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Immune response to antigen adsorbed to aluminum hydroxide particles: Effects of co-adsorption of ALF or ALFQ adjuvant to the aluminum-antigen complex.
Journal of Controlled Release ( IF 10.5 ) Pub Date : 2018-02-09 , DOI: 10.1016/j.jconrel.2018.02.006
Zoltan Beck 1 , Oscar B Torres 1 , Gary R Matyas 2 , David E Lanar 3 , Carl R Alving 2
Affiliation  

Aluminum salts have been used as vaccine adjuvants for >50 years, and they are currently present in at least 146 licensed vaccines worldwide. In this study we examined whether adsorption of Army Liposome Formulation (ALF) to an aluminum salt that already has an antigen adsorbed to it might result in improved immune potency of the aluminum-adsorbed antigen. ALF is composed of a family of anionic liposome-based adjuvants, in which the liposomes contain synthetic phospholipids having dimyristoyl fatty acyl groups, cholesterol and monophosphoryl lipid A (MPLA). For certain candidate vaccines, ALF has been added to aluminum hydroxide (AH) gel as a second adjuvant to form ALFA. Here we show that different methods of preparation of ALF changed the physical structures of both ALF and ALFA. Liposomes containing the saponin QS21 (ALFQ) have also been mixed with AH to form ALFQA as an effective combination. In this study, we first adsorbed one of two different antigens to AH, either tetanus toxoid conjugated to 34 copies of a hapten (MorHap), which has been used in a candidate heroin vaccine, or gp140 protein derived from the envelope protein of HIV-1. We then co-adsorbed ALF or ALFQ to the AH to form ALFA or ALFQA. In each case, the immune potency of the antigen adsorbed to AH was greatly increased by co-adsorbing either ALF or ALFQ to the AH. Based on IgG subtype and cytokine analysis by ELISPOT, ALFA induced predominately a Th2-type response and ALFQ and ALFQA each induced more balanced Th1/Th2 responses.

中文翻译:

对吸附在氢氧化铝颗粒上的抗原的免疫反应:ALF或ALFQ佐剂对铝抗原复合物的共吸附作用。

铝盐用作疫苗佐剂已有50多年的历史,目前全球至少有146种许可的疫苗中存在铝盐。在这项研究中,我们检查了陆军脂质体制剂(ALF)吸附到已经吸附了抗原的铝盐上是否可以提高铝吸附抗原的免疫效力。ALF由基于阴离子脂质体的佐剂家族组成,其中脂质体包含具有二豆蔻酰基脂肪酰基,胆固醇和单磷酰基脂质A(MPLA)的合成磷脂。对于某些候选疫苗,已将ALF作为第二种佐剂添加到氢氧化铝(AH)凝胶中以形成ALFA。在这里,我们表明,制备ALF的不同方法改变了ALF和ALFA的物理结构。含有皂苷QS21(ALFQ)的脂质体也已与AH混合以形成ALFQA作为有效组合。在这项研究中,我们首先将两种不同的抗原之一吸附到AH上,要么将破伤风类毒素与34个拷贝的半抗原(MorHap)结合(已用于候选海洛因疫苗中),要么是从HIV-HIV包膜蛋白中提取的gp140蛋白1。然后,我们将ALF或ALFQ共同吸附到AH上,形成ALFA或ALFQA。在每种情况下,通过将AHF或ALFQ共同吸附到AH上,大大提高了吸附到AH上的抗原的免疫力。基于IgG亚型和ELISPOT进行的细胞因子分析,ALFA主要诱导Th2型应答,而ALFQ和ALFQA各自诱导更平衡的Th1 / Th2应答。或已与候选海洛因疫苗中使用的半抗原(MorHap)的34个拷贝缀合的破伤风类毒素或源自HIV-1包膜蛋白的gp140蛋白。然后,我们将ALF或ALFQ共同吸附到AH上,形成ALFA或ALFQA。在每种情况下,通过将AHF或ALFQ共同吸附到AH上,大大提高了吸附到AH上的抗原的免疫力。基于IgG亚型和ELISPOT进行的细胞因子分析,ALFA主要诱导Th2型应答,而ALFQ和ALFQA各自诱导更平衡的Th1 / Th2应答。或已与候选海洛因疫苗中使用的半抗原(MorHap)的34个拷贝缀合的破伤风类毒素或源自HIV-1包膜蛋白的gp140蛋白。然后,我们将ALF或ALFQ共同吸附到AH上,形成ALFA或ALFQA。在每种情况下,通过将AHF或ALFQ共同吸附到AH上,大大提高了吸附到AH上的抗原的免疫力。基于IgG亚型和ELISPOT进行的细胞因子分析,ALFA主要诱导Th2型应答,而ALFQ和ALFQA各自诱导更平衡的Th1 / Th2应答。通过将ALF或ALFQ共吸附到AH,可以大大提高吸附到AH的抗原的免疫力。基于IgG亚型和ELISPOT进行的细胞因子分析,ALFA主要诱导Th2型应答,而ALFQ和ALFQA各自诱导更平衡的Th1 / Th2应答。通过将ALF或ALFQ共吸附到AH,可以大大提高吸附到AH的抗原的免疫力。基于IgG亚型和ELISPOT进行的细胞因子分析,ALFA主要诱导Th2型应答,而ALFQ和ALFQA各自诱导更平衡的Th1 / Th2应答。
更新日期:2018-02-09
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