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National Repository of Grey Literature 1 records found  Search took 0.00 seconds. 
Pre-clinical model of acute promyelocytic leukemia:/study of the anti-leukemic effect induced by ATRA and DNA vaccination
 Pokorná, Kateřina ; Holáň, Vladimír (advisor) ; Stöckbauer, Petr (referee) ; Degos, Laurent (referee)
DOCTORAL THESIS 2012 POKORNA Abstract We have used a well characterized transplantable transgenic mouse model which mimics human acute promyelocytic leukemia (APL), both in its biological characteristics and its response to conventional therapeutic drugs. The aim of our study was to better characterize the efficacy of the combined treatment and to determine molecular markers of clinical outcome. We established a minimal residual disease monitoring based on the high sensitivity of detection of PML-RAR transcripts by polymerase chain reaction (PCR) technology in APL mice. We showed that oncogene-specific PCR-based assays allow, like in patients, the diagnosis, follow-up and prediction of disease evolution. Furthermore, PCR assay was used to assess various tissues and organs for the presence of PML-RAR-positive cells in minimal residual disease free long-term survivors. As expected, majority of mice had no measurable tissue level of PML-RAR demonstrating the efficacy of immunotherapy. However, tracking the oncogene-positive cells reveals for the first time that extramedullary PML-RAR-positive cell reservoirs such as the brain may persist and be involved in the leukemia relapse. We aimed at investigating the immune responses involved in the anti-leukemic effect of the combined immutherapy. To evaluate the...
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