1
|
Naba A. Mechanisms of assembly and remodelling of the extracellular matrix. Nat Rev Mol Cell Biol 2024:10.1038/s41580-024-00767-3. [PMID: 39223427 DOI: 10.1038/s41580-024-00767-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 07/16/2024] [Indexed: 09/04/2024]
Abstract
The extracellular matrix (ECM) is the complex meshwork of proteins and glycans that forms the scaffold that surrounds and supports cells. It exerts key roles in all aspects of metazoan physiology, from conferring physical and mechanical properties on tissues and organs to modulating cellular processes such as proliferation, differentiation and migration. Understanding the mechanisms that orchestrate the assembly of the ECM scaffold is thus crucial to understand ECM functions in health and disease. This Review discusses novel insights into the compositional diversity of matrisome components and the mechanisms that lead to tissue-specific assemblies and architectures tailored to support specific functions. The Review then highlights recently discovered mechanisms, including post-translational modifications and metabolic pathways such as amino acid availability and the circadian clock, that modulate ECM secretion, assembly and remodelling in homeostasis and human diseases. Last, the Review explores the potential of 'matritherapies', that is, strategies to normalize ECM composition and architecture to achieve a therapeutic benefit.
Collapse
Affiliation(s)
- Alexandra Naba
- Department of Physiology and Biophysics, University of Illinois Chicago, Chicago, IL, USA.
- University of Illinois Cancer Center, Chicago, IL, USA.
| |
Collapse
|
2
|
Jackson JW, Frederick C Streich, Pal A, Coricor G, Boston C, Brueckner CT, Canonico K, Chapron C, Cote S, Dagbay KB, Danehy FT, Kavosi M, Kumar S, Lin S, Littlefield C, Looby K, Manohar R, Martin CJ, Wood M, Zawadzka A, Wawersik S, Nicholls SB, Datta A, Buckler A, Schürpf T, Carven GJ, Qatanani M, Fogel AI. An antibody that inhibits TGF-β1 release from latent extracellular matrix complexes attenuates the progression of renal fibrosis. Sci Signal 2024; 17:eadn6052. [PMID: 38980922 DOI: 10.1126/scisignal.adn6052] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2024] [Accepted: 06/11/2024] [Indexed: 07/11/2024]
Abstract
Inhibitors of the transforming growth factor-β (TGF-β) pathway are potentially promising antifibrotic therapies, but nonselective simultaneous inhibition of all three TGF-β homologs has safety liabilities. TGF-β1 is noncovalently bound to a latency-associated peptide that is, in turn, covalently bound to different presenting molecules within large latent complexes. The latent TGF-β-binding proteins (LTBPs) present TGF-β1 in the extracellular matrix, and TGF-β1 is presented on immune cells by two transmembrane proteins, glycoprotein A repetitions predominant (GARP) and leucine-rich repeat protein 33 (LRRC33). Here, we describe LTBP-49247, an antibody that selectively bound to and inhibited the activation of TGF-β1 presented by LTBPs but did not bind to TGF-β1 presented by GARP or LRRC33. Structural studies demonstrated that LTBP-49247 recognized an epitope on LTBP-presented TGF-β1 that is not accessible on GARP- or LRRC33-presented TGF-β1, explaining the antibody's selectivity for LTBP-complexed TGF-β1. In two rodent models of kidney fibrosis of different etiologies, LTBP-49247 attenuated fibrotic progression, indicating the central role of LTBP-presented TGF-β1 in renal fibrosis. In mice, LTBP-49247 did not have the toxic effects associated with less selective TGF-β inhibitors. These results establish the feasibility of selectively targeting LTBP-bound TGF-β1 as an approach for treating fibrosis.
Collapse
Affiliation(s)
| | | | - Ajai Pal
- Scholar Rock Inc., 301 Binney Street, Cambridge, MA 02142, USA
| | - George Coricor
- Scholar Rock Inc., 301 Binney Street, Cambridge, MA 02142, USA
| | - Chris Boston
- Scholar Rock Inc., 301 Binney Street, Cambridge, MA 02142, USA
| | | | | | | | - Shaun Cote
- Scholar Rock Inc., 301 Binney Street, Cambridge, MA 02142, USA
| | - Kevin B Dagbay
- Scholar Rock Inc., 301 Binney Street, Cambridge, MA 02142, USA
| | | | - Mania Kavosi
- Scholar Rock Inc., 301 Binney Street, Cambridge, MA 02142, USA
| | - Sandeep Kumar
- Scholar Rock Inc., 301 Binney Street, Cambridge, MA 02142, USA
| | - Susan Lin
- Scholar Rock Inc., 301 Binney Street, Cambridge, MA 02142, USA
| | | | - Kailyn Looby
- Scholar Rock Inc., 301 Binney Street, Cambridge, MA 02142, USA
| | - Rohan Manohar
- Scholar Rock Inc., 301 Binney Street, Cambridge, MA 02142, USA
| | | | - Marcie Wood
- Scholar Rock Inc., 301 Binney Street, Cambridge, MA 02142, USA
- ToxStrategies LLC, 23501 Cinco Ranch Boulevard, Katy, TX 77494, USA
| | - Agatha Zawadzka
- Scholar Rock Inc., 301 Binney Street, Cambridge, MA 02142, USA
| | - Stefan Wawersik
- Scholar Rock Inc., 301 Binney Street, Cambridge, MA 02142, USA
| | | | - Abhishek Datta
- Scholar Rock Inc., 301 Binney Street, Cambridge, MA 02142, USA
| | - Alan Buckler
- Scholar Rock Inc., 301 Binney Street, Cambridge, MA 02142, USA
| | - Thomas Schürpf
- Scholar Rock Inc., 301 Binney Street, Cambridge, MA 02142, USA
| | | | | | - Adam I Fogel
- Scholar Rock Inc., 301 Binney Street, Cambridge, MA 02142, USA
| |
Collapse
|
3
|
Neupane S, Williamson DB, Roth RA, Halabi CM, Haltiwanger RS, Holdener BC. Poglut2/3 double knockout in mice results in neonatal lethality with reduced levels of fibrillin in lung tissues. J Biol Chem 2024; 300:107445. [PMID: 38844137 PMCID: PMC11261140 DOI: 10.1016/j.jbc.2024.107445] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2024] [Revised: 05/08/2024] [Accepted: 05/17/2024] [Indexed: 06/30/2024] Open
Abstract
Fibrillin microfibrils play a critical role in the formation of elastic fibers, tissue/organ development, and cardiopulmonary function. These microfibrils not only provide structural support and flexibility to tissues, but they also regulate growth factor signaling through a plethora of microfibril-binding proteins in the extracellular space. Mutations in fibrillins are associated with human diseases affecting cardiovascular, pulmonary, skeletal, and ocular systems. Fibrillins consist of up to 47 epidermal growth factor-like repeats, of which more than half are modified by protein O-glucosyltransferase 2 (POGLUT2) and/or POGLUT3. Loss of these modifications reduces secretion of N-terminal fibrillin constructs overexpressed in vitro. Here, we investigated the role of POGLUT2 and POGLUT3 in vivo using a Poglut2/3 double knockout (DKO) mouse model. Blocking O-glucosylation caused neonatal death with skeletal, pulmonary, and eye defects reminiscent of fibrillin/elastin mutations. Proteomic analyses of DKO dermal fibroblast medium and extracellular matrix provided evidence that fibrillins were more sensitive to loss of O-glucose compared to other POGLUT2/3 substrates. This conclusion was supported by immunofluorescent analyses of late gestation DKO lungs where FBN levels were reduced and microfibrils appeared fragmented in the pulmonary arteries and veins, bronchioles, and developing saccules. Defects in fibrillin microfibrils likely contributed to impaired elastic fiber formation and histological changes observed in DKO lung blood vessels, bronchioles, and saccules. Collectively, these results highlight the importance of POGLUT2/3-mediated O-glucosylation in vivo and open the possibility that O-glucose modifications on fibrillin influence microfibril assembly and or protein interactions in the ECM environment.
Collapse
Affiliation(s)
- Sanjiv Neupane
- Department of Biochemistry and Cell Biology, Stony Brook University, Stony Brook, New York, USA
| | - Daniel B Williamson
- Complex Carbohydrate Research Center, Department of Biochemistry and Molecular Biology, University of Georgia, Athens, Georgia, USA
| | - Robyn A Roth
- Division of Nephrology, Department of Pediatrics, Washington University School of Medicine, St Louis, Missouri, USA
| | - Carmen M Halabi
- Division of Nephrology, Department of Pediatrics, Washington University School of Medicine, St Louis, Missouri, USA
| | - Robert S Haltiwanger
- Complex Carbohydrate Research Center, Department of Biochemistry and Molecular Biology, University of Georgia, Athens, Georgia, USA.
| | - Bernadette C Holdener
- Department of Biochemistry and Cell Biology, Stony Brook University, Stony Brook, New York, USA.
| |
Collapse
|
4
|
Kaneko N, Hirai K, Oshima M, Yura K, Hattori M, Maeda N, Ohtaka-Maruyama C. ADAMTS2 promotes radial migration by activating TGF-β signaling in the developing neocortex. EMBO Rep 2024; 25:3090-3115. [PMID: 38871984 PMCID: PMC11239934 DOI: 10.1038/s44319-024-00174-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2022] [Revised: 05/20/2024] [Accepted: 06/03/2024] [Indexed: 06/15/2024] Open
Abstract
The mammalian neocortex is formed by sequential radial migration of newborn excitatory neurons. Migrating neurons undergo a multipolar-to-bipolar transition at the subplate (SP) layer, where extracellular matrix (ECM) components are abundantly expressed. Here, we investigate the role of the ECM at the SP layer. We show that TGF-β signaling-related ECM proteins, and their downstream effector, p-smad2/3, are selectively expressed in the SP layer. We also find that migrating neurons express a disintegrin and metalloproteinase with thrombospondin motif 2 (ADAMTS2), an ECM metalloproteinase, just below the SP layer. Knockdown and knockout of Adamts2 suppresses the multipolar-to-bipolar transition of migrating neurons and disturbs radial migration. Time-lapse luminescence imaging of TGF-β signaling indicates that ADAMTS2 activates this signaling pathway in migrating neurons during the multipolar-to-bipolar transition at the SP layer. Overexpression of TGF-β2 in migrating neurons partially rescues migration defects in ADAMTS2 knockout mice. Our data suggest that ADAMTS2 secreted by the migrating multipolar neurons activates TGF-β signaling by ECM remodeling of the SP layer, which might drive the multipolar to bipolar transition.
Collapse
Affiliation(s)
- Noe Kaneko
- Developmental Neuroscience Project, Department of Brain & Neurosciences, Tokyo Metropolitan Institute of Medical Science, Tokyo, Japan
- Department of Life Science, Graduate School of Humanities and Sciences, Ochanomizu University, Tokyo, Japan
| | - Kumiko Hirai
- Developmental Neuroscience Project, Department of Brain & Neurosciences, Tokyo Metropolitan Institute of Medical Science, Tokyo, Japan
| | - Minori Oshima
- Developmental Neuroscience Project, Department of Brain & Neurosciences, Tokyo Metropolitan Institute of Medical Science, Tokyo, Japan
- Department of Life Science, Graduate School of Humanities and Sciences, Ochanomizu University, Tokyo, Japan
| | - Kei Yura
- Department of Life Science, Graduate School of Humanities and Sciences, Ochanomizu University, Tokyo, Japan
- School of Advanced Science and Engineering, Waseda University, Tokyo, Japan
| | - Mitsuharu Hattori
- Department of Biomedical Science, Graduate School of Pharmaceutical Sciences, Nagoya City University, Nagoya, Japan
| | - Nobuaki Maeda
- Developmental Neuroscience Project, Department of Brain & Neurosciences, Tokyo Metropolitan Institute of Medical Science, Tokyo, Japan
| | - Chiaki Ohtaka-Maruyama
- Developmental Neuroscience Project, Department of Brain & Neurosciences, Tokyo Metropolitan Institute of Medical Science, Tokyo, Japan.
| |
Collapse
|
5
|
Nicholas SE, Basu SK, Mandal N, Karamichos D. Amelioration of Fibrosis via S1P Inhibition Is Regulated by Inactivation of TGF-β and SPL Pathways in the Human Cornea. Int J Mol Sci 2024; 25:6560. [PMID: 38928268 PMCID: PMC11203819 DOI: 10.3390/ijms25126560] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2024] [Revised: 06/10/2024] [Accepted: 06/11/2024] [Indexed: 06/28/2024] Open
Abstract
Human corneal fibrosis can lead to opacity and ultimately partial or complete vision loss. Currently, corneal transplantation is the only treatment for severe corneal fibrosis and comes with the risk of rejection and donor shortages. Sphingolipids (SPLs) are known to modulate fibrosis in various tissues and organs, including the cornea. We previously reported that SPLs are tightly related to both, transforming growth factor beta (TGF-β) signaling and corneal fibrogenesis. The aim of this study was to investigate the effects of sphingosine-1-phosphate (S1P) and S1P inhibition on specific TGF-β and SPL family members in corneal fibrosis. Healthy human corneal fibroblasts (HCFs) were isolated and cultured in EMEM + FBS + VitC (construct medium) on 3D transwells for 4 weeks. The following treatments were prepared in a construct medium: 0.1 ng/mL TGF-β1 (β1), 1 μM sphingosine-1-phosphate (S1P), and 5 μM Sphingosine kinase inhibitor 2 (I2). Five groups were tested: (1) control (no treatment); rescue groups; (2) β1/S1P; (3) β1/I2; prevention groups; (4) S1P/β1; and (5) I2/β1. Each treatment was administered for 2 weeks with one treatment and switched to another for 2 weeks. Using Western blot analysis, the 3D constructs were examined for the expression of fibrotic markers, SPL, and TGF-β signaling pathway members. Scratch assays from 2D cultures were also utilized to evaluate cell migration We observed reduced fibrotic expression and inactivation of latent TGF-β binding proteins (LTBPs), TGF-β receptors, Suppressor of Mothers Against Decapentaplegic homologs (SMADs), and SPL signaling following treatment with I2 prevention and rescue compared to S1P prevention and rescue, respectively. Furthermore, we observed increased cell migration following stimulation with I2 prevention and rescue groups, with decreased cell migration following stimulation with S1P prevention and rescue groups after 12 h and 18 h post-scratch. We have demonstrated that I2 treatment reduced fibrosis and modulated the inactivation of LTBPs, TGF-β receptors, SPLs, and the canonical downstream SMAD pathway. Further investigations are warranted in order to fully uncover the potential of utilizing SphK I2 as a novel therapy for corneal fibrosis.
Collapse
Affiliation(s)
- Sarah E. Nicholas
- North Texas Eye Research Institute, University of North Texas Health Science Center, Fort Worth, TX 76107, USA;
- Department of Pharmaceutical Sciences, University of North Texas Health Science Center, Fort Worth, TX 76107, USA
| | - Sandip K. Basu
- Department of Ophthalmology, University of Tennessee Health Science Center, Memphis, TN 38163, USA; (S.K.B.); (N.M.)
| | - Nawajes Mandal
- Department of Ophthalmology, University of Tennessee Health Science Center, Memphis, TN 38163, USA; (S.K.B.); (N.M.)
- Department of Anatomy and Neurobiology, University of Tennessee Health Science Center, Memphis, TN 38163, USA
| | - Dimitrios Karamichos
- North Texas Eye Research Institute, University of North Texas Health Science Center, Fort Worth, TX 76107, USA;
- Department of Pharmaceutical Sciences, University of North Texas Health Science Center, Fort Worth, TX 76107, USA
- Department of Pharmacology and Neuroscience, University of North Texas Health Science Center, Fort Worth, TX 76107, USA
| |
Collapse
|
6
|
Sachan N, Phoon CK, Bu L, Zilberberg L, Ahamed J, Rifkin DB. Binding requirements for latent transforming growth factor Beta2 activation. Matrix Biol Plus 2024; 22:100149. [PMID: 38831847 PMCID: PMC11145359 DOI: 10.1016/j.mbplus.2024.100149] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2024] [Revised: 04/15/2024] [Accepted: 05/11/2024] [Indexed: 06/05/2024] Open
Abstract
Although the mechanism for activation of latent TGFβ1 and TGFβ3 is understood to involve the binding of the TGFβ propeptide (LAP) to both an integrin and an insoluble substrate, the activation of latent TGFβ2 has been unclear because the TGFβ2 LAP does not have the classical integrin binding sequence found in the other two TGFβ isoform LAPs. To assess the potential requirement for covalent linkage with a matrix or cell surface protein for the activation of latent TGFβ2, we generated mice in which the TGFβ2 Cys residue predicted to be involved in binding was mutated to Ser (Tgfb2C24S). We reasoned that, if covalent interaction with a second molecule is required for latent TGFβ2 activation, mutant mice should display a Tgfb2 null (Tgfb2-/-)-like phenotype. Tgfb2C24S mice closely phenocopy Tgfb2-/- mice with death in utero between E18 and P1 and with congenital heart and kidney defects similar to those described for Tgfb2-/- mice. The mutant latent TGFβ2 is secreted at levels similar to WT, yet TGFβ signaling monitored as nuclear pSmad2 is suppressed. We conclude that, like latent TGFβ1, latent TGFβ2 activation requires binding to an immobilized matrix or plasma membrane molecule.
Collapse
Affiliation(s)
- Nalani Sachan
- Department of Cell Biology, NYU Grossman School of Medicine, New York, NY 10016, USA
| | - Colin K.L. Phoon
- Department of Pediatrics, NYU Grossman School of Medicine, New York, NY 10016, USA
| | - Lei Bu
- Department of Medicine, NYU Grossman School of Medicine, New York, NY 10016, USA
| | - Lior Zilberberg
- Department of Cell Biology, NYU Grossman School of Medicine, New York, NY 10016, USA
| | - Jasimuddin Ahamed
- Cardiovascular Biology Research Program, Oklahoma Medical Research Foundation, Oklahoma City, OK 73104, USA
| | - Daniel B. Rifkin
- Department of Cell Biology, NYU Grossman School of Medicine, New York, NY 10016, USA
- Department of Medicine, NYU Grossman School of Medicine, New York, NY 10016, USA
| |
Collapse
|
7
|
Azumah R, Hummitzsch K, Anderson RA, Rodgers RJ. Expression of transforming growth factor β signalling molecules and their correlations with genes in loci linked to polycystic ovary syndrome in human foetal and adult tissues. Reprod Fertil Dev 2024; 36:RD23174. [PMID: 38894494 DOI: 10.1071/rd23174] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2023] [Accepted: 05/20/2024] [Indexed: 06/21/2024] Open
Abstract
Context Altered signalling of androgens, anti-Müllerian hormone or transforming growth factor beta (TGFβ) during foetal development have been implicated in the predisposition to polycystic ovary syndrome (PCOS) in later life, aside from its genetic predisposition. In foetal ovarian fibroblasts, TGFβ1 has been shown to regulate androgen signalling and seven genes located in loci associated with PCOS. Since PCOS exhibits a myriad of symptoms, it likely involves many different organs. Aims To identify the relationships between TGFβ signalling molecules and PCOS candidate genes in different tissues associated with PCOS. Methods Using RNA sequencing data, we examined the expression patterns of TGFβ signalling molecules in the human ovary, testis, heart, liver, kidney, brain tissue, and cerebellum from 4 to 20weeks of gestation and postnatally. We also examined the correlations between gene expression of TGFβ signalling molecules and PCOS candidate genes. Key results TGFβ signalling molecules were dynamically expressed in most tissues prenatally and/or postnatally. FBN3 , a PCOS candidate gene involved in TGFβ signalling, was expressed during foetal development in all tissues. The PCOS candidate genes HMGA2, YAP1 , and RAD50 correlated significantly (P TGFBR1 in six out of the seven tissues examined. Conclusions This study suggests that possible crosstalk occurs between genes in loci associated with PCOS and TGFβ signalling molecules in multiple tissues, particularly during foetal development. Implications Thus, alteration in TGFβ signalling during foetal development could affect many tissues contributing to the multiple phenotypes of PCOS in later life.
Collapse
Affiliation(s)
- Rafiatu Azumah
- Robinson Research Institute, School of Biomedicine, The University of Adelaide, Adelaide, SA 5005, Australia
| | - Katja Hummitzsch
- Robinson Research Institute, School of Biomedicine, The University of Adelaide, Adelaide, SA 5005, Australia
| | - Richard A Anderson
- Medical Research Council Centre for Reproductive Health, Queen's Medical Research Institute, University of Edinburgh, Edinburgh EH16 4TJ, UK
| | - Raymond J Rodgers
- Robinson Research Institute, School of Biomedicine, The University of Adelaide, Adelaide, SA 5005, Australia
| |
Collapse
|
8
|
Iori S, D'Onofrio C, Laham-Karam N, Mushimiyimana I, Lucatello L, Montanucci L, Lopparelli RM, Bonsembiante F, Capolongo F, Pauletto M, Dacasto M, Giantin M. Generation and characterization of cytochrome P450 3A74 CRISPR/Cas9 knockout bovine foetal hepatocyte cell line (BFH12). Biochem Pharmacol 2024; 224:116231. [PMID: 38648904 DOI: 10.1016/j.bcp.2024.116231] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2023] [Revised: 04/04/2024] [Accepted: 04/19/2024] [Indexed: 04/25/2024]
Abstract
In human, the cytochrome P450 3A (CYP3A) subfamily of drug-metabolizing enzymes (DMEs) is responsible for a significant number of phase I reactions, with the CYP3A4 isoform superintending the hepatic and intestinal metabolism of diverse endobiotic and xenobiotic compounds. The CYP3A4-dependent bioactivation of chemicals may result in hepatotoxicity and trigger carcinogenesis. In cattle, four CYP3A genes (CYP3A74, CYP3A76, CYP3A28 and CYP3A24) have been identified. Despite cattle being daily exposed to xenobiotics (e.g., mycotoxins, food additives, drugs and pesticides), the existing knowledge about the contribution of CYP3A in bovine hepatic metabolism is still incomplete. Nowadays, CRISPR/Cas9 mediated knockout (KO) is a valuable method to generate in vivo and in vitro models for studying the metabolism of xenobiotics. In the present study, we successfully performed CRISPR/Cas9-mediated KO of bovine CYP3A74, human CYP3A4-like, in a bovine foetal hepatocyte cell line (BFH12). After clonal expansion and selection, CYP3A74 ablation was confirmed at the DNA, mRNA, and protein level. The subsequent characterization of the CYP3A74 KO clone highlighted significant transcriptomic changes (RNA-sequencing) associated with the regulation of cell cycle and proliferation, immune and inflammatory response, as well as metabolic processes. Overall, this study successfully developed a new CYP3A74 KO in vitro model by using CRISPR/Cas9 technology, which represents a novel resource for xenobiotic metabolism studies in cattle. Furthermore, the transcriptomic analysis suggests a key role of CYP3A74 in bovine hepatocyte cell cycle regulation and metabolic homeostasis.
Collapse
Affiliation(s)
- Silvia Iori
- Department of Comparative Biomedicine and Food Science, University of Padua, Viale dell'Università 16, Legnaro, 35020 Padua, Italy
| | - Caterina D'Onofrio
- Department of Comparative Biomedicine and Food Science, University of Padua, Viale dell'Università 16, Legnaro, 35020 Padua, Italy
| | - Nihay Laham-Karam
- University of Eastern Finland, A.I. Virtanen Institute for Molecular Sciences, Neulaniementie 2, 70211 Kuopio, Finland
| | - Isidore Mushimiyimana
- University of Eastern Finland, A.I. Virtanen Institute for Molecular Sciences, Neulaniementie 2, 70211 Kuopio, Finland
| | - Lorena Lucatello
- Department of Comparative Biomedicine and Food Science, University of Padua, Viale dell'Università 16, Legnaro, 35020 Padua, Italy
| | - Ludovica Montanucci
- Department of Neurology, University of Texas Health Science Center, 6431 Fannin Street, Houston, TX, OH 44106, USA
| | - Rosa Maria Lopparelli
- Department of Comparative Biomedicine and Food Science, University of Padua, Viale dell'Università 16, Legnaro, 35020 Padua, Italy
| | - Federico Bonsembiante
- Department of Animal Medicine, Production and Health, University of Padua, Viale dell'Università 16, Legnaro, 35020 Padua, Italy
| | - Francesca Capolongo
- Department of Comparative Biomedicine and Food Science, University of Padua, Viale dell'Università 16, Legnaro, 35020 Padua, Italy
| | - Marianna Pauletto
- Department of Comparative Biomedicine and Food Science, University of Padua, Viale dell'Università 16, Legnaro, 35020 Padua, Italy
| | - Mauro Dacasto
- Department of Comparative Biomedicine and Food Science, University of Padua, Viale dell'Università 16, Legnaro, 35020 Padua, Italy
| | - Mery Giantin
- Department of Comparative Biomedicine and Food Science, University of Padua, Viale dell'Università 16, Legnaro, 35020 Padua, Italy.
| |
Collapse
|
9
|
Majumder N, Seit S, Bhabesh NS, Ghosh S. An Advanced Bioconjugation Strategy for Covalent Tethering of TGFβ3 with Silk Fibroin Matrices and its Implications in the Chondrogenesis Profile of Human BMSCs and Human Chondrocytes: A Paradigm Shift in Cartilage Tissue Engineering. Adv Healthc Mater 2024; 13:e2303513. [PMID: 38291832 DOI: 10.1002/adhm.202303513] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2023] [Revised: 01/25/2024] [Indexed: 02/01/2024]
Abstract
The transforming growth factor-β class of cytokines plays a significant role in articular cartilage formation from mesenchymal condensation to chondrogenic differentiation. However, their exogenous addition to the chondrogenic media makes the protocol expensive. It reduces the bioavailability of the cytokine to the cells owing to their burst release. The present study demonstrates an advanced bioconjugation strategy to conjugate transforming growth factor-β3 (TGFβ3) with silk fibroin matrix covalently via a cyanuric chloride coupling reaction. The tethering and change in secondary conformation are confirmed using various spectroscopic analyses. To assess the functionality of the chemically modified silk matrix, human bone marrow-derived mesenchymal stem cells (hBMSCs) and chondrocytes are cultured for 28 days in a chondrogenic differentiation medium. Gene expression and histological analysis reveal enhanced expression of chondrogenic markers with intense Safranin-O and Alcian Blue staining in TGFβ3 conjugated silk matrices than where TGFβ3 is exogenously added to the media for both hBMSCs and chondrocytes. Therefore, this study successfully recapitulates the native niche of TGFβ3 and the role of the silk as a growth factor stabilizer. When cultured over TGFβ3 conjugated silk matrices, hBMSCs display increased proteoglycan secretion and maximum chondrogenic trait with attenuation of chondrocyte hypertrophy over human chondrocytes.
Collapse
Affiliation(s)
- Nilotpal Majumder
- Department of Textile and Fibre Engineering, Indian Institute of Technology Delhi, New Delhi, 110016, India
| | - Sinchan Seit
- Department of Textile and Fibre Engineering, Indian Institute of Technology Delhi, New Delhi, 110016, India
| | - Neel Sarovar Bhabesh
- International Centre for Genetic Engineering and Biotechnology (ICGEB), Transcription Regulation group, New Delhi, 110067, India
| | - Sourabh Ghosh
- Department of Textile and Fibre Engineering, Indian Institute of Technology Delhi, New Delhi, 110016, India
| |
Collapse
|
10
|
Leuschner G, Semenova A, Mayr CH, Kapellos TS, Ansari M, Seeliger B, Frankenberger M, Kneidinger N, Hatz RA, Hilgendorff A, Prasse A, Behr J, Mann M, Schiller HB. Mass spectrometry-based autoimmune profiling reveals predictive autoantigens in idiopathic pulmonary fibrosis. iScience 2023; 26:108345. [PMID: 38026226 PMCID: PMC10661358 DOI: 10.1016/j.isci.2023.108345] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2023] [Revised: 09/13/2023] [Accepted: 10/23/2023] [Indexed: 12/01/2023] Open
Abstract
Autoimmunity plays a role in certain types of lung fibrosis, notably connective tissue disease-associated interstitial lung disease (CTD-ILD). In idiopathic pulmonary fibrosis (IPF), an incurable and fatal lung disease, diagnosis typically requires clinical exclusion of autoimmunity. However, autoantibodies of unknown significance have been detected in IPF patients. We conducted computational analysis of B cell transcriptomes in published transcriptomics datasets and developed a proteomic Differential Antigen Capture (DAC) assay that captures plasma antibodies followed by affinity purification of lung proteins coupled to mass spectrometry. We analyzed antibody capture in two independent cohorts of IPF and CTL-ILD patients over two disease progression time points. Our findings revealed significant upregulation of specific immunoglobulins with V-segment bias in IPF across multiple cohorts. We identified a predictive autoimmune signature linked to reduced transplant-free survival in IPF, persisting over time. Notably, autoantibodies against thrombospondin-1 were associated with decreased survival, suggesting their potential as predictive biomarkers.
Collapse
Affiliation(s)
- Gabriela Leuschner
- Institute of Lung Health and Immunity, Comprehensive Pneumology Center with the CPC-M bioArchive, Helmholtz Zentrum München, Member of the German Center for Lung Research (DZL), Munich, Germany
- Department of Internal Medicine V, Ludwig-Maximilian University Munich, CPC-M bioArchive, Munich, Asklepios Clinics, Gauting, Germany
| | - Anna Semenova
- Institute of Lung Health and Immunity, Comprehensive Pneumology Center with the CPC-M bioArchive, Helmholtz Zentrum München, Member of the German Center for Lung Research (DZL), Munich, Germany
| | - Christoph H. Mayr
- Institute of Lung Health and Immunity, Comprehensive Pneumology Center with the CPC-M bioArchive, Helmholtz Zentrum München, Member of the German Center for Lung Research (DZL), Munich, Germany
| | - Theodore S. Kapellos
- Institute of Lung Health and Immunity, Comprehensive Pneumology Center with the CPC-M bioArchive, Helmholtz Zentrum München, Member of the German Center for Lung Research (DZL), Munich, Germany
| | - Meshal Ansari
- Institute of Lung Health and Immunity, Comprehensive Pneumology Center with the CPC-M bioArchive, Helmholtz Zentrum München, Member of the German Center for Lung Research (DZL), Munich, Germany
| | - Benjamin Seeliger
- Department of Pneumology, Hannover Medical School, Member of the German Center for Lung Research (DZL), Hannover, Germany
| | - Marion Frankenberger
- Institute of Lung Health and Immunity, Comprehensive Pneumology Center with the CPC-M bioArchive, Helmholtz Zentrum München, Member of the German Center for Lung Research (DZL), Munich, Germany
- Department of Internal Medicine V, Ludwig-Maximilian University Munich, CPC-M bioArchive, Munich, Asklepios Clinics, Gauting, Germany
| | - Nikolaus Kneidinger
- Department of Internal Medicine V, Ludwig-Maximilian University Munich, CPC-M bioArchive, Munich, Asklepios Clinics, Gauting, Germany
| | - Rudolf A. Hatz
- Center for Thoracic Surgery Munich, Ludwig-Maximilians-University of Munich (LMU), Munich, and Asklepios Medical Center, Member of the German Center for Lung Research (DZL), Gauting, Germany
| | - Anne Hilgendorff
- Institute of Lung Health and Immunity, Comprehensive Pneumology Center with the CPC-M bioArchive, Helmholtz Zentrum München, Member of the German Center for Lung Research (DZL), Munich, Germany
- Center for Comprehensive Developmental Care (CDeCLMU), Hospital of the Ludwig-Maximilians University (LMU), Member of the German Center for Lung Research (DZL), CPC-M bioArchive, Munich, Germany
| | - Antje Prasse
- Department of Pneumology, Hannover Medical School, Member of the German Center for Lung Research (DZL), Hannover, Germany
| | - Jürgen Behr
- Department of Internal Medicine V, Ludwig-Maximilian University Munich, CPC-M bioArchive, Munich, Asklepios Clinics, Gauting, Germany
| | - Matthias Mann
- Max Planck Institute of Biochemistry, Department of Proteomics and Signal Transduction, Martinsried, Germany
| | - Herbert B. Schiller
- Institute of Lung Health and Immunity, Comprehensive Pneumology Center with the CPC-M bioArchive, Helmholtz Zentrum München, Member of the German Center for Lung Research (DZL), Munich, Germany
- Institute of Experimental Pneumology, LMU University Hospital, Ludwig-Maximilians University, Munich, Germany
| |
Collapse
|
11
|
Savin IA, Zenkova MA, Sen’kova AV. Bronchial Asthma, Airway Remodeling and Lung Fibrosis as Successive Steps of One Process. Int J Mol Sci 2023; 24:16042. [PMID: 38003234 PMCID: PMC10671561 DOI: 10.3390/ijms242216042] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2023] [Revised: 11/02/2023] [Accepted: 11/03/2023] [Indexed: 11/26/2023] Open
Abstract
Bronchial asthma is a heterogeneous disease characterized by persistent respiratory system inflammation, airway hyperreactivity, and airflow obstruction. Airway remodeling, defined as changes in airway wall structure such as extensive epithelial damage, airway smooth muscle hypertrophy, collagen deposition, and subepithelial fibrosis, is a key feature of asthma. Lung fibrosis is a common occurrence in the pathogenesis of fatal and long-term asthma, and it is associated with disease severity and resistance to therapy. It can thus be regarded as an irreversible consequence of asthma-induced airway inflammation and remodeling. Asthma heterogeneity presents several diagnostic challenges, particularly in distinguishing between chronic asthma and other pulmonary diseases characterized by disruption of normal lung architecture and functions, such as chronic obstructive pulmonary disease. The search for instruments that can predict the development of irreversible structural changes in the lungs, such as chronic components of airway remodeling and fibrosis, is particularly difficult. To overcome these challenges, significant efforts are being directed toward the discovery and investigation of molecular characteristics and biomarkers capable of distinguishing between different types of asthma as well as between asthma and other pulmonary disorders with similar structural characteristics. The main features of bronchial asthma etiology, pathogenesis, and morphological characteristics as well as asthma-associated airway remodeling and lung fibrosis as successive stages of one process will be discussed in this review. The most common murine models and biomarkers of asthma progression and post-asthmatic fibrosis will also be covered. The molecular mechanisms and key cellular players of the asthmatic process described and systematized in this review are intended to help in the search for new molecular markers and promising therapeutic targets for asthma prediction and therapy.
Collapse
Affiliation(s)
| | | | - Aleksandra V. Sen’kova
- Institute of Chemical Biology and Fundamental Medicine, Siberian Branch of the Russian Academy of Sciences, Lavrent’ev Ave 8, 630090 Novosibirsk, Russia; (I.A.S.); (M.A.Z.)
| |
Collapse
|
12
|
Schlittler M, Pramstaller PP, Rossini A, De Bortoli M. Myocardial Fibrosis in Hypertrophic Cardiomyopathy: A Perspective from Fibroblasts. Int J Mol Sci 2023; 24:14845. [PMID: 37834293 PMCID: PMC10573356 DOI: 10.3390/ijms241914845] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2023] [Revised: 09/25/2023] [Accepted: 09/26/2023] [Indexed: 10/15/2023] Open
Abstract
Hypertrophic cardiomyopathy (HCM) is the most common inherited heart disease and the leading cause of sudden cardiac death in young people. Mutations in genes that encode structural proteins of the cardiac sarcomere are the more frequent genetic cause of HCM. The disease is characterized by cardiomyocyte hypertrophy and myocardial fibrosis, which is defined as the excessive deposition of extracellular matrix proteins, mainly collagen I and III, in the myocardium. The development of fibrotic tissue in the heart adversely affects cardiac function. In this review, we discuss the latest evidence on how cardiac fibrosis is promoted, the role of cardiac fibroblasts, their interaction with cardiomyocytes, and their activation via the TGF-β pathway, the primary intracellular signalling pathway regulating extracellular matrix turnover. Finally, we summarize new findings on profibrotic genes as well as genetic and non-genetic factors involved in the pathophysiology of HCM.
Collapse
Affiliation(s)
| | | | | | - Marzia De Bortoli
- Eurac Research, Institute for Biomedicine (Affiliated to the University of Lübeck), 39100 Bolzano, Italy
| |
Collapse
|
13
|
Lin PK, Davis GE. Extracellular Matrix Remodeling in Vascular Disease: Defining Its Regulators and Pathological Influence. Arterioscler Thromb Vasc Biol 2023; 43:1599-1616. [PMID: 37409533 PMCID: PMC10527588 DOI: 10.1161/atvbaha.123.318237] [Citation(s) in RCA: 11] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2023] [Accepted: 06/23/2023] [Indexed: 07/07/2023]
Abstract
Because of structural and cellular differences (ie, degrees of matrix abundance and cross-linking, mural cell density, and adventitia), large and medium-sized vessels, in comparison to capillaries, react in a unique manner to stimuli that induce vascular disease. A stereotypical vascular injury response is ECM (extracellular matrix) remodeling that occurs particularly in larger vessels in response to injurious stimuli, such as elevated angiotensin II, hyperlipidemia, hyperglycemia, genetic deficiencies, inflammatory cell infiltration, or exposure to proinflammatory mediators. Even with substantial and prolonged vascular damage, large- and medium-sized arteries, persist, but become modified by (1) changes in vascular wall cellularity; (2) modifications in the differentiation status of endothelial cells, vascular smooth muscle cells, or adventitial stem cells (each can become activated); (3) infiltration of the vascular wall by various leukocyte types; (4) increased exposure to critical growth factors and proinflammatory mediators; and (5) marked changes in the vascular ECM, that remodels from a homeostatic, prodifferentiation ECM environment to matrices that instead promote tissue reparative responses. This latter ECM presents previously hidden matricryptic sites that bind integrins to signal vascular cells and infiltrating leukocytes (in coordination with other mediators) to proliferate, invade, secrete ECM-degrading proteinases, and deposit injury-induced matrices (predisposing to vessel wall fibrosis). In contrast, in response to similar stimuli, capillaries can undergo regression responses (rarefaction). In summary, we have described the molecular events controlling ECM remodeling in major vascular diseases as well as the differential responses of arteries versus capillaries to key mediators inducing vascular injury.
Collapse
Affiliation(s)
- Prisca K. Lin
- Department of Molecular Pharmacology and Physiology, Morsani College of Medicine, University of South Florida School of Medicine, Tampa, FL 33612
| | - George E. Davis
- Department of Molecular Pharmacology and Physiology, Morsani College of Medicine, University of South Florida School of Medicine, Tampa, FL 33612
| |
Collapse
|
14
|
Vistnes M, Erusappan PM, Sasi A, Nordén ES, Bergo KK, Romaine A, Lunde IG, Zhang L, Olsen MB, Øgaard J, Carlson CR, Wang CH, Riise J, Dahl CP, Fiane AE, Hauge-Iversen IM, Espe E, Melleby AO, Tønnessen T, Aronsen JM, Sjaastad I, Christensen G. Inhibition of the extracellular enzyme A disintegrin and metalloprotease with thrombospondin motif 4 prevents cardiac fibrosis and dysfunction. Cardiovasc Res 2023; 119:1915-1927. [PMID: 37216909 PMCID: PMC10439713 DOI: 10.1093/cvr/cvad078] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/25/2022] [Revised: 03/14/2023] [Accepted: 03/30/2023] [Indexed: 05/24/2023] Open
Abstract
AIMS Heart failure is a condition with high mortality rates, and there is a lack of therapies that directly target maladaptive changes in the extracellular matrix (ECM), such as fibrosis. We investigated whether the ECM enzyme known as A disintegrin and metalloprotease with thrombospondin motif (ADAMTS) 4 might serve as a therapeutic target in treatment of heart failure and cardiac fibrosis. METHODS AND RESULTS The effects of pharmacological ADAMTS4 inhibition on cardiac function and fibrosis were examined in rats exposed to cardiac pressure overload. Disease mechanisms affected by the treatment were identified based on changes in the myocardial transcriptome. Following aortic banding, rats receiving an ADAMTS inhibitor, with high inhibitory capacity for ADAMTS4, showed substantially better cardiac function than vehicle-treated rats, including ∼30% reduction in E/e' and left atrial diameter, indicating an improvement in diastolic function. ADAMTS inhibition also resulted in a marked reduction in myocardial collagen content and a down-regulation of transforming growth factor (TGF)-β target genes. The mechanism for the beneficial effects of ADAMTS inhibition was further studied in cultured human cardiac fibroblasts producing mature ECM. ADAMTS4 caused a 50% increase in the TGF-β levels in the medium. Simultaneously, ADAMTS4 elicited a not previously known cleavage of TGF-β-binding proteins, i.e. latent-binding protein of TGF-β and extra domain A-fibronectin. These effects were abolished by the ADAMTS inhibitor. In failing human hearts, we observed a marked increase in ADAMTS4 expression and cleavage activity. CONCLUSION Inhibition of ADAMTS4 improves cardiac function and reduces collagen accumulation in rats with cardiac pressure overload, possibly through a not previously known cleavage of molecules that control TGF-β availability. Targeting ADAMTS4 may serve as a novel strategy in heart failure treatment, in particular, in heart failure with fibrosis and diastolic dysfunction.
Collapse
Affiliation(s)
- Maria Vistnes
- Institute for Experimental Medical Research, Oslo University Hospital and University of Oslo, Kirkeveien 166, 0450 Oslo, Norway
- K.G. Jebsen Center for Cardiac Research, University of Oslo, Kirkeveien 166, 0450 Oslo, Norway
- Department of Cardiology, Oslo University Hospital Ullevål, Kirkeveien 166, 0450 Oslo, Norway
- Department of Internal Medicine, Diakonhjemmet Hospital, Diakonveien 12, 0370 Oslo, Norway
| | - Pugazendhi Murugan Erusappan
- Institute for Experimental Medical Research, Oslo University Hospital and University of Oslo, Kirkeveien 166, 0450 Oslo, Norway
- K.G. Jebsen Center for Cardiac Research, University of Oslo, Kirkeveien 166, 0450 Oslo, Norway
| | - Athiramol Sasi
- Institute for Experimental Medical Research, Oslo University Hospital and University of Oslo, Kirkeveien 166, 0450 Oslo, Norway
- K.G. Jebsen Center for Cardiac Research, University of Oslo, Kirkeveien 166, 0450 Oslo, Norway
| | - Einar Sjaastad Nordén
- Institute for Experimental Medical Research, Oslo University Hospital and University of Oslo, Kirkeveien 166, 0450 Oslo, Norway
- K.G. Jebsen Center for Cardiac Research, University of Oslo, Kirkeveien 166, 0450 Oslo, Norway
| | - Kaja Knudsen Bergo
- Institute for Experimental Medical Research, Oslo University Hospital and University of Oslo, Kirkeveien 166, 0450 Oslo, Norway
- K.G. Jebsen Center for Cardiac Research, University of Oslo, Kirkeveien 166, 0450 Oslo, Norway
| | - Andreas Romaine
- Institute for Experimental Medical Research, Oslo University Hospital and University of Oslo, Kirkeveien 166, 0450 Oslo, Norway
- K.G. Jebsen Center for Cardiac Research, University of Oslo, Kirkeveien 166, 0450 Oslo, Norway
| | - Ida Gjervold Lunde
- Institute for Experimental Medical Research, Oslo University Hospital and University of Oslo, Kirkeveien 166, 0450 Oslo, Norway
- K.G. Jebsen Center for Cardiac Research, University of Oslo, Kirkeveien 166, 0450 Oslo, Norway
| | - Lili Zhang
- Institute for Experimental Medical Research, Oslo University Hospital and University of Oslo, Kirkeveien 166, 0450 Oslo, Norway
- K.G. Jebsen Center for Cardiac Research, University of Oslo, Kirkeveien 166, 0450 Oslo, Norway
| | - Maria Belland Olsen
- Research Institute of Internal Medicine, Oslo University Hospital and University of Oslo, Sognsvannsveien 20, 0372 Oslo, Norway
| | - Jonas Øgaard
- Research Institute of Internal Medicine, Oslo University Hospital and University of Oslo, Sognsvannsveien 20, 0372 Oslo, Norway
| | - Cathrine Rein Carlson
- Institute for Experimental Medical Research, Oslo University Hospital and University of Oslo, Kirkeveien 166, 0450 Oslo, Norway
| | - Christian Hjorth Wang
- Department of Internal Medicine, Diakonhjemmet Hospital, Diakonveien 12, 0370 Oslo, Norway
| | - Jon Riise
- Department of Oncology, Oslo University Hospital, Ullernchausseen 70, 0379 Oslo, Norway
| | - Christen Peder Dahl
- Department of Cardiology, Oslo University Hospital Rikshospitalet, Sognsvannsveien 20, 0372 Oslo, Norway
| | - Arnt Eltvedt Fiane
- Department of Cardiothoracic Surgery, Oslo University Hospital, Sognsvannsveien 20, 0372 Oslo, Norway
- Faculty of Medicine, University of Oslo, Klaus Torgårdsvei 3, 0372 Oslo, Norway
| | - Ida Marie Hauge-Iversen
- Institute for Experimental Medical Research, Oslo University Hospital and University of Oslo, Kirkeveien 166, 0450 Oslo, Norway
- K.G. Jebsen Center for Cardiac Research, University of Oslo, Kirkeveien 166, 0450 Oslo, Norway
| | - Emil Espe
- Institute for Experimental Medical Research, Oslo University Hospital and University of Oslo, Kirkeveien 166, 0450 Oslo, Norway
- K.G. Jebsen Center for Cardiac Research, University of Oslo, Kirkeveien 166, 0450 Oslo, Norway
| | - Arne Olav Melleby
- Institute for Experimental Medical Research, Oslo University Hospital and University of Oslo, Kirkeveien 166, 0450 Oslo, Norway
- Department of Molecular Medicine, Institute of Basic Medical Sciences, University of Oslo, Sognsvannsveien 9, 0372 Oslo, Norway
| | - Theis Tønnessen
- Institute for Experimental Medical Research, Oslo University Hospital and University of Oslo, Kirkeveien 166, 0450 Oslo, Norway
- K.G. Jebsen Center for Cardiac Research, University of Oslo, Kirkeveien 166, 0450 Oslo, Norway
- Department of Cardiothoracic Surgery, Oslo University Hospital, Sognsvannsveien 20, 0372 Oslo, Norway
| | - Jan Magnus Aronsen
- Faculty of Medicine, University of Oslo, Klaus Torgårdsvei 3, 0372 Oslo, Norway
- Department of Molecular Medicine, Institute of Basic Medical Sciences, University of Oslo, Sognsvannsveien 9, 0372 Oslo, Norway
- Department of Pharmacology, Oslo University Hospital Rikshospitalet, Sognsvannsveien 20, 0372 Oslo, Norway
| | - Ivar Sjaastad
- Institute for Experimental Medical Research, Oslo University Hospital and University of Oslo, Kirkeveien 166, 0450 Oslo, Norway
- K.G. Jebsen Center for Cardiac Research, University of Oslo, Kirkeveien 166, 0450 Oslo, Norway
| | - Geir Christensen
- Institute for Experimental Medical Research, Oslo University Hospital and University of Oslo, Kirkeveien 166, 0450 Oslo, Norway
- K.G. Jebsen Center for Cardiac Research, University of Oslo, Kirkeveien 166, 0450 Oslo, Norway
| |
Collapse
|
15
|
Le VQ, Zhao B, Ramesh S, Toohey C, DeCosta A, Mintseris J, Liu X, Gygi S, Springer TA. A specialized integrin-binding motif enables proTGF-β2 activation by integrin αVβ6 but not αVβ8. Proc Natl Acad Sci U S A 2023; 120:e2304874120. [PMID: 37279271 PMCID: PMC10268255 DOI: 10.1073/pnas.2304874120] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2023] [Accepted: 04/28/2023] [Indexed: 06/08/2023] Open
Abstract
Activation of latent transforming growth factor (TGF)-β2 is incompletely understood. Unlike TGF-β1 and β3, the TGF-β2 prodomain lacks a seven-residue RGDLXX (L/I) integrin-recognition motif and is thought not to be activated by integrins. Here, we report the surprising finding that TGF-β2 contains a related but divergent 13-residue integrin-recognition motif (YTSGDQKTIKSTR) that specializes it for activation by integrin αVβ6 but not αVβ8. Both classes of motifs compete for the same binding site in αVβ6. Multiple changes in the longer motif underlie its specificity. ProTGF-β2 structures define interesting differences from proTGF-β1 and the structural context for activation by αVβ6. Some integrin-independent activation is also seen for proTGF-β2 and even more so for proTGF-β3. Our findings have important implications for therapeutics to αVβ6 in clinical trials for fibrosis, in which inhibition of TGF-β2 activation has not been anticipated.
Collapse
Affiliation(s)
- Viet Q. Le
- Program in Cellular and Molecular Medicine, Department of Pediatrics, Boston Children’s Hospital, Boston, MA02115
- Department of Biological Chemistry and Molecular Pharmacology, Harvard Medical School, Boston, MA02115
| | - Bo Zhao
- Program in Cellular and Molecular Medicine, Department of Pediatrics, Boston Children’s Hospital, Boston, MA02115
- Department of Biological Chemistry and Molecular Pharmacology, Harvard Medical School, Boston, MA02115
| | - Siddanth Ramesh
- Program in Cellular and Molecular Medicine, Department of Pediatrics, Boston Children’s Hospital, Boston, MA02115
| | - Cameron Toohey
- Program in Cellular and Molecular Medicine, Department of Pediatrics, Boston Children’s Hospital, Boston, MA02115
| | - Adam DeCosta
- Program in Cellular and Molecular Medicine, Department of Pediatrics, Boston Children’s Hospital, Boston, MA02115
| | - Julian Mintseris
- Department of Cell Biology, Harvard Medical School,Boston, MA02115
| | - Xinyue Liu
- Department of Cell Biology, Harvard Medical School,Boston, MA02115
| | - Steven Gygi
- Department of Cell Biology, Harvard Medical School,Boston, MA02115
| | - Timothy A. Springer
- Program in Cellular and Molecular Medicine, Department of Pediatrics, Boston Children’s Hospital, Boston, MA02115
- Department of Biological Chemistry and Molecular Pharmacology, Harvard Medical School, Boston, MA02115
| |
Collapse
|
16
|
McKnite A, Kim HS, Silva J, Christian JL. Lack of evidence that fibrillin1 regulates bone morphogenetic protein 4 activity in kidney or lung. Dev Dyn 2023; 252:761-769. [PMID: 36825302 DOI: 10.1002/dvdy.578] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2022] [Revised: 01/22/2023] [Accepted: 02/05/2023] [Indexed: 02/25/2023] Open
Abstract
BACKGROUND The Bone morphogenetic protein 4 (BMP4) precursor protein is cleaved at two sites to generate an active ligand and inactive prodomain. The ligand and prodomain form a noncovalent complex following the first cleavage, but dissociate after the second cleavage. Transient formation of this complex is essential to generate a stable ligand. Fibrillins (FBNs) bind to the prodomains of BMPs, and can regulate the activity of some ligands. Whether FBNs regulate BMP4 activity is unknown. RESULTS Mice heterozygous for a null allele of Bmp4 showed incompletely penetrant kidney defects and females showed increased mortality between postnatal day 6 and 8. Removal of one copy of Fbn1 did not rescue or enhance kidney defects or lethality. The lungs of Fbn1+/- females had enlarged airspaces that were unchanged in Bmp4+/- ;Fbn1+/- mice. Additionally, removal of one or both alleles of Fbn1 had no effect on steady state levels of BMP4 ligand or on BMP activity in postnatal lungs. CONCLUSIONS These findings do not support the hypothesis that FBN1 plays a role in promoting BMP4 ligand stability or signaling, nor do they support the alternative hypothesis that FBN1 sequesters BMP4 in a latent form, as is the case for other BMP family members.
Collapse
Affiliation(s)
- Autumn McKnite
- Departments of Neurobiology and Internal Medicine, Division of Hematology and Hematologic Malignancies, University of Utah, School of Medicine, Salt Lake City, Utah, USA
| | - Hyung-Seok Kim
- Departments of Neurobiology and Internal Medicine, Division of Hematology and Hematologic Malignancies, University of Utah, School of Medicine, Salt Lake City, Utah, USA
| | - Joshua Silva
- Departments of Neurobiology and Internal Medicine, Division of Hematology and Hematologic Malignancies, University of Utah, School of Medicine, Salt Lake City, Utah, USA
| | - Jan L Christian
- Departments of Neurobiology and Internal Medicine, Division of Hematology and Hematologic Malignancies, University of Utah, School of Medicine, Salt Lake City, Utah, USA
| |
Collapse
|
17
|
Donovan C, Cogswell D, Sun M, Adams S, Avila MY, Margo CE, Koch M, Espana EM. Collagen XII regulates stromal wound closure. Exp Eye Res 2023; 230:109456. [PMID: 36967080 PMCID: PMC10133200 DOI: 10.1016/j.exer.2023.109456] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2023] [Revised: 03/03/2023] [Accepted: 03/19/2023] [Indexed: 03/30/2023]
Abstract
The role of collagen XII in regulating injury repair and reestablishment of corneal function is unknown. This manuscript aims to investigate the role(s) of collagen XII in the repair of incisional and debridement injuries in an adult mouse model. Two different types of injury in wild type and Col12a1-/- corneas were created to investigate the effects of collagen XII -in wound repair and scar formation-by using clinical photographs, immunohistology, second harmonic generation imaging and electron microscopy. Results showed that collagen XII is a regulator of wound closure after incisional injuries. Absence of collagen XII retarded wound closure and the wound healing process. These findings show that collagen XII regulates fibrillogenesis, CD68 cell lineage infiltration, and myofibroblast survival following injury. In vitro studies suggest that collagen XII regulates deposition of an early and provisional matrix by interacting with two proteins regulating early matrix deposition: fibronectin and LTBP1(latent transforming growth factor β binding protein 1). In conclusion, collagen XII regulates tissue repair in corneal incisional wounds. Understanding the function of collagen XII during wound healing has significant translational value.
Collapse
Affiliation(s)
| | - Devon Cogswell
- From the Cornea, External Disease Service, Department of Ophthalmology, USA
| | - Mei Sun
- From the Cornea, External Disease Service, Department of Ophthalmology, USA
| | - Sheila Adams
- From the Cornea, External Disease Service, Department of Ophthalmology, USA
| | - Marcel Y Avila
- Departament of Ophthalmology, Universidad Nacional de Colombia, Bogota, Colombia
| | - Curtis E Margo
- From the Cornea, External Disease Service, Department of Ophthalmology, USA; Pathology and Cell Biology, Morsani College of Medicine, University of South Florida, Tampa, FL, USA
| | - Manuel Koch
- Institute for Dental Research and Oral Musculoskeletal Biology, Center for Biochemistry, University of Cologne, Cologne, Germany
| | - Edgar M Espana
- From the Cornea, External Disease Service, Department of Ophthalmology, USA; Molecular Pharmacology and Physiology, USA.
| |
Collapse
|
18
|
Hanson I, Pitman KE, Edin NFJ. The Role of TGF-β3 in Radiation Response. Int J Mol Sci 2023; 24:ijms24087614. [PMID: 37108775 PMCID: PMC10141893 DOI: 10.3390/ijms24087614] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2023] [Revised: 04/18/2023] [Accepted: 04/19/2023] [Indexed: 04/29/2023] Open
Abstract
Transforming growth factor-beta 3 (TGF-β3) is a ubiquitously expressed multifunctional cytokine involved in a range of physiological and pathological conditions, including embryogenesis, cell cycle regulation, immunoregulation, and fibrogenesis. The cytotoxic effects of ionizing radiation are employed in cancer radiotherapy, but its actions also influence cellular signaling pathways, including that of TGF-β3. Furthermore, the cell cycle regulating and anti-fibrotic effects of TGF-β3 have identified it as a potential mitigator of radiation- and chemotherapy-induced toxicity in healthy tissue. This review discusses the radiobiology of TGF-β3, its induction in tissue by ionizing radiation, and its potential radioprotective and anti-fibrotic effects.
Collapse
Affiliation(s)
- Ingunn Hanson
- Department of Physics, University of Oslo, 0371 Oslo, Norway
| | | | - Nina F J Edin
- Department of Physics, University of Oslo, 0371 Oslo, Norway
| |
Collapse
|
19
|
Nicholas SE, Choi AJ, Lam TN, Basu SK, Mandal N, Karamichos D. Potentiation of Sphingolipids and TGF-β in the human corneal stroma reveals intricate signaling pathway crosstalks. Exp Eye Res 2023; 231:109487. [PMID: 37084874 DOI: 10.1016/j.exer.2023.109487] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2023] [Revised: 04/11/2023] [Accepted: 04/18/2023] [Indexed: 04/23/2023]
Abstract
Corneal haze brought on by fibrosis due to insult can lead to partial or complete vision loss. Currently, corneal transplantation is the gold standard for treating severe corneal fibrosis, which comes with the risk of rejection and the issue of donor tissue shortages. Sphingolipids (SPLs) are known to be associated with fibrosis in various tissues and organs, including the cornea. We previously reported that SPLs are tightly related to Transforming Growth Factor β (TGF-β) signaling and corneal fibrogenesis. This study aimed to elucidate the interplay of SPLs, specifically sphingosine-1-phosphate (S1P) signaling, and its' interactions with TGF-β signaling through detailed analyses of the corresponding downstream signaling targets in the context of corneal fibrosis, in vitro. Healthy human corneal fibroblasts (HCFs) were isolated, plated on polycarbonate membranes, and stimulated with a stable Vitamin C derivative. The 3D constructs were treated with either 5 μM sphingosine-1-phosphate (S1P), 5 μM SPHK I2 (I2; inhibitor of sphingosine kinase 1, one of the two enzymes responsible for generating S1P in mammalian cells), 0.1 ng/mL TGF-β1, or 0.1 ng/mL TGF-β3. Cultures with control medium-only served as controls. All 3D constructs were examined for protein expression of fibrotic markers, SPLs, TGF-βs, and relevant downstream signaling pathways. This data revealed no significant changes in any LTBP (latent TGF-β binding proteins) expression when stimulated with S1P or I2. However, LTBP1 was significantly upregulated via stimulation of TGF-β1 and TGF-β3, whereas LTBP2 was significantly upregulated only with TGF-β3 stimulation. Significant downregulation of TGF-β receptor II (TGF-βRII) following S1P stimulation but significant upregulation following I2 stimulation was observed. Following TGF-β1, S1P, and I2 stimulation, phospho-SMAD2 (pSMAD2) was significantly downregulated. Furthermore, I2 stimulation led to significant downregulation of SMAD4. Adhesion/proliferation/transcription regulation targets, SRC, FAK, and pERK 1/2 were all significantly downregulated by exogenous S1P, whereas I2 only significantly downregulated FAK. Exogenous TGF-β3 caused significant upregulation of AKT. Interestingly, both I2 and TGF-β3 caused significant downregulation of JNK expression. Lastly, TGF-β1 led to significant upregulation of sphingosine kinase 1 (SphK1) and sphingosine-1-phosphate receptor 3 (S1PR3), whereas TGF-β3 caused significant upregulation of only SphK1. Together with previously published work from our group and others, S1P inhibition exhibits great potential as an efficacious anti-fibrotic modality in human corneal stromal ECM. The current findings shed further light on a very complex and rather incompletely investigated mechanism, and cement the intricate crosstalk between SPLs and TGF-β in corneal fibrogenesis. Future studies will dictate the potential of utilizing SPLs/TGF-β signaling modulators as novel therapeutics in corneal fibrosis.
Collapse
Affiliation(s)
- Sarah E Nicholas
- North Texas Eye Research Institute, University of North Texas Health Science Center, Fort Worth, TX, 76107, USA; Department of Pharmaceutical Sciences, University of North Texas HSC, Fort Worth, TX, 76107, USA
| | - Alexander J Choi
- North Texas Eye Research Institute, University of North Texas Health Science Center, Fort Worth, TX, 76107, USA; Department of Pharmaceutical Sciences, University of North Texas HSC, Fort Worth, TX, 76107, USA
| | - Thi N Lam
- Department of Ophthalmology/Dean McGee Eye Institute, University of Oklahoma Health Sciences Center, Oklahoma City, OK, 73104, USA
| | - Sandip K Basu
- Department of Ophthalmology, University of Tennessee Health Science Center, Memphis, TN, 38163, USA
| | - Nawajes Mandal
- Department of Ophthalmology, University of Tennessee Health Science Center, Memphis, TN, 38163, USA; Department of Anatomy and Neurobiology, University of Tennessee HSC, Memphis, TN, 38163, USA
| | - Dimitrios Karamichos
- North Texas Eye Research Institute, University of North Texas Health Science Center, Fort Worth, TX, 76107, USA; Department of Pharmaceutical Sciences, University of North Texas HSC, Fort Worth, TX, 76107, USA; Department of Pharmacology and Neuroscience, University of North Texas HSC, Fort Worth, TX, 76107, USA.
| |
Collapse
|
20
|
Piekarska K, Bonowicz K, Grzanka A, Jaworski ŁM, Reiter RJ, Slominski AT, Steinbrink K, Kleszczyński K, Gagat M. Melatonin and TGF-β-Mediated Release of Extracellular Vesicles. Metabolites 2023; 13:metabo13040575. [PMID: 37110233 PMCID: PMC10142249 DOI: 10.3390/metabo13040575] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2023] [Revised: 04/12/2023] [Accepted: 04/17/2023] [Indexed: 04/29/2023] Open
Abstract
The immune system, unlike other systems, must be flexible and able to "adapt" to fully cope with lurking dangers. The transition from intracorporeal balance to homeostasis disruption is associated with activation of inflammatory signaling pathways, which causes modulation of the immunology response. Chemotactic cytokines, signaling molecules, and extracellular vesicles act as critical mediators of inflammation and participate in intercellular communication, conditioning the immune system's proper response. Among the well-known cytokines allowing for the development and proper functioning of the immune system by mediating cell survival and cell-death-inducing signaling, the tumor necrosis factor α (TNF-α) and transforming growth factor β (TGF-β) are noteworthy. The high bloodstream concentration of those pleiotropic cytokines can be characterized by anti- and pro-inflammatory activity, considering the powerful anti-inflammatory and anti-oxidative stress capabilities of TGF-β known from the literature. Together with the chemokines, the immune system response is also influenced by biologically active chemicals, such as melatonin. The enhanced cellular communication shows the relationship between the TGF-β signaling pathway and the extracellular vesicles (EVs) secreted under the influence of melatonin. This review outlines the findings on melatonin activity on TGF-β-dependent inflammatory response regulation in cell-to-cell communication leading to secretion of the different EV populations.
Collapse
Affiliation(s)
- Klaudia Piekarska
- Department of Histology and Embryology, Collegium Medicum in Bydgoszcz, Nicolaus Copernicus University in Torun, 85-092 Bydgoszcz, Poland
| | - Klaudia Bonowicz
- Department of Histology and Embryology, Collegium Medicum in Bydgoszcz, Nicolaus Copernicus University in Torun, 85-092 Bydgoszcz, Poland
| | - Alina Grzanka
- Department of Histology and Embryology, Collegium Medicum in Bydgoszcz, Nicolaus Copernicus University in Torun, 85-092 Bydgoszcz, Poland
| | - Łukasz M Jaworski
- Department of Histology and Embryology, Collegium Medicum in Bydgoszcz, Nicolaus Copernicus University in Torun, 85-092 Bydgoszcz, Poland
| | - Russel J Reiter
- Department of Cell Systems and Anatomy, UT Health, Long School of Medicine, San Antonio, TX 78229, USA
| | - Andrzej T Slominski
- Department of Dermatology, Comprehensive Cancer Center, University of Alabama at Birmingham, Birmingham, AL 35294, USA
- Pathology and Laboratory Medicine Service, VA Medical Center, Birmingham, AL 35294, USA
| | - Kerstin Steinbrink
- Department of Dermatology, University of Münster, Von-Esmarch-Str. 58, 48149 Münster, Germany
| | - Konrad Kleszczyński
- Department of Dermatology, University of Münster, Von-Esmarch-Str. 58, 48149 Münster, Germany
| | - Maciej Gagat
- Department of Histology and Embryology, Collegium Medicum in Bydgoszcz, Nicolaus Copernicus University in Torun, 85-092 Bydgoszcz, Poland
| |
Collapse
|
21
|
Daly SM, Peraza A, Newfeld SJ. Computational analysis of prodomain cysteines in human TGF-β proteins reveals frequent loss of disulfide-dependent regulation in tumors. G3 (BETHESDA, MD.) 2022; 12:jkac271. [PMID: 36214621 PMCID: PMC9713452 DOI: 10.1093/g3journal/jkac271] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/01/2022] [Accepted: 09/29/2022] [Indexed: 03/23/2024]
Abstract
The functionally diverse members of the human Transforming Growth Factor-β (TGF-β) family are tightly regulated. TGF-β regulation includes 2 disulfide-dependent mechanisms-dimerization and partner protein binding. The specific cysteines participating in these regulatory mechanisms are known in just 3 of the 33 human TGF-β proteins. Human prodomain alignments revealed that 24 TGF-β prodomains contain conserved cysteines in 2 highly exposed locations. There are 3 in the region of the β8 helix that mediates dimerization near the prodomain carboxy terminus. There are 2 in the Association region that mediates partner protein binding near the prodomain amino terminus. The alignments predict the specific cysteines contributing to disulfide-dependent regulation of 72% of human TGF-β proteins. Database mining then identified 9 conserved prodomain cysteine mutations and their disease phenotypes in 7 TGF-β proteins. Three common adenoma phenotypes for prodomain cysteine mutations suggested 7 new regulatory heterodimer pairs. Two common adenoma phenotypes for prodomain and binding partner cysteine mutations revealed 17 new regulatory interactions. Overall, the analysis of human TGF-β prodomains suggests a significantly expanded scope of disulfide-dependent regulation by heterodimerization and partner protein binding; regulation that is often lost in tumors.
Collapse
Affiliation(s)
- Samantha M Daly
- School of Life Sciences, Arizona State University, Tempe, AZ 85287-4501, USA
| | - Ashley Peraza
- School of Life Sciences, Arizona State University, Tempe, AZ 85287-4501, USA
| | - Stuart J Newfeld
- School of Life Sciences, Arizona State University, Tempe, AZ 85287-4501, USA
| |
Collapse
|
22
|
Bhattacharya K, Saha I, Sen D, Bose C, Chaudhuri GR, Dutta S, Sengupta P, Bhattacharya S, Barman SS, Syamal AK. Role of anti-Mullerian hormone in polycystic ovary syndrome. MIDDLE EAST FERTILITY SOCIETY JOURNAL 2022. [DOI: 10.1186/s43043-022-00123-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Abstract
AbstractPolycystic ovary syndrome (PCOS) is the most common gynecological endocrine disorders affecting up to 10% of all females in their reproductive age, and its cause of onset is still elusive. A spectrum of recent research reflected diverse associations between increased plasma level of anti-Mullerian hormone (AMH) and different clinical features of PCOS. Since AMH levels reflect the pool of growing follicles that potentially can ovulate, it can be stated that serum AMH levels can be used to assess the “functional ovarian reserve,” rather mentioning it as the “ovarian reserve.” AMH also appears to be a premier endocrine parameter for the assessment of atrophied ovarian follicular pool in response to age of individuals. AMH hinders the follicular development as well as the follicular recruitment and ultimately resulting in follicular arrest which is the key pathophysiologic condition for the onset of PCOS. Furthermore, FSH-induced aromatase activity remains inhibited by AMH that aids emergence of other associated clinical signs of PCOS, such as excess androgen, followed by insulin resistance among the PCOS individuals. Given the versatile association of AMH with PCOS and scarcity in literature explaining the underling mechanisms how AMH relates with PCOS, this review article will discuss the roles of AMH in the pathogenesis of PCOS which may introduce a new era in treatment approach of PCOS.
Collapse
|
23
|
Singh K, Sachan N, Ene T, Dabovic B, Rifkin D. Latent Transforming Growth Factor β Binding Protein 3 Controls Adipogenesis. Matrix Biol 2022; 112:155-170. [PMID: 35933071 DOI: 10.1016/j.matbio.2022.08.001] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2022] [Revised: 07/29/2022] [Accepted: 08/02/2022] [Indexed: 11/24/2022]
Abstract
Transforming growth factor-beta (TGFβ) is released from cells as part of a trimeric latent complex consisting of TGFβ, the TGFβ propeptides, and either a latent TGFβ binding protein (LTBP) or glycoprotein-A repetitions predominant (GARP) protein. LTBP1 and 3 modulate latent TGFβ function with respect to secretion, matrix localization, and activation and, therefore, are vital for the proper function of the cytokine in a number of tissues. TGFβ modulates stem cell differentiation into adipocytes (adipogenesis), but the potential role of LTBPs in this process has not been studied. We observed that 72 h post adipogenesis initiation Ltbp1, 2, and 4 expression levels decrease by 74-84%, whereas Ltbp3 expression levels remain constant during adipogenesis. We found that LTBP3 silencing in C3H/10T1/2 cells reduced adipogenesis, as measured by the percentage of cells with lipid vesicles and the expression of the transcription factor peroxisome proliferator-activated receptor gamma (PPARγ). Lentiviral mediated expression of an Ltbp3 mRNA resistant to siRNA targeting rescued the phenotype, validating siRNA specificity. Knockdown (KD) of Ltbp3 expression in 3T3-L1, M2, and primary bone marrow stromal cells (BMSC) indicated a similar requirement for Ltbp3. Epididymal and inguinal white adipose tissue fat pad weights of Ltbp3-/- mice were reduced by 62% and 57%, respectively, compared to wild-type mice. Inhibition of adipogenic differentiation upon LTBP3 loss is mediated by TGFβ, as TGFβ neutralizing antibody and TGFβ receptor I kinase blockade rescue the LTBP3 KD phenotype. These results indicate that LTBP3 has a TGFβ-dependent function in adipogenesis both in vitro and possibly in vivo.
Collapse
Affiliation(s)
- Karan Singh
- Department of Cell Biology, New York University Grossman School of Medicine, New York, NY, USA
| | - Nalani Sachan
- Department of Cell Biology, New York University Grossman School of Medicine, New York, NY, USA
| | - Taylor Ene
- Department of Cell Biology, New York University Grossman School of Medicine, New York, NY, USA
| | - Branka Dabovic
- Division of Advanced Research Technologies, New York University Grossman School of Medicine, New York, NY, USA
| | - Daniel Rifkin
- Department of Cell Biology, New York University Grossman School of Medicine, New York, NY, USA; Department of Medicine, New York University Grossman School of Medicine, New York, NY, USA.
| |
Collapse
|
24
|
LTBP1 promotes fibrillin incorporation into the extracellular matrix. Matrix Biol 2022; 110:60-75. [PMID: 35452817 DOI: 10.1016/j.matbio.2022.04.004] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2021] [Revised: 04/12/2022] [Accepted: 04/16/2022] [Indexed: 12/23/2022]
Abstract
LTBP1 is a large extracellular matrix protein and an associated ligand of fibrillin-microfibrils. Knowledge of LTBP1 functions is largely limited to its role in targeting and sequestering TGFβ growth factors within the extracellular matrix, thereby regulating their bioavailability. However, the recent description of a wide spectrum of phenotypes in multiple tissues in patients harboring LTBP1 pathogenic variants suggests a multifaceted role of the protein in the homeostasis of connective tissues. To better understand the human pathology caused by LTBP1 deficiency it is important to investigate its functional role in extracellular matrix formation. In this study, we show that LTBP1 coordinates the incorporation of fibrillin-1 and -2 into the extracellular matrix in vitro. We also demonstrate that this function is differentially exerted by the two isoforms, the short and long forms of LTBP1. Thereby our findings uncover a novel TGFβ-independent LTBP1 function potentially contributing to the development of connective tissue disorders.
Collapse
|
25
|
Christian JL, Hill CS. Transforming growth factor-β family biology: From basic mechanisms to roles in development and disease. Dev Dyn 2022; 251:6-9. [PMID: 34978121 DOI: 10.1002/dvdy.445] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
Affiliation(s)
- Jan L Christian
- Department of Neurobiology, University of Utah, Salt Lake City, Utah, USA
| | | |
Collapse
|
26
|
Inoue I, Qin XY, Masaki T, Mezaki Y, Matsuura T, Kojima S, Furutani Y. Latency-associated Peptide Degradation Fragments Produced in Stellate Cells and Phagocytosed by Macrophages in Bile Duct-ligated Mouse Liver. J Histochem Cytochem 2021; 69:723-730. [PMID: 34674567 DOI: 10.1369/00221554211053665] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
Transforming growth factor-β (TGF-β) activation is involved in various pathogeneses, such as fibrosis and malignancy. We previously showed that TGF-β was activated by serine protease plasma kallikrein-dependent digestion of latency-associated peptides (LAPs) and developed a method to detect LAP degradation products (LAP-DPs) in the liver and blood using specific monoclonal antibodies. Clinical studies have revealed that blood LAP-DPs are formed in the early stages of liver fibrosis. This study aimed to identify the cell source of LAP-DP formation during liver fibrosis. The N-terminals of LAP-DPs ending at residue Arg58 (R58) were stained in liver sections of a bile duct-ligated liver fibrosis model at 3 and 13 days. R58 LAP-DPs were detected in quiescent hepatic stellate cells at day 3 and in macrophages on day 13 after ligation of the bile duct. We then performed a detailed analysis of the axial localization of R58 signals in a single macrophage, visualized the cell membrane with the anti-CLEC4F antibody, and found R58 LAP-DPs surrounded by the membrane in phagocytosed debris that appeared to be dead cells. These findings suggest that in the early stages of liver fibrosis, TGF-β is activated on the membrane of stellate cells, and then the cells are phagocytosed after cell death.
Collapse
Affiliation(s)
- Ikuyo Inoue
- RIKEN Cluster for Pioneering Research Liver Cancer Prevention Research Unit, Saitama, Japan
| | - Xian-Yang Qin
- RIKEN Cluster for Pioneering Research Liver Cancer Prevention Research Unit, Saitama, Japan
| | - Takahiro Masaki
- Department of Laboratory Medicine, The Jikei University School of Medicine, Tokyo, Japan
| | - Yoshihiro Mezaki
- Department of Laboratory Medicine, The Jikei University School of Medicine, Tokyo, Japan
| | - Tomokazu Matsuura
- RIKEN Cluster for Pioneering Research Liver Cancer Prevention Research Unit, Saitama, Japan.,Department of Laboratory Medicine, The Jikei University School of Medicine, Tokyo, Japan
| | - Soichi Kojima
- RIKEN Cluster for Pioneering Research Liver Cancer Prevention Research Unit, Saitama, Japan
| | - Yutaka Furutani
- RIKEN Cluster for Pioneering Research Liver Cancer Prevention Research Unit, Saitama, Japan
| |
Collapse
|