Project description:We induced reprogramming by mES and 5C medium, and collected mRNA profiles of the GFP+ and GFP- reprogramming cells sorted by FACS. We found that 5C iPSCs showed differences with mES iPSCs, with different influences on GFP+ and GFP- cells on MET. And we picked the 5C iPSCs single colony, cultured with naive and primed medium. We showed that 5C iPSCs could be converted to naive and primed state respectively.
Project description:A series of MCF-7 variants were previously developed that are estrogen-dependent for growth (MCF-7:WS8 cells), or resistant to estrogen deprivation/vulnerable to fast (MCF-7:5C) and delayed (MCF-7:2A) E2-inducible apoptosis. To identify miRNAs associated with aromatase inhibitor (AI)-resistance and vulnerability to E2-induced apoptosis, estrogen deprivation-resistant 5C and 2A cells were compared to estrogen-dependent WS8 cells and among each other.
Project description:Wilm’s tumor(WT) is the most common malignant renal tumor in children, representing approximately 6-14% of all childhood cancers and about 95% of all pediatric renal malignancies. SKI-5C is a newly developed Sphk1 inhibitor. This small molecular inhibitor was firstly reported at 2009 by Wang et al. This study investigated the antitumor activity of SKI-5C in SK-NEP-1 cells. SKI-5C inhibited cell proliferation of SK-NEP-1 cells in a dose-dependent manner. Annexin V, Tunel and Hochest 33342 staining analysis showed that SKI-5C-treated cells showed more apoptotic features compared with the control.
Project description:Drug resistance poses a major challenge to ovarian cancer treatment. Understanding mechanisms of drug resistance is important for finding new therapeutic targets. In the present work, a cisplatin-resistant ovarian cancer cell line A2780-DR was established with a resistance index of 6.64. The cellular accumulation of cisplatin was significantly reduced in A2780-DR cells as compared to A2780 cells consistent with the general character of drug resistance. Quantitative proteomic analysis identified 340 differentially expressed proteins between A2780 and A2780-DR cells, which involve in diverse cellular processes, including metabolic process, cellular component biogenesis, cellular processes and stress responses. Expression levels of Ras-related proteins Rab 5C and Rab 11B in A2780-DR cells were lower than those in A2780 cells as confirmed by real-time quantitative PCR and western blotting. The short hairpin (sh)RNA-mediated knockdown of Rab 5C in A2780 cells resulted in markedly increased resistance to cisplatin whereas overexpression of Rab 5C in A2780-DR cells increases sensitivity to cisplatin, demonstrating that Rab 5C-dependent endocytosis plays an important role in cisplatin resistance. Our results also showed that expressions of glycolytic enzymes PKM, GPI, Aldolase, LDH, and PGK were down-regulated in drug resistant cells, indicating drug resistance in ovarian cancer is directly associated with a decrease in glycolysis. Furthermore, it was found that glutathione reductase were up-regulated in A2780-DR, while vimentin, HSP90, and Annexin A1 and A2 were down-regulated. Taken together, our results suggest that drug resistance in ovarian cancer cell line A2780 is caused by multifactorial traits, including the down-regulation of Rab 5C-dependent endocytosis of cisplatin, glycolytic enzymes and vimentin, and up-regulation of antioxidant proteins, suggesting Rab 5C is a potential target for treatment of drug-resistant ovarian cancer. This constitutes a further step towards a comprehensive understanding of drug resistance in ovarian cancer.
Project description:We examined how each chemical contributed to hepatocyte revitalization by removing each component of the 5C induction cocktail individually. We then compared deach chemical contributed to hepatocyte revitalization by removing each component of the 5C induction cocktail individually