William N. Rom

Biosketch / Results /

William Rom

Sol and Judith Bergstein Professor of Medicine, Department of Medicine;Professor, Department of Environmental Medicine
Medicine

Contact Info

Address
462 First Avenue
New York, NY 10016

212/263-6479

Research Summary



In the lower respiratory tract, alveolar macrophages (AMs) phagocytose inorganic particles and microorganisms, thus playing an important role in host defense. AMs have a complex array of intracellular machinery to respond and direct inflammatory and fibrotic processes. Through releasing peptide growth factors such as platelet-derived growth factor and insulin-like growth factor-I, they stimulate fibroblast proliferation and contribute to fibrosis. Through releasing interleukin-8 (IL-8), they attract neutrophils and lymphocytes by chemotaxis to participate in immune-effector functions. The macrophage processes antigen and presents it to naive T lymphocytes, activating them in immune or cytotoxic responses. AMs are a major source of cytokines IL-b, TNF-a, and IL-6, all of which participate in granulomatous lung inflammation. AMs can phagocytose apoptotic neutrophils and lymphocytes participating in programmed cell death.



We also analyze BAL cells, bronchial brush, and microdissected samples from lung resections to search for tumor suppressor gene mutations and gene expression changes that will help us identify workers exposed to asbestos and cigarette smoke making them at high risk for lung cancer.



In tuberculosis studies, we investigate IL-8, TNF-a, IL-1b, and IL-6 roles in the granulomatous response. Regarding the transcriptional regulation of these genes, we identified NF-IL6 enhancer site(s) that respond to Mycobacterium tuberculosis or cytokines stimulated by the mycobacterium. Interferon-g activates AM to enhance M. tuberculosis killing and IL-12 promotes the TH1 cytokine response; we evaluate how these cytokines alter the immune response in vivo by BAL. Also, we study the interaction of NF-IL6 with the natural resistance in the AM (Nramp) gene to dissect the genetic control of AM activation.






Research Interests

Human Alveolar Macrophage Function in Health and Disease; Molecular Mechanisms of Lung Cancer; Molecular Host Response to M tuberculosis; Environmental Health Policy; Asbestos-related diseases

Molecular characterization of the peripheral airway field of cancerization in lung adenocarcinoma
Tsay, Jun-Chieh J; Li, Zhiguo; Yie, Ting-An; Wu, Feng; Segal, Leopoldo; Greenberg, Alissa K; Leibert, Eric; Weiden, Michael D; Pass, Harvey; Munger, John; Statnikov, Alexander; Tchou-Wong, Kam-Meng; Rom, William N
2015-03-01; 1932-6203,PLoS one - id: 1473472, year: 2015 Journal Article

Obliterative bronchiolitis
Barker, Alan F; Bergeron, Anne; Rom, William N; Hertz, Marshall I
2014-05-12; 0028-4793,New England journal of medicine - id: 970282, year: 2014 Journal Article

One Airway: Biomarkers of Protection From Upper And Lower Airway Injury After World Trade Center Exposure
Cho, SJ; Echevarria, GC; Kwon, S; Naveed, B; Schenck, E; Tsukiji, J; Rom, WN; Prezant, DJ; Nolan, A; Weiden, MD
2014-07-29; 1073-449x,American journal of respiratory & critical care medicine - id: 1082582, year: 2014

YKL-40 is a Protective Biomarker for Fatty Liver in World Trade Center Particulate Matter-Exposed Firefighters
Cho, SJ; Echevarria, GC; Lee, YI; Kwon, S; Tsukiji, J; Rom, WN; Prezant, DJ; Nolan, A; Weiden, MD
2014-07-29; 1073-449x,American journal of respiratory & critical care medicine - id: 1082592, year: 2014

YKL-40 is a Protective Biomarker for Fatty Liver in World Trade Center Particulate Matter-Exposed Firefighters
Cho, Soo Jung; Echevarria, Ghislaine C; Lee, Young Im; Kwon, Sophia; Park, Kwan Yong; Tsukiji, Jun; Rom, William N; Prezant, David J; Nolan, Anna; Weiden, Michael D
2015-03-01; 2155-9929,Journal of molecular biomarkers & diagnosis - id: 1473982, year: 2014 JOURNAL ARTICLE