Modulation of Telomerase Activity in Cancer Cells by Dietary Compounds: A Review

Area of Science:

• Oncology
• Molecular Biology
• Nutritional Science

Background:

• Telomerase is highly expressed in most human cancers but not in normal somatic cells, making it a promising cancer treatment target.
• Dietary compounds have demonstrated the ability to modulate telomerase activity in cancer cells, influencing therapeutic strategies.
• Understanding the dual role of dietary factors in telomerase regulation is crucial for cancer research.

Purpose of the Study:

• To review the current knowledge on how dietary factors affect telomerase regulation in cancer cells.
• To discuss the molecular mechanisms through which dietary compounds influence telomerase activity.
• To explore the potential of dietary compounds as telomerase inhibitors or activators in cancer treatment.

Main Methods:

• Literature review of studies investigating dietary compounds and telomerase activity.
• Analysis of molecular mechanisms, including direct enzymatic inhibition and downregulation of human telomerase reverse transcriptase (hTERT) expression.
• Categorization of dietary telomerase inhibitors and activators based on their action.

Main Results:

• Some dietary compounds directly inhibit telomerase activity (e.g., catechin).
• Other dietary compounds downregulate human telomerase reverse transcriptase (hTERT) expression via signaling pathways (e.g., retinoic acid).
• Certain dietary components, like genistein, can induce telomerase activity, potentially promoting tumor progression.

Conclusions:

• Dietary factors represent a significant area for exploring novel cancer therapeutics targeting telomerase.
• The dual action of dietary compounds on telomerase necessitates careful consideration in cancer management.
• Further research into the molecular mechanisms of dietary telomerase modulators can uncover new therapeutic avenues.