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Yeom H, Kim N, Lee AC, Kim J, Kim H, Choi H, Song SW, Kwon S, Choi Y. Highly Accurate Sequence- and Position-Independent Error Profiling of DNA Synthesis and Sequencing. ACS Synth Biol 2023; 12:3567-3577. [PMID: 37961855 PMCID: PMC10729760 DOI: 10.1021/acssynbio.3c00308] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2023] [Revised: 11/01/2023] [Accepted: 11/01/2023] [Indexed: 11/15/2023]
Abstract
A comprehensive error analysis of DNA-stored data during processing, such as DNA synthesis and sequencing, is crucial for reliable DNA data storage. Both synthesis and sequencing errors depend on the sequence and the transition of bases of nucleotides; ignoring either one of the error sources leads to technical challenges in minimizing the error rate. Here, we present a methodology and toolkit that utilizes an oligonucleotide library generated from a 10-base-shifted sequence array, which is individually labeled with unique molecular identifiers, to delineate and profile DNA synthesis and sequencing errors simultaneously. This methodology enables position- and sequence-independent error profiling of both DNA synthesis and sequencing. Using this toolkit, we report base transitional errors in both synthesis and sequencing in general DNA data storage as well as degenerate-base-augmented DNA data storage. The methodology and data presented will contribute to the development of DNA sequence designs with minimal error.
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Affiliation(s)
- Huiran Yeom
- Division
of Data Science, College of Information and Communication Technology, The University of Suwon, Hwaseong 18323, Republic of Korea
| | - Namphil Kim
- Department
of Electrical and Computer Engineering, Seoul National University, Seoul 08826, South Korea
| | | | - Jinhyun Kim
- Department
of Electrical and Computer Engineering, Seoul National University, Seoul 08826, South Korea
| | - Hamin Kim
- Department
of Interdisciplinary Program for Bioengineering, Seoul National University, Seoul 08826, South Korea
| | - Hansol Choi
- Bio-MAX
Institute, Seoul National University, Seoul 08826, Republic of Korea
| | - Seo Woo Song
- Basic Science
and Engineering Initiative, Children’s Heart Center, Stanford University, Stanford, California 94304, United States
| | - Sunghoon Kwon
- Department
of Electrical and Computer Engineering, Seoul National University, Seoul 08826, South Korea
- Department
of Interdisciplinary Program for Bioengineering, Seoul National University, Seoul 08826, South Korea
- Bio-MAX
Institute, Seoul National University, Seoul 08826, Republic of Korea
| | - Yeongjae Choi
- School
of Materials Science and Engineering, Gwangju
Institute of Science and Technology (GIST), Gwangju 61105, Republic of Korea
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2
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Harun A, Liu H, Song S, Asghar S, Wen X, Fang Z, Chen C. Oligonucleotide Fluorescence In Situ Hybridization: An Efficient Chromosome Painting Method in Plants. Plants (Basel) 2023; 12:2816. [PMID: 37570972 PMCID: PMC10420648 DOI: 10.3390/plants12152816] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/19/2023] [Revised: 07/19/2023] [Accepted: 07/27/2023] [Indexed: 08/13/2023]
Abstract
Fluorescence in situ hybridization (FISH) is an indispensable technique for studying chromosomes in plants. However, traditional FISH methods, such as BAC, rDNA, tandem repeats, and distributed repetitive sequence probe-based FISH, have certain limitations, including difficulties in probe synthesis, low sensitivity, cross-hybridization, and limited resolution. In contrast, oligo-based FISH represents a more efficient method for chromosomal studies in plants. Oligo probes are computationally designed and synthesized for any plant species with a sequenced genome and are suitable for single and repetitive DNA sequences, entire chromosomes, or chromosomal segments. Furthermore, oligo probes used in the FISH experiment provide high specificity, resolution, and multiplexing. Moreover, oligo probes made from one species are applicable for studying other genetically and taxonomically related species whose genome has not been sequenced yet, facilitating molecular cytogenetic studies of non-model plants. However, there are some limitations of oligo probes that should be considered, such as requiring prior knowledge of the probe design process and FISH signal issues with shorter probes of background noises during oligo-FISH experiments. This review comprehensively discusses de novo oligo probe synthesis with more focus on single-copy DNA sequences, preparation, improvement, and factors that affect oligo-FISH efficiency. Furthermore, this review highlights recent applications of oligo-FISH in a wide range of plant chromosomal studies.
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Affiliation(s)
- Arrashid Harun
- Key Laboratory of Plant Resource Conservation and Germplasm Innovation in Mountainous Region (Ministry of Education), Institute of Rice Industry Technology Research, College of Agricultural Sciences, Guizhou University, Guiyang 550025, China;
- Key Laboratory of Plant Resource Conservation and Germplasm Innovation in Mountainous Region (Ministry of Education), Institute of Agro-Bioengineering, College of Life Science, Guizhou University, Guiyang 550025, China; (S.A.); (X.W.)
- National Key Laboratory for Germplasm Innovation and Utilization for Fruit and Vegetable Horticultural Crops, Hubei Hongshan Laboratory, Wuhan 430070, China; (H.L.); (S.S.)
| | - Hui Liu
- National Key Laboratory for Germplasm Innovation and Utilization for Fruit and Vegetable Horticultural Crops, Hubei Hongshan Laboratory, Wuhan 430070, China; (H.L.); (S.S.)
| | - Shipeng Song
- National Key Laboratory for Germplasm Innovation and Utilization for Fruit and Vegetable Horticultural Crops, Hubei Hongshan Laboratory, Wuhan 430070, China; (H.L.); (S.S.)
| | - Sumeera Asghar
- Key Laboratory of Plant Resource Conservation and Germplasm Innovation in Mountainous Region (Ministry of Education), Institute of Agro-Bioengineering, College of Life Science, Guizhou University, Guiyang 550025, China; (S.A.); (X.W.)
- National Key Laboratory for Germplasm Innovation and Utilization for Fruit and Vegetable Horticultural Crops, Hubei Hongshan Laboratory, Wuhan 430070, China; (H.L.); (S.S.)
| | - Xiaopeng Wen
- Key Laboratory of Plant Resource Conservation and Germplasm Innovation in Mountainous Region (Ministry of Education), Institute of Agro-Bioengineering, College of Life Science, Guizhou University, Guiyang 550025, China; (S.A.); (X.W.)
| | - Zhongming Fang
- Key Laboratory of Plant Resource Conservation and Germplasm Innovation in Mountainous Region (Ministry of Education), Institute of Rice Industry Technology Research, College of Agricultural Sciences, Guizhou University, Guiyang 550025, China;
| | - Chunli Chen
- Key Laboratory of Plant Resource Conservation and Germplasm Innovation in Mountainous Region (Ministry of Education), Institute of Rice Industry Technology Research, College of Agricultural Sciences, Guizhou University, Guiyang 550025, China;
- Key Laboratory of Plant Resource Conservation and Germplasm Innovation in Mountainous Region (Ministry of Education), Institute of Agro-Bioengineering, College of Life Science, Guizhou University, Guiyang 550025, China; (S.A.); (X.W.)
- National Key Laboratory for Germplasm Innovation and Utilization for Fruit and Vegetable Horticultural Crops, Hubei Hongshan Laboratory, Wuhan 430070, China; (H.L.); (S.S.)
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3
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Pontarelli A, Wilds CJ. Oligonucleotides Containing C5-Propynyl Modified Arabinonucleic Acids: Synthesis, Biophysical and Antisense Properties. Chembiochem 2023; 24:e202300068. [PMID: 36857293 DOI: 10.1002/cbic.202300068] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2023] [Revised: 03/01/2023] [Accepted: 03/01/2023] [Indexed: 03/02/2023]
Abstract
The introduction of chemical modifications on the nucleic acid scaffold has allowed for the progress of antisense oligonucleotides (ASOs) in the clinic for the treatment of a variety of disorders. In contribution to the repertoire of gene-silencing nucleic acid modifications, herein we report the synthesis and incorporation of C5-propynyl arabinouridine (araUP) and arabinocytidine (araCP) into mixed-base ASOs containing a pyrimidine core. Substitution of the core with araUP and araCP resulted in stabilization of the duplex formed with RNA but not with DNA. Similar results were obtained with ASOs bearing phosphorothioate linkages or methoxyethyl (MOE) wings in a gapmer design. All modified ASOs were compatible with E. coli RNase H mediated degradation of target RNA. Substitution of DNA for araUP and araCP in the central portion of a gapmer with MOE wings demonstrated improved nuclease resistance. These results suggest C5-modified arabinonucleic acids may serve as a potential chemical modification for therapeutic ASOs.
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Affiliation(s)
- Alexander Pontarelli
- Concordia University, Chemistry and Biochemistry, 7141 Sherbrooke Street West, H4B 1R6, Montreal, CANADA
| | - Christopher James Wilds
- Concordia University, Department of Chemistry and Biochemistry, 7141 Sherbrooke St. West, H4B 1R6, Montreal, CANADA
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4
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Alhamlan FS, Bakheet DM, Bohol MF, Alsanea MS, Alahideb BM, Alhadeq FM, Alsuwairi FA, Al-Abdulkareem MA, Asiri MS, Almaghrabi RS, Altamimi SA, Mutabagani MS, Althawadi SI, Al-Qahtani AA. SARS-CoV-2 spike gene Sanger sequencing methodology to identify variants of concern. Biotechniques 2023; 74:69-75. [PMID: 36794696 PMCID: PMC9937032 DOI: 10.2144/btn-2021-0114] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/17/2023] Open
Abstract
The global demand for rapid identification of circulating SARS-CoV-2 variants of concern has led to a shortage of commercial kits. Therefore, this study aimed to develop and validate a rapid, cost-efficient genome sequencing protocol to identify circulating SARS-CoV-2 (variants of concern). Sets of primers flanking the SARS-CoV-2 spike gene were designed, verified and then validated using 282 nasopharyngeal positive samples for SARS-CoV-2. Protocol specificity was confirmed by comparing these results with SARS-CoV-2 whole-genome sequencing of the same samples. Out of 282 samples, 123 contained the alpha variant, 78 beta and 13 delta, which were indicted using in-house primers and next-generation sequencing; the numbers of variants found were 100% identical to the reference genome. This protocol is easily adaptable for detection of emerging variants during the pandemic.
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Affiliation(s)
- Fatimah S Alhamlan
- Department of Infection & Immunity, King Faisal Specialist Hospital & Research Center, Riyadh, 11211, Saudi Arabia
- College of Medicine, Alfaisal University, Riyadh, 11211, Saudi Arabia
- Department of Pathology & Laboratory Medicine, King Faisal Specialist Hospital & Research Center, Riyadh, 11211, Saudi Arabia
| | - Dana M Bakheet
- College of Medicine, Alfaisal University, Riyadh, 11211, Saudi Arabia
- Center for Genomic Medicine, King Faisal Specialist Hospital & Research Center, Riyadh, 11211, Saudi Arabia
| | - Marie F Bohol
- Department of Infection & Immunity, King Faisal Specialist Hospital & Research Center, Riyadh, 11211, Saudi Arabia
| | - Madain S Alsanea
- Department of Infection & Immunity, King Faisal Specialist Hospital & Research Center, Riyadh, 11211, Saudi Arabia
| | - Basma M Alahideb
- Department of Infection & Immunity, King Faisal Specialist Hospital & Research Center, Riyadh, 11211, Saudi Arabia
| | - Faten M Alhadeq
- Department of Infection & Immunity, King Faisal Specialist Hospital & Research Center, Riyadh, 11211, Saudi Arabia
| | - Feda A Alsuwairi
- Department of Infection & Immunity, King Faisal Specialist Hospital & Research Center, Riyadh, 11211, Saudi Arabia
| | - Maha A Al-Abdulkareem
- Department of Infection & Immunity, King Faisal Specialist Hospital & Research Center, Riyadh, 11211, Saudi Arabia
| | - Mohamed S Asiri
- Department of Infection & Immunity, King Faisal Specialist Hospital & Research Center, Riyadh, 11211, Saudi Arabia
| | - Reem S Almaghrabi
- Organ Transplant Center of Excellence, King Faisal Specialist Hospital & Research Center, Riyadh, 11211, Saudi Arabia
| | - Sarah A Altamimi
- Department of Pathology & Laboratory Medicine, King Faisal Specialist Hospital & Research Center, Riyadh, 11211, Saudi Arabia
| | - Maysoon S Mutabagani
- Department of Pathology & Laboratory Medicine, King Faisal Specialist Hospital & Research Center, Riyadh, 11211, Saudi Arabia
| | - Sahar I Althawadi
- Department of Pathology & Laboratory Medicine, King Faisal Specialist Hospital & Research Center, Riyadh, 11211, Saudi Arabia
| | - Ahmed A Al-Qahtani
- Department of Infection & Immunity, King Faisal Specialist Hospital & Research Center, Riyadh, 11211, Saudi Arabia
- College of Medicine, Alfaisal University, Riyadh, 11211, Saudi Arabia
- Author for correspondence: Tel.: +966 114 424 550;
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5
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Christov PP, Richie-Jannetta R, Kingsley PJ, Vemulapalli A, Kim K, Sulikowski GA, Rizzo CJ, Ketkar A, Eoff RL, Rouzer CA, Marnett LJ. Site-Specific Synthesis of Oligonucleotides Containing 6-Oxo-M 1dG, the Genomic Metabolite of M 1dG, and Liquid Chromatography-Tandem Mass Spectrometry Analysis of Its In Vitro Bypass by Human Polymerase ι. Chem Res Toxicol 2021; 34:2567-2578. [PMID: 34860508 PMCID: PMC10518890 DOI: 10.1021/acs.chemrestox.1c00334] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The lipid peroxidation product malondialdehyde and the DNA peroxidation product base-propenal react with dG to generate the exocyclic adduct, M1dG. This mutagenic lesion has been found in human genomic and mitochondrial DNA. M1dG in genomic DNA is enzymatically oxidized to 6-oxo-M1dG, a lesion of currently unknown mutagenic potential. Here, we report the synthesis of an oligonucleotide containing 6-oxo-M1dG and the results of extension experiments aimed at determining the effect of the 6-oxo-M1dG lesion on the activity of human polymerase iota (hPol ι). For this purpose, a liquid chromatography-tandem mass spectrometry (LC-MS/MS) assay was developed to obtain reliable quantitative data on the utilization of poorly incorporated nucleotides. Results demonstrate that hPol ι primarily incorporates deoxycytidine triphosphate (dCTP) and thymidine triphosphate (dTTP) across from 6-oxo-M1dG with approximately equal efficiency, whereas deoxyadenosine triphosphate (dATP) and deoxyguanosine triphosphate (dGTP) are poor substrates. Following the incorporation of a single nucleotide opposite the lesion, 6-oxo-M1dG blocks further replication by the enzyme.
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Affiliation(s)
- Plamen P. Christov
- Department of Chemistry, Vanderbilt University; Vanderbilt Institute of Chemical Biology, Vanderbilt University School of Medicine, Nashville, Tennessee 37232, United States
| | - Robyn Richie-Jannetta
- A. B. Hancock, Jr., Memorial Laboratory for Cancer Research, Departments of Biochemistry, and Pharmacology, Vanderbilt Institute of Chemical Biology, and Vanderbilt-Ingram Cancer Center, Vanderbilt University School of Medicine, Nashville, Tennessee 37232, United States
| | - Philip J. Kingsley
- A. B. Hancock, Jr., Memorial Laboratory for Cancer Research, Departments of Biochemistry, and Pharmacology, Vanderbilt Institute of Chemical Biology, and Vanderbilt-Ingram Cancer Center, Vanderbilt University School of Medicine, Nashville, Tennessee 37232, United States
| | - Anoop Vemulapalli
- A. B. Hancock, Jr., Memorial Laboratory for Cancer Research, Departments of Biochemistry, and Pharmacology, Vanderbilt Institute of Chemical Biology, and Vanderbilt-Ingram Cancer Center, Vanderbilt University School of Medicine, Nashville, Tennessee 37232, United States
| | - Kwangho Kim
- Department of Chemistry, Vanderbilt University; Vanderbilt Institute of Chemical Biology, Vanderbilt University School of Medicine, Nashville, Tennessee 37232, United States
| | - Gary A. Sulikowski
- Department of Chemistry, Vanderbilt University; Vanderbilt Institute of Chemical Biology, Vanderbilt University School of Medicine, Nashville, Tennessee 37232, United States
| | - Carmelo J. Rizzo
- Departments of Chemistry and Biochemistry, Vanderbilt-Ingram Cancer Center, Vanderbilt University, Nashville, Tennessee 37235
| | - Amit Ketkar
- Department of Biochemistry and Molecular Biology, University of Arkansas for Medical Sciences, Little Rock, Arkansas 72205, United States
| | - Robert L. Eoff
- Department of Biochemistry and Molecular Biology, University of Arkansas for Medical Sciences, Little Rock, Arkansas 72205, United States
| | - Carol A. Rouzer
- A. B. Hancock, Jr., Memorial Laboratory for Cancer Research, Departments of Biochemistry, and Pharmacology, Vanderbilt Institute of Chemical Biology, and Vanderbilt-Ingram Cancer Center, Vanderbilt University School of Medicine, Nashville, Tennessee 37232, United States
| | - Lawrence J. Marnett
- Department of Chemistry, Vanderbilt University; Vanderbilt Institute of Chemical Biology, Vanderbilt University School of Medicine, Nashville, Tennessee 37232, United States
- A. B. Hancock, Jr., Memorial Laboratory for Cancer Research, Departments of Biochemistry, and Pharmacology, Vanderbilt Institute of Chemical Biology, and Vanderbilt-Ingram Cancer Center, Vanderbilt University School of Medicine, Nashville, Tennessee 37232, United States
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6
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Song LF, Deng ZH, Gong ZY, Li LL, Li BZ. Large-Scale de novo Oligonucleotide Synthesis for Whole-Genome Synthesis and Data Storage: Challenges and Opportunities. Front Bioeng Biotechnol 2021; 9:689797. [PMID: 34239862 PMCID: PMC8258115 DOI: 10.3389/fbioe.2021.689797] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2021] [Accepted: 05/27/2021] [Indexed: 11/13/2022] Open
Abstract
Over the past decades, remarkable progress on phosphoramidite chemistry-based large-scale de novo oligonucleotide synthesis has been achieved, enabling numerous novel and exciting applications. Among them, de novo genome synthesis and DNA data storage are striking. However, to make these two applications more practical, the synthesis length, speed, cost, and throughput require vast improvements, which is a challenge to be met by the phosphoramidite chemistry. Harnessing the power of enzymes, the recently emerged enzymatic methods provide a competitive route to overcome this challenge. In this review, we first summarize the status of large-scale oligonucleotide synthesis technologies including the basic methodology and large-scale synthesis approaches, with special focus on the emerging enzymatic methods. Afterward, we discuss the opportunities and challenges of large-scale oligonucleotide synthesis on de novo genome synthesis and DNA data storage respectively.
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Affiliation(s)
- Li-Fu Song
- Frontiers Science Center for Synthetic Biology and Key Laboratory of Systems Bioengineering (Ministry of Education), Tianjin University, Tianjin, China
- School of Chemical Engineering and Technology, Tianjin University, Tianjin, China
| | - Zheng-Hua Deng
- Frontiers Science Center for Synthetic Biology and Key Laboratory of Systems Bioengineering (Ministry of Education), Tianjin University, Tianjin, China
- School of Chemical Engineering and Technology, Tianjin University, Tianjin, China
| | - Zi-Yi Gong
- Frontiers Science Center for Synthetic Biology and Key Laboratory of Systems Bioengineering (Ministry of Education), Tianjin University, Tianjin, China
- School of Chemical Engineering and Technology, Tianjin University, Tianjin, China
| | - Lu-Lu Li
- LC-BIO Technologies Co., Ltd., Hangzhou, China
| | - Bing-Zhi Li
- Frontiers Science Center for Synthetic Biology and Key Laboratory of Systems Bioengineering (Ministry of Education), Tianjin University, Tianjin, China
- School of Chemical Engineering and Technology, Tianjin University, Tianjin, China
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7
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Qi H, Ma M, Lai D, Tao SC. Phage display: an ideal platform for coupling protein to nucleic acid. Acta Biochim Biophys Sin (Shanghai) 2021; 53:389-399. [PMID: 33537750 DOI: 10.1093/abbs/gmab006] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2020] [Indexed: 01/07/2023] Open
Abstract
Display technology, especially phage display technology, has been widely applied in many fields. The theoretical core of display technology is the physical linkage between the protein/peptide on the surface of a phage and the coding DNA sequence inside the same phage. Starting from phage-displayed peptide/protein/antibody libraries and taking advantage of the ever-growing power of next-generation sequencing (NGS) for DNA sequencing/decoding, rich protein-related information can easily be obtained in a high-throughput way. Based on this information, many scientific and clinical questions can be readily addressed. In the past few years, aided by the development of NGS, droplet technology, and massive oligonucleotide synthesis, we have witnessed and continue to witness large advances of phage display technology, in both technology development and application. The aim of this review is to summarize and discuss these recent advances.
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Affiliation(s)
- Huan Qi
- Shanghai Center for Systems Biomedicine, Key Laboratory of Systems Biomedicine (Ministry of Education), Shanghai Jiao Tong University, Shanghai 200240, China
| | - Mingliang Ma
- Shanghai Center for Systems Biomedicine, Key Laboratory of Systems Biomedicine (Ministry of Education), Shanghai Jiao Tong University, Shanghai 200240, China
| | - Danyun Lai
- Shanghai Center for Systems Biomedicine, Key Laboratory of Systems Biomedicine (Ministry of Education), Shanghai Jiao Tong University, Shanghai 200240, China
| | - Sheng-ce Tao
- Shanghai Center for Systems Biomedicine, Key Laboratory of Systems Biomedicine (Ministry of Education), Shanghai Jiao Tong University, Shanghai 200240, China
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Horie N, Yamaguchi T, Kumagai S, Obika S. Synthesis and properties of oligonucleotides modified with an N-methylguanidine-bridged nucleic acid (GuNA[Me]) bearing adenine, guanine, or 5-methylcytosine nucleobases. Beilstein J Org Chem 2021; 17:622-629. [PMID: 33747234 PMCID: PMC7940814 DOI: 10.3762/bjoc.17.54] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2020] [Accepted: 02/18/2021] [Indexed: 11/23/2022] Open
Abstract
Chemical modifications have been extensively used for therapeutic oligonucleotides because they strongly enhance the stability against nucleases, binding affinity to the targets, and efficacy. We previously reported that oligonucleotides modified with an N-methylguanidine-bridged nucleic acid (GuNA[Me]) bearing the thymine (T) nucleobase show excellent biophysical properties for applications in antisense technology. In this paper, we describe the synthesis of GuNA[Me] phosphoramidites bearing other typical nucleobases including adenine (A), guanine (G), and 5-methylcytosine (mC). The phosphoramidites were successfully incorporated into oligonucleotides following the method previously developed for the GuNA[Me]-T-modified oligonucleotides. The binding affinity of the oligonucleotides modified with GuNA[Me]-A, -G, or -mC toward the complementary single-stranded DNAs or RNAs was systematically evaluated. All of the GuNA[Me]-modified oligonucleotides were found to have a strong affinity for RNAs. These data indicate that GuNA[Me] could be a useful modification for therapeutic antisense oligonucleotides.
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Affiliation(s)
- Naohiro Horie
- Graduate School of Pharmaceutical Sciences, Osaka University, 1-6 Yamadaoka, Suita, Osaka 565-0871, Japan
| | - Takao Yamaguchi
- Graduate School of Pharmaceutical Sciences, Osaka University, 1-6 Yamadaoka, Suita, Osaka 565-0871, Japan
| | - Shinji Kumagai
- Sohyaku. Innovative Research Division, Mitsubishi Tanabe Pharma Corporation, Shonan Health Innovation Park, 2-26-1 Muraoka-Higashi, Fujisawa, Kanagawa 251-8555, Japan
| | - Satoshi Obika
- Graduate School of Pharmaceutical Sciences, Osaka University, 1-6 Yamadaoka, Suita, Osaka 565-0871, Japan.,National Institutes of Biomedical Innovation, Health and Nutrition (NIBIOHN), 7-6-8 Saito-Asagi, Ibaraki, Osaka 567-0085, Japan
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9
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Yang H, Tang JA, Greenberg MM. Synthesis of Oligonucleotides Containing the N 6 -(2-Deoxy-α,β-d-erythropentofuranosyl)-2,6-diamino-4-hydroxy-5-formamidopyrimidine (Fapy⋅dG) Oxidative Damage Product Derived from 2'-Deoxyguanosine. Chemistry 2020; 26:5441-5448. [PMID: 32271495 DOI: 10.1002/chem.201905795] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2019] [Indexed: 12/19/2022]
Abstract
N6 -(2-Deoxy-α,β-d-erythropentofuranosyl)-2,6-diamino-4-hydroxy-5-formamidopyrimidine (Fapy⋅dG) is a major DNA lesion produced from 2'-deoxyguanosine under oxidizing conditions. Fapy⋅dG is produced from a common intermediate that leads to 7,8-dihydro-8-oxo-2'-deoxyguanosine (8-OxodGuo), and in greater quantities in cells. The impact of Fapy⋅dG on DNA structure and function is much less well understood than that of 8-OxodGuo. This is largely due to the significantly greater difficulty in synthesizing oligonucleotides containing Fapy⋅dG than 8-OxodGuo. We describe a synthetic approach for preparing oligonucleotides containing Fapy⋅dG that will facilitate intensive studies of this lesion in DNA. A variety of oligonucleotides as long as 30 nucleotides are synthesized. We anticipate that the chemistry described herein will provide an impetus for a wide range of studies involving Fapy⋅dG.
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Affiliation(s)
- Haozhe Yang
- Department of Chemistry, Johns Hopkins University, 3400 N. Charles St., Baltimore, MD 21218, USA
| | - Joel A Tang
- Department of Chemistry, Johns Hopkins University, 3400 N. Charles St., Baltimore, MD 21218, USA
| | - Marc M Greenberg
- Department of Chemistry, Johns Hopkins University, 3400 N. Charles St., Baltimore, MD 21218, USA
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10
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Barthel S, Palluk S, Hillson NJ, Keasling JD, Arlow DH. Enhancing Terminal Deoxynucleotidyl Transferase Activity on Substrates with 3' Terminal Structures for Enzymatic De Novo DNA Synthesis. Genes (Basel) 2020; 11:E102. [PMID: 31963235 DOI: 10.3390/genes11010102] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2019] [Revised: 12/31/2019] [Accepted: 01/07/2020] [Indexed: 01/13/2023] Open
Abstract
Enzymatic oligonucleotide synthesis methods based on the template-independent polymerase terminal deoxynucleotidyl transferase (TdT) promise to enable the de novo synthesis of long oligonucleotides under mild, aqueous conditions. Intermediates with a 3′ terminal structure (hairpins) will inevitably arise during synthesis, but TdT has poor activity on these structured substrates, limiting its usefulness for oligonucleotide synthesis. Here, we described two parallel efforts to improve the activity of TdT on hairpins: (1) optimization of the concentrations of the divalent cation cofactors and (2) engineering TdT for enhanced thermostability, enabling reactions at elevated temperatures. By combining both of these improvements, we obtained a ~10-fold increase in the elongation rate of a guanine-cytosine hairpin.
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11
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Malek-Adamian E, Fakhoury J, Arnold AE, Martínez-Montero S, Shoichet MS, Damha MJ. Effect of Sugar 2',4'-Modifications on Gene Silencing Activity of siRNA Duplexes. Nucleic Acid Ther 2019; 29:187-194. [PMID: 31084536 PMCID: PMC6686699 DOI: 10.1089/nat.2019.0792] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022] Open
Abstract
In this study, we explore the effect of a library of 2′-, 4′-, and 2′,4′-modified uridine nucleosides and their impact on silencing firefly luciferase and on down-regulated in renal cell carcinoma (DRR) gene targets. The modifications studied were 2′-F-ribose, 2′-F-arabinose, 2′-OMe-ribose, 2′-F,4′-OMe-ribose, 2′-F,4′-OMe-arabinose, and 2′-OMe,4′-F-ribose. We found that 2′,4′-modifications are well tolerated within A-form RNA duplexes, leading to virtually no change in melting temperature as assessed by UV thermal melting. The impact of the dual (2′,4′) modification was assessed by comparing gene silencing ability to 2′- or 4′- (singly) modified siRNA counterparts. siRNAs with (2′,4′)-modified overhangs generally outperformed the native siRNA as well as siRNAs with a 2′- or 4′-modified overhang, suggesting that 2′,4′-modified nucleotides interact favorably with Argonaute protein's PAZ domain. Among the most active siRNAs were those with 2′-F,4′-OMe-ribose or 2′-F,4′-OMe-arabinose at the overhangs. When modifications were placed at both overhangs and internal positions, a duplex with the 2′-F (internal) and 2′-F,4′-OMe (overhang) combination was found to be the most potent, followed by the duplex with 2′-OMe (internal) and 2′,4′-diOMe (overhang) modifications. Given the nuclease resistance exhibited by 2′,4′-modified siRNAs, particularly when the modification is placed at or near the overhangs, these findings may allow the creation of superior siRNAs for therapy.
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Affiliation(s)
| | - Johans Fakhoury
- 1Department of Chemistry, McGill University, Montreal, Canada
| | - Amy E Arnold
- 2Department of Chemical Engineering and Applied Chemistry, University of Toronto, Toronto, Canada
| | | | - Molly S Shoichet
- 2Department of Chemical Engineering and Applied Chemistry, University of Toronto, Toronto, Canada.,3Institute of Biomaterials and Biomedical Engineering, University of Toronto, Toronto, Canada.,4Department of Chemistry, University of Toronto, Toronto, Canada
| | - Masad J Damha
- 1Department of Chemistry, McGill University, Montreal, Canada
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Abstract
Naturally occurring DNA is encoded by the four nucleobases adenine, cytosine, guanine and thymine. Yet minor chemical modifications to these bases, such as methylation, can significantly alter DNA function, and more drastic changes, such as replacement with unnatural base pairs, could expand its function. In order to realize the full potential of DNA in therapeutic and synthetic biology applications, our ability to 'write' long modified DNA in a controlled manner must be improved. This review highlights methods currently used for the synthesis of moderately long chemically modified nucleic acids (up to 1000 bp), their limitations and areas for future expansion.
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O'Flaherty DK, Wilds CJ. Preparation of Intrastrand {G}O(6) -Alkylene-O(6) {G} Cross-Linked Oligonucleotides. ACTA ACUST UNITED AC 2016; 66:5.17.1-5.17.24. [PMID: 27584704 DOI: 10.1002/cpnc.14] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
This unit describes the preparation O(6) -2'-deoxyguanosine-butylene-O(6) -2'-deoxyguanosine dimer phosphoramidites and precursors for incorporation of site-specific intrastrand cross-links (IaCL) into DNA oligonucleotides. Protected 2'-deoxyguanosine dimers are produced using the Mitsunobu reaction. IaCL DNA containing the intradimer phosphodiester are first chemically phosphorylated, followed by a ring-closing reaction using the condensing reagent 1-(2-mesitylenesulfonyl)-3-nitro-1H-1,2,4-triazole. Phosphoramidites are incorporated into oligonucleotides by solid-phase synthesis and standard deprotection and cleavage protocols are employed. This approach allows for the preparation of IaCL DNA substrates in amounts and purity amenable for biophysical characterization, and biochemical studies as substrates to investigate DNA repair and bypass pathways. © 2016 by John Wiley & Sons, Inc.
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Affiliation(s)
- Derek K O'Flaherty
- Department of Chemistry and Biochemistry, Concordia University, Montréal, Québec, Canada
| | - Christopher J Wilds
- Department of Chemistry and Biochemistry, Concordia University, Montréal, Québec, Canada
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14
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Abstract
Bacterial and viral CpG oligonculeotides are unmethylated cytosine-phosphate-guanosine dinucleotide sequences and trigger an innate immune response through activation of the toll-like receptor 9 (TLR9). We have developed synthetic photocaged CpGs via site-specific incorporation of nitropiperonyloxymethyl (NPOM)-caged thymidine residues. These oligonucleotides enable the optical control of TLR9 function and thereby provide light-activation of an immune response. We provide a proof-of-concept model by applying a reporter assay in live cells and by quantification of endogenous production of interleukin 6.
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Affiliation(s)
| | | | - Mark O Lively
- Wake Forest University School of Medicine, Winston-Salem, NC 27157
| | - Alexander Deiters
- North Carolina State University, Raleigh, NC 27167 ; University of Pittsburgh, Pittsburgh, PA 15260
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O'Flaherty DK, McManus FP, Noronha AM, Wilds CJ. Synthesis of building blocks and oligonucleotides containing {T}O4-alkylene-O4{T} interstrand cross-links. ACTA ACUST UNITED AC 2014; 55:5.13.1-19. [PMID: 25631535 DOI: 10.1002/0471142700.nc0513s55] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
This protocol describes the preparation of O(4)-thymidine-alkylene-O(4)-thymidine dimer bis-phosphoramidites and precursors for incorporation into DNA sequences to produce site-specific DNA interstrand cross-links. Linkers are introduced at the 4-position of thymidine by reacting the sodium salt of a diol with a pyrimidinyl-convertible nucleoside to produce mono-adducts, which then undergo reaction with a stoichiometric equivalent of a pyrimidinyl-convertible nucleoside under basic conditions to form O(4)-thymidine-alkylene-O(4)-thymidine dimers. Bis-phosphoramidites are incorporated into oligonucleotides by solid-phase synthesis, and mild conditions for deprotection and cleavage from the solid support are employed to prevent degradation of the thymidine modifications. Purification of these cross-linked oligonucleotides is performed by denaturing polyacrylamide gel electrophoresis. This approach allows for the preparation of cross-linked DNA substrates in quantities and purity sufficient for a wide range of biophysical experiments and biochemical studies as substrates to investigate DNA repair pathways.
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Affiliation(s)
- Derek K O'Flaherty
- Department of Chemistry and Biochemistry, Concordia University, Montréal, Québec, Canada
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16
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Abramova TV, Morozova OB, Silnikov VN, Yurkovskaya AV. Synthesis of nucleotide-amino acid conjugates designed for photo-CIDNP experiments by a phosphotriester approach. Beilstein J Org Chem 2013; 9:2898-909. [PMID: 24367455 PMCID: PMC3869286 DOI: 10.3762/bjoc.9.326] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2013] [Accepted: 11/15/2013] [Indexed: 11/23/2022] Open
Abstract
Conjugates of 2’-deoxyguanosine, L-tryptophan and benzophenone designed to study pathways of fast radical reactions by the photo Chemically Induced Dynamic Nuclear Polarization (photo-CIDNP) method were obtained by the phosphotriester block liquid phase synthesis. The phosphotriester approach to the oligonucleotide synthesis was shown to be a versatile and economic strategy for preparing the required amount of high quality samples of nucleotide–amino acid conjugates.
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Affiliation(s)
- Tatyana V Abramova
- Institute of Chemical Biology and Fundamental Medicine, SB RAS, Lavrent'ev Ave, 8, Novosibirsk 630090, Russia ; Novosibirsk State University, Pirogova St. 2, Novosibirsk 630090, Russia
| | - Olga B Morozova
- Novosibirsk State University, Pirogova St. 2, Novosibirsk 630090, Russia ; International Tomography Center, SB RAS, Institutskaya 3a, Novosibirsk 630090, Russia
| | - Vladimir N Silnikov
- Institute of Chemical Biology and Fundamental Medicine, SB RAS, Lavrent'ev Ave, 8, Novosibirsk 630090, Russia
| | - Alexandra V Yurkovskaya
- Novosibirsk State University, Pirogova St. 2, Novosibirsk 630090, Russia ; International Tomography Center, SB RAS, Institutskaya 3a, Novosibirsk 630090, Russia
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Aviñó A, Mazzini S, Ferreira R, Gargallo R, Marquez VE, Eritja R. The effect on quadruplex stability of North-nucleoside derivatives in the loops of the thrombin-binding aptamer. Bioorg Med Chem 2012; 20:4186-93. [PMID: 22727781 PMCID: PMC3534854 DOI: 10.1016/j.bmc.2012.06.005] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2012] [Revised: 05/31/2012] [Accepted: 06/02/2012] [Indexed: 11/29/2022]
Abstract
Modified thrombin-binding aptamers (TBAs) carrying uridine (U), 2'-deoxy-2'-fluorouridine (FU) and North-methanocarbathymidine (NT) residues in the loop regions were synthesized and analyzed by UV thermal denaturation experiments and CD spectroscopy. The replacement of thymidines in the TGT loop by U and FU results in an increased stability of the antiparallel quadruplex structure described for the TBA while the presence of NT residues in the same positions destabilizes the antiparallel structure. The substitution of the thymidines in the TT loops for U, FU and NT induce a destabilization of the antiparallel quadruplex, indicating the crucial role of these positions. NMR studies on TBAs modified with uridines at the TGT loop also confirm the presence of the antiparallel quadruplex structure. Nevertheless, replacement of two Ts in the TT loops by uridine gives a more complex scenario in which the antiparallel quadruplex structure is present along with other partially unfolded species or aggregates.
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Affiliation(s)
- Anna Aviñó
- Institute for Research in Biomedicine (IRB Barcelona), Networking Center on Bioengineering, Biomaterials and Nanomedicine (CIBER-BBN) and Institute for Advanced Chemistry of Catalonia (IQAC), CSIC, Baldiri Reixac 10, E-08028 Barcelona. Spain
| | - Stefania Mazzini
- Dipartimento di Scienze Molecolari Agroalimentari, Università degli Studi di Milano, via Celoria 2, 20133 Milano, Italy
| | - Ruben Ferreira
- Institute for Research in Biomedicine (IRB Barcelona), Networking Center on Bioengineering, Biomaterials and Nanomedicine (CIBER-BBN) and Institute for Advanced Chemistry of Catalonia (IQAC), CSIC, Baldiri Reixac 10, E-08028 Barcelona. Spain
| | - Raimundo Gargallo
- Department of Analytical Chemistry, University of Barcelona, Diagonal 647, E-08028 Barcelona, Spain
| | - Victor E. Marquez
- Chemical Biology Laboratory, Center for Cancer Research, National Cancer Institute at Frederick, Frederick, Maryland 21702. USA
| | - Ramon Eritja
- Institute for Research in Biomedicine (IRB Barcelona), Networking Center on Bioengineering, Biomaterials and Nanomedicine (CIBER-BBN) and Institute for Advanced Chemistry of Catalonia (IQAC), CSIC, Baldiri Reixac 10, E-08028 Barcelona. Spain
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Abstract
Microfluidic reactors exhibit intrinsic advantages of reduced chemical consumption, safety, high surface-area-to-volume ratios, and improved control over mass and heat transfer superior to the macroscopic reaction setting. In contract to a continuous-flow microfluidic system composed of only a microchannel network, an integrated microfluidic system represents a scalable integration of a microchannel network with functional microfluidic modules, thus enabling the execution and automation of complicated chemical reactions in a single device. In this review, we summarize recent progresses on the development of integrated microfluidics-based chemical reactors for (i) parallel screening of in situ click chemistry libraries, (ii) multistep synthesis of radiolabeled imaging probes for positron emission tomography (PET), (iii) sequential preparation of individually addressable conducting polymer nanowire (CPNW), and (iv) solid-phase synthesis of DNA oligonucleotides. These proof-of-principle demonstrations validate the feasibility and set a solid foundation for exploring a broad application of the integrated microfluidic system.
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Affiliation(s)
- Wei-Yu Lin
- Department of Molecular and Medical Pharmacology, Crump institute for Molecular Imaging (CIMI), Institute for Molecular Medicine (IMED), California NanoSystems Institute (CNSI), University of California, Los Angeles, Los Angeles, CA, USA
| | - Yanju Wang
- Department of Molecular and Medical Pharmacology, Crump institute for Molecular Imaging (CIMI), Institute for Molecular Medicine (IMED), California NanoSystems Institute (CNSI), University of California, Los Angeles, Los Angeles, CA, USA
| | - Shutao Wang
- Department of Molecular and Medical Pharmacology, Crump institute for Molecular Imaging (CIMI), Institute for Molecular Medicine (IMED), California NanoSystems Institute (CNSI), University of California, Los Angeles, Los Angeles, CA, USA
| | - Hsian-Rong Tseng
- Department of Molecular and Medical Pharmacology, Crump institute for Molecular Imaging (CIMI), Institute for Molecular Medicine (IMED), California NanoSystems Institute (CNSI), University of California, Los Angeles, Los Angeles, CA, USA
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Bogard CM, Arazi B, Rouchka EC. Toward DNA-based Security Circuitry: First Step - Random Number Generation. Conf Proc (Midwest Symp Circuits Syst) 2008; 51:597-600. [PMID: 20436783 PMCID: PMC2861576 DOI: 10.1109/mwscas.2008.4616870] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
Abstract
DNA-based circuit design is an area of research in which traditional silicon-based technologies are replaced by naturally occurring phenomena taken from biochemistry and molecular biology. Our team investigates the implications of DNA-based circuit design in serving security applications. As an initial step we develop a random number generation circuitry. A novel prototype schema employs solid-phase synthesis of oligonucleotides for random construction of DNA sequences. Temporary storage and retrieval is achieved through plasmid vectors.
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Affiliation(s)
- Christy M. Bogard
- University of Louisville, Computer Engineering and Computer Science Department, Louisville, KY 40292 USA. ()
| | - Benjamin Arazi
- Ben-Gurion University, Department of Electrical and Computer Engineering, Israel. ()
| | - Eric C. Rouchka
- University of Louisville, Computer Engineering and Computer Science Department, Louisville, KY 40292 USA. (phone: 502-852-1695; fax: 502-852-4713; )
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