PMID- 32480433 OWN - NLM STAT- MEDLINE DCOM- 20210209 LR - 20210325 IS - 1938-3673 (Electronic) IS - 0741-5400 (Linking) VI - 108 IP - 5 DP - 2020 Nov TI - Human neutrophils activated by TLR8 agonists, with or without IFNgamma, synthesize and release EBI3, but not IL-12, IL-27, IL-35, or IL-39. PG - 1515-1526 LID - 10.1002/JLB.3MA0520-054R [doi] AB - The IL-12 family of cytokines plays crucial functions in innate and adaptive immunity. These cytokines include heterodimers sharing distinct alpha (IL-12A, IL-23A, and IL-27A) with two beta (IL-12B and Epstein-Barr virus induced gene 3 [EBI3]) chains, respectively, IL-12 (IL-12B plus IL-12A) and IL-23 (IL-12B plus IL-23A) sharing IL-12B, IL-27 (EBI3 plus IL-27A), IL-35 (EBI3 plus IL-12A), and IL-39 (EBI3 plus IL-23A) sharing EBI3. In this context, we have recently reported that highly pure neutrophils incubated with TLR8 agonists produce functional IL-23. Previously, we showed that neutrophils incubated with LPS plus IFNgamma for 20 h produce IL-12. Herein, we investigated whether highly pure, TLR8-activated, neutrophils produce EBI3, and in turn IL-27, IL-35, and IL-39, the IL-12 members containing it. We report that neutrophils incubated with TLR8 ligands, TNFalpha and, to a lesser extent, LPS, produce and release remarkable amounts of EBI3, but not IL-27A, consequently excluding the possibility for an IL-27 production. We also report a series of unsuccessful experiments performed to investigate whether neutrophil-derived EBI3 associates with IL-23A to form IL-39. Furthermore, we show that neutrophils incubated with IFNgamma in combination with either TLR8 or TLR4 ligands express/produce neither IL-12, nor IL-35, due to the inability of IFNgamma, contrary to previous findings, to activate IL12A transcription. Even IL-27 was undetectable in supernatants harvested from IFNgamma plus R848-treated neutrophils, although they were found to accumulate IL27A transcripts. Finally, by immunohistochemistry experiments, EBI3-positive neutrophils were found in discrete pathologies only, including diverticulitis, cholecystitis, Gorham disease, and Bartonella Henselae infection, implying a specific role of neutrophil-derived EBI3 in vivo. CI - (c)2020 Society for Leukocyte Biology. FAU - Cassatella, Marco A AU - Cassatella MA AUID- ORCID: 0000-0001-7824-1806 AD - Department of Medicine, Section of General Pathology, University of Verona, Verona, Italy. FAU - Gardiman, Elisa AU - Gardiman E AD - Department of Medicine, Section of General Pathology, University of Verona, Verona, Italy. FAU - Arruda-Silva, Fabio AU - Arruda-Silva F AD - Department of Medicine, Section of General Pathology, University of Verona, Verona, Italy. FAU - Bianchetto-Aguilera, Francisco AU - Bianchetto-Aguilera F AD - Department of Medicine, Section of General Pathology, University of Verona, Verona, Italy. FAU - Gasperini, Sara AU - Gasperini S AD - Department of Medicine, Section of General Pathology, University of Verona, Verona, Italy. FAU - Bugatti, Mattia AU - Bugatti M AD - Department of Molecular and Translational Medicine, Section of Pathology, University of Brescia, Brescia, Italy. FAU - Vermi, William AU - Vermi W AD - Department of Molecular and Translational Medicine, Section of Pathology, University of Brescia, Brescia, Italy. AD - Department of Pathology and Immunology, Washington University School of Medicine, Saint Louis, Missouri, USA. FAU - Larousserie, Frederique AU - Larousserie F AD - Sorbonne Universite, INSERM, CNRS, Centre d'Immunologie et des Maladies Infectieuses, Paris, France. AD - Departement de Pathologie, Hopital Cochin, AP-HP, Universite de Paris, Paris, France. FAU - Devergne, Odile AU - Devergne O AD - Sorbonne Universite, INSERM, CNRS, Centre d'Immunologie et des Maladies Infectieuses, Paris, France. FAU - Tamassia, Nicola AU - Tamassia N AD - Department of Medicine, Section of General Pathology, University of Verona, Verona, Italy. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20200601 PL - England TA - J Leukoc Biol JT - Journal of leukocyte biology JID - 8405628 RN - 0 (EBI3 protein, human) RN - 0 (IFNG protein, human) RN - 0 (Imidazoles) RN - 0 (Interleukins) RN - 0 (MYDGF protein, human) RN - 0 (Minor Histocompatibility Antigens) RN - 0 (TLR8 protein, human) RN - 0 (Toll-Like Receptor 8) RN - 0 (interleukin 39, human) RN - 0 (interleukin-35, human) RN - 187348-17-0 (Interleukin-12) RN - 82115-62-6 (Interferon-gamma) RN - V3DMU7PVXF (resiquimod) SB - IM MH - Animals MH - Humans MH - Imidazoles/*pharmacology MH - Interferon-gamma/immunology MH - Interleukin-12/immunology MH - Interleukins/immunology MH - Mice MH - Minor Histocompatibility Antigens/immunology MH - Neutrophils/*immunology/pathology MH - Toll-Like Receptor 8/*agonists/immunology OTO - NOTNLM OT - EBI3 OT - IL-12 OT - IL-27 OT - IL-35 OT - Neutrophils OT - TLR8 OT - TNFalpha EDAT- 2020/06/02 06:00 MHDA- 2021/02/10 06:00 CRDT- 2020/06/02 06:00 PHST- 2020/02/16 00:00 [received] PHST- 2020/05/08 00:00 [accepted] PHST- 2020/06/02 06:00 [pubmed] PHST- 2021/02/10 06:00 [medline] PHST- 2020/06/02 06:00 [entrez] AID - 10.1002/JLB.3MA0520-054R [doi] PST - ppublish SO - J Leukoc Biol. 2020 Nov;108(5):1515-1526. doi: 10.1002/JLB.3MA0520-054R. Epub 2020 Jun 1.