The Role of Aryl Hydrocarbon Receptor (AhR) in Brain Tumors
نویسندگان
چکیده
منابع مشابه
Wistar Han Aryl Hydrocarbon Receptor (AhR)
Unknown, but the effects seem limited. Rats homozygous for the mutant allele have a dramatically increased LD50 for 2,3,7,8-tetrachlorodibenzo-p-dioxin (TCDD) and PCDD (penta-), but not HCDD (hexa-). Overall, the tissue distribution and excretion of TCDD in rats homozygous for the AhR mutation is similar to that of the Long-Evans rat, which was used as a dioxin-sensitive control strain. Reprodu...
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The aryl hydrocarbon receptor (AHR) is believed to mediate the toxic effects of 2,3,7,8-tetrachlorodibenzo-p-dioxin (TCDD), polychlorinated biphenyls, and polycyclic aromatic hydrocarbons. AHR is a member of the Per, ARNT, Sim/basic-helix-loop-helix superfamily of ligand-activated transcription factors that also harbors the transcription factors involved in the hypoxia response, development of ...
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Activation of the aryl hydrocarbon receptor (AHR) by 2,3,7,8-tetrachlorodibenzo-p-dioxin causes altered gene expression and toxicity. The AHR repressor (AHRR) inhibits AHR signaling through a proposed mechanism involving competition with AHR for dimerization with AHR nuclear translocator (ARNT) and binding to AHR-responsive enhancer elements (AHREs). We sought to delineate the relative roles of...
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Pituitary adenomas (PA) are common endocrine neoplasia, generally presenting as sporadic diseases, with a multifactorial pathogenesis including somatic mutational events in cancer-related genes. However, genetic predisposition can currently be recognized in >5% of affected patients, mostly involving the Multiple Endocrine Neoplasia type 1 ( MEN1 ) gene and the more recently identi fi ed Aryl hy...
متن کاملInteractions between aryl hydrocarbon receptor (AhR) and hypoxia signaling pathways.
Most if not all of the toxic responses of 2,3,7,8-tetrachlorodibenzo-p-dioxin (TCDD) are mediated through the AhR, which requires ARNT to regulate gene expression. ARNT is also required by HIF-1alpha to enhance the expression of various genes in response to hypoxia. Since both the AhR and hypoxia transcriptional pathways require ARNT, some of the effects of TCDD and similar types of ligands cou...
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ژورنال
عنوان ژورنال: International Journal of Molecular Sciences
سال: 2020
ISSN: 1422-0067
DOI: 10.3390/ijms21082863