Ontology highlight
ABSTRACT:
PROVIDER: PRJNA1065932 | ENA |
REPOSITORIES: ENA
Dataset's files
| Action | DRS | |||
|---|---|---|---|---|
| SRR27597024_1.fastq.gz | Fastqsanger.gz | |||
| SRR27597024_2.fastq.gz | Fastqsanger.gz | |||
| SRR27597025_1.fastq.gz | Fastqsanger.gz | |||
| SRR27597025_2.fastq.gz | Fastqsanger.gz | |||
| SRR27597026_1.fastq.gz | Fastqsanger.gz |
Items per page: 5 1 - 5 of 78 |
Similar Datasets
Project description:Homologous-recombination deficiency (HRD) is closely related to PARPi benefit in ovarian cancer (OC). The capacity of BRCA1 promoter methylation to predict prognosis and HRD status remains unclear. We aimed to correlate BRCA1 promoter methylation levels in patients with high-grade OC to HRD status and clinical behavior to assess its clinical relevance.
2023-04-10 | GSE229315 | GEO
Project description:HS-10502 is a Poly(ADP-ribose) polymerase 1 (PARP1)-specific selective inhibitor. The purpose if this study is to assess the safety, tolerability, pharmacokinetics (PK), and efficacy of HS-10502 in subjects with homologous recombination repair (HRR) gene mutant or homologous recombination deficiency (HRD) positive advanced solid tumors.
| 9330 | ecrin-mdr-crc
Project description:Ovarian cancer is a global problem, is typically diagnosed at a late stage and has no effective screening strategy. Platinum-based chemotherapy or Poly(ADP-ribose) polymerase inhibitors (PARPis) treatment are most frequently applied for ovarian cancer patients who are inoperable and in the advanced stage. The recognition of homologous recombination deficiency (HRD) as a biomarker to predict the effect of Platinum-based or PARPis treatment. WGS and WES can detect tumor HRD status but have several disadvantages which restrict their clinical application. My choice HRD CDx and Foundation Focus CDx are approved by FDA for HRD detection, however, whether they are applicable to the Chinese population or not is unknown. In this study, we created an SNP-based Tg-NGS panel to fill in gaps in Chinese patients’ HRD screening. Our results showed that the panel is cost and time-saving compared with WGS, but equivalent with SNP microarray on CNV and HRD detection. In summary, this newly developed kit is promising in clinical application to guide ovarian cancer and even other cancer types therapy.
2023-02-21 | GSE203509 | GEO
Project description:BRCA1 mutations are a hallmark of hereditary ovarian cancer, strongly linked to deficiencies in homologous recombination (HR) DNA repair and impaired DNA replication fork protection. However, its roles in cancer progression beyond maintaining genomic integrity remain poorly understood. Through metabolomics approaches, we found BRCA1-deficiency strikingly increased choline metabolism. Loss of BRCA1 promotes choline uptake through upregulating choline transporter-like protein 4 (CTL4). BRCA1 directly binds and recruits EZH2-mediated H3K27Me3 deposition to CTL4 promoter. CTL4 was therefore overexpressed in ovarian cancer tissues with BRCA1 mutations. Furthermore, BRCA1-deficiency significantly promotes ovarian cancer invasion, while inhibition of CTL4 reverses the high metastatic potential of BRCA1-deficient ovarian cancer cells, suggesting the functionality and specificity of CTL4 as a therapeutic target. Additionally, we discovered that phosphocholine, the choline metabolite increased by CTL4 overexpression, interacted with and stabilized the epithelial-to-mesenchymal transition inducer FAM3C in BRCA1-deficient ovarian cancer cells. Importantly, we identified a potent CTL4 inhibitor, DT-13, which significantly reduces choline metabolism and effectively suppresses metastasis in BRCA1-deficient ovarian cancers. Therefore, our study uncovers a mechanism underlying metastasis in BRCA1-deficient cancers and identifies CTL4 as a therapeutic target for metastatic ovarian cancer patients with BRCA1 mutations.
2025-06-16 | GSE289967 | GEO
Project description:BRCA1 mutations are a hallmark of hereditary ovarian cancer, strongly linked to deficiencies in homologous recombination (HR) DNA repair and impaired DNA replication fork protection. However, its roles in cancer progression beyond maintaining genomic integrity remain poorly understood. Through metabolomics approaches, we found BRCA1-deficiency strikingly increased choline metabolism. Loss of BRCA1 promotes choline uptake through upregulating choline transporter-like protein 4 (CTL4). BRCA1 directly binds and recruits EZH2-mediated H3K27Me3 deposition to CTL4 promoter. CTL4 was therefore overexpressed in ovarian cancer tissues with BRCA1 mutations. Furthermore, BRCA1-deficiency significantly promotes ovarian cancer invasion, while inhibition of CTL4 reverses the high metastatic potential of BRCA1-deficient ovarian cancer cells, suggesting the functionality and specificity of CTL4 as a therapeutic target. Additionally, we discovered that phosphocholine, the choline metabolite increased by CTL4 overexpression, interacted with and stabilized the epithelial-to-mesenchymal transition inducer FAM3C in BRCA1-deficient ovarian cancer cells. Importantly, we identified a potent CTL4 inhibitor, DT-13, which significantly reduces choline metabolism and effectively suppresses metastasis in BRCA1-deficient ovarian cancers. Therefore, our study uncovers a mechanism underlying metastasis in BRCA1-deficient cancers and identifies CTL4 as a therapeutic target for metastatic ovarian cancer patients with BRCA1 mutations.
2025-06-16 | GSE289966 | GEO
Project description:41 breast cancer patients with known functional homologous recombination status (matched normal and tumor genomes, n=82)
| EGAD00001008027 | EGA
Project description:High grade serous ovarian cancer (HGSC) is frequently characterized by homologous recombination (HR) DNA repair deficiency, and while most such tumors are sensitive to initial treatment, acquired resistance is common. We undertook a multi-omics approach to interrogate the molecular diversity in end-stage disease, using multiple autopsy samples collected from 15 women with HR-deficient HGSC. Patients had polyclonal disease, and several resistance mechanisms were identified within most patients, including reversion mutations and HR restoration by other means. We also observed frequent whole genome duplication, and global changes in immune composition with evidence of immune escape. This analysis highlights diverse evolutionary changes within HGSC that conspire to evade therapy and ultimately overwhelm individual patients. Methylation profiling was done on 29 end stage high grade serous ovarian cancer samples. 38 primary tumours, 6 autopsy tumours and 7 fallopian tube normals from GSE65820 were also used as part of the cohort.
2022-11-12 | GSE217673 | GEO
Project description:Deficiency in homologous recombination repair (HRR) is frequently associated with hormone-responsive cancers. Epithelial ovarian cancer (EOC) is a typical hormone-related tumor, with defects of HRR in up to half of cases. However, whether there are molecular connections between estrogen signaling and HRR deficiency in EOC remains unknown. Here we report an inverse correlation between estrogen signaling and HRR activity in EOC. Genome-wide mapping of ERα reveals ERα co-bindings with co-repressor CtBP, especially on many HRR gene loci, in EOC cells but not in breast cancer cells. Consistently, depleting ERα in EOC cells up-regulates HRR activity and HRR gene expression. Importantly, estrogen signaling enhances the sensitivity of ovarian cancer cells to chemotherapy agents in vitro and in vivo. Large-scale analyses further indicate that estrogen replacement and ERα expression are associated with favorable survival of EOC patients. These findings characterize a novel role of ERα in mediating the molecular connection between hormone and HRR in EOC, and suggest that estrogen signaling may improve the treatment outcome of EOC patients.
2019-06-26 | GSE116005 | GEO
Project description:Deficiency in homologous recombination repair (HRR) is frequently associated with hormone-responsive cancers. Epithelial ovarian cancer (EOC) is a typical hormone-related tumor, with defects of HRR in up to half of cases. However, whether there are molecular connections between estrogen signaling and HRR deficiency in EOC remains unknown. Here we report an inverse correlation between estrogen signaling and HRR activity in EOC. Genome-wide mapping of ERα reveals ERα co-bindings with co-repressor CtBP, especially on many HRR gene loci, in EOC cells but not in breast cancer cells. Consistently, depleting ERα in EOC cells up-regulates HRR activity and HRR gene expression. Importantly, estrogen signaling enhances the sensitivity of ovarian cancer cells to chemotherapy agents in vitro and in vivo. Large-scale analyses further indicate that estrogen replacement and ERα expression are associated with favorable survival of EOC patients. These findings characterize a novel role of ERα in mediating the molecular connection between hormone and HRR in EOC, and suggest that estrogen signaling may improve the treatment outcome of EOC patients.
2019-06-26 | GSE115481 | GEO
Project description:High grade serous ovarian cancer (HGSC) is frequently characterized by homologous recombination (HR) DNA repair deficiency, and while most such tumors are sensitive to initial treatment, acquired resistance is common. We undertook a multi-omics approach to interrogate the molecular diversity in end-stage disease, using multiple autopsy samples collected from 15 women with HR-deficient HGSC. Patients had polyclonal disease, and several resistance mechanisms were identified within most patients, including reversion mutations and HR restoration by other means. We also observed frequent whole genome duplication, and global changes in immune composition with evidence of immune escape. This analysis highlights diverse evolutionary changes within HGSC that conspire to evade therapy and ultimately overwhelm individual patients.
2022-11-12 | GSE217672 | GEO