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Rescue of murine silica-induced lung injury and fibrosis by human embryonic stem cells

P. Spitalieri, M.C. Quitadamo, A. Orlandi, L. Guerra, E. Giardina, V. Casavola, G. Novelli, C. Saltini, F. Sangiuolo
European Respiratory Journal 2011; DOI: 10.1183/09031936.00005511
P. Spitalieri
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M.C. Quitadamo
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A. Orlandi
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L. Guerra
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E. Giardina
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V. Casavola
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G. Novelli
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C. Saltini
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F. Sangiuolo
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Abstract

Type II pneumocytes (ATII Cells) are considered as putative alveolar stem cells. Since no treatment is available to repair damaged epithelium and preventing lung fibrosis, novel approaches to induce regeneration of injured alveolar epithelium are desired.

The objective of this study was to assess both the capacity of human embryonic stem cells (HUES-3) to differentiate in vitro into ATII Cells and the ability of committed HUES-3 cells (HUES-3-ATII Cells) to recover in vivo a pulmonary fibrosis model obtained by silica-induced damage.

In vitro differentiated HUES-3-ATII Cells displayed alveolar phenotype characterized by multilamellar body and tight junction formation, by the expression of specific markers such as SP-B, SP-C and ZO-1 and the activity of CFTR-mediated chloride ion transport.

After transplantation of HUES-3-ATII Cells into silica-damaged mice, histological and biomolecular analyses revealed a significant reduction of inflammation and fibrosis markers along with lung function improvement, weight recovery and increased survival. The persistence of human SP-C, human nuclear antigen and human DNA in the engrafted lungs indicates that differentiated cells remained engrafted up to ten weeks.

In conclusion, cell therapy using HUES-3 cells may be considered a promising approach to lung injury repair.

  • Cell therapy
  • human embryonic stem cells
  • lung fibrosis
  • silica damage
  • ERS
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Vol 51 Issue 4 Table of Contents
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Rescue of murine silica-induced lung injury and fibrosis by human embryonic stem cells
P. Spitalieri, M.C. Quitadamo, A. Orlandi, L. Guerra, E. Giardina, V. Casavola, G. Novelli, C. Saltini, F. Sangiuolo
European Respiratory Journal Jan 2011, erj00055-2011; DOI: 10.1183/09031936.00005511

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Rescue of murine silica-induced lung injury and fibrosis by human embryonic stem cells
P. Spitalieri, M.C. Quitadamo, A. Orlandi, L. Guerra, E. Giardina, V. Casavola, G. Novelli, C. Saltini, F. Sangiuolo
European Respiratory Journal Jan 2011, erj00055-2011; DOI: 10.1183/09031936.00005511
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