Proceedings of the PSK Conference (대한약학회:학술대회논문집)
- 2003.10b
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- Pages.93.3-94
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- 2003
Differential regulation of phospholipase $C\gamma$ isoforms through Fc$\varepsilon$ RI, high affinity IgE receptor
- Yoon, Eung-Joo (College of Pharmacy, Chonnam National University) ;
- Beom, Sun-Ryeo (College of Pharmacy, Chonnam National University) ;
- Kim, Kyeong-Man (College of Pharmacy, Chonnam National University)
- Published : 2003.10.01
Abstract
The signaling components of high affinity IgE receptor (Fc RI) were searched by yeast-hybrid screening of the cDNA library constructed from RBL-2H3 cells. The cytoplasmic part of the Fc RI- chain was found to specifically interact with PLC 2, and further comparatives studies were conducted focusing on the differential regulation of two PLC- isoforms through Fc RI. The inhibitors of Src, Syk, and protein kinase C similarly affected the tyrosine phosporylations of PLC 1 and PLC 2 but the inhibitors of PI3-kinase and p42/44 ERK effectively inhibited the activation of PLC 1 but not PLC 2. (omitted)
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