
bioRxiv (Cold Spring Harbor Laboratory), Journal Year: 2024, Volume and Issue: unknown
Published: Oct. 30, 2024
Abstract JC polyomavirus (JCPyV) is a ubiquitous pathogen causing progressive multifocal leukoencephalopathy (PML) in immunocompromised individuals. Polyomaviruses (PyVs) utilize complex transcriptional regulation mechanisms to express diverse mRNAs from their compact, double-stranded circular DNA genomes. A recent study employed next-generation sequencing (NGS) provide detailed transcriptome atlas of PyVs, including BK and simian virus 40. However, information regarding the JCPyV remains limited. Here, we conducted comprehensive analysis combining short-read long-read NGS methods unveil JCPyV. RNA isolated IMR-32 293 cells transfected with genome was analyzed by NGS, leading discovery 39 novel viral transcripts addition 12 previously annotated ones. Among these transcripts, identified characteristic wraparound conserved across which are constructed long primary generated through continuous, multiple rounds transcription genome. These included both late harboring leader-to-leader repeated sequences SuperT containing LxCxE motifs. Notably, transcript, were also detected brain tissues PML patients. Collectively, this significantly expands our understanding transcriptome, revealing expression lesions. findings valuable insights into molecular basis gene pathogenesis, potentially facilitating development effective countermeasures against PML. Author Summary first 1971 tissue patient (PML), life-threatening neurological disease. Despite over 50 years since pathogen’s identification, prognosis for extremely poor due lack therapeutics. Elucidating can expand providing targets therapeutic strategies. combination three technologies explore creating We ones cultured arise Wraparound characterized presence tandem repeats approximately 100 nucleotides. Our provides new expression, contributing
Language: Английский