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Isolation and characterization of lung resident mesenchymal stem cells capable of differentiating into alveolar epithelial type II cells.

Authors
  • Gong, Xuemin
  • Sun, Zhaorui
  • Cui, Di
  • Xu, Xiaomeng
  • Zhu, Huiming
  • Wang, Lihui
  • Qian, Weiping
  • Han, Xiaodong
Type
Published Article
Journal
Cell Biology International
Publisher
Wiley (John Wiley & Sons)
Publication Date
Apr 01, 2014
Volume
38
Issue
4
Pages
405–411
Identifiers
DOI: 10.1002/cbin.10240
PMID: 24403246
Source
Medline
Keywords
License
Unknown

Abstract

Controversies and risks continue to be reported about exogenous mesenchymal stem cell-based therapies. In contrast with employing exogenous stem cells, making use of lung resident mesenchymal stem cells (LR-MSCs) could be advantageous. Our study sought to isolate the LR-MSCs and explore their potential to differentiate into alveolar epithelial type II cells (ATII cells). Total lung cells were first precultured, from which the Sca-1(+) CD45(-) CD31(-) population was purified using fluorescence activated cell sorting (FACS). By these methods, it would seem that the Sca-1(+) CD45(-) CD31(-) cells were LR-MSCs. Similar to bone marrow derived mesenchymal stem cells (BM-MSCs), these cells express Sca-1, CD29, CD90, CD44 and CD106, but not CD31 or CD45. They share the same gene expression file with the BM-MSCs and have a similar DNA content during long-term culturing. Furthermore, they could be serially passaged with all these properties being sustained. Above all, LR-MSCs could differentiate into ATII cells when co-cultured with ATII cells in a trans-well system. These findings demonstrated that the Sca-1(+) CD45(-) CD31(-) cells appear to be LR-MSCs that can differentiate into ATII cells. This approach may hold promise for their use in the treatment of lung disease.

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