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Sahoo BK, Velavalapalli VM. Assessing Partial Inhibition of Ribonuclease A Activity by Curcumin through Fluorescence Spectroscopy and Theoretical Studies. J Fluoresc 2023:10.1007/s10895-023-03474-y. [PMID: 37870732 DOI: 10.1007/s10895-023-03474-y] [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: 09/09/2023] [Accepted: 10/12/2023] [Indexed: 10/24/2023]
Abstract
Molecular interactions and controlled expression of enzymatic activities are fundamental to all cellular functions in an organism. The active polyphenol in turmeric known as curcumin (CCM) is known to exhibit diverse pharmacological activities. Ribonucleases (RNases) are the hydrolytic enzymes that plays important role in ribonucleic acid (RNA) metabolism. Uncontrolled and unwanted cleavage of RNA by RNases may be the cause of cell death leading to disease states. The protein ribonuclease A (RNase A) in the superfamily of RNases cleaves the RNA besides its role in different diseases like autoimmune diseases, and pancreatic disorders. Interaction of CCM with RNase A have been reported along with the possible role of CCM to inhibit the RNase A enzymatic activity. The interaction strength was found to be 104 M-1 order from spectroscopic results. Quenching of RNase A fluorescence by CCM was 104 M-1 order. Non-radiative energy transfer from RNase A (donor) to CCM (acceptor) suggested a distance of 2.42 nm between the donor-acceptor pair. Circular dichroism studies revealed no structural changes in RNase A after binding. Binding-induced conformational variation in protein was observed from synchronous fluorescence studies. Agarose gel electrophoresis revealed a partial inhibition of the RNase A activity by CCM though not significant. Molecular docking and molecular dynamics studies suggested the residues of RNase A involved in the interaction with supporting the experimental finding for the partial inhibition of the enzyme activity. This study may help in designing new CCM analogues or related structures to understand their differential inhibition of the RNase A activity.
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Affiliation(s)
- Bijaya Ketan Sahoo
- Department of Chemistry, School of Science, GITAM Deemed to be University, Hyderabad, 502329, India.
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Weng C, Dong H, Mao J, Lang X, Chen J. Characterization and Function of the Interaction of Angiogenin With Alpha-Actinin 2. Front Mol Biosci 2022; 9:837971. [PMID: 35463945 PMCID: PMC9033276 DOI: 10.3389/fmolb.2022.837971] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2021] [Accepted: 02/01/2022] [Indexed: 11/16/2022] Open
Abstract
Angiogenin (ANG) is the first human tumor-derived angiogenic protein, which can promote angiogenesis and tumor growth. In a previous study, we identified alpha-actinin 2 (ACTN2), a cytoskeletal protein, as a direct interacting protein with angiogenin. However, the interaction between ANG and ACTN2 was not characterized in detail, which may provide information on the molecular mechanisms of ANG functions. In this study, we mapped the accurate binding domain and sites in ANG and ACTN2, respectively. In ANG, the residues from 83 to 105 are the smallest motif that can bind to ACTN2. We then use site mutation analysis to identify the precise binding sites of ANG in the interaction and found that the 101st residue arginine (R101) represents the critical residue involved in the ANG–ACTN2 interaction. In ACTN2, the residues from 383 to 632, containing two spectrin domains in the middle of the rod structure of ACTN2, play an important role in the interaction. Furthermore, we validated the interaction of ACTN2-383–632 to ANG by glutathione-S-transferase (GST) pull-down assay. In functional analysis, overexpressed ACTN2-383–632 could impair tumor cell motility observably, including cell migration and invasion. Meanwhile, ACTN2-383–632 overexpression inhibited tumor cell proliferation and survival as well. These data suggest that an excess expression of ACTN2 segment ACTN2-383–632 can inhibit tumor cell motility and proliferation by interfering with the interaction between ANG and ACTN2, which provides a potential mechanism of ANG action in tumor growth and metastasis.
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Affiliation(s)
- Chunhua Weng
- Kidney Disease Center, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China
- Key Laboratoryof Kidney Disease Prevention and Control Technology, Hangzhou, China
- National Key Clinical Department of Kidney Diseases, Hangzhou, China
- Institute of Nephrology, Zhejiang University, Hangzhou, China
- Zhejiang Clinical Research Center of Kidney and Urinary System Disease, Hangzhou, China
- *Correspondence: Chunhua Weng, ; Jianghua Chen,
| | - Haojie Dong
- Department of Hematological Malignancies Translational Science, Beckman Research Institute, City of Hope Medical Center, Duarte, CA, United States
| | - Jiajia Mao
- Kidney Disease Center, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China
- Key Laboratoryof Kidney Disease Prevention and Control Technology, Hangzhou, China
- National Key Clinical Department of Kidney Diseases, Hangzhou, China
- Institute of Nephrology, Zhejiang University, Hangzhou, China
- Zhejiang Clinical Research Center of Kidney and Urinary System Disease, Hangzhou, China
| | - Xiabing Lang
- Kidney Disease Center, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China
- Key Laboratoryof Kidney Disease Prevention and Control Technology, Hangzhou, China
- National Key Clinical Department of Kidney Diseases, Hangzhou, China
- Institute of Nephrology, Zhejiang University, Hangzhou, China
- Zhejiang Clinical Research Center of Kidney and Urinary System Disease, Hangzhou, China
| | - Jianghua Chen
- Kidney Disease Center, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China
- Key Laboratoryof Kidney Disease Prevention and Control Technology, Hangzhou, China
- National Key Clinical Department of Kidney Diseases, Hangzhou, China
- Institute of Nephrology, Zhejiang University, Hangzhou, China
- Zhejiang Clinical Research Center of Kidney and Urinary System Disease, Hangzhou, China
- *Correspondence: Chunhua Weng, ; Jianghua Chen,
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Zhang J, Jiang C, Ruan L, Huang X. Associations of cytokine concentrations in aqueous humour with retinal vascular abnormalities and exudation in Coats' disease. Acta Ophthalmol 2019; 97:319-324. [PMID: 30414256 DOI: 10.1111/aos.13971] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2018] [Accepted: 10/11/2018] [Indexed: 01/15/2023]
Abstract
PURPOSE To investigate the associations of cytokine concentrations in aqueous humour with the severity of retinal vascular abnormalities, exudation and fibrosis in patients with Coats' disease. METHODS Aqueous humour samples were collected in 23 paediatric patients (23 eyes) with Coats' disease and six age-matched control patients (six eyes) with congenital cataract in this cross-sectional, case-control study. Through Cytometric Bead Array technology, six angiogenic, inflammatory and fibrotic cytokines were measured for their concentrations in aqueous humour. Ophthalmologic characteristics including retinal vessel abnormalities, exudation and fibrosis of Coats' disease were also clinically evaluated for analysis. RESULTS The aqueous levels of vascular endothelial growth factor (VEGF) (p = 0.006) and monocyte chemoattractant protein-1 (MCP-1) (p < 0.001) were significantly higher in the Coats' disease group than in the control group. The concentrations of angiogenin were peaked in eyes with first-grade vessels tortuosity (p < 0.001), and also positively correlated with the severity of retinal capillary abnormalities (r = 0.910, p < 0.001). The concentrations of MCP-1 (r = 0.966, p < 0.001) and VEGF (r = 0. 765, p = 0.002) were significantly correlated with the extent of retinal exudation. The aqueous humour transforming growth factor-β (TGFβ) concentrations were higher in eyes with retinal fibrosis than in non-fibrotic eyes with Coats' disease (p = 0.004). CONCLUSION In Coats' disease, angiogenin may act as a potential biomarker for retinal vascular abnormalities. The concentrations of VEGF and MCP-1 may positively correlate with the severity of retinal exudation.
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Affiliation(s)
- Juan Zhang
- Department of Ophthalmology at Eye and ENT Hospital Shanghai Medical College Fudan University Shanghai China
- Shanghai Key Laboratory of Visual Impairment and Restoration Fudan University Shanghai China
| | - Chen Jiang
- Department of Ophthalmology at Eye and ENT Hospital Shanghai Medical College Fudan University Shanghai China
- Shanghai Key Laboratory of Visual Impairment and Restoration Fudan University Shanghai China
| | - Lu Ruan
- Department of Ophthalmology at Eye and ENT Hospital Shanghai Medical College Fudan University Shanghai China
| | - Xin Huang
- Department of Ophthalmology at Eye and ENT Hospital Shanghai Medical College Fudan University Shanghai China
- Shanghai Key Laboratory of Visual Impairment and Restoration Fudan University Shanghai China
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Park S, Choi Y, Jung N, Kim J, Oh S, Yu Y, Ahn JH, Jo I, Choi BO, Jung SC. Autophagy induction in the skeletal myogenic differentiation of human tonsil-derived mesenchymal stem cells. Int J Mol Med 2017; 39:831-840. [PMID: 28259927 PMCID: PMC5360438 DOI: 10.3892/ijmm.2017.2898] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2016] [Accepted: 02/14/2017] [Indexed: 12/25/2022] Open
Abstract
Mesenchymal stem cells (MSCs) are capable of self-renewal and differentiation and are thus a valuable source for the replacement of diseased or damaged organs. Previously, we reported that the tonsils can be an excellent reservoir of MSCs for the regeneration of skeletal muscle (SKM) damage. However, the mechanisms involved in the differentiation from tonsil-derived MSCs (T-MSCs) to myocytes via myoblasts remain unclear. To clarify these mechanisms, we analyzed gene expression profiles of T-MSCs during differentiation into myocytes compared with human skeletal muscle cells (hSKMCs). Total RNA was extracted from T-MSCs, T-MSC-derived myoblasts and myocytes, and hSKMCs and was subjected to analysis using a microarray. Microarray analysis of the three phases of myogenic differentiation identified candidate genes associated with myogenic differentiation. The expression pattern of undifferentiated T-MSCs was distinguishable from the myogenic differentiated T-MSCs and hSKMCs. In particular, we selected FNBP1L, which among the upregulated genes is essential for antibacterial autophagy, since autophagy is related to SKM metabolism and myogenesis. T-MSCs differentiated toward myoblasts and skeletal myocytes sequentially, as evidenced by increased expression of autophagy-related markers (including Beclin-1, LC3B and Atg5) and decreased expression of Bcl-2. Furthermore, we reconfirmed that autophagy has an effect on the mechanism of skeletal myogenic differentiation derived from T-MSCs by treatment with 5-azacytidine and bafilomycin A1. These data suggest that the transcriptome of the T-MSC-derived myocytes is similar to that of hSKMCs, and that autophagy has an important role in the mechanism of myogenic differentiation of T-MSCs.
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Affiliation(s)
- Saeyoung Park
- Department of Biochemistry, School of Medicine, Ewha Womans University, Seoul 07985, Republic of Korea
| | - Yoonyoung Choi
- Department of Biochemistry, School of Medicine, Ewha Womans University, Seoul 07985, Republic of Korea
| | - Namhee Jung
- Department of Biochemistry, School of Medicine, Ewha Womans University, Seoul 07985, Republic of Korea
| | - Jieun Kim
- Department of Biochemistry, School of Medicine, Ewha Womans University, Seoul 07985, Republic of Korea
| | - Seiyoon Oh
- Department of Human Biology, College of Human Ecology, Cornell University, Ithaca, NY 14850, USA
| | - Yeonsil Yu
- Department of Molecular Medicine, School of Medicine, Ewha Womans University, Seoul 07985, Republic of Korea
| | - Jung-Hyuck Ahn
- Department of Biochemistry, School of Medicine, Ewha Womans University, Seoul 07985, Republic of Korea
| | - Inho Jo
- Department of Molecular Medicine, School of Medicine, Ewha Womans University, Seoul 07985, Republic of Korea
| | - Byung-Ok Choi
- Department of Neurology, Samsung Medical Center, Sungkyunkwan University, Seoul 06351, Republic of Korea
| | - Sung-Chul Jung
- Department of Biochemistry, School of Medicine, Ewha Womans University, Seoul 07985, Republic of Korea
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Magrì A, Munzone A, Peana M, Medici S, Zoroddu MA, Hansson O, Satriano C, Rizzarelli E, La Mendola D. Coordination Environment of Cu(II) Ions Bound to N-Terminal Peptide Fragments of Angiogenin Protein. Int J Mol Sci 2016; 17:ijms17081240. [PMID: 27490533 PMCID: PMC5000638 DOI: 10.3390/ijms17081240] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2016] [Revised: 07/21/2016] [Accepted: 07/22/2016] [Indexed: 12/11/2022] Open
Abstract
Angiogenin (Ang) is a potent angiogenic factor, strongly overexpressed in patients affected by different types of cancers. The specific Ang cellular receptors have not been identified, but it is known that Ang-actin interaction induces changes both in the cell cytoskeleton and in the extracellular matrix. Most in vitro studies use the recombinant form (r-Ang) instead of the form that is normally present in vivo ("wild-type", wt-Ang). The first residue of r-Ang is a methionine, with a free amino group, whereas wt-Ang has a glutamic acid, whose amino group spontaneously cyclizes in the pyro-glutamate form. The Ang biological activity is influenced by copper ions. To elucidate the role of such a free amino group on the protein-copper binding, we scrutinized the copper(II) complexes with the peptide fragments Ang(1-17) and AcAng(1-17), which encompass the sequence 1-17 of angiogenin (QDNSRYTHFLTQHYDAK-NH₂), with free amino and acetylated N-terminus, respectively. Potentiometric, ultraviolet-visible (UV-vis), nuclear magnetic resonance (NMR) and circular dichroism (CD) studies demonstrate that the two peptides show a different metal coordination environment. Confocal microscopy imaging of neuroblastoma cells with the actin staining supports the spectroscopic results, with the finding of different responses in the cytoskeleton organization upon the interaction, in the presence or not of copper ions, with the free amino and the acetylated N-terminus peptides.
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Affiliation(s)
- Antonio Magrì
- Institute of Biostructures and Bioimages, National Council of Research ( CNR), Via P. Gaifami 18, 95126 Catania, Italy.
| | - Alessia Munzone
- Department of Chemical Sciences, University of Catania, Viale A. Doria 6, 95125 Catania, Italy.
| | - Massimiliano Peana
- Department of Chemistry and Pharmacy, University of Sassari, Via Vienna 2, 07100 Sassari, Italy.
| | - Serenella Medici
- Department of Chemistry and Pharmacy, University of Sassari, Via Vienna 2, 07100 Sassari, Italy.
| | - Maria Antonietta Zoroddu
- Department of Chemistry and Pharmacy, University of Sassari, Via Vienna 2, 07100 Sassari, Italy.
| | - Orjan Hansson
- Department of Chemistry and Molecular Biology, University of Gothenburg, Medicinaregatan 9C, 41390 Göteborg, Sweden.
| | - Cristina Satriano
- Department of Chemical Sciences, University of Catania, Viale A. Doria 6, 95125 Catania, Italy.
| | - Enrico Rizzarelli
- Institute of Biostructures and Bioimages, National Council of Research ( CNR), Via P. Gaifami 18, 95126 Catania, Italy.
- Department of Chemical Sciences, University of Catania, Viale A. Doria 6, 95125 Catania, Italy.
| | - Diego La Mendola
- Department of Pharmacy, University of Pisa, Via Bonanno Pisano 6, 56126 Pisa, Italy.
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Sheng J, Xu Z. Three decades of research on angiogenin: a review and perspective. Acta Biochim Biophys Sin (Shanghai) 2016; 48:399-410. [PMID: 26705141 DOI: 10.1093/abbs/gmv131] [Citation(s) in RCA: 159] [Impact Index Per Article: 19.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2015] [Accepted: 11/23/2015] [Indexed: 01/17/2023] Open
Abstract
As a member of the vertebrate-specific secreted ribonucleases, angiogenin (ANG) was first isolated and identified solely by its ability to induce new blood vessel formation, and now, it has been recognized to play important roles in various physiological and pathological processes through regulating cell proliferation, survival, migration, invasion, and/or differentiation. ANG exhibits very weak ribonucleolytic activity that is critical for its biological functions, and exerts its functions through activating different signaling transduction pathways in different target cells. A series of recent studies have indicated that ANG contributes to cellular nucleic acid metabolism. Here, we comprehensively review the results of studies regarding the structure, mechanism, and function of ANG over the past three decades. Moreover, current problems and future research directions of ANG are discussed. The understanding of the function and mechanism of ANG in a wide context will help to better delineate its roles in diseases, especially in cancer and neurodegenerative diseases.
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Affiliation(s)
- Jinghao Sheng
- Institute of Environmental Health, Zhejiang University School of Public Health, Hangzhou 310058, China Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, Zhejiang University, Hangzhou 310003, China Program in Molecular Cell Biology, Zhejiang University School of Medicine, Hangzhou 310058, China
| | - Zhengping Xu
- Institute of Environmental Health, Zhejiang University School of Public Health, Hangzhou 310058, China Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, Zhejiang University, Hangzhou 310003, China Program in Molecular Cell Biology, Zhejiang University School of Medicine, Hangzhou 310058, China
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Gao X, Dong H, Lin C, Sheng J, Zhang F, Su J, Xu Z. Reduction of AUF1-mediated follistatin mRNA decay during glucose starvation protects cells from apoptosis. Nucleic Acids Res 2014; 42:10720-30. [PMID: 25159612 PMCID: PMC4176339 DOI: 10.1093/nar/gku778] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023] Open
Abstract
Follistatin (FST) performs several vital functions in the cells, including protection from apoptosis during stress. The expression of FST is up-regulated in response to glucose deprivation by an unknown mechanism. We herein showed that the induction of FST by glucose deprivation was due to an increase in the half-life of its mRNA. We further identified an AU-rich element (ARE) in the 3′UTR of FST mRNA that mediated its decay. The expression of FST was elevated after knocking down AUF1 and reduced when AUF1 was further expressed. In vitro binding assays and RNA pull-down assays revealed that AUF1 interacted with FST mRNA directly via its ARE. During glucose deprivation, a majority of AUF1 shuttled from cytoplasm to nucleus, resulting in dissociation of AUF1 from FST mRNA and thus stabilization of FST mRNA. Finally, knockdown of AUF1 decreased whereas overexpression of AUF1 increased glucose deprivation-induced apoptosis. The apoptosis promoting effect of AUF1 was eliminated in FST expressing cells. Collectively, this study provided evidence that AUF1 is a negative regulator of FST expression and participates in the regulation of cell survival under glucose deprivation.
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Affiliation(s)
- Xiangwei Gao
- Institute of Environmental Medicine, Zhejiang University School of Medicine, 866 Yuhangtang Road, Hangzhou 310058, China Program in Molecular Cell Biology, Zhejiang University School of Medicine, 866 Yuhangtang Road, Hangzhou 310058, China
| | - Haojie Dong
- Institute of Environmental Medicine, Zhejiang University School of Medicine, 866 Yuhangtang Road, Hangzhou 310058, China Program in Molecular Cell Biology, Zhejiang University School of Medicine, 866 Yuhangtang Road, Hangzhou 310058, China
| | - Chen Lin
- Institute of Environmental Medicine, Zhejiang University School of Medicine, 866 Yuhangtang Road, Hangzhou 310058, China Program in Molecular Cell Biology, Zhejiang University School of Medicine, 866 Yuhangtang Road, Hangzhou 310058, China
| | - Jinghao Sheng
- Institute of Environmental Medicine, Zhejiang University School of Medicine, 866 Yuhangtang Road, Hangzhou 310058, China Program in Molecular Cell Biology, Zhejiang University School of Medicine, 866 Yuhangtang Road, Hangzhou 310058, China
| | - Fan Zhang
- Institute of Environmental Medicine, Zhejiang University School of Medicine, 866 Yuhangtang Road, Hangzhou 310058, China
| | - Jinfeng Su
- Institute of Environmental Medicine, Zhejiang University School of Medicine, 866 Yuhangtang Road, Hangzhou 310058, China
| | - Zhengping Xu
- Institute of Environmental Medicine, Zhejiang University School of Medicine, 866 Yuhangtang Road, Hangzhou 310058, China Program in Molecular Cell Biology, Zhejiang University School of Medicine, 866 Yuhangtang Road, Hangzhou 310058, China
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Zhu B, Xu T, Yuan J, Guo X, Liu D. Transcriptome sequencing reveals differences between primary and secondary hair follicle-derived dermal papilla cells of the Cashmere goat (Capra hircus). PLoS One 2013; 8:e76282. [PMID: 24069460 PMCID: PMC3777969 DOI: 10.1371/journal.pone.0076282] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2013] [Accepted: 08/22/2013] [Indexed: 12/30/2022] Open
Abstract
The dermal papilla is thought to establish the character and control the size of hair follicles. Inner Mongolia Cashmere goats (Capra hircus) have a double coat comprising the primary and secondary hair follicles, which have dramatically different sizes and textures. The Cashmere goat is rapidly becoming a potent model for hair follicle morphogenesis research. In this study, we established two dermal papilla cell lines during the anagen phase of the hair growth cycle from the primary and secondary hair follicles and clarified the similarities and differences in their morphology and growth characteristics. High-throughput transcriptome sequencing was used to identify gene expression differences between the two dermal papilla cell lines. Many of the differentially expressed genes are involved in vascularization, ECM-receptor interaction and Wnt/β-catenin/Lef1 signaling pathways, which intimately associated with hair follicle morphogenesis. These findings provide valuable information for research on postnatal morphogenesis of hair follicles.
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Affiliation(s)
- Bing Zhu
- The Key Laboratory of Mammalian Reproductive Biology and Biotechnology of the Ministry of Education, Inner Mongolia University, Hohhot, China
| | - Teng Xu
- The Key Laboratory of Mammalian Reproductive Biology and Biotechnology of the Ministry of Education, Inner Mongolia University, Hohhot, China
| | - Jianlong Yuan
- The Key Laboratory of Mammalian Reproductive Biology and Biotechnology of the Ministry of Education, Inner Mongolia University, Hohhot, China
| | - Xudong Guo
- The Key Laboratory of Mammalian Reproductive Biology and Biotechnology of the Ministry of Education, Inner Mongolia University, Hohhot, China
- * E-mail: (XG); (DL)
| | - Dongjun Liu
- The Key Laboratory of Mammalian Reproductive Biology and Biotechnology of the Ministry of Education, Inner Mongolia University, Hohhot, China
- * E-mail: (XG); (DL)
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Xia W, Fu W, Cai L, Kong H, Cai X, Liu J, Wang Y, Zou M, Xu D. Identification and characterization of FHL3 as a novel angiogenin-binding partner. Gene 2012; 504:233-7. [PMID: 22633874 DOI: 10.1016/j.gene.2012.05.019] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2012] [Revised: 05/02/2012] [Accepted: 05/10/2012] [Indexed: 12/14/2022]
Abstract
Angiogenin (Ang) is known to induce cell proliferation and inhibit apoptosis by cellular signaling pathways and by direct nuclear functions of Ang, but the mechanism of action for Ang is not yet clear. The aim of present study was to identify novel binding partner of Ang and to explore the underlying mechanism. With the use of yeast two-hybrid screening system, Ang was used as the bait to screen human fetal hepatic cDNA library for interacting proteins. Four and a half LIM domains 3 (FHL3) was identified as a novel Ang binding partner. The interaction between Ang and the full length FHL3 was further confirmed by yeast two-hybrid assay, co-immunoprecipitation and GST pull-down assays. Furthermore, FHL3 was required for Ang-mediated HeLa cell proliferation and nuclear translocation of Ang. These findings suggest that the interaction between Ang and FHL3 may provide some clues to the mechanisms of Ang-regulated cell growth and apoptosis.
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Affiliation(s)
- Wenrong Xia
- Laboratory of Genome Engineering, Beijing Institute of Basic Medical Sciences, Beijing, China
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Pyatibratov MG, Kostyukova AS. New insights into the role of angiogenin in actin polymerization. INTERNATIONAL REVIEW OF CELL AND MOLECULAR BIOLOGY 2012; 295:175-98. [PMID: 22449490 DOI: 10.1016/b978-0-12-394306-4.00011-3] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Angiogenin is a potent stimulator of angiogenesis. It interacts with endothelial cells and induces a wide range of cellular responses initiating a process of blood vessel formation. One important target of angiogenin is endothelial cell-surface actin, and their interaction might be one of crucial steps in angiogenin-induced neovascularization. Recently, it was shown that angiogenin inhibits polymerization of G-actin and changes the physical properties of F-actin. These observations suggest that angiogenin may cause changes in the cell cytoskeleton. This chapter reviews the current state of the literature regarding angiogenin structure and function and discusses the relationship between the angiogenin and actin and possible functional roles of their interaction.
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Affiliation(s)
- Mikhail G Pyatibratov
- Institute of Protein Research, Russian Academy of Sciences, Pushchino, Moscow Region, Russia
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Angiogenin enhances cell migration by regulating stress fiber assembly and focal adhesion dynamics. PLoS One 2011; 6:e28797. [PMID: 22194915 PMCID: PMC3237552 DOI: 10.1371/journal.pone.0028797] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2011] [Accepted: 11/15/2011] [Indexed: 11/19/2022] Open
Abstract
Angiogenin (ANG) acts on both vascular endothelial cells and cancer cells, but the underlying mechanism remains elusive. In this study, we carried out a co-immunoprecipitation assay in HeLa cells and identified 14 potential ANG-interacting proteins. Among these proteins, β-actin, α-actinin 4, and non-muscle myosin heavy chain 9 are stress fiber components and involved in cytoskeleton organization and movement, which prompted us to investigate the mechanism of action of ANG in cell migration. Upon confirmation of the interactions between ANG and the three proteins, further studies revealed that ANG co-localized with β-actin and α-actinin 4 at the leading edge of migrating cells. Down-regulation of ANG resulted in fewer but thicker stress fibers with less dynamics, which was associated with the enlargements of focal adhesions. The focal adhesion kinase activity and cell migration capacity were significantly decreased in ANG-deficient cells. Taken together, our data demonstrated that the existence of ANG in the cytoplasm optimizes stress fiber assembly and focal adhesion formation to accommodate cell migration. The finding that ANG promoted cancer cell migration might provide new clues for tumor metastasis research.
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12
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Gao X, Wei S, Lai K, Sheng J, Su J, Zhu J, Dong H, Hu H, Xu Z. Nucleolar follistatin promotes cancer cell survival under glucose-deprived conditions through inhibiting cellular rRNA synthesis. J Biol Chem 2010; 285:36857-64. [PMID: 20843798 DOI: 10.1074/jbc.m110.144477] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
Solid tumor development is frequently accompanied by energy-deficient conditions such as glucose deprivation and hypoxia. Follistatin (FST), a secretory protein originally identified from ovarian follicular fluid, has been suggested to be involved in tumor development. However, whether it plays a role in cancer cell survival under energy-deprived conditions remains elusive. In this study, we demonstrated that glucose deprivation markedly enhanced the expression and nucleolar localization of FST in HeLa cells. The nucleolar localization of FST relied on its nuclear localization signal (NLS) comprising the residues 64-87. Localization of FST to the nucleolus attenuated rRNA synthesis, a key process for cellular energy homeostasis and cell survival. Overexpression of FST delayed glucose deprivation-induced apoptosis, whereas down-regulation of FST exerted the opposite effect. These functions depended on the presence of an intact NLS because the NLS-deleted mutant of FST lost the rRNA inhibition effect and the cell protective effect. Altogether, we identified a novel nucleolar function of FST, which is of importance in the modulation of cancer cell survival in response to glucose deprivation.
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Affiliation(s)
- Xiangwei Gao
- Institute of Environmental Medicine, Zhejiang University School of Medicine, Hangzhou 310058, China
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13
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Binding of human angiogenin inhibits actin polymerization. Arch Biochem Biophys 2010; 495:74-81. [PMID: 20045391 DOI: 10.1016/j.abb.2009.12.024] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2009] [Revised: 12/25/2009] [Accepted: 12/29/2009] [Indexed: 11/22/2022]
Abstract
Angiogenin is a potent inducer of angiogenesis, a process of blood vessel formation. It interacts with endothelial and other cells and elicits a wide range of cellular responses including migration, proliferation, and tube formation. One important target of angiogenin is endothelial cell-surface actin and their interaction might be one of essential steps in angiogenin-induced neovascularization. Based on earlier indications that angiogenin promotes actin polymerization, we studied the binding interactions between angiogenin and actin in a wide range of conditions. We showed that at subphysiological KCl concentrations, angiogenin does not promote, but instead inhibits polymerization by sequestering G-actin. At low KCl concentrations angiogenin induces formation of unstructured aggregates, which, as shown by NMR, may be caused by angiogenin's propensity to form oligomers. Binding of angiogenin to preformed F-actin does not cause depolymerization of actin filaments though it causes their stiffening. Binding of tropomyosin and angiogenin to F-actin is not competitive at concentrations sufficient for saturation of actin filaments. These observations suggest that angiogenin may cause changes in the cell cytoskeleton by inhibiting polymerization of G-actin and changing the physical properties of F-actin.
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Seilhean D, Cazeneuve C, Thuriès V, Russaouen O, Millecamps S, Salachas F, Meininger V, Leguern E, Duyckaerts C. Accumulation of TDP-43 and alpha-actin in an amyotrophic lateral sclerosis patient with the K17I ANG mutation. Acta Neuropathol 2009; 118:561-73. [PMID: 19449021 DOI: 10.1007/s00401-009-0545-9] [Citation(s) in RCA: 54] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2008] [Revised: 04/28/2009] [Accepted: 04/29/2009] [Indexed: 12/11/2022]
Abstract
A K17I mutation in the ANG gene encoding angiogenin has been identified in a case that we previously published as ALS with neuronal intranuclear protein inclusions (Seilhean et al. in Acta Neuropathol 108:81-87, 2004). These inclusions were immunoreactive for smooth muscle alpha-actin but not for angiogenin. Moreover, they were not labeled by anti-TDP-43 antibodies, while numerous cytoplasmic inclusions immunoreactive for ubiquitin, p62 and TDP-43 were detected in both oligodendrocytes and neurons in various regions of the central nervous system. In addition, expression of smooth muscle alpha-actin was increased in the liver where severe steatosis was observed. This is the first neuropathological description of a case with an ANG mutation. Angiogenin is known to interact with actin. Like other proteins involved in ALS pathogenesis, such as senataxin, TDP-43 and FUS/TLS, it plays a role in RNA maturation.
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Affiliation(s)
- Danielle Seilhean
- Département de Neuropathologie, UPMC Université Paris 06, AP-HP, Assistance Publique Hôpitaux de Paris, Groupe Hospitalier Pitié-Salpêtrière, INSERM UMR-S 546 (DS) and UMR-S 679 (CD), 47-83 boulevard de l'Hôpital, Paris cedex 13, France.
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Patel JV, Abraheem A, Chackathayil J, Gunning M, Creamer J, Hughes EA, Lip GYH. Circulating biomarkers of angiogenesis as indicators of left ventricular systolic dysfunction amongst patients with coronary artery disease. J Intern Med 2009; 265:562-7. [PMID: 19187100 DOI: 10.1111/j.1365-2796.2008.02057.x] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
BACKGROUND Patients with coronary artery disease (CAD) and left ventricular systolic dysfunction (LVSD) are often asymptomatic. Angiogenesis is implicated in the physiology of vascular repair and cardiac remodelling, and is one of many pathophysiological processes implicated in heart failure. We hypothesized that plasma indices associated with angiogenesis [angiogenin, vascular endothelial growth factor (VEGF), and angiopoietin (Ang)-1 and Ang-2] would be abnormal in CAD patients with LVSD, being correlated with EF and wall motion abnormalities (wall motion score) independently of underlying CAD (coronary atheroma score). We also evaluated the specificity of angiogenic 'biomarkers' in their detection of LVSD [ejection fraction (EF) <40%] amongst CAD patients. METHODS Using a cross sectional approach, we measured angiogenin, VEGF, Ang-1 and Ang-2 by ELISA in 194 CAD patients (aged 34-81 years) undergoing elective coronary angiography. RESULTS Levels of angiogenin were inversely related with EF (r = -0.17, P = 0.02) and positively with coronary atheroma scores (r = 0.15, P = 0.04, but not independently of EF). Other angiogenic markers were unrelated to objective measures of LVSD but VEGF (P = 0.008) and Ang-2 (P = 0.015) were lower amongst those patients with heart failure. Angiogenin levels were related to wall motion scores (r = 0.16, P = 0.024). CONCLUSION Heart failure has a modest impact on biomarkers of angiogenesis, in patients with CAD. Further research is warranted into the diagnostic and prognostic utility of biomarkers of angiogenesis, in this common cardiac condition.
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Affiliation(s)
- J V Patel
- Haemostasis Thrombosis and Vascular Biology Unit, University Department of Medicine, City Hospital, Birmingham, UK
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Zhou N, Fan W, Li M. Angiogenin is expressed in human dermal papilla cells and stimulates hair growth. Arch Dermatol Res 2008; 301:139-49. [PMID: 18936943 DOI: 10.1007/s00403-008-0907-5] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2008] [Revised: 09/10/2008] [Accepted: 09/23/2008] [Indexed: 12/01/2022]
Abstract
The perifollicular vasculature undergoes hair-cycle dependent expansion and degeneration. Multiple soluble factors derived from dermal papilla cells (DPCs) may act on surrounding blood vessels to influence angiogenesis, growth and differentiation, and thereby regulate cyclic hair growth. The goal of this study was to examine the expression of angiogenin, a potent angiogenic factor, in human DPCs, and to determine its role in hair growth. Reverse transcription polymerase chain reaction (RT-PCR), western blotting, immunofluorescence and ELISA analyzes were used to investigate the expression of angiogenin in human DPCs, while semi-quantitative RT-PCR was used to assess angiogenin mRNA expression in murine skin phased at different stages of the hair cycle. We detected angiogenin expression in DPCs, where it was found to be localized to the cytoplasm. Angiogenin mRNA was expressed in murine skin in a hair-cycle dependent manner, with maximum levels observed at the late anagen. Local injection of angiogenin promoted skin angiogenesis and induced anagen VI. In vitro studies showed that angiogenin significantly enhanced the elongation of hair follicles, and stimulated DPCs and ORS keratinocytes to proliferate. Taken together, these findings show that angiogenin is expressed in human DPCs, where it might contribute to hair growth directly, by stimulating DPCs and ORS keratinocytes to proliferate, or indirectly, by inducing local vascularization.
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Affiliation(s)
- Naihui Zhou
- Department of Dermatology, The First Affiliated Hospital of Nanjing Medical University, Guangzhou Road 300, 210029 Nanjing, Jiangsu, China
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Abstract
Angiogenin induces angiogenesis by activating vessel endothelial and smooth muscle cells and triggering a number of biological processes, including cell migration, invasion, proliferation, and formation of tubular structures. It has been reported that angiogenin plays its functions mainly through four pathways: (1) exerting its ribonucleolytic activity; (2) binding to membrane actin and then inducing basement membrane degradation; (3) binding to a putative 170-kDa protein and subsequently transducing signal into cytoplasm; and (4) translocating into the nucleus of target cells directly and then enhancing ribosomal RNA transcription. Angiogenin can also translocate into the nucleus of cancer cells and induces the corresponding cell proliferation. Furthermore, angiogenin has neuroprotective activities in the central nervous system and the loss of its function may be related to amyotrophic lateral sclerosis. This review intends to conclude the mechanisms underlying these actions of angiogenin and give a perspective on future research.
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Affiliation(s)
- Xiangwei Gao
- Research Center for Environmental Genomics, Bioelectromagnetics Laboratory, Zhejiang University School of Medicine, Hangzhou 310058, China
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Zhang H, Gao X, Weng C, Xu Z. Interaction between angiogenin and fibulin 1: evidence and implication. Acta Biochim Biophys Sin (Shanghai) 2008; 40:375-80. [PMID: 18465022 DOI: 10.1111/j.1745-7270.2008.00420.x] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023] Open
Abstract
Angiogenin is an angiogenic factor involved in tumorigenesis. However, the mechanism of angiogenin's action remains elusive. In the present study, we identified fibulin 1, an extracellular matrix and plasma glycoprotein, as an angiogenin-interacting molecule by yeast two-hybrid screening. This interaction was further confirmed by two different approaches. First, fibulin 1 was co-immunoprecipitated with angiogenin by anti-angiogenin monoclonal antibody in vitro, suggesting angiogenin binds with fibulin 1 directly. Then fluorescence resonance energy transfer analysis showed that fibulin 1 interacted with angiogenin in COS-7 cells, showing that the binding could occur in a cellular context. As fibulin 1 plays an important role in cell proliferation, migration, adhesion, and stabilizes new-forming blood vessel wall, the interaction between fibulin 1 and angiogenin might underline one possible mechanism of angiogenin in angiogenesis and/or tumorigenesis.
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Affiliation(s)
- Hui Zhang
- Research Center for Environmental Genomics, and Bioelectromagnetics Laboratory, Zhejiang University School of Medicine, Hangzhou.
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Gao X, Hu H, Zhu J, Xu Z. Identification and characterization of follistatin as a novel angiogenin-binding protein. FEBS Lett 2007; 581:5505-10. [DOI: 10.1016/j.febslet.2007.10.059] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2007] [Revised: 10/20/2007] [Accepted: 10/25/2007] [Indexed: 10/22/2022]
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Osorio DS, Antunes A, Ramos MJ. Structural and functional implications of positive selection at the primate angiogenin gene. BMC Evol Biol 2007; 7:167. [PMID: 17883850 PMCID: PMC2194721 DOI: 10.1186/1471-2148-7-167] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2006] [Accepted: 09/20/2007] [Indexed: 01/22/2023] Open
Abstract
BACKGROUND Angiogenesis, the formation of new blood vessels, is a primordial process in development and its dysregulation has a central role in the pathogenesis of many diseases. Angiogenin (ANG), a peculiar member of the RNase A superfamily, is a potent inducer of angiogenesis involved in many different types of cancer, amyotrophic lateral sclerosis and also with a possible role in the innate immune defense. The evolutionary path of this family has been a highly dynamic one, where positive selection has played a strong role. In this work we used a combined gene and protein level approach to determine the main sites under diversifying selection on the primate ANG gene and analyze its structural and functional implications. RESULTS We obtained evidence for positive selection in the primate ANG gene. Site specific analysis pointed out 15 sites under positive selection, most of which also exhibited drastic changes in amino acid properties. The mapping of these sites in the ANG 3D-structure described five clusters, four of which were located in functional regions: two in the active site region, one in the nucleolar location signal and one in the cell-binding site. Eight of the 15 sites under selection in the primate ANG gene were highly or moderately conserved in the RNase A family, suggesting a directed event and not a simple consequence of local structural or functional permissiveness. Moreover, 11 sites were exposed to the surface of the protein indicating that they may influence the interactions performed by ANG. CONCLUSION Using a maximum likelihood gene level analysis we identified 15 sites under positive selection in the primate ANG genes, that were further corroborated through a protein level analysis of radical changes in amino acid properties. These sites mapped onto the main functional regions of the ANG protein. The fact that evidence for positive selection is present in all ANG regions required for angiogenesis may be a good indication that angiogenesis is the process under selection. However, other possibilities to be considered arise from the possible involvement of ANG in innate immunity and the potential influence or co-evolution with its interacting proteins and ligands.
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Affiliation(s)
- Daniel S Osorio
- REQUIMTE, Departamento de Química, Faculdade de Ciências, Universidade do Porto, Rua do Campo Alegre, 687, 4169-007 Porto, Portugal
- INSERM UMR S 787-Groupe Myologie, Faculté de Médecine – Pitié-Salpétrière, UPMC Paris VI, 105 bd. de l'Hôpital, 75634, Paris Cedex 13, France
| | - Agostinho Antunes
- REQUIMTE, Departamento de Química, Faculdade de Ciências, Universidade do Porto, Rua do Campo Alegre, 687, 4169-007 Porto, Portugal
- CIMAR, Centro Interdisciplinar de Investigação Marinha e Ambiental, Universidade do Porto, Rua dos Bragas, 177, 4050-123 Porto, Portugal
| | - Maria J Ramos
- REQUIMTE, Departamento de Química, Faculdade de Ciências, Universidade do Porto, Rua do Campo Alegre, 687, 4169-007 Porto, Portugal
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Tello-Montoliu A, Patel JV, Lip GYH. Angiogenin: a review of the pathophysiology and potential clinical applications. J Thromb Haemost 2006; 4:1864-74. [PMID: 16961595 DOI: 10.1111/j.1538-7836.2006.01995.x] [Citation(s) in RCA: 162] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
Angiogenin is a member of the ribonuclease (RNase) superfamily: enzymes of innate substrate specificity, but divergent functional capacities. Angiogenin is a normal constituent of the circulation and contained in a vasculature that rarely undergoes proliferation, but in some physiological and pathological conditions its levels increase in blood, promoting neovascularization. Hence, angiogenesis is a common pathophysiological attribute of angiogenin. In malignant disease, the most studied pathological state in regard to angionenin, abnormally high levels are seen, which may be of prognostic significance. Angiogenin has also been studied in other non-malignant pathological states. The aim of this review article is to provide an overview of the biochemistry and physiology of angiogenin, specifically in relation to the human pathological states where angiogenin has been implicated and finally, its potential clinical applications.
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Affiliation(s)
- A Tello-Montoliu
- Haemostasis, Thrombosis and Vascular Biology Unit, University Department of Medicine, City Hospital, Birmingham, UK
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