alexa The transcription factor nuclear factor-kappa B and cancer.
Genetics & Molecular Biology

Genetics & Molecular Biology

Cloning & Transgenesis

Author(s): Escrcega RO, FuentesAlexandro S, GarcaCarrasco M, Gatica A, Zamora A, Escrcega RO, FuentesAlexandro S, GarcaCarrasco M, Gatica A, Zamora A

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Abstract Since the discovery of nuclear factor-kappa B (NF-kappaB) in 1986, many studies have been conducted showing the link between the NF-kappaB signalling pathway and control of the inflammatory response. Today it is well known that control of the inflammatory response and apoptosis is closely related to the activation of NF-kappaB. Three NF-kappaB activation pathways exist. The first (the classical pathway) is normally triggered in response to microbial and viral infections or exposure to pro-inflammatory cytokines that activate the tripartite IKK complex, leading to phosphorylation-induced IkappaB degradation and depends mainly on IKKbeta activity. The second (the alternative pathway), leads to selective activation of p52:RelB dimers by inducing the processing of the NF-kappaB2/p100 precursor protein, which mostly occurs as a heterodimer with RelB in the cytoplasm. This pathway is triggered by certain members of the tumour necrosis factor cytokine family, through selective activation of IKKalpha homodimers by the upstream kinase NIK. The third pathway is named CK2 and is IKK independent. NF-kappaB acts through the transcription of anti-apoptotic proteins, leading to increased proliferation of cells and tumour growth. It is also known that some drugs act directly in the inhibition of NF-kappaB, thus producing regulation of apoptosis; some examples are aspirin and corticosteroids. Here we review the role of NF-kappaB in the control of apoptosis, its link to oncogenesis, the evidence of several studies that show that NF-kappaB activation is closely related to different cancers, and finally the potential target of NF-kappaB as cancer therapy.
This article was published in Clin Oncol (R Coll Radiol) and referenced in Cloning & Transgenesis

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