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Chakrabarti M, Chattha A, Nair A, Jiao K, Potts JD, Wang L, Branch S, Harrelson S, Khan S, Azhar M. Hippo Signaling Mediates TGFβ-Dependent Transcriptional Inputs in Cardiac Cushion Mesenchymal Cells to Regulate Extracellular Matrix Remodeling. J Cardiovasc Dev Dis 2023; 10:483. [PMID: 38132651 PMCID: PMC10744298 DOI: 10.3390/jcdd10120483] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2023] [Revised: 11/30/2023] [Accepted: 11/30/2023] [Indexed: 12/23/2023] Open
Abstract
The transforming growth factor beta (TGFβ) and Hippo signaling pathways are evolutionarily conserved pathways that play a critical role in cardiac fibroblasts during embryonic development, tissue repair, and fibrosis. TGFβ signaling and Hippo signaling are also important for cardiac cushion remodeling and septation during embryonic development. Loss of TGFβ2 in mice causes cardiac cushion remodeling defects resulting in congenital heart disease. In this study, we used in vitro molecular and pharmacologic approaches in the cushion mesenchymal cell line (tsA58-AVM) and investigated if the Hippo pathway acts as a mediator of TGFβ2 signaling. Immunofluorescence staining showed that TGFβ2 induced nuclear translocation of activated SMAD3 in the cushion mesenchymal cells. In addition, the results indicate increased nuclear localization of Yes-associated protein 1 (YAP1) following a similar treatment of TGFβ2. In collagen lattice formation assays, the TGFβ2 treatment of cushion cells resulted in an enhanced collagen contraction compared to the untreated cushion cells. Interestingly, verteporfin, a YAP1 inhibitor, significantly blocked the ability of cushion cells to contract collagen gel in the absence or presence of exogenously added TGFβ2. To confirm the molecular mechanisms of the verteporfin-induced inhibition of TGFβ2-dependent extracellular matrix (ECM) reorganization, we performed a gene expression analysis of key mesenchymal genes involved in ECM remodeling in heart development and disease. Our results confirm that verteporfin significantly decreased the expression of α-smooth muscle actin (Acta2), collagen 1a1 (Col1a1), Ccn1 (i.e., Cyr61), and Ccn2 (i.e., Ctgf). Western blot analysis indicated that verteporfin treatment significantly blocked the TGFβ2-induced activation of SMAD2/3 in cushion mesenchymal cells. Collectively, these results indicate that TGFβ2 regulation of cushion mesenchymal cell behavior and ECM remodeling is mediated by YAP1. Thus, the TGFβ2 and Hippo pathway integration represents an important step in understanding the etiology of congenital heart disease.
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Affiliation(s)
- Mrinmay Chakrabarti
- Department of Cell Biology and Anatomy, School of Medicine, University of South Carolina, Columbia, SC 29202, USA; (M.C.); (A.C.); (A.N.); (J.D.P.)
| | - Ahad Chattha
- Department of Cell Biology and Anatomy, School of Medicine, University of South Carolina, Columbia, SC 29202, USA; (M.C.); (A.C.); (A.N.); (J.D.P.)
| | - Abhijith Nair
- Department of Cell Biology and Anatomy, School of Medicine, University of South Carolina, Columbia, SC 29202, USA; (M.C.); (A.C.); (A.N.); (J.D.P.)
| | - Kai Jiao
- Center for Biotechnology & Genomic Medicine, Medical College of Georgia, Augusta University, Augusta, GA 30912, USA;
| | - Jay D. Potts
- Department of Cell Biology and Anatomy, School of Medicine, University of South Carolina, Columbia, SC 29202, USA; (M.C.); (A.C.); (A.N.); (J.D.P.)
| | - Lianming Wang
- Department of Statistics, University of South Carolina, Columbia, SC 29208, USA;
| | - Scotty Branch
- KOR Life Sciences, KOR Medical, and Vikor Scientific, Charleston, SC 29403, USA; (S.B.); (S.H.); (S.K.)
| | - Shea Harrelson
- KOR Life Sciences, KOR Medical, and Vikor Scientific, Charleston, SC 29403, USA; (S.B.); (S.H.); (S.K.)
| | - Saeed Khan
- KOR Life Sciences, KOR Medical, and Vikor Scientific, Charleston, SC 29403, USA; (S.B.); (S.H.); (S.K.)
| | - Mohamad Azhar
- Department of Cell Biology and Anatomy, School of Medicine, University of South Carolina, Columbia, SC 29202, USA; (M.C.); (A.C.); (A.N.); (J.D.P.)
- William Jennings Bryan Dorn VA Medical Center, Columbia, SC 29202, USA
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Laudisi F, Stolfi C, Monteleone I, Monteleone G. TGF-β1 signaling and Smad7 control T-cell responses in health and immune-mediated disorders. Eur J Immunol 2023; 53:e2350460. [PMID: 37611637 DOI: 10.1002/eji.202350460] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2023] [Revised: 07/14/2023] [Accepted: 08/22/2023] [Indexed: 08/25/2023]
Abstract
Transforming growth factor (TGF)-β1, a member of the TGF-β superfamily, is produced by many immune and nonimmune cells and has pleiotropic effects on both innate and adaptive immunity, especially in the control of T-cell differentiation and function. Consistently, loss of TGF-β1 function is associated with exacerbated T-cell-dependent inflammatory responses that culminate in pathological processes in allergic and immune-mediated diseases. In this review, we highlight the roles of TGF-β1 in immunity, focusing mainly on its ability to promote differentiation of regulatory T cells, T helper (Th)-17, and Th9 cells, thus contributing to amplifying or restricting T-cell responses in health and human diseases (e.g., inflammatory bowel diseases, type 1 diabetes, asthma, and MS). In addition, we discuss the involvement of Smad7, an inhibitor of TGF-β1 signaling, in immune-mediated disorders (e.g., psoriasis, rheumatoid arthritis, MS, and inflammatory bowel diseases), as well as the discordant results of clinical trials with mongersen, an oral pharmaceutical compound containing a Smad7 antisense oligonucleotide, in patients with Crohn's disease. Further work is needed to ascertain the reasons for such a discrepancy as well as to identify better candidates for treatment with Smad7 inhibitors.
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Affiliation(s)
- Federica Laudisi
- Department of Systems Medicine, University of Rome "Tor Vergata", Rome, Italy
| | - Carmine Stolfi
- Department of Systems Medicine, University of Rome "Tor Vergata", Rome, Italy
| | - Ivan Monteleone
- Department of Biomedicine and Prevention, University of Rome "Tor Vergata", Rome, Italy
| | - Giovanni Monteleone
- Department of Systems Medicine, University of Rome "Tor Vergata", Rome, Italy
- Gastroenterology Unit, Azienda Ospedaliera Policlinico Tor Vergata, Rome, Italy
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Abstract
Transforming growth factor β (TGFβ) is a multifunctional cytokine, and its signalling responses are exerted via integrated intracellular pathways and complex regulatory mechanisms. Due to its high potency, TGFβ signalling is tightly controlled under normal circumstances, while its dysregulation in cancer favours metastasis. The recognised potential of TGFβ as a therapeutic target led to emerging development of anti-TGFβ reagents with preclinical success, yet these therapeutics failed to recapitulate their efficacy in experimental settings. In this review, possible reasons for this inconsistency are discussed, addressing the knowledge gap between theoretical and actual behaviours of TGFβ signalling. Previous studies on oncogenic cells have demonstrated the spatiotemporal heterogeneity of TGFβ signalling intensity. Under feedback mechanisms and exosomal ligand recycling, cancer cells may achieve cyclic TGFβ signalling to facilitate dissemination and colonisation. This challenges the current presumption of persistently high TGFβ signalling in cancer, pointing to a new direction of research on TGFβ-targeted therapeutics.
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Affiliation(s)
- Siqi Wu
- Department of Surgery, Royal Melbourne Hospital, The University of Melbourne, Parkville, Australia
| | - Rodney Brian Luwor
- Department of Surgery, Royal Melbourne Hospital, The University of Melbourne, Parkville, Australia
- Fiona Elsey Cancer Research Institute, Ballarat, Australia
- Health, Innovation and Transformation Centre, Federation University, Ballarat, Australia
| | - Hong-Jian Zhu
- Department of Surgery, Royal Melbourne Hospital, The University of Melbourne, Parkville, Australia
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Lee KM, Fu Q, Huai G, Deng K, Lei J, Kojima L, Agarwal D, Van Galen P, Kimura S, Tanimine N, Washburn L, Yeh H, Naji A, Rickert CG, LeGuern C, Markmann JF. Suppression of allograft rejection by regulatory B cells generated via toll-like receptor signaling. JCI Insight 2022; 7:152213. [PMID: 35943811 PMCID: PMC9536278 DOI: 10.1172/jci.insight.152213] [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] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2021] [Accepted: 07/28/2022] [Indexed: 11/20/2022] Open
Abstract
B lymphocytes have long been recognized for their critical contributions to adaptive immunity, providing defense against pathogens through cognate antigen presentation to T cells and Ab production. More recently appreciated is that B cells are also integral in securing self-tolerance; this has led to interest in their therapeutic application to downregulate unwanted immune responses, such as transplant rejection. In this study, we found that PMA- and ionomycin-activated mouse B cells acquire regulatory properties following stimulation through TLR4/TLR9 receptors (Bregs-TLR). Bregs-TLR efficiently inhibited T cell proliferation in vitro and prevented allograft rejection. Unlike most reported Breg activities, the inhibition of alloimmune responses by Bregs-TLR relied on the expression of TGF-β and not IL-10. In vivo, Bregs-TLR interrupted donor-specific T cell expansion and induced Tregs in a TGF-β–dependent manner. RNA-Seq analyses corroborated the involvement of TGF-β pathways in Breg-TLR function, identified potential gene pathways implicated in preventing graft rejection, and suggested targets to foster Breg regulation.
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Affiliation(s)
- Kang Mi Lee
- Department of Surgery, Massachusetts General Hospital, Harvard Medical School, Boston, United States of America
| | - Qiang Fu
- Organ Transplantation Center, University of Electronic Science and Technology of China, Chengdu, China
| | - Guoli Huai
- Organ Transplantation Center, University of Electronic Science and Technology of China, Chengdu, China
| | - Kevin Deng
- Department of Surgery, Massachusetts General Hospital, Harvard Medical School, Boston, United States of America
| | - Ji Lei
- Department of Surgery, Massachusetts General Hospital, Harvard Medical School, Boston, United States of America
| | - Lisa Kojima
- Department of Surgery, Massachusetts General Hospital, Harvard Medical School, Boston, United States of America
| | - Divyansh Agarwal
- Department of Surgery, Hospital of the University of Pennsylvania, Philadelphia, United States of America
| | - Peter Van Galen
- Division of Hematology, Brigham & Womans Hospital, Harvard Medical School, Boston, United States of America
| | - Shoko Kimura
- Department of Surgery, Massachusetts General Hospital, Harvard Medical School, Boston, United States of America
| | - Naoki Tanimine
- Department of Gastroenterological and Transplantation Surgery, Hiroshima University, Hiroshima, Japan
| | - Laura Washburn
- Department of Surgery, Massachusetts General Hospital, Harvard Medical School, Boston, United States of America
| | - Heidi Yeh
- Department of Surgery, Massachusetts General Hospital, Harvard Medical School, Boston, United States of America
| | - Ali Naji
- Department of Surgery, Hospital of the University of Pennsylvania, Philadelphia, United States of America
| | - Charles G Rickert
- Department of Surgery, Massachusetts General Hospital, Harvard Medical School, Boston, United States of America
| | - Christian LeGuern
- Department of Surgery, Massachusetts General Hospital, Harvard Medical School, Boston, United States of America
| | - James F Markmann
- Department of Surgery, Massachusetts General Hospital, Harvard Medical School, Boston, United States of America
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Chakrabarti M, Bhattacharya A, Gebere MG, Johnson J, Ayub ZA, Chatzistamou I, Vyavahare NR, Azhar M. Increased TGFβ1 and SMAD3 Contribute to Age-Related Aortic Valve Calcification. Front Cardiovasc Med 2022; 9:770065. [PMID: 35928937 PMCID: PMC9343688 DOI: 10.3389/fcvm.2022.770065] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2021] [Accepted: 06/20/2022] [Indexed: 12/01/2022] Open
Abstract
Aims Calcific aortic valve disease (CAVD) is a progressive heart disease that is particularly prevalent in elderly patients. The current treatment of CAVD is surgical valve replacement, but this is not a permanent solution, and it is very challenging for elderly patients. Thus, a pharmacological intervention for CAVD may be beneficial. In this study, we intended to rescue aortic valve (AV) calcification through inhibition of TGFβ1 and SMAD3 signaling pathways. Methods and Results The klotho gene, which was discovered as an aging-suppressor gene, has been observed to play a crucial role in AV calcification. The klotho knockout (Kl–/–) mice have shorter life span (8–12 weeks) and develop severe AV calcification. Here, we showed that increased TGFβ1 and TGFβ-dependent SMAD3 signaling were associated with AV calcification in Kl–/– mice. Next, we generated Tgfb1- and Smad3-haploinsufficient Kl–/– mice to determine the contribution of TGFβ1 and SMAD3 to the AV calcification in Kl–/– mice. The histological and morphometric evaluation suggested a significant reduction of AV calcification in Kl–/–; Tgfb1± mice compared to Kl–/– mice. Smad3 heterozygous deletion was observed to be more potent in reducing AV calcification in Kl–/– mice compared to the Kl–/–; Tgfb1± mice. We observed significant inhibition of Tgfb1, Pai1, Bmp2, Alk2, Spp1, and Runx2 mRNA expression in Kl–/–; Tgfb1± and Kl–/–; Smad3± mice compared to Kl–/– mice. Western blot analysis confirmed that the inhibition of TGFβ canonical and non-canonical signaling pathways were associated with the rescue of AV calcification of both Kl–/–; Tgfb1± and Kl–/–; Smad3± mice. Conclusion Overall, inhibition of the TGFβ1-dependent SMAD3 signaling pathway significantly blocks the development of AV calcification in Kl–/– mice. This information is useful in understanding the signaling mechanisms involved in CAVD.
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Affiliation(s)
- Mrinmay Chakrabarti
- Department of Cell Biology and Anatomy, School of Medicine, University of South Carolina, Columbia, SC, United States
| | - Aniket Bhattacharya
- Department of Cell Biology and Anatomy, School of Medicine, University of South Carolina, Columbia, SC, United States
- Department of Neuroscience and Cell Biology, Child Health Institute of New Jersey Rutgers-Robert Wood Johnson Medical School, New Brunswick, NJ, United States
| | - Mengistu G. Gebere
- Department of Cell Biology and Anatomy, School of Medicine, University of South Carolina, Columbia, SC, United States
| | - John Johnson
- Department of Cell Biology and Anatomy, School of Medicine, University of South Carolina, Columbia, SC, United States
| | - Zeeshan A. Ayub
- Department of Cell Biology and Anatomy, School of Medicine, University of South Carolina, Columbia, SC, United States
| | - Ioulia Chatzistamou
- Department of Pathology, Microbiology, and Immunology, School of Medicine, University of South Carolina, Columbia, SC, United States
| | | | - Mohamad Azhar
- Department of Cell Biology and Anatomy, School of Medicine, University of South Carolina, Columbia, SC, United States
- William Jennings Bryan Dorn VA Medical Center, Columbia, SC, United States
- *Correspondence: Mohamad Azhar,
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Abstract
Transforming growth factor-β1 (TGF-β1) is inextricably linked to regulatory T cell (Treg) biology. However, precisely untangling the role for TGF-β1 in Treg differentiation and function is complicated by the pleiotropic and context-dependent activity of this cytokine and the multifaceted biology of Tregs. Among CD4+ T cells, Tregs are the major producers of latent TGF-β1 and are uniquely able to activate this cytokine via expression of cell surface docking receptor glycoprotein A repetitions predominant (GARP) and αv integrins. Although a preponderance of evidence indicates no essential roles for Treg-derived TGF-β1 in Treg immunosuppression, TGF-β1 signaling is crucial for Treg development in the thymus and periphery. Furthermore, active TGF-β1 instructs the differentiation of other T cell subsets, including TH17 cells. Here, we will review TGF-β1 signaling in Treg development and function and discuss knowledge gaps, future research, and the TGF-β1/Treg axis in the context of cancer immunotherapy and fibrosis.
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Affiliation(s)
- Joshua M. Moreau
- Department of Dermatology, University of California, San Francisco, San Francisco, CA, USA
| | - Maria Velegraki
- Pelotonia Institute for Immuno-Oncology, the Ohio State University Comprehensive Cancer Center—James Cancer Hospital, Columbus, OH, USA
| | - Chelsea Bolyard
- Pelotonia Institute for Immuno-Oncology, the Ohio State University Comprehensive Cancer Center—James Cancer Hospital, Columbus, OH, USA
| | - Michael D. Rosenblum
- Department of Dermatology, University of California, San Francisco, San Francisco, CA, USA
| | - Zihai Li
- Pelotonia Institute for Immuno-Oncology, the Ohio State University Comprehensive Cancer Center—James Cancer Hospital, Columbus, OH, USA
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7
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Chalmers FE, Dusold JE, Shaik JA, Walsh HA, Glick AB. Targeted deletion of TGFβ1 in basal keratinocytes causes profound defects in stratified squamous epithelia and aberrant melanocyte migration. Dev Biol 2022; 485:9-23. [PMID: 35227671 PMCID: PMC8969113 DOI: 10.1016/j.ydbio.2022.02.009] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2021] [Revised: 02/12/2022] [Accepted: 02/22/2022] [Indexed: 11/29/2022]
Abstract
Transforming Growth Factor Beta 1 (TGFβ1) is a multifunctional cytokine that regulates proliferation, apoptosis, and epithelial-mesenchymal transition of epithelial cells. While its role in cancer is well studied, less is known about TGFβ1 and regulation of epithelial development. To address this, we deleted TGFβ1 in basal keratinocytes of stratified squamous epithelia. Newborn mice with a homozygous TGFβ1 deletion had significant defects in proliferation and differentiation of the epidermis and oral mucosa, and died shortly after birth. Hair follicles were sparse in TGFβ1 depleted skin and had delayed development. Additionally, the Wnt pathway transcription factor LEF1 was reduced in hair follicle bulbs and nearly absent from the basal epithelial layer. Hemizygous knockout mice survived to adulthood but were runted and had sparse coats. The skin of these mice had irregular hair follicle morphology and aberrant hair cycle progression, as well as abnormally high melanin expression and delayed melanocyte migration. In contrast to newborn TGFβ1 null mice, the epidermis was hyperproliferative, acanthotic and inflamed. Expression of p63, a master regulator of stratified epithelial identity, proliferation and differentiation, was reduced in TGFβ1 null newborn epidermis but expanded in the postnatal acanthotic epidermis of TGFβ1 hemizygous mice. Thus, TGFβ1 is both essential and haploinsufficient with context dependent roles in stratified squamous epithelial development and homeostasis.
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Affiliation(s)
- Fiona E Chalmers
- Department of Veterinary and Biomedical Sciences, The Pennsylvania State University, USA
| | - Justyn E Dusold
- Department of Veterinary and Biomedical Sciences, The Pennsylvania State University, USA
| | - Javed A Shaik
- Dermatology Department, University of Minnesota, USA
| | - Hailey A Walsh
- Department of Veterinary and Biomedical Sciences, The Pennsylvania State University, USA
| | - Adam B Glick
- Department of Veterinary and Biomedical Sciences, The Pennsylvania State University, USA.
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Koehler N, Buhler L, Egger B, Gonelle-Gispert C. Multipotent Mesenchymal Stromal Cells Interact and Support Islet of Langerhans Viability and Function. Front Endocrinol (Lausanne) 2022; 13:822191. [PMID: 35222280 PMCID: PMC8864309 DOI: 10.3389/fendo.2022.822191] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/30/2021] [Accepted: 01/13/2022] [Indexed: 11/13/2022] Open
Abstract
Type 1 diabetes (T1D) is a widespread disease, affecting approximately 41.5 million people worldwide. It is generally treated with exogenous insulin, maintaining physiological blood glucose levels but also leading to long-term therapeutic complications. Pancreatic islet cell transplantation offers a potential alternative treatment to insulin injections. Shortage of human organ donors has raised the interest for porcine islet xenotransplantation. Neonatal porcine islets are highly available, can proliferate and mature in vitro as well as after transplantation in vivo. Despite promising preclinical results, delayed insulin secretion caused by immaturity and immunogenicity of the neonatal porcine islets remains a challenge for their clinical application. Multipotent mesenchymal stromal cells (MSCs) are known to have pro-angiogenic, anti-inflammatory and immunomodulatory effects. The current state of research emphasizes the great potential of co-culture and co-transplantation of islet cells with MSCs. Studies have shown enhanced islet proliferation and maturation, insulin secretion and graft survival, resulting in an improved graft outcome. This review summarizes the immunomodulatory and anti-inflammatory properties of MSC in the context of islet transplantation.
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Affiliation(s)
- Naomi Koehler
- Surgical Research Unit, Faculty of Science and Medicine, University of Fribourg, Fribourg, Switzerland
| | - Leo Buhler
- Department of Surgery, Cantonal Hospital Fribourg, Fribourg, Switzerland
| | - Bernhard Egger
- Surgical Research Unit, Faculty of Science and Medicine, University of Fribourg, Fribourg, Switzerland
- Department of Surgery, Cantonal Hospital Fribourg, Fribourg, Switzerland
| | - Carmen Gonelle-Gispert
- Surgical Research Unit, Faculty of Science and Medicine, University of Fribourg, Fribourg, Switzerland
- *Correspondence: Carmen Gonelle-Gispert,
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Stephen-Victor E, Cui Y, Wang Z, Benamar M, Charbonnier LM, Chatila TA. Essential functions of regulatory T cell TGF-β1 revealed by differential gene-targeting approaches. Immunity 2021; 54:397-398. [PMID: 33691127 DOI: 10.1016/j.immuni.2021.02.005] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Emmanuel Stephen-Victor
- Division of Immunology, Boston Children's Hospital, Boston, MA, 02115 USA; Department of Pediatrics, Harvard Medical School, Boston, MA, 02115 USA
| | - Ye Cui
- Division of Immunology, Boston Children's Hospital, Boston, MA, 02115 USA; Department of Pediatrics, Harvard Medical School, Boston, MA, 02115 USA
| | - Ziwei Wang
- Division of Immunology, Boston Children's Hospital, Boston, MA, 02115 USA
| | - Mehdi Benamar
- Division of Immunology, Boston Children's Hospital, Boston, MA, 02115 USA; Department of Pediatrics, Harvard Medical School, Boston, MA, 02115 USA
| | - Louis-Marie Charbonnier
- Division of Immunology, Boston Children's Hospital, Boston, MA, 02115 USA; Department of Pediatrics, Harvard Medical School, Boston, MA, 02115 USA
| | - Talal A Chatila
- Division of Immunology, Boston Children's Hospital, Boston, MA, 02115 USA; Department of Pediatrics, Harvard Medical School, Boston, MA, 02115 USA.
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Velegraki M, Salem M, Ansa-Addo EA, Wu BX, Li Z. Autocrine transforming growth factor β1 in regulatory T cell biology-gone but not missed. Immunity 2021; 54:395-6. [PMID: 33691126 DOI: 10.1016/j.immuni.2021.02.007] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2020] [Accepted: 02/10/2021] [Indexed: 12/11/2022]
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Choi G, Kim BS, Chang JH, Chung Y. Defining the role of transforming growth factor β1 in Foxp3 + T regulatory cells. Immunity 2021; 54:393-394. [PMID: 33691125 DOI: 10.1016/j.immuni.2021.02.008] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2020] [Accepted: 02/10/2021] [Indexed: 02/04/2023]
Affiliation(s)
- Garam Choi
- Laboratory of Immune Regulation, Research Institute of Pharmaceutical Sciences, College of Pharmacy, Seoul National University, Seoul 08826, Republic of Korea
| | - Byung-Seok Kim
- Laboratory of Immune Regulation, Research Institute of Pharmaceutical Sciences, College of Pharmacy, Seoul National University, Seoul 08826, Republic of Korea; Division of Life Sciences, College of Life Science and Bioengineering, Incheon National University, Incheon 22012, Republic of Korea
| | - Jae-Hoon Chang
- College of Pharmacy, Yeungnam University, Gyeongsan, Gyeongbuk 38541, Republic of Korea
| | - Yeonseok Chung
- Laboratory of Immune Regulation, Research Institute of Pharmaceutical Sciences, College of Pharmacy, Seoul National University, Seoul 08826, Republic of Korea.
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Branchett WJ, Cook J, Oliver RA, Bruno N, Walker SA, Stölting H, Mack M, O'Garra A, Saglani S, Lloyd CM. Airway macrophage-intrinsic TGF-β1 regulates pulmonary immunity during early-life allergen exposure. J Allergy Clin Immunol 2021; 147:1892-1906. [PMID: 33571538 PMCID: PMC8098862 DOI: 10.1016/j.jaci.2021.01.026] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [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: 08/17/2020] [Revised: 01/16/2021] [Accepted: 01/22/2021] [Indexed: 12/22/2022]
Abstract
BACKGROUND Early life represents a major risk window for asthma development. However, the mechanisms controlling the threshold for establishment of allergic airway inflammation in early life are incompletely understood. Airway macrophages (AMs) regulate pulmonary allergic responses and undergo TGF-β-dependent postnatal development, but the role of AM maturation factors such as TGF-β in controlling the threshold for pathogenic immune responses to inhaled allergens remains unclear. OBJECTIVE Our aim was to test the hypothesis that AM-derived TGF-β1 regulates pathogenic immunity to inhaled allergen in early life. METHODS Conditional knockout (Tgfb1ΔCD11c) mice, with TGF-β1 deficiency in AMs and other CD11c+ cells, were analyzed throughout early life and following neonatal house dust mite (HDM) inhalation. The roles of specific chemokine receptors were determined by using in vivo blocking antibodies. RESULTS AM-intrinsic TGF-β1 was redundant for initial population of the neonatal lung with AMs, but AMs from Tgfb1ΔCD11c mice failed to adopt a mature homeostatic AM phenotype in the first weeks of life. Evidence of constitutive TGF-β1 signaling was also observed in pediatric human AMs. TGF-β1-deficient AMs expressed enhanced levels of monocyte-attractant chemokines, and accordingly, Tgfb1ΔCD11c mice exposed to HDM throughout early life accumulated CCR2-dependent inflammatory CD11c+ mononuclear phagocytes into the airway niche that expressed the proallergic chemokine CCL8. Tgfb1ΔCD11c mice displayed augmented TH2, group 2 innate lymphoid cell, and airway remodeling responses to HDM, which were ameliorated by blockade of the CCL8 receptor CCR8. CONCLUSION Our results highlight a causal relationship between AM maturity, chemokines, and pathogenic immunity to environmental stimuli in early life and identify TGF-β1 as a key regulator of this.
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Affiliation(s)
- William J Branchett
- National Heart and Lung Institute, Faculty of Medicine, Imperial College London, London, United Kingdom
| | - James Cook
- National Heart and Lung Institute, Faculty of Medicine, Imperial College London, London, United Kingdom; Department of Paediatric Respiratory Medicine, Royal Brompton Hospital, London, United Kingdom
| | - Robert A Oliver
- National Heart and Lung Institute, Faculty of Medicine, Imperial College London, London, United Kingdom
| | - Nicoletta Bruno
- National Heart and Lung Institute, Faculty of Medicine, Imperial College London, London, United Kingdom
| | - Simone A Walker
- National Heart and Lung Institute, Faculty of Medicine, Imperial College London, London, United Kingdom
| | - Helen Stölting
- National Heart and Lung Institute, Faculty of Medicine, Imperial College London, London, United Kingdom
| | - Matthias Mack
- Department of Internal Medicine II- Nephrology, University Hospital Regensburg, Regensburg, Germany
| | - Anne O'Garra
- National Heart and Lung Institute, Faculty of Medicine, Imperial College London, London, United Kingdom; Laboratory of Immunoregulation and Infection, The Francis Crick Institute, London, United Kingdom
| | - Sejal Saglani
- National Heart and Lung Institute, Faculty of Medicine, Imperial College London, London, United Kingdom; Department of Paediatric Respiratory Medicine, Royal Brompton Hospital, London, United Kingdom
| | - Clare M Lloyd
- National Heart and Lung Institute, Faculty of Medicine, Imperial College London, London, United Kingdom.
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13
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Seed RI, Kobayashi K, Ito S, Takasaka N, Cormier A, Jespersen JM, Publicover J, Trilok S, Combes AJ, Chew NW, Chapman J, Krummel MF, Lou J, Marks J, Cheng Y, Baron JL, Nishimura SL. A tumor-specific mechanism of T reg enrichment mediated by the integrin αvβ8. Sci Immunol 2021; 6:6/57/eabf0558. [PMID: 33771888 DOI: 10.1126/sciimmunol.abf0558] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2020] [Revised: 01/06/2021] [Accepted: 02/24/2021] [Indexed: 12/14/2022]
Abstract
Regulatory T cells (Tregs) that promote tumor immune evasion are enriched in certain tumors and correlate with poor prognosis. However, mechanisms for Treg enrichment remain incompletely understood. We described a mechanism for Treg enrichment in mouse and human tumors mediated by the αvβ8 integrin. Tumor cell αvβ8 bound to latent transforming growth factor-β (L-TGF-β) presented on the surface of T cells, resulting in TGF-β activation and immunosuppressive Treg differentiation in vitro. In vivo, tumor cell αvβ8 expression correlated with Treg enrichment, immunosuppressive Treg gene expression, and increased tumor growth, which was reduced in mice by αvβ8 inhibition or Treg depletion. Structural modeling and cell-based studies suggested a highly geometrically constrained complex forming between αvβ8-expressing tumor cells and L-TGF-β-expressing T cells, facilitating TGF-β activation, independent of release and diffusion, and providing limited access to TGF-β inhibitors. These findings suggest a highly localized tumor-specific mechanism for Treg enrichment.
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Affiliation(s)
- Robert I Seed
- Department of Pathology, University of California, San Francisco, San Francisco, CA 94110, USA
| | - Kenji Kobayashi
- Department of Pathology, University of California, San Francisco, San Francisco, CA 94110, USA
| | - Saburo Ito
- Department of Pathology, University of California, San Francisco, San Francisco, CA 94110, USA
| | - Naoki Takasaka
- Department of Pathology, University of California, San Francisco, San Francisco, CA 94110, USA
| | - Anthony Cormier
- Department of Pathology, University of California, San Francisco, San Francisco, CA 94110, USA
| | - Jillian M Jespersen
- Department of Medicine and Liver Center, University of California, San Francisco, San Francisco, CA 94143, USA
| | - Jean Publicover
- Department of Medicine and Liver Center, University of California, San Francisco, San Francisco, CA 94143, USA
| | - Suprita Trilok
- Department of Medicine and Liver Center, University of California, San Francisco, San Francisco, CA 94143, USA
| | - Alexis J Combes
- Department of Pathology, University of California, San Francisco, San Francisco, CA 94110, USA.,ImmunoX Initiative, University of California, San Francisco, San Francisco, CA 94143, USA.,ImmunoX CoLabs, University of California San Francisco, San Francisco, CA 94143, USA
| | - Nayvin W Chew
- Department of Pathology, University of California, San Francisco, San Francisco, CA 94110, USA.,ImmunoX Initiative, University of California, San Francisco, San Francisco, CA 94143, USA.,ImmunoX CoLabs, University of California San Francisco, San Francisco, CA 94143, USA
| | - Jocelyne Chapman
- Department of Gynecology and Oncology, University of California, San Francisco San Francisco, CA 94110, USA
| | - Matthew F Krummel
- Department of Pathology, University of California, San Francisco, San Francisco, CA 94110, USA.,ImmunoX Initiative, University of California, San Francisco, San Francisco, CA 94143, USA
| | - Jianlong Lou
- Department of Anesthesia and Perioperative Care, University of California, San Francisco, San Francisco, CA 94110, USA
| | - James Marks
- Department of Anesthesia and Perioperative Care, University of California, San Francisco, San Francisco, CA 94110, USA
| | - Yifan Cheng
- Department of Biochemistry and Biophysics, University of California, San Francisco, San Francisco, CA 94158, USA.,Howard Hughes Medical Institute, University of California, San Francisco, San Francisco, CA 94158, USA
| | - Jody L Baron
- Department of Medicine and Liver Center, University of California, San Francisco, San Francisco, CA 94143, USA.,ImmunoX Initiative, University of California, San Francisco, San Francisco, CA 94143, USA
| | - Stephen L Nishimura
- Department of Pathology, University of California, San Francisco, San Francisco, CA 94110, USA. .,ImmunoX Initiative, University of California, San Francisco, San Francisco, CA 94143, USA
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14
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Di Giandomenico S, Kermani P, Mollé N, Yabut MM, Abu-Zeinah G, Stephens T, Messali N, Schreiner R, Brenet F, Rafii S, Scandura JM. Megakaryocyte TGFβ1 partitions erythropoiesis into immature progenitor/stem cells and maturing precursors. Blood 2020; 136:1044-54. [PMID: 32548608 DOI: 10.1182/blood.2019003276] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2019] [Accepted: 05/01/2020] [Indexed: 01/06/2023] Open
Abstract
Erythropoietin (EPO) provides the major survival signal to maturing erythroid precursors (EPs) and is essential for terminal erythropoiesis. Nonetheless, progenitor cells can irreversibly commit to an erythroid fate well before EPO acts, risking inefficiency if these progenitors are unneeded to maintain red blood cell (RBC) counts. We identified a new modular organization of erythropoiesis and, for the first time, demonstrate that the pre-EPO module is coupled to late EPO-dependent erythropoiesis by megakaryocyte (Mk) signals. Disrupting megakaryocytic transforming growth factor β1 (Tgfb1) disorganized hematopoiesis by expanding the pre-EPO pool of progenitor cells and consequently triggering significant apoptosis of EPO-dependent EPs. Similarly, pharmacologic blockade of TGFβ signaling in normal mice boosted the pre-EPO module, leading to apoptosis of EPO-sensitive EPs. Subsequent treatment with low-dose EPO triggered robust RBC production in both models. This work reveals modular regulation of erythropoiesis and offers a new strategy for overcoming chronic anemias.
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15
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Turner JA, Stephen-Victor E, Wang S, Rivas MN, Abdel-Gadir A, Harb H, Cui Y, Fanny M, Charbonnier LM, Fong JJH, Benamar M, Wang L, Burton OT, Bansal K, Bry L, Zhu C, Li QZ, Clement RL, Oettgen HC, Crestani E, Rachid R, Sage PT, Chatila TA. Regulatory T Cell-Derived TGF-β1 Controls Multiple Checkpoints Governing Allergy and Autoimmunity. Immunity 2020; 53:1202-1214.e6. [PMID: 33086036 DOI: 10.1016/j.immuni.2020.10.002] [Citation(s) in RCA: 62] [Impact Index Per Article: 15.5] [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: 01/29/2020] [Revised: 06/29/2020] [Accepted: 09/30/2020] [Indexed: 02/07/2023]
Abstract
The mechanisms by which regulatory T (Treg) cells differentially control allergic and autoimmune responses remain unclear. We show that Treg cells in food allergy (FA) had decreased expression of transforming growth factor beta 1 (TGF-β1) because of interleukin-4 (IL-4)- and signal transducer and activator of transciription-6 (STAT6)-dependent inhibition of Tgfb1 transcription. These changes were modeled by Treg cell-specific Tgfb1 monoallelic inactivation, which induced allergic dysregulation by impairing microbiota-dependent retinoic acid receptor-related orphan receptor gamma t (ROR-γt)+ Treg cell differentiation. This dysregulation was rescued by treatment with Clostridiales species, which upregulated Tgfb1 expression in Treg cells. Biallelic deficiency precipitated fatal autoimmunity with intense autoantibody production and dysregulated T follicular helper and B cell responses. These results identify a privileged role of Treg cell-derived TGF-β1 in regulating allergy and autoimmunity at distinct checkpoints in a Tgfb1 gene dose- and microbiota-dependent manner.
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Affiliation(s)
- Jacob A Turner
- Division of Immunology, Boston Children's Hospital, Boston, MA 02115, USA; Department of Pediatrics, Harvard Medical School, Boston, MA 02115, USA
| | - Emmanuel Stephen-Victor
- Division of Immunology, Boston Children's Hospital, Boston, MA 02115, USA; Department of Pediatrics, Harvard Medical School, Boston, MA 02115, USA
| | - Sen Wang
- Division of Immunology, Boston Children's Hospital, Boston, MA 02115, USA; Department of Pediatrics, Harvard Medical School, Boston, MA 02115, USA
| | - Magali Noval Rivas
- Division of Pediatric Infectious Diseases and Immunology, Department of Biomedical Sciences, Infectious and Immunologic Diseases Research Center (IIDRC), Cedars-Sinai Medical Center, Los Angeles, CA 90048, USA
| | - Azza Abdel-Gadir
- Division of Immunology, Boston Children's Hospital, Boston, MA 02115, USA; Department of Pediatrics, Harvard Medical School, Boston, MA 02115, USA
| | - Hani Harb
- Division of Immunology, Boston Children's Hospital, Boston, MA 02115, USA; Department of Pediatrics, Harvard Medical School, Boston, MA 02115, USA
| | - Ye Cui
- Division of Immunology, Boston Children's Hospital, Boston, MA 02115, USA; Department of Pediatrics, Harvard Medical School, Boston, MA 02115, USA
| | - Manoussa Fanny
- Division of Immunology, Boston Children's Hospital, Boston, MA 02115, USA; Department of Pediatrics, Harvard Medical School, Boston, MA 02115, USA
| | - Louis-Marie Charbonnier
- Division of Immunology, Boston Children's Hospital, Boston, MA 02115, USA; Department of Pediatrics, Harvard Medical School, Boston, MA 02115, USA
| | - Jason Jun Hung Fong
- Division of Immunology, Boston Children's Hospital, Boston, MA 02115, USA; Department of Pediatrics, Harvard Medical School, Boston, MA 02115, USA
| | - Mehdi Benamar
- Division of Immunology, Boston Children's Hospital, Boston, MA 02115, USA; Department of Pediatrics, Harvard Medical School, Boston, MA 02115, USA
| | - Leighanne Wang
- Division of Immunology, Boston Children's Hospital, Boston, MA 02115, USA; Department of Pediatrics, Harvard Medical School, Boston, MA 02115, USA
| | - Oliver T Burton
- Laboratory of Lymphocyte Signaling and Development, The Babraham Institute, Cambridgeshire CB22 3AT, UK
| | - Kushagra Bansal
- Molecular Biology & Genetics Unit, Jawaharlal Nehru Centre for Advanced Scientific Research, Jakkur, Bangalore 560064, India
| | - Lynn Bry
- Massachusetts Host-Microbiome Center, Department of Pathology, Brigham & Women's Hospital, Harvard Medical School, Boston, MA 02115, USA
| | - Chengsong Zhu
- Department of Immunology and Internal Medicine, University of Texas Southwestern Medical Center, Dallas, TX 75390, USA
| | - Quan-Zhen Li
- Department of Immunology and Internal Medicine, University of Texas Southwestern Medical Center, Dallas, TX 75390, USA
| | - Rachel L Clement
- Transplantation Research Center, Renal Division, Brigham and Women's Hospital, Harvard Medical School, Boston, MA 02115, USA
| | - Hans C Oettgen
- Division of Immunology, Boston Children's Hospital, Boston, MA 02115, USA; Department of Pediatrics, Harvard Medical School, Boston, MA 02115, USA
| | - Elena Crestani
- Division of Immunology, Boston Children's Hospital, Boston, MA 02115, USA; Department of Pediatrics, Harvard Medical School, Boston, MA 02115, USA
| | - Rima Rachid
- Division of Immunology, Boston Children's Hospital, Boston, MA 02115, USA; Department of Pediatrics, Harvard Medical School, Boston, MA 02115, USA
| | - Peter T Sage
- Transplantation Research Center, Renal Division, Brigham and Women's Hospital, Harvard Medical School, Boston, MA 02115, USA
| | - Talal A Chatila
- Division of Immunology, Boston Children's Hospital, Boston, MA 02115, USA; Department of Pediatrics, Harvard Medical School, Boston, MA 02115, USA.
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16
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Ferreira C, Barros L, Baptista M, Blankenhaus B, Barros A, Figueiredo-Campos P, Konjar Š, Lainé A, Kamenjarin N, Stojanovic A, Cerwenka A, Probst HC, Marie JC, Veldhoen M. Type 1 T reg cells promote the generation of CD8 + tissue-resident memory T cells. Nat Immunol 2020; 21:766-76. [PMID: 32424367 DOI: 10.1038/s41590-020-0674-9] [Citation(s) in RCA: 55] [Impact Index Per Article: 13.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2019] [Accepted: 03/30/2020] [Indexed: 12/22/2022]
Abstract
Tissue-resident memory T (TRM) cells, functionally distinct from circulating memory T cells, have a critical role in protective immunity in tissues, are more efficacious when elicited after vaccination and yield more effective antitumor immunity, yet the signals that direct development of TRM cells are incompletely understood. Here we show that type 1 regulatory T (Treg) cells, which express the transcription factor T-bet, promote the generation of CD8+ TRM cells. The absence of T-bet-expressing type 1 Treg cells reduces the presence of TRM cells in multiple tissues and increases pathogen burden upon infectious challenge. Using infection models, we show that type 1 Treg cells are specifically recruited to local inflammatory sites via the chemokine receptor CXCR3. Close proximity with effector CD8+ T cells and Treg cell expression of integrin-β8 endows the bioavailability of transforming growth factor-β in the microenvironment, thereby promoting the generation of CD8+ TRM cells.
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17
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Bochenek ML, Leidinger C, Rosinus NS, Gogiraju R, Guth S, Hobohm L, Jurk K, Mayer E, Münzel T, Lankeit M, Bosmann M, Konstantinides S, Schäfer K. Activated Endothelial TGFβ1 Signaling Promotes Venous Thrombus Nonresolution in Mice Via Endothelin-1: Potential Role for Chronic Thromboembolic Pulmonary Hypertension. Circ Res 2019; 126:162-181. [PMID: 31747868 DOI: 10.1161/circresaha.119.315259] [Citation(s) in RCA: 31] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
RATIONALE Chronic thromboembolic pulmonary hypertension (CTEPH) is characterized by defective thrombus resolution, pulmonary artery obstruction, and vasculopathy. TGFβ (transforming growth factor-β) signaling mutations have been implicated in pulmonary arterial hypertension, whereas the role of TGFβ in the pathophysiology of CTEPH is unknown. OBJECTIVE To determine whether defective TGFβ signaling in endothelial cells contributes to thrombus nonresolution and fibrosis. METHODS AND RESULTS Venous thrombosis was induced by inferior vena cava ligation in mice with genetic deletion of TGFβ1 in platelets (Plt.TGFβ-KO) or TGFβ type II receptors in endothelial cells (End.TGFβRII-KO). Pulmonary endarterectomy specimens from CTEPH patients were analyzed using immunohistochemistry. Primary human and mouse endothelial cells were studied using confocal microscopy, quantitative polymerase chain reaction, and Western blot. Absence of TGFβ1 in platelets did not alter platelet number or function but was associated with faster venous thrombus resolution, whereas endothelial TGFβRII deletion resulted in larger, more fibrotic and higher vascularized venous thrombi. Increased circulating active TGFβ1 levels, endothelial TGFβRI/ALK1 (activin receptor-like kinase), and TGFβRI/ALK5 expression were detected in End.TGFβRII-KO mice, and activated TGFβ signaling was present in vessel-rich areas of CTEPH specimens. CTEPH-endothelial cells and murine endothelial cells lacking TGFβRII simultaneously expressed endothelial and mesenchymal markers and transcription factors regulating endothelial-to-mesenchymal transition, similar to TGFβ1-stimulated endothelial cells. Mechanistically, increased endothelin-1 levels were detected in TGFβRII-KO endothelial cells, murine venous thrombi, or endarterectomy specimens and plasma of CTEPH patients, and endothelin-1 overexpression was prevented by inhibition of ALK5, and to a lesser extent of ALK1. ALK5 inhibition and endothelin receptor antagonization inhibited mesenchymal lineage conversion in TGFβ1-exposed human and murine endothelial cells and improved venous thrombus resolution and pulmonary vaso-occlusions in End.TGFβRII-KO mice. CONCLUSIONS Endothelial TGFβ1 signaling via type I receptors and endothelin-1 contribute to mesenchymal lineage transition and thrombofibrosis, which were prevented by blocking endothelin receptors. Our findings may have relevant implications for the prevention and management of CTEPH.
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Affiliation(s)
- Magdalena L Bochenek
- From the Center for Cardiology, Cardiology I (M.L.B., C.L., N.S.R., R.G., L.H., T.M., K.S.), University Medical Center Mainz, Germany.,Center for Thrombosis and Hemostasis (M.L.B., L.H., K.J., M.L., M.B., S.K.), University Medical Center Mainz, Germany.,German Center for Cardiovascular Research (DZHK e.V.; RheinMain) (M.L.B., N.S.R., R.G., E.M., T.M., K.S.)
| | - Christiane Leidinger
- From the Center for Cardiology, Cardiology I (M.L.B., C.L., N.S.R., R.G., L.H., T.M., K.S.), University Medical Center Mainz, Germany
| | - Nico S Rosinus
- From the Center for Cardiology, Cardiology I (M.L.B., C.L., N.S.R., R.G., L.H., T.M., K.S.), University Medical Center Mainz, Germany.,German Center for Cardiovascular Research (DZHK e.V.; RheinMain) (M.L.B., N.S.R., R.G., E.M., T.M., K.S.)
| | - Rajinikanth Gogiraju
- From the Center for Cardiology, Cardiology I (M.L.B., C.L., N.S.R., R.G., L.H., T.M., K.S.), University Medical Center Mainz, Germany.,German Center for Cardiovascular Research (DZHK e.V.; RheinMain) (M.L.B., N.S.R., R.G., E.M., T.M., K.S.)
| | - Stefan Guth
- Thoracic Surgery, Kerckhoff Clinic, Bad Nauheim, Germany (S.G., E.M.)
| | - Lukas Hobohm
- From the Center for Cardiology, Cardiology I (M.L.B., C.L., N.S.R., R.G., L.H., T.M., K.S.), University Medical Center Mainz, Germany.,Center for Thrombosis and Hemostasis (M.L.B., L.H., K.J., M.L., M.B., S.K.), University Medical Center Mainz, Germany
| | - Kerstin Jurk
- Center for Thrombosis and Hemostasis (M.L.B., L.H., K.J., M.L., M.B., S.K.), University Medical Center Mainz, Germany
| | - Eckhard Mayer
- Thoracic Surgery, Kerckhoff Clinic, Bad Nauheim, Germany (S.G., E.M.).,German Center for Cardiovascular Research (DZHK e.V.; RheinMain) (M.L.B., N.S.R., R.G., E.M., T.M., K.S.)
| | - Thomas Münzel
- From the Center for Cardiology, Cardiology I (M.L.B., C.L., N.S.R., R.G., L.H., T.M., K.S.), University Medical Center Mainz, Germany.,German Center for Cardiovascular Research (DZHK e.V.; RheinMain) (M.L.B., N.S.R., R.G., E.M., T.M., K.S.)
| | - Mareike Lankeit
- Center for Thrombosis and Hemostasis (M.L.B., L.H., K.J., M.L., M.B., S.K.), University Medical Center Mainz, Germany.,Department of Internal Medicine and Cardiology, Campus Virchow Klinikum, Charité -University Medicine, Berlin, Germany (M.L.)
| | - Markus Bosmann
- Center for Thrombosis and Hemostasis (M.L.B., L.H., K.J., M.L., M.B., S.K.), University Medical Center Mainz, Germany.,Department of Medicine, Boston University School of Medicine, MA (M.B.)
| | - Stavros Konstantinides
- Center for Thrombosis and Hemostasis (M.L.B., L.H., K.J., M.L., M.B., S.K.), University Medical Center Mainz, Germany.,Department of Cardiology, Democritus University of Thrace, Alexandroupolis, Greece (S.K.)
| | - Katrin Schäfer
- From the Center for Cardiology, Cardiology I (M.L.B., C.L., N.S.R., R.G., L.H., T.M., K.S.), University Medical Center Mainz, Germany.,German Center for Cardiovascular Research (DZHK e.V.; RheinMain) (M.L.B., N.S.R., R.G., E.M., T.M., K.S.)
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18
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Takahashi H, Alves CRR, Stanford KI, Middelbeek RJW, Pasquale Nigro, Ryan RE, Xue R, Sakaguchi M, Lynes MD, So K, Mul JD, Lee MY, Balan E, Pan H, Dreyfuss JM, Hirshman MF, Azhar M, Hannukainen JC, Nuutila P, Kalliokoski KK, Nielsen S, Pedersen BK, Kahn CR, Tseng YH, Goodyear LJ. TGF-β2 is an exercise-induced adipokine that regulates glucose and fatty acid metabolism. Nat Metab 2019; 1:291-303. [PMID: 31032475 PMCID: PMC6481955 DOI: 10.1038/s42255-018-0030-7] [Citation(s) in RCA: 119] [Impact Index Per Article: 23.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Exercise improves health and well-being across diverse organ systems, and elucidating mechanisms underlying the beneficial effects of exercise can lead to new therapies. Here, we show that transforming growth factor-β2 (TGF-β2) is secreted from adipose tissue in response to exercise and improves glucose tolerance in mice. We identify TGF-β2 as an exercise-induced adipokine in a gene expression analysis of human subcutaneous adipose tissue biopsies after exercise training. In mice, exercise training increases TGF-β2 in scWAT, serum, and its secretion from fat explants. Transplanting scWAT from exercise-trained wild type mice, but not from adipose tissue-specific Tgfb2−/− mice, into sedentary mice improves glucose tolerance. TGF-β2 treatment reverses the detrimental metabolic effects of high fat feeding in mice. Lactate, a metabolite released from muscle during exercise, stimulates TGF-β2 expression in human adipocytes. Administration of the lactate-lowering agent dichloroacetate during exercise training in mice decreases circulating TGF-β2 levels and reduces exercise-stimulated improvements in glucose tolerance. Thus, exercise training improves systemic metabolism through inter-organ communication with fat via a lactate-TGF-β2-signaling cycle.
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Affiliation(s)
- Hirokazu Takahashi
- Section on Integrative Physiology and Metabolism, Joslin Diabetes Center, Harvard Medical School, Boston, Massachusetts, USA
| | - Christiano R R Alves
- Section on Integrative Physiology and Metabolism, Joslin Diabetes Center, Harvard Medical School, Boston, Massachusetts, USA
| | - Kristin I Stanford
- Section on Integrative Physiology and Metabolism, Joslin Diabetes Center, Harvard Medical School, Boston, Massachusetts, USA.,Department of Physiology and Cell Biology, Dorothy M. Davis Heart and Lung Research Institute, The Ohio State University Wexner Medical Center, Columbus, Ohio, USA
| | - Roeland J W Middelbeek
- Section on Integrative Physiology and Metabolism, Joslin Diabetes Center, Harvard Medical School, Boston, Massachusetts, USA
| | - Pasquale Nigro
- Section on Integrative Physiology and Metabolism, Joslin Diabetes Center, Harvard Medical School, Boston, Massachusetts, USA
| | - Rebecca E Ryan
- Section on Integrative Physiology and Metabolism, Joslin Diabetes Center, Harvard Medical School, Boston, Massachusetts, USA
| | - Ruidan Xue
- Section on Integrative Physiology and Metabolism, Joslin Diabetes Center, Harvard Medical School, Boston, Massachusetts, USA
| | - Masaji Sakaguchi
- Section on Integrative Physiology and Metabolism, Joslin Diabetes Center, Harvard Medical School, Boston, Massachusetts, USA
| | - Matthew D Lynes
- Section on Integrative Physiology and Metabolism, Joslin Diabetes Center, Harvard Medical School, Boston, Massachusetts, USA
| | - Kawai So
- Section on Integrative Physiology and Metabolism, Joslin Diabetes Center, Harvard Medical School, Boston, Massachusetts, USA
| | - Joram D Mul
- Section on Integrative Physiology and Metabolism, Joslin Diabetes Center, Harvard Medical School, Boston, Massachusetts, USA
| | - Min-Young Lee
- Section on Integrative Physiology and Metabolism, Joslin Diabetes Center, Harvard Medical School, Boston, Massachusetts, USA
| | - Estelle Balan
- Section on Integrative Physiology and Metabolism, Joslin Diabetes Center, Harvard Medical School, Boston, Massachusetts, USA
| | - Hui Pan
- Bioinformatics Core, Joslin Diabetes Center, Harvard Medical School, Boston, Massachusetts, USA
| | - Jonathan M Dreyfuss
- Bioinformatics Core, Joslin Diabetes Center, Harvard Medical School, Boston, Massachusetts, USA
| | - Michael F Hirshman
- Section on Integrative Physiology and Metabolism, Joslin Diabetes Center, Harvard Medical School, Boston, Massachusetts, USA
| | - Mohamad Azhar
- Department of Cell Biology & Anatomy, School of Medicine, University of South Carolina, Columbia, SC, USA
| | | | - Pirjo Nuutila
- Turku PET Centre, University of Turku, Turku, Finland
| | | | - Søren Nielsen
- The Centre of Inflammation and Metabolism and the Centre for Physical Activity Research, Rigshospitalet, University of Copenhagen, Denmark
| | - Bente K Pedersen
- The Centre of Inflammation and Metabolism and the Centre for Physical Activity Research, Rigshospitalet, University of Copenhagen, Denmark
| | - C Ronald Kahn
- Section on Integrative Physiology and Metabolism, Joslin Diabetes Center, Harvard Medical School, Boston, Massachusetts, USA
| | - Yu-Hua Tseng
- Section on Integrative Physiology and Metabolism, Joslin Diabetes Center, Harvard Medical School, Boston, Massachusetts, USA
| | - Laurie J Goodyear
- Section on Integrative Physiology and Metabolism, Joslin Diabetes Center, Harvard Medical School, Boston, Massachusetts, USA
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19
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Ghafoory S, Varshney R, Robison T, Kouzbari K, Woolington S, Murphy B, Xia L, Ahamed J. Platelet TGF-β1 deficiency decreases liver fibrosis in a mouse model of liver injury. Blood Adv 2018; 2:470-80. [PMID: 29490978 DOI: 10.1182/bloodadvances.2017010868] [Citation(s) in RCA: 61] [Impact Index Per Article: 12.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2017] [Accepted: 01/31/2018] [Indexed: 12/11/2022] Open
Abstract
Transforming growth factor-β1 (TGF-β1) signaling in hepatic stellate cells (HSCs) plays a primary role in liver fibrosis, but the source of TGF-β1 is unclear. Because platelets are rich in TGF-β1, we examined the role of platelet TGF-β1 in liver fibrosis by challenging wild-type (WT) mice and mice deficient in platelet TGF-β1 (PF4CreTgfb1f/f) with carbon tetrachloride (CCl4), an inducer of acute hepatic injury and chronic fibrosis. CCl4 elicited equivalent hepatic injury in WT and PF4CreTgfb1f/f mice based on loss of cytochrome P450 (Cyp2e1) expression, observed at 6 hours and peaking at 3 days after CCl4 challenge; PF4CreTgfb1f/f mice exhibited less liver fibrosis than control mice. Activated platelets were observed during acute liver injury (6 hours), and WT mice with transient platelet depletion (thrombocytopenia) were partially protected from developing fibrosis compared with control mice (P = .01), suggesting an association between platelet activation and fibrosis. Transient increases in TGF-β1 levels and Smad2 phosphorylation signaling were observed 6 hours and 3 days, respectively, after CCl4 challenge in WT, but not PF4CreTgfb1f/f , mice, suggesting that increased TGF-β1 levels originated from platelet-released TGF-β1 during the initial injury. Numbers of collagen-producing HSCs and myofibroblasts were higher at 3 days and 36 days, respectively, in WT vs PF4CreTgfb1f/f mice, suggesting that platelet TGF-β1 may have stimulated HSC transdifferentiation into myofibroblasts. Thus, platelet TGF-β1 partially contributes to liver fibrosis, most likely by initiating profibrotic signaling in HSCs and collagen synthesis. Further studies are required to evaluate whether blocking platelet and TGF-β1 activation during acute liver injury prevents liver fibrosis.
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20
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Silva WN, Leonel C, Prazeres PHDM, Sena IFG, Guerra DAP, Heller D, Diniz IMA, Fortuna V, Mintz A, Birbrair A. Role of Schwann cells in cutaneous wound healing. Wound Repair Regen 2018; 26:392-397. [PMID: 30098299 PMCID: PMC6289698 DOI: 10.1111/wrr.12647] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [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: 04/05/2018] [Accepted: 06/01/2018] [Indexed: 12/20/2022]
Abstract
Dermal wound healing is the process of repairing and remodeling skin following injury. Delayed or aberrant cutaneous healing poses a challenge for the health care system. The lack of detailed understanding of cellular and molecular mechanisms involved in this process hampers the development of effective targeted treatments. In a recent study, Parfejevs et al.-using state-of-the-art technologies, including in vivo sophisticated Cre/loxP techniques in combination with a mouse model of excisional cutaneous wounding-reveal that Schwann cells induce adult dermal wound healing. Strikingly, genetic ablation of Schwann cells delays wound contraction and closure, decreases myofibroblast formation, and impairs skin re-epithelization after injury. From a drug development perspective, Schwann cells are a new cellular candidate to be activated to accelerate skin healing. Here, we summarize and evaluate recent advances in the understanding of Schwann cells roles in the skin microenvironment.
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Affiliation(s)
- Walison N. Silva
- Department of Pathology, Federal University of Minas Gerais, Belo Horizonte, MG, Brazil
| | - Caroline Leonel
- Department of Pathology, Federal University of Minas Gerais, Belo Horizonte, MG, Brazil
| | | | - Isadora F. G. Sena
- Department of Pathology, Federal University of Minas Gerais, Belo Horizonte, MG, Brazil
| | - Daniel A. P. Guerra
- Department of Pathology, Federal University of Minas Gerais, Belo Horizonte, MG, Brazil
| | - Debora Heller
- Experimental Research Center, Albert Einstein Israeli Hospital, São Paulo, SP, Brazil
- School of Dentistry, Cruzeiro do Sul University, São Paulo, SP, Brazil
| | - Ivana M. A. Diniz
- Department of Restorative Dentistry, Federal University of Minas Gerais, Belo Horizonte, MG, Brazil
| | - Vitor Fortuna
- Health Science Institute, Federal University of Bahia, Salvador, BA, Brazil
| | - Akiva Mintz
- Department of Radiology, Columbia University Medical Center, New York, NY, USA
| | - Alexander Birbrair
- Department of Pathology, Federal University of Minas Gerais, Belo Horizonte, MG, Brazil
- Department of Radiology, Columbia University Medical Center, New York, NY, USA
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21
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Schütz E, Bochenek ML, Riehl DR, Bosmann M, Münzel T, Konstantinides S, Schäfer K. Absence of transforming growth factor beta 1 in murine platelets reduces neointima formation without affecting arterial thrombosis. Thromb Haemost 2018; 117:1782-1797. [PMID: 28726976 DOI: 10.1160/th17-02-0112] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [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: 02/17/2017] [Accepted: 06/11/2017] [Indexed: 12/15/2022]
Abstract
Platelet degranulation at the site of vascular injury prevents bleeding and may affect the chronic vascular wound healing response. Transforming Growth Factor (TGF)-β1 is a major component of platelet α-granules known to accumulating in thrombi. It was our aim to determine the role of TGFβ1 released from activated platelets for neointima formation following arterial injury and thrombosis. Mice with platelet-specific deletion of TGFβ1 (Plt.TGFβ-KO) underwent carotid artery injury. Immunoassays confirmed the absence of active TGFβ1 in platelet releasates and plasma of Plt.TGFβ-KO mice. Whole blood analyses revealed similar haematological parameters, and tail cut assays excluded major bleeding defects. Platelet aggregation and the acute thrombotic response to injury in vivo did not differ between Plt.TGFβ-KO and Plt.TGFβ-WT mice. Morphometric analysis revealed that absence of TGFβ1 in platelets resulted in a significant reduction of neointima formation with lower neointima area, intima-to-media ratio, and lumen stenosis. On the other hand, the media area was enlarged in mice lacking TGFβ1 in platelets and contained increased amounts of proteases involved in latent TGFβ activation, including MMP2, MMP9 and thrombin. Significantly increased numbers of proliferating cells and cells expressing the mesenchymal markers platelet-derived growth factor receptor-β or fibroblast-specific protein-1, and the macrophage antigen F4/80, were observed in the media of Plt.TGFβ-KO mice, whereas the medial smooth muscle-actin-immunopositive area and collagen content did not differ between genotypes. Our findings support an essential role for platelet-derived TGFβ1 for the vascular remodelling response to arterial injury, apparently independent from the role of platelets in thrombosis or haemostasis.
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Affiliation(s)
| | | | | | | | | | | | - Katrin Schäfer
- Katrin Schäfer, MD, FESC, FAHA, Center for Cardiology, Cardiology I, University Medical Center Mainz, Mainz, Germany, Tel.: +49 6131 17 4221, Fax: +49 6131 17 8047, E-mail:
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22
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Denney L, Branchett W, Gregory LG, Oliver RA, Lloyd CM. Epithelial-derived TGF-β1 acts as a pro-viral factor in the lung during influenza A infection. Mucosal Immunol 2018; 11:523-535. [PMID: 29067998 PMCID: PMC5797694 DOI: 10.1038/mi.2017.77] [Citation(s) in RCA: 45] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2017] [Accepted: 07/26/2017] [Indexed: 02/04/2023]
Abstract
Mucosal surfaces are under constant bombardment from potentially antigenic particles and so must maintain a balance between homeostasis and inappropriate immune activation and consequent pathology. Epithelial cells have a vital role orchestrating pulmonary homeostasis and defense against pathogens. TGF-β regulates an array of immune responses-both inflammatory and regulatory-however, its function is highly location- and context-dependent. We demonstrate that epithelial-derived TGF-β acts as a pro-viral factor suppressing early immune responses during influenza A infection. Mice specifically lacking bronchial epithelial TGF-β1 (epTGFβKO) displayed marked protection from influenza-induced weight loss, airway inflammation, and pathology. However, protection from influenza-induced pathology was not associated with a heightened lymphocytic immune response. In contrast, the kinetics of interferon beta (IFNβ) release into the airways was significantly enhanced in epTGFβKO mice compared with control mice, with elevated IFNβ on day 1 in epTGFβKO compared with control mice. This induced a heighted antiviral state resulting in impaired viral replication in epTGFβKO mice. Thus, epithelial-derived TGF-β acts to suppress early IFNβ responses leading to increased viral burden and pathology. This study demonstrates the importance of the local epithelial microenvironmental niche in shaping initial immune responses to viral infection and controlling host disease.
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23
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Yu X, Buttgereit A, Lelios I, Utz SG, Cansever D, Becher B, Greter M. The Cytokine TGF-β Promotes the Development and Homeostasis of Alveolar Macrophages. Immunity 2017; 47:903-912.e4. [PMID: 29126797 DOI: 10.1016/j.immuni.2017.10.007] [Citation(s) in RCA: 202] [Impact Index Per Article: 28.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2017] [Revised: 07/25/2017] [Accepted: 10/11/2017] [Indexed: 12/23/2022]
Abstract
Alveolar macrophages (AMs) derive from fetal liver monocytes, which colonize the lung during embryonic development and give rise to fully mature AMs perinatally. AM differentiation requires granulocyte macrophage colony-stimulating factor (GM-CSF), but whether additional factors are involved in AM regulation is not known. Here we report that AMs, in contrast to most other tissue macrophages, were also dependent on transforming growth factor-β receptor (TGF-βR) signaling. Conditional deletion of TGF-βR in mice at different time points halted the development and differentiation of AMs. In adult mice, TGF-β was also critical for AM homeostasis. The source of TGF-β was AMs themselves, indicative of an autocrine loop that promotes AM self-maintenance. Mechanistically, TGF-βR signaling resulted in upregulation of PPAR-γ, a signature transcription factor essential for the development of AMs. These findings reveal an additional layer of complexity regarding the guidance cues, which govern the genesis, maturation, and survival of AMs.
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24
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Denney L, Byrne AJ, Shea TJ, Buckley JS, Pease JE, Herledan GMF, Walker SA, Gregory LG, Lloyd CM. Pulmonary Epithelial Cell-Derived Cytokine TGF-β1 Is a Critical Cofactor for Enhanced Innate Lymphoid Cell Function. Immunity 2016; 43:945-58. [PMID: 26588780 PMCID: PMC4658339 DOI: 10.1016/j.immuni.2015.10.012] [Citation(s) in RCA: 120] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2014] [Revised: 06/16/2015] [Accepted: 08/05/2015] [Indexed: 12/31/2022]
Abstract
Epithelial cells orchestrate pulmonary homeostasis and pathogen defense and play a crucial role in the initiation of allergic immune responses. Maintaining the balance between homeostasis and inappropriate immune activation and associated pathology is particularly complex at mucosal sites that are exposed to billions of potentially antigenic particles daily. We demonstrated that epithelial cell-derived cytokine TGF-β had a central role in the generation of the pulmonary immune response. Mice that specifically lacked epithelial cell-derived TGF-β1 displayed a reduction in type 2 innate lymphoid cells (ILCs), resulting in suppression of interleukin-13 and hallmark features of the allergic response including airway hyperreactivity. ILCs in the airway lumen were primed to respond to TGF-β by expressing the receptor TGF-βRII and ILC chemoactivity was enhanced by TGF-β. These data demonstrate that resident epithelial cells instruct immune cells, highlighting the central role of the local environmental niche in defining the nature and magnitude of immune reactions. Epithelial-derived TGF-β drives pulmonary response to allergen Epithelial TGF-β promotes GATA3-driven cytokine production by suppression of Sox4 TGF-β is chemoactive for innate lymphoid cells that express TGF-βRII The local pulmonary environmental niche defines the nature of immune reactions
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Affiliation(s)
- Laura Denney
- Inflammation, Repair & Development, National Heart and Lung Institute, Imperial College London, London SW7 2AZ UK
| | - Adam J Byrne
- Inflammation, Repair & Development, National Heart and Lung Institute, Imperial College London, London SW7 2AZ UK
| | - Thomas J Shea
- Inflammation, Repair & Development, National Heart and Lung Institute, Imperial College London, London SW7 2AZ UK
| | - James S Buckley
- Inflammation, Repair & Development, National Heart and Lung Institute, Imperial College London, London SW7 2AZ UK
| | - James E Pease
- Inflammation, Repair & Development, National Heart and Lung Institute, Imperial College London, London SW7 2AZ UK
| | - Gaelle M F Herledan
- Inflammation, Repair & Development, National Heart and Lung Institute, Imperial College London, London SW7 2AZ UK
| | - Simone A Walker
- Inflammation, Repair & Development, National Heart and Lung Institute, Imperial College London, London SW7 2AZ UK
| | - Lisa G Gregory
- Inflammation, Repair & Development, National Heart and Lung Institute, Imperial College London, London SW7 2AZ UK
| | - Clare M Lloyd
- Inflammation, Repair & Development, National Heart and Lung Institute, Imperial College London, London SW7 2AZ UK.
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25
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Abstract
Members of the transforming growth factor beta (TGFβ) superfamily of secreted factors play essential roles in nearly every aspect of cartilage formation and maintenance. However, the mechanisms by which TGFβs transduce their effects in cartilage in vivo remain poorly understood. Mutations in several TGFβ family members, their receptors, extracellular modulators, and intracellular transducers have been described, and these usually impact the development of the cartilaginous skeleton. Furthermore, genome-wide association studies have linked components of the (TGFβ) superfamily to susceptibility to osteoarthritis. This review focuses on recent discoveries from genetic studies in the mouse regarding the regulation of TGFβ signaling in developing growth plate and articular cartilage, as well as the different modes of crosstalk between canonical and noncanonical TGFβ signaling. These new insights into TGFβ signaling in cartilage may open new prospects for therapies that maintain healthy articular cartilage.
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Affiliation(s)
- Weiguang Wang
- Department of Orthopaedic Surgery and Orthopaedic Institute for Children, David Geffen School of Medicine, University of California, Los Angeles, California, 90095
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26
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Zhao M, Perry JM, Marshall H, Venkatraman A, Qian P, He XC, Ahamed J, Li L. Megakaryocytes maintain homeostatic quiescence and promote post-injury regeneration of hematopoietic stem cells. Nat Med 2014; 20:1321-6. [PMID: 25326798 DOI: 10.1038/nm.3706] [Citation(s) in RCA: 408] [Impact Index Per Article: 40.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2014] [Accepted: 09/02/2014] [Indexed: 12/15/2022]
Abstract
Multiple bone marrow stromal cell types have been identified as hematopoietic stem cell (HSC)-regulating niche cells. However, whether HSC progeny can serve directly as HSC niche cells has not previously been shown. Here we report a dichotomous role of megakaryocytes (MKs) in both maintaining HSC quiescence during homeostasis and promoting HSC regeneration after chemotherapeutic stress. We show that MKs are physically associated with HSCs in the bone marrow of mice and that MK ablation led to activation of quiescent HSCs and increased HSC proliferation. RNA sequencing (RNA-seq) analysis revealed that transforming growth factor β1 (encoded by Tgfb1) is expressed at higher levels in MKs as compared to other stromal niche cells. MK ablation led to reduced levels of biologically active TGF-β1 protein in the bone marrow and nuclear-localized phosphorylated SMAD2/3 (pSMAD2/3) in HSCs, suggesting that MKs maintain HSC quiescence through TGF-β-SMAD signaling. Indeed, TGF-β1 injection into mice in which MKs had been ablated restored HSC quiescence, and conditional deletion of Tgfb1 in MKs increased HSC activation and proliferation. These data demonstrate that TGF-β1 is a dominant signal emanating from MKs that maintains HSC quiescence. However, under conditions of chemotherapeutic challenge, MK ablation resulted in a severe defect in HSC expansion. In response to stress, fibroblast growth factor 1 (FGF1) signaling from MKs transiently dominates over TGF-β inhibitory signaling to stimulate HSC expansion. Overall, these observations demonstrate that MKs serve as HSC-derived niche cells to dynamically regulate HSC function.
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27
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Yan J, Zhang H, Yin Y, Li J, Tang Y, Purkayastha S, Li L, Cai D. Obesity- and aging-induced excess of central transforming growth factor-β potentiates diabetic development via an RNA stress response. Nat Med 2014; 20:1001-8. [PMID: 25086906 DOI: 10.1038/nm.3616] [Citation(s) in RCA: 108] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2014] [Accepted: 05/28/2014] [Indexed: 12/12/2022]
Abstract
The brain, in particular the hypothalamus, plays a role in regulating glucose homeostasis; however, it remains unclear if the brain is causally involved in diabetic development. Here, we identified that hypothalamic TGF-β is excessive under conditions of not only obesity but aging, which are two general etiological factors of diabetes. Pharmacological and genetic approaches consistently revealed that brain TGF-β excess caused hyperglycemia and glucose intolerance in a body weight-independent manner. Cell-specific genetic models demonstrated that astrocytes are responsible for brain TGF-β excess, and POMC neurons are crucial for the pro-diabetic effect of TGF-β excess. Mechanistically, TGF-β excess induced hypothalamic RNA stress response to accelerate IκBα mRNA decay, leading to an atypical, mRNA metabolism-driven hypothalamic NF-κB activation which links obesity as well as aging to hypothalamic inflammation. In conclusion, brain TGF-β excess and induction of RNA stress response and hypothalamic inflammation are important for the pro-diabetic effects of obesity or aging.
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28
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Ishtiaq Ahmed AS, Bose GC, Huang L, Azhar M. Generation of mice carrying a knockout-first and conditional-ready allele of transforming growth factor beta2 gene. Genesis 2014; 52:817-26. [PMID: 24895296 DOI: 10.1002/dvg.22795] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [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: 03/16/2014] [Accepted: 05/30/2014] [Indexed: 01/22/2023]
Abstract
Transforming growth factor beta2 (TGFβ2) is a multifunctional protein which is expressed in several embryonic and adult organs. TGFB2 mutations can cause Loeys Dietz syndrome, and its dysregulation is involved in cardiovascular, skeletal, ocular, and neuromuscular diseases, osteoarthritis, tissue fibrosis, and various forms of cancer. TGFβ2 is involved in cell growth, apoptosis, cell migration, cell differentiation, cell-matrix remodeling, epithelial-mesenchymal transition, and wound healing in a highly context-dependent and tissue-specific manner. Tgfb2(-/-) mice die perinatally from congenital heart disease, precluding functional studies in adults. Here, we have generated mice harboring Tgfb2(βgeo) (knockout-first lacZ-tagged insertion) gene-trap allele and Tgfb2(flox) conditional allele. Tgfb2(βgeo/βgeo) or Tgfb2(βgeo/-) mice died at perinatal stage from the same congenital heart defects as Tgfb2(-/-) mice. β-galactosidase staining successfully detected Tgfb2 expression in the heterozygous Tgfb2(βgeo) fetal tissue sections. Tgfb2(flox) mice were produced by crossing the Tgfb2(+/βgeo) mice with the FLPeR mice. Tgfb2(flox/-) mice were viable. Tgfb2 conditional knockout (Tgfb2(cko/-) ) fetuses were generated by crossing of Tgfb2(flox/-) mice with Tgfb2(+/-) ; EIIaCre mice. Systemic Tgfb2(cko/-) embryos developed cardiac defects which resembled the Tgfb2(βgeo/βgeo) , Tgfb2(βgeo/-) , and Tgfb2(-/-) fetuses. In conclusion, Tgfb2(βgeo) and Tgfb2(flox) mice are novel mouse strains which will be useful for investigating the tissue specific expression and function of TGFβ2 in embryonic development, adult organs, and disease pathogenesis and cancer. genesis
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Affiliation(s)
- A S Ishtiaq Ahmed
- Department of Pediatrics, Program in Developmental Biology and Neonatal Medicine, Herman B. Wells Center for Pediatric Research, Indiana University School of Medicine, Indianapolis, Indiana
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29
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Śledzińska A, Hemmers S, Mair F, Gorka O, Ruland J, Fairbairn L, Nissler A, Müller W, Waisman A, Becher B, Buch T. TGF-β signalling is required for CD4⁺ T cell homeostasis but dispensable for regulatory T cell function. PLoS Biol 2013; 11:e1001674. [PMID: 24115907 PMCID: PMC3792861 DOI: 10.1371/journal.pbio.1001674] [Citation(s) in RCA: 75] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2012] [Accepted: 08/23/2013] [Indexed: 12/16/2022] Open
Abstract
Signalling by the cytokine TGF-β regulates mature CD4+ T cell populations but is not involved in the survival and function of regulatory T cells. TGF-β is widely held to be critical for the maintenance and function of regulatory T (Treg) cells and thus peripheral tolerance. This is highlighted by constitutive ablation of TGF-β receptor (TR) during thymic development in mice, which leads to a lethal autoimmune syndrome. Here we describe that TGF-β–driven peripheral tolerance is not regulated by TGF-β signalling on mature CD4+ T cells. Inducible TR2 ablation specifically on CD4+ T cells did not result in a lethal autoinflammation. Transfer of these TR2-deficient CD4+ T cells to lymphopenic recipients resulted in colitis, but not overt autoimmunity. In contrast, thymic ablation of TR2 in combination with lymphopenia led to lethal multi-organ inflammation. Interestingly, deletion of TR2 on mature CD4+ T cells does not result in the collapse of the Treg cell population as observed in constitutive models. Instead, a pronounced enlargement of both regulatory and effector memory T cell pools was observed. This expansion is cell-intrinsic and seems to be caused by increased T cell receptor sensitivity independently of common gamma chain-dependent cytokine signals. The expression of Foxp3 and other regulatory T cells markers was not dependent on TGF-β signalling and the TR2–deficient Treg cells retained their suppressive function both in vitro and in vivo. In summary, absence of TGF-β signalling on mature CD4+ T cells is not responsible for breakdown of peripheral tolerance, but rather controls homeostasis of mature T cells in adult mice. TGF-β is a cytokine thought to be critical for the maintenance and function of tolerance in the immune system. In many studies the disruption of TGF-β signalling in CD4+ T cells (a type of white blood cell that coordinates immune responses) has resulted in autoimmune syndromes. We show here that the induced removal of this cytokine's receptor from these specialised blood cells results in an astonishingly mild outcome. Contrary to expectations, the number of regulatory T cells is actually increased, and we find that these cells are not dependent on TGF-β signalling. We also show that removal of the receptor from mature CD4+ T cells does not lead to lethal autoinflammation; only when we removed the receptor during development of the cells did we see the characteristic lethal multi-organ inflammation reported previously in constitutive models of TGF-β receptor ablation. In summary, our findings indicate that although TGF-β regulates maintenance of mature CD4+ T cells, its signals are dispensable for immune tolerance within this cell population.
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Affiliation(s)
- Anna Śledzińska
- Institute of Experimental Immunology, University of Zurich, Zurich, Switzerland
| | - Saskia Hemmers
- Institute for Genetics, University of Cologne, Cologne, Germany
| | - Florian Mair
- Institute of Experimental Immunology, University of Zurich, Zurich, Switzerland
| | - Oliver Gorka
- Clinical Chemistry, Klinikum rechts der Isar, Technische Universität München, Germany
| | - Jürgen Ruland
- Clinical Chemistry, Klinikum rechts der Isar, Technische Universität München, Germany
| | - Lynsey Fairbairn
- Institute for Medical Microbiology, Immunology and Hygiene, Technische Universität München, Germany
| | - Anja Nissler
- Institute of Experimental Immunology, University of Zurich, Zurich, Switzerland
| | - Werner Müller
- Department of Experimental Immunology, Helmholtz Center for Infection Research, Braunschweig, Germany
| | - Ari Waisman
- Institute for Genetics, University of Cologne, Cologne, Germany
- Institute for Molecular Medicine, University Medical Center of the Johannes-Gutenberg University of Mainz, Mainz, Germany
| | - Burkhard Becher
- Institute of Experimental Immunology, University of Zurich, Zurich, Switzerland
- * E-mail: (TB); (BB)
| | - Thorsten Buch
- Institute of Experimental Immunology, University of Zurich, Zurich, Switzerland
- Institute for Genetics, University of Cologne, Cologne, Germany
- Institute for Medical Microbiology, Immunology and Hygiene, Technische Universität München, Germany
- * E-mail: (TB); (BB)
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30
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Abstract
Cardiac fibroblasts are the most abundant cell in the mammalian heart. While they have been historically overlooked in terms of functional contributions to development and physiology, cardiac fibroblasts are now front and center. They are currently recognized as key protagonists during both normal development and cardiomyopathy disease, and work together with cardiomyocytes through paracrine, structural, and potentially electrical interactions. However, the lack of specific biomarkers and fibroblast heterogeneous nature currently convolutes the study of this dynamic cell lineage; though, efforts to advance marker analysis and lineage mapping technologies are ongoing. These tools will help elucidate the functional significance of fibroblast-cardiomyocyte interactions in vivo and delineate the dynamic nature of normal and pathological cardiac fibroblasts. Since therapeutic promise lies in understanding the interface between developmental biology and the postnatal injury response, future studies to understand the divergent roles played by cardiac fibroblasts both in utero and following cardiac insult are essential.
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Affiliation(s)
- Jacquelyn D Lajiness
- Developmental Biology and Neonatal Medicine Program, HB Wells Center for Pediatric Research, Indiana University School of Medicine, 1044 West Walnut Street, Room R4 W402F, Indianapolis, IN 46202, USA
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31
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Abstract
Mouse genetic engineering has revolutionized our understanding of the molecular and genetic basis of heart development and disease. This technology involves conditional tissue-specific and temporal transgenic and gene targeting approaches, as well as introduction of polymorphisms into the mouse genome. These approaches are increasingly used to elucidate the genetic pathways underlying tissue homeostasis, physiology, and pathophysiology of adult heart. They have also led to the development of clinically relevant models of human cardiac diseases. Here, we review the technologies and their limitations in general and the cardiovascular research community in particular.
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Affiliation(s)
- Thomas Doetschman
- BIO5 Institute and Department of Cellular & Molecular Medicine, University of Arizona, Tucson, AZ, USA
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Doetschman T, Georgieva T, Li H, Reed TD, Grisham C, Friel J, Estabrook MA, Gard C, Sanford LP, Azhar M. Generation of mice with a conditional allele for the transforming growth factor beta3 gene. Genesis 2012; 50:59-66. [PMID: 22223248 DOI: 10.1002/dvg.20789] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2011] [Revised: 06/04/2011] [Accepted: 07/22/2011] [Indexed: 01/25/2023]
Abstract
The transforming growth factor beta (TGFβ) pathway is involved in embryonic development and several inherited and acquired human diseases. The gene for TGFβ3 (Tgfb3) encodes one of the three ligands for TGFβ receptors. It is widely expressed in the embryo and its mutation or misexpression is found in human diseases. Tgfb3-/- mice die at birth from cleft palate, precluding functional studies in adults. Here, we generated mice in which exon 6 of Tgfb3 was flanked with LoxP sites (Tgfb3flox/flox). The adult mice were normal and fertile. EIIa-Cre-mediated deletion of exon 6 in Tgfb3flox/flox mice efficiently generated Tgfb3 conditional knockout (Tgfb3cko/cko) mice which died at birth from the same cleft palate defect as Tgfb3-/- mice, indicating that the conditional and knockout alleles are functionally equivalent. This Tgfb3cko allele will now enable studies of TGFβ3 function in different cell or tissue types in embryonic development and during adulthood.
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Affiliation(s)
- Thomas Doetschman
- BIO5 Institute, Department of Cellular and Molecular Medicine, University of Arizona, Tucson, Arizona 85724-5217, USA
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Meyer A, Wang W, Qu J, Croft L, Degen JL, Coller BS, Ahamed J. Platelet TGF-β1 contributions to plasma TGF-β1, cardiac fibrosis, and systolic dysfunction in a mouse model of pressure overload. Blood 2012; 119:1064-74. [PMID: 22134166 DOI: 10.1182/blood-2011-09-377648] [Citation(s) in RCA: 145] [Impact Index Per Article: 11.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
Abstract
Circulating platelets contain high concentrations of TGF-β1 in their α-granules and release it on platelet adhesion/activation. We hypothesized that uncontrolled in vitro release of platelet TGF-β1 may confound measurement of plasma TGF-β1 in mice and that in vivo release and activation may contribute to cardiac pathology in response to constriction of the transverse aorta, which produces both high shear and cardiac pressure overload. Plasma TGF-β1 levels in blood collected from C57Bl/6 mice by the standard retro-bulbar technique were much higher than those obtained when prostaglandin E₁ was added to inhibit release or when blood was collected percutaneously from the left ventricle under ultrasound guidance. Even with optimal blood drawing, plasma TGF-β1 was lower in mice rendered profoundly thrombocytopenic or mice with selectively low levels of platelet TGF-β1 because of megakaryocyte-specific disruption of their TGF-β1 gene (Tgfb1(flox)). Tgfb1(flox) mice were also partially protected from developing cardiac hypertrophy, fibrosis, and systolic dysfunction in response to transverse aortic constriction. These studies demonstrate that plasma TGF-β1 levels can be assessed accurately, but it requires special precautions; that platelet TGF-β1 contributes to plasma levels of TGF-β1; and that platelet TGF-β1 contributes to the pathologic cardiac changes that occur in response to aortic constriction.
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34
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Doetschman T, Barnett JV, Runyan RB, Camenisch TD, Heimark RL, Granzier HL, Conway SJ, Azhar M. Transforming growth factor beta signaling in adult cardiovascular diseases and repair. Cell Tissue Res 2011; 347:203-23. [PMID: 21953136 DOI: 10.1007/s00441-011-1241-3] [Citation(s) in RCA: 77] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2011] [Accepted: 09/02/2011] [Indexed: 01/15/2023]
Abstract
The majority of children with congenital heart disease now live into adulthood due to the remarkable surgical and medical advances that have taken place over the past half century. Because of this, adults now represent the largest age group with adult cardiovascular diseases. It includes patients with heart diseases that were not detected or not treated during childhood, those whose defects were surgically corrected but now need revision due to maladaptive responses to the procedure, those with exercise problems and those with age-related degenerative diseases. Because adult cardiovascular diseases in this population are relatively new, they are not well understood. It is therefore necessary to understand the molecular and physiological pathways involved if we are to improve treatments. Since there is a developmental basis to adult cardiovascular disease, transforming growth factor beta (TGFβ) signaling pathways that are essential for proper cardiovascular development may also play critical roles in the homeostatic, repair and stress response processes involved in adult cardiovascular diseases. Consequently, we have chosen to summarize the current information on a subset of TGFβ ligand and receptor genes and related effector genes that, when dysregulated, are known to lead to cardiovascular diseases and adult cardiovascular deficiencies and/or pathologies. A better understanding of the TGFβ signaling network in cardiovascular disease and repair will impact genetic and physiologic investigations of cardiovascular diseases in elderly patients and lead to an improvement in clinical interventions.
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35
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Arthur HM, Bamforth SD. TGFβ signaling and congenital heart disease: Insights from mouse studies. Birth Defects Res A Clin Mol Teratol 2011; 91:423-34. [PMID: 21538815 DOI: 10.1002/bdra.20794] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/15/2010] [Revised: 01/17/2011] [Accepted: 01/28/2011] [Indexed: 12/14/2022]
Abstract
Transforming growth factor β (TGFβ) regulates one of the major signaling pathways that control tissue morphogenesis. In vitro experiments using heart explants indicated the importance of this signaling pathway for the generation of cushion mesenchymal cells, which ultimately contribute to the valves and septa of the mature heart. Recent advances in mouse genetics have enabled in vivo investigation into the roles of individual ligands, receptors, and coreceptors of this pathway, including investigation of the tissue specificity of these roles in heart development. This work has revealed that (1) cushion mesenchyme can form in the absence of TGFβ signaling, although mesenchymal cell numbers may be misregulated; (2) TGFβ signaling is essential for correct remodeling of the cushions, particularly those of the outflow tract; (3) TGFβ signaling also has a role in ensuring accurate remodeling of the pharyngeal arch arteries to form the mature aortic arch; and (4) mesenchymal cells derived from the epicardium require TGFβ signaling to promote their differentiation to vascular smooth muscle cells to support the coronary arteries. In addition, a mouse genetics approach has also been used to investigate the disease pathogenesis of Loeys-Dietz syndrome, a familial autosomal dominant human disorder characterized by a dilated aortic root, and associated with mutations in the two TGFβ signaling receptor genes, TGFBR1 and TGFBR2. Further important insights are likely as this exciting work progresses.
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Affiliation(s)
- Helen M Arthur
- Institute of Human Genetics, Newcastle University, Newcastle upon Tyne, United Kingdom.
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Xing Q, Su H, Cui J, Wang B. Role of Treg Cells and TGF-β1 in Patients with Systemic Lupus Erythematosus: A Possible Relation with Lupus Nephritis. Immunol Invest 2011; 41:15-27. [DOI: 10.3109/08820139.2011.578189] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
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Keyes JT, Borowicz SM, Rader JH, Utzinger U, Azhar M, Vande Geest JP. Design and demonstration of a microbiaxial optomechanical device for multiscale characterization of soft biological tissues with two-photon microscopy. Microsc Microanal 2011; 17:167-175. [PMID: 21226989 PMCID: PMC4272388 DOI: 10.1017/s1431927610094341] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
The biomechanical response of tissues serves as a valuable marker in the prediction of disease and in understanding the related behavior of the body under various disease and age states. Alterations in the macroscopic biomechanical response of diseased tissues are well documented; however, a thorough understanding of the microstructural events that lead to these changes is poorly understood. In this article we introduce a novel microbiaxial optomechanical device that allows two-photon imaging techniques to be coupled with macromechanical stimulation in hydrated planar tissue specimens. This allows that the mechanical response of the microstructure can be quantified and related to the macroscopic response of the same tissue sample. This occurs without the need to fix tissue in strain states that could introduce a change in the microstructural configuration. We demonstrate the passive realignment of fibrous proteins under various types of loading, which demonstrates the ability of tissue microstructure to reinforce itself in periods of high stress. In addition, the collagen and elastin response of tissue during viscoelastic behavior is reported showing interstitial fluid movement and fiber realignment potentially responsible for the temporal behavior. We also demonstrate that nonhomogeneities in fiber strain exist over biaxial regions of assumed homogeneity.
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Affiliation(s)
- Joseph T. Keyes
- Graduate Interdisciplinary Program in Biomedical Engineering, The University of Arizona, Tucson, AZ 85721, USA
| | - Stacy M. Borowicz
- Department of Aerospace and Mechanical Engineering, The University of Arizona, Tucson, AZ 85721, USA
| | - Jacob H. Rader
- Department of Aerospace and Mechanical Engineering, The University of Arizona, Tucson, AZ 85721, USA
| | - Urs Utzinger
- Graduate Interdisciplinary Program in Biomedical Engineering, The University of Arizona, Tucson, AZ 85721, USA
- BIO5 Institute for Biocollaborative Research, The University of Arizona, Tucson, AZ 85721, USA
- Department of Biomedical Engineering, The University of Arizona, Tucson, AZ 85721, USA
| | - Mohamad Azhar
- BIO5 Institute for Biocollaborative Research, The University of Arizona, Tucson, AZ 85721, USA
- Department of Cell Biology and Anatomy, The University of Arizona, Tucson, AZ 85721, USA
| | - Jonathan P. Vande Geest
- Graduate Interdisciplinary Program in Biomedical Engineering, The University of Arizona, Tucson, AZ 85721, USA
- Department of Aerospace and Mechanical Engineering, The University of Arizona, Tucson, AZ 85721, USA
- BIO5 Institute for Biocollaborative Research, The University of Arizona, Tucson, AZ 85721, USA
- Department of Biomedical Engineering, The University of Arizona, Tucson, AZ 85721, USA
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Becker-Merok A, Eilertsen GØ, Nossent JC. Levels of transforming growth factor-beta are low in systemic lupus erythematosus patients with active disease. J Rheumatol 2010; 37:2039-45. [PMID: 20682675 DOI: 10.3899/jrheum.100180] [Citation(s) in RCA: 64] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
OBJECTIVE Cytokines are central regulators of the immune response but the workings of this complex network in systemic lupus erythematosus (SLE) are not fully understood. We investigated a range of inflammatory and immune-modulating cytokines to determine their value as biomarkers for disease subsets in SLE. METHODS This was a cross-sectional study in 102 patients with SLE (87% women, disease duration 10.6 yrs). Circulating concentrations of interleukin 1β (IL-1β), IL-4, IL-6, IL-10, IL-12, IL-17, monocyte chemotactic protein 1 (MCP-1), macrophage inflammatory protein 1 (MIP-1α), MIP-1β, interferon-γ (IFN-γ), tumor necrosis factor-α (TNF-α), and total transforming growth factor-β1 (TGF-β1) were related to disease activity (SLE Disease Activity Index; SLEDAI), lymphocyte subsets, autoantibody levels, accrued damage (Systemic Lupus International Collaborating Clinics/ACR Damage Index; SDI), and concomitant treatment. RESULTS Patients with SLE had lower levels of TGF-β1 (p = 0.01) and IL-1β (p = 0.0004) compared to controls. TGF-β1 levels were lower in patients with SLEDAI scores 1-10 and SDI > 3; and were correlated with CD4+, CD8+, and natural killer cell counts; and were independent of steroid or cytotoxic drug use. Treatment with cardiovascular drugs was associated with lower IL-12 levels. No consistent disease associations existed for the other cytokines investigated. CONCLUSION Lower TGF-β1 was the most consistent cytokine abnormality in patients with SLE. The associations with disease activity, lymphocyte subsets, and damage suggest that TGF-β1 may be a therapeutic target of interest in SLE.
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Affiliation(s)
- Andrea Becker-Merok
- Department of Rheumatology, Institute of Clinical Medicine, University of Tromsø, Tromsø, Norway
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