Key Points
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Hypoxia is a reduction in the normal level of tissue oxygen tension, and occurs during acute and chronic vascular disease, pulmonary disease and cancer. It induces a transcription programme that promotes an aggressive tumour phenotype.
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Hypoxia is associated with resistance to radiation therapy and chemotherapy, but is also associated with poor outcome regardless of treatment modality, indicating that it might be an important therapeutic target.
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Hypoxia-inducible factor-1α (HIF-1α) is a key transcription factor that is induced by hypoxia and regulated by a proline hydroxylase.
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Pathways that are regulated by hypoxia include angiogenesis, glycolysis, growth-factor signalling, immortalization, genetic instability, tissue invasion and metastasis, apoptosis and pH regulation.
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Most of the hypoxia-induced pathways promote tumour growth, but apoptosis is also induced by hypoxia. The balance of these pathways might be critical for the effects of hypoxia on tumour growth.
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Drugs that inhibit HIF-1α expression antagonize HIF-1α interaction with CBP/p300 or block downstream function of genes such as vascular endothelial growth factor and cyclooxygenase-2 have potentially important roles in tumour therapy. Hypoxia can also be used to activate therapeutic gene delivery to specific areas of tissue.
Abstract
Cells undergo a variety of biological responses when placed in hypoxic conditions, including activation of signalling pathways that regulate proliferation, angiogenesis and death. Cancer cells have adapted these pathways, allowing tumours to survive and even grow under hypoxic conditions, and tumour hypoxia is associated with poor prognosis and resistance to radiation therapy. Many elements of the hypoxia-response pathway are therefore good candidates for therapeutic targeting.
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References
Thomlinson, R. & Gray, L. The histological structure of some human lung cancers and the possible implications for radiotherapy. Br. J. Canc. 9, 539â549 (1955).
Brown, J. M. & Giaccia, A. J. The unique physiology of solid tumors: opportunities (and problems) for cancer therapy. Cancer Res. 58, 1408â1416 (1998).
Prabhakar, N. R. Oxygen sensing during intermittent hypoxia: cellular and molecular mechanisms. J. Appl. Physiol. 90, 1986â1994 (2001).
Wouters, B. G. & Brown, J. M. Cells at intermediate oxygen levels can be more important than the hypoxic fraction in determining tumor response to fractionated radiotherapy. Radiat. Res. 147, 541â550 (1997).
Hockel, M. & Vaupel, P. Tumor hypoxia: definitions and current clinical, biologic, and molecular aspects. J. Natl Cancer Inst. 93, 266â276 (2001).
Hockel, M., Schlenger, K., Hockel, S. & Vaupel, P. Hypoxic cervical cancers with low apoptotic index are highly aggressive. Cancer Res. 59, 4525â4528 (1999).
Dang, C. V. & Semenza, G. L. Oncogenic alterations of metabolism. Trends Biochem. Sci. 24, 68â72 (1999).
Wang, G. L., Jiang, B. H., Rue, E. A. & Semenza, G. L. Hypoxia-inducible factor 1 is a basic-helix-loop-helix-PAS heterodimer regulated by cellular O2 tension. Proc. Natl Acad. Sci. USA 92, 5510â5514 (1995)
Carrero, P. et al. Redox-regulated recruitment of the transcriptional coactivators CREB-binding protein and SRC-1 to hypoxia-inducible factor-1α. Mol. Cell Biol. 20, 402â415 (2000).
Lando, D., Pongratz, I., Poellingers, L. & Whitelaw, M. L. A redox mechanism controls differential DNA binding activities of hypoxia-inducible factor (HIF)-1α and the HIF-like factor. J. Biol. Chem. 275, 4618â4627 (2000).
Cockman, M. E. et al. Hypoxia inducible factor-α binding and ubiquitylation by the von HippelâLindau tumor suppressor protein. J. Biol. Chem. 275, 25733â25741 (2000).
Ohh, M. et al. Ubiquitination of hypoxia-inducible factor requires direct binding to the β-domain of the von HippelâLindau protein. Nature Cell Biol. 2, 423â427 (2000).
Kamura, T. et al. Activation of HIF-1α ubiquitination by a reconstituted von HippelâLindau (VHL) tumor suppressor complex. Proc. Natl Acad. Sci. USA 97, 10430â10435 (2000).
Tanimoto, K., Makino, Y., Pereira, T. & Poellinger, L. Mechanism of regulation of the hypoxia-inducible factor-1α by the von HippelâLindau tumor suppressor protein. EMBO J. 19, 4298â4309 (2000).References 11â14 report that VHL protein modifies HIF-1α by ubiquitylation.
Maxwell, P. H. et al. The tumour suppressor protein VHL targets hypoxia-inducible factors for oxygen-dependent proteolysis. Nature 399, 271â275 (1999).The first to show that mutations in VHL caused upregulation of HIF-1α, coupling a tumour-suppressor pathway to HIF-1 signalling.
Stebbins, C. E., Kaelin, W. G. Jr & Pavletich, N. P. Structure of the VHLâelongin-Câelongin-B complex: implications for VHL tumor suppressor function. Science 284, 455â461 (1999).
Jaakkola, P. et al. Targeting of HIF-α to the von HippelâLindau ubiquitylation complex by O2-regulated prolyl hydroxylation. Science 292, 468â472 (2001).
Ivan, M. et al. HIF-α targeted for VHL-mediated destruction by proline hydroxylation: implications for O2 sensing. Science 292, 464â468 (2001).References 17 and 18 were the first descriptions of an enzyme that covalently modifies HIF-1α in an oxygen-dependent manner.
Masson, N., Willam, C., Maxwell, P. H., Pugh, C. W. & Ratcliffe, P. J. Independent function of two destruction domains in hypoxia-inducible factor-α chains activated by prolyl hydroxylation. EMBO J. 20, 5197â5206 (2001).
Chandel, N. S. et al. Reactive oxygen species generated at mitochondrial complex III stabilize hypoxia-inducible factor-1α during hypoxia: a mechanism of O2 sensing. J. Biol. Chem. 275, 25130â25138 (2000).
Srinivas, V. et al. Oxygen sensing and HIF-1 activation does not require an active mitochondrial respiratory chain electron-transfer pathway. J. Biol. Chem. 276, 21995â21998 (2001).
Vaux, E. C., Metzen, E., Yeates, K. M. & Ratcliffe, P. J. Regulation of hypoxia-inducible factor is preserved in the absence of a functioning mitochondrial respiratory chain. Blood 98, 296â302 (2001).
Epstein, A. C. et al. C. elegans EGL-9 and mammalian homologs define a family of dioxygenases that regulate HIF by prolyl hydroxylation. Cell 107, 43â54 (2001).
Bruick, R. K. & McKnight, S. L. A conserved family of prolyl-4-hydroxylases that modify HIF. Science 294, 1337â1340 (2001).References 23 and 24 describe the characterization of three enzymes that act as oxygen sensors, using HIF-1α as a substrate and requiring oxygen.
Ryan, H. E., Lo, J. & Johnson, R. S. HIF-1α is required for solid tumor formation and embryonic vascularization. EMBO J. 17, 3005â3015 (1998).This study, along with references 28 and 44 , shows that HIF-1α has a significant role in tumour growth in vivo.
Tian, H., Hammer, R. E., Matsumoto, A. M., Russell, D. W. & McKnight, S. L. The hypoxia-responsive transcription factor EPAS1 is essential for catecholamine homeostasis and protection against heart failure during embryonic development. Genes Dev. 12, 3320â3324 (1998).
Peng, J., Zhang, L., Drysdale, L. & Fong, G. H. The transcription factor EPAS-1/hypoxia-inducible factor-2α plays an important role in vascular remodeling. Proc. Natl Acad. Sci. USA 97, 8386â8391 (2000).
Maxwell, P. H. et al. Hypoxia-inducible factor-1 modulates gene expression in solid tumors and influences both angiogenesis and tumor growth. Proc. Natl Acad. Sci. USA 94, 8104â8109 (1997).
Talks, K. L. et al. Expression and distribution of the hypoxia-inducible factors HIF-1α and HIF-2α in normal human tissues, cancers, and tumor-associated macrophages. Am. J. Pathol. 157, 411â421 (2000).The authors used a monoclonal antibody against HIF-1α to examine its expression and distribution in a variety of solid tumours. They observed nuclear localization of HIF-1α and -2α in subsets of the tumour cells, and reported that HIF-2α was also strongly expressed by subsets of tumour-associated macrophages.
Zhong, H. et al. Overexpression of hypoxia-inducible factor-1α in common human cancers and their metastases. Cancer Res. 59, 5830â5835 (1999).HIF-1α expression was analysed by immuno-histochemistry in 179 tumour specimens, and found to be overexpressed in a variety of tumour types. HIF-1α expression was also correlated with aberrant p53 accumulation and cell proliferation. These results provided the first clinical data indicating that HIF-1α was important for human cancer progression.
Elson, D. A., Ryan, H. E., Snow, J. W., Johnson, R. & Arbeit, J. M. Coordinate up-regulation of hypoxia inducible factor (HIF)-1α and HIF-1 target genes during multi-stage epidermal carcinogenesis and wound healing. Cancer Res. 60, 6189â6195 (2000).
Krieg, M. et al. Up-regulation of hypoxia-inducible factors HIF-1α and HIF-2α under normoxic conditions in renal carcinoma cells by von HippelâLindau tumor suppressor gene loss of function. Oncogene 19, 5435â5443 (2000).
Hanahan, D. & Weinberg, R. A. The hallmarks of cancer. Cell 100, 57â70 (2000).
Denko, N. et al. Epigenetic regulation of gene expression in cervical cancer cells by the tumor microenvironment. Clin. Cancer Res. 6, 480â487 (2000).
Koong, A. C. et al. Candidate genes for the hypoxic tumor phenotype. Cancer Res. 60, 883â887 (2000).
Wykoff, C. C., Pugh, C. W., Maxwell, P. H., Harris, A. L. & Ratcliffe, P. J. Identification of novel hypoxia dependent and independent target genes of the von HippelâLindau (VHL) tumour suppressor by mRNA differential expression profiling. Oncogene 19, 6297â6305 (2000).
Lal, A. et al. Transcriptional response to hypoxia in human tumors. J. Natl Cancer Inst. 93, 1337â1343 (2001).References 35â37 described a large number of hypoxia-regulated genes, among which there are many proangiogenic pathways.
Berra, E. et al. Signaling angiogenesis via p42/p44 MAP kinase and hypoxia. Biochem. Pharmacol. 60, 1171â1178 (2000).
Conrad, P. W., Beitner-Johnson, D. & Millhorn, D. E. EPAS1 trans-activation during hypoxia requires p42/p44 MAPK. J. Biol. Chem. 274, 33709â33713 (1999).
Chen, E. Y., Mazure, N. M., Cooper, J. A. & Giaccia, A. J. Hypoxia activates a platelet-derived growth factor receptor/phosphatidylinositol 3-kinase/AKT pathway that results in glycogen synthase kinase-3 inactivation. Cancer Res. 61, 2429â2433 (2001).
Zundel, W. et al. Loss of PTEN facilitates HIF-1-mediated gene expression. Genes Dev. 14, 391â396 (2000).One of several papers showing that the PI3K pathway regulates HIF through a hypoxia-independent pathway.
Ryan, H. E. et al. Hypoxia-inducible factor-1α is a positive factor in solid tumor growth. Cancer Res. 60, 4010â4015 (2000).
Mazurek, S., Boschek, C. B. & Eigenbrodt, E. The role of phosphometabolites in cell proliferation, energy metabolism, and tumor therapy. J. Bioenerg. Biomembr. 29, 315â330 (1997).
Carmeliet, P. et al. Role of HIF-1α in hypoxia-mediated apoptosis, cell proliferation and tumour angiogenesis. Nature 394, 485â490 (1998).
Yu, J. L. et al. Heterogeneous vascular dependence of tumor cell populations. Am. J. Pathol. 158, 1325â1334 (2001).
Kung, A. L., Wang, S., Klco, J. M., Kaelin, W. G. & Livingston, D. M. Suppression of tumor growth through disruption of hypoxia-inducible transcription. Nature Med. 6, 1335â1340 (2000).Revealed that blockade of HIF-1 signalling by a peptide can completely inhibit tumour growth in vivo.
de Fraipont, F., Nicholson, A. C., Feige, J. J. & Van Meir, E. G. Thrombospondins and tumor angiogenesis. Trends Mol. Med. 7, 401â407 (2001).
Seagroves, T. N. et al. Transcription factor HIF-1 is a necessary mediator of the pasteur effect in mammalian cells. Mol. Cell Biol. 21, 3436â3444 (2001).
Chen, C. H., Pore, N., Behrooz, A., Ismail, B.-F. & Maity, A. Regulation of GLUT1 mRNA by hypoxia-inducible factor-1: interaction between H-ras and hypoxia. J. Biol. Chem. 276, 9519â9525 (2001).
Seimiya, H. et al. Hypoxia up-regulates telomerase activity via mitogen-activated protein kinase signaling in human solid tumor cells. Biochem. Biophys. Res. Commun. 260, 365â370 (1999).
Coquelle, A., Toledo, F., Stern, S., Bieth, A. & Debatisse, M. A new role for hypoxia in tumor progression: induction of fragile site triggering genomic rearrangements and formation of complex DMs and HSRs. Mol. Cell 2, 259â265 (1998).
Yuan, J., Narayanan, L., Rockwell, S. & Glazer, P. M. Diminished DNA repair and elevated mutagenesis in mammalian cells exposed to hypoxia and low pH. Cancer Res. 60, 4372â4376 (2000).
Kim, M. S. et al. Histone deacetylases induce angiogenesis by negative regulation of tumor suppressor genes. Nature Med. 7, 437â443 (2001).
Bruick, R. K. Expression of the gene encoding the proapoptotic Nip3 protein is induced by hypoxia. Proc. Natl Acad. Sci. USA 97, 9082â9087 (2000).
Vande Velde, C. et al. BNIP3 and genetic control of necrosis-like cell death through the mitochondrial permeability transition pore. Mol. Cell Biol. 20, 5454â5468 (2000).
Sowter, H. M., Ratcliffe, P. J., Watson, P., Greenberg, A. H. & Harris, A. L. HIF-1-dependent regulation of hypoxic induction of the cell death factors BNIP3 and NIX in human tumors. Cancer Res. 61, 6669â6673 (2001).
Suzuki, H., Tomida, A. & Tsuruo, T. Dephosphorylated hypoxia-inducible factor-1α as a mediator of p53-dependent apoptosis during hypoxia. Oncogene 20, 5779â5788 (2001).
Graeber, T. G. et al. Hypoxia-mediated selection of cells with diminished apoptotic potential in solid tumors. Nature 379, 88â91 (1996).Shows that hypoxia selects for a more aggressive tumour phenotype in vivo.
Koumenis, C. et al. Regulation of p53 by hypoxia: dissociation of transcriptional repression and apoptosis from p53-dependent transactivation. Mol. Cell Biol. 21, 1297â1310 (2001).
Soengas, M. S. et al. Apaf-1 and caspase-9 in p53-dependent apoptosis and tumor inhibition. Science 284, 156â159 (1999).Defines the key pathways of hypoxia-induced apoptosis.
An, W. G. et al. Stabilization of wild-type p53 by hypoxia-inducible factor-1α. Nature 392, 405â408 (1998).
Ravi, R. et al. Regulation of tumor angiogenesis by p53-induced degradation of hypoxia-inducible factor-1α. Genes Dev. 14, 34â44 (2000).
Dong, Z. et al. Up-regulation of apoptosis inhibitory protein IAP-2 by hypoxia. HIF-1-independent mechanisms. J. Biol. Chem. 276, 18702â18709 (2001).Reports non-HIF-1 pathways that are important for cell survival that is regulated by hypoxia.
Ivanov, S. V. et al. Down-regulation of transmembrane carbonic anhydrases in renal cell carcinoma cell lines by wild-type von HippelâLindau transgenes. Proc. Natl Acad. Sci. USA 95, 12596â12601 (1998).
Wykoff, C. C. et al. Hypoxia-inducible expression of tumor-associated carbonic anhydrases. Cancer Res. 60, 7075â7083 (2000).Shows that acid pH in tumours might be determined by novel hypoxia-regulated pathways.
Loncaster, J. A. et al. Carbonic anhydrase (CA IX) expression, a potential new intrinsic marker of hypoxia: correlations with tumor oxygen measurements and prognosis in locally advanced carcinoma of the cervix. Cancer Res. 61, 6394â6399 (2001).
Chia, S. K. et al. Prognostic significance of a novel hypoxia-regulated marker, carbonic anhydrase IX, in invasive breast carcinoma. J. Clin. Oncol. 19, 3660â3668 (2001).
Yamagata, M., Hasuda, K., Stamato, T. & Tannock, I. F. The contribution of lactic acid to acidification of tumours: studies of variant cells lacking lactate dehydrogenase. Br. J. Cancer 77, 1726â1731 (1998).
Gardner, L. B. et al. Hypoxia inhibits G1/S transition through regulation of p27 expression. J. Biol. Chem. 276, 7919â7926 (2001).
Green, S. L., Freiberg, R. A. & Giaccia, A. J. p21(Cip1) and p27(Kip1) regulate cell cycle reentry after hypoxic stress but are not necessary for hypoxia-induced arrest. Mol. Cell Biol. 21, 1196â1206 (2001).
Raleigh, J. A. et al. A clinical study of hypoxia and metallothionein protein expression in squamous cell carcinomas. Clin. Cancer Res. 6, 855â862 (2000).
Taylor, C. T., Furuta, G. T., Synnestvedt, K. & Colgan, S. P. Phosphorylation-dependent targeting of cAMP response element binding protein to the ubiquitin/proteasome pathway in hypoxia. Proc. Natl Acad. Sci. USA 97, 12091â12096 (2000).
Schmedtje, J. F. Jr, Ji, Y. S., Liu, W. L., DuBois, R. N. & Runge, M. S. Hypoxia induces cyclooxygenase-2 via the NF-κB p65 transcription factor in human vascular endothelial cells. J. Biol. Chem. 272, 601â608 (1997).
Yan, S. F. et al. Hypoxia-associated induction of early growth response-1 gene expression. J. Biol. Chem. 274, 15030â15040 (1999).
Yan, S. F., Pinsky, D. J. & Stern, D. M. A pathway leading to hypoxia-induced vascular fibrin deposition. Semin. Thromb. Hemost. 26, 479â483 (2000).
Murphy, B. J. et al. Activation of metallothionein gene expression by hypoxia involves metal response elements and metal transcription factor-1. Cancer Res. 59, 1315â1322 (1999).
Carmeliet, P. et al. Synergism between vascular endothelial growth factor and placental growth factor contributes to angiogenesis and plasma extravasation in pathological conditions. Nature Med. 7, 575â583 (2001).
Littlewood, T. J. The impact of hemoglobin levels on treatment outcomes in patients with cancer. Semin. Oncol. 28, 49â53 (2001).
Littlewood, T. J., Bajetta, E., Nortier, J. W., Vercammen, E. & Rapoport, B. Effects of epoetin alfa on hematologic parameters and quality of life in cancer patients receiving nonplatinum chemotherapy: results of a randomized, double-blind, placebo-controlled trial. J. Clin. Oncol. 19, 2865â2874 (2001).
Bernier, J. et al. ARCON: accelerated radiotherapy with carbogen and nicotinamide in head and neck squamous cell carcinomas. The experience of the Co-operative group of radiotherapy of the european organization for research and treatment of cancer (EORTC). Radiother. Oncol. 55, 111â119 (2000).
Cohen, J.-E. et al. The farnesyltransferase inhibitor L744,832 reduces hypoxia in tumors expressing activated H-ras. Cancer Res. 61, 2289â2293 (2001).
Wardman, P. Electron transfer and oxidative stress as key factors in the design of drugs selectively active in hypoxia. Curr. Med. Chem. 8, 739â761 (2001).
von Pawel, J. et al. Tirapazamine plus cisplatin versus cisplatin in advanced non-small-cell lung cancer: a report of the international CATAPULT I study group. Cisplatin and tirapazamine in subjects with advanced previously untreated non-small-cell lung tumors. J. Clin. Oncol. 18, 1351â1359 (2000).
Lewis, J. S. & Welch, M. J. PET imaging of hypoxia. J. Nucl. Med. Allied Sci. 45, 183â188 (2001).
Sun, X. et al. Gene transfer of antisense hypoxia inducible factor-1α enhances the therapeutic efficacy of cancer immunotherapy. Gene Ther. 8, 638â645 (2001).Describes how the synergy between anti-HIF-1 therapy and immunotherapy might be an important model for future clinical trials.
Bhattacharya, S. et al. Functional role of p35srj, a novel p300/CBP binding protein, during transactivation by HIF-1. Genes Dev. 13, 64â75 (1999).
Gleadle, J. M., Ebert, B. L. & Ratcliffe, P. J. Diphenylene iodonium inhibits the induction of erythropoietin and other mammalian genes by hypoxia. Implications for the mechanism of oxygen sensing. Eur. J. Biochem. 234, 92â99 (1995).
Dachs, G. U. et al. Targeting gene expression to hypoxic tumor cells. Nature Med. 3, 515â520 (1997).Shows that the HIF-1 pathway can be manipulated to activate therapeutic genes at specific oxygen tensions in vivo.
Lemmon, M. J. et al. Anaerobic bacteria as a gene delivery system that is controlled by the tumor microenvironment. Gene Ther. 4, 791â796 (1997).
Dang, L. H., Bettegowda, C., Huso, D. L., Kinzler, K. W. & Vogelstein, B. Combination bacteriolytic therapy for the treatment of experimental tumours. Proc. Natl Acad. Sci. USA 2001 Nov 27; [epub ahead of print].
Griffiths, L. et al. The macrophage: a novel system to deliver gene therapy to pathological hypoxia. Gene Ther. 7, 255â262 (2000).
Koshikawa, N., Takenaga, K., Tagawa, M. & Sakiyama, S. Therapeutic efficacy of the suicide gene driven by the promoter of vascular endothelial growth factor gene against hypoxic tumor cells. Cancer Res. 60, 2936â2941 (2000).
Pioli, P. A. & Rigby, W. F. The von HippelâLindau protein interacts with heteronuclear ribonucleoprotein a2 and regulates its expression. J. Biol. Chem. 276, 40346â40352 (2001).Discusses the role of RNA stabilization in hypoxia gene regulation, particularly the direct role of VHL.
Ohh, M. The von HippelâLindau tumor suppressor protein is required for proper assembly of an extracellular fibronectin matrix. Mol. Cell 7, 959â968 (1998).
Okuda, H. et al. Direct interaction of the β-domain of VHL tumor suppressor protein with the regulatory domain of atypical PKC isotypes. Biochem. Biophys. Res. Commun. 263, 491â497 (1999).
Kamura, T., Conrad, M. N., Yan, Q., Conaway, R. C. & Conaway, J. W. The Rbx1 subunit of SCF and VHL E3 ubiquitin ligase activates Rub1 modification of cullins Cdc53 and Cul2. Genes Dev. 13, 2928â2933 (1999).
Yamashita, K., Discher, D. J., Hu, J., Bishopric, N. H. & Webster, K. A. Molecular regulation of the endothelin-1 gene by hypoxia. Contributions of hypoxia-inducible factor-1, activator protein-1, GATA-2, and p300/CBP. J. Biol. Chem. 276, 12645â12653 (2001).
Maltepe, E., Keith, B., Arsham, A. M., Brorson, J. R. & Simon, M. C. The role of ARNT2 in tumor angiogenesis and the neural response to hypoxia. Biochem. Biophys. Res. Commun. 273, 231â238 (2000).
Hogenesch, J. B., Gu, Y. Z., Jain, S. & Bradfield, C. A. The basic helixâloopâhelixâPAS orphan MOP3 forms transcriptionally active complexes with circadian and hypoxia factors. Proc. Natl Acad. Sci. USA 95, 5474â5479 (1998).
Thrash-Bingham, C. A. & Tartof, K. D. αHIF: a natural antisense transcript overexpressed in human renal cancer and during hypoxia. J. Natl Cancer Inst. 91, 143â151 (1999).
Levy, N. S., Chung, S., Furneaux, H. & Levy, A. P. Hypoxic stabilization of vascular endothelial growth factor mRNA by the RNA-binding protein HuR. J. Biol. Chem. 273, 6417â6423 (1998).
Levy, N. S., Goldberg, M. A. & Levy, A. P. Sequencing of the human vascular endothelial growth factor (VEGF) 3â² untranslated region (UTR): conservation of five hypoxia-inducible RNA-protein binding sites. Biochim. Biophys. Acta 1352, 167â173 (1997).
Palmer, L. A., Semenza, G. L., Stoler, M. H. & Johns, R. A. Hypoxia induces type II NOS gene expression in pulmonary artery endothelial cells via HIF-1. Am. J. Physiol. 274, L212âL219 (1998).
Zelzer, E. et al. Insulin induces transcription of target genes through the hypoxia-inducible factor HIF-1α/ARNT. EMBO J. 17, 5085â5094 (1998).
Richard, D. E., Berra, E. & Pouyssegur, J. Nonhypoxic pathway mediates the induction of hypoxia-inducible factor-1α in vascular smooth muscle cells. J. Biol. Chem. 275, 26765â26771 (2000).
Laughner, E., Taghavi, P., Chiles, K., Mahon, P. C. & Semenza, G. L. HER2 (neu) signaling increases the rate of hypoxia-inducible factor-1α (HIF-1α) synthesis: novel mechanism for HIF-1-mediated vascular endothelial growth factor expression. Mol. Cell Biol. 21, 3995â4004 (2001).
Sodhi, A. et al. The Kaposi's sarcoma-associated herpes virus G protein-coupled receptor up-regulates vascular endothelial growth factor expression and secretion through mitogen-activated protein kinase and p38 pathways acting on hypoxia-inducible factor-1α. Cancer Res. 60, 4873â4880 (2000).
Hirota, K. & Semenza, G. L. Rac1 activity is required for the activation of hypoxia-inducible factor-1. J. Biol. Chem. 276, 21166â21172 (2001).
Jiang, B. H., Agani, F., Passaniti, A. & Semenza, G. L. v-SRC induces expression of hypoxia-inducible factor-1 (HIF-1) and transcription of genes encoding vascular endothelial growth factor and enolase 1: involvement of HIF-1 in tumor progression. Cancer Res. 57, 5328â5335 (1997).
Aragones, J. et al. Evidence for the involvement of diacylglycerol kinase in the activation of hypoxia-inducible transcription factor-1 by low oxygen tension. J. Biol. Chem. 276, 10548â10555 (2001).
Lee, S. W. et al. Human hepatitis B virus X protein is a possible mediator of hypoxia-induced angiogenesis in hepatocarcinogenesis. Biochem. Biophys. Res. Commun. 268, 456â461 (2000).
Wang, G. L., Jiang, B. H. & Semenza, G. L. Effect of protein kinase and phosphatase inhibitors on expression of hypoxia-inducible factor-1. Biochem. Biophys. Res. Commun. 216, 669â675 (1995).
Blancher, C., Moore, J. W., Talks, K. L., Houlbrook, S. & Harris, A. L. Relationship of hypoxia-inducible factor (HIF)-1α and HIF-2α expression to vascular endothelial growth factor induction and hypoxia survival in human breast cancer cell lines. Cancer Res. 60, 7106â7113 (2000).
Hur, E., Chang, K. Y., Lee, E., Lee, S. K. & Park, H. Mitogen-activated protein kinase kinase inhibitor PD98059 blocks the transactivation but not the stabilization or DNA binding ability of hypoxia-inducible factor-1α. Mol. Pharmacol. 59, 1216â1224 (2001).
Zhong, H. et al. Modulation of hypoxia-inducible factor-1α expression by the epidermal growth factor/phosphatidylinositol 3-kinase/PTEN/AKT/FRAP pathway in human prostate cancer cells: implications for tumor angiogenesis and therapeutics. Cancer Res. 60, 1541â1545 (2000).Reports that oncogenic signalling pathways regulate HIF-1α, independently of hypoxia. Inhibitors of these pathways also block hypoxia-induced HIF-1 signalling.
Board, M., Colquhoun, A. & Newsholme, E. A. High Km glucose-phosphorylating (glucokinase) activities in a range of tumour cell lines and inhibition of rates of tumour growth by the specific enzyme inhibitor mannoheptulose. Cancer Res. 55, 3278â3285 (1995).
Schmaltz, C., Hardenbergh, P. H., Wells, A. & Fisher, D. E. Regulation of proliferation-survival decisions during tumor cell hypoxia. Mol. Cell. Biol. 18, 2845â2854 (1998).Shows that cell death in hypoxia might be mediated by low pH rather than low oxygen.
Acknowledgements
I thank I. Stratford and C. West for their helpful comments, and L. Richards for administrative assistance.
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DATABASES
epidermal growth factor receptor
glyceraldehyde-3-phosphate dehydrogenase
low-density lipoprotein receptor-related protein
metal-regulatory transcription factor-1
monocyte chemotactic protein-1
phosphoribosyl pyrophosphate synthetase
plasminogen activator inhibitor-1
platelet-derived growth factor
platelet-derived growth factor-B
spermidine N1-acetyl transferase
FURTHER INFORMATION
SRI web site on hypoxia in cancer
LINKS
Glossary
- ERYTHROPOIETIN
-
A renal hormone that is induced by anaemia and that activates haemoglobin synthesis by bone-marrow red-cell precursors.
- CEREBELLAR HAEMANGIOGBLASTOMAS
-
Non-malignant proliferations of vascular stromal cells in the central nervous system.
- THROMBOSPONDINS
-
A multigene family of extracellular proteins that inhibit angiogenesis through several mechanisms, including upregulation of TGF-β and decreasing the cellular response to VEGF.
- TELOMERASE
-
A ribonucleoprotein that maintains telomere length. Telomerase activity is repressed in most normal adult human somatic tissues, limiting replicative capacity. Reactivation of telomerase is believed to be a necessary event for the sustained growth of most human tumours.
- FRAGILE SITE
-
A site in a chromosome that is susceptible to chromosome breakage and fusion with other chromosomes.
- CARBONIC ANHYDRASES
-
Enzymes that convert carbon dioxide to carbonic acid and then to protons and bicarbonate ions.
- INVOLUCRIN
-
A cytoskeletal protein in squamous cells that is involved in their terminal differentiation.
- DEEP-VEIN THROMBOSIS
-
The process of clot formation in the venous circulation, usually in the lower limbs or pelvis.
- PULMONARY EMBOLISM THROMBOSIS
-
The occlusion of pulmonary veins by clots dislodged from peripheral deep veins, usually from the lower extremities.
- ACCELERATED RADIOTHERAPY WITH CARBOGEN AND NICOTINAMIDE
-
Experimental technique to improve blood flow and oxygen delivery to tumours.
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Harris, A. Hypoxia â a key regulatory factor in tumour growth. Nat Rev Cancer 2, 38â47 (2002). https://doi.org/10.1038/nrc704
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DOI: https://doi.org/10.1038/nrc704
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World Journal of Surgical Oncology (2024)
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Exploring chronic and transient tumor hypoxia for predicting the efficacy of hypoxia-activated pro-drugs
npj Systems Biology and Applications (2024)
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The role of oxygen tension in cell fate and regenerative medicine: implications of hypoxia/hyperoxia and free radicals
Cell and Tissue Banking (2024)
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Primary processes in photophysics and photochemistry of a potential light-activated anti-cancer dirhodium complex
Photochemical & Photobiological Sciences (2024)
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Potential Underlying Mechanisms Explaining the Cardiorenal Benefits of SodiumâGlucose Cotransporter 2 Inhibitors
Advances in Therapy (2024)