Mesenchymal stromal cells improve survival during sepsis in the absence of heme oxygenase-1: the importance of neutrophils

Hall, Sean R. R.; Tsoyi, Konstantin; Ith, Bonna; Padera Jr., Robert F.; Lederer, James A.; Wang, Zhihong; Liu, Xiaoli; Perrella, Mark A. (2013). Mesenchymal stromal cells improve survival during sepsis in the absence of heme oxygenase-1: the importance of neutrophils. Stem cells, 31(2), pp. 397-407. AlphaMed Press 10.1002/stem.1270

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The use of mesenchymal stromal cells (MSCs) for treatment of bacterial infections, including systemic processes like sepsis, is an evolving field of investigation. This study was designed to investigate the potential use of MSCs, harvested from compact bone, and their interactions with the innate immune system, during polymicrobial sepsis induced by cecal ligation and puncture (CLP). We also wanted to elucidate the role of endogenous heme oxygenase (HO)-1 in MSCs during a systemic bacterial infection. MSCs harvested from the bones of HO-1 deficient (-/-) and wild-type (+/+) mice improved the survival of HO-1(-/-) and HO-1(+/+) recipient mice when administered after the onset of polymicrobial sepsis induced by CLP, compared with the administration of fibroblast control cells. The MSCs, originating from compact bone in mice, enhanced the ability of neutrophils to phagocytize bacteria in vitro and in vivo and to promote bacterial clearance in the peritoneum and blood after CLP. Moreover, after depleting neutrophils in recipient mice, the beneficial effects of MSCs were entirely lost, demonstrating the importance of neutrophils for this MSC response. MSCs also decreased multiple organ injury in susceptible HO-1(-/-) mice, when administered after the onset of sepsis. Taken together, these data demonstrate that the beneficial effects of treatment with MSCs after the onset of polymicrobial sepsis is not dependent on endogenous HO-1 expression, and that neutrophils are crucial for this therapeutic response.

Item Type:	Journal Article (Original Article)
Division/Institute:	04 Faculty of Medicine > Department of Gastro-intestinal, Liver and Lung Disorders (DMLL) > Clinic of Thoracic Surgery 04 Faculty of Medicine > Pre-clinic Human Medicine > BioMedical Research (DBMR) > Forschungsbereich Mu50 > Forschungsgruppe Thoraxchirurgie
UniBE Contributor:	Hall, Sean
Subjects:	500 Science > 570 Life sciences; biology 600 Technology > 610 Medicine & health
ISSN:	1066-5099
Publisher:	AlphaMed Press
Language:	English
Submitter:	Thomas Michael Marti
Date Deposited:	01 May 2014 13:54
Last Modified:	05 Dec 2022 14:29
Publisher DOI:	10.1002/stem.1270
PubMed ID:	23132816
URI:	https://boris.unibe.ch/id/eprint/43109