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Chinese Journal of Biotechnology ; (12): 133-141, 2019.
Artigo em Chinês | WPRIM | ID: wpr-771393

RESUMO

Cilia and flagella on eukaryotic cells are polarized organelles extending from the surfaces of cells, which participate not only in cell motility, but also in signal transduction and other processes. Structural or functional abnormalities of cilia can cause various human diseases, termed ciliopathies. Bardet-Biedl syndrome (BBS) is a ciliopathic human genetic disorder, and the pathogenesis is that mutated BBS genes result in abnormal cilia function. In order to study the pathogenic genes BBS8, we screened bbs8 mutant in Chlamydomonas reinhardtii and did a lot of physiology and biochemistry experiments. We affirmed that BBS8 protein was a cilia protein and had specific localization in the basal body by immunofluorescence (IF). The bbs8 mutant lost photokinesis, and it was defective in flagella shortening with drug induction. The results of silver staining and mass spectrometric analysis showed aberrant accumulation of flagellar proteins in the mutant flagella. We concluded that the BBS8 protein plays a significant role in flagellar membrane proteins transport, and the BBS8 protein might mediate retrograde transport to exert physiological function in the process.


Assuntos
Humanos , Síndrome de Bardet-Biedl , Chlamydomonas reinhardtii , Cílios , Flagelos , Transporte Proteico
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