Bone marrow-derived progenitor cells in end-stage lung disease patients

Sarah E. Gilpin, Kalvin Lung, Geoffrey T. de Couto, Marcelo Cypel, Masaaki Sato, Lianne G. Singer, Shaf Keshavjee, Thomas K. Waddell*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

8 Scopus citations

Abstract

Background: Chronic lung diseases are marked by progressive inflammation, tissue damage and remodelling. Bone marrow-derived progenitor cells may contribute to these processes. The objectives of this study were to (1) to quantify CD45+Collagen-1+ fibrocytes and a novel epithelial-like population of bone marrow-derived cells, which express Clara Cell Secretory Protein, in patients at the time of lung transplant and (2) to evaluate mediators that may act to recruit these cells during injury.Methods: Using an observational design, progenitor cells were quantified by flow cytometry from both bone marrow (BM) and peripheral blood (PB). Migration was tested using in vitro transwell assays. Multiplex bead-based assays were used to quantify plasma cytokines.Results: An increase in CD45+Collagen-1+ fibrocytes was found in pulmonary fibrosis and bronchiolitis obliterans patients. Cystic fibrosis patients had an increase in CCSP+ cells in both the BM and PB. The proportion of CCSP+ cells in the BM and PB was correlated. CCSP+ cells express the chemokine receptors CCR2, CCR4, CXCR3, and CXCR4, and significantly migrated in vitro toward Stromal Derived Factor-1 (SDF-1) and Stem Cell Growth Factor-β (SCGF-β). Plasma cytokine levels differed between disease groups, with a significant correlation between SCGF-β and CCSP+ cells and between Monocyte Chemotactic Protein-1 and fibrocytes.Conclusions: Different bone marrow-derived cells are found in various lung diseases. Increased fibrocytes were associated with fibrotic lung diseases. An increase in the novel CCSP+ epithelial-like progenitors in cystic fibrosis patients was found. These differences may be mediated by alterations in plasma cytokines responsible for cell recruitment.

Original languageEnglish (US)
Article number48
JournalBMC Pulmonary Medicine
Volume13
Issue number1
DOIs
StatePublished - Aug 3 2013
Externally publishedYes

Keywords

  • Clara cell
  • Fibrocytes
  • Lung progenitor
  • Migration

ASJC Scopus subject areas

  • Pulmonary and Respiratory Medicine

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