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Porro G, Sarkis R, Obergozo C, Godot L, Amato F, Humbert M, Naveiras O, Guiducci C. MarrowCellDLD: a microfluidic method for label-free retrieval of fragile bone marrow-derived cells. Sci Rep 2023; 13:22462. [PMID: 38105340 PMCID: PMC10725893 DOI: 10.1038/s41598-023-47978-w] [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: 08/25/2023] [Accepted: 11/20/2023] [Indexed: 12/19/2023] Open
Abstract
Functional bone marrow studies have focused primarily on hematopoietic progenitors, leaving limited knowledge about other fragile populations, such as bone marrow adipocytes (BMAds) and megakaryocytes. The isolation of these cells is challenging due to rupture susceptibility and large size. We introduce here a label-free cytometry microsystem, MarrowCellDLD, based on deterministic lateral displacement. MarrowCellDLD enables the isolation of large, fragile BM-derived cells based on intrinsic size properties while preserving their viability and functionality. Bone marrow adipocytes, obtained from mouse and human stromal line differentiation, as well as megakaryocytes, from primary human CD34+ hematopoietic stem and progenitor cells, were used for validation. Precise micrometer-range separation cutoffs were adapted for each cell type. Cells were sorted directly in culture media, without pre-labeling steps, and with real-time imaging for quality control. At least 106 cells were retrieved intact per sorting round. Our method outperformed two FACS instruments in purity and yield, particularly for large cell size fractions. MarrowCellDLD represents a non-destructive sorting tool for large, fragile BM-derived cells, facilitating the separation of pure populations of BMAds and megakaryocytes to further investigate their physiological and pathological roles.
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Affiliation(s)
- Gloria Porro
- Laboratory of Life Sciences Electronics, École Polytechnique Fédérale de Lausanne (EPFL), Lausanne, Switzerland.
| | - Rita Sarkis
- Laboratory of Regenerative Hematopoiesis, Université de Lausanne (UNIL), Lausanne, Switzerland.
| | - Clara Obergozo
- Laboratory of Life Sciences Electronics, École Polytechnique Fédérale de Lausanne (EPFL), Lausanne, Switzerland
- Laboratory of Regenerative Hematopoiesis, Université de Lausanne (UNIL), Lausanne, Switzerland
| | - Lucie Godot
- Laboratory of Life Sciences Electronics, École Polytechnique Fédérale de Lausanne (EPFL), Lausanne, Switzerland
- Laboratory of Regenerative Hematopoiesis, Université de Lausanne (UNIL), Lausanne, Switzerland
| | - Francesco Amato
- Laboratory of Life Sciences Electronics, École Polytechnique Fédérale de Lausanne (EPFL), Lausanne, Switzerland
- Laboratory of Regenerative Hematopoiesis, Université de Lausanne (UNIL), Lausanne, Switzerland
| | - Magali Humbert
- Laboratory of Regenerative Hematopoiesis, Université de Lausanne (UNIL), Lausanne, Switzerland
| | - Olaia Naveiras
- Laboratory of Regenerative Hematopoiesis, Université de Lausanne (UNIL), Lausanne, Switzerland.
- Hematology Service, Departments of Oncology and Laboratory Medicine, Lausanne University Hospital (CHUV), Lausanne, Switzerland.
| | - Carlotta Guiducci
- Laboratory of Life Sciences Electronics, École Polytechnique Fédérale de Lausanne (EPFL), Lausanne, Switzerland.
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2
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Sheptulina AF, Antyukh KY, Kiselev AR, Mitkovskaya NP, Drapkina OM. Possible Mechanisms Linking Obesity, Steroidogenesis, and Skeletal Muscle Dysfunction. Life (Basel) 2023; 13:1415. [PMID: 37374197 DOI: 10.3390/life13061415] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2023] [Revised: 06/12/2023] [Accepted: 06/16/2023] [Indexed: 06/29/2023] Open
Abstract
Increasing evidence suggests that skeletal muscles may play a role in the pathogenesis of obesity and associated conditions due to their impact on insulin resistance and systemic inflammation. Skeletal muscles, as well as adipose tissue, are largely recognized as endocrine organs, producing biologically active substances, such as myokines and adipokines. They may have either beneficial or harmful effects on the organism and its functions, acting through the endocrine, paracrine, and autocrine pathways. Moreover, the collocation of adipose tissue and skeletal muscles, i.e., the amount of intramuscular, intermuscular, and visceral adipose depots, may be of major importance for metabolic health. Traditionally, the generalized and progressive loss of skeletal muscle mass and strength or physical function, named sarcopenia, has been thought to be associated with age. That is why most recently published papers are focused on the investigation of the effect of obesity on skeletal muscle function in older adults. However, accumulated data indicate that sarcopenia may arise in individuals with obesity at any age, so it seems important to clarify the possible mechanisms linking obesity and skeletal muscle dysfunction regardless of age. Since steroids, namely, glucocorticoids (GCs) and sex steroids, have a major impact on the amount and function of both adipose tissue and skeletal muscles, and are involved in the pathogenesis of obesity, in this review, we will also discuss the role of steroids in the interaction of these two metabolically active tissues in the course of obesity.
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Affiliation(s)
- Anna F Sheptulina
- Department of Fundamental and Applied Aspects of Obesity, National Medical Research Center for Therapy and Preventive Medicine, 101990 Moscow, Russia
- Department of Therapy and Preventive Medicine, A.I. Evdokimov Moscow State University of Medicine and Dentistry, 127473 Moscow, Russia
| | - Karina Yu Antyukh
- Republican Scientific and Practical Center of Cardiology, 220036 Minsk, Belarus
| | - Anton R Kiselev
- National Medical Research Center for Therapy and Preventive Medicine, 101990 Moscow, Russia
| | - Natalia P Mitkovskaya
- Republican Scientific and Practical Center of Cardiology, 220036 Minsk, Belarus
- Department of Cardiology and Internal Diseases, Belarusian State Medical University, 220116 Minsk, Belarus
| | - Oxana M Drapkina
- Department of Fundamental and Applied Aspects of Obesity, National Medical Research Center for Therapy and Preventive Medicine, 101990 Moscow, Russia
- Department of Therapy and Preventive Medicine, A.I. Evdokimov Moscow State University of Medicine and Dentistry, 127473 Moscow, Russia
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3
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Goodpaster BH, Bergman BC, Brennan AM, Sparks LM. Intermuscular adipose tissue in metabolic disease. Nat Rev Endocrinol 2022; 19:285-298. [PMID: 36564490 DOI: 10.1038/s41574-022-00784-2] [Citation(s) in RCA: 24] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 11/21/2022] [Indexed: 12/24/2022]
Abstract
Intermuscular adipose tissue (IMAT) is a distinct adipose depot described in early reports as a 'fatty replacement' or 'muscle fat infiltration' that was linked to ageing and neuromuscular disease. Later studies quantifying IMAT with modern in vivo imaging methods (computed tomography and magnetic resonance imaging) revealed that IMAT is proportionately higher in men and women with type 2 diabetes mellitus and the metabolic syndrome than in people without these conditions and is associated with insulin resistance and poor physical function with ageing. In parallel, agricultural research has provided extensive insight into the role of IMAT and other muscle lipids in muscle (that is, meat) quality. In addition, studies using rodent models have shown that IMAT is a bona fide white adipose tissue depot capable of robust triglyceride storage and turnover. Insight into the importance of IMAT in human biology has been limited by the dearth of studies on its biological properties, that is, the quality of IMAT. However, in the past few years, investigations have begun to determine that IMAT has molecular and metabolic features that distinguish it from other adipose tissue depots. These studies will be critical to further decipher the role of IMAT in health and disease and to better understand its potential as a therapeutic target.
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Affiliation(s)
| | - Bryan C Bergman
- Division of Endocrinology, Diabetes, and Metabolism, University of Colorado Anschutz Medical Campus, Aurora, CO, USA
| | - Andrea M Brennan
- Translational Research Institute, AdventHealth, Orlando, FL, USA
| | - Lauren M Sparks
- Translational Research Institute, AdventHealth, Orlando, FL, USA
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4
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Gavin KM, Sullivan TM, Maltzahn JK, Jackman MR, Libby AE, MacLean PS, Kohrt WM, Majka SM, Klemm DJ. Hematopoietic Stem Cell-Derived Adipocytes Modulate Adipose Tissue Cellularity, Leptin Production and Insulin Responsiveness in Female Mice. Front Endocrinol (Lausanne) 2022; 13:844877. [PMID: 35721743 PMCID: PMC9203959 DOI: 10.3389/fendo.2022.844877] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/28/2021] [Accepted: 04/07/2022] [Indexed: 11/13/2022] Open
Abstract
A subpopulation of adipocytes in the major adipose depots of mice is produced from hematopoietic stem cells rather than mesenchymal progenitors that are the source of conventional white and brown/beige adipocytes. To analyze the impact of hematopoietic stem cell-derived adipocytes (HSCDAs) in the adipose niche we transplanted HSCs in which expression of a diphtheria toxin gene was under the control of the adipocyte-specific adiponectin gene promoter into irradiated wild type recipients. Thus, only adipocytes produced from HSC would be ablated while conventional white and brown adipocytes produced from mesenchymal progenitor cells would be spared. Wild type mice transplanted with HSCs from mice containing a reporter gene, but not the diphtheria toxin gene, regulated by the adiponectin gene promoter served as controls. In mice in which HSCDA production was suppressed, adipocyte size declined while adipose depot weights were unchanged and the number of conventional adipocyte progenitors significantly increased. We also measured a paradoxical increase in circulating leptin levels while physical activity was significantly decreased in the HSCDA depleted mice. Finally, insulin sensitivity was significantly reduced in HSCDA depleted mice. In contrast, loss of HSCDA production had no effect on body weight, components of energy balance, or levels of several circulating adipokines and tissue-resident inflammatory cells. These data indicate that ablation of this low-abundance subpopulation of adipocytes is associated with changes in circulating leptin levels and leptin-regulated endpoints associated with adipose tissue function. How they do so remains a mystery, but our results highlight the need for additional studies to explore the role of HSCDAs in other physiologic contexts such as obesity, metabolic dysfunction or loss of sex hormone production.
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Affiliation(s)
- Kathleen M. Gavin
- Geriatric Research, Education and Clinical Center, Rocky Mountain Regional Veterans Administration (VA) Medical Center, Aurora, CO, United States
- Division of Geriatric Medicine, Department of Medicine, University of Colorado Anschutz Medical Campus, Aurora, CO, United States
| | - Timothy M. Sullivan
- Cardiovascular Pulmonary Research Laboratory, University of Colorado Anschutz Medical Campus, Aurora, CO, United States
| | - Joanne K. Maltzahn
- Cardiovascular Pulmonary Research Laboratory, University of Colorado Anschutz Medical Campus, Aurora, CO, United States
| | - Matthew R. Jackman
- Division of Endocrinology, Department of Medicine, University of Colorado Anschutz Medical Campus, Aurora, CO, United States
| | - Andrew E. Libby
- Division of Endocrinology, Department of Medicine, University of Colorado Anschutz Medical Campus, Aurora, CO, United States
| | - Paul S. MacLean
- Division of Endocrinology, Department of Medicine, University of Colorado Anschutz Medical Campus, Aurora, CO, United States
| | - Wendy M. Kohrt
- Geriatric Research, Education and Clinical Center, Rocky Mountain Regional Veterans Administration (VA) Medical Center, Aurora, CO, United States
- Division of Geriatric Medicine, Department of Medicine, University of Colorado Anschutz Medical Campus, Aurora, CO, United States
| | - Susan M. Majka
- Division of Pulmonary, Critical Care and Sleep Medicine, Department of Biomedical Research, National Jewish Health, Denver, CO, United States
- Charles C. Gates Center for Regenerative Medicine and Stem Cell Biology, University of Colorado Anschutz Medical Campus, Aurora, CO, United States
| | - Dwight J. Klemm
- Geriatric Research, Education and Clinical Center, Rocky Mountain Regional Veterans Administration (VA) Medical Center, Aurora, CO, United States
- Cardiovascular Pulmonary Research Laboratory, University of Colorado Anschutz Medical Campus, Aurora, CO, United States
- Charles C. Gates Center for Regenerative Medicine and Stem Cell Biology, University of Colorado Anschutz Medical Campus, Aurora, CO, United States
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5
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Gavin KM, Sullivan TM, Maltzahn JK, Rahkola JT, Acosta AS, Kohrt WM, Majka SM, Klemm DJ. Hematopoietic stem cells produce intermediate lineage adipocyte progenitors that simultaneously express both myeloid and mesenchymal lineage markers in adipose tissue. Adipocyte 2021; 10:394-407. [PMID: 34404315 PMCID: PMC8381847 DOI: 10.1080/21623945.2021.1957290] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
Some adipocytes are produced from bone marrow hematopoietic stem cells. In vitro studies previously indicated that these bone marrow-derived adipocytes (BMDAs) were generated from adipose tissue macrophage (ATM) that lose their hematopoietic markers and acquire mesenchymal markers prior to terminal adipogenic differentiation. Here we interrogated whether this hematopoietic-to-mesenchymal transition drives BMDA production In vitro. We generated transgenic mice in which the lysozyme gene promoter (LysM) indelibly labeled ATM with green fluorescent protein (GFP). We discovered that adipose stroma contained a population of LysM-positive myeloid cells that simultaneously expressed hematopoietic/myeloid markers (CD45 and CD11b), and mesenchymal markers (CD29, PDGFRa and Sca-1) typically found on conventional adipocyte progenitors. These cells were capable of adipogenic differentiation In vitro and In vitro, while other stromal populations deficient in PDGFRa and Sca-1 were non-adipogenic. BMDAs and conventional adipocytes expressed common fat cell markers but exhibited little or no expression of hematopoietic and mesenchymal progenitor cell markers. The data indicate that BMDAs are produced from ATM simultaneously expressing hematopoietic and mesenchymal markers rather than via a stepwise hematopoietic-to-mesenchymal transition. Because BMDA production is stimulated by high fat feeding, their production from hematopoietic progenitors may maintain adipocyte production when conventional adipocyte precursors are diminished.
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Affiliation(s)
- Kathleen M. Gavin
- Eastern Colorado Veterans Administration Geriatric Research, Education and Clinical Center (GRECC), Rocky Mountain Regional VA Medical Center, Aurora, CO, USA
- Division of Geriatric Medicine, Department of Medicine, University of Colorado Anschutz Medical Campus, Aurora, CO, USA
| | - Timothy M. Sullivan
- Eastern Colorado Veterans Administration Geriatric Research, Education and Clinical Center (GRECC), Rocky Mountain Regional VA Medical Center, Aurora, CO, USA
- Cardiovascular Pulmonary Research Laboratory, University of Colorado Anschutz Medical Campus, Aurora, CO, USA
| | - Joanne K. Maltzahn
- Eastern Colorado Veterans Administration Geriatric Research, Education and Clinical Center (GRECC), Rocky Mountain Regional VA Medical Center, Aurora, CO, USA
- Cardiovascular Pulmonary Research Laboratory, University of Colorado Anschutz Medical Campus, Aurora, CO, USA
| | - Jeremy T. Rahkola
- Division of Pulmonary Sciences and Critical Care Medicine, Department of Medicine, University of Colorado Anschutz Medical Campus, Rocky Mountain Regional VA Medical Center, Aurora, CO, USA
| | - Alistair S. Acosta
- Flow Cytometry Shared Resource, University of Colorado Cancer Center, University of Colorado Anschutz Medical Campus, Aurora, CO, USA
| | - Wendy M. Kohrt
- Eastern Colorado Veterans Administration Geriatric Research, Education and Clinical Center (GRECC), Rocky Mountain Regional VA Medical Center, Aurora, CO, USA
- Division of Geriatric Medicine, Department of Medicine, University of Colorado Anschutz Medical Campus, Aurora, CO, USA
| | - Susan M. Majka
- Cardiovascular Pulmonary Research Laboratory, University of Colorado Anschutz Medical Campus, Aurora, CO, USA
- Division of Pulmonary, Critical Care and Sleep Medicine, Department of Biomedical Research, National Jewish Health, Denver, CO, USA
- Charles C. Gates Center for Regenerative Medicine and Stem Cell Biology, University of Colorado Anschutz Medical Campus, Aurora, CO, USA
| | - Dwight J. Klemm
- Eastern Colorado Veterans Administration Geriatric Research, Education and Clinical Center (GRECC), Rocky Mountain Regional VA Medical Center, Aurora, CO, USA
- Cardiovascular Pulmonary Research Laboratory, University of Colorado Anschutz Medical Campus, Aurora, CO, USA
- Charles C. Gates Center for Regenerative Medicine and Stem Cell Biology, University of Colorado Anschutz Medical Campus, Aurora, CO, USA
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6
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Robino JJ, Kim Y, Varlamov O. Single-Cell Sorting of Non-human Primate Adipocytes with Large-particle Flow Cytometry. Curr Protoc 2021; 1:e271. [PMID: 34735045 DOI: 10.1002/cpz1.271] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
Fluorescence-activated cell sorting enables separation and analysis of heterogeneous cell populations based on size, granularity, and fluorescence intensity. Cell sorting has been widely used for isolation of cells that are ∼10 to 25 μm in diameter. By contrast, cell sorting of unilocular adipocytes isolated from white adipose tissue imposes a significant technological challenge. The combination of their large size (up to 200 μm) and the fragile nature of lipid-laden adipocytes requires the use of specialized flow cytometers equipped with a large nozzle and capable of using low pressure to reduce shear forces during the cell sorting process. Furthermore, isolation of single adipocytes is rarely performed due to the lack of specialized cell sorters that can dispense single adipocytes into individual wells. Conducting cell sorting on single adipocytes would enable analyses of the cell-autonomous heterogeneity in nutrient uptake and metabolism observed in white adipose tissue. In this protocol, we describe single-cell sorting of rhesus macaque adipocytes labeled with fluorescent fatty acid and live-cell indicators using large-particle flow cytometry. This methodology represents a valuable resource for basic and translational studies aimed at understanding the development and function of adipocytes. © 2021 Wiley Periodicals LLC. Basic Protocol: Single-cell flow sorting of adipocytes.
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Affiliation(s)
- Jacob J Robino
- Division of Cardiometabolic Health, Oregon National Primate Research Center, Oregon Health & Science University, Beaverton, Oregon
| | - Yongwoon Kim
- Union Biometrica, Inc., Holliston, Massachusetts
| | - Oleg Varlamov
- Division of Cardiometabolic Health, Oregon National Primate Research Center, Oregon Health & Science University, Beaverton, Oregon
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7
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Scalzo RL, Foright RM, Hull SE, Knaub LA, Johnson-Murguia S, Kinanee F, Kaplan J, Houck JA, Johnson G, Sharp RR, Gillen AE, Jones KL, Zhang AMY, Johnson JD, MacLean PS, Reusch JEB, Wright-Hobart S, Wellberg EA. Breast Cancer Endocrine Therapy Promotes Weight Gain With Distinct Adipose Tissue Effects in Lean and Obese Female Mice. Endocrinology 2021; 162:bqab174. [PMID: 34410380 PMCID: PMC8455348 DOI: 10.1210/endocr/bqab174] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/24/2021] [Indexed: 12/19/2022]
Abstract
Breast cancer survivors treated with tamoxifen and aromatase inhibitors report weight gain and have an elevated risk of type 2 diabetes, especially if they have obesity. These patient experiences are inconsistent with, preclinical studies using high doses of tamoxifen which reported acute weight loss. We investigated the impact of breast cancer endocrine therapies in a preclinical model of obesity and in a small group of breast adipose tissue samples from women taking tamoxifen to understand the clinical findings. Mature female mice were housed at thermoneutrality and fed either a low-fat/low-sucrose (LFLS) or a high-fat/high-sucrose (HFHS) diet. Consistent with the high expression of Esr1 observed in mesenchymal stem cells from adipose tissue, endocrine therapy was associated with adipose accumulation and more preadipocytes compared with estrogen-treated control mice but resulted in fewer adipocyte progenitors only in the context of HFHS. Analysis of subcutaneous adipose stromal cells revealed diet- and treatment-dependent effects of endocrine therapies on various cell types and genes, illustrating the complexity of adipose tissue estrogen receptor signaling. Breast cancer therapies supported adipocyte hypertrophy and associated with hepatic steatosis, hyperinsulinemia, and glucose intolerance, particularly in obese females. Current tamoxifen use associated with larger breast adipocyte diameter only in women with obesity. Our translational studies suggest that endocrine therapies may disrupt adipocyte progenitors and support adipocyte hypertrophy, potentially leading to ectopic lipid deposition that may be linked to a greater type 2 diabetes risk. Monitoring glucose tolerance and potential interventions that target insulin action should be considered for some women receiving life-saving endocrine therapies for breast cancer.
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Affiliation(s)
- Rebecca L Scalzo
- Division of Endocrinology, Metabolism & Diabetes, Department of Medicine; University of Colorado Anschutz Medical Campus, Aurora, CO 80045, USA
- Center for Women’s Health Research; University of Colorado Anschutz Medical Campus, Aurora, CO 80045, USA
- Rocky Mountain Regional VA Medical Center, Aurora, CO 80045, USA
| | - Rebecca M Foright
- Department of Anatomy and Cell Biology, University of Kansas Medical Center, Kansas City, KS 66160, USA
| | - Sara E Hull
- Division of Endocrinology, Metabolism & Diabetes, Department of Medicine; University of Colorado Anschutz Medical Campus, Aurora, CO 80045, USA
| | - Leslie A Knaub
- Division of Endocrinology, Metabolism & Diabetes, Department of Medicine; University of Colorado Anschutz Medical Campus, Aurora, CO 80045, USA
| | - Stevi Johnson-Murguia
- Department of Pathology, University of Oklahoma Health Sciences Center, Stephenson Cancer Center, Harold Hamm Diabetes Research Center, Oklahoma City, OK 73104, USA
| | - Fotobari Kinanee
- Department of Pathology, University of Colorado Anschutz Medical Campus, Aurora, CO 80045, USA
| | - Jeffrey Kaplan
- Department of Pathology, University of Colorado Anschutz Medical Campus, Aurora, CO 80045, USA
| | - Julie A Houck
- Division of Endocrinology, Metabolism & Diabetes, Department of Medicine; University of Colorado Anschutz Medical Campus, Aurora, CO 80045, USA
| | - Ginger Johnson
- Division of Endocrinology, Metabolism & Diabetes, Department of Medicine; University of Colorado Anschutz Medical Campus, Aurora, CO 80045, USA
| | - Rachel R Sharp
- Department of Cell Biology, University of Oklahoma Health Sciences Center, Stephenson Cancer Center, Harold Hamm Diabetes Research Center, Oklahoma City, OK 73104, USA
| | - Austin E Gillen
- Division of Hematology, Department of Medicine, University of Colorado Anschutz Medical Campus, Aurora, CO 80045, USA
| | - Kenneth L Jones
- Department of Cell Biology, University of Oklahoma Health Sciences Center, Stephenson Cancer Center, Harold Hamm Diabetes Research Center, Oklahoma City, OK 73104, USA
| | - Anni M Y Zhang
- Diabetes Research Group, Life Sciences Institute, Department of Cellular and Physiological Sciences, Faculty of Medicine, University of British Columbia, Vancouver, BC, Canada
| | - James D Johnson
- Diabetes Research Group, Life Sciences Institute, Department of Cellular and Physiological Sciences, Faculty of Medicine, University of British Columbia, Vancouver, BC, Canada
| | - Paul S MacLean
- Division of Endocrinology, Metabolism & Diabetes, Department of Medicine; University of Colorado Anschutz Medical Campus, Aurora, CO 80045, USA
- Center for Women’s Health Research; University of Colorado Anschutz Medical Campus, Aurora, CO 80045, USA
- Department of Pathology, University of Colorado Anschutz Medical Campus, Aurora, CO 80045, USA
| | - Jane E B Reusch
- Division of Endocrinology, Metabolism & Diabetes, Department of Medicine; University of Colorado Anschutz Medical Campus, Aurora, CO 80045, USA
- Center for Women’s Health Research; University of Colorado Anschutz Medical Campus, Aurora, CO 80045, USA
- Rocky Mountain Regional VA Medical Center, Aurora, CO 80045, USA
| | - Sabrina Wright-Hobart
- Department of Pathology, University of Colorado Anschutz Medical Campus, Aurora, CO 80045, USA
| | - Elizabeth A Wellberg
- Center for Women’s Health Research; University of Colorado Anschutz Medical Campus, Aurora, CO 80045, USA
- Department of Pathology, University of Oklahoma Health Sciences Center, Stephenson Cancer Center, Harold Hamm Diabetes Research Center, Oklahoma City, OK 73104, USA
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8
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Hagberg CE, Li Q, Kutschke M, Bhowmick D, Kiss E, Shabalina IG, Harms MJ, Shilkova O, Kozina V, Nedergaard J, Boucher J, Thorell A, Spalding KL. Flow Cytometry of Mouse and Human Adipocytes for the Analysis of Browning and Cellular Heterogeneity. Cell Rep 2019; 24:2746-2756.e5. [PMID: 30184507 PMCID: PMC6137819 DOI: 10.1016/j.celrep.2018.08.006] [Citation(s) in RCA: 55] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2018] [Revised: 06/29/2018] [Accepted: 08/02/2018] [Indexed: 01/07/2023] Open
Abstract
Adipocytes, once considered simple lipid-storing cells, are rapidly emerging as complex cells with many biologically diverse functions. A powerful high-throughput method for analyzing single cells is flow cytometry. Several groups have attempted to analyze and sort freshly isolated adipocytes; however, using an adipocyte-specific reporter mouse, we demonstrate that these studies fail to detect the majority of white adipocytes. We define critical settings required for adipocyte flow cytometry and provide a rigid strategy for analyzing and sorting white and brown adipocyte populations. The applicability of our protocol is shown by sorting mouse adipocytes based on size or UCP1 expression and demonstrating that a subset of human adipocytes lacks the β2-adrenergic receptor, particularly in the insulin-resistant state. In conclusion, the present study confers key technological insights for analyzing and sorting mature adipocytes, opening up numerous downstream research applications.
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Affiliation(s)
- Carolina E Hagberg
- Karolinska Institutet/AstraZeneca Integrated Cardio Metabolic Centre (KI/AZ ICMC), Department of Medicine, Karolinska Institutet, Stockholm 14157, Sweden.
| | - Qian Li
- Karolinska Institutet/AstraZeneca Integrated Cardio Metabolic Centre (KI/AZ ICMC), Department of Medicine, Karolinska Institutet, Stockholm 14157, Sweden; Department of Cell and Molecular Biology, Karolinska Institutet, Stockholm 17177, Sweden
| | - Maria Kutschke
- Karolinska Institutet/AstraZeneca Integrated Cardio Metabolic Centre (KI/AZ ICMC), Department of Medicine, Karolinska Institutet, Stockholm 14157, Sweden
| | - Debajit Bhowmick
- Karolinska Institutet/AstraZeneca Integrated Cardio Metabolic Centre (KI/AZ ICMC), Department of Medicine, Karolinska Institutet, Stockholm 14157, Sweden
| | - Endre Kiss
- Department of Cell and Molecular Biology, Karolinska Institutet, Stockholm 17177, Sweden
| | - Irina G Shabalina
- Department of Molecular Biosciences, The Wenner-Gren Institute, Stockholm University, Stockholm 10691, Sweden
| | - Matthew J Harms
- Cardiovascular, Renal, and Metabolism, IMED Biotech Unit, AstraZeneca, Gothenburg 43150, Sweden
| | - Olga Shilkova
- Department of Cell and Molecular Biology, Karolinska Institutet, Stockholm 17177, Sweden
| | - Viviana Kozina
- Department of Cell and Molecular Biology, Karolinska Institutet, Stockholm 17177, Sweden
| | - Jan Nedergaard
- Department of Molecular Biosciences, The Wenner-Gren Institute, Stockholm University, Stockholm 10691, Sweden
| | - Jeremie Boucher
- Cardiovascular, Renal, and Metabolism, IMED Biotech Unit, AstraZeneca, Gothenburg 43150, Sweden; The Lundberg Laboratory for Diabetes Research, University of Gothenburg, Gothenburg 41345, Sweden; Wallenberg Centre for Molecular and Translational Medicine, University of Gothenburg, Gothenburg 41345, Sweden
| | - Anders Thorell
- Karolinska Institutet, Department of Clinical Science, Danderyds Hospital, Stockholm 18288, Sweden; Department of Surgery, Ersta Hospital, Stockholm 11691, Sweden
| | - Kirsty L Spalding
- Karolinska Institutet/AstraZeneca Integrated Cardio Metabolic Centre (KI/AZ ICMC), Department of Medicine, Karolinska Institutet, Stockholm 14157, Sweden; Department of Cell and Molecular Biology, Karolinska Institutet, Stockholm 17177, Sweden.
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9
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Luong Q, Huang J, Lee KY. Deciphering White Adipose Tissue Heterogeneity. BIOLOGY 2019; 8:biology8020023. [PMID: 30978929 PMCID: PMC6628053 DOI: 10.3390/biology8020023] [Citation(s) in RCA: 50] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/02/2019] [Revised: 04/08/2019] [Accepted: 04/09/2019] [Indexed: 01/09/2023]
Abstract
Adipose tissue not only stores energy, but also controls metabolism through secretion of hormones, cytokines, proteins, and microRNAs that affect the function of cells and tissues throughout the body. Adipose tissue is organized into discrete depots throughout the body, and these depots are differentially associated with insulin resistance and increased risk of metabolic disease. In addition to energy-dissipating brown and beige adipocytes, recent lineage tracing studies have demonstrated that individual adipose depots are composed of white adipocytes that are derived from distinct precursor populations, giving rise to distinct subpopulations of energy-storing white adipocytes. In this review, we discuss this developmental and functional heterogeneity of white adipocytes both between and within adipose depots. In particular, we will highlight findings from our recent manuscript in which we find and characterize three major subtypes of white adipocytes. We will discuss these data relating to the differences between subcutaneous and visceral white adipose tissue and in relationship to previous work deciphering adipocyte heterogeneity within adipose tissue depots. Finally, we will discuss the possible implications of adipocyte heterogeneity may have for the understanding of lipodystrophies.
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Affiliation(s)
- Quyen Luong
- Department of Biomedical Sciences, Heritage College of Osteopathic Medicine, Ohio University, Athens, OH 45701, USA.
- The Diabetes Institute, Ohio University, Athens, OH 45701, USA.
| | - Jun Huang
- Department of Biomedical Sciences, Heritage College of Osteopathic Medicine, Ohio University, Athens, OH 45701, USA.
- The Diabetes Institute, Ohio University, Athens, OH 45701, USA.
| | - Kevin Y Lee
- Department of Biomedical Sciences, Heritage College of Osteopathic Medicine, Ohio University, Athens, OH 45701, USA.
- The Diabetes Institute, Ohio University, Athens, OH 45701, USA.
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10
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Gavin KM, Kohrt WM, Klemm DJ, Melanson EL. Modulation of Energy Expenditure by Estrogens and Exercise in Women. Exerc Sport Sci Rev 2018; 46:232-239. [PMID: 30001272 PMCID: PMC6138559 DOI: 10.1249/jes.0000000000000160] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Reducing estrogen in women results in decreases in energy expenditure, but the mechanism(s) remain largely unknown. We postulate that the loss of estrogens in women is associated with increased accumulation of bone marrow-derived adipocytes in white adipose tissue, decreased activity of brown adipose tissue, and reduced levels of physical activity. Regular exercise may counteract the effects of estrogen deficiency.
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Affiliation(s)
- Kathleen M. Gavin
- Division of Geriatric Medicine, School of Medicine, University of Colorado Anschutz Medical Campus,Eastern Colorado VA Geriatric Research, Education, and Clinical Center
| | - Wendy M. Kohrt
- Division of Geriatric Medicine, School of Medicine, University of Colorado Anschutz Medical Campus,Eastern Colorado VA Geriatric Research, Education, and Clinical Center
| | - Dwight J. Klemm
- Eastern Colorado VA Geriatric Research, Education, and Clinical Center,Division of Pulmonary and Critical Care Medicine, University of Colorado Anschutz Medical Campus
| | - Edward L. Melanson
- Division of Geriatric Medicine, School of Medicine, University of Colorado Anschutz Medical Campus,Eastern Colorado VA Geriatric Research, Education, and Clinical Center,Division of Endocrinology, Metabolism, and Diabetes, University of Colorado Anschutz Medical Campus
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11
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Stenkula KG, Erlanson-Albertsson C. Adipose cell size: importance in health and disease. Am J Physiol Regul Integr Comp Physiol 2018; 315:R284-R295. [DOI: 10.1152/ajpregu.00257.2017] [Citation(s) in RCA: 83] [Impact Index Per Article: 13.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Adipose tissue is necessary to harbor energy. To handle excess energy, adipose tissue expands by increasing adipocyte size (hypertrophy) and number (hyperplasia). Here, we have summarized the different experimental techniques used to study adipocyte cell size and describe adipocyte size in relation to insulin resistance, type 2 diabetes, and diet interventions. Hypertrophic adipocytes have an impaired cellular function, and inherent mechanisms restrict their expansion to protect against cell breakage and subsequent inflammation. Reduction of large fat cells by diet restriction, physical activity, or bariatric surgery therefore is necessary to improve cellular function and health. Small fat cells may also be dysfunctional and unable to expand. The distribution and function of the entire cell size range of fat cells, from small to very large fat cells, are an important but understudied aspect of adipose tissue biology. To prevent dysmetabolism, therapeutic strategies to expand small fat cells, recruit new fat cells, and reduce large fat cells are needed.
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Affiliation(s)
- Karin G. Stenkula
- Glucose Transport and Protein Trafficking, Biomedical Center, Lund University, Lund, Sweden
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12
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Gavin KM, Sullivan TM, Kohrt WM, Majka SM, Klemm DJ. Ovarian Hormones Regulate the Production of Adipocytes From Bone Marrow-Derived Cells. Front Endocrinol (Lausanne) 2018; 9:276. [PMID: 29892267 PMCID: PMC5985395 DOI: 10.3389/fendo.2018.00276] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/14/2018] [Accepted: 05/11/2018] [Indexed: 01/02/2023] Open
Abstract
Sex differences in body fat distribution and menopause-associated shifts in regional adiposity suggest that sex hormones play an important role in regulating the differentiation and distribution of adipocytes, but the underlying mechanisms have not been fully explained. The aim of this study was to determine whether ovarian hormone status influences the production and distribution of adipocytes in adipose tissue arising from bone marrow-derived cells. Nine- to ten-week-old ovariectomized (OVX), surgery naïve (WT), and estrogen receptor alpha knockout (αERKO) mice underwent bone marrow transplantation from luciferase or green fluorescent protein expressing donors. A subset of OVX animals had estradiol (E2) added back. Eight-weeks posttransplant, whole body and gonadal fat BM-derived adipocyte production was highest in OVX and αERKO mice, which was attenuated in OVX mice by E2 add-back. All groups demonstrated the highest bone marrow derived adipocyte (BMDA) production in the gonadal adipose depot, a visceral fat depot in mice. Taken together, the loss of ovarian hormones increases the production of BMDAs. If translatable across species, production of BMDA may be a mechanism by which visceral adiposity increases in estrogen-deficient postmenopausal women.
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Affiliation(s)
- Kathleen M. Gavin
- Division of Geriatric Medicine, School of Medicine, University of Colorado Anschutz Medical Campus, Aurora, CO, United States
- Charles C. Gates Center for Regenerative Medicine and Stem Cell Biology, School of Medicine, University of Colorado Anschutz Medical Campus, Aurora, CO, United States
- Geriatric Research, Education and Clinical Center, VA Eastern Colorado Heath Care System, Denver, CO, United States
- *Correspondence: Kathleen M. Gavin,
| | - Timothy M. Sullivan
- Geriatric Research, Education and Clinical Center, VA Eastern Colorado Heath Care System, Denver, CO, United States
- Division of Pulmonary Sciences and Critical Care Medicine, School of Medicine, University of Colorado Anschutz Medical Campus, Aurora, CO, United States
- Cardiovascular Pulmonary Research Laboratory, School of Medicine, University of Colorado Anschutz Medical Campus, Aurora, CO, United States
| | - Wendy M. Kohrt
- Division of Geriatric Medicine, School of Medicine, University of Colorado Anschutz Medical Campus, Aurora, CO, United States
- Geriatric Research, Education and Clinical Center, VA Eastern Colorado Heath Care System, Denver, CO, United States
| | - Susan M. Majka
- Division of Allergy, Pulmonary, and Critical Care Medicine, Department of Medicine, Vanderbilt University School of Medicine, Nashville, TN, United States
| | - Dwight J. Klemm
- Charles C. Gates Center for Regenerative Medicine and Stem Cell Biology, School of Medicine, University of Colorado Anschutz Medical Campus, Aurora, CO, United States
- Geriatric Research, Education and Clinical Center, VA Eastern Colorado Heath Care System, Denver, CO, United States
- Division of Pulmonary Sciences and Critical Care Medicine, School of Medicine, University of Colorado Anschutz Medical Campus, Aurora, CO, United States
- Cardiovascular Pulmonary Research Laboratory, School of Medicine, University of Colorado Anschutz Medical Campus, Aurora, CO, United States
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13
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Gavin KM, Majka SM, Kohrt WM, Miller HL, Sullivan TM, Klemm DJ. Hematopoietic-to-mesenchymal transition of adipose tissue macrophages is regulated by integrin β1 and fabricated fibrin matrices. Adipocyte 2017; 6:234-249. [PMID: 28441086 DOI: 10.1080/21623945.2017.1314403] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
Abstract
Some bona fide adult adipocytes arise de novo from a bone marrow-derived myeloid lineage. These studies further demonstrate that adipose tissue stroma contains a resident population of myeloid cells capable of adipocyte and multilineage mesenchymal differentiation. These resident myeloid cells lack hematopoietic markers and express mesenchymal and progenitor cell markers. Because bone marrow mesenchymal progenitor cells have not been shown to enter the circulation, we hypothesized that myeloid cells acquire mesenchymal differentiation capacity in adipose tissue. We fabricated a 3-dimensional fibrin matrix culture system to define the adipose differentiation potential of adipose tissue-resident myeloid subpopulations, including macrophages, granulocytes and dendritic cells. Our data show that multilineage mesenchymal potential was limited to adipose tissue macrophages, characterized by the acquisition of adipocyte, osteoblast, chondrocyte and skeletal muscle myocyte phenotypes. Fibrin hydrogel matrices stimulated macrophage loss of hematopoietic cell lineage determinants and the expression of mesenchymal and progenitor cell markers, including integrin β1. Ablation of integrin β1 in macrophages inhibited adipocyte specification. Therefore, some bona fide adipocytes are specifically derived from adipose tissue-resident macrophages via an integrin β1-dependent hematopoietic-to-mesenchymal transition, whereby they become capable of multipotent mesenchymal differentiation. The requirement for integrin β1 highlights this molecule as a potential target for controlling the production of marrow-derived adipocytes and their contribution to adipose tissue development and function.
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Affiliation(s)
- Kathleen M. Gavin
- Geriatric Research, Education and Clinical Center, VA Eastern Colorado Health Care System, Denver, CO
- Division of Geriatric Medicine, Department of Medicine, University of Colorado Anschutz Medical Center, Aurora, CO
| | - Susan M. Majka
- Division of Allergy, Pulmonary, and Critical Care Medicine, Department of Medicine, Vanderbilt University School of Medicine, Nashville, TN
| | - Wendy M. Kohrt
- Geriatric Research, Education and Clinical Center, VA Eastern Colorado Health Care System, Denver, CO
- Division of Geriatric Medicine, Department of Medicine, University of Colorado Anschutz Medical Center, Aurora, CO
| | - Heidi L. Miller
- Division of Pulmonary and Critical Care Medicine, University of Colorado Anschutz Medical Center, Aurora, CO
| | - Timothy M. Sullivan
- Division of Pulmonary and Critical Care Medicine, University of Colorado Anschutz Medical Center, Aurora, CO
| | - Dwight J. Klemm
- Geriatric Research, Education and Clinical Center, VA Eastern Colorado Health Care System, Denver, CO
- Division of Pulmonary and Critical Care Medicine, University of Colorado Anschutz Medical Center, Aurora, CO
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14
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Boumelhem BB, Assinder SJ, Bell-Anderson KS, Fraser ST. Flow cytometric single cell analysis reveals heterogeneity between adipose depots. Adipocyte 2017; 6:112-123. [PMID: 28453382 DOI: 10.1080/21623945.2017.1319536] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
Understanding adipose tissue heterogeneity is hindered by the paucity of methods to analyze mature adipocytes at the single cell level. Here, we report a system for analyzing live adipocytes from different adipose depots in the adult mouse. Single cell suspensions of buoyant adipocytes were separated from the stromal vascular fraction and analyzed by flow cytometry. Compared to other lipophilic dyes, Nile Red uptake effectively distinguished adipocyte populations. Nile Red fluorescence increased with adipocyte size and granularity and could be combined with MitoTracker® Deep Red or fluorescent antibody labeling to further dissect adipose populations. Epicardial adipocytes exhibited the least mitochondrial membrane depolarization and highest fatty-acid translocase CD36 surface expression. In contrast, brown adipocytes showed low surface CD36 expression. Pregnancy resulted in reduced mitochondrial membrane depolarisation and increased CD36 surface expression in brown and epicardial adipocyte populations respectively. Our protocol revealed unreported heterogeneity between adipose depots and highlights the utility of flow cytometry for screening adipocytes at the single cell level.
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Affiliation(s)
- Badwi B. Boumelhem
- Discipline of Physiology, University of Sydney, Sydney, Australia
- Bosch Institute, University of Sydney, Sydney, Australia
| | - Stephen J. Assinder
- Discipline of Physiology, University of Sydney, Sydney, Australia
- Bosch Institute, University of Sydney, Sydney, Australia
| | - Kim S. Bell-Anderson
- Bosch Institute, University of Sydney, Sydney, Australia
- Discipline of Anatomy and Histology, University of Sydney, Sydney, Australia
- Charles Perkins Centre, School of Life and Environmental Sciences, University of Sydney, Sydney, Australia
| | - Stuart T. Fraser
- Discipline of Physiology, University of Sydney, Sydney, Australia
- Bosch Institute, University of Sydney, Sydney, Australia
- Discipline of Anatomy and Histology, University of Sydney, Sydney, Australia
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15
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Abstract
Marrow adipose tissue (MAT) is a recently identified endocrine organ capable of modulating a host of responses. Given its intimate proximity to the bone microenvironment, the impact marrow adipocytes exert on bone has attracted much interest and scientific inquiry. Although many questions and controversies remain about marrow adipocytes, multiple conditions/disease states in which alterations occur have provided clues about their function. The consensus is that MAT is associated inversely with bone density and quality. While further investigation is warranted, MAT has clearly been demonstrated as an active dynamic depot that contributes to bone turnover and overall metabolic homeostasis.
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Affiliation(s)
| | - Clifford J Rosen
- Maine Medical Center Research Institute, 81 Research Drive, Scarborough, ME 04074, USA.
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16
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McArdle S, Mikulski Z, Ley K. Live cell imaging to understand monocyte, macrophage, and dendritic cell function in atherosclerosis. J Exp Med 2016; 213:1117-31. [PMID: 27270892 PMCID: PMC4925021 DOI: 10.1084/jem.20151885] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2015] [Accepted: 04/28/2016] [Indexed: 02/06/2023] Open
Abstract
Ley et al. provide a review of the technology and accomplishments of dynamic imaging of myeloid cells in atherosclerosis. Intravital imaging is an invaluable tool for understanding the function of cells in healthy and diseased tissues. It provides a window into dynamic processes that cannot be studied by other techniques. This review will cover the benefits and limitations of various techniques for labeling and imaging myeloid cells, with a special focus on imaging cells in atherosclerotic arteries. Although intravital imaging is a powerful tool for understanding cell function, it alone does not provide a complete picture of the cell. Other techniques, such as flow cytometry and transcriptomics, must be combined with intravital imaging to fully understand a cell's phenotype, lineage, and function.
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Affiliation(s)
- Sara McArdle
- Division of Inflammation Biology and Microscopy Core, La Jolla Institute of Allergy and Immunology, La Jolla, CA 92037
| | - Zbigniew Mikulski
- Division of Inflammation Biology and Microscopy Core, La Jolla Institute of Allergy and Immunology, La Jolla, CA 92037
| | - Klaus Ley
- Division of Inflammation Biology and Microscopy Core, La Jolla Institute of Allergy and Immunology, La Jolla, CA 92037
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17
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Pagnotti GM, Styner M. Exercise Regulation of Marrow Adipose Tissue. Front Endocrinol (Lausanne) 2016; 7:94. [PMID: 27471493 PMCID: PMC4943947 DOI: 10.3389/fendo.2016.00094] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/21/2016] [Accepted: 07/04/2016] [Indexed: 12/20/2022] Open
Abstract
Despite association with low bone density and skeletal fractures, marrow adipose tissue (MAT) remains poorly understood. The marrow adipocyte originates from the mesenchymal stem cell (MSC) pool that also gives rise to osteoblasts, chondrocytes, and myocytes, among other cell types. To date, the presence of MAT has been attributed to preferential biasing of MSC into the adipocyte rather than osteoblast lineage, thus negatively impacting bone formation. Here, we focus on understanding the physiology of MAT in the setting of exercise, dietary interventions, and pharmacologic agents that alter fat metabolism. The beneficial effect of exercise on musculoskeletal strength is known: exercise induces bone formation, encourages growth of skeletally supportive tissues, inhibits bone resorption, and alters skeletal architecture through direct and indirect effects on a multiplicity of cells involved in skeletal adaptation. MAT is less well studied due to the lack of reproducible quantification techniques. In recent work, osmium-based 3D quantification shows a robust response of MAT to both dietary and exercise intervention in that MAT is elevated in response to high-fat diet and can be suppressed following daily exercise. Exercise-induced bone formation correlates with suppression of MAT, such that exercise effects might be due to either calorie expenditure from this depot or from mechanical biasing of MSC lineage away from fat and toward bone, or a combination thereof. Following treatment with the anti-diabetes drug rosiglitazone - a PPARγ-agonist known to increase MAT and fracture risk - mice demonstrate a fivefold higher femur MAT volume compared to the controls. In addition to preventing MAT accumulation in control mice, exercise intervention significantly lowers MAT accumulation in rosiglitazone-treated mice. Importantly, exercise induction of trabecular bone volume is unhindered by rosiglitazone. Thus, despite rosiglitazone augmentation of MAT, exercise significantly suppresses MAT volume and induces bone formation. That exercise can both suppress MAT volume and increase bone quantity, notwithstanding the skeletal harm induced by rosiglitazone, underscores exercise as a powerful regulator of bone remodeling, encouraging marrow stem cells toward the osteogenic lineage to fulfill an adaptive need for bone formation. Thus, exercise represents an effective strategy to mitigate the deleterious effects of overeating and iatrogenic etiologies on bone and fat.
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Affiliation(s)
- Gabriel M. Pagnotti
- Department of Biomedical Engineering, Stony Brook University, Stony Brook, NY, USA
| | - Maya Styner
- Department of Medicine, University of North Carolina, Chapel Hill, NC, USA
- *Correspondence: Maya Styner,
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18
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Gavin KM, Gutman JA, Kohrt WM, Wei Q, Shea KL, Miller HL, Sullivan TM, Erickson PF, Helm KM, Acosta AS, Childs CR, Musselwhite E, Varella-Garcia M, Kelly K, Majka SM, Klemm DJ. De novo generation of adipocytes from circulating progenitor cells in mouse and human adipose tissue. FASEB J 2015; 30:1096-108. [PMID: 26581599 DOI: 10.1096/fj.15-278994] [Citation(s) in RCA: 42] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2015] [Accepted: 11/02/2015] [Indexed: 12/21/2022]
Abstract
White adipocytes in adults are typically derived from tissue resident mesenchymal progenitors. The recent identification of de novo production of adipocytes from bone marrow progenitor-derived cells in mice challenges this paradigm and indicates an alternative lineage specification that adipocytes exist. We hypothesized that alternative lineage specification of white adipocytes is also present in human adipose tissue. Bone marrow from transgenic mice in which luciferase expression is governed by the adipocyte-restricted adiponectin gene promoter was adoptively transferred to wild-type recipient mice. Light emission was quantitated in recipients by in vivo imaging and direct enzyme assay. Adipocytes were also obtained from human recipients of hematopoietic stem cell transplantation. DNA was isolated, and microsatellite polymorphisms were exploited to quantify donor/recipient chimerism. Luciferase emission was detected from major fat depots of transplanted mice. No light emission was observed from intestines, liver, or lungs. Up to 35% of adipocytes in humans were generated from donor marrow cells in the absence of cell fusion. Nontransplanted mice and stromal-vascular fraction samples were used as negative and positive controls for the mouse and human experiments, respectively. This study provides evidence for a nontissue resident origin of an adipocyte subpopulation in both mice and humans.
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Affiliation(s)
- Kathleen M Gavin
- *Division of Geriatric Medicine, Division of Medical Oncology, and Division of Pulmonary Sciences and Critical Care Medicine, Department of Medicine, School of Medicine, Flow Cytometry Shared Resource, Molecular Pathology/Cytogenetics Shared Resource, University of Colorado Cancer Center, Charles C. Gates Center for Regenerative Medicine and Stem Cell Biology, and Colorado Obesity Research Initiative, University of Colorado Anschutz Medical Campus, Aurora, Colorado, USA; Molecular Diagnostic Laboratory, Children's Hospital Colorado, Aurora, Colorado, USA; and Division of Allergy, Pulmonary, and Critical Care Medicine, Department of Medicine, and **Center for Stem Cell Biology, Vanderbilt University School of Medicine, Nashville, Tennessee, USA
| | - Jonathan A Gutman
- *Division of Geriatric Medicine, Division of Medical Oncology, and Division of Pulmonary Sciences and Critical Care Medicine, Department of Medicine, School of Medicine, Flow Cytometry Shared Resource, Molecular Pathology/Cytogenetics Shared Resource, University of Colorado Cancer Center, Charles C. Gates Center for Regenerative Medicine and Stem Cell Biology, and Colorado Obesity Research Initiative, University of Colorado Anschutz Medical Campus, Aurora, Colorado, USA; Molecular Diagnostic Laboratory, Children's Hospital Colorado, Aurora, Colorado, USA; and Division of Allergy, Pulmonary, and Critical Care Medicine, Department of Medicine, and **Center for Stem Cell Biology, Vanderbilt University School of Medicine, Nashville, Tennessee, USA
| | - Wendy M Kohrt
- *Division of Geriatric Medicine, Division of Medical Oncology, and Division of Pulmonary Sciences and Critical Care Medicine, Department of Medicine, School of Medicine, Flow Cytometry Shared Resource, Molecular Pathology/Cytogenetics Shared Resource, University of Colorado Cancer Center, Charles C. Gates Center for Regenerative Medicine and Stem Cell Biology, and Colorado Obesity Research Initiative, University of Colorado Anschutz Medical Campus, Aurora, Colorado, USA; Molecular Diagnostic Laboratory, Children's Hospital Colorado, Aurora, Colorado, USA; and Division of Allergy, Pulmonary, and Critical Care Medicine, Department of Medicine, and **Center for Stem Cell Biology, Vanderbilt University School of Medicine, Nashville, Tennessee, USA
| | - Qi Wei
- *Division of Geriatric Medicine, Division of Medical Oncology, and Division of Pulmonary Sciences and Critical Care Medicine, Department of Medicine, School of Medicine, Flow Cytometry Shared Resource, Molecular Pathology/Cytogenetics Shared Resource, University of Colorado Cancer Center, Charles C. Gates Center for Regenerative Medicine and Stem Cell Biology, and Colorado Obesity Research Initiative, University of Colorado Anschutz Medical Campus, Aurora, Colorado, USA; Molecular Diagnostic Laboratory, Children's Hospital Colorado, Aurora, Colorado, USA; and Division of Allergy, Pulmonary, and Critical Care Medicine, Department of Medicine, and **Center for Stem Cell Biology, Vanderbilt University School of Medicine, Nashville, Tennessee, USA
| | - Karen L Shea
- *Division of Geriatric Medicine, Division of Medical Oncology, and Division of Pulmonary Sciences and Critical Care Medicine, Department of Medicine, School of Medicine, Flow Cytometry Shared Resource, Molecular Pathology/Cytogenetics Shared Resource, University of Colorado Cancer Center, Charles C. Gates Center for Regenerative Medicine and Stem Cell Biology, and Colorado Obesity Research Initiative, University of Colorado Anschutz Medical Campus, Aurora, Colorado, USA; Molecular Diagnostic Laboratory, Children's Hospital Colorado, Aurora, Colorado, USA; and Division of Allergy, Pulmonary, and Critical Care Medicine, Department of Medicine, and **Center for Stem Cell Biology, Vanderbilt University School of Medicine, Nashville, Tennessee, USA
| | - Heidi L Miller
- *Division of Geriatric Medicine, Division of Medical Oncology, and Division of Pulmonary Sciences and Critical Care Medicine, Department of Medicine, School of Medicine, Flow Cytometry Shared Resource, Molecular Pathology/Cytogenetics Shared Resource, University of Colorado Cancer Center, Charles C. Gates Center for Regenerative Medicine and Stem Cell Biology, and Colorado Obesity Research Initiative, University of Colorado Anschutz Medical Campus, Aurora, Colorado, USA; Molecular Diagnostic Laboratory, Children's Hospital Colorado, Aurora, Colorado, USA; and Division of Allergy, Pulmonary, and Critical Care Medicine, Department of Medicine, and **Center for Stem Cell Biology, Vanderbilt University School of Medicine, Nashville, Tennessee, USA
| | - Timothy M Sullivan
- *Division of Geriatric Medicine, Division of Medical Oncology, and Division of Pulmonary Sciences and Critical Care Medicine, Department of Medicine, School of Medicine, Flow Cytometry Shared Resource, Molecular Pathology/Cytogenetics Shared Resource, University of Colorado Cancer Center, Charles C. Gates Center for Regenerative Medicine and Stem Cell Biology, and Colorado Obesity Research Initiative, University of Colorado Anschutz Medical Campus, Aurora, Colorado, USA; Molecular Diagnostic Laboratory, Children's Hospital Colorado, Aurora, Colorado, USA; and Division of Allergy, Pulmonary, and Critical Care Medicine, Department of Medicine, and **Center for Stem Cell Biology, Vanderbilt University School of Medicine, Nashville, Tennessee, USA
| | - Paul F Erickson
- *Division of Geriatric Medicine, Division of Medical Oncology, and Division of Pulmonary Sciences and Critical Care Medicine, Department of Medicine, School of Medicine, Flow Cytometry Shared Resource, Molecular Pathology/Cytogenetics Shared Resource, University of Colorado Cancer Center, Charles C. Gates Center for Regenerative Medicine and Stem Cell Biology, and Colorado Obesity Research Initiative, University of Colorado Anschutz Medical Campus, Aurora, Colorado, USA; Molecular Diagnostic Laboratory, Children's Hospital Colorado, Aurora, Colorado, USA; and Division of Allergy, Pulmonary, and Critical Care Medicine, Department of Medicine, and **Center for Stem Cell Biology, Vanderbilt University School of Medicine, Nashville, Tennessee, USA
| | - Karen M Helm
- *Division of Geriatric Medicine, Division of Medical Oncology, and Division of Pulmonary Sciences and Critical Care Medicine, Department of Medicine, School of Medicine, Flow Cytometry Shared Resource, Molecular Pathology/Cytogenetics Shared Resource, University of Colorado Cancer Center, Charles C. Gates Center for Regenerative Medicine and Stem Cell Biology, and Colorado Obesity Research Initiative, University of Colorado Anschutz Medical Campus, Aurora, Colorado, USA; Molecular Diagnostic Laboratory, Children's Hospital Colorado, Aurora, Colorado, USA; and Division of Allergy, Pulmonary, and Critical Care Medicine, Department of Medicine, and **Center for Stem Cell Biology, Vanderbilt University School of Medicine, Nashville, Tennessee, USA
| | - Alistaire S Acosta
- *Division of Geriatric Medicine, Division of Medical Oncology, and Division of Pulmonary Sciences and Critical Care Medicine, Department of Medicine, School of Medicine, Flow Cytometry Shared Resource, Molecular Pathology/Cytogenetics Shared Resource, University of Colorado Cancer Center, Charles C. Gates Center for Regenerative Medicine and Stem Cell Biology, and Colorado Obesity Research Initiative, University of Colorado Anschutz Medical Campus, Aurora, Colorado, USA; Molecular Diagnostic Laboratory, Children's Hospital Colorado, Aurora, Colorado, USA; and Division of Allergy, Pulmonary, and Critical Care Medicine, Department of Medicine, and **Center for Stem Cell Biology, Vanderbilt University School of Medicine, Nashville, Tennessee, USA
| | - Christine R Childs
- *Division of Geriatric Medicine, Division of Medical Oncology, and Division of Pulmonary Sciences and Critical Care Medicine, Department of Medicine, School of Medicine, Flow Cytometry Shared Resource, Molecular Pathology/Cytogenetics Shared Resource, University of Colorado Cancer Center, Charles C. Gates Center for Regenerative Medicine and Stem Cell Biology, and Colorado Obesity Research Initiative, University of Colorado Anschutz Medical Campus, Aurora, Colorado, USA; Molecular Diagnostic Laboratory, Children's Hospital Colorado, Aurora, Colorado, USA; and Division of Allergy, Pulmonary, and Critical Care Medicine, Department of Medicine, and **Center for Stem Cell Biology, Vanderbilt University School of Medicine, Nashville, Tennessee, USA
| | - Evelyn Musselwhite
- *Division of Geriatric Medicine, Division of Medical Oncology, and Division of Pulmonary Sciences and Critical Care Medicine, Department of Medicine, School of Medicine, Flow Cytometry Shared Resource, Molecular Pathology/Cytogenetics Shared Resource, University of Colorado Cancer Center, Charles C. Gates Center for Regenerative Medicine and Stem Cell Biology, and Colorado Obesity Research Initiative, University of Colorado Anschutz Medical Campus, Aurora, Colorado, USA; Molecular Diagnostic Laboratory, Children's Hospital Colorado, Aurora, Colorado, USA; and Division of Allergy, Pulmonary, and Critical Care Medicine, Department of Medicine, and **Center for Stem Cell Biology, Vanderbilt University School of Medicine, Nashville, Tennessee, USA
| | - Marileila Varella-Garcia
- *Division of Geriatric Medicine, Division of Medical Oncology, and Division of Pulmonary Sciences and Critical Care Medicine, Department of Medicine, School of Medicine, Flow Cytometry Shared Resource, Molecular Pathology/Cytogenetics Shared Resource, University of Colorado Cancer Center, Charles C. Gates Center for Regenerative Medicine and Stem Cell Biology, and Colorado Obesity Research Initiative, University of Colorado Anschutz Medical Campus, Aurora, Colorado, USA; Molecular Diagnostic Laboratory, Children's Hospital Colorado, Aurora, Colorado, USA; and Division of Allergy, Pulmonary, and Critical Care Medicine, Department of Medicine, and **Center for Stem Cell Biology, Vanderbilt University School of Medicine, Nashville, Tennessee, USA
| | - Kimberly Kelly
- *Division of Geriatric Medicine, Division of Medical Oncology, and Division of Pulmonary Sciences and Critical Care Medicine, Department of Medicine, School of Medicine, Flow Cytometry Shared Resource, Molecular Pathology/Cytogenetics Shared Resource, University of Colorado Cancer Center, Charles C. Gates Center for Regenerative Medicine and Stem Cell Biology, and Colorado Obesity Research Initiative, University of Colorado Anschutz Medical Campus, Aurora, Colorado, USA; Molecular Diagnostic Laboratory, Children's Hospital Colorado, Aurora, Colorado, USA; and Division of Allergy, Pulmonary, and Critical Care Medicine, Department of Medicine, and **Center for Stem Cell Biology, Vanderbilt University School of Medicine, Nashville, Tennessee, USA
| | - Susan M Majka
- *Division of Geriatric Medicine, Division of Medical Oncology, and Division of Pulmonary Sciences and Critical Care Medicine, Department of Medicine, School of Medicine, Flow Cytometry Shared Resource, Molecular Pathology/Cytogenetics Shared Resource, University of Colorado Cancer Center, Charles C. Gates Center for Regenerative Medicine and Stem Cell Biology, and Colorado Obesity Research Initiative, University of Colorado Anschutz Medical Campus, Aurora, Colorado, USA; Molecular Diagnostic Laboratory, Children's Hospital Colorado, Aurora, Colorado, USA; and Division of Allergy, Pulmonary, and Critical Care Medicine, Department of Medicine, and **Center for Stem Cell Biology, Vanderbilt University School of Medicine, Nashville, Tennessee, USA
| | - Dwight J Klemm
- *Division of Geriatric Medicine, Division of Medical Oncology, and Division of Pulmonary Sciences and Critical Care Medicine, Department of Medicine, School of Medicine, Flow Cytometry Shared Resource, Molecular Pathology/Cytogenetics Shared Resource, University of Colorado Cancer Center, Charles C. Gates Center for Regenerative Medicine and Stem Cell Biology, and Colorado Obesity Research Initiative, University of Colorado Anschutz Medical Campus, Aurora, Colorado, USA; Molecular Diagnostic Laboratory, Children's Hospital Colorado, Aurora, Colorado, USA; and Division of Allergy, Pulmonary, and Critical Care Medicine, Department of Medicine, and **Center for Stem Cell Biology, Vanderbilt University School of Medicine, Nashville, Tennessee, USA
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19
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Rydén M, Uzunel M, Hård JL, Borgström E, Mold JE, Arner E, Mejhert N, Andersson DP, Widlund Y, Hassan M, Jones CV, Spalding KL, Svahn BM, Ahmadian A, Frisén J, Bernard S, Mattsson J, Arner P. Transplanted Bone Marrow-Derived Cells Contribute to Human Adipogenesis. Cell Metab 2015; 22:408-17. [PMID: 26190649 DOI: 10.1016/j.cmet.2015.06.011] [Citation(s) in RCA: 66] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/30/2015] [Revised: 04/30/2015] [Accepted: 06/14/2015] [Indexed: 11/25/2022]
Abstract
Because human white adipocytes display a high turnover throughout adulthood, a continuous supply of precursor cells is required to maintain adipogenesis. Bone marrow (BM)-derived progenitor cells may contribute to mammalian adipogenesis; however, results in animal models are conflicting. Here we demonstrate in 65 subjects who underwent allogeneic BM or peripheral blood stem cell (PBSC) transplantation that, over the entire lifespan, BM/PBSC-derived progenitor cells contribute ∼10% to the subcutaneous adipocyte population. While this is independent of gender, age, and different transplantation-related parameters, body fat mass exerts a strong influence, with up to 2.5-fold increased donor cell contribution in obese individuals. Exome and whole-genome sequencing of single adipocytes suggests that BM/PBSC-derived progenitors contribute to adipose tissue via both differentiation and cell fusion. Thus, at least in the setting of transplantation, BM serves as a reservoir for adipocyte progenitors, particularly in obese subjects.
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Affiliation(s)
- Mikael Rydén
- Department of Medicine (H7), Karolinska Institutet, 141 86 Stockholm, Sweden.
| | - Mehmet Uzunel
- Department of Clinical Immunology, Karolinska Institutet, 141 86 Stockholm, Sweden
| | - Joanna L Hård
- Department of Cell and Molecular Biology (C5), Karolinska Institutet, 171 77 Stockholm, Sweden
| | - Erik Borgström
- Science for Life Laboratory, Division of Gene Technology, Royal Institute of Technology (KTH), School of Biotechnology, 171 65 Stockholm, Sweden
| | - Jeff E Mold
- Department of Cell and Molecular Biology (C5), Karolinska Institutet, 171 77 Stockholm, Sweden
| | - Erik Arner
- Department of Medicine (H7), Karolinska Institutet, 141 86 Stockholm, Sweden
| | - Niklas Mejhert
- Department of Medicine (H7), Karolinska Institutet, 141 86 Stockholm, Sweden
| | - Daniel P Andersson
- Department of Medicine (H7), Karolinska Institutet, 141 86 Stockholm, Sweden
| | - Yvonne Widlund
- Department of Medicine (H7), Karolinska Institutet, 141 86 Stockholm, Sweden
| | - Moustapha Hassan
- Department of Laboratory Medicine (H5), Karolinska Institutet, 141 86 Stockholm, Sweden
| | - Christina V Jones
- Department of Cell and Molecular Biology (C5), Karolinska Institutet, 171 77 Stockholm, Sweden
| | - Kirsty L Spalding
- Department of Cell and Molecular Biology (C5), Karolinska Institutet, 171 77 Stockholm, Sweden
| | - Britt-Marie Svahn
- Department of Clinical Immunology, Karolinska Institutet, 141 86 Stockholm, Sweden
| | - Afshin Ahmadian
- Science for Life Laboratory, Division of Gene Technology, Royal Institute of Technology (KTH), School of Biotechnology, 171 65 Stockholm, Sweden
| | - Jonas Frisén
- Department of Cell and Molecular Biology (C5), Karolinska Institutet, 171 77 Stockholm, Sweden
| | - Samuel Bernard
- Institut Camille Jordan, CNRS UMR 5208, University of Lyon, 69622 Villeurbanne, France
| | - Jonas Mattsson
- Department of Clinical Immunology, Karolinska Institutet, 141 86 Stockholm, Sweden
| | - Peter Arner
- Department of Medicine (H7), Karolinska Institutet, 141 86 Stockholm, Sweden
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20
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Berry R, Rodeheffer MS, Rosen CJ, Horowitz MC. Adipose Tissue Residing Progenitors (Adipocyte Lineage Progenitors and Adipose Derived Stem Cells (ADSC). ACTA ACUST UNITED AC 2015; 1:101-109. [PMID: 26526875 DOI: 10.1007/s40610-015-0018-y] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
The formation of brown, white and beige adipocytes have been a subject of intense scientific interest in recent years due to the growing obesity epidemic in the United States and around the world. This interest has led to the identification and characterization of specific tissue resident progenitor cells that give rise to each adipocyte population in vivo. However, much still remains to be discovered about each progenitor population in terms of their "niche" within each tissue and how they are regulated at the cellular and molecular level during healthy and diseased states. While our knowledge of brown, white and beige adipose tissue is rapidly increasing, little is still known about marrow adipose tissue and its progenitor despite recent studies demonstrating possible roles for marrow adipose tissue in regulating the hematopoietic space and systemic metabolism at large. This chapter focuses on our current knowledge of brown, white, beige and marrow adipose tissue with a specific focus on the formation of each tissue from tissue resident progenitor cells.
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Affiliation(s)
- Ryan Berry
- Department of Orthopaedics and Rehabiliation, Yale School of Medicine, New Haven, CT 06510
| | - Matthew S Rodeheffer
- Department of Molecular, Cell and Developmental Biology, Yale University and the Section of Comparative Medicine, Yale School of Medicine, 375 Congress Avenue, New Haven, CT 06510
| | - Clifford J Rosen
- The Center for Clinical and Translational Research, Maine Medical Center Research Institute, Scarborough, Maine 04074
| | - Mark C Horowitz
- Department of Orthopaedics and Rehabiliation, Yale School of Medicine, New Haven, CT 06510
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21
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Hyvönen MT, Spalding KL. Maintenance of white adipose tissue in man. Int J Biochem Cell Biol 2014; 56:123-32. [PMID: 25240584 DOI: 10.1016/j.biocel.2014.09.013] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2014] [Revised: 08/30/2014] [Accepted: 09/09/2014] [Indexed: 12/18/2022]
Abstract
Obesity is increasing in an epidemic manner in most countries and constitutes a public health problem by enhancing the risk for diseases such as diabetes, fatty liver disease and atherosclerosis. Together these diseases form a cluster referred to as the metabolic syndrome. Despite the negative health consequences associated with excess adipose tissue, very little is known about the origin and maintenance of white adipose tissue in man. In this review we discuss what is known about the turnover of adult human adipocytes and their precursors, as well as adipose tissue heterogeneity, plasticity and developmental origins. The focus of this review is human tissue, however in many cases human data are missing and are inferred from animal studies. As such, reference to animal studies are made where human data is not available. This article is part of a directed issue entitled: Regenerative Medicine: the challenge of translation.
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Affiliation(s)
- Mervi T Hyvönen
- Department of Cell and Molecular Biology, Karolinska Institute, Berzelius väg 35, Stockholm 171-77, Sweden
| | - Kirsty L Spalding
- Department of Cell and Molecular Biology, Karolinska Institute, Berzelius väg 35, Stockholm 171-77, Sweden.
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22
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Abstract
Obesity, defined as an excessive increase in white adipose tissue (WAT), is a global health epidemic. In obesity, WAT expands by increased adipocyte size (hypertrophy) and number (hyperplasia). The location and cellular mechanisms of WAT expansion greatly affect the pathogenesis of obesity. However, the cellular and molecular mechanisms regulating adipocyte size, number, and depot-dependent expansion in vivo remain largely unknown. This perspective summarizes previous work addressing adipocyte number in development and obesity and discusses recent advances in the methodologies, genetic tools, and characterization of in vivo adipocyte precursor cells allowing for directed study of hyperplastic WAT growth in vivo.
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Affiliation(s)
- Ryan Berry
- Department of Molecular, Cell and Developmental Biology, Yale University School of Medicine, New Haven, CT 06520, USA
| | - Elise Jeffery
- Department of Cell Biology, Yale University School of Medicine, New Haven, CT 06520, USA
| | - Matthew S Rodeheffer
- Department of Molecular, Cell and Developmental Biology, Yale University School of Medicine, New Haven, CT 06520, USA; Section of Comparative Medicine, Yale University School of Medicine, New Haven, CT 06520, USA; Yale Stem Cell Center, Yale University, New Haven, CT 06520, USA.
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23
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Majka SM, Miller HL, Helm KM, Acosta AS, Childs CR, Kong R, Klemm DJ. Analysis and isolation of adipocytes by flow cytometry. Methods Enzymol 2014; 537:281-96. [PMID: 24480352 DOI: 10.1016/b978-0-12-411619-1.00015-x] [Citation(s) in RCA: 45] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Analysis and isolation of adipocytes via flow cytometry is particularly useful to study their biology. However, the adoption of this technology has often been hampered by the presence of stromal/vascular cells in adipocyte fractions prepared from collagenase-digested adipose tissue. Here, we describe a multistep staining method and gating strategy that effectively excludes stromal contaminants. Initially, we set a gate optimized to the size and internal complexity of adipocytes. Exclusion of cell aggregates is then performed based on fluorescence of a nuclear stain followed by positive selection to collect only those cell events containing lipid droplets. Lastly, negative selection of cells expressing stromal or vascular lineage markers removes any remaining stromal contaminants. These procedures are applicable to simple analysis of adipocytes and their subcellular constituents by flow cytometry as well as isolation of adipocytes by flow sorting.
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Affiliation(s)
- Susan M Majka
- Department of Medicine, Vanderbilt University, Nashville, Tennessee, USA
| | - Heidi L Miller
- Department of Medicine, University of Colorado Anschutz Medical Campus, Aurora, Colorado, USA
| | - Karen M Helm
- Cancer Center Flow Cytometry Core, University of Colorado Anschutz Medical Campus, Aurora, Colorado, USA
| | - Alistaire S Acosta
- Cancer Center Flow Cytometry Core, University of Colorado Anschutz Medical Campus, Aurora, Colorado, USA
| | - Christine R Childs
- Cancer Center Flow Cytometry Core, University of Colorado Anschutz Medical Campus, Aurora, Colorado, USA
| | | | - Dwight J Klemm
- Department of Medicine, University of Colorado Anschutz Medical Campus, Aurora, Colorado, USA.
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24
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Lee YH, Mottillo EP, Granneman JG. Adipose tissue plasticity from WAT to BAT and in between. Biochim Biophys Acta Mol Basis Dis 2013; 1842:358-69. [PMID: 23688783 DOI: 10.1016/j.bbadis.2013.05.011] [Citation(s) in RCA: 149] [Impact Index Per Article: 13.5] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2013] [Revised: 04/21/2013] [Accepted: 05/06/2013] [Indexed: 01/09/2023]
Abstract
Adipose tissue plays an essential role in regulating energy balance through its metabolic, cellular and endocrine functions. Adipose tissue has been historically classified into anabolic white adipose tissue and catabolic brown adipose tissue. An explosion of new data, however, points to the remarkable heterogeneity among the cells types that can become adipocytes, as well as the inherent metabolic plasticity of mature cells. These data indicate that targeting cellular and metabolic plasticity of adipose tissue might provide new avenues for treatment of obesity-related diseases. This review will discuss the developmental origins of adipose tissue, the cellular complexity of adipose tissues, and the identification of progenitors that contribute to adipogenesis throughout development. We will touch upon the pathological remodeling of adipose tissue and discuss how our understanding of adipose tissue remodeling can uncover new therapeutic targets. This article is part of a Special Issue entitled: Modulation of Adipose Tissue in Health and Disease.
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Affiliation(s)
- Yun-Hee Lee
- Center for Integrative Metabolic and Endocrine Research, Wayne State University School of Medicine, Detroit, MI 48201, USA
| | - Emilio P Mottillo
- Center for Integrative Metabolic and Endocrine Research, Wayne State University School of Medicine, Detroit, MI 48201, USA
| | - James G Granneman
- Center for Integrative Metabolic and Endocrine Research, Wayne State University School of Medicine, Detroit, MI 48201, USA.
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