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PLP inhibits the activity of interphase centrosomes to ensure their proper segregation in stem cells

Journal Article · · Journal of Cell Biology
 [1];  [2]
  1. National Institutes of Health (NIH), Bethesda, MD (United States). National Heart, Lung, and Blood Inst. Cell Biology and Physiology Center; DOE/OSTI
  2. National Institutes of Health (NIH), Bethesda, MD (United States). National Heart, Lung, and Blood Inst. Cell Biology and Physiology Center
Centrosomes determine the mitotic axis of asymmetrically dividing stem cells. Several studies have shown that the centrosomes of the Drosophila melanogaster central brain neural stem cells are themselves asymmetric, organizing varying levels of pericentriolar material and microtubules. This asymmetry produces one active and one inactive centrosome during interphase. We identify pericentrin-like protein (PLP) as a negative regulator of centrosome maturation and activity. We show that PLP is enriched on the inactive interphase centrosome, where it blocks recruitment of the master regulator of centrosome maturation, Polo kinase. Furthermore, we find that ectopic Centrobin expression influenced PLP levels on the basal centrosome, suggesting it may normally function to regulate PLP. Finally, we conclude that, although asymmetric centrosome maturation is not required for asymmetric cell division, it is required for proper centrosome segregation to the two daughter cells.
Research Organization:
National Institutes of Health (NIH), Bethesda, MD (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Biological and Environmental Research (BER). Biological Systems Science Division
OSTI ID:
1625167
Journal Information:
Journal of Cell Biology, Journal Name: Journal of Cell Biology Journal Issue: 7 Vol. 202; ISSN 0021-9525
Publisher:
Rockefeller University PressCopyright Statement
Country of Publication:
United States
Language:
English

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Cited By (26)

The Centriolar Protein Bld10/Cep135 Is Required to Establish Centrosome Asymmetry in Drosophila Neuroblasts journal July 2014
Loss of Centrobin Enables Daughter Centrioles to Form Sensory Cilia in Drosophila journal August 2015
Plk4 Regulates Centriole Asymmetry and Spindle Orientation in Neural Stem Cells journal July 2019
Drosophila neuroblasts as a new model for the study of stem cell self-renewal and tumour formation journal July 2014
Asterless is required for centriole length control and sperm development journal May 2016
Interphase centrosome organization by the PLP-Cnn scaffold is required for centrosome function journal July 2015
An Asp–CaM complex is required for centrosome–pole cohesion and centrosome inheritance in neural stem cells journal November 2015
Nasser Rusan: Scoping out centrosomes journal November 2017
Emerging mechanisms of asymmetric stem cell division journal September 2018
PLP helps the mother centrosome stay mum journal September 2013
Drosophila pericentrin requires interaction with calmodulin for its function at centrosomes and neuronal basal bodies but not at sperm basal bodies journal September 2014
When fate follows age: unequal centrosomes in asymmetric cell division journal September 2014
Dynamic centriolar relocalization of Polo kinase and Centrobin in early mitosis primes centrosome asymmetry in fly neural stem cells posted_content June 2019
Cep192 Controls the Balance of Centrosome and Non-Centrosomal Microtubules during Interphase journal June 2014
Divide Precisely and Proliferate Safely: Lessons From Budding Yeast journal January 2019
Centrosomal and Non-Centrosomal Microtubule-Organizing Centers (MTOCs) in Drosophila melanogaster journal August 2018
Spindle pole power in health and disease journal February 2019
Targeting of Fzr/Cdh1 for timely activation of the APC/C at the centrosome during mitotic exit journal August 2016
Centrosomin represses dendrite branching by orienting microtubule nucleation journal August 2015
Rootletin organizes the ciliary rootlet to achieve neuron sensory function in Drosophila journal October 2015
Centrobin is essential for C-tubule assembly and flagellum development in Drosophila melanogaster spermatogenesis journal April 2018
The dual role of the centrosome in organizing the microtubule network in interphase journal September 2018
The Mitotic Exit Network Regulates Spindle Pole Body Selection During Sporulation of Saccharomyces cerevisiae journal April 2017
The Centrioles, Centrosomes, Basal Bodies, and Cilia of Drosophila melanogaster journal May 2017
Interphase centrosome organization by the PLP-Cnn scaffold is required for centrosome function text January 2015
Targeting of Fzr/Cdh1 for timely activation of the APC/C at the centrosome during mitotic exit text January 2016

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