"Crosslinking of the high affinity receptor for IgE (FceRI) on the surface of mast cells and basophils initiates a series of biochemical events culminating in degranulation and release of mediators of allergic reactions. Early events include tyrosine phosphorylation of numerous signaling molecules, including kinases of the Src and Syk/Zap families, and rapid (within 1 min) changes in cell morphology. The link between aggregation of FceRI and changes in cell morphology remains enigmetic. In this proposal we will use rat basophilic leukemia (RBL) cells and isolated mast cells to determine physical and functional association of kinases with cytoskeletal components, mainly tubulins. Immunoblotting and immunoprecipitation techniques with monoclonal antibodies specific for the proteins under study will be used to determine kinases-cytoskeleton interactions. Electroporation of phosphorylated oligopeptides will be employed to determine these interactions under in vivo conditions."@en . . "V\u00FDznam cytoskeletu v aktivaci \u017E\u00EDrn\u00FDch bun\u011Bk"@cs . "6"^^ . "2814"^^ . . . "0"^^ . . "6"^^ . . . "1"^^ . . . "1694"^^ . "The role of cytoskeleton in mast cell activation"@en . . . . "Agregace receptor\u016F s vysokou afinitou pro IgE (FceRI) na povrchu \u017E\u00EDrn\u00FDch bun\u011Bk a basofil\u016F zahajuje serii biochemick\u00FDch d\u011Bj\u016F vedouc\u00EDch k degranulaci a uvoln\u011Bn\u00ED medi\u00E1tor\u016F alergick\u00FDch reakc\u00ED. Mezi \u010Dasn\u00E9 d\u011Bje pat\u0159\u00ED tyrosinov\u00E1 fosforylace \u0159ady sign\u00E1ln\u00EDch molekul, kter\u00E9 zahrnuj\u00ED kin\u00E1sy Src (p56/p53lyn and pp60c-src) a Syk/Zap rodiny, a rychl\u00E9 zm\u011Bny (v pr\u016Fb\u011Bhu 1 min) v bun\u011B\u010Dn\u00E9 morfologii. Vztah mezi agregac\u00ED FceRI a zm\u011Bnami v morfologii bun\u011Bk z\u016Fst\u00E1v\u00E1 neobjasn\u011Bn. V t\u00E9to grantov\u00E9 aplikaci pou\u017Eijeme bu\u0148ky basofiln\u00ED leukemia potkana (RBL) a izolovan\u00E9 \u017E\u00EDrn\u00E9 bu\u0148ky pro objasn\u011Bn\u00ED fyzik\u00E1ln\u00ED a funk\u010Dn\u00ED asociace kin\u00E1z s komponentami cytoskeletu v pr\u016Fb\u011Bhu bun\u011B\u010Dn\u00E9 aktivace. Imunoblotovac\u00ED a imunoprecipita\u010Dn\u00ED techniy s vyu\u017Eit\u00EDm monoklon\u00E1ln\u00EDch protil\u00E1tek proti studovan\u00FDm protein\u016Fm budou pou\u017Eity jako n\u00E1stroje pro anal\u00FDzy t\u011Bchto asociac\u00ED. Elektroporace fosforylovan\u00FDch aligopeptid\u016F do RBL bun\u011Bk p\u0159isp\u011Bje k ur\u010Den\u00ED zda k funk\u010Dn\u00EDm interakc\u00EDm kin\u00E1z a cytoskeletu doch\u00E1z\u00ED v podm\u00EDnk\u00E1ch in vivo."@cs . "0"^^ .