RT Journal Article
SR Electronic
T1 Effect of Hypoxia on Proliferation and the Expression of the Genes HIF-1α and JMJD1A in Head and Neck Squamous Cell Carcinoma Cell Lines
JF Anticancer Research
JO Anticancer Res
FD International Institute of Anticancer Research
SP 113
OP 122
DO 10.21873/anticanres.14756
VO 41
IS 1
A1 CHRISTIAN WILHELM
A1 STEPHAN HACKENBERG
A1 MAXIMILIAN BREGENZER
A1 TILL MEYER
A1 THOMAS GEHRKE
A1 NORBERT KLEINSASSER
A1 RUDOLF HAGEN
A1 AGMAL SCHERZAD
YR 2021
UL http://ar.iiarjournals.org/content/41/1/113.abstract
AB Background/Aim: The aim of the study was to investigate the effects of hypoxia on proliferation and the expression of HIF-1α (hypoxia-inducible factor 1 alpha) and JMJD1A (jumonji domain 1A) in head and neck squamous cell carcinoma (HNSCC). Materials and Methods: FaDu and HLaC78 cells were incubated for 1-24 h in hypoxia and normoxia. Cell proliferation, mRNA and protein levels of HIF-1α and JMJD1A were quantified by counting, PCR and western blot. Results: Hypoxia led to a constant decrease in cell proliferation. Short hypoxia resulted in an increase in HIF-1α mRNA levels. This effect was reversed after longer incubation. The western blot for HIF-1α showed a maximum accumulation after 3-6 h of hypoxia. In FaDu cells, the concentration of JMJD1A reached a peak after 6 h and decreased thereafter, whereas in HLaC78 cells, it presented a second peak after 48 h. Conclusion: The transcription factors HIF-1α and JMJDA1 were confirmed as relevant hypoxia-dependent regulators of carcinogenesis in HNSCC.