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Cancer-specific miRNAs Extracted from Tissue-exudative Ex-tracellular Vesicles in Ovarian Clear Cell Carcinoma

ABSTRACT: Cancer-specific miRNAs Extracted from Tissue-exudative Ex-tracellular Vesicles in Ovarian Clear Cell Carcinoma

PROVIDER: PRJNA884425 | ENA |

REPOSITORIES: ENA

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Cancer-specific miRNAs Extracted from Tissue-exudative Ex-tracellular Vesicles in Ovarian Clear Cell Carcinoma

Project description:Ovarian clear cell carcinomas (OCCs) arise from endometriotic cysts that many women develop. Because the prognosis for OCC is poor, there is a need to identify biomarkers for early detection of OCC. Extracellular vesicles have attracted attention as biomarker carriers. This study aimed to identify cancer-specific miRNAs as novel OCC biomarkers using tissue-exudative extracellular vesicles (Te-EVs). Te-EVs were collected from patients with OCC on one side and a normal ovary on the other side. RNA sequencing was performed to identify cancerspecific miRNAs in Te-EVs. We identified tissue-specific miRNAs in the EVs secreted by OCC tissues. These EV miRNAs can be used as biomarkers for the early diagnosis and detection of OCC.

2022-10-01 | GSE214239 | GEO

Cancer-Specific miRNAs Extracted from Tissue-Exudative Extracellular Vesicles in Ovarian Clear Cell Carcinoma.

Project description:Ovarian clear cell carcinomas (OCCs) arise from endometriotic cysts that many women develop. Biomarkers for early OCC detection need to be identified. Extracellular vesicles have attracted attention as biomarker carriers. This study aims to identify cancer-specific miRNAs as novel OCC biomarkers using tissue-exudative extracellular vesicles (Te-EVs). Te-EVs were collected from four patients with OCC on one side and a normal ovary on the other side. Microarray analysis was performed to identify cancer-specific miRNAs in Te-EVs. Serum samples obtained before and after surgery from patients with OCC and atypical endometrial hyperplasia (AEH) (controls) were compared using real-time PCR to examine changes in the detected EV miRNA levels. Thirty-seven miRNAs were >2-fold upregulated on the OCC side compared with the normal ovarian side. We selected 17 miRNAs and created specific primers for 12 of these miRNAs. The levels of six EV miRNAs were significantly decreased in postoperative OCC serum compared to those in preoperative OCC serum. In contrast, no significant change was observed between the pre and postoperative values in the control group. We identified OCC tissue-specific miRNAs in the EVs secreted by OCC tissues. These EV miRNAs have potential for use as biomarkers for the early diagnosis and detection of OCC.

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Urinary Extracellular Vesicles RNA Profile in Clear Cell Renal Cell Carcinoma as Biomarker

Project description:Background: Renal cell carcinoma (RCC) accounts for about 2% of all cancers. Renal biopsy is the gold standard among the diagnostic tools, but it is invasive and not suitable for all patients. Therefore, new reliable and non-invasive biomarkers for ccRCC detection are required. Secretion of extracellular vesicles (EVs), containing RNA molecules that can be transferred between cells, seems to be a general characteristic of malignant transformation. Consistently, cancer-derived EVs are enriched in the blood, urine and various malignant effusions of cancer patients. Therefore, urinary samples can be a non-invasive approach for discovering diagnostic biomarkers. Methods: We enrolled 33 clear-cell RCC (ccRCC) patients and 22 healthy subjects (HS), age and sex-matched, for urine collection and extracellular vesicles isolation by differential centrifugation. Transcriptional profiles of urinary EVs from 12 patients with ccRCC and 11 HS were generated using the Illumina HumanHT-12 v4 BeadChip oligonucleotide arrays. Microarray analysis led to the identification of RNA that were then validated using RT-qPCR. Results: We showed for the first time that urinary exosomal shuttle RNA (esRNA) was significantly different in ccRCC patients compared to HS and we identified three EVs esRNA involved in the tumor biology that are potentially suitable as non-invasive biomarkers. GSTA1, CEBPA and PCBD1 RNA levels decreased in urinary EVs of patients compared to HS. After 1 month post-operation, the levels of RNA increased to reach the normal level. Conclusions: This study suggests, for the first time, the potential use of the RNA content of urinary EVs to provide a non-invasive first step to diagnose the ccRCC. Total RNA obtained from urinary extracellular vesicles isolated from ccRCC patients and healthy subjects.

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Project description:We demonstrated that adipose tissue derived extracellular vesicles from diabetic subjects could induce cognitive impairment. miRNAs in adipose tissue-derived EVs could be transferred to the hippocampus, which promotes synaptic damage and cognitive impairment. To identify the specific subtypes of miRNAs that responsible for cognitive impairment, we examined the sRNA profiles of EVs extracted from adipose tissue of nondiabetic and diabetic subjects by RNA deep sequencing.

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