CPI-1189 attenuates effects of suspected neurotoxins associated with AIDS dementia: a possible role for ERK activation

2001 ◽  
Vol 893 (1-2) ◽  
pp. 95-103 ◽  
Author(s):  
Lynn Pulliam ◽  
Ian Irwin ◽  
Leonard Kusdra ◽  
Hans Rempel ◽  
William D. Flitter ◽  
...  
Keyword(s):  
2005 ◽  
Vol 16 (5) ◽  
pp. 2275-2284 ◽  
Author(s):  
Shengli Hao ◽  
Avery August

Polymerization of the actin cytoskeleton has been found to be essential for B-cell activation. We show here, however, that stimulation of BCR induces a rapid global actin depolymerization in a BCR signal strength-dependent manner, followed by polarized actin repolymerization. Depolymerization of actin enhances and blocking actin depolymerization inhibits BCR signaling, leading to altered BCR and lipid raft clustering, ERK activation, and transcription factor activation. Furthermore actin depolymerization by itself induces altered lipid raft clustering and ERK activation, suggesting that F-actin may play a role in separating lipid rafts and in setting the threshold for cellular activation.


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