Journal
LEUKEMIA RESEARCH
Volume 31, Issue 3, Pages 315-320Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.leukres.2006.06.023
Keywords
CD40; LMP1; NF-kappa B; lymphoma; signal transduction; transformation
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Funding
- NCI NIH HHS [CA47006] Funding Source: Medline
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The oncoprotein LMP1 mimics an activated CD40 receptor, yet it is not known whether constitutive CD40 signaling, like LMP1, is sufficient to transform cells. Here we demonstrate that constitutive activation of the CD40 pathway by a chimeric LMP1CD40 molecule resembles the transforming function of LMP1 in inducing loss of contact inhibition and anchorage independent growth of Rat1 fibroblasts. Rat1 transformation correlates with the expression level of LMP1CD40 and depends on its ability to oligomerize. Our data provide direct evidence for the oncogenic potential of the CD40 signaling pathway, which is also established as a model-mechanism for LMP1-induced transformation. (c) 2006 Elsevier Ltd. All rights reserved.
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