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Vijayan V, Sreekumar S, Singh F, Srivatsan KV, Lakra R, Sai KP, Kiran MS. Nanotized praseodymium oxide collagen 3-D pro-vasculogenic biomatrix for soft tissue engineering. NANOMEDICINE-NANOTECHNOLOGY BIOLOGY AND MEDICINE 2021; 33:102364. [PMID: 33515752 DOI: 10.1016/j.nano.2021.102364] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/13/2020] [Revised: 01/05/2021] [Accepted: 01/11/2021] [Indexed: 12/12/2022]
Abstract
The current study explores development of highly vascularizable biomatrix scaffold containing rare-earth metal praseodymium oxide nanoadditives for angiogenic and soft tissue regenerative applications. The therapeutic potential of praseodymium oxide nanoparticles rendered excellent endothelial cell differentiation for inducing pro angiogenic microenvironment by eliciting VE-Cadherin expression in the biomatrix scaffold. The nanoparticles were incorporated into bio-macromolecule collagen which aided in stabilization of collagen by maintaining the structural integrity of collagen and showed less susceptibility towards protease enzymes, high cyto-compatibility and high hemo-compatibility. The scaffold provided 3-dimensional micro-environments for the proliferation of endothelial cells and fibroblast cells promoting the wound healing process in an orchestrated fashion. Biological signal modulatory property of rare earth metal is the unexplored domains that can essentially bring significant therapeutic advancement in engineering advanced biological materials. This study opens potential use of nano-scaled rare earth metals in biomaterial application for tissue regeneration by modulating the pro-angiogenesis and anti-proteolysis properties.
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Affiliation(s)
- Vinu Vijayan
- Biological Materials Laboratory, Council of Scientific and Industrial Research-Central Leather Research Institute, Chennai, Tamil Nadu, India; University of Madras, Chennai, Tamil Nadu, India
| | - Sreelekshmi Sreekumar
- Biological Materials Laboratory, Council of Scientific and Industrial Research-Central Leather Research Institute, Chennai, Tamil Nadu, India; Academy of Scientific and Innovative Research, Council of Scientific and Industrial Research-Central Leather Research Institute, Chennai, Tamil Nadu, India
| | - Fathe Singh
- Biological Materials Laboratory, Council of Scientific and Industrial Research-Central Leather Research Institute, Chennai, Tamil Nadu, India; Academy of Scientific and Innovative Research, Council of Scientific and Industrial Research-Central Leather Research Institute, Chennai, Tamil Nadu, India
| | - Kunnavakkam Vinjimur Srivatsan
- Biological Materials Laboratory, Council of Scientific and Industrial Research-Central Leather Research Institute, Chennai, Tamil Nadu, India
| | - Rachita Lakra
- Biological Materials Laboratory, Council of Scientific and Industrial Research-Central Leather Research Institute, Chennai, Tamil Nadu, India
| | - Korrapati Purna Sai
- Biological Materials Laboratory, Council of Scientific and Industrial Research-Central Leather Research Institute, Chennai, Tamil Nadu, India; Academy of Scientific and Innovative Research, Council of Scientific and Industrial Research-Central Leather Research Institute, Chennai, Tamil Nadu, India
| | - Manikantan Syamala Kiran
- Biological Materials Laboratory, Council of Scientific and Industrial Research-Central Leather Research Institute, Chennai, Tamil Nadu, India; University of Madras, Chennai, Tamil Nadu, India; Academy of Scientific and Innovative Research, Council of Scientific and Industrial Research-Central Leather Research Institute, Chennai, Tamil Nadu, India.
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2
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Mohandas A, Rangasamy J. Nanocurcumin and arginine entrapped injectable chitosan hydrogel for restoration of hypoxia induced endothelial dysfunction. Int J Biol Macromol 2020; 166:471-482. [PMID: 33129903 DOI: 10.1016/j.ijbiomac.2020.10.205] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2020] [Revised: 10/16/2020] [Accepted: 10/26/2020] [Indexed: 11/19/2022]
Abstract
Hypoxia is a condition that gradually leads to ischemic damages in organs which is marked by poor tissue perfusion. Depending on the severity of the condition, revascularisation therapies are needed for reducing the risk of organ dysfunction. This study was aimed at developing an injectable nanocurcumin and arginine incorporated chitosan hydrogel (nC/R) that can prevent hypoxia induced endothelial damage. The prepared hydrogel has shear thinning, stable and injectable nature. The (nC and nC/R) hydrogels showed significant antioxidant activity and biodegradation in vitro. The release of curucmin and arginine from the nC/R was found to be higher at acidic pH, which predominates in an ischemic site. To mimic low oxygen environment, an in vitro hypoxic endothelial dysfunction model was developed which showed decreased expressions of phosphorylated eNOS (serine 1177) when compared to the cells cultured in normoxic condition. In vitro tube formation assay demonstrated the protective effect of nC/R towards hypoxia induced reduction of tube width. The nC/R hydrogel was found to enhance phosphorylation of eNOS at serine 1177 site in cultured endothelial cells subjected to hypoxia. Therefore, nC/R hydrogel could effectively deliver both curcumin and arginine and therapeutically reduce the effect of hypoxia induced endothelial dysfunction.
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Affiliation(s)
- Annapoorna Mohandas
- Centre for Nanosciences and Molecular Medicine, Amrita Vishwa Vidyapeetham, Kochi 682 041, India
| | - Jayakumar Rangasamy
- Centre for Nanosciences and Molecular Medicine, Amrita Vishwa Vidyapeetham, Kochi 682 041, India.
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3
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Hou L, Yang G, Tang S, Alcazar C, Joshi P, Strassberg Z, Kim M, Kawamura M, Woo YJ, Shrager J, Ding S, Huang NF. Small Molecule Derived From Carboxyethylpyrrole Protein Adducts Promotes Angiogenesis in a Mouse Model of Peripheral Arterial Disease. J Am Heart Assoc 2019; 7:e009234. [PMID: 30371212 PMCID: PMC6222956 DOI: 10.1161/jaha.118.009234] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Background CEP (ω-[2-carboxyethyl]pyrrole) protein adducts are the end products of lipid oxidation associated with inflammation and have been implicated in the induction of angiogenesis in pathological conditions such as tissue ischemia. We synthesized small molecules derived from CEP protein adducts and evaluated the angiogenic effect of the CEP analog CEP 03 in the setting of peripheral arterial disease. Methods and Results The angiogenic effect of CEP 03 was assessed by in vitro analysis of primary human microvascular endothelial cell proliferation and tubelike formation in Matrigel (Corning). In the presence of CEP 03, proliferation of endothelial cells in vitro increased by 27±18% under hypoxic (1% O2) conditions, reaching similar levels to that of VEGF A (vascular endothelial growth factor A) stimulation (22±10%), relative to the vehicle control treatment. A similar effect of CEP 03 was demonstrated in the increased number of tubelike branches in Matrigel, reaching >70% induction in hypoxia, compared with the vehicle control. The therapeutic potential of CEP 03 was further evaluated in a mouse model of peripheral arterial disease by quantification of blood perfusion recovery and capillary density. In the ischemic hind limb, treatment of CEP 03 encapsulated within Matrigel significantly enhanced blood perfusion by 2-fold after 14 days compared with those treated with Matrigel alone. Moreover, these results concurred with histological finding that treatment of CEP 03 in Matrigel resulted in a significant increase in microvessel density compared with Matrigel alone. Conclusions Our data suggest that CEP 03 has a profound positive effect on angiogenesis and neovessel formation and thus has therapeutic potential for treatment of peripheral arterial disease.
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Affiliation(s)
- Luqia Hou
- 1 Stanford Cardiovascular Institute Stanford University Stanford CA.,2 Veterans Affairs Palo Alto Health Care System Palo Alto CA
| | - Guang Yang
- 1 Stanford Cardiovascular Institute Stanford University Stanford CA.,2 Veterans Affairs Palo Alto Health Care System Palo Alto CA
| | - Shibing Tang
- 3 Gladstone Institute of Cardiovascular Disease University of California San Francisco CA
| | - Cynthia Alcazar
- 1 Stanford Cardiovascular Institute Stanford University Stanford CA.,2 Veterans Affairs Palo Alto Health Care System Palo Alto CA
| | - Prajakta Joshi
- 1 Stanford Cardiovascular Institute Stanford University Stanford CA.,2 Veterans Affairs Palo Alto Health Care System Palo Alto CA
| | - Zachary Strassberg
- 1 Stanford Cardiovascular Institute Stanford University Stanford CA.,2 Veterans Affairs Palo Alto Health Care System Palo Alto CA
| | - Michael Kim
- 2 Veterans Affairs Palo Alto Health Care System Palo Alto CA.,4 Department of Cardiothoracic Surgery Stanford University Stanford CA
| | - Masashi Kawamura
- 1 Stanford Cardiovascular Institute Stanford University Stanford CA.,4 Department of Cardiothoracic Surgery Stanford University Stanford CA
| | - Y Joseph Woo
- 1 Stanford Cardiovascular Institute Stanford University Stanford CA.,4 Department of Cardiothoracic Surgery Stanford University Stanford CA
| | - Joseph Shrager
- 2 Veterans Affairs Palo Alto Health Care System Palo Alto CA.,4 Department of Cardiothoracic Surgery Stanford University Stanford CA
| | - Sheng Ding
- 3 Gladstone Institute of Cardiovascular Disease University of California San Francisco CA.,5 Department of Pharmaceutical Chemistry University of California San Francisco CA
| | - Ngan F Huang
- 1 Stanford Cardiovascular Institute Stanford University Stanford CA.,2 Veterans Affairs Palo Alto Health Care System Palo Alto CA.,4 Department of Cardiothoracic Surgery Stanford University Stanford CA
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N D, Manikantan Syamala K. Effects of structural distinction in neodymium nanoparticle for therapeutic application in aberrant angiogenesis. Colloids Surf B Biointerfaces 2019; 181:450-460. [PMID: 31176117 DOI: 10.1016/j.colsurfb.2019.05.073] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/26/2018] [Revised: 04/23/2019] [Accepted: 05/28/2019] [Indexed: 02/06/2023]
Abstract
In the present study we analyzed the effect of structural distinction in neodymium nanostructures for modulating angiogenic process as the strategy for identifying biocompatible Nano therapeutics for biomedical applications. We observed structural dependence of Nd nanoparticles on biocompatibility, the spherical polymorphs showed better biocompatibility when compared with cuboidal and nanorod shaped polymorphs of neodymium. The Nd nanopolymorphs in spherical morphology exhibited least redox modulating effect compared to cuboidal shaped that was higher when compared to Nd nanorods. The efficacy of the Nd Nanopolymorphs to induce biological effect in particular on angiogenic process was observed to be directly related to the polymorphs ability to modulate redox signaling. The redox signaling was observed to be via PKM2-NOX4 signaling pathways. Further the results demonstrated that ROS generated by cuboid and rod shaped nanopolymorphs activated the pro-angiogenic factors namely VE-cadherin, HIF 1α, VEGF and VEGFR-2 to facilitate the angiogenic process. The manuscript highlights the importance of rare earth metal nanoparticles in modulating biological process for therapeutic interventions. The present study opens up a new domain in developing novel biocompatible therapeutics based on rare earth metal nanoparticles for regulating disease pathophysiology.
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Affiliation(s)
- Duraipandy N
- Biological Materials Laboratory, CSIR-Central Leather Research Institute, Adyar, Chennai, 20, India; Academy of Scientific and Innovative Research, CSIR-CLRI, Chennai, 20, India
| | - Kiran Manikantan Syamala
- Biological Materials Laboratory, CSIR-Central Leather Research Institute, Adyar, Chennai, 20, India; Academy of Scientific and Innovative Research, CSIR-CLRI, Chennai, 20, India.
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5
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Wang TY, Chen JX. Effects of Curcumin on Vessel Formation Insight into the Pro- and Antiangiogenesis of Curcumin. EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE : ECAM 2019; 2019:1390795. [PMID: 31320911 PMCID: PMC6607718 DOI: 10.1155/2019/1390795] [Citation(s) in RCA: 31] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/21/2019] [Revised: 05/02/2019] [Accepted: 06/02/2019] [Indexed: 12/18/2022]
Abstract
Curcumin is a compound extracted from the Curcuma longa L, which possesses a wide range of pharmacological effects. However, few studies have collected scientific evidence on its dual effect on angiogenesis. The present review gathered the fragmented information available in the literature to discuss the dual effect and possible mechanisms of curcumin on angiogenesis. Available information concerning the effect of curcumin on angiogenesis is compiled from scientific databases, including PubMed and Web of Science using the key term (curcumin and angiogenesis). The results were reviewed to identify relevant articles. Related literature demonstrated that curcumin has antiangiogenesis effect via regulating multiple factors, including proangiogenesis factor VEGF, MMPs, and FGF, both in vivo and in vitro, and could promote angiogenesis under certain circumstances via these factors. This paper provided a short review on bidirectional action of curcumin, which should be useful for further study and application of this compound that require further studies.
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Affiliation(s)
- Ting-ye Wang
- School of Traditional Chinese Medicine, Beijing University of Chinese Medicine, Beijing 100029, China
| | - Jia-xu Chen
- School of Traditional Chinese Medicine, Beijing University of Chinese Medicine, Beijing 100029, China
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6
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Duraipandy N, Lakra R, Korrapati PS, Sudhakaran PR, Kiran MS. Targeting Pyruvate Kinase M2, β Catenin Signaling by Juglone Silver Nano Framework for Selective Cancer Cell Death. ChemistrySelect 2018. [DOI: 10.1002/slct.201800152] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Affiliation(s)
- N. Duraipandy
- Biological Materials Laboratory; CSIR-Central Leather Research Institute; Adyar Chennai-20
- Academy of Scientific and Innovative Research; CSIR-CLRI; Chennai-20
| | - Rachita Lakra
- Biological Materials Laboratory; CSIR-Central Leather Research Institute; Adyar Chennai-20
| | - Purna Sai Korrapati
- Biological Materials Laboratory; CSIR-Central Leather Research Institute; Adyar Chennai-20
- Academy of Scientific and Innovative Research; CSIR-CLRI; Chennai-20
| | - Perumana R. Sudhakaran
- Department of Computational Biology and Bioinformatics; University of Kerala, Kariavattom, Thiruvananthapuram; Kerala India 695581
| | - Manikantan Syamala Kiran
- Biological Materials Laboratory; CSIR-Central Leather Research Institute; Adyar Chennai-20
- Academy of Scientific and Innovative Research; CSIR-CLRI; Chennai-20
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7
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Injectable chitosan-fibrin/nanocurcumin composite hydrogel for the enhancement of angiogenesis. RESEARCH ON CHEMICAL INTERMEDIATES 2018. [DOI: 10.1007/s11164-018-3340-1] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
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8
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Athira A, Abhinand C, Saja K, Helen A, Reddanna P, Sudhakaran P. Anti-angiogenic effect of chebulagic acid involves inhibition of the VEGFR2- and GSK-3β-dependent signaling pathways. Biochem Cell Biol 2017; 95:563-570. [DOI: 10.1139/bcb-2016-0132] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
Inhibition of angiogenesis is a useful strategy to prevent cancer growth by targeting new vessels that grow to nourish actively proliferating tumor cells. Endothelial cells can use a number of different pathways to cause angiogenesis, and each step in these pathways can be targeted. The use of multi-targeted drugs is gaining much importance in this scenario. Our previous results have shown that chebulagic acid (a benzopyran tannin present in the fruits of Terminalia chebula) has anti-angiogenic properties. Thus, this study was designed to examine the molecular mechanism for the anti-angiogenic effects of chebulagic acid. Results from our investigations using molecular docking studies and human umbilical vein endothelial cells in culture suggested that chebulagic acid inhibits both GSK-3β-dependent β-catenin phosphorylation (an important mediator of VE-cadherin–β-catenin signaling) and VEGFR2 phosphorylation, which is an important step in VEGF signaling. Chebulagic acid inhibits angiogenesis by blocking both the VEGF–VEGFR2 complex and cell–cell contact dependent downstream signaling pathways.
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Affiliation(s)
- A.P. Athira
- Department of Biochemistry, University of Kerala, Thiruvananthapuram, Kerala-695581, India
| | - C.S. Abhinand
- Department of Computational Biology and Bioinformatics, University of Kerala, Thiruvananthapuram, Kerala-695581, India
| | - K. Saja
- Department of Biochemistry, University of Kerala, Thiruvananthapuram, Kerala-695581, India
| | - A. Helen
- Department of Biochemistry, University of Kerala, Thiruvananthapuram, Kerala-695581, India
| | - P. Reddanna
- Department of Animal Sciences, School of Life Sciences, University of Hyderabad Campus, Hyderabad-500046, India
| | - P.R. Sudhakaran
- Department of Biochemistry, University of Kerala, Thiruvananthapuram, Kerala-695581, India
- Department of Computational Biology and Bioinformatics, University of Kerala, Thiruvananthapuram, Kerala-695581, India
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9
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You J, Sun J, Ma T, Yang Z, Wang X, Zhang Z, Li J, Wang L, Ii M, Yang J, Shen Z. Curcumin induces therapeutic angiogenesis in a diabetic mouse hindlimb ischemia model via modulating the function of endothelial progenitor cells. Stem Cell Res Ther 2017; 8:182. [PMID: 28774328 PMCID: PMC5543575 DOI: 10.1186/s13287-017-0636-9] [Citation(s) in RCA: 50] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2017] [Revised: 06/22/2017] [Accepted: 07/21/2017] [Indexed: 01/01/2023] Open
Abstract
Background Neovascularization is impaired in diabetes mellitus, which leads to the development of peripheral arterial disease and is mainly attributed to the dysfunction of endothelial progenitor cells (EPCs). Previous studies proved the promotional effect of curcumin on neovascularization in wound healing of diabetes. Thus, we hypothesize that curcumin could promote neovascularization at sites of hindlimb ischemia in diabetes and might take effect via modulating the function of EPCs. Methods Streptozotocin-induced type 1 diabetic mice and nondiabetic mice both received unilateral hindlimb ischemic surgery. Curcumin was then administrated to the mice by lavage for 14 days consecutively. Laser Doppler perfusion imaging was conducted to demonstrate the blood flow reperfusion. Capillary density was measured in the ischemic gastrocnemius muscle. In addition, angiogenesis, migration, proliferation abilities, and senescence were determined in EPCs isolated from diabetic and nondiabetic mice. Quantitative PCR was then used to determine the mRNA expression of vascular endothelial growth factor (VEGF) and angiopoetin-1 (Ang-1) in EPCs. Results Curcumin application to type 1 diabetic mice significantly improved blood reperfusion and increased the capillary density in ischemic hindlimbs. The in-vitro study also revealed that the angiogenesis, migration, and proliferation abilities of EPCs and the number of senescent EPCs were reversed by curcumin application. Quantitative PCR confirmed the overexpression of VEGF-A and Ang-1 in EPCs after curcumin treatment. Conclusion Curcumin could enhance neovascularization via promoting the function of EPCs in a diabetic mouse hindlimb ischemia model. Electronic supplementary material The online version of this article (doi:10.1186/s13287-017-0636-9) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Jinzhi You
- Department of Cardiovascular Surgery of the First Affiliated Hospital & Institute for Cardiovascular Science, Soochow University, Suzhou, China
| | - Jiacheng Sun
- Department of Cardiovascular Surgery of the First Affiliated Hospital & Institute for Cardiovascular Science, Soochow University, Suzhou, China
| | - Teng Ma
- Department of Cardiovascular Surgery of the First Affiliated Hospital & Institute for Cardiovascular Science, Soochow University, Suzhou, China
| | - Ziying Yang
- Department of Cardiovascular Surgery of the First Affiliated Hospital & Institute for Cardiovascular Science, Soochow University, Suzhou, China
| | - Xu Wang
- Department of Cardiovascular Surgery of the First Affiliated Hospital & Institute for Cardiovascular Science, Soochow University, Suzhou, China
| | - Zhiwei Zhang
- Department of Cardiovascular Surgery of the First Affiliated Hospital & Institute for Cardiovascular Science, Soochow University, Suzhou, China
| | - Jingjing Li
- Department of Cardiovascular Surgery of the First Affiliated Hospital & Institute for Cardiovascular Science, Soochow University, Suzhou, China
| | - Longgang Wang
- Department of Cardiovascular Surgery of the First Affiliated Hospital & Institute for Cardiovascular Science, Soochow University, Suzhou, China
| | - Masaaki Ii
- Division of Research Animal Laboratory and Translational Medicine, Osaka Medical College, Osaka, Japan
| | - Junjie Yang
- Department of Cardiovascular Surgery of the First Affiliated Hospital & Institute for Cardiovascular Science, Soochow University, Suzhou, China.
| | - Zhenya Shen
- Department of Cardiovascular Surgery of the First Affiliated Hospital & Institute for Cardiovascular Science, Soochow University, Suzhou, China.
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Dharunya G, Duraipandy N, Lakra R, Korapatti PS, Jayavel R, Kiran MS. Curcumin cross-linked collagen aerogels with controlled anti-proteolytic and pro-angiogenic efficacy. ACTA ACUST UNITED AC 2016; 11:045011. [PMID: 27509047 DOI: 10.1088/1748-6041/11/4/045011] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
This paper elucidates the development of a curcumin cross-linked collagen aerogel system with controlled anti-proteolytic activity and pro-angiogenic efficacy. The results of this study showed that in situ cross-linking of curcumin with collagen leads to the development of aerogels with enhanced physical and mechanical properties. The integrity of collagen after cross-linking with curcumin was studied via FTIR spectroscopy. The results confirmed that the cross-linking with curcumin did not induce any structural changes in the collagen. The curcumin cross-linked collagen aerogels exhibited potent anti-proteolytic and anti-microbial activity. Scanning electron and atomic force microscopic analysis of curcumin cross-linked collagen aerogels showed a 3D microstructure that enhanced the adhesion and proliferation of cells. The highly organized geometry of collagen-curcumin aerogels enhanced the permeability and water-retaining ability required for the diffusion of nutrients that aid cellular growth. The pro-angiogenic properties of collagen-curcumin aerogels were ascribed to the cumulative effect of the nutraceutical and the collagen molecule, which augmented the restoration of damaged tissue. Further, these aerogels exhibited controlled anti-proteolytic activity, which makes them suitable 3D scaffolds for biomedical applications. This study provides scope for the development of biocompatible and bioresorbable collagen aerogel systems that use a nutraceutical as a cross-linker for biomedical applications.
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Affiliation(s)
- G Dharunya
- Biological Materials Laboratory, CSIR-Central Leather Research Institute, Adyar, Chennai 600020, Tamil Nadu, India
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11
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SHERIN DAISYR, RAJASEKHARAN KALLIKATN. Curcuminoid-derived 3,5-bis(styryl)isoxazoles - Mechanochemical synthesis and antioxidant activity. J CHEM SCI 2016. [DOI: 10.1007/s12039-016-1119-8] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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12
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Sherin DR, Thomas SG, Rajasekharan KN. Mechanochemical synthesis of 2,2-difluoro-4, 6-bis(β-styryl)-1,3,2-dioxaborines and their use in cyanide ion sensing. HETEROCYCL COMMUN 2015. [DOI: 10.1515/hc-2015-0096] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
AbstractThe conversion of arylaldehydes to 1,7-diaryl-5-hydroxyhepta-1,4,6-trien-3-ones (curcuminoids) and the mechanochemical cyclization of these products to 2,2-difluoro-4,6-bis(β-styryl)-1,3,2-dioxaborines using BF3-Et2O are described. Investigation of the cyanide ion sensing ability of the 2,2-difluoro-4,6-bis(β-styryl)-1,3,2-dioxaborines, in relation to the substituent groups on the aryl ring, showed that a hydroxy susbstituent is required, preferably para to the intervening carbon bridge.
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Affiliation(s)
- Daisy R. Sherin
- 1Department of Chemistry, University of Kerala, Kariavattom, Thiruvananthapuram 695581, Kerala, India
| | - Sherin G. Thomas
- 1Department of Chemistry, University of Kerala, Kariavattom, Thiruvananthapuram 695581, Kerala, India
| | - Kallikat N. Rajasekharan
- 1Department of Chemistry, University of Kerala, Kariavattom, Thiruvananthapuram 695581, Kerala, India
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Sherin DR, Rajasekharan KN. Mechanochemical Synthesis and Antioxidant Activity of Curcumin-Templated Azoles. Arch Pharm (Weinheim) 2015; 348:908-14. [DOI: 10.1002/ardp.201500305] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2015] [Revised: 10/21/2015] [Accepted: 10/21/2015] [Indexed: 11/12/2022]
Affiliation(s)
- Daisy R. Sherin
- Department of Chemistry; University of Kerala, Kariavattom; Thiruvananthapuram Kerala India
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Fan S, Xu Y, Li X, Tie L, Pan Y, Li X. Opposite angiogenic outcome of curcumin against ischemia and Lewis lung cancer models: in silico, in vitro and in vivo studies. Biochim Biophys Acta Mol Basis Dis 2014; 1842:1742-54. [PMID: 24970744 DOI: 10.1016/j.bbadis.2014.06.019] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2014] [Revised: 04/30/2014] [Accepted: 06/17/2014] [Indexed: 11/30/2022]
Abstract
The aim of this study was to investigate the angiogenic effects of curcumin on an ischemia and lung cancer model. To induce ischemia combined with lung cancer models, unilateral femoral arteries of C57BL/6 mice were disconnected on one side of the mouse and Lewis lung carcinoma (LLC) cells were xenografted on the opposite side. Angiogenic effects and underlying mechanisms associated with curcumin were investigated. Molecular target(s), signaling cascades and binding affinities were detected by Western blot, two-dimensional gel electrophoresis (2-DE), computer simulations and surface plasmon resonance (SPR) techniques. Curcumin promoted post-ischemic blood recirculation and suppressed lung cancer progression in inbred C57BL/6 mice via regulation of the HIF1α/mTOR/VEGF/VEGFR cascade oppositely. Inflammatory stimulation induced by neutrophil elastase (NE) promoted angiogenesis in lung cancer tissues, but these changes were reversed by curcumin through directly reducing NE secretion and stimulating α1-antitrypsin (α1-AT) and insulin receptor substrate-1 (IRS-1) production. Meanwhile, curcumin dose-dependently influenced endothelial cells (EC) tube formation and chicken embryo chorioallantoic membrane (CAM) neovascularization. Curcumin had opposite effects on blood vessel regeneration under physiological and pathological angiogenesis, which was effected through negative or positive regulation of the HIF1α/mTOR/VEGF/VEGFR cascade. Curcumin had the promise as a new treatment modality for both ischemic conditions and lung cancer simultaneously in the clinic.
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Affiliation(s)
- Shengjun Fan
- State Key Laboratory of Natural and Biomimetic Drugs, Department of Pharmacology, School of Basic Medical Sciences, Peking University Health Science Center, Beijing Key Laboratory of Tumor Systems Biology, Peking University, Beijing 100191, China.
| | - Yan Xu
- State Key Laboratory of Natural and Biomimetic Drugs, Department of Pharmacology, School of Basic Medical Sciences, Peking University Health Science Center, Beijing Key Laboratory of Tumor Systems Biology, Peking University, Beijing 100191, China.
| | - Xin Li
- State Key Laboratory of Natural and Biomimetic Drugs, Department of Pharmacology, School of Basic Medical Sciences, Peking University Health Science Center, Beijing Key Laboratory of Tumor Systems Biology, Peking University, Beijing 100191, China.
| | - Lu Tie
- State Key Laboratory of Natural and Biomimetic Drugs, Department of Pharmacology, School of Basic Medical Sciences, Peking University Health Science Center, Beijing Key Laboratory of Tumor Systems Biology, Peking University, Beijing 100191, China.
| | - Yan Pan
- State Key Laboratory of Natural and Biomimetic Drugs, Department of Pharmacology, School of Basic Medical Sciences, Peking University Health Science Center, Beijing Key Laboratory of Tumor Systems Biology, Peking University, Beijing 100191, China.
| | - Xuejun Li
- State Key Laboratory of Natural and Biomimetic Drugs, Department of Pharmacology, School of Basic Medical Sciences, Peking University Health Science Center, Beijing Key Laboratory of Tumor Systems Biology, Peking University, Beijing 100191, China.
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15
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Metabolite control of angiogenesis: angiogenic effect of citrate. J Physiol Biochem 2012; 69:383-95. [PMID: 23161184 DOI: 10.1007/s13105-012-0220-9] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2012] [Accepted: 10/30/2012] [Indexed: 12/27/2022]
Abstract
Endothelial cells respond to hypoxic changes with resultant accumulation of several metabolites and switch over to angiogenic phenotype. Although certain intermediates of glycolytic and oxidative metabolic pathways have been known to affect angiogenesis, the effect of citrate, which accumulates in certain tumors, on angiogenesis is not known. Therefore, the effect of citrate on angiogenesis was studied using different model systems. Increased vascularization in chorioallantoic membrane assay, increased endothelial sprouting in rat aortic rings, and increased expression of CD31, E-selectin in endothelial cells suggested a possible proangiogenic effect of citrate. Upregulation of angiogenic factors such as vascular endothelial growth factor and fibroblast growth factor suggested that the effect of citrate involves modulation of expression of angiogenic growth factors. LY 294002, an inhibitor of PI3K-Akt pathway, and wortmannin, an inhibitor of Akt pathway, reversed the effect of citrate in human umbilical vein endothelial cells. Citrate induced significant upregulation and activation of Akt in endothelial cells. Rapamycin, an inhibitor of mTOR, also reversed the effect of citrate in human umbilical vein endothelial cells and sprouting of aortic rings suggesting that the angiogenic effect of citrate involves activation of PI3K-Akt-mTOR pathway.
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16
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Sefcik LS, Petrie Aronin CE, Botchwey EA. Engineering vascularized tissues using natural and synthetic small molecules. Organogenesis 2012; 4:215-27. [PMID: 19337401 DOI: 10.4161/org.4.4.6963] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2008] [Accepted: 09/10/2008] [Indexed: 12/21/2022] Open
Abstract
Vascular growth and remodeling are complex processes that depend on the proper spatial and temporal regulation of many different signaling molecules to form functional vascular networks. The ability to understand and regulate these signals is an important clinical need with the potential to treat a wide variety of disease pathologies. Current approaches have focused largely on the delivery of proteins to promote neovascularization of ischemic tissues, most notably VEGF and FGF. Although great progress has been made in this area, results from clinical trials are disappointing and safer and more effective approaches are required. To this end, biological agents used for therapeutic neovascularization must be explored beyond the current well-investigated classes. This review focuses on potential pathways for novel drug discovery, utilizing small molecule approaches to induce and enhance neovascularization. Specifically, four classes of new and existing molecules are discussed, including transcriptional activators, receptor selective agonists and antagonists, natural product-derived small molecules, and novel synthetic small molecules.
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Affiliation(s)
- Lauren S Sefcik
- Department of Biomedical Engineering; and Department of Orthopaedic Surgery; University of Virginia; Charlottesville, Virginia USA; Center for Immunity, Inflammation and Regenerative Medicine (CIIR); University of Virginia; Charlottesville, Virginia USA
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17
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Kiran MS, Viji RI, Kumar SV, Prabhakaran AA, Sudhakaran PR. Changes in expression of VE-cadherin and MMPs in endothelial cells: Implications for angiogenesis. Vasc Cell 2011; 3:6. [PMID: 21349163 PMCID: PMC3045352 DOI: 10.1186/2045-824x-3-6] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2009] [Accepted: 02/14/2011] [Indexed: 12/02/2022] Open
Abstract
The mechanism of cell-cell contact dependent regulation of pericellular proteolysis in angiogenesis was examined by studying the expression of MMPs using isolated HUVECs in culture. Zymography, Immunoblot and RT-PCR analysis showed that the production and secretion of matrixmetalloproteinase-2 and matrixmetalloproteinase-9 by HUVECs in culture were high when they remain as individual cells and significantly decreased during later stages of culture when cells developed cell-cell contact and tubular network-like structure. As MMPs decreased there was significant upregulation of VE-cadherin in cells undergoing angiogenic transition. Investigations to understand the signaling pathways downstream of VE-cadherin showed a relatively high level of β-catenin in the nucleus of endothelial cells in culture during initial stages and decrease in its levels in the nucleus, associated with an increase in the cytosol during later stages of culture. The distribution of β-catenin was found to be regulated by Tyr/Ser phosphorylation status of this protein. Cell-cell contact dependent downregulation of MMPs during angiogenesis was also observed in experiments using proangiogenic substances which caused a rapid rate of downregulation of MMP-2 and MMP-9 and absence of downregulation of MMPs when treated with anti-angiogenic agents.
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Affiliation(s)
- Manikantan S Kiran
- Department of Biochemistry, University of Kerala, Thiruvananthapuram, Kerala-695581, India.
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18
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Zhang K, Lu J, Mori T, Smith-Powell L, Synold TW, Chen S, Wen W. Baicalin increases VEGF expression and angiogenesis by activating the ERR{alpha}/PGC-1{alpha} pathway. Cardiovasc Res 2011; 89:426-35. [PMID: 20851810 PMCID: PMC3020130 DOI: 10.1093/cvr/cvq296] [Citation(s) in RCA: 71] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/18/2009] [Revised: 08/17/2010] [Accepted: 09/07/2010] [Indexed: 12/26/2022] Open
Abstract
AIMS Baicalin is the major component found in Scutellaria baicalensis root, a widely used herb in traditional Chinese medicine. Although it has been used for thousands of years to treat stroke, the mechanisms of action of S. baicalensis have not been clearly elucidated. In this report, we studied the modulation of angiogenesis as one possible mechanism by investigating the effects of these agents on expression of vascular endothelial growth factor (VEGF), a critical factor for angiogenesis. METHODS AND RESULTS The effects of baicalin and an extract of S. baicalensis on VEGF expression were tested in several cell lines. Both agents induced VEGF expression in all cells without increasing expression of hypoxia-inducible factor-1α (HIF-1α). The expression of reporter genes was also activated under the control of the VEGF promoter containing either a functional or a defective HIF response element (HRE). Only minimal effects were observed on reporter activation under the HRE promoter. Instead, both agents significantly induced oestrogen-related receptor (ERRα) expression as well as the activity of reporter genes under the control of ERRα-binding element. Their ability to induce VEGF expression was suppressed once ERRα expression was knocked down by siRNA or ERRα-binding sites were deleted in the VEGF promoter. We also found that both agents stimulated cell migration and vessel sprout formation from the aorta. CONCLUSION Our results implicate baicalin and S. baicalensis in angiogenesis by inducing VEGF expression through the activation of the ERRα pathway. These data may facilitate a better understanding of the potential health benefits of these agents in the treatment of cardiovascular diseases.
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MESH Headings
- Angiogenesis Inducing Agents/pharmacology
- Animals
- Aorta, Thoracic/drug effects
- Aorta, Thoracic/embryology
- Binding Sites
- Cell Line, Tumor
- Cell Movement/drug effects
- Cells, Cultured
- Chick Embryo
- Dose-Response Relationship, Drug
- Endothelial Cells/drug effects
- Endothelial Cells/metabolism
- Flavonoids/pharmacology
- Genes, Reporter
- Heat-Shock Proteins/drug effects
- Heat-Shock Proteins/metabolism
- Humans
- Hypoxia-Inducible Factor 1, alpha Subunit/metabolism
- Neovascularization, Physiologic/drug effects
- Peroxisome Proliferator-Activated Receptor Gamma Coactivator 1-alpha
- Plant Extracts/pharmacology
- Plant Roots
- Promoter Regions, Genetic/drug effects
- RNA Interference
- Receptors, Estrogen/drug effects
- Receptors, Estrogen/genetics
- Receptors, Estrogen/metabolism
- Scutellaria baicalensis
- Signal Transduction/drug effects
- Tissue Culture Techniques
- Transcription Factors/drug effects
- Transcription Factors/metabolism
- Transcription, Genetic/drug effects
- Transfection
- Up-Regulation
- Vascular Endothelial Growth Factor A/genetics
- Vascular Endothelial Growth Factor A/metabolism
- ERRalpha Estrogen-Related Receptor
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Affiliation(s)
- Keqiang Zhang
- Department of Molecular Medicine, Beckman Research Institute of the City of Hope, 1500 East Duarte Road, Duarte, CA 91010, USA
- Department of Molecular Pharmacology, Beckman Research Institute of the City of Hope, Duarte, CA 91010, USA
| | - Jianming Lu
- Department of Molecular Medicine, Beckman Research Institute of the City of Hope, 1500 East Duarte Road, Duarte, CA 91010, USA
| | - Taisuke Mori
- Division of Tumor Cell Biology, Beckman Research Institute of the City of Hope, Duarte, CA 91010, USA
| | - Leslie Smith-Powell
- Department of Molecular Pharmacology, Beckman Research Institute of the City of Hope, Duarte, CA 91010, USA
| | - Timothy W. Synold
- Department of Molecular Pharmacology, Beckman Research Institute of the City of Hope, Duarte, CA 91010, USA
| | - Shiuan Chen
- Division of Tumor Cell Biology, Beckman Research Institute of the City of Hope, Duarte, CA 91010, USA
| | - Wei Wen
- Department of Molecular Medicine, Beckman Research Institute of the City of Hope, 1500 East Duarte Road, Duarte, CA 91010, USA
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19
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Devi MS, Sudhakaran PR. Differential modulation of angiogenesis by advanced glycation end products. Exp Biol Med (Maywood) 2011; 236:52-61. [DOI: 10.1258/ebm.2010.010087] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Divergent angiogenic responses occur in different organs in a diabetic state. Many of the pathological effects were mediated by the advanced glycation end products (AGEs) of non-enzymatically glycated molecules. Investigations were carried out using different angiogenic model systems to examine whether the angiogenic response to AGEs is influenced by the cellular microenvironment. AGE-albumin increased angiogenesis in chick chorioallantoic membrane (CAM). It also increased sprouting in rat aortic rings and the expression of angiogenic markers CD31 and E-selectin and the angiogenic growth factor, vascular endothelial growth factor (VEGF) in human umbilical vein endothelial cells (HUVECs) in culture, suggesting a proangiogenic effect. But in a serum-supplemented condition, AGE-albumin inhibited aortic sprouting and expression of angiogenic markers and VEGF production by HUVECs, suggesting an antiangiogenic effect in the presence of serum. Blocking of the AGE effect by the antioxidants, N-acetyl cysteine and ascorbic acid, suggested that the AGE effect involved oxidant stress. Reversal of the AGE effect by LY 294 002, an inhibitor of the Akt pathway and increased phosphorylation of Akt in cells maintained in serum-free medium, suggested the involvement of the Akt pathway in mediating the AGE effect; such an effect was absent in a serum-supplemented condition. These opposing effects of AGE-albumin on angiogenesis in the presence and absence of serum suggested that the AGE accumulated in a hyperglycemic condition can affect angiogenesis depending on the microenvironment of the cells.
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Affiliation(s)
- Manju S Devi
- Department of Biochemistry, University of Kerala, Kariavattom, Thiruvananthapuram, Kerala 695 581, India
| | - Perumana R Sudhakaran
- Department of Biochemistry, University of Kerala, Kariavattom, Thiruvananthapuram, Kerala 695 581, India
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20
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De Angel RE, Smith SM, Glickman RD, Perkins SN, Hursting SD. Antitumor effects of ursolic acid in a mouse model of postmenopausal breast cancer. Nutr Cancer 2010; 62:1074-86. [PMID: 21058195 DOI: 10.1080/01635581.2010.492092] [Citation(s) in RCA: 72] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
Over the past two decades, bioactive natural compounds have been shown to be a plausible adjunct to the treatment of breast cancer, the second leading cause of cancer death among American women. This study was designed to investigate the effects of ursolic acid (UA), a pentacyclic triterpene found in many foods and herbs, in a model of postmenopausal breast cancer. Ovariectomized C57BL/6 mice (n = 40) were randomized to receive control diet (AIN-93G) or diet supplemented with UA at 1 of 3 doses (wt/wt): 0.05%, 0.10%, or 0.25% (≈54, 106, or 266 mg/kg body weight/day, respectively). After 3 wk, syngeneic MMTV-Wnt-1 mammary tumor cells were injected in the mammary fat pad, and mice continued on their respective diets for 5 more wk. All UA doses decreased tumor cell proliferation, as assessed by Ki67 immunostaining; nevertheless, UA at 0.10% was most effective in inhibiting tumor take and decreasing tumor final tumor size. Modulation of Akt/mTOR signaling and induction of apoptosis appeared to mediate these effects on tumor growth. UA potently disrupted cell cycle progression and induced necrosis in a clonal MMTV-Wnt-1 mammary tumor cell line in vitro. This study supports the potential of UA as an antitumorigenic agent.
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Sumiyoshi M, Kimura Y. Effects of a turmeric extract (Curcuma longa) on chronic ultraviolet B irradiation-induced skin damage in melanin-possessing hairless mice. PHYTOMEDICINE : INTERNATIONAL JOURNAL OF PHYTOTHERAPY AND PHYTOPHARMACOLOGY 2009; 16:1137-1143. [PMID: 19577913 DOI: 10.1016/j.phymed.2009.06.003] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/05/2008] [Revised: 05/12/2009] [Accepted: 06/02/2009] [Indexed: 05/28/2023]
Abstract
Turmeric (the rhizomes of Curcuma longa L., Zingiberacease) is widely used as a dietary pigment and spice, and has been traditionally used for the treatment of inflammation, skin wounds and hepatic disorders in Ayurvedic, Unani and Chinese medicine. Although the topical application or oral administration of turmeric is used to improve skin trouble, there is no evidence to support this effect. The aim of this study was to clarify whether turmeric prevents chronic ultraviolet B (UVB)-irradiated skin damage. We examined the effects of a turmeric extract on skin damage including changes in skin thickness and elasticity, pigmentation and wrinkling caused by long-term, low-dose ultraviolet B irradiation in melanin-possessing hairless mice. The extract (at 300 or 1000 mg/kg, twice daily) prevented an increase in skin thickness and a reduction in skin elasticity induced by chronic UVB exposure. It also prevented the formation of wrinkles and melanin (at 1000 mg/kg, twice daily) as well as increases in the diameter and length of skin blood vessels and in the expression of matrix metalloproteinase-2 (MMP-2). Prevention of UVB-induced skin aging by turmeric may be due to the inhibition of increases in MMP-2 expression caused by chronic irradiation.
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Affiliation(s)
- Maho Sumiyoshi
- Division of Functional Histology, Department of Functional Biomedicine, Graduate School of Medicine, Ehime University, Toon City, Ehime 791-0295, Japan
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22
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Kiran MS, Viji RI, Sameer Kumar VB, Sudhakaran PR. Modulation of angiogenic factors by ursolic acid. Biochem Biophys Res Commun 2008; 371:556-60. [PMID: 18448068 DOI: 10.1016/j.bbrc.2008.04.108] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2008] [Accepted: 04/21/2008] [Indexed: 10/22/2022]
Abstract
Investigations were carried out to understand the molecular basis of the effect of ursolic acid on angiogenesis by analysing its effects on the expression of modulators of angiogenesis by HUVECs in culture. Treatment with ursolic acid increased the expression of adhesion molecules such as E-selectin, CD-31 and I-CAM, upregulated angiogenic growth factors such as VEGF and FGF-2 and their receptors and caused increase in the ratio of PGE(2) to PGD(2). Reversal of the effect of ursolic acid by inhibition of PI3K-Akt pathway and increase in the level of phospho Akt suggest that the ursolic acid effect is mediated through PI3K-Akt pathway.
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Affiliation(s)
- M S Kiran
- Department of Biochemistry, University of Kerala, Thiruvananthapuram, Kerala 695 581, India.
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