TY - JOUR
T1 - Gene expression analysis uncovers similarity and differences among Burkitt lymphoma subtypes
AU - Piccaluga, Pier Paolo
AU - De Falco, Giulia
AU - Kustagi, Manjunath
AU - Gazzola, Anna
AU - Agostinelli, Claudio
AU - Tripodo, Claudio
AU - Leucci, Eleonora
AU - Onnis, Anna
AU - Astolfi, Annalisa
AU - Sapienza, Maria Rosaria
AU - Bellan, Cristiana
AU - Lazzi, Stefano
AU - Tumwine, Lynnette
AU - Mawanda, Michael
AU - Ogwang, Martin
AU - Calbi, Valeria
AU - Formica, Serena
AU - Califano, Andrea
AU - Pileri, Stefano A
AU - Leoncini, Lorenzo
PY - 2011/3/31
Y1 - 2011/3/31
N2 - Burkitt lymphoma (BL) is classified into 3 clinical subsets: endemic, sporadic, and immunodeficiency-associated BL. So far, possible differences in their gene expression profiles (GEPs) have not been investigated. We studied GEPs of BL subtypes, other B-cell lymphomas, and B lymphocytes; first, we found that BL is a unique molecular entity, distinct from other B-cell malignancies. Indeed, by unsupervised analysis all BLs clearly clustered apart of other lymphomas. Second, we found that BL subtypes presented slight differences in GEPs. Particularly, they differed for genes involved in cell cycle control, B-cell receptor signaling, and tumor necrosis factor/nuclear factor κB pathways. Notably, by reverse engineering, we found that endemic and sporadic BLs diverged for genes dependent on RBL2 activity. Furthermore, we found that all BLs were intimately related to germinal center cells, differing from them for molecules involved in cell proliferation, immune response, and signal transduction. Finally, to validate GEP, we applied immunohistochemistry to a large panel of cases and showed that RBL2 can cooperate with MYC in inducing a neoplastic phenotype in vitro and in vivo. In conclusion, our study provided substantial insights on the pathobiology of BLs, by offering novel evidences that may be relevant for its classification and possibly future treatment.
AB - Burkitt lymphoma (BL) is classified into 3 clinical subsets: endemic, sporadic, and immunodeficiency-associated BL. So far, possible differences in their gene expression profiles (GEPs) have not been investigated. We studied GEPs of BL subtypes, other B-cell lymphomas, and B lymphocytes; first, we found that BL is a unique molecular entity, distinct from other B-cell malignancies. Indeed, by unsupervised analysis all BLs clearly clustered apart of other lymphomas. Second, we found that BL subtypes presented slight differences in GEPs. Particularly, they differed for genes involved in cell cycle control, B-cell receptor signaling, and tumor necrosis factor/nuclear factor κB pathways. Notably, by reverse engineering, we found that endemic and sporadic BLs diverged for genes dependent on RBL2 activity. Furthermore, we found that all BLs were intimately related to germinal center cells, differing from them for molecules involved in cell proliferation, immune response, and signal transduction. Finally, to validate GEP, we applied immunohistochemistry to a large panel of cases and showed that RBL2 can cooperate with MYC in inducing a neoplastic phenotype in vitro and in vivo. In conclusion, our study provided substantial insights on the pathobiology of BLs, by offering novel evidences that may be relevant for its classification and possibly future treatment.
KW - Animals
KW - Burkitt Lymphoma
KW - Cell Line, Tumor
KW - Cluster Analysis
KW - Gene Expression Profiling
KW - Gene Expression Regulation, Neoplastic
KW - Humans
KW - Mice
KW - Mice, Nude
KW - Microarray Analysis
KW - Neoplasm Transplantation
KW - Phenotype
KW - Transplantation, Heterologous
U2 - 10.1182/blood-2010-08-301556
DO - 10.1182/blood-2010-08-301556
M3 - Journal article
C2 - 21245480
SN - 0006-4971
VL - 117
SP - 3596
EP - 3608
JO - Blood
JF - Blood
IS - 13
ER -