Monitoring functional immune responses with a cytokine release assay: ISS flight hardware design and experimental protocol for whole blood cultures executed under microgravity conditions

使用细胞因子释放试验监测功能性免疫反应:国际空间站飞行硬件设计和微重力条件下全血培养实验方案

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作者:Judith-Irina Buchheim, Matthias Feuerecker, Michele Balsamo, Marco Vukich, Merel Van Walleghem, Kevin Tabury, Roel Quintens, Randy Vermeesen, Bjorn Baselet, Sarah Baatout, Bernd Rattenbacher, Inês Antunes, Thu Jennifer Ngo-Anh, Brian Crucian, Alexander Choukér

Discussion

The resultant data promises to offer a more accurate understanding of the stress-induced neuroendocrine modulation of immunity during space travel providing valuable insights for the scientific community. Furthermore, the versatile nature of the RT suggests its potential utility as a testing platform for various other assays or sample types.

Methods

In a comprehensive test campaign, we assessed the suitability of three materials (silicone, C-Flex, and PVC) for the RT design in terms of biochemical compatibility, chemical stability, and final data quality analysis. Furthermore, we thoroughly examined additional quality criteria such as safety, handling, and the frozen storage of antigens within the RTs. The validation of the proposed crew procedure was conducted during a parabolic flight campaign.

Results

The selected material and procedure proved to be both feasible and secure yielding consistent and dependable data outcomes. This new hardware allows for the stimulation of blood samples on board the ISS, with subsequent analysis still conducted on the ground.

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