Excess Dietary Sugar Alters Colonocyte Metabolism and Impairs the Proliferative Response to Damage.
Colitis
DCA
Mitochondria
Renewal
Stemness
Journal
Cellular and molecular gastroenterology and hepatology
ISSN: 2352-345X
Titre abrégé: Cell Mol Gastroenterol Hepatol
Pays: United States
ID NLM: 101648302
Informations de publication
Date de publication:
2023
2023
Historique:
received:
27
10
2022
revised:
03
05
2023
accepted:
04
05
2023
medline:
21
7
2023
pubmed:
13
5
2023
entrez:
12
5
2023
Statut:
ppublish
Résumé
The colonic epithelium requires continuous renewal by crypt resident intestinal stem cells (ISCs) and transit-amplifying (TA) cells to maintain barrier integrity, especially after inflammatory damage. The diet of high-income countries contains increasing amounts of sugar, such as sucrose. ISCs and TA cells are sensitive to dietary metabolites, but whether excess sugar affects their function directly is unknown. Here, we used a combination of 3-dimensional colonoids and a mouse model of colon damage/repair (dextran sodium sulfate colitis) to show the direct effect of sugar on the transcriptional, metabolic, and regenerative functions of crypt ISCs and TA cells. We show that high-sugar conditions directly limit murine and human colonoid development, which is associated with a reduction in the expression of proliferative genes, adenosine triphosphate levels, and the accumulation of pyruvate. Treatment of colonoids with dichloroacetate, which forces pyruvate into the tricarboxylic acid cycle, restored their growth. In concert, dextran sodium sulfate treatment of mice fed a high-sugar diet led to massive irreparable damage that was independent of the colonic microbiota and its metabolites. Analyses on crypt cells from high-sucrose-fed mice showed a reduction in the expression of ISC genes, impeded proliferative potential, and increased glycolytic potential without a commensurate increase in aerobic respiration. Taken together, our results indicate that short-term, excess dietary sucrose can directly modulate intestinal crypt cell metabolism and inhibit ISC/TA cell regenerative proliferation. This knowledge may inform diets that better support the treatment of acute intestinal injury.
Sections du résumé
BACKGROUND & AIMS
The colonic epithelium requires continuous renewal by crypt resident intestinal stem cells (ISCs) and transit-amplifying (TA) cells to maintain barrier integrity, especially after inflammatory damage. The diet of high-income countries contains increasing amounts of sugar, such as sucrose. ISCs and TA cells are sensitive to dietary metabolites, but whether excess sugar affects their function directly is unknown.
METHODS
Here, we used a combination of 3-dimensional colonoids and a mouse model of colon damage/repair (dextran sodium sulfate colitis) to show the direct effect of sugar on the transcriptional, metabolic, and regenerative functions of crypt ISCs and TA cells.
RESULTS
We show that high-sugar conditions directly limit murine and human colonoid development, which is associated with a reduction in the expression of proliferative genes, adenosine triphosphate levels, and the accumulation of pyruvate. Treatment of colonoids with dichloroacetate, which forces pyruvate into the tricarboxylic acid cycle, restored their growth. In concert, dextran sodium sulfate treatment of mice fed a high-sugar diet led to massive irreparable damage that was independent of the colonic microbiota and its metabolites. Analyses on crypt cells from high-sucrose-fed mice showed a reduction in the expression of ISC genes, impeded proliferative potential, and increased glycolytic potential without a commensurate increase in aerobic respiration.
CONCLUSIONS
Taken together, our results indicate that short-term, excess dietary sucrose can directly modulate intestinal crypt cell metabolism and inhibit ISC/TA cell regenerative proliferation. This knowledge may inform diets that better support the treatment of acute intestinal injury.
Identifiants
pubmed: 37172822
pii: S2352-345X(23)00063-2
doi: 10.1016/j.jcmgh.2023.05.001
pmc: PMC10394273
pii:
doi:
Substances chimiques
Dietary Sugars
0
sodium sulfate
0YPR65R21J
Dextrans
0
Pyruvates
0
Types de publication
Journal Article
Research Support, N.I.H., Extramural
Research Support, Non-U.S. Gov't
Langues
eng
Sous-ensembles de citation
IM
Pagination
287-316Subventions
Organisme : NCI NIH HHS
ID : P30 CA045508
Pays : United States
Organisme : NIDDK NIH HHS
ID : R01 DK120986
Pays : United States
Organisme : NIAID NIH HHS
ID : T32 AI089443
Pays : United States
Informations de copyright
Copyright © 2023 The Authors. Published by Elsevier Inc. All rights reserved.
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