Abstract:
BACKGROUND:Chronic obstructive pulmonary disease (COPD) is influenced by environmental and genetic factors. An important fraction of COPD cases harbor a major genetic determinant, inherited ZZ (Glu342Lys) α1-antitrypsin deficiency (AATD). A study was undertaken to investigate gene expression patterns in end-stage COPD lungs from patients with and without AATD. METHODS:Explanted lungs of end-stage ZZ AATD-related (treated and non-treated with AAT augmentation therapy) and "normal" MM COPD, and liver biopsies from patients suffering from liver cirrhosis with and without ZZ AATD were used for gene expression analysis by Affymetrix microarrays or RT-PCR. RESULTS:A total of 162 genes were found to be differentially expressed (p-value ≤ 0.05 and |FC| ≥ 2) between MM and ZZ COPD patients. Of those, 134 gene sets were up-regulated and 28 were down-regulated in ZZ relative to MM lung tissue. A subgroup of genes, zinc finger protein 165, snail homolog 1 (Drosophila) (SNAI1), and Krüppel-like transcription factors (KLFs) 4 (gut), 9 and 10, perfectly segregated ZZ and MM COPD patients. The higher expression of KLF 9 and KLF10 has been verified in the replication cohort with AATD-related end-stage lung emphysema and liver cirrhosis. Furthermore, higher expression of KLF9, SNAI1 and DEFA1 was found in ZZ COPD lungs without augmentation therapy relative to MM COPD or ZZ COPD with augmentation therapy. CONCLUSIONS:These results reveal the involvement of transcriptional regulators of the zinc-finger family in COPD pathogenesis and provide deeper insight into the pathophysiological mechanisms of COPD with and without AATD.
journal_name
Orphanet J Rare Disjournal_title
Orphanet journal of rare diseasesauthors
Koczulla AR,Jonigk D,Wolf T,Herr C,Noeske S,Klepetko W,Vogelmeier C,von Neuhoff N,Rische J,Wrenger S,Golpon H,Voswinckel R,Luisetti M,Ferrarotti I,Welte T,Janciauskiene Sdoi
10.1186/1750-1172-7-29subject
Has Abstractpub_date
2012-05-23 00:00:00pages
29issn
1750-1172pii
1750-1172-7-29journal_volume
7pub_type
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journal_title:Orphanet journal of rare diseases
pub_type: 杂志文章,meta分析
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pub_type: 杂志文章,多中心研究
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journal_title:Orphanet journal of rare diseases
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