IDH1 Mutation Induces HIF-1α and Confers Angiogenic Properties in Chondrosarcoma JJ012 Cells. (14th February 2022)

• Record Type: Journal Article
• Authors: Hu, Xiaoyu; Li, Luyuan; Eid, Josiane E.; Liu, Chao; Yu, Jinming; Yue, Jinbo; Trent, Jonathan C.
• Other Names: Su Ting Academic Editor.
• Is Part Of: Disease markers. Volume 2022(2022)
• Publication Date: 2022-02-14
• Subjects: Diagnosis -- Periodicals; Biochemical markers -- Periodicals; Pathology -- Periodicals; 616
• DOI: 10.1155/2022/7729968
• Languages: English
• ISSNs: 0278-0240

Abstract

Abstract : Chondrosarcoma is a group of primary bone cancers that arise from transformed cells of chondrocytic lineage. Tumor recurrence and metastasis are devastating for patients with chondrosarcoma since there are no effective treatment options. IDH mutations occur in over 50% of tumors from patients with conventional or dedifferentiated chondrosarcomas and represent an attractive target for therapy. However, their role in the pathogenesis of chondrosarcoma remains largely unknown. In this study, we sought to determine the association of IDH mutation and HIF-1 α in chondrosarcoma. We used the chondrosarcoma JJ012 cell line and its derived CRISPR/Cas9 mutant IDH1 (IDH1 mut ) knockout (KO) cells. RNA-Seq data analysis revealed downregulation of several HIF-1 α target genes upon loss of IDH1 mut . This was associated with reduced HIF-1 α levels in the IDH1 mut KO cells and tumors. Loss of IDH1 mut also attenuated the expression of angiogenic markers in tumor tissues and abrogated the angiogenic capacity of JJ012 cells. Moreover, we observed that exogenous expression of HIF-1 α significantly promoted anchorage-independent colony-formation by IDH1 mut KO cells. These results suggest IDH1 mutation confers angiogenic and tumorigenic properties of JJ012 cells by inducing HIF-1 α . Thus, the HIF pathway represents a promising candidate for combinatorial regimens to target IDH1 mutated chondrosarcomas.