Publication Date:
2006-08-26
Description:
The mammalian intestine harbors complex societies of beneficial bacteria that are maintained in the lumen with minimal penetration of mucosal surfaces. Microbial colonization of germ-free mice triggers epithelial expression of RegIIIgamma, a secreted C-type lectin. RegIIIgamma binds intestinal bacteria but lacks the complement recruitment domains present in other microbe-binding mammalian C-type lectins. We show that RegIIIgamma and its human counterpart, HIP/PAP, are directly antimicrobial proteins that bind their bacterial targets via interactions with peptidoglycan carbohydrate. We propose that these proteins represent an evolutionarily primitive form of lectin-mediated innate immunity, and that they reveal intestinal strategies for maintaining symbiotic host-microbial relationships.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2716667/" target="_blank"〉〈img src="https://static.pubmed.gov/portal/portal3rc.fcgi/4089621/img/3977009" border="0"〉〈/a〉 〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2716667/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Cash, Heather L -- Whitham, Cecilia V -- Behrendt, Cassie L -- Hooper, Lora V -- R01 DK070855/DK/NIDDK NIH HHS/ -- R01 DK070855-01/DK/NIDDK NIH HHS/ -- T32-AI007520/AI/NIAID NIH HHS/ -- New York, N.Y. -- Science. 2006 Aug 25;313(5790):1126-30.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Center for Immunology, University of Texas Southwestern Medical Center at Dallas, 5323 Harry Hines Boulevard, Dallas, TX 75390, USA. Lora.Hooper@UTSouthwestern.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/16931762" target="_blank"〉PubMed〈/a〉
Keywords:
Animals
;
Antigens, Neoplasm/*metabolism/pharmacology
;
Bacteria/growth & development/*immunology
;
Biomarkers, Tumor/*metabolism/pharmacology
;
Chitin/metabolism
;
Colony Count, Microbial
;
Germ-Free Life
;
Gram-Positive Bacteria/immunology/metabolism
;
Homeostasis
;
Humans
;
*Immunity, Innate
;
Immunity, Mucosal
;
Intestine, Small/*microbiology
;
Lectins, C-Type/*metabolism
;
Ligands
;
Listeria monocytogenes/ultrastructure
;
Mice
;
Oligonucleotide Array Sequence Analysis
;
Paneth Cells/immunology/*metabolism
;
Peptidoglycan/chemistry/*metabolism
;
Protein Structure, Tertiary
;
Proteins/genetics/*metabolism/pharmacology
;
Recombinant Proteins/metabolism
;
Secretory Vesicles/metabolism
;
Symbiosis
Print ISSN:
0036-8075
Electronic ISSN:
1095-9203
Topics:
Biology
,
Chemistry and Pharmacology
,
Computer Science
,
Medicine
,
Natural Sciences in General
,
Physics
