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A Chemical Screen to Identify Inducers of the Mitochondrial Unfolded Protein Response in C. Elegans

A Chemical Screen to Identify Inducers of the Mitochondrial Unfolded Protein Response in C. Elegans

Manish Rauthan, Marc Pilon

Worm. 2015 Oct 2;4(4):e1096490.

PMID: 27123370

Abstract:

We previously showed that inhibition of the mevalonate pathway in C. elegans causes inhibition of protein prenylation, developmental arrest and lethality. We also showed that constitutive activation of the mitochondrial unfolded protein response, UPR(mt), is an effective way for C. elegans to become resistant to the negative effects of mevalonate pathway inhibition. This was an important finding since statins, a drug class prescribed to lower cholesterol levels in patients, act by inhibiting the mevalonate pathway, and it is therefore possible that some of their undesirable side effects could be alleviated by activating the UPR(mt). Here, we screened a chemical library and identified 4 compounds that specifically activated the UPR(mt). One of these compounds, methacycline hydrochloride (a tetracycline antibiotic) also protected C. elegans and mammalian cells from statin toxicity. Methacycline hydrochloride and ethidium bromide, a known UPR(mt) activator, were also tested in mice: only ethidium bromide significantly activate the UPR(mt) in skeletal muscles.

Chemicals Related in the Paper:

Catalog Number	Product Name	Structure	CAS Number	Price
AP3963959-B	Methacycline hydrochloride		3963-95-9	Price

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