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Zhao Y, Ma W, Tian K, Wang Z, Fu X, Zuo Q, Qi Y, Zhang S. Sucrose ester embedded lipid carrier for DNA delivery. Eur J Pharm Biopharm 2024; 198:114269. [PMID: 38527635 DOI: 10.1016/j.ejpb.2024.114269] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2023] [Revised: 03/11/2024] [Accepted: 03/23/2024] [Indexed: 03/27/2024]
Abstract
Sucrose esters (SEs) have great potential in the field of nucleic acid delivery due to their unique physical and chemical properties and good biosafety. However, the mechanism of the effect of SEs structure on delivery efficiency has not been studied. The liposomes containing peptide lipids and SEs were constructed, and the effects of SEs on the interaction between the liposomes and DNA were studied. The addition of SEs affects the binding rate of liposomes to DNA, and the binding rate gradually decreases with the increase of SEs' carbon chain length. SEs also affect the binding site and affinity of liposomes to DNA, promoting the aggregation of lipids to form liposomes, where DNA wraps around or compresses inside the liposomes, allowing it to compress DNA without damaging the DNA structure. COL-6, which is composed of sucrose laurate, exhibits the optimal affinity for DNA, and SE promotes the formation of ordered membrane structure and enhances membrane stability, so that COL-6 exhibits a balance between rigidity and flexibility, and thus exhibits the highest delivery efficiency of DNA among these formulations. This work provides theoretical foundations for the application of SE in gene delivery and guides for the rational design of delivery systems.
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Affiliation(s)
- Yinan Zhao
- Key Laboratory of Biotechnology and Bioresources Utilization of Ministry of Education, College of Life Sciences, Dalian Minzu University, Dalian 116600, China
| | - Wanting Ma
- Key Laboratory of Biotechnology and Bioresources Utilization of Ministry of Education, College of Life Sciences, Dalian Minzu University, Dalian 116600, China
| | - Kexin Tian
- College of Chemical Engineering, Dalian University of Technology, Dalian 116600, China
| | - Zhe Wang
- Key Laboratory of Biotechnology and Bioresources Utilization of Ministry of Education, College of Life Sciences, Dalian Minzu University, Dalian 116600, China
| | - Xingxing Fu
- Key Laboratory of Biotechnology and Bioresources Utilization of Ministry of Education, College of Life Sciences, Dalian Minzu University, Dalian 116600, China
| | - Qi Zuo
- Key Laboratory of Biotechnology and Bioresources Utilization of Ministry of Education, College of Life Sciences, Dalian Minzu University, Dalian 116600, China
| | - Yanfei Qi
- Centenary Institute, The University of Sydney, Sydney 2050, Australia.
| | - Shubiao Zhang
- Key Laboratory of Biotechnology and Bioresources Utilization of Ministry of Education, College of Life Sciences, Dalian Minzu University, Dalian 116600, China.
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2
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Stampone E, Bencivenga D, Capellupo MC, Roberti D, Tartaglione I, Perrotta S, Della Ragione F, Borriello A. Genome editing and cancer therapy: handling the hypoxia-responsive pathway as a promising strategy. Cell Mol Life Sci 2023; 80:220. [PMID: 37477829 PMCID: PMC10361942 DOI: 10.1007/s00018-023-04852-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2023] [Revised: 06/14/2023] [Accepted: 06/29/2023] [Indexed: 07/22/2023]
Abstract
The precise characterization of oxygen-sensing pathways and the identification of pO2-regulated gene expression are both issues of critical importance. The O2-sensing system plays crucial roles in almost all the pivotal human processes, including the stem cell specification, the growth and development of tissues (such as embryogenesis), the modulation of intermediate metabolism (including the shift of the glucose metabolism from oxidative to anaerobic ATP production and vice versa), and the control of blood pressure. The solid cancer microenvironment is characterized by low oxygen levels and by the consequent activation of the hypoxia response that, in turn, allows a complex adaptive response characterized mainly by neoangiogenesis and metabolic reprogramming. Recently, incredible advances in molecular genetic methodologies allowed the genome editing with high efficiency and, above all, the precise identification of target cells/tissues. These new possibilities and the knowledge of the mechanisms of adaptation to hypoxia suggest the effective development of new therapeutic approaches based on the manipulation, targeting, and exploitation of the oxygen-sensor system molecular mechanisms.
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Affiliation(s)
- Emanuela Stampone
- Department of Precision Medicine, University of Campania "L. Vanvitelli", Via Luigi De Crecchio, 7, 80138, Naples, Italy
| | - Debora Bencivenga
- Department of Precision Medicine, University of Campania "L. Vanvitelli", Via Luigi De Crecchio, 7, 80138, Naples, Italy
| | - Maria Chiara Capellupo
- Department of Precision Medicine, University of Campania "L. Vanvitelli", Via Luigi De Crecchio, 7, 80138, Naples, Italy
| | - Domenico Roberti
- Department of the Woman, the Child and of the General and Specialty Surgery, University of Campania "L. Vanvitelli", Via Luigi De Crecchio, 2, 80138, Naples, Italy
| | - Immacolata Tartaglione
- Department of the Woman, the Child and of the General and Specialty Surgery, University of Campania "L. Vanvitelli", Via Luigi De Crecchio, 2, 80138, Naples, Italy
| | - Silverio Perrotta
- Department of the Woman, the Child and of the General and Specialty Surgery, University of Campania "L. Vanvitelli", Via Luigi De Crecchio, 2, 80138, Naples, Italy
| | - Fulvio Della Ragione
- Department of Precision Medicine, University of Campania "L. Vanvitelli", Via Luigi De Crecchio, 7, 80138, Naples, Italy.
| | - Adriana Borriello
- Department of Precision Medicine, University of Campania "L. Vanvitelli", Via Luigi De Crecchio, 7, 80138, Naples, Italy.
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3
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Perry CC, Ramos-Méndez J, Milligan JR. Boronated Condensed DNA as a Heterochromatic Radiation Target Model. Biomacromolecules 2021; 22:1675-1684. [PMID: 33750108 DOI: 10.1021/acs.biomac.1c00106] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
The compound 4-dihydroxyboryl-l-phenylalanine (BPA) has found use in clinical trials of boron neutron capture therapy (BNCT). Here, we have examined the interaction with DNA of an amide-blocked BPA derivative of hexa-l-arginine (Ac-BPA-Arg6-NH2). Physical and spectroscopic assays show that this peptide binds to and condenses DNA. The resulting condensates are highly resistant to the effects of nuclease incubation (68-fold) and gamma (38-fold) irradiation. Radioprotection was modeled by Monte Carlo track structure simulations of DNA single strand breaks (SSBs) with TOPAS-nBio. The differences between experimental and simulated SSB yields for uncondensed and condensed DNAs were ca. 2 and 18%, respectively. These observations indicate that the combination of a plasmid DNA target, the BPA-containing peptide, and track structure simulation provides a powerful approach to characterize DNA damage by the high-LET radiation associated with neutron capture on boron.
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Affiliation(s)
- Christopher C Perry
- Department of Basic Sciences, School of Medicine, Loma Linda University, 11085 Campus Street, Loma Linda, California 92350, United States
| | - José Ramos-Méndez
- Department of Radiation Oncology, University of California San Francisco, 1600 Divisadero Street, San Francisco, California 94115, United States
| | - Jamie R Milligan
- Department of Basic Sciences, School of Medicine, Loma Linda University, 11085 Campus Street, Loma Linda, California 92350, United States
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Thomas TJ, Tajmir-Riahi HA, Pillai CKS. Biodegradable Polymers for Gene Delivery. Molecules 2019; 24:molecules24203744. [PMID: 31627389 PMCID: PMC6832905 DOI: 10.3390/molecules24203744] [Citation(s) in RCA: 87] [Impact Index Per Article: 17.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2019] [Revised: 10/07/2019] [Accepted: 10/08/2019] [Indexed: 12/13/2022] Open
Abstract
The cellular transport process of DNA is hampered by cell membrane barriers, and hence, a delivery vehicle is essential for realizing the potential benefits of gene therapy to combat a variety of genetic diseases. Virus-based vehicles are effective, although immunogenicity, toxicity and cancer formation are among the major limitations of this approach. Cationic polymers, such as polyethyleneimine are capable of condensing DNA to nanoparticles and facilitate gene delivery. Lack of biodegradation of polymeric gene delivery vehicles poses significant toxicity because of the accumulation of polymers in the tissue. Many attempts have been made to develop biodegradable polymers for gene delivery by modifying existing polymers and/or using natural biodegradable polymers. This review summarizes mechanistic aspects of gene delivery and the development of biodegradable polymers for gene delivery.
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Affiliation(s)
- T J Thomas
- Department of Medicine, Rutgers Robert Wood Johnson Medical School, KTL N102, 675 Hoes Lane, Piscataway, NJ 08854, USA.
- Rutgers Cancer Institute of New Jersey, New Brunswick, NJ 08901, USA.
| | | | - C K S Pillai
- Department of Chemistry-Biochemistry-Physics, University of Québec in Trois-Rivières, C. P. 500, Trois-Rivières, QC G9A 5H7, Canada.
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5
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Cao M, Wang Y, Zhao W, Qi R, Han Y, Wu R, Wang Y, Xu H. Peptide-Induced DNA Condensation into Virus-Mimicking Nanostructures. ACS APPLIED MATERIALS & INTERFACES 2018; 10:24349-24360. [PMID: 29979028 DOI: 10.1021/acsami.8b00246] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
A series of surfactant-like peptides have been designed for inducing DNA condensation, which are all comprised of the same set of amino acids in different sequences. Results from experiments and molecular dynamics simulations show that the peptide's self-assembly and DNA-interaction behaviors can be well manipulated through sequence variation. With optimized pairing modes between the β-sheets, the peptide of I3V3A3G3K3 can induce efficient DNA condensation into virus-mimicking structures. The condensation involves two steps; the peptide molecules first bind onto the DNA chain through electrostatic interactions and then self-associate into β-sheets under hydrophobic interactions and hydrogen bonding. In such condensates, the peptide β-sheets act as scaffolds to assist the ordered arrangement of DNA, mimicking the very nature of the virus capsid in helping DNA packaging. Such a hierarchy affords an extremely stable structure to attain the highly condensed state and protect DNA against enzymatic degradation. Moreover, the condensate size can be well tuned by the DNA length. The condensates with smaller sizes and narrow size distribution can deliver DNA efficiently into cells. The study helps not only for probing into the DNA packaging mechanism in virus but also delineating the role of peptide self-assembly in DNA condensation, which may lead to development of peptide-based gene vectors for therapeutic applications.
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Affiliation(s)
- Meiwen Cao
- State Key Laboratory of Heavy Oil Processing and Centre for Bioengineering and Biotechnology, College of Chemical Engineering , China University of Petroleum (East China) , 66 Changjiang West Road , Qingdao 266580 , China
| | - Yu Wang
- State Key Laboratory of Heavy Oil Processing and Centre for Bioengineering and Biotechnology, College of Chemical Engineering , China University of Petroleum (East China) , 66 Changjiang West Road , Qingdao 266580 , China
| | - Wenjing Zhao
- State Key Laboratory of Heavy Oil Processing and Centre for Bioengineering and Biotechnology, College of Chemical Engineering , China University of Petroleum (East China) , 66 Changjiang West Road , Qingdao 266580 , China
| | - Ruilian Qi
- Key Laboratory of Colloid and Interface Science, Beijing National Laboratory for Molecular Sciences (BNLMS), Institute of Chemistry , Chinese Academy of Sciences , Beijing 100190 , China
| | - Yuchun Han
- Key Laboratory of Colloid and Interface Science, Beijing National Laboratory for Molecular Sciences (BNLMS), Institute of Chemistry , Chinese Academy of Sciences , Beijing 100190 , China
| | - Rongliang Wu
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Material Science and Engineering , Donghua University , Shanghai 201620 , China
| | - Yilin Wang
- Key Laboratory of Colloid and Interface Science, Beijing National Laboratory for Molecular Sciences (BNLMS), Institute of Chemistry , Chinese Academy of Sciences , Beijing 100190 , China
| | - Hai Xu
- State Key Laboratory of Heavy Oil Processing and Centre for Bioengineering and Biotechnology, College of Chemical Engineering , China University of Petroleum (East China) , 66 Changjiang West Road , Qingdao 266580 , China
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Süleymanoğlu E. Mg 2+-induced DNA compaction, condensation, and phase separation in gene delivery vehicles based on zwitterionic phospholipids: a dynamic light scattering and surface-enhanced Raman spectroscopic study. J Biol Inorg Chem 2017; 22:1165-1177. [PMID: 28924921 DOI: 10.1007/s00775-017-1492-x] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2017] [Accepted: 08/28/2017] [Indexed: 01/08/2023]
Abstract
Despite the significant efforts towards applying improved non-destructive and label-free measurements of biomolecular structures of lipid-based gene delivery vectors, little is achieved in terms of their structural relevance in gene transfections. Better understanding of structure-activity relationships of lipid-DNA complexes and their gene expression efficiencies thus becomes an essential issue. Raman scattering offers a complimentary measurement technique for following the structural transitions of both DNA and lipid vesicles employed for their transfer. This work describes the use of SERS coupled with light scattering approaches for deciphering the bioelectrochemical phase formations between nucleic acids and lipid vesicles within lipoplexes and their surface parameters that could influence both the uptake of non-viral gene carriers and the endocytic routes of interacting cells. As promising non-viral alternatives of currently employed risky viral systems or highly cytotoxic cationic liposomes, complexations of both nucleic acids and zwitterionic lipids in the presence of Mg2+ were studied applying colloidal Ag nanoparticles. It is shown that the results could be employed in further conformational characterizations of similar polyelectrolyte gene delivery systems.
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Affiliation(s)
- Erhan Süleymanoğlu
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Gazi University, 06330, Ankara, Turkey.
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Wu L, Zhang Z, Gao H, Li Y, Hou L, Yao H, Wu S, Liu J, Wang L, Zhai Y, Ou H, Lin M, Wu X, Liu J, Lang G, Xin Q, Wu G, Luo L, Liu P, Shentu J, Wu N, Sheng J, Qiu Y, Chen W, Li L. Open-label phase I clinical trial of Ad5-EBOV in Africans in China. Hum Vaccin Immunother 2017; 13. [PMID: 28708962 DOI: 10.1002/smll.201701815] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2017] [Revised: 07/31/2017] [Indexed: 04/16/2023] Open
Abstract
BACKGROUND To determine the safety and immunogenicity of a novel recombinant adenovirus type 5 vector based Ebola virus disease vaccine (Ad5-EBOV) in Africans in China. METHODS A phase 1, dose-escalation, open-label trial was conducted. 61 healthy Africans were sequentially enrolled, with 31 participants receiving one shot intramuscular injection and 30 participants receiving a double-shot regimen. Primary and secondary end points related to safety and immunogenicity were assessed within 28 d after vaccination. This study was registered with ClinicalTrials.gov (NCT02401373). RESULTS Ad5-EBOV is well tolerated and no adverse reaction of grade 3 or above was observed. 53 (86.89%) participants reported at least one adverse reaction within 28 d of vaccination. The most common reaction was fever and the mild pain at injection site, and there were no significant difference between these 2 groups. Ebola glycoprotein-specific antibodies appeared in all 61 participants and antibodies titers peaked after 28 d of vaccination. The geometric mean titres (GMTs) were similar between these 2 groups (1919.01 vs 1684.70 P = 0.5562). The glycoprotein-specific T-cell responses rapidly peaked after 14 d of vaccination and then decreased, however, the percentage of subjects with responses were much higher in the high-dose group (60.00% vs 9.68%, P = 0.0014). Pre-existing Ad5 neutralizing antibodies could significantly dampen the specific humoral immune response and cellular response to the vaccine. CONCLUSION The application of Ad5-EBOV demonstrated safe in Africans in China and a specific GP antibody and T-cell response could occur 14 d after the first immunization. This acceptable safety profile provides a reliable basis to proceed with trials in Africa.
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MESH Headings
- Adult
- Africa/epidemiology
- Antibodies, Neutralizing/blood
- Antibodies, Viral/blood
- China
- Ebola Vaccines/administration & dosage
- Ebola Vaccines/adverse effects
- Ebola Vaccines/immunology
- Ebolavirus/immunology
- Female
- Fever/ethnology
- Healthy Volunteers
- Hemorrhagic Fever, Ebola/epidemiology
- Hemorrhagic Fever, Ebola/ethnology
- Hemorrhagic Fever, Ebola/immunology
- Hemorrhagic Fever, Ebola/prevention & control
- Humans
- Immunity, Cellular
- Immunity, Humoral
- Immunogenicity, Vaccine
- Injections, Intramuscular
- Male
- Membrane Glycoproteins/immunology
- Middle Aged
- T-Lymphocytes/immunology
- Vaccination
- Young Adult
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Affiliation(s)
- Lihua Wu
- a The First Affiliated Hospital, College of Medicine, Zhejiang University , Xiacheng District, Hangzhou , Zhejiang , China
- b The Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases , Xiacheng District, Hangzhou , Zhejiang , China
| | - Zhe Zhang
- c Beijing Institute of Biotechnology , Haidian District, Beijing , China
| | - Hainv Gao
- b The Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases , Xiacheng District, Hangzhou , Zhejiang , China
- d Zhejiang University International Hospital , Xiacheng District, Hangzhou , Zhejiang , China
| | - Yuhua Li
- e National Institutes for Food and Drug Control , Chongwen District, Beijing , China
| | - Lihua Hou
- c Beijing Institute of Biotechnology , Haidian District, Beijing , China
| | - Hangping Yao
- a The First Affiliated Hospital, College of Medicine, Zhejiang University , Xiacheng District, Hangzhou , Zhejiang , China
- b The Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases , Xiacheng District, Hangzhou , Zhejiang , China
| | - Shipo Wu
- c Beijing Institute of Biotechnology , Haidian District, Beijing , China
| | - Jian Liu
- a The First Affiliated Hospital, College of Medicine, Zhejiang University , Xiacheng District, Hangzhou , Zhejiang , China
- b The Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases , Xiacheng District, Hangzhou , Zhejiang , China
| | - Ling Wang
- e National Institutes for Food and Drug Control , Chongwen District, Beijing , China
| | - You Zhai
- a The First Affiliated Hospital, College of Medicine, Zhejiang University , Xiacheng District, Hangzhou , Zhejiang , China
- b The Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases , Xiacheng District, Hangzhou , Zhejiang , China
| | - Huilin Ou
- a The First Affiliated Hospital, College of Medicine, Zhejiang University , Xiacheng District, Hangzhou , Zhejiang , China
- b The Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases , Xiacheng District, Hangzhou , Zhejiang , China
| | - Meihua Lin
- a The First Affiliated Hospital, College of Medicine, Zhejiang University , Xiacheng District, Hangzhou , Zhejiang , China
- b The Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases , Xiacheng District, Hangzhou , Zhejiang , China
| | - Xiaoxin Wu
- b The Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases , Xiacheng District, Hangzhou , Zhejiang , China
- d Zhejiang University International Hospital , Xiacheng District, Hangzhou , Zhejiang , China
| | - Jingjing Liu
- e National Institutes for Food and Drug Control , Chongwen District, Beijing , China
| | - Guanjing Lang
- a The First Affiliated Hospital, College of Medicine, Zhejiang University , Xiacheng District, Hangzhou , Zhejiang , China
- b The Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases , Xiacheng District, Hangzhou , Zhejiang , China
| | - Qian Xin
- f The General Hospital of People's Liberation Army , Beijing , China
| | - Guolan Wu
- a The First Affiliated Hospital, College of Medicine, Zhejiang University , Xiacheng District, Hangzhou , Zhejiang , China
- b The Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases , Xiacheng District, Hangzhou , Zhejiang , China
| | - Li Luo
- g Department of Epidemiology and Biostatistics , School of Public Health, Southeast University , Nanjing , Jiangsu , China
| | - Pei Liu
- g Department of Epidemiology and Biostatistics , School of Public Health, Southeast University , Nanjing , Jiangsu , China
| | - Jianzhong Shentu
- a The First Affiliated Hospital, College of Medicine, Zhejiang University , Xiacheng District, Hangzhou , Zhejiang , China
- b The Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases , Xiacheng District, Hangzhou , Zhejiang , China
| | - Nanping Wu
- a The First Affiliated Hospital, College of Medicine, Zhejiang University , Xiacheng District, Hangzhou , Zhejiang , China
- b The Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases , Xiacheng District, Hangzhou , Zhejiang , China
| | - Jifang Sheng
- a The First Affiliated Hospital, College of Medicine, Zhejiang University , Xiacheng District, Hangzhou , Zhejiang , China
- b The Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases , Xiacheng District, Hangzhou , Zhejiang , China
| | - Yunqing Qiu
- a The First Affiliated Hospital, College of Medicine, Zhejiang University , Xiacheng District, Hangzhou , Zhejiang , China
- b The Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases , Xiacheng District, Hangzhou , Zhejiang , China
| | - Wei Chen
- c Beijing Institute of Biotechnology , Haidian District, Beijing , China
| | - Lanjuan Li
- a The First Affiliated Hospital, College of Medicine, Zhejiang University , Xiacheng District, Hangzhou , Zhejiang , China
- b The Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases , Xiacheng District, Hangzhou , Zhejiang , China
- d Zhejiang University International Hospital , Xiacheng District, Hangzhou , Zhejiang , China
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8
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Cao M, Zhao W, Zhou P, Xie Z, Sun Y, Xu H. Peptide nucleic acid-ionic self-complementary peptide conjugates: highly efficient DNA condensers with specific condensing mechanism. RSC Adv 2017. [DOI: 10.1039/c6ra26329a] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023] Open
Abstract
Peptide nucleic acid-ionic self-complementary peptide conjugates can induce efficient DNA condensation via base-pairing interaction and peptide association.
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Affiliation(s)
- Meiwen Cao
- State Key Laboratory of Heavy Oil Processing
- Centre for Bioengineering and Biotechnology
- China University of Petroleum (East China)
- Qingdao 266555
- P. R. China
| | - Wenjing Zhao
- State Key Laboratory of Heavy Oil Processing
- Centre for Bioengineering and Biotechnology
- China University of Petroleum (East China)
- Qingdao 266555
- P. R. China
| | - Peng Zhou
- State Key Laboratory of Heavy Oil Processing
- Centre for Bioengineering and Biotechnology
- China University of Petroleum (East China)
- Qingdao 266555
- P. R. China
| | - Zilong Xie
- State Key Laboratory of Heavy Oil Processing
- Centre for Bioengineering and Biotechnology
- China University of Petroleum (East China)
- Qingdao 266555
- P. R. China
| | - Yawei Sun
- State Key Laboratory of Heavy Oil Processing
- Centre for Bioengineering and Biotechnology
- China University of Petroleum (East China)
- Qingdao 266555
- P. R. China
| | - Hai Xu
- State Key Laboratory of Heavy Oil Processing
- Centre for Bioengineering and Biotechnology
- China University of Petroleum (East China)
- Qingdao 266555
- P. R. China
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9
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Tian Y, Wang H, Liu Y, Mao L, Chen W, Zhu Z, Liu W, Zheng W, Zhao Y, Kong D, Yang Z, Zhang W, Shao Y, Jiang X. A peptide-based nanofibrous hydrogel as a promising DNA nanovector for optimizing the efficacy of HIV vaccine. NANO LETTERS 2014; 14:1439-45. [PMID: 24564254 DOI: 10.1021/nl404560v] [Citation(s) in RCA: 137] [Impact Index Per Article: 13.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/21/2023]
Abstract
This report shows that a nanovector composed of peptide-based nanofibrous hydrogel can condense DNA to result in strong immune responses against HIV. This nanovector can strongly activate both humoral and cellular immune responses to a balanced level rarely reported in previous studies, which is crucial for HIV prevention and therapy. In addition, this nanovector shows good biosafety in vitro and in vivo. Detailed characterizations show that the nanofibrous structure of the hydrogel is critical for the dramatically improved immune responses compared to existing materials. This peptide-based nanofibrous hydrogel shows great potential for efficacious HIV DNA vaccines and can be potentially used for delivering other vaccines and drugs.
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Affiliation(s)
- Yue Tian
- Beijing Engineering Research Center for BioNanotechnology and CAS Key Lab for Biological Effects of Nanomaterials and Nanosafety, National Center for NanoScience and Technology , No., 11 Zhongguancun Beiyitiao, Beijing 100190, China
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10
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Jastrzabek K, Bednarek P, Kolesinska B, Kaminski ZJ. Bis(4,6-dimethoxy-1,3,5-triazin-2-yl) ether as coupling reagent for peptide synthesis. Chem Biodivers 2013; 10:952-61. [PMID: 23681736 DOI: 10.1002/cbdv.201200369] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2012] [Indexed: 02/01/2023]
Abstract
Bis(4,6-dimethoxy-1,3,5-triazin-2-yl) ether (4) was prepared by treatment of 2-hydroxy-4,6-dimethoxy-1,3,5-triazine with 2-chloro-4,6-dimethoxy-1,3,5-triazine in 61% yield. Ether 4, isoelectronic with pyrocarbonates, was found capable to activate carboxylic acids in the presence of 1,4-diazabicyclo[2.2.2]octane (DABCO) to yield, under mild reaction conditions, superactive triazine esters. Versatility of this new coupling reagent was confirmed by condensation of lipophilic and sterically hindered carboxylic acids with amines in 71-98% yield, and by synthesis of peptides, including those containing Aib-Aib sequence, in solution with high yield and high enantiomeric purity.
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Affiliation(s)
- Konrad Jastrzabek
- Institute of Organic Chemistry, Technical University of Lodz, Zeromskiego 116, PL-90-924 Lodz
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11
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Perry CC, Urata SM, Lee M, Aguilera JA, Milligan JR. Radioprotective effects produced by the condensation of plasmid DNA with avidin and biotinylated gold nanoparticles. RADIATION AND ENVIRONMENTAL BIOPHYSICS 2012; 51:457-468. [PMID: 22825766 DOI: 10.1007/s00411-012-0429-6] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/19/2012] [Accepted: 06/28/2012] [Indexed: 06/01/2023]
Abstract
The treatment of aqueous solutions of plasmid DNA with the protein avidin results in significant changes in physical, chemical, and biochemical properties. These effects include increased light scattering, formation of micron-sized particles containing both DNA and protein, and plasmid protection against thermal denaturation, radical attack, and nuclease digestion. All of these changes are consistent with condensation of the plasmid by avidin. Avidin can be displaced from the plasmid at higher ionic strengths. Avidin is not displaced from the plasmid by an excess of a tetra-arginine ligand, nor by the presence of biotin. Therefore, this system offers the opportunity to reversibly bind biotin-labeled species to a condensed DNA-protein complex. An example application is the use of biotinylated gold nanoparticles. This system offers the ability to examine in better detail the chemical mechanisms involved in important radiobiological effects. Examples include protein modulation of radiation damage to DNA, and radiosensitization by gold nanoparticles.
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Affiliation(s)
- Christopher C Perry
- Department of Biochemistry, Loma Linda University, 11085 Campus Street, Loma Linda, CA, 92350, USA
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12
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Lee M, Urata SM, Aguilera JA, Perry CC, Milligan JR. Modeling the Influence of Histone Proteins on the Sensitivity of DNA to Ionizing Radiation. Radiat Res 2012; 177:152-63. [DOI: 10.1667/rr2812.1] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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Konigsfeld KM, Lee M, Urata SM, Aguilera JA, Milligan JR. Free terminal amines in DNA-binding peptides alter the product distribution from guanine radicals produced by single electron oxidation. Int J Radiat Biol 2011; 88:230-8. [PMID: 22124251 DOI: 10.3109/09553002.2012.643853] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
PURPOSE Electron deficient guanine radical species are major intermediates produced in DNA by the direct effect of ionizing irradiation. There is evidence that they react with amine groups in closely bound ligands to form covalent crosslinks. Crosslink formation is very poorly characterized in terms of quantitative rate and yield data. We sought to address this issue by using oligo-arginine ligands to model the close association of DNA and its binding proteins in chromatin. MATERIALS AND METHODS Guanine radicals were prepared in plasmid DNA by single electron oxidation. The product distribution derived from them was assayed by strand break formation after four different post-irradiation incubations. RESULTS We compared the yields of DNA damage produced in the presence of four ligands in which neither, one, or both of the amino and carboxylate termini were blocked with amides. Free carboxylate groups were unreactive. Significantly higher yields of heat labile sites were observed when the amino terminus was unblocked. The rate of the reaction was characterized by diluting the unblocked amino group with its amide blocked derivative. CONCLUSION These observations provide a means to develop quantitative estimates for the yields in which these labile sites are formed in chromatin by exposure to ionizing irradiation.
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Affiliation(s)
- Katie M Konigsfeld
- Department of Radiology, University of California at San Diego, La Jolla, California 92093-0610, USA
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