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January 24, 2010 | History

The progression of precursor B cell acute lymphoblastic leukemia in murine models 1 edition

The progression of precursor B cell acute lymphoblastic leukemia in mu ...
Emily Jean St-Denis

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The progression of precursor B cell acute lymphoblastic leukemia in murine models.

Published 2005 .
Written in English.

About the Book

Acute lymphoblastic leukemia (ALL), the most common childhood cancer, involves abnormal survival and expansion of immature lymphocytes. Previously, our lab generated p53-/- Prkdcscid/scid double mutant (DM) and p53 -/-RAG-2-/- Prkdcscid/scid triple mutant (TM) mice that rapidly develop immature B cell ALL. The majority of TM, but not DM mice display CNS dissemination, a complication in human ALL. Here I show that despite lacking a pre-B cell receptor, DM and TM leukemias transition from pro-B to pre-B cells, although TM leukemias retain some pro-B cell characteristics. Additionally, I characterized discrete phases of leukemogenesis in both models. During the DM pre-leukemic phase there is an accumulation of oligoclonal pro-B cells suggesting selection for mutations that promote survival and/or proliferation. Furthermore, CNS infiltrates were distinct from leukemic TM BM cells suggesting that they may represent selected clonal variants. Therefore, our models provide an avenue to investigate the molecular alterations that subvert normal lymphocyte development, promoting leukemogenesis.

Edition Notes

Source: Masters Abstracts International, Volume: 44-02, page: 0827.

Thesis (M.Sc.)--University of Toronto, 2005.

Electronic version licensed for access by U. of T. users.

GERSTEIN MICROTEXT copy on microfiche (2 microfiches).

The Physical Object

130 leaves.
Number of pages

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