Abstract Title:

Mapping Proteome-wide Targets of Glyphosate in Mice.

Abstract Source:

Cell Chem Biol. 2017 Feb 16 ;24(2):133-140. Epub 2017 Jan 26. PMID: 28132892

Abstract Author(s):

Breanna Ford, Leslie A Bateman, Leilani Gutierrez-Palominos, Robin Park, Daniel K Nomura

Article Affiliation:

Breanna Ford


Glyphosate, the active ingredient in the herbicide Roundup, is one of the most widely used pesticides in agriculture and home garden use. Whether glyphosate causes any mammalian toxicity remains highly controversial. While many studies have associated glyphosate with numerous adverse health effects, the mechanisms underlying glyphosate toxicity in mammals remain poorly understood. Here, we used activity-based protein profiling to map glyphosate targets in mice. We show that glyphosate at high doses can be metabolized in vivo to reactive metabolites such as glyoxylate and react with cysteines across many proteins in mouse liver. We show that glyoxylate inhibits liver fatty acid oxidation enzymes and glyphosate treatment in mice increases the levels of triglycerides and cholesteryl esters, likely resulting from diversion of fatty acids away from oxidation and toward other lipid pathways. Our study highlights the utility of using chemoproteomics to identify novel toxicological mechanisms of environmental chemicals such as glyphosate.

Study Type : Animal Study

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