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08:49
A 3D Organotypic Melanoma Spheroid Skin Model
Published on: May 18, 2018
Personalized therapy for metastatic melanoma: could timing be everything?
Roxana S Dronca1, Alexey A Leontovich, Wendy K Nevala
1Department of Medical Oncology, Mayo Clinic, Rochester, MN, USA. dronca.roxana@mayo.edu
Future Oncology (London, England)
|November 15, 2012
Summary
Immune rhythms in advanced melanoma patients differ from healthy individuals, showing chronic inflammation. Synchronizing chemotherapy with these unique immune biorhythms may improve patient outcomes.
Area of Science:
- Immunology
- Chronobiology
- Oncology
Background:
- Immune processes in humans exhibit temporal regulation, including circadian variations in immunity modulated by the hypothalamic-pituitary-adrenal axis.
- Advanced melanoma is associated with systemic immunity repolarized towards chronic inflammation (Th2 dominance).
- This altered immune state in melanoma appears governed by infradian biorhythms beyond typical 24-hour circadian patterns.
Purpose of the Study:
- To investigate the temporal dynamics of immune regulation in advanced melanoma.
- To explore the potential for synchronizing chemotherapy administration with endogenous immune rhythms.
Main Methods:
- Analysis of immune cell subsets and cytokine profiles in patients with advanced/metastatic melanoma.
- Comparison of immune rhythmicity in melanoma patients versus healthy volunteers.
- Evaluation of clinical outcomes based on the timing of lymphodepleting chemotherapy (temozolomide) administration relative to individual immune dynamics.
Main Results:
- Healthy volunteers exhibit well-documented circadian immune variations.
- Advanced melanoma patients display infradian immune biorhythms characterized by chronic inflammation and Th2 dominance.
- Synchronized chemotherapy administration demonstrated improved clinical outcomes compared to conventional random delivery.
Conclusions:
- Immune regulation in advanced melanoma is characterized by infradian biorhythms distinct from healthy circadian patterns.
- Timing chemotherapy (temozolomide) to align with these endogenous immune rhythms can enhance treatment efficacy.
- Personalized, chronomodulated chemotherapy represents a promising strategy for managing advanced/metastatic melanoma.
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