특정 인간과 동물 바이러스를 사용하여 미생물 소스 추적을위한 비용 효율적인 방법

Executive Industry Relevance

Identifying contamination sources in water is critical for public health risk assessment and environmental monitoring. This method provides a cost-effective, high-throughput approach to microbial source tracking using species-specific DNA viruses as reliable indicators. It supports predictive confidence in contamination source attribution and enables scalable screening across diverse water matrices.

Strategic Applications in Biopharma R&D

Early Discovery & Target Validation

• Scientific Value: Enables interrogation of fecal contamination hypotheses through quantification of human adenoviruses, JC polyomaviruses, porcine adenoviruses, and bovine polyomaviruses as specific biomarkers.
• Operational Value: Provides a standardized, reproducible protocol for viral concentration from 10-liter water samples using skimmed milk flocculation and gravity sedimentation.

Screening & Assay Development

• Scientific Value: Generates quantitative viral genome copy data via qPCR with TaqMan probes, enabling sensitive detection down to 1-10 genome copies per test tube for porcine and bovine markers.
• Operational Value: Facilitates high-throughput processing of multiple samples in parallel using 96-well plate formats and automated nucleic acid extraction platforms.

Translational & Preclinical Research

• Scientific Value: Supports disease-relevant system modeling by linking viral markers to contamination sources such as porcine slurries in groundwater, as demonstrated in nitrate-impacted samples.
• Operational Value: Ensures translational continuity from environmental sampling to molecular quantification, with nested PCR and sequencing used for virological data confirmation.

Pipeline & Workflow Integration

The method integrates into environmental microbiology workflows from sample concentration through nucleic acid extraction to quantitative viral measurement, enabling source attribution in water quality assessment pipelines.

• Discovery Biology: Supports hypothesis testing regarding contamination origins by quantifying virus-specific biomarkers associated with human, porcine, or bovine fecal sources.
• Screening: Delivers assay readiness through a one-step concentration protocol that eliminates bottlenecks of traditional two-step methods, allowing simultaneous processing of large sample sets.
• Analytics: Provides quantitative outputs via qPCR standard curves and amplification plots, with acceptable slope values between -3.1 and -3.6 and correlation coefficients of 0.999 for porcine adenovirus quantification.
• Translational Research: Connects environmental detection to source identification through correlation of viral markers with known contamination sources, such as porcine slurry in high-nitrate groundwater.
• Enterprise Reuse: Establishes a reusable, low-cost capability for viral concentration and quantification applicable to bathing waters, seawater, river water, and groundwater across diverse geographical areas.

Operational & Enterprise Impact

• Scientific Value: Enhances predictive confidence in source tracking by using persistent, geographically widespread DNA viruses excreted in feces and/or urine.
• Operational Value: Delivers standardization and reproducibility through a one-step protocol involving acidification, skimmed milk flocculation, gravity sedimentation, and centrifugation at 8,000 × g for 30 minutes at 4°C.
• Strategic Value: Improves go/no-go decisions in environmental monitoring by providing cost-effective, high-sensitivity detection of contamination sources without requiring expensive infrastructure.
• Portfolio Impact: Enables risk-adjusted prioritization of remediation efforts by distinguishing between human, porcine, and bovine contamination sources in water samples.

Implementation Considerations

• Requires expertise in environmental virology, nucleic acid extraction, and quantitative PCR assay design and execution.
• Needs access to centrifugation equipment capable of 8,000 × g, nucleic acid extraction kits (e.g., Key Amp Viral RNA Mini Kit), and qPCR systems with TaqMan probe compatibility.
• Demands standardization of pH adjustment to 3.5 using hydrochloric acid, skimmed milk flocculation (1% v/v), and gravity sedimentation timing (8–10 hours) across teams and sites.
• Involves adaptation considerations for varying water matrices, including pre-sedimentation for high-turbidity samples and conductivity adjustment with sea salts when below 1.5 mS/cm.
• Includes practical limitations such as the need for separate qPCR plates for porcine adenoviruses due to potential probe compatibility issues, even when using similar amplification cycles.

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