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A Robust Discovery Platform for the Identification of Novel Mediators of Melanoma Metastasis
Published on: March 8, 2022
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Specific Urinary Metabolites in Malignant Melanoma
Marcela Valko-Rokytovská1, Beáta Hubková2, Anna Birková3
1Department of Chemistry, Biochemistry and Biophysics, University of Veterinary Medicine and Pharmacy in Košice, Komenského 73, 041 81 Košice, Slovakia. marcela.valko.rokytovska@gmail.com.
Medicina (Kaunas, Lithuania)
|May 19, 2019
Summary
Urine analysis using high-performance liquid chromatography (HPLC) reveals elevated levels of specific metabolites in melanoma patients. These findings suggest HPLC detection of L-tyrosine and tryptophan metabolites could aid in melanoma diagnostics and treatment strategies.
Area of Science:
- Biochemistry
- Oncology
- Analytical Chemistry
Background:
- Melanin, crucial for melanoma cell behavior, is synthesized from L-tyrosine and tryptophan.
- Melanogenesis involves metabolites readily detectable in urine via chromatography.
- Urine analysis offers a non-invasive approach to study melanoma-related metabolic changes.
Purpose of the Study:
- To investigate the utility of urine metabolite profiling in diagnosing malignant melanoma.
- To identify specific L-tyrosine and tryptophan metabolites associated with melanoma.
- To explore the potential of these metabolites as biomarkers for melanoma diagnosis and therapy.
Main Methods:
- Urine samples from 133 individuals (82 melanoma patients, 51 controls) were analyzed.
- Reversed-phase high-performance liquid chromatography (RP-HPLC) was employed for metabolite detection.
- Histological confirmation was used for all malignant melanoma diagnoses.
Main Results:
- Melanoma patients exhibited increased levels of 5,6-dihydroxyindole-2-carboxylic acid, vanilmandelic acid, homovanilic acid, tryptophan, 5-hydroxyindole-3-acetic acid, and indoxyl sulphate compared to controls.
- Significant elevations in indoxyl sulphate, homovanilic acid, and tryptophan were observed even in early-stage (Stage 0) melanoma.
- Specific concentration ranges for these metabolites in Stage 0 patients versus controls were documented.
Conclusions:
- RP-HPLC detection of L-tyrosine and tryptophan metabolites in urine shows promise for melanoma diagnostics.
- Metabolite profiling may offer a valuable tool for both diagnosing and developing therapeutic strategies for melanoma.
- Urinary metabolite analysis represents a significant advancement in the field of melanoma research.
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