Genetic dissection of a Leishmania flagellar proteome demonstrates requirement for directional motility in sand fly infections
Genetic dissection of a Leishmania flagellar proteome demonstrates requirement for directional motility in sand fly infections
复制标题
利什曼原虫鞭毛蛋白质组的基因解剖表明白蛉感染需要定向运动
DOI:
10.1101/476994
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发表时间:
2018
期刊:
影响因子:
--
通讯作者:
Beneke T
中科院分区:
文献类型:
--
作者:
Beneke T
The protozoan parasiteLeishmaniapossesses a single flagellum, which is remodelled during the parasite’s life cycle from a long motile flagellum in promastigote forms in the sand fly to a short immotile flagellum in amastigotes residing in mammalian phagocytes. This study examined the protein composition andin vivofunction of the promastigote flagellum. Protein mass spectrometry and label free protein enrichment testing of isolated flagella and deflagellated cell bodies defined a flagellar proteome forL.mexicanapromastigote forms (available via ProteomeXchange with identifier PXD011057). This information was used to generate a CRISPR-Cas9 knockout library of 100 mutants to screen for flagellar defects. This first large-scale knockout screen in aLeishmaniasp. identified 56 mutants with altered swimming speed (52 reduced and 4 increased) and defined distinct mutant categories (faster swimmers, slower swimmers, slow uncoordinated swimmers and paralysed cells, including aflagellate promastigotes and cells with curled flagella and disruptions of the paraflagellar rod). Each mutant was tagged with a unique 17-nt barcode, providing a simple barcode sequencing (bar-seq) method for measuring the relative fitness ofL.mexicanamutantsin vivo. In mixed infections of the permissive sand fly vectorLutzomyia longipalpis, paralysed promastigotes and uncoordinated swimmers were severely diminished in the fly after defecation of the bloodmeal. Subsequent examination of flies infected with a single paralysed mutant lacking the central pair protein PF16 or an uncoordinated swimmer lacking the axonemal protein MBO2 showed that these promastigotes did not reach anterior regions of the fly alimentary tract. These data show thatL.mexicananeed directional motility for successful colonisation of sand flies.
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影响因子:
3.4
作者:
Mayer, Ulrich;Kueller, Alexander;Moehrlen, Frank
通讯作者:
Moehrlen, Frank
影响因子:
4
作者:
John A. Maga;Trevor Sherwin;S. Francis;Keith Gull;Jonathan H. LeBowitz
通讯作者:
Jonathan H. LeBowitz
影响因子:
1.5
作者:
Kraeva, Natalya;Ishemgulova, Aygul;Yurchenko, Vyacheslav
通讯作者:
Yurchenko, Vyacheslav
DOI:
10.1111/j.1550-7408.1989.tb01104.x
发表时间:
1989
期刊:
The Journal of protozoology
影响因子:
--
作者:
Warburg,A;Tesh,RB;McMahon-Pratt,D
通讯作者:
McMahon-Pratt,D
DOI:
10.1073/pnas.1703553114
发表时间:
2017
期刊:
Proceedings of the National Academy of Sciences
影响因子:
--
作者:
Vladimír Varga;F. Moreira;N. Portman;K. Gull
通讯作者:
K. Gull