Dpo-pcr primer pair for detecting bovine coronavirus and application thereof

By designing DPO-PCR primer pairs and utilizing flexible and specific amplification technology of polyxanthine linker regions, the problems of long detection cycles, poor specificity, and cumbersome annealing temperature optimization in bovine coronavirus detection have been solved, achieving high-sensitivity and low-cost early diagnosis and monitoring.

CN122405903APending Publication Date: 2026-07-17INST OF SPECIAL ANIMAL & PLANT SCI OF CAAS
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
INST OF SPECIAL ANIMAL & PLANT SCI OF CAAS
Filing Date
2026-05-25
Publication Date
2026-07-17

AI Technical Summary

Technical Problem

Existing bovine coronavirus detection methods are time-consuming, have poor specificity, require complex annealing temperature optimization, and are poorly applicable to grassroots settings, making it difficult to achieve early diagnosis and efficient monitoring.

Method used

A pair of DPO-PCR primers targeting the bovine coronavirus N gene was designed. Utilizing the flexible linker region of the poly-xanthine (poly-I) linker, the amplification specificity is high, the annealing temperature adaptability is wide, and the operation steps are simplified, making it suitable for primary veterinary laboratories.

Benefits of technology

It enables the detection of bovine coronavirus that is simple to operate, accurate, and highly sensitive, with a detection limit of 7.55 × 10³ copies/μL. It is applicable to a variety of samples, reduces costs, and is suitable for monitoring and diagnosis in farms and primary laboratories.

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Abstract

本发明公开了一种检测牛冠状病毒的DPO‑PCR引物对及其应用。针对现有技术中牛冠状病毒病原检测周期长、特异性差、灵敏度低的问题,本发明以牛冠状病毒N基因的保守序列为检测靶标,选取牛冠状病毒N基因的特异保守区域,设计了一对DPO‑PCR引物对。本发明对所设计的DPO‑PCR引物对进行了特异性、灵敏度和退火温度适应性验证,特异性验证结果表明,仅牛冠状病毒出现228bp的特异条带,其他病毒均无扩增条带。灵敏度验证结果表明,该方法的最低检测限可达7.55×103copies / μL;退火温度适应性验证结果表明,在45℃‑65℃的退火温度范围内,该方法均可特异性扩增出228bp的目的条带,对退火温度不敏感。本发明的DPO‑PCR检测方法操作简便、结果准确,可实现牛冠状病毒的早期诊断和病原监测。
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