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Published on: May 18, 2018
Metabolic Plasticity in Melanoma Progression and Response to Oncogene Targeted Therapies
Arwa Alkaraki1,2, Grant A McArthur1,2, Karen E Sheppard1,2,3
1Cancer Research Division, Peter MacCallum Cancer Centre, Melbourne, VIC 3000, Australia.
Abstract:
Resistance to therapy continues to be a barrier to curative treatments in melanoma. Recent insights from the clinic and experimental settings have highlighted a range of non-genetic adaptive mechanisms that contribute to therapy resistance and disease relapse, including transcriptional, post-transcriptional and metabolic reprogramming. A growing body of evidence highlights the inherent plasticity of melanoma metabolism, evidenced by reversible metabolome alterations and flexibility in fuel usage that occur during metastasis and response to anti-cancer therapies. Here, we discuss how the inherent metabolic plasticity of melanoma cells facilitates both disease progression and acquisition of anti-cancer therapy resistance. In particular, we discuss in detail the different metabolic changes that occur during the three major phases of the targeted therapy response-the early response, drug tolerance and acquired resistance. We also discuss how non-genetic programs, including transcription and translation, control this process. The prevalence and diverse array of these non-genetic resistance mechanisms poses a new challenge to the field that requires innovative strategies to monitor and counteract these adaptive processes in the quest to prevent therapy resistance.
Insights
Melanoma cells adapt to therapies through non-genetic changes in metabolism, hindering treatment. Understanding this metabolic plasticity is key to overcoming therapy resistance and preventing melanoma relapse.
Area of Science:
- Oncology
- Cancer Biology
- Metabolic Research
Background:
- Therapy resistance remains a significant obstacle in achieving curative treatments for melanoma.
- Non-genetic adaptive mechanisms, including metabolic reprogramming, play a crucial role in melanoma therapy resistance and relapse.
Purpose of the Study:
- To explore the role of melanoma's inherent metabolic plasticity in disease progression and therapy resistance.
- To detail metabolic alterations during targeted therapy response phases (early response, drug tolerance, acquired resistance).
- To discuss the influence of non-genetic programs like transcription and translation on these adaptive processes.
Main Methods:
- Review of current clinical and experimental findings on melanoma metabolism.
- Analysis of metabolic changes during different stages of targeted therapy response.
- Examination of non-genetic regulatory mechanisms (transcription, translation) in therapy resistance.
Main Results:
- Melanoma cells exhibit significant metabolic plasticity, altering their metabolism reversibly during metastasis and in response to anti-cancer therapies.
- Metabolic reprogramming is a key driver of both melanoma progression and the development of resistance to targeted therapies.
- Non-genetic adaptive mechanisms, controlled by transcriptional and translational programs, are prevalent and diverse.
Conclusions:
- Melanoma's metabolic plasticity is a critical factor enabling disease progression and the acquisition of therapy resistance.
- Innovative strategies are needed to monitor and counteract these adaptive, non-genetic resistance mechanisms to improve melanoma treatment outcomes.
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