An epigenetic molluscicide
Luviano, N.; Halby, L.; Jallet, C.; Arimondo, P.; Cosseau, C.; Grunau, C.
Show abstract
Biomphalaria glabrata is a fresh-water mollusk that serves as obligatory intermediate host to Schistosoma mansoni, agent of the neglected tropical disease schistosomiasis that affects roughly 250 Mio people. One of the ways to control the pathogenic agent is to interrupt the life cycle by eliminating the intermediate snail host though foal treatment of water bodies with molluscicides. Currently recommended molluscicides were developed in the 1950ths and lack sufficient specificity, e.g., they are toxic to fish. To provide new lead compounds for the development of a new type of molluscicides we used a rational approach based on the hypotheses that interfering with an important epigenetic mark, DNA methylation, would impede development of the snail host. We present here the compound 29, analogues-based compound that mimic substrates of DNA methyltransferases. We show that compound 29 has (i) low cytotoxicity for human cells, (ii) it inhibits DNA methylation, and (iii) it decreases fecundity in B.glabrata. It is therefore conceivable to produce compounds that act as specific epigenetic molluscicides.
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