scholarly journals Impact of delipidated estrous sheep serum supplementation on in vitro maturation, cryotolerance and endoplasmic reticulum stress gene expression of sheep oocytes

PLoS ONE ◽  
2018 ◽  
Vol 13 (6) ◽  
pp. e0198742 ◽  
Author(s):  
Natalibeth Barrera ◽  
Pedro C. dos Santos Neto ◽  
Federico Cuadro ◽  
Diego Bosolasco ◽  
Ana P. Mulet ◽  
...  
Keyword(s):  
Gene Expression ◽  
Endoplasmic Reticulum ◽  
Endoplasmic Reticulum Stress ◽  
In Vitro Maturation ◽  
Serum Supplementation ◽  
Stress Gene

scholarly journals Melatonin improves the meiotic maturation of porcine oocytes by reducing endoplasmic reticulum stress during in vitro maturation

2017 ◽  
Vol 64 (2) ◽  
pp. e12458 ◽  
Author(s):  
Hyo-Jin Park ◽  
Jae-Young Park ◽  
Jin-Woo Kim ◽  
Seul-Gi Yang ◽  
Jae-Min Jung ◽  
...  
Keyword(s):  
Endoplasmic Reticulum ◽  
Endoplasmic Reticulum Stress ◽  
In Vitro Maturation ◽  
Meiotic Maturation

scholarly journals Transcriptome characterization and gene expression of Epinephelus spp in endoplasmic reticulum stress-related pathway during betanodavirus infection in vitro

BMC Genomics ◽  
2012 ◽  
Vol 13 (1) ◽  
pp. 651 ◽  
Author(s):  
Ming-Wei Lu ◽  
Fang-Huar Ngou ◽  
Yung-Mei Chao ◽  
Yu-Shen Lai ◽  
Nai-Yu Chen ◽  
...  
Keyword(s):  
Gene Expression ◽  
Endoplasmic Reticulum ◽  
Endoplasmic Reticulum Stress ◽  
Related Pathway

scholarly journals Downregulation of ceramide synthase 1 promotes oral cancer through endoplasmic reticulum stress

2021 ◽  
Vol 13 (1) ◽  
Author(s):  
Wen Chen ◽  
Chenzhou Wu ◽  
Yafei Chen ◽  
Yuhao Guo ◽  
Ling Qiu ◽  
...  
Keyword(s):  
Squamous Cell Carcinoma ◽  
Endoplasmic Reticulum ◽  
Oral Cancer ◽  
Oral Squamous Cell Carcinoma ◽  
Endoplasmic Reticulum Stress ◽  
Cell Carcinoma ◽  
Squamous Cell ◽  
Migration And Invasion ◽  
Ceramide Synthase

AbstractC18 ceramide plays an important role in the occurrence and development of oral squamous cell carcinoma. However, the function of ceramide synthase 1, a key enzyme in C18 ceramide synthesis, in oral squamous cell carcinoma is still unclear. The aim of our study was to investigate the relationship between ceramide synthase 1 and oral cancer. In this study, we found that the expression of ceramide synthase 1 was downregulated in oral cancer tissues and cell lines. In a mouse oral squamous cell carcinoma model induced by 4-nitroquinolin-1-oxide, ceramide synthase 1 knockout was associated with the severity of oral malignant transformation. Immunohistochemical studies showed significant upregulation of PCNA, MMP2, MMP9, and BCL2 expression and downregulation of BAX expression in the pathological hyperplastic area. In addition, ceramide synthase 1 knockdown promoted cell proliferation, migration, and invasion in vitro. Overexpression of CERS1 obtained the opposite effect. Ceramide synthase 1 knockdown caused endoplasmic reticulum stress and induced the VEGFA upregulation. Activating transcription factor 4 is responsible for ceramide synthase 1 knockdown caused VEGFA transcriptional upregulation. In addition, mild endoplasmic reticulum stress caused by ceramide synthase 1 knockdown could induce cisplatin resistance. Taken together, our study suggests that ceramide synthase 1 is downregulated in oral cancer and promotes the aggressiveness of oral squamous cell carcinoma and chemotherapeutic drug resistance.

scholarly journals NRF2-mediated signaling is a master regulator of transcription factors in bovine granulosa cells under oxidative stress condition

2021 ◽  
Author(s):  
Mohamed Omar Taqi ◽  
Mohammed Saeed-Zidane ◽  
Samuel Gebremedhn ◽  
Dessie Salilew-Wondim ◽  
Ernst Tholen ◽  
...  
Keyword(s):  
Oxidative Stress ◽  
Cell Proliferation ◽  
Endoplasmic Reticulum ◽  
Transcription Factors ◽  
Endoplasmic Reticulum Stress ◽  
Granulosa Cells ◽  
Mitochondrial Activity ◽  
Small Interference Rna ◽  
Nrf2 Signaling Pathway

AbstractTranscription 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.

The Effect of Wnt Family Member 5a Gene Silencing on the Proliferation of Achondroplasia Using a DNAzymes-CoOOH Nanocomposite

2021 ◽  
Vol 17 (7) ◽  
pp. 1426-1434
Author(s):  
Hairui Xie ◽  
Lili Zhou ◽  
Zhijiang Chen ◽  
Hong Zhao
Keyword(s):  
Endoplasmic Reticulum ◽  
Endoplasmic Reticulum Stress ◽  
Family Member ◽  
Interaction Analysis ◽  
Mitogen Activated Protein Kinase ◽  
Mitogen Activated Protein ◽  
Endoplasmic Reticulum Stress Pathway ◽  
Protein Kinase Signaling ◽  
Kinase Signaling Pathway

Achondroplasia is a kind of congenital dysplasia due to the defect of endochondral ossification. Achondroplasia is considered to be a protein folding disease leading to endoplasmic reticulum stress. Endoplasmic reticulum stress may lead to disease by affecting the function and survival state of chondrocytes, but the specific mechanism requires further study. In this study, bioinformatics methods, online database mining, screening of differentially expressed genes for pathway enrichment, and interaction analysis were conducted to detect the Wnt family member 5a (Wnt5a) gene. Additionally, we designed a novel DNAzymes-based nanocomposite that can simultaneously silence Wnt5a genes in chondrocytes. The nanocomposite was composed of amino-functionalized cobalt oxyhydroxide nanoflakes modified by DNAzymes that target the Wnt5a gene. Further, we conducted in vitro experiments to verify that Wnt5a can mediate the mitogen-activated protein kinase signaling pathway through the endoplasmic reticulum stress pathway to affect the proliferation of chondrocytes.

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