scholarly journals Downregulation of Diacylglycerol kinase zeta (DGKZ) suppresses tumorigenesis and progression of cervical cancer by facilitating cell apoptosis and cell cycle arrest

Bioengineered ◽  
2021 ◽  
Vol 12 (1) ◽  
pp. 1517-1529
Author(s):  
Keying Liu ◽  
Biyun Xue ◽  
Guiqin Bai ◽  
Wentao Zhang
2018 ◽  
Vol 18 (6) ◽  
pp. 875-881 ◽  
Author(s):  
Xue Zhu ◽  
Ke Wang ◽  
Kai Zhang ◽  
Yi Pan ◽  
Fanfan Zhou ◽  
...  

Background: Retinoblastoma is the most common intraocular malignant tumor in childhood. Although external beam radiation and enucleation are effective to control retinoblastoma, eye salvage and vision preservation are still significant challenges. Polyphyllin I (PPI), a natural compound extracted from Paris polyphylla rhizomes, has a wide range of activities against many types of cancers. However, the potential effect of this herbal compound on retinoblastoma has not yet been investigated. Method: In the present study, we evaluated the cytotoxic effect of PPI on human retinoblastoma Y-79 cells as well as its underlying molecular mechanism. Our results indicated that PPI treatment significantly inhibited cell proliferation, arrested the cell cycle at G2/M phase and induced cell apoptosis of Y79 cells through the mitochondrial- dependent intrinsic pathway. Moreover, p53 is involved in PPI-induced cytotoxicity in human retinoblastoma Y-79 cells. Exposure to 10 μM PPI for 48 h dramatically induced the expression levels of p53, phosphorylated- p53 and acetylated-p53. Furthermore, blockade of p53 expression effectively attenuated PPI-induced cell cycle arrest and cell apoptosis in Y-79 cells. Result: These results demonstrated that PPI exhibits anti-proliferation effect on human retinoblastoma Y-79 cells through modulating p53 expression, stabilization and activation. This information shed light on the potential application of PPI in retinoblastoma therapy.


2015 ◽  
Vol 2015 ◽  
pp. 1-10 ◽  
Author(s):  
Wei Keat Ng ◽  
Latifah Saiful Yazan ◽  
Li Hua Yap ◽  
Wan Abd Ghani Wan Nor Hafiza ◽  
Chee Wun How ◽  
...  

Thymoquinone (TQ) has been shown to exhibit antitumor properties. Thymoquinone-loaded nanostructured lipid carrier (TQ-NLC) was developed to improve the bioavailability and cytotoxicity of TQ. This study was conducted to determine the cytotoxic effects of TQ-NLC on breast cancer (MDA-MB-231 and MCF-7) and cervical cancer cell lines (HeLa and SiHa). TQ-NLC was prepared by applying the hot high pressure homogenization technique. The mean particle size of TQ-NLC was 35.66 ± 0.1235 nm with a narrow polydispersity index (PDI) lower than 0.25. The zeta potential of TQ-NLC was greater than −30 mV. Polysorbate 80 helps to increase the stability of TQ-NLC. Differential scanning calorimetry showed that TQ-NLC has a melting point of 56.73°C, which is lower than that of the bulk material. The encapsulation efficiency of TQ in TQ-NLC was 97.63 ± 0.1798% as determined by HPLC analysis. TQ-NLC exhibited antiproliferative activity towards all the cell lines in a dose-dependent manner which was most cytotoxic towards MDA-MB-231 cells. Cell shrinkage was noted following treatment of MDA-MB-231 cells with TQ-NLC with an increase of apoptotic cell population (P<0.05). TQ-NLC also induced cell cycle arrest. TQ-NLC was most cytotoxic towards MDA-MB-231 cells. It induced apoptosis and cell cycle arrest in the cells.


2016 ◽  
Vol 11 (4) ◽  
pp. 838 ◽  
Author(s):  
Ning Xia

<p class="Abstract">The present study was aimed at to demonstrate the antitumor effects of syringin in HeLa human cervical cancer cells. Its effects on apoptosis, cell cycle phase distribution as well as on cell migration were also examined. The effect on cell proliferation was evaluated by MTT assay, while as effects on colony formation were assessed using clonogenic assay. Syringin inhibited cancer cell growth in HeLa cells in a time-dependent as well as in a concentration-dependent manner. Syringin also led to inhibition of colony formation efficacy with complete suppression at 100 µM drug dose. Syringin could induce G2/M cell cycle arrest along with slight sub-G1 cell cycle arrest. HeLa cells began to emit red fluorescence as the dose of syringin increased from 0 µM in vehicle control to 100 µM. Syringin also inhibited cell migration in a dose-dependent manner with 100 µM dose of syringin leading to 100% inhibition of cell migration.</p><p> </p>


2021 ◽  
Vol 9 (6) ◽  
pp. 487-487
Author(s):  
Qing Zhang ◽  
Jingjing Yuan ◽  
Yanyan Liu ◽  
Xingchen Liu ◽  
Tianxin Lv ◽  
...  

2018 ◽  
Vol 243 (14) ◽  
pp. 1133-1140
Author(s):  
Ling Chen ◽  
Ting Zhang ◽  
Qiuli Liu ◽  
Mei Tang ◽  
Yu’e Yang ◽  
...  

Buformin is a commonly used hypoglycemic agent, and numerous studies have shown that buformin has potent antitumor effects in several malignancies. In this study, we aimed to assess the cytotoxic effect of buformin combined with ionizing radiation (IR) on two human cervical cancer cell lines (Hela and Siha). Cytotoxicity was detected by colony formation assays; impacts on the cell cycle and apoptosis were detected by flow cytometric analyses. Changes in histone H2AX (γ-H2AX) phosphorylation and impacts on the AMPK/S6 pathway were also explored. Our data show that the combination of buformin and IR had a much stronger antiproliferative effect and resulted in more apoptosis than did buformin or IR alone. Combination treatment with a low dose of buformin (10 µM) and IR (4 Gy) caused G2/M-phase cell cycle arrest. Consistent with these findings, Western blotting showed that the combination of buformin and IR activated AMPK and suppressed S6. In addition, delayed disappearance of γ-H2AX was detected by immunofluorescence in cervical cancer cells treated with buformin plus IR. Taken together, the data indicate that the combination of a low concentration of buformin and IR increases the radiosensitivity of cervical cancer cells via cell cycle arrest and inhibition of DNA repair. Based on these results, we strongly support the use of buformin as an effective agent for improving IR treatment efficiency in the context of cervical cancer. Impact statement Our idea originated in the thought of discovering new effects of old drugs. Although this study is a basic research, it is very close to clinical treatment. Flow cytometry and immunofluorescence were used to verify that buformin increases radiosensitivity. We aimed to address one of the thorniest problems in treatment process. Based on discovering new effects of old drugs, it is feasible to use buformin as an anticancer drug in clinical application. This will provide new ideas for clinical treatment.


Author(s):  
Kwangkho Kim ◽  
Ohman Kwon ◽  
Tae Ryu ◽  
Cho‑Rok Jung ◽  
Janghwan Kim ◽  
...  

2019 ◽  
Vol 21 (7) ◽  
Author(s):  
Mamadou Amadou Diallo ◽  
Alix Sausset ◽  
Audrey Gnahoui‐David ◽  
Adeline Ribeiro E Silva ◽  
Aurélien Brionne ◽  
...  

2019 ◽  
Vol 25 (1) ◽  
Author(s):  
Sungha Lee ◽  
Jung Yoon Ho ◽  
Jing Jing Liu ◽  
Hyewon Lee ◽  
Jae Young Park ◽  
...  

Sign in / Sign up

Export Citation Format

Share Document