Neutrophil Transmigration Analyses for Multiplexed Drug Screening and In Vivo Like Application Testing Using an Organ...

Area of Science:

• Immunology
• Cell Biology
• Biomedical Engineering

Background:

• Neutrophils are key innate immune cells, forming the first defense against pathogens.
• Dysregulated neutrophil activity is implicated in chronic inflammation and autoimmune diseases.
• Understanding neutrophil migration is vital for studying immune responses and disease pathogenesis.

Purpose of the Study:

• To describe and validate two distinct methods for evaluating neutrophil migration.
• To provide tools for quantifying neutrophil movement under physiologically relevant conditions.
• To facilitate research into neutrophil function in health and disease.

Main Methods:

• An in vitro transwell migration assay was employed to assess neutrophil movement across a barrier.
• An ex vivo organ-on-chip model was developed to simulate neutrophil migration under flow conditions.
• Both methods involved quantifying neutrophil migration through human umbilical vein endothelial cells.

Main Results:

• The study successfully detailed two complementary methods for neutrophil migration assessment.
• The organ-on-chip model effectively mimics in vivo conditions, including flow and endothelial cell interactions.
• Quantification of neutrophil migration was achieved using both described techniques.

Conclusions:

• The described in vitro and ex vivo models offer robust approaches to study neutrophil migration.
• These methods can enhance the understanding of neutrophil roles in infection, inflammation, and autoimmune disorders.
• The developed techniques provide valuable tools for preclinical research and drug discovery targeting neutrophil function.