1
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Fortier SM, Walker NM, Penke LR, Baas JD, Shen Q, Speth JM, Huang SK, Zemans RL, Bennett AM, Peters-Golden M. MAPK phosphatase 1 inhibition of p38α within lung myofibroblasts is essential for spontaneous fibrosis resolution. J Clin Invest 2024; 134:e172826. [PMID: 38512415 DOI: 10.1172/jci172826] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2023] [Accepted: 03/15/2024] [Indexed: 03/23/2024] Open
Abstract
Fibrosis following tissue injury is distinguished from normal repair by the accumulation of pathogenic and apoptosis-resistant myofibroblasts (MFs), which arise primarily by differentiation from resident fibroblasts. Endogenous molecular brakes that promote MF dedifferentiation and clearance during spontaneous resolution of experimental lung fibrosis may provide insights that could inform and improve the treatment of progressive pulmonary fibrosis in patients. MAPK phosphatase 1 (MKP1) influences the cellular phenotype and fate through precise and timely regulation of MAPK activity within various cell types and tissues, yet its role in lung fibroblasts and pulmonary fibrosis has not been explored. Using gain- and loss-of-function studies, we found that MKP1 promoted lung MF dedifferentiation and restored the sensitivity of these cells to apoptosis - effects determined to be mainly dependent on MKP1's dephosphorylation of p38α MAPK (p38α). Fibroblast-specific deletion of MKP1 following peak bleomycin-induced lung fibrosis largely abrogated its subsequent spontaneous resolution. Such resolution was restored by treating these transgenic mice with the p38α inhibitor VX-702. We conclude that MKP1 is a critical antifibrotic brake whose inhibition of pathogenic p38α in lung fibroblasts is necessary for fibrosis resolution following lung injury.
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Affiliation(s)
- Sean M Fortier
- Division of Pulmonary and Critical Care Medicine, University of Michigan Medical School, Ann Arbor, Michigan, USA
| | - Natalie M Walker
- Division of Pulmonary and Critical Care Medicine, University of Michigan Medical School, Ann Arbor, Michigan, USA
| | - Loka R Penke
- Division of Pulmonary and Critical Care Medicine, University of Michigan Medical School, Ann Arbor, Michigan, USA
| | - Jared D Baas
- Division of Pulmonary and Critical Care Medicine, University of Michigan Medical School, Ann Arbor, Michigan, USA
| | - Qinxue Shen
- Division of Pulmonary and Critical Care Medicine, University of Michigan Medical School, Ann Arbor, Michigan, USA
- Department of Pulmonary and Critical Care Medicine, The Second Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Jennifer M Speth
- Division of Pulmonary and Critical Care Medicine, University of Michigan Medical School, Ann Arbor, Michigan, USA
| | - Steven K Huang
- Division of Pulmonary and Critical Care Medicine, University of Michigan Medical School, Ann Arbor, Michigan, USA
| | - Rachel L Zemans
- Division of Pulmonary and Critical Care Medicine, University of Michigan Medical School, Ann Arbor, Michigan, USA
| | - Anton M Bennett
- Department of Pharmacology, Yale University School of Medicine, New Haven, Connecticut, USA
| | - Marc Peters-Golden
- Division of Pulmonary and Critical Care Medicine, University of Michigan Medical School, Ann Arbor, Michigan, USA
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2
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Zhou W, Zhao Z, Lin A, Yang JZ, Xu J, Wilder-Romans K, Yang A, Li J, Solanki S, Speth JM, Walker N, Scott AJ, Wang L, Wen B, Andren A, Zhang L, Kothari AU, Yao Y, Peterson ER, Korimerla N, Werner CK, Ullrich A, Liang J, Jacobson J, Palavalasa S, O’Brien AM, Elaimy AL, Ferris SP, Zhao SG, Sarkaria JN, Győrffy B, Zhang S, Al-Holou WN, Umemura Y, Morgan MA, Lawrence TS, Lyssiotis CA, Peters-Golden M, Shah YM, Wahl DR. GTP Signaling Links Metabolism, DNA Repair, and Responses to Genotoxic Stress. Cancer Discov 2024; 14:158-175. [PMID: 37902550 PMCID: PMC10872631 DOI: 10.1158/2159-8290.cd-23-0437] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2023] [Revised: 09/07/2023] [Accepted: 10/19/2023] [Indexed: 10/31/2023]
Abstract
How cell metabolism regulates DNA repair is incompletely understood. Here, we define a GTP-mediated signaling cascade that links metabolism to DNA repair and has significant therapeutic implications. GTP, but not other nucleotides, regulates the activity of Rac1, a guanine nucleotide-binding protein, which promotes the dephosphorylation of serine 323 on Abl-interactor 1 (Abi-1) by protein phosphatase 5 (PP5). Dephosphorylated Abi-1, a protein previously not known to activate DNA repair, promotes nonhomologous end joining. In patients and mouse models of glioblastoma, Rac1 and dephosphorylated Abi-1 mediate DNA repair and resistance to standard-of-care genotoxic treatments. The GTP-Rac1-PP5-Abi-1 signaling axis is not limited to brain cancer, as GTP supplementation promotes DNA repair and Abi-1-S323 dephosphorylation in nonmalignant cells and protects mouse tissues from genotoxic insult. This unexpected ability of GTP to regulate DNA repair independently of deoxynucleotide pools has important implications for normal physiology and cancer treatment. SIGNIFICANCE A newly described GTP-dependent signaling axis is an unexpected link between nucleotide metabolism and DNA repair. Disrupting this pathway can overcome cancer resistance to genotoxic therapy while augmenting it can mitigate genotoxic injury of normal tissues. This article is featured in Selected Articles from This Issue, p. 5.
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Affiliation(s)
- Weihua Zhou
- Department of Radiation Oncology, University of Michigan, Ann Arbor, MI, USA
| | - Zitong Zhao
- Department of Radiation Oncology, University of Michigan, Ann Arbor, MI, USA
- Department of Oncology, the Second Affiliated Hospital of Xi’an Jiaotong University, Xi’an, Shan Xi, PR China
| | - Angelica Lin
- Department of Radiation Oncology, University of Michigan, Ann Arbor, MI, USA
| | - John Z Yang
- Department of Radiation Oncology, University of Michigan, Ann Arbor, MI, USA
| | - Jie Xu
- Department of Radiation Oncology, University of Michigan, Ann Arbor, MI, USA
| | - Kari Wilder-Romans
- Department of Radiation Oncology, University of Michigan, Ann Arbor, MI, USA
| | - Annabel Yang
- Department of Radiation Oncology, University of Michigan, Ann Arbor, MI, USA
| | - Jing Li
- Cell Signaling Technology, Inc., Danvers, MA, USA
| | - Sumeet Solanki
- Department of Molecular & Integrative Physiology, University of Michigan, Ann Arbor, MI, USA
| | - Jennifer M Speth
- Division of Pulmonary and Critical Care Medicine, Department of Internal Medicine, University of Michigan, Ann Arbor, MI, USA
| | - Natalie Walker
- Division of Pulmonary and Critical Care Medicine, Department of Internal Medicine, University of Michigan, Ann Arbor, MI, USA
| | - Andrew J Scott
- Department of Radiation Oncology, University of Michigan, Ann Arbor, MI, USA
- Rogel Cancer Center, University of Michigan Medical School, Ann Arbor, MI, USA
| | - Lu Wang
- Department of Pharmaceutical Sciences, College of Pharmacy, University of Michigan, Ann Arbor, MI, USA
| | - Bo Wen
- Department of Pharmaceutical Sciences, College of Pharmacy, University of Michigan, Ann Arbor, MI, USA
| | - Anthony Andren
- Department of Molecular & Integrative Physiology, University of Michigan, Ann Arbor, MI, USA
| | - Li Zhang
- Department of Molecular & Integrative Physiology, University of Michigan, Ann Arbor, MI, USA
| | - Ayesha U Kothari
- Department of Radiation Oncology, University of Michigan, Ann Arbor, MI, USA
| | - Yangyang Yao
- Department of Radiation Oncology, University of Michigan, Ann Arbor, MI, USA
- Department of Oncology, the First Affiliated Hospital of Nanchang University, Nanchang, Jiangxi, PR China
| | - Erik R Peterson
- Department of Radiation Oncology, University of Michigan, Ann Arbor, MI, USA
| | - Navyateja Korimerla
- Department of Radiation Oncology, University of Michigan, Ann Arbor, MI, USA
| | - Christian K Werner
- Department of Radiation Oncology, University of Michigan, Ann Arbor, MI, USA
| | - Alexander Ullrich
- Department of Radiation Oncology, University of Michigan, Ann Arbor, MI, USA
| | - Jessica Liang
- Department of Radiation Oncology, University of Michigan, Ann Arbor, MI, USA
| | - Janna Jacobson
- Department of Radiation Oncology, University of Michigan, Ann Arbor, MI, USA
| | - Sravya Palavalasa
- Department of Radiation Oncology, University of Michigan, Ann Arbor, MI, USA
| | - Alexandra M O’Brien
- Department of Radiation Oncology, University of Michigan, Ann Arbor, MI, USA
| | - Ameer L Elaimy
- Department of Radiation Oncology, University of Michigan, Ann Arbor, MI, USA
| | - Sean P Ferris
- Department of Pathology, Division of Neuropathology, University of Michigan, Ann Arbor, MI, USA
| | - Shuang G Zhao
- Department of Human Oncology, University of Wisconsin Madison, WI, USA
| | | | - Balázs Győrffy
- Department of Bioinformatics, Semmelweis University, Budapest, Hungary; and TTK Cancer Biomarker Research Group, Institute of Enzymology, Budapest, Hungary
| | - Shuqun Zhang
- Department of Oncology, the Second Affiliated Hospital of Xi’an Jiaotong University, Xi’an, Shan Xi, PR China
| | - Wajd N Al-Holou
- Department of Neurosurgery, University of Michigan, Ann Arbor, MI, United States
| | - Yoshie Umemura
- Department of Neurology, University of Michigan, Ann Arbor, MI, United States
| | - Meredith A Morgan
- Department of Radiation Oncology, University of Michigan, Ann Arbor, MI, USA
| | - Theodore S Lawrence
- Department of Radiation Oncology, University of Michigan, Ann Arbor, MI, USA
| | - Costas A Lyssiotis
- Department of Molecular & Integrative Physiology, University of Michigan, Ann Arbor, MI, USA
- Department of Molecular and Integrative Physiology and Department of Internal Medicine, Division of Gastroenterology and Hepatology, University of Michigan, Ann Arbor, MI, USA
- Rogel Cancer Center, University of Michigan Medical School, Ann Arbor, MI, USA
| | - Marc Peters-Golden
- Division of Pulmonary and Critical Care Medicine, Department of Internal Medicine, University of Michigan, Ann Arbor, MI, USA
| | - Yatrik M Shah
- Department of Molecular & Integrative Physiology, University of Michigan, Ann Arbor, MI, USA
- Rogel Cancer Center, University of Michigan Medical School, Ann Arbor, MI, USA
| | - Daniel R Wahl
- Department of Radiation Oncology, University of Michigan, Ann Arbor, MI, USA
- Rogel Cancer Center, University of Michigan Medical School, Ann Arbor, MI, USA
- Lead contact
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3
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Penke LR, Speth JM, Huang SK, Fortier SM, Baas J, Peters-Golden M. KLF4 is a therapeutically tractable brake on fibroblast activation which promotes resolution of pulmonary fibrosis. JCI Insight 2022; 7:160688. [PMID: 35852857 PMCID: PMC9462506 DOI: 10.1172/jci.insight.160688] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2022] [Accepted: 07/14/2022] [Indexed: 11/29/2022] Open
Abstract
There is a paucity of information about potential molecular brakes on the activation of fibroblasts that drive tissue fibrosis. The transcription factor Krüppel-like factor 4 (KLF4) is best known as a determinant of cell stemness and a tumor suppressor. We found that its expression was diminished in fibroblasts from fibrotic lung. Gain- and loss-of-function studies showed that KLF4 inhibited fibroblast proliferation, collagen synthesis, and differentiation to myofibroblasts, while restoring their sensitivity to apoptosis. Conditional deletion of KLF4 from fibroblasts potentiated the peak degree of pulmonary fibrosis and abrogated the subsequent spontaneous resolution in a model of transient fibrosis. A small molecule inducer of KLF4 was able to restore its expression in fibrotic fibroblasts and elicit resolution in an experimental model characterized by more clinically relevant persistent pulmonary fibrosis. These data identify KLF4 as a pivotal brake on fibroblast activation whose induction represents a therapeutic approach in fibrosis of the lung and perhaps other organs.
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4
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Penke LR, Speth JM, Draijer C, Zaslona Z, Chen J, Mancuso P, Freeman CM, Curtis JL, Goldstein DR, Peters-Golden M. PGE 2 accounts for bidirectional changes in alveolar macrophage self-renewal with aging and smoking. Life Sci Alliance 2020; 3:3/11/e202000800. [PMID: 32820026 PMCID: PMC7441521 DOI: 10.26508/lsa.202000800] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2020] [Revised: 08/13/2020] [Accepted: 08/14/2020] [Indexed: 11/24/2022] Open
Abstract
Alveolar macrophages (AMs) are resident immune cells of the lung that are critical for host defense. AMs are capable of proliferative renewal, yet their numbers are known to decrease with aging and increase with cigarette smoking. The mechanism by which AM proliferation is physiologically restrained, and whether dysregulation of this brake contributes to altered AM numbers in pathologic circumstances, however, remains unknown. Mice of advanced age exhibited diminished basal AM numbers and contained elevated PGE2 levels in their bronchoalveolar lavage fluid (BALF) as compared with young mice. Exogenous PGE2 inhibited AM proliferation in an E prostanoid receptor 2 (EP2)-cyclic AMP-dependent manner. Furthermore, EP2 knockout (EP2 KO) mice exhibited elevated basal AM numbers, and their AMs resisted the ability of PGE2 and aged BALF to inhibit proliferation. In contrast, increased numbers of AMs in mice exposed to cigarette smoking were associated with reduced PGE2 levels in BALF and were further exaggerated in EP2 KO mice. Collectively, our findings demonstrate that PGE2 functions as a tunable brake on AM numbers under physiologic and pathophysiological conditions.
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Affiliation(s)
- Loka R Penke
- Division of Pulmonary and Critical Care Medicine, Department of Internal Medicine, University of Michigan Medical School, Ann Arbor, MI, USA
| | - Jennifer M Speth
- Division of Pulmonary and Critical Care Medicine, Department of Internal Medicine, University of Michigan Medical School, Ann Arbor, MI, USA
| | - Christina Draijer
- Division of Pulmonary and Critical Care Medicine, Department of Internal Medicine, University of Michigan Medical School, Ann Arbor, MI, USA
| | - Zbigniew Zaslona
- Division of Pulmonary and Critical Care Medicine, Department of Internal Medicine, University of Michigan Medical School, Ann Arbor, MI, USA
| | - Judy Chen
- Graduate Program in Immunology, University of Michigan Medical School, Ann Arbor, MI, USA.,Division of Cardiology, Department of Internal Medicine, University of Michigan Medical School, Ann Arbor, MI, USA
| | - Peter Mancuso
- Graduate Program in Immunology, University of Michigan Medical School, Ann Arbor, MI, USA.,Department of Nutritional Sciences, University of Michigan School of Public Health, Ann Arbor, MI, USA
| | - Christine M Freeman
- Division of Pulmonary and Critical Care Medicine, Department of Internal Medicine, University of Michigan Medical School, Ann Arbor, MI, USA.,Graduate Program in Immunology, University of Michigan Medical School, Ann Arbor, MI, USA.,Research Service, Veterans Affairs Ann Arbor Healthcare System, Ann Arbor, MI, USA
| | - Jeffrey L Curtis
- Division of Pulmonary and Critical Care Medicine, Department of Internal Medicine, University of Michigan Medical School, Ann Arbor, MI, USA.,Graduate Program in Immunology, University of Michigan Medical School, Ann Arbor, MI, USA.,Medical Service, Veterans Affairs Ann Arbor Healthcare System, Ann Arbor, MI, USA
| | - Daniel R Goldstein
- Graduate Program in Immunology, University of Michigan Medical School, Ann Arbor, MI, USA.,Division of Cardiology, Department of Internal Medicine, University of Michigan Medical School, Ann Arbor, MI, USA.,Institute of Gerontology, University of Michigan, Ann Arbor, MI, USA
| | - Marc Peters-Golden
- Division of Pulmonary and Critical Care Medicine, Department of Internal Medicine, University of Michigan Medical School, Ann Arbor, MI, USA .,Graduate Program in Immunology, University of Michigan Medical School, Ann Arbor, MI, USA
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5
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Schneider DJ, Smith KA, Latuszek CE, Wilke CA, Lyons DM, Penke LR, Speth JM, Marthi M, Swanson JA, Moore BB, Lauring AS, Peters-Golden M. Alveolar macrophage-derived extracellular vesicles inhibit endosomal fusion of influenza virus. EMBO J 2020; 39:e105057. [PMID: 32643835 DOI: 10.15252/embj.2020105057] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2020] [Revised: 06/05/2020] [Accepted: 06/15/2020] [Indexed: 01/09/2023] Open
Abstract
Alveolar macrophages (AMs) and epithelial cells (ECs) are the lone resident lung cells positioned to respond to pathogens at early stages of infection. Extracellular vesicles (EVs) are important vectors of paracrine signaling implicated in a range of (patho)physiologic contexts. Here we demonstrate that AMs, but not ECs, constitutively secrete paracrine activity localized to EVs which inhibits influenza infection of ECs in vitro and in vivo. AMs exposed to cigarette smoke extract lost the inhibitory activity of their secreted EVs. Influenza strains varied in their susceptibility to inhibition by AM-EVs. Only those exhibiting early endosomal escape and high pH of fusion were inhibited via a reduction in endosomal pH. By contrast, strains exhibiting later endosomal escape and lower fusion pH proved resistant to inhibition. These results extend our understanding of how resident AMs participate in host defense and have broader implications in the defense and treatment of pathogens internalized within endosomes.
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Affiliation(s)
- Daniel J Schneider
- Division of Pulmonary and Critical Care Medicine, Department of Internal Medicine, University of Michigan Medical School, Ann Arbor, MI, USA
| | - Katherine A Smith
- Division of Pulmonary and Critical Care Medicine, Department of Internal Medicine, University of Michigan Medical School, Ann Arbor, MI, USA
| | - Catrina E Latuszek
- Division of Pulmonary and Critical Care Medicine, Department of Internal Medicine, University of Michigan Medical School, Ann Arbor, MI, USA
| | - Carol A Wilke
- Division of Pulmonary and Critical Care Medicine, Department of Internal Medicine, University of Michigan Medical School, Ann Arbor, MI, USA.,Department of Microbiology and Immunology, University of Michigan Medical School, Ann Arbor, MI, USA
| | - Danny M Lyons
- Department of Microbiology and Immunology, University of Michigan Medical School, Ann Arbor, MI, USA.,Division of Infectious Disease, Department of Internal Medicine, University of Michigan Medical School, Ann Arbor, MI, USA
| | - Loka R Penke
- Division of Pulmonary and Critical Care Medicine, Department of Internal Medicine, University of Michigan Medical School, Ann Arbor, MI, USA
| | - Jennifer M Speth
- Division of Pulmonary and Critical Care Medicine, Department of Internal Medicine, University of Michigan Medical School, Ann Arbor, MI, USA
| | - Matangi Marthi
- Department of Microbiology and Immunology, University of Michigan Medical School, Ann Arbor, MI, USA
| | - Joel A Swanson
- Department of Microbiology and Immunology, University of Michigan Medical School, Ann Arbor, MI, USA
| | - Bethany B Moore
- Division of Pulmonary and Critical Care Medicine, Department of Internal Medicine, University of Michigan Medical School, Ann Arbor, MI, USA.,Department of Microbiology and Immunology, University of Michigan Medical School, Ann Arbor, MI, USA.,Graduate Program in Immunology, University of Michigan Medical School, Ann Arbor, MI, USA
| | - Adam S Lauring
- Department of Microbiology and Immunology, University of Michigan Medical School, Ann Arbor, MI, USA.,Division of Infectious Disease, Department of Internal Medicine, University of Michigan Medical School, Ann Arbor, MI, USA.,Graduate Program in Immunology, University of Michigan Medical School, Ann Arbor, MI, USA
| | - Marc Peters-Golden
- Division of Pulmonary and Critical Care Medicine, Department of Internal Medicine, University of Michigan Medical School, Ann Arbor, MI, USA.,Graduate Program in Immunology, University of Michigan Medical School, Ann Arbor, MI, USA
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6
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Draijer C, Speth JM, Penke LRK, Zaslona Z, Bazzill JD, Lugogo N, Huang YJ, Moon JJ, Peters-Golden M. Resident alveolar macrophage-derived vesicular SOCS3 dampens allergic airway inflammation. FASEB J 2020; 34:4718-4731. [PMID: 32030817 DOI: 10.1096/fj.201903089r] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2019] [Revised: 01/22/2020] [Accepted: 01/22/2020] [Indexed: 01/28/2023]
Abstract
Resident alveolar macrophages (AMs) suppress allergic inflammation in murine asthma models. Previously we reported that resident AMs can blunt inflammatory signaling in alveolar epithelial cells (ECs) by transcellular delivery of suppressor of cytokine signaling 3 (SOCS3) within extracellular vesicles (EVs). Here we examined the role of vesicular SOCS3 secretion as a mechanism by which AMs restrain allergic inflammatory responses in airway ECs. Bronchoalveolar lavage fluid (BALF) levels of SOCS3 were reduced in asthmatics and in allergen-challenged mice. Ex vivo SOCS3 secretion was reduced in AMs from challenged mice and this defect was mimicked by exposing normal AMs to cytokines associated with allergic inflammation. Both AM-derived EVs and synthetic SOCS3 liposomes inhibited the activation of STAT3 and STAT6 as well as cytokine gene expression in ECs challenged with IL-4/IL-13 and house dust mite (HDM) extract. This suppressive effect of EVs was lost when they were obtained from AMs exposed to allergic inflammation-associated cytokines. Finally, inflammatory cell recruitment and cytokine generation in the lungs of OVA-challenged mice were attenuated by intrapulmonary pretreatment with SOCS3 liposomes. Overall, AM secretion of SOCS3 within EVs serves as a brake on airway EC responses during allergic inflammation, but is impaired in asthma. Synthetic liposomes encapsulating SOCS3 can rescue this defect and may serve as a framework for novel therapeutic approaches targeting airway inflammation.
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Affiliation(s)
- Christina Draijer
- Division of Pulmonary and Critical Care Medicine, Department of Internal Medicine, University of Michigan Medical School, Ann Arbor, MI, USA
| | - Jennifer M Speth
- Division of Pulmonary and Critical Care Medicine, Department of Internal Medicine, University of Michigan Medical School, Ann Arbor, MI, USA
| | - Loka R K Penke
- Division of Pulmonary and Critical Care Medicine, Department of Internal Medicine, University of Michigan Medical School, Ann Arbor, MI, USA
| | - Zbigniew Zaslona
- Division of Pulmonary and Critical Care Medicine, Department of Internal Medicine, University of Michigan Medical School, Ann Arbor, MI, USA
| | - Joseph D Bazzill
- Department of Pharmaceutical Sciences, University of Michigan, Ann Arbor, MI, USA
| | - Njira Lugogo
- Division of Pulmonary and Critical Care Medicine, Department of Internal Medicine, University of Michigan Medical School, Ann Arbor, MI, USA
| | - Yvonne J Huang
- Division of Pulmonary and Critical Care Medicine, Department of Internal Medicine, University of Michigan Medical School, Ann Arbor, MI, USA
| | - James J Moon
- Department of Pharmaceutical Sciences, University of Michigan, Ann Arbor, MI, USA.,Graduate Program in Immunology, University of Michigan Medical School, Ann Arbor, MI, USA.,Department of Biomedical Engineering, University of Michigan, Ann Arbor, MI, USA
| | - Marc Peters-Golden
- Division of Pulmonary and Critical Care Medicine, Department of Internal Medicine, University of Michigan Medical School, Ann Arbor, MI, USA.,Graduate Program in Immunology, University of Michigan Medical School, Ann Arbor, MI, USA
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7
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Penke LR, Ouchi H, Speth JM, Lugogo N, Huang YJ, Huang SK, Peters-Golden M. Transcriptional regulation of the IL-13Rα2 gene in human lung fibroblasts. Sci Rep 2020; 10:1083. [PMID: 31974428 PMCID: PMC6978327 DOI: 10.1038/s41598-020-57972-1] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2019] [Accepted: 12/20/2019] [Indexed: 01/02/2023] Open
Abstract
Interleukin (IL)-13 is a type 2 cytokine with important roles in allergic diseases, asthma, and tissue fibrosis. Its receptor (R) α1 is primarily responsible for the biological actions of this cytokine, while Rα2 possesses a decoy function which can block IL-13 signaling. Although the expression of Rα2 is known to be subject to modulation, information about its transcriptional regulation is limited. In this study, we sought to expand the understanding of transcriptional control of Rα2 in lung fibroblasts. We confirmed previous reports that IL-13 elicited modest induction of Rα2 in normal adult human lung fibroblasts, but found that prostaglandin E2 (PGE2) and fibroblast growth factor 2 (FGF-2) -mediators known to influence fibroblast activation in tissue fibrosis but not previously investigated in this regard - led to a much greater magnitude of Rα2 induction. Although both PGE2 (via protein kinase A) and FGF-2 (via protein kinase B, also known as AKT) depended on activation of cAMP-responsive element-binding protein (CREB) for induction of Rα2 expression, they nevertheless demonstrated synergy in doing so, likely attributable to their differential utilization of distinct transcriptional start sites on the Rα2 promoter. Our data identify CREB activation via PGE2 and FGF-2 as a previously unrecognized molecular controller of Rα2 gene induction and provide potential new insights into strategies for therapeutic manipulation of this endogenous brake on IL-13 signaling.
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Affiliation(s)
- Loka R Penke
- Division of Pulmonary and Critical Care Medicine, Department of Internal Medicine, University of Michigan Medical School, Ann Arbor, MI, USA
| | - Hideyasu Ouchi
- Division of Pulmonary and Critical Care Medicine, Department of Internal Medicine, University of Michigan Medical School, Ann Arbor, MI, USA
| | - Jennifer M Speth
- Division of Pulmonary and Critical Care Medicine, Department of Internal Medicine, University of Michigan Medical School, Ann Arbor, MI, USA
| | - Njira Lugogo
- Division of Pulmonary and Critical Care Medicine, Department of Internal Medicine, University of Michigan Medical School, Ann Arbor, MI, USA
| | - Yvonne J Huang
- Division of Pulmonary and Critical Care Medicine, Department of Internal Medicine, University of Michigan Medical School, Ann Arbor, MI, USA
| | - Steven K Huang
- Division of Pulmonary and Critical Care Medicine, Department of Internal Medicine, University of Michigan Medical School, Ann Arbor, MI, USA
| | - Marc Peters-Golden
- Division of Pulmonary and Critical Care Medicine, Department of Internal Medicine, University of Michigan Medical School, Ann Arbor, MI, USA.
- Graduate Program in Immunology, University of Michigan Medical School, Ann Arbor, MI, USA.
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8
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Speth JM, Penke LR, Bazzill JD, Park KS, de Rubio RG, Schneider DJ, Ouchi H, Moon JJ, Keshamouni VG, Zemans RL, Lama VN, Arenberg DA, Peters-Golden M. Alveolar macrophage secretion of vesicular SOCS3 represents a platform for lung cancer therapeutics. JCI Insight 2019; 4:131340. [PMID: 31619584 PMCID: PMC6824301 DOI: 10.1172/jci.insight.131340] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2019] [Accepted: 09/12/2019] [Indexed: 01/10/2023] Open
Abstract
Lung cancer remains the leading cause of cancer-related death in the United States. Although the alveolar macrophage (AM) comprises the major resident immune cell in the lung, few studies have investigated its role in lung cancer development. We recently discovered a potentially novel mechanism wherein AMs regulate STAT-induced inflammatory responses in neighboring epithelial cells (ECs) via secretion and delivery of suppressors of cytokine signaling 3 (SOCS3) within extracellular vesicles (EVs). Here, we explored the impact of SOCS3 transfer on EC tumorigenesis and the integrity of AM SOCS3 secretion during development of lung cancer. AM-derived EVs containing SOCS3 inhibited STAT3 activation as well as proliferation and survival of lung adenocarcinoma cells. Levels of secreted SOCS3 were diminished in lungs of patients with non-small cell lung cancer and in a mouse model of lung cancer, and the impaired ability of murine AMs to secrete SOCS3 within EVs preceded the development of lung tumors. Loss of this homeostatic brake on tumorigenesis prompted our effort to "rescue" it. Provision of recombinant SOCS3 loaded within synthetic liposomes inhibited proliferation and survival of lung adenocarcinoma cells in vitro as well as malignant transformation of normal ECs. Intratumoral injection of SOCS3 liposomes attenuated tumor growth in a lung cancer xenograft model. This work identifies AM-derived vesicular SOCS3 as an endogenous antitumor mechanism that is disrupted within the tumor microenvironment and whose rescue by synthetic liposomes can be leveraged as a potential therapeutic strategy for lung cancer.
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Affiliation(s)
- Jennifer M. Speth
- Division of Pulmonary and Critical Care Medicine, Department of Internal Medicine, University of Michigan Medical School, Ann Arbor, Michigan, USA
| | - Loka R. Penke
- Division of Pulmonary and Critical Care Medicine, Department of Internal Medicine, University of Michigan Medical School, Ann Arbor, Michigan, USA
| | - Joseph D. Bazzill
- Department of Pharmaceutical Sciences, University of Michigan College of Pharmacy, Ann Arbor, Michigan, USA
| | - Kyung Soo Park
- Department of Biomedical Engineering, University of Michigan College of Engineering, Ann Arbor, Michigan, USA
| | - Rafael Gil de Rubio
- Division of Pulmonary and Critical Care Medicine, Department of Internal Medicine, University of Michigan Medical School, Ann Arbor, Michigan, USA
| | - Daniel J. Schneider
- Division of Pulmonary and Critical Care Medicine, Department of Internal Medicine, University of Michigan Medical School, Ann Arbor, Michigan, USA
| | - Hideyasu Ouchi
- Division of Pulmonary and Critical Care Medicine, Department of Internal Medicine, University of Michigan Medical School, Ann Arbor, Michigan, USA
| | - James J. Moon
- Department of Pharmaceutical Sciences, University of Michigan College of Pharmacy, Ann Arbor, Michigan, USA
- Department of Biomedical Engineering, University of Michigan College of Engineering, Ann Arbor, Michigan, USA
- Graduate Program in Immunology, University of Michigan Medical School, Ann Arbor, Michigan, USA
| | - Venkateshwar G. Keshamouni
- Division of Pulmonary and Critical Care Medicine, Department of Internal Medicine, University of Michigan Medical School, Ann Arbor, Michigan, USA
- Graduate Program in Immunology, University of Michigan Medical School, Ann Arbor, Michigan, USA
| | - Rachel L. Zemans
- Division of Pulmonary and Critical Care Medicine, Department of Internal Medicine, University of Michigan Medical School, Ann Arbor, Michigan, USA
| | - Vibha N. Lama
- Division of Pulmonary and Critical Care Medicine, Department of Internal Medicine, University of Michigan Medical School, Ann Arbor, Michigan, USA
| | - Douglas A. Arenberg
- Division of Pulmonary and Critical Care Medicine, Department of Internal Medicine, University of Michigan Medical School, Ann Arbor, Michigan, USA
| | - Marc Peters-Golden
- Division of Pulmonary and Critical Care Medicine, Department of Internal Medicine, University of Michigan Medical School, Ann Arbor, Michigan, USA
- Graduate Program in Immunology, University of Michigan Medical School, Ann Arbor, Michigan, USA
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Speth JM, Penke LR, Bazzill J, Schneider DJ, Arenberg DA, Moon JJ, Keshamouni VG, Peters-Golden M. Abstract A35: Vesicular secretion of suppressor of cytokine signaling 3 by alveolar macrophages is dysregulated in NSCLC and its provision inhibits tumor cell function. Clin Cancer Res 2018. [DOI: 10.1158/1557-3265.aacriaslc18-a35] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Abstract
Rationale: Inadequate expression of suppressor of cytokine signaling 3 (SOCS3) with subsequent activation of its target, the transcription factor STAT3, has been implicated in tumorigenesis and cancer progression in the lung and other organs. Our lab has recently reported the novel capability of alveolar macrophages (AMs) to secrete SOCS3 within microvesicles (MVs). While AM delivery of MV-encapsulated SOCS3 was shown to suppress inflammatory signaling in recipient lung epithelial cells, the potential significance of this process in restraining the development of lung cancer has not been studied.
Methods: A KRAS G12D mutant mouse model was utilized to determine dysfunction of AM SOCS3 secretion in lung cancer. Mice were administered adenoviral Cre recombinase via intratracheal instillation, resulting in formation of lung tumors after 16 weeks. Bronchoalveolar lavage (BAL) fluid and AMs were isolated from the lungs of KRAS and wild-type (WT) mice, and analysis of SOCS3 secretion in BAL or AM cell culture medium was done via ELISA after sonication to disrupt vesicles. In vitro experiments utilized human adenocarcinoma cells (A549) or KRAS mutant rat lung epithelial cells (RLE-G12V). Proliferation, apoptosis and transformation were assessed by Cyquant assay, Annexin V staining, and soft agar assay, respectively. For SOCS3 provision studies, natural AM-derived MVs (isolated by ultracentrifugation) or synthetic liposomes containing recombinant SOCS3 were utilized.
Results: Levels of secreted SOCS3 were ~50% lower in KRAS mice BAL than in WT BAL fluid. Additionally, although AMs isolated from KRAS mice contained similar amounts of intracellular SOCS3 and released similar numbers of MVs as those from WT mice, their ex vivo capacity for SOCS3 secretion was significantly lower than that of WT AMs. To determine whether provision of exogenous SOCS3 could inhibit tumorigenesis, synthetic SOCS3 liposomes were administered to RLE-G12V cells prior to chemical transformation with N-Methyl-N′-nitro-N-nitrosoguanidine (MNNG). Addition of exogenous SOCS3 had the capacity to significantly inhibit colony formation in soft agar. To investigate effects of exogenous SOCS3 on established tumor cell function, A549 cells were exposed to both natural AM-derived MVs and SOCS3-containing liposomes and effects on proliferation and apoptosis were measured. Both liposomes and natural MVs significantly induced apoptosis and inhibited proliferation. Finally, the reduction in secreted SOCS3 observed in the mouse model was confirmed in BAL samples of a cohort of NSCLC lung cancer patients compared to healthy volunteers.
Conclusion: We report a novel dysregulation of immune surveillance in the form of decreased SOCS3 secretion by AMs that is elicited by the tumor microenvironment, and that may promote tumorigenesis via sustained STAT3 activation. Future studies will focus on the mechanism underlying this defect and whether rescuing SOCS3 secretion can inhibit cancer progression in vivo.
Citation Format: Jennifer M. Speth, Loka R. Penke, Joseph Bazzill, Daniel J. Schneider, Douglas A. Arenberg, James J. Moon, Venkateshwar G. Keshamouni, Marc Peters-Golden. Vesicular secretion of suppressor of cytokine signaling 3 by alveolar macrophages is dysregulated in NSCLC and its provision inhibits tumor cell function [abstract]. In: Proceedings of the Fifth AACR-IASLC International Joint Conference: Lung Cancer Translational Science from the Bench to the Clinic; Jan 8-11, 2018; San Diego, CA. Philadelphia (PA): AACR; Clin Cancer Res 2018;24(17_Suppl):Abstract nr A35.
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Penke LR, Speth JM, Dommeti VL, White ES, Bergin IL, Peters-Golden M. FOXM1 is a critical driver of lung fibroblast activation and fibrogenesis. J Clin Invest 2018; 128:2389-2405. [PMID: 29733296 DOI: 10.1172/jci87631] [Citation(s) in RCA: 76] [Impact Index Per Article: 12.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2016] [Accepted: 03/20/2018] [Indexed: 12/23/2022] Open
Abstract
While the transcription factor forkhead box M1 (FOXM1) is well known as a proto-oncogene, its potential role in lung fibroblast activation has never been explored. Here, we show that FOXM1 is more highly expressed in fibrotic than in normal lung fibroblasts in humans and mice. FOXM1 was required not only for cell proliferation in response to mitogens, but also for myofibroblast differentiation and apoptosis resistance elicited by TGF-β. The lipid mediator PGE2, acting via cAMP signaling, was identified as an endogenous negative regulator of FOXM1. Finally, genetic deletion of FOXM1 in fibroblasts or administration of the FOXM1 inhibitor Siomycin A in a therapeutic protocol attenuated bleomycin-induced pulmonary fibrosis. Our results identify FOXM1 as a driver of lung fibroblast activation and underscore the therapeutic potential of targeting FOXM1 for pulmonary fibrosis.
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Affiliation(s)
- Loka R Penke
- Division of Pulmonary and Critical Care Medicine, Department of Internal Medicine
| | - Jennifer M Speth
- Division of Pulmonary and Critical Care Medicine, Department of Internal Medicine
| | - Vijaya L Dommeti
- Michigan Center for Translational Pathology, Department of Pathology, and
| | - Eric S White
- Division of Pulmonary and Critical Care Medicine, Department of Internal Medicine
| | - Ingrid L Bergin
- Unit for Laboratory Animal Medicine, University of Michigan, Ann Arbor, Michigan, USA
| | - Marc Peters-Golden
- Division of Pulmonary and Critical Care Medicine, Department of Internal Medicine
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11
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Schneider DJ, Speth JM, Penke LR, Wettlaufer SH, Swanson JA, Peters-Golden M. Mechanisms and modulation of microvesicle uptake in a model of alveolar cell communication. J Biol Chem 2017; 292:20897-20910. [PMID: 29101235 PMCID: PMC5743066 DOI: 10.1074/jbc.m117.792416] [Citation(s) in RCA: 56] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2017] [Revised: 10/27/2017] [Indexed: 12/31/2022] Open
Abstract
Extracellular vesicles, including exosomes and shed microvesicles (MVs), can be internalized by recipient cells to modulate function. Although the mechanism by which extracellular vesicles are internalized is incompletely characterized, it is generally considered to involve endocytosis and an initial surface-binding event. Furthermore, modulation of uptake by microenvironmental factors is largely unstudied. Here, we used flow cytometry, confocal microscopy, and pharmacologic and molecular targeting to address these gaps in knowledge in a model of pulmonary alveolar cell-cell communication. Alveolar macrophage-derived MVs were fully internalized by alveolar epithelial cells in a time-, dose-, and temperature-dependent manner. Uptake was dependent on dynamin and actin polymerization. However, it was neither saturable nor dependent on clathrin or receptor binding. Internalization was enhanced by extracellular proteins but was inhibited by cigarette smoke extract via oxidative disruption of actin polymerization. We conclude that MV internalization occurs via a pathway more consistent with fluid-phase than receptor-dependent endocytosis and is subject to bidirectional modulation by relevant pathologic perturbations.
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Affiliation(s)
| | | | - Loka R Penke
- From the Division of Pulmonary and Critical Care Medicine
| | | | - Joel A Swanson
- Department of Microbiology and Immunology, and
- Graduate Program in Immunology, University of Michigan Medical School, Ann Arbor, Michigan 48109
| | - Marc Peters-Golden
- From the Division of Pulmonary and Critical Care Medicine,
- Graduate Program in Immunology, University of Michigan Medical School, Ann Arbor, Michigan 48109
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Schneider DJ, Speth JM, Peters-Golden M. Signed, Sealed, Delivered: Microenvironmental Modulation of Extracellular Vesicle-Dependent Immunoregulation in the Lung. Front Cell Dev Biol 2016; 4:94. [PMID: 27626032 PMCID: PMC5004409 DOI: 10.3389/fcell.2016.00094] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2016] [Accepted: 08/18/2016] [Indexed: 12/26/2022] Open
Abstract
Unconventional secretion and subsequent uptake of molecular cargo via extracellular vesicles (EVs) is an important mechanism by which cells can exert paracrine effects. While this phenomenon has been widely characterized in the context of their ability to promote inflammation, less is known about the ability of EVs to transfer immunosuppressive cargo. Maintenance of normal physiology in the lung requires suppression of potentially damaging inflammatory responses to the myriad of insults to which it is continually exposed. Recently, our laboratory has reported the ability of alveolar macrophages (AMs) to secrete suppressors of cytokine signaling (SOCS) proteins within microvesicles (MVs) and exosomes (Exos). Uptake of these EVs by alveolar epithelial cells (AECs) resulted in inhibition of pro-inflammatory STAT activation in response to cytokines. Moreover, AM packaging of SOCS within EVs could be rapidly tuned in response to exogenous or AEC-derived substances. In this article we will highlight gaps in knowledge regarding microenvironmental modulation of cargo packaging and utilization as well as EV secretion and uptake. Advances in these areas are critical for improving understanding of intercellular communication in the immune system and for therapeutic application of artificial vesicles aimed at treatment of diseases characterized by dysregulated inflammation.
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Affiliation(s)
- Daniel J Schneider
- Division of Pulmonary and Critical Care Medicine, University of Michigan Medical School USA
| | - Jennifer M Speth
- Division of Pulmonary and Critical Care Medicine, University of Michigan Medical School USA
| | - Marc Peters-Golden
- Division of Pulmonary and Critical Care Medicine, University of Michigan Medical SchoolUSA; Graduate Program in Immunology, University of Michigan Medical SchoolUSA
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Speth JM, Bourdonnay E, Penke LRK, Mancuso P, Moore BB, Weinberg JB, Peters-Golden M. Alveolar Epithelial Cell-Derived Prostaglandin E2 Serves as a Request Signal for Macrophage Secretion of Suppressor of Cytokine Signaling 3 during Innate Inflammation. J Immunol 2016; 196:5112-20. [PMID: 27183597 DOI: 10.4049/jimmunol.1502153] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Received: 10/02/2015] [Accepted: 04/15/2016] [Indexed: 01/22/2023]
Abstract
Preservation of gas exchange mandates that the pulmonary alveolar surface restrain unnecessarily harmful inflammatory responses to the many challenges to which it is exposed. These responses reflect the cross-talk between alveolar epithelial cells (AECs) and resident alveolar macrophages (AMs). We recently determined that AMs can secrete suppressor of cytokine signaling (SOCS) proteins within microparticles. Uptake of these SOCS-containing vesicles by epithelial cells inhibits cytokine-induced STAT activation. However, the ability of epithelial cells to direct AM release of SOCS-containing vesicles in response to inflammatory insults has not been studied. In this study, we report that SOCS3 protein was elevated in bronchoalveolar lavage fluid of both virus- and bacteria-infected mice, as well as in an in vivo LPS model of acute inflammation. In vitro studies revealed that AEC-conditioned medium (AEC-CM) enhanced AM SOCS3 secretion above basal levels. Increased amounts of PGE2 were present in AEC-CM after LPS challenge, and both pharmacologic inhibition of PGE2 synthesis in AECs and neutralization of PGE2 in AEC-CM implicated this prostanoid as the major AEC-derived factor mediating enhanced AM SOCS3 secretion. Moreover, pharmacologic blockade of PGE2 synthesis or genetic deletion of a PGE2 synthase similarly attenuated the increase in bronchoalveolar lavage fluid SOCS3 noted in lungs of mice challenged with LPS in vivo. These results demonstrate a novel tunable form of cross-talk in which AECs use PGE2 as a signal to request SOCS3 from AMs to dampen their endogenous inflammatory responses during infection.
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Affiliation(s)
- Jennifer M Speth
- Division of Pulmonary and Critical Care Medicine, Department of Internal Medicine, University of Michigan Medical School, Ann Arbor, MI 48109
| | - Emilie Bourdonnay
- Division of Pulmonary and Critical Care Medicine, Department of Internal Medicine, University of Michigan Medical School, Ann Arbor, MI 48109
| | - Loka Raghu Kumar Penke
- Division of Pulmonary and Critical Care Medicine, Department of Internal Medicine, University of Michigan Medical School, Ann Arbor, MI 48109
| | - Peter Mancuso
- Department of Nutritional Sciences, School of Public Health, University of Michigan, Ann Arbor, MI 48109; Graduate Program in Immunology, University of Michigan Medical School, Ann Arbor, MI 48109
| | - Bethany B Moore
- Division of Pulmonary and Critical Care Medicine, Department of Internal Medicine, University of Michigan Medical School, Ann Arbor, MI 48109; Graduate Program in Immunology, University of Michigan Medical School, Ann Arbor, MI 48109; Department of Microbiology and Immunology, University of Michigan Medical School, Ann Arbor, MI 48109; and
| | - Jason B Weinberg
- Department of Microbiology and Immunology, University of Michigan Medical School, Ann Arbor, MI 48109; and Division of Infectious Diseases, Department of Pediatrics and Communicable Diseases, University of Michigan Medical School, Ann Arbor, MI 48109
| | - Marc Peters-Golden
- Division of Pulmonary and Critical Care Medicine, Department of Internal Medicine, University of Michigan Medical School, Ann Arbor, MI 48109; Graduate Program in Immunology, University of Michigan Medical School, Ann Arbor, MI 48109;
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Bourdonnay E, Zasłona Z, Penke LRK, Speth JM, Schneider DJ, Przybranowski S, Swanson JA, Mancuso P, Freeman CM, Curtis JL, Peters-Golden M. Transcellular delivery of vesicular SOCS proteins from macrophages to epithelial cells blunts inflammatory signaling. J Biophys Biochem Cytol 2015. [DOI: 10.1083/jcb.2091oia65] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
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15
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Bourdonnay E, Zasłona Z, Penke LRK, Speth JM, Schneider DJ, Przybranowski S, Swanson JA, Mancuso P, Freeman CM, Curtis JL, Peters-Golden M. Transcellular delivery of vesicular SOCS proteins from macrophages to epithelial cells blunts inflammatory signaling. ACTA ACUST UNITED AC 2015; 212:729-42. [PMID: 25847945 PMCID: PMC4419346 DOI: 10.1084/jem.20141675] [Citation(s) in RCA: 143] [Impact Index Per Article: 15.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2014] [Accepted: 03/17/2015] [Indexed: 12/20/2022]
Abstract
SOCS1 and -3 proteins are released by alveolar macrophages into exosomes and microparticles, respectively, which are then taken up by alveolar epithelial cells, resulting in inhibition of STAT signaling. This process was dampened by exposure to cigarette smoke and may thus be important in suppressing airway inflammation. JAK-STAT signaling mediates the actions of numerous cytokines and growth factors, and its endogenous brake is the family of SOCS proteins. Consistent with their intracellular roles, SOCS proteins have never been identified in the extracellular space. Here we report that alveolar macrophages can secrete SOCS1 and -3 in exosomes and microparticles, respectively, for uptake by alveolar epithelial cells and subsequent inhibition of STAT activation. Secretion is tunable and occurs both in vitro and in vivo. SOCS secretion into lung lining fluid was diminished by cigarette smoking in humans and mice. Secretion and transcellular delivery of vesicular SOCS proteins thus represent a new model for the control of inflammatory signaling, which is subject to dysregulation during states of inflammation.
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Affiliation(s)
- Emilie Bourdonnay
- Division of Pulmonary and Critical Care Medicine, Department of Internal Medicine and Department of Microbiology and Immunology, University of Michigan Medical School; and Department of Environmental Health Sciences, School of Public Health; University of Michigan, Ann Arbor, MI 48109
| | - Zbigniew Zasłona
- Division of Pulmonary and Critical Care Medicine, Department of Internal Medicine and Department of Microbiology and Immunology, University of Michigan Medical School; and Department of Environmental Health Sciences, School of Public Health; University of Michigan, Ann Arbor, MI 48109
| | - Loka Raghu Kumar Penke
- Division of Pulmonary and Critical Care Medicine, Department of Internal Medicine and Department of Microbiology and Immunology, University of Michigan Medical School; and Department of Environmental Health Sciences, School of Public Health; University of Michigan, Ann Arbor, MI 48109
| | - Jennifer M Speth
- Division of Pulmonary and Critical Care Medicine, Department of Internal Medicine and Department of Microbiology and Immunology, University of Michigan Medical School; and Department of Environmental Health Sciences, School of Public Health; University of Michigan, Ann Arbor, MI 48109
| | - Daniel J Schneider
- Division of Pulmonary and Critical Care Medicine, Department of Internal Medicine and Department of Microbiology and Immunology, University of Michigan Medical School; and Department of Environmental Health Sciences, School of Public Health; University of Michigan, Ann Arbor, MI 48109
| | - Sally Przybranowski
- Division of Pulmonary and Critical Care Medicine, Department of Internal Medicine and Department of Microbiology and Immunology, University of Michigan Medical School; and Department of Environmental Health Sciences, School of Public Health; University of Michigan, Ann Arbor, MI 48109
| | - Joel A Swanson
- Division of Pulmonary and Critical Care Medicine, Department of Internal Medicine and Department of Microbiology and Immunology, University of Michigan Medical School; and Department of Environmental Health Sciences, School of Public Health; University of Michigan, Ann Arbor, MI 48109
| | - Peter Mancuso
- Division of Pulmonary and Critical Care Medicine, Department of Internal Medicine and Department of Microbiology and Immunology, University of Michigan Medical School; and Department of Environmental Health Sciences, School of Public Health; University of Michigan, Ann Arbor, MI 48109
| | - Christine M Freeman
- Division of Pulmonary and Critical Care Medicine, Department of Internal Medicine and Department of Microbiology and Immunology, University of Michigan Medical School; and Department of Environmental Health Sciences, School of Public Health; University of Michigan, Ann Arbor, MI 48109 Research Services and Medical Services, Department of Veterans Affairs Health Care System, Ann Arbor, MI 48105
| | - Jeffrey L Curtis
- Division of Pulmonary and Critical Care Medicine, Department of Internal Medicine and Department of Microbiology and Immunology, University of Michigan Medical School; and Department of Environmental Health Sciences, School of Public Health; University of Michigan, Ann Arbor, MI 48109 Research Services and Medical Services, Department of Veterans Affairs Health Care System, Ann Arbor, MI 48105
| | - Marc Peters-Golden
- Division of Pulmonary and Critical Care Medicine, Department of Internal Medicine and Department of Microbiology and Immunology, University of Michigan Medical School; and Department of Environmental Health Sciences, School of Public Health; University of Michigan, Ann Arbor, MI 48109
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Hoggatt J, Speth JM, Pelus LM. Concise review: Sowing the seeds of a fruitful harvest: hematopoietic stem cell mobilization. Stem Cells 2015; 31:2599-606. [PMID: 24123398 DOI: 10.1002/stem.1574] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2013] [Accepted: 05/06/2013] [Indexed: 02/06/2023]
Abstract
Hematopoietic stem cell transplantation is the only curative option for a number of malignant and nonmalignant diseases. As the use of hematopoietic transplant has expanded, so too has the source of stem and progenitor cells. The predominate source of stem and progenitors today, particularly in settings of autologous transplantation, is mobilized peripheral blood. This review will highlight the historical advances which led to the widespread use of peripheral blood stem cells for transplantation, with a look toward future enhancements to mobilization strategies.
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Affiliation(s)
- Jonathan Hoggatt
- Harvard University, Department of Stem Cell and Regenerative Biology, Massachusetts General Hospital, Center for Regenerative Medicine, Harvard Stem Cell Institute, Boston, Massachusetts, USA
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