TGM2 knockdown reverses cisplatin chemoresistance in osteosarcoma.

TGM2 knockdown reverses cisplatin chemoresistance in osteosarcoma. Int J Mol Med. 2018 Jul 04;: Authors: Li C, Cai J, Ge F, Wang G Abstract In the past decades, chemotherapy has resulted in improved outcomes for patients with osteosarcoma. However, resistance to chemotherapy often leads to poor prognoses. Cisplatin is a standard drug for osteosarcoma therapy, and chemoresistance to cisplatin in osteosarcoma limits the effectiveness of chemotherapy drugs. Transglutaminase 2 (TGM2) is a member of the transglutaminase family, and it is reported to be associated with chemoresistance in various types of cancer. The present study aimed to investigate the function of TGM2 in regulating chemosensitivity of osteosarcoma cells to cisplatin. For in vitro experiments, a cisplatin‑resistant osteosarcoma cell line (Saos2‑CIS‑R) was established, and TGM2 was demonstrated to be upregulated in the resistant Saos2‑CIS‑R cells compared with the normal Saos2 cells. The present study also revealed that TGM2 was associated with chemoresistance to cisplatin in osteosarcoma cells, and knockdown of TGM2 enhanced their chemosensitivity. In addition, TGM2 was demonstrated to affect the chemosensitivity of osteosarcoma cells via regulation of the activation of mitogen‑activated protein kinase and AKT serine/threonine kinase pathways. Expression of BCL2 apoptosis regulator, BCL2 associated X and caspase‑3 was also involved in chemoresistance deve...
Source: International Journal of Molecular Medicine - Category: Molecular Biology Authors: Tags: Int J Mol Med Source Type: research