Cited by 225Nuclear Structure and FunctionNeurogenesis and neuroplasticity mechanismsSkin and Cellular Biology Research

Deficiencies in lamin B1 and lamin B2 cause neurodevelopmental defects and distinct nuclear shape abnormalities in neurons

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Coffinier, Catherine, Jung, Hea-Jin, Nobumori, Chika, Chang, Sandy, Tu, Yiping, Barnes, Richard H., Yoshinaga, Yuko, de Jong, Pieter J. +4 more·2011·Molecular Biology of the Cell

Abstract

Neuronal migration is essential for the development of the mammalian brain. Here, we document severe defects in neuronal migration and reduced numbers of neurons in lamin B1–deficient mice. Lamin B1 deficiency resulted in striking abnormalities in the nuclear shape of cortical neurons; many neurons contained a solitary nuclear bleb and exhibited an asymmetric distribution of lamin B2. In contrast, lamin B2 deficiency led to increased numbers of neurons with elongated nuclei. We used conditional alleles for Lmnb1 and Lmnb2 to create forebrain-specific knockout mice. The forebrain-specific Lmnb1- and Lmnb2-knockout models had a small forebrain with disorganized layering of neurons and nuclear shape abnormalities, similar to abnormalities identified in the conventional knockout mice. A more severe phenotype, complete atrophy of the cortex, was observed in forebrain-specific Lmnb1/Lmnb2 double-knockout mice. This study demonstrates that both lamin B1 and lamin B2 are essential for brain development, with lamin B1 being required for the integrity of the nuclear lamina, and lamin B2 being important for resistance to nuclear elongation in neurons.

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Authors
Coffinier, C., Jung, H.-J., Nobumori, C., Chang, S., Tu, Y., Barnes, R. H., Yoshinaga, Y., de Jong, P. J., Vergnes, L., Reue, K., Fong, L. G., & Young, S. G.
Affiliations
  • University of California, Los Angeles (US)
  • Children's Hospital Oakland Research Institute, Oakland, CA 94609
Corresponding author
Coffinier, Catherine
Venue
Molecular Biology of the Cell
Published
2011-12
Volume
22
Issue
23
Pages
4683-4693
ISSN
  • 1059-1524 (ISSN-L)
  • 1939-4586
OpenAlex
W1978257498
Cited by
225
References
41
Citations by year
2026: 11 · 2025: 16 · 2024: 9 · 2023: 13 · 2022: 17 · 2021: 23 · 2020: 14 · 2019: 11 · 2018: 12 · 2017: 8 · 2016: 20 · 2015: 12 · 2014: 21 · 2013: 19 · 2012: 14
FWCI
7.54
Type
journal article
Language
en
Open access
Licence
cc-by-nc-sa
Locations
  • Molecular Biology of the Cell (publishedVersion)
  • Europe PMC (PubMed Central) (publishedVersion, cc-by-nc-sa)
  • PubMed Central (publishedVersion, cc-by-nc-sa)
  • PubMed (publishedVersion)
  • eScholarship (California Digital Library) (submittedVersion)
Funders
  • National Science Foundation (0722519)
  • Ellison Medical Foundation
  • March of Dimes Foundation
  • American Heart Association
  • National Institutes of Health
  • University of California, Los Angeles
  • U.S. Public Health Service (CJX1-44385-WS-29646)
  • National Institute on Aging (R01AG035626)
  • National Heart, Lung, and Blood Institute (HL89781, R01HL076839, R01HL086683, HL-86683, HL76839, R01HL089781)
  • National Institute of General Medical Sciences (GM66152, R01GM066152)
  • National Institute of Arthritis and Musculoskeletal and Skin Diseases (R01AR050200, AR 050200)
  • National Center for Research Resources (CHE-0722519)
  • Division of Chemistry (CHE-0722519)
  • California NanoSystems Institute
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Nuclear Structure and Function
  • Life Sciences › Neuroscience › Developmental Neuroscience › Neurogenesis and neuroplasticity mechanisms
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Cell Biology › Skin and Cellular Biology Research
Keywords
lamin B1, lamin B2, neuronal migration, brain development, nuclear lamina, cortical neurons, cortical atrophy, forebrain development, conditional knockout mice
MeSH terms
Animals, Brain, Neurons, Prosencephalon, Mice, Knockout, Nuclear Lamina, Lamin Type B, Mice

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