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.jpg): Failed to open stream: No such file or directory in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 117 J+Cell+Biol
2014 ; 207
(1
): 123-37
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Chibby promotes ciliary vesicle formation and basal body docking during airway
cell differentiation
#MMPMID25313408
Burke MC
; Li FQ
; Cyge B
; Arashiro T
; Brechbuhl HM
; Chen X
; Siller SS
; Weiss MA
; O'Connell CB
; Love D
; Westlake CJ
; Reynolds SD
; Kuriyama R
; Takemaru K
J Cell Biol
2014[Oct]; 207
(1
): 123-37
PMID25313408
show ga
Airway multiciliated epithelial cells play crucial roles in the mucosal defense
system, but their differentiation process remains poorly understood. Mice lacking
the basal body component Chibby (Cby) exhibit impaired mucociliary transport
caused by defective ciliogenesis, resulting in chronic airway infection. In this
paper, using primary cultures of mouse tracheal epithelial cells, we show that
Cby facilitates basal body docking to the apical cell membrane through proper
formation of ciliary vesicles at the distal appendage during the early stages of
ciliogenesis. Cby is recruited to the distal appendages of centrioles via
physical interaction with the distal appendage protein CEP164. Cby then
associates with the membrane trafficking machinery component Rabin8, a guanine
nucleotide exchange factor for the small guanosine triphosphatase Rab8, to
promote recruitment of Rab8 and efficient assembly of ciliary vesicles. Thus, our
study identifies Cby as a key regulator of ciliary vesicle formation and basal
body docking during the differentiation of airway ciliated cells.