A proteomic analysis during serial subculture and osteogenic differentiation of human mesenchymal stem cell

Authors

  • Hyun Jin Sun,

    1. Brain Korea 21 Project for Medical Science, Yonsei University College of Medicine, Seoul 120-752, Korea
    2. Department of Orthopaedic Surgery, Yonsei University College of Medicine, Seoul 120-752, Korea
    Search for more papers by this author
  • Young Yil Bahk,

    1. Protein Network Research Center, Yonsei University, Seoul 120-749, Korea
    Search for more papers by this author
  • Yon Rak Choi,

    1. Brain Korea 21 Project for Medical Science, Yonsei University College of Medicine, Seoul 120-752, Korea
    2. Department of Orthopaedic Surgery, Yonsei University College of Medicine, Seoul 120-752, Korea
    Search for more papers by this author
  • Jung Hye Shim,

    1. Protein Network Research Center, Yonsei University, Seoul 120-749, Korea
    Search for more papers by this author
  • Seung Hwan Han,

    1. Department of Orthopaedic Surgery, Yonsei University College of Medicine, Seoul 120-752, Korea
    Search for more papers by this author
  • Jin Woo Lee

    Corresponding author
    1. Brain Korea 21 Project for Medical Science, Yonsei University College of Medicine, Seoul 120-752, Korea
    2. Department of Orthopaedic Surgery, Yonsei University College of Medicine, Seoul 120-752, Korea
    • Brain Korea 21 Project for Medical Science, Yonsei University College of Medicine, Seoul 120-752, Korea. Telephone: +82-2-2298-2190, Fax: +82-2-363-1139
    Search for more papers by this author

  • The first two authors contributed equally to this work and share the first authorship.

Abstract

Although previous studies have reported the effects of extensive subculturing on proliferation rates and osteogenic potential of human mesenchymal stem cells (hMSCs), the results remain controversial. The aim of our study was to characterize the proliferation and osteogenic potential of hMSCs during serial subculture, and also to identify proteins that are differentially regulated in hMSCs during serial subculture and osteogenic differentiation using proteome analysis. Here we show that the proliferation and osteogenic capacity of hMSCs decrease during serial subculturing. Several proteins were shown to be differentially regulated during serial subculture; among these the expression of T-complex protein 1 α subunit (TCP-1α), a protein known to be associated with cell proliferation, cell cycle, morphological changes, and apoptosis, gradually decreased during serial subculture. Among proteins that were differentially regulated during osteogenic differentiation, chloride intracellular channel 1 (CLIC1) was downregulated only during the early passages eukaryotic translation elongation factor, and acidic ribosomal phosphoprotein P0 was downregulated during the middle passages, while annexin V, LIM, and SH3 domain protein 1 (LASP-1), and 14-3-3 protein gamma (YWHAG) were upregulated during the later passage. These studies suggest that differentially regulated passage-specific proteins may play a role in the decrease of osteogenic differentiation potential under serial subculturing. © 2006 Orthopaedic Research Society. Published by Wiley Periodicals, Inc. J Orthop Res 24:2059–2071, 2006

Ancillary