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MT2A is an early predictive biomarker of response to chemotherapy and a potential therapeutic target in osteosarcoma.

ABSTRACT: Osteosarcoma is the most prevalent primary bone malignancy in children and young adults. Resistance to chemotherapy remains a key challenge for effective treatment of patients with osteosarcoma. The aim of the present study was to investigate the preventive role of metallothionein-2A (MT2A) in response to cytotoxic effects of chemotherapy. A panel of human and murine osteosarcoma cell lines, modified for MT2A were evaluated for cell viability, and motility (wound healing assay). Cell-derived xenograft models were established in mice. FFPE tumour samples were assessed by IHC. In vitro experiments indicated a positive correlation between half-maximal inhibitory concentration (IC50) for drugs in clinical practice, and MT2A mRNA level. This reinforced our previously reported correlation between MT2A mRNA level in tumour samples at diagnosis and overall survival in patients with osteosarcoma. In addition, MT2A/MT2 silencing using shRNA strategy led to a marked reduction of IC50 values and to enhanced cytotoxic effect of chemotherapy on primary tumour. Our results show that MT2A level could be used as a predictive biomarker of resistance to chemotherapy, and provide with preclinical rational for MT2A targeting as a therapeutic strategy for enhancing anti-tumour treatment of innate chemo-resistant osteosarcoma cells.

SUBMITTER: Mangelinck A

PROVIDER: S-EPMC6707240 | biostudies-literature | 2019 Aug

REPOSITORIES: biostudies-literature

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MT2A is an early predictive biomarker of response to chemotherapy and a potential therapeutic target in osteosarcoma.

Mangelinck Adèle A da Costa Maria Eugénia Marques MEM Stefanovska Bojana B Bawa Olivia O Polrot Mélanie M Gaspar Nathalie N Fromigué Olivia O

Scientific reports 20190823 1

Osteosarcoma is the most prevalent primary bone malignancy in children and young adults. Resistance to chemotherapy remains a key challenge for effective treatment of patients with osteosarcoma. The aim of the present study was to investigate the preventive role of metallothionein-2A (MT2A) in response to cytotoxic effects of chemotherapy. A panel of human and murine osteosarcoma cell lines, modified for MT2A were evaluated for cell viability, and motility (wound healing assay). Cell-derived xen ...[more]

PMID: 31444479

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Dataset Information

MT2A is an early predictive biomarker of response to chemotherapy and a potential therapeutic target in osteosarcoma.

Publications

MT2A is an early predictive biomarker of response to chemotherapy and a potential therapeutic target in osteosarcoma.

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