scholarly journals Effect of Zebularine in Comparison to and in Combination with Trichostatin A on CIP/KIP Family (p21Cip1/Waf1/Sdi1, p27Kip1, and p57Kip2), DNMTs (DNMT1, DNMT3a, and DNMT3b), Class I HDACs (HDACs 1, 2, 3) and Class II HDACs (HDACs 4, 5, 6) Gene Expression, Cell Growth Inhibition and Apoptosis Induction in Colon Cancer LS 174T Cell Line

2020 ◽  
Vol 21 (7) ◽  
pp. 2131-2139 ◽  
Author(s):  
Masumeh Sanaei ◽  
Fraidoon Kavoosi
2020 ◽  
Vol 9 ◽  
pp. 1899
Author(s):  
Masumeh Sanaei ◽  
Fraidoon Kavoosi ◽  
Sedighe Nasiri

Background: Dysregulation of the cell cycle has been reported in various cancers. Inactivation of the cyclin-dependent kinases inhibitors (CDKIs), CIP/KIP family, such as p21Cip1/Waf1/Sdi1, p27Kip1, and p57Kip2 genes because of hypermethylation has been shown in several cancers. Treatment with DNA demethylating agent 5-aza-2ˈ-deoxycytidine (5-Aza-CdR) has been indicated that affect genomic methylation and resulting in silenced genes reactivation in colon cancer. Previously, we evaluated the effect of 5-Aza-CdR on DNA methyltransferase 1 (DNMT1) gene expression in hepatocellular carcinoma (HCC) which encouraged us to design the current study. The present study aimed to evaluate the effect of 5-Aza-CdR on p21Cip1/Waf1/Sdi1, p27Kip1, p57Kip2, and DNAT1 genes expression, cell growth inhibition and apoptosis induction in colon cancer SW 480 and SW 948 cell lines. Materials and Methods: The effect of 5-aza-CdR on the SW 480 and SW 948 cells growth, apoptosis induction and genes expression were assessed by MTT assay, flow cytometry, and real-time quantitative reverse transcription-polymerase chain reaction (qRT-PCR) analysis respectively. Results: 5-aza-CdR inhibited cell growth as time- and dose-dependent manner significantly (P<0.001). The agent reactivated p15INK4, p16INK4, p18INK4, and p19INK4 genes expression and induced apoptosis at a concentration of 5 μM significantly. Besides, 5-aza-CdR had a more significant effect on the SW 480 cell line in comparison to SW 948 cell line. Conclusion: 5-Aza-CdR plays a key role in the up-regulation of p21Cip1/Waf1/Sdi1, p27Kip1, and p57Kip2 and down-regulation of DNMT1 genes resulting in cell growth inhibition and apoptosis induction. [GMJ.2020;9:e1899] DOI:10.31661/gmj.v9i0.1899


2018 ◽  
Vol 40 (2) ◽  
pp. 95-100 ◽  
Author(s):  
M Sanaei ◽  
F Kavoosi ◽  
O Mansoori

Aim: Acetylation levels of histones are the result of the balance between histone acetyltransfrases and histone deacetylases activities, which plays an important role in chromatin remodeling and regulation of gene expression. Histone deacetylases inhibitors such as valproic acid, vorinostat have attracted interest because of their ability to induce differentiation and apoptosis of cancer cells. The current study was designed to assess the effect of valproic acid in comparison to and in combination with vorinostat on cell growth inhibition and apoptosis induction in the human colon cancer SW48 cells. Materials and Methods: The colon cancer SW48 cells were seeded and treated with various doses of valproic acid and vorinostat and MTT assay and flow cytometric assay were done to determine cell viability and cell apoptosis, respectively. Results: All concentrations of both agents reduced viability significantly in a dose- and time-dependent fashion (p < 0.004). Both compounds, either single or combined agents, induced apoptosis significantly, whereas the ratio of the apoptotic cells treated with combined agents was more significant than the single. Conclusion: Our findings suggest that vaproic acid and vorinostat can significantly inhibit cell growth and induce apoptosis in colon cancer SW48 cells.


2018 ◽  
Vol 2018 ◽  
pp. 1-11 ◽  
Author(s):  
Md. Shihabul Islam ◽  
Md. Sifat Rahi ◽  
Chowdhury Arif Jahangir ◽  
Md Habibur Rahman ◽  
Israt Jerin ◽  
...  

Cancer is a class of diseases characterized by uncontrolled cell growth. The current treatment options of cancer are radiotherapy, chemotherapy, hormone therapy, and surgery, where all of them have unpleasant side effects. Due to their adverse side effects, it is challenging to develop new drug for cancer treatment. Hence, the scientists are trying to seek for noble compounds from natural sources to treat cancer. Therefore, in the present investigation, a widely consumable vegetableBasella albawas subjected to evaluate its antiproliferative effect along with molecular signaling of apoptosis in Ehrlich ascites carcinoma (EAC) cell line. Cell growth inhibition was determined by haemocytometer whereas apoptosis of cancer cells were studied by florescence microscope using Hoechst-33342 stain and result was supported by DNA fragmentation and certain cancer related genes expression through PCR analysis.B. albaleaf and seed extract exhibit a considerable scavenging activity in comparison to a standard antioxidant BHT. Moreover, the leaf and seed extracts were able to agglutinate 2% RBC of goat blood at minimum 12.5μg/ml and 50.0μg/ml concentration, respectively. A significant cytotoxic activity was also found in both leaf and seed extract. In haemocytometic observation, the leaf and seed extracts exhibit about 62.54±2.41% and 53.96±2.34% cell growth inhibition, respectively, whereas standard anticancer drug Bleomycin showed 79.43±1.92% growth inhibition. Morphological alteration under fluorescence microscope showed nuclear condensation and fragmentation which is the sign of apoptosis. Apoptosis induction was also confirmed by DNA laddering in leaf and seed treated EAC cells. Upregulation of the tumor suppressor gene P53and downregulation of antiapoptotic gene Bcl-2 enumerate apoptosis induction. Therefore, current study manifested that leaf and seed extracts ofB. albahave antiproliferative activity against EAC cell line and can be a potent source of anticancer agents to treat cancer.


2009 ◽  
Vol 32 (8) ◽  
pp. 1399-1405 ◽  
Author(s):  
Xue-Lian Tang ◽  
Xin-Ying Yang ◽  
Hyun-Ju Jung ◽  
Sung-Yeon Kim ◽  
Suk-Yul Jung ◽  
...  

2016 ◽  
Vol 39 (3) ◽  
pp. 308-312
Author(s):  
Tomomi Akita ◽  
Michiko Horiguchi ◽  
Chihiro Ozawa ◽  
Hiroshi Terada ◽  
Chikamasa Yamashita

2016 ◽  
Vol 68 ◽  
pp. 38-50 ◽  
Author(s):  
Yueliang Zhao ◽  
Daming Fan ◽  
Beibei Ru ◽  
Ka-Wing Cheng ◽  
Shuting Hu ◽  
...  

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