High-Sensitivity Assessment of Phagocytosis by Persistent Association-Based Normalization

Forskningsoutput: TidskriftsbidragArtikel i vetenskaplig tidskrift

Abstract

Phagocytosis is measured as a functional outcome in many research fields, but accurate quantification can be challenging, with no robust method available for cross-laboratory reproducibility. In this study, we identified a simple, measurable parameter, persistent prey-phagocyte association, to use for normalization and dose-response analysis. We apply this in a straightforward analytical method, persistent association-based normalization, in which the multiplicity of prey (MOP) ratio needed to elicit half of the phagocytes to associate persistently (MOP50) is determined first. MOP50 is then applied to normalize for experimental factors, separately analyzing association and internalization. We use reference human phagocyte THP-1 cells with different prey and opsonization conditions to compare the persistent association-based normalization method to standard ways of assessing phagocytosis and find it to perform better, exhibiting increased robustness, sensitivity, and reproducibility. The approach is easily incorporated into most existing phagocytosis assays and allows for reproducible results with high sensitivity.

Detaljer

Författare
Enheter & grupper
Forskningsområden

Ämnesklassifikation (UKÄ) – OBLIGATORISK

  • Immunologi inom det medicinska området
Originalspråkengelska
Sidor (från-till)214-224
Antal sidor11
TidskriftJournal of immunology (Baltimore, Md. : 1950)
Volym206
Utgåva nummer1
Tidigt onlinedatum2020 dec 2
StatusPublished - 2021 jan 1
PublikationskategoriForskning
Peer review utfördJa