scholarly journals Cell Polarity Regulates Biased Myosin Activity and Dynamics during Asymmetric Cell Division via Drosophila Rho Kinase and Protein Kinase N

2017 ◽  
Vol 42 (2) ◽  
pp. 143-155.e5 ◽  
Author(s):  
Anna Tsankova ◽  
Tri Thanh Pham ◽  
David Salvador Garcia ◽  
Fabian Otte ◽  
Clemens Cabernard
Keyword(s):  
Cell Division ◽  
Protein Kinase ◽  
Cell Polarity ◽  
Asymmetric Cell Division ◽  
Rho Kinase ◽  
Protein Kinase N

scholarly journals Cytokine receptor-Eb1 interaction couples cell polarity and fate during asymmetric cell division

eLife ◽  
2018 ◽  
Vol 7 ◽  
Author(s):  
Cuie Chen ◽  
Ryan Cummings ◽  
Aghapi Mordovanakis ◽  
Alan J Hunt ◽  
Michael Mayer ◽  
...  
Keyword(s):  
Stem Cells ◽  
Cell Division ◽  
Cell Fate ◽  
Cell Polarity ◽  
Adult Stem Cells ◽  
Asymmetric Cell Division ◽  
Cytokine Receptor ◽  
Spindle Orientation ◽  
Germline Stem Cells ◽  
Self Renewal

Asymmetric stem cell division is a critical mechanism for balancing self-renewal and differentiation. Adult stem cells often orient their mitotic spindle to place one daughter inside the niche and the other outside of it to achieve asymmetric division. It remains unknown whether and how the niche may direct division orientation. Here we discover a novel and evolutionary conserved mechanism that couples cell polarity to cell fate. We show that the cytokine receptor homolog Dome, acting downstream of the niche-derived ligand Upd, directly binds to the microtubule-binding protein Eb1 to regulate spindle orientation in Drosophila male germline stem cells (GSCs). Dome’s role in spindle orientation is entirely separable from its known function in self-renewal mediated by the JAK-STAT pathway. We propose that integration of two functions (cell polarity and fate) in a single receptor is a key mechanism to ensure an asymmetric outcome following cell division.

Protein Complex Assemblies in Epithelial Cell Polarity and Asymmetric Cell Division

2018 ◽  
Vol 430 (19) ◽  
pp. 3504-3520 ◽  
Author(s):  
Wenyu Wen ◽  
Mingjie Zhang
Keyword(s):  
Cell Division ◽  
Epithelial Cell ◽  
Cell Polarity ◽  
Protein Complex ◽  
Asymmetric Cell Division ◽  
Epithelial Cell Polarity

scholarly journals PLK-1 Regulation of Asymmetric Cell Division in the Early C. elegans Embryo

2021 ◽  
Vol 8 ◽  
Author(s):  
Amelia J. Kim ◽  
Erik E. Griffin
Keyword(s):  
Cell Division ◽  
Cell Fate ◽  
Cell Polarity ◽  
Planar Cell Polarity ◽  
Asymmetric Cell Division ◽  
Critical Role ◽  
Cell Cortex ◽  
C Elegans ◽  
Mitotic Kinase ◽  
Centrosome Separation

PLK1 is a conserved mitotic kinase that is essential for the entry into and progression through mitosis. In addition to its canonical mitotic functions, recent studies have characterized a critical role for PLK-1 in regulating the polarization and asymmetric division of the one-cell C. elegans embryo. Prior to cell division, PLK-1 regulates both the polarization of the PAR proteins at the cell cortex and the segregation of cell fate determinants in the cytoplasm. Following cell division, PLK-1 is preferentially inherited to one daughter cell where it acts to regulate the timing of centrosome separation and cell division. PLK1 also regulates cell polarity in asymmetrically dividing Drosophila neuroblasts and during mammalian planar cell polarity, suggesting it may act broadly to connect cell polarity and cell cycle mechanisms.

scholarly journals Author response: Cytokine receptor-Eb1 interaction couples cell polarity and fate during asymmetric cell division

2018 ◽  
Author(s):  
Cuie Chen ◽  
Ryan Cummings ◽  
Aghapi Mordovanakis ◽  
Alan J Hunt ◽  
Michael Mayer ◽  
...  
Keyword(s):  
Cell Division ◽  
Cell Polarity ◽  
Asymmetric Cell Division ◽  
Cytokine Receptor ◽  
Author Response

scholarly journals The polarity protein Baz forms a platform for the centrosome orientation during asymmetric stem cell division in the Drosophila male germline

eLife ◽  
2015 ◽  
Vol 4 ◽  
Author(s):  
Mayu Inaba ◽  
Zsolt G Venkei ◽  
Yukiko M Yamashita
Keyword(s):  
Stem Cells ◽  
Cell Division ◽  
Cell Polarity ◽  
Asymmetric Cell Division ◽  
Underlying Mechanism ◽  
Germline Stem Cells ◽  
Cell Fates ◽  
Male Germline ◽  
Distinct Cell ◽  
Tightly Coupled

Many stem cells divide asymmetrically in order to balance self-renewal with differentiation. The essence of asymmetric cell division (ACD) is the polarization of cells and subsequent division, leading to unequal compartmentalization of cellular/extracellular components that confer distinct cell fates to daughter cells. Because precocious cell division before establishing cell polarity would lead to failure in ACD, these two processes must be tightly coupled; however, the underlying mechanism is poorly understood. In Drosophila male germline stem cells, ACD is prepared by stereotypical centrosome positioning. The centrosome orientation checkpoint (COC) further serves to ensure ACD by preventing mitosis upon centrosome misorientation. In this study, we show that Bazooka (Baz) provides a platform for the correct centrosome orientation and that Baz-centrosome association is the key event that is monitored by the COC. Our work provides a foundation for understanding how the correct cell polarity may be recognized by the cell to ensure productive ACD.

Cell polarity and the mechanism of asymmetric cell division

BioEssays ◽  
1994 ◽  
Vol 16 (12) ◽  
pp. 925-931 ◽  
Author(s):  
Jeffrey C. Way ◽  
Lili Wang ◽  
Jin-Quan Run ◽  
Ming-Shiu Hung
Keyword(s):  
Cell Division ◽  
Cell Polarity ◽  
Asymmetric Cell Division
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