Journal
COMPARATIVE IMMUNOLOGY MICROBIOLOGY AND INFECTIOUS DISEASES
Volume 49, Issue -, Pages 95-101Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.cimid.2016.10.004
Keywords
Cathelicidin; Proline-arginine-peptide; PR-39; Pig; Intestine; Infectious disease; Neutrophil; Antimicrobial; Immunemodulator
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Funding
- Alberta Livestock Meat Agency Ltd. [2005B008R]
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Proline-Arginine-39 (PR-39) is a small cationic, proline and arginine rich, cathelicidin that plays an important role in the porcine innate immune system. Although PR-39 was first discovered in intestinal cell lysates of pigs, subsequent research has indicated that it is primarily expressed in bone marrow and other lymphoid tissues including the thymus and spleen, as well as in leukocytes. Mature PR-39 cathelicidin has anti-microbial activity against many gram-negative and some gram-positive bacteria. PR-39 is also a bridge between the innate and adaptive immune system with recognized immunomodulatory, wound healing, anti-apoptotic, and pro-angiogenic functions. The purpose of this review is to summarize our current knowledge about the structure, expression, and functions of PR-39 and its potential to promote intestinal homeostasis. This understanding is relevant in the search of alternative therapeutics against diarrheic enterocolitis, a major problem faced by pork producers both in terms of costs and risk of zoonosis. (C) 2016 Elsevier Ltd. All rights reserved.
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