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Human papilloma virus detection by in situ hybridisation signal amplification based on biotinylated tyramine deposition
  1. P J Poddighe,
  2. J Bulten,
  3. H M J Kerstens,
  4. J C M Robben,
  5. W J G Melchers,
  6. A G J M Hanselaar
  1. Department of Pathology, University Hospital Nijmegen, The Netherlands
  2. Department of Medical Microbiology


    Aim—To describe a method for amplifying human papilloma virus (HPV) in situ hybridisation (ISH) signals.

    Methods—Three human cervical cell lines, namely CaSKi, HeLa and SiHa, containing different copy numbers of integrated HPV DNA were studied. Following ISH, catalysed reporter deposition (CARD), based on the deposition of biotinylated tyramine at the location of the DNA probe, was used to amplify the ISH signal.

    Results—Using CARD-ISH, one to three HPV type 16 copies were detected in situ both in cell suspensions and paraffin wax sections of SiHa cells. CARD-ISH can also be used to detect oncogenic HPV DNA sequences, such as HPV types 16 and 18, in routinely processed formalin fixed, paraffin wax embedded cervical specimens.

    Conclusions—CARD-ISH is a fast and highly sensitive ISH method for the routine detection of low copy number HPV DNA sequences in cervical cell lines and routinely processed tissue sections. Application of this technology also enables the routine detection and cellular localisation of other viral DNA sequences present at copy numbers below the detection limit of conventional ISH methods.

    • in situ hybridisation
    • signal amplification
    • cell lines
    • human papilloma virus
    • cervix uteri

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