前沿:新治疗策略或可抑制过敏性哮喘

2018-02-07 王潇雨 健康报医生频道

近日,由中国科学院广州生物医药与健康研究院和广州医科大学联合共建的呼吸疾病国家重点实验室,研发出一种利用腺病毒载体结核疫苗抑制过敏性哮喘的新策略。相关成果论文已在线发表于国际学术期刊《分子医学杂志》上。


近日,由中国科学院广州生物医药与健康研究院和广州医科大学联合共建的呼吸疾病国家重点实验室,研发出一种利用腺病毒载体结核疫苗抑制过敏性哮喘的新策略。相关成果论文已在线发表于国际学术期刊《分子医学杂志》上。

过敏性哮喘影响全球8%~16%人口,症状为喘息、气促、呼吸困难等,严重者可危及生命。当前,治疗策略依赖于糖皮质激素、长效β2—受体激动剂等,但这些方法均为对症治疗,不能从根本上抑制哮喘发作。

过敏性哮喘发病机制极其复杂。既往研究发现,过敏原诱导的Th2反应过度激活是其中关键环节。基于此,多家制药公司和研究机构开发了抗IgE及Th2细胞因子(如IL-4、IL-5、IL-13等)的单克隆抗体,来替代激素疗法。但是,这些疗法依然不能根治哮喘。

约20年前,科学家发现接种卡介苗的人群患哮喘概率较低,并由此开启了以卡介苗预防或治疗哮喘的系列临床前及临床研究。但在10多个临床试验中,卡介苗效果并不理想。人体健康状态下,体内Th1、Th2反应相互制约。卡介苗在历经数百次传代后,某些疫苗株因缺失关键抗原,其诱导Th1反应的能力下降,不能有效抑制Th2过度激活及哮喘发作。



该研究研制出以腺病毒载体携带结核分枝杆菌优势抗原的新型疫苗。该疫苗可诱导显著强于卡介苗的Th1反应,有效降低肺部炎症并抑制哮喘发作。研究团队进一步发现,腺病毒载体结核疫苗调节了肺部免疫稳态,这种调节作用与IL-33/ST2信号通路有关,并依赖于Treg细胞。这些发现为过敏原特异性免疫治疗策略的研究提供了参考。

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    2018-05-28 面包圈

    学习了

    0

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    2018-02-08 秀红

    学习了

    0

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    2018-02-07 有备才能无患

    近日.由中国科学院广州生物医药与健康研究院和广州医科大学联合共建的呼吸疾病国家重点实验室.研发出一种利用腺病毒载体结核疫苗抑制过敏性哮喘的新策略.相关成果论文已在线发表于国际学术期刊<分子医学杂志>上.

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图片来源:medicalxpress.com 过敏症如今变得越来越普遍了,尤其是工业化国家尤为普遍,除了花粉热,过敏性哮喘如今被认为是最普遍的一种过敏症了,近日,刊登在国际杂志Nature Communications上的一项研究论文中,来自莱比锡亥姆霍兹环境研究中心(UFZ)等处的科学家通过研究发现了一种特殊蛋白,该蛋白在气道变应性炎症(allergic airway inflammat

Eur Respir J:ICS治不了的过敏性哮喘 试试这种药

前列腺素DP2受体在严重哮喘的患者体内数量增多,它可以调控免疫反应从而激发呼吸道炎症。2017年8月,发表在《Eur Respir J》的一项由南非、秘鲁、瑞士和美国科学家进行的研究,考察了治疗低剂量吸入性糖皮质激素(ICS)控制不佳的过敏性哮喘,口服前列腺素DP2受体拮抗剂QAW039的最佳剂量。

Nat Med:过敏性哮喘发作的病因

中性粒细胞胞外陷阱以及相关的dsDNA与哮喘有关,可能成为鼻病毒引起的哮喘发作的潜在治疗靶点

J Allergy Clin Immunol:动物所等发现治疗过敏性哮喘新方法

过敏性哮喘已经成为一种严重危害公众健康的慢性疾病。目前,全世界约有一亿哮喘患者。近年来,研究发现辅助性T细胞(Th9)及其分泌的IL-9在过敏性哮喘中发挥非常重要的作用。 中国科学院动物研究所膜生物学国家重点实验室赵勇研究组近些年一系列实验研究发现,丝氨酸-苏氨酸蛋白磷酸酶野生型P53诱导的磷酸酶1(Wip1)在多种免疫细胞发育和炎症反应中具有重要调控作用。最近,研究组与首医佑安医院教授闾军和中

SCI TRANSL MED:抗炎蛋白-2可通过调节性T细胞抑制哮喘!

以上研究结果表明,重组AIP-2可以作为过敏性哮喘和其他炎症性疾病的一个新型的治疗靶点,其中, Tregs细胞在AIP-2抑制哮喘炎症反应发挥了重要作用。