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Published on: March 18, 2014
Identification and validation of programmed cell death-related genes in osteosarcoma: inhibiting CIB1 as a promising
Bin Hu1, Li Du2, Changchun Lu2
1Department of Orthopedics, Jinzhou Medical University Postgraduate Education Base, The Third People's Hospital of Sichuan Province, Chengdu, 610100, China.
Background:
This study explores programmed cell death (PCD)-related genes in osteosarcoma through bioinformatics and experimental validation.
Methods:
Analysis of datasets from the GEO and TCGA databases identified 5,327 differentially expressed genes (DEGs), among which 294 overlapped with PCD-related genes.
Results:
LASSO regression analysis identified six hub genes, and five of these (CIB1, CREB3L1, IL6R, TGFβ2, and TNFRSF10C) were further validated in osteosarcoma tissues. Notably, CIB1 exhibited significantly elevated expression and was selected for in-depth analysis. CIB1 downregulation inhibited osteosarcoma cell proliferation and invasion by inducing apoptosis and causing G2/M phase cell cycle arrest, and was associated with increased p53 expression, decreased phosphorylation of Akt and STAT3, and altered BCL2/BAX ratios, suggesting involvement of these pathways in the observed effects.
Conclusions:
In vitro experiments confirmed the tumor-suppressive role of CIB1 inhibition. These findings highlight CIB1 as a promising therapeutic target for osteosarcoma treatment.
Insights
This study identified CIB1 as a key gene in osteosarcoma. Inhibiting CIB1 suppresses tumor growth and invasion, suggesting it as a potential therapeutic target for osteosarcoma.
Area of Science:
- Oncology
- Molecular Biology
- Bioinformatics
Background:
- Osteosarcoma is a primary bone malignancy with a complex genetic landscape.
- Programmed cell death (PCD) pathways are crucial in cancer development and progression.
- Identifying novel therapeutic targets in osteosarcoma remains a critical challenge.
Purpose of the Study:
- To identify and validate programmed cell death (PCD)-related genes as potential therapeutic targets in osteosarcoma.
- To investigate the role of identified hub genes in osteosarcoma progression.
- To elucidate the molecular mechanisms underlying the function of key genes in osteosarcoma.
Main Methods:
- Bioinformatic analysis of gene expression datasets from GEO and TCGA databases.
- Identification of differentially expressed genes (DEGs) and their overlap with PCD-related genes.
- LASSO regression for hub gene identification and subsequent experimental validation in osteosarcoma tissues and cell lines.
Main Results:
- Over 5,000 DEGs were identified, with 294 overlapping PCD-related genes.
- Six hub genes were identified, with CIB1, CREB3L1, IL6R, TGFβ2, and TNFRSF10C validated.
- Downregulation of CIB1 inhibited osteosarcoma cell proliferation and invasion, induced apoptosis, caused G2/M cell cycle arrest, and modulated key signaling pathways (p53, Akt, STAT3, BCL2/BAX).
Conclusions:
- In vitro studies confirmed the tumor-suppressive function of CIB1 inhibition in osteosarcoma.
- CIB1 is a promising therapeutic target for osteosarcoma treatment.
- Targeting CIB1 may offer a novel strategy for managing osteosarcoma.
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