Modelling T-cell immunity against hepatitis C virus with liver organoids in a microfluidic coculture system.

Modelling T-cell immunity against hepatitis C virus with liver organoids in a microfluidic coculture system.
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DOI:
10.1098/rsob.210320
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发表时间:
2022-03
期刊:
影响因子:
5.8
通讯作者:
Ott M
Ott M
中科院分区:
生物学2区
文献类型:
--
作者:
Natarajan V;Simoneau CR;Erickson AL;Meyers NL;Baron JL;Cooper S;McDevitt TC;Ott M

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丙型肝炎病毒 (HCV) 仍然是全球公共卫生挑战,估计有 7100 万人长期感染,新病例激增,而且没有有效的疫苗。由于体内动物模型有限且体外癌细胞模型经常表现出免疫和增殖反应失调,因此需要新的方法来研究人类对 HCV 的免疫反应。在这里,我们开发了 CD8+ T 细胞和成体干细胞肝脏类器官系统,使用微流控芯片将嵌入细胞外基质的 3D 人类肝脏类器官与 HLA 匹配的原代人类 T 细胞悬浮液共培养。然后,我们采用自动相差和免疫荧光成像来监测 T 细胞侵袭和肝脏类器官的形态变化。在存在患者来源的 KLVALGINAV 特异性 CD8+ T 细胞的情况下,用 HCV 非结构蛋白 3 (NS3) (KLVALGINAV) 特异性肽进行脉冲时,该微流体共培养系统支持靶向杀死肝脏类器官。这证明了共培养系统在使用原代人类细胞的体外环境中对 HCV 适应性免疫反应进行分子研究的新潜力。
Hepatitis C virus (HCV) remains a global public health challenge with an estimated 71 million people chronically infected, with surges in new cases and no effective vaccine. New methods are needed to study the human immune response to HCV since in vivo animal models are limited and in vitro cancer cell models often show dysregulated immune and proliferative responses. Here, we developed a CD8+ T cell and adult stem cell liver organoid system using a microfluidic chip to coculture 3D human liver organoids embedded in extracellular matrix with HLA-matched primary human T cells in suspension. We then employed automated phase contrast and immunofluorescence imaging to monitor T cell invasion and morphological changes in the liver organoids. This microfluidic coculture system supports targeted killing of liver organoids when pulsed with a peptide specific for HCV non-structural protein 3 (NS3) (KLVALGINAV) in the presence of patient-derived CD8+ T cells specific for KLVALGINAV. This demonstrates the novel potential of the coculture system to molecularly study adaptive immune responses to HCV in an in vitro setting using primary human cells.
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