Publication: Isolation of human neutrophils from whole blood and buffy coats
Issued Date
2021-09-01
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1940087X
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2-s2.0-85117203866
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Mahidol University
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SCOPUS
Bibliographic Citation
Journal of Visualized Experiments. Vol.2021, No.175 (2021)
Suggested Citation
Alan Y. Hsu, Zhicheng Peng, Hongbo Luo, Fabien Loison Isolation of human neutrophils from whole blood and buffy coats. Journal of Visualized Experiments. Vol.2021, No.175 (2021). doi:10.3791/62837 Retrieved from: https://repository.li.mahidol.ac.th/handle/20.500.14594/76033
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Title
Isolation of human neutrophils from whole blood and buffy coats
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Abstract
Neutrophils (PMNs) are the most abundant leukocytes in human circulation, ranging from 40 to 70% of total blood leukocytes. They are the first cells recruited at the site of inflammation via rapid extravasation through vessels. There, neutrophils perform an array of functions to kill invading pathogens and mediate immune signaling. Freshly purified neutrophils from human blood are the model of choice for study, as no cell line fully replicates PMN functions and biology. However, neutrophils are short-lived, terminally differentiated cells and are highly susceptible to activation in response to physical (temperature, centrifugation speed) and biological (endotoxin, chemo-and cytokines) stimuli. Therefore, it is crucial to follow a standardized, reliable, and fast method to obtain pure and non-activated cells. This protocol presents an updated protocol combining density gradient centrifugation, red blood cell (RBC) sedimentation, and RBC lysis to obtain high PMN purity and minimize cell activation. Furthermore, methods to assess neutrophil isolation quality, viability, and purity are also discussed.