Vitamin B12 produced by gut bacteria modulates cholinergic signalling

被引:12
|
作者
Kang, Woo Kyu [1 ]
Florman, Jeremy T. [1 ]
Araya, Antonia [1 ]
Fox, Bennett W. [2 ,3 ]
Thackeray, Andrea [1 ]
Schroeder, Frank C. [2 ,3 ]
Walhout, Albertha J. M. [4 ]
Alkema, Mark J. [1 ]
机构
[1] Univ Massachusetts, Chan Med Sch, Dept Neurobiol, Worcester, MA 01605 USA
[2] Cornell Univ, Boyce Thompson Inst, Ithaca, NY USA
[3] Cornell Univ, Dept Chem & Chem Biol, Ithaca, NY USA
[4] Univ Massachusetts, Chan Med Sch, Dept Syst Biol, Worcester, MA 01605 USA
关键词
D O I
10.1038/s41556-023-01299-2
中图分类号
Q2 [细胞生物学];
学科分类号
071009 ; 090102 ;
摘要
A growing body of evidence indicates that gut microbiota influence brain function and behaviour. However, the molecular basis of how gut bacteria modulate host nervous system function is largely unknown. Here we show that vitamin B-12-producing bacteria that colonize the intestine can modulate excitatory cholinergic signalling and behaviour in the host Caenorhabditis elegans. Here we demonstrate that vitamin B-12 reduces cholinergic signalling in the nervous system through rewiring of the methionine (Met)/S-adenosylmethionine cycle in the intestine. We identify a conserved metabolic crosstalk between the methionine/S-adenosylmethionine cycle and the choline-oxidation pathway. In addition, we show that metabolic rewiring of these pathways by vitamin B-12 reduces cholinergic signalling by limiting the availability of free choline required by neurons to synthesize acetylcholine. Our study reveals a gut-brain communication pathway by which enteric bacteria modulate host behaviour and may affect neurological health.
引用
收藏
页码:72 / +
页数:26
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