Abstract
Anaplastic large cell lymphoma (ALCL) is a peripheral T-cell lymphoma presenting mostly in children and young adults. The natural progression of this disease is largely unknown as is the identity of its true cell of origin. Here we present a model of peripheral ALCL pathogenesis where the malignancy is initiated in early thymocytes, before T-cell receptor (TCR) β-rearrangement, which is bypassed in CD4/NPM-ALK transgenic mice following Notch1 expression. However, we find that a TCR is required for thymic egress and development of peripheral murine tumours, yet this TCR must be downregulated for T-cell lymphomagenesis. In keeping with this, clonal TCR rearrangements in human ALCL are predominantly in-frame, but often aberrant, with clonal TCRα but no comparable clonal TCRβ rearrangement, yielding events that would not normally be permissive for survival during thymic development. Children affected by ALCL may thus harbour thymic lymphoma-initiating cells capable of seeding relapse after chemotherapy.
Original language | English |
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Article number | 10087 |
Journal | Nature Communications |
Volume | 7 |
DOIs | |
Publication status | Published - 12 Jan 2016 |
Bibliographical note
Funding Information:S.D.T., L.K., O.M., L.B. and L.L. are members of the European Research Initiative for ALK-Related Malignancies (www.erialcl.net). S.D.T. receives funding from Bloodwise. T.I.M. was in receipt of a Gordon Piller PhD studentship from Leukaemia and Lymphoma Research at the time of the study. C.J.F. is supported with PhD funding from the bbsrc. S.D.T., S.M., I.A. and T.I.M. are supported with funding from the University of Ha''il, Kingdom of Saudi Arabia. Support to the Macintyre Laboratory includes the French Institut National de Cancer (INCa) PAIR Lymphoma T-COG (No 2008-021) and RT-07 Immature T/My leukemia ''Recherche Translationnelle'' programmes and MD/PhD grant funding to A.T., the Enfants et Santé and Société Française de Cancers de l''Enfant (SFCE) and the Association Laurette Fugain (ALF2012-09). Support to the Lamant Laboratory includes INCa PAIR Lymphoma T-COG. This research was supported by the Cambridge NIHR BRC Cell Phenotyping Hub. We are grateful to Dr Phil G. Stevenson, Department of Pathology, University of Cambridge, UK for providing MHV68 for our studies, Professor Jean Soulier for CGH array analysis of human ALCL samples, Michaela Schlederer for her excellent technical assistance and Mohamed Belhocine for bioinformatics assistance.
Funding Information:
S.D.T., L.K., O.M., L.B. and L.L. are members of the European Research Initiative for ALK-Related Malignancies (www.erialcl.net). S.D.T. receives funding from Bloodwise. T.I.M. was in receipt of a Gordon Piller PhD studentship from Leukaemia and Lymphoma Research at the time of the study. C.J.F. is supported with PhD funding from the bbsrc. S.D.T., S.M., I.A. and T.I.M. are supported with funding from the University of Ha’il, Kingdom of Saudi Arabia. Support to the Macintyre Laboratory includes the French Institut National de Cancer (INCa) PAIR Lymphoma T-COG (N° 2008-021) and RT-07 Immature T/My leukemia ‘Recherche Translationnelle’ programmes and MD/ PhD grant funding to A.T., the Enfants et Santé and Société Franc¸aise de Cancers de l’Enfant (SFCE) and the Association Laurette Fugain (ALF2012-09). Support to the Lamant Laboratory includes INCa PAIR Lymphoma T-COG. This research was supported by the Cambridge NIHR BRC Cell Phenotyping Hub. We are grateful to Dr Phil G. Stevenson, Department of Pathology, University of Cambridge, UK for providing MHV68 for our studies, Professor Jean Soulier for CGH array analysis of human ALCL samples, Michaela Schlederer for her excellent technical assistance and Mohamed Bel-hocine for bioinformatics assistance.
ASJC Scopus subject areas
- General Chemistry
- General Biochemistry,Genetics and Molecular Biology
- General
- General Physics and Astronomy