title: Flagellar duplication and migration during the Trichomonas vaginalis cell cycle.
abstract: Trichomonas vaginalis is a flagellated protozoan, a representative of 1 of the earliest known eukaryotic lineages. Trichomonas vaginalis lacks centrioles but possesses basal bodies. We report here the cell cycle-dependent flagellar dynamics of T. vaginalis. By immunofluorescence, we found that T. vaginalis flagella duplicated during S-phase, segregated toward the nuclear poles, and then emanated from the spindle poles at mitosis. This behavior strongly parallels that of centrioles and other spindle pole-associated structures variously termed centrosomes, spindle pole bodies, or microtubule organizing centers. These observations support the hypothesis that flagellar forces may have provided motile forces for spindle pole alignment in an ancestral eukaryote.
authors.affiliation: Department of Urology, School of Medicine, University of Washington, Seattle 98195, USA.
authors.forename: Y
authors.initials: Y
authors.lastname: Zuo
authors.forename: D E
authors.initials: DE
authors.lastname: Riley
authors.forename: J N
authors.initials: JN
authors.lastname: Krieger
mesh_terms: D000818:Animals; D002453:Cell Cycle; D005407:Flagella / Q000502:physiology* / Q000648:ultrastructure; D005434:Flow Cytometry; D005455:Fluorescent Antibody Technique; D006801:Humans; D007399:Interphase; D008297:Male; D008938:Mitosis; D009068:Movement; D008941:Spindle Apparatus / Q000502:physiology; D014245:Trichomonas Infections / Q000469:parasitology; D014246:Trichomonas vaginalis / Q000166:cytology* / Q000302:isolation & purification / Q000648:ultrastructure; D014404:Tubulin / Q000032:analysis; D014526:Urethritis / Q000469:parasitology
chemical_list: D014404:Tubulin