新突破----MIT教授Robert Langer开发定时释放‘胶囊疫苗’

2017-09-20 佚名 生物探索

麻省理工(MIT)的教授Robert Langer团队设计的新型微粒可以把所有的试剂组合成一次注射,有望让每一个儿童仅需接种一次,然后在特定时间启动助推器释放针对不同疾病的免疫活性物质,从而实现所有疾病的免疫。

导读
麻省理工(MIT)的教授Robert Langer团队设计的新型微粒可以把所有的试剂组合成一次注射,有望让每一个儿童仅需接种一次,然后在特定时间启动助推器释放针对不同疾病的免疫活性物质,从而实现所有疾病的免疫



带过孩子的家长一般都知道,从孩子出生开始,1岁以内几乎每个月都得去一次社区卫生服务中心给宝宝打疫苗。那有没有一种方式,能将所有的疫苗都装进一个体系中,实现所有疾病免疫的方式呢?



作为麻省理工(MIT)的教授,Robert Langer拥有全美最大的实验室(实验室人员超百人),每年1000多万美元的研发经费,其所在实验室以研究靶向药物传递系统和组织工程学而出名,累计发表了1200多篇专业论文,申请过900多项专利,其中400多项已经授权。最近,他的团队开发出一种技术,有望让每一个儿童仅需注射一次,就能实现所有疾病的免疫。

据了解,他们将疫苗储存在微胶囊中,从第一次开始释放初始剂量,然后在特定时间启动助推器释放针对不同疾病的免疫活性物质,从而实现所有疾病的免疫。这种方法已发表在《科学》杂志上,且在小鼠试验中得到了应用,这项技术有望帮助全世界的病人。



我国的免疫接种程序

每一次的儿童免疫接种意味着伴随了眼泪和尖叫声,并且这种频次很高。譬如白喉、破伤风、百日咳、脊髓灰质炎、乙脑灭活疫苗和乙型肝炎、肺炎球菌疫苗……这一方面增大了儿童对打针的恐惧,另一方面也增加了家长奔波的烦恼。

Robert Langer教授团队设计的新型微粒可以把所有的试剂组合成一次注射,小鼠试验表明,在注射后的9天、20天和41天后,它们的含量可以相应被释放,此外数百天后释放的粒子也被开发出来了。不过,这种方法还没有在人体身上进行测试。

Robert Langer教授说:“我们对这项工作很兴奋。这是常规免疫计划上的一个重大突破,我们创建的微小封闭疫苗颗粒库,每一个程序都能在精确、可预测的时间内释放,虽然只是单次注射但实际上里面含有多个内置的助推器。这对世界各地的病人,尤其是发展中国家的病人产生重大影响。”

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    2018-08-10 zxxiang
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    2018-05-13 gracezdd
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