Format

Send to:

Choose Destination
See comment in PubMed Commons below
Circ Res. 2008 Jul 3;103(1):89-97. doi: 10.1161/CIRCRESAHA.107.169334. Epub 2008 Jun 2.

Myocardial induction of nucleostemin in response to postnatal growth and pathological challenge.

Author information

  • 1San Diego State University Heart Institute and Department of Biology, San Diego State University, CA 92182, USA.

Abstract

Stem cell-specific proteins and regulatory pathways that determine self-renewal and differentiation have become of fundamental importance in understanding regenerative and reparative processes in the myocardium. One such regulatory protein, named nucleostemin, has been studied in the context of stem cells and several cancer cell lines, where expression is associated with proliferation and maintenance of a primitive cellular phenotype. We find nucleostemin is present in young myocardium and is also induced following cardiomyopathic injury. Nucleostemin expression in cardiomyocytes is induced by fibroblast growth factor-2 and accumulates in response to Pim-1 kinase activity. Cardiac stem cells also express nucleostemin that is diminished in response to commitment to a differentiated phenotype. Overexpression of nucleostemin in cultured cardiac stem cells increases proliferation while preserving telomere length, providing a mechanistic basis for potential actions of nucleostemin in promotion of cell survival and proliferation as seen in other cell types.

PMID:
18519946
[PubMed - indexed for MEDLINE]
PMCID:
PMC2762397
Free PMC Article

Publication Types, MeSH Terms, Substances, Grant Support

Publication Types

MeSH Terms

Substances

Grant Support

PubMed Commons home

PubMed Commons

0 comments
How to join PubMed Commons

    Supplemental Content

    Full text links

    Icon for HighWire Icon for PubMed Central
    Loading ...
    Write to the Help Desk