Diversity and dynamic changes of anelloviruses in plasma following allogeneic hematopoietic stem cell transplantation.
Estela GiménezCarolina MonzóEliseo AlbertAzahara Fuentes-TrilloEnrique SedaJosé Luis PiñanaJuan Carlos Hernández BoludaCarlos SolanoJavier ChavesDavide NavarroPublished in: Journal of medical virology (2020)
Monitoring of alphatorquevirus (torque teno virus [TTV]) DNA in plasma may prove to be useful to assess the net state of immune competence following allogeneic hematopoietic stem cell transplantation (allo-HSCT). There are scarce data published on the prevalence of beta (torque teno mini virus [TTMV]) and gammatorqueviruses (torque teno midi virus [TTMDV]) and, in particular, on the dynamics of anelloviruses in allo-HSCT patients. Twenty-five allo-HSCT recipients with available plasma specimens obtained before conditioning and after engraftment were included. Degenerated primers targeting a highly conserved genomic sequence across all anelloviruses were designed for genomic amplification and high-throughput sequencing. Co-detection of TTV, TTMV, and TTMDV both in pre-transplant and post-engraftment plasma specimens was documented in more than two-thirds of patients. The use of quantitative real-time polymerase chain reaction (PCR) assays targeting TTMV and TTMDV in addition to TTV may add value to TTV-specific PCR assays in the inference of the net state of immunosuppresion or immune competence in this clinical setting.
Keyphrases
- allogeneic hematopoietic stem cell transplantation
- end stage renal disease
- acute myeloid leukemia
- acute lymphoblastic leukemia
- chronic kidney disease
- hematopoietic stem cell
- prognostic factors
- high resolution
- real time pcr
- cancer therapy
- mass spectrometry
- dna methylation
- artificial intelligence
- cell free
- circulating tumor
- sensitive detection
- quantum dots