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Alves CPA, Prazeres DMF, Monteiro GA. Minicircle Biopharmaceuticals–An Overview of Purification Strategies. FRONTIERS IN CHEMICAL ENGINEERING 2021. [DOI: 10.3389/fceng.2020.612594] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023] Open
Abstract
Minicircles are non-viral delivery vectors with promising features for biopharmaceutical applications. These vectors are plasmid-derived circular DNA molecules that are obtained in vivo in Escherichia coli by the intramolecular recombination of a parental plasmid, which generates a minicircle containing the eukaryotic therapeutic cassette of interest and a miniplasmid containing the prokaryotic backbone. The production process results thus in a complex mixture, which hinders the isolation of minicircle molecules from other DNA molecules. Several strategies have been proposed over the years to meet the challenge of purifying and obtaining high quality minicircles in compliance with the regulatory guidelines for therapeutic use. In minicircle purification, the characteristics of the strain and parental plasmid used have a high impact and strongly affect the purification strategy that can be applied. This review summarizes the different methods developed so far, focusing not only on the purification method itself but also on its dependence on the upstream production strategy used.
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Chu W, Prodromou R, Day KN, Schneible JD, Bacon KB, Bowen JD, Kilgore RE, Catella CM, Moore BD, Mabe MD, Alashoor K, Xu Y, Xiao Y, Menegatti S. Peptides and pseudopeptide ligands: a powerful toolbox for the affinity purification of current and next-generation biotherapeutics. J Chromatogr A 2020; 1635:461632. [PMID: 33333349 DOI: 10.1016/j.chroma.2020.461632] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2020] [Revised: 10/14/2020] [Accepted: 10/15/2020] [Indexed: 02/08/2023]
Abstract
Following the consolidation of therapeutic proteins in the fight against cancer, autoimmune, and neurodegenerative diseases, recent advancements in biochemistry and biotechnology have introduced a host of next-generation biotherapeutics, such as CRISPR-Cas nucleases, stem and car-T cells, and viral vectors for gene therapy. With these drugs entering the clinical pipeline, a new challenge lies ahead: how to manufacture large quantities of high-purity biotherapeutics that meet the growing demand by clinics and biotech companies worldwide. The protein ligands employed by the industry are inadequate to confront this challenge: while featuring high binding affinity and selectivity, these ligands require laborious engineering and expensive manufacturing, are prone to biochemical degradation, and pose safety concerns related to their bacterial origin. Peptides and pseudopeptides make excellent candidates to form a new cohort of ligands for the purification of next-generation biotherapeutics. Peptide-based ligands feature excellent target biorecognition, low or no toxicity and immunogenicity, and can be manufactured affordably at large scale. This work presents a comprehensive and systematic review of the literature on peptide-based ligands and their use in the affinity purification of established and upcoming biological drugs. A comparative analysis is first presented on peptide engineering principles, the development of ligands targeting different biomolecular targets, and the promises and challenges connected to the industrial implementation of peptide ligands. The reviewed literature is organized in (i) conventional (α-)peptides targeting antibodies and other therapeutic proteins, gene therapy products, and therapeutic cells; (ii) cyclic peptides and pseudo-peptides for protein purification and capture of viral and bacterial pathogens; and (iii) the forefront of peptide mimetics, such as β-/γ-peptides, peptoids, foldamers, and stimuli-responsive peptides for advanced processing of biologics.
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Affiliation(s)
- Wenning Chu
- Department of Chemical and Biomolecular Engineering, North Carolina State University, 911 Partners Way room 2-009, Raleigh, NC 27606
| | - Raphael Prodromou
- Department of Chemical and Biomolecular Engineering, North Carolina State University, 911 Partners Way room 2-009, Raleigh, NC 27606
| | - Kevin N Day
- Department of Chemical and Biomolecular Engineering, North Carolina State University, 911 Partners Way room 2-009, Raleigh, NC 27606
| | - John D Schneible
- Department of Chemical and Biomolecular Engineering, North Carolina State University, 911 Partners Way room 2-009, Raleigh, NC 27606
| | - Kaitlyn B Bacon
- Department of Chemical and Biomolecular Engineering, North Carolina State University, 911 Partners Way room 2-009, Raleigh, NC 27606
| | - John D Bowen
- Department of Chemical and Biomolecular Engineering, North Carolina State University, 911 Partners Way room 2-009, Raleigh, NC 27606
| | - Ryan E Kilgore
- Department of Chemical and Biomolecular Engineering, North Carolina State University, 911 Partners Way room 2-009, Raleigh, NC 27606
| | - Carly M Catella
- Department of Chemical and Biomolecular Engineering, North Carolina State University, 911 Partners Way room 2-009, Raleigh, NC 27606
| | - Brandyn D Moore
- Department of Chemical and Biomolecular Engineering, North Carolina State University, 911 Partners Way room 2-009, Raleigh, NC 27606
| | - Matthew D Mabe
- Department of Chemical and Biomolecular Engineering, North Carolina State University, 911 Partners Way room 2-009, Raleigh, NC 27606
| | - Kawthar Alashoor
- Department of Biochemistry and Biophysics, University of Rochester, Rochester, NY 14642
| | - Yiman Xu
- College of Material Science and Engineering, Donghua University, 201620 Shanghai, People's Republic of China
| | - Yuanxin Xiao
- College of Textile, Donghua University, Songjiang District, Shanghai, 201620, People's Republic of China
| | - Stefano Menegatti
- Department of Chemical and Biomolecular Engineering, North Carolina State University, 911 Partners Way room 2-009, Raleigh, NC 27606.
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3
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Huang R, Cui YC, Wei XH, Pan CS, Li Q, He SY, Fan JY, Han JY. A novel traditional Chinese medicine ameliorates fatigue-induced cardiac hypertrophy and dysfunction via regulation of energy metabolism. Am J Physiol Heart Circ Physiol 2019; 316:H1378-H1388. [PMID: 30951366 DOI: 10.1152/ajpheart.00731.2018] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
Prolonged exercise and exercise training can adversely affect cardiac function in some individuals. QiShenYiQi Pills (QSYQ), which are a compound Chinese medicine, have been previously shown to improve pressure overload-induced cardiac hypertrophy. We hypothesized that QSYQ can ameliorate as well the fatigue-induced cardiac hypertrophy. This study was to test this hypothesis and underlying mechanism with a focus on its role in energy regulation. Male Sprague-Dawley rats were used to establish exercise adaptation and fatigue model on a motorized rodent treadmill. Echocardiographic analysis and heart function test were performed to assess heart systolic function. Food-intake weight/body weight and heart weight/body weight were assessed, and hematoxylin and eosin staining and immunofluorescence staining of myocardium sections were performed. ATP synthase expression and activity and ATP, ADP, and AMP levels were assessed using Western blot and ELISA. Expression of proteins related to energy metabolism and IGF-1R signaling was determined using Western blot. QSYQ attenuated the food-intake weight/body weight decrease, improved myocardial structure and heart function, and restored the expression and distribution of myocardial connexin 43 after fatigue, concomitant with an increased ATP production and a restoration of metabolism-related protein expression. QSYQ upgraded the expression of IGF-1R, P-AMPK/AMPK, peroxisome proliferator-activated receptor-γ coactivator-1α, nuclear respiratory factor-1, P-phosphatidylinositol 3-kinase (PI3K)/PI3K, and P-Akt/Akt thereby attenuated the dysregulation of IGF-1R signaling after fatigue. QSYQ relieved fatigue-induced cardiac hypertrophy and enhanced heart function, which is correlated with its potential to improve energy metabolism by regulating IGF-1R signaling. NEW & NOTEWORTHY Prolonged exercise may impact some people leading to pathological cardiac hypertrophy. This study using an animal model of fatigue-induced cardiac hypertrophy provides evidence showing the potential of QiShenYiQi Pills, a novel traditional Chinese medicine, to prevent the cardiac adaptive hypertrophy from development to pathological hypertrophy and demonstrates that this effect is correlated with its capacity for regulating energy metabolism through interacting with insulin-like growth factor-1 receptor.
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Affiliation(s)
- Rong Huang
- Department of Integration of Chinese and Western Medicine, School of Basic Medical Sciences, Peking University , Beijing , China.,Tasly Microcirculation Research Center, Peking University Health Science Center , Beijing , China.,State Key Laboratory of Core Technology in Innovative Chinese Medicine , Beijing , China.,Key Laboratory of Stasis and Phlegm, State Administration of Traditional Chinese Medicine of the People's Republic of China , Beijing , China.,Beijing Laboratory of Integrative Microangiopathy , Beijing , China
| | - Yuan-Chen Cui
- Tasly Microcirculation Research Center, Peking University Health Science Center , Beijing , China.,State Key Laboratory of Core Technology in Innovative Chinese Medicine , Beijing , China.,Key Laboratory of Stasis and Phlegm, State Administration of Traditional Chinese Medicine of the People's Republic of China , Beijing , China.,Beijing Laboratory of Integrative Microangiopathy , Beijing , China
| | - Xiao-Hong Wei
- Department of Integration of Chinese and Western Medicine, School of Basic Medical Sciences, Peking University , Beijing , China.,Tasly Microcirculation Research Center, Peking University Health Science Center , Beijing , China.,State Key Laboratory of Core Technology in Innovative Chinese Medicine , Beijing , China.,Key Laboratory of Stasis and Phlegm, State Administration of Traditional Chinese Medicine of the People's Republic of China , Beijing , China.,Beijing Laboratory of Integrative Microangiopathy , Beijing , China
| | - Chun-Shui Pan
- Tasly Microcirculation Research Center, Peking University Health Science Center , Beijing , China.,State Key Laboratory of Core Technology in Innovative Chinese Medicine , Beijing , China.,Key Laboratory of Stasis and Phlegm, State Administration of Traditional Chinese Medicine of the People's Republic of China , Beijing , China.,Beijing Laboratory of Integrative Microangiopathy , Beijing , China
| | - Quan Li
- Tasly Microcirculation Research Center, Peking University Health Science Center , Beijing , China.,State Key Laboratory of Core Technology in Innovative Chinese Medicine , Beijing , China.,Key Laboratory of Stasis and Phlegm, State Administration of Traditional Chinese Medicine of the People's Republic of China , Beijing , China.,Beijing Laboratory of Integrative Microangiopathy , Beijing , China
| | - Shu-Ya He
- Department of Integration of Chinese and Western Medicine, School of Basic Medical Sciences, Peking University , Beijing , China.,Tasly Microcirculation Research Center, Peking University Health Science Center , Beijing , China.,State Key Laboratory of Core Technology in Innovative Chinese Medicine , Beijing , China.,Key Laboratory of Stasis and Phlegm, State Administration of Traditional Chinese Medicine of the People's Republic of China , Beijing , China.,Beijing Laboratory of Integrative Microangiopathy , Beijing , China
| | - Jing-Yu Fan
- Tasly Microcirculation Research Center, Peking University Health Science Center , Beijing , China.,Beijing Laboratory of Integrative Microangiopathy , Beijing , China
| | - Jing-Yan Han
- Department of Integration of Chinese and Western Medicine, School of Basic Medical Sciences, Peking University , Beijing , China.,Tasly Microcirculation Research Center, Peking University Health Science Center , Beijing , China.,State Key Laboratory of Core Technology in Innovative Chinese Medicine , Beijing , China.,Key Laboratory of Stasis and Phlegm, State Administration of Traditional Chinese Medicine of the People's Republic of China , Beijing , China.,Beijing Laboratory of Integrative Microangiopathy , Beijing , China
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4
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Cui YC, Pan CS, Yan L, Li L, Hu BH, Chang X, Liu YY, Fan JY, Sun K, -Li Q, Han JY. Ginsenoside Rb1 protects against ischemia/reperfusion-induced myocardial injury via energy metabolism regulation mediated by RhoA signaling pathway. Sci Rep 2017; 7:44579. [PMID: 28327605 PMCID: PMC5361119 DOI: 10.1038/srep44579] [Citation(s) in RCA: 45] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2016] [Accepted: 02/10/2017] [Indexed: 11/23/2022] Open
Abstract
Cardiac ischemia and reperfusion (I/R) injury remains a challenge for clinicians. Ginsenoside Rb1 (Rb1) has been reported to have the ability to attenuate I/R injury, but its effect on energy metabolism during cardiac I/R and the underlying mechanism remain unknown. In this study, we detected the effect of Rb1 on rat myocardial blood flow, myocardial infarct size, cardiac function, velocity of venule red blood cell, myocardial structure and apoptosis, energy metabolism and change in RhoA signaling pathway during cardiac I/R injury. In addition, the binding affinity of RhoA to Rb1 was detected using surface plasmon resonance (SPR). Results showed that Rb1 treatment at 5 mg/kg/h protected all the cardiac injuries induced by I/R, including damaged myocardial structure, decrease in myocardial blood flow, impaired heart function and microcirculation, cardiomyocyte apoptosis, myocardial infarction and release of myocardial cTnI. Rb1 also inhibited the activation of RhoA signaling pathway and restored the production of ATP during cardiac I/R. Moreover, SPR assay showed that Rb1 was able to bind to RhoA in a dose-dependent manner. These results indicate that Rb1 may prevent I/R-induced cardiac injury by regulation of RhoA signaling pathway, and may serve as a potential regime to improve percutaneous coronary intervention outcome.
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Affiliation(s)
- Yuan-Chen Cui
- Department of Integration of Chinese and Western Medicine, School of Basic Medical Sciences, Peking University, Beijing 100191, China.,Tasly Microcirculation Research Center, Peking University Health Science Center, Beijing 100191, China.,Key Laboratory of Microcirculation, State Administration of Traditional Chinese Medicine of the People's Republic of China, Beijing 100191, China.,Key Laboratory of Stasis and Phlegm, State Administration of Traditional Chinese Medicine of the People's Republic of China, Beijing 100191, China.,Beijing Laboratory of Integrative Microangiopathy, Beijing 100191, China
| | - Chun-Shui Pan
- Tasly Microcirculation Research Center, Peking University Health Science Center, Beijing 100191, China.,Key Laboratory of Microcirculation, State Administration of Traditional Chinese Medicine of the People's Republic of China, Beijing 100191, China.,Key Laboratory of Stasis and Phlegm, State Administration of Traditional Chinese Medicine of the People's Republic of China, Beijing 100191, China.,Beijing Laboratory of Integrative Microangiopathy, Beijing 100191, China
| | - Li Yan
- Tasly Microcirculation Research Center, Peking University Health Science Center, Beijing 100191, China.,Key Laboratory of Microcirculation, State Administration of Traditional Chinese Medicine of the People's Republic of China, Beijing 100191, China.,Key Laboratory of Stasis and Phlegm, State Administration of Traditional Chinese Medicine of the People's Republic of China, Beijing 100191, China.,Beijing Laboratory of Integrative Microangiopathy, Beijing 100191, China
| | - Lin Li
- Department of Cardiology, Beijing China-Japan Friendship Hospital, Beijing 100029, China
| | - Bai-He Hu
- Tasly Microcirculation Research Center, Peking University Health Science Center, Beijing 100191, China.,Key Laboratory of Microcirculation, State Administration of Traditional Chinese Medicine of the People's Republic of China, Beijing 100191, China.,Key Laboratory of Stasis and Phlegm, State Administration of Traditional Chinese Medicine of the People's Republic of China, Beijing 100191, China.,Beijing Laboratory of Integrative Microangiopathy, Beijing 100191, China
| | - Xin Chang
- Tasly Microcirculation Research Center, Peking University Health Science Center, Beijing 100191, China.,Key Laboratory of Microcirculation, State Administration of Traditional Chinese Medicine of the People's Republic of China, Beijing 100191, China.,Key Laboratory of Stasis and Phlegm, State Administration of Traditional Chinese Medicine of the People's Republic of China, Beijing 100191, China.,Beijing Laboratory of Integrative Microangiopathy, Beijing 100191, China
| | - Yu-Ying Liu
- Tasly Microcirculation Research Center, Peking University Health Science Center, Beijing 100191, China.,Key Laboratory of Microcirculation, State Administration of Traditional Chinese Medicine of the People's Republic of China, Beijing 100191, China.,Key Laboratory of Stasis and Phlegm, State Administration of Traditional Chinese Medicine of the People's Republic of China, Beijing 100191, China.,Beijing Laboratory of Integrative Microangiopathy, Beijing 100191, China
| | - Jing-Yu Fan
- Tasly Microcirculation Research Center, Peking University Health Science Center, Beijing 100191, China.,Beijing Laboratory of Integrative Microangiopathy, Beijing 100191, China
| | - Kai Sun
- Tasly Microcirculation Research Center, Peking University Health Science Center, Beijing 100191, China.,Key Laboratory of Microcirculation, State Administration of Traditional Chinese Medicine of the People's Republic of China, Beijing 100191, China.,Key Laboratory of Stasis and Phlegm, State Administration of Traditional Chinese Medicine of the People's Republic of China, Beijing 100191, China.,Beijing Laboratory of Integrative Microangiopathy, Beijing 100191, China
| | - Quan -Li
- Tasly Microcirculation Research Center, Peking University Health Science Center, Beijing 100191, China.,Key Laboratory of Microcirculation, State Administration of Traditional Chinese Medicine of the People's Republic of China, Beijing 100191, China.,Key Laboratory of Stasis and Phlegm, State Administration of Traditional Chinese Medicine of the People's Republic of China, Beijing 100191, China.,Beijing Laboratory of Integrative Microangiopathy, Beijing 100191, China
| | - Jing-Yan Han
- Department of Integration of Chinese and Western Medicine, School of Basic Medical Sciences, Peking University, Beijing 100191, China.,Tasly Microcirculation Research Center, Peking University Health Science Center, Beijing 100191, China.,Key Laboratory of Microcirculation, State Administration of Traditional Chinese Medicine of the People's Republic of China, Beijing 100191, China.,Key Laboratory of Stasis and Phlegm, State Administration of Traditional Chinese Medicine of the People's Republic of China, Beijing 100191, China.,Beijing Laboratory of Integrative Microangiopathy, Beijing 100191, China
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5
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Gaspar VM, Cruz C, Queiroz JA, Pichon C, Correia IJ, Sousa F. Highly selective capture of minicircle DNA biopharmaceuticals by a novel zinc-histidine peptide conjugate. Sep Purif Technol 2017. [DOI: 10.1016/j.seppur.2016.10.054] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
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6
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Diamantino T, Pereira P, Queiroz JA, Sousa Â, Sousa F. Minicircle DNA purification using a CIM® DEAE‐1 monolithic support. J Sep Sci 2016; 39:3544-9. [DOI: 10.1002/jssc.201600375] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2016] [Revised: 07/05/2016] [Accepted: 07/18/2016] [Indexed: 01/28/2023]
Affiliation(s)
- Tatiana Diamantino
- CICS‐UBI ‐ Health Sciences Research CentreUniversidade da Beira Interior Covilhã Portugal
| | - Patrícia Pereira
- CICS‐UBI ‐ Health Sciences Research CentreUniversidade da Beira Interior Covilhã Portugal
| | - João A. Queiroz
- CICS‐UBI ‐ Health Sciences Research CentreUniversidade da Beira Interior Covilhã Portugal
| | - Ângela Sousa
- CICS‐UBI ‐ Health Sciences Research CentreUniversidade da Beira Interior Covilhã Portugal
| | - Fani Sousa
- CICS‐UBI ‐ Health Sciences Research CentreUniversidade da Beira Interior Covilhã Portugal
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7
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Mu HN, Li Q, Pan CS, Liu YY, Yan L, Hu BH, Sun K, Chang X, Zhao XR, Fan JY, Han JY. Caffeic acid attenuates rat liver reperfusion injury through sirtuin 3-dependent regulation of mitochondrial respiratory chain. Free Radic Biol Med 2015; 85:237-49. [PMID: 25960048 DOI: 10.1016/j.freeradbiomed.2015.04.033] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/30/2014] [Revised: 04/21/2015] [Accepted: 04/29/2015] [Indexed: 02/07/2023]
Abstract
Sirtuin 3 (Sirt3) plays critical roles in regulating mitochondrial oxidative metabolism. However, whether Sirt3 is involved in liver ischemia and reperfusion (I/R) injury remains elusive. Caffeic acid (CA) is a natural antioxidant derived from Salvia miltiorrhiza. Whether CA protects against liver I/R injury through regulating Sirt3 and the mitochondrial respiratory chain (MRC) is unclear. This study investigated the effect of CA on liver I/R injury, microcirculatory disturbance, and potential mechanisms, particularly focusing on Sirt3-dependent MRC. Liver I/R of male Sprague-Dawley rats was established by occlusion of portal area vessels for 30 min followed by 120 min of reperfusion. CA (15 mg/kg/h) was continuously infused via the femoral vein starting 30 min before ischemia. After I/R, Sirt3 expression, and MRC activity decreased, acetylation of NADH dehydrogenase [ubiquinone] 1 alpha subcomplex subunit 9 and succinate dehydrogenase complex, subunit A, flavoprotein variant provoked, and the liver microcirculatory disturbance and injury were observed. Treatment with CA attenuated liver injury, inhibited Sirt3 down-expression, and up-regulated MRC activity. CA attenuated rat liver microcirculatory disturbance and oxidative injury through regulation of Sirt3 and the mitochondrial respiratory chain.
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Affiliation(s)
- Hong-Na Mu
- Department of Integration of Chinese and Western Medicine, School of Basic Medical Sciences, Peking University, Beijing, China; Tasly Microcirculation Research Center, Peking University Health Science Center, Beijing, China; Key Laboratory of Stasis and Phlegm of State Administration of Traditional Chinese Medicine, Beijing, China
| | - Quan Li
- Tasly Microcirculation Research Center, Peking University Health Science Center, Beijing, China; Key Laboratory of Stasis and Phlegm of State Administration of Traditional Chinese Medicine, Beijing, China
| | - Chun-Shui Pan
- Tasly Microcirculation Research Center, Peking University Health Science Center, Beijing, China; Key Laboratory of Stasis and Phlegm of State Administration of Traditional Chinese Medicine, Beijing, China
| | - Yu-Ying Liu
- Tasly Microcirculation Research Center, Peking University Health Science Center, Beijing, China; Key Laboratory of Stasis and Phlegm of State Administration of Traditional Chinese Medicine, Beijing, China
| | - Li Yan
- Tasly Microcirculation Research Center, Peking University Health Science Center, Beijing, China; Key Laboratory of Stasis and Phlegm of State Administration of Traditional Chinese Medicine, Beijing, China
| | - Bai-He Hu
- Tasly Microcirculation Research Center, Peking University Health Science Center, Beijing, China; Key Laboratory of Stasis and Phlegm of State Administration of Traditional Chinese Medicine, Beijing, China
| | - Kai Sun
- Tasly Microcirculation Research Center, Peking University Health Science Center, Beijing, China; Key Laboratory of Stasis and Phlegm of State Administration of Traditional Chinese Medicine, Beijing, China
| | - Xin Chang
- Tasly Microcirculation Research Center, Peking University Health Science Center, Beijing, China; Key Laboratory of Stasis and Phlegm of State Administration of Traditional Chinese Medicine, Beijing, China
| | - Xin-Rong Zhao
- Tasly Microcirculation Research Center, Peking University Health Science Center, Beijing, China; Key Laboratory of Stasis and Phlegm of State Administration of Traditional Chinese Medicine, Beijing, China
| | - Jing-Yu Fan
- Tasly Microcirculation Research Center, Peking University Health Science Center, Beijing, China; Key Laboratory of Stasis and Phlegm of State Administration of Traditional Chinese Medicine, Beijing, China
| | - Jing-Yan Han
- Department of Integration of Chinese and Western Medicine, School of Basic Medical Sciences, Peking University, Beijing, China; Tasly Microcirculation Research Center, Peking University Health Science Center, Beijing, China; Key Laboratory of Stasis and Phlegm of State Administration of Traditional Chinese Medicine, Beijing, China.
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8
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Gaspar V, de Melo-Diogo D, Costa E, Moreira A, Queiroz J, Pichon C, Correia I, Sousa F. Minicircle DNA vectors for gene therapy: advances and applications. Expert Opin Biol Ther 2014; 15:353-79. [PMID: 25539147 DOI: 10.1517/14712598.2015.996544] [Citation(s) in RCA: 62] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
INTRODUCTION Nucleic-acid-based biopharmaceuticals enclose a remarkable potential for treating debilitating or life-threatening diseases that currently remain incurable. This promising area of research envisages the creation of state-of-the-art DNA vaccines, pluripotent cells or gene-based therapies, which can be used to overcome current issues. To achieve this goal, DNA minicircles are emerging as ideal nonviral vectors due to their safety and persistent transgene expression in either quiescent or actively dividing cells. AREAS COVERED This review focuses on the characteristics of minicircle DNA (mcDNA) technology and the current advances in their production. The possible modifications to further improve minicircle efficacy are also emphasized and discussed in light of recent advances. As a final point, the main therapeutic applications of mcDNA are summarized, with a special focus on pluripotent stem cells production and cancer therapy. EXPERT OPINION Achieving in-target and persistent transgene expression is a challenging issue that is of critical importance for a successful therapeutic outcome. The use of miniaturized mcDNA cassettes with additional modifications that increase and prolong expression may contribute to an improved generation of biopharmaceuticals. The unique features of mcDNA render it an attractive alternative to overcome current technical issues and to bridge the significant gap that exists between basic research and clinical applications.
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Affiliation(s)
- Vítor Gaspar
- University of Beira Interior, CICS-UBI - Health Sciences Research Center , Av. Infante D. Henrique, 6200-506, Covilhã , Portugal +351 275 329 002, +351 275 329 055 ; +351 275 329 099 ; ;
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9
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Zhang Q, Jing L, Zhang J, Ren Y, Wang Y, Wang Y, Wei T, Liedberg B. Surface plasmon resonance sensor for femtomolar detection of testosterone with water-compatible macroporous molecularly imprinted film. Anal Biochem 2014; 463:7-14. [PMID: 24991687 DOI: 10.1016/j.ab.2014.06.014] [Citation(s) in RCA: 47] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2014] [Revised: 06/20/2014] [Accepted: 06/21/2014] [Indexed: 11/25/2022]
Abstract
A novel water-compatible macroporous molecularly imprinted film (MIF) has been developed for rapid, sensitive, and label-free detection of small molecule testosterone in urine. The MIF was synthesized by photo copolymerization of monomers (methacrylic acid [MAA] and 2-hydroxyethyl methacrylate [HEMA]), cross-linker (ethylene glycol dimethacrylate, EGDMA), and polystyrene nanoparticles (PS NPs) in combination with template testosterone molecules. The PS NPs and template molecules were subsequently removed to form an MIF with macroporous structures and the specific recognition sites of testosterone. Incubation of artificial urine and human urine on the MIF and the non-imprinted film (NIF), respectively, indicated undetectable nonspecific adsorption. Accordingly, the MIF was applied on a surface plasmon resonance (SPR) sensor for the detection of testosterone in phosphate-buffered saline (PBS) and artificial urine with a limit of detection (LOD) down to 10(-15)g/ml. To the best of our knowledge, the LOD is considered as one of the lowest among the SPR sensors for the detection of small molecules. The control experiments performed with analogue molecules such as progesterone and estradiol demonstrated the good selectivity of this MIF for sensing testosterone. Furthermore, this MIF-based SPR sensor shows high stability and reproducibility over 8months of storage at room temperature, which is more robust than protein-based biosensors.
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Affiliation(s)
- Qingwen Zhang
- Key Laboratory of Cluster Science of Ministry of Education, Beijing Institute of Technology, Beijing 100081, China
| | - Lijing Jing
- Key Laboratory of Cluster Science of Ministry of Education, Beijing Institute of Technology, Beijing 100081, China
| | - Jinling Zhang
- Centre for Biomimetic Sensor Science, Nanyang Technological University, Singapore 637553, Singapore
| | - Yamin Ren
- Key Laboratory of Cluster Science of Ministry of Education, Beijing Institute of Technology, Beijing 100081, China
| | - Yang Wang
- Key Laboratory of Cluster Science of Ministry of Education, Beijing Institute of Technology, Beijing 100081, China
| | - Yi Wang
- Centre for Biomimetic Sensor Science, Nanyang Technological University, Singapore 637553, Singapore.
| | - Tianxin Wei
- Key Laboratory of Cluster Science of Ministry of Education, Beijing Institute of Technology, Beijing 100081, China.
| | - Bo Liedberg
- Centre for Biomimetic Sensor Science, Nanyang Technological University, Singapore 637553, Singapore
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10
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Gaspar VM, Gonçalves C, de Melo-Diogo D, Costa EC, Queiroz JA, Pichon C, Sousa F, Correia IJ. Poly(2-ethyl-2-oxazoline)-PLA-g-PEI amphiphilic triblock micelles for co-delivery of minicircle DNA and chemotherapeutics. J Control Release 2014; 189:90-104. [PMID: 24984013 DOI: 10.1016/j.jconrel.2014.06.040] [Citation(s) in RCA: 70] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2014] [Revised: 06/21/2014] [Accepted: 06/21/2014] [Indexed: 12/24/2022]
Abstract
The design of nanocarriers for the delivery of drugs and nucleic-acids remains a very challenging goal due to their physicochemical differences. In addition, the reported accelerated clearance and immune response of pegylated nanomedicines highlight the necessity to develop carriers using new materials. Herein, we describe the synthesis of amphiphilic triblock poly(2-ethyl-2-oxazoline)-PLA-g-PEI (PEOz-PLA-g-PEI) micelles for the delivery of minicircle DNA (mcDNA) vectors. In this copolymer the generally used PEG moieties are replaced by the biocompatible PEOz polymer backbone that assembles the hydrophilic shell. The obtained results show that amphiphilic micelles have low critical micellar concentration, are hemocompatible and exhibit stability upon incubation in serum. The uptake in MCF-7 cells was efficient and the nanocarriers achieved 2.7 fold higher expression than control particles. Moreover, mcDNA-loaded micelleplexes penetrated into 3D multicellular spheroids and promoted widespread gene expression. Additionally, to prove the concept of co-delivery, mcDNA and doxorubicin (Dox) were simultaneously encapsulated in PEOz-PLA-g-PEI carriers, with high efficiency. Dox-mcDNA micelleplexes exhibited extensive cellular uptake and demonstrated anti-tumoral activity. These findings led us to conclude that this system has a potential not only for the delivery of novel mcDNA vectors, but also for the co-delivery of drug-mcDNA combinations without PEG functionalization.
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Affiliation(s)
- Vítor M Gaspar
- CICS-UBI, Health Sciences Research Center, University of Beira Interior, 6200-506 Covilhã, Portugal
| | - Cristine Gonçalves
- Centre de Biophysique Moléculaire, CNRS UPR4301, Inserm et Université d'Orléans, 45071 Orléans cedex 02, France
| | - Duarte de Melo-Diogo
- CICS-UBI, Health Sciences Research Center, University of Beira Interior, 6200-506 Covilhã, Portugal
| | - Elisabete C Costa
- CICS-UBI, Health Sciences Research Center, University of Beira Interior, 6200-506 Covilhã, Portugal
| | - João A Queiroz
- CICS-UBI, Health Sciences Research Center, University of Beira Interior, 6200-506 Covilhã, Portugal
| | - Chantal Pichon
- Centre de Biophysique Moléculaire, CNRS UPR4301, Inserm et Université d'Orléans, 45071 Orléans cedex 02, France
| | - Fani Sousa
- CICS-UBI, Health Sciences Research Center, University of Beira Interior, 6200-506 Covilhã, Portugal
| | - Ilídio J Correia
- CICS-UBI, Health Sciences Research Center, University of Beira Interior, 6200-506 Covilhã, Portugal.
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