Human Polymorphonuclear Neutrophil Phenotypes Generated in vitro


  •   Fernando Marcos Rodríguez

  •   Claudia Leonor Carabajal-Miotti

  •   Susana Graciela Ruiz de Frattari

  •   Adriana Haydee Vargas

  •   Natalio Emilio González-Silva

  •   Ivon Teresa Clara Novak


Background: There are a variety of polymorphonuclear neutrophil phenotypes described in different species and health or disease situations. 

Objective: Study human neutrophil phenotypes generated in vitroMethods: Heparinized human blood samples were collected with ethical consent. Polymorphonuclear neutrophils purification and autologous cultures was performed. Neutrophil stimulation was performed with LPS, fMLP or OVA. Immunofluorescence was applied. 

Results: “Polymorphonuclear neutrophil-antigen presenting cell” profile was generated in vitro, expressing CD80, CD86 and HLA-DR molecules. Immunofluorescence analysis show: CD80 expression, significant differences between CTFT control and CTFT fMLP (p<0.05), CTFT control and CTFT OVA (p<0.0001). CD86 expression, significant differences between CTFT control and CTFT fMLP (p<0.05), CTFT control and CTFT LPS (p<0.05), CTFT control and CTFT OVA (p<0.0001). HLA-DR expression, significant differences between CTFT control and CTFT LPS (p<0.05). About “Polymorphonuclear neutrophil-CD4-CD45RO” profile, analysis show: CD4 expression, significant differences between CTFT control and CTFT fMLP (p<0.05). CD45RO expression, no significant differences. “Polymorphonuclear neutrophil-antigen presenting cell” phenotype, released NETs with CD80, CD86 at 30 minutes: paired control samples (7.4%), stimulated with LPS (12.69%), fMLP (16.67%) and OVA (18.47%). HLA-DR expression in NETs, at 30 minutes, in paired control samples (0%), stimulated with LPS (16.17%). At 17 hs, in paired control samples (0%), with OVA stimulation (4.54%). “Polymorphonuclear neutrophil-CD4-CD45RO” phenotype, released NETs expressing CD4 and C45RO molecules. At 30 minutes, in paired control samples (0%), stimulated with LPS (7.67%), fMLP (6.38%) and OVA (0%).

Conclusions: Molecules expressed by phenotypes can play a relevant role by influencing cellular microenvironment and can be taken into account as possible therapeutic targets.

Keywords: Human neutrophil, NETs, polymorphonuclear neutrophil phenotypes


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How to Cite
Rodríguez, F. M., Carabajal-Miotti, C. L., Ruiz de Frattari, S. G., Vargas, A. H., González-Silva, N. E., & Novak, I. T. C. (2022). Human Polymorphonuclear Neutrophil Phenotypes Generated in vitro . European Journal of Clinical Medicine, 3(4), 21–29.