Ferrari SM, Fallahi P, La Motta C, Bocci G, Corrado A, Materazzi G, Galleri D, Piaggi S, Danesi R, Da Settimo F, Miccoli P, Antonelli A. Antineoplastic activity of the multitarget tyrosine kinase inhibitors CLM3 and CLM94 in medullary thyroid cancer in vitro.
Surgery 2014;
156:1167-76. [PMID:
25151558 DOI:
10.1016/j.surg.2014.05.005]
[Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2013] [Accepted: 05/12/2014] [Indexed: 12/21/2022]
Abstract
BACKGROUND
We report the antineoplastic and anti-angiogenic activity of the pyrazolo[3,4-d]pyrimidine derivative CLM3 and the cyclic amide CLM94, both multiple tyrosine kinase inhibitors (TKIs), in human primary medullary thyroid cancer (P-MTC) cells, and in vitro in the medullary thyroid cancer (MTC) cell lines TT (harboring a RET C634W activating mutation) and MZ-CRC-1 (carrying the MEN2B RET mutation Met891Thr).
METHODS
The antiproliferative and proapoptotic effects of CLM3 and CLM94 (1, 5, 10, 30, and 50 μmol/L) were tested in P-MTC cells obtained at operation, and in TT cells. In addition, the antiproliferative effects of CLM3 and CLM94 (0.005, 0.05, 0.5, and 5 μmol/L) were tested in TT and MZ-CRC-1 cells after 7 days of treatment to compare the results with those previously reported in the literature.
RESULTS
CLM3 and CLM94 (30 or 50 μmol/L) inhibited (P < .01) the proliferation of the P-MTC cells, TT cells, and MZ-CRC-1 cells and increased the level of apoptosis in a dose-dependent manner at 10, 30, and 50 μmol/L (P < .001), while having no effect on migration or invasion. The inhibition of proliferation by CLM3 and CLM94 was similar among P-MTC cells with/without RET mutations, and similar effects were observed regarding the increased level of apoptosis. Furthermore, CLM3 and CLM94 significantly decreased vascular endothelial growth factor-A expression in TT cells.
CONCLUSION
The antitumor activities of the multiple TKIs CLM3 and CLM94 were demonstrated in both primary MTC cultures as well as 2 established MTC cell lines in vitro, opening an avenue for future clinical evaluations.
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