Molecular assessment of post-BMT chimerism using various biologic specimens and automated DNA sizing technology
JOURNAL OF HEMATOTHERAPY & STEM CELL RESEARCH
Authors: Jolkowska, J; Wachowiak, J; Lange, A; Kwissa, M; Witt, M
Abstract
Highly polymorphic microsatellite markers provide useful genetic markers for detection of complete or mixed chimerism in patients after allogeneic BMT (allo-BMT). We report application of automated DNA sizing technology for detection of post-BMT chimerism using fresh peripheral blood, BM, or archival blood smears and various DNA isolation techniques. Donors' and recipients' DNA was amplified with fluorescent PCR primers specific for short tandem repeat (STR) marker loci: FGA, VWA, TH01, F13A1, D21S11. Chimerism was assessed in 14 recipients after allo-BMT. A complete chimerism was detected in 10 patients, in 3 patients we observed fluctuations of chimerism status, and mixed chimerism was assessed in 1 patient. We show that DNA from different types of biologic specimens (whole peripheral blood, BM suspension, archival blood smears), prepared according to the various isolation techniques (salting-out method, phenol chloroform extraction, Chelex procedure) and amplified with fluorescent PGR primers for microsatellite markers, enable identification of chimerism status following allo-BMT in children.
Transcription analysis of the response of chicken bursa of Fabricius to avian leukosis virus subgroup J strain JS09GY3
VIRUS RESEARCH
Authors: Hang, Bolin; Sang, Jianjun; Qin, Aijian; Qian, Kun; Shao, Hongxia; Mei, Mei; Ye, Jianqiang
Abstract
Background: Avian leukosis virus subgroup J (ALV-J) causes tumours and immunosuppression in chickens. The host-ALV interactions at the transcriptional level are unknown. In this study, gene expression profiling was performed to analyse the bursa response induced by ALV-J strain JS09GY3 in chickens. Results: A total of 594 gene transcripts displaying differential expression during ALV-J infection were identified. These differentially expressed genes are involved in binding, biological regulation, metabolic processes (MYF6 and FABP3), response to stimulus (F13A1 and CNGA3) and immune system processes (LY86, CATHL2, CCL4, and OASL), and several differentially expressed genes (e.g., ETV7, MMP9, and NOV) are involved in tumourigenesis. Eight differentially expressed genes were confirmed by quantitative reverse transcription-PCR (qRT-PCR). Based on pathway analysis, the notable signalling pathways mainly included cytokine cytokine receptor interaction, the JAK-STAT signalling pathway and the RIG-1-like receptor signalling pathway. Conclusions: The gene expression profile obtained in this study may aid a better understanding of the molecular pathogenesis of ALV-J infection in chickens. (C) 2014 Elsevier B.V. All rights reserved.