Mitochondrial ribosomal protein L41 mediates serum starvation-induced cell-cycle arrest through an increase of p21WAF1/CIP1

Mi Jin Kim, Young A. Yoo, Hyung Jung Kim, Seongman Kang, Yong Geon Kim, Jun Suk Kim, Young Do Yoo

    Research output: Contribution to journalArticlepeer-review

    35 Citations (Scopus)

    Abstract

    Ribosomal proteins not only act as components of the translation apparatus but also regulate cell proliferation and apoptosis. A previous study reported that MRPL41 plays an important role in p53-dependent apoptosis. It also showed that MRPL41 arrests the cell cycle by stabilizing p27Kip1 in the absence of p53. This study found that MRPL41 mediates the p21 WAF1/CIP1-mediated G1 arrest in response to serum starvation. The cells were released from serum starvation-induced G1 arrest via the siRNA-mediated blocking of MRPL41 expression. Overall, these results suggest that MRPL41 arrests the cell cycle by increasing the p21WAF1/CIP1 and p27Kip1 levels under the growth inhibitory conditions.

    Original languageEnglish
    Pages (from-to)1179-1184
    Number of pages6
    JournalBiochemical and biophysical research communications
    Volume338
    Issue number2
    DOIs
    Publication statusPublished - 2005 Dec 16

    Bibliographical note

    Funding Information:
    This research was supported by a grant from the Korean Ministry of Health and Welfare (HMP-02-PJ1-CH03-0001), by a grant from the National Nuclear R&D Program of MOST/KOSEF (M20513000082-05B0900-08200), and by a grant from the Molecular and Cellular BioDiscovery Research Program (M1-0311-00-0035) of MOST/KOSEF.

    Keywords

    • Cell cycle
    • MRPL41
    • Serum starvation
    • p21
    • p27
    • p53

    ASJC Scopus subject areas

    • Biophysics
    • Biochemistry
    • Molecular Biology
    • Cell Biology

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