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 PMID:29207465  

γPNA FRET Pair Miniprobes for Quantitative Fluorescent In Situ Hybridization to Telomeric DNA in Cells and Tissue.

Alexander Orenstein | April S Berlyoung | Elizabeth E Rastede | Ha H Pham | Elise Fouquerel | Connor T Murphy | Brian J Leibowitz | Jian Yu | Tumul Srivastava | Bruce A Armitage | Patricia L Opresko
Molecules (Basel, Switzerland) | 2017

Measurement of telomere length by fluorescent in situ hybridization is widely used for biomedical and epidemiological research, but there has been relatively little development of the technology in the 20 years since it was first reported. This report describes the use of dual gammaPNA (γPNA) probes that hybridize at alternating sites along a telomere and give rise to Förster resonance energy transfer (FRET) signals. Bright staining of telomeres is observed in nuclei, chromosome spreads and tissue samples. The use of FRET detection also allows for elimination of wash steps, normally required to remove unhybridized probes that would contribute to background signals. We found that these wash steps can diminish the signal intensity through the removal of bound, as well as unbound probes, so eliminating these steps not only accelerates the process but also enhances the quality of staining. Thus, γPNA FRET pairs allow for brighter and faster staining of telomeres in a wide range of research and clinical formats.

Pubmed ID: 29207465

Research resources used in this publication

None found

Antibodies used in this publication

None found

Associated grants

  • Agency: NIEHS NIH HHS, United States
    Id: K99 ES027028
  • Agency: NIEHS NIH HHS, United States
    Id: R01 ES022944
  • Agency: NIGMS NIH HHS, United States
    Id: R44 GM108187

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