Mouse B-type lamins are required for proper organogenesis but not by embryonic stem cells

Youngjo Kim, Alexei A. Sharov, Katie McDole, Melody Cheng, Haiping Hao, Chen Ming Fan, Nicholas Gaiano, Minoru S.H. Ko, Yixian Zheng

Research output: Contribution to journalArticle

Abstract

B-type lamins, the major components of the nuclear lamina, are believed to be essential for cell proliferation and survival. We found that mouse embryonic stem cells (ESCs) do not need any lamins for self-renewal and pluripotency. Although genome-wide lamin-B binding profiles correlate with reduced gene expression, such binding is not directly required for gene silencing in ESCs or trophectoderm cells. However, B-type lamins are required for proper organogenesis. Defects in spindle orientation in neural progenitor cells and migration of neurons probably cause brain disorganizations found in lamin-B null mice. Thus, our studies not only disprove several prevailing views of lamin-Bs but also establish a foundation for redefining the function of the nuclear lamina in the context of tissue building and homeostasis.

Original languageEnglish (US)
Pages (from-to)1706-1710
Number of pages5
JournalScience
Volume334
Issue number6063
DOIs
StatePublished - Dec 23 2011

ASJC Scopus subject areas

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    Kim, Y., Sharov, A. A., McDole, K., Cheng, M., Hao, H., Fan, C. M., Gaiano, N., Ko, M. S. H., & Zheng, Y. (2011). Mouse B-type lamins are required for proper organogenesis but not by embryonic stem cells. Science, 334(6063), 1706-1710. https://doi.org/10.1126/science.1211222