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Krause K, Kopp BT, Tazi MF, Caution K, Hamilton K, Badr A, Shrestha C, Tumin D, Hayes D, Robledo-Avila F, Hall-Stoodley L, Klamer BG, Zhang X, Partida-Sanchez S, Parinandi NL, Kirkby SE, Dakhlallah D, McCoy KS, Cormet-Boyaka E, Amer AO. The expression of Mirc1/Mir17-92 cluster in sputum samples correlates with pulmonary exacerbations in cystic fibrosis patients. J Cyst Fibros 2017; 17:454-461. [PMID: 29241629 DOI: 10.1016/j.jcf.2017.11.005] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2017] [Revised: 10/27/2017] [Accepted: 11/16/2017] [Indexed: 12/19/2022]
Abstract
INTRODUCTION Cystic fibrosis (CF) is a multi-organ disorder characterized by chronic sino-pulmonary infections and inflammation. Many patients with CF suffer from repeated pulmonary exacerbations that are predictors of worsened long-term morbidity and mortality. There are no reliable markers that associate with the onset or progression of an exacerbation or pulmonary deterioration. Previously, we found that the Mirc1/Mir17-92a cluster which is comprised of 6 microRNAs (Mirs) is highly expressed in CF mice and negatively regulates autophagy which in turn improves CF transmembrane conductance regulator (CFTR) function. Therefore, here we sought to examine the expression of individual Mirs within the Mirc1/Mir17-92 cluster in human cells and biological fluids and determine their role as biomarkers of pulmonary exacerbations and response to treatment. METHODS Mirc1/Mir17-92 cluster expression was measured in human CF and non-CF plasma, blood-derived neutrophils, and sputum samples. Values were correlated with pulmonary function, exacerbations and use of CFTR modulators. RESULTS Mirc1/Mir17-92 cluster expression was not significantly elevated in CF neutrophils nor plasma when compared to the non-CF cohort. Cluster expression in CF sputum was significantly higher than its expression in plasma. Elevated CF sputum Mirc1/Mir17-92 cluster expression positively correlated with pulmonary exacerbations and negatively correlated with lung function. Patients with CF undergoing treatment with the CFTR modulator Ivacaftor/Lumacaftor did not demonstrate significant change in the expression Mirc1/Mir17-92 cluster after six months of treatment. CONCLUSIONS Mirc1/Mir17-92 cluster expression is a promising biomarker of respiratory status in patients with CF including pulmonary exacerbation.
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Affiliation(s)
- Kathrin Krause
- Department of Microbial Infection and Immunity, Columbus, OH, USA; Dorothy M. Davis Heart and Lung Research Institute, Columbus, OH, USA; The Ohio State University College of Medicine, Columbus, OH, USA
| | - Benjamin T Kopp
- Department of Pediatrics, Columbus, OH, USA; Nationwide Children's Hospital, Columbus, OH, USA; The Ohio State University College of Medicine, Columbus, OH, USA
| | - Mia F Tazi
- Department of Microbial Infection and Immunity, Columbus, OH, USA; The Ohio State University College of Medicine, Columbus, OH, USA
| | - Kyle Caution
- Department of Microbial Infection and Immunity, Columbus, OH, USA; Dorothy M. Davis Heart and Lung Research Institute, Columbus, OH, USA; The Ohio State University College of Medicine, Columbus, OH, USA
| | - Kaitlin Hamilton
- Department of Microbial Infection and Immunity, Columbus, OH, USA; Dorothy M. Davis Heart and Lung Research Institute, Columbus, OH, USA; The Ohio State University College of Medicine, Columbus, OH, USA
| | - Asmaa Badr
- Department of Microbial Infection and Immunity, Columbus, OH, USA; Dorothy M. Davis Heart and Lung Research Institute, Columbus, OH, USA; The Ohio State University College of Medicine, Columbus, OH, USA
| | - Chandra Shrestha
- Department of Pediatrics, Columbus, OH, USA; Nationwide Children's Hospital, Columbus, OH, USA; The Ohio State University College of Medicine, Columbus, OH, USA
| | - Dmitry Tumin
- Department of Anesthesiology & Pain Medicine, Columbus, OH, USA; Nationwide Children's Hospital, Columbus, OH, USA; The Ohio State University College of Medicine, Columbus, OH, USA
| | - Don Hayes
- Department of Pediatrics, Columbus, OH, USA; Nationwide Children's Hospital, Columbus, OH, USA; The Ohio State University College of Medicine, Columbus, OH, USA
| | - Frank Robledo-Avila
- Department of Pediatrics, Columbus, OH, USA; Nationwide Children's Hospital, Columbus, OH, USA; The Ohio State University College of Medicine, Columbus, OH, USA
| | - Luanne Hall-Stoodley
- Department of Microbial Infection and Immunity, Columbus, OH, USA; The Ohio State University College of Medicine, Columbus, OH, USA
| | - Brett G Klamer
- Center for Biostatistics, Columbus, OH, USA; The Ohio State University College of Medicine, Columbus, OH, USA
| | - Xiaoli Zhang
- Center for Biostatistics, Columbus, OH, USA; The Ohio State University College of Medicine, Columbus, OH, USA
| | - Santiago Partida-Sanchez
- Department of Pediatrics, Columbus, OH, USA; Nationwide Children's Hospital, Columbus, OH, USA; The Ohio State University College of Medicine, Columbus, OH, USA
| | - Narasimham L Parinandi
- Dorothy M. Davis Heart and Lung Research Institute, Columbus, OH, USA; The Ohio State University College of Medicine, Columbus, OH, USA
| | - Stephen E Kirkby
- Department of Pediatrics, Columbus, OH, USA; Nationwide Children's Hospital, Columbus, OH, USA; The Ohio State University College of Medicine, Columbus, OH, USA
| | - Duaa Dakhlallah
- Microbiology, Immunology and Cell Biology Department, West Virginia University, Morgantown, WV, USA
| | - Karen S McCoy
- Department of Pediatrics, Columbus, OH, USA; Nationwide Children's Hospital, Columbus, OH, USA; The Ohio State University College of Medicine, Columbus, OH, USA
| | - Estelle Cormet-Boyaka
- Department of Veterinary Biosciences, Columbus, OH, USA; Dorothy M. Davis Heart and Lung Research Institute, Columbus, OH, USA
| | - Amal O Amer
- Department of Microbial Infection and Immunity, Columbus, OH, USA; Dorothy M. Davis Heart and Lung Research Institute, Columbus, OH, USA; The Ohio State University College of Medicine, Columbus, OH, USA.
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