Analysis of Toll-Like Receptors in Human Milk: Detection of Membrane-Bound and Soluble Forms.

Abstract:

:The bioactive and anti-inflammatory role of human milk components has been recognized; active milk components include soluble forms of Toll-like receptors (TLRs). Preterm babies are more susceptible to infections and may succumb to necrotizing enterocolitis (NEC), a gastrointestinal disease which is exacerbated by an excessive inflammatory response after TLR activation. Here, we investigated the presence of Toll-like receptors TLR1/2/4/6 in colostrum and mature milk of women who delivered before (preterm) or after (term) 37 weeks of gestational age, integrating classical immune-related techniques with proteomic LC-MS/MS analysis. We have detected immunoreactivity for TLRs mostly in preterm samples, even for TLR1 and TLR6, until now not described in human milk. We demonstrated the presence of only TLR2 in the milk fat globule membrane, while the immunoreactivity of TLR1/4/6 was ascribed to crossreaction with some interesting milk proteins sharing leucine-rich repeat domains. These results will provide new insights into the definition of the role of TLRs in intestinal immune regulation of the newborns.

journal_name

J Immunol Res

authors

Cattaneo C,Caramaschi A,Uga E,Braghin M,Cosi G,Peila C,Strozzi MC,Sabatini M,Gazzolo D,Manfredi M,Cavaletto M

doi

10.1155/2019/4078671

subject

Has Abstract

pub_date

2019-12-04 00:00:00

pages

4078671

eissn

2314-8861

issn

2314-7156

journal_volume

2019

pub_type

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