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Author Spotlight: Impact of Intergenic Interactions on Disease-Identifying Dark Biomarkers
Published on: March 1, 2024
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hsa_circ_0007919 promotes pancreatic cancer metastasis by modulating Sp1-mediated THBS1 transcription
Xiao Ma1,2,3, Lei Xu1,2,4, Shuai Gong1
1Department of General Surgery, Affiliated Hospital of Xuzhou Medical University, Xuzhou, China.
Summary
Circular RNAs (circRNAs) promote pancreatic cancer (PC) metastasis by inhibiting THBS1 expression. Upregulated hsa_circ_0007919 facilitates PC cell migration and invasion, representing a potential therapeutic target for pancreatic cancer.
Area of Science:
- Oncology
- Molecular Biology
- Genetics
Background:
- Circular RNAs (circRNAs) are implicated in cancer development but their role in pancreatic cancer (PC) metastasis is unclear.
- Understanding circRNA functions is crucial for developing novel PC therapies.
Purpose of the Study:
- To investigate the role and mechanism of hsa_circ_0007919 in pancreatic cancer metastasis.
- To evaluate hsa_circ_0007919 as a potential prognostic biomarker and therapeutic target for PC.
Main Methods:
- Differential expression analysis of circRNAs in PC tissues using transcriptome sequencing.
- Validation of hsa_circ_0007919 expression and prognostic value via qRT-PCR and Kaplan-Meier analysis.
- In vitro and in vivo gain/loss-of-function assays, RNA immunoprecipitation, and chromatin immunoprecipitation assays.
Main Results:
- hsa_circ_0007919 was significantly upregulated in PC tissues and associated with advanced TNM stage, lymph node metastasis, and poor prognosis.
- Knockdown of hsa_circ_0007919 suppressed PC cell migration, invasion, and in vivo metastasis.
- Overexpression of hsa_circ_0007919 promoted PC cell metastasis.
- Mechanistically, hsa_circ_0007919 recruits Sp1 to inhibit THBS1 transcription, promoting PC metastasis.
Conclusions:
- hsa_circ_0007919 promotes pancreatic cancer metastasis by downregulating THBS1 expression.
- hsa_circ_0007919 serves as a potential biomarker for PC prognosis and a therapeutic target.
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