视网膜下 AAV 基因转移诱导的外周细胞免疫反应可受到视网膜下相关免疫抑制机制的抑制。

IF 3.9 3区 医学 Q2 BIOTECHNOLOGY & APPLIED MICROBIOLOGY
Julie Vendomèle, Gaëlle Anne Chauveau, Deniz Dalkara, Anne Galy, Sylvain Fisson
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引用次数: 0

摘要

经过二十多年的基础研究和临床前研究,AAV 介导的基因转移已成功应用于治疗遗传性视网膜疾病的临床试验中。尽管眼睛具有免疫优势,但一些患者仍会出现炎症反应,需要使用皮质激素作为辅助治疗,这让我们对视网膜下 AAV 给药的免疫后果产生了疑问。我们首先通过向雌性 C57BL/6 和 rd10 小鼠视网膜下间隙注射不断增加剂量的编码与 HY 雄性抗原融合的报告蛋白的 AAV8,确定了在外周诱导的抗转基因免疫反应的特征。转基因的表达随时间变化通过生物发光成像进行监测,脾脏中的 T 细胞免疫反应则通过 IFNγ ELISpot 和细胞因子多重检测进行分析。我们的数据显示,注射 AAV8 会引起针对转基因产物的促炎性 T 细胞免疫反应,这与转基因表达水平在 2.109 vg 及以上相关。此外,在所有测试的 AAV 剂量下,同时注射来自转基因产物的免疫优势肽和 AAV8 可调节免疫反应。总之,我们的数据表明,在视网膜下腔注射 AAV8 会诱发针对转基因产物的促炎性外周 T 细胞反应,这种反应可通过视网膜下相关免疫抑制(SRAII)机制进行调节。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Peripheral Cellular Immune Responses Induced by Subretinal Adeno-Associated Virus Gene Transfer Can Be Restrained by the Subretinal-Associated Immune Inhibition Mechanism.

After more than two decades of basic research and preclinical studies, adeno-associated virus (AAV)-mediated gene transfer has been tested successfully in clinical trials to treat inherited retinal diseases. Despite the eye's immune-privileged status, some patients display inflammatory events requiring the use of corticoids as an adjunct treatment which led us to question the immune consequences of a subretinal AAV administration. We first characterized anti-transgene immune responses induced in the periphery by injecting increasing doses of AAV8 encoding reporter proteins fused with the HY male antigen into the subretinal space of female C57BL/6 and rd10 mice. Transgene expression was monitored over time with bioluminescence imaging, and T cell immune responses in the spleen were analyzed by IFNγ ELISpot and cytokine multiplex assays. Our data show that AAV8 injections cause pro-inflammatory T cell immune response against the transgene product correlated with the transgene expression level at 2.109 vg and above. In addition, co-injection of immunodominant peptides from the transgene product, along with AAV8, modulates the immune response at all AAV doses tested. Taken together, our data suggest that injection of AAV8 in the subretinal space induces pro-inflammatory peripheral T cell responses to the transgene product that can be modulated by the subretinal-associated immune inhibition mechanism.

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来源期刊
Human gene therapy
Human gene therapy 医学-生物工程与应用微生物
CiteScore
6.50
自引率
4.80%
发文量
131
审稿时长
4-8 weeks
期刊介绍: Human Gene Therapy is the premier, multidisciplinary journal covering all aspects of gene therapy. The Journal publishes in-depth coverage of DNA, RNA, and cell therapies by delivering the latest breakthroughs in research and technologies. Human Gene Therapy provides a central forum for scientific and clinical information, including ethical, legal, regulatory, social, and commercial issues, which enables the advancement and progress of therapeutic procedures leading to improved patient outcomes, and ultimately, to curing diseases.
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