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Tian Z, Shofer FS, Fan M, Sandroni AZ, Yao L, Han L, Qin L, Enomoto-Iwamoto M, Zhang Y. ADAM8 inactivation retards intervertebral disc degeneration in mice. Genes Dis 2024; 11:101059. [PMID: 38292194 PMCID: PMC10825293 DOI: 10.1016/j.gendis.2023.06.028] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2022] [Revised: 03/17/2023] [Accepted: 06/27/2023] [Indexed: 02/01/2024] Open
Affiliation(s)
- Zuozhen Tian
- Department of Physical Medicine & Rehabilitation, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA 19146, USA
| | - Frances S. Shofer
- Department of Emergency Medicine, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA 19104, USA
| | - Mingyue Fan
- School of Biomedical Engineering, Science & Health Systems, Drexel University, Philadelphia, PA 19104, USA
| | - Alec Z. Sandroni
- Department of Physical Medicine & Rehabilitation, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA 19146, USA
| | - Lutian Yao
- Department of Orthopedic Surgery, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA 19104, USA
- Department of Orthopedics/Sports Medicine and Joint Surgery, the First Hospital of China Medical University, Shenyang, Liaoning 110001, China
| | - Lin Han
- School of Biomedical Engineering, Science & Health Systems, Drexel University, Philadelphia, PA 19104, USA
| | - Ling Qin
- Department of Orthopedic Surgery, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA 19104, USA
| | - Motomi Enomoto-Iwamoto
- Department of Orthopedics, University of Maryland School of Medicine, Baltimore, MD 21201, USA
| | - Yejia Zhang
- Department of Physical Medicine & Rehabilitation, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA 19146, USA
- Department of Orthopedic Surgery, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA 19104, USA
- Section of Rehabilitation Medicine, Corporal Michael J. Crescenz Veterans Affairs Medical Center, Philadelphia, PA 19104, USA
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Zhu Y. Metalloproteases in gonad formation and ovulation. Gen Comp Endocrinol 2021; 314:113924. [PMID: 34606745 PMCID: PMC8576836 DOI: 10.1016/j.ygcen.2021.113924] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/29/2021] [Revised: 09/27/2021] [Accepted: 09/29/2021] [Indexed: 01/13/2023]
Abstract
Changes in expression or activation of various metalloproteases including matrix metalloproteases (Mmp), a disintegrin and metalloprotease (Adam) and a disintegrin and metalloprotease with thrombospondin motif (Adamts), and their endogenous inhibitors (tissue inhibitors of metalloproteases, Timp), have been shown to be critical for ovulation in various species from studies in past decades. Some of these metalloproteases such as Adamts1, Adamts9, Mmp2, and Mmp9 have also been shown to be regulated by luteinizing hormone (LH) and/or progestin, which are essential triggers for ovulation in all vertebrate species. Most of these metalloproteases also express broadly in various tissues and cells including germ cells and somatic gonad cells. Thus, metalloproteases likely play roles in gonad formation processes comprising primordial germ cell (PGC) migration, development of germ and somatic cells, and sex determination. However, our knowledge on the functions and mechanisms of metalloproteases in these processes in vertebrates is still lacking. This review will summarize our current knowledge on the metalloproteases in ovulation and gonad formation with emphasis on PGC migration and germ cell development.
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Affiliation(s)
- Yong Zhu
- Department of Biology, East Carolina University, Greenville, NC 27858, USA.
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Zhang Y, Tian Z, Gerard D, Yao L, Shofer FS, Cs-Szabo G, Qin L, Pacifici M, Enomoto-Iwamoto M. Elevated inflammatory gene expression in intervertebral disc tissues in mice with ADAM8 inactivated. Sci Rep 2021; 11:1804. [PMID: 33469101 PMCID: PMC7815795 DOI: 10.1038/s41598-021-81495-y] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2020] [Accepted: 12/31/2020] [Indexed: 12/24/2022] Open
Abstract
We found ADAM8 enzymatic activity elevated in degenerative human intervertebral disc (IVD). Here, we examined the discs in ADAM8-inactivation mice that carry a mutation preventing self-activation of the enzyme. Surprisingly, elevated gene expression for inflammatory markers (Cxcl1, IL6) was observed in injured discs of ADAM8 mutant mice, along with elevated expression of type 2 collagen gene (Col2a1), compared with wild type controls. Injured annulus fibrosus of mutant and wild type mice contained a higher proportion of large collagen fibers compared with intact discs, as documented by microscopic examination under circular polarized light. In the intact IVDs, Adam8EQ mouse AF contained lower proportion of yellow (intermediate) fiber than WT mice. This suggests that ADAM8 may regulate inflammation and collagen fiber assembly. The seemingly contradictory findings of elevated inflammatory markers in mutant mice and excessive ADAM8 activity in human degenerative discs suggest that ADAM8 may interact with other enzymatic and pro-inflammatory processes needed for tissue maintenance and repair. As a future therapeutic intervention to retard intervertebral disc degeneration, partial inhibition of ADAM8 proteolysis may be more desirable than complete inactivation of this enzyme.
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Affiliation(s)
- Yejia Zhang
- Department of Physical Medicine & Rehabilitation, Perelman School of Medicine, University of Pennsylvania, Philadelphia, USA.
- Department of Orthopedic Surgery, Perelman School of Medicine, University of Pennsylvania, Philadelphia, USA.
- Translational Musculoskeletal Research Center (TMRC), Corporal Michael J. Crescenz Veterans Affairs Medical Center, Philadelphia, PA, USA.
| | - Zuozhen Tian
- Department of Physical Medicine & Rehabilitation, Perelman School of Medicine, University of Pennsylvania, Philadelphia, USA
| | - David Gerard
- Department of Biochemistry, Rush University Medical Center, Chicago, IL, USA
| | - Lutian Yao
- Department of Orthopedic Surgery, Perelman School of Medicine, University of Pennsylvania, Philadelphia, USA
- Department of Orthopaedics/Sports Medicine and Joint Surgery, First Affiliated Hospital, China Medical University, Shenyang, Liaoning, China
| | - Frances S Shofer
- Emergency Medicine, Perelman School of Medicine, University of Pennsylvania, Philadelphia, USA
| | - Gabriella Cs-Szabo
- Department of Biochemistry, Rush University Medical Center, Chicago, IL, USA
| | - Ling Qin
- Department of Orthopedic Surgery, Perelman School of Medicine, University of Pennsylvania, Philadelphia, USA
| | - Maurizio Pacifici
- Division of Orthopaedic Surgery, The Children's Hospital of Philadelphia, Philadelphia, USA
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Tian Z, Shofer FS, Yao L, Sun H, Zhang H, Qin L, Chen YH, Zhang Y. TNFAIP8 family gene expressions in the mouse tail intervertebral disc injury model. JOR Spine 2020; 3:e1093. [PMID: 32613168 PMCID: PMC7323467 DOI: 10.1002/jsp2.1093] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/13/2020] [Revised: 04/25/2020] [Accepted: 05/08/2020] [Indexed: 12/15/2022] Open
Abstract
INTRODUCTION The TNF-α-induced protein-8 (TNFAIP8, also known as TIPE) family of molecules comprises four members: TNFAIP8 and TIPEs1-3. Since the first description of these proteins, their roles in fine-tuning inflammation and in directing leukocyte migration have been described in several organ systems. However, their relationship with intervertebral disc (IVD) is unknown. MATERIALS AND METHODS Here, we describe the expression of TNFAIP8 family genes in the nucleus pulposus (NP) and annulus fibrosus (AF) of the normal adult murine IVD. We further describe the expression of these genes in the injured male and female murine IVD. RESULTS Tnfaip8 gene expression was decreased, and Tipe1 gene expression was essentially unchanged, in response to injury. Tipe2 and Tipe3 gene expression was markedly elevated in response to IVD injury, along with those encoding known inflammatory markers (ie, Tnfa, Il6, Cxcl1, and Adam8). Additionally, sex-related differences were also observed for some of these genes in intact and injured mouse IVDs. Future studies include examining tissue distribution of TNFAIP8 family proteins and identifying cells that produce them. In addition, examining mice that are deficient in TNFAIP8 molecules, in relation to gene expression, tissue morphology and mouse behavior, may further delineate the roles of these molecules in IVD inflammation and degeneration.
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Affiliation(s)
- Zuozhen Tian
- Department of Physical Medicine & RehabilitationUniversity of PennsylvaniaPhiladelphiaPennsylvaniaUSA
| | - Frances S. Shofer
- Department of Emergency MedicineUniversity of PennsylvaniaPhiladelphiaPennsylvaniaUSA
| | - Lutian Yao
- Department of Orthopaedic SurgeryUniversity of PennsylvaniaPhiladelphiaPennsylvaniaUSA
- Department of Orthopaedics/Sports Medicine and Joint Surgery, First Affiliated HospitalChina Medical UniversityShenyangLiaoningChina
| | - Honghong Sun
- Pathology and Laboratory Medicine, Perelman School of MedicineUniversity of PennsylvaniaPhiladelphiaPennsylvaniaUSA
| | - Hongtao Zhang
- Pathology and Laboratory Medicine, Perelman School of MedicineUniversity of PennsylvaniaPhiladelphiaPennsylvaniaUSA
| | - Ling Qin
- Department of Emergency MedicineUniversity of PennsylvaniaPhiladelphiaPennsylvaniaUSA
| | - Youhai H. Chen
- Pathology and Laboratory Medicine, Perelman School of MedicineUniversity of PennsylvaniaPhiladelphiaPennsylvaniaUSA
| | - Yejia Zhang
- Department of Physical Medicine & RehabilitationUniversity of PennsylvaniaPhiladelphiaPennsylvaniaUSA
- Department of Orthopaedic SurgeryUniversity of PennsylvaniaPhiladelphiaPennsylvaniaUSA
- Translational Musculoskeletal Research Center (TMRC)Corporal Michael J. Crescenz Veterans Affairs Medical CenterPhiladelphiaPennsylvaniaUSA
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Brent JM, Tian Z, Shofer FS, Martin JT, Yao L, Acharte C, Chen YH, Qin L, Enomoto-Iwamoto M, Zhang Y. Influence of Genetic Background and Sex on Gene Expression in the Mouse ( Mus musculus) Tail in a Model of Intervertebral Disc Injury. Comp Med 2020; 70:131-139. [PMID: 32156324 PMCID: PMC7137552 DOI: 10.30802/aalas-cm-19-000034] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2019] [Revised: 05/08/2019] [Accepted: 07/26/2019] [Indexed: 11/05/2022]
Abstract
To facilitate rational experimental design and fulfill the NIH requirement of including sex as a biologic variable, we examined the influences of genetic background and sex on responses to intervertebral disc (IVD) injury in the mouse tail. The goal of this study was to compare gene expression and histologic changes in response to a tail IVD injury (needle puncture) in male and female mice on the DBA and C57BL/6 (B6) backgrounds. We hypothesized that extracellular matrix gene expression in response to IVD injury differs between mice of different genetic backgrounds and sex. Consistent changes were detected in gene expression and histologic features after IVD injury in mice on both genetic backgrounds and sexes. In particular, expression of col1a1 and adam8 was higher in the injured IVD of DBA mice than B6 mice. Conversely, col2a1 expression was higher in B6 mice than DBA mice. Sex-associated differences were significant only in B6 mice, in which col2a1 expression was greater in male mice than in female. Histologic differences in response to injury were not apparent between DBA and B6 mice or between males and females. In conclusion, mouse tail IVD showed sex- and strain-related changes in gene expression and histology after needle puncture. The magnitude of change in gene expression differed with regard to genetic background and, to a lesser degree, sex.
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Affiliation(s)
- Julie M Brent
- University Laboratory Animal Resources, University of Pennsylvania, Philadelphia, Pennsylvania;,
| | - Zuozhen Tian
- Departments of Physical Medicine and Rehabilitation, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania
| | - Frances S Shofer
- Departments of Emergency Medicine, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania
| | - John T Martin
- Departments of Orthopaedic Surgery, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania; Translational Musculoskeletal Research Center, Corporal Michael J Crescenz Veterans Affairs Medical Center, Philadelphia, Pennsylvania
| | - Lutian Yao
- Departments of Orthopaedic Surgery, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania; Department of Orthopaedics-Sports Medicine and Joint Surgery, First Affiliated Hospital, China Medical University, Shenyang, Liaoning, China
| | - Christian Acharte
- Departments of Physical Medicine and Rehabilitation, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania
| | - Youhai H Chen
- Departments of Pathology and Laboratory Medicine, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania
| | - Ling Qin
- Departments of Orthopaedic Surgery, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania
| | - Motomi Enomoto-Iwamoto
- Department of Orthopaedics, University of Maryland School of Medicine, Baltimore, Maryland
| | - Yejia Zhang
- Departments of Physical Medicine and Rehabilitation, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania; Departments of Orthopaedic Surgery, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania; Translational Musculoskeletal Research Center, Corporal Michael J Crescenz Veterans Affairs Medical Center, Philadelphia, Pennsylvania
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Deregulated PSGL-1 Expression in B Cells and Dendritic Cells May Be Implicated in Human Systemic Sclerosis Development. J Invest Dermatol 2018; 138:2123-2132. [PMID: 29689251 DOI: 10.1016/j.jid.2018.04.003] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2017] [Revised: 04/04/2018] [Accepted: 04/05/2018] [Indexed: 01/13/2023]
Abstract
Systemic sclerosis (SSc) is an autoimmune disorder with high morbidity and mortality, is difficult to diagnose early, and has no curative treatment. PSGL-1 is a leukocyte receptor whose deficiency in mice promotes an SSc-like disease. ADAM8, a metalloprotease that cleaves PSGL-1, is implicated in inflammatory processes. Our goal was to evaluate whether PSGL-1 and ADAM8 contribute to the pathogenesis of human SSc. We found that patients with SSc presented increased PSGL-1 expression on monocytes, dendritic cells, and T cells and decreased expression of PSGL-1 on B cells. PSGL-1 on monocytes from SSc patients failed to induce Syk phosphorylation or IL-10 production after interaction with P-selectin. Up to 60% of the IL-10-producing B cells expressed PSGL-1, pointing to a regulatory role for PSGL-1 in B cells, and PSGL-1+ B cells from SSc patients had decreased IL-10 production. ADAM8 expression was increased on antigen-presenting cells and T lymphocytes of SSc patients. Patients treated with calcium antagonists had lower levels of ADAM8 on APCs and T lymphocytes. Multivariate analysis indicated that the high percentage of ADAM8-expressing plasmacytoid dendritic cells discriminated patients from healthy donors. High PSGL-1 expression on dendritic cells was associated with the presence of interstitial lung disease.
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Decreased severity of experimental autoimmune arthritis in peptidylarginine deiminase type 4 knockout mice. BMC Musculoskelet Disord 2016; 17:205. [PMID: 27150598 PMCID: PMC4858923 DOI: 10.1186/s12891-016-1055-2] [Citation(s) in RCA: 44] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/15/2015] [Accepted: 08/10/2015] [Indexed: 02/05/2023] Open
Abstract
Background Peptidylarginine deiminase type 4 (PADI4) has been identified as a susceptibility gene for rheumatoid arthritis (RA) by genome-wide association studies. PADI4 is highly expressed in the bone marrow, macrophages, neutrophils, and monocytes. Peptidyl citrulline is an interesting molecule in RA because it is a target antigen for anti-citrullinated peptide antibodies, and only PADs (translated proteins from PADI genes) can provide peptidyl citrulline via the modification of protein substrates. The aim of this study was to evaluate the importance of the PADI4 gene in the progression of RA. Methods We generated Padi4 knockout (Padi4−/−) DBA1J mice. The Padi4−/− DBA1J and wild-type mice were immunized with bovine type II collagen (CII) to develop collagen-induced arthritis (CIA). The expression of various inflammatory cytokines and Padi genes in immune cells was detected by the real-time TaqMan assay. Cytokine concentrations in sera were measured by enzyme-linked immunosorbent assays. Localization of the PAD4 and PAD2 proteins was indicated by immunohistochemistry. Results We demonstrated that the clinical disease score was significantly decreased in the Padi4−/− mice and Padi4 expression was induced by CII immunization. In the Padi4−/− mice, serum anti-type II collagen (CII) immunoglobulin M (IgM), IgG, and inflammatory cytokine levels were significantly decreased compared with those in the wild-type mice. Padi2 expression was induced in the immune cells of the Padi4−/− mice as a compensation for the defect in Padi4. Conclusions Padi4 affected disease severity in the CIA mice and was involved in the enhancement of the collagen-initiated inflammatory responses. Electronic supplementary material The online version of this article (doi:10.1186/s12891-016-1055-2) contains supplementary material, which is available to authorized users.
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Miller RE, Lu Y, Tortorella MD, Malfait AM. Genetically Engineered Mouse Models Reveal the Importance of Proteases as Osteoarthritis Drug Targets. Curr Rheumatol Rep 2014; 15:350. [PMID: 23926636 DOI: 10.1007/s11926-013-0350-2] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
More than two decades of research has revealed a combination of proteases that determine cartilage degradation in osteoarthritis. These include metalloproteinases, which degrade the major macromolecules in cartilage, aggrecan and type II collagen, serine proteases, and cysteine proteases, for example cathepsin K. This review summarizes the function of proteases in osteoarthritis progression, as revealed by studies of genetically engineered mouse models. A brief overview of the biochemical characteristics and features of several important proteases is provided, with the objective of increasing understanding of their function. Published data reveal at least three enzymes to be major targets for osteoarthritis drug development: ADAMTS-5, MMP-13, and cathepsin K. In surgical models of osteoarthritis, mice lacking these enzymes are protected from cartilage damage and, to varying degrees, from bone changes. In-vivo studies targeting these proteases with selective small-molecule inhibitors have been performed for a variety of animal models. Mouse models will provide opportunities for future tests of the therapeutic effect of protease inhibitors, both on progression of structural damage to the joint and on associated pain.
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Affiliation(s)
- Rachel E Miller
- Department of Medicine, Section of Rheumatology, Rush University Medical Center, 1611 W. Harrison St., Suite 510, Chicago, IL 60612, USA
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Abstract
Proteolytic enzymes belonging to the A Disintegin And Metalloproteinase (ADAM) family are able to cleave transmembrane proteins close to the cell surface, in a process referred to as ectodomain shedding. Substrates for ADAMs include growth factors, cytokines, chemokines and adhesion molecules, and, as such, many ADAM proteins play crucial roles in cell-cell adhesion, extracellular and intracellular signaling, cell differentiation and cell proliferation. In this Review, we summarize the fascinating roles of ADAMs in embryonic and adult tissue development in both vertebrates and invertebrates.
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Affiliation(s)
- Silvio Weber
- Heart Research Centre Göttingen, Universitaetsmedizin Göttingen, Department of Cardiology and Pneumology, Georg-August-University Göttingen, Germany
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Sandford EE, Orr M, Li X, Zhou H, Johnson TJ, Kariyawasam S, Liu P, Nolan LK, Lamont SJ. Strong Concordance Between Transcriptomic Patterns of Spleen and Peripheral Blood Leukocytes in Response to Avian Pathogenic Escherichia coli Infection. Avian Dis 2012; 56:732-6. [DOI: 10.1637/10261-060512-reg.1] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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Hall T, Shieh HS, Day JE, Caspers N, Chrencik JE, Williams JM, Pegg LE, Pauley AM, Moon AF, Krahn JM, Fischer DH, Kiefer JR, Tomasselli AG, Zack MD. Structure of human ADAM-8 catalytic domain complexed with batimastat. Acta Crystallogr Sect F Struct Biol Cryst Commun 2012; 68:616-21. [PMID: 22684055 PMCID: PMC3370895 DOI: 10.1107/s1744309112015618] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2012] [Accepted: 04/10/2012] [Indexed: 11/11/2022]
Abstract
The role of ADAM-8 in cancer and inflammatory diseases such as allergy, arthritis and asthma makes it an attractive target for drug development. Therefore, the catalytic domain of human ADAM-8 was expressed, purified and crystallized in complex with a hydroxamic acid inhibitor, batimastat. The crystal structure of the enzyme-inhibitor complex was refined to 2.1 Å resolution. ADAM-8 has an overall fold similar to those of other ADAM members, including a central five-stranded β-sheet and a catalytic Zn(2+) ion. However, unique differences within the S1' binding loop of ADAM-8 are observed which might be exploited to confer specificity and selectivity to ADAM-8 competitive inhibitors for the treatment of diseases involving this enzyme.
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Affiliation(s)
- Troii Hall
- Pfizer Inc., 700 Chesterfield Parkway West, Chesterfield, MO 63017, USA
| | - Huey-Sheng Shieh
- Pfizer Inc., 700 Chesterfield Parkway West, Chesterfield, MO 63017, USA
| | - Jacqueline E. Day
- Pfizer Inc., 700 Chesterfield Parkway West, Chesterfield, MO 63017, USA
| | - Nicole Caspers
- Pfizer Inc., 700 Chesterfield Parkway West, Chesterfield, MO 63017, USA
| | - Jill E. Chrencik
- Pfizer Inc., 700 Chesterfield Parkway West, Chesterfield, MO 63017, USA
| | | | - Lyle E. Pegg
- Pfizer Inc., 700 Chesterfield Parkway West, Chesterfield, MO 63017, USA
| | - Adele M. Pauley
- Pfizer Inc., 700 Chesterfield Parkway West, Chesterfield, MO 63017, USA
| | - Andrea F. Moon
- Laboratory of Structural Biology, National Institute of Environmental Health Sciences, National Institutes of Health, 111 T. W. Alexander Drive, Building 101/MD F3-09, Research Triangle Park, NC 27709, USA
| | - Joseph M. Krahn
- Laboratory of Structural Biology, National Institute of Environmental Health Sciences, National Institutes of Health, 111 T. W. Alexander Drive, Building 101/MD F3-09, Research Triangle Park, NC 27709, USA
| | - David H. Fischer
- Pfizer Inc., 700 Chesterfield Parkway West, Chesterfield, MO 63017, USA
| | - James R. Kiefer
- Pfizer Inc., 700 Chesterfield Parkway West, Chesterfield, MO 63017, USA
| | | | - Marc D. Zack
- Dow AgroSciences LLC, 9330 Zionsville Road, Indianapolis, IN 46268, USA
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Domínguez-Luis M, Lamana A, Vazquez J, García-Navas R, Mollinedo F, Sánchez-Madrid F, Díaz-González F, Urzainqui A. The metalloprotease ADAM8 is associated with and regulates the function of the adhesion receptor PSGL-1 through ERM proteins. Eur J Immunol 2012; 41:3436-42. [PMID: 22229154 DOI: 10.1002/eji.201141764] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
The P-selectin glycoprotein ligand-1 (PSGL-1) is involved in the initial contact of leukocytes with activated endothelium, and its adhesive function is regulated through its proteolytic processing. We have found that the metalloprotease ADAM8 is both associated with PSGL-1 through the ezrin–radixin–moesin actin-binding proteins and able to cause the proteolytic cleavage of this adhesion receptor. Accordingly, ADAM8 knockdown increases PSGL-1 expression, and functional assays show that ADAM8 is able to reduce leukocyte rolling on P-selectin and hence on activated endothelial cells. We conclude that ADAM8 modulates the expression and function of PSGL-1.
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Affiliation(s)
- Maria Domínguez-Luis
- Servicio de Reumatología, Hospital Universitario de Canarias, La Laguna, Santa Cruz de Tenerife, Spain
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Li Z, Liao Q, Wu Y, Liao M, Hao Y, Zhang S, Song S, Li B, Zhang YD. Upregulation of a disintegrin and metalloprotease 8 influences tumor metastasis and prognosis in patients with osteosarcoma. Pathol Oncol Res 2012; 18:657-61. [PMID: 22215309 DOI: 10.1007/s12253-011-9491-7] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/03/2011] [Accepted: 12/19/2011] [Indexed: 10/14/2022]
Abstract
To investigate the clinicopathological and prognostic value of a disintegrin and metalloprotease 8 (ADAM8) in osteosarcoma. ADAM8 expression in osteosarcoma tissues was examined by immunohistochemistry in 69 patients. ADAM8 was positively expressed in 61 of 69 (88.4%) osteosarcoma specimens with cytoplasmic staining, and also increased in the specimens with recurrence (P = 0.008) and metastasis (P = 0.002). Patients with strong ADAM8 expression had significantly poorer overall survival (OS) and disease-free survival (DFS) (both P < 0.001) when compared with the patients with the weak expression of ADAM8. On multivariate analysis, ADAM8 expression was found to be an independent prognostic factor for both OS (P < 0.001) and DFS (P < 0.001). Our results suggest for the first time that ADAM8 might be applied as a novel marker for the prediction of recurrence and metastasis potency and a significant indicator of poor prognosis for patients with osteosarcoma.
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Affiliation(s)
- Zhehai Li
- National Hepatobiliary and Enteric Surgery Research Center, Xiangya Hospital, Central South University, Xiangya Road 87, Changsha, 410078 Hunan, China
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Hall T, Pegg LE, Pauley AM, Fischer HD, Tomasselli AG, Zack MD. ADAM8 substrate specificity: influence of pH on pre-processing and proteoglycan degradation. Arch Biochem Biophys 2009; 491:106-11. [PMID: 19766586 DOI: 10.1016/j.abb.2009.09.005] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2009] [Revised: 09/09/2009] [Accepted: 09/12/2009] [Indexed: 11/25/2022]
Abstract
A disintegrin and metalloprotease-8 (ADAM8) is thought to play a role in cancer and inflammatory diseases such as allergy, arthritis, and asthma. Despite the implication of ADAM8 in these diseases, the functional role of ADAM8 catalytic activity remains unclear. In this report, we demonstrate that an early critical autolytic event, we have termed pre-processing, is accelerated at acidic pH (pH 5.5) while autolytic activation is abrogated under the same conditions. Likewise, we found that pre-processing is hindered and autolytic activation is facilitated in neutral pH conditions, and thus demonstrates a pH-dependent shift in substrate selectivity. This finding is further supported by two peptide substrates corresponding to the pre-processing and C-terminal scissile bonds that were preferentially cleaved at acidic and neutral pH, respectively. Lastly, we found fibronectin cleavage to be attenuated at pH 5.5, while two novel substrates, brevican, and vitronectin, were readily cleaved in neutral or acidic conditions.
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Affiliation(s)
- Troii Hall
- Pfizer Inc., Global Research and Development, St. Louis Laboratories, St. Louis, MO 63017-1732, USA
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