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Burkitt lymphoma pathogenesis and therapeutic targets from structural and functional genomics.


ABSTRACT: Burkitt's lymphoma (BL) can often be cured by intensive chemotherapy, but the toxicity of such therapy precludes its use in the elderly and in patients with endemic BL in developing countries, necessitating new strategies. The normal germinal centre B cell is the presumed cell of origin for both BL and diffuse large B-cell lymphoma (DLBCL), yet gene expression analysis suggests that these malignancies may use different oncogenic pathways. BL is subdivided into a sporadic subtype that is diagnosed in developed countries, the Epstein-Barr-virus-associated endemic subtype, and an HIV-associated subtype, but it is unclear whether these subtypes use similar or divergent oncogenic mechanisms. Here we used high-throughput RNA sequencing and RNA interference screening to discover essential regulatory pathways in BL that cooperate with MYC, the defining oncogene of this cancer. In 70% of sporadic BL cases, mutations affecting the transcription factor TCF3 (E2A) or its negative regulator ID3 fostered TCF3 dependency. TCF3 activated the pro-survival phosphatidylinositol-3-OH kinase pathway in BL, in part by augmenting tonic B-cell receptor signalling. In 38% of sporadic BL cases, oncogenic CCND3 mutations produced highly stable cyclin D3 isoforms that drive cell cycle progression. These findings suggest opportunities to improve therapy for patients with BL.

SUBMITTER: Schmitz R 

PROVIDER: S-EPMC3609867 | biostudies-literature | 2012 Oct

REPOSITORIES: biostudies-literature

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Burkitt lymphoma pathogenesis and therapeutic targets from structural and functional genomics.

Schmitz Roland R   Young Ryan M RM   Ceribelli Michele M   Jhavar Sameer S   Xiao Wenming W   Zhang Meili M   Wright George G   Shaffer Arthur L AL   Hodson Daniel J DJ   Buras Eric E   Liu Xuelu X   Powell John J   Yang Yandan Y   Xu Weihong W   Zhao Hong H   Kohlhammer Holger H   Rosenwald Andreas A   Kluin Philip P   Müller-Hermelink Hans Konrad HK   Ott German G   Gascoyne Randy D RD   Connors Joseph M JM   Rimsza Lisa M LM   Campo Elias E   Jaffe Elaine S ES   Delabie Jan J   Smeland Erlend B EB   Ogwang Martin D MD   Reynolds Steven J SJ   Fisher Richard I RI   Braziel Rita M RM   Tubbs Raymond R RR   Cook James R JR   Weisenburger Dennis D DD   Chan Wing C WC   Pittaluga Stefania S   Wilson Wyndham W   Waldmann Thomas A TA   Rowe Martin M   Mbulaiteye Sam M SM   Rickinson Alan B AB   Staudt Louis M LM  

Nature 20120812 7418


Burkitt's lymphoma (BL) can often be cured by intensive chemotherapy, but the toxicity of such therapy precludes its use in the elderly and in patients with endemic BL in developing countries, necessitating new strategies. The normal germinal centre B cell is the presumed cell of origin for both BL and diffuse large B-cell lymphoma (DLBCL), yet gene expression analysis suggests that these malignancies may use different oncogenic pathways. BL is subdivided into a sporadic subtype that is diagnose  ...[more]

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