LIS1 determines cleavage plane positioning by regulating actomyosin-mediated cell membrane contractility

H.M. Moon, S. Hippenmeyer, L. Luo, A. Wynshaw-Boris, ELife 9 (2020).

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Journal Article | Published | English

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Author
Moon, Hyang Mi; Hippenmeyer, SimonIST Austria ; Luo, Liqun; Wynshaw-Boris, Anthony
Department
Abstract
Heterozygous loss of human PAFAH1B1 (coding for LIS1) results in the disruption of neurogenesis and neuronal migration via dysregulation of microtubule (MT) stability and dynein motor function/localization that alters mitotic spindle orientation, chromosomal segregation, and nuclear migration. Recently, human induced pluripotent stem cell (iPSC) models revealed an important role for LIS1 in controlling the length of terminal cell divisions of outer radial glial (oRG) progenitors, suggesting cellular functions of LIS1 in regulating neural progenitor cell (NPC) daughter cell separation. Here we examined the late mitotic stages NPCs in vivo and mouse embryonic fibroblasts (MEFs) in vitro from Pafah1b1-deficient mutants. Pafah1b1-deficient neocortical NPCs and MEFs similarly exhibited cleavage plane displacement with mislocalization of furrow-associated markers, associated with actomyosin dysfunction and cell membrane hyper-contractility. Thus, it suggests LIS1 acts as a key molecular link connecting MTs/dynein and actomyosin, ensuring that cell membrane contractility is tightly controlled to execute proper daughter cell separation.
Publishing Year
Date Published
2020-03-11
Journal Title
eLife
Volume
9
Article Number
51512
ISSN
IST-REx-ID

Cite this

Moon HM, Hippenmeyer S, Luo L, Wynshaw-Boris A. LIS1 determines cleavage plane positioning by regulating actomyosin-mediated cell membrane contractility. eLife. 2020;9. doi:10.7554/elife.51512
Moon, H. M., Hippenmeyer, S., Luo, L., & Wynshaw-Boris, A. (2020). LIS1 determines cleavage plane positioning by regulating actomyosin-mediated cell membrane contractility. ELife, 9. https://doi.org/10.7554/elife.51512
Moon, Hyang Mi, Simon Hippenmeyer, Liqun Luo, and Anthony Wynshaw-Boris. “LIS1 Determines Cleavage Plane Positioning by Regulating Actomyosin-Mediated Cell Membrane Contractility.” ELife 9 (2020). https://doi.org/10.7554/elife.51512.
H. M. Moon, S. Hippenmeyer, L. Luo, and A. Wynshaw-Boris, “LIS1 determines cleavage plane positioning by regulating actomyosin-mediated cell membrane contractility,” eLife, vol. 9, 2020.
Moon HM, Hippenmeyer S, Luo L, Wynshaw-Boris A. 2020. LIS1 determines cleavage plane positioning by regulating actomyosin-mediated cell membrane contractility. eLife. 9.
Moon, Hyang Mi, et al. “LIS1 Determines Cleavage Plane Positioning by Regulating Actomyosin-Mediated Cell Membrane Contractility.” ELife, vol. 9, 51512, eLife Sciences Publications, 2020, doi:10.7554/elife.51512.
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