Science Inventory

EXPRESSION PROFILING OF ESTROGENIC COMPOUNDS USING A SHEEPSHEAD MINNOW CDNA MACROARRAY

Citation:

Larkin, P., L C. Folmar, M J. Hemmer, A. J. Poston, AND N D. Denslow. EXPRESSION PROFILING OF ESTROGENIC COMPOUNDS USING A SHEEPSHEAD MINNOW CDNA MACROARRAY. ENVIRONMENTAL HEALTH PERSPECTIVES III(6):839-846, (2003).

Impact/Purpose:

Journal article

Description:

Larkin, Patrick, Leroy C. Folmar, Michael J. Hemmer, Arianna J. Poston and Nancy D. Denslow. 2003. Expression Profiling of Estrogenic Compounds Using a Sheepshead Minnow cDNA Macroarray. Environ. Health Perspect. 111(6):839-846. (ERL,GB 1171).

A variety of anthropogenic compounds are capable of binding to the estrogen receptor (ER) of vertebrate species. Binding of these chemicals to the ER can interfere with homeostasis by altering normal gene expression patterns. The purpose of this study was to characterize the expression of 30 genes using a sheepshead minnow (Cyprinodon variegatus) cDNA macroarray. Many of the genes on the array were previously identified by differential display reverse transcriptase-polymerase chain reaction to be upregulated or downregulated in sheepshead minnows treated through aqueous exposure to known or suspected estrogenic chemicals. The results of this study show that 17b-estradiol (E2), 17a-ethinyl estradiol (EE2), diethylstilbestrol (DES), and methoxychlor (MXC) have similar genetic signature for the 30 genes examined. The genetic signature of fish treated with p-nonlyphenol (pNP) was identical in pattern to fish treated with E2, EE2, DES, and MXC except for the additional upregulation of a cDNA clone that shares similarity to ubiquitin-conjugating enzyme 9. Endosulfan produced results that resembled the gene expression patterns of untreated control fish with exception of the upregulation of estrogen receptor a and the downregulation of a cDNA clone that shares similarity to 3-hydroxy-3-methylglutaryl-coenzyme A reductase. We show that our estrogen-responsive cDNA macroarray can detect dose-dependent changes in gene expression patterns in fish treated with EE2.

Record Details:

Record Type: DOCUMENT (JOURNAL/PEER REVIEWED JOURNAL)
Product Published Date: 05/01/2003
Record Last Revised: 09/17/2013
OMB Category: Other
Record ID: 85071

Organization:

U.S. ENVIRONMENTAL PROTECTION AGENCY

OFFICE OF RESEARCH AND DEVELOPMENT

NATIONAL HEALTH AND ENVIRONMENTAL EFFECTS RESEARCH LABORATORY

GULF ECOLOGY DIVISION

ECOLOGICAL DIAGNOSTICS BRANCH