Cancer Tissue Classification, Associated Therapeutic Implications and PDT as an Alternative
Tamarisk K Horne1, Marianne J Cronje2
1Biochemistry Department, University of Johannesburg, Johannesburg, South Africa.
Abstract:
Carcinogenesis occurs via mutation of critical genes conferring enhanced survival and protection to the ensuing tissue. Current therapies in use garner success due to their specificity for certain intracellular targets. This particularity, whist beneficial in identifying tumorigenic from normal tissue states, is limited by the variations in geno/phenotypic profiles displayed between tumor tissue types. As such, tissue-specific therapeutic combinations and adjuvants are often required for adequate effect, but present symptomatic complications and occasionally generate secondary carcinogenesis displaying multi-drug resistance (MDR). An accumulation of research over the recent years has suggested that photodynamic therapy (PDT) with macrocycle photosensitizers are a promising alternative. Its administration method and toxicity mechanism present attractive features for potentially overcoming MDR cancers of multiple tissue origins with limited symptomatic onsets. Herein, we highlight these potentials as referenced against existing therapeutics and consider the impact of macrocycle-PDT for broad spectrum application regardless of tumorigenic resistance profiles.
Insights
Photodynamic therapy (PDT) using macrocycle photosensitizers shows promise for treating multi-drug resistant (MDR) cancers. This approach offers a potential alternative to current therapies with fewer side effects and broader applicability.
Area of Science:
- Oncology
- Photochemistry
- Biomedical Engineering
Background:
- Cancer arises from genetic mutations leading to uncontrolled cell growth.
- Current cancer therapies target specific intracellular pathways but face limitations due to tumor heterogeneity and multi-drug resistance (MDR).
- Existing treatments can cause side effects and sometimes induce secondary cancers with MDR.
Purpose of the Study:
- To evaluate photodynamic therapy (PDT) with macrocycle photosensitizers as a potential alternative for treating cancers.
- To explore PDT's advantages in overcoming MDR and reducing symptomatic complications.
- To assess the broad-spectrum applicability of macrocycle-PDT across various tumor types and resistance profiles.
Main Methods:
- Review of recent research on photodynamic therapy (PDT) and macrocycle photosensitizers.
- Comparative analysis of PDT's administration and toxicity mechanisms against existing cancer therapeutics.
- Evaluation of PDT's potential to address multi-drug resistance (MDR) in various cancer types.
Main Results:
- Macrocycle-PDT demonstrates promising features for overcoming MDR cancers.
- PDT's administration and toxicity mechanisms offer potential advantages over conventional therapies.
- The approach suggests potential for broad-spectrum application irrespective of tumor resistance profiles.
Conclusions:
- Photodynamic therapy (PDT) with macrocycle photosensitizers presents a viable strategy for combating multi-drug resistant (MDR) cancers.
- This therapeutic modality may offer reduced symptomatic onsets compared to current treatments.
- Macrocycle-PDT holds potential for wide-ranging clinical application in oncology.
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