TNF-alpha/IL-1/NF-kappaB transduction pathway in human cancer prostate.

Abstract:

:TNFalpha exerts apoptosis throughout an intracellular transduction pathway that involves the kinase proteins TRAF-2 (integration point of apoptotic and survival signals), ASK1 (pro-apoptotic protein), MEK-4 (p38 activator and metastasis suppressor gene), JNK (stress mitogen activated protein kinase) and the transcription factor AP-1. TNFalpha also exerts proliferation by p38 activation, or when TRAF-2 simultaneously induces the transcription factor NF-kappaB by NIK. NIK and p38 may also be activated by IL-1. P38 activated several transcription factors such as Elk-1, ATF-2 and NF-kappaB. NIK also may activate NF-kappaB. The aim of the present article was to evaluate the different components of this TNFalpha/IL-1 transduction pathway in human prostate carcinoma (PC) in comparison with normal human prostate. In prostate cancer, pro-apoptotic TNFalpha/AP-1 pathway is probably inactivated by different factors such as p21 (at ASK-1 level) and bcl-2 (at JNK level), or diverted towards p38 or NIK activation. IL-1alpha enhances proliferation through IL-1RI that activates either NIK or p38 transduction pathway. P38 and NIK activate different transcription factors related with cell proliferation and survival such as ATF-2, Elk-1 or NF-kappaB. In order to search a possible target to cancer prostate treatment we proposed that inhibition of several proinflamatory cytokines such as IL-1 and TNFalpha might be a possible target for PC treatment, because decrease the activity of all transduction pathway members that activate transcription factors as NF-kappaB, Elk-1 or ATF-2.

journal_name

Histol Histopathol

authors

Royuela M,Rodríguez-Berriguete G,Fraile B,Paniagua R

doi

10.14670/HH-23.1279

subject

Has Abstract

pub_date

2008-10-01 00:00:00

pages

1279-90

issue

10

eissn

0213-3911

issn

1699-5848

journal_volume

23

pub_type

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