Gene expression changes in 786-O cells in response to Everolimus, SGI-1027, or their combination.
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ABSTRACT:
PROVIDER: PRJNA1011338 | ENA |
REPOSITORIES: ENA
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Project description:Renal cell carcinoma (RCC) is one of the most common malignant tumors of urinary system. The Food and Drug Administration (FDA) has approved everolimus for the treatment of advanced RCC, but r everolimus resistance limits its application in clinic. We here reported the DNA methyltransferase 1 (DNMT1) inhibitor SGI-1027 as an inducer of methuosis, a type of cell death form independent of apoptosis. Additionally, SGI-1027 and everolimus worked in concert to suppress the proliferation, migration, and invasion of renal cancer cells while also inducing apoptosis and GSDME-dependent pyroptosis. In vitro transplanted tumor mice models, everolimus combined with SGI-1027 played a significant inhibitory effect on the growth of renal cancer tumors with good tolerance. The objective of this study is to explore the mechanism of the synergistic effect of everolimus and SGI-1027. We demonstrated through analysis of transcriptome high-throughput sequencing data that lysosomes were strongly linked with the synergistic effect of everolimus and SGI-1027 at the transcriptional level, which provides a new strategy for everolimus resistance and the treatment of advanced RCC.
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Project description:We present transcriptome profiling of 786-0 renal cell carcinoma cell lines both with and without Everolimus, an mTOR inhibitorhbn
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Project description:RNA-Seq analysis was carried out to investigate the transcriptomic changes associated with the development of in vivo everolimus resistance and the effects of CDK8/19 inhibition on the development of resistance in MDA-MB-468 TNBC xenografts. In one study (short-term), tumor samples were collected after 30-40 days of treatment with vehicle or everolimus, when the tumor growth was still suppressed by the mTOR inhibitor. In another study (long-term), tumor samples were collected after 60-153 days of treatment with vehicle, everolimus, CDK8/19 inhibitor SNX631 or their combination, when tumors treated with everolimus but not with the drug combination developed resistance.
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2013-11-12 | E-MEXP-3802 | biostudies-arrayexpress
Project description:Patients with metastatic or recurrent rhabdomyosarcoma, the most common childhood soft tissue sarcoma, continue to do poorly and new treatments are needed. In this study we evaluated a novel combination therapy using a dna methyltransferase inhibitor, SGI-110, and the SRC family kinase inhibitor, Dasatinib. To understand the transcriptional changes that occur after treatment with SGI-110 with and without Dasatinib we performed RNAseq on two human RMS cell lines (Rh30 and RD) after 5 days of drug treatment.
2021-04-30 | GSE147240 | GEO
Project description:Therapeutic efficacy of first-generation hypomethylating agents (HMAs) is limited in elderly acute myeloid leukemia (AML) patients. Therefore, combination strategies with targeted therapies are urgently needed. Here, we discover that priming with SGI-110 (guadecitabine), a next-generation HMA, sensitizes AML cells to ASTX660, a novel antagonist of cellular Inhibitor of Apoptosis Protein 1 and 2 (cIAP1/2) and X-linked IAP (XIAP). Importantly, SGI-110 and ASTX660 synergistically induced cell death in a panel of AML cell lines as well as in primary AML samples while largely sparing normal CD34+ human progenitor cells, underlining the translational relevance of this combination. Unbiased transcriptome analysis revealed that SGI-110 alone or in combination with ASTX660 upregulated the expression of key regulators of both extrinsic and intrinsic apoptosis signaling pathways such as TNFRSF10B (DR5), FAS and BAX. Individual knockdown of the death receptors TNFR1, DR5 and FAS significantly reduced SGI-110/ASTX660-mediated cell death, whereas blocking antibodies for TRAIL or FASLG failed to provide protection. Also, TNF-blocking antibody Enbrel had little protective effect on SGI110/ASTX660-induced cell death. Further, SGI-110 and ASTX660 acted in concert to promote cleavage of caspase-8 and BID, thereby providing a link between extrinsic and intrinsic apoptotic pathways. Consistently, sequential treatment with SGI-110 and ASTX660 triggered loss of mitochondrial membrane potential (MMP) and BAX activation, which contributes to cell death as BAX silencing significantly protected from SGI-110/ASTX660-mediated apoptosis. Together, these events culminated in activation of caspases-3/-7, nuclear fragmentation and cell death. In conclusion, SGI-110 and ASTX660 cooperatively induced apoptosis in AML cells by engaging extrinsic and intrinsic apoptosis pathways, highlighting the therapeutic potential of this combination for AML.
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Project description:Purpose: DDL and LMS are two common subtypes of soft tissue sarcoma, a rare group of diseases for which new treatments are needed. Chemotherapy remains the standard option for advanced disease. Targeting CDK4/6 in DDL and mTOR in LMS is of biologic interest. When combined, the CDK4 inhibitor ribociclib and the mTOR inhibitor everolimus, have shown synergistic growth inhibition in multiple tumor models, suggesting that this combination could be beneficial in patients.Methods: This was a single arm, open label, multi-center phase II study of the combination of ribociclib and everolimus. Patients were enrolled into one of two cohorts: DDL or LMS with intact Rb. The primary endpoint was progression free rate (PFR) at 16 weeks. Secondary endpoints included progression free (PFS) and overall survival, safety and biomarker analyses. Results: In the DDL cohort, 33.3% (95% CI 15.6%-55.3%) of patients were progression free at 16 weeks. Median PFS in this cohort was 15.4 weeks (95% CI, 8-36 weeks) with 2 partial responses. In the LMS cohort the PFR at 16 weeks was 29.2% (95% CI 12.6%-51.1%). Median PFS in this cohort was 15.7 weeks (95% CI 7.7-NA). Most common toxicities included fatigue (66.7%), anorexia (43.8%) and hyperglycemia (43.8%). Concordance between Rb testing methodologies was poor.Conclusions: The combination of ribociclib and everolimus demonstrates activity in DDL with prolonged stable disease (≥16 weeks) meeting the primary endpoint. Notably partial responses were observed. The primary endpoint was not reached in the LMS cohort. The combination was well tolerated with expected side effects.
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Project description:786-0 is a cell line derived from a clear cell renal carcinoma. Previous studies have shown that the 786-O cell line harbors an inactivating mutation in the von-Hippel Lindau (VHL) gene. Mutations in the VHL gene occur in the majority of sporadic clear cell renal cell. To determine how inactivation of the VHL affects cellular functions, we created a derivative of 786-0, which we call 786-VHL in which a functional allele of VHL has been introduced back into the 786-O cell line. The renal cell carcinoma cell line 786-0, which harbors a mutated allele of VHL, was compared to a cell line derived from 786-0, termed 786-VHL, that contains a functional allele of VHL. Genes whose expression characteristics were dependent on functional VHL were identified.
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Project description:786-0 is a cell line derived from a clear cell renal carcinoma. Previous studies have shown that the 786-O cell line harbors an inactivating mutation in the von-Hippel Lindau (VHL) gene. Mutations in the VHL gene occur in the majority of sporadic clear cell renal cell. To determine how inactivation of the VHL affects cellular functions, we created a derivative of 786-0, which we call 786-VHL in which a functional allele of VHL has been introduced back into the 786-O cell line.
2010-06-10 | GSE22256 | GEO
Project description:Genome-wide DNA methylation profiles of SGI-110-treated ovarian cancer xenografts were obtained using next generation Illumina Infinium 450k assay which includes over 450,000 GpG sites. DNA from 6 samples were hybridized to the Illumina's Infinium HumanMethylation 450 BeadChip
2014-10-02 | E-GEOD-55613 | biostudies-arrayexpress