scholarly journals Porcine epidemic diarrhea virus through p53-dependent pathway causes cell cycle arrest in the G0/G1 phase

2018 ◽  
Vol 253 ◽  
pp. 1-11 ◽  
Author(s):  
Pei Sun ◽  
Haoyang Wu ◽  
Jiali Huang ◽  
Ying Xu ◽  
Feng Yang ◽  
...  
Keyword(s):  
Cell Cycle ◽  
Cell Cycle Arrest ◽  
Porcine Epidemic Diarrhea Virus ◽  
G1 Phase ◽  
Diarrhea Virus ◽  
Cycle Arrest ◽  
Porcine Epidemic Diarrhea ◽  
Dependent Pathway

scholarly journals Cannabidiol Induces Cell Cycle Arrest and Cell Apoptosis in Human Gastric Cancer SGC-7901 Cells

Biomolecules ◽  
2019 ◽  
Vol 9 (8) ◽  
pp. 302 ◽  
Author(s):  
Xin Zhang ◽  
Yao Qin ◽  
Zhaohai Pan ◽  
Minjing Li ◽  
Xiaona Liu ◽  
...  
Keyword(s):  
Gastric Cancer ◽  
Cell Cycle ◽  
Protein Expression ◽  
Cell Cycle Arrest ◽  
Phase Cell ◽  
G1 Phase ◽  
Therapeutic Effects ◽  
Human Gastric Cancer ◽  
Expression Levels ◽  
Cycle Arrest

The main chemical component of cannabis, cannabidiol (CBD), has been shown to have antitumor properties. The present study examined the in vitro effects of CBD on human gastric cancer SGC-7901 cells. We found that CBD significantly inhibited the proliferation and colony formation of SGC-7901 cells. Further investigation showed that CBD significantly upregulated ataxia telangiectasia-mutated gene (ATM) and p53 protein expression and downregulated p21 protein expression in SGC-7901 cells, which subsequently inhibited the levels of CDK2 and cyclin E, thereby resulting in cell cycle arrest at the G0–G1 phase. In addition, CBD significantly increased Bax expression levels, decreased Bcl-2 expression levels and mitochondrial membrane potential, and then upregulated the levels of cleaved caspase-3 and cleaved caspase-9, thereby inducing apoptosis in SGC-7901 cells. Finally, we found that intracellular reactive oxygen species (ROS) increased after CBD treatment. These results indicated that CBD could induce G0–G1 phase cell cycle arrest and apoptosis by increasing ROS production, leading to the inhibition of SGC-7901 cell proliferation, thereby suggesting that CBD may have therapeutic effects on gastric cancer.

Inhibition of cell growth and induction of G1-phase cell cycle arrest in hepatoma cells by steroid extract from Meretrix meretrix

2006 ◽  
Vol 232 (2) ◽  
pp. 199-205 ◽  
Author(s):  
Ting-He Wu ◽  
Ruo-Lin Yang ◽  
Li-Ping Xie ◽  
Hong-Zhong Wang ◽  
Lei Chen ◽  
...  
Keyword(s):  
Cell Cycle ◽  
Cell Growth ◽  
Cell Cycle Arrest ◽  
Hepatoma Cells ◽  
Phase Cell ◽  
G1 Phase ◽  
Meretrix Meretrix ◽  
Cycle Arrest

Hypoxia Induces Resistance to 5-Fluorouracil in Oral Cancer Cells Via G1 Phase Cell Cycle Arrest

2009 ◽  
pp. 184-190
Author(s):  
Sayaka Yoshiba ◽  
Daisuke Ito ◽  
Tatsuhito Nagumo ◽  
Tatsuo Shirota ◽  
Masashi Hatori ◽  
...  
Keyword(s):  
Cell Cycle ◽  
Oral Cancer ◽  
Cell Cycle Arrest ◽  
Cancer Cells ◽  
Phase Cell ◽  
G1 Phase ◽  
Cycle Arrest ◽  
Oral Cancer Cells

scholarly journals A Novel Methoxybenzyl 5-Nitroacridone Derivative Effectively Triggers G1 Cell Cycle Arrest in Chronic Myelogenous Leukemia K562 Cells by Inhibiting CDK4/6-Mediated Phosphorylation of Rb

2020 ◽  
Vol 21 (14) ◽  
pp. 5077
Author(s):  
Bin Zhang ◽  
Ting Zhang ◽  
Tian-Yi Zhang ◽  
Ning Wang ◽  
Shan He ◽  
...  
Keyword(s):  
Cell Cycle ◽  
Chronic Myeloid Leukemia ◽  
Cell Cycle Arrest ◽  
Chronic Myelogenous Leukemia ◽  
Myeloid Leukemia ◽  
K562 Cells ◽  
Myelogenous Leukemia ◽  
G1 Phase ◽  
Cycle Arrest ◽  
G1 Cell Cycle Arrest

Chronic myeloid leukemia (CML) is a malignant tumor caused by the abnormal proliferation of hematopoietic stem cells. Among a new series of acridone derivatives previously synthesized, it was found that the methoxybenzyl 5-nitroacridone derivative 8q has nanomolar cytotoxicity in vitro against human chronic myelogenous leukemia K562 cells. In order to further explore the possible anti-leukemia mechanism of action of 8q on K562 cells, a metabolomics and molecular biology study was introduced. It was thus found that most of the metabolic pathways of the G1 phase of K562 cells were affected after 8q treatment. In addition, a concentration-dependent accumulation of cells in the G1 phase was observed by cell cycle analysis. Western blot analysis showed that 8q significantly down-regulated the phosphorylation level of retinoblastoma-associated protein (Rb) in a concentration-dependent manner, upon 48 h treatment. In addition, 8q induced K562 cells apoptosis, through both mitochondria-mediated and exogenous apoptotic pathways. Taken together, these results indicate that 8q effectively triggers G1 cell cycle arrest and induces cell apoptosis in K562 cells, by inhibiting the CDK4/6-mediated phosphorylation of Rb. Furthermore, the possible binding interactions between 8q and CDK4/6 protein were clarified by homology modeling and molecular docking. In order to verify the inhibitory activity of 8q against other chronic myeloid leukemia cells, KCL-22 cells and K562 adriamycin-resistant cells (K562/ADR) were selected for the MTT assay. It is worth noting that 8q showed significant anti-proliferative activity against these cell lines after 48 h/72 h treatment. Therefore, this study provides new mechanistic information and guidance for the development of new acridones for application in the treatment of CML.

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