Role of aryl hydrocarbon receptor in central nervous system tumors: Biological and therapeutic implications (Review)

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Abstract

Aryl hydrocarbon receptor (AHR) is a ligand- activated transcription factor, whose canonical pathway mainly regulates the genes involved in xenobiotic metabolism. However, it can also regulate several responses in a non- canonical manner, such as proliferation, differentiation, cell death and cell adhesion. AhR plays an important role in central nervous system tumors, as it can regulate several cellular responses via different pathways. The polymorphisms of the AHR gene have been associated with the development of gliomas. In addition, the metabolism of tumor cells promotes tumor growth, particularly in tryptophan synthesis, where some metabolites, such as kynurenine, can activate the AhR pathway, triggering cell proliferation in astrocytomas, medul- loblastomas and glioblastomas. Furthermore, as part of the changes in neuroblastomas, AHR is able to downregulate the expression of proto-oncogene c-Myc, induce differentia- tion in tumor cells, and cause cell cycle arrest and apoptosis. Collectively, these data suggested that the modulation of the AhR pathway may downregulate tumor growth, providing a novel strategy for applications for the treatment of certain tumors through the control of the AhR pathway.

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CITATION STYLE

APA

Zaragoza-Ojeda, M., Apatiga-Vega, E., & Arenas-Huertero, F. (2021, June 1). Role of aryl hydrocarbon receptor in central nervous system tumors: Biological and therapeutic implications (Review). Oncology Letters. Spandidos Publications. https://doi.org/10.3892/ol.2021.12721

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