1
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Dave M, Dev A, Somoza RA, Zhao N, Viswanath S, Mina PR, Chirra P, Obmann VC, Mahabeleshwar GH, Menghini P, Durbin-Johnson B, Nolta J, Soto C, Osme A, Khuat LT, Murphy WJ, Caplan AI, Cominelli F. MSCs mediate long-term efficacy in a Crohn's disease model by sustained anti-inflammatory macrophage programming via efferocytosis. NPJ Regen Med 2024; 9:6. [PMID: 38245543 PMCID: PMC10799947 DOI: 10.1038/s41536-024-00347-1] [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: 06/21/2023] [Accepted: 01/04/2024] [Indexed: 01/22/2024] Open
Abstract
Mesenchymal stem cells (MSCs) are novel therapeutics for the treatment of Crohn's disease. However, their mechanism of action is unclear, especially in disease-relevant chronic models of inflammation. Thus, we used SAMP-1/YitFc (SAMP), a chronic and spontaneous murine model of small intestinal inflammation, to study the therapeutic effects and mechanism of action of human bone marrow-derived MSCs (hMSC). hMSC dose-dependently inhibited naïve T lymphocyte proliferation via prostaglandin E2 (PGE2) secretion and reprogrammed macrophages to an anti-inflammatory phenotype. We found that the hMSCs promoted mucosal healing and immunologic response early after administration in SAMP when live hMSCs are present (until day 9) and resulted in a complete response characterized by mucosal, histological, immunologic, and radiological healing by day 28 when no live hMSCs are present. hMSCs mediate their effect via modulation of T cells and macrophages in the mesentery and mesenteric lymph nodes (mLN). Sc-RNAseq confirmed the anti-inflammatory phenotype of macrophages and identified macrophage efferocytosis of apoptotic hMSCs as a mechanism that explains their long-term efficacy. Taken together, our findings show that hMSCs result in healing and tissue regeneration in a chronic model of small intestinal inflammation and despite being short-lived, exert long-term effects via sustained anti-inflammatory programming of macrophages via efferocytosis.
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Affiliation(s)
- Maneesh Dave
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, UC Davis Medical Center, University of California Davis School of Medicine, Sacramento, CA, USA.
- Institute for Regenerative Cures, University of California Davis School of Medicine, Sacramento, CA, USA.
| | - Atul Dev
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, UC Davis Medical Center, University of California Davis School of Medicine, Sacramento, CA, USA
| | - Rodrigo A Somoza
- Skeletal Research Center, Department of Biology, Case Western Reserve University, Cleveland, OH, USA
| | - Nan Zhao
- Division of Gastroenterology and Liver Disease, University Hospitals, Case Western Reserve University, Cleveland, OH, USA
| | - Satish Viswanath
- Department of Biomedical Engineering, Case Western Reserve University, Cleveland, OH, USA
| | - Pooja Rani Mina
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, UC Davis Medical Center, University of California Davis School of Medicine, Sacramento, CA, USA
| | - Prathyush Chirra
- Department of Biomedical Engineering, Case Western Reserve University, Cleveland, OH, USA
| | - Verena Carola Obmann
- Department of Diagnostic, Interventional and Pediatric Radiology, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland
| | - Ganapati H Mahabeleshwar
- Department of Pathology, School of Medicine, Case Western Reserve University, Cleveland, OH, USA
| | - Paola Menghini
- Division of Gastroenterology and Liver Disease, University Hospitals, Case Western Reserve University, Cleveland, OH, USA
| | - Blythe Durbin-Johnson
- Division of Biostatistics, Department of Public Health Sciences, University of California Davis School of Medicine, Sacramento, CA, USA
| | - Jan Nolta
- Institute for Regenerative Cures, University of California Davis School of Medicine, Sacramento, CA, USA
- Division of Malignant Hematology/Cell and Marrow Transplantation, Department of Internal Medicine, University of California Davis School of Medicine, Sacramento, USA
| | - Christopher Soto
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, UC Davis Medical Center, University of California Davis School of Medicine, Sacramento, CA, USA
| | - Abdullah Osme
- Department of Pathology, School of Medicine, Case Western Reserve University, Cleveland, OH, USA
| | - Lam T Khuat
- Department of Dermatology, University of California Davis School of Medicine, Sacramento, CA, USA
| | - William J Murphy
- Division of Malignant Hematology/Cell and Marrow Transplantation, Department of Internal Medicine, University of California Davis School of Medicine, Sacramento, USA
- Department of Dermatology, University of California Davis School of Medicine, Sacramento, CA, USA
| | - Arnold I Caplan
- Skeletal Research Center, Department of Biology, Case Western Reserve University, Cleveland, OH, USA
| | - Fabio Cominelli
- Division of Gastroenterology and Liver Disease, University Hospitals, Case Western Reserve University, Cleveland, OH, USA
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Ghorbani P, Kim SY, Smith TKT, Minarrieta L, Robert-Gostlin V, Kilgour MK, Ilijevska M, Alecu I, Snider SA, Margison KD, Nunes JRC, Woo D, Pember C, O’Dwyer C, Ouellette J, Kotchetkov P, St-Pierre J, Bennett SAL, Lacoste B, Blais A, Nair MG, Fullerton MD. Choline metabolism underpins macrophage IL-4 polarization and RELMα up-regulation in helminth infection. PLoS Pathog 2023; 19:e1011658. [PMID: 37747879 PMCID: PMC10553840 DOI: 10.1371/journal.ppat.1011658] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2022] [Revised: 10/05/2023] [Accepted: 09/05/2023] [Indexed: 09/27/2023] Open
Abstract
Type 2 cytokines like IL-4 are hallmarks of helminth infection and activate macrophages to limit immunopathology and mediate helminth clearance. In addition to cytokines, nutrients and metabolites critically influence macrophage polarization. Choline is an essential nutrient known to support normal macrophage responses to lipopolysaccharide; however, its function in macrophages polarized by type 2 cytokines is unknown. Using murine IL-4-polarized macrophages, targeted lipidomics revealed significantly elevated levels of phosphatidylcholine, with select changes to other choline-containing lipid species. These changes were supported by the coordinated up-regulation of choline transport compared to naïve macrophages. Pharmacological inhibition of choline metabolism significantly suppressed several mitochondrial transcripts and dramatically inhibited select IL-4-responsive transcripts, most notably, Retnla. We further confirmed that blocking choline metabolism diminished IL-4-induced RELMα (encoded by Retnla) protein content and secretion and caused a dramatic reprogramming toward glycolytic metabolism. To better understand the physiological implications of these observations, naïve or mice infected with the intestinal helminth Heligmosomoides polygyrus were treated with the choline kinase α inhibitor, RSM-932A, to limit choline metabolism in vivo. Pharmacological inhibition of choline metabolism lowered RELMα expression across cell-types and tissues and led to the disappearance of peritoneal macrophages and B-1 lymphocytes and an influx of infiltrating monocytes. The impaired macrophage activation was associated with some loss in optimal immunity to H. polygyrus, with increased egg burden. Together, these data demonstrate that choline metabolism is required for macrophage RELMα induction, metabolic programming, and peritoneal immune homeostasis, which could have important implications in the context of other models of infection or cancer immunity.
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Affiliation(s)
- Peyman Ghorbani
- Department of Biochemistry, Microbiology and Immunology, Faculty of Medicine, University of Ottawa, Ottawa, Ontario, Canada
- Centre for Infection, Immunity and Inflammation, University of Ottawa, Ottawa, Ontario, Canada
- Ottawa Institute of Systems Biology, University of Ottawa, Ottawa, Ontario, Canada
| | - Sang Yong Kim
- Division of Biomedical Sciences, School of Medicine, University of California Riverside, Riverside, California, United States of America
| | - Tyler K. T. Smith
- Department of Biochemistry, Microbiology and Immunology, Faculty of Medicine, University of Ottawa, Ottawa, Ontario, Canada
- Centre for Infection, Immunity and Inflammation, University of Ottawa, Ottawa, Ontario, Canada
- Ottawa Institute of Systems Biology, University of Ottawa, Ottawa, Ontario, Canada
| | - Lucía Minarrieta
- Department of Biochemistry, Microbiology and Immunology, Faculty of Medicine, University of Ottawa, Ottawa, Ontario, Canada
- Centre for Infection, Immunity and Inflammation, University of Ottawa, Ottawa, Ontario, Canada
- Ottawa Institute of Systems Biology, University of Ottawa, Ottawa, Ontario, Canada
| | - Victoria Robert-Gostlin
- Department of Biochemistry, Microbiology and Immunology, Faculty of Medicine, University of Ottawa, Ottawa, Ontario, Canada
- Centre for Infection, Immunity and Inflammation, University of Ottawa, Ottawa, Ontario, Canada
- Ottawa Institute of Systems Biology, University of Ottawa, Ottawa, Ontario, Canada
| | - Marisa K. Kilgour
- Department of Biochemistry, Microbiology and Immunology, Faculty of Medicine, University of Ottawa, Ottawa, Ontario, Canada
- Centre for Infection, Immunity and Inflammation, University of Ottawa, Ottawa, Ontario, Canada
| | - Maja Ilijevska
- Department of Biochemistry, Microbiology and Immunology, Faculty of Medicine, University of Ottawa, Ottawa, Ontario, Canada
- Centre for Infection, Immunity and Inflammation, University of Ottawa, Ottawa, Ontario, Canada
| | - Irina Alecu
- Department of Biochemistry, Microbiology and Immunology, Faculty of Medicine, University of Ottawa, Ottawa, Ontario, Canada
- Centre for Infection, Immunity and Inflammation, University of Ottawa, Ottawa, Ontario, Canada
- Ottawa Institute of Systems Biology, University of Ottawa, Ottawa, Ontario, Canada
| | - Shayne A. Snider
- Department of Biochemistry, Microbiology and Immunology, Faculty of Medicine, University of Ottawa, Ottawa, Ontario, Canada
| | - Kaitlyn D. Margison
- Department of Biochemistry, Microbiology and Immunology, Faculty of Medicine, University of Ottawa, Ottawa, Ontario, Canada
| | - Julia R. C. Nunes
- Department of Biochemistry, Microbiology and Immunology, Faculty of Medicine, University of Ottawa, Ottawa, Ontario, Canada
- Centre for Infection, Immunity and Inflammation, University of Ottawa, Ottawa, Ontario, Canada
- Ottawa Institute of Systems Biology, University of Ottawa, Ottawa, Ontario, Canada
| | - Daniel Woo
- Division of Biomedical Sciences, School of Medicine, University of California Riverside, Riverside, California, United States of America
| | - Ciara Pember
- Department of Biochemistry, Microbiology and Immunology, Faculty of Medicine, University of Ottawa, Ottawa, Ontario, Canada
- Centre for Infection, Immunity and Inflammation, University of Ottawa, Ottawa, Ontario, Canada
| | - Conor O’Dwyer
- Department of Biochemistry, Microbiology and Immunology, Faculty of Medicine, University of Ottawa, Ottawa, Ontario, Canada
- Centre for Infection, Immunity and Inflammation, University of Ottawa, Ottawa, Ontario, Canada
- Ottawa Institute of Systems Biology, University of Ottawa, Ottawa, Ontario, Canada
| | - Julie Ouellette
- Neuroscience Program, Ottawa Hospital Research Institute, Ottawa, Ontario, Canada
- Department of Cellular and Molecular Medicine, Faculty of Medicine, University of Ottawa, Ottawa, Ontario, Canada
| | - Pavel Kotchetkov
- Neuroscience Program, Ottawa Hospital Research Institute, Ottawa, Ontario, Canada
- Department of Cellular and Molecular Medicine, Faculty of Medicine, University of Ottawa, Ottawa, Ontario, Canada
| | - Julie St-Pierre
- Department of Biochemistry, Microbiology and Immunology, Faculty of Medicine, University of Ottawa, Ottawa, Ontario, Canada
- Centre for Infection, Immunity and Inflammation, University of Ottawa, Ottawa, Ontario, Canada
- Ottawa Institute of Systems Biology, University of Ottawa, Ottawa, Ontario, Canada
| | - Steffany A. L. Bennett
- Department of Biochemistry, Microbiology and Immunology, Faculty of Medicine, University of Ottawa, Ottawa, Ontario, Canada
- Centre for Infection, Immunity and Inflammation, University of Ottawa, Ottawa, Ontario, Canada
- Ottawa Institute of Systems Biology, University of Ottawa, Ottawa, Ontario, Canada
- Centre for Catalysis Research and Innovation, University of Ottawa, Ottawa, Ontario, Canada
- University of Ottawa Brain and Mind Institute, University of Ottawa, Ottawa, Ontario, Canada
| | - Baptiste Lacoste
- Neuroscience Program, Ottawa Hospital Research Institute, Ottawa, Ontario, Canada
- Department of Cellular and Molecular Medicine, Faculty of Medicine, University of Ottawa, Ottawa, Ontario, Canada
- University of Ottawa Brain and Mind Institute, University of Ottawa, Ottawa, Ontario, Canada
| | - Alexandre Blais
- Department of Biochemistry, Microbiology and Immunology, Faculty of Medicine, University of Ottawa, Ottawa, Ontario, Canada
- Centre for Infection, Immunity and Inflammation, University of Ottawa, Ottawa, Ontario, Canada
- Ottawa Institute of Systems Biology, University of Ottawa, Ottawa, Ontario, Canada
- University of Ottawa Brain and Mind Institute, University of Ottawa, Ottawa, Ontario, Canada
- Éric Poulin Centre for Neuromuscular Disease, Ottawa, Ontario, Canada
| | - Meera G. Nair
- Division of Biomedical Sciences, School of Medicine, University of California Riverside, Riverside, California, United States of America
| | - Morgan D. Fullerton
- Department of Biochemistry, Microbiology and Immunology, Faculty of Medicine, University of Ottawa, Ottawa, Ontario, Canada
- Centre for Infection, Immunity and Inflammation, University of Ottawa, Ottawa, Ontario, Canada
- Ottawa Institute of Systems Biology, University of Ottawa, Ottawa, Ontario, Canada
- Centre for Catalysis Research and Innovation, University of Ottawa, Ottawa, Ontario, Canada
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Daggubati V, Vykunta A, Choudhury A, Qadeer Z, Mirchia K, Saulnier O, Zakimi N, Hines K, Paul M, Wang L, Jura N, Xu L, Reiter J, Taylor M, Weiss W, Raleigh D. Hedgehog target genes regulate lipid metabolism to drive basal cell carcinoma and medulloblastoma. RESEARCH SQUARE 2023:rs.3.rs-3058335. [PMID: 37577529 PMCID: PMC10418546 DOI: 10.21203/rs.3.rs-3058335/v1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 08/15/2023]
Abstract
Hedgehog (Hh) signaling is essential for development, homeostasis, and regeneration1. Misactivation of the Hh pathway underlies medulloblastoma, the most common malignant brain tumor in children, and basal cell carcinoma (BCC), the most common cancer in the United States2. Primary cilia regulate Hh signal transduction3, but target genes that drive cell fate decisions in response to ciliary ligands or oncogenic Hh signaling are incompletely understood. Here we define the Hh gene expression program using RNA sequencing of cultured cells treated with ciliary ligands, BCCs from humans, and Hh-associated medulloblastomas from humans and mice (Fig. 1a). To validate our results, we integrate lipidomic mass spectrometry and bacterial metabolite labeling of free sterols with genetic and pharmacologic approaches in cells and mice. Our results reveal novel Hh target genes such as the oxysterol synthase Hsd11β1 and the adipokine Retnla that regulate lipid metabolism to drive cell fate decisions in response to Hh pathway activation. These data provide insights into cellular mechanisms underlying ciliary and oncogenic Hh signaling and elucidate targets to treat Hh-associated cancers.
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Affiliation(s)
| | | | | | | | | | | | | | | | | | | | | | | | - Jeremy Reiter
- Department of Biochemistry and Biophysics, Cardiovascular Research Institute, University of California San Francisco, San Francisco, CA
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Eid SA, Noureldein M, Kim B, Hinder LM, Mendelson FE, Hayes JM, Hur J, Feldman EL. Single-cell RNA-seq uncovers novel metabolic functions of Schwann cells beyond myelination. J Neurochem 2023; 166:367-388. [PMID: 37328915 PMCID: PMC11141588 DOI: 10.1111/jnc.15877] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2023] [Revised: 05/04/2023] [Accepted: 05/30/2023] [Indexed: 06/18/2023]
Abstract
Schwann cells (SCs) support peripheral nerves under homeostatic conditions, independent of myelination, and contribute to damage in prediabetic peripheral neuropathy (PN). Here, we used single-cell RNA sequencing to characterize the transcriptional profiles and intercellular communication of SCs in the nerve microenvironment using the high-fat diet-fed mouse, which mimics human prediabetes and neuropathy. We identified four major SC clusters, myelinating, nonmyelinating, immature, and repair in healthy and neuropathic nerves, in addition to a distinct cluster of nerve macrophages. Myelinating SCs acquired a unique transcriptional profile, beyond myelination, in response to metabolic stress. Mapping SC intercellular communication identified a shift in communication, centered on immune response and trophic support pathways, which primarily impacted nonmyelinating SCs. Validation analyses revealed that neuropathic SCs become pro-inflammatory and insulin resistant under prediabetic conditions. Overall, our study offers a unique resource for interrogating SC function, communication, and signaling in nerve pathophysiology to help inform SC-specific therapies.
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Affiliation(s)
- Stéphanie A. Eid
- Department of Neurology, University of Michigan, Ann Arbor, MI, 48109, USA
| | - Mohamed Noureldein
- Department of Neurology, University of Michigan, Ann Arbor, MI, 48109, USA
| | - Bhumsoo Kim
- Department of Neurology, University of Michigan, Ann Arbor, MI, 48109, USA
| | - Lucy M. Hinder
- Department of Neurology, University of Michigan, Ann Arbor, MI, 48109, USA
| | - Faye E. Mendelson
- Department of Neurology, University of Michigan, Ann Arbor, MI, 48109, USA
| | - John M. Hayes
- Department of Neurology, University of Michigan, Ann Arbor, MI, 48109, USA
| | - Junguk Hur
- Department of Biomedical Sciences, School of Medicine and Health Sciences, University of North Dakota, Grand Forks, ND 58202, USA
| | - Eva L. Feldman
- Department of Neurology, University of Michigan, Ann Arbor, MI, 48109, USA
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5
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Dave M, Dev A, Somoza RA, Zhao N, Viswanath S, Mina PR, Chirra P, Obmann VC, Mahabeleshwar GH, Menghini P, Johnson BD, Nolta J, Soto C, Osme A, Khuat LT, Murphy W, Caplan AI, Cominelli F. Mesenchymal stem cells ameliorate inflammation in an experimental model of Crohn's disease via the mesentery. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2023:2023.05.22.541829. [PMID: 37292753 PMCID: PMC10245893 DOI: 10.1101/2023.05.22.541829] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Objective Mesenchymal stem cells (MSCs) are novel therapeutics for treatment of Crohn's disease. However, their mechanism of action is unclear, especially in disease-relevant chronic models of inflammation. Thus, we used SAMP-1/YitFc, a chronic and spontaneous murine model of small intestinal inflammation, to study the therapeutic effect and mechanism of human bone marrow-derived MSCs (hMSC). Design hMSC immunosuppressive potential was evaluated through in vitro mixed lymphocyte reaction, ELISA, macrophage co-culture, and RT-qPCR. Therapeutic efficacy and mechanism in SAMP were studied by stereomicroscopy, histopathology, MRI radiomics, flow cytometry, RT-qPCR, small animal imaging, and single-cell RNA sequencing (Sc-RNAseq). Results hMSC dose-dependently inhibited naïve T lymphocyte proliferation in MLR via PGE 2 secretion and reprogrammed macrophages to an anti-inflammatory phenotype. hMSC promoted mucosal healing and immunologic response early after administration in SAMP model of chronic small intestinal inflammation when live hMSCs are present (until day 9) and resulted in complete response characterized by mucosal, histological, immunologic, and radiological healing by day 28 when no live hMSCs are present. hMSC mediate their effect via modulation of T cells and macrophages in the mesentery and mesenteric lymph nodes (mLN). Sc-RNAseq confirmed the anti-inflammatory phenotype of macrophages and identified macrophage efferocytosis of apoptotic hMSCs as a mechanism of action that explains their long-term efficacy. Conclusion hMSCs result in healing and tissue regeneration in a chronic model of small intestinal inflammation. Despite being short-lived, exert long-term effects via macrophage reprogramming to an anti-inflammatory phenotype. Data Transparency Statement Single-cell RNA transcriptome datasets are deposited in an online open access repository 'Figshare' (DOI: https://doi.org/10.6084/m9.figshare.21453936.v1 ).
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6
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Li J, Ruggiero-Ruff RE, He Y, Qiu X, Lainez N, Villa P, Godzik A, Coss D, Nair MG. Sexual dimorphism in obesity is governed by RELMα regulation of adipose macrophages and eosinophils. eLife 2023; 12:e86001. [PMID: 37162190 PMCID: PMC10171862 DOI: 10.7554/elife.86001] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2023] [Accepted: 04/18/2023] [Indexed: 05/11/2023] Open
Abstract
Obesity incidence is increasing worldwide with the urgent need to identify new therapeutics. Sex differences in immune cell activation drive obesity-mediated pathologies where males are more susceptible to obesity comorbidities and exacerbated inflammation. Here, we demonstrate that the macrophage-secreted protein RELMα critically protects females against high-fat diet (HFD)-induced obesity. Compared to male mice, serum RELMα levels were higher in both control and HFD-fed females and correlated with frequency of adipose macrophages and eosinophils. RELMα-deficient females gained more weight and had proinflammatory macrophage accumulation and eosinophil loss in the adipose stromal vascular fraction (SVF), while RELMα treatment or eosinophil transfer rescued this phenotype. Single-cell RNA-sequencing of the adipose SVF was performed and identified sex and RELMα-dependent changes. Genes involved in oxygen sensing and iron homeostasis, including hemoglobin and lncRNA Gm47283/Gm21887, correlated with increased obesity, while eosinophil chemotaxis and response to amyloid-beta were protective. Monocyte-to-macrophage transition was also dysregulated in RELMα-deficient animals. Collectively, these studies implicate a RELMα-macrophage-eosinophil axis in sex-specific protection against obesity and uncover new therapeutic targets for obesity.
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Affiliation(s)
- Jiang Li
- Division of Biomedical Sciences, School of Medicine, University of California RiversideRiversideUnited States
| | - Rebecca E Ruggiero-Ruff
- Division of Biomedical Sciences, School of Medicine, University of California RiversideRiversideUnited States
| | - Yuxin He
- Division of Biomedical Sciences, School of Medicine, University of California RiversideRiversideUnited States
| | - Xinru Qiu
- Graduate Program in Genetics, Genomics and Bioinformatics, University of California RiversideRiversideUnited States
| | - Nancy Lainez
- Division of Biomedical Sciences, School of Medicine, University of California RiversideRiversideUnited States
| | - Pedro Villa
- Division of Biomedical Sciences, School of Medicine, University of California RiversideRiversideUnited States
| | - Adam Godzik
- Division of Biomedical Sciences, School of Medicine, University of California RiversideRiversideUnited States
| | - Djurdjica Coss
- Division of Biomedical Sciences, School of Medicine, University of California RiversideRiversideUnited States
| | - Meera G Nair
- Division of Biomedical Sciences, School of Medicine, University of California RiversideRiversideUnited States
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7
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Shi Y, Zhu N, Qiu Y, Tan J, Wang F, Qin L, Dai A. Resistin-like molecules: a marker, mediator and therapeutic target for multiple diseases. Cell Commun Signal 2023; 21:18. [PMID: 36691020 PMCID: PMC9869618 DOI: 10.1186/s12964-022-01032-w] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2022] [Accepted: 12/27/2022] [Indexed: 01/25/2023] Open
Abstract
Resistin-like molecules (RELMs) are highly cysteine-rich proteins, including RELMα, RELMβ, Resistin, and RELMγ. However, RELMs exhibit significant differences in structure, distribution, and function. The expression of RELMs is regulated by various signaling molecules, such as IL-4, IL-13, and their receptors. In addition, RELMs can mediate numerous signaling pathways, including HMGB1/RAGE, IL-4/IL-4Rα, PI3K/Akt/mTOR signaling pathways, and so on. RELMs proteins are involved in wide range of physiological and pathological processes, including inflammatory response, cell proliferation, glucose metabolism, barrier defense, etc., and participate in the progression of numerous diseases such as lung diseases, intestinal diseases, cardiovascular diseases, and cancers. Meanwhile, RELMs can serve as biomarkers, risk predictors, and therapeutic targets for these diseases. An in-depth understanding of the role of RELMs may provide novel targets or strategies for the treatment and prevention of related diseases. Video abstract.
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Affiliation(s)
- Yaning Shi
- Laboratory of Stem Cell Regulation with Chinese Medicine and its Application, Hunan University of Chinese Medicine, Changsha, 410208, Hunan, China
- Science and Technology Innovation Center, Hunan University of Chinese Medicine, Changsha, 410208, Hunan, China
| | - Neng Zhu
- Department of Urology, The First Hospital of Hunan University of Chinese Medicine, Changsha, 410021, Hunan, China
| | - Yun Qiu
- Laboratory of Stem Cell Regulation with Chinese Medicine and its Application, Hunan University of Chinese Medicine, Changsha, 410208, Hunan, China
| | - Junlan Tan
- Hunan Provincial Key Laboratory of Vascular Biology and Translational Medicine, Changsha, 410208, Hunan, China
| | - Feiying Wang
- Hunan Provincial Key Laboratory of Vascular Biology and Translational Medicine, Changsha, 410208, Hunan, China
| | - Li Qin
- Laboratory of Stem Cell Regulation with Chinese Medicine and its Application, Hunan University of Chinese Medicine, Changsha, 410208, Hunan, China.
- Hunan Provincial Key Laboratory of Vascular Biology and Translational Medicine, Changsha, 410208, Hunan, China.
| | - Aiguo Dai
- Hunan Provincial Key Laboratory of Vascular Biology and Translational Medicine, Changsha, 410208, Hunan, China.
- Department of Respiratory Diseases, Medical School, Hunan University of Chinese Medicine, Changsha, 410208, Hunan, China.
- Department of Respiratory Medicine, First Affiliated Hospital, Hunan University of Chinese Medicine, Changsha, 410021, Hunan, China.
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8
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Li J, Ruggiero-Ruff RE, He Y, Qiu X, Lainez NM, Villa PA, Godzik A, Coss D, Nair MG. Sexual dimorphism in obesity is governed by RELMα regulation of adipose macrophages and eosinophils. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2023:2023.01.13.523880. [PMID: 36711654 PMCID: PMC9882128 DOI: 10.1101/2023.01.13.523880] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
Obesity incidence is increasing worldwide with the urgent need to identify new therapeutics. Sex differences in immune cell activation drive obesity-mediated pathologies where males are more susceptible to obesity co-morbidities and exacerbated inflammation. Here, we demonstrate that the macrophage-secreted protein RELMα critically protects females against high fat diet-induced obesity. Compared to male mice, RELMα levels were elevated in both control and high fat dietfed females and correlated with adipose macrophages and eosinophils. RELMα-deficient females gained more weight and had pro-inflammatory macrophage accumulation and eosinophil loss, while both RELMα treatment and eosinophil transfer rescued this phenotype. Single cell RNA-sequencing of the adipose stromal vascular fraction was performed and identified sex and RELMα-dependent changes. Genes involved in oxygen sensing and iron homeostasis, including hemoglobin and lncRNA Gm47283, correlated with increased obesity, while eosinophil chemotaxis and response to amyloid-beta were protective. Monocyte-to-macrophage transition was also dysregulated in RELMα-deficient animals. Collectively, these studies implicate a RELMα-macrophage-eosinophil axis in sex-specific protection against obesity and uncover new therapeutic targets for obesity.
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Affiliation(s)
- Jiang Li
- Division of Biomedical Sciences, School of Medicine, University of California Riverside, Riverside, CA, USA
| | - Rebecca E. Ruggiero-Ruff
- Division of Biomedical Sciences, School of Medicine, University of California Riverside, Riverside, CA, USA
| | - Yuxin He
- Division of Biomedical Sciences, School of Medicine, University of California Riverside, Riverside, CA, USA
| | - Xinru Qiu
- Graduate Program in Genetics, Genomics and Bioinformatics, University of California Riverside, Riverside, CA, USA
| | - Nancy M. Lainez
- Division of Biomedical Sciences, School of Medicine, University of California Riverside, Riverside, CA, USA
| | - Pedro A. Villa
- Division of Biomedical Sciences, School of Medicine, University of California Riverside, Riverside, CA, USA
| | - Adam Godzik
- Division of Biomedical Sciences, School of Medicine, University of California Riverside, Riverside, CA, USA
| | - Djurdjica Coss
- Division of Biomedical Sciences, School of Medicine, University of California Riverside, Riverside, CA, USA
| | - Meera G. Nair
- Division of Biomedical Sciences, School of Medicine, University of California Riverside, Riverside, CA, USA
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9
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Attenuation of Hyperlipidemia by Medicinal Formulations of Emblica officinalis Synergized with Nanotechnological Approaches. BIOENGINEERING (BASEL, SWITZERLAND) 2023; 10:bioengineering10010064. [PMID: 36671636 PMCID: PMC9854976 DOI: 10.3390/bioengineering10010064] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/15/2022] [Revised: 12/30/2022] [Accepted: 01/03/2023] [Indexed: 01/06/2023]
Abstract
The ayurvedic herb Emblica officinalis (E. officinalis) is a gift to mankind to acquire a healthy lifestyle. It has great therapeutic and nutritional importance. Emblica officinalis, also known as Indian gooseberry or Amla, is a member of the Euphorbiaceae family. Amla is beneficial for treating illnesses in all its forms. The most crucial component is a fruit, which is also the most common. It is used frequently in Indian medicine as a restorative, diuretic, liver tonic, refrigerant, stomachic, laxative, antipyretic, hair tonic, ulcer preventive, and for the common cold and fever. Hyperlipidemia is also known as high cholesterol or an increase in one or more lipid-containing blood proteins. Various phytocompounds, including polyphenols, vitamins, amino acids, fixed oils, and flavonoids, are present in the various parts of E. officinalis. E. officinalis has been linked to a variety of pharmacological effects in earlier studies, including hepatoprotective, immunomodulatory, antimicrobial, radioprotective, and hyperlipidemic effects. The amla-derived active ingredients and food products nevertheless encounter challenges such as instability and interactions with other food matrices. Considering the issue from this perspective, food component nanoencapsulation is a young and cutting-edge field for controlled and targeted delivery with a range of preventative activities. The nanoformulation of E. officinalis facilitates the release of active components or food ingredients, increased bioaccessibility, enhanced therapeutic activities, and digestion in the human body. Accordingly, the current review provides a summary of the phytoconstituents of E. officinalis, pharmacological actions detailing the plant E. officinalis's traditional uses, and especially hyperlipidemic activity. Correspondingly, the article describes the uses of nanotechnology in amla therapeutics and functional ingredients.
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Li W, Sun Z, Wu M, Deng Z, Zheng M, Kuang Z, Liu Y, He G. Deficiency of coiled-coil domain containing 80 increases plasma cholesterol by decreasing fecal sterols excretion in hypercholesterolemic mice. J Nutr Biochem 2021; 98:108868. [PMID: 34563664 DOI: 10.1016/j.jnutbio.2021.108868] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2020] [Revised: 06/16/2021] [Accepted: 09/20/2021] [Indexed: 11/26/2022]
Abstract
Disorders in cholesterol and bile acid metabolism have been acknowledged as critical in pathogenesis of hypercholesterolemia. Coiled-coil domain containing 80 (CCDC80) has been closely linked to lipid homeostasis in mice, with its role in cholesterol metabolism yet to be fully elucidated. This study aims to uncover the regulatory mechanisms of CCDC80 in diet-induced hypercholesterolemia. We generated a CCDC80 knockout (CCDC80-/-) model in C57BL/6 mouse. The initial transcriptional and metabolic consequences of removing CCDC80 were accessed at baseline by gene expression microarrays and gas chromatography-mass spectrometry / ultra-high-performance liquid chromatography-quadrupole time-of-flight mass spectrometry, respectively. The hepatic cholesterol was investigated in both CCDC80+/+ and CCDC80-/- male mice at baseline and after feeding a high-cholesterol diet for 12 weeks. The regulatory effects of CCDC80 on gene expressions and protein masses were measured by RT-qPCR and western blot, respectively. At baseline, the KEGG pathway enrichment analysis combining metabolomics, lipidomics and transcriptomics, revealed a down-regulation of hepatic bile acid biosynthesis by CCDC80-knockout, especially for primary bile acids. In the hypercholesterolemic models, our results showed that deficiency of CCDC80 increased plasma and liver cholesterol levels, but decreased fecal neutral and acidic sterols excretion in mice. Mechanistically, we found that such effects were partly mediated by attenuating the alternative pathway of bile acid synthesis catalyzed by oxysterol 7-alpha-hydroxylase (CYP7B1). In conclusion, our results suggest CCDC80 as a novel modulator of cholesterol homeostasis in male mice. Deficiency of CCDC80 could further impair fecal sterols excretion in diet-induced hypercholesterolemia.
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Affiliation(s)
- Wenyun Li
- School of Public Health / Key Laboratory of Public Health Safety of Ministry of Education, Fudan University, Shanghai, China
| | - Zhuo Sun
- School of Public Health / Key Laboratory of Public Health Safety of Ministry of Education, Fudan University, Shanghai, China
| | - Min Wu
- School of Public Health / Key Laboratory of Public Health Safety of Ministry of Education, Fudan University, Shanghai, China
| | - Zequn Deng
- School of Public Health / Key Laboratory of Public Health Safety of Ministry of Education, Fudan University, Shanghai, China
| | - Mengman Zheng
- School of Public Health / Key Laboratory of Public Health Safety of Ministry of Education, Fudan University, Shanghai, China
| | - Zhichao Kuang
- School of Public Health / Key Laboratory of Public Health Safety of Ministry of Education, Fudan University, Shanghai, China
| | - Yuwei Liu
- School of Public Health / Key Laboratory of Public Health Safety of Ministry of Education, Fudan University, Shanghai, China.
| | - Gengsheng He
- School of Public Health / Key Laboratory of Public Health Safety of Ministry of Education, Fudan University, Shanghai, China.
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Lv M, Liu W. Hypoxia-Induced Mitogenic Factor: A Multifunctional Protein Involved in Health and Disease. Front Cell Dev Biol 2021; 9:691774. [PMID: 34336840 PMCID: PMC8319639 DOI: 10.3389/fcell.2021.691774] [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] [Subscribe] [Scholar Register] [Received: 04/07/2021] [Accepted: 06/23/2021] [Indexed: 11/13/2022] Open
Abstract
Hypoxia-induced mitogenic factor (HIMF), also known as resistin-like molecule α (RELMα) or found in inflammatory zone 1 (FIZZ1) is a member of the RELM protein family expressed in mice. It is involved in a plethora of physiological processes, including mitogenesis, angiogenesis, inflammation, and vasoconstriction. HIMF expression can be stimulated under pathological conditions and this plays a critical role in pulmonary, cardiovascular and metabolic disorders. The present review summarizes the molecular characteristics, and the physiological and pathological roles of HIMF in normal and diseased conditions. The potential clinical significance of these findings for human is also discussed.
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Affiliation(s)
- Moyang Lv
- Department of Gastroenterology, Xinqiao Hospital, Third Military Medical University, Chongqing, China
| | - Wenjuan Liu
- Department of Pathophysiology, Health Science Center, Shenzhen University, Shenzhen, China
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Kim YS, Cho HH, Cho DI, Jeong HY, Lim SY, Jun JH, Kim MR, Kang BG, Cho M, Kang HJ, Kang WS, Oh GT, Ahn Y. The adipokine Retnla deficiency increases responsiveness to cardiac repair through adiponectin-rich bone marrow cells. Cell Death Dis 2021; 12:307. [PMID: 33753732 PMCID: PMC7985519 DOI: 10.1038/s41419-021-03593-z] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2020] [Accepted: 01/19/2021] [Indexed: 02/07/2023]
Abstract
Resistin-like alpha (Retnla) is a member of the resistin family and known to modulate fibrosis and inflammation. Here, we investigated the role of Retnla in the cardiac injury model. Myocardial infarction (MI) was induced in wild type (WT), Retnla knockout (KO), and Retnla transgenic (TG) mice. Cardiac function was assessed by echocardiography and was significantly preserved in the KO mice, while worsened in the TG group. Angiogenesis was substantially increased in the KO mice, and cardiomyocyte apoptosis was markedly suppressed in the KO mice. By Retnla treatment, the expression of p21 and the ratio of Bax to Bcl2 were increased in cardiomyocytes, while decreased in cardiac fibroblasts. Interestingly, the numbers of cardiac macrophages and unsorted bone marrow cells (UBCs) were higher in the KO mice than in the WT mice. Besides, phosphorylated histone H3(+) cells were more frequent in bone marrow of KO mice. Moreover, adiponectin in UBCs was notably higher in the KO mice compared with WT mice. In an adoptive transfer study, UBCs were isolated from KO mice to transplant to the WT infarcted heart. Cardiac function was better in the KO-UBCs transplanted group in the WT-UBCs transplanted group. Taken together, proliferative and adiponectin-rich bone marrow niche was associated with substantial cardiac recovery by suppression of cardiac apoptosis and proliferation of cardiac fibroblast.
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Affiliation(s)
- Yong Sook Kim
- Cell Regeneration Research Center, Chonnam National University Hospital, Gwangju, Republic of Korea.,Biomedical Research Center, Chonnam National University Hospital, Gwangju, Republic of Korea
| | - Hyang Hee Cho
- Cell Regeneration Research Center, Chonnam National University Hospital, Gwangju, Republic of Korea.,Department of Molecular Medicine, Graduate School, Chonnam National University, Gwangju, Republic of Korea
| | - Dong Im Cho
- Cell Regeneration Research Center, Chonnam National University Hospital, Gwangju, Republic of Korea.,Biomedical Research Center, Chonnam National University Hospital, Gwangju, Republic of Korea
| | - Hye-Yun Jeong
- Cell Regeneration Research Center, Chonnam National University Hospital, Gwangju, Republic of Korea
| | - Soo Yeon Lim
- Cell Regeneration Research Center, Chonnam National University Hospital, Gwangju, Republic of Korea
| | - Ju Hee Jun
- Cell Regeneration Research Center, Chonnam National University Hospital, Gwangju, Republic of Korea
| | - Mi Ra Kim
- Cell Regeneration Research Center, Chonnam National University Hospital, Gwangju, Republic of Korea
| | - Bo Gyeong Kang
- Cell Regeneration Research Center, Chonnam National University Hospital, Gwangju, Republic of Korea
| | - Meeyoung Cho
- Cell Regeneration Research Center, Chonnam National University Hospital, Gwangju, Republic of Korea
| | - Hye-Jin Kang
- Cell Regeneration Research Center, Chonnam National University Hospital, Gwangju, Republic of Korea
| | - Wan Seok Kang
- Cell Regeneration Research Center, Chonnam National University Hospital, Gwangju, Republic of Korea
| | - Goo Taeg Oh
- Department of Life Sciences, Ewha Womans University, Seoul, Republic of Korea
| | - Youngkeun Ahn
- Cell Regeneration Research Center, Chonnam National University Hospital, Gwangju, Republic of Korea. .,Department of Cardiovascular Medicine, Chonnam National University Medical School, Gwangju, Republic of Korea. .,Department of Cardiology, Chonnam National University Hospital, Gwangju, Republic of Korea.
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Summers KM, Bush SJ, Hume DA. Network analysis of transcriptomic diversity amongst resident tissue macrophages and dendritic cells in the mouse mononuclear phagocyte system. PLoS Biol 2020; 18:e3000859. [PMID: 33031383 PMCID: PMC7575120 DOI: 10.1371/journal.pbio.3000859] [Citation(s) in RCA: 74] [Impact Index Per Article: 18.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2020] [Revised: 10/20/2020] [Accepted: 09/08/2020] [Indexed: 02/07/2023] Open
Abstract
The mononuclear phagocyte system (MPS) is a family of cells including progenitors, circulating blood monocytes, resident tissue macrophages, and dendritic cells (DCs) present in every tissue in the body. To test the relationships between markers and transcriptomic diversity in the MPS, we collected from National Center for Biotechnology Information Gene Expression Omnibus (NCBI-GEO) a total of 466 quality RNA sequencing (RNA-seq) data sets generated from mouse MPS cells isolated from bone marrow, blood, and multiple tissues. The primary data were randomly downsized to a depth of 10 million reads and requantified. The resulting data set was clustered using the network analysis tool BioLayout. A sample-to-sample matrix revealed that MPS populations could be separated based upon tissue of origin. Cells identified as classical DC subsets, cDC1s and cDC2s, and lacking Fcgr1 (encoding the protein CD64) were contained within the MPS cluster, no more distinct than other MPS cells. A gene-to-gene correlation matrix identified large generic coexpression clusters associated with MPS maturation and innate immune function. Smaller coexpression gene clusters, including the transcription factors that drive them, showed higher expression within defined isolated cells, including monocytes, macrophages, and DCs isolated from specific tissues. They include a cluster containing Lyve1 that implies a function in endothelial cell (EC) homeostasis, a cluster of transcripts enriched in intestinal macrophages, and a generic lymphoid tissue cDC cluster associated with Ccr7. However, transcripts encoding Adgre1, Itgax, Itgam, Clec9a, Cd163, Mertk, Mrc1, Retnla, and H2-a/e (encoding class II major histocompatibility complex [MHC] proteins) and many other proposed macrophage subset and DC lineage markers each had idiosyncratic expression profiles. Coexpression of immediate early genes (for example, Egr1, Fos, Dusp1) and inflammatory cytokines and chemokines (tumour necrosis factor [Tnf], Il1b, Ccl3/4) indicated that all tissue disaggregation and separation protocols activate MPS cells. Tissue-specific expression clusters indicated that all cell isolation procedures also co-purify other unrelated cell types that may interact with MPS cells in vivo. Comparative analysis of RNA-seq and single-cell RNA-seq (scRNA-seq) data from the same lung cell populations indicated that MPS heterogeneity implied by global cluster analysis may be even greater at a single-cell level. This analysis highlights the power of large data sets to identify the diversity of MPS cellular phenotypes and the limited predictive value of surface markers to define lineages, functions, or subpopulations.
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Affiliation(s)
- Kim M. Summers
- Mater Research Institute-University of Queensland, Translational Research Institute, Brisbane, Queensland, Australia
| | - Stephen J. Bush
- Nuffield Department of Clinical Medicine, John Radcliffe Hospital, University of Oxford, Oxford, United Kingdom
| | - David A. Hume
- Mater Research Institute-University of Queensland, Translational Research Institute, Brisbane, Queensland, Australia
- * E-mail:
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Nagala M, Crocker PR. Towards understanding the cell surface phenotype, metabolic properties and immune functions of resident macrophages of the peritoneal cavity and splenic red pulp using high resolution quantitative proteomics. Wellcome Open Res 2020. [DOI: 10.12688/wellcomeopenres.16061.1] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Background:Resident macrophages (Mϕs) are distributed throughout the body and are important for maintaining tissue homeostasis and for defence against infections. Tissue Mϕs are highly adapted to their microenvironment and thought to mediate tissue-specific functions involving metabolism and immune defence that are not fully elucidated. Methods:We have used high resolution quantitative proteomics to gain insights into the functions of two types of resident tissue Mϕs: peritoneal cavity Mϕs and splenic red pulp Mϕs. The cellular expression levels of many proteins were validated by flow cytometry and were consistently in agreement with the proteomics data.Results:Peritoneal and splenic red pulp macrophages displayed major differences in cell surface phenotype reflecting their adaptation to different tissue microenvironments and tissue-specific functions. Peritoneal Mϕs were shown to be enriched in a number of key enzymes and metabolic pathways normally associated with the liver, such as metabolism of fructose, detoxification, nitrogen homeostasis and the urea cycle. Supporting these observations, we show that peritoneal Mϕs are able to utilise glutamine and glutamate which are rich in peritoneum for urea generation. In comparison, splenic red pulp Mϕs were enriched in proteins important for adaptive immunity such as antigen presenting MHC molecules, in addition to proteins required for erythrocyte homeostasis and iron turnover. We also show that these tissue Mϕs may utilise carbon and nitrogen substrates for different metabolic fates to support distinct tissue-specific roles.Conclusions:This study provides new insights into the functions of tissue Mϕs in immunity and homeostasis. The comprehensive proteomics data sets are a valuable resource for biologists and immunologists.
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Kim J, Choi A, Kwon YH. Maternal Protein Restriction Altered Insulin Resistance and Inflammation-Associated Gene Expression in Adipose Tissue of Young Adult Mouse Offspring in Response to a High-Fat Diet. Nutrients 2020; 12:nu12041103. [PMID: 32316103 PMCID: PMC7230574 DOI: 10.3390/nu12041103] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2020] [Revised: 04/09/2020] [Accepted: 04/14/2020] [Indexed: 12/27/2022] Open
Abstract
Maternal protein restriction is associated with increased risk of insulin resistance and inflammation in adulthood offspring. Here, we investigated whether maternal protein restriction could alter the risk of metabolic syndrome in postweaning high-fat (HF)-diet-challenged offspring, with focus on epididymal adipose tissue gene expression profile. Female ICR mice were fed a control (C) or a low-protein (LP) diet for two weeks before mating and throughout gestation and lactation, and their male offspring were fed an HF diet for 22 weeks (C/HF and LP/HF groups). A subset of offspring of control dams was fed a low-fat control diet (C/C group). In response to postweaning HF diet, serum insulin level and the homeostasis model assessment of insulin resistance (HOMA-IR) were increased in control offspring. Maternal LP diet decreased HOMA-IR and adipose tissue inflammation, and increased serum adiponectin level in the HF-diet-challenged offspring. Accordingly, functional analysis revealed that differentially expressed genes (DEGs) enriched in cytokine production were downregulated in the LP/HF group compared to the C/HF group. We also observed the several annotated gene ontology terms associated with innate immunity and phagocytosis in down-regulated DEGs between LP/HF and C/C groups. In conclusion, maternal protein restriction alleviated insulin resistance and inflammation in young offspring mice fed a HF diet but may impair development of immune system in offspring.
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Affiliation(s)
- Juhae Kim
- Department of Food and Nutrition, Seoul National University, Seoul 08826, Korea; (J.K.); (A.C.)
| | - Alee Choi
- Department of Food and Nutrition, Seoul National University, Seoul 08826, Korea; (J.K.); (A.C.)
| | - Young Hye Kwon
- Department of Food and Nutrition, Seoul National University, Seoul 08826, Korea; (J.K.); (A.C.)
- Research Institute of Human Ecology, Seoul National University, Seoul 08826, Korea
- Correspondence: ; Tel.: +82-2-880-6833
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Verma S, Gupta V, Khosla A, Kumar S, Arya S. High performance asymmetric supercapacitor based on vertical nanowire arrays of a novel Ni@Co-Fe LDH core@shell as negative and Ni(OH) 2 as positive electrode. NANOTECHNOLOGY 2020; 31:245401. [PMID: 32109899 DOI: 10.1088/1361-6528/ab7b07] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
An efficient synthesis of the electrode material with abundant active sites is imperative for obtaining a flexible supercapacitor with excellent electrochemical performance. Herein, a novel flexible Ni@Co-Fe LDH core-shell nanowires supercapacitor negative electrode is synthesized using polycarbonate membrane on a copper substrate via an electrochemical deposition technique. The synthesized battery-type negative electrode exhibits remarkable specific capacitance of 1289 F g-1 at 1 A g-1 and excellent cycling stability with 76.66% capacitive retention after 5000 cycles. Furthermore, the Ni(OH)2//Ni@Co-Fe LDH nanowires based asymmetric supercapacitor exhibits excellent cycling stability of 90.49% after 1000 cycles with a highest energy density of 68 Wh kg-1 at 0.38 KW kg-1, and a good energy density of 31.8 Wh kg-1 is still attained at a high power density of 6 KW kg-1. For practical demonstration, a white LED of 3.3 V is lit by using two asymmetrical supercapacitor devices connected in series. The device offers a favorable and effective pathway for advanced energy storage.
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Affiliation(s)
- Sonali Verma
- Department of Physics, University of Jammu, Jammu, Jammu and Kashmir-180006, India
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Lee M. Research trends in obesity & obesogenic environments in Korea. Nutr Res Pract 2019; 13:461-472. [PMID: 31814921 PMCID: PMC6883237 DOI: 10.4162/nrp.2019.13.6.461] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2019] [Revised: 08/22/2019] [Accepted: 10/22/2019] [Indexed: 12/02/2022] Open
Abstract
BACKGROUND/OBJECTIVES Globally, it has been projected that there will be 2 billion overweight and 1 billion obese individuals by 2030. In Korea, the prevalence of adult obesity (BMI>25) increased from 29.7% in 2009 to 32.4% in 2015. Moreover, childhood obesity, which leads to adulthood obesity, has increasingly become a social problem. The purpose of this review is to summarize the scientific basis for the development of effective models and policies aimed at preventing obesity over a lifetime based on research modeling obesogenic environments. MATERIALS/METHODS The review focuses on the characteristics of obesity prevalence and trends in 3P analysis (papers, patents, and products) as well as government-funded projects in Korean obesity obesogenic environments over the last 10 years. RESULTS AND DISCUSSION As a result of the 3P analysis, studies on obesity risk factors were frequently carried out, according to two data bases RISS (4.9%) and PubMed (24.7%). Since there were only 17% patents related to the mechanism of preventing obesity in 7,951 Korean patents related to obesity, new paradigms of technologies to dominate the global obesity markets are needed. After government-funded projects were analyzed, communication and cooperation in multi-governmental departments were suggested to elucidate the characteristics of Korean obesity. Government should also produce short- and long-term road maps to develop a practical, successful outcome. Although the rate of obesity in Korea is currently lower than in other developed countries according to WHO criteria, without adequate governmental intervention, obesity rates will approach those of the top countries with high incidence rates of obesity within the next 10 years.
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Affiliation(s)
- Myoungsook Lee
- Department of Food and Nutrition & Research Institute of Obesity Sciences, Sungshin Women's University, 76ga-55, Dobong-ro, Gangbuk-gu, Soeul 01133, Republic of Korea
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Park JG, Oh GT. Current pharmacotherapies for atherosclerotic cardiovascular diseases. Arch Pharm Res 2019; 42:206-223. [DOI: 10.1007/s12272-019-01116-1] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2018] [Accepted: 01/11/2019] [Indexed: 12/19/2022]
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Park JG, Jeong SJ, Yu J, Kim G, Jeong LS, Oh GT. LJ-1888, a selective antagonist for the A3 adenosine receptor, ameliorates the development of atherosclerosis and hypercholesterolemia in apolipoprotein E knock-out mice. BMB Rep 2019. [PMID: 29936931 PMCID: PMC6235094 DOI: 10.5483/bmbrep.2018.51.10.098] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022] Open
Abstract
Cardiovascular diseases arising from atherosclerosis are the leading causes of mortality and morbidity worldwide. Lipid-lowering agents have been developed in order to treat hypercholesterolemia, a major risk factor for atherosclerosis. However, the prevalence of cardiovascular diseases is increasing, indicating a need to identify novel therapeutic targets and develop new treatment agents. Adenosine receptors (ARs) are emerging as therapeutic targets in asthma, rheumatoid arthritis, cancer, ischemia, and inflammatory diseases. This study assessed whether LJ-1888, a selective antagonist for A3 AR, can inhibit the development of atherosclerosis in apolipoprotein E knock-out (ApoE−/−) mice who are fed a western diet. Plaque formation was significantly lower in ApoE−/− mice administered LJ-1888 than in mice not administered LJ-1888, without any associated liver damage. LJ-1888 treatment of ApoE−/− mice prevented western diet-induced hypercholesterolemia by markedly reducing low-density lipoprotein cholesterol levels and significantly increasing high-density lipoprotein cholesterol concentrations. Reduced hypercholesterolemia in ApoE−/− mice administered LJ-1888 was associated with the enhanced expression of genes involved in bile acid biosynthesis. These findings indicate that LJ-1888, a selective antagonist for A3 AR, may be a novel candidate for the treatment of atherosclerosis and hypercholesterolemia.
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Affiliation(s)
- Jong-Gil Park
- Biotherapeutics Translational Research Center, Korea Research Institute of Bioscience & Biotechnology (KRIBB), Daejeon 34141, Korea
| | - Se-Jin Jeong
- Cardiovascular Division, Department of Medicine, Washington University School of Medicine, St. Louis, MO, USA
| | - Jinha Yu
- College of Pharmacy, Seoul National University, Seoul 08826, Korea
| | - Gyudong Kim
- College of Pharmacy, Seoul National University, Seoul 08826, Korea
| | - Lak Shin Jeong
- College of Pharmacy, Seoul National University, Seoul 08826, Korea
| | - Goo Taeg Oh
- Immune and Vascular Cell Network Research Center, National Creative Initiatives, Department of Life Sciences, Ewha Womans University, Seoul 03760, Korea
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Pine GM, Batugedara HM, Nair MG. Here, there and everywhere: Resistin-like molecules in infection, inflammation, and metabolic disorders. Cytokine 2018; 110:442-451. [PMID: 29866514 DOI: 10.1016/j.cyto.2018.05.014] [Citation(s) in RCA: 61] [Impact Index Per Article: 10.2] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2018] [Revised: 05/13/2018] [Accepted: 05/15/2018] [Indexed: 02/07/2023]
Abstract
The Resistin-Like Molecules (RELM) α, β, and γ and their namesake, resistin, share structural and sequence homology but exhibit significant diversity in expression and function within their mammalian host. RELM proteins are expressed in a wide range of diseases, such as: microbial infections (eg. bacterial and helminth), inflammatory diseases (eg. asthma, fibrosis) and metabolic disorders (eg. diabetes). While the expression pattern and molecular regulation of RELM proteins are well characterized, much controversy remains over their proposed functions, with evidence of host-protective and pathogenic roles. Moreover, the receptors for RELM proteins are unclear, although three receptors for resistin, decorin, adenylyl cyclase-associated protein 1 (CAP1), and Toll-like Receptor 4 (TLR4) have recently been proposed. In this review, we will first summarize the molecular regulation of the RELM gene family, including transcription regulation and tissue expression in humans and mouse disease models. Second, we will outline the function and receptor-mediated signaling associated with RELM proteins. Finally, we will discuss recent studies suggesting that, despite early misconceptions that these proteins are pathogenic, RELM proteins have a more nuanced and potentially beneficial role for the host in certain disease settings.
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Affiliation(s)
- Gabrielle M Pine
- Division of Biomedical Sciences, School of Medicine, University of California Riverside, Riverside, CA, United States
| | - Hashini M Batugedara
- Division of Biomedical Sciences, School of Medicine, University of California Riverside, Riverside, CA, United States
| | - Meera G Nair
- Division of Biomedical Sciences, School of Medicine, University of California Riverside, Riverside, CA, United States.
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Abstract
Obesity shifts the immune phenotype from M2 macrophage polarization to M1, which causes metabolic dysfunction. In this issue of Immunity, Kumamoto et al. (2016) identify a tissue-resident mononuclear phagocyte population that promotes weight gain and glucose intolerance but are defined by the M2 marker CD301b.
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Affiliation(s)
- Nelson H Knudsen
- Department of Genetics and Complex Diseases, Division of Biological Sciences, Harvard T.H. Chan School of Public Health, 665 Huntington Ave, Boston, MA 02115, USA
| | - Chih-Hao Lee
- Department of Genetics and Complex Diseases, Division of Biological Sciences, Harvard T.H. Chan School of Public Health, 665 Huntington Ave, Boston, MA 02115, USA.
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Busnelli M, Manzini S, Hilvo M, Parolini C, Ganzetti GS, Dellera F, Ekroos K, Jänis M, Escalante-Alcalde D, Sirtori CR, Laaksonen R, Chiesa G. Liver-specific deletion of the Plpp3 gene alters plasma lipid composition and worsens atherosclerosis in apoE -/- mice. Sci Rep 2017; 7:44503. [PMID: 28291223 PMCID: PMC5349609 DOI: 10.1038/srep44503] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2016] [Accepted: 02/08/2017] [Indexed: 01/13/2023] Open
Abstract
The PLPP3 gene encodes for a ubiquitous enzyme that dephosphorylates several lipid substrates. Genome-wide association studies identified PLPP3 as a gene that plays a role in coronary artery disease susceptibility. The aim of the study was to investigate the effect of Plpp3 deletion on atherosclerosis development in mice. Because the constitutive deletion of Plpp3 in mice is lethal, conditional Plpp3 hepatocyte-specific null mice were generated by crossing floxed Plpp3 mice with animals expressing Cre recombinase under control of the albumin promoter. The mice were crossed onto the athero-prone apoE-/- background to obtain Plpp3f/fapoE-/-Alb-Cre+ and Plpp3f/fapoE-/-Alb-Cre- offspring, the latter of which were used as controls. The mice were fed chow or a Western diet for 32 or 12 weeks, respectively. On the Western diet, Alb-Cre+ mice developed more atherosclerosis than Alb-Cre- mice, both at the aortic sinus and aorta. Lipidomic analysis showed that hepatic Plpp3 deletion significantly modified the levels of several plasma lipids involved in atherosclerosis, including lactosylceramides, lysophosphatidic acids, and lysophosphatidylinositols. In conclusion, Plpp3 ablation in mice worsened atherosclerosis development. Lipidomic analysis suggested that the hepatic Plpp3 deletion may promote atherosclerosis by increasing plasma levels of several low-abundant pro-atherogenic lipids, thus providing a molecular basis for the observed results.
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Affiliation(s)
- Marco Busnelli
- Department of Pharmacological and Biomolecular Sciences, Università degli Studi di Milano, Milano, Italy
| | - Stefano Manzini
- Department of Pharmacological and Biomolecular Sciences, Università degli Studi di Milano, Milano, Italy
| | | | - Cinzia Parolini
- Department of Pharmacological and Biomolecular Sciences, Università degli Studi di Milano, Milano, Italy
| | - Giulia S Ganzetti
- Department of Pharmacological and Biomolecular Sciences, Università degli Studi di Milano, Milano, Italy
| | - Federica Dellera
- Department of Pharmacological and Biomolecular Sciences, Università degli Studi di Milano, Milano, Italy
| | | | - Minna Jänis
- Department of Physiology, Institute of Biomedicine, University of Turku, Turku, Finland
| | - Diana Escalante-Alcalde
- Instituto de Fisiología Celular, División de Neurociencias Universidad Nacional Autónoma de México, Cd. Mx. 04510, México
| | - Cesare R Sirtori
- Department of Pharmacological and Biomolecular Sciences, Università degli Studi di Milano, Milano, Italy
| | | | - Giulia Chiesa
- Department of Pharmacological and Biomolecular Sciences, Università degli Studi di Milano, Milano, Italy
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23
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Yan S, Tang J, Zhang Y, Wang Y, Zuo S, Shen Y, Zhang Q, Chen D, Yu Y, Wang K, Duan SZ, Yu Y. Prostaglandin E 2 promotes hepatic bile acid synthesis by an E prostanoid receptor 3-mediated hepatocyte nuclear receptor 4α/cholesterol 7α-hydroxylase pathway in mice. Hepatology 2017; 65:999-1014. [PMID: 28039934 DOI: 10.1002/hep.28928] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/13/2016] [Revised: 10/09/2016] [Accepted: 10/27/2016] [Indexed: 12/15/2022]
Abstract
UNLABELLED Prostaglandin E2 (PGE2 ) is an important lipid mediator of inflammation. However, whether and how PGE2 regulates hepatic cholesterol metabolism remains unknown. We found that expression of the PGE2 receptor, E prostanoid receptor 3 (EP3) expression is remarkably increased in hepatocytes in response to hyperlipidemic stress. Hepatocyte-specific deletion of EP3 receptor (EP3hep-/- ) results in hypercholesterolemia and augments diet-induced atherosclerosis in low-density lipoprotein receptor knockout (Ldlr-/- ) mice. Cholesterol 7α-hydroxylase (CYP7A1) is down-regulated in livers of EP3hep-/- Ldlr-/- mice, leading to suppressed hepatic bile acid (BA) biosynthesis. Mechanistically, hepatic-EP3 deficiency suppresses CYP7A1 expression by elevating protein kinase A (PKA)-dependent Ser143 phosphorylation of hepatocyte nuclear receptor 4α (HNF4α). Disruption of the PKA-HNF4α interaction and BA sequestration rescue impaired BA excretion and ameliorated atherosclerosis in EP3hep-/- Ldlr-/- mice. CONCLUSION Our results demonstrated an unexpected role of proinflammatory mediator PGE2 in improving hepatic cholesterol metabolism through activation of the EP3-mediated PKA/HNF4α/CYP7A1 pathway, indicating that inhibition of this pathway may be a novel therapeutic strategy for dyslipidemia and atherosclerosis. (Hepatology 2017;65:999-1014).
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Affiliation(s)
- Shuai Yan
- Department of Pharmacology, School of Basic Medical Sciences, Tianjin Medical University, Tianjin, China.,Key Laboratory of Food Safety Research, CAS Center for Excellence in Molecular Cell Science, Institute for Nutritional Sciences, Shanghai Institutes for Biological Sciences, University of Chinese Academy of Sciences, Shanghai, China
| | - Juan Tang
- Key Laboratory of Food Safety Research, CAS Center for Excellence in Molecular Cell Science, Institute for Nutritional Sciences, Shanghai Institutes for Biological Sciences, University of Chinese Academy of Sciences, Shanghai, China
| | - Yuyao Zhang
- Key Laboratory of Food Safety Research, CAS Center for Excellence in Molecular Cell Science, Institute for Nutritional Sciences, Shanghai Institutes for Biological Sciences, University of Chinese Academy of Sciences, Shanghai, China
| | - Yuanyang Wang
- Department of Pharmacology, School of Basic Medical Sciences, Tianjin Medical University, Tianjin, China
| | - Shengkai Zuo
- Key Laboratory of Food Safety Research, CAS Center for Excellence in Molecular Cell Science, Institute for Nutritional Sciences, Shanghai Institutes for Biological Sciences, University of Chinese Academy of Sciences, Shanghai, China
| | - Yujun Shen
- Department of Pharmacology, School of Basic Medical Sciences, Tianjin Medical University, Tianjin, China
| | - Qianqian Zhang
- Key Laboratory of Food Safety Research, CAS Center for Excellence in Molecular Cell Science, Institute for Nutritional Sciences, Shanghai Institutes for Biological Sciences, University of Chinese Academy of Sciences, Shanghai, China
| | - Di Chen
- Key Laboratory of Food Safety Research, CAS Center for Excellence in Molecular Cell Science, Institute for Nutritional Sciences, Shanghai Institutes for Biological Sciences, University of Chinese Academy of Sciences, Shanghai, China
| | - Yu Yu
- Key Laboratory of Food Safety Research, CAS Center for Excellence in Molecular Cell Science, Institute for Nutritional Sciences, Shanghai Institutes for Biological Sciences, University of Chinese Academy of Sciences, Shanghai, China
| | - Kai Wang
- School of Life Science and Technology, ShanghaiTech University, Shanghai, China
| | - Sheng-Zhong Duan
- Key Laboratory of Food Safety Research, CAS Center for Excellence in Molecular Cell Science, Institute for Nutritional Sciences, Shanghai Institutes for Biological Sciences, University of Chinese Academy of Sciences, Shanghai, China.,Laboratory of Oral Microbiology, Shanghai Research Institute of Stomatology, Shanghai Key Laboratory of Stomatology, Ninth People's Hospital, School of Stomatology, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Ying Yu
- Department of Pharmacology, School of Basic Medical Sciences, Tianjin Medical University, Tianjin, China
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24
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Shituleni SA, Gan F, Nido SA, Mengistu BM, Khan AZ, Liu Y, Huang K. Effects of yeast polysaccharide on biochemical indices, antioxidant status, histopathological lesions and genetic expressions related with lipid metabolism in mice fed with high fat diet. ACTA ACUST UNITED AC 2016. [DOI: 10.1016/j.bcdf.2016.10.001] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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25
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Kumamoto Y, Camporez JPG, Jurczak MJ, Shanabrough M, Horvath T, Shulman GI, Iwasaki A. CD301b(+) Mononuclear Phagocytes Maintain Positive Energy Balance through Secretion of Resistin-like Molecule Alpha. Immunity 2016; 45:583-596. [PMID: 27566941 DOI: 10.1016/j.immuni.2016.08.002] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2014] [Revised: 05/12/2016] [Accepted: 06/27/2016] [Indexed: 12/12/2022]
Abstract
Mononuclear phagocytes (MNPs) are a highly heterogeneous group of cells that play important roles in maintaining the body's homeostasis. Here, we found CD301b (also known as MGL2), a lectin commonly used as a marker for alternatively activated macrophages, was selectively expressed by a subset of CD11b(+)CD11c(+)MHCII(+) MNPs in multiple organs including adipose tissues. Depleting CD301b(+) MNPs in vivo led to a significant weight loss with increased insulin sensitivity and a marked reduction in serum Resistin-like molecule (RELM) α, a multifunctional cytokine produced by MNPs. Reconstituting RELMα in CD301b(+) MNP-depleted animals restored body weight and normoglycemia. Thus, CD301b(+) MNPs play crucial roles in maintaining glucose metabolism and net energy balance.
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Affiliation(s)
- Yosuke Kumamoto
- Department of Immunobiology, Yale University School of Medicine, New Haven, CT 06510, USA
| | - Joao Paulo G Camporez
- Department of Internal Medicine, Yale University School of Medicine, New Haven, CT 06510, USA
| | - Michael J Jurczak
- Department of Internal Medicine, Yale University School of Medicine, New Haven, CT 06510, USA
| | - Marya Shanabrough
- Section of Comparative Medicine, Yale University School of Medicine, New Haven, CT 06510, USA
| | - Tamas Horvath
- Section of Comparative Medicine, Yale University School of Medicine, New Haven, CT 06510, USA
| | - Gerald I Shulman
- Department of Internal Medicine, Yale University School of Medicine, New Haven, CT 06510, USA; Howard Hughes Medical Institute, Chevy Chase, MD 20815-6789, USA
| | - Akiko Iwasaki
- Department of Immunobiology, Yale University School of Medicine, New Haven, CT 06510, USA; Howard Hughes Medical Institute, Chevy Chase, MD 20815-6789, USA.
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26
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Zhou Y, Bennett TM, Shiels A. Lens ER-stress response during cataract development in Mip-mutant mice. Biochim Biophys Acta Mol Basis Dis 2016; 1862:1433-42. [PMID: 27155571 DOI: 10.1016/j.bbadis.2016.05.003] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2016] [Revised: 04/25/2016] [Accepted: 05/03/2016] [Indexed: 12/22/2022]
Abstract
Major intrinsic protein (MIP) is a functional water-channel (AQP0) that also plays a key role in establishing lens fiber cell architecture. Genetic variants of MIP have been associated with inherited and age-related forms of cataract; however, the underlying pathogenic mechanisms are unclear. Here we have used lens transcriptome profiling by microarray-hybridization and qPCR to identify pathogenic changes during cataract development in Mip-mutant (Lop/+) mice. In postnatal Lop/+ lenses (P7) 99 genes were up-regulated and 75 were down-regulated (>2-fold, p=<0.05) when compared with wild-type. A pathway analysis of up-regulated genes in the Lop/+ lens (P7) was consistent with endoplasmic reticulum (ER)-stress and activation of the unfolded protein response (UPR). The most up-regulated UPR genes (>4-fold) in the Lop/+ lens included Chac1>Ddit3>Atf3>Trib3>Xbp1 and the most down-regulated genes (>5-fold) included two anti-oxidant genes, Hspb1 and Hmox1. Lop/+ lenses were further characterized by abundant TUNEL-positive nuclei within central degenerating fiber cells, glutathione depletion, free-radical overproduction, and calpain hyper-activation. These data suggest that Lop/+ lenses undergo proteotoxic ER-stress induced cell-death resulting from prolonged activation of the Eif2ak3/Perk-Atf4-Ddit3-Chac1 branch of the UPR coupled with severe oxidative-stress.
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Affiliation(s)
- Yuefang Zhou
- Department of Ophthalmology and Visual Sciences, Washington University School of Medicine, St. Louis, MO 63110, USA
| | - Thomas M Bennett
- Department of Ophthalmology and Visual Sciences, Washington University School of Medicine, St. Louis, MO 63110, USA
| | - Alan Shiels
- Department of Ophthalmology and Visual Sciences, Washington University School of Medicine, St. Louis, MO 63110, USA.
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27
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Rückerl D, Allen JE. Macrophage proliferation, provenance, and plasticity in macroparasite infection. Immunol Rev 2015; 262:113-33. [PMID: 25319331 PMCID: PMC4324133 DOI: 10.1111/imr.12221] [Citation(s) in RCA: 74] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Macrophages have long been center stage in the host response to microbial infection, but only in the past 10–15 years has there been a growing appreciation for their role in helminth infection and the associated type 2 response. Through the actions of the IL-4 receptor α (IL-4Rα), type 2 cytokines result in the accumulation of macrophages with a distinctive activation phenotype. Although our knowledge of IL-4Rα-induced genes is growing rapidly, the specific functions of these macrophages have yet to be established in most disease settings. Understanding the interplay between IL-4Rα-activated macrophages and the other cellular players is confounded by the enormous transcriptional heterogeneity within the macrophage population and by their highly plastic nature. Another level of complexity is added by the new knowledge that tissue macrophages can be derived either from a resident prenatal population or from blood monocyte recruitment and that IL-4 can increase macrophage numbers through proliferative expansion. Here, we review current knowledge on the contribution of macrophages to helminth killing and wound repair, with specific attention paid to distinct cellular origins and plasticity potential.
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Affiliation(s)
- Dominik Rückerl
- Institute for Immunology and Infection Research, School of Biological Sciences, University of Edinburgh, Edinburgh, UK
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28
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Abstract
Resistin (encoded by Retn) was previously identified in rodents as a hormone associated with diabetes; however human resistin is instead linked to inflammation. Resistin is a member of a small gene family that includes the resistin-like peptides (encoded by Retnl genes) in mammals. Genomic searches of available genome sequences of diverse vertebrates and phylogenetic analyses were conducted to determine the size and origin of the resistin-like gene family. Genes encoding peptides similar to resistin were found in Mammalia, Sauria, Amphibia, and Actinistia (coelacanth, a lobe-finned fish), but not in Aves or fish from Actinopterygii, Chondrichthyes, or Agnatha. Retnl originated by duplication and transposition from Retn on the early mammalian lineage after divergence of the platypus, but before the placental and marsupial mammal divergence. The resistin-like gene family illustrates an instance where the locus of origin of duplicated genes can be identified, with Retn continuing to reside at this location. Mammalian species typically have a single copy Retn gene, but are much more variable in their numbers of Retnl genes, ranging from 0 to 9. Since Retn is located at the locus of origin, thus likely retained the ancestral expression pattern, largely maintained its copy number, and did not display accelerated evolution, we suggest that it is more likely to have maintained an ancestral function, while Retnl, which transposed to a new location, displays accelerated evolution, and shows greater variability in gene number, including gene loss, likely evolved new, but potentially lineage-specific, functions.
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29
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Barnes MA, Carson MJ, Nair MG. Non-traditional cytokines: How catecholamines and adipokines influence macrophages in immunity, metabolism and the central nervous system. Cytokine 2015; 72:210-9. [PMID: 25703786 DOI: 10.1016/j.cyto.2015.01.008] [Citation(s) in RCA: 79] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2014] [Revised: 01/15/2015] [Accepted: 01/19/2015] [Indexed: 01/03/2023]
Abstract
Catecholamines and adipokines function as hormones; catecholamines as neurotransmitters in the sympathetic nervous system, and adipokines as mediators of metabolic processes. It has become increasingly clear, however, that both also function as immunomodulators of innate and adaptive immune cells, including macrophages. Macrophages can respond to, as well as produce their own catecholamines. Dopamine, noradrenaline, and adrenaline are the most abundant catecholamines in the body, and can induce both pro-inflammatory and anti-inflammatory immune responses in macrophages, as well as non-immune processes such as thermogenesis. Though they are responsive to adipokines, particularly lipoproteins, leptin, and adiponectin, macrophages generally do not synthesize their own adipokines, with the exception being resistin-like molecules. Adipokines contribute to adverse metabolic and immune responses by stimulating lipid accumulation, foam cell formation and pro-inflammatory cytokine production in macrophages. Adipokines can also promote balance or resolution during metabolic and immune processes by promoting reverse lipid transport and expression of Th2 cytokines. This review will explore the mechanisms by which catecholamines and adipokines influence macrophage function in neural pathways, immunity and metabolism.
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Affiliation(s)
- Mark A Barnes
- Division of Biomedical Sciences, School of Medicine, University of California Riverside, Riverside, CA, United States
| | - Monica J Carson
- Division of Biomedical Sciences, School of Medicine, University of California Riverside, Riverside, CA, United States
| | - Meera G Nair
- Division of Biomedical Sciences, School of Medicine, University of California Riverside, Riverside, CA, United States.
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30
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Dawson PA. Impact of Inhibiting Ileal Apical versus Basolateral Bile Acid Transport on Cholesterol Metabolism and Atherosclerosis in Mice. Dig Dis 2015; 33:382-7. [PMID: 26045273 PMCID: PMC4465549 DOI: 10.1159/000371691] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
BACKGROUND Bile acid sequestrants have been used for many years to treat hypercholesterolemia by increasing hepatic conversion of cholesterol to bile acids, thereby inducing hepatic LDL receptor expression and clearance of apoB-containing particles. In order to further understand the underlying molecular mechanisms linking gut-liver signaling and cholesterol homeostasis, mouse models defective in ileal apical membrane bile acid transport (Asbt-null) and ileal basolateral membrane bile acid transport (Ostα-null) were studied under basal and hypercholesterolemic conditions. KEY MESSAGES Hepatic conversion of cholesterol to bile acids is the major pathway for cholesterol catabolism and a major mechanism for cholesterol elimination. Blocking ileal apical membrane bile acid transport (Asbt-null mice) increases fecal bile acid excretion, hepatic Cyp7a1 expression, and the relative proportion of taurocholate in the bile acid pool, but decreases ileal FGF15 expression, bile acid pool size, and hepatic cholesterol content. In contrast, blocking ileal basolateral membrane bile acid transport (Ostα-null mice) increases ileal FGF15 expression, reduces hepatic Cyp7a1 expression, and increases the proportion of tauro-β-muricholic acid in the bile acid pool. In the hypercholesterolemic apoE-null background, plasma cholesterol levels and measurements of atherosclerosis were reduced in Asbt/apoE-null mice, but not in Ostα/apoE-null mice. CONCLUSIONS Blocking the intestinal absorption of bile acids at the apical versus basolateral membrane differentially affects bile acid and cholesterol metabolism, including the development of hypercholesterolemia-associated atherosclerosis. The molecular mechanism likely involves an altered regulation of ileal FGF15 expression.
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Affiliation(s)
- Paul A. Dawson
- Department of Pediatrics, Division of Gastroenterology, Hepatology and Nutrition, Emory University School of Medicine, Atlanta, GA 30322
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31
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Lee MR, Shim D, Yoon J, Jang HS, Oh SW, Suh SH, Choi JH, Oh GT. Retnla overexpression attenuates allergic inflammation of the airway. PLoS One 2014; 9:e112666. [PMID: 25415454 PMCID: PMC4240542 DOI: 10.1371/journal.pone.0112666] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2014] [Accepted: 10/10/2014] [Indexed: 02/07/2023] Open
Abstract
Resistin-like molecule alpha (Retnla), also known as ‘Found in inflammatory zone 1’, is a secreted protein that has been found in bronchoalveolar lavage (BAL) fluid of ovalbumin (OVA)-induced asthmatic mice and plays a role as a regulator of T helper (Th)2-driven inflammation. However, the role of Retnla in the progress of Th2-driven airway inflammation is not yet clear. To better understand the function of Retnla in Th2-driven airway inflammation, we generated Retnla-overexpressing (Retnla-Tg) mice. Retnla-Tg mice showed increased expression of Retnla protein in BAL fluid and airway epithelial cells. Retnla overexpression itself did not induce any alteration in lung histology or lung function compared to non-Tg controls. However, OVA-sensitized/challenged Retnla-Tg mice had decreased numbers of cells in BAL and inflammatory cells accumulating in the lung. They also showed a reduction in mucus production in the airway epithelium, concomitant with a decreased Muc5ac level. These results were accompanied by reduced levels of Th2 cytokines, including interleukin (IL)-4, IL-5, and IL-13, with no effect on levels of OVA-specific immunoglobulin isotypes. Furthermore, phosphorylation of ERK was markedly reduced in the lungs of OVA-challenged Retnla-Tg mice. Taken together, these results indicates that Retnla protects against Th2-mediated inflammation in an experimental mouse model of asthma, suggesting that therapeutic approaches to enhance the production of Retnla or Retnla-like molecules could be valuable for preventing allergic lung inflammation.
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Affiliation(s)
- Mi-Ran Lee
- Department of Life Sciences, Ewha Womans University, Seoul, Republic of Korea
| | - Dahee Shim
- Department of Life Science, College of Natural Sciences, Research Institute for Natural Sciences, Hanyang University, Seoul, Republic of Korea
| | - Jihye Yoon
- Department of Life Science, College of Natural Sciences, Research Institute for Natural Sciences, Hanyang University, Seoul, Republic of Korea
| | - Hyung Seok Jang
- Department of Life Science, College of Natural Sciences, Research Institute for Natural Sciences, Hanyang University, Seoul, Republic of Korea
| | - Se-Woong Oh
- Yuhan Research Institute, Yuhan Corporation, Gongse-Dong, Giheung-Gu, Yongin-Si, Gyeonggi-Do, Republic of Korea
| | - Suk Hyo Suh
- Department of Physiology Medical School, Ewha Womans University, Seoul, Republic of Korea
| | - Jae-Hoon Choi
- Department of Life Science, College of Natural Sciences, Research Institute for Natural Sciences, Hanyang University, Seoul, Republic of Korea
- * E-mail: (JHC); (GTO)
| | - Goo Taeg Oh
- Department of Life Sciences, Ewha Womans University, Seoul, Republic of Korea
- * E-mail: (JHC); (GTO)
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