Personal profile
Research Interests
Epigenetic alterations underlie a wide variety of pathologies, including cancer, by regulating gene activity. There is a great deal of potential for the use of epigenetics as biomarkers for better understanding the early stage biological response and molecular mechanisms. The research in my lab focuses on identifying environmental epigenetic biomarkers and understanding their relationship to risk of disease.
Epigenetic studies in inflammation
My most recent basic research focuses on the development of epigenetic biomarkers and determining their relationship to environmental exposure and the risk of pulmonary dysfunction. After joining the Center for Environmental Health Sciences (CEHS) as a new faculty member in 2012, I started using murine models to examine epigenetic alterations and pulmonary dysfunction after exposure to nanomaterials that play a significant role in lung disease. In particular, I am currently researching the effect of multi-walled carbon nanotubes (MWCNT), a new type of engineered nanomaterial, on lung disease and exposure-induced epigenetic alterations. This aforementioned study aims to help identify environmental epigenetic biomarkers for MWCNT exposure and their relationship to MWCNT-induced pulmonary fibrosis and inflammation. I am also working on identifying the relationship between epigenetic biomarkers and indoor PM and dietary exposures in asthmatic children. In addition, I am studying the effect of in utero environmental tobacco smoke exposure on adverse respiratory outcomes in offspring.
Epigenetic studies and environmental factors
I examined the influence of environmental factors (i.e. age) and personal living style (i.e. diet, smoking and drinking) in epigenetic patterns as a means for understanding the onset of chronic disease. Recently, I determined the effects of age, tobacco smoking and alcohol drinking status on global DNA methylation in healthy subjects. In addition, I researched the impact of a high fat diet on methylation patterns in mice.
Epigenetic studies in breast cancer
I conducted several breast cancer studies using two large cohorts: Long Island Breast Cancer Study Project and Breast Cancer Family Registry. Within these projects, I focused on the development of epigenetic biomarkers, specifically global and gene-specific methylation for risk of breast cancer.
Teaching Experience
PHAR 444 - Pharmacol/Tox II
PHAR 559 - Public Health & Pharmacoeconomics
BMED 642 - Toxicology II
BMED 643 - Cellular and Molecualar Toxicology
BMED 593 - Current Research Literature
Education/Academic qualification
Doctorate, Public Health, Seoul National University
Expertise related to UN Sustainable Development Goals
In 2015, UN member states agreed to 17 global Sustainable Development Goals (SDGs) to end poverty, protect the planet and ensure prosperity for all. This person’s work contributes towards the following SDG(s):
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SDG 3 Good Health and Well-being
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Collaborations and top research areas from the last five years
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Long-term exposure to Di(2-ethylhexyl) phthalate induced uterine histopathologic alterations in female mice
Lee, J. Y., Kim, J. S., Zaheer, J., Chang, S. H., Choi, K., Hwang, D. W., Lee, J., Kim, Y. A. & Cho, Y. H., Apr 2026, In: Toxicology and Applied Pharmacology. 509, 117738.Research output: Contribution to journal › Article › peer-review
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Parabens in over-the-counter drugs for pediatric use and their contribution to body burden
Ihn, Y., Kim, S., Lee, G., Kim, W., Park, S., Cho, Y. H., Park, Y. J., Park, J., Kho, Y. & Choi, K., Feb 2026, In: Journal of Hazardous Materials Advances. 21, 101085.Research output: Contribution to journal › Article › peer-review
Open Access -
Association of urinary levels of trace metals with type 2 diabetes and obesity in postmenopausal women in Korea: A community-based cohort study
Moon, M. K., Lee, G., Choi, S., Lee, I., Lee, A., Kim, M. J., Park, S., Cho, Y. H., Park, Y. J., Oh, S., Park, J., Cho, N. H. & Choi, K., Mar 2025, In: International Journal of Hygiene and Environmental Health. 264, 114508.Research output: Contribution to journal › Article › peer-review
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Relationship of parental phthalate exposure with fetal growth and placental development at birth
Chang, H. J., Cho, Y. H., Yoon, Y. S., Kho, Y., Lee, J. Y., Hwang, D. W., Han, J. Y., Lee, J. & Kim, Y. A., Oct 2025, In: Reproductive Toxicology. 137, 109025.Research output: Contribution to journal › Article › peer-review
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Gender- and Age-Group Specific Association of Persistent Organic Pollutants (POPs) Exposure with Diabetes Mellitus: Korean National Environmental Health Survey (KoNEHS) 2015-2017
Lee, I., Kim, M. J., Choi, S., Park, Y. J., Park, J., Ayaz, G. N., Lee, G., Cho, Y. H., Jeon, H. L., Lee, C., Cheon, G. J., Moon, M. K. & Choi, K., Mar 15 2024, In: Environment and Health. 2, 5, p. 322-331 10 p.Research output: Contribution to journal › Article › peer-review
Open Access3 Scopus citations