The Pseudomonas aeruginosa lectin LecB modulates intracellular reactive oxygen species production in human neutrophils

Sanchez Klose, Felix, 1989 (author): Chalmers tekniska högskola,Chalmers University of Technology

Dahlstrand Rudin, Agnes (author): Gothenburg University,Göteborgs universitet,Institutionen för odontologi,Institute of Odontology,University of Gothenburg

Bergqvist, Linda (author): Gothenburg University,Göteborgs universitet,Institutionen för medicin, avdelningen för reumatologi och inflammationsforskning,Institute of Medicine, Department of Rheumatology and Inflammation Research,University of Gothenburg

Scheffler, Julia, 1982 (author): Gothenburg University,Göteborgs universitet,Institutionen för medicin, avdelningen för reumatologi och inflammationsforskning,Institute of Medicine, Department of Rheumatology and Inflammation Research,University of Gothenburg

Jönsson, Katarina, 1991 (author): Gothenburg University,Göteborgs universitet,Institutionen för odontologi,Institute of Odontology,University of Gothenburg

Islander, Ulrika, 1975 (author): Gothenburg University,Göteborgs universitet,Institutionen för medicin, avdelningen för reumatologi och inflammationsforskning,Institute of Medicine, Department of Rheumatology and Inflammation Research,University of Gothenburg

Karlsson-Bengtsson, Anna (author): Gothenburg University,Göteborgs universitet,Institutionen för medicin, avdelningen för reumatologi och inflammationsforskning,Institute of Medicine, Department of Rheumatology and Inflammation Research,Chalmers tekniska högskola,Chalmers University of Technology,University of Gothenburg

Bylund, Johan, 1975 (author): Gothenburg University,Göteborgs universitet,Institutionen för odontologi,Institute of Odontology,University of Gothenburg

Venkatakrishnan, Vignesh, 1987 (author): Chalmers tekniska högskola,Chalmers University of Technology

(creator_code:org_t)

Related links:: https://research.cha... (primary) (free); show more...; https://gup.ub.gu.se...; https://doi.org/10.1...; https://research.cha...; show less...

Abstract Subject headings

Pseudomonas aeruginosa is a Gram-negative bacterium and an opportunistic pathogen ubiquitously present throughout nature. LecB, a fucose-, and mannose-binding lectin, is a prominent virulence factor of P. aeruginosa, which can be expressed on the bacterial surface but also be secreted. However, the LecB interaction with human immune cells remains to be characterized. Neutrophils comprise the first line of defense against infections and their production of reactive oxygen species (ROS) and release of extracellular traps (NETs) are critical antimicrobial mechanisms. When profiling the neutrophil glycome we found several glycoconjugates on granule and plasma membranes that could potentially act as LecB receptors. In line with this, we here show that soluble LecB can activate primed neutrophils to produce high levels of intracellular ROS (icROS), an effect that was inhibited by methyl fucoside. On the other hand, soluble LecB inhibits P. aeruginosa-induced icROS production. In support of that, during phagocytosis of wild-type and LecB-deficient P. aeruginosa, bacteria with LecB induced less icROS production as compared with bacteria lacking the lectin. Hence, LecB can either induce or inhibit icROS production in neutrophils depending on the circumstances, demonstrating a novel and potential role for LecB as an immunomodulator of neutrophil functional responses.

MEDICIN OCH HÄLSOVETENSKAP -- Medicinska och farmaceutiska grundvetenskaper -- Immunologi inom det medicinska området (hsv//swe)
MEDICAL AND HEALTH SCIENCES -- Basic Medicine -- Immunology in the medical area (hsv//eng)
MEDICIN OCH HÄLSOVETENSKAP -- Medicinska och farmaceutiska grundvetenskaper -- Mikrobiologi inom det medicinska området (hsv//swe)
MEDICAL AND HEALTH SCIENCES -- Basic Medicine -- Microbiology in the medical area (hsv//eng)

By the author/editor: Sanchez Klose, F ...; Dahlstrand Rudin ...; Bergqvist, Linda; Scheffler, Julia ...; Jönsson, Katarin ...; Islander, Ulrika ...; show more...; Karlsson-Bengtss ...; Bylund, Johan, 1 ...; Venkatakrishnan, ...; show less...

About the subject

MEDICAL AND HEALTH SCIENCES: MEDICAL AND HEAL ...; and Basic Medicine; and Immunology in th ...

MEDICAL AND HEALTH SCIENCES: MEDICAL AND HEAL ...; and Basic Medicine; and Microbiology in ...

By the university: University of Gothenburg; Chalmers University of Technology

Kungliga biblioteket hanterar dina personuppgifter i enlighet med EU:s dataskyddsförordning (2018), GDPR. Läs mer om hur det funkar här.
Så här hanterar KB dina uppgifter vid användning av denna tjänst.