UK Health Security Agency (UKHSA), Porton Down, Salisbury SP4 0JG, Wiltshire, UK.
Medicines and Healthcare Products Regulatory Agency (MHRA), Blanche Ln, South Mimms, Potters Bar EN6 3QG, Hertfordshire, UK.
Viruses. 2024 Sep 27;16(10):1534. doi: 10.3390/v16101534.
Chikungunya virus (CHIKV) is a mosquito-borne alphavirus causing a debilitating febrile illness with rheumatic disease symptoms of arthralgia and arthritis. Since its spread outside of Africa in 2005, it continues to cause outbreaks and disseminates into new territories. Intervention strategies are urgently required, including vaccination and antiviral approaches. To test efficacy, the use of small animal models is required. Two mouse strains, A129, with a deficiency in their type-I interferon (IFN) receptor, and C57BL/6 are widely used. A direct comparison of these strains alongside the wild-type parental strain of the A129 mice, 129Sv/Ev, was undertaken to assess clinical disease progression, viral loads in key tissues, histological changes and levels of sera biomarkers. Our results confirm the severe disease course in A129 mice which was not observed in the parental 129Sv/Ev strain. Of the two wild-type strains, viral loads were higher in 129Sv/Ev mice compared to C57BL/6 counterparts. Our results have established these models and parameters for the future testing of vaccines and antiviral approaches.
基孔肯雅热病毒(CHIKV)是一种虫媒黄病毒,可引起关节痛和关节炎等风湿性疾病症状的衰弱性发热病。自 2005 年在非洲以外地区传播以来,它继续爆发并传播到新的地区。迫切需要干预策略,包括疫苗接种和抗病毒方法。为了测试疗效,需要使用小动物模型。两种小鼠品系,A129,其 I 型干扰素(IFN)受体缺失,以及 C57BL/6,被广泛使用。对这些品系与 A129 小鼠的野生型亲代品系 129Sv/Ev 进行了直接比较,以评估临床疾病进展、关键组织中的病毒载量、组织学变化和血清生物标志物水平。我们的结果证实了 A129 小鼠的严重疾病过程,而在亲代 129Sv/Ev 品系中没有观察到这种情况。在两种野生型品系中,129Sv/Ev 小鼠的病毒载量高于 C57BL/6 对应品系。我们的结果为未来疫苗和抗病毒方法的测试建立了这些模型和参数。