Translocase of the outer mitochondrial membrane complex subunit 20 (TOMM20) facilitates cancer aggressiveness and therapeutic resistance in chondrosarcoma.
Publication/Presentation Date
12-1-2020
Abstract
Chondrosarcoma is the second most common primary bone malignancy, representing one fourth of all primary bone sarcomas. It is typically resistant to radiation and chemotherapy treatments. However, the molecular mechanisms that contribute to cancer aggressiveness in chondrosarcomas remain poorly characterized. Here, we studied the role of mitochondrial transporters in chondrosarcoma aggressiveness including chemotherapy resistance. Histological grade along with stage are the most important prognostic biomarkers in chondrosarcoma. We found that high-grade human chondrosarcoma tumors have higher expression of the mitochondrial protein, translocase of the outer mitochondrial membrane complex subunit 20 (TOMM20), compared to low-grade tumors. TOMM20 overexpression in human chondrosarcoma cells induces chondrosarcoma tumor growth in vivo. TOMM20 drives proliferation, resistance to apoptosis and chemotherapy resistance. Also, TOMM20 induces markers of epithelial to mesenchymal transition (EMT) and metabolic reprogramming in these mesenchymal tumors. In conclusion, TOMM20 drives chondrosarcoma aggressiveness and resistance to chemotherapy.
Volume
1866
Issue
12
First Page
165962
Last Page
165962
ISSN
1879-260X
Published In/Presented At
Roche, M. E., Lin, Z., Whitaker-Menezes, D., Zhan, T., Szuhai, K., Bovee, J. V. M. G., Abraham, J. A., Jiang, W., Martinez-Outschoorn, U., & Basu-Mallick, A. (2020). Translocase of the outer mitochondrial membrane complex subunit 20 (TOMM20) facilitates cancer aggressiveness and therapeutic resistance in chondrosarcoma. Biochimica et biophysica acta. Molecular basis of disease, 1866(12), 165962. https://doi.org/10.1016/j.bbadis.2020.165962
Disciplines
Medicine and Health Sciences
PubMedID
32920118
Department(s)
Hematology-Medical Oncology Division
Document Type
Article