Publication Date:
2012-01-10
Description:
The centrosome, a cytoplasmic organelle formed by cylinder-shaped centrioles surrounded by a microtubule-organizing matrix, is a hallmark of animal cells. The centrosome is conserved and essential for the development of all animal species described so far. Here, we show that planarians, and possibly other flatworms, lack centrosomes. In planarians, centrioles are only assembled in terminally differentiating ciliated cells through the acentriolar pathway to trigger the assembly of cilia. We identified a large set of conserved proteins required for centriole assembly in animals and note centrosome protein families that are missing from the planarian genome. Our study uncovers the molecular architecture and evolution of the animal centrosome and emphasizes the plasticity of animal cell biology and development.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3347778/" target="_blank"〉〈img src="https://static.pubmed.gov/portal/portal3rc.fcgi/4089621/img/3977009" border="0"〉〈/a〉 〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3347778/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Azimzadeh, Juliette -- Wong, Mei Lie -- Downhour, Diane Miller -- Sanchez Alvarado, Alejandro -- Marshall, Wallace F -- GM077004/GM/NIGMS NIH HHS/ -- GM57260/GM/NIGMS NIH HHS/ -- R01 GM057260/GM/NIGMS NIH HHS/ -- R01 GM077004/GM/NIGMS NIH HHS/ -- R37 GM057260/GM/NIGMS NIH HHS/ -- Howard Hughes Medical Institute/ -- New York, N.Y. -- Science. 2012 Jan 27;335(6067):461-3. doi: 10.1126/science.1214457. Epub 2012 Jan 5.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Biochemistry and Biophysics, University of California-San Francisco, CA 94143, USA. juliette.azimzadeh@ucsf.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/22223737" target="_blank"〉PubMed〈/a〉
Keywords:
Animals
;
*Biological Evolution
;
Centrioles/metabolism/ultrastructure
;
*Centrosome/metabolism/ultrastructure
;
Cilia/metabolism/ultrastructure
;
Genome, Helminth
;
Helminth Proteins/*genetics/metabolism
;
Movement
;
Phenotype
;
Planarians/*genetics/physiology/*ultrastructure
;
RNA Interference
;
Regeneration
;
Selection, Genetic
Print ISSN:
0036-8075
Electronic ISSN:
1095-9203
Topics:
Biology
,
Chemistry and Pharmacology
,
Computer Science
,
Medicine
,
Natural Sciences in General
,
Physics
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