| RRC ID |
21912
|
| 著者 |
Olguín P, Glavic A, Mlodzik M.
|
| タイトル |
Intertissue mechanical stress affects Frizzled-mediated planar cell polarity in the Drosophila notum epidermis.
|
| ジャーナル |
Curr Biol
|
| Abstract |
Frizzled/planar cell polarity (Fz/PCP) signaling controls the orientation of sensory bristles and cellular hairs (trichomes) along the anteroposterior axis of the Drosophila thorax (notum). A subset of the trichome-producing notum cells differentiate as "tendon cells," serving as attachment sites for the indirect flight muscles (IFMs) to the exoskeleton. Through the analysis of chascon (chas), a gene identified by its ability to disrupt Fz/PCP signaling under overexpression conditions, and jitterbug (jbug)/filamin, we show that maintenance of anteroposterior planar polarization requires the notum epithelia to balance mechanical stress generated by the attachment of the IFMs. chas is expressed in notum tendon cells, and its loss of function disturbs cellular orientation at and near the regions where IFMs attach to the epidermis. This effect is independent of the Fz/PCP and fat/dachsous systems. The chas phenotype arises during normal shortening of the IFMs and is suppressed by genetic ablation of the IFMs. chas acts through jbug/filamin and cooperates with MyosinII to modulate the mechanoresponse of notum tendon cells. These observations support the notion that the ability of epithelia to respond to mechanical stress generated by one or more interactions with other tissues during development and organogenesis influences the maintenance of its shape and PCP features.
|
| 巻・号 |
21(3)
|
| ページ |
236-42
|
| 公開日 |
2011-2-8
|
| DOI |
10.1016/j.cub.2011.01.001
|
| PII |
S0960-9822(11)00002-9
|
| PMID |
21276726
|
| PMC |
PMC3057393
|
| MeSH |
Animals
Cell Polarity*
Contractile Proteins / metabolism
Drosophila / cytology*
Drosophila / metabolism
Drosophila Proteins / metabolism*
Filamins
Frizzled Receptors / metabolism*
Genes, Insect / physiology
Membrane Proteins / metabolism
Microfilament Proteins / metabolism
Myosin Heavy Chains / metabolism
Signal Transduction
Stress, Physiological*
|
| IF |
9.601
|
| 引用数 |
32
|
|
WOS 分野
|
BIOCHEMISTRY & MOLECULAR BIOLOGY
CELL BIOLOGY
|
| リソース情報 |
| ショウジョウバエ |
UAS-mwh-dsRNAi |
