MicroRNA Processing Defect in Rapidly Progressing Idiopathic Pulmonary Fibrosis
Author Information
Author(s): Sameer R. Oak, Lynne Murray, Athula Herath, Matthew Sleeman, Ian Anderson, Amrita D. Joshi, Ana Lucia Coelho, Kevin R. Flaherty, Galen B. Toews, Darryl Knight, Fernando J. Martinez, Cory M. Hogaboam
Primary Institution: University of Michigan Medical School
Hypothesis
Differential miRNA expression might provide one explanation for rapidly versus slowly progressing forms of IPF.
Conclusion
The development and/or clinical progression of IPF might be the consequence of aberrant miRNA processing.
Supporting Evidence
- 11 miRNAs were significantly increased and 36 were significantly decreased in rapid biopsies compared with normal biopsies.
- 5 miRNAs were significantly increased in rapid compared with slow IPF lung biopsies.
- AGO1 and AGO2 expression were lower in rapidly progressive IPF biopsies compared to normal and slowly progressive biopsies.
Takeaway
This study found that certain tiny molecules in the lungs, called microRNAs, are different in patients with fast and slow forms of a lung disease called idiopathic pulmonary fibrosis.
Methodology
miRNA and mRNA were isolated from lung biopsies of IPF patients and analyzed using a quantitative PCR miRNA array.
Potential Biases
Potential bias in patient selection and classification of disease progression.
Limitations
The study is limited by the small sample size and the retrospective grouping of patients.
Participant Demographics
9 rapidly progressive IPF patients (7 male, 2 female, median age 66) and 6 slowly progressive IPF patients (2 male, 4 female, median age 61).
Statistical Information
P-Value
0.0003 to 0.00003 for various miRNAs
Statistical Significance
p<0.05
Digital Object Identifier (DOI)
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