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Chen X, Hou Y, Liao A, Pan L, Yang S, Liu Y, Wang J, Xue Y, Zhang M, Zhu Z, Huang J. Integrated Analysis of Gut Microbiome and Adipose Transcriptome Reveals Beneficial Effects of Resistant Dextrin from Wheat Starch on Insulin Resistance in Kunming Mice. Biomolecules 2024; 14:186. [PMID: 38397423 PMCID: PMC10886926 DOI: 10.3390/biom14020186] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2023] [Revised: 01/14/2024] [Accepted: 01/26/2024] [Indexed: 02/25/2024] Open
Abstract
Systemic chronic inflammation is recognized as a significant contributor to the development of obesity-related insulin resistance. Previous studies have revealed the physiological benefits of resistant dextrin (RD), including obesity reduction, lower fasting glucose levels, and anti-inflammation. The present study investigated the effects of RD intervention on insulin resistance (IR) in Kunming mice, expounding the mechanisms through the gut microbiome and transcriptome of white adipose. In this eight-week study, we investigated changes in tissue weight, glucose-lipid metabolism levels, serum inflammation levels, and lesions of epididymal white adipose tissue (eWAT) evaluated via Hematoxylin and Eosin (H&E) staining. Moreover, we analyzed the gut microbiota composition and transcriptome of eWAT to assess the potential protective effects of RD intervention. Compared with a high-fat, high-sugar diet (HFHSD) group, the RD intervention significantly enhanced glucose homeostasis (e.g., AUC-OGTT, HOMA-IR, p < 0.001), and reduced lipid metabolism (e.g., TG, LDL-C, p < 0.001) and serum inflammation levels (e.g., IL-1β, IL-6, p < 0.001). The RD intervention also led to changes in the gut microbiota composition, with an increase in the abundance of probiotics (e.g., Parabacteroides, Faecalibaculum, and Muribaculum, p < 0.05) and a decrease in harmful bacteria (Colidextribacter, p < 0.05). Moreover, the RD intervention had a noticeable effect on the gene transcription profile of eWAT, and KEGG enrichment analysis revealed that differential genes were enriched in PI3K/AKT, AMPK, in glucose-lipid metabolism, and in the regulation of lipolysis in adipocytes signaling pathways. The findings demonstrated that RD not only ameliorated IR, but also remodeled the gut microbiota and modified the transcriptome profile of eWAT.
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Affiliation(s)
- Xinyang Chen
- Food Laboratory of Zhongyuan, Luohe 462300, China; (X.C.); (Y.H.); (A.L.); (L.P.); (Y.L.); (J.W.); (Y.X.); (M.Z.); (Z.Z.)
- School of Biological Engineering, Henan University of Technology, Zhengzhou 450001, China
| | - Yinchen Hou
- Food Laboratory of Zhongyuan, Luohe 462300, China; (X.C.); (Y.H.); (A.L.); (L.P.); (Y.L.); (J.W.); (Y.X.); (M.Z.); (Z.Z.)
- College of Food and Biological Engineering, Henan University of Animal Husbandry and Economy, Zhengzhou 450046, China;
| | - Aimei Liao
- Food Laboratory of Zhongyuan, Luohe 462300, China; (X.C.); (Y.H.); (A.L.); (L.P.); (Y.L.); (J.W.); (Y.X.); (M.Z.); (Z.Z.)
- School of Biological Engineering, Henan University of Technology, Zhengzhou 450001, China
| | - Long Pan
- Food Laboratory of Zhongyuan, Luohe 462300, China; (X.C.); (Y.H.); (A.L.); (L.P.); (Y.L.); (J.W.); (Y.X.); (M.Z.); (Z.Z.)
- School of Biological Engineering, Henan University of Technology, Zhengzhou 450001, China
| | - Shengru Yang
- College of Food and Biological Engineering, Henan University of Animal Husbandry and Economy, Zhengzhou 450046, China;
| | - Yingying Liu
- Food Laboratory of Zhongyuan, Luohe 462300, China; (X.C.); (Y.H.); (A.L.); (L.P.); (Y.L.); (J.W.); (Y.X.); (M.Z.); (Z.Z.)
- School of Biological Engineering, Henan University of Technology, Zhengzhou 450001, China
| | - Jingjing Wang
- Food Laboratory of Zhongyuan, Luohe 462300, China; (X.C.); (Y.H.); (A.L.); (L.P.); (Y.L.); (J.W.); (Y.X.); (M.Z.); (Z.Z.)
- School of Biological Engineering, Henan University of Technology, Zhengzhou 450001, China
| | - Yingchun Xue
- Food Laboratory of Zhongyuan, Luohe 462300, China; (X.C.); (Y.H.); (A.L.); (L.P.); (Y.L.); (J.W.); (Y.X.); (M.Z.); (Z.Z.)
- School of Biological Engineering, Henan University of Technology, Zhengzhou 450001, China
| | - Mingyi Zhang
- Food Laboratory of Zhongyuan, Luohe 462300, China; (X.C.); (Y.H.); (A.L.); (L.P.); (Y.L.); (J.W.); (Y.X.); (M.Z.); (Z.Z.)
- School of Biological Engineering, Henan University of Technology, Zhengzhou 450001, China
| | - Zhitong Zhu
- Food Laboratory of Zhongyuan, Luohe 462300, China; (X.C.); (Y.H.); (A.L.); (L.P.); (Y.L.); (J.W.); (Y.X.); (M.Z.); (Z.Z.)
- School of Biological Engineering, Henan University of Technology, Zhengzhou 450001, China
| | - Jihong Huang
- Food Laboratory of Zhongyuan, Luohe 462300, China; (X.C.); (Y.H.); (A.L.); (L.P.); (Y.L.); (J.W.); (Y.X.); (M.Z.); (Z.Z.)
- School of Biological Engineering, Henan University of Technology, Zhengzhou 450001, China
- State Key Laboratory of Crop Stress Adaptation and Improvement, College of Agriculture, Henan University, Kaifeng 475004, China
- School of Food and Pharmacy, Xuchang University, Xuchang 461000, China
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Guo L, Quan M, Pang W, Yin Y, Li F. Cytokines and exosomal miRNAs in skeletal muscle-adipose crosstalk. Trends Endocrinol Metab 2023; 34:666-681. [PMID: 37599201 DOI: 10.1016/j.tem.2023.07.006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/04/2023] [Revised: 07/14/2023] [Accepted: 07/25/2023] [Indexed: 08/22/2023]
Abstract
Skeletal muscle and adipose tissues (ATs) are secretory organs that release secretory factors including cytokines and exosomes. These factors mediate muscle-adipose crosstalk to regulate systemic metabolism via paracrine and endocrine pathways. Myokines and adipokines are cytokines secreted by skeletal muscle and ATs, respectively. Exosomes loaded with nucleic acids, proteins, lipid droplets, and organelles can fuse with the cytoplasm of target cells to perform regulatory functions. A major regulatory component of exosomes is miRNA. In addition, numerous novel myokines and adipokines have been identified through technological innovations. These discoveries have identified new biomarkers and sparked new insights into the molecular regulation of skeletal muscle growth and adipose deposition. The knowledge may contribute to potential diagnostic and therapeutic targets in metabolic disease.
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Affiliation(s)
- Liu Guo
- Laboratory of Animal Nutritional Physiology and Metabolic Process, Key Laboratory of Agro-ecological Processes in Subtropical Region, Institute of Subtropical Agriculture, Chinese Academy of Sciences, Changsha, Hunan 410125, China; University of Chinese Academy of Sciences, Beijing 101408, China
| | - Menchus Quan
- Department of Biological Sciences, Purdue University, West Lafayette, IN 47907, USA
| | - Weijun Pang
- Laboratory of Animal Fat Deposition and Muscle Development, College of Animal Science and Technology, Northwest A&F University, Yangling 712100, China
| | - Yulong Yin
- Laboratory of Animal Nutritional Physiology and Metabolic Process, Key Laboratory of Agro-ecological Processes in Subtropical Region, Institute of Subtropical Agriculture, Chinese Academy of Sciences, Changsha, Hunan 410125, China; College of Advanced Agricultural Sciences, University of Chinese Academy of Sciences, Beijing 100049, China.
| | - Fengna Li
- Laboratory of Animal Nutritional Physiology and Metabolic Process, Key Laboratory of Agro-ecological Processes in Subtropical Region, Institute of Subtropical Agriculture, Chinese Academy of Sciences, Changsha, Hunan 410125, China; College of Advanced Agricultural Sciences, University of Chinese Academy of Sciences, Beijing 100049, China.
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Abstract
In this review, we provide a brief synopsis of the connections between adipose tissue and metabolic health and highlight some recent developments in understanding and exploiting adipocyte biology. Adipose tissue plays critical roles in the regulation of systemic glucose and lipid metabolism and secretes bioactive molecules possessing endocrine, paracrine, and autocrine functions. Dysfunctional adipose tissue has a detrimental impact on metabolic health and is intimately involved in key aspects of metabolic diseases such as insulin resistance, lipid overload, inflammation, and organelle stress. Differences in the distribution of fat depots and adipose characteristics relate to divergent degrees of metabolic dysfunction found in metabolically healthy and unhealthy obese individuals. Thermogenic adipocytes increase energy expenditure via mitochondrial uncoupling or adenosine triphosphate-consuming futile substrate cycles, while functioning as a metabolic sink and participating in crosstalk with other metabolic organs. Manipulation of adipose tissue provides a wealth of opportunities to intervene and combat the progression of associated metabolic diseases. We discuss current treatment modalities for obesity including incretin hormone analogs and touch upon emerging strategies with therapeutic potential including exosome-based therapy, pharmacological activation of brown and beige adipocyte thermogenesis, and administration or inhibition of adipocyte-derived factors.
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Affiliation(s)
- Sung-Min An
- Division of Endocrinology, Department of Internal Medicine, University of California Davis School of Medicine, Davis, CA, USA
| | - Seung-Hee Cho
- Division of Endocrinology, Department of Internal Medicine, University of California Davis School of Medicine, Davis, CA, USA
| | - John C. Yoon
- Division of Endocrinology, Department of Internal Medicine, University of California Davis School of Medicine, Davis, CA, USA
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Miranda MA, Macias-Velasco JF, Schmidt H, Lawson HA. Integrated transcriptomics contrasts fatty acid metabolism with hypoxia response in β-cell subpopulations associated with glycemic control. BMC Genomics 2023; 24:156. [PMID: 36978008 PMCID: PMC10052828 DOI: 10.1186/s12864-023-09232-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2022] [Accepted: 03/07/2023] [Indexed: 03/30/2023] Open
Abstract
BACKGROUND Understanding how heterogeneous β-cell function impacts diabetes is imperative for therapy development. Standard single-cell RNA sequencing analysis illuminates some factors driving heterogeneity, but new strategies are required to enhance information capture. RESULTS We integrate pancreatic islet single-cell and bulk RNA sequencing data to identify β-cell subpopulations based on gene expression and characterize genetic networks associated with β-cell function in obese SM/J mice. We identify β-cell subpopulations associated with basal insulin secretion, hypoxia response, cell polarity, and stress response. Network analysis associates fatty acid metabolism and basal insulin secretion with hyperglycemic-obesity, while expression of Pdyn and hypoxia response is associated with normoglycemic-obesity. CONCLUSIONS By integrating single-cell and bulk islet transcriptomes, our study explores β-cell heterogeneity and identifies novel subpopulations and genetic pathways associated with β-cell function in obesity.
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Affiliation(s)
- Mario A Miranda
- Department of Genetics, Washington University School of Medicine, 660 South Euclid Ave, Campus Box 8232, Saint Louis, MO, 63110, USA
| | - Juan F Macias-Velasco
- Department of Genetics, Washington University School of Medicine, 660 South Euclid Ave, Campus Box 8232, Saint Louis, MO, 63110, USA
| | - Heather Schmidt
- Department of Genetics, Washington University School of Medicine, 660 South Euclid Ave, Campus Box 8232, Saint Louis, MO, 63110, USA
| | - Heather A Lawson
- Department of Genetics, Washington University School of Medicine, 660 South Euclid Ave, Campus Box 8232, Saint Louis, MO, 63110, USA.
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Choi KM, Ryan KK, Yoon JC. Adipose Mitochondrial Complex I Deficiency Modulates Inflammation and Glucose Homeostasis in a Sex-Dependent Manner. Endocrinology 2022; 163:6529386. [PMID: 35171275 PMCID: PMC8900697 DOI: 10.1210/endocr/bqac018] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/14/2021] [Indexed: 11/19/2022]
Abstract
Mitochondrial dysfunction in adipose tissue has been associated with type 2 diabetes, but it is unclear whether it is a cause or the consequence. Mitochondrial complex I is a major site of reactive oxygen species generation and a therapeutic target. Here we report that genetic deletion of the complex I subunit Ndufs4 specifically in adipose tissue results in an increased propensity to develop diet-induced weight gain, glucose intolerance, and elevated levels of fat inflammatory genes. This outcome is apparent in young males but not in young females, suggesting that females are relatively protected from the adverse consequences of adipose mitochondrial dysfunction for metabolic health. Mutant mice of both sexes exhibit defects in brown adipose tissue thermogenesis. Fibroblast growth factor 21 (FGF21) signaling in adipose tissue is selectively blunted in male mutant mice relative to wild-type littermates, consistent with sex-dependent regulation of its autocrine/paracrine action in adipocytes. Together, these findings support that adipocyte-specific mitochondrial dysfunction is sufficient to induce tissue inflammation and can cause systemic glucose abnormalities in male mice.
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Affiliation(s)
- Kyung-Mi Choi
- Division of Endocrinology, Department of Internal Medicine, University of California Davis School of Medicine, Davis, CA 95616, USA
| | - Karen K Ryan
- Department of Neurobiology, Physiology, and Behavior, College of Biological Sciences, University of California Davis, Davis, CA 95616, USA
| | - John C Yoon
- Division of Endocrinology, Department of Internal Medicine, University of California Davis School of Medicine, Davis, CA 95616, USA
- Correspondence: John C. Yoon, University of California Davis, One Shields Avenue, Davis, CA 95616, USA.
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Macias-Velasco JF, St Pierre CL, Wayhart JP, Yin L, Spears L, Miranda MA, Carson C, Funai K, Cheverud JM, Semenkovich CF, Lawson HA. Parent-of-origin effects propagate through networks to shape metabolic traits. eLife 2022; 11:e72989. [PMID: 35356864 PMCID: PMC9075957 DOI: 10.7554/elife.72989] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2021] [Accepted: 03/25/2022] [Indexed: 11/16/2022] Open
Abstract
Parent-of-origin effects are unexpectedly common in complex traits, including metabolic and neurological traits. Parent-of-origin effects can be modified by the environment, but the architecture of these gene-by-environmental effects on phenotypes remains to be unraveled. Previously, quantitative trait loci (QTL) showing context-specific parent-of-origin effects on metabolic traits were mapped in the F16 generation of an advanced intercross between LG/J and SM/J inbred mice. However, these QTL were not enriched for known imprinted genes, suggesting another mechanism is needed to explain these parent-of-origin effects phenomena. We propose that non-imprinted genes can generate complex parent-of-origin effects on metabolic traits through interactions with imprinted genes. Here, we employ data from mouse populations at different levels of intercrossing (F0, F1, F2, F16) of the LG/J and SM/J inbred mouse lines to test this hypothesis. Using multiple populations and incorporating genetic, genomic, and physiological data, we leverage orthogonal evidence to identify networks of genes through which parent-of-origin effects propagate. We identify a network comprised of three imprinted and six non-imprinted genes that show parent-of-origin effects. This epistatic network forms a nutritional responsive pathway and the genes comprising it jointly serve cellular functions associated with growth. We focus on two genes, Nnat and F2r, whose interaction associates with serum glucose levels across generations in high-fat-fed females. Single-cell RNAseq reveals that Nnat expression increases and F2r expression decreases in pre-adipocytes along an adipogenic trajectory, a result that is consistent with our observations in bulk white adipose tissue.
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Affiliation(s)
- Juan F Macias-Velasco
- Department of Genetics, Washington University School of MedicineSaint LouisUnited States
| | - Celine L St Pierre
- Department of Genetics, Washington University School of MedicineSaint LouisUnited States
| | - Jessica P Wayhart
- Department of Genetics, Washington University School of MedicineSaint LouisUnited States
| | - Li Yin
- Department of Medicine, Washington University School of MedicineSaint LouisUnited States
| | - Larry Spears
- Department of Medicine, Washington University School of MedicineSaint LouisUnited States
| | - Mario A Miranda
- Department of Genetics, Washington University School of MedicineSaint LouisUnited States
| | - Caryn Carson
- Department of Genetics, Washington University School of MedicineSaint LouisUnited States
| | - Katsuhiko Funai
- Diabetes and Metabolism Research Center, University of UtahSalt Lake CityUnited States
| | | | - Clay F Semenkovich
- Department of Medicine, Washington University School of MedicineSaint LouisUnited States
| | - Heather A Lawson
- Department of Genetics, Washington University School of MedicineSaint LouisUnited States
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Yuko OO, Saito M. Brown Fat as a Regulator of Systemic Metabolism beyond Thermogenesis. Diabetes Metab J 2021; 45:840-852. [PMID: 34176254 PMCID: PMC8640153 DOI: 10.4093/dmj.2020.0291] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/08/2020] [Accepted: 01/26/2021] [Indexed: 12/01/2022] Open
Abstract
Brown adipose tissue (BAT) is a specialized tissue for nonshivering thermogenesis to dissipate energy as heat. Although BAT research has long been limited mostly in small rodents, the rediscovery of metabolically active BAT in adult humans has dramatically promoted the translational studies on BAT in health and diseases. Moreover, several remarkable advancements have been made in brown fat biology over the past decade: The molecular and functional analyses of inducible thermogenic adipocytes (socalled beige adipocytes) arising from a developmentally different lineage from classical brown adipocytes have been accelerated. In addition to a well-established thermogenic activity of uncoupling protein 1 (UCP1), several alternative thermogenic mechanisms have been discovered, particularly in beige adipocytes. It has become clear that BAT influences other peripheral tissues and controls their functions and systemic homeostasis of energy and metabolic substrates, suggesting BAT as a metabolic regulator, other than for thermogenesis. This notion is supported by discovering that various paracrine and endocrine factors are secreted from BAT. We review the current understanding of BAT pathophysiology, particularly focusing on its role as a metabolic regulator in small rodents and also in humans.
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Affiliation(s)
| | - Masayuki Saito
- Faculty of Veterinary Medicine, Hokkaido University, Sapporo, Japan
- Department of Nutrition, Tenshi College, Sapporo, Japan
- Corresponding author: Masayuki Saito https://orcid.org/0000-0002-3058-3003 Faculty of Veterinary Medicine, Hokkaido University, Sapporo 060-0818, Japan E-mail:
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