PKM2 modulation in head and neck squamous cell carcinoma
Zitieren Sie bitte immer diese URN: urn:nbn:de:bvb:20-opus-284458
- The enzyme pyruvate kinase M2 (PKM2) plays a major role in the switch of tumor cells from oxidative phosphorylation to aerobic glycolysis, one of the hallmarks of cancer. Different allosteric inhibitors or activators and several posttranslational modifications regulate its activity. Head and neck squamous cell carcinoma (HNSCC) is a common disease with a high rate of recurrence. To find out more about PKM2 and its modulation in HNSCC, we examined a panel of HNSCC cells using real-time cell metabolic analysis and Western blotting with anThe enzyme pyruvate kinase M2 (PKM2) plays a major role in the switch of tumor cells from oxidative phosphorylation to aerobic glycolysis, one of the hallmarks of cancer. Different allosteric inhibitors or activators and several posttranslational modifications regulate its activity. Head and neck squamous cell carcinoma (HNSCC) is a common disease with a high rate of recurrence. To find out more about PKM2 and its modulation in HNSCC, we examined a panel of HNSCC cells using real-time cell metabolic analysis and Western blotting with an emphasis on phosphorylation variant Tyr105 and two reagents known to impair PKM2 activity. Our results show that in HNSCC, PKM2 is commonly phosphorylated at Tyrosine 105. Its levels depended on tyrosine kinase activity, emphasizing the importance of growth factors such as EGF (epidermal growth factor) on HNSCC metabolism. Furthermore, its correlation with the expression of CD44 indicates a role in cancer stemness. Cells generally reacted with higher glycolysis to PKM2 activator DASA-58 and lower glycolysis to PKM2 inhibitor Compound 3k, but some were more susceptible to activation and others to inhibition. Our findings emphasize the need to further investigate the role of PKM2 in HNSCC, as it could aid understanding and treatment of the disease.…
Autor(en): | Verena Boschert, Jonas Teusch, Urs D. A. Müller-RichterORCiD, Roman C. Brands, Stefan Hartmann |
---|---|
URN: | urn:nbn:de:bvb:20-opus-284458 |
Dokumentart: | Artikel / Aufsatz in einer Zeitschrift |
Institute der Universität: | Medizinische Fakultät / Klinik und Poliklinik für Mund-, Kiefer- und Plastische Gesichtschirurgie |
Medizinische Fakultät / Comprehensive Cancer Center Mainfranken | |
Sprache der Veröffentlichung: | Englisch |
Titel des übergeordneten Werkes / der Zeitschrift (Englisch): | International Journal of Molecular Sciences |
ISSN: | 1422-0067 |
Erscheinungsjahr: | 2022 |
Band / Jahrgang: | 23 |
Heft / Ausgabe: | 2 |
Aufsatznummer: | 775 |
Originalveröffentlichung / Quelle: | International Journal of Molecular Sciences (2022) 23:2, 775. https://doi.org/10.3390/ijms23020775 |
DOI: | https://doi.org/10.3390/ijms23020775 |
Allgemeine fachliche Zuordnung (DDC-Klassifikation): | 6 Technik, Medizin, angewandte Wissenschaften / 61 Medizin und Gesundheit / 617 Chirurgie und verwandte medizinische Fachrichtungen |
Freie Schlagwort(e): | AMPK; CD44; Compound 3k; DASA-58; HNSCC; PKM2; TXNIP; Warburg effect; cancer metabolism; glycolysis; head and neck cancer |
Datum der Freischaltung: | 30.01.2023 |
Datum der Erstveröffentlichung: | 11.01.2022 |
Open-Access-Publikationsfonds / Förderzeitraum 2022 | |
Lizenz (Deutsch): | CC BY: Creative-Commons-Lizenz: Namensnennung 4.0 International |