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He H, Xu L, Sun R, Zhang Y, Huang Y, Chen Z, Li P, Yang R, Xiao G. An orthogonal and reactivity-based one-pot glycosylation strategy for both glycan and nucleoside synthesis: access to TMG-chitotriomycin, lipochitooligosaccharides and capuramycin. Chem Sci 2021; 12:5143-5151. [PMID: 34163751 PMCID: PMC8179548 DOI: 10.1039/d0sc06815b] [Citation(s) in RCA: 25] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2020] [Accepted: 02/23/2021] [Indexed: 12/17/2022] Open
Abstract
Both glycans (O-glycosides) and nucleosides (N-glycosides) play important roles in numerous biological processes. Chemical synthesis is a reliable and effective means to solve the attainability issues of these essential biomolecules. However, due to the stereo- and regiochemical issues during glycan assembly, together with problems including the poor solubility and nucleophilicity of nucleobases in nucleoside synthesis, the development of one-pot glycosylation strategies toward efficient synthesis of both glycans and nucleosides remains poor and challenging. Here, we report the first orthogonal and reactivity-based one-pot glycosylation strategy suitable for both glycan and nucleoside synthesis on the basis of glycosyl ortho-(1-phenylvinyl)benzoates. This one-pot glycosylation strategy not only inherits the advantages including no aglycon transfers, no undesired interference of departing species, and no unpleasant odors associated with the previously developed orthogonal one-pot glycosylation strategy based on glycosyl ortho-alkynylbenzoates, but also highly expands the scope (glycans and nucleosides) and increases the number of leaving groups that could be employed for the multistep one-pot synthesis (up to the formation of four different glycosidic bonds). In particular, the current one-pot glycosylation strategy is successfully applied to the total synthesis of a promising tuberculosis drug lead capuramycin and the divergent and formal synthesis of TMG-chitotriomycin with potent and specific inhibition activities toward β-N-acetylglucosaminidases and important endosymbiotic lipochitooligosaccharides including the Nod factor and the Myc factor, which represents one of the most efficient and straightforward synthetic routes toward these biologically salient molecules.
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Affiliation(s)
- Haiqing He
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, University of Chinese Academy of Sciences, Chinese Academy of Sciences Kunming 650201 China
| | - Lili Xu
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, University of Chinese Academy of Sciences, Chinese Academy of Sciences Kunming 650201 China
| | - Roujing Sun
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, University of Chinese Academy of Sciences, Chinese Academy of Sciences Kunming 650201 China
| | - Yunqin Zhang
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, University of Chinese Academy of Sciences, Chinese Academy of Sciences Kunming 650201 China
| | - Yingying Huang
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, University of Chinese Academy of Sciences, Chinese Academy of Sciences Kunming 650201 China
| | - Zixi Chen
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, University of Chinese Academy of Sciences, Chinese Academy of Sciences Kunming 650201 China
| | - Penghua Li
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, University of Chinese Academy of Sciences, Chinese Academy of Sciences Kunming 650201 China
| | - Rui Yang
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, University of Chinese Academy of Sciences, Chinese Academy of Sciences Kunming 650201 China
| | - Guozhi Xiao
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, University of Chinese Academy of Sciences, Chinese Academy of Sciences Kunming 650201 China
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2
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Debreli Coskun M, Sudha T, Bharali DJ, Celikler S, Davis PJ, Mousa SA. αvβ3 Integrin Antagonists Enhance Chemotherapy Response in an Orthotopic Pancreatic Cancer Model. Front Pharmacol 2020; 11:95. [PMID: 32174830 PMCID: PMC7056702 DOI: 10.3389/fphar.2020.00095] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2019] [Accepted: 01/27/2020] [Indexed: 12/19/2022] Open
Abstract
Pancreatic cancer decreases survival time and quality of life because of drug resistance and peripheral neuropathy during conventional treatment. This study was undertaken to investigate whether αvβ3 integrin receptor antagonist compounds NDAT and XT199 can suppress the development of cisplatin resistance and cisplatin-induced peripheral neuropathy in an orthotopic pancreatic SUIT2-luc cancer cell mouse model. Anticancer effects of these compounds and their combination with cisplatin were assessed in this tumor mouse model with bioluminescent signaling and histopathology, and a cytokine assay was used to examine expression of inflammatory cytokines IL-1β, IL-6, IL-10, and TNF-α from plasma samples. To determine the neuroprotective effects of the compounds on cisplatin-induced peripheral neuropathy, behavioral hind-limb posture of the mice was evaluated. The combination therapy of NDAT or XT199 with cisplatin elicited greater inhibition of tumor growth and increased tumor necrosis compared to cisplatin alone. NDAT and XT199 in combination with cisplatin significantly decreased expression of pro-inflammatory cytokines IL-1β, IL-6, and TNF-α and significantly increased expression of anti-inflammatory cytokine IL-10 in comparison to cisplatin alone. Cisplatin-treated groups showed stocking-glove hind-limb posture, whereas NDAT and XT199 with cisplatin-treated groups displayed normal hind-limb posture. Results clearly suggest that NDAT and XT199 treatment with cisplatin that inactivates NF-κB may contribute to increased antitumor and anti-inflammatory efficacy as well as alleviate cisplatin-mediated loss of motor function in this pancreatic tumor mouse model.
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Affiliation(s)
- Melis Debreli Coskun
- Pharmaceutical Research Institute, Albany College of Pharmacy and Health Sciences, Rensselaer, NY, United States.,Department of Biology, Faculty of Arts and Sciences, Uludag University, Bursa, Turkey
| | - Thangirala Sudha
- Pharmaceutical Research Institute, Albany College of Pharmacy and Health Sciences, Rensselaer, NY, United States
| | - Dhruba J Bharali
- Pharmaceutical Research Institute, Albany College of Pharmacy and Health Sciences, Rensselaer, NY, United States
| | - Serap Celikler
- Department of Biology, Faculty of Arts and Sciences, Uludag University, Bursa, Turkey
| | - Paul J Davis
- Pharmaceutical Research Institute, Albany College of Pharmacy and Health Sciences, Rensselaer, NY, United States.,Department of Medicine, Albany Medical College, Albany, NY, United States
| | - Shaker A Mousa
- Pharmaceutical Research Institute, Albany College of Pharmacy and Health Sciences, Rensselaer, NY, United States
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3
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Li P, He H, Zhang Y, Yang R, Xu L, Chen Z, Huang Y, Bao L, Xiao G. Glycosyl ortho-(1-phenylvinyl)benzoates versatile glycosyl donors for highly efficient synthesis of both O-glycosides and nucleosides. Nat Commun 2020; 11:405. [PMID: 31964883 PMCID: PMC6972911 DOI: 10.1038/s41467-020-14295-z] [Citation(s) in RCA: 41] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2019] [Accepted: 12/19/2019] [Indexed: 12/11/2022] Open
Abstract
Both of O-glycosides and nucleosides are important biomolecules with crucial rules in numerous biological processes. Chemical synthesis is an efficient and scalable method to produce well-defined and pure carbohydrate-containing molecules for deciphering their functions and developing therapeutic agents. However, the development of glycosylation methods for efficient synthesis of both O-glycosides and nucleosides is one of the long-standing challenges in chemistry. Here, we report a highly efficient and versatile glycosylation method for efficient synthesis of both O-glycosides and nucleosides, which uses glycosyl ortho-(1-phenylvinyl)benzoates as donors. This glycosylation protocol enjoys the various features, including readily prepared and stable donors, cheap and readily available promoters, mild reaction conditions, good to excellent yields, and broad substrate scopes. In particular, the applications of the current glycosylation protocol are demonstrated by one-pot synthesis of several bioactive oligosaccharides and highly efficient synthesis of nucleosides drugs capecitabine, galocitabine and doxifluridine.
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Affiliation(s)
- Penghua Li
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, University of Chinese Academy of Sciences, Chinese Academy of Sciences, Kunming, 650201, China
- School of Chemical Science and Technology, Yunnan University, Kunming, 650091, China
| | - Haiqing He
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, University of Chinese Academy of Sciences, Chinese Academy of Sciences, Kunming, 650201, China
| | - Yunqin Zhang
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, University of Chinese Academy of Sciences, Chinese Academy of Sciences, Kunming, 650201, China
| | - Rui Yang
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, University of Chinese Academy of Sciences, Chinese Academy of Sciences, Kunming, 650201, China
| | - Lili Xu
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, University of Chinese Academy of Sciences, Chinese Academy of Sciences, Kunming, 650201, China
| | - Zixi Chen
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, University of Chinese Academy of Sciences, Chinese Academy of Sciences, Kunming, 650201, China
| | - Yingying Huang
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, University of Chinese Academy of Sciences, Chinese Academy of Sciences, Kunming, 650201, China
| | - Limei Bao
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, University of Chinese Academy of Sciences, Chinese Academy of Sciences, Kunming, 650201, China
| | - Guozhi Xiao
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, University of Chinese Academy of Sciences, Chinese Academy of Sciences, Kunming, 650201, China.
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4
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Zhang Y, Xiang G, He S, Hu Y, Liu Y, Xu L, Xiao G. Orthogonal One-Pot Synthesis of Oligosaccharides Based on Glycosyl ortho-Alkynylbenzoates. Org Lett 2019; 21:2335-2339. [PMID: 30869522 DOI: 10.1021/acs.orglett.9b00617] [Citation(s) in RCA: 30] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
One of the most popular one-pot glycosylation strategies is orthogonal one-pot synthesis, which was mainly based on thioglycosides. Despite its successful application, shortcomings of thioglycosides including aglycon transfers, interference of departing species and unpleasant odor restrict its application scope. Herein, we report a new and efficient orthogonal one-pot synthesis of oligosaccahrides based on glycosyl ortho-alkynylbenzoate, which solves the issues of thioglycoside-based orthogonal one-pot synthesis. Over a dozen of oligosaccharides have been efficiently synthesized by this method.
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Affiliation(s)
- Yunqin Zhang
- State Key Laboratory of Phytochemistry and Plant Resources in West China , Kunming Institute of Botany, University of Chinese Academy of Sciences, Chinese Academy of Sciences , Kunming 650201 , China
| | - Guisheng Xiang
- State Key Laboratory of Phytochemistry and Plant Resources in West China , Kunming Institute of Botany, University of Chinese Academy of Sciences, Chinese Academy of Sciences , Kunming 650201 , China
| | - Shaojun He
- State Key Laboratory of Phytochemistry and Plant Resources in West China , Kunming Institute of Botany, University of Chinese Academy of Sciences, Chinese Academy of Sciences , Kunming 650201 , China
| | - Yikao Hu
- State Key Laboratory of Phytochemistry and Plant Resources in West China , Kunming Institute of Botany, University of Chinese Academy of Sciences, Chinese Academy of Sciences , Kunming 650201 , China
| | - Yanjun Liu
- State Key Laboratory of Phytochemistry and Plant Resources in West China , Kunming Institute of Botany, University of Chinese Academy of Sciences, Chinese Academy of Sciences , Kunming 650201 , China
| | - Lili Xu
- State Key Laboratory of Phytochemistry and Plant Resources in West China , Kunming Institute of Botany, University of Chinese Academy of Sciences, Chinese Academy of Sciences , Kunming 650201 , China
| | - Guozhi Xiao
- State Key Laboratory of Phytochemistry and Plant Resources in West China , Kunming Institute of Botany, University of Chinese Academy of Sciences, Chinese Academy of Sciences , Kunming 650201 , China
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5
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Wang HY, Simmons CJ, Blaszczyk SA, Balzer PG, Luo R, Duan X, Tang W. Isoquinoline-1-Carboxylate as a Traceless Leaving Group for Chelation-Assisted Glycosylation under Mild and Neutral Reaction Conditions. Angew Chem Int Ed Engl 2017; 56:15698-15702. [DOI: 10.1002/anie.201708920] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2017] [Revised: 10/15/2017] [Indexed: 01/19/2023]
Affiliation(s)
- Hao-Yuan Wang
- Pharmaceutical Sciences Division; School of Pharmacy; University of Wisconsin-Madison; 777 Highland Avenue Madison WI 53705 USA
| | - Christopher J. Simmons
- Department of Chemistry; University of Wisconsin-Madison; 1101 University Avenue Madison WI 53706 USA
| | - Stephanie A. Blaszczyk
- Department of Chemistry; University of Wisconsin-Madison; 1101 University Avenue Madison WI 53706 USA
| | - Paul G. Balzer
- Pharmaceutical Sciences Division; School of Pharmacy; University of Wisconsin-Madison; 777 Highland Avenue Madison WI 53705 USA
| | - Renshi Luo
- Pharmaceutical Sciences Division; School of Pharmacy; University of Wisconsin-Madison; 777 Highland Avenue Madison WI 53705 USA
| | - Xiyan Duan
- Pharmaceutical Sciences Division; School of Pharmacy; University of Wisconsin-Madison; 777 Highland Avenue Madison WI 53705 USA
| | - Weiping Tang
- Pharmaceutical Sciences Division; School of Pharmacy; University of Wisconsin-Madison; 777 Highland Avenue Madison WI 53705 USA
- Department of Chemistry; University of Wisconsin-Madison; 1101 University Avenue Madison WI 53706 USA
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6
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Wang HY, Simmons CJ, Blaszczyk SA, Balzer PG, Luo R, Duan X, Tang W. Isoquinoline-1-Carboxylate as a Traceless Leaving Group for Chelation-Assisted Glycosylation under Mild and Neutral Reaction Conditions. Angew Chem Int Ed Engl 2017. [DOI: 10.1002/ange.201708920] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Hao-Yuan Wang
- Pharmaceutical Sciences Division; School of Pharmacy; University of Wisconsin-Madison; 777 Highland Avenue Madison WI 53705 USA
| | - Christopher J. Simmons
- Department of Chemistry; University of Wisconsin-Madison; 1101 University Avenue Madison WI 53706 USA
| | - Stephanie A. Blaszczyk
- Department of Chemistry; University of Wisconsin-Madison; 1101 University Avenue Madison WI 53706 USA
| | - Paul G. Balzer
- Pharmaceutical Sciences Division; School of Pharmacy; University of Wisconsin-Madison; 777 Highland Avenue Madison WI 53705 USA
| | - Renshi Luo
- Pharmaceutical Sciences Division; School of Pharmacy; University of Wisconsin-Madison; 777 Highland Avenue Madison WI 53705 USA
| | - Xiyan Duan
- Pharmaceutical Sciences Division; School of Pharmacy; University of Wisconsin-Madison; 777 Highland Avenue Madison WI 53705 USA
| | - Weiping Tang
- Pharmaceutical Sciences Division; School of Pharmacy; University of Wisconsin-Madison; 777 Highland Avenue Madison WI 53705 USA
- Department of Chemistry; University of Wisconsin-Madison; 1101 University Avenue Madison WI 53706 USA
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7
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Park J, Jeong JH, Al-Hilal TA, Kim JY, Byun Y. Size Controlled Heparin Fragment–Deoxycholic Acid Conjugate Showed Anticancer Property by Inhibiting VEGF165. Bioconjug Chem 2015; 26:932-40. [DOI: 10.1021/acs.bioconjchem.5b00133] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
| | - Jee-Heon Jeong
- College
of Pharmacy, Yeungnam University, Gyeongsan 712-749, Gyeongbuk South Korea
| | - Taslim A. Al-Hilal
- Center
for Theragnosis, Biomedical Research Institute, Korea Institute of Science and Technology, Seoul 136-791, South Korea
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8
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Lean QY, Patel RP, Stewart N, Sohal SS, Gueven N. Identification of pro- and anti-proliferative oligosaccharides of heparins. Integr Biol (Camb) 2014; 6:90-9. [PMID: 24310794 DOI: 10.1039/c3ib40206a] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Heparins, unfractionated heparin (UFH) and low molecular weight heparins (LMWHs), are heterogeneous mixtures of anticoagulant and non-anticoagulant oligosaccharides. In addition to their well-known anticoagulant effect, heparins have shown to mediate a wide range of non-anticoagulant effects, including the modulation of cellular growth. However, contradictory results have been reported with regard to their effects on cellular proliferation, with some studies suggesting anti-proliferative while others indicating pro-proliferative effects. This study investigated the proliferation of human colonic epithelial cancer cells in the presence of UFH and LMWHs (enoxaparin and dalteparin). In our experimental setting, all heparins caused a dose-dependent reduction in cellular growth, which correlated well with the induction of cell cycle arrest in the G₁ phase and which was not associated with significant changes in cell viability. The effects on cellular proliferation of 14 different oligosaccharides of enoxaparin obtained through ion-exchange chromatography were also assessed. Surprisingly, only two oligosaccharides showed distinctive anti-proliferative effects while the majority of oligosaccharides actually stimulated proliferation. Interestingly, the smallest oligosaccharide devoid of any anticoagulant activity showed the strongest anti-proliferative effect. Notably, heparins are currently standardised only according to their anticoagulant activity but not based on other non-anticoagulant properties. Our results indicate that slight differences in the composition of heparins' non-anticoagulant oligosaccharides, due to different origins of material and preparation methods, have the potential to cause diverse effects and highlight the need for additional characterisation of non-anticoagulant activities.
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Affiliation(s)
- Qi Ying Lean
- School of Pharmacy, University of Tasmania, Hobart, TAS, Australia.
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9
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Sudha T, Yalcin M, Lin HY, Elmetwally AM, Nazeer T, Arumugam T, Phillips P, Mousa SA. Suppression of pancreatic cancer by sulfated non-anticoagulant low molecular weight heparin. Cancer Lett 2014; 350:25-33. [PMID: 24769074 DOI: 10.1016/j.canlet.2014.04.016] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2013] [Revised: 04/14/2014] [Accepted: 04/16/2014] [Indexed: 11/17/2022]
Abstract
Sulfated non-anticoagulant heparins (S-NACHs) might be preferred for potential clinical use in cancer patients without affecting hemostasis as compared to low molecular weight heparins (LMWHs). We investigated anti-tumor effects, anti-angiogenesis effects, and mechanisms of S-NACH in a mouse model of pancreatic cancer as compared to the LMWH tinzaparin. S-NACH or tinzaparin with or without gemcitabine were administered, and tumor luminescent signal intensity, tumor weight, and histopathology were assessed at the termination of the study. S-NACH and LMWH efficiently inhibited tumor growth and metastasis, without any observed bleeding events with S-NACH as compared to tinzaparin. S-NACH distinctly increased tumor necrosis and enhanced gemcitabine response in the mouse pancreatic cancer models. These data suggest the potential implication of S-NACH as a neoadjuvant in pancreatic cancer.
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Affiliation(s)
- Thangirala Sudha
- The Pharmaceutical Research Institute, Albany College of Pharmacy and Health Sciences, Rensselaer, NY, USA
| | - Murat Yalcin
- The Pharmaceutical Research Institute, Albany College of Pharmacy and Health Sciences, Rensselaer, NY, USA; Department of Physiology, Veterinary Medicine Faculty, Uludag University, Gorukle, Bursa, Turkey
| | - Hung-Yun Lin
- Institute of Cancer Biology and Drug Discovery, Taipei Medical University, Taipei, Taiwan
| | - Ahmed M Elmetwally
- The Pharmaceutical Research Institute, Albany College of Pharmacy and Health Sciences, Rensselaer, NY, USA
| | - Tipu Nazeer
- Department of Pathology, Albany Medical College, Albany, NY, USA
| | - Thiruvengadam Arumugam
- Department of Cancer Biology, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Patricia Phillips
- The Pharmaceutical Research Institute, Albany College of Pharmacy and Health Sciences, Rensselaer, NY, USA
| | - Shaker A Mousa
- The Pharmaceutical Research Institute, Albany College of Pharmacy and Health Sciences, Rensselaer, NY, USA.
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10
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Jeong KW, Jeong MC, Jin B, Kim Y. Relationship between Structural Flexibility and Function in the C-Terminal Region of the Heparin-Binding Domain of VEGF165. Biochemistry 2013; 52:8823-32. [DOI: 10.1021/bi4011682] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Ki-Woong Jeong
- Department of Bioscience
and Biotechnology and Bio/Molecular Informatics
Center, Institute of KU Biotechnology, Konkuk University, Seoul 143-701, Korea
| | - Min-Cheol Jeong
- Department of Bioscience
and Biotechnology and Bio/Molecular Informatics
Center, Institute of KU Biotechnology, Konkuk University, Seoul 143-701, Korea
| | - Bonghwan Jin
- Department of Bioscience
and Biotechnology and Bio/Molecular Informatics
Center, Institute of KU Biotechnology, Konkuk University, Seoul 143-701, Korea
| | - Yangmee Kim
- Department of Bioscience
and Biotechnology and Bio/Molecular Informatics
Center, Institute of KU Biotechnology, Konkuk University, Seoul 143-701, Korea
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11
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Gesslbauer B, Theuer M, Schweiger D, Adage T, Kungl AJ. New targets for glycosaminoglycans and glycosaminoglycans as novel targets. Expert Rev Proteomics 2013; 10:77-95. [PMID: 23414361 DOI: 10.1586/epr.12.75] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Biological functions of a variety of proteins are mediated via their interaction with glycosaminoglycans (GAGs). The structural diversity within the wide GAG landscape provides individual interaction sites for a multitude of proteins involved in several pathophysiological processes. This 'GAG angle' of such proteins as well as their specific GAG ligands give rise to novel therapeutic concepts for drug development. Current glycomic technologies to elucidate the glycan structure-function relationships, methods to investigate the selectivity and specificity of glycan-protein interactions and existing therapeutic approaches to interfere with GAG-protein interactions are discussed.
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Affiliation(s)
- Bernd Gesslbauer
- ProtAffin Biotechnologie AG, Reininghausstrasse 13a, 8020 Graz, Austria
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12
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Fibrin and collagen differentially but synergistically regulate sprout angiogenesis of human dermal microvascular endothelial cells in 3-dimensional matrix. Int J Cell Biol 2013; 2013:231279. [PMID: 23737792 PMCID: PMC3657431 DOI: 10.1155/2013/231279] [Citation(s) in RCA: 65] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2013] [Revised: 03/27/2013] [Accepted: 04/10/2013] [Indexed: 01/29/2023] Open
Abstract
Angiogenesis is a highly regulated event involving complex, dynamic interactions between microvascular endothelial cells and extracellular matrix (ECM) proteins. Alteration of ECM composition and architecture is a hallmark feature of wound clot and tumor stroma. We previously reported that during angiogenesis, endothelial cell responses to growth factors are modulated by the compositional and mechanical properties of a surrounding three-dimensional (3D) extracellular matrix (ECM) that is dominated by either cross-linked fibrin or type I collagen. However, the role of 3D ECM in the regulation of angiogenesis associated with wound healing and tumor growth is not well defined. This study investigates the correlation of sprout angiogenesis and ECM microenvironment using in vivo and in vitro 3D angiogenesis models. It demonstrates that fibrin and type I collagen 3D matrices differentially but synergistically regulate sprout angiogenesis. Thus blocking both integrin alpha v beta 3 and integrin alpha 2 beta 1 might be a novel strategy to synergistically block sprout angiogenesis in solid tumors.
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13
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Abstract
Explorations of the therapeutic potential of heparin mimetics, anionic compounds that are analogues of glycosaminoglycans (GAGs), have gone hand-in-hand with the emergence of understanding as to the role of GAGs in many essential biological processes. A myriad of structurally different heparin mimetics have been prepared and examined in many diverse applications. They range in complexity from heterogeneous polysaccharides that have been chemically sulphated to well-defined compounds, designed in part to mimic the natural ligand, but with binding specificity and potency increased by conjugation to non-carbohydrate pharmacophores. The maturity of the field is illustrated by the seven heparin mimetics that have achieved marketing approval and there are several more in late-stage clinical development. An overview of the structural determinants of heparin mimetics is presented together with an indication of their activities. The challenges in developing heparin mimetics as drugs, specificity and potential toxicity issues, are highlighted. Finally, the development path of three structurally very different mimetics, PI-88(®), GMI-1070 and RGTAs, each of which is in clinical trials, is described.
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14
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Binding affinities of vascular endothelial growth factor (VEGF) for heparin-derived oligosaccharides. Biosci Rep 2012; 32:71-81. [PMID: 21658003 DOI: 10.1042/bsr20110077] [Citation(s) in RCA: 92] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
Heparin and HS (heparan sulfate) exert their wide range of biological activities by interacting with extracellular protein ligands. Among these important protein ligands are various angiogenic growth factors and cytokines. HS binding to VEGF (vascular endothelial growth factor) regulates multiple aspects of vascular development and function through its specific interaction with HS. Many studies have focused on HS-derived or HS-mimicking structures for the characterization of VEGF165 interaction with HS. Using a heparinase 1-prepared small library of heparin-derived oligosaccharides ranging from hexasaccharide to octadecasaccharide, we systematically investigated the heparin-specific structural features required for VEGF binding. We report the apparent affinities for the association between the heparin-derived oligosaccharides with both VEGF165 and VEGF55, a peptide construct encompassing exclusively the heparin-binding domain of VEGF165. An octasaccharide was the minimum size of oligosaccharide within the library to efficiently bind to both forms of VEGF and a tetradecasaccharide displayed an effective binding affinity to VEGF165 comparable to unfractionated heparin. The range of relative apparent binding affinities among VEGF and the panel of heparin-derived oligosaccharides demonstrate that the VEGF binding affinity likely depends on the specific structural features of these oligosaccharides, including their degree of sulfation, sugar-ring stereochemistry and conformation. Notably, the unique 3-O-sulfo group found within the specific antithrombin binding site of heparin is not required for VEGF165 binding. These findings afford new insight into the inherent kinetics and affinities for VEGF association with heparin and heparin-derived oligosaccharides with key residue-specific modifications and may potentially benefit the future design of oligosaccharide-based anti-angiogenesis drugs.
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15
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Mousa SA. Comparative Pharmacodynamic Assessment of the Antiangiogenesis Activity of Heparin and Low-Molecular-Weight Heparin Fractions. Clin Appl Thromb Hemost 2012; 19:48-54. [DOI: 10.1177/1076029611436194] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Affiliation(s)
- Shaker A. Mousa
- The Pharmaceutical Research Institute at Albany College of Pharmacy and Health Sciences, Rensselaer, NY, USA
- College of Medicine, King Saud University, Riyadh, Saudi Arabia
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16
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Kemp MM, Kumar A, Mousa S, Dyskin E, Yalcin M, Ajayan P, Linhardt RJ, Mousa SA. Gold and silver nanoparticles conjugated with heparin derivative possess anti-angiogenesis properties. NANOTECHNOLOGY 2009; 20:455104. [PMID: 19822927 DOI: 10.1088/0957-4484/20/45/455104] [Citation(s) in RCA: 93] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
Silver and gold nanoparticles display unique physical and biological properties that have been extensively studied for biological and medical applications. Typically, gold and silver nanoparticles are prepared by chemical reductants that utilize excess toxic reactants, which need to be removed for biological purposes. We utilized a clean method involving a single synthetic step to prepare metal nanoparticles for evaluating potential effects on angiogenesis modulation. These nanoparticles were prepared by reducing silver nitrate and gold chloride with diaminopyridinyl (DAP)-derivatized heparin (HP) polysaccharides. Both gold and silver nanoparticles reduced with DAPHP exhibited effective inhibition of basic fibroblast growth factor (FGF-2)-induced angiogenesis, with an enhanced anti-angiogenesis efficacy with the conjugation to DAPHP (P<0.01) as compared to glucose conjugation. These results suggest that DAPHP-reduced silver nanoparticles and gold nanoparticles have potential in pathological angiogenesis accelerated disorders such as cancer and inflammatory diseases.
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Affiliation(s)
- Melissa M Kemp
- Department of Biology, Rensselaer Polytechnic Institute, Troy, NY 12180, USA
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Lau E, Margolis RU. Inhibitors of slit protein interactions with the heparan sulphate proteoglycan glypican-1: potential agents for the treatment of spinal cord injury. Clin Exp Pharmacol Physiol 2009; 37:417-21. [PMID: 19843094 DOI: 10.1111/j.1440-1681.2009.05318.x] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
1. The heparan sulphate proteoglycan glypican-1 is a major high-affinity ligand of the Slit proteins. 2. Messenger RNA for both Slit-2 and glypican-1 is strongly upregulated and coexpressed in the reactive astrocytes of injured adult brain, suggesting a possible function of Slit proteins and glypican-1 in the adult central nervous system as significant components of the inhibitory environment that prevents axonal regeneration after injury. 3. Based on the hypothesis that adverse effects on axonal regeneration may be due to a glypican-Slit complex or the retention of glypican-binding C-terminal proteolytic processing fragments of Slit at the injury site, we used ELISA to examine a number of small molecules and low molecular weight heparin analogues for their ability to inhibit glypican-Slit interactions. 4. Our studies have led to the identification of several potent inhibitors with a favourable therapeutic profile that can now be tested in a spinal cord injury model. Among the most promising of these are a low molecular weight heparin produced by periodate oxidation and having no significant anticoagulant activity, the chemically sulphonated yeast-derived phosphomannan PI-88 and a number of randomly derivatized water-soluble sulphated dextrans.
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Affiliation(s)
- Elizabeth Lau
- Department of Pharmacology, New York University Medical Center, New York, New York 10016, USA
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Oezyuerek Z, Franke K, Nitschke M, Schulze R, Simon F, Eichhorn KJ, Pompe T, Werner C, Voit B. Sulfated glyco-block copolymers with specific receptor and growth factor binding to support cell adhesion and proliferation. Biomaterials 2009; 30:1026-35. [DOI: 10.1016/j.biomaterials.2008.11.005] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2008] [Accepted: 11/11/2008] [Indexed: 11/28/2022]
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