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Sahoo RK, Gupta T, Batheja S, Goyal AK, Gupta U. Surface Engineered Dendrimers: A Potential Nanocarrier for the Effective Management of Glioblastoma Multiforme. Curr Drug Metab 2022; 23:708-722. [PMID: 35713127 DOI: 10.2174/1389200223666220616125524] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2022] [Revised: 04/25/2022] [Accepted: 05/18/2022] [Indexed: 01/05/2023]
Abstract
Gliomas are the most prevailing intracranial tumors, which account for approximately 36% of the primary brain tumors of glial cells. Glioblastoma multiforme (GBM) possesses a higher degree of malignancy among different gliomas. The blood-brain barrier (BBB) protects the brain against infections and toxic substances by preventing foreign molecules or unwanted cells from entering the brain parenchyma. Nano-carriers such as liposomes, nanoparticles, dendrimers, etc. boost the brain permeability of various anticancer drugs or other drugs. The favorable properties like small size, better solubility, and the modifiable surface of dendrimers have proven their broad applicability in the better management of GBM. However, in vitro and in vivo toxicities caused by dendrimers have been a significant concern. The presence of multiple functionalities on the surface of dendrimers enables the grafting of target ligand and/or therapeutic moieties. Surface engineering improves certain properties like targeting efficiency, pharmacokinetic profile, therapeutic effect, and toxicity reduction. This review will be focused on the role of different surface-modified dendrimers in the effective management of GBM.
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Affiliation(s)
- Rakesh Kumar Sahoo
- Department of Pharmacy, School of Chemical Sciences and Pharmacy, Central University of Rajasthan, Bandarsindri, Ajmer, Rajasthan 305817, India
| | - Tanisha Gupta
- Department of Pharmacy, School of Chemical Sciences and Pharmacy, Central University of Rajasthan, Bandarsindri, Ajmer, Rajasthan 305817, India
| | - Sanya Batheja
- Department of Pharmacy, School of Chemical Sciences and Pharmacy, Central University of Rajasthan, Bandarsindri, Ajmer, Rajasthan 305817, India
| | - Amit Kumar Goyal
- Department of Pharmacy, School of Chemical Sciences and Pharmacy, Central University of Rajasthan, Bandarsindri, Ajmer, Rajasthan 305817, India
| | - Umesh Gupta
- Department of Pharmacy, School of Chemical Sciences and Pharmacy, Central University of Rajasthan, Bandarsindri, Ajmer, Rajasthan 305817, India
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2
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Xu L, Zhou C, Wang F, Liu H, Dong G, Zhang S, Liu T. Functional drug carriers formed by RGD-modified β-CD-HPG for the delivery of docetaxel for targeted inhibition of nasopharyngeal carcinoma cells. RSC Adv 2022; 12:18004-18011. [PMID: 35765336 PMCID: PMC9204710 DOI: 10.1039/d2ra02301f] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2022] [Accepted: 05/26/2022] [Indexed: 02/05/2023] Open
Abstract
In this study, a drug delivery system was prepared by grafting the targeting molecule arginine-glycine-aspartic acid (RGD) onto hyperbranched polyglycerol (HPG)-modified β-cyclodextrin (β-CD-HPG) for the targeted inhibition of nasopharyngeal carcinoma (NPC) cells. The obtained β-CD-HPG-RGD with a relatively small size and low surface charge delivered docetaxel (Doc) effectively and displayed a targeting effect to human NPC HNE-1 cells, as confirmed by confocal laser scanning microscopy and flow cytometry. The in vitro drug release analysis exhibited the controlled drug release kinetics of the β-CD-HPG-RGD/Doc nanomedicine. β-CD-HPG-RGD/Doc effectively inhibited the proliferation of HNE-1 cells and promoted apoptosis. Moreover, its biocompatibility in vitro and in vivo was assessed. The results indicate that the β-CD-HPG-RGD/Doc nanomedicine has potential application in NPC targeting therapy.
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Affiliation(s)
- Lingling Xu
- Department of Otolaryngology-Head and Neck Surgery, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences Guangzhou Guangdong 510080 China
- The Second School of Clinical Medicine, Southern Medical University Guangzhou Guangdong 510515 China
| | - Chuan Zhou
- Department of Otolaryngology-Head and Neck Surgery, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences Guangzhou Guangdong 510080 China
- Shantou University Medical College Shantou 515063 PR China
| | - Fan Wang
- Key Laboratory of Biomaterials of Guangdong Higher Education Institutes, Department of Biomedical Engineering, Jinan University Guangzhou 510632 China
| | - Huiqin Liu
- Department of Otolaryngology-Head and Neck Surgery, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences Guangzhou Guangdong 510080 China
- Shantou University Medical College Shantou 515063 PR China
| | - Guangyuan Dong
- Department of Otolaryngology-Head and Neck Surgery, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences Guangzhou Guangdong 510080 China
- Shantou University Medical College Shantou 515063 PR China
| | - Siyi Zhang
- Department of Otolaryngology-Head and Neck Surgery, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences Guangzhou Guangdong 510080 China
- The Second School of Clinical Medicine, Southern Medical University Guangzhou Guangdong 510515 China
| | - Tao Liu
- Department of Otolaryngology-Head and Neck Surgery, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences Guangzhou Guangdong 510080 China
- The Second School of Clinical Medicine, Southern Medical University Guangzhou Guangdong 510515 China
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Waller J, DeStefano K, Chiu B, Jang I, Cole Y, Agyemang C, Miao T, Shah J, Martin C, Umair M. An update on nanoparticle usage in breast cancer imaging. NANO SELECT 2022. [DOI: 10.1002/nano.202100320] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023] Open
Affiliation(s)
- Joseph Waller
- Drexel University College of Medicine Philadelphia USA
| | | | | | | | - Yonesha Cole
- Drexel University College of Medicine Philadelphia USA
| | | | - Tyler Miao
- University of California Los Angeles USA
| | - Jaffer Shah
- Medical Research Center Kateb University Kabul Afghanistan
- New York State Department of Health New York USA
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Sheikh A, Md S, Kesharwani P. RGD engineered dendrimer nanotherapeutic as an emerging targeted approach in cancer therapy. J Control Release 2021; 340:221-242. [PMID: 34757195 DOI: 10.1016/j.jconrel.2021.10.028] [Citation(s) in RCA: 47] [Impact Index Per Article: 15.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2021] [Revised: 10/24/2021] [Accepted: 10/28/2021] [Indexed: 12/15/2022]
Abstract
A bird's eye view is now demanded in the area of cancer research to suppress the suffering of cancer patient and mediate the lack of treatment related to chemotherapy. Chemotherapy is always preferred over surgery or radiation therapy, but they never met the patient's demand of safe medication. Targeted therapy has now been in research that could hinder the unnecessary effect of drug on normal cells but could affect the tumor cells in much efficient manner. Angiogenesis is process involved in development of new blood vessel that nourishes tumor growth. Integrin receptors are over expressed on cancer cells that play vital role in angiogenesis for growth and metastasis of tumor cell. A delivery of RGD based peptide to integrin targeted site could help in its successful binding and liberation of drug in tumor vasculature. Dendrimers, in addition to its excellent pharmacokinetic properties also helps to carry targeting ligand to site of tumor by successfully conjugating with them. The aim of this review is to bring light upon the role of integrin in cancer progression, interaction of RGD to integrin receptor and more importantly the RGD-dendrimer based targeted therapy for the treatment of various cancers.
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Affiliation(s)
- Afsana Sheikh
- Department of Pharmaceutics, School of Pharmaceutical Education and Research, Jamia Hamdard, New Delhi 110062, India
| | - Shadab Md
- Department of Pharmaceutics, Faculty of Pharmacy, King Abdulaziz University, Jeddah 21589, Saudi Arabia; Center of Excellence for Drug Research & Pharmaceutical Industries, King Abdulaziz University, Jeddah 21589, Saudi Arabia
| | - Prashant Kesharwani
- Department of Pharmaceutics, School of Pharmaceutical Education and Research, Jamia Hamdard, New Delhi 110062, India.
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Berki TR, Martinelli J, Tei L, Willcock H, Butler SJ. Polymerizable Gd(iii) building blocks for the synthesis of high relaxivity macromolecular MRI contrast agents. Chem Sci 2021; 12:3999-4013. [PMID: 34163670 PMCID: PMC8179470 DOI: 10.1039/d0sc04750c] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2020] [Accepted: 01/22/2021] [Indexed: 12/26/2022] Open
Abstract
A new synthetic strategy for the preparation of macromolecular MRI contrast agents (CAs) is reported. Four gadolinium(iii) complexes bearing either one or two polymerizable methacrylamide groups were synthesized, serving as monomers or crosslinkers for the preparation of water-soluble, polymeric CAs using Reversible Addition-Fragmentation Chain Transfer (RAFT) polymerization. Using this approach, macromolecular CAs were synthesized with different architectures, including linear, hyperbranched polymers and gels. The relaxivities of the polymeric CAs were determined by NMR relaxometry, revealing an up to 5-fold increase in relaxivity (60 MHz, 310 K) for the linear polymers compared with the clinically used CA, Gd-DOTA. Moreover, hyperbranched polymers obtained from Gd(iii) crosslinkers, displayed even higher relaxivities up to 22.8 mM-1 s-1, approximately 8 times higher than that of Gd-DOTA (60 MHz, 310 K). A detailed NMRD study revealed that the enhanced relaxivities of the hyperbranched polymers were obtained by limiting the local motion of the crosslinked Gd(iii) chelate. The versatility of RAFT polymerization of Gd(iii) monomers and crosslinkers opens the doors to more advanced polymeric CAs capable of multimodal, bioresponsive or targeting properties.
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Affiliation(s)
- Thomas R Berki
- Department of Chemistry, Loughborough University Leicestershire LE11 3TU UK
- Department of Materials, Loughborough University Leicestershire LE11 3TU UK
| | - Jonathan Martinelli
- Department of Science and Technological Innovation, Università del Piemonte Orientale I15121 Alessandria Italy
| | - Lorenzo Tei
- Department of Science and Technological Innovation, Università del Piemonte Orientale I15121 Alessandria Italy
| | - Helen Willcock
- Department of Materials, Loughborough University Leicestershire LE11 3TU UK
| | - Stephen J Butler
- Department of Chemistry, Loughborough University Leicestershire LE11 3TU UK
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Rolando Alberto RF, Martiniano B, Saúl RH, Jazmín GM, Mara GS, Alan Rubén EP, Manuel Jonathan FV, Juan Vicente MM, José CB. In silico and in vivo studies of gp120-HIV-derived peptides in complex with G4-PAMAM dendrimers. RSC Adv 2020; 10:20414-20426. [PMID: 35517739 PMCID: PMC9054249 DOI: 10.1039/d0ra00840k] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2020] [Accepted: 05/04/2020] [Indexed: 12/20/2022] Open
Abstract
Novel synthetic vaccines as immunotherapy approaches for HIV are interesting strategies that imply big challenges as they increase the poor immunogenic properties of peptide epitopes and their structural damage from the physiological environment. In this work, we used fourth-generation polyamidoamine dendrimers (G4-PAMAM) to increase the immunoglobulin responses (in vivo) induced by two peptide epitopes (pPGT122: DIIGDIRQAH and pVRC03: DGGANNTSNETFR), both recognized by broadly neutralizing antibodies (bNAb) on gp120-HIV type 1. pPGT122 and pVRC03 were identified on the gp120 surface via recognition by bNAb by using X-ray diffraction-derived structures obtained from the Protein Data Bank. pPGT122 and pVRC03 were coupled to the G4-PAMAM molecule by ligand diffusion using molecular dynamics (LDMDS) simulations and their energetic values were calculated by using the MMGBSA approach. Additionally, docking and MD simulations showed the affinity of pPGT122 and pVRC03 for MHC-I/II. G4-PAMAM-peptide complexes were chemically characterized through MALDI-TOF-MS, LC-ESI-QTOF-MS, atomic force microscopy (AFM) and 1H NMR spectroscopy. Then, the G4-PAMAM-peptide complexes were assayed in vivo by intranasal administration in female BALB/cJ mouse groups, showing that both peptides were immunogenic systemically and in the mucous membrane (in nasal and vaginal washes) via increase in IgG and IgA, respectively. This demonstrated that G4-PAMAM can be used as a nanocarrier for immunogenic peptides.
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Affiliation(s)
- Rodríguez-Fonseca Rolando Alberto
- Laboratorio de Diseño y Desarrollo de Nuevos Fármacos e Innovación Biotécnológica (Laboratory for the Design and Development of New Drugs and Biotechnological Innovation), Escuela Superior de Medicina, Instituto Politécnico Nacional Plan de San Luis y Díaz Mirón Ciudad de México 11340 Mexico
| | - Bello Martiniano
- Laboratorio de Diseño y Desarrollo de Nuevos Fármacos e Innovación Biotécnológica (Laboratory for the Design and Development of New Drugs and Biotechnological Innovation), Escuela Superior de Medicina, Instituto Politécnico Nacional Plan de San Luis y Díaz Mirón Ciudad de México 11340 Mexico
| | - Rojas-Hernández Saúl
- Laboratorio de Inmunología Molecular, Escuela Superior de Medicina, Instituto Politécnico Nacional Plan de San Luis y Díaz Mirón, Ciudad de México 11340 Mexico
| | - García-Machorro Jazmín
- Laboratorio de Medicina de Conservación, Escuela Superior de Medicina, Instituto Politécnico Nacional Plan de San Luis y Díaz Mirón Ciudad de México 11340 Mexico
| | - Gutiérrez-Sánchez Mara
- Laboratorio de Inmunología Molecular, Escuela Superior de Medicina, Instituto Politécnico Nacional Plan de San Luis y Díaz Mirón, Ciudad de México 11340 Mexico
| | - Estrada-Pérez Alan Rubén
- Laboratorio de Diseño y Desarrollo de Nuevos Fármacos e Innovación Biotécnológica (Laboratory for the Design and Development of New Drugs and Biotechnological Innovation), Escuela Superior de Medicina, Instituto Politécnico Nacional Plan de San Luis y Díaz Mirón Ciudad de México 11340 Mexico
| | - Fragoso-Vázquez Manuel Jonathan
- Departamento de Química Orgánica, Escuela Nacional de Ciencias Biológicas. Instituto Politécnico Nacional Prolongación Carpio y Plan de Ayala s/n Ciudad de México 11340 Mexico
| | - Méndez-Méndez Juan Vicente
- Centro de Nanociencias y Micro y Nanotecnología. Instituto Politécnico Nacional México City, Mexico. Av. Luis Enrique Erro s/n, Nueva Industrial Vallejo 07738 Ciudad de México Mexico
| | - Correa-Basurto José
- Laboratorio de Diseño y Desarrollo de Nuevos Fármacos e Innovación Biotécnológica (Laboratory for the Design and Development of New Drugs and Biotechnological Innovation), Escuela Superior de Medicina, Instituto Politécnico Nacional Plan de San Luis y Díaz Mirón Ciudad de México 11340 Mexico
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Emerging Trends in Nanotheranostics. Nanobiomedicine (Rij) 2020. [DOI: 10.1007/978-981-32-9898-9_14] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022] Open
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8
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Vieira Gonzaga R, da Silva Santos S, da Silva JV, Campos Prieto D, Feliciano Savino D, Giarolla J, Igne Ferreira E. Targeting Groups Employed in Selective Dendrons and Dendrimers. Pharmaceutics 2018; 10:E219. [PMID: 30413047 PMCID: PMC6320891 DOI: 10.3390/pharmaceutics10040219] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2018] [Revised: 10/19/2018] [Accepted: 10/24/2018] [Indexed: 12/16/2022] Open
Abstract
The design of compounds with directed action to a defined organ or tissue is a very promising approach, since it can decrease considerably the toxicity of the drug/bioactive compound. For this reason, this kind of strategy has been greatly important in the scientific community. Dendrimers, on the other hand, comprise extremely organized macromolecules with many peripheral functionalities, stepwise controlled synthesis, and defined size. These nanocomposites present several biological applications, demonstrating their efficiency to act in the pharmaceutical field. Considering that, the main purpose of this review was describing the potential of dendrons and dendrimers as drug targeting, applying different targeting groups. This application has been demonstrated through interesting examples from the literature considering the last ten years of publications.
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Affiliation(s)
- Rodrigo Vieira Gonzaga
- Faculty of Pharmaceutical Sciences, University of Sao Paulo, Sao Paulo 05508-000, Brazil.
| | - Soraya da Silva Santos
- Faculty of Pharmaceutical Sciences, University of Sao Paulo, Sao Paulo 05508-000, Brazil.
| | - Joao Vitor da Silva
- Faculty of Pharmaceutical Sciences, University of Sao Paulo, Sao Paulo 05508-000, Brazil.
| | - Diego Campos Prieto
- Faculty of Pharmaceutical Sciences, University of Sao Paulo, Sao Paulo 05508-000, Brazil.
| | | | - Jeanine Giarolla
- Faculty of Pharmaceutical Sciences, University of Sao Paulo, Sao Paulo 05508-000, Brazil.
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Li J, Han Y, Lu Y, Song B, Zhao M, Hu H, Chen D. A novel disulfide bond-mediated cleavable RGD-modified PAMAM nanocomplex containing nuclear localization signal HMGB1 for enhancing gene transfection efficiency. Int J Nanomedicine 2018; 13:7135-7153. [PMID: 30464464 PMCID: PMC6228086 DOI: 10.2147/ijn.s182445] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
Abstract
BACKGROUND Polyamidoamine (PAMAM) dendrimers modified by polyethylene glycol (PEG) have frequently been investigated as a delivery carrier for gene therapy. However, modification of PAMAM with PEG using covalent linkage significantly reduces the cellular uptake rate and the transfection efficiency. How to conquer these barriers becomes a burning question in gene delivery. MATERIALS AND METHODS The present study constructed an effective disulfide bond-mediated cleavable RGD modified gene delivery system to overcome the aforementioned limitations. The disulfide bond was introduced between PAMAM dendrimers and PEG chains to realize the cleavage of PEG from the carrier system, whereas the arginine-glycine-aspartate (RGD) peptide was expected to promote the cellular uptake rate. A high mobility group Box 1 (HMGB1) protein containing nuclear localization signal (NLS) was simultaneously introduced to further promote gene expression efficiency. A pDNA/HMGB1/PAMAM-SS-PEG-RGD (DHP) nanocomplex was prepared via electrostatic interaction and characterized. RESULTS The results showed that DHP generated small particles and was able to condense and protect pDNA against degradation. In addition, the RGD peptide could significantly promote the cellular uptake of a nanocomplex. Intracellular trafficking and in vitro expression study indicated that the DHP nanocomplex escaped from lysosomes and the disulfide bonds between PAMAM and PEG cleaved due to the high concentration of GSH in the cytoplasm, pDNA consequently became exclusively located in the nucleus under the guidance of HMGB1, thereby promoting the red fluorescence protein (RFP) expression. Importantly, an in vivo antitumor activity study demonstrated that the DHP nanocomplex had higher antitumor activity than any other reference preparation. CONCLUSION All these results confirm that DHP could be a new strategy for improving the transfection and expression efficiency in gene delivery.
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Affiliation(s)
- Ji Li
- Department of Pharmaceutics, School of Pharmacy, Shenyang Pharmaceutical University, Shenyang 110016, China, ;
| | - Yuting Han
- Department of Pharmaceutics, School of Pharmacy, Shenyang Pharmaceutical University, Shenyang 110016, China, ;
| | - Yue Lu
- Department of Pharmaceutics, School of Pharmacy, Shenyang Pharmaceutical University, Shenyang 110016, China, ;
| | - Baohui Song
- Department of Pharmaceutics, School of Pharmacy, Shenyang Pharmaceutical University, Shenyang 110016, China, ;
| | - Ming Zhao
- Department of Pharmaceutics, School of Pharmacy, Shenyang Pharmaceutical University, Shenyang 110016, China, ;
| | - Haiyang Hu
- Department of Pharmaceutics, School of Pharmacy, Shenyang Pharmaceutical University, Shenyang 110016, China, ;
| | - Dawei Chen
- Department of Pharmaceutics, School of Pharmacy, Shenyang Pharmaceutical University, Shenyang 110016, China, ;
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Jin M, Zhang Y, Gao G, Xi Q, Yang Y, Yan L, Zhou H, Zhao Y, Wu C, Wang L, Lei Y, Yang W, Xu J. MRI Contrast Agents Based on Conjugated Polyelectrolytes and Dendritic Polymers. Macromol Rapid Commun 2018; 39:e1800258. [PMID: 30027610 DOI: 10.1002/marc.201800258] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2018] [Revised: 05/09/2018] [Indexed: 02/28/2024]
Abstract
Three complexes of gadolinium-based on dentritic molecules are reported as magnetic resonance imaging (MRI) contrast agents. Their ligands feature four carboxylate groups, which contribute to good water solubility and a strong combination with metal ions. As a new attempt, coupling polymerization is carried out to make a combination of conjugated polyelectrolytes and dendrimers for MRI contrast agents. For comparison, mononuclear and binuclear complexes are also reported. The investigation suggests that the contrast agent with the newly designed macromolecular skeleton provides higher longitudinal relaxivity value (36.2 mm -1 s-1 ) and more visible enhancement in in vivo and in vitro MR images than the small molecular ones. In addition, extremely low cytotoxicity and main clearance via hepatobiliary are confirmed, which reduces the deterioration of chronic kidney disease. All the results indicate that these three complexes are generally applicable as promising clinical contrast agents.
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Affiliation(s)
- Manyu Jin
- State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry Chinese Academy of Sciences, University of Chinese Academy of Sciences, Changchun, 130022, P. R. China
| | - Yanqun Zhang
- State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry Chinese Academy of Sciences, University of Science and Technology of China, Changchun, 130022, P. R. China
| | - Ge Gao
- State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry Chinese Academy of Sciences, University of Science and Technology of China, Changchun, 130022, P. R. China
| | - Qiaoyue Xi
- State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry Chinese Academy of Sciences, University of Chinese Academy of Sciences, Changchun, 130022, P. R. China
| | - Yun Yang
- State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry Chinese Academy of Sciences, University of Science and Technology of China, Changchun, 130022, P. R. China
| | - Luomei Yan
- School of Pharmaceutical Sciences, Xinjiang Medical University, Urumqi, 830000, P. R. China
| | - Hua Zhou
- State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry Chinese Academy of Sciences, Changchun, 130022, P. R. China
| | - Yongxia Zhao
- State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry Chinese Academy of Sciences, Changchun, 130022, P. R. China
| | - Cunqi Wu
- State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry Chinese Academy of Sciences, Changchun, 130022, P. R. China
| | - Lidan Wang
- College of Chemical Engineering and Material, Quanzhou Normal University, Quanzhou, 362000, P. R. China
| | - Yongqian Lei
- Guangdong Institute of Analysis, Guangdong Provincial Key Laboratory of Emergency Test for Dangerous Chemicals, Guangzhou, 510070, P. R. China
| | - Wei Yang
- State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry Chinese Academy of Sciences, Changchun, 130022, P. R. China
| | - Jingwei Xu
- State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry Chinese Academy of Sciences, Changchun, 130022, P. R. China
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Yan H, Gao X, Zhang Y, Chang W, Li J, Li X, Du Q, Li C. Imaging Tiny Hepatic Tumor Xenografts via Endoglin-Targeted Paramagnetic/Optical Nanoprobe. ACS APPLIED MATERIALS & INTERFACES 2018; 10:17047-17057. [PMID: 29708329 DOI: 10.1021/acsami.8b02648] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/25/2023]
Abstract
Surgery is the mainstay for treating hepatocellular carcinoma (HCC). However, it is a great challenge for surgeons to identify HCC in its early developmental stage. The diagnostic sensitivity for a tiny HCC with a diameter less than 1.0 cm is usually as low as 10-33% for computed tomography (CT) and 29-43% for magnetic resonance imaging (MRI). Although MRI is the preferred imaging modality for detecting HCC, with its unparalleled spatial resolution for soft tissue, the commercially available contrast agent, such as Gd3+-DTPA, cannot accurately define HCC because of its short circulation lifetime and lack of tumor-targeting specificity. Endoglin (CD105), a type I membrane glycoprotein, is highly expressed both in HCC cells and in the endothelial cells of neovasculature, which are abundant at the tumor periphery. In this work, a novel single-stranded DNA oligonucleotide-based aptamer was screened by systematic evolution of ligands in an exponential enrichment assay and showed a high binding affinity ( KD = 98 pmol/L) to endoglin. Conjugating the aptamers and imaging reporters on a G5 dendrimer created an HCC-targeting nanoprobe that allowed the successful visualization of orthotopic HCC xenografts with diameters as small as 1-4 mm. Significantly, the invasive tumor margin was clearly delineated, with a tumor to normal ratio of 2.7 by near-infrared (NIR) fluorescence imaging and 2.1 by T1-weighted MRI. This multimodal nanoprobe holds promise not only for noninvasively defining tiny HCC by preoperative MRI but also for guiding tumor excision via intraoperative NIR fluorescence imaging, which will probably gain benefit for the patient's therapeutic response and improve the survival rate.
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Affiliation(s)
- Huihui Yan
- Department of Gastroenterology, The Second Affiliated Hospital, College of Medicine , Zhejiang University , Hangzhou , Zhejiang Province 310009 , China
| | - Xihui Gao
- Key Laboratory of Smart Drug Delivery, Ministry of Education, School of Pharmacy , Fudan University , Shanghai 201203 , China
- Department of Laboratory Medicine & Central Laboratory , Shanghai Jiaotong University Affiliated Sixth People's Hospital South Campus , Shanghai 201499 , China
- School of Chemistry and Chemical Engineering, State Key Laboratory of Metal Matrix Composites , Shanghai Jiao Tong University , Shanghai 200240 , China
| | - Yunfei Zhang
- Key Laboratory of Smart Drug Delivery, Ministry of Education, School of Pharmacy , Fudan University , Shanghai 201203 , China
| | - Wenju Chang
- Department of General Surgery, Zhongshan Hospital , Fudan University , Shanghai 200032 , China
| | - Jianhui Li
- Ningbo No. 2 Hospital , No. 41 Northwest Street , Ningbo , Zhejiang Province 315010 , China
| | - Xinwei Li
- Key Laboratory of Smart Drug Delivery, Ministry of Education, School of Pharmacy , Fudan University , Shanghai 201203 , China
| | - Qin Du
- Department of Gastroenterology, The Second Affiliated Hospital, College of Medicine , Zhejiang University , Hangzhou , Zhejiang Province 310009 , China
| | - Cong Li
- Key Laboratory of Smart Drug Delivery, Ministry of Education, School of Pharmacy , Fudan University , Shanghai 201203 , China
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12
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Li H, Wang P, Gong W, Wang Q, Zhou J, Zhu WH, Cheng Y. Dendron-Grafted Polylysine-Based Dual-Modal Nanoprobe for Ultra-Early Diagnosis of Pancreatic Precancerosis via Targeting a Urokinase-Type Plasminogen Activator Receptor. Adv Healthc Mater 2018; 7. [PMID: 29195018 DOI: 10.1002/adhm.201700912] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2017] [Revised: 09/17/2017] [Indexed: 12/14/2022]
Abstract
Pancreatic ductal adenocarcinoma (PDAC) is one of the leading causes of cancer death. Early detection of precancerous pancreatic intraepithelial neoplasia (PanIN) tissues is an urgent challenge to improve the PDAC prognosis. Here, a urokinase-type plasminogen activator receptor (uPAR)-targeted magnetic resonance (MR)/near-infrared fluorescence (NIRF) dual-modal nanoprobe dendron-grafted polylysine (DGL)-U11 for ultra-early detection of pancreatic precancerosis is reported. Because of its good biocompatibility and biodegradability, globular architecture, and well-defined reactive groups, the DGL is chosen as the platform to load with a pancreatic tumor-targeting peptide U11, a magnetic resonance contrast agent Gd3+ -diethylene triamine pentaacetic acid, and a near-infrared fluorescent cyanine dye Cy5.5. The nanoprobe DGL-U11 has several preferable characteristics, such as active peptide targeting to activator receptor, good biocompatibility, dual-modal imaging diagnosis, and well controlled diameter in a range of 15-25 nm. Upon incorporation of the active U11 peptide target to the overexpressed activator receptor uPAR, the targeted nanoprobe DGL-U11 can increase to the earlier PanIN-II stage through in vivo NIRF imaging. Labeled with both MR and NIRF bioimaging reporters, the uPAR-targeted dual-modal nanoprobe is very effective in the targeted imaging of precancerous PanINs and PDAC lesions with high sensitivity and spatial resolution, providing a promising platform to the ultra-early detection of PDAC.
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Affiliation(s)
- Hui Li
- Department of Radiology, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, No. 600 Yi Shan Road, Shanghai, 200233, P. R. China
| | - Ping Wang
- Molecular Imaging Laboratory, MGH/MIT/HMS Athinoula A. Martinos Center for Biomedical Imaging, Department of Radiology, Massachusetts General Hospital, Harvard Medical School, Boston, MA, 02129, USA
| | - Wenyu Gong
- Department of CT, the First People's Hospital of Yancheng City, Jiangsu, 224005, China
| | - Qi Wang
- Key Laboratory for Advanced Materials and Institute of Fine Chemicals, Shanghai Key Laboratory of Functional Materials Chemistry, School of Chemistry and Molecular Engineering, East China University of Science and Technology, Shanghai, 200237, P. R. China
| | - Jia Zhou
- Department of Radiology, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, No. 600 Yi Shan Road, Shanghai, 200233, P. R. China
| | - Wei-Hong Zhu
- Key Laboratory for Advanced Materials and Institute of Fine Chemicals, Shanghai Key Laboratory of Functional Materials Chemistry, School of Chemistry and Molecular Engineering, East China University of Science and Technology, Shanghai, 200237, P. R. China
| | - Yingsheng Cheng
- Department of Radiology, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, No. 600 Yi Shan Road, Shanghai, 200233, P. R. China
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13
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Naz S, Shahzad H, Ali A, Zia M. Nanomaterials as nanocarriers: a critical assessment why these are multi-chore vanquisher in breast cancer treatment. ARTIFICIAL CELLS NANOMEDICINE AND BIOTECHNOLOGY 2017; 46:899-916. [PMID: 28914553 DOI: 10.1080/21691401.2017.1375937] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Breast cancer is a group of diseases with various subtypes and leads to high mortality throughout the globe. Various conventional techniques are in practice to cure breast cancer but these techniques are linked with various shortcomings. Mostly these treatments are not site directed and cause toxicity towards normal cells. In order to overcome these issues, we need smart system that can deliver anticancer drugs to specific sites. Targeted drug delivery can be achieved via passive or active drug delivery using nanocarriers. This mode of drug delivery is more effective against breast cancer and may help in the reduction of mortality rate. Potentially used nanocarriers for targeted drug delivery belong to organic and inorganic molecules. Various FDA approved nano products are in use to cure breast cancer. However, body's defense system is main limitation for potential use of nano systems. However, this can be overcome by surface modification of nanocarriers. In this review, breast cancer and its types, targeted drug delivery and nanocarriers used to cure breast cancer are discussed. By progressing nanotechnology, we will be able to fight against this life threatening issue and serve the humanity, which is the basic aim of scientific knowledge.
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Affiliation(s)
- Sania Naz
- a Department of Biotechnology , Quaid-i-Azam University , Islamabad , Pakistan
| | - Hira Shahzad
- b Institute of Biochemistry and Biotechnology, PMAS Arid Agriculture , Rawalpindi , Pakistan
| | - Attarad Ali
- a Department of Biotechnology , Quaid-i-Azam University , Islamabad , Pakistan
| | - Muhammad Zia
- a Department of Biotechnology , Quaid-i-Azam University , Islamabad , Pakistan
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14
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Duro-Castano A, Gallon E, Decker C, Vicent MJ. Modulating angiogenesis with integrin-targeted nanomedicines. Adv Drug Deliv Rev 2017; 119:101-119. [PMID: 28502767 DOI: 10.1016/j.addr.2017.05.008] [Citation(s) in RCA: 58] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2017] [Revised: 04/12/2017] [Accepted: 05/09/2017] [Indexed: 12/20/2022]
Abstract
Targeting angiogenesis-related pathologies, which include tumorigenesis and metastatic processes, has become an attractive strategy for the development of efficient guided nanomedicines. In this respect, integrins are cell-adhesion molecules involved in angiogenesis signaling pathways and are overexpressed in many angiogenic processes. Therefore, they represent specific biomarkers not only to monitor disease progression but also to rationally design targeted nanomedicines. Arginine-glycine-aspartic (RGD) containing peptides that bind to specific integrins have been widely utilized to provide ligand-mediated targeting capabilities to small molecules, peptides, proteins, and antibodies, as well as to drug/imaging agent-containing nanomedicines, with the final aim of maximizing their therapeutic index. Within this review, we aim to cover recent and relevant examples of different integrin-assisted nanosystems including polymeric nanoconstructs, liposomes, and inorganic nanoparticles applied in drug/gene therapy as well as imaging and theranostics. We will also critically address the overall benefits of integrin-targeting.
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Affiliation(s)
- Aroa Duro-Castano
- Centro de Investigación Príncipe Felipe, Polymer Therapeutics Lab., Av. Eduardo Primo Yúfera 3, E-46012 Valencia, Spain.
| | - Elena Gallon
- Centro de Investigación Príncipe Felipe, Polymer Therapeutics Lab., Av. Eduardo Primo Yúfera 3, E-46012 Valencia, Spain.
| | - Caitlin Decker
- Centro de Investigación Príncipe Felipe, Polymer Therapeutics Lab., Av. Eduardo Primo Yúfera 3, E-46012 Valencia, Spain.
| | - María J Vicent
- Centro de Investigación Príncipe Felipe, Polymer Therapeutics Lab., Av. Eduardo Primo Yúfera 3, E-46012 Valencia, Spain.
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15
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Heo JY, Kang SH, Kim YH, You S, Jin KS, Kim SW, Jung HY, Jung KO, Lee CH, Kim MJ, Sung SE, Kim B, Choi IS, Youn H, Chung JK, Kim SK, Kim Y. Toward redesigning the PEG surface of nanocarriers for tumor targeting: impact of inner functionalities on size, charge, multivalent binding, and biodistribution. Chem Sci 2017; 8:5186-5195. [PMID: 28970905 PMCID: PMC5618790 DOI: 10.1039/c6sc05640g] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2016] [Accepted: 04/17/2017] [Indexed: 01/15/2023] Open
Abstract
Achieving accurate and efficacious tumor targeting with minimal off-target effects is of paramount importance in designing diagnostic and therapeutic agents for cancer. In this respect, nanocarriers have gained enormous popularity because of their attainable multifunctional features, as well as tumor-targeting potential by extravasation. However, once administered into the bloodstream, nanocarriers face various in vivo obstacles that may significantly impair their performance needed for clinical translation. Herein, we demonstrate a strategy to enhance tumor-targeting efficiency by embedding functionalities in the interior region of partially PEGylated nanocarriers (ca. 10 nm in diameter), intended for active or passive targeting. The cooperative impact of these topologically inner functional groups (IFGs) was marked: enhancements of >100-fold in IC50in vitro (e.g., a high-avidity ligand with cationic IFGs) and >2-fold in tumor accumulation at 2 h post-injection in vivo (e.g., a high-avidity ligand with anionic IFGs), both against the fully PEGylated counterpart. Analogous to allosteric modulators, properly employed IFGs may substantially improve the process of effectively directing nanocarriers to tumors, which is otherwise solely dependent on avidity or extravasation.
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Affiliation(s)
- Ju Young Heo
- Korea Research Institute of Bioscience and Biotechnology , Daejeon , 34141 , Korea .
- Department of Chemistry , Korea Advanced Institute of Science and Technology , Daejeon , 34141 , Korea
| | - Se Hun Kang
- Molecular Imaging and Therapy Branch , National Cancer Center , Goyang , 10408 , Korea .
| | - Young-Hwa Kim
- Department of Biomedical Sciences , Seoul National University College of Medicine , Seoul , 03080 , Korea .
- Cancer Research Institute , Seoul National University College of Medicine , Seoul , 03080 , Korea
| | - Suyeon You
- Korea Research Institute of Bioscience and Biotechnology , Daejeon , 34141 , Korea .
| | - Kyeong Sik Jin
- Pohang Accelerator Laboratory , Pohang University of Science and Technology , Pohang , 37673 , Korea
| | - Seung Won Kim
- Molecular Imaging and Therapy Branch , National Cancer Center , Goyang , 10408 , Korea .
| | - Hye-Youn Jung
- Korea Research Institute of Bioscience and Biotechnology , Daejeon , 34141 , Korea .
| | - Kyung Oh Jung
- Department of Biomedical Sciences , Seoul National University College of Medicine , Seoul , 03080 , Korea .
- Cancer Research Institute , Seoul National University College of Medicine , Seoul , 03080 , Korea
| | - Chul-Hee Lee
- Department of Biomedical Sciences , Seoul National University College of Medicine , Seoul , 03080 , Korea .
- Cancer Research Institute , Seoul National University College of Medicine , Seoul , 03080 , Korea
| | - Mi Jung Kim
- Korea Research Institute of Bioscience and Biotechnology , Daejeon , 34141 , Korea .
| | - Soo-Eun Sung
- Korea Research Institute of Bioscience and Biotechnology , Daejeon , 34141 , Korea .
| | - Boram Kim
- Korea Research Institute of Bioscience and Biotechnology , Daejeon , 34141 , Korea .
| | - Insung S Choi
- Department of Chemistry , Korea Advanced Institute of Science and Technology , Daejeon , 34141 , Korea
| | - Hyewon Youn
- Department of Biomedical Sciences , Seoul National University College of Medicine , Seoul , 03080 , Korea .
- Cancer Research Institute , Seoul National University College of Medicine , Seoul , 03080 , Korea
- Department of Nuclear Medicine , Seoul National University Hospital , Seoul , 03080 , Korea
| | - June-Key Chung
- Department of Biomedical Sciences , Seoul National University College of Medicine , Seoul , 03080 , Korea .
- Cancer Research Institute , Seoul National University College of Medicine , Seoul , 03080 , Korea
- Department of Nuclear Medicine , Seoul National University Hospital , Seoul , 03080 , Korea
| | - Seok-Ki Kim
- Molecular Imaging and Therapy Branch , National Cancer Center , Goyang , 10408 , Korea .
| | - Yoonkyung Kim
- Korea Research Institute of Bioscience and Biotechnology , Daejeon , 34141 , Korea .
- Korea University of Science and Technology (UST) , Daejeon , 34113 , Korea
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16
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Gündüz S, Savić T, Toljić Đ, Angelovski G. Preparation and In Vitro Characterization of Dendrimer-based Contrast Agents for Magnetic Resonance Imaging. J Vis Exp 2016:54776. [PMID: 28060285 PMCID: PMC5226353 DOI: 10.3791/54776] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
Paramagnetic complexes of gadolinium(III) with acyclic or macrocyclic chelates are the most commonly used contrast agents (CAs) for magnetic resonance imaging (MRI). Their purpose is to enhance the relaxation rate of water protons in tissue, thus increasing the MR image contrast and the specificity of the MRI measurements. Current clinically approved contrast agents are low molecular weight molecules that are rapidly cleared from the body. The use of dendrimers as carriers of paramagnetic chelators can play an important role in the future development of more efficient MRI contrast agents. Specifically, the increase in local concentration of the paramagnetic species results in a higher signal contrast. Furthermore, this CA provides a longer tissue retention time due to its high molecular weight and size. Here, we demonstrate a convenient procedure for the preparation of macromolecular MRI contrast agents based on poly(amidoamine) (PAMAM) dendrimers with monomacrocyclic DOTA-type chelators (DOTA - 1,4,7,10-tetraazacyclododecane-1,4,7,10-tetraacetate). The chelating unit was appended by exploiting the reactivity of the isothiocyanate (NCS) group towards the amine surface groups of the PAMAM dendrimer to form thiourea bridges. Dendrimeric products were purified and analyzed by means of nuclear magnetic resonance spectroscopy, mass spectrometry, and elemental analysis. Finally, high resolution MR images were recorded and the signal contrasts obtained from the prepared dendrimeric and the commercially available monomeric agents were compared.
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Affiliation(s)
- Serhat Gündüz
- MR Neuroimaging Agents, Max Planck Institute for Biological Cybernetics
| | - Tanja Savić
- MR Neuroimaging Agents, Max Planck Institute for Biological Cybernetics
| | - Đorđe Toljić
- MR Neuroimaging Agents, Max Planck Institute for Biological Cybernetics
| | - Goran Angelovski
- MR Neuroimaging Agents, Max Planck Institute for Biological Cybernetics;
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17
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Mehta A, Ghaghada K, Mukundan S. Molecular Imaging of Brain Tumors Using Liposomal Contrast Agents and Nanoparticles. Magn Reson Imaging Clin N Am 2016; 24:751-763. [PMID: 27742115 DOI: 10.1016/j.mric.2016.06.004] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
The first generation of cross-sectional brain imaging using computed tomography (CT), ultrasonography, and eventually MR imaging focused on determining structural or anatomic changes associated with brain disorders. The current state-of-the-art imaging, functional imaging, uses techniques such as CT and MR perfusion that allow determination of physiologic parameters in vivo. In parallel, tissue-based genomic, transcriptomic, and proteomic profiling of brain tumors has created several novel and exciting possibilities for molecular targeting of brain tumors. The next generation of imaging translates these molecular in vitro techniques to in vivo, noninvasive, targeted reconstruction of tumors and their microenvironments.
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Affiliation(s)
- Arnav Mehta
- Medical Scientist Training Program, David Geffen School of Medicine at UCLA, 757 Westwood Plaza, Los Angeles, CA 90095, USA; Division of Biology and Biological Engineering, California Institute of Technology, 1200 East California Boulevard, Pasadena, CA 91125, USA
| | - Ketan Ghaghada
- Edward B. Singleton Department of Pediatric Radiology, Texas Children's Hospital, 1102 Bates Street, Suite 850, Houston, TX 77030, USA; Department of Radiology, Baylor College of Medicine, One Baylor Plaza, Houston, TX 77030, USA
| | - Srinivasan Mukundan
- Division of Neuroradiology, Department of Radiology, Brigham and Woman's Hospital, Harvard Medical School, 75 Francis Street, Boston, MA 02115, USA.
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18
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Brys AK, Gowda R, Loriaux DB, Robertson GP, Mosca PJ. Nanotechnology-based strategies for combating toxicity and resistance in melanoma therapy. Biotechnol Adv 2016; 34:565-577. [PMID: 26826558 DOI: 10.1016/j.biotechadv.2016.01.004] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2015] [Revised: 11/15/2015] [Accepted: 01/16/2016] [Indexed: 12/17/2022]
Abstract
Drug toxicity and resistance remain formidable challenges in cancer treatment and represent an area of increasing attention in the case of melanoma. Nanotechnology represents a paradigm-shifting field with the potential to mitigate drug resistance while improving drug delivery and minimizing toxicity. Recent clinical and pre-clinical studies have demonstrated how a diverse array of nanoparticles may be harnessed to circumvent known mechanisms of drug resistance in melanoma to improve therapeutic efficacy. In this review, we discuss known mechanisms of resistance to various melanoma therapies and possible nanotechnology-based strategies that could be used to overcome these barriers and improve the pharmacologic arsenal available to combat advanced stage melanoma.
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Affiliation(s)
- Adam K Brys
- Department of Surgery, Division of Surgical Oncology, Duke University Medical Center, Durham, NC 27710, United States
| | - Raghavendra Gowda
- Department of Pharmacology, The Pennsylvania State University College of Medicine, Hershey, PA 17033, United States
| | - Daniel B Loriaux
- Department of Surgery, Division of Surgical Oncology, Duke University Medical Center, Durham, NC 27710, United States
| | - Gavin P Robertson
- Department of Pharmacology, The Pennsylvania State University College of Medicine, Hershey, PA 17033, United States
| | - Paul J Mosca
- Department of Surgery, Division of Surgical Oncology, Duke University Medical Center, Durham, NC 27710, United States.
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19
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Vida Y, Collado D, Najera F, Claros S, Becerra J, Andrades JA, Perez-Inestrosa E. Dendrimer surface orientation of the RGD peptide affects mesenchymal stem cell adhesion. RSC Adv 2016. [DOI: 10.1039/c6ra06177j] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022] Open
Abstract
Mesenchymal stem cells (MSCs) are promising candidates for a range of tissue regeneration applications.
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Affiliation(s)
- Y. Vida
- Universidad de Malaga
- IBIMA
- Department of Organic Chemistry
- 29071-Malaga
- Spain
| | - D. Collado
- Universidad de Malaga
- IBIMA
- Department of Organic Chemistry
- 29071-Malaga
- Spain
| | - F. Najera
- Universidad de Malaga
- IBIMA
- Department of Organic Chemistry
- 29071-Malaga
- Spain
| | - S. Claros
- Universidad de Malaga
- Cell Biology, Genetics and Physiology Department
- Networking Biomedical Research Center in Bioengineering, Biomaterials and Nanomedicine-CIBER-BBN
- 29071-Malaga
- Spain
| | - J. Becerra
- Andalusian Centre for Nanomedicine and Biotechnology-BIONAND
- Parque Tecnologico de Andalucia
- 29590-Malaga
- Spain
- Universidad de Malaga
| | - J. A. Andrades
- Universidad de Malaga
- Cell Biology, Genetics and Physiology Department
- Networking Biomedical Research Center in Bioengineering, Biomaterials and Nanomedicine-CIBER-BBN
- 29071-Malaga
- Spain
| | - E. Perez-Inestrosa
- Universidad de Malaga
- IBIMA
- Department of Organic Chemistry
- 29071-Malaga
- Spain
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20
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Cao Y, Liu M, Zhang K, Dong J, Zu G, Chen Y, Zhang T, Xiong D, Pei R. Preparation of linear poly(glycerol) as a T1 contrast agent for tumor-targeted magnetic resonance imaging. J Mater Chem B 2016; 4:6716-6725. [DOI: 10.1039/c6tb01514j] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Macromolecular contrast agents (CAs) labeled with targeting molecules are gaining remarkable interest as promising materials overcoming the defects of small-molecule CAs.
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Affiliation(s)
- Yi Cao
- Key Laboratory of Nano-Bio Interface
- Division of Nanobiomedicine
- Suzhou Institute of Nano-Tech and Nano-Bionics
- Chinese Academy of Sciences
- Suzhou 215123
| | - Min Liu
- Key Laboratory of Nano-Bio Interface
- Division of Nanobiomedicine
- Suzhou Institute of Nano-Tech and Nano-Bionics
- Chinese Academy of Sciences
- Suzhou 215123
| | - Kunchi Zhang
- Key Laboratory of Nano-Bio Interface
- Division of Nanobiomedicine
- Suzhou Institute of Nano-Tech and Nano-Bionics
- Chinese Academy of Sciences
- Suzhou 215123
| | - Jingjin Dong
- Key Laboratory of Nano-Bio Interface
- Division of Nanobiomedicine
- Suzhou Institute of Nano-Tech and Nano-Bionics
- Chinese Academy of Sciences
- Suzhou 215123
| | - Guangyue Zu
- Key Laboratory of Nano-Bio Interface
- Division of Nanobiomedicine
- Suzhou Institute of Nano-Tech and Nano-Bionics
- Chinese Academy of Sciences
- Suzhou 215123
| | - Yang Chen
- Key Laboratory of Nano-Bio Interface
- Division of Nanobiomedicine
- Suzhou Institute of Nano-Tech and Nano-Bionics
- Chinese Academy of Sciences
- Suzhou 215123
| | - Tingting Zhang
- Key Laboratory of Nano-Bio Interface
- Division of Nanobiomedicine
- Suzhou Institute of Nano-Tech and Nano-Bionics
- Chinese Academy of Sciences
- Suzhou 215123
| | - Dangsheng Xiong
- School of Materials Science and Engineering
- Nanjing University of Science and Technology
- Nanjing 210094
- China
| | - Renjun Pei
- Key Laboratory of Nano-Bio Interface
- Division of Nanobiomedicine
- Suzhou Institute of Nano-Tech and Nano-Bionics
- Chinese Academy of Sciences
- Suzhou 215123
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21
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Wong PT, Chen D, Tang S, Yanik S, Payne M, Mukherjee J, Coulter A, Tang K, Tao K, Sun K, Baker JR, Choi SK. Modular Integration of Upconverting Nanocrystal-Dendrimer Composites for Folate Receptor-Specific NIR Imaging and Light-Triggered Drug Release. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2015; 11:6078-6090. [PMID: 26476917 DOI: 10.1002/smll.201501575] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/03/2015] [Revised: 07/13/2015] [Indexed: 06/05/2023]
Abstract
Upconversion nanocrystals (UCNs) display near-infrared (NIR)-responsive photoluminescent properties for NIR imaging and drug delivery. The development of effective strategies for UCN integration with other complementary nanostructures for targeting and drug conjugation is highly desirable. This study reports on a core/shell-based theranostic system designed by UCN integration with a folate (FA)-conjugated dendrimer for tumor targeting and with photocaged doxorubicin as a cytotoxic agent. Two types of UCNs (NaYF4:Yb/Er (or Yb/Tm); diameter = ≈50 to 54 nm) are described, each displaying distinct emission properties upon NIR (980 nm) excitation. The UCNs are surface modified through covalent attachment of photocaged doxorubicin (ONB-Dox) and a multivalent FA-conjugated polyamidoamine (PAMAM) dendrimer G5(FA)6 to prepare UCN@(ONB-Dox)(G5FA). Surface plasmon resonance experiments performed with G5(FA)6 dendrimer alone show nanomolar binding avidity (KD = 5.9 × 10(-9) M) to the folate binding protein. This dendrimer binding corresponds with selective binding and uptake of UCN@(ONB-Dox)(G5FA) by FAR-positive KB carcinoma cells in vitro. Furthermore, UCN@(ONB-Dox)(G5FA) treatment of FAR(+) KB cells inhibits cell growth in a light dependent manner. These results validate the utility of modularly integrated UCN-dendrimer nanocomposites for cell type specific NIR imaging and light-controlled drug release, thus serving as a new theranostic system.
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Affiliation(s)
- Pamela T Wong
- Michigan Nanotechnology Institute for Medicine and Biological Sciences, Department of Internal Medicine, University of Michigan Medical School, Ann Arbor, MI, 48109, USA
| | - Dexin Chen
- State Key Laboratory of Metal Matrix Composites, School of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai, 200240, P. R. China
| | - Shengzhuang Tang
- Michigan Nanotechnology Institute for Medicine and Biological Sciences, Department of Internal Medicine, University of Michigan Medical School, Ann Arbor, MI, 48109, USA
| | - Sean Yanik
- Michigan Nanotechnology Institute for Medicine and Biological Sciences, Department of Internal Medicine, University of Michigan Medical School, Ann Arbor, MI, 48109, USA
| | - Michael Payne
- Michigan Nanotechnology Institute for Medicine and Biological Sciences, Department of Internal Medicine, University of Michigan Medical School, Ann Arbor, MI, 48109, USA
| | - Jhindan Mukherjee
- Michigan Nanotechnology Institute for Medicine and Biological Sciences, Department of Internal Medicine, University of Michigan Medical School, Ann Arbor, MI, 48109, USA
| | - Alexa Coulter
- Michigan Nanotechnology Institute for Medicine and Biological Sciences, Department of Internal Medicine, University of Michigan Medical School, Ann Arbor, MI, 48109, USA
| | - Kenny Tang
- Michigan Nanotechnology Institute for Medicine and Biological Sciences, Department of Internal Medicine, University of Michigan Medical School, Ann Arbor, MI, 48109, USA
| | - Ke Tao
- State Key Laboratory of Metal Matrix Composites, School of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai, 200240, P. R. China
| | - Kang Sun
- State Key Laboratory of Metal Matrix Composites, School of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai, 200240, P. R. China
| | - James R Baker
- Michigan Nanotechnology Institute for Medicine and Biological Sciences, Department of Internal Medicine, University of Michigan Medical School, Ann Arbor, MI, 48109, USA
| | - Seok Ki Choi
- Michigan Nanotechnology Institute for Medicine and Biological Sciences, Department of Internal Medicine, University of Michigan Medical School, Ann Arbor, MI, 48109, USA
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22
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Zhou ZX, Mondjinou Y, Hyun SH, Kulkarni A, Lu ZR, Thompson DH. Gd3+-1,4,7,10-Tetraazacyclododecane-1,4,7-triacetic-2-hydroxypropyl-β-cyclodextrin/Pluronic Polyrotaxane as a Long Circulating High Relaxivity MRI Contrast Agent. ACS APPLIED MATERIALS & INTERFACES 2015; 7:22272-6. [PMID: 26417911 PMCID: PMC4768309 DOI: 10.1021/acsami.5b05393] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/12/2023]
Abstract
A multivalent magnetic resonance imaging agent based on a 2-hydroxypropyl-β-cyclodextrin (HPCD):Pluronic F127 polyrotaxane carrier has been synthesized, and its blood pool contrast properties have been characterized. This Gd3+-DO3A-HPCD/Pluronic polyrotaxane construct is shown to circulate for more than 30 min and provide >100-fold vascular enhancement relative to the monomeric Gd3+-DO3A-HPCD control that is rapidly cleared via the kidney. The high r1 relaxivity at 37 °C (23.83 mM(-1) s(-1) at 1.5 T; 34.08 mM(-1) s(-1) at 0.5 T), extended blood circulation, well-known pharmacology of the polyrotaxane precursors, and absence of acute toxicity make it a highly attractive blood pool contrast agent candidate.
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Affiliation(s)
- Zhu xian Zhou
- Case Western Reserve University, Department of Biomedical Engineering, 10900 Euclid Avenue, Cleveland, OH, USA 44106. Tel: 216-368-0187
| | - Yawo Mondjinou
- Purdue University, Department of Chemistry, Multi-disciplinary Cancer Research Facility, 1203 W. State Street, West Lafayette, IN, USA 47907. Tel: 765-494-0386
| | - Seok Hee Hyun
- Purdue University, Department of Chemistry, Multi-disciplinary Cancer Research Facility, 1203 W. State Street, West Lafayette, IN, USA 47907. Tel: 765-494-0386
| | - Aditya Kulkarni
- Purdue University, Department of Chemistry, Multi-disciplinary Cancer Research Facility, 1203 W. State Street, West Lafayette, IN, USA 47907. Tel: 765-494-0386
| | - Zheng Rong Lu
- Case Western Reserve University, Department of Biomedical Engineering, 10900 Euclid Avenue, Cleveland, OH, USA 44106. Tel: 216-368-0187
- Corresponding authors: ;
| | - David H. Thompson
- Purdue University, Department of Chemistry, Multi-disciplinary Cancer Research Facility, 1203 W. State Street, West Lafayette, IN, USA 47907. Tel: 765-494-0386
- Corresponding authors: ;
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Gündüz S, Nitta N, Vibhute S, Shibata S, Mayer ME, Logothetis NK, Aoki I, Angelovski G. Dendrimeric calcium-responsive MRI contrast agents with slow in vivo diffusion. Chem Commun (Camb) 2015; 51:2782-5. [PMID: 25383973 DOI: 10.1039/c4cc07540d] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
We report a methodology which enables the preparation of dendrimeric contrast agents sensitive to Ca(2+) when starting from the monomeric analogue. The Ca-triggered longitudinal relaxivity response of these agents is not compromised by undertaking synthetic transformations, despite structural changes. The in vivo MRI studies in the rat cerebral cortex indicate that diffusion properties of dendrimeric contrast agents have great advantages as compared to their monomeric equivalents.
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Affiliation(s)
- Serhat Gündüz
- MR Neuroimaging Agents Group, Max Planck Institute for Biological Cybernetics, 72076 Tübingen, Germany.
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Kumar A, Zhang S, Hao G, Hassan G, Ramezani S, Sagiyama K, Lo ST, Takahashi M, Sherry AD, Öz OK, Kovacs Z, Sun X. Molecular platform for design and synthesis of targeted dual-modality imaging probes. Bioconjug Chem 2015; 26:549-58. [PMID: 25615011 PMCID: PMC4428032 DOI: 10.1021/acs.bioconjchem.5b00028] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
![]()
We report a versatile dendritic structure
based platform for construction
of targeted dual-modality imaging probes. The platform contains multiple
copies of 1,4,7,10-tetraazacyclododecane-1,4,7,10-tetraacetic acid
(DOTA) branching out from a 1,4,7-triazacyclononane-N,N′,N″-triacetic
acid (NOTA) core. The specific coordination chemistries of the NOTA
and DOTA moieties offer specific loading of 68/67Ga3+ and Gd3+, respectively, into a common molecular
scaffold. The platform also contains three amino groups which can
potentiate targeted dual-modality imaging of PET/MRI or SPECT/MRI
(PET: positron emission tomography; SPECT: single photon emission
computed tomography; MRI: magnetic resonance imaging) when further
functionalized by targeting vectors of interest. To validate this
design concept, a bimetallic complex was synthesized with six peripheral
Gd-DOTA units and one Ga-NOTA core at the center, whose ion T1 relaxivity per gadolinium atom was measured
to be 15.99 mM–1 s–1 at 20 MHz.
Further, the bimetallic agent demonstrated its anticipated in vivo
stability, tissue distribution, and pharmacokinetic profile when labeled
with 67Ga. When conjugated with a model targeting peptide
sequence, the trivalent construct was able to visualize tumors in
a mouse xenograft model by both PET and MRI via a single dose injection.
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Affiliation(s)
- Amit Kumar
- †Department of Radiology, ‡Advanced Imaging Research Center, University of Texas Southwestern Medical Center, Dallas, Texas 75390, United States
| | - Shanrong Zhang
- †Department of Radiology, ‡Advanced Imaging Research Center, University of Texas Southwestern Medical Center, Dallas, Texas 75390, United States
| | - Guiyang Hao
- †Department of Radiology, ‡Advanced Imaging Research Center, University of Texas Southwestern Medical Center, Dallas, Texas 75390, United States
| | - Gedaa Hassan
- †Department of Radiology, ‡Advanced Imaging Research Center, University of Texas Southwestern Medical Center, Dallas, Texas 75390, United States
| | - Saleh Ramezani
- †Department of Radiology, ‡Advanced Imaging Research Center, University of Texas Southwestern Medical Center, Dallas, Texas 75390, United States
| | - Koji Sagiyama
- †Department of Radiology, ‡Advanced Imaging Research Center, University of Texas Southwestern Medical Center, Dallas, Texas 75390, United States
| | - Su-Tang Lo
- †Department of Radiology, ‡Advanced Imaging Research Center, University of Texas Southwestern Medical Center, Dallas, Texas 75390, United States
| | - Masaya Takahashi
- †Department of Radiology, ‡Advanced Imaging Research Center, University of Texas Southwestern Medical Center, Dallas, Texas 75390, United States
| | - A Dean Sherry
- †Department of Radiology, ‡Advanced Imaging Research Center, University of Texas Southwestern Medical Center, Dallas, Texas 75390, United States
| | - Orhan K Öz
- †Department of Radiology, ‡Advanced Imaging Research Center, University of Texas Southwestern Medical Center, Dallas, Texas 75390, United States
| | - Zoltan Kovacs
- †Department of Radiology, ‡Advanced Imaging Research Center, University of Texas Southwestern Medical Center, Dallas, Texas 75390, United States
| | - Xiankai Sun
- †Department of Radiology, ‡Advanced Imaging Research Center, University of Texas Southwestern Medical Center, Dallas, Texas 75390, United States
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Saraswathy M, Knight GT, Pilla S, Ashton RS, Gong S. Multifunctional drug nanocarriers formed by cRGD-conjugated βCD-PAMAM-PEG for targeted cancer therapy. Colloids Surf B Biointerfaces 2015; 126:590-597. [PMID: 25591850 PMCID: PMC4336634 DOI: 10.1016/j.colsurfb.2014.12.042] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2014] [Revised: 12/17/2014] [Accepted: 12/23/2014] [Indexed: 12/17/2022]
Abstract
Polyamidoamine (PAMAM) dendrimer was conjugated with both carboxymethyl-β-cyclodextrin (βCD) and poly(ethylene glycol) (PEG). Cyclic RGD peptide, used as a tumor targeting ligand, was then selectively conjugated onto the distal ends of the PEG arms. The resulting βCD-PAMAM-PEG-cRGD polymer was able to form stable and uniform nanoparticles (NPs) in aqueous solution. Doxorubicin (Dox), a model hydrophobic anticancer drug, was effectively encapsulated in the NPs via an inclusion complex formed between the drug and βCD. The Dox loading level was 16.8 wt%. The cellular uptake of cRGD-conjugated Dox-loaded NPs in the U87MG cell line was much higher than that of non-targeted NPs. Furthermore, the anti-proliferative effect of the cRGD-conjugated NPs was superior to that of free drug and non-targeted NPs. These results suggest that NPs formed by βCD-PAMAM-PEG-cRGD with a high drug payload may significantly improve the anticancer efficacy by tumor-targeted delivery and enhanced cellular uptake.
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Affiliation(s)
- Manju Saraswathy
- Department of Biomedical Engineering and Wisconsin Institutes for Discovery, University of Wisconsin–Madison, Madison, WI 53706, USA
| | - Gavin T. Knight
- Department of Biomedical Engineering and Wisconsin Institutes for Discovery, University of Wisconsin–Madison, Madison, WI 53706, USA
| | - Srikanth Pilla
- Department of Biomedical Engineering and Wisconsin Institutes for Discovery, University of Wisconsin–Madison, Madison, WI 53706, USA
| | - Randolph S. Ashton
- Department of Biomedical Engineering and Wisconsin Institutes for Discovery, University of Wisconsin–Madison, Madison, WI 53706, USA
| | - Shaoqin Gong
- Department of Biomedical Engineering and Wisconsin Institutes for Discovery, University of Wisconsin–Madison, Madison, WI 53706, USA
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26
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Gündüz S, Power A, Maier ME, Logothetis NK, Angelovski G. Synthesis and Characterization of a Biotinylated Multivalent Targeted Contrast Agent. Chempluschem 2014; 80:612-622. [DOI: 10.1002/cplu.201402329] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2014] [Indexed: 12/29/2022]
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Park JA, Lee YJ, Ko IO, Kim TJ, Chang Y, Lim SM, Kim KM, Kim JY. Improved tumor-targeting MRI contrast agents: Gd(DOTA) conjugates of a cycloalkane-based RGD peptide. Biochem Biophys Res Commun 2014; 455:246-50. [PMID: 25449282 DOI: 10.1016/j.bbrc.2014.10.155] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2014] [Accepted: 10/31/2014] [Indexed: 11/16/2022]
Abstract
Two new MRI contrast agents, Gd-DOTA-c(RGD-ACP-K) (1) and Gd-DOTA-c(RGD-ACH-K) (2), which were designed by incorporating aminocyclopentane (ACP)- or aminocyclohexane (ACH)-carboxylic acid into Gd-DOTA (gadolinium-tetraazacyclo dodecanetetraacetic acid) and cyclic RGDK peptides, were synthesized and evaluated for tumor-targeting ability in vitro and in vivo. Binding affinity studies showed that both 1 and 2 exhibited higher affinity for integrin receptors than cyclic RGDyK peptides, which were used as a reference. These complexes showed high relaxivity and good stability in human serum and have the potential to improve target-specific signal enhancement in vivo MR images.
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Affiliation(s)
- Ji-Ae Park
- Molecular Imaging Research Center, Korea Institute of Radiological & Medical Sciences, Seoul, Republic of Korea.
| | - Yong Jin Lee
- Molecular Imaging Research Center, Korea Institute of Radiological & Medical Sciences, Seoul, Republic of Korea
| | - In Ok Ko
- Molecular Imaging Research Center, Korea Institute of Radiological & Medical Sciences, Seoul, Republic of Korea
| | - Tae-Jeong Kim
- Institute of Biomedical Engineering, Kyungpook National University, Daegu, Republic of Korea
| | - Yongmin Chang
- Institute of Biomedical Engineering, Kyungpook National University, Daegu, Republic of Korea
| | - Sang Moo Lim
- Department of Nuclear Medicine, Korea Institute of Radiological & Medical Sciences, Seoul, Republic of Korea
| | - Kyeong Min Kim
- Molecular Imaging Research Center, Korea Institute of Radiological & Medical Sciences, Seoul, Republic of Korea
| | - Jung Young Kim
- Molecular Imaging Research Center, Korea Institute of Radiological & Medical Sciences, Seoul, Republic of Korea.
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28
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Abstract
Molecular imaging non-invasively visualizes and characterizes the biologic functions and mechanisms in living organisms at a molecular level. In recent years, advances in imaging instruments, imaging probes, assay methods, and quantification techniques have enabled more refined and reliable images for more accurate diagnoses. Multimodal imaging combines two or more imaging modalities into one system to produce details in clinical diagnostic imaging that are more precise than conventional imaging. Multimodal imaging offers complementary advantages: high spatial resolution, soft tissue contrast, and biological information on the molecular level with high sensitivity. However, combining all modalities into a single imaging probe involves problems yet to be solved due to the requirement of high dose contrast agents for a component of imaging modality with low sensitivity. The introduction of targeting moieties into the probes enhances the specific binding of targeted multimodal imaging modalities and selective accumulation of the imaging agents at a disease site to provide more accurate diagnoses. An extensive list of prior reports on the targeted multimodal imaging probes categorized by each modality is presented and discussed. In addition to accurate diagnosis, targeted multimodal imaging agents carrying therapeutic medications make it possible to visualize the theranostic effect and the progress of disease. This will facilitate the development of an imaging-guided therapy, which will widen the application of the targeted multimodal imaging field to experiments in vivo.
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Bennett KM, Jo JI, Cabral H, Bakalova R, Aoki I. MR imaging techniques for nano-pathophysiology and theranostics. Adv Drug Deliv Rev 2014; 74:75-94. [PMID: 24787226 DOI: 10.1016/j.addr.2014.04.007] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2013] [Revised: 03/02/2014] [Accepted: 04/20/2014] [Indexed: 11/25/2022]
Abstract
The advent of nanoparticle DDSs (drug delivery systems, nano-DDSs) is opening new pathways to understanding physiology and pathophysiology at the nanometer scale. A nano-DDS can be used to deliver higher local concentrations of drugs to a target region and magnify therapeutic effects. However, interstitial cells or fibrosis in intractable tumors, as occurs in pancreatic or scirrhous stomach cancer, tend to impede nanoparticle delivery. Thus, it is critical to optimize the type and size of nanoparticles to reach the target. High-resolution 3D imaging provides a means of "seeing" the nanoparticle distribution and therapeutic effects. We introduce the concept of "nano-pathophysiological imaging" as a strategy for theranostics. The strategy consists of selecting an appropriate nano-DDS and rapidly evaluating drug effects in vivo to guide the next round of therapy. In this article we classify nano-DDSs by component carrier materials and present an overview of the significance of nano-pathophysiological MRI.
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30
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How to study dendrimers and dendriplexes III. Biodistribution, pharmacokinetics and toxicity in vivo. J Control Release 2014; 181:40-52. [DOI: 10.1016/j.jconrel.2014.02.021] [Citation(s) in RCA: 83] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2014] [Revised: 02/21/2014] [Accepted: 02/22/2014] [Indexed: 12/15/2022]
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Bimodal imaging probes for combined PET and OI: recent developments and future directions for hybrid agent development. BIOMED RESEARCH INTERNATIONAL 2014; 2014:153741. [PMID: 24822177 PMCID: PMC4009187 DOI: 10.1155/2014/153741] [Citation(s) in RCA: 57] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/11/2014] [Accepted: 03/18/2014] [Indexed: 12/02/2022]
Abstract
Molecular imaging—and especially positron emission tomography (PET)—has gained increasing importance for diagnosis of various diseases and thus experiences an increasing dissemination. Therefore, there is also a growing demand for highly affine PET tracers specifically accumulating and visualizing target structures in the human body. Beyond the development of agents suitable for PET alone, recent tendencies aim at the synthesis of bimodal imaging probes applicable in PET as well as optical imaging (OI), as this combination of modalities can provide clinical advantages. PET, due to the high tissue penetration of the γ-radiation emitted by PET nuclides, allows a quantitative imaging able to identify and visualize tumors and metastases in the whole body. OI on the contrary visualizes photons exhibiting only a limited tissue penetration but enables the identification of tumor margins and infected lymph nodes during surgery without bearing a radiation burden for the surgeon. Thus, there is an emerging interest in bimodal agents for PET and OI in order to exploit the potential of both imaging techniques for the imaging and treatment of tumor diseases. This short review summarizes the available hybrid probes developed for dual PET and OI and discusses future directions for hybrid agent development.
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32
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Bruckman MA, Yu X, Steinmetz NF. Engineering Gd-loaded nanoparticles to enhance MRI sensitivity via T(1) shortening. NANOTECHNOLOGY 2013; 24:462001. [PMID: 24158750 PMCID: PMC3895399 DOI: 10.1088/0957-4484/24/46/462001] [Citation(s) in RCA: 59] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
Abstract
Magnetic resonance imaging (MRI) is a noninvasive imaging technique capable of obtaining high-resolution anatomical images of the body. Major drawbacks of MRI are the low contrast agent sensitivity and inability to distinguish healthy tissue from diseased tissue, making early detection challenging. To address this technological hurdle, paramagnetic contrast agents have been developed to increase the longitudinal relaxivity, leading to an increased signal-to-noise ratio. This review focuses on methods and principles that enabled the design and engineering of nanoparticles to deliver contrast agents with enhanced ionic relaxivities. Different engineering strategies and nanoparticle platforms will be compared in terms of their manufacturability, biocompatibility properties, and their overall potential to make an impact in clinical MR imaging.
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Affiliation(s)
- Michael A. Bruckman
- Department of Biomedical Engineering, Case Western Reserve University, School of Medicine, 10900 Euclid Avenue, Cleveland, OH 44106, USA
| | - Xin Yu
- Department of Biomedical Engineering, Case Western Reserve University, School of Medicine, 10900 Euclid Avenue, Cleveland, OH 44106, USA
- Department of Radiology, Case Western Reserve University, School of Medicine, 10900 Euclid Avenue, Cleveland, OH 44106, USA
| | - Nicole F. Steinmetz
- Department of Biomedical Engineering, Case Western Reserve University, School of Medicine, 10900 Euclid Avenue, Cleveland, OH 44106, USA
- Department of Radiology, Case Western Reserve University, School of Medicine, 10900 Euclid Avenue, Cleveland, OH 44106, USA
- Department of Materials Science and Engineering, Case Western Reserve University, School of Medicine, 10900 Euclid Avenue, Cleveland, OH 44106, USA
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33
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Medina SH, Tiruchinapally G, Chevliakov MV, Durmaz YY, Stender RN, Ensminger WD, Shewach DS, Elsayed MEH. Targeting hepatic cancer cells with pegylated dendrimers displaying N-acetylgalactosamine and SP94 peptide ligands. Adv Healthc Mater 2013; 2:1337-50. [PMID: 23554387 DOI: 10.1002/adhm.201200406] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2012] [Revised: 01/25/2013] [Indexed: 12/13/2022]
Abstract
Poly(amidoamine) (PAMAM) dendrimers are branched water-soluble polymers defined by consecutive generation numbers (Gn) indicating a parallel increase in size, molecular weight, and number of surface groups available for conjugation of bioactive agents. In this article, we compare the biodistribution of N-acetylgalactosamine (NAcGal)-targeted [(14) C]1 -G5-(NH2 )5 -(Ac)108 -(NAcGal)14 particles to non-targeted [(14) C]1 -G5-(NH2 )127 and PEGylated [(14) C]1 -G5-(NH2 )44 -(Ac)73 -(PEG)10 particles in a mouse hepatic cancer model. Results show that both NAcGal-targeted and non-targeted particles are rapidly cleared from the systemic circulation with high distribution to the liver. However, NAcGal-targeted particles exhibited 2.5-fold higher accumulation in tumor tissue compared to non-targeted ones. In comparison, PEGylated particles showed a 16-fold increase in plasma residence time and a 5-fold reduction in liver accumulation. These results motivated us to engineer new PEGylated G5 particles with PEG chains anchored to the G5 surface via acid-labile cis-aconityl linkages where the free PEG tips are functionalized with NAcGal or SP94 peptide to investigate their potential as targeting ligands for hepatic cancer cells as a function of sugar conformation (α versus β), ligand concentration (100-4000 nM), and incubation time (2 and 24 hours) compared to fluorescently (Fl)-labeled and non-targeted G5-(Fl)6 -(NH2 )122 and G5-(Fl)6 -(Ac)107 -(cPEG)15 particles. Results show G5-(Fl)6 -(Ac)107 -(cPEG[NAcGalβ ])14 particles achieve faster uptake and higher intracellular concentrations in HepG2 cancer cells compared to other G5 particles while escaping the non-specific adsorption of serum protein and phagocytosis by Kupffer cells, which make these particles the ideal carrier for selective drug delivery into hepatic cancer cells.
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Affiliation(s)
- Scott H Medina
- University of Michigan, Department of Biomedical Engineering, 1101 Beal Avenue, Lurie Biomedical Engineering Building, Room 2150, Ann Arbor, MI 48109, USA, Web: www.bme.umich.edu/centlab.php
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Expand classical drug administration ways by emerging routes using dendrimer drug delivery systems: a concise overview. Adv Drug Deliv Rev 2013; 65:1316-30. [PMID: 23415951 DOI: 10.1016/j.addr.2013.01.001] [Citation(s) in RCA: 238] [Impact Index Per Article: 21.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2012] [Revised: 12/08/2012] [Accepted: 01/30/2013] [Indexed: 12/21/2022]
Abstract
Drugs are introduced into the body by numerous routes such as enteral (oral, sublingual and rectum administration), parenteral (intravascular, intramuscular, subcutaneous and inhalation administration), or topical (skin and mucosal membranes). Each route has specific purposes, advantages and disadvantages. Today, the oral route remains the preferred one for different reasons such as ease and compliance by patients. Several nanoformulated drugs have been already approved by the FDA, such as Abelcet®, Doxil®, Abraxane® or Vivagel®(Starpharma) which is an anionic G4-poly(L-lysine)-type dendrimer showing potent topical vaginal microbicide activity. Numerous biochemical studies, as well as biological and pharmacological applications of both dendrimer based products (dendrimers as therapeutic compounds per se, like Vivagel®) and dendrimers as drug carriers (covalent conjugation or noncovalent encapsulation of drugs) were described. It is widely known that due to their outstanding physical and chemical properties, dendrimers afforded improvement of corresponding carried-drugs as dendrimer-drug complexes or conjugates (versus plain drug) such as biodistribution and pharmacokinetic behaviors. The purpose of this manuscript is to review the recent progresses of dendrimers as nanoscale drug delivery systems for the delivery of drugs using enteral, parenteral and topical routes. In particular, we focus our attention on the emerging and promising routes such as oral, transdermal, ocular and transmucosal routes using dendrimers as delivery systems.
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Chen J, Shao R, Zhang XD, Chen C. Applications of nanotechnology for melanoma treatment, diagnosis, and theranostics. Int J Nanomedicine 2013; 8:2677-88. [PMID: 23926430 PMCID: PMC3728269 DOI: 10.2147/ijn.s45429] [Citation(s) in RCA: 76] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
Abstract
Melanoma is the most aggressive type of skin cancer and has very high rates of mortality. An early stage melanoma can be surgically removed, with a survival rate of 99%. However, metastasized melanoma is difficult to cure. The 5-year survival rates for patients with metastasized melanoma are still below 20%. Metastasized melanoma is currently treated by chemotherapy, targeted therapy, immunotherapy and radiotherapy. The outcome of most of the current therapies is far from optimistic. Although melanoma patients with a mutation in the oncogene v-Raf murine sarcoma viral oncogene homolog B1 (BRAF) have an initially higher positive response rate to targeted therapy, the majority develop acquired drug resistance after 6 months of the therapy. To increase treatment efficacy, early diagnosis, more potent pharmacological agents, and more effective delivery systems are urgently needed. Nanotechnology has been extensively studied for melanoma treatment and diagnosis, to decrease drug resistance, increase therapeutic efficacy, and reduce side effects. In this review, we summarize the recent progress on the development of various nanoparticles for melanoma treatment and diagnosis. Several common nanoparticles, including liposome, polymersomes, dendrimers, carbon-based nanoparticles, and human albumin, have been used to deliver chemotherapeutic agents, and small interfering ribonucleic acids (siRNAs) against signaling molecules have also been tested for the treatment of melanoma. Indeed, several nanoparticle-delivered drugs have been approved by the US Food and Drug Administration and are currently in clinical trials. The application of nanoparticles could produce side effects, which will need to be reduced so that nanoparticle-delivered drugs can be safely applied in the clinical setting.
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Affiliation(s)
- Jiezhong Chen
- School of Biomedical Sciences, University of Queensland, Brisbane, QLD, Australia.
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Cheng W, Ping Y, Zhang Y, Chuang KH, Liu Y. Magnetic resonance imaging (MRI) contrast agents for tumor diagnosis. JOURNAL OF HEALTHCARE ENGINEERING 2013; 4:23-45. [PMID: 23502248 DOI: 10.1260/2040-2295.4.1.23] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
This review focuses on MRI contrast agents for tumor diagnosis. Several types of low molecular weight Gd3+-based complexes and dextran-coated superparamagnetic iron oxide (SPIO) nanoparticles have been used for clinical tumor diagnosis as longitudinal relaxation time (T1) and transverse relaxation time (T2) MRI contrast agents, respectively. To further improve the sensitivity of MRI, new types of chelates for T1 MRI contrast agents and combination of low molecular weight T1 MRI contrast agents with different types of carriers have been investigated. Different types of materials for forming secure coating layers of SPIO and novel superparamagnetic particles with higher relaxivity values have been explored. Various types of ligands were applied to improve the capability to target tumor for both T1 and T2 contrast agents. Furthermore, MRI contrast agents for detection of tumor metabolism were also pursued.
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Affiliation(s)
- Weiren Cheng
- Institute of Materials Research and Engineering, Singapore Singapore Bioimaging Consortium, Singapore
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37
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The effects of an RGD-PAMAM dendrimer conjugate in 3D spheroid culture on cell proliferation, expression and aggregation. Biomaterials 2013; 34:2665-73. [DOI: 10.1016/j.biomaterials.2013.01.003] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2012] [Accepted: 01/01/2013] [Indexed: 12/18/2022]
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38
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Li G, Hu Z, Yin H, Zhang Y, Huang X, Wang S, Li W. A novel dendritic nanocarrier of polyamidoamine-polyethylene glycol-cyclic RGD for "smart" small interfering RNA delivery and in vitro antitumor effects by human ether-à-go-go-related gene silencing in anaplastic thyroid carcinoma cells. Int J Nanomedicine 2013; 8:1293-306. [PMID: 23569377 PMCID: PMC3615931 DOI: 10.2147/ijn.s41555] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
Abstract
The application of RNA interference techniques is promising in gene therapeutic approaches, especially for cancers. To improve safety and efficiency of small interfering RNA (siRNA) delivery, a triblock dendritic nanocarrier, polyamidoamine-polyethylene glycol-cyclic RGD (PAMAM-PEG-cRGD), was developed and studied as an siRNA vector targeting the human ether-à-go-go-related gene (hERG) in human anaplastic thyroid carcinoma cells. Structure characterization, particle size, zeta potential, and gel retardation assay confirmed that complete triblock components were successfully synthesized with effective binding capacity of siRNA in this triblock nanocarrier. Cytotoxicity data indicated that conjugation of PEG significantly alleviated cytotoxicity when compared with unmodified PAMAM. PAMAM-PEG-cRGD exerted potent siRNA cellular internalization in which transfection efficiency measured by flow cytometry was up to 68% when the charge ratio (N/P ratio) was 3.5. Ligand-receptor affinity together with electrostatic interaction should be involved in the nano-siRNA endocytosis mechanism and we then proved that attachment of cRGD enhanced cellular uptake via RGD-integrin recognition. Gene silencing was evaluated by reverse transcription polymerase chain reaction and PAMAM-PEG-cRGD-siRNA complex downregulated the expression of hERG to 26.3% of the control value. Furthermore, gene knockdown of hERG elicited growth suppression as well as activated apoptosis by means of abolishing vascular endothelial growth factor secretion and triggering caspase-3 cascade in anaplastic thyroid carcinoma cells. Our study demonstrates that this novel triblock polymer, PAMAM-PEG-cRGD, exhibits negligible cytotoxicity, effective transfection, “smart” cancer targeting, and therefore is a promising siRNA nanocarrier.
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Affiliation(s)
- Guanhua Li
- Department of Vascular and Thyroid Surgery, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, People's Republic of China
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39
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Goswami LN, Ma L, Cai Q, Sarma SJ, Jalisatgi SS, Hawthorne MF. cRGD peptide-conjugated icosahedral closo-B12(2-) core carrying multiple Gd3+-DOTA chelates for α(v)β3 integrin-targeted tumor imaging (MRI). Inorg Chem 2013; 52:1701-9. [PMID: 23391150 PMCID: PMC3593306 DOI: 10.1021/ic302340c] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Abstract
A vertex-differentiated icosahedral closo-B(12)(2-) core was utilized to construct a α(v)β(3) integrin receptor-targeted (via cRGD peptide) high payload MRI contrast agent (CA-12) carrying 11 copies of Gd(3+)-DOTA chelates attached to the closo-B(12)(2-) surface via suitable linkers. The resulting polyfunctional MRI contrast agent possessed a higher relaxivity value per-Gd compared to Omniscan, a small molecular contrast agent commonly used in clinical settings. The α(v)β(3) integrin receptor specificity of CA-12 was confirmed via in vitro cellular binding experiments and in vivo MRI of mice bearing human PC-3 prostate cancer xenografts. Integrin α(v)β(3)-positive MDA-MB-231 cells exhibited 300% higher uptake of CA-12 than α(v)β(3)-negative T47D cells. Serial T1-weighted MRI showed superior contrast enhancement of tumors by CA-12 compared to both a nontargeted 12-fold Gd(3+)-DOTA closomer control (CA-7) and Omniscan. Contrast enhancement by CA-12 persisted for 4 h postinjection, and subsequent enhancement of kidney tissue indicated a renal elimination route similar to Omniscan. No toxic effects of CA-12 were apparent in any mice for up to 24 h postinjection. Post-mortem ICP-OES analysis at 24 h detected no residual Gd in any of the tissue samples analyzed.
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Affiliation(s)
- Lalit N. Goswami
- International Institute of Nano and Molecular Medicine, School of Medicine, University of Missouri, Columbia, Missouri 65211-3450
| | - Lixin Ma
- International Institute of Nano and Molecular Medicine, School of Medicine, University of Missouri, Columbia, Missouri 65211-3450
| | - Quanyu Cai
- International Institute of Nano and Molecular Medicine, School of Medicine, University of Missouri, Columbia, Missouri 65211-3450
| | - Saurav J. Sarma
- International Institute of Nano and Molecular Medicine, School of Medicine, University of Missouri, Columbia, Missouri 65211-3450
| | - Satish S. Jalisatgi
- International Institute of Nano and Molecular Medicine, School of Medicine, University of Missouri, Columbia, Missouri 65211-3450
| | - M. Frederick Hawthorne
- International Institute of Nano and Molecular Medicine, School of Medicine, University of Missouri, Columbia, Missouri 65211-3450
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40
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Ulrich S, Dumy P, Boturyn D, Renaudet O. Engineering of biomolecules for sensing and imaging applications. J Drug Deliv Sci Technol 2013. [DOI: 10.1016/s1773-2247(13)50001-3] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
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41
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Gray WD, Wu RJ, Yin X, Zhou J, Davis ME, Luo Y. Dendrimeric bowties featuring hemispheric-selective decoration of ligands for microRNA-based therapy. Biomacromolecules 2012; 14:101-9. [PMID: 23145944 DOI: 10.1021/bm301393z] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
Dendrimers feature a defined number of terminal groups that may bind RNA or be functionalized with bioactive molecules. These competing uses of terminal groups may create an impasse if the requisite density of ligands depletes the number of terminal groups for binding sufficient RNA, or vice versa. A novel dendrimeric platform is needed that maintains high ligand density while retaining sufficient microRNA-binding terminal groups. Here we present a dendrimeric "bowtie" consisting of one-half devoted to microRNA binding and the other half to ligand presentation. We demonstrate its suitability as a transfection agent by delivering miR-126 to human vascular endothial cells (HUVECs) via polyarginine- and RGD-modified bowties and evaluating the downstream effects on proliferation and tube formation. Our findings indicate that the bowtie elicits desired responses and may possess superior delivery properties compared to nondecorated dendrimeric materials. The bowtie system thereby provides a new design model for developing dendrimeric delivery vehicles for RNAi therapeutics.
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Affiliation(s)
- Warren D Gray
- Department of Biomedical Engineering, College of Engineering, Peking University, Room 206, Fangzheng Building, 298 Chengfu Road, Haidian District, Beijing 100871, China
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42
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Neelgund GM, Oki A, Luo Z. Antimicrobial activity of CdS and Ag2S quantum dots immobilized on poly(amidoamine) grafted carbon nanotubes. Colloids Surf B Biointerfaces 2012; 100:215-21. [PMID: 22766300 PMCID: PMC3424272 DOI: 10.1016/j.colsurfb.2012.05.012] [Citation(s) in RCA: 60] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2012] [Revised: 05/09/2012] [Accepted: 05/11/2012] [Indexed: 11/24/2022]
Abstract
Herein we report the design of antimicrobial nanohybrids, f-MWCNTs-CdS and f-MWCNTs-Ag(2)S developed by covalent grafting of cationic hyperbranched dendritic polyamidoamine (PAMAM) onto multiwalled carbon nanotubes (MWCNTs) and successive deposition of CdS and Ag(2)S quantum dots (QDs). The CdS and Ag(2)S QDs were in situ deposited on PAMAM grafted MWCNTs instead of anchoring the pre-synthesized QDs. The fourth generation, amine terminated hyperbranched PAMAM was grafted on MWCNTs, which was achieved through repetitive reactions of Michael addition of methylmethacrylate to the surface amino groups and amidation of terminal ester groups with ethylenediamine. The covalent grafting of PAMAM onto MWCNTs and the consecutive conjugation of CdS and Ag(2)S QDs were characterized using Fourier transform infrared spectroscopy, elemental analysis, powder X-ray diffraction, Raman spectroscopy, transmission electron microscopy and energy dispersive spectroscopy. The antibacterial activity of f-MWCNTs-CdS and f-MWCNTs-Ag(2)S nanohybrids was evaluated against Escherichia coli, Pseudomonas aeruginosa and Staphylococcus aureus and the results were compared with the activity of carboxylated MWCNTs, PAMAM grafted MWCNTs, PAMAM dendrimer, and CdS and Ag(2)S QDs. It was found that the germicidal action of MWCNTs was enhanced by grafting of PAMAM, which was further improved with immobilization of CdS and Ag(2)S QDs.
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Affiliation(s)
- Gururaj M. Neelgund
- Department of Chemistry, Prairie View A&M University, Prairie View, TX 77446, USA
| | - Aderemi Oki
- Department of Chemistry, Prairie View A&M University, Prairie View, TX 77446, USA
| | - Zhiping Luo
- Microscopy and Imaging Center and Materials Science and Engineering Program, Texas A&M University, College Station, TX 77843, USA
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43
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Multivalent ligand: design principle for targeted therapeutic delivery approach. Ther Deliv 2012; 3:1171-87. [DOI: 10.4155/tde.12.99] [Citation(s) in RCA: 47] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
Abstract
Multivalent interactions of biological molecules play an important role in many biochemical events. A multivalent ligand comprises of multiple copies of ligands conjugated to scaffolds, allowing the simultaneous binding of multivalent ligands to multiple binding sites or receptors. Many research groups have successfully designed and synthesized multivalent ligands to increase the binding affinity, avidity and specificity of the ligand to the receptor. A multimeric ligand is a promising option for the specific treatment of diseases. In this review, the factors affecting multivalent interactions, including the size and shape of the ligand, geometry and an arrangement of ligands on the scaffold, linker length, thermodynamic, and kinetics of the interactions are discussed. Examples of the multivalent ligand applications for therapeutic delivery are also summarized.
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44
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Novel imaging chelates for drug discovery. Curr Opin Pharmacol 2012; 12:576-82. [PMID: 22884905 DOI: 10.1016/j.coph.2012.07.008] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2012] [Revised: 07/08/2012] [Accepted: 07/12/2012] [Indexed: 01/07/2023]
Abstract
The introduction of organic frameworks designed to coordinate metal ions or chelates to medical imaging has allowed for significant breakthroughs in the identification of many disease states. These identified disease states such as cancerous, cardiovascular and neurological, which provide excellent targets for novel drugs, and without the imaging chelates would certainly not have been discovered. In this article we will present a series of novel imaging chelates that have influenced drug discovery.
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45
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Liu J, Gray WD, Davis ME, Luo Y. Peptide- and saccharide-conjugated dendrimers for targeted drug delivery: a concise review. Interface Focus 2012; 2:307-24. [PMID: 23741608 PMCID: PMC3363024 DOI: 10.1098/rsfs.2012.0009] [Citation(s) in RCA: 58] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2012] [Accepted: 02/24/2012] [Indexed: 01/01/2023] Open
Abstract
Dendrimers comprise a category of branched materials with diverse functions that can be constructed with defined architectural and chemical structures. When decorated with bioactive ligands made of peptides and saccharides through peripheral chemical groups, dendrimer conjugates are turned into nanomaterials possessing attractive binding properties with the cognate receptors. At the cellular level, bioactive dendrimer conjugates can interact with cells with avidity and selectivity, and this function has particularly stimulated interests in investigating the targeting potential of dendrimer materials for the design of drug delivery systems. In addition, bioactive dendrimer conjugates have so far been studied for their versatile capabilities to enhance stability, solubility and absorption of various types of therapeutics. This review presents a brief discussion on three aspects of the recent studies to use peptide- and saccharide-conjugated dendrimers for drug delivery: (i) synthesis methods, (ii) cell- and tissue-targeting properties and (iii) applications of conjugated dendrimers in drug delivery nanodevices. With more studies to elucidate the structure-function relationship of ligand-dendrimer conjugates in transporting drugs, the conjugated dendrimers hold promise to facilitate targeted delivery and improve drug efficacy for discovery and development of modern pharmaceutics.
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Affiliation(s)
- Jie Liu
- Department of Biomedical Engineering, College of Engineering, Peking University, Room 206, Fangzheng Building, 298 Chengfu Road, Haidian District, Beijing 100871, People's Republic of China
| | - Warren D. Gray
- Department of Biomedical Engineering, College of Engineering, Peking University, Room 206, Fangzheng Building, 298 Chengfu Road, Haidian District, Beijing 100871, People's Republic of China
- The Wallace H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology and Emory University, 313 Ferst Drive, Room 2127, Atlanta, GA 30322-0535, USA
| | - Michael E. Davis
- The Wallace H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology and Emory University, 313 Ferst Drive, Room 2127, Atlanta, GA 30322-0535, USA
- Parker H. Petit Institute for Bioengineering and Bioscience, Georgia Institute of Technology, Atlanta, GA 30332, USA
- Division of Cardiology, Emory University School of Medicine, Atlanta, GA 30322, USA
| | - Ying Luo
- Department of Biomedical Engineering, College of Engineering, Peking University, Room 206, Fangzheng Building, 298 Chengfu Road, Haidian District, Beijing 100871, People's Republic of China
- National Engineering Laboratory for Regenerative and Implantable Medical Devices, Room 408, Building D, Guangzhou International Business Incubator, Guangzhou Science Park, Guangzhou 510663, People's Republic of China
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Kaminskas LM, Boyd BJ, Porter CJH. Dendrimer pharmacokinetics: the effect of size, structure and surface characteristics on ADME properties. Nanomedicine (Lond) 2012; 6:1063-84. [PMID: 21955077 DOI: 10.2217/nnm.11.67] [Citation(s) in RCA: 149] [Impact Index Per Article: 12.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
Dendrimers show increasing promise as drug-delivery vectors and can be generated with a wide range of scaffold structures, sizes and surface functionalities. To this point, the majority of studies of dendrimer-based drug-delivery systems have detailed pharmacodynamic outcomes, or have followed the pharmacokinetics of a solubilized or conjugated drug. By contrast, detailed commentary on the in vivo fate of the dendrimer carrier is less evident, even though the pharmacokinetics of the carrier will likely dictate both pharmacodynamic and toxicokinetic outcomes. In the current article, the influence of size, structure and surface functionality on the absorption, distribution, metabolism and elimination (ADME) properties of dendrimers have been examined and the implications of these findings for delivery system design are discussed.
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Affiliation(s)
- Lisa M Kaminskas
- Drug Delivery Disposition & Dynamics, Monash Institute of Pharmaceutical Sciences, Monash University. 381 Royal Parade, Parkville, VIC, 3052, Australia
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47
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Bunschoten A, Buckle T, Visser NL, Kuil J, Yuan H, Josephson L, Vahrmeijer AL, van Leeuwen FWB. Multimodal interventional molecular imaging of tumor margins and distant metastases by targeting αvβ3 integrin. Chembiochem 2012; 13:1039-45. [PMID: 22505018 DOI: 10.1002/cbic.201200034] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2012] [Indexed: 12/20/2022]
Abstract
α(v)β(3) integrin is involved in (tumor-induced) angiogenesis and is a promising candidate for the specific visualization of both primary tumors and of their distant metastases. Combination of radioactive and fluorescent imaging labels in a single multimodal, or rather hybrid, RGD-based imaging agent enables integration of pre-, intra-, and postoperative angiogenesis imaging. A hybrid imaging agent targeting the α(v)β(3) integrin--(111)In-MSAP-RGD (MSAP = multifunctional single-attachment-point reagent), which contains a targeting moiety, a pentetic acid (DTPA) chelate, and a cyanine dye--was evaluated for its potential value in combined lesion detection and interventional molecular imaging in a 4T1 mouse breast cancer model. SPECT/CT and fluorescence imaging were used to visualize the tumor in vivo. Tracer distribution was evaluated ex vivo down to the microscopic level. The properties of (111)In-MSAP-RGD were compared with those of (111)In-DTPA-RGD. Biodistribution studies revealed a prolonged retention and increased tumor accumulation of (111)In-MSAP-RGD relative to (111)In-DTPA-RGD. With (111)In-MSAP-RGD, identical features could be visualized preoperatively (SPECT/CT) and intraoperatively (fluorescence imaging). As well as the primary tumor, (111)In-MSAP-RGD also enabled detection and accurate excision of distant metastases in the head and neck region of the mice. Therefore, the hybrid RGD derivative (111)In-MSAP-RGD shows potential in preoperative planning and fluorescence-based surgical intervention.
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Affiliation(s)
- Anton Bunschoten
- Interventional Molecular Imaging, Department of Radiology, Leiden University Medical Center, 2300 RC Leiden, The Netherlands
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48
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Kuil J, Buckle T, Oldenburg J, Yuan H, Josephson L, van Leeuwen FW. Hybrid peptide dendrimers for imaging of chemokine receptor 4 (CXCR4) expression. Mol Pharm 2011; 8:2444-53. [PMID: 22085282 PMCID: PMC3711081 DOI: 10.1021/mp200401p] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
The chemokine receptor 4 (CXCR4), which is overexpressed in many types of cancer, is an emerging target in the field of molecular imaging and therapeutics. The CXCR4 binding of several peptides, including the cyclic Ac-TZ14011, has already been validated. In this study mono-, di- and tetrameric Ac-TZ14011-containing dendrimers were prepared and functionalized with a multimodal (hybrid) label, consisting of a Cy5.5-like fluorophore and a DTPA chelate. Confocal microscopy revealed that all three dendrimers were membrane bound at 4 °C, consistent with CXCR4 binding in vitro. The unlabeled dimer and tetramer had a somewhat lower affinity for CXCR4 than the unlabeled monomer. However, when labeled with the multimodal label the CXCR4 affinity of the dimer and tetramer was considerably higher compared to that of the labeled monomer. On top of that, biodistribution studies revealed that the additional peptides in the dimer and tetramer reduced nonspecific muscle uptake. Thus, multimerization of the cyclic Ac-TZ14011 peptide reduces the negative influence of the multimodal label on the receptor affinity and the biodistribution.
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Affiliation(s)
- Joeri Kuil
- Division of Diagnostic Oncology, the Netherlands Cancer Institute Antoni van Leeuwenhoek Hospital, 1066 CX Amsterdam, The Netherlands
| | - Tessa Buckle
- Division of Diagnostic Oncology, the Netherlands Cancer Institute Antoni van Leeuwenhoek Hospital, 1066 CX Amsterdam, The Netherlands
| | - Joppe Oldenburg
- Division of Diagnostic Oncology, the Netherlands Cancer Institute Antoni van Leeuwenhoek Hospital, 1066 CX Amsterdam, The Netherlands
| | - Hushan Yuan
- Center for Molecular Imaging Research, Massachusetts General Hospital and Harvard Medical School, Building 149, 13th Street, Charlestown, MA 02129, USA
| | - Lee Josephson
- Center for Molecular Imaging Research, Massachusetts General Hospital and Harvard Medical School, Building 149, 13th Street, Charlestown, MA 02129, USA
| | - Fijs W.B. van Leeuwen
- Division of Diagnostic Oncology, the Netherlands Cancer Institute Antoni van Leeuwenhoek Hospital, 1066 CX Amsterdam, The Netherlands
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De M, Chou SS, Joshi HM, Dravid VP. Hybrid magnetic nanostructures (MNS) for magnetic resonance imaging applications. Adv Drug Deliv Rev 2011; 63:1282-99. [PMID: 21851844 DOI: 10.1016/j.addr.2011.07.001] [Citation(s) in RCA: 46] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2011] [Revised: 06/29/2011] [Accepted: 07/02/2011] [Indexed: 12/13/2022]
Abstract
The development of MRI contrast agents has experienced its version of the gilded age over the past decade, thanks largely to the rapid advances in nanotechnology. In addition to progress in single mode contrast agents, which ushered in unprecedented R(1) or R(2) sensitivities, there has also been a boon in the development of agents covering more than one mode of detection. These include T(1)-PET, T(2)-PET T(1)-optical, T(2)-optical, T(1)-T(2) agents and many others. In this review, we describe four areas which we feel have experienced particular growth due to nanotechnology, specifically T(2) magnetic nanostructure development, T(1)/T(2)-optical dual mode agents, and most recently the T(1)-T(2) hybrid imaging systems. In each of these systems, we describe applications including in vitro, in vivo usage and assay development. In all, while the benefits and drawbacks of most MRI contrast agents depend on the application at hand, the recent development in multimodal nanohybrids may curtail the shortcomings of single mode agents in diagnostic and clinical settings by synergistically incorporating functionality. It is hoped that as nanotechnology advances over the next decade, it will produce agents with increased diagnostics and assay relevant capabilities in streamlined packages that can meaningfully improve patient care and prognostics. In this review article, we focus on T(2) materials, its surface functionalization and coupling with optical and/or T(1) agents.
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50
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Wan TC, Tosh DK, Du L, Gizewski ET, Jacobson KA, Auchampach JA. Polyamidoamine (PAMAM) dendrimer conjugate specifically activates the A3 adenosine receptor to improve post-ischemic/reperfusion function in isolated mouse hearts. BMC Pharmacol 2011; 11:11. [PMID: 22039965 PMCID: PMC3247180 DOI: 10.1186/1471-2210-11-11] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2011] [Accepted: 10/31/2011] [Indexed: 02/07/2023] Open
Abstract
Background When stimulated by small molecular agonists, the A3 adenosine receptor (AR) mediates cardioprotective effects without inducing detrimental hemodynamic side effects. We have examined pharmacologically the protective properties of a multivalent dendrimeric conjugate of a nucleoside as a selective multivalent agonist for the mouse A3AR. Results A PAMAM dendrimer fully substituted by click chemistry on its peripheral groups with 64 moieties of a nucleoside agonist was shown to be potent and selective in binding to the mouse A3AR and effective in cardioprotection in an isolated mouse heart model of ischemia/reperfusion (I/R) injury. This conjugate MRS5246 and a structurally related model compound MRS5233 displayed binding Ki values of 0.04 and 3.94 nM, respectively, and were potent in in vitro functional assays to inhibit cAMP production. A methanocarba (bicyclo[3.1.0]hexane) ring system in place of ribose maintained a North conformation that is preferred at the A3AR. These analogues also contained a triazole linker along with 5'-N-methyl-carboxamido and 2-alkynyl substitution, previously shown to be associated with species-independent A3AR selectivity. Both MRS5233 and MRS5246 (1 and 10 nM) were effective at increasing functional recovery of isolated mouse hearts after 20 min ischemia followed by 45 min reperfusion. A statistically significant greater improvement in the left ventricular developed pressure (LVDP) by MRS5246 compared to MRS5233 occurred when the hearts were observed throughout reperfusion. Unliganded PAMAM dendrimer alone did not have any effect on functional recovery of isolated perfused mouse hearts. 10 nM MRS5246 did not improve functional recovery after I/R in hearts from A3AR gene "knock-out" (A3KO) mice compared to control, indicating the effects of MRS5246 were A3AR-specific. Conclusions Covalent conjugation to a versatile drug carrier enhanced the functional potency and selectivity at the mouse A3AR and maintained the cardioprotective properties. Thus, this large molecular weight conjugate is not prevented from extravasation through the coronary microvasculature.
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Affiliation(s)
- Tina C Wan
- Department of Pharmacology/Toxicology and the Cardiovascular Center, Medical College of Wisconsin, 8701 Watertown Plank Road, Milwaukee, WI 53226, USA
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