RT Journal Article T1 Cross-talks between c-Kit and PKC isoforms in HMC-1560 and HMC-1560,816 cells. Different role of PKCd in each cellular line A1 Tobío Ageitos, Araceli A1 Alfonso Rancaño, María Amparo A1 Botana López, Luis Miguel K1 HMC-1 K1 PKC K1 c-kit K1 STI571 K1 PMA AB The c-kit inhibitor STI571 represents one of the most important treatments for patients with mastocytosis. However, intracellular pathways modulated by this compound are not completely defined. Here, STI571 effect on Protein Kinase C (PKC) regulation is determined in HMC-1 mast cell lines. STI571 activates PKCδ isoform resulting in HMC-1560 apoptosis. The apoptosis observed is PKCδ-dependent, since PKCδ-silencing avoids STI571 effect. c-kit inhibition implies nuclear PKCδ translocation characterized by a clear dependence on actin cytoskeleton integrity in HMC-1560 cell line, but not in HMC-1560,816. Therefore, PKCδ modulations can lead to a serious decrease in STI571 treatment-effectiveness PB Elsevier SN 0008-8749 YR 2014 FD 2014-12-23 LK http://hdl.handle.net/10347/34992 UL http://hdl.handle.net/10347/34992 LA eng NO Cellular Immunology (293) 2 (2015) Pages 104-112 NO The research leading to these results has received funding from the following FEDER cofunded-grants. From CDTI and Technological Funds, supported by Ministerio de Economía y Competitividad, AGL2012-40185-CO2-01 and Consellería de Cultura, Educación e Ordenación Universitaria, GRC2013-016, and through Axencia Galega de Innovación, Spain, ITC-20133020 SINTOX, IN852A 2013/16-3 MYTIGAL. From CDTI under ISIP Programme, Spain, IDI-20130304 APTAFOOD.From the European Union’s Seventh Framework Programme managed by REA – Research Executive Agency (FP7/2007-2013) under grant agreement Nos. 265409 μAQUA, 315285 CIGUATOOLS and 312184 PHARMASEA. Araceli Tobío Ageitos is supported by a fellowship from Fundación Juana de Vega, Spain DS Minerva RD 24 abr 2026