Secretion of Recombinant Interleukin-22 by Engineered <named-content content-type="genus-species">Lactobacillus reuteri</named-content> Reduces Fatty Liver Disease in a Mouse Model of Diet-Induced Obesity
ABSTRACT The incidence of metabolic syndrome continues to rise globally. In mice, intravenous administration of interleukin-22 (IL-22) ameliorates various disease phenotypes associated with diet-induced metabolic syndrome. In patients, oral treatment is favored over intravenous treatment, but method...
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American Society for Microbiology
2020
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oai:doaj.org-article:0f213e589b174cc3ad9814872f2e3b932021-11-15T15:30:15ZSecretion of Recombinant Interleukin-22 by Engineered <named-content content-type="genus-species">Lactobacillus reuteri</named-content> Reduces Fatty Liver Disease in a Mouse Model of Diet-Induced Obesity10.1128/mSphere.00183-202379-5042https://doaj.org/article/0f213e589b174cc3ad9814872f2e3b932020-06-01T00:00:00Zhttps://journals.asm.org/doi/10.1128/mSphere.00183-20https://doaj.org/toc/2379-5042ABSTRACT The incidence of metabolic syndrome continues to rise globally. In mice, intravenous administration of interleukin-22 (IL-22) ameliorates various disease phenotypes associated with diet-induced metabolic syndrome. In patients, oral treatment is favored over intravenous treatment, but methodologies to deliver IL-22 via the oral route are nonexistent. The goal of this study was to assess to what extent engineered Lactobacillus reuteri secreting IL-22 could ameliorate nonalcoholic fatty liver disease. We used a mouse model of diet-induced obesity and assessed various markers of metabolic syndrome following treatment with L. reuteri and a recombinant derivative. Mice that received an 8-week treatment of wild-type probiotic gained less weight and had a smaller fat pad than the control group, but these phenotypes were not further enhanced by recombinant L. reuteri. However, L. reuteri secreting IL-22 significantly reduced liver weight and triglycerides at levels that exceeded those of the probiotic wild-type treatment group. Our findings are interesting in light of the observed phenotypes associated with reduced nonalcoholic liver disease, in humans the most prevalent chronic liver disease, following treatment of a next-generation probiotic that is administered orally. Once biological and environmental containment strategies are in place, therapeutic applications of recombinant Lactobacillus reuteri are on the horizon. IMPORTANCE In humans, nonalcoholic fatty liver disease (NAFLD) is the most prevalent liver disease due to the increased prevalence of obesity. While treatment of NAFLD is often geared toward lifestyle changes, such as diet and exercise, the use of dietary supplements such as probiotics is underinvestigated. Here, we report that probiotic Lactobacillus reuteri reduces fatty liver in a mouse model of diet-induced obesity. This phenotype was further enhanced upon delivery of recombinant interleukin-22 by engineered Lactobacillus reuteri. These observations pave the road to a better understanding of probiotic mechanisms driving the reduction of diet-induced steatosis and to development of next-generation probiotics for use in the clinic. Ultimately, these studies may lead to rational selection of (engineered) probiotics to ameliorate fatty liver disease.Jee-Hwan OhKathryn L. SchuelerDonnie S. StapletonLaura M. AlexanderChi-Liang Eric YenMark P. KellerAlan D. AttieJan-Peter van PijkerenAmerican Society for Microbiologyarticlediet-induced metabolic syndromefatty liver diseaseIL-22Lactobacillus reuteriprobioticengineered probioticMicrobiologyQR1-502ENmSphere, Vol 5, Iss 3 (2020) |
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diet-induced metabolic syndrome fatty liver disease IL-22 Lactobacillus reuteri probiotic engineered probiotic Microbiology QR1-502 |
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diet-induced metabolic syndrome fatty liver disease IL-22 Lactobacillus reuteri probiotic engineered probiotic Microbiology QR1-502 Jee-Hwan Oh Kathryn L. Schueler Donnie S. Stapleton Laura M. Alexander Chi-Liang Eric Yen Mark P. Keller Alan D. Attie Jan-Peter van Pijkeren Secretion of Recombinant Interleukin-22 by Engineered <named-content content-type="genus-species">Lactobacillus reuteri</named-content> Reduces Fatty Liver Disease in a Mouse Model of Diet-Induced Obesity |
description |
ABSTRACT The incidence of metabolic syndrome continues to rise globally. In mice, intravenous administration of interleukin-22 (IL-22) ameliorates various disease phenotypes associated with diet-induced metabolic syndrome. In patients, oral treatment is favored over intravenous treatment, but methodologies to deliver IL-22 via the oral route are nonexistent. The goal of this study was to assess to what extent engineered Lactobacillus reuteri secreting IL-22 could ameliorate nonalcoholic fatty liver disease. We used a mouse model of diet-induced obesity and assessed various markers of metabolic syndrome following treatment with L. reuteri and a recombinant derivative. Mice that received an 8-week treatment of wild-type probiotic gained less weight and had a smaller fat pad than the control group, but these phenotypes were not further enhanced by recombinant L. reuteri. However, L. reuteri secreting IL-22 significantly reduced liver weight and triglycerides at levels that exceeded those of the probiotic wild-type treatment group. Our findings are interesting in light of the observed phenotypes associated with reduced nonalcoholic liver disease, in humans the most prevalent chronic liver disease, following treatment of a next-generation probiotic that is administered orally. Once biological and environmental containment strategies are in place, therapeutic applications of recombinant Lactobacillus reuteri are on the horizon. IMPORTANCE In humans, nonalcoholic fatty liver disease (NAFLD) is the most prevalent liver disease due to the increased prevalence of obesity. While treatment of NAFLD is often geared toward lifestyle changes, such as diet and exercise, the use of dietary supplements such as probiotics is underinvestigated. Here, we report that probiotic Lactobacillus reuteri reduces fatty liver in a mouse model of diet-induced obesity. This phenotype was further enhanced upon delivery of recombinant interleukin-22 by engineered Lactobacillus reuteri. These observations pave the road to a better understanding of probiotic mechanisms driving the reduction of diet-induced steatosis and to development of next-generation probiotics for use in the clinic. Ultimately, these studies may lead to rational selection of (engineered) probiotics to ameliorate fatty liver disease. |
format |
article |
author |
Jee-Hwan Oh Kathryn L. Schueler Donnie S. Stapleton Laura M. Alexander Chi-Liang Eric Yen Mark P. Keller Alan D. Attie Jan-Peter van Pijkeren |
author_facet |
Jee-Hwan Oh Kathryn L. Schueler Donnie S. Stapleton Laura M. Alexander Chi-Liang Eric Yen Mark P. Keller Alan D. Attie Jan-Peter van Pijkeren |
author_sort |
Jee-Hwan Oh |
title |
Secretion of Recombinant Interleukin-22 by Engineered <named-content content-type="genus-species">Lactobacillus reuteri</named-content> Reduces Fatty Liver Disease in a Mouse Model of Diet-Induced Obesity |
title_short |
Secretion of Recombinant Interleukin-22 by Engineered <named-content content-type="genus-species">Lactobacillus reuteri</named-content> Reduces Fatty Liver Disease in a Mouse Model of Diet-Induced Obesity |
title_full |
Secretion of Recombinant Interleukin-22 by Engineered <named-content content-type="genus-species">Lactobacillus reuteri</named-content> Reduces Fatty Liver Disease in a Mouse Model of Diet-Induced Obesity |
title_fullStr |
Secretion of Recombinant Interleukin-22 by Engineered <named-content content-type="genus-species">Lactobacillus reuteri</named-content> Reduces Fatty Liver Disease in a Mouse Model of Diet-Induced Obesity |
title_full_unstemmed |
Secretion of Recombinant Interleukin-22 by Engineered <named-content content-type="genus-species">Lactobacillus reuteri</named-content> Reduces Fatty Liver Disease in a Mouse Model of Diet-Induced Obesity |
title_sort |
secretion of recombinant interleukin-22 by engineered <named-content content-type="genus-species">lactobacillus reuteri</named-content> reduces fatty liver disease in a mouse model of diet-induced obesity |
publisher |
American Society for Microbiology |
publishDate |
2020 |
url |
https://doaj.org/article/0f213e589b174cc3ad9814872f2e3b93 |
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