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Importance of genetic background of oxysterol signaling in cancer
P Holy1, A Kloudova1, P Soucek2
1Toxicogenomics Unit, National Institute of Public Health, Srobarova 48, 100 42, Prague 10, Czech Republic; Third Faculty of Medicine, Charles University, Ruska 87, 100 00, Prague 10, Czech Republic.
Abstract:
Oxysterols, oxygenated derivatives of cholesterol, are formed in the human body or ingested. Experimental evidence suggests that due to their diverse functions, e.g. modulating the activity of receptors such as liver X receptors, oxysterol-binding and metabolizing proteins, and several ATP binding cassette transporters, oxysterols may contribute to a number of human disorders including cancer. Genetic variability of oxysterol pathways represents another side of this process, affecting carcinogenesis and cancer progression. This review summarizes information about both the physiological role of oxysterol pathway genes and observed associations between their genetic variability and cancer incidence, progression, and therapy outcome. Besides candidate gene studies, results of genome-wide association studies are presented as well. The survey of available data shows some potential genetic biomarkers that, if clinically validated, may allow the stratification of individuals into genetically defined groups for prediction of individual cancer risk and subsequent screening strategies for early diagnosis.
Insights
Genetic variations in oxysterol pathways influence cancer development and progression. Understanding these genetic links may aid in predicting cancer risk and improving early detection strategies.
Area of Science:
- Biochemistry
- Genetics
- Oncology
Background:
- Oxysterols, cholesterol derivatives, play diverse physiological roles.
- They modulate key cellular pathways, including those involving liver X receptors and ATP binding cassette transporters.
- Oxysterols are implicated in the development of various human disorders, notably cancer.
Purpose of the Study:
- To review the physiological roles of oxysterol pathway genes.
- To summarize the associations between genetic variability in these pathways and cancer.
- To explore the implications for cancer incidence, progression, and treatment outcomes.
Main Methods:
- Literature review of candidate gene studies.
- Analysis of genome-wide association study (GWAS) results.
- Synthesis of existing experimental and genetic data.
Main Results:
- Oxysterol pathway genes have significant physiological functions.
- Genetic variability in these pathways is linked to cancer incidence and progression.
- Certain genetic variations may impact cancer therapy outcomes.
Conclusions:
- Genetic variability in oxysterol pathways is a crucial factor in carcinogenesis.
- Potential genetic biomarkers for cancer risk prediction and personalized screening strategies have been identified.
- Clinical validation of these biomarkers could revolutionize cancer risk stratification and early diagnosis.
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