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Lin KN, Grandhi TSP, Goklany S, Rege K. Chemotherapeutic Drug-Conjugated Microbeads Demonstrate Preferential Binding to Methylated Plasmid DNA. Biotechnol J 2018; 13:e1700701. [DOI: 10.1002/biot.201700701] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2017] [Revised: 03/25/2018] [Indexed: 11/08/2022]
Affiliation(s)
- Kevin N. Lin
- Chemical Engineering, School for Engineering of Matter, Transport, and Energy, Arizona State University; Tempe AZ 85287 USA
| | - Taraka Sai Pavan Grandhi
- Biomedical Engineering, School of Biological and Health Systems Engineering, Arizona State University; Tempe AZ 85287 USA
| | - Sheba Goklany
- Chemical Engineering, School for Engineering of Matter, Transport, and Energy, Arizona State University; Tempe AZ 85287 USA
| | - Kaushal Rege
- Chemical Engineering, School for Engineering of Matter, Transport, and Energy, Arizona State University; Tempe AZ 85287 USA
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2
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Dobos A, Grandhi TSP, Godeshala S, Meldrum DR, Rege K. Parallel fabrication of macroporous scaffolds. Biotechnol Bioeng 2018; 115:1729-1742. [DOI: 10.1002/bit.26593] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2017] [Revised: 03/06/2018] [Accepted: 03/16/2018] [Indexed: 02/06/2023]
Affiliation(s)
- Andrew Dobos
- Biomedical Engineering; Arizona State University; Tempe Arizona
| | | | | | - Deirdre R. Meldrum
- Center for Biosignatures Discovery Automation, Biodesign Institute; Arizona State University; Tempe Arizona
| | - Kaushal Rege
- Chemical Engineering; Arizona State University; Tempe Arizona
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3
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Cui W, He M, Mu L, Lin Z, Wang Y, Pang W, Reed M, Duan X. Cellphone-Enabled Microwell-Based Microbead Aggregation Assay for Portable Biomarker Detection. ACS Sens 2018; 3:432-440. [PMID: 29350517 DOI: 10.1021/acssensors.7b00866] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Quantitative biomarker detection methods featured with rapidity, high accuracy, and label-free are demonstrated for the development of point-of-care (POC) technologies or "beside" diagnostics. Microbead aggregation via protein-specific linkage provides an effective approach for selective capture of biomarkers from the samples, and can directly readout the presence and amount of the targets. However, sensors or microfluidic analyzers that can accurately quantify the microbead aggregation are scared. In this work, we demonstrate a microwell-based microbeads analyzing system, by which online manipulations of microbeads including trapping, arraying, and rotations can be realized, providing a series of microfluidic approaches to layout the aggregated microbeads for further convenient characterizations. Prostate specific antigen is detected using the proposed system, demonstrating the limit of detection as low as 0.125 ng/mL (3.67 pM). A two-step reaction kinetics model is proposed for the first time to explain the dynamic process of microbeads aggregation. The developed microbeads aggregation analysis system has the advantages of label-free detection, high throughput, and low cost, showing great potential for portable biomarker detection.
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Affiliation(s)
- Weiwei Cui
- State Key Laboratory of Precision Measuring Technology & Instruments, College of Precision Instrument and Optoelectronics Engineering, Tianjin University, Tianjin 300072, China
- Department of Electrical Engineering and Yale University, New Haven, Connecticut 06520, United States
| | - Meihang He
- State Key Laboratory of Precision Measuring Technology & Instruments, College of Precision Instrument and Optoelectronics Engineering, Tianjin University, Tianjin 300072, China
| | - Luye Mu
- Department of Electrical Engineering and Yale University, New Haven, Connecticut 06520, United States
| | - Zuzeng Lin
- State Key Laboratory of Precision Measuring Technology & Instruments, College of Precision Instrument and Optoelectronics Engineering, Tianjin University, Tianjin 300072, China
| | - Yanyan Wang
- State Key Laboratory of Precision Measuring Technology & Instruments, College of Precision Instrument and Optoelectronics Engineering, Tianjin University, Tianjin 300072, China
| | - Wei Pang
- State Key Laboratory of Precision Measuring Technology & Instruments, College of Precision Instrument and Optoelectronics Engineering, Tianjin University, Tianjin 300072, China
| | - Mark Reed
- Department of Electrical Engineering and Yale University, New Haven, Connecticut 06520, United States
| | - Xuexin Duan
- State Key Laboratory of Precision Measuring Technology & Instruments, College of Precision Instrument and Optoelectronics Engineering, Tianjin University, Tianjin 300072, China
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4
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Raravikar N, Dobos A, Narayanan E, Grandhi TSP, Mishra S, Rege K, Goryll M. Investigation into Pseudo-Capacitance Behavior of Glycoside-Containing Hydrogels. ACS APPLIED MATERIALS & INTERFACES 2017; 9:3554-3561. [PMID: 28067487 DOI: 10.1021/acsami.6b11113] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Electrochemical pseudocapacitors are an attractive choice for energy storage applications because they offer higher energy densities than electrostatic or electric double layer capacitors. They also offer higher power densities in shorter durations of time, as compared to batteries. Recent efforts on pseudocapacitors include biocompatible hydrogel electrolytes and transition metal electrodes for implantable energy storage applications. Pseudocapacitive behavior in these devices has been attributed to the redox reactions that occur within the electric double layer, which is formed at the electrode-electrolyte interface. In the present study, we describe a detailed investigation on redox reactions responsible for pseudocapacitive behavior in glycoside-containing hydrogel formulations. Pseudocapacitive behavior was compared among various combinations of biocompatible hydrogel electrolytes, using carbon tape electrodes and transition metal electrodes based on fluorine-doped tin oxide. The hydrogels demonstrated a pseudocapacitive response only in the presence of transition metal electrodes but not in the presence of carbon electrodes. Hydrogels containing amine moieties showed greater energy storage than gels based purely on hydroxyl functional groups. Furthermore, energy storage increased with greater amine content in these hydrogels. We claim that the redox reactions in hydrogels are largely based on Lewis acid-base interactions, facilitated by amine and hydroxyl side groups along the electrolyte chain backbones, as well as hydroxylation of electrode surfaces. Water plays an important role in these reactions, not only in terms of providing ionic radicals but also in assisting ion transport. This understanding of redox reactions will help determine the choice of transition metal electrodes, Lewis acid-base pairs in electrolytes, and medium for ionic transport in future biocompatible pseudocapacitors.
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Affiliation(s)
- Nachiket Raravikar
- School of Engineering of Matter, Transport and Energy, Arizona State University , Tempe, Arizona 85287, United States
- School of Engineering of Matter, Transport and Energy, Arizona State University , Tempe, Arizona 85287, United States
| | - Andrew Dobos
- School of Biological and Health Systems Engineering, Arizona State University , Tempe, Arizona 85287, United States
| | - Eshwaran Narayanan
- School of Engineering of Matter, Transport and Energy, Arizona State University , Tempe, Arizona 85287, United States
| | - Taraka Sai Pavan Grandhi
- School of Engineering of Matter, Transport and Energy, Arizona State University , Tempe, Arizona 85287, United States
| | - Saurabh Mishra
- School of Electrical, Computer and Energy Engineering, Arizona State University , Tempe, Arizona 85287, United States
| | - Kaushal Rege
- School of Engineering of Matter, Transport and Energy, Arizona State University , Tempe, Arizona 85287, United States
| | - Michael Goryll
- School of Electrical, Computer and Energy Engineering, Arizona State University , Tempe, Arizona 85287, United States
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5
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Aminoglycoside-derived amphiphilic nanoparticles for molecular delivery. Colloids Surf B Biointerfaces 2016; 146:924-37. [PMID: 27472455 DOI: 10.1016/j.colsurfb.2016.06.028] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2015] [Revised: 06/14/2016] [Accepted: 06/16/2016] [Indexed: 01/14/2023]
Abstract
The development of effective drug carriers can lead to improved outcomes in a variety of disease conditions. Aminoglycosides have been used as antibacterial therapeutics, and are attractive as monomers for the development of polymeric materials in various applications. Here, we describe the development of novel aminoglycoside-derived amphiphilic nanoparticles for drug delivery, with an eye towards ablation of cancer cells. The aminoglycoside paromomycin was first cross-linked with resorcinol diglycidyl ether leading to the formation of a poly (amino ether), PAE. PAE molecules were further derivatized with methoxy-terminated poly(ethylene glycol) or mPEG resulting in the formation of mPEG-PAE polymer, which self-assembled to form nanoparticles. Formation of the mPEG-PAE amphiphile was characterized using (1)H NMR, (13)C NMR, gel permeation chromatography (GPC) and FTIR spectroscopy. Self-assembly of the polymer into nanoparticles was characterized using dynamic light scattering, zeta potential analyses, atomic force microscopy (AFM) and the pyrene fluorescence assay. mPEG-PAE nanoparticles were able to carry significant amounts of doxorubicin (DOX), presumably by means of hydrophobic interactions between the drug and the core. Cell-based studies indicated that mPEG-PAE nanoparticles, loaded with doxorubicin, were able to induce significant loss in viabilities of PC3 human prostate cancer, MDA-MB-231 human breast cancer, and MB49 murine bladder cancer cells; empty nanoparticles resulted in negligible losses of cell viability under the conditions investigated. Taken together, our results indicate that the mPEG-PAE nanoparticle platform is attractive for drug delivery in different applications, including cancer.
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Godeshala S, Nitiyanandan R, Thompson B, Goklany S, Nielsen DR, Rege K. Folate receptor-targeted aminoglycoside-derived polymers for transgene expression in cancer cells. Bioeng Transl Med 2016; 1:220-231. [PMID: 29313013 PMCID: PMC5675079 DOI: 10.1002/btm2.10038] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2016] [Revised: 09/02/2016] [Accepted: 09/13/2016] [Indexed: 12/25/2022] Open
Abstract
Targeted delivery of anticancer therapeutics can potentially overcome the limitations associated with current chemotherapeutic regimens. Folate receptors are overexpressed in several cancers, including ovarian, triple-negative breast and bladder cancers, making them attractive for targeted delivery of nucleic acid therapeutics to these tumors. This work describes the synthesis, characterization and evaluation of folic acid-conjugated, aminoglycoside-derived polymers for targeted delivery of transgenes to breast and bladder cancer cell lines. Transgene expression was significantly higher with FA-conjugated aminoglycoside-derived polymers than with Lipofectamine, and these polymers demonstrated minimal cytotoxicty. Competitive inhibition using free folic acid significantly reduced transgene expression efficacy of folate-targeted polymers, suggesting a role for folate receptor-mediated uptake. High efficacy FA-targeted polymers were employed to deliver a plasmid expressing the TRAIL protein, which induced death in cancer cells. These results indicate that FA-conjugated aminoglycoside-derived polymers are promising for targeted delivery of nucleic acids to cancer cells that overexpress folate receptors.
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Affiliation(s)
| | | | - Brian Thompson
- Chemical EngineeringArizona State UniversityTempeAZ85287
| | - Sheba Goklany
- Chemical EngineeringArizona State UniversityTempeAZ85287
| | | | - Kaushal Rege
- Chemical EngineeringArizona State UniversityTempeAZ85287
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7
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Miryala B, Zhen Z, Potta T, Breneman CM, Rege K. Parallel Synthesis and Quantitative Structure–Activity Relationship (QSAR) Modeling of Aminoglycoside-Derived Lipopolymers for Transgene Expression. ACS Biomater Sci Eng 2015; 1:656-668. [DOI: 10.1021/acsbiomaterials.5b00045] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Bhavani Miryala
- Chemical
Engineering, School for Engineering of Matter, Transport, and Energy, Arizona State University, Tempe, Arizona 85287-6106, United States
| | - Zhuo Zhen
- Department
of Chemistry and Chemical Biology, Rensselaer Polytechnic Institute, Troy, New York 12180, United States
| | - Thrimoorthy Potta
- Chemical
Engineering, School for Engineering of Matter, Transport, and Energy, Arizona State University, Tempe, Arizona 85287-6106, United States
| | - Curt M. Breneman
- Department
of Chemistry and Chemical Biology, Rensselaer Polytechnic Institute, Troy, New York 12180, United States
| | - Kaushal Rege
- Chemical
Engineering, School for Engineering of Matter, Transport, and Energy, Arizona State University, Tempe, Arizona 85287-6106, United States
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Miryala B, Feng Y, Omer A, Potta T, Rege K. Quaternization enhances the transgene expression efficacy of aminoglycoside-derived polymers. Int J Pharm 2015; 489:18-29. [DOI: 10.1016/j.ijpharm.2015.04.026] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2015] [Revised: 04/10/2015] [Accepted: 04/12/2015] [Indexed: 01/24/2023]
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