Publication Date:
2008-03-08
Description:
Diffuse large B cell lymphoma (DLBCL) is the most common form of non-Hodgkin's lymphoma. In the least curable (ABC) subtype of DLBCL, survival of the malignant cells is dependent on constitutive activation of the nuclear factor-kappaB (NF-kappaB) signaling pathway. In normal B cells, antigen receptor-induced NF-kappaB activation requires CARD11, a cytoplasmic scaffolding protein. To determine whether CARD11 contributes to tumorigenesis, we sequenced the CARD11 gene in human DLBCL tumors. We detected missense mutations in 7 of 73 ABC DLBCL biopsies (9.6%), all within exons encoding the coiled-coil domain. Experimental introduction of CARD11 coiled-coil domain mutants into lymphoma cell lines resulted in constitutive NF-kappaB activation and enhanced NF-kappaB activity upon antigen receptor stimulation. These results demonstrate that CARD11 is a bona fide oncogenein DLBCL, providing a genetic rationale for the development of pharmacological inhibitors of the CARD11 pathway for DLBCL therapy.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Lenz, Georg -- Davis, R Eric -- Ngo, Vu N -- Lam, Lloyd -- George, Thaddeus C -- Wright, George W -- Dave, Sandeep S -- Zhao, Hong -- Xu, Weihong -- Rosenwald, Andreas -- Ott, German -- Muller-Hermelink, Hans Konrad -- Gascoyne, Randy D -- Connors, Joseph M -- Rimsza, Lisa M -- Campo, Elias -- Jaffe, Elaine S -- Delabie, Jan -- Smeland, Erlend B -- Fisher, Richard I -- Chan, Wing C -- Staudt, Louis M -- UO1-CA84967/CA/NCI NIH HHS/ -- Intramural NIH HHS/ -- New York, N.Y. -- Science. 2008 Mar 21;319(5870):1676-9. doi: 10.1126/science.1153629. Epub 2008 Mar 6.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Metabolism Branch, Division of Cancer Treatment and Diagnosis, Center for Cancer Research, National Cancer Institute, Bethesda, MD 20892, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/18323416" target="_blank"〉PubMed〈/a〉
Keywords:
Amino Acid Sequence
;
Apoptosis Regulatory Proteins/chemistry/*genetics/metabolism
;
CARD Signaling Adaptor Proteins/chemistry/*genetics/metabolism
;
Cell Line, Tumor
;
Cytoplasm/metabolism
;
Guanylate Cyclase/chemistry/*genetics/metabolism
;
Humans
;
I-kappa B Kinase/metabolism
;
Jurkat Cells
;
Lymphoma, Large B-Cell, Diffuse/*genetics
;
Molecular Sequence Data
;
*Mutation, Missense
;
NF-kappa B
;
*Oncogenes
;
Protein Structure, Tertiary
;
Receptors, Antigen, B-Cell/physiology
;
Sequence Analysis, DNA
Print ISSN:
0036-8075
Electronic ISSN:
1095-9203
Topics:
Biology
,
Chemistry and Pharmacology
,
Computer Science
,
Medicine
,
Natural Sciences in General
,
Physics
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