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Wang H, Guo H, Zhu K, He L, Yang JJ. Hairless (Hr) Deficiency Mitigates High-Fat Diet-Induced Obesity and Insulin Resistance in Mice. Adv Biol (Weinh) 2024; 8:e2300635. [PMID: 38655702 DOI: 10.1002/adbi.202300635] [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: 11/21/2023] [Revised: 04/10/2024] [Indexed: 04/26/2024]
Abstract
Obesity is a significant global health concern linked to excessive dietary energy intake. This research focuses on the mammalian hairless protein (HR), known for its role in skin and hair function, and its impact on metabolism. Examining male wild-type (Hr+/+) and Hr null (Hr-/-) mice over a 14-week normal chow diet (NCD) or high-fat diet (HFD) intervention. This study reveals that HR deficiency exhibited a protective effect against HFD-induced obesity and insulin resistance. This protective effect is attributed to increased energy expenditure in Hr-/- mice. Moreover, the brown adipose tissue (BAT) of Hr-/- mice displays elevated levels of the thermogenic protein, uncoupling protein 1 (Ucp1), and its key transcriptional regulators (PPARγ and PGC1α), compared to Hr+/+ mice. In summary, the findings underscore the protective role of HR deficiency in countering HFD-induced adiposity by enhancing insulin sensitivity, raising energy expenditure, and augmenting thermogenic factors in BAT. Further exploration of HR metabolic regulation holds promise for potential therapeutic targets in addressing obesity-related metabolic disorders.
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Affiliation(s)
- Hongwei Wang
- Department of Anesthesiology, Pain and Perioperative Medicine, the First Affiliated Hospital of Zhengzhou University, Zhengzhou, 450000, China
| | - Haoyu Guo
- Department of Anesthesiology, Pain and Perioperative Medicine, the First Affiliated Hospital of Zhengzhou University, Zhengzhou, 450000, China
| | - Kuicheng Zhu
- Department of Laboratory Animal Resources, Academy of Medical Sciences, Zhengzhou University, Zhengzhou, 450000, China
| | - Long He
- Department of Anesthesiology, Pain and Perioperative Medicine, the First Affiliated Hospital of Zhengzhou University, Zhengzhou, 450000, China
| | - Jian-Jun Yang
- Department of Anesthesiology, Pain and Perioperative Medicine, the First Affiliated Hospital of Zhengzhou University, Zhengzhou, 450000, China
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Ma Y, Kan C, Qiu H, Liu Y, Hou N, Han F, Shi J, Sun X. Transcriptomic Analysis Reveals the Protective Effects of Empagliflozin on Lipid Metabolism in Nonalcoholic Fatty Liver Disease. Front Pharmacol 2021; 12:793586. [PMID: 34992540 PMCID: PMC8724565 DOI: 10.3389/fphar.2021.793586] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2021] [Accepted: 12/06/2021] [Indexed: 02/05/2023] Open
Abstract
Empagliflozin is a novel type of sodium-glucose cotransporter two inhibitor with diverse beneficial effects in the treatment of nonalcoholic fatty liver disease (NAFLD). Although empagliflozin impacts NAFLD by regulating lipid metabolism, the underlying mechanism has not been fully elucidated. In this study, we investigated transcriptional regulation pathways affected by empagliflozin in a mouse model of NAFLD. In this study, NAFLD was established in male C57BL/6J mice by administration of a high-fat diet; it was then treated with empagliflozin and whole transcriptome analysis was conducted. Gene expression levels detected by transcriptome analysis were then verified by quantitative real-time polymerase chain reaction, protein levels detected by Western Blot. Differential expression genes screened from RNA-Seq data were enriched in lipid metabolism and synthesis. The Gene Set Enrichment Analysis (GSEA) results showed decreased lipid synthesis and improved lipid metabolism. Empagliflozin improved NAFLD through enhanced triglyceride transfer, triglyceride lipolysis and microsomal mitochondrial β-oxidation. This study provides new insights concerning the mechanisms by which sodium-glucose cotransporter two inhibitors impact NAFLD, particularly in terms of liver lipid metabolism. The lipid metabolism-related genes identified in this experiment provide robust evidence for further analyses of the mechanism by which empagliflozin impacts NAFLD.
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Affiliation(s)
- Yuting Ma
- Department of Endocrinology and Metabolism, Affiliated Hospital of Weifang Medical University, Weifang, China
- Branch of Shandong Provincial Clinical Research Center for Diabetes and Metabolic Diseases, Weifang, China
- Clinical Research Center, Affiliated Hospital of Weifang Medical University, Weifang, China
| | - Chengxia Kan
- Department of Endocrinology and Metabolism, Affiliated Hospital of Weifang Medical University, Weifang, China
- Branch of Shandong Provincial Clinical Research Center for Diabetes and Metabolic Diseases, Weifang, China
- Clinical Research Center, Affiliated Hospital of Weifang Medical University, Weifang, China
| | - Hongyan Qiu
- Department of Endocrinology and Metabolism, Affiliated Hospital of Weifang Medical University, Weifang, China
- Branch of Shandong Provincial Clinical Research Center for Diabetes and Metabolic Diseases, Weifang, China
- Clinical Research Center, Affiliated Hospital of Weifang Medical University, Weifang, China
| | - Yongping Liu
- Department of Endocrinology and Metabolism, Affiliated Hospital of Weifang Medical University, Weifang, China
- Branch of Shandong Provincial Clinical Research Center for Diabetes and Metabolic Diseases, Weifang, China
- Clinical Research Center, Affiliated Hospital of Weifang Medical University, Weifang, China
| | - Ningning Hou
- Department of Endocrinology and Metabolism, Affiliated Hospital of Weifang Medical University, Weifang, China
- Branch of Shandong Provincial Clinical Research Center for Diabetes and Metabolic Diseases, Weifang, China
| | - Fang Han
- Department of Pathology, Affiliated Hospital of Weifang Medical University, Weifang, China
| | - Junfeng Shi
- Department of Endocrinology and Metabolism, Affiliated Hospital of Weifang Medical University, Weifang, China
- Branch of Shandong Provincial Clinical Research Center for Diabetes and Metabolic Diseases, Weifang, China
- Clinical Research Center, Affiliated Hospital of Weifang Medical University, Weifang, China
- *Correspondence: Junfeng Shi, ; Xiaodong Sun,
| | - Xiaodong Sun
- Department of Endocrinology and Metabolism, Affiliated Hospital of Weifang Medical University, Weifang, China
- Branch of Shandong Provincial Clinical Research Center for Diabetes and Metabolic Diseases, Weifang, China
- Clinical Research Center, Affiliated Hospital of Weifang Medical University, Weifang, China
- *Correspondence: Junfeng Shi, ; Xiaodong Sun,
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Buerger F, Müller S, Ney N, Weiner J, Heiker JT, Kallendrusch S, Kovacs P, Schleinitz D, Thiery J, Stadler SC, Burkhardt R. Depletion of Jmjd1c impairs adipogenesis in murine 3T3-L1 cells. Biochim Biophys Acta Mol Basis Dis 2017; 1863:1709-1717. [DOI: 10.1016/j.bbadis.2017.05.011] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2016] [Revised: 05/03/2017] [Accepted: 05/09/2017] [Indexed: 02/07/2023]
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Konger RL, Derr-Yellin E, Hojati D, Lutz C, Sundberg JP. Comparison of the acute ultraviolet photoresponse in congenic albino hairless C57BL/6J mice relative to outbred SKH1 hairless mice. Exp Dermatol 2016; 25:688-93. [PMID: 27095432 DOI: 10.1111/exd.13034] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/14/2016] [Indexed: 12/25/2022]
Abstract
Hairless albino Crl:SKH1-Hr(hr) mice are commonly utilized for studies in which hair or pigmentation would introduce an impediment to observational studies. Being an outbred strain, the SKH1 model suffers from key limitations that are not seen with congenic mouse strains. Inbred and congenic C57BL/6J mice are commonly utilized for modified genetic mouse models. We compare the acute UV-induced photoresponse between outbred SKH1 mice and an immune competent, hairless, albino C57BL/6J congenic mouse line [B6.Cg-Tyr(c-2J) Hr(hr) /J]. Histologically, B6.Cg-Tyr(c-2J) Hr(hr) /J skin is indistinguishable from that of SKH1 mice. The skin of both SKH1 and B6.Cg-Tyr(c-2J) Hr(hr) /J mice exhibited a reduction in hypodermal adipose tissue, the presence of utricles and dermal cystic structures, the presence of dermal granulomas and epidermal thickening. In response to a single 1500 J/m(2) ultraviolet B dose, the oedema and apoptotic responses were equivalent in both mouse strains. However, B6.Cg-Tyr(c-2J) Hr(hr) /J mice exhibited a more robust delayed sunburn reaction, with an increase in epidermal erosion, scab formation and myeloperoxidase activity relative to SKH1 mice. Compared with SKH1 mice, B6.Cg-Tyr(c-2J) Hr(hr) /J also exhibited an aberrant proliferative response to this single UV exposure. Epidermal Ki67 immunopositivity was significantly suppressed in B6.Cg-Tyr(c-2J) Hr(hr) /J mice at 24 h post-UV. A smaller non-significant reduction in Ki67 labelling was observed in SKH1 mice. Finally, at 72 h post-UV, SKH1 mice, but not B6.Cg-Tyr(c-2J) Hr(hr) /J mice, exhibited a significant increase in Ki67 immunolabelling relative to non-irradiated controls. Thus, B6.Cg-Tyr(c-2J) Hr(hr) /J mice are suitable for photobiology experiments.
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Affiliation(s)
- Raymond L Konger
- Department of Pathology & Laboratory Medicine, Indiana University School of Medicine, Indianapolis, IN, USA.,Department of Dermatology, Indiana University School of Medicine, Indianapolis, IN, USA
| | - Ethel Derr-Yellin
- Department of Pathology & Laboratory Medicine, Indiana University School of Medicine, Indianapolis, IN, USA
| | - Delaram Hojati
- Department of Pathology & Laboratory Medicine, Indiana University School of Medicine, Indianapolis, IN, USA
| | - Cathleen Lutz
- Rare and Orphan Disease Center, Department of Genetic Resources Sciences, The Jackson Laboratory, Bar Harbor, ME, USA
| | - John P Sundberg
- Research and Development, The Jackson Laboratory, Bar Harbor, ME, USA
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Huang PY, Balmain A. Modeling cutaneous squamous carcinoma development in the mouse. Cold Spring Harb Perspect Med 2014; 4:a013623. [PMID: 25183851 DOI: 10.1101/cshperspect.a013623] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Abstract
Cutaneous squamous cell carcinoma (SCC) is one of the most common cancers in Caucasian populations and is associated with a significant risk of morbidity and mortality. The classic mouse model for studying SCC involves two-stage chemical carcinogenesis, which has been instrumental in the evolution of the concept of multistage carcinogenesis, as widely applied to both human and mouse cancers. Much is now known about the sequence of biological and genetic events that occur in this skin carcinogenesis model and the factors that can influence the course of tumor development, such as perturbations in the oncogene/tumor-suppressor signaling pathways involved, the nature of the target cell that acquires the first genetic hit, and the role of inflammation. Increasingly, studies of tumor-initiating cells, malignant progression, and metastasis in mouse skin cancer models will have the potential to inform future approaches to treatment and chemoprevention of human squamous malignancies.
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Affiliation(s)
- Phillips Y Huang
- Helen Diller Family Comprehensive Cancer Center, University of California San Francisco, San Francisco, California 94158
| | - Allan Balmain
- Helen Diller Family Comprehensive Cancer Center, University of California San Francisco, San Francisco, California 94158
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