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Knockdown of lncRNA NR2F1-AS1 in gastric cancer cells

ABSTRACT: Knockdown of lncRNA NR2F1-AS1 in gastric cancer cells

PROVIDER: PRJNA761199 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	SRR15733970_1.fastq.gz	Fastqsanger.gz
	SRR15733970_2.fastq.gz	Fastqsanger.gz
	SRR15733971_1.fastq.gz	Fastqsanger.gz
	SRR15733971_2.fastq.gz	Fastqsanger.gz
	SRR15733972_1.fastq.gz	Fastqsanger.gz

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Knockdown of lncRNA NR2F1-AS1 in gastric cancer cells

Project description:Our data showed that NR2F1-AS1 functions oncogenic roles in gastric cancer (GC), but the underlying molecular mechanism remains largely unknown to date. To explore the function of lncRNA NR2F1-AS1 in gastric cancer, loss-of-function and RNA sequencing studies were performed in SGC7901 cell line. The results showed that depletion of NR2F1-AS1 significantly decreased the expression of VAMP7. Interestingly, VAMP7 was also a target gene of miR-29a-3p. Our data showed that NR2F1-AS1 promotes GC progression through regulating miR-29a/VAMP7 axis.

2021-10-07 | GSE183538 | GEO

Late recurrence-associated long non-coding RNA NR2F1 antisense 1 (NR2F1-AS1)

Project description:Long non-coding RNA NR2F1 antisense RNA1 (lncRNA NR2F1-AS1) was identified as the main candidate associated to late recurrence in ER-positive breast cancer clinical samples. Gain-of-function of NR2F1-AS1 induced the expression of dormancy-inducers BMP4 and DEC2, and upregulated pluripotency markers NANOG and OCT4. Representative pathways entailed to metastatic events such as HER2/Neu, hypoxia, EMT and inflammatory-response were also found enriched.

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Project description:Our data showed that ELF3-AS1 was a nuclear lncRNA, and its biofunction in cancers is largely unknown to date. To explore the function of lncRNA ELF3-AS1 in gastric cancer, loss-of-function study was performed in SGC7901 and AGS cell lines. RNA sequencing studies showed that the expression of almost all the histone coding genes were significantly increased after knocking down of ELF3-AS1 in SGC7901 and AGS cell lines.

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TUBA1C: a new potential target of LncRNA EGFR-AS1 promotes gastric cancer progression

Project description:Background: The lack of obvious symptoms of early gastric cancer (GC) as well as the absence of sensitive and specific biomarkers results in poor clinical outcomes. Tubulin is currently emerging as important regulators of the microtubule cytoskeleton and thus have a strong potential to be implicated in a number of disorders, however, its mechanism of action in gastric cancer is still unclear. Tubulin alpha-1C(TUBA1C) is a subtype of α-tubulin, high TUBA1C expression has been shown to be closely related to a poor prognosis in in various cancers,this study, for the first time, revealed the mechanism of TUBA1C promotes malignant progression of gastric cancer in vitro and in vivo. Methods: The expression of lncRNA EGFR-AS1 was detected in human GC cell lines by qRT–PCR. Mass spectrometry experiments following RNA pulldown assays found that EGFR-AS1 directly binds to TUBA1C, the CCK8, EdU, transwell, wound-healing, cell cycle assays and animal experiments were conducted to investigate the function of TUBA1C in GC. Combined with bioinformatics analyses, reveal interaction between Ki-67, E2F1, PCNA and TUBA1C by western blot. Rescue experiments furtherly demonstrated the relationship of EGFR-AS1and TUBA1C. Results: TUBA1C was proved to be a direct target of EGFR-AS1, TUBA1C promotes gastric cancer proliferation, migration and invasion by accelerating the progression of the cell cycle from the G1 phase to the S phase and activating the expression of oncogenes: Ki-67,E2F1 and PCNA. Conclusions: TUBA1C is a new potential target of LncRNA EGFR-AS1 promotes gastric cancer progression and could be a novel biomarker and therapeutic target for GC.

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Project description:In this study, we used miRNA sequencing to analyze and identify possible miRNAs that can be regulated by and ELF3-AS1 in gastric cancer. The results showed that lncRNA ELF3-AS1 knockdown decreased the expression of miR-33a/b and miR-203a. Due to miR-33a/b and miR-203a were able to target SNAI2 expression, and ELF3-AS1 knockdown significantly upregulates SNAI2 expression, we speculated ELF3-AS1 may negatively regulate SNAI2 expression through positively regulating the expression of miR-33a/b and miR-203a in GC.

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Project description:Knockdown of lncRNA ELF3-AS1 in two gastric cancer cell lines

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Project description:As one of the most abundant lncRNAs in cells, the biological function of lncRNA FGD5-AS1 remains largely unclear in cancers, especially in gastric cancer (GC). In addition, the reason for such high levels of FGD5-AS1 in cells remains unknown. In this study, FGD5-AS1 was proved to be a ZEB1-related lncRNA which was overexpressed and predicted poor prognosis in GC. Knockdown of FGD5-AS1 decreased GC proliferation in vitro and in vivo.

2023-02-23 | GSE214471 | GEO

Long Non-coding RNA NR2F1-AS1 Induces Breast Cancer Dormancy in Lungs by Regulating NR2F1 and ΔNp63

Project description:We show that the epithelial-like and mesenchymal-like subpopulations of breast cancer stem-like cells (BCSCs) demonstrate different levels dormancy and tumorigenicity in lungs. The long non-coding RNA (lncRNA) molecule NR2F1-AS1 (NAS1) is up-regulated in the dormant BCSC subpopulation, and functionally promotes tumor dissemination but reduces proliferation in lungs. Mechanically, NAS1 promotes internal ribosome entry site (IRES)-mediated NR2F1 translation, leading to inhibition of ΔNp63 transcription by NR2F1. Further, ΔNp63 downregulation results in epithelial-mesenchymal transition, reduced tumorigenicity and enhanced dormancy of cancer cells in lungs.

2023-04-23 | GSE149265 | GEO

Circulating long noncoding RNAs INHBA-AS1, MIR4435-2HG, CEBPA-AS1, and AK001058 in plasma serve as diagnostic markers for gastric cancer

Project description:Background: suitable diagnostic markers for cancers are urgently required in clinical practice. Long noncoding RNAs, which have been reported in many cancer types, are a potential new class of biomarkers for tumor diagnosis. Method: LncRNA gene expression profiles were analyzed in two pairs of human gastric cancer and adjacent non-tumor tissues by microarray analysis. Nine gastric cancer-associated lncRNAs were selected and assessed by quantitative real-time polymerase chain reaction in gastric tissues, and 5 of them were further analyzed in gastric cancer patients’plasma. Results: Five lncRNAs, including AK001058, INHBA-AS1, MIR4435-2HG, UCA1 and CEBPA-AS1 were validated to be increased in gastric cancer tissues. Furthermore, we found that plasma level of these five lncRNAs were significantly higher in gastric cancer patients compared with normal controls. By receiver operating characteristic analysis, we found that the combination of plasma lncRNAs with the area under the curve up to 0.921, including AK001058, INHBA-AS1, MIR4435-2HG, and CEBPA-AS1, is a better indicator of gastric cancer than their individual levels or other lncRNA combinations. Simultaneously, we found that the expression levels of a series of MIR4435-2HG fragments are different in gastric cancer plasma samples, but most of them higher than that in healthy control plasma samples. Conclusion: Our results demonstrate that certain lncRNAs, such as AK001058, INHBA-AS1, MIR4435-2HG, and CEBPA-AS1, are enriched in human gastric cancer tissues and significantly elevated in the plasma of patients with gastric cancer. These findings indicate that the combination of these four lncRNAs might be used as diagnostic or prognostic markers for gastric cancer patients.

2017-01-12 | GSE93512 | GEO

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