Isolation of Mesenchymal Stem Cells from the Mononuclear Cells Remaining in the Bone Marrow Processing Kit

골수처리키트 내 잔존하는 골수세포로부터 중간엽줄기세포의 분리

  • Kim, Sin-Young (Department of Laboratory Medicine, Yonsei University College of Medicine) ;
  • Heo, June-Seok (Yonsei Cell Therapy Center, Yonsei University College of Medicine) ;
  • Kim, Han-Soo (Department of Laboratory Medicine, Yonsei University College of Medicine) ;
  • Kim, Hyun-Ok (Department of Laboratory Medicine, Yonsei University College of Medicine)
  • 김신영 (연세대학교 의과대학 진단검사의학교실) ;
  • 허준석 (연세대학교 의과대학 세포치료센터) ;
  • 김한수 (연세대학교 의과대학 진단검사의학교실) ;
  • 김현옥 (연세대학교 의과대학 진단검사의학교실)
  • Received : 2010.11.18
  • Accepted : 2010.12.12
  • Published : 2010.12.31


Background: Mesenchymal stem cells (MSCs) that are capable of extensive self renewal and differentiation have attracted great attention as a promising tool for regenerative medicine and tissue engineering. Although MSCs can be isolated from various tissues, bone marrow currently represents one of the most reliable sources for providing a sufficient yield of cells in a good quality. Herein, used bone marrow processing kits were evaluated as a valuable source of MSCs. Methods: Bone marrow mononuclear cells (MNCs) were recovered from used bone marrow processing kits after routine bone marrow processing by using the COBE 2991 Cell Processor (CaridianBCT Inc.). The MSCs were isolated from the recovered MNCs using a standard plastic adherence method. Immunophenotyping and differentiation assays were performed to clarify the characteristics of the isolated MSCs. Results: An average of $1{\times}10^8$ bone marrow MNCs was collected, and the MSCs were successfully isolated from the recovered bone marrow MNCs in all case. The isolated MSCs were positive for essential MSC surface molecules (CD29, CD44, CD73, CD90, CD105) and they were negative for most hematopoietic and endothelial cell markers (CD34, CD45, CD31, CD14). The isolated MSCs were capable of differentiation along the osteogenic, adipogenic and chondrogenic pathways. Conclusion: MSCs isolated from used bone marrow processing kits are an alternative and ethical source of bone marrow derived MSCs, and they can be used for research purposes.


Supported by : 대한수혈학회


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