News Release

量子点技术可隐形记录皮肤上的疫苗接种史

Peer-Reviewed Publication

American Association for the Advancement of Science (AAAS)

Quantum Dot Technology Invisibly Records Vaccination History on Skin (1 of 6)

image: The researchers encapsulated their quantum dots in microspheres made of PMMA, a material that improves biocompatibility. This material relates to a paper that appeared in the Dec. 18, 2019, issue of <i>Science Translational Medicine</i>, published by AAAS. The paper, by K.J. McHugh at Koch Institute for Integrative Cancer Research in Cambridge, MA; and colleagues was titled, "Biocompatible near-infrared quantum dots delivered to the skin by microneedle patches record vaccination." view more 

Credit: [Credit: K.J. McHugh <i>et al., Science Translational Medicine</i> (2019)]

一个研究团队用荧光量子点创建了一个微针平台,该平台可接种疫苗并将疫苗接种史隐形编码于皮肤中。这些量子点可在红外中用智能手机检测,并可于接种后在分离的人类皮肤中抵抗(模拟5年阳光的)光致退色;当在大鼠中进行测试时,这些量子点可在长达9个月的时间中仍能被检测到。该平台的易用性可为临床医生提供更可靠的保持准确病历的方式,这在高、低收入的国家中均为挑战。病历保存对于适当的疫苗接种覆盖和其它大量的健康干预措施都是必不可少的。但是,维护或存取病历可能会很困难,尤其是在缺乏中心化数据库的资源低下的环境中,这种情况促成了全世界每年会发生150万例可用疫苗预防的死亡。此外,记录保存方面的问题还加剧了美国和澳大利亚的麻疹等疾病的爆发。为寻求解决方案,Kevin McHugh和同事创建了一个平台,它可记录含生物相容性量子点微粒的疫苗接种情况。他们的方法使用的是一个能以各种模式将微粒输送到皮肤中的微针阵列;肉眼虽然看不见这些微粒,但可用改造的智能手机在红外中检测到它们。在大鼠中,这些量子点可与脊髓灰质炎疫苗一起接种;它们也可于接种后在分离的猪和人的皮肤中被检测到。作者说,通过实现去中心化数据存储和生物传感,该技术在发展中国家可能会很有价值。他们补充说,未来的安全性研究和对制造的改进可帮助他们将想法超越概念验证阶段并朝着实际应用方向发展。

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