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Updated: Feb 11, 2026

Author Spotlight: RNA FISH for Locating lncRNA-SNHG6 in Osteosarcoma Cells
Published on: June 16, 2023
Circular RNA circNASP modulates the malignant behaviors in osteosarcoma via miR-1253/FOXF1 pathway
Lipeng Huang1, Mangmang Chen1, Jun Pan2
1Department of Orthopaedic Surgery, Wenzhou Central Hospital, The DingLi Clinical Institute of Wenzhou Medical University, Wenzhou 325000, PR China.
Abstract:
Increasing evidences demonstrate that circular RNAs (circRNAs) serve as essential regulators in various human diseases, including cancer. However, the study on circRNA function in osteosarcoma (OS) is just emerging. In the present study, we screened out a novel circRNA termed circNASP which was significantly upregulated in OS tissues compared to adjacent normal tissues. We found that circNASP knockdown dramatically inhibited the proliferation, cell cycle progression and invasion of OS cells. Moreover, we showed that circNASP expression was positively correlated with tumor size and metastasis in OS patients. In terms of mechanism, we found that circNASP acts as a sponge of miR-1253 targeting FOXF1 in OS cells. By inhibiting miR-1253 availability, circNASP promoted FOXF1 expression. Rescue assays indicated that inhibition of miR-1253 could significantly reverse the effects of circNASP knockdown on OS cell proliferation and invasion while restoration of FOXF1 rescued the proliferation and invasion of OS cells transfected with miR-1253 mimics. Taken together, our findings demonstrated that circNASP contributes to malignant behaviors of OS cells by miR-1253/FOXF1 pathway, which suggested circNASP/miR-1253/FOXF1axis might be a potential therapeutic target.
Insights
Circular RNAs (circRNAs) are key in cancer. This study reveals circNASP promotes osteosarcoma (OS) growth and spread by sponging miR-1253, increasing FOXF1 expression, suggesting a new therapeutic target.
Area of Science:
- Molecular Biology
- Oncology
- Genetics
Background:
- Circular RNAs (circRNAs) are increasingly recognized as crucial regulators in human diseases, particularly cancer.
- Research into circRNA function in osteosarcoma (OS) is a developing field.
Purpose of the Study:
- To investigate the role of a novel circRNA, circNASP, in osteosarcoma.
- To elucidate the underlying molecular mechanism of circNASP in OS progression.
Main Methods:
- Screening and quantification of circNASP expression in OS tissues.
- Functional assays including circNASP knockdown and rescue experiments.
- Mechanism investigation involving miRNA sponging and target gene analysis (miR-1253 and FOXF1).
Main Results:
- circNASP was significantly upregulated in OS tissues and correlated with tumor size and metastasis.
- circNASP knockdown inhibited OS cell proliferation, cell cycle progression, and invasion.
- circNASP functions as a miR-1253 sponge, upregulating FOXF1 expression.
Conclusions:
- circNASP promotes malignant behaviors in osteosarcoma cells via the circNASP/miR-1253/FOXF1 pathway.
- The circNASP/miR-1253/FOXF1 axis represents a potential therapeutic target for osteosarcoma.
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