The role of lamin B1 for the maintenance of nuclear structure and function
Open accessAbstract
Lamins constitute an integral structural component of the nuclear lamina. However, their impact on the structure and stability of chromosome territories, and on the regulation of gene expression is explored to a lesser extent. By 3D-FISH, Camps and colleagues showed that lamin B1 (LMNB1) is required for proper chromosome condensation in interphase nuclei, and deficiency of LMNB1 triggers the relocation of the epigenetic mark of facultative heterochromatin, H3K27me3, toward the interior of the nucleus. Additionally, LMNB1 repression slowed cellular growth due to S-phase delays and increased genomic instability. Finally, silencing of LMNB1 resulted in enlarged nuclear speckles and in extensive changes in alternative splicing of multiple genes. Altogether, the data suggest a central role of LMNB1 for the condensation of chromosome territories, for the distribution of heterochromatin, and for the regulation of gene expression and splicing.
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Lamin B1 normally functions to tether heterochromatin to the inner nuclear membrane, preventing its transcription.
“Lamin B1 normally functions to tether heterochromatin to the inner nuclear membrane, preventing its transcription [15].”
From DNA repair deficiency and senescence in concussed professional athletes involved in contact sports (2019) · cites this paper as [15]
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DNA repair deficiency and senescence in concussed professional athletes involved in contact sports
Schwab, N., Grenier, K., & Hazrati, L.-N. (2019) · Acta Neuropathologica Communications · doi:10.1186/s40478-019-0822-3 · Cited by 47 · see citing works
- Authors
- Camps, J., Erdos, M. R., & Ried, T.
- Affiliations
- Hospital Clínic de Barcelona (ES)
- National Institutes of Health (US)
- Corresponding author
- Camps, Jordi
- Ried, Thomas
- Venue
- Nucleus
- Publisher
- Informa UK Limited
- Published
- 2015-01-02
- Volume
- 6
- Issue
- 1
- Pages
- 8-14
- ISSN
- 1949-1034 (ISSN-L)
- 1949-1042
- PMC
- PMC4615282
- OpenAlex
- W1591236566
- Cited by
- 97
- References
- 37
- Citations by year
- 2026: 9 · 2025: 10 · 2024: 15 · 2023: 11 · 2022: 12 · 2021: 5 · 2020: 9 · 2019: 10 · 2018: 8 · 2017: 5 · 2016: 3
- FWCI
- 0.52
- Type
- journal article
- Language
- en
- Open access
- gold
- doi.org
- Locations
- Nucleus (publishedVersion)
- PubMed Central (publishedVersion)
- PubMed (publishedVersion)
- Funders
- National Human Genome Research Institute
- Topics
- Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Nuclear Structure and Function
- Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Genomics and Chromatin Dynamics
- Life Sciences › Biochemistry, Genetics and Molecular Biology › Cell Biology › Skin and Cellular Biology Research
- Keywords
- lamin B1, nuclear lamina, chromosome territories, chromosome condensation, interphase nuclei, facultative heterochromatin, H3K27me3, nuclear speckles, alternative splicing, gene expression regulation, genomic instability, S phase delay
- MeSH terms
- Animals, Chromosomes, DNA Replication, Gene Expression Regulation, Humans, Active Transport, Cell Nucleus, Nuclear Lamina, Lamin Type B
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