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ISCOMATRIX adjuvant: an adjuvant suitable for use in anticancer vaccines

机译:ISCOMATRIX佐剂:适用于抗癌疫苗的佐剂

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Human Papillomavirus type 16 (HPV16) E6 and E7 oncoproteins are associated with cervical cancer development and progression and can therefore be used as target antigens for cancer immunotherapy. In this study we evaluated the immunogenicity in mice, of different vaccine formulations using recombinant HPV16 derived E6E7 or E7GST fusion proteins. When co-administered with ISCOMATRIX adjuvant, these E6E7 proteins consistently induced E7 specific CTL, in vivo tumor protection, antibody and DTH responses. ISCOMATRIX adjuvant has been developed for use in the formulation of novel human vaccines and has been evaluated for safety and toxicity in human trials. A formulation containing aluminum hydroxide (Al(OH)3) gave a lesser degree of E7 specific antibody, and no local E7 specific CTL response but similar DTH and tumor protection. These findings demonstrate the potential of ISCOMATRIX adjuvant to stimulate both cellular and humoral immune responses to endogenously processed target antigens, and hence is the preferred adjuvant when CTL responses are desirable.
机译:16型人乳头瘤病毒(HPV16)E6和E7癌蛋白与子宫颈癌的发生和发展有关,因此可以用作癌症免疫疗法的靶抗原。在这项研究中,我们使用重组HPV16衍生的E6E7或E7GST融合蛋白评估了不同疫苗制剂在小鼠中的免疫原性。当与ISCOMATRIX佐剂共同给药时,这些E6E7蛋白始终诱导E7特异性CTL,体内肿瘤保护,抗体和DTH反应。已开发出ISCOMATRIX佐剂用于配制新型人类疫苗,并已在人类试验中进行了安全性和毒性评估。含有氢氧化铝(Al(OH)3)的制剂产生的E7特异性抗体的程度较低,没有局部的E7特异性CTL反应,但具有相似的DTH和肿瘤保护作用。这些发现证明了ISCOMATRIX佐剂具有刺激针对内源性加工的靶抗原的细胞和体液免疫应答的潜力,因此当需要CTL应答时是优选的佐剂。

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