GONUTS has been updated to MW1.31 Most things seem to be working but be sure to report problems.

Have any questions? Please email us at ecoliwiki@gmail.com

PMID:18299575

From GONUTS
Jump to: navigation, search
Citation

Shah, AS, Farmen, SL, Moninger, TO, Businga, TR, Andrews, MP, Bugge, K, Searby, CC, Nishimura, D, Brogden, KA, Kline, JN, Sheffield, VC and Welsh, MJ (2008) Loss of Bardet-Biedl syndrome proteins alters the morphology and function of motile cilia in airway epithelia. Proc. Natl. Acad. Sci. U.S.A. 105:3380-5

Abstract

Mutations in a group of genes that contribute to ciliary function cause Bardet-Biedl syndrome (BBS). Most studies of BBS have focused on primary, sensory cilia. Here, we asked whether loss of BBS proteins would also affect motile cilia lining the respiratory tract. We found that BBS genes were expressed in human airway epithelia, and BBS2 and BBS4 localized to cellular structures associated with motile cilia. Although BBS proteins were not required for ciliogenesis, their loss caused structural defects in a fraction of cilia covering mouse airway epithelia. The most common abnormality was bulges filled with vesicles near the tips of cilia. We discovered this same misshapen appearance in airway cilia from Bbs1, Bbs2, Bbs4, and Bbs6 mutant mice. The structural abnormalities were accompanied by functional defects; ciliary beat frequency was reduced in Bbs mutant mice. Previous reports suggested BBS might increase the incidence of asthma. However, compared with wild-type controls, neither airway hyperresponsiveness nor inflammation increased in Bbs2(-/-) or Bbs4(-/-) mice immunized with ovalbumin. Instead, these animals were partially protected from airway hyperresponsiveness. These results emphasize the role of BBS proteins in both the structure and function of motile cilia. They also invite additional scrutiny of motile cilia dysfunction in patients with this disease.

Links

PubMed PMC2265193 Online version:10.1073/pnas.0712327105

Keywords

Animals; Bardet-Biedl Syndrome/pathology; Cell Shape; Cilia/chemistry; Cilia/pathology; Cilia/physiology; Group II Chaperonins; Humans; Hypersensitivity/etiology; Male; Mice; Mice, Knockout; Microtubule-Associated Proteins/genetics; Molecular Chaperones/genetics; Proteins/genetics; Respiratory Mucosa/pathology

Significance

Annotations

Gene product Qualifier GO ID GO term name Evidence Code with/from Aspect Notes Status


See also

References

See Help:References for how to manage references in GONUTS.