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Antimicrobial capacity of the freshwater planarians against S. aureus is under the control of Timeless.


ABSTRACT: Planarians, which are non-parasitic flatworms, are highly resistant to bacterial infections. To better understand the mechanisms underlying this resistance, we investigated the role of the circadian machinery in the anti-bacterial response of the freshwater planarian Schmidtea mediterranea. We identified Smed-Tim from S. mediterranea as a homolog of the mammalian clock gene Tim. We showed via RNA interference that Smed-Tim is required for the anti-microbial activities of Schmidtea mediterranea against Staphylococcus aureus infection during the light/dark cycle. Indeed, S. aureus infection leads to the expression of Smed-Tim, which in turn promotes Smed-Traf6 and Smed-morn2, but not Smed-p38 MAPK expression, 2 master regulators of planarian anti-microbial responses.

SUBMITTER: Tsoumtsa LL 

PROVIDER: S-EPMC5711420 | biostudies-literature | 2017 Oct

REPOSITORIES: biostudies-literature

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Antimicrobial capacity of the freshwater planarians against S. aureus is under the control of Timeless.

Tsoumtsa Landry Laure LL   Torre Cedric C   Trouplin Virginie V   Coiffard Benjamin B   Gimenez Gregory G   Mege Jean-Louis JL   Ghigo Eric E  

Virulence 20170104 7


Planarians, which are non-parasitic flatworms, are highly resistant to bacterial infections. To better understand the mechanisms underlying this resistance, we investigated the role of the circadian machinery in the anti-bacterial response of the freshwater planarian Schmidtea mediterranea. We identified Smed-Tim from S. mediterranea as a homolog of the mammalian clock gene Tim. We showed via RNA interference that Smed-Tim is required for the anti-microbial activities of Schmidtea mediterranea a  ...[more]

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