Progression from lymphoid hyperplasia to high-grade malignant lymphoma in mice transgenic for the t(14;18)

来自 Nature

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FOLLICULAR lymphoma, the most common human lymphoma, characteristically has a t(14;18) interchromosomal translocation. It is typically an indolent disease comprised of small resting B cells, but frequently develops into a high-grade lymphomaThe t(14; 18) translocates thegene, generating a deregulated–immunoglobulin fusion gene. Bcl-2 is a novel inner mitochondrial membrane proteinthat extends the survival of certain cells by blocking programmed cell death. To determine the oncogenic potential of the t(14; 18) translocation, we produced transgenic mice bearing a–immunoglobulin minigene that structurally mimicked the t(14; 18) (ref. 12). An indolent follicular hyperplasia in these transgenic mice progressed to a malignant diffuse large-cell lymphoma. The long latency, progression from polyclonal to monoclonal disease, and histological conversion, are all suggestive of secondary changes. Half of the immunoblastic high-grade lymphomas had a rearrangedgene. Our transgenic mice provide an animal model for tumour progression in t(14; 18) lymphoma and show that prolonged B-cell life increases tumour incidence.

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Animals Humans Mice Lymphoid Tissue Lymphoma Cell Transformation, Neoplastic Hyperplasia Genes, myc Genes, Immunoglobulin Gene Rearrangement