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Updated: Jan 20, 2026
11:54
Measurement of BK-polyomavirus Non-Coding Control Region Driven Transcriptional Activity Via Flow Cytometry
Published on: July 13, 2019
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Cellular and viral miRNA expression in polyomavirus BK infection
Gang Zeng1, Zijie Wang2, Yuchen Huang1
1Department of Pathology, University of Pittsburgh Medical Center, Pittsburgh, PA, USA.
Summary
BK polyomavirus (BKV) infection in kidney transplants dysregulates microRNAs (miRNAs). This study reveals BKV-miRNAs increase while host miR-10b and miR-30a decrease, impacting proinflammatory cytokines and offering therapeutic targets.
Area of Science:
- Virology
- Molecular Biology
- Immunology
Background:
- BK polyomavirus (BKV) is a significant pathogen in kidney transplant recipients.
- The regulatory mechanisms of BKV-encoded microRNAs (miRNAs) remain poorly understood.
- Understanding these miRNAs is crucial for managing BKV infection post-transplantation.
Purpose of the Study:
- To investigate the changes in small RNA expression in tubular epithelial cells infected with BKV.
- To evaluate the impact of BKV infection on host cellular gene expression.
- To identify potential therapeutic targets for BKV-associated nephropathy.
Main Methods:
- Analysis of small RNA expression in BKV-infected tubular epithelial cells.
- Real-time PCR and RNA-sequencing of renal allograft biopsies.
- Comparative analysis of BKV-miRNA and host miRNA expression profiles.
Main Results:
- BKV-miR-B1-5p and BKV-miR-B1-3p showed a 1000-fold increase, but cell lysis was not prevented.
- Downregulation of host miR-10b and miR-30a was confirmed across multiple platforms.
- BKV infection led to decreased TP53INP2 and increased proinflammatory cytokines (BCL2A1, IL-6, IL8) in biopsies.
Conclusions:
- BKV infection significantly alters miRNA expression profiles in kidney allografts.
- The observed downregulation of host miR-10b and miR-30a suggests their potential role in BKV pathogenesis.
- Targeting miR-10 and miR-30 pathways may offer novel therapeutic strategies for BKV nephropathy.
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