TY - JOUR
T1 - Transient expression of Bcl6 is sufficient for oncogenic function and induction of mature B-cell lymphoma
AU - Green, Michael R.
AU - Vicente-Dueñas, Carolina
AU - Romero-Camarero, Isabel
AU - Long Liu, Chih
AU - Dai, Bo
AU - González-Herrero, Inés
AU - García-Ramírez, Idoia
AU - Alonso-Escudero, Esther
AU - Iqbal, Javeed
AU - Chan, Wing C.
AU - Campos-Sanchez, Elena
AU - Orfao, Alberto
AU - Pintado, Belén
AU - Flores, Teresa
AU - Blanco, Oscar
AU - Jiménez, Rafael
AU - Martínez-Climent, Jose Angel
AU - Criado, Francisco Javier García
AU - Cenador, María Begoña García
AU - Zhao, Shuchun
AU - Natkunam, Yasodha
AU - Lossos, Izidore S.
AU - Majeti, Ravindra
AU - Melnick, Ari
AU - Cobaleda, César
AU - Alizadeh, Ash A.
AU - Sánchez-García, Isidro
N1 - Funding Information:
We are grateful to Dr Meinrad Busslinger for continuous and generous help and ideas over the years with this project, Dr Takeshi Tokuhisa for the mouse Bcl6 cDNA, Professor Michael Reth for the mb1-cre mice and Dr E. Dzierzak for the Sca1 promoter Research in A.A.A. group is supported in part by the Damon Runyon Cancer Research Foundation, the Lymphoma Research Foundation, Gabrielle’s Angel Foundation for Cancer Research, the Leukemia and Lymphoma Society, the National Institutes of Health, and the Department of Defense. Research in I.S.-G. group is supported partially by FEDER and by MICINN (SAF2009-08803 and SAF2012-32810), Junta de Castilla y León (CSI13A08 and proyecto Biomedicina 2009–2010), MEC OncoBIO Consolider-Ingenio 2010 (ref. no. CSD2007-0017), National Institutes of Health (NIH) grant (R01 CA109335-04A1) and by Group of Excellence Grant (GR15) from Junta de Castilla y Leon. M.R.G. and A.A.A. are Special Fellows of the Leukemia and Lymphoma Society. Funding for single-cell human HSPC studies was provided by NIH grant (U01HL099999) to R.M. and A.A.A. A.M. is supported by NCI R01 CA104348, the Chemotherapy Foundation, the Sam Waxman Cancer Research Foundation, and the G&P Foundation, and is a Leukemia and Lymphoma Society Scholar. Research at C.C.’s lab is partially supported by FEDER, Fondo de Investigaciones Sanitarias (PI080164), Proyectos Intramurales Especiales (CSIC) and Junta de Castilla y León (SA060A09 and proyecto Biomedicina 2009–2010). Research of A.O. is supported by a grant from the Instituto de Salud Carlos III, Ministerio de Sanidad y Consumo, Madrid, Spain (IISCIII-RTICC RD06/0020/0035-FEDER).
PY - 2014/6/2
Y1 - 2014/6/2
N2 - Diffuse large B-cell lymphoma (DLBCL) is the most common lymphoma and can be separated into two subtypes based upon molecular features with similarities to germinal centre B-cells (GCB-like) or activated B-cells (ABC-like). Here we identify gain of 3q27.2 as being significantly associated with adverse outcome in DLBCL and linked with the ABC-like subtype. This lesion includes the BCL6 oncogene, but does not alter BCL6 transcript levels or target-gene repression. Separately, we identify expression of BCL6 in a subset of human haematopoietic stem/progenitor cells (HSPCs). We therefore hypothesize that BCL6 may act by hit-and-run oncogenesis. We model this hit-and-run mechanism by transiently expressing Bcl6 within murine HSPCs, and find that it causes mature B-cell lymphomas that lack Bcl6 expression and target-gene repression, are transcriptionally similar to post-GCB cells, and show epigenetic changes that are conserved from HSPCs to mature B-cells. Together, these results suggest that BCL6 may function in a hit-and-run role in lymphomagenesis.
AB - Diffuse large B-cell lymphoma (DLBCL) is the most common lymphoma and can be separated into two subtypes based upon molecular features with similarities to germinal centre B-cells (GCB-like) or activated B-cells (ABC-like). Here we identify gain of 3q27.2 as being significantly associated with adverse outcome in DLBCL and linked with the ABC-like subtype. This lesion includes the BCL6 oncogene, but does not alter BCL6 transcript levels or target-gene repression. Separately, we identify expression of BCL6 in a subset of human haematopoietic stem/progenitor cells (HSPCs). We therefore hypothesize that BCL6 may act by hit-and-run oncogenesis. We model this hit-and-run mechanism by transiently expressing Bcl6 within murine HSPCs, and find that it causes mature B-cell lymphomas that lack Bcl6 expression and target-gene repression, are transcriptionally similar to post-GCB cells, and show epigenetic changes that are conserved from HSPCs to mature B-cells. Together, these results suggest that BCL6 may function in a hit-and-run role in lymphomagenesis.
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U2 - 10.1038/ncomms4904
DO - 10.1038/ncomms4904
M3 - Article
C2 - 24887457
AN - SCOPUS:84902097287
SN - 2041-1723
VL - 5
JO - Nature Communications
JF - Nature Communications
M1 - 3904
ER -