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Yokoyama CC, Baldridge MT, Leung DW, Zhao G, Desai C, Liu TC, Diaz-Ochoa VE, Huynh JP, Kimmey JM, Sennott EL, Hole CR, Idol RA, Park S, Storek KM, Wang C, Hwang S, Viehmann Milam A, Chen E, Kerrinnes T, Starnbach MN, Handley SA, Mysorekar IU, Allen PM, Monack DM, Dinauer MC, Doering TL, Tsolis RM, Dworkin JE, Stallings CL, Amarasinghe GK, Micchelli CA, Virgin HW. LysMD3 is a type II membrane protein without an in vivo role in the response to a range of pathogens. J Biol Chem 2018; 293:6022-6038. [PMID: 29496999 PMCID: PMC5912457 DOI: 10.1074/jbc.ra117.001246] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2017] [Revised: 01/31/2018] [Indexed: 12/22/2022] Open
Abstract
Germline-encoded receptors recognizing common pathogen-associated molecular patterns are a central element of the innate immune system and play an important role in shaping the host response to infection. Many of the innate immune molecules central to these signaling pathways are evolutionarily conserved. LysMD3 is a novel molecule containing a putative peptidoglycan-binding domain that has orthologs in humans, mice, zebrafish, flies, and worms. We found that the lysin motif (LysM) of LysMD3 is likely related to a previously described peptidoglycan-binding LysM found in bacteria. Mouse LysMD3 is a type II integral membrane protein that co-localizes with GM130+ structures, consistent with localization to the Golgi apparatus. We describe here two lines of mLysMD3-deficient mice for in vivo characterization of mLysMD3 function. We found that mLysMD3-deficient mice were born at Mendelian ratios and had no obvious pathological abnormalities. They also exhibited no obvious immune response deficiencies in a number of models of infection and inflammation. mLysMD3-deficient mice exhibited no signs of intestinal dysbiosis by 16S analysis or alterations in intestinal gene expression by RNA sequencing. We conclude that mLysMD3 contains a LysM with cytoplasmic orientation, but we were unable to define a physiological role for the molecule in vivo.
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Affiliation(s)
| | | | - Daisy W Leung
- From the Departments of Pathology and Immunology and
| | - Guoyan Zhao
- From the Departments of Pathology and Immunology and
| | - Chandni Desai
- From the Departments of Pathology and Immunology and
| | - Ta-Chiang Liu
- From the Departments of Pathology and Immunology and
| | - Vladimir E Diaz-Ochoa
- the Department of Medical Microbiology and Immunology, University of California, Davis, California 95161
| | | | | | - Erica L Sennott
- the Department of Microbiology and Immunobiology, Harvard Medical School, Boston, Massachusetts 02115
| | | | | | - Sunmin Park
- From the Departments of Pathology and Immunology and
| | | | | | - Seungmin Hwang
- the Department of Pathology, University of Chicago, Chicago, Illinois 60637
| | | | - Eric Chen
- the Department of Molecular and Cell Biology, University of California, Berkeley, Berkeley, California 94720
| | - Tobias Kerrinnes
- the Department of Medical Microbiology and Immunology, University of California, Davis, California 95161
| | - Michael N Starnbach
- the Department of Microbiology and Immunobiology, Harvard Medical School, Boston, Massachusetts 02115
| | | | - Indira U Mysorekar
- From the Departments of Pathology and Immunology and
- Obstetrics and Gynecology, and
| | - Paul M Allen
- From the Departments of Pathology and Immunology and
| | - Denise M Monack
- the Department of Microbiology and Immunology, Stanford University, Stanford, California 94305
| | | | | | - Renee M Tsolis
- the Department of Medical Microbiology and Immunology, University of California, Davis, California 95161
| | - Jonathan E Dworkin
- the Department of Microbiology and Immunology, College of Physicians and Surgeons, Columbia University, New York, New York 10032, and
| | | | | | - Craig A Micchelli
- Developmental Biology, Washington University School of Medicine, Saint Louis, Missouri 63110
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