TSitologiya i Genetika 2023, vol. 57, no. 3, 57-59
Cytology and Genetics 2023, vol. 57, no. 3, 282–289, doi: https://www.doi.org/10.3103/S0095452723030027

TGF-β1 transactivates ADAMTS-2 (ADAM Metallopeptidase With Thrombospondin Type 1 Motif 2) in Saos-2 Cells through canonical and non-canonical pathways

Alper M.

  • Department of Translational Oncology Institute of Oncology, Dokuz Eylül University, 35330 Balçova, İzmir/Turkey
  • Osteosarcoma is a malignant bone tumor that is common in children and adolescents. The tumor microenvironment is highly effective in the development and progression of osteosarcoma. Transforming growth factor-β (TGF-β) is one of the most abundant cytokines in the tumor microenvironment, and can regulate tumor initiation, progression, and metastasis promoting extracellular matrix (ECM) remodeling and epithelial-mesenchymal transition (EMT). ADAMTS (ADAM Metallopeptidase With Thrombospondin Motifs) proteases have critical functions in normal and tumor microenvironments by processing individual proteins in the ECM. ADAMTSs contribute to tissue remodeling, inflammation, cell migration and, angiogenesis. Among the family members, ADAMTS-2 is a well-known example for ECM remodeling which cleaves the N-terminal propeptide of procollagen and promotes correct collagen fibrillogenesis. Cytokines can regulate normal and tumor microenvironments by affecting ECM proteins. In this study, the effect of TGF-β1, on the transcriptional regulation of the ADAMTS-2, which is an essential enzyme for ECM remodeling was investigated in Saos-2 cells. TGF-β1 upregulated ADAMTS-2 expression both at mRNA and protein levels. Transient transfection assays revealed that TGF-β1 was also induced ADAMTS-2 promoter activity. According to the pathway inhibition studies, both canonical and non-canonical signaling pathways and post-translational mechanisms were responsible for the induction. These studies will contribute to future research on ADAMTS-2 mediated ECM remodeling in osteosarcoma.

    Keywords: ADAMTS-2, TGF-β1, Osteosarcoma, Saos-2, Transcriptional Regulation

    TSitologiya i Genetika
    2023, vol. 57, no. 3, 57-59

    Current Issue
    Cytology and Genetics
    2023, vol. 57, no. 3, 282–289,
    doi: 10.3103/S0095452723030027

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