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Related Experiment Videos

Human telomerase reverse transcriptase expression in oral carcinogenesis--a preliminary report.

S K S Kumar1, R B Zain, S M Ismail

  • 1Dept. of Oral Pathology, Oral Medicine and Periodontology, Faculty of Dentistry, University of Malaya, Kuala Lumpur Malaysia. satishkumarshyamkumar@yahoo.com

Journal of Experimental & Clinical Cancer Research : CR
|February 14, 2006
PubMed
Summary

Human telomerase reverse transcriptase (hTERT) protein is upregulated in oral carcinogenesis. Increased hTERT expression correlates with advanced histological stages, suggesting its potential as a diagnostic marker for oral cancer.

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Area of Science:

  • Oncology
  • Molecular Biology
  • Cell Biology

Background:

  • Human telomerase reverse transcriptase (hTERT) is the catalytic subunit of telomerase, crucial for cellular immortalization and tumorigenesis.
  • Telomerase activity is implicated in cancer development, making hTERT a key molecule of interest.
  • Detecting hTERT in situ aids in localizing telomerase-positive cells, vital for understanding cancer progression.

Purpose of the Study:

  • To detect hTERT protein expression in multistep oral carcinogenesis.
  • To investigate the relationship between hTERT expression and histological stages of oral cancer.
  • To evaluate the potential of hTERT as a diagnostic or prognostic marker.

Main Methods:

  • Immunohistochemistry (IHC) technique was employed to detect hTERT protein.

Related Experiment Videos

  • Paraffin-embedded tissue samples from normal, hyperplastic, dysplastic, and neoplastic oral epithelia were analyzed.
  • hTERT-labelling index and nuclear staining intensities were determined.

    • Main Results:

    • hTERT protein expression was significantly increased in dysplastic and neoplastic oral epithelia compared to normal.
    • Intense hTERT staining was observed in basal, parabasal, and superficial layers of cancerous tissues, unlike normal mucosa.
    • hTERT protein levels elevated with the progression of oral carcinogenesis through histological stages.

    Conclusions:

    • hTERT protein expression is upregulated during oral cancer progression.
    • IHC detection of hTERT protein shows promise as a potential diagnostic or prognostic marker in oral carcinogenesis.
    • Further studies may validate hTERT as a valuable tool in oral cancer management.