منابع مشابه
Pleiotropic effects of HIF-1 blockade on tumor radiosensitivity.
We have previously shown that radiation increases HIF-1 activity in tumors, causing significant radioprotection of the tumor vasculature. The impact that HIF-1 activation has on overall tumor radiosensitivity, however, is unknown. We reveal here that HIF-1 plays an important role in determining tumor radioresponsiveness through regulating four distinct processes. By promoting ATP metabolism, pr...
متن کامل1(hypoxia-inducible factor-1, HIF-1) AMPK HIF-1 AMPK AMPK HIF-1 AMPK HIF-1 HIF-1 AMPK HIF-1 AMPK
The AMP-activated protein kinase is found in all eukaryotic cells. Once activated, the kinase switches on ATP-producing catabolic pathways and switches off ATP-consuming processes,both via direct phosphorylation of downstream targets, and thus is called a cellular energy regulator . A variety of novel downstream target proteins have been discovered recently, which provide new insight into eluci...
متن کاملTumour glycolysis: the many faces of HIF.
We present a model for tumour metabolism that incorporates both microenvironmental (extracellular) and oncogenic (intracellular) influences. We explore the effects of the interaction between the hypoxic microenvironment and intracellular signalling on the glycolytic response of tumour tissue, finding that the glycolytic state is dependent on a delicately balanced interplay between the cellular ...
متن کاملHypoxia Inducible Factor-1α (HIF-1 α) and its Role in Tumour Progression to Malignancy
Hypoxia is a condition in which an area of the body or a tissue is deprived of sufficient supply of oxygen. The lack of nutrients in a hypoxic tissue generally causes apoptosis but some cells are able to adapt to this hypoxic environment and resist apoptosis. This adaptation occurs as a result of gene activation. Hypoxia is a characteristic feature of many cancers and is the stimulus for overex...
متن کاملCancer cells that survive radiation therapy acquire HIF-1 activity and translocate towards tumour blood vessels
Tumour recurrence frequently occurs after radiotherapy, but the characteristics, intratumoural localization and post-irradiation behaviour of radioresistant cancer cells remain largely unknown. Here we develop a sophisticated strategy to track the post-irradiation fate of the cells, which exist in perinecrotic regions at the time of radiation. Although the perinecrotic tumour cells are original...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: British Journal of Cancer
سال: 2006
ISSN: 0007-0920,1532-1827
DOI: 10.1038/sj.bjc.6603201