scholarly journals circBTBD7 Promotes Immature Porcine Sertoli Cell Growth through Modulating miR-24-3p/MAPK7 Axis to Inactivate p38 MAPK Signaling Pathway

2021 ◽  
Vol 22 (17) ◽  
pp. 9385
Author(s):  
Qiao Bian ◽  
Bin Chen ◽  
Bo Weng ◽  
Dan Chu ◽  
Xiangwei Tang ◽  
...  
Keyword(s):  
Cell Proliferation ◽  
Cell Growth ◽  
Signaling Pathway ◽  
P38 Mapk ◽  
Sertoli Cell ◽  
Sertoli Cells ◽  
Cell Apoptosis ◽  
Mapk Signaling ◽  
Mapk Signaling Pathway ◽  
Normal Spermatogenesis

Sertoli cells are the crucial coordinators to guarantee normal spermatogenesis and male fertility. Although circular RNAs (circRNAs) exhibit developmental-stage-specific expression in porcine testicular tissues and have been thought of as potential regulatory molecules in spermatogenesis, their functions and mechanisms of action remain largely unknown, especially in domestic animals. A novel circBTBD7 was identified from immature porcine Sertoli cells using reverse transcription PCR, Sanger sequencing, and fluorescence in situ hybridization assays. Functional assays illustrated that circBTBD7 overexpression promoted cell cycle progression and cell proliferation, as well as inhibited cell apoptosis in immature porcine Sertoli cells. Mechanistically, circBTBD7 acted as a sponge for the miR-24-3p and further facilitated its target mitogen-activated protein kinase 7 (MAPK7) gene. Overexpression of miR-24-3p impeded cell proliferation and induced cell apoptosis, which further attenuated the effects of circBTBD7 overexpression. siRNA-induced MAPK7 deficiency resulted in a similar effect to miR-24-3p overexpression, and further offset the effects of miR-24-3p inhibition. Both miR-24-3p overexpression and MAPK7 knockdown upregulated the p38 phosphorylation activity. The SB202190 induced the inhibition of p38 MAPK pathway and caused an opposite effect to that of miR-24-3p overexpression and MAPK7 knockdown. Collectively, circBTBD7 promotes immature porcine Sertoli cell growth through modulating the miR-24-3p/MAPK7 axis to inactivate the p38 MAPK signaling pathway. This study expanded our knowledge of noncoding RNAs in porcine normal spermatogenesis through deciding the fate of Sertoli cells.

scholarly journals Protective Effect of Penetratin Analogue-Tagged SOD1 on Cisplatin-Induced Nephrotoxicity through Inhibiting Oxidative Stress and JNK/p38 MAPK Signaling Pathway

2021 ◽  
Vol 2021 ◽  
pp. 1-13
Author(s):  
Xiao-lu Wang ◽  
Liang Wang ◽  
Fo-lan Lin ◽  
Si-si Li ◽  
Ting-xuan Lin ◽  
...  
Keyword(s):  
Oxidative Stress ◽  
Cell Membrane ◽  
Signaling Pathway ◽  
P38 Mapk ◽  
Cell Apoptosis ◽  
Mapk Signaling ◽  
Tunel Assay ◽  
Mapk Signaling Pathway ◽  
Mapk Activation ◽  
Urea Nitrogen

Copper/zinc superoxide dismutase (SOD1) can clear cisplatin- (CP-) induced excessive reactive oxygen species (ROS), but exogenous SOD1 cannot enter cells because of its low biomembrane permeability. Cell-penetrating peptides (CPPs) can rapidly cross plasma membranes. This study is aimed at identifying an efficient and stable CPP-SOD1 and investigating its effects on CP-induced nephrotoxicity. We recombined SOD1 with 14 different CPPs and purified them using an NTA-Ni2+ column. In in vitro experiments, CPPs-SOD1 cell membrane penetration ability and JNK/p38 MAPK signaling pathway were evaluated using Western blotting. ROS production, mitochondrial membrane potential (MMP), and cell apoptosis were determined using flow cytometry and immunofluorescence staining in VERO and HK-2 cells. For in vivo experiments, mice were administered PSF-SOD1 for 2 h before cotreatment with a single CP injection for an additional 4 days. Blood and kidney samples were collected for renal function assessment (creatinine, urea nitrogen, histopathology, TUNEL assay, and JNK/p38 MAPK signaling pathway). Compared with TAT-SOD1, we found that PSF-SOD1 is more efficient at crossing the cell membrane and is stable after transduction into cells. Pretreatment with PSF-SOD1 inhibited CP-induced apoptosis, ROS generation, and JNK/p38 MAPK activation and restored CP-induced MMP loss in VERO and HK-2 kidney cells. Treatment of mice with PSF-SOD1 inhibited CP-induced serum creatinine, blood urea nitrogen elevation, and JNK/p38 MAPK activation. H&E staining and TUNEL assay indicated that kidney tissue damage was alleviated following PSF-SOD1 pretreatment. Overall, PSF-SOD1 ameliorated CP-induced renal damage by partially reducing oxidative stress and cell apoptosis by regulating JNK/p38 MAPK signaling pathway and might be a better cytoprotective agent than TAT-SOD1.

scholarly journals miR-3188 Regulates Cell Proliferation, Apoptosis, and Migration in Breast Cancer by Targeting TUSC5 and Regulating the p38 MAPK Signaling Pathway

2018 ◽  
Vol 26 (3) ◽  
pp. 363-372 ◽  
Author(s):  
Xiaowen Chen ◽  
Jianli Chen
Keyword(s):  
Breast Cancer ◽  
Cell Proliferation ◽  
Signaling Pathway ◽  
P38 Mapk ◽  
Molecular Mechanisms ◽  
Mapk Signaling ◽  
Mapk Signaling Pathway ◽  
Luciferase Reporter ◽  
And Migration ◽  
Mcf 7

This study intended to investigate the effects of miR-3188 on breast cancer and to reveal the possible molecular mechanisms. miR-3188 was upregulated and TUSC5 was downregulated in breast cancer tissues and MCF-7 cells compared to normal tissue and MCF-10 cells. After MCF-7 cells were transfected with miR-3188 inhibitor, cell proliferation and migration were inhibited, whereas apoptosis was promoted. Luciferase reporter assay suggested that TUSC5 was a target gene of miR-3188. In addition, miR-3188 overexpression increased the p-p38 expression, while miR-3188 suppression decreased the p-p38 expression significantly. miR-3188 regulated breast cancer progression via the p38 MAPK signaling pathway. In conclusion, miR-3188 affects breast cancer cell proliferation, apoptosis, and migration by targeting TUSC5 and activating the p38 MAPK signaling pathway. miR-3188 may serve as a potential therapeutic agent for the treatment of breast cancer.

scholarly journals MicroRNA-124 inhibits macrophage cell apoptosis via targeting p38/MAPK signaling pathway in atherosclerosis development

Aging ◽  
2020 ◽  
Vol 12 (13) ◽  
pp. 13005-13022
Author(s):  
Xue Liang ◽  
Lijun Wang ◽  
Manman Wang ◽  
Zhaohong Liu ◽  
Xing Liu ◽  
...  
Keyword(s):  
Signaling Pathway ◽  
P38 Mapk ◽  
Cell Apoptosis ◽  
Mapk Signaling ◽  
Mapk Signaling Pathway ◽  
Macrophage Cell ◽  
Microrna 124 ◽  
Atherosclerosis Development

scholarly journals Rutin Protects against Pirarubicin-Induced Cardiotoxicity through TGF-β1-p38 MAPK Signaling Pathway

2017 ◽  
Vol 2017 ◽  
pp. 1-10 ◽  
Author(s):  
Yadi Wang ◽  
Yang Zhang ◽  
Bo Sun ◽  
Qing Tong ◽  
Liqun Ren
Keyword(s):  
Signaling Pathway ◽  
P38 Mapk ◽  
Cell Apoptosis ◽  
Dose Range ◽  
Mapk Signaling ◽  
Positive Control ◽  
Mapk Signaling Pathway ◽  
Cardioprotective Effect ◽  
Mitogen Activated Protein Kinase ◽  
Ros Generation

We investigated the potential protective effect of rutinum (RUT) against pirarubicin- (THP-) induced cardiotoxicity. THP was used to induce toxicity in rat H9c2 cardiomyoblasts. Positive control cells were pretreated with a cardioprotective agent dexrazoxane (DZR) prior to treatment with THP. Some of the cells were preincubated with RUT and a p38 mitogen-activated protein kinase (MAPK) inhibitor, SB203580, both individually and in combination, prior to THP exposure. At a dose range of 30–70 μM, RUT significantly prevented THP-induced reduction in cell viability; the best cardioprotective effect was observed at a dose of 50 μM. Administration of RUT and SB203580, both individually as well as in combination, suppressed the elevation of intracellular ROS, inhibited cell apoptosis, and reversed the THP-induced upregulation of TGF-β1, p-p38 MAPK, cleaved Caspase-9, Caspase-7, and Caspase-3. A synergistic effect was observed on coadministration of RUT and SB203580. RUT protected against THP-induced cardiotoxicity by inhibition of ROS generation and suppression of cell apoptosis. The cardioprotective effect of RUT appears to be associated with the modulation of the TGF-β1-p38 MAPK signaling pathway.

scholarly journals miR-499 promotes immature porcine Sertoli cell growth through the PI3K/AKT pathway by targeting the PTEN gene

Reproduction ◽  
2020 ◽  
Vol 159 (2) ◽  
pp. 145-157 ◽  
Author(s):  
Hu Gao ◽  
Bin Chen ◽  
Hui Luo ◽  
Bo Weng ◽  
Xiangwei Tang ◽  
...  
Keyword(s):  
Cell Proliferation ◽  
Cell Growth ◽  
Signaling Pathway ◽  
Sertoli Cell ◽  
Sertoli Cells ◽  
Akt Signaling ◽  
Akt Pathway ◽  
Pten Gene ◽  
Seminiferous Tubules ◽  
Akt Signaling Pathway

Sertoli cells are indispensable for normal spermatogenesis, and increasing evidence has shown that miRNAs participate in the regulation of Sertoli cell growth. However, the functions and regulatory mechanisms of miRNAs in Sertoli cells of domestic animals have not been fully investigated. In the present study, we mainly investigated the regulatory roles of miR-499 in immature porcine Sertoli cells. The results showed that miR-499 was mainly located in the basement section of seminiferous tubules of prepubertal porcine testicular tissue. Overexpression of miR-499 promoted cell proliferation and inhibited apoptosis, whereas miR-499 inhibition resulted in the opposite effect. The PTEN gene was directly targeted by miR-499, and the expression of mRNA and protein was also negatively regulated by miR-499 in immature porcine Sertoli cells. siRNA-induced PTEN knockdown resulted in a similar effect as an overexpression of miR-499 and abolished the effects of miR-499 inhibition on immature porcine Sertoli cells. Moreover, both miR-499 overexpression and the PTEN knockdown activated the PI3K/AKT signaling pathway, whereas inhibition of the PI3K/AKT signaling pathway caused immature porcine Sertoli cell apoptosis and inhibited cell proliferation. Overall, miR-499 promotes proliferation and inhibits apoptosis in immature porcine Sertoli cells through the PI3K/AKT pathway by targeting the PTEN gene. This study provides novel insights into the effects of miR-499 in spermatogenesis through the regulation of immature Sertoli cell proliferation and apoptosis.

scholarly journals Long non-coding RNA H19 contributes to wound healing of diabetic foot ulcer

2020 ◽  
Vol 65 (3) ◽  
pp. 69-84
Author(s):  
Bo Li ◽  
Yue Zhou ◽  
Jing Chen ◽  
Tingting Wang ◽  
Zhijuan Li ◽  
...  
Keyword(s):  
Cell Proliferation ◽  
Wound Healing ◽  
Signaling Pathway ◽  
Diabetic Foot ◽  
Cell Apoptosis ◽  
Foot Ulcer ◽  
Diabetic Foot Ulcer ◽  
Mapk Signaling ◽  
Mapk Signaling Pathway ◽  
Ecm Remodeling

Diabetic foot ulcer (DFU) is a chronic and non-healing complication of diabetes that leads to high hospital costs and, in extreme cases, to amputation. Recent studies have reported that long non-coding RNAs (lncRNAs) are linked to various diabetes-related symptoms. Thus, we aim to explore the role of lncRNA H19 in the wound healing process following DFU. Fibroblasts were isolated from the ulcer margin tissues of DFU patients, with the expression of lncRNA H19, connective tissue growth factor (CTGF) or serum response factor (SRF) altered by lentivirus infection. Next, rat models of DFU induced by high glucose and lipid diet were established, which was also infected with the corresponding lentivirus. The interaction among lncRNA H19, SRF and CTGF was determined. Afterward, cell proliferation and apoptosis, angiogenesis, ECM remodeling and wound healing in DFU tissues were evaluated to explore the effects of lncRNA H19/SRF/CTGF and MAPK signaling pathway on DFU. CTGF was poorly expressed in ulcer tissues from DFU rats and patients. CTGF overexpression was shown to activate the MAPK signaling pathway to promote cell proliferation, ECM remodeling, angiogenesis and wound healing while inhibiting cell apoptosis. lncRNA H19 was validated to elevate CTGF expression by recruiting SRF to the promoter region of CTGF, thus accelerating cell proliferation, ECM remodeling and wound healing while repressing cell apoptosis. Furthermore, MAPK signaling pathway activation is confirmed to be the underlying mechanism behind lncRNA H19/CTGF/SRF-induced results. Thus, lncRNA H19 accelerated wound healing in DFU through elevation of CTGF and activation of the MAPK signaling pathway.

scholarly journals S100A11 promotes cell proliferation via P38/MAPK signaling pathway in intrahepatic cholangiocarcinoma

2018 ◽  
Vol 58 (1) ◽  
pp. 19-30 ◽  
Author(s):  
Mei‐xia Zhang ◽  
Wei Gan ◽  
Chu‐yu Jing ◽  
Su‐su Zheng ◽  
Yong Yi ◽  
...  
Keyword(s):  
Cell Proliferation ◽  
Signaling Pathway ◽  
P38 Mapk ◽  
Intrahepatic Cholangiocarcinoma ◽  
Mapk Signaling ◽  
Mapk Signaling Pathway
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