Nasal Delivery of a Commensal Pasteurellaceae Species Inhibits Nontypeable Haemophilus influenzae Colonization and Delays Onset of Otitis Media in Mice

Author:

Granland Caitlyn M.1,Scott Naomi M.1,Lauzon-Joset Jean-Francois1,Langereis Jeroen D.23ORCID,de Gier Camilla14,Sutherland Katrien M. J.56,Clark Sharon L.14,Pickering Janessa L.17,Thornton Ruth B.15,Richmond Peter C.14,Strickland Deborah H.17,Kirkham Lea-Ann S.17ORCID

Affiliation:

1. Wesfarmers Centre of Vaccines and Infectious Diseases, Telethon Kids Institute, Perth, Australia

2. Section Pediatric Infectious Diseases, Laboratory of Medical Immunology, Radboud Institute for Molecular Life Sciences, Radboudumc, Nijmegen, The Netherlands

3. Radboud Center for Infectious Diseases, Radboudumc, Nijmegen, The Netherlands

4. Division of Paediatrics, Faculty of Medicine, University of Western Australia, Perth, Australia

5. School of Biomedical Sciences, Faculty of Health and Medical Sciences, University of Western Australia, Perth, Australia

6. School of Life Sciences, College of Medical, Veterinary and Life Sciences, University of Glasgow, Glasgow, United Kingdom

7. Centre for Child Health Research, University of Western Australia, Perth, Australia

Abstract

Nasopharyngeal colonization with nontypeable Haemophilus influenzae (NTHi) is a prerequisite for developing NTHi-associated infections, including otitis media. Therapies that block NTHi colonization may prevent disease development. We previously demonstrated that Haemophilus haemolyticus , a closely related human commensal, can inhibit NTHi colonization and infection of human respiratory epithelium in vitro . We have now assessed whether Muribacter muris (a rodent commensal from the same family) can prevent NTHi colonization and disease in vivo using a murine NTHi otitis media model.

Funder

Telethon Perth Childrens Hospital Fund

Wesfarmers Centre of Vaccines and Infectious Diseases

Department of Health | National Health and Medical Research Council

Publisher

American Society for Microbiology

Subject

Infectious Diseases,Immunology,Microbiology,Parasitology

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