Project description:Adult T-cell leukemia-lymphoma (ATLL) is an HTLV-1-associated lymphoproliferative malignancy that is frequently fatal. We compared gene expression profiles (GEPs) of leukemic specimens from 9 patients with ATLL at the time of diagnosis and immediately after combination therapy with zidovudine (AZT) and interferon alpha (IFN). GEPs were also related to genetic aberrations determined by comparative genomic hybridization. We identified several genes anomalously over-expressed in the ATLL leukemic cells at the mRNA level, including LYN, CSPG2 and LMO2, with confirmation of LMO2 expression confirmed in ATLL cells at the protein level. In vivo AZT- and IFNa treatment evoked a marked induction of interferon-induced genes accompanied by repression of cell-cycles regulated genes including those encoding ribosomal proteins. Remarkably, patients not responding to IFNa/AZT differed most from responding patients in relative over expression of these same IFN-responsive genes, as well as components of the antigen processing and presentation apparatus. Demonstration of specific gene expression signatures associated with response to AZT-IFNa therapy may provide novel insights into the mechanisms of action in ATLL. compound_treatment_design
Project description:Adult T-cell leukemia-lymphoma (ATLL) is an HTLV-1-associated lymphoproliferative malignancy that is frequently fatal. We compared gene expression profiles (GEPs) of leukemic specimens from 9 patients with ATLL at the time of diagnosis and immediately after combination therapy with zidovudine (AZT) and interferon alpha (IFN). GEPs were also related to genetic aberrations determined by comparative genomic hybridization. We identified several genes anomalously over-expressed in the ATLL leukemic cells at the mRNA level, including LYN, CSPG2 and LMO2, with confirmation of LMO2 expression confirmed in ATLL cells at the protein level. In vivo AZT- and IFNa treatment evoked a marked induction of interferon-induced genes accompanied by repression of cell-cycles regulated genes including those encoding ribosomal proteins. Remarkably, patients not responding to IFNa/AZT differed most from responding patients in relative over expression of these same IFN-responsive genes, as well as components of the antigen processing and presentation apparatus. Demonstration of specific gene expression signatures associated with response to AZT-IFNa therapy may provide novel insights into the mechanisms of action in ATLL.
Project description:Impact of Human T-cell Leukemia Virus-1 and Epstein-Barr Virus Infections on B-cell Lymphoma and Adult T-cell Leukemia/Lymphoma Developments
Project description:We exploited the use of I-BET762, copanlisib, and bardoxolone methyl inhibitors as triple combination to understand the interactions between these three pathways in Adult T cell leukemia/lymphoma.
Project description:Single-nucleus RNA sequencing (snRNA-seq) was used to profile the transcriptome of 16,015 nuclei in human adult testis. This dataset includes five samples from two different individuals. This dataset is part of a larger evolutionary study of adult testis at the single-nucleus level (97,521 single-nuclei in total) across mammals including 10 representatives of the three main mammalian lineages: human, chimpanzee, bonobo, gorilla, gibbon, rhesus macaque, marmoset, mouse (placental mammals); grey short-tailed opossum (marsupials); and platypus (egg-laying monotremes). Corresponding data were generated for a bird (red junglefowl, the progenitor of domestic chicken), to be used as an evolutionary outgroup.