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Folate Acts in E. coli to Accelerate C. elegans Aging Independently of Bacterial Biosynthesis

Identifieur interne : 000061 ( Main/Exploration ); précédent : 000060; suivant : 000062

Folate Acts in E. coli to Accelerate C. elegans Aging Independently of Bacterial Biosynthesis

Auteurs : Bhupinder Virk [Royaume-Uni] ; Jie Jia [Royaume-Uni, République populaire de Chine] ; Claire A. Maynard [Royaume-Uni] ; Adelaide Raimundo [Royaume-Uni] ; Jolien Lefebvre [Royaume-Uni, Belgique] ; Shane A. Richards [Royaume-Uni] ; Natalia Chetina [Royaume-Uni] ; Yen Liang [Royaume-Uni] ; Noel Helliwell [Royaume-Uni] ; Marta Cipinska [Royaume-Uni] ; David Weinkove [Royaume-Uni]

Source :

RBID : PMC:4767678

Abstract

Summary

Folates are cofactors for biosynthetic enzymes in all eukaryotic and prokaryotic cells. Animals cannot synthesize folate and must acquire it from their diet or microbiota. Previously, we showed that inhibiting E. coli folate synthesis increases C. elegans lifespan. Here, we show that restriction or supplementation of C. elegans folate does not influence lifespan. Thus, folate is required in E. coli to shorten worm lifespan. Bacterial proliferation in the intestine has been proposed as a mechanism for the life-shortening influence of E. coli. However, we found no correlation between C. elegans survival and bacterial growth in a screen of 1,000+ E. coli deletion mutants. Nine mutants increased worm lifespan robustly, suggesting specific gene regulation is required for the life-shortening activity of E. coli. Disrupting the biosynthetic folate cycle did not increase lifespan. Thus, folate acts through a growth-independent route in E. coli to accelerate animal aging.


Url:
DOI: 10.1016/j.celrep.2016.01.051
PubMed: 26876180
PubMed Central: 4767678


Affiliations:


Links toward previous steps (curation, corpus...)


Le document en format XML

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<p>Folates are cofactors for biosynthetic enzymes in all eukaryotic and prokaryotic cells. Animals cannot synthesize folate and must acquire it from their diet or microbiota. Previously, we showed that inhibiting
<italic>E. coli</italic>
folate synthesis increases
<italic>C. elegans</italic>
lifespan. Here, we show that restriction or supplementation of
<italic>C. elegans</italic>
folate does not influence lifespan. Thus, folate is required in
<italic>E. coli</italic>
to shorten worm lifespan. Bacterial proliferation in the intestine has been proposed as a mechanism for the life-shortening influence of
<italic>E. coli</italic>
. However, we found no correlation between
<italic>C. elegans</italic>
survival and bacterial growth in a screen of 1,000+
<italic>E. coli</italic>
deletion mutants. Nine mutants increased worm lifespan robustly, suggesting specific gene regulation is required for the life-shortening activity of
<italic>E. coli</italic>
. Disrupting the biosynthetic folate cycle did not increase lifespan. Thus, folate acts through a growth-independent route in
<italic>E. coli</italic>
to accelerate animal aging.</p>
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<name sortKey="Blaser, M J" uniqKey="Blaser M">M.J. Blaser</name>
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</author>
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<name sortKey="Dang, P" uniqKey="Dang P">P. Dang</name>
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<author>
<name sortKey="Furukawa, S" uniqKey="Furukawa S">S. Furukawa</name>
</author>
<author>
<name sortKey="Larsen, P L" uniqKey="Larsen P">P.L. Larsen</name>
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<author>
<name sortKey="Clarke, C F" uniqKey="Clarke C">C.F. Clarke</name>
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<name sortKey="Sanchez Roman, I" uniqKey="Sanchez Roman I">I. Sanchez-Roman</name>
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<author>
<name sortKey="Barja, G" uniqKey="Barja G">G. Barja</name>
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<name sortKey="Lambert, M A" uniqKey="Lambert M">M.A. Lambert</name>
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<name sortKey="Fagan, R P" uniqKey="Fagan R">R.P. Fagan</name>
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<name sortKey="Palmer, T" uniqKey="Palmer T">T. Palmer</name>
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<name sortKey="Xie, Y" uniqKey="Xie Y">Y. Xie</name>
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<name sortKey="Paul Satyaseela, M" uniqKey="Paul Satyaseela M">M. Paul-Satyaseela</name>
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<name sortKey="Kim, K S" uniqKey="Kim K">K.S. Kim</name>
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<name sortKey="Jia, J" uniqKey="Jia J">J. Jia</name>
</author>
<author>
<name sortKey="Oberleitner, N" uniqKey="Oberleitner N">N. Oberleitner</name>
</author>
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<name sortKey="Briggs, Z" uniqKey="Briggs Z">Z. Briggs</name>
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<name sortKey="Ward, J" uniqKey="Ward J">J. Ward</name>
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<list>
<country>
<li>Belgique</li>
<li>Royaume-Uni</li>
<li>République populaire de Chine</li>
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<name sortKey="Helliwell, Noel" sort="Helliwell, Noel" uniqKey="Helliwell N" first="Noel" last="Helliwell">Noel Helliwell</name>
<name sortKey="Jia, Jie" sort="Jia, Jie" uniqKey="Jia J" first="Jie" last="Jia">Jie Jia</name>
<name sortKey="Lefebvre, Jolien" sort="Lefebvre, Jolien" uniqKey="Lefebvre J" first="Jolien" last="Lefebvre">Jolien Lefebvre</name>
<name sortKey="Liang, Yen" sort="Liang, Yen" uniqKey="Liang Y" first="Yen" last="Liang">Yen Liang</name>
<name sortKey="Maynard, Claire A" sort="Maynard, Claire A" uniqKey="Maynard C" first="Claire A." last="Maynard">Claire A. Maynard</name>
<name sortKey="Raimundo, Adelaide" sort="Raimundo, Adelaide" uniqKey="Raimundo A" first="Adelaide" last="Raimundo">Adelaide Raimundo</name>
<name sortKey="Richards, Shane A" sort="Richards, Shane A" uniqKey="Richards S" first="Shane A." last="Richards">Shane A. Richards</name>
<name sortKey="Weinkove, David" sort="Weinkove, David" uniqKey="Weinkove D" first="David" last="Weinkove">David Weinkove</name>
<name sortKey="Weinkove, David" sort="Weinkove, David" uniqKey="Weinkove D" first="David" last="Weinkove">David Weinkove</name>
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<name sortKey="Jia, Jie" sort="Jia, Jie" uniqKey="Jia J" first="Jie" last="Jia">Jie Jia</name>
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