Targeted induction of lung endothelial cell apoptosis causes emphysema-like changes in the mouse

Ricardo J. Giordano, Johanna Lahdenranta, Lijie Zhen, Ugonma Chukwueke, Irina Petrache, Robert R. Langley, Isaiah J. Fidler, Renata Pasqualini, Rubin M. Tuder, Wadih Arap

Research output: Contribution to journalArticle

85 Citations (Scopus)

Abstract

Pulmonary gas exchange relies on a rich capillary network, which, together with alveolar epithelial type I and II cells, form alveolar septa, the functional units in the lung. Alveolar capillary endothelial cells are critical in maintaining alveolar structure, because disruption of endothelial cell integrity underlies several lung diseases. Here we show that targeted ablation of lung capillary endothelial cells recapitulates the cellular events involved in cigarette smoke-induced emphysema, one of the most prevalent nonneoplastic lung diseases. Based on phage library screening on an immortalized lung endothelial cell line, we identified a lung endothelial cell-binding peptide, which preferentially homes to lung blood vessels. This peptide fused to a proapoptotic motif specifically induced programmed cell death of lung endothelial cells in vitro as well as targeted apoptosis of the lung microcirculation in vivo. As early as 4 days following peptide administration, mice developed air space enlargement associated with enhanced oxidative stress, influx of macrophages, and up-regulation of ceramide. Given that these are all critical elements of the corresponding human emphysema caused by cigarette smoke, these data provide evidence for a central role for the alveolar endothelial cells in the maintenance of lung structure and of endothelial cell apoptosis in the pathogenesis of emphysema-like changes. Thus, our data enable the generation of a convenient mouse model of human emphysema. Finally, combinatorial screenings on immortalized cells followed by in vivo targeting establishes an experimental framework for discovery and validation of additional ligand-directed pharmacodelivery systems.

Original languageEnglish
Pages (from-to)29447-29460
Number of pages14
JournalJournal of Biological Chemistry
Volume283
Issue number43
DOIs
StatePublished - Oct 24 2008

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Endothelial cells
Emphysema
Endothelial Cells
Apoptosis
Lung
Alveolar Epithelial Cells
Pulmonary diseases
Smoke
Tobacco Products
Peptides
Lung Diseases
Screening
Pulmonary Gas Exchange
Microcirculation
Bacteriophages
Oxidative stress
Macrophages
Ceramides
Blood vessels
Cell death

ASJC Scopus subject areas

  • Biochemistry
  • Cell Biology
  • Molecular Biology

Cite this

Giordano, R. J., Lahdenranta, J., Zhen, L., Chukwueke, U., Petrache, I., Langley, R. R., ... Arap, W. (2008). Targeted induction of lung endothelial cell apoptosis causes emphysema-like changes in the mouse. Journal of Biological Chemistry, 283(43), 29447-29460. https://doi.org/10.1074/jbc.M804595200

Targeted induction of lung endothelial cell apoptosis causes emphysema-like changes in the mouse. / Giordano, Ricardo J.; Lahdenranta, Johanna; Zhen, Lijie; Chukwueke, Ugonma; Petrache, Irina; Langley, Robert R.; Fidler, Isaiah J.; Pasqualini, Renata; Tuder, Rubin M.; Arap, Wadih.

In: Journal of Biological Chemistry, Vol. 283, No. 43, 24.10.2008, p. 29447-29460.

Research output: Contribution to journalArticle

Giordano, RJ, Lahdenranta, J, Zhen, L, Chukwueke, U, Petrache, I, Langley, RR, Fidler, IJ, Pasqualini, R, Tuder, RM & Arap, W 2008, 'Targeted induction of lung endothelial cell apoptosis causes emphysema-like changes in the mouse', Journal of Biological Chemistry, vol. 283, no. 43, pp. 29447-29460. https://doi.org/10.1074/jbc.M804595200
Giordano, Ricardo J. ; Lahdenranta, Johanna ; Zhen, Lijie ; Chukwueke, Ugonma ; Petrache, Irina ; Langley, Robert R. ; Fidler, Isaiah J. ; Pasqualini, Renata ; Tuder, Rubin M. ; Arap, Wadih. / Targeted induction of lung endothelial cell apoptosis causes emphysema-like changes in the mouse. In: Journal of Biological Chemistry. 2008 ; Vol. 283, No. 43. pp. 29447-29460.
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