Skip to main page content
U.S. flag

An official website of the United States government

Dot gov

The .gov means it’s official.
Federal government websites often end in .gov or .mil. Before sharing sensitive information, make sure you’re on a federal government site.

Https

The site is secure.
The https:// ensures that you are connecting to the official website and that any information you provide is encrypted and transmitted securely.

Access keys NCBI Homepage MyNCBI Homepage Main Content Main Navigation
Comment
. 2012 Mar 7;31(5):1058-9.
doi: 10.1038/emboj.2012.39. Epub 2012 Feb 17.

B-type lamins and their elusive roles in metazoan cell proliferation and senescence

Affiliations
Comment

B-type lamins and their elusive roles in metazoan cell proliferation and senescence

Christopher J Hutchison. EMBO J. .

Abstract

EMBO J 31 5, 1080–1094 (2012); published online January 13 2012

Have you seen the recent papers that question the traditional role of B-type lamins in DNA replication and transcription, but highlight an entirely novel yet fundamental role for lamin B1 (LB1) in cell proliferation and cellular senescence?

PubMed Disclaimer

Conflict of interest statement

The author declares that he has no conflict of interest.

Figures

Figure 1
Figure 1
The effects of different cellular stresses that lead to senescence on lamin A to lamin B1 ratios. Healthy early passage cells have a balanced LMA to LB1 ratio. In response to senescence-inducing events, LB1 expression is altered and/or LMA is oxidized, dramatically changing the ratio of LB1 to functional LMA, thus leading to altered lamina organization and entry into a state of senescence.

Comment on

References

    1. Barascu A, Le Chalony C, Pennarun G, Genet D, Imam N, Lopez B, Bertrand P (2012) Oxidative stress induces an ATM-independent senescence pathway through p38 MAPK-mediated lamin B1 accumulation. EMBO J 31: 1080–1094 - PMC - PubMed
    1. Dorner D, Vlcek S, Foeger N, Gajewski A, Makolm C, Gotzmann J, Hutchison CJ, Foisner R (2006) Lamina-associated polypeptide 2alpha regulates cell cycle progression and differentiation via the retinoblastoma-E2F pathway. J Cell Biol 173: 83–93 - PMC - PubMed
    1. González JM, Navarro-Puche A, Casar B, Crespo P, Andrés V (2008) Fast regulation of AP-1 activity through interaction of lamin A/C, ERK1/2, and c-Fos at the nuclear envelope. J Cell Biol 183: 653–666 - PMC - PubMed
    1. Harborth J, Elbashir SM, Bechert K, Tuschl T, Weber K (2001) Identification of essential genes in cultured mammalian cells using small interfering RNAs. J Cell Sci 114: 4557–4565 - PubMed
    1. Hutchison CJ (2002) Lamins: building blocks or regulators of gene expression? Nat Rev Mol Cell Biol 3: 848–858 - PubMed

Substances