Abstract:
:The introduction of microCT has made it possible to show that the terminal bronchioles are narrowed and destroyed before the onset of emphysematous destruction in COPD. This report extends those observations to the cellular and molecular level in the centrilobular phenotype of emphysematous destruction in lungs donated by persons with very severe COPD (n = 4) treated by lung transplantation with unused donor lungs (n = 4) serving as controls. These lung specimens provided companion samples to those previously examined by microCT (n = 61) that we examined using quantitative histology (n = 61) and gene expression profiling (n = 48). The histological analysis showed that remodeling and destruction of the bronchiolar and alveolar tissue is associated with macrophage, CD4, CD8, and B cell infiltration with increased formation of tertiary lymphoid organs. Moreover, gene set enrichment analysis showed that genes known to be expressed by natural killer (NK), lymphoid tissue inducer (LTi), and innate lymphoid cell 1 (ILC1) cells, but not ILC2 or ILC3 cells, were enriched in the expression profiles associated with CD4, CD8, and B cell infiltration. Based on these findings, we postulate that the centrilobular phenotype of emphysematous destruction COPD is driven by a Th1 response activated by infiltrating ILC1, NK, and LTi cells.
journal_name
Sci Repjournal_title
Scientific reportsauthors
Suzuki M,Sze MA,Campbell JD,Brothers JF 2nd,Lenburg ME,McDonough JE,Elliott WM,Cooper JD,Spira A,Hogg JCdoi
10.1038/s41598-017-10126-2subject
Has Abstractpub_date
2017-08-25 00:00:00pages
9562issue
1issn
2045-2322pii
10.1038/s41598-017-10126-2journal_volume
7pub_type
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