In this application for a 5-year K23 Career Development Award, I propose mentored research and career development leading toward a career as an independent clinical and translational investigator in interstitial lung disease. The goal of this research project is to identify the role of high-density lipoprotein in idiopathic pulmonary fibrosis (IPF), a fatal lung disease that affects 1 out of 200 older adults and has a median survival of 3-5 years from diagnosis. Currently there is no medical therapy that improves symptoms or reverses fibrosis in IPF patients. This proposal builds upon my preliminary data showing that high levels of high density cholesterol (HDL-C) are associated with a reduction in lung injury, inflammation and fibrosis (subclinical ILD) on CT in community-dwelling adults enrolled in the NHLBI-funded Multi-Ethnic Study of Atherosclerosis. These data are consistent with animal model data showing that treatment with apolipoprotein A-I (ApoA-I; the main component of HDL) attenuates lung fibrosis. Under the mentorship of Dr. David Lederer, I am therefore proposing to examine the associations of HDL and its main components (ApoA-I, ApoA-II, and paroxonase-1) with clinical outcomes and serum biomarkers of lung injury, inflammation and remodeling in adults with clinically-diagnosed IPF enrolled in Dr. Lederer's FAR-ILD study (Families At-Risk for ILD; R01 HL103676-06, scored 5th percentile Dec 2016). I will also explore the structure (using quantitative proteomics in Dr. Emily Chen's lab) and function (using a macrophage efflux assay in Dr. Alan Tall's lab) of HDL particles in adults with IPF as well as in two comparator groups: first-degree family members with subclinical ILD enrolled in the FAR-ILD study, and healthy controls. With guidance from my mentors, I have crafted a 5-year career development plan that includes training in lipoprotein biology (co-mentor: Dr. Tall), quantitative proteomics (co-mentor: Dr. Chen), clinical epidemiology (Dr. Lederer), and biostatistics (Dr. RoyChoudhury). In the last two years of the award I will apply for R01 funding and transition to independence. The proposed activities will prepare me to conduct patient-oriented and translational research to discover novel risk factors for IPF and other ILDs. I will also be prepared to design and conduct clinical trials targeting novel pathways (including those uncovered in this K23 proposal) to prevent and treat ILD.

Public Health Relevance

Interstitial lung disease (ILD) are common in older adults, occur without an obvious cause, are associated with a high mortality rate, and have few available therapies. We propose to establish low levels of high density lipoprotein (HDL) cholesterol as a novel targetable risk factor in adults with ILD. Our findings may lead to future clinical trials of therapies that raise HDL for the treatment and prevention of ILD.

Agency
National Institute of Health (NIH)
Institute
National Heart, Lung, and Blood Institute (NHLBI)
Type
Mentored Patient-Oriented Research Career Development Award (K23)
Project #
1K23HL140199-01
Application #
9431610
Study Section
NHLBI Mentored Clinical and Basic Science Review Committee (MCBS)
Program Officer
Colombini-Hatch, Sandra
Project Start
2018-01-19
Project End
2022-12-31
Budget Start
2018-01-19
Budget End
2018-12-31
Support Year
1
Fiscal Year
2018
Total Cost
Indirect Cost
Name
Columbia University (N.Y.)
Department
Internal Medicine/Medicine
Type
Schools of Medicine
DUNS #
621889815
City
New York
State
NY
Country
United States
Zip Code
10032