SINYAL INTRASEL PEMICU REORGANISASI SITOSKELETON SEL MAST PADA REAKSI HIPERSENSITIVITAS TIPE I

Safari Wahyu Jatmiko

Abstract

Sel mast mempunyai peranan yang penting dalam terjadinya reaksi hipersensitivitas tipe I. Degranulasi sel mast diyakini mendasari peran sel mast dalam memunculkan reaksi tersebut. Proses degranulasi sel mast terjadi karena berpindahnya granula sel mast dari sitoplasma menuju ke membran sel dan memuntahkan isi granula ke lingkungan sekitarnya. Proses transport ini sangat ditentukan oleh reorganisasi  sitoskeleton yang terdiri atas mikrotubulus, aktin mikrofilamen, dan intermediate filament. Reorganisasi sitoskeleton diawali dengan aktifasi sel mast oleh ikatan antara alergen dengan IgE yang menempel pada FcεR. Aktfasi sel mast diperkuat dengan adanya ikatan antara c-Kit pada permukaan membran sel mast dengan c-Kit ligan. Aktifasi ini menimbulkan serangkaian proses intrasel yang memicu inisiasi reorganisasi.

Keywords

sel mast, sinyal intrasel, sitoskeleton, Hipersensitivitas tipe I

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References

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