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Retracted HIV Study Provides New Information about the Status of the in Vitro Inhibition of DNA Replication by Backbone Methylation

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ABSTRACT
In this publication attention is given to a retracted article in Science at the end of 1990 concerning the HIV-1 inhibition by a modified backbone DNA as the phosphatemethylated DNA. A disproportion in the presented data resulted in a faulty generalization of the (bio)chemical characteristics of the phosphatemethylated DNA (18- and 20-nucleotides). In the confusion and the outside pressure a related study in Nucleic Acids Research on the in vitro dynamics of a regiospecific inhibition of DNA duplication with long (20- and 18-nucleotides) and short (8-nucleotides) phosphatemethylated DNA was completely ignored. A restoration will be given based on a comprehensive view demonstrating the unique molecular and conformational properties of phosphatemethylated DNA in their (bio)chemistry towards natural DNA and RNA (HIV-1 RNA loops).
 
Cite this paper
Buck, H. (2015) Retracted HIV Study Provides New Information about the Status of the in Vitro Inhibition of DNA Replication by Backbone Methylation. Journal of Biophysical Chemistry, 6, 29-34. doi: 10.4236/jbpc.2015.61003.
 
References
[1]Moody, H.M., Quaedflieg, P.J.L.M., Koole, L.H., van Genderen, M.H.P., Buck, H.M., Smit, L., Jurriaans, S., Geelen, J.L.M.C. and Goudsmit, J. (1990) Inhibition of HIV-1 Infectivity by Phosphate-Methylated DNA: Retraction. Science, 250, 125-126.
http://dx.doi.org/10.1126/science.2218505
 
[2]Buck, H.M. (1999) A New Strategy for DNA Inhibition with Backbone Substituted DNA Analogues. Nucleosides Nucleotides Nucleic Acids, 18, 1397-1398.
http://dx.doi.org/10.1080/07328319908044729
 
[3]Buck, H.M. (2004) The Chemical and Biochemical Properties of Methylphosphotriester DNA. Nucleosides Nucleotides Nucleic Acids, 23, 1833-1847.
http://dx.doi.org/10.1081/NCN-200040620
 
[4]Buck, H.M. (2007) The Chemical and Biochemical Properties of Methylphophotriester DNA and RNA in Comparison with Their Corresponding Methylphosphonates: A Dynamical Model Description. Nucleosides Nucleotides Nucleic Acids, 26, 205-222.
http://dx.doi.org/10.1080/15257770601112812
 
[5]Buck, H.M. (2011) DNA Systems for B-Z Transitions and Their Significance as Epigenetic Model: The Fundamental Role of the Methyl Group. Nucleosides Nucleotides Nucleic Acids, 30, 918-944.
http://dx.doi.org/10.1080/15257770.2011.620580
 
[6]Buck, H.M. (2013) A Conformational B-Z DNA Study Monitored with Phosphatemethylated DNA as a Model for Epigenetic Dynamics Focused on 5-(Hydroxyl)Methylcytosine. Journal of Biophysical Chemistry, 4, 37-46.
http://dx.doi.org/10.4236/jbpc.2013.42005
 
[7]Moody, H.M., van Genderen, M.H.P., Koole, L.H., Kocken, H.J.M., Meijer, E.M. and Buck, H.M. (1989) Regiospecific Inhibition of DNA Duplication by Antisense Phosphate-Methylated Oligodeoxynucleotides. Nucleic Acids Research, 17, 4769-4782.
http://dx.doi.org/10.1093/nar/17.12.4769
 
[8]Buck, H.M., Koole, L.H., van Genderen, M.H.P., Smit, L., Geelen, J.L.M.C. and Goudsmit, J. (1990) Phosphate-Methylated DNA Aimed at HIV-1 RNA Loops and Integrated DNA Inhibits Viral Infectivity. Science, 248, 208-212.
http://dx.doi.org/10.1126/science.2326635
 
[9]Koole, L.H., Moody, H.M., Broeders, N.L.H.L., Quaedflieg, P.J.L.M., Kuijpers, W.H.A., van Genderen, M.H.P., Coenen, A.J.J.M., van der Wal, S. and Buck, H.M. (1989) Synthesis of Phosphate-Methylated DNA Fragments Using 9-Fluorenylmethoxy-Carbonyl as Transient Base Protecting Group. Journal of Organic Chemistry, 54, 1657-1664.
http://dx.doi.org/10.1021/jo00268a030
 
[10]Eijgenraam, F. (1991) Dutch Aids Researchers Feel Heat of Publicity. Science, 251, 1422-1423.
http://dx.doi.org/10.1126/science.2006416
 
[11]Iyer, R.P. (2012) Private Communication.
 
[12]Iyer, R.P., Yu, D., Ho, N.-H., Devlin, T. and Agrawal, S. (1995) Methyl Phosphotriester Oligonucleotides: Facile Synthesis Using N-Pent-4-Enoyl Nucleoside Phosphoramidites. Journal of Organic Chemistry, 60, 8132-8133.
http://dx.doi.org/10.1021/jo00130a008
 
[13]Iyer, R.P. (1999) Process for Making Oligonucleotides Containing O-and S-Methylphosphotriester Internucleoside Linkages. US Patent No. 5955599.
 
[14]Iyer, R.P. (2010) Nucleic Acid-Based Compounds and Methods of Use Thereof. US Patent No. 7709449.
 
[15]Kocken, H.J.M. (1989) Escherichia coli Para-Aminobenzoate Synthase Component I. Cloning, Sequence and in Vitro Mutagenesis of pabB. Ph.D. Thesis, University of Technology, Eindhoven.
 
[16]Song, W., Dominska, M., Greenwell, P.W. and Petes, T.D. (2014) Genome-Wide High Resolution Mapping of Chromosome Fragile Sites in Saccharomyces cerevisiae. Proceedings of the National Academy Science USA, 111, E2210- E2218.
http://dx.doi.org/10.1073/pnas.1406847111
 
[17]Kuijpers, W.H.A., Huskens, J., Koole, L.H. and van Boeckel, C.A.A. (1990) Synthesis of Well-Defined Phosphate- Methylated DNA Fragments: The Application of Potassium Carbonate in Methanol as Deprotecting Reagent. Nucleic Acids Research, 18, 5197-5205.
http://dx.doi.org/10.1093/nar/18.17.5197
 
[18]Maddox, J. (1990) Dutch Cure for Aids Is Discredited. Nature, 347, 411.
http://dx.doi.org/10.1038/347411a0
 
[19]Ma, C.D., Wang, C., Acevedo-Vélez, C., Gellman, S.H. and Abbott, N.L. (2015) Modulation of Hydrophobic Interactions by Proximally Immobilized Ions. Nature, 517, 347-350.
http://dx.doi.org/10.1038/nature14018                                            eww150129lx

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