Discovery Park Undergraduate Research Internship Program

"Assessing genetic and epigenetic mechanisms of the developmental origin of cancer associated with exposure to an endocrine disrupting herbicide"

About the Project

Project Time & Type:
Full-Year 2017 - CPIP
Research area(s):
Endocrine disruption, molecular and environmental toxicology, cancer, melanoma, epigenetics
Project Description:
Endocrine disrupting chemicals (EDCs) are exogenous agents that alter processes in the regulatory pathways of the endocrine system and can result in an imbalance in hormone production, release and transport from glands, disruption of binding to receptors and eventually lead to the development of a variety of diseases including cancer. Atrazine is one of the most commonly used herbicides in the Midwestern United States and is often reported to contaminate potable water supplies. Atrazine is a noted endocrine disruptor with evidence indicating exposure can result in alterations of the reproductive system in females and males, as well as influencing cancer risk. While most EDCs operate through receptor-mediated processes, acting as mimetics of the hormones they disrupt, atrazine has been shown to be nonreceptor-mediated. The molecular mechanism by which atrazine exerts its toxic effects is therefore unique with respect to other endocrine disruptors and is not fully understood. In our laboratory, we are identifying the underlying genetic and epigenetic mechanisms associated with atrazine exposure. We are using the zebrafish vertebrate model system as a tool to investigate the immediate toxic effects of a developmental exposure and the later in life impacts of the developmental exposure on disease pathogenesis including carcinogenesis. This study is providing further information pertinent to the continual evaluation of the risk of carcinogenicity associated with exposure to this herbicide.
Expected Student Contributions:
The student will actively participate in collecting and analyzing research data including genomics, targeted gene and protein expression, epigenetics, and morphological/histological endpoints.
Related Website(s):
https://www.purdue.edu/hhs/hsci/directory/faculty/freeman_jennifer.html https://www.youtube.com/watch?v=lz0fDBGEVc
Desired Qualifications:
GPA 3.0 or greater with some background in biology, chemistry, biochemistry, and genetics.
Estimated Weekly Hours:
6
Department awards independent research credits for this project?
Yes, 2 credit hours

Professor in Charge

Name:
Freeman, Jennifer
Deptartment/College:
Health Sciences

Student Supervisor

Name:
Jennifer Freeman
Title:
Associate Professor of Toxicology

Cooperating Faculty

Name:
Maria Sepulveda
Deptartment/College:
FNR / Agriculture