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Gu J, Jin J, Ren X, Zhang X, Li J, Wang X, Zhang S, Yin X, Zhang Q, Wang Z. Single-Cell Landscape and a Macrophage Subset Enhancing Brown Adipocyte Function in Diabetes. Diabetes Metab J 2024; 48:885-900. [PMID: 38853519 PMCID: PMC11449828 DOI: 10.4093/dmj.2023.0278] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/16/2023] [Accepted: 02/07/2024] [Indexed: 06/11/2024] Open
Abstract
BACKGRUOUND Metabolic dysregulation is a hallmark of type 2 diabetes mellitus (T2DM), in which the abnormalities in brown adipose tissue (BAT) play important roles. However, the cellular composition and function of BAT as well as its pathological significance in diabetes remain incompletely understood. Our objective is to delineate the single-cell landscape of BAT-derived stromal vascular fraction (SVF) and their characteristic alterations in T2DM rats. METHODS T2DM was induced in rats by intraperitoneal injection of low-dose streptozotocin and high-fat diet feeding. Single-cell mRNA sequencing was then performed on BAT samples and compared to normal rats to characterize changes in T2DM rats. Subsequently, the importance of key cell subsets in T2DM was elucidated using various functional studies. RESULTS Almost all cell types in the BAT-derived SVF of T2DM rats exhibited enhanced inflammatory responses, increased angiogenesis, and disordered glucose and lipid metabolism. The multidirectional differentiation potential of adipose tissue-derived stem cells was also reduced. Moreover, macrophages played a pivotal role in intercellular crosstalk of BAT-derived SVF. A novel Rarres2+macrophage subset promoted the differentiation and metabolic function of brown adipocytes via adipose-immune crosstalk. CONCLUSION BAT SVF exhibited strong heterogeneity in cellular composition and function and contributed to T2DM as a significant inflammation source, in which a novel macrophage subset was identified that can promote brown adipocyte function.
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Affiliation(s)
- Junfei Gu
- Department of Endocrinology & Geriatrics, Shandong Provincial Hospital, Shandong University, Jinan, China
- Department of Geriatrics, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, China
- Department of Endocrinology, The Second Affiliated Hospital of Wannan Medical College, Wuhu, China
| | - Jiajia Jin
- National Key Laboratory for Innovation and Transformation of Luobing Theory, Shandong University, Jinan, China
- Key Laboratory of Cardiovascular Remodeling and Function Research, Chinese Ministry of Education, Chinese National Health Commission, Shandong University, Jinan, China
- Department of Cardiology, Qilu Hospital of Shandong University, Jinan, China
| | - Xiaoyu Ren
- National Key Laboratory for Innovation and Transformation of Luobing Theory, Shandong University, Jinan, China
- Key Laboratory of Cardiovascular Remodeling and Function Research, Chinese Ministry of Education, Chinese National Health Commission, Shandong University, Jinan, China
- Department of Cardiology, Qilu Hospital of Shandong University, Jinan, China
| | - Xinjie Zhang
- Department of Biology, University College London, London, UK
| | - Jiaxuan Li
- Department of Endocrinology & Geriatrics, Shandong Provincial Hospital, Shandong University, Jinan, China
- Department of Geriatrics, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, China
- National Key Laboratory for Innovation and Transformation of Luobing Theory, Shandong University, Jinan, China
- Key Laboratory of Cardiovascular Remodeling and Function Research, Chinese Ministry of Education, Chinese National Health Commission, Shandong University, Jinan, China
- Department of Cardiology, Qilu Hospital of Shandong University, Jinan, China
| | - Xiaowei Wang
- National Key Laboratory for Innovation and Transformation of Luobing Theory, Shandong University, Jinan, China
- Key Laboratory of Cardiovascular Remodeling and Function Research, Chinese Ministry of Education, Chinese National Health Commission, Shandong University, Jinan, China
- Department of Cardiology, Qilu Hospital of Shandong University, Jinan, China
| | - Shucui Zhang
- National Key Laboratory for Innovation and Transformation of Luobing Theory, Shandong University, Jinan, China
- Key Laboratory of Cardiovascular Remodeling and Function Research, Chinese Ministry of Education, Chinese National Health Commission, Shandong University, Jinan, China
- Department of Cardiology, Qilu Hospital of Shandong University, Jinan, China
| | - Xianlun Yin
- National Key Laboratory for Innovation and Transformation of Luobing Theory, Shandong University, Jinan, China
- Key Laboratory of Cardiovascular Remodeling and Function Research, Chinese Ministry of Education, Chinese National Health Commission, Shandong University, Jinan, China
- Department of Cardiology, Qilu Hospital of Shandong University, Jinan, China
| | - Qunye Zhang
- National Key Laboratory for Innovation and Transformation of Luobing Theory, Shandong University, Jinan, China
- Key Laboratory of Cardiovascular Remodeling and Function Research, Chinese Ministry of Education, Chinese National Health Commission, Shandong University, Jinan, China
- Department of Cardiology, Qilu Hospital of Shandong University, Jinan, China
| | - Zhe Wang
- Department of Endocrinology & Geriatrics, Shandong Provincial Hospital, Shandong University, Jinan, China
- Department of Geriatrics, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, China
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States JC, Barchowsky A. Invited Perspective: Humanized Mice for Arsenic Metabolism-A Better Model for Investigating Arsenic-Induced Diseases? ENVIRONMENTAL HEALTH PERSPECTIVES 2023; 131:121308. [PMID: 38150314 PMCID: PMC10752413 DOI: 10.1289/ehp13932] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/04/2023] [Revised: 10/12/2023] [Accepted: 12/04/2023] [Indexed: 12/29/2023]
Affiliation(s)
- J. Christopher States
- Department of Pharmacology and Toxicology, Center for Integrative Environmental Health Sciences, University of Louisville, Louisville, Kentucky, USA
| | - Aaron Barchowsky
- Department of Environmental and Occupational Health, University of Pittsburgh, Pittsburgh, Pennsylvania, USA
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