Loss of BID Delays FASL-Induced Cell Death of Mouse Neutrophils and Aggravates DSS-Induced Weight Loss.

Wicki, Simone; Gurzeler, Ursina; Corazza, Nadia; Genitsch, Vera; Wong, Wendy Wei-Lynn; Kaufmann, Thomas (2018). Loss of BID Delays FASL-Induced Cell Death of Mouse Neutrophils and Aggravates DSS-Induced Weight Loss. International journal of molecular sciences, 19(3) Molecular Diversity Preservation International MDPI 10.3390/ijms19030684

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Neutrophils are key players in the early defense against invading pathogens. Due to their potent effector functions, programmed cell death of activated neutrophils has to be tightly controlled; however, its underlying mechanisms remain unclear. Fas ligand (FASL/CD95L) has been shown to induce neutrophil apoptosis, which is accelerated by the processing of the BH3-only protein BH3 interacting domain death agonist (BID) to trigger mitochondrial apoptotic events, and been attributed a regulatory role during viral and bacterial infections. Here, we show that, in accordance with previous works, mouse neutrophils underwent caspase-dependent apoptosis in response to FASL, and that this cell death was significantly delayed upon loss of BID. However, pan-caspase inhibition failed to protect mouse neutrophils from FASL-induced apoptosis and caused a switch to RIPK3-dependent necroptotic cell death. Intriguingly, such a switch was less evident in the absence of BID, particularly under inflammatory conditions. Delayed neutrophil apoptosis has been implicated in several auto-inflammatory diseases, including inflammatory bowel disease. We show that neutrophil and macrophage driven acute dextran sulfate sodium (DSS) induced colitis was slightly more aggravated in BID-deficient mice, based on significantly increased weight loss compared to wild-type controls. Taken together, our data support a central role for FASL > FAS and BID in mouse neutrophil cell death and further underline the anti-inflammatory role of BID.

Item Type:

Journal Article (Original Article)

Division/Institute:

04 Faculty of Medicine > Pre-clinic Human Medicine > Institute of Pharmacology

Graduate School:

Graduate School for Cellular and Biomedical Sciences (GCB)

UniBE Contributor:

Wicki, Simone and Kaufmann, Thomas

Subjects:

600 Technology > 610 Medicine & health

ISSN:

1661-6596

Publisher:

Molecular Diversity Preservation International MDPI

Language:

English

Submitter:

Jana Berger

Date Deposited:

21 Mar 2018 12:18

Last Modified:

26 Oct 2019 08:02

Publisher DOI:

10.3390/ijms19030684

PubMed ID:

29495595

Uncontrolled Keywords:

BID FAS/CD95 RIPK3 apoptosis caspases colitis inflammation mouse model necroptosis neutrophil

BORIS DOI:

10.7892/boris.112598

URI:

https://boris.unibe.ch/id/eprint/112598

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