Effect of G0s2 and Rgs16 knockdown on hepatic transcriptome
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ABSTRACT:
PROVIDER: PRJNA751237 | ENA |
REPOSITORIES: ENA
Dataset's files
| Action | DRS | |||
|---|---|---|---|---|
| SRR15315200_1.fastq.gz | Fastqsanger.gz | |||
| SRR15315200_2.fastq.gz | Fastqsanger.gz | |||
| SRR15315201_1.fastq.gz | Fastqsanger.gz | |||
| SRR15315201_2.fastq.gz | Fastqsanger.gz | |||
| SRR15315202_1.fastq.gz | Fastqsanger.gz |
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Project description:We identified 2 leading gene candidates (G0s2 and Rgs16) in response to circadian, diet and genetic manipulations by a large-scale transcriptome analysis. To examine the impact of G0s2 and Rgs16 on liver functions, we carried out adenovirus-mediated liver-specific knockdown of both genes and performed RNA-seq analysis.
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Project description:Hepatocellular carcinoma is the third leading cause of cancer death worldwide, and it is necessary to elucidate the mechanism of hepatocarcinogenesis. Circadian clock systems have been related in cell cycle and carcinogenesis. In this study, hepatocarcinogenesis induced by DEN administration in mice was inhibited by knockdown of G0s2 at early stage in carcinogenesis. In addition, the circadian expression of G0s2 in mouse liver was regulated by RARM-NM-1 controlled by clock genes and ATRA. Moreover, mice administered both ATRA and DEN were not induced hepatocellular carcinoma, and decreased the expression of G0s2 at second day after the initiation of administration. These findings suggest that the control of G0s2 expression is important in carcinogenesis and G0s2 might be the novel target for prevention, diagnosis and treatment of hepatocellular carcinoma. Differential gene expression between G0s2 siRNA or Control siRNA transfected primary hepatocyte was measured after 24 hr of transfection.
2013-08-01 | E-GEOD-39288 | biostudies-arrayexpress
Project description:Hepatocellular carcinoma is the third leading cause of cancer death worldwide, and it is necessary to elucidate the mechanism of hepatocarcinogenesis. Circadian clock systems have been related in cell cycle and carcinogenesis. In this study, hepatocarcinogenesis induced by DEN administration in mice was inhibited by knockdown of G0s2 at early stage in carcinogenesis. In addition, the circadian expression of G0s2 in mouse liver was regulated by RARα controlled by clock genes and ATRA. Moreover, mice administered both ATRA and DEN were not induced hepatocellular carcinoma, and decreased the expression of G0s2 at second day after the initiation of administration. These findings suggest that the control of G0s2 expression is important in carcinogenesis and G0s2 might be the novel target for prevention, diagnosis and treatment of hepatocellular carcinoma.
2013-08-01 | GSE39288 | GEO
Project description:G0/G1 switch gene 2 (G0S2) is known to inhibit lipolysis through inhibition of adipose triglyceride lipase (ATGL). Although G0S2 has also been proposed to be involved in cancer progression, this role appears complex, and mechanisms are unclear. We recently reported a role for G0S2 in ER+ breast cancer suppression as low G0S2 expression correlated with increased recurrence after antiestrogen therapy and increased G0S2 expression sensitized ER+ breast cancer cells to tamoxifen and PI3K/mTOR inhibitors. In this report we dissect the role of G0S2 in ER+ versus ER- breast cancer. Overexpression of G0S2 in ER- breast cancer cells increased cell proliferation while G0S2 overexpression in ER+ breast cancer cells decreased cell proliferation. Transcriptome analysis revealed that G0S2 mediated distinct but overlapping transcriptional responses in ER- and ER+ cells. G0S2 reduced genes associated with an epithelial phenotype, especially in ER- cells, including CDH1, ELF3, STEAP4 and TACSTD2 suggesting promotion of the epithelial-mesenchymal transition (EMT). G0S2 also repressed estrogen signaling and estrogen receptor target gene signatures, especially in ER+ cells, including TFF1 and TFF3. In addition, G0S2 overexpression increased cell migration in ER- cells and increased estrogen deprivation sensitivity in ER+ cells. Interestingly, two genes downstream of ATGL in fat utilization, HMGCS1 and HMGCS2, that are also rate-limiting in steroid hormone biosynthesis, were downregulated in G0S2 overexpressing ER+ cells. In addition, HSD17B11, a gene that converts estradiol to its less estrogenic derivative, estrone, was highly upregulated in G0S2 overexpressing ER+ cells, suggesting G0S2 overexpression has a negative effect of estradiol production and maintenance. High levels of estrone were confirmed to be present in G0S2 overexpressing cells. High expression of G0S2 and HSD17B11 was associated with improved relapse free survival in breast cancer patients while high expression of HMGSC1 was associated with poor survival. In addition, the expression of G0S2 positively and negatively correlated respectively, with expression of HSD17B11 and HMGSC1 in patient samples. Finally, we deleted G0S2 in breast cancer prone MMTV-PyMT mice that have been hypothesized to be partially estrogen sensitive during early stages of tumorigenesis but develop ER- tumors. In this context, G0S2 functioned as a tumor promoter, with G0S2 null mice demonstrating a slight increase in tumor latency and decrease in tumor weight and a larger inhibitory effect on tumor metastasis. Our data indicates a complex role for G0S2 in breast cancer, dependent on ER status, that may be mediated in part by suppression of the estrogen signaling pathway.
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Project description:Abnormal blood vessel growth in the eye is a leading cause of vision loss globally, particularly in diseases like diabetic retinopathy where the vitreous plays a crucial but poorly understood role in disease progression. While we know the vitreous can stimulate blood vessel growth, the specific molecular mechanisms remain unclear. Here we show that a protein called G0S2 (G0/G1 switch gene 2) serves as a key regulator of blood vessel growth in response to normal vitreous. Through comprehensive gene analysis, we discovered that G0S2 levels increase significantly when blood vessel cells are exposed to normal vitreous. The importance of G0S2 is highlighted by our finding that uveal melanoma patients with higher G0S2 levels had poorer survival rates. When we removed G0S2 from blood vessel cells, they no longer responded to vitreous stimulation, confirming its critical role. Notably, we identified an existing drug that can target G0S2, potentially offering a new therapeutic approach. This discovery of G0S2's role and its potential therapeutic targeting opens new avenues for treating eye diseases characterized by abnormal blood vessel growth, while also providing a valuable biomarker for predicting disease progression in eye cancer patients
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