Glowing Locked Nucleic Acids: Brightly Fluorescent Probes for Detection of Nucleic Acids in Cells

2010 ◽  
Vol 132 (40) ◽  
pp. 14221-14228 ◽  
Author(s):  
Michael E. Østergaard ◽  
Pallavi Cheguru ◽  
Madhusudhan R. Papasani ◽  
Rodney A. Hill ◽  
Patrick J. Hrdlicka
Keyword(s):  
Nucleic Acids ◽  
Fluorescent Probes ◽  
Locked Nucleic Acids ◽  
In Cells

Detection of Nucleic Acids in Cells or Tissue Sections Using In situ Polymerase Chain Reaction (PCR)

1996 ◽  
Vol 54 ◽  
pp. 16-17
Author(s):  
J. R. Hully ◽  
K. R. Luehrsen ◽  
K. Aoyagi ◽  
C. Shoemaker ◽  
R. Abramson
Keyword(s):  
Nucleic Acids ◽  
Viral Infections ◽  
Anatomical Location ◽  
Rt Pcr ◽  
Reverse Transcription Pcr ◽  
Cellular Source ◽  
Gene Transcripts ◽  
Initial Description ◽  
In Cells

The development of PCR technology has greatly accelerated medical research at the genetic and molecular levels. Until recently, the inherent sensitivity of this technique has been limited to isolated preparations of nucleic acids which lack or at best have limited morphological information. With the obvious exception of cell lines, traditional PCR or reverse transcription-PCR (RT-PCR) cannot identify the cellular source of the amplified product. In contrast, in situ hybridization (ISH) by definition, defines the anatomical location of a gene and/or it’s product. However, this technique lacks the sensitivity of PCR and cannot routinely detect less than 10 to 20 copies per cell. Consequently, the localization of rare transcripts, latent viral infections, foreign or altered genes cannot be identified by this technique. In situ PCR or in situ RT-PCR is a combination of the two techniques, exploiting the sensitivity of PCR and the anatomical definition provided by ISH. Since it’s initial description considerable advances have been made in the application of in situ PCR, improvements in protocols, and the development of hardware dedicated to in situ PCR using conventional microscope slides. Our understanding of the importance of viral latency or viral burden in regards to HIV, HPV, and KSHV infections has benefited from this technique, enabling detection of single viral copies in cells or tissue otherwise thought to be normal. Clearly, this technique will be useful tool in pathobiology especially carcinogenesis, gene therapy and manipulations, the study of rare gene transcripts, and forensics.

scholarly journals Kinetics of DNA Strand Displacement Systems with Locked Nucleic Acids

2017 ◽  
Vol 121 (12) ◽  
pp. 2594-2602 ◽  
Author(s):  
Xiaoping Olson ◽  
Shohei Kotani ◽  
Bernard Yurke ◽  
Elton Graugnard ◽  
William L. Hughes
Keyword(s):  
Nucleic Acids ◽  
Strand Displacement ◽  
Dna Strand Displacement ◽  
Locked Nucleic Acids ◽  
Dna Strand ◽  
Kinetics Of

scholarly journals Silencing Antibiotic Resistance with Antisense Oligonucleotides

Biomedicines ◽  
2021 ◽  
Vol 9 (4) ◽  
pp. 416
Author(s):  
Saumya Jani ◽  
Maria Soledad Ramirez ◽  
Marcelo E. Tolmasky
Keyword(s):  
Antibiotic Resistance ◽  
Nucleic Acids ◽  
Antisense Oligonucleotides ◽  
Bacterial Infections ◽  
Genetic Disorders ◽  
Antibiotic Resistance Genes ◽  
Short Review ◽  
Rnase H ◽  
Biological Processes ◽  
Locked Nucleic Acids

Antisense technologies consist of the utilization of oligonucleotides or oligonucleotide analogs to interfere with undesirable biological processes, commonly through inhibition of expression of selected genes. This field holds a lot of promise for the treatment of a very diverse group of diseases including viral and bacterial infections, genetic disorders, and cancer. To date, drugs approved for utilization in clinics or in clinical trials target diseases other than bacterial infections. Although several groups and companies are working on different strategies, the application of antisense technologies to prokaryotes still lags with respect to those that target other human diseases. In those cases where the focus is on bacterial pathogens, a subset of the research is dedicated to produce antisense compounds that silence or reduce expression of antibiotic resistance genes. Therefore, these compounds will be adjuvants administered with the antibiotic to which they reduce resistance levels. A varied group of oligonucleotide analogs like phosphorothioate or phosphorodiamidate morpholino residues, as well as peptide nucleic acids, locked nucleic acids and bridge nucleic acids, the latter two in gapmer configuration, have been utilized to reduce resistance levels. The major mechanisms of inhibition include eliciting cleavage of the target mRNA by the host’s RNase H or RNase P, and steric hindrance. The different approaches targeting resistance to β-lactams include carbapenems, aminoglycosides, chloramphenicol, macrolides, and fluoroquinolones. The purpose of this short review is to summarize the attempts to develop antisense compounds that inhibit expression of resistance to antibiotics.

FISHing with locked nucleic acids (LNA): evaluation of different LNA/DNA mixmers

2003 ◽  
Vol 17 (4) ◽  
pp. 165-169 ◽  
Author(s):  
Asli N Silahtaroglu ◽  
Niels Tommerup ◽  
Henrik Vissing
Keyword(s):  
Nucleic Acids ◽  
Locked Nucleic Acids

Locked nucleic acids (LNA) and medical applications

2003 ◽  
Vol 10 (3-4) ◽  
pp. 325-334 ◽  
Author(s):  
Henrik Ørum ◽  
Andreas Wolter ◽  
Lars Kongsbak
Keyword(s):  
Nucleic Acids ◽  
Medical Applications ◽  
Locked Nucleic Acids

Increase in Hybridization Rates with Oligodeoxyribonucleotides Containing Locked Nucleic Acids

2006 ◽  
Vol 24 (2) ◽  
pp. 171-182 ◽  
Author(s):  
Thomas K. Ormond ◽  
Daniel Spear ◽  
Jacqueline Stoll ◽  
Megan A. Mackey ◽  
Pamela M. St. John
Keyword(s):  
Nucleic Acids ◽  
Locked Nucleic Acids

Enhanced Inhibition of Transcription Start by Targeting with 2′-OMe Pentaribonucleotides Comprising Locked Nucleic Acids and Intercalating Nucleic Acids

ChemBioChem ◽  
2005 ◽  
Vol 6 (7) ◽  
pp. 1181-1184 ◽  
Author(s):  
Vyacheslav V. Filichev ◽  
Birte Vester ◽  
Lykke H. Hansen ◽  
Mohammed T. Abdel Aal ◽  
B. Ravindra Babu ◽  
...  
Keyword(s):  
Nucleic Acids ◽  
Transcription Start ◽  
Locked Nucleic Acids
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