However, the expression level of KLF4 and its downstream gene, CCNB1, were downregulated in the H2O2-challenged group. Moreover, targeted inhibition of NRF2 using small interference RNA resulted in reduced expression of KLF9, FOS, SREBF2, and NOTCH1 genes, while the expression of KLF4 was upregulated. Taken together, bovine granulosa cells exposed to OS exhibited differential expression of various transcription factors, which are mediated by the NRF2 signaling pathway.
Collapse
Affiliation(s)
- Mohamed Omar Taqi
- Institute of Animal Science, Animal Breeding and Husbandry Group, University of Bonn, Bonn, Germany.,Central Laboratory for Agricultural Climate, Agricultural Research Center, Giza, Egypt
| | - Mohammed Saeed-Zidane
- Institute of Animal Science, Animal Breeding and Husbandry Group, University of Bonn, Bonn, Germany.,Institute of Animal Breeding and Husbandry, Animal Breeding and Genetics Group, University of Kiel, Kiel, Germany
| | - Samuel Gebremedhn
- Institute of Animal Science, Animal Breeding and Husbandry Group, University of Bonn, Bonn, Germany.,Department of Biomedical Sciences, Animal Reproduction and Biotechnology Laboratory (ARBL), Colorado State University, Fort Collins, CO, USA
| | - Dessie Salilew-Wondim
- Institute of Animal Science, Animal Breeding and Husbandry Group, University of Bonn, Bonn, Germany
| | - Ernst Tholen
- Institute of Animal Science, Animal Breeding and Husbandry Group, University of Bonn, Bonn, Germany
| | - Christiane Neuhoff
- Institute of Animal Science, Animal Breeding and Husbandry Group, University of Bonn, Bonn, Germany
| | - Michael Hoelker
- Institute of Animal Science, Animal Breeding and Husbandry Group, University of Bonn, Bonn, Germany.,Teaching and Research Station Frankenforst, University of Bonn, Koenigswinter, Germany
| | - Karl Schellander
- Institute of Animal Science, Animal Breeding and Husbandry Group, University of Bonn, Bonn, Germany
| | - Dawit Tesfaye
- Institute of Animal Science, Animal Breeding and Husbandry Group, University of Bonn, Bonn, Germany. .,Department of Biomedical Sciences, Animal Reproduction and Biotechnology Laboratory (ARBL), Colorado State University, Fort Collins, CO, USA.
| |
Collapse
|
5
|
Hwang JS, Ma DJ, Choi J, Shin YJ. COL8A2 Regulates the Fate of Corneal Endothelial Cells. Invest Ophthalmol Vis Sci 2021; 61:26. [PMID: 32931574 PMCID: PMC7500139 DOI: 10.1167/iovs.61.11.26] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Abstract
Purpose To investigate the effect of COL8A2 repression on corneal endothelial cells (CECs) in vitro and in vivo. Methods Cultured human CECs (hCECs) were transfected with COL8A2 siRNA (siCOL8A2), and the cell viability and proliferation rate were measured. The expression of cell proliferation–associated molecules was evaluated by Western blotting and real-time reverse transcription PCR. Cell shape, Wingless-INT (WNT) signaling, and mitochondrial oxidative stress were also measured. For in vivo experiments, siCOL8A2 was transfected into rat CECs (rCECs), and corneal opacity and corneal endothelium were evaluated. Results After transfection with siCOL8A2, COL8A2 expression was reduced (80%). Cell viability, cell proliferation rate, cyclin D1 expression, and the number of cells in the S-phase were reduced in siCOL8A2-treated cells. The cell attained a fibroblast-like shape, and SNAI1, pSMAD2, and β-catenin expression, along with mitochondrial mass and oxidative stress levels, were altered. Corneal opacity increased, and the CECs were changed in rats in the siCOL8A2 group. Conclusions COL8A2 is required to maintain normal wound healing and CEC function.
Collapse
Affiliation(s)
- Jin Sun Hwang
- Department of Ophthalmology, Hallym University Medical Center, Hallym University College of Medicine, Seoul, Republic of Korea
| | - Dae Joong Ma
- Department of Ophthalmology, Hallym University Medical Center, Hallym University College of Medicine, Seoul, Republic of Korea
| | - Jinju Choi
- Department of Ophthalmology, Hallym University Medical Center, Hallym University College of Medicine, Seoul, Republic of Korea
| | - Young Joo Shin
- Department of Ophthalmology, Hallym University Medical Center, Hallym University College of Medicine, Seoul, Republic of Korea
| |
Collapse
|
6
|
Dysregulated Immune Responses by ASK1 Deficiency Alter Epithelial Progenitor Cell Fate and Accelerate Metaplasia Development during H. pylori Infection. Microorganisms 2020; 8:microorganisms8121995. [PMID: 33542169 PMCID: PMC7765114 DOI: 10.3390/microorganisms8121995] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2020] [Revised: 12/11/2020] [Accepted: 12/11/2020] [Indexed: 02/06/2023] Open
Abstract
The mechanism of H. pylori-induced atrophy and metaplasia has not been fully understood. Here, we demonstrate the novel role of Apoptosis signal-regulating kinase 1 (ASK1) and downstream MAPKs as a regulator of host immune responses and epithelial maintenance against H. pylori infection. ASK1 gene deficiency resulted in enhanced inflammation with numerous inflammatory cells including Gr-1+CD11b+ myeloid-derived suppressor cells (MDSCs) recruited into the infected stomach. Increase of IL-1β release from apoptotic macrophages and enhancement of TH1-polarized immune responses caused STAT1 and NF-κB activation in epithelial cells in ASK1 knockout mice. Dysregulated immune and epithelial activation in ASK1 knockout mice led to dramatic expansion of gastric progenitor cells and massive metaplasia development. Bone marrow transplantation experiments revealed that ASK1 in inflammatory cells is critical for inducing immune disorder and metaplastic changes in epithelium, while ASK1 in epithelial cells regulates cell proliferation in stem/progenitor zone without changes in inflammation and differentiation. These results suggest that H. pylori-induced immune cells may regulate epithelial homeostasis and cell fate as an inflammatory niche via ASK1 signaling.
Collapse
|
7
|
Huang J, Qi Z. MiR-21 mediates the protection of kaempferol against hypoxia/reoxygenation-induced cardiomyocyte injury via promoting Notch1/PTEN/AKT signaling pathway. PLoS One 2020; 15:e0241007. [PMID: 33151961 PMCID: PMC7644004 DOI: 10.1371/journal.pone.0241007] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2020] [Accepted: 10/06/2020] [Indexed: 12/14/2022] Open
Abstract
Kaempferol, a natural flavonoid compound, possesses potent myocardial protective property in ischemia/reperfusion (I/R), but the underlying mechanism is not well understood. The present study was aimed to explore whether miR-21 contributes to the cardioprotective effect of kaempferol on hypoxia/reoxygenation (H/R)-induced H9c2 cell injury via regulating Notch/phosphatase and tensin homologue (PTEN)/Akt signaling pathway. Results revealed that kaempferol obviously attenuates H/R-induced the damages of H9c2 cells as evidence by the up-regulation of cell viability, the down-regulation of lactate dehydrogenase (LDH) activity, the reduction of apoptosis rate and pro-apoptotic protein (Bax) expression, and the increases of anti-apoptotic protein (Bcl-2) expression. In addition, kaempferol enhanced miR-21 level in H9c2 cells exposed to H/R, and inhibition of miR-21 induced by transfection with miR-21 inhibitor significantly blocked the protection of kaempferol against H/R-induced H9c2 cell injury. Furthermore, kaempferol eliminated H/R-induced oxidative stress and inflammatory response as illustrated by the decreases in reactive oxygen species generation and malondialdehyde content, the increases in antioxidant enzyme superoxide dismutase and glutathione peroxidase activities, the decreases in pro-inflammatory cytokines interleukin (IL)-1β, IL-8 and tumor necrosis factor-alpha levels, and an increase in anti-inflammatory cytokine IL-10 level, while these effects of kaempferol were all reversed by miR-21 inhibitor. Moreover, results elicited that kaempferol remarkably blocks H/R-induced the down-regulation of Notch1 expression, the up-regulation of PTEN expression, and the reduction of P-Akt/Akt, indicating that kaempferol promotes Notch1/PTEN/AKT signaling pathway, and knockdown of Notch1/PTEN/AKT signaling pathway induced by Notch1 siRNA also abolished the protection of kaempferol against H/R-induced the damage of H9c2 cells. Notably, miR-21 inhibitor alleviated the promotion of kaempferol on Notch/PTEN/Akt signaling pathways in H9c2 cells exposed to H/R. Taken together, these above findings suggested thatmiR-21 mediates the protection of kaempferol against H/R-induced H9c2 cell injuryvia promoting Notch/PTEN/Akt signaling pathway.
Collapse
Affiliation(s)
- Jinxi Huang
- Department of Cardiology, Shanxi Provincial People's Hospital, Taiyuan, Shanxi, P.R. China
- * E-mail:
| | - Zhenhui Qi
- Department of Cardiology, Shanxi Provincial People's Hospital, Taiyuan, Shanxi, P.R. China
| |
Collapse
|
8
|
Air Particulate Matter Induces Skin Barrier Dysfunction and Water Transport Alteration on a Reconstructed Human Epidermis Model. J Invest Dermatol 2020; 140:2343-2352.e3. [PMID: 32339540 DOI: 10.1016/j.jid.2020.03.971] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2018] [Revised: 03/24/2020] [Accepted: 03/31/2020] [Indexed: 12/19/2022]
Abstract
Knowing the damage that particulate matter (PM) can cause in skin is important for tightly controlling the release of air pollutants and preventing more serious diseases. This study investigates if such alterations are present in reconstructed human epidermis exposed to coarse air PM. Exposure of reconstructed human epidermis to increasing concentrations (2.2, 8.9, and 17.9 μg/cm2) of standard urban PM over time led to decreased cell viability at 48 hours. The barrier function was shown to be compromised by 24 hours of exposure to high doses (17.9 μg/cm2). Morphological alterations included cytoplasm vacuolization and partial loss of epidermal stratification. Cytokeratin 10, involucrin, loricrin, and filaggrin protein levels were significantly decreased. We confirmed an inflammatory process by IL-1α release and found a significant increase in AQP3 expression. We also demonstrated changes in NOTCH1 and AhR expression of epidermis treated with coarse air PM. The use of hydrogen peroxide altered AQP3 and NOTCH1 expression, and the use of N-acetyl-L-cysteine altered NOTCH1 expression, suggesting that this is a redox-dependent process. These results demonstrate that coarse air PM induces dose-dependent inflammatory response and alterations in protein markers of differentiation and water transport in the epidermis that could ultimately compromise the structural integrity of the skin, promoting or exacerbating various skin diseases.
Collapse
|
9
|
Song YJ, Shi Y, Cui MM, Li M, Wen XR, Zhou XY, Lou HQ, Wang YL, Qi DS, Tang M, Zhang XB. H 2S attenuates injury after ischemic stroke by diminishing the assembly of CaMKII with ASK1-MKK3-p38 signaling module. Behav Brain Res 2020; 384:112520. [PMID: 32006563 DOI: 10.1016/j.bbr.2020.112520] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2019] [Revised: 01/10/2020] [Accepted: 01/29/2020] [Indexed: 10/25/2022]
Abstract
Cerebral ischemia/reperfusion (I/R) injury is a leading cause of learning and memory dysfunction. Hydrogen sulfide (H2S) has been shown to confer neuroprotection in various neurodegenerative diseases, including cerebral I/R-induced hippocampal CA1 injury. However, the underlying mechanisms have not been completely understood. In the present study, rats were pretreated with SAM/NaHS (SAM, an H2S agonist, and NaHS, an H2S donor) only or SAM/NaHS combined with CaM (an activator of CaMKII) prior to cerebral ischemia. The Morris water maze test demonstrated that SAM/NaHS could alleviate learning and memory impairment induced by cerebral I/R injury. Cresyl violet staining was used to show the survival of hippocampal CA1 pyramidal neurons. SAM/NaHS significantly increased the number of surviving cells, whereas CaM weakened the protection induced by SAM/NaHS. The immunohistochemistry results indicated that the number of Iba1-positive microglia significantly increased after cerebral I/R. Compared with the I/R group, the number of Iba1-positive microglia in the SAM/NaHS groups significantly decreased. Co-Immunoprecipitation and immunoblotting were conducted to demonstrate that SAM/NaHS suppressed the assembly of CaMKII with the ASK1-MKK3-p38 signal module after cerebral I/R, which decreased the phosphorylation of p38. In contrast, CaM significantly inhibited the effects of SAM/NaHS. Taken together, the results suggested that SAM/NaHS could suppress cerebral I/R injury by downregulating p38 phosphorylation via decreasing the assembly of CaMKII with the ASK1-MKK3-p38 signal module.
Collapse
Affiliation(s)
- Yuan-Jian Song
- Department of Genetics, Xuzhou Medical University, Xuzhou, Jiangsu 221004, PR China; Jiangsu Key Laboratory of Brain Disease Bioinformation, Xuzhou Medical University, Xuzhou, Jiangsu 221004, PR China
| | - Yue Shi
- Jiangsu Key Laboratory of Brain Disease Bioinformation, Xuzhou Medical University, Xuzhou, Jiangsu 221004, PR China; School of Public Health, Xuzhou Medical University, Xuzhou, Jiangsu 221004, PR China
| | - Miao-Miao Cui
- Department of Genetics, Xuzhou Medical University, Xuzhou, Jiangsu 221004, PR China; Jiangsu Key Laboratory of Brain Disease Bioinformation, Xuzhou Medical University, Xuzhou, Jiangsu 221004, PR China
| | - Man Li
- Department of Genetics, Xuzhou Medical University, Xuzhou, Jiangsu 221004, PR China; Jiangsu Key Laboratory of Brain Disease Bioinformation, Xuzhou Medical University, Xuzhou, Jiangsu 221004, PR China
| | - Xiang-Ru Wen
- Department of Genetics, Xuzhou Medical University, Xuzhou, Jiangsu 221004, PR China; Jiangsu Key Laboratory of Brain Disease Bioinformation, Xuzhou Medical University, Xuzhou, Jiangsu 221004, PR China
| | - Xiao-Yan Zhou
- Jiangsu Key Laboratory of Brain Disease Bioinformation, Xuzhou Medical University, Xuzhou, Jiangsu 221004, PR China; Department of Pathogenic Biology and Immunology, Laboratory of Infection and Immunity, The Affiliated Hospital of Xuzhou Medical University, Xuzhou, Jiangsu 221004, PR China
| | - He-Qing Lou
- School of Public Health, Xuzhou Medical University, Xuzhou, Jiangsu 221004, PR China
| | - Yu-Lan Wang
- Department of Human Anatomy, Xuzhou Medical University, Xuzhou, Jiangsu 221004, PR China
| | - Da-Shi Qi
- Department of Genetics, Xuzhou Medical University, Xuzhou, Jiangsu 221004, PR China; Jiangsu Key Laboratory of Brain Disease Bioinformation, Xuzhou Medical University, Xuzhou, Jiangsu 221004, PR China
| | - Man Tang
- School of Nursing, Xuzhou Medical University, Xuzhou, Jiangsu 221004, PR China.
| | - Xun-Bao Zhang
- Department of Genetics, Xuzhou Medical University, Xuzhou, Jiangsu 221004, PR China; School of Public Health, Xuzhou Medical University, Xuzhou, Jiangsu 221004, PR China.
| |
Collapse
|
10
|
Packer JR, Hirst AM, Droop AP, Adamson R, Simms MS, Mann VM, Frame FM, O'Connell D, Maitland NJ. Notch signalling is a potential resistance mechanism of progenitor cells within patient-derived prostate cultures following ROS-inducing treatments. FEBS Lett 2020; 594:209-226. [PMID: 31468514 PMCID: PMC7003772 DOI: 10.1002/1873-3468.13589] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2019] [Revised: 08/02/2019] [Accepted: 08/08/2019] [Indexed: 12/16/2022]
Abstract
Low Temperature Plasma (LTP) generates reactive oxygen and nitrogen species, causing cell death, similarly to radiation. Radiation resistance results in tumour recurrence, however mechanisms of LTP resistance are unknown. LTP was applied to patient-derived prostate epithelial cells and gene expression assessed. A typical global oxidative response (AP-1 and Nrf2 signalling) was induced, whereas Notch signalling was activated exclusively in progenitor cells. Notch inhibition induced expression of prostatic acid phosphatase (PAP), a marker of prostate epithelial cell differentiation, whilst reducing colony forming ability and preventing tumour formation. Therefore, if LTP is to be progressed as a novel treatment for prostate cancer, combination treatments should be considered in the context of cellular heterogeneity and existence of cell type-specific resistance mechanisms.
Collapse
Affiliation(s)
- John R. Packer
- Cancer Research UnitDepartment of BiologyUniversity of YorkUK
| | - Adam M. Hirst
- Cancer Research UnitDepartment of BiologyUniversity of YorkUK
- Department of PhysicsYork Plasma InstituteUniversity of YorkUK
| | | | - Rachel Adamson
- Cancer Research UnitDepartment of BiologyUniversity of YorkUK
| | - Matthew S. Simms
- Department of UrologyCastle Hill Hospital (Hull and East Yorkshire Hospitals NHS Trust)CottinghamUK
| | - Vincent M. Mann
- Cancer Research UnitDepartment of BiologyUniversity of YorkUK
| | - Fiona M. Frame
- Cancer Research UnitDepartment of BiologyUniversity of YorkUK
| | | | | |
Collapse
|
11
|
MiR-107 overexpression attenuates neurotoxicity induced by 6-hydroxydopamine both in vitro and in vivo. Chem Biol Interact 2019; 315:108908. [PMID: 31778666 DOI: 10.1016/j.cbi.2019.108908] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2019] [Revised: 11/14/2019] [Accepted: 11/25/2019] [Indexed: 12/28/2022]
Abstract
Alzheimer's disease (AD), the most common form of dementia, is a neurodegenerative disease characterized by neuronal atrophy in various brain regions. The expression of miR-107 is down-regulated in AD patients and target genes of miR-107 have been shown to directly involved in AD. In this study, we aimed to investigate the potential neuroprotective effects of miR-107. We first assessed brain activity in health controls and patients with AD. Then we examined miR-107 expression in SH-SY5Y and PC12 cells treated with 6-hydroxydopamine (6-OHDA), and investigated its function in cytotoxicity induced by 6-OHDA. We predicted a potential miR-107 target and assessed its role in miR-107 mediated effects and explored the intracellular signaling pathways downstream of miR-107. Finally, we assessed the function of miR-107 in the mouse model insulted by 6-OHDA. We found that 6-OHDA suppressed miR-107 expression and miR-107 played neuroprotective effects against 6-OHDA mediated cytotoxicity. We showed that miR-107 targeted programmed cell death 10 (PDCD10). MiR-107 suppressed PDCD10 expression and exogenous expression of PDCD10 inhibited miR-107 mediated neuroprotection. Additionally, we found that Notch signal pathway was downstream of miR-107/PDCD10. Finally, we found that 6-OHDA treatment suppressed miR-107 in mice and restoration of miR-107 alleviated motor disorder in the mouse model. Our study shows that miR-107 plays important neuroprotective roles against neurotoxicity both in vitro and in vivo by inhibiting PDCD10. Our findings confirm that miR-107 may be involved in AD pathogenesis and may be a therapeutic target for the treatment of AD-related impairments.
Collapse
|
12
|
Li L, Lin G, Gu H, Yu L, Ni C. Effects of Srxn1 on growth and Notch signalling of astrocyte induced by hydrogen peroxide. ARTIFICIAL CELLS NANOMEDICINE AND BIOTECHNOLOGY 2019; 47:1917-1923. [PMID: 31079497 DOI: 10.1080/21691401.2019.1614016] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
OBJECTIVE To investigate the effect of Sulfiredoxin-1 (Srxn1) on astrocyte injury induced by hydrogen peroxide (H2O2). METHODS Observing the changes of H2O2 on contents of lactate dehydrogenase (LDH), malondialdehyde (MDA), superoxide dismutase (SOD) and apoptosis after transfected Srxn1 siRNA into astrocytes. The protein expression of Notch 1, NICD and Hes1, the content of LDH and MDA, the activity of SOD and apoptosis rate of astrocytes after inhibiting or activation of Notch signalling pathway were detected by Western blot, ELISA and flow cytometry, respectively. RESULTS Knockdown of Srxn1 could promote the secretion of LDH and MDA, decrease the activity of SOD and aggravate apoptosis of astrocytes induced by H2O2. The results of Western blot, ELISA assay and flow cytometry indicated that activation of the Notch signalling pathway attenuated the effect of Srxn1 on H2O2-induced oxidative damage and apoptosis of astrocytes. CONCLUSION Srxn1 may protect astrocytes from oxidative stress injury induced by H2O2 by activation of Notch signalling pathway.
Collapse
Affiliation(s)
- Lan Li
- a Department of Neurology , Second Affiliated Hospital of Dalian Medical University , Dalian City , Liaoning , China
| | - Guangjun Lin
- a Department of Neurology , Second Affiliated Hospital of Dalian Medical University , Dalian City , Liaoning , China
| | - Huizi Gu
- a Department of Neurology , Second Affiliated Hospital of Dalian Medical University , Dalian City , Liaoning , China
| | - Lei Yu
- b Department of Neurology , Dalian Friendship Hospital , Dalian City , Liaoning , China
| | - Changwei Ni
- a Department of Neurology , Second Affiliated Hospital of Dalian Medical University , Dalian City , Liaoning , China
| |
Collapse
|
13
|
Taqi MO, Saeed‐Zidane M, Gebremedhn S, Salilew‐Wondim D, Khdrawy O, Rings F, Neuhoff C, Hoelker M, Schellander K, Tesfaye D. Sexual dimorphic expression and release of transcription factors in bovine embryos exposed to oxidative stress. Mol Reprod Dev 2019; 86:2005-2019. [DOI: 10.1002/mrd.23272] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2019] [Accepted: 09/02/2019] [Indexed: 12/15/2022]
Affiliation(s)
- Mohamed O. Taqi
- Department of Animal Breeding and Husbandry, Institute of Animal ScienceUniversity of Bonn Bonn Germany
| | - Mohammed Saeed‐Zidane
- Department of Animal Breeding and Husbandry, Institute of Animal ScienceUniversity of Bonn Bonn Germany
| | - Samuel Gebremedhn
- Department of Animal Breeding and Husbandry, Institute of Animal ScienceUniversity of Bonn Bonn Germany
| | - Dessie Salilew‐Wondim
- Department of Animal Breeding and Husbandry, Institute of Animal ScienceUniversity of Bonn Bonn Germany
| | - Omar Khdrawy
- Department of Animal Breeding and Husbandry, Institute of Animal ScienceUniversity of Bonn Bonn Germany
| | - Franca Rings
- Teaching and Research Station Frankenforst, Faculty of AgricultureUniversity of Bonn Königswinter Germany
- Center of Integrated Dairy Research, Faculty of AgricultureUniversity of Bonn Bonn Germany
| | - Christiane Neuhoff
- Department of Animal Breeding and Husbandry, Institute of Animal ScienceUniversity of Bonn Bonn Germany
| | - Michael Hoelker
- Department of Animal Breeding and Husbandry, Institute of Animal ScienceUniversity of Bonn Bonn Germany
- Teaching and Research Station Frankenforst, Faculty of AgricultureUniversity of Bonn Königswinter Germany
- Center of Integrated Dairy Research, Faculty of AgricultureUniversity of Bonn Bonn Germany
| | - Karl Schellander
- Department of Animal Breeding and Husbandry, Institute of Animal ScienceUniversity of Bonn Bonn Germany
- Center of Integrated Dairy Research, Faculty of AgricultureUniversity of Bonn Bonn Germany
| | - Dawit Tesfaye
- Department of Animal Breeding and Husbandry, Institute of Animal ScienceUniversity of Bonn Bonn Germany
- Center of Integrated Dairy Research, Faculty of AgricultureUniversity of Bonn Bonn Germany
| |
Collapse
|
14
|
Cheng W, Zheng T, Wang Y, Cai K, Wu W, Zhao T, Xu R. Activation of Notch1 signaling by HTLV-1 Tax promotes proliferation of adult T-cell leukemia cells. Biochem Biophys Res Commun 2019; 512:598-603. [PMID: 30914196 DOI: 10.1016/j.bbrc.2019.03.094] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2019] [Accepted: 03/16/2019] [Indexed: 01/04/2023]
Abstract
Human T-cell leukemia virus 1 (HTLV-1), an oncogenic retrovirus, and Notch1 signaling, implicated in tumor formation and progression, are both associated with the development of adult T-cell leukemia (ATL). Here we explored the possibility of a mechanistic link between the two. We observed that the expression of Notch intracellular domain (NICD) was elevated in HTLV-1 infected cell lines. Knocking down of Notch1 in ATL cells repressed cellular proliferation and tumor formation both in vitro and in vivo. As a mechanism for these actions, we found that Tax activated Notch1 signaling by prolonging the half-life of NICD. We then showed that Tax, NICD, and RBP-jκ formed a ternary complex, that Tax enhanced the association of NICD with RBP-jκ, and that Tax, NICD, and RBP-jκ were bound to RBP-jκ-responsive elements. Hence, our results suggest that HTLV-1 promotes cellular proliferation and tumor formation of ATL cells by modulating Notch signaling via a posttranslational mechanism that involves interactions between Tax, NICD, and RBP-jκ.
Collapse
Affiliation(s)
- Wenzhao Cheng
- Engineering Research Center of Molecular Medicine, Ministry of Education, China. Fujian Provincial Key Laboratory of Molecular Medicine, School of Medicine, Huaqiao University, 668 Jimei Avenue, Xiamen, Fujian Province, 361021, China
| | - Tingjin Zheng
- Engineering Research Center of Molecular Medicine, Ministry of Education, China. Fujian Provincial Key Laboratory of Molecular Medicine, School of Medicine, Huaqiao University, 668 Jimei Avenue, Xiamen, Fujian Province, 361021, China
| | - Yong Wang
- College of Chemistry and Life Sciences, Zhejiang Normal University, 688 Yingbin Road, Jinhua, Zhejiang Province, 321004, China
| | - Kun Cai
- Engineering Research Center of Molecular Medicine, Ministry of Education, China. Fujian Provincial Key Laboratory of Molecular Medicine, School of Medicine, Huaqiao University, 668 Jimei Avenue, Xiamen, Fujian Province, 361021, China
| | - Wencai Wu
- College of Chemistry and Life Sciences, Zhejiang Normal University, 688 Yingbin Road, Jinhua, Zhejiang Province, 321004, China
| | - Tiejun Zhao
- College of Chemistry and Life Sciences, Zhejiang Normal University, 688 Yingbin Road, Jinhua, Zhejiang Province, 321004, China.
| | - Ruian Xu
- Engineering Research Center of Molecular Medicine, Ministry of Education, China. Fujian Provincial Key Laboratory of Molecular Medicine, School of Medicine, Huaqiao University, 668 Jimei Avenue, Xiamen, Fujian Province, 361021, China.
| |
Collapse
|
15
|
Matsuno Y, Kiwamoto T, Morishima Y, Ishii Y, Hizawa N, Hogaboam CM. Notch signaling regulates cell density-dependent apoptosis of NIH 3T3 through an IL-6/STAT3 dependent mechanism. Eur J Cell Biol 2018; 97:512-522. [PMID: 30249464 DOI: 10.1016/j.ejcb.2018.09.001] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2017] [Revised: 08/31/2018] [Accepted: 09/10/2018] [Indexed: 01/05/2023] Open
Abstract
Apoptosis is a physiological process that plays a critical maintenance role in cellular homeostasis. Previous reports have demonstrated that cells undergo apoptosis in a cell density-dependent manner, which is regulated, in part, by signal transducers and activators of transcription (STAT) 3. The molecular mechanisms regulating cell density-dependent apoptosis, however, has not been thoroughly investigated to date. Since Notch signaling is activated via direct cell-to-cell contact and plays a pivotal role in cell fate decisions, we examined the role of Notch signaling in cell density-dependent apoptosis of mouse embryonic fibroblasts NIH 3T3 cells. With the increase in cell density, IL-6 expression was induced, which was necessary for STAT3 activation as well as apoptosis regulation. Notch signaling was also activated in a cell-density dependent manner. Blocking Notch signaling either through siRNA-mediated targeting of Jagged1 expression or γ-secretase inhibitor treatment demonstrated that Notch signaling activation was necessary for IL-6 induction. Constitutive activation of Notch signaling via the overexpression of Notch1 intracellular domain was sufficient for the induction of IL-6, which was mediated via direct transcriptional activation. Taken together, our study indicates that Notch signaling regulates cell density-dependent apoptosis through IL-6/STAT3-dependent mechanism. Consequently, Notch signaling might represent a novel therapeutic target in diseases characterized by dysregulated apoptosis.
Collapse
Affiliation(s)
- Yosuke Matsuno
- Department of Respiratory Medicine, Institute of Clinical Medicine, University of Tsukuba, Tsukuba, Ibaraki 305-8575, Japan.
| | - Takumi Kiwamoto
- Department of Respiratory Medicine, Institute of Clinical Medicine, University of Tsukuba, Tsukuba, Ibaraki 305-8575, Japan
| | - Yuko Morishima
- Department of Respiratory Medicine, Institute of Clinical Medicine, University of Tsukuba, Tsukuba, Ibaraki 305-8575, Japan
| | - Yukio Ishii
- Department of Respiratory Medicine, Institute of Clinical Medicine, University of Tsukuba, Tsukuba, Ibaraki 305-8575, Japan
| | - Nobuyuki Hizawa
- Department of Respiratory Medicine, Institute of Clinical Medicine, University of Tsukuba, Tsukuba, Ibaraki 305-8575, Japan
| | - Cory M Hogaboam
- Division of Pulmonary and Critical Care Medicine, Department of Medicine, Cedars-Sinai Medical Center, Los Angeles, CA 90048, United States
| |
Collapse
|
16
|
Zhang X, Yang Y, Feng Z. Suppression of microRNA-495 alleviates high-glucose-induced retinal ganglion cell apoptosis by regulating Notch/PTEN/Akt signaling. Biomed Pharmacother 2018; 106:923-929. [PMID: 30119264 DOI: 10.1016/j.biopha.2018.07.018] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2018] [Revised: 07/03/2018] [Accepted: 07/03/2018] [Indexed: 12/14/2022] Open
Abstract
High glucose (HG)-induced apoptosis of retinal ganglion cells (RGCs) contributes to the pathogenesis of diabetic retinopathy, which is one of the most common and severe complications of diabetes mellitus. Accumulating evidence has documented that microRNAs (miRNAs) play an important role in the pathogenesis of diabetic retinopathy. However, the role of miRNAs in regulating HG-induced apoptosis of RGCs remains largely unknown. Various studies have suggested that miR-495 is an important regulator of cell apoptosis and survival. In this study, we aimed to investigate whether miR-495 is involved in regulating HG-induced apoptosis of RGCs and reveal its possible relevance in diabetic retinopathy. We found that miR-495 was significantly upregulated in HG-treated RGCs. Downregulation of miR-495 protected RGCs against HG-induced apoptosis, whereas overexpression of miR-495 had the opposite effect. Notably, Notch1 was identified as a target gene of miR-495, as miR-495 negatively regulated Notch1 expression and the Notch signaling pathway. Moreover, downregulation of miR-495 inhibited PTEN expression while promoting Akt activation. However, knockdown of Notch1 significantly abolished the protective effect of miR-495 inhibition against HG-induced apoptosis. Overall, our study suggests that downregulation of miR-495 alleviates HG-induced apoptosis of RGCs by targeting Notch1 to regulate PTEN/Akt signaling, which provides novel insights into understanding the pathogenesis of HG-induced apoptosis of RGCs.
Collapse
Affiliation(s)
- Xiaohui Zhang
- Ophthalmology Department, The Second Affiliated Hospital, Medical College, Xi'an Jiaotong University, Xi'an, 710004, PR China.
| | - Yuhong Yang
- Ophthalmology Department, Shaanxi Second Provincial People's Hospital, Xi'an, 710005, PR China
| | - Zhaohui Feng
- Ophthalmology Department, The Second Affiliated Hospital, Medical College, Xi'an Jiaotong University, Xi'an, 710004, PR China
| |
Collapse
|
17
|
Nemeth Z, Csizmadia E, Vikstrom L, Li M, Bisht K, Feizi A, Otterbein S, Zuckerbraun B, Costa DB, Pandolfi PP, Fillinger J, Döme B, Otterbein LE, Wegiel B. Alterations of tumor microenvironment by carbon monoxide impedes lung cancer growth. Oncotarget 2018; 7:23919-32. [PMID: 26993595 PMCID: PMC5029674 DOI: 10.18632/oncotarget.8081] [Citation(s) in RCA: 39] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2015] [Accepted: 02/29/2016] [Indexed: 12/26/2022] Open
Abstract
We hypothesized that tumor-associated macrophages (TAMs) are controlled by the diffusible gas carbon monoxide (CO). We demonstrate that induction of apoptosis in lung tumors treated with low doses of CO is associated with increased CD86 expression and activation of mitogen-activated protein kinase (MAPK)/extracellular signal-regulated kinases (Erk) 1/2 pathway in tumor microenvironment. Presence of CD86-positive cells was required for the anti-tumoral effects of CO in established A549 xenografts. We show that the effects of CO on tumor stroma and reprogramming of macrophages towards the anti-tumoral phenotype is mediated by reactive oxygen species (ROS)-dependent activation of MAPK/Erk1/2-c-myc pathway as well as Notch 1-dependent negative feedback on the metabolic enzyme heme oxygenase-1 (HO-1). We find a similar negative correlation between HO-1 and active MAPK-Erk1/2 levels in human lung cancer specimens. In summary, we describe novel non-cell autonomous mechanisms by which the diffusible gas CO dictates changes in the tumor microenvironment through the modulation of macrophages.
Collapse
Affiliation(s)
- Zsuzsanna Nemeth
- Department of Surgery, Transplant Institute, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, USA.,Department of Tumor Biology, National Koranyi Institute of TB and Pulmonology, Budapest, Hungary
| | - Eva Csizmadia
- Department of Surgery, Transplant Institute, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, USA
| | - Lisa Vikstrom
- Department of Surgery, Transplant Institute, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, USA
| | - Mailin Li
- Department of Surgery, Transplant Institute, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, USA
| | - Kavita Bisht
- Department of Surgery, Transplant Institute, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, USA.,Heart Foundation Research Center, Griffith Health Institute, Griffith University, Gold Coast, Australia
| | - Alborz Feizi
- Department of Surgery, Transplant Institute, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, USA
| | - Sherrie Otterbein
- Department of Surgery, Section of Trauma and Acute Care Surgery, University of Pittsburgh Medical Center, Pittsburgh, PA, USA
| | - Brian Zuckerbraun
- Department of Surgery, Section of Trauma and Acute Care Surgery, University of Pittsburgh Medical Center, Pittsburgh, PA, USA
| | - Daniel B Costa
- Cancer Center Institute, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, USA.,Department of Medicine, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, USA
| | - Pier Paolo Pandolfi
- Cancer Center Institute, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, USA.,Department of Medicine, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, USA
| | - Janos Fillinger
- Department of Pathology, National Koranyi Institute of TB and Pulmonology, Budapest, Hungary
| | - Balazs Döme
- Department of Tumor Biology, National Koranyi Institute of TB and Pulmonology, Budapest, Hungary.,Division of Thoracic Surgery, Department of Surgery, Comprehensive Cancer Center, Medical University of Vienna, Austria.,Department of Thoracic Surgery, National Institute of Oncology, Budapest, Hungary
| | - Leo E Otterbein
- Department of Surgery, Transplant Institute, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, USA
| | - Barbara Wegiel
- Department of Surgery, Transplant Institute, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, USA.,Cancer Center Institute, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, USA
| |
Collapse
|
18
|
Ahn JS, Ann EJ, Kim MY, Yoon JH, Lee HJ, Jo EH, Lee K, Lee JS, Park HS. Autophagy negatively regulates tumor cell proliferation through phosphorylation dependent degradation of the Notch1 intracellular domain. Oncotarget 2018; 7:79047-79063. [PMID: 27806347 PMCID: PMC5346697 DOI: 10.18632/oncotarget.12986] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2016] [Accepted: 10/19/2016] [Indexed: 02/01/2023] Open
Abstract
Autophagy is a highly conserved mechanism that degrades long-lived proteins and dysfunctional organelles, and contributes to cell fate. In this study, autophagy attenuates Notch1 signaling by degrading the Notch1 intracellular domain (Notch1-IC). Nutrient-deprivation promotes Notch1-IC phosphorylation by MEKK1 and phosphorylated Notch1-IC is recognized by Fbw7 E3 ligase. The ubiquitination of Notch1-IC by Fbw7 is essential for the interaction between Notch1-IC and p62 and for the formation of aggregates. Inhibition of Notch1 signaling prevents the transformation of breast cancer cells, tumor progression, and metastasis. The expression of Notch1 and p62 is inversely correlated with Beclin1 expression in human breast cancer patients. These results show that autophagy inhibits Notch1 signaling by promoting Notch1-IC degradation and therefore plays a role in tumor suppression.
Collapse
Affiliation(s)
- Ji-Seon Ahn
- Hormone Research Center, School of Biological Sciences and Technology, Chonnam National University, Gwangju 61186, Republic of Korea
| | - Eun-Jung Ann
- Hormone Research Center, School of Biological Sciences and Technology, Chonnam National University, Gwangju 61186, Republic of Korea
| | - Mi-Yeon Kim
- Hormone Research Center, School of Biological Sciences and Technology, Chonnam National University, Gwangju 61186, Republic of Korea
| | - Ji-Hye Yoon
- Hormone Research Center, School of Biological Sciences and Technology, Chonnam National University, Gwangju 61186, Republic of Korea
| | - Hye-Jin Lee
- Hormone Research Center, School of Biological Sciences and Technology, Chonnam National University, Gwangju 61186, Republic of Korea
| | - Eun-Hye Jo
- Hormone Research Center, School of Biological Sciences and Technology, Chonnam National University, Gwangju 61186, Republic of Korea
| | - Keesook Lee
- Hormone Research Center, School of Biological Sciences and Technology, Chonnam National University, Gwangju 61186, Republic of Korea
| | - Ji Shin Lee
- Department of Pathology, Chonnam National University Medical School and Research Institute of Medical Sciences, Gwangju 61469, Republic of Korea
| | - Hee-Sae Park
- Hormone Research Center, School of Biological Sciences and Technology, Chonnam National University, Gwangju 61186, Republic of Korea
| |
Collapse
|
19
|
Abstract
Pim kinases are being implicated in oncogenic process in various human cancers. Pim kinases primarily deal with three broad categories of functions such as tumorigenesis, protecting cells from apoptotic signals and evading immune attacks. Here in this review, we discuss the regulation of Pim kinases and their expression, and how these kinases defend cancer cells from therapeutic and immune attacks with special emphasis on how Pim kinases maintain their own expression during apoptosis and cellular transformation, defend mitochondria during apoptosis, defend cancer cells from immune attack, defend cancer cells from therapeutic attack, choose localization, self-regulation, activation of oncogenic transcription, metabolic regulation and so on. In addition, we also discuss how Pim kinases contribute to tumorigenesis by regulating cellular transformation and glycolysis to reinforce the importance of Pim kinases in cancer and cancer stem cells.
Collapse
|
20
|
Oxidative stress preconditioning of mouse perivascular myogenic progenitors selects a subpopulation of cells with a distinct survival advantage in vitro and in vivo. Cell Death Dis 2018; 9:1. [PMID: 29298988 PMCID: PMC5849040 DOI: 10.1038/s41419-017-0012-9] [Citation(s) in RCA: 203] [Impact Index Per Article: 33.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2017] [Revised: 08/07/2017] [Accepted: 09/18/2017] [Indexed: 01/01/2023]
Abstract
Cell engraftment, survival and integration during transplantation procedures represent the crux of cell-based therapies. Thus, there have been many studies focused on improving cell viability upon implantation. We used severe oxidative stress to select for a mouse mesoangioblast subpopulation in vitro and found that this subpopulation retained self-renewal and myogenic differentiation capacities while notably enhancing cell survival, proliferation and migration relative to unselected cells. Additionally, this subpopulation of cells presented different resistance and recovery properties upon oxidative stress treatment, demonstrating select advantages over parental mesoangioblasts in our experimental analysis. Specifically, the cells were resistant to oxidative environments, demonstrating survival, continuous self-renewal and improved migration capability. The primary outcome of the selected cells was determined in in vivo experiments in which immunocompromised dystrophic mice were injected intramuscularly in the tibialis anterior with selected or non-selected mesoangioblasts. Resistant mesoangioblasts exhibited markedly enhanced survival and integration into the host skeletal muscle, accounting for a more than 70% increase in engraftment compared with that of the unselected mesoangioblast cell population and leading to remarkable muscle recovery. Thus, the positive effects of sorting on mesoangioblast cell behaviour in vitro and in vivo suggest that a selection step involving oxidative stress preconditioning may provide a novel methodology to select for resistant cells for use in regenerative tissue applications to prevent high mortality rates upon transplantation.
Collapse
|
21
|
Vieceli Dalla Sega F, Aquila G, Fortini F, Vaccarezza M, Secchiero P, Rizzo P, Campo G. Context-dependent function of ROS in the vascular endothelium: The role of the Notch pathway and shear stress. Biofactors 2017; 43:475-485. [PMID: 28419584 DOI: 10.1002/biof.1359] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/23/2016] [Accepted: 03/12/2017] [Indexed: 12/15/2022]
Abstract
Reactive oxygen species (ROS) act as signal molecules in several biological processes whereas excessive, unregulated, ROS production contributes to the development of pathological conditions including endothelial dysfunction and atherosclerosis. The maintenance of a healthy endothelium depends on many factors and on their reciprocal interactions; in this framework, the Notch pathway and shear stress (SS) play two lead roles. Recently, evidence of a crosstalk between ROS, Notch, and SS, is emerging. The aim of this review is to describe the way ROS interact with the Notch pathway and SS protecting from-or promoting-the development of endothelial dysfunction. © 2017 BioFactors, 43(4):475-485, 2017.
Collapse
Affiliation(s)
| | - Giorgio Aquila
- Department of Medical Sciences, University of Ferrara, Ferrara, Italy
| | - Francesca Fortini
- Department of Medical Sciences, University of Ferrara, Ferrara, Italy
| | - Mauro Vaccarezza
- Faculty of Health Sciences, School of Biomedical Sciences, Curtin University, Perth, Australia
| | - Paola Secchiero
- Department of Morphology, Surgery and Experimental Medicine, University of Ferrara, Ferrara, Italy
- Laboratory for Technologies of Advanced Therapies (LTTA) Center, Ferrara, Italy
| | - Paola Rizzo
- Department of Morphology, Surgery and Experimental Medicine, University of Ferrara, Ferrara, Italy
- Maria Cecilia Hospital, GVM Care & Research, E.S. Health Science Foundation, Cotignola, (RA), Italy
| | - Gianluca Campo
- Department of Medical Sciences, University of Ferrara, Ferrara, Italy
- Cardiovascular Institute, Azienda Ospedaliero-Universitaria S. Anna, Cona, (FE), Italy
| |
Collapse
|
22
|
Nishida T, Hattori K, Watanabe K. The regulatory and signaling mechanisms of the ASK family. Adv Biol Regul 2017; 66:2-22. [PMID: 28669716 DOI: 10.1016/j.jbior.2017.05.004] [Citation(s) in RCA: 54] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2017] [Revised: 05/17/2017] [Accepted: 05/17/2017] [Indexed: 01/05/2023]
Abstract
Apoptosis signal-regulating kinase 1 (ASK1) was identified as a MAP3K that activates the JNK and p38 pathways, and subsequent studies have reported ASK2 and ASK3 as members of the ASK family. The ASK family is activated by various intrinsic and extrinsic stresses, including oxidative stress, ER stress and osmotic stress. Numerous lines of evidence have revealed that members of the ASK family are critical for signal transduction systems to control a wide range of stress responses such as cell death, differentiation and cytokine induction. In this review, we focus on the precise signaling mechanisms of the ASK family in response to diverse stressors.
Collapse
Affiliation(s)
- Takuto Nishida
- Laboratory of Cell Signaling, Graduate School of Pharmaceutical Sciences, The University of Tokyo, Japan
| | - Kazuki Hattori
- Laboratory of Cell Signaling, Graduate School of Pharmaceutical Sciences, The University of Tokyo, Japan.
| | - Kengo Watanabe
- Laboratory of Cell Signaling, Graduate School of Pharmaceutical Sciences, The University of Tokyo, Japan.
| |
Collapse
|
23
|
Fukumoto J, Cox R, Fukumoto I, Cho Y, Parthasarathy PT, Galam L, Lockey RF, Kolliputi N. Deletion of ASK1 Protects against Hyperoxia-Induced Acute Lung Injury. PLoS One 2016; 11:e0147652. [PMID: 26807721 PMCID: PMC4726536 DOI: 10.1371/journal.pone.0147652] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2015] [Accepted: 01/05/2016] [Indexed: 12/11/2022] Open
Abstract
Apoptosis signal-regulating kinase 1 (ASK1), a member of the MAPK kinase kinase kinase (MAP3K) family, is activated by various stimuli, which include oxidative stress, endoplasmic reticulum (ER) stress, calcium influx, DNA damage-inducing agents and receptor-mediated signaling through tumor necrosis factor receptor (TNFR). Inspiration of a high concentration of oxygen is a palliative therapy which counteracts hypoxemia caused by acute lung injury (ALI)-induced pulmonary edema. However, animal experiments so far have shown that hyperoxia itself could exacerbate ALI through reactive oxygen species (ROS). Our previous data indicates that ASK1 plays a pivotal role in hyperoxia-induced acute lung injury (HALI). However, it is unclear whether or not deletion of ASK1 in vivo protects against HALI. In this study, we investigated whether ASK1 deletion would lead to attenuation of HALI. Our results show that ASK1 deletion in vivo significantly suppresses hyperoxia-induced elevation of inflammatory cytokines (i.e. IL-1β and TNF-α), cell apoptosis in the lung, and recruitment of immune cells. In summary, the results from the study suggest that deletion of ASK1 in mice significantly inhibits hyperoxic lung injury.
Collapse
Affiliation(s)
- Jutaro Fukumoto
- Division of Allergy and Immunology, Department of Internal Medicine, Morsani College of Medicine, University of South Florida, Tampa, Florida, United States of America
| | - Ruan Cox
- Division of Allergy and Immunology, Department of Internal Medicine, Morsani College of Medicine, University of South Florida, Tampa, Florida, United States of America
- Department of Molecular Medicine, Morsani College of Medicine, University of South Florida, Tampa, Florida, United States of America
| | - Itsuko Fukumoto
- Division of Allergy and Immunology, Department of Internal Medicine, Morsani College of Medicine, University of South Florida, Tampa, Florida, United States of America
| | - Young Cho
- Division of Allergy and Immunology, Department of Internal Medicine, Morsani College of Medicine, University of South Florida, Tampa, Florida, United States of America
| | - Prasanna Tamarapu Parthasarathy
- Division of Allergy and Immunology, Department of Internal Medicine, Morsani College of Medicine, University of South Florida, Tampa, Florida, United States of America
| | - Lakshmi Galam
- Division of Allergy and Immunology, Department of Internal Medicine, Morsani College of Medicine, University of South Florida, Tampa, Florida, United States of America
| | - Richard F. Lockey
- Division of Allergy and Immunology, Department of Internal Medicine, Morsani College of Medicine, University of South Florida, Tampa, Florida, United States of America
| | - Narasaiah Kolliputi
- Division of Allergy and Immunology, Department of Internal Medicine, Morsani College of Medicine, University of South Florida, Tampa, Florida, United States of America
- * E-mail:
| |
Collapse
|
24
|
Kim H, Oh Y, Kim K, Jeong S, Chon S, Kim D, Jung MH, Pak YK, Ha J, Kang I, Choe W. Cyclophilin A regulates JNK/p38-MAPK signaling through its physical interaction with ASK1. Biochem Biophys Res Commun 2015; 464:112-7. [PMID: 26095851 DOI: 10.1016/j.bbrc.2015.06.078] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2015] [Accepted: 06/11/2015] [Indexed: 10/23/2022]
Abstract
Cyclophilin A (CypA), a member of the immunophilin family, is predominantly localized in the cytoplasm. The peptidylprolyl isomerase (PPIase) activity of CypA has been demonstrated to be involved in diverse cellular processes, including intracellular protein trafficking, mitochondrial function, pre-mRNA processing, and maintenance of multiprotein complex stability. In this study, we have demonstrated that CypA regulates apoptosis signaling-regulating kinase 1 (ASK1) through its direct binding. ASK1 is a member of MAPK kinase kinase (MAP3K) family, and selectively activates both JNK and p38 MAPK pathways. Here, we also report that CypA negatively regulates phosphorylation of ASK1 at Ser966, and that CypA reduces ASK1 and its downstream kinases of the JNK and p38 signaling. ASK1 is known to induce caspase-3 activation and apoptosis, and CypA inhibited ASK1-mediated apoptosis by decrease in caspase-3 activity under cellular stress conditions. Overall, we conclude that CypA negatively regulates ASK1 functions by its physical interaction with ASK1.
Collapse
Affiliation(s)
- Hunsung Kim
- Department of Biochemistry and Molecular Biology (BK21 project), Medical Research Center for Bioreaction to Reactive Oxygen Species and Biomedical Science Institute, School of Medicine, Kyung Hee University, Seoul 130-701, Republic of Korea
| | - Yoojung Oh
- Department of Biochemistry and Molecular Biology (BK21 project), Medical Research Center for Bioreaction to Reactive Oxygen Species and Biomedical Science Institute, School of Medicine, Kyung Hee University, Seoul 130-701, Republic of Korea
| | - Kiyoon Kim
- Department of Biochemistry and Molecular Biology (BK21 project), Medical Research Center for Bioreaction to Reactive Oxygen Species and Biomedical Science Institute, School of Medicine, Kyung Hee University, Seoul 130-701, Republic of Korea
| | - Suyun Jeong
- Department of Biochemistry and Molecular Biology (BK21 project), Medical Research Center for Bioreaction to Reactive Oxygen Species and Biomedical Science Institute, School of Medicine, Kyung Hee University, Seoul 130-701, Republic of Korea
| | - Suk Chon
- Department of Endocrinology and Metabolism, Kyung Hee University School of Medicine, Seoul, Republic of Korea
| | - Daehong Kim
- Molecular Imaging & Therapy Branch, National Cancer Center, 809 Madu1dong Ilsandonggu Goyangsi, Gyeonggydo 410-769, Republic of Korea
| | - Min Hyung Jung
- Department of Physiology, College of Medicine, Kyung Hee University, Seoul 130-731, Republic of Korea
| | - Youngmi Kim Pak
- Department of Obstetrics and Gynecology, School of Medicine, Kyung Hee University, Seoul 130-701, Republic of Korea
| | - Joohun Ha
- Department of Biochemistry and Molecular Biology (BK21 project), Medical Research Center for Bioreaction to Reactive Oxygen Species and Biomedical Science Institute, School of Medicine, Kyung Hee University, Seoul 130-701, Republic of Korea
| | - Insug Kang
- Department of Biochemistry and Molecular Biology (BK21 project), Medical Research Center for Bioreaction to Reactive Oxygen Species and Biomedical Science Institute, School of Medicine, Kyung Hee University, Seoul 130-701, Republic of Korea
| | - Wonchae Choe
- Department of Biochemistry and Molecular Biology (BK21 project), Medical Research Center for Bioreaction to Reactive Oxygen Species and Biomedical Science Institute, School of Medicine, Kyung Hee University, Seoul 130-701, Republic of Korea.
| |
Collapse
|
25
|
Quercetin attenuates cell apoptosis of oxidant-stressed SK-N-MC cells while suppressing up-regulation of the defensive element, HIF-1α. Neuroscience 2014; 277:780-93. [PMID: 25108166 DOI: 10.1016/j.neuroscience.2014.07.036] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2014] [Revised: 07/23/2014] [Accepted: 07/23/2014] [Indexed: 01/25/2023]
Abstract
Evidence is emerging that reactive oxygen species (ROS)-induced oxidative stress has a crucial role in the pathogenesis of neurodegenerative diseases. To find the effective therapies for neurodegenerative diseases, evaluation of the relevant molecular mechanisms is necessary. In the current study, we investigated the effects of hydrogen peroxide (H2O2)-induced oxidative stress on SK-N-MC cell death with focus on HIF-1α, Foxo3a and Notch1 signaling factors. Our results revealed that H2O2 reduced viability of cells through up-regulation of p53 followed by increase in Bax/Bcl2 ratio. In addition, H2O2 increased intracellular levels of HIF-1α, Foxo-3a and Notch intracellular domain (NICD). However, Quercetin decreased cell contents of HIF-1α, Foxo-3a and NICD as well as pro-apoptotic factors including p53 and Bax compared to H2O2-treated cells. Additionally, we found that HIF-1α down-regulation reduced Foxo3a and NICD contents parallel to up-regulation of p53 and Bax and led to further vulnerability to oxidative stress-induced cell death. In contrast, Notch inhibition resulted in HIF-1α/Foxo3a signaling pathway up-regulation, suggesting the bidirectional crosstalk between HIF-1α and Notch1. These results collectively suggest that ROS are involved in activation of both the defensive and pro-apoptotic pathways encompassing HIF-1α and p53, respectively. Regarding the HIF-1α-mediated neuroprotection role, elucidation of the molecular mechanism would certainly be essential for effective drug design against neurodegenerative diseases.
Collapse
|
26
|
Shin HM, Tilahun ME, Cho OH, Chandiran K, Kuksin CA, Keerthivasan S, Fauq AH, Golde TE, Miele L, Thome M, Osborne BA, Minter LM. NOTCH1 Can Initiate NF-κB Activation via Cytosolic Interactions with Components of the T Cell Signalosome. Front Immunol 2014; 5:249. [PMID: 24904593 PMCID: PMC4033603 DOI: 10.3389/fimmu.2014.00249] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2014] [Accepted: 05/12/2014] [Indexed: 11/13/2022] Open
Abstract
T cell stimulation requires the input and integration of external signals. Signaling through the T cell receptor (TCR) is known to induce formation of the membrane-tethered CBM complex, comprising CARMA1, BCL10, and MALT1, which is required for TCR-mediated NF-κB activation. TCR signaling has been shown to activate NOTCH proteins, transmembrane receptors also implicated in NF-κB activation. However, the link between TCR-mediated NOTCH signaling and early events leading to induction of NF-κB activity remains unclear. In this report, we demonstrate a novel cytosolic function for NOTCH1 and show that it is essential to CBM complex formation. Using a model of skin allograft rejection, we show in vivo that NOTCH1 acts in the same functional pathway as PKCθ, a T cell-specific kinase important for CBM assembly and classical NF-κB activation. We further demonstrate in vitro NOTCH1 associates physically with PKCθ and CARMA1 in the cytosol. Unexpectedly, when NOTCH1 expression was abrogated using RNAi approaches, interactions between CARMA1, BCL10, and MALT1 were lost. This failure in CBM assembly reduced inhibitor of kappa B alpha phosphorylation and diminished NF-κB–DNA binding. Finally, using a luciferase gene reporter assay, we show the intracellular domain of NOTCH1 can initiate robust NF-κB activity in stimulated T cells, even when NOTCH1 is excluded from the nucleus through modifications that restrict it to the cytoplasm or hold it tethered to the membrane. Collectively, these observations provide evidence that NOTCH1 may facilitate early events during T cell activation by nucleating the CBM complex and initiating NF-κB signaling.
Collapse
Affiliation(s)
- Hyun Mu Shin
- Program in Molecular and Cellular Biology, University of Massachusetts/Amherst , Amherst, MA , USA
| | - Mulualem E Tilahun
- Department of Veterinary and Animal Sciences, University of Massachusetts/Amherst , Amherst, MA , USA
| | - Ok Hyun Cho
- Department of Veterinary and Animal Sciences, University of Massachusetts/Amherst , Amherst, MA , USA
| | - Karthik Chandiran
- Program in Molecular and Cellular Biology, University of Massachusetts/Amherst , Amherst, MA , USA
| | - Christina Arieta Kuksin
- Department of Veterinary and Animal Sciences, University of Massachusetts/Amherst , Amherst, MA , USA
| | - Shilpa Keerthivasan
- Program in Molecular Biology, Loyola University Medical Center , Maywood, IL , USA
| | - Abdul H Fauq
- Chemical Synthesis Core Facility, Mayo Clinic , Jacksonville, FL , USA
| | - Todd E Golde
- Center for Translational Research in Neurodegenerative Disease, University of Florida , Gainesville, FL , USA ; Department of Neuroscience, College of Medicine, University of Florida , Gainesville, FL , USA
| | - Lucio Miele
- Department of Medicine and Pharmacology, University of Mississippi Medical Center, University of Mississippi Cancer Institute , Jackson, MS , USA
| | - Margot Thome
- Department of Biochemistry, Center of Immunity and Infection, University of Lausanne , Epalinges , Switzerland
| | - Barbara A Osborne
- Program in Molecular and Cellular Biology, University of Massachusetts/Amherst , Amherst, MA , USA ; Department of Veterinary and Animal Sciences, University of Massachusetts/Amherst , Amherst, MA , USA
| | - Lisa M Minter
- Program in Molecular and Cellular Biology, University of Massachusetts/Amherst , Amherst, MA , USA ; Department of Veterinary and Animal Sciences, University of Massachusetts/Amherst , Amherst, MA , USA
| |
Collapse
|
27
|
Kim HS, Jung G. Notch1 increases Snail expression under high reactive oxygen species conditions in hepatocellular carcinoma cells. Free Radic Res 2014; 48:806-13. [PMID: 24684482 DOI: 10.3109/10715762.2014.909595] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
Notch1 and reactive oxygen species (ROS) modulate important pathways associated with tumor development and progression. Notably, Notch1 expression is upregulated in 41.8% of hepatocellular carcinoma (HCC) patients and ROS levels increases as HCC progresses from Grade I to Grade III. It has been established that Notch1 and ROS modulate Snail expression in malignant tumors; however, the mechanism regulating Snail protein expression is not yet known. In this study, we observed that Notch1 and ROS cooperatively increase the levels of Snail protein in Huh7 (hepatoma) cells. On its own, signaling through Notch1 increases transcription of Snail without changing protein levels. In contrast, the combined activation of the Notch1 and ROS-induced phosphoinositide 3-kinase/Akt (PI3K/Akt) signaling pathways resulted in the high expression of Snail protein. This increase in Snail expression was associated with increased Huh7 cells invasiveness. Furthermore, we observed that correlation between Snail and Notch1 expression was the strongest in advanced grade HCC tissue. In conclusion, Notch1 and ROS-induced PI3K/Akt signals cooperatively increase Snail expression and may induce malignancy in HCC.
Collapse
Affiliation(s)
- H S Kim
- Department of Biological Sciences, Seoul National University , Seoul , Republic of Korea
| | | |
Collapse
|
28
|
Ubiquitination-dependent CARM1 degradation facilitates Notch1-mediated podocyte apoptosis in diabetic nephropathy. Cell Signal 2014; 26:1774-82. [PMID: 24726896 DOI: 10.1016/j.cellsig.2014.04.008] [Citation(s) in RCA: 55] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2014] [Accepted: 04/06/2014] [Indexed: 12/21/2022]
Abstract
Podocyte apoptosis induced by hyperglycemia is considered a critical factor in the development of diabetic nephropathy. Recent studies have implicated Notch signaling in podocyte apoptosis; however, its regulatory mechanisms are not fully understood. In this study, we found that high-glucose treatment increased Notch1 and Jagged-1 expression, the transcriptional activity of Hes, and podocyte apoptosis, and decreased the expression of coactivator-associated arginine methyltransferase 1 (CARM1) in rat podocytes. Transient transfection of CARM1 reversed high-glucose-induced Notch1 expression, the transcriptional activity of Hes, and podocyte apoptosis. Moreover, the silencing of CARM1 using siRNA increased Notch1 expression, the transcriptional activity of Hes, and podocyte apoptosis. However, the Glu(266)-mediated enzymatic activity of CARM1 was not necessary for Notch signaling activation and podocyte apoptosis. Here, we demonstrate that AMP-activated protein kinase alpha (AMPKα) and cannabinoid receptor 1 (CB1R) are regulated by CARM1 and that high-glucose-induced podocyte apoptosis is mediated by a CARM1-AMPKα-Notch1-CB1R signaling axis. We also show that high-glucose-induced CARM1 downregulation is due to ubiquitination-dependent CARM1 degradation. Finally, we demonstrate that CARM1 expression in podocytes was diminished in rats with streptozotocin-induced diabetes compared to vehicle-treated rats. Together, our data provide evidence that ubiquitination-dependent CARM1 degradation in podocytes in diabetes promotes podocyte apoptosis via Notch1 activation. Strategies to preserve CARM1 expression or reduce the enzymatic activity of a ubiquitin ligase specific for CARM1 could be used to prevent podocyte loss in diabetic nephropathy.
Collapse
|