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Phospho‐ΔNp63α‐responsive microRNAs contribute to the regulation of necroptosis in squamous cell carcinoma upon cisplatin exposure
Author(s) -
Ratovitski Edward A.
Publication year - 2015
Publication title -
febs letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.593
H-Index - 257
eISSN - 1873-3468
pISSN - 0014-5793
DOI - 10.1016/j.febslet.2015.04.020
Subject(s) - cisplatin , necroptosis , microrna , cancer research , microbiology and biotechnology , ripk1 , chemistry , biology , programmed cell death , chemotherapy , biochemistry , apoptosis , gene , genetics
This study shows that specific microRNAs differentially regulated by ΔNp63α in cisplatin‐sensitive and resistant squamous cell carcinoma (SSC) cells of larynx and tongue affect the expression of members of the necroptotic pathway CYLD, RIPK1, and MLKL. Different degrees of protein interaction between necroptotic signaling intermediates were also observed in SCC cells sensitive or resistant to cisplatin. Modulation of RIPK1 with miR‐101‐3p mimic or inhibitor, as well as with siRNA, or chemical inhibitors was shown to affect sensitivity of SCC cells to cisplatin. This is the first report showing the modulatory effect of ΔNp63α‐responsive microRNAs on the specific members of necroptotic pathway in SCC tumor cells variably responding to platinum chemotherapy.