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Huang H, Tang Q, Li S, Qin Y, Zhu G. TGFBI: A novel therapeutic target for cancer. Int Immunopharmacol 2024; 134:112180. [PMID: 38733822 DOI: 10.1016/j.intimp.2024.112180] [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: 02/29/2024] [Revised: 04/26/2024] [Accepted: 04/27/2024] [Indexed: 05/13/2024]
Abstract
TGFBI, an extracellular matrix protein induced by transforming growth factor β, has been found to exhibit aberrant expression in various types of cancer. TGFBI plays a crucial role in tumor cell proliferation, angiogenesis, and apoptosis. It also facilitates invasion and metastasis in various types of cancer, including colon, head and neck squamous, renal, and prostate cancers. TGFBI, a prominent p-EMT marker, strongly correlates with lymph node metastasis. TGFBI demonstrates immunosuppressive effects within the tumor immune microenvironment. Targeted therapy directed at TGFBI shows promise as a potential strategy to combat cancer. Hence, a comprehensive review was conducted to examine the impact of TGFBI on various aspects of tumor biology, including cell proliferation, angiogenesis, invasion, metastasis, apoptosis, and the immune microenvironment. This review also delved into the underlying biochemical mechanisms to enhance our understanding of the research advancements related to TGFBI in the context of tumors.
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Affiliation(s)
- Huimei Huang
- Department of Otolaryngology-Head and Neck Surgery, The Second Xiangya Hospital, Central South University, Changsha, China
| | - Qinglai Tang
- Department of Otolaryngology-Head and Neck Surgery, The Second Xiangya Hospital, Central South University, Changsha, China
| | - Shisheng Li
- Department of Otolaryngology-Head and Neck Surgery, The Second Xiangya Hospital, Central South University, Changsha, China
| | - Yuexiang Qin
- Department of Otolaryngology-Head and Neck Surgery, The Third Xiangya Hospital, Central South University, Changsha, China
| | - Gangcai Zhu
- Department of Otolaryngology-Head and Neck Surgery, The Second Xiangya Hospital, Central South University, Changsha, China.
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2
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Human platelets release TGFBIp in acute myocardial infarction. Heart Vessels 2022; 37:1962-1970. [PMID: 35545686 DOI: 10.1007/s00380-022-02086-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/20/2021] [Accepted: 04/20/2022] [Indexed: 11/04/2022]
Abstract
Transforming growth factor-β-induced protein (TGFBIp) is released from activated platelets and promotes pro-thrombotic complications like pulmonary embolism. The role of TGFBIp in acute coronary syndrome, especially with a focus on platelets, has not been investigated so far. Using ELISA and immunoblotting, we demonstrate platelet TGFBIp release in patients with myocardial infarction (MI). We investigated TGFBIp-induced platelet adhesion and rolling by flow chamber and chemotactic effects of TGFBIp in transwell experiments. Immunochemistry staining of arterial vessels detected TGFBIp and the platelet-specific protein GPVI in the vessel wall.We demonstrate for the first time that platelet TGFBIp release is significantly increased in MI and correlates with the severity of acute coronary syndromes (STEMI, NSTEMI). After activation with TRAP, platelets release TGFBIp and TGFBIp itself activates platelets. Under flow, TGFBIp-mediated platelet rolling and adherence similarly to collagen. TGFBIp significantly increased platelet transmigration and we demonstrate TGFBIp deposits in the wall of human arteries. In this study, we add novel aspects to the role of TGFBIp in acute coronary syndrome by demonstrating that TGFBIp is partially released from platelets during MI and has activating, pro-adhesive and pro-migratory effects on platelets that could contribute to the disease development of coronary vascular inflammation and MI.
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3
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Li Z, Miao Z, Jin G, Li X, Li H, Lv Z, Xu HM. βig-h3 supports gastric cancer cell adhesion, migration and proliferation in peritoneal carcinomatosis. Mol Med Rep 2012; 6:558-64. [PMID: 22710407 DOI: 10.3892/mmr.2012.951] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2012] [Accepted: 06/01/2012] [Indexed: 11/06/2022] Open
Abstract
βig-h3 is an extracellular matrix protein and its expression is highly induced by transforming growth factor (TGF-β). It has also been suggested to play an important role in the growth and invasion of colon and pancreatic cancers. In the present study, we demonstrated that βig-h3 is expressed in mesothelial cells, especially in patients with advanced gastric cancer. The positive rate of βig-h3 was significantly higher in cases with a more invasive and advanced serous-type, with visible peritoneal metastasis, and in peritoneal lavage cytological examination (PLC) (+) and peritoneal lavage fluid CEA mRNA(+) subgroups (p<0.05). Our study also showed that the expression of βig-h3 gradually increased with increasing TGF-β1 concentrations in vitro in a time-dependant manner. In addition, βig-h3 also induced human gastric carcinoma cell line (SGC-7901) cell adhesion in a dose-dependent manner and significantly increased cell migration and proliferation. The results suggest that βig-h3 expression in peritoneal mesothelial cells in gastric cancer patients is a marker of the biological behavior of gastric cancer and plays an important role in the process of peritoneal carcinomatosis.
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Affiliation(s)
- Zhen Li
- Department of General Surgery, Fourth Hospital of China Medical University, Shenyang, Liaoning 110001, PR China
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Mustafa DAM, Dekker LJ, Stingl C, Kremer A, Stoop M, Sillevis Smitt PAE, Kros JM, Luider TM. A proteome comparison between physiological angiogenesis and angiogenesis in glioblastoma. Mol Cell Proteomics 2012; 11:M111.008466. [PMID: 22278369 DOI: 10.1074/mcp.m111.008466] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
The molecular pathways involved in neovascularization of regenerating tissues and tumor angiogenesis resemble each other. However, the regulatory mechanisms of neovascularization under neoplastic circumstances are unbalanced leading to abnormal protein expression patterns resulting in the formation of defective and often abortive tumor vessels. Because gliomas are among the most vascularized tumors, we compared the protein expression profiles of proliferating vessels in glioblastoma with those in tissues in which physiological angiogenesis takes place. By using a combination of laser microdissection and LTQ Orbitrap mass spectrometry comparisons of protein profiles were made. The approach yielded 29 and 12 differentially expressed proteins for glioblastoma and endometrium blood vessels, respectively. The aberrant expression of five proteins, i.e. periostin, tenascin-C, TGF-beta induced protein, integrin alpha-V, and laminin subunit beta-2 were validated by immunohistochemistry. In addition, pathway analysis of the differentially expressed proteins was performed and significant differences in the usage of angiogenic pathways were found. We conclude that there are essential differences in protein expression profiles between tumor and normal physiological angiogenesis.
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Affiliation(s)
- Dana A M Mustafa
- Department of Pathology, Erasmus Medical Center, Rotterdam, The Netherlands
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Shin SH, Kim J, Heo SC, Kwon YW, Kim YM, Kim IS, Lee TG, Kim JH. Proteomic identification of betaig-h3 as a lysophosphatidic acid-induced secreted protein of human mesenchymal stem cells: paracrine activation of A549 lung adenocarcinoma cells by betaig-h3. Mol Cell Proteomics 2011; 11:M111.012385. [PMID: 22159598 DOI: 10.1074/mcp.m111.012385] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
Lysophosphatidic acid (LPA) is enriched in the serum and malignant effusion of cancer patients and plays a key role in tumorigenesis and metastasis. LPA-activated mesenchymal stem cells promote tumorigenic potentials of cancer cells through a paracrine mechanism. LPA-conditioned medium (LPA CM) from human adipose tissue-derived mesenchymal stem cells (hASCs) elicited adhesion and proliferation of A549 human lung adenocarcinoma cells. To identify proteins involved in the LPA-stimulated paracrine functions of hASCs, we analyzed the LPA CM using liquid-chromatography tandem mass spectrometry-based shotgun proteomics. We identified βig-h3, an extracellular matrix protein that is implicated in tumorigenesis and metastasis, as an LPA-induced secreted protein in hASCs. LPA-induced βig-h3 expression was abrogated by pretreating hASCs with the LPA receptor(1/3) inhibitor Ki16425 or small interfering RNA-mediated silencing of endogenous LPA(1). LPA-induced βig-h3 expression was blocked by treating the cells with the Rho kinase inhibitor Y27632, implying that LPA-induced βig-h3 expression is mediated by the LPA(1)- Rho kinase pathway. Immunodepletion or siRNA-mediated silencing of βig-h3 abrogated LPA CM-stimulated adhesion and proliferation of A549 cells, whereas retroviral overexpression of βig-h3 in hASCs potentiated it. Furthermore, recombinant βig-h3 protein stimulated the proliferation and adhesion of A549 human lung adenocarcinoma cells. These results suggest that hASC-derived βig-h3 plays a key role in tumorigenesis by stimulating the adhesion and proliferation of cancer cells and it can be applicable as a biomarker and therapeutic target for lung cancer.
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Affiliation(s)
- Sang Hun Shin
- Medical Research Center for Ischemic Tissue Regeneration and Medical Research Institute, Pusan National University, Yangsan 626-870, Gyeongsangnam-do, Republic of Korea
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Lee SH, Kim EJ, Suk K, Kim IS, Lee WH. TL1A induces the expression of TGF-β-inducible gene h3 (βig-h3) through PKC, PI3K, and ERK in THP-1 cells. Cell Immunol 2010; 266:61-6. [PMID: 20863486 DOI: 10.1016/j.cellimm.2010.08.013] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2010] [Revised: 08/27/2010] [Accepted: 08/27/2010] [Indexed: 10/19/2022]
Abstract
βig-h3, an extracellular matrix protein involved in various biological processes including cellular growth, differentiation, adhesion, migration, and angiogenesis, has been shown to be elevated in various inflammatory processes. Death receptor 3 (DR3), a member of the TNF-receptor superfamily that is expressed on T cells and macrophages, is involved in the regulation of inflammatory processes through interaction with its cognate ligand, TNF-like ligand 1A (TL1A). In order to find out whether the TL1A-induced inflammatory activation of macrophages is associated with the up-regulation of βig-h3 expression, the human acute monocytic leukemia cell line (THP-1) was stimulated with either recombinant human TL1A- or DR3-specific monoclonal antibodies. Stimulation of DR3 up-regulated the intracellular levels as well as the secretion of βig-h3. Utilization of various inhibitors and Western blot analysis revealed that activation of protein kinase C (PKC), extracellular signal-regulated kinase (ERK), phosphoinositide kinase-3 (PI3K), and nuclear factor kappa-light-chain-enhancer of activated B cells (NF-κB) is required for TL1A-induced βig-h3 expression. PKC appears to be the upstream regulator of PI3K since the presence of PKC inhibitor blocked the phosphorylation of AKT without affecting ERK phosphorylation. On the other hand, suppression of either PI3K or ERK activity resulted in the suppression of IκB phosphorylation. These findings indicate that TL1A can regulate the inflammatory processes through modulation of the βig-h3 expression through two separate pathways, one through PKC and PI3K and the other through ERK, which culminates at NF-κB activation.
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Affiliation(s)
- Seung-Hee Lee
- Kyungpook National University, Daegu, Republic of Korea
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Song SM, Shin JW, de Guzman JV, Kim J, Yu HS, Jha BK, Kong HH, Hong Y, Chung DI. Paragonimus westermani: Identification and characterization of the fasciclin I domain-containing protein. Exp Parasitol 2010; 125:76-83. [DOI: 10.1016/j.exppara.2009.12.022] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2009] [Revised: 12/29/2009] [Accepted: 12/30/2009] [Indexed: 11/16/2022]
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Han JH, Ha SW, Lee IK, Kim BW, Kim JG. High glucose-induced apoptosis in bovine retinal pericytes is associated with transforming growth factor beta and betaIG-H3: betaIG-H3 induces apoptosis in retinal pericytes by releasing Arg-Gly-Asp peptides. Clin Exp Ophthalmol 2010; 38:620-8. [PMID: 20584023 DOI: 10.1111/j.1442-9071.2010.02276.x] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
BACKGROUND Transforming growth factor beta (TGF-beta) plays an important role in diabetic retinopathy. betaIG-H3 is a downstream target molecule of TGF-beta that may participate in the pathogenesis of diabetic retinopathy and in particular in the loss of pericytes during early pathological changes. METHODS We observed bovine retinal pericytes apoptosis and the increased expression of TGF-beta and betaIG-H3 induced by high concentrations of glucose in the cell culture media. An anti-TGF-beta antibody was used to block glucose-induced retinal pericytes apoptosis. Retinal pericytes were also transfected with cDNA encodings either wild-type or mutant betaIG-H3 lacking Arg-Gly-Asp (RGD) sequences in order to validate the effects of betaIG-H3 and RGD signalling on retinal pericytes apoptosis. RESULTS A cell death-detecting enzyme-linked immunosorbent assay revealed that 25 mM glucose significantly increased cell death compared with 5.5 mM glucose after 5 or 7 days of exposure (P < 0.01). High glucose significantly increased the TGF-beta levels as compared with 5.5 mM glucose after 5 days, and betaIG-H3 levels after 3, 5 and 7 days of exposure (P < 0.01). TGF-beta increased cell death and betaIG-H3 levels in a dose-dependent manner, with a maximal effect observed at 1 ng/mL. An anti-TGF-beta antibody nearly completely blocked high glucose-induced cell death. Wild-type betaIG-H3-transfected cells showed a significant increase in cell death as compared with mutant betaIG-H3-transfected (Mycb-c) cells, untransfected or mock-transfected cells. CONCLUSION These results suggest that hyperglycaemia-induced expression of TGF-beta and betaIG-H3 contributes to accelerated retinal pericytes apoptosis. betaIG-H3 induces pericytes apoptosis through its RGD motif, which may constitute an important pathogenic mechanism leading to pericytes loss in diabetic retinopathy.
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Affiliation(s)
- Jeung H Han
- Department of Internal Medicine, Kyungpook National University Medical School, Daegu, Korea
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Transforming growth factor-beta-induced protein (TGFBIp/beta ig-h3) activates platelets and promotes thrombogenesis. Blood 2010; 114:5206-15. [PMID: 19738031 DOI: 10.1182/blood-2009-03-212415] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Transforming growth factor-beta-induced protein (TGFBIp)/beta ig-h3 is a 68-kDa extracellular matrix protein that is functionally associated with the adhesion, migration, proliferation, and differentiation of various cells. The presence of TGFBIp in platelets led us to study the role of this protein in the regulation of platelet functions. Upon activation, platelet TGFBIp was released and associated with the platelets. TGFBIp mediates not only the adhesion and spread of platelets but also activates them, resulting in phosphatidylserine exposure, alpha-granule secretion, and increased integrin affinity. The fasciclin 1 domains of TGFBIp are mainly responsible for the activation of platelets. TGFBIp promotes thrombus formation on type I fibrillar collagen under flow conditions in vitro and induces pulmonary embolism in mice. Moreover, transgenic mice, which have approximately a 1.7-fold greater blood TGFBIp concentration, are significantly more susceptible to collagen- and epinephrine-induced pulmonary embolism than wild-type mice. These results suggest that TGFBIp, a human platelet protein, plays important roles in platelet activation and thrombus formation. Our findings will increase our understanding of the novel mechanism of platelet activation, contributing to a better understanding of thrombotic pathways and the development of new antithrombotic therapies.
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Kim HR, Ingham PW. The extracellular matrix protein TGFBI promotes myofibril bundling and muscle fibre growth in the zebrafish embryo. Dev Dyn 2009; 238:56-65. [PMID: 19097068 DOI: 10.1002/dvdy.21812] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023] Open
Abstract
The extracellular matrix protein Tgfbi has been shown to localise to myotendinous junctions in mouse and postulated to interact with the transmembrane protein Integrin alpha7beta1, which, in parallel with the Dystrophin-associated protein complex, is critical for linkage between the extracellular matrix and the cytoskeleton of muscle fibres. Here we use a GFP-tagged form of Tgfbi to analyse its distribution in the developing skeletal muscle of the zebrafish embryos and antisense morpholino oligonucleotides to investigate the function of the endogenous protein. We find that although tagged Tgfbi accumulates at the myosepta, the attachment of muscle fibres to the myosepta is established and maintained normally in morphant embryos; however, the fibres show a marked reduction in their growth and a disruption of their myofibril bundles.
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Affiliation(s)
- H Rosemary Kim
- MRC Centre for Developmental and Biomedical Genetics, University of Sheffield, Sheffield, United Kingdom
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Kim HJ, Kim IS. Transforming growth factor-beta-induced gene product, as a novel ligand of integrin alphaMbeta2, promotes monocytes adhesion, migration and chemotaxis. Int J Biochem Cell Biol 2007; 40:991-1004. [PMID: 18083624 DOI: 10.1016/j.biocel.2007.11.001] [Citation(s) in RCA: 32] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2007] [Revised: 10/06/2007] [Accepted: 11/05/2007] [Indexed: 10/22/2022]
Abstract
Monocyte recruitment from the blood in response to chemoattractant gradients is a key phenomenon in inflammation. Various extracellular matrix proteins, at the site of inflammation, have chemoattractant activity and mediate monocyte adhesion and migration as ligands of integrins. In this report, we demonstrate that transforming growth factor-beta-induced gene product (betaig-h3/TGFBIp), as an extracellular matrix protein, mediates monocytes adhesion under both static and flow conditions mainly through integrin alphaMbeta2. Fasciclin 1 domains of betaig-h3/TGFBIp are responsible for the interaction with integrin alphaMbeta2, not only enhances monocyte migration in both chemotactic and haptotactic manners but also mediates their transendothelial migration and subendothelial matrix invasion. These activities are also mediated through integrin alphaMbeta2. Intraperitoneal injection of betaig-h3/TGFBIp promotes the recruitment of monocytes but not neutrophils. Our results demonstrate that betaig-h3/TGFBIp produced at inflammatory sites is a novel chemoattractant for monocytes and interacts with integrin alphaMbeta2 to serve as a substrate for their migration, suggesting that betaig-h3/TGFBIp plays an important role in inflammation.
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Affiliation(s)
- Ha-Jeong Kim
- Department of Biochemistry and Cell Biology, Cell and Matrix Research Institute, School of Medicine, Kyungpook National University, 101 Dongin-dong Jung-gu, Daegu 700-422, Republic of Korea
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Cha DR, Kim IS, Kang YS, Han SY, Han KH, Shin C, Ji YH, Kim NH. Urinary concentration of transforming growth factor-beta-inducible gene-h3(beta ig-h3) in patients with Type 2 diabetes mellitus. Diabet Med 2005; 22:14-20. [PMID: 15606685 DOI: 10.1111/j.1464-5491.2004.01295.x] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
AIMS The expression of TGF beta-inducible gene h3(beta ig-h3) has been used to assess the biological activity of TGF beta in the kidney. In this study, we investigated whether the urinary concentration of beta ig-h3 is associated with diabetic nephropathy in patients with Type 2 diabetes mellitus. We also evaluated the relationship between the urinary concentration of beta ig-3 and proteinuria and microalbuminuria (AER) in a normal healthy population and in Type 2 diabetes patients. METHODS Four hundred and seventy-nine Type 2 diabetic patients without non-diabetic kidney diseases and 528 healthy control subjects were enrolled. The study subjects were divided into five groups: a non-diabetic healthy control group with normal ACR (n = 443), a non-diabetic healthy control group with microalbuminuria (n = 85), a normoalbuminuric diabetic group (n = 198), a microalbuminuric diabetic group (n = 155) and an overt proteinuria group (n = 126). Urinary levels of beta ig-h3 were measured by enzyme-linked immunosorbent assay. RESULTS (i) Urinary excretion of beta ig-h3 was significantly higher in the diabetic groups than in the controls, even in the normoalbuminuric stage (25.02 +/- 8.84 vs. 18.67 +/- 6.56, P = 0.03). In diabetic patients, urinary beta ig-h3 levels increased significantly as diabetic nephropathy advanced (25.02 +/- 8.84 vs. 34.06 +/- 24.55 vs. 169.63 +/- 57.33, P < 0.001). (ii) Proteinuria was found to be significantly correlated with urinary beta ig-h3 (healthy control; r = 0.137, P = 0.019, diabetic patients; r = 0.604, P < 0.001). ACR was also found to be significantly related with urinary beta ig-h3 in diabetic patients (r = 0.383, P = 0.006). (iii) In diabetic patients, urinary beta ig-h3 was significantly related with systolic and diastolic blood pressure (systolic blood pressure: r = 0.436, P = 0.024; diastolic blood pressure, r = 0.365, P = 0.042), total cholesterol and HbA(1c) (cholesterol: r = 0.169, P = 0.03, HbA(1c); r = 0.387, P = 0.044). Logistic regression analyses showed that urinary beta ig-h3 was associated with a significant increase in the risk of microalbuminuria and proteinuria in diabetic patients. CONCLUSIONS Longitudinal monitoring of urinary beta ig-h3 may improve the likelihood of detecting diabetic nephropathy at an earlier stage and beta ig-h3 could be a sensitive marker of diabetic kidney disease progression.
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Affiliation(s)
- D R Cha
- Department of Internal Medicine, Korea University Hospital, Daegu, Korea
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Ha SW, Kim HJ, Bae JS, Jeong GH, Chung SC, Kim JG, Park SH, Kim YL, Kam S, Kim IS, Kim BW. Elevation of urinary betaig-h3, transforming growth factor-beta-induced protein in patients with type 2 diabetes and nephropathy. Diabetes Res Clin Pract 2004; 65:167-73. [PMID: 15223229 DOI: 10.1016/j.diabres.2004.01.007] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/30/2003] [Revised: 01/16/2004] [Accepted: 01/22/2004] [Indexed: 10/26/2022]
Abstract
Transforming growth factor-beta (TGF-beta) is a pro-sclerotic growth factor implicated in the pathogenesis of diabetic nephropathy. betaig-h3 is an extracellular matrix protein which is induced in many cells by TGF-beta. This study examined urinary betaig-h3 excretion in diabetic patients with elevated urinary albumin excretion and the clinical application of urinary betaig-h3 as a marker of diabetic nephropathy. Urinary and serum betaig-h3 levels were determined by enzyme-linked immunosorbent assay in 163 type 2 diabetic patients and 101 healthy control subjects of comparable age and weight. The ratio of urinary betaig-h3 and TGF-beta to creatinine was analyzed in patients with different degree of nephropathy. The betaig-h3 to creatinine ratio in urine was elevated in all groups of type 2 diabetics with normoalbuminuria (101.6 +/- 9.27), microalbuminuria (120.2 +/- 14.48), and overt proteinuria (146.3 +/- 16.34), when compared with control subjects (64.8 +/- 7.14) (P < 0.01). There was a positive correlation between urinary betaig-h3 and TGF-beta excretion rate and a positive correlation between urinary betaig-h3 and albumin excretion rate (AER). These data show that urinary levels of betaig-h3 are elevated in type 2 diabetic patients with nephropathy and may be used as a marker of diabetic nephropathy.
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Affiliation(s)
- Sung-Woo Ha
- Department of Internal Medicine, School of Medicine, Kyungpook National University, Daegu 700-422, Republic of Korea
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Abstract
This review is focused on the interplay between two major factors affecting the vascular tree in diabetes, insulin resistance, and hyperglycemia. The implications for vascular function, structure, and the interaction between vascular cells and other tissues by which they are affected under these conditions are reviewed.
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Affiliation(s)
- Naftali Stern
- Institute of Endocrinology, Metabolism, and Hypertension, Tel Aviv-Sourasky Medical Center, 6 Weizman Street, Tel Aviv 64239, Israel.
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Nam JO, Kim JE, Jeong HW, Lee SJ, Lee BH, Choi JY, Park RW, Park JY, Kim IS. Identification of the alphavbeta3 integrin-interacting motif of betaig-h3 and its anti-angiogenic effect. J Biol Chem 2003; 278:25902-9. [PMID: 12704192 DOI: 10.1074/jbc.m300358200] [Citation(s) in RCA: 104] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
betaig-h3 is an extracellular matrix protein that mediates adhesion and migration of several cell types through interaction with integrins. In the present study, we tested whether betaig-h3 mediates endothelial cell adhesion and migration, thereby regulating angiogenesis. In this study, we demonstrate that not only betaig-h3 itself but also all four fas-1 domains of betaig-h3 mediate endothelial cell adhesion and migration through interaction with the alphavbeta3 integrin. We found that the alphavbeta3 integrin-interacting motif of the four fas-1 domains of betaig-h3 is the same YH motif that we reported previously to interact with alphavbeta5 integrin. The YH peptide inhibited endothelial cell adhesion and migration in a dose-dependent manner. We demonstrate that the YH peptide has anti-angiogenic activity in vitro and in vivo using an endothelial cell tube formation assay and a Matrigel plug assay, respectively. Our results reveal that betaig-h3 bears alphavbeta3 integrin-interacting motifs that mediate endothelial cell adhesion and migration and, therefore, may regulate angiogenesis.
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Affiliation(s)
- Ju-Ock Nam
- Cell and Matrix Biology National Research Laboratory, Department of Biochemistry, Kyungpook National University School of Medicine, Taegu 700-422, Korea
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