An endogenous nanomineral chaperones luminal antigen and peptidoglycan to intestinal immune cells.
An endogenous nanomineral chaperones luminal antigen and peptidoglycan to intestinal immune cells.
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内源性纳米矿物伴侣将管腔抗原和肽聚糖与肠道免疫细胞结合。
DOI:
10.1038/nnano.2015.19
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发表时间:
2015-04
影响因子:
38.3
通讯作者:
中科院分区:
文献类型:
--
作者:
In humans and other mammals, it is known that calcium and phosphate ions are secreted from the distal small intestine into the lumen. However, why this secretion occurs is unclear. Here, we show that the process leads to the formation of amorphous magnesium-substituted calcium phosphate nanoparticles that trap soluble macromolecules, such as bacterial peptidoglycan and orally-fed protein antigens, in the lumen and transport them to immune cells of the intestinal tissue. The macromolecule-containing nanoparticles utilize epithelial M cells to enter Peyer’s patches - small areas of the intestine concentrated with particle-scavenging immune cells. In wild type mice, intestinal immune cells containing these naturally-formed nanoparticles expressed the immune tolerance-associated molecule ‘programmed death-ligand 1 (PD-L1)’, whereas in NOD1/2 double knock-out mice, which cannot recognize peptidoglycan, PD-L1 was undetected. Our results explain a role for constitutively formed calcium phosphate nanoparticles in the gut lumen and how this helps to shape intestinal immune homeostasis.
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影响因子:
4.8
作者:
Cross, KJ;Huq, NL;Reynolds, EC
通讯作者:
Reynolds, EC
影响因子:
56.9
作者:
Blander, JM;Medzhitov, R
通讯作者:
Medzhitov, R
影响因子:
2
作者:
Jung C;Hugot JP;Barreau F
通讯作者:
Barreau F
DOI:
10.1196/annals.1326.028
发表时间:
2006-01-01
期刊:
INFLAMMATORY BOWEL DISEASE: GENETICS, BARRIER FUNCTION, IMMUNOLOGIC MECHANISMS, AND MICROBIAL PATHWAYS
影响因子:
--
作者:
Gullberg, Elisabet;Soderholm, Johan D.
通讯作者:
Soderholm, Johan D.
影响因子:
2.2
作者:
BRES, EF;HUTCHISON, JL;FRANK, RM
通讯作者:
FRANK, RM