title: Circulating human microRNAs are not linked to JC polyomavirus serology or urinary viral load in healthy subjects.
abstract: BACKGROUND
  JC polyomavirus (JCPyV) is a widespread human polyomavirus that usually resides latently in its host. It can be reactivated under immunomodulating conditions and cause Progressive Multifocal Leukoencephalopathy (PML). Circulating microRNAs (miRNAs) are emerging as promising biomarkers for several pathologies. In this study, we have investigated whether circulating miRNAs exist that are differentially expressed between JCPyV seropositive and JCPyV seronegative on the one hand or between JCPyV shedders and JCPyV non-shedders on the other hand.
  
  
  METHODS
  Human miRNA expression profiling was performed in a small set of plasma samples obtained from seronegative subjects, seropositive shedders and seropositive non-shedders. A set of 10 miRNAs was selected for further analysis in a larger group of samples.
  
  
  RESULTS
  Based on the plasma profiling experiment of 30 samples, 6 miRNAs were selected that were possibly differentially expressed between seropositive and seronegative subjects and 4 miRNAs were selected that were possibly differentially expressed between shedders and non-shedders. Subsequently, expression of these 10 selected miRNAs was assessed in an independent set of 100 plasma samples. Results indicated that none of them were differentially expressed.
  
  
  CONCLUSIONS
  This study could not identify circulating human miRNAs that were differentially expressed between plasma from JCPyV seropositive and JCPyV seronegative subjects or between JCPyV shedders and JCPyV non-shedders.
authors.affiliation: Janssen Diagnostics, Turnhoutseweg 30, 2340 Beerse, Belgium. olagatie@its.jnj.com.
authors.forename: Ole
authors.initials: O
authors.lastname: Lagatie
authors.forename: Tom
authors.initials: T
authors.lastname: Van Loy
authors.forename: Luc
authors.initials: L
authors.lastname: Tritsmans
authors.forename: Lieven J
authors.initials: LJ
authors.lastname: Stuyver
mesh_terms: D000328:Adult; D000368:Aged; D015415:Biomarkers / Q000097:blood*; D005260:Female; D006801:Humans; D007577:JC Virus / Q000145:classification* / Q000302:isolation & purification; D008297:Male; D035683:MicroRNAs / Q000097:blood*; D008875:Middle Aged; D010949:Plasma / Q000737:chemistry; D027601:Polyomavirus Infections / Q000175:diagnosis* / Q000821:virology*; D014556:Urine / Q000821:virology*; D019562:Viral Load; D055815:Young Adult
chemical_list: D015415:Biomarkers; D035683:MicroRNAs