Article (Scientific journals)
Protective effects of recombinant lactoferrin with different iron saturations on enteritis injury in young mice.
Fan, L L; Yao, Qianqian; Li, H Y et al.
2022In Journal of Dairy Science, 105 (6), p. 4791 - 4803
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Keywords :
enteritis; iron saturation; lactoferrin; lipopolysaccharides; Lipopolysaccharides; Recombinant Proteins; Iron; Lactoferrin; Animals; Inflammation/veterinary; Mice; Recombinant Proteins/pharmacology; Enteritis/prevention & control; Enteritis/veterinary; Iron/metabolism; Lactoferrin/pharmacology; Humans; Inflammation; Rodent Diseases; Food Science; Animal Science and Zoology; Genetics
Abstract :
[en] Infant intestinal development is immature and, thus, is vulnerable to bacterial and viral infections, which damage intestinal development and even induce acute enteritis. Numerous studies have investigated that lactoferrin (LF) has protective effects on the intestine and may play a role in preventing intestinal inflammation in infants. Lactoferrin is divided into 2 types, namely apo-LF and holo-LF, depending on the degree of iron saturation, which may affect its bioactivities. However, the role of LF iron saturation in protecting infant intestinal inflammation has not been clearly clarified. Therefore, in this study, young mice models with intestinal damage induced by lipopolysaccharides (LPS) in vivo and primary intestinal epithelial cells in vitro were constructed to enteritis injury in infants for investigation. The apo-LF and holo-LF were subsequently applied to the mouse models to investigate and compare their levels of protection in the intestinal inflammatory injury, as well as to identify which LF was most active. Moreover, the specific mechanism of the LF with optimal iron saturation was further investigated through Western blot assay. Results demonstrated that disease activity index, shortened length of colon tissue, and histopathological score were significantly decreased in the apo-LF group compared with those of the LPS group and the holo-LF group. In the apo-LF group, the concentration of LPS in the intestinal tract and the number of gram-negative bacteria colonies decreased significantly and the expression levels of proinflammatory factors in the colon tissue were downregulated, in comparison with those in the LPS group. The findings of this study thus verify that apo-LF can significantly alleviate enteritis injury caused by LPS, through regulating the PPAR-γ/PFKFB3/NF-κB inflammatory pathway.
Disciplines :
Food science
Author, co-author :
Fan, L L ;  Key Laboratory of Quality & Safety Control for Milk and Dairy Products of Ministry of Agriculture and Rural Affairs, Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing 100193, P. R. China
Yao, Qianqian   ;  Université de Liège - ULiège > TERRA Research Centre ; Key Laboratory of Quality & Safety Control for Milk and Dairy Products of Ministry of Agriculture and Rural Affairs, Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing 100193, P. R. China
 These authors have contributed equally to this work.
Critical editor :
Li, H Y;  Key Laboratory of Quality & Safety Control for Milk and Dairy Products of Ministry of Agriculture and Rural Affairs, Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing 100193, P. R. China. Electronic address: thufit2012@126.com
Zheng, N ;  Key Laboratory of Quality & Safety Control for Milk and Dairy Products of Ministry of Agriculture and Rural Affairs, Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing 100193, P. R. China. Electronic address: zhengnan_1980@126.com
Other collaborator :
Wu, H M ;  Key Laboratory of Quality & Safety Control for Milk and Dairy Products of Ministry of Agriculture and Rural Affairs, Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing 100193, P. R. China
Wen, F;  Key Laboratory of Quality & Safety Control for Milk and Dairy Products of Ministry of Agriculture and Rural Affairs, Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing 100193, P. R. China
Wang, J Q ;  Key Laboratory of Quality & Safety Control for Milk and Dairy Products of Ministry of Agriculture and Rural Affairs, Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing 100193, P. R. China
Language :
English
Title :
Protective effects of recombinant lactoferrin with different iron saturations on enteritis injury in young mice.
Publication date :
June 2022
Journal title :
Journal of Dairy Science
ISSN :
0022-0302
eISSN :
1525-3198
Publisher :
Elsevier Inc., United States
Volume :
105
Issue :
6
Pages :
4791 - 4803
Peer reviewed :
Peer Reviewed verified by ORBi
Funding text :
We are grateful for support from 2 key laboratories: the Key Laboratory of Quality and Safety Control for Milk and Dairy Products, and the Laboratory of Quality and Safety Risk Assessment for Dairy Products, Ministry of Agriculture and Rural Affairs, China. We are grateful for support from the Scientific Research Project for Major Achievements of the Agricultural Science and Technology Innovation Program (ASTIP; Beijing, China; no. CAAS-ZDXT2019004), the Ministry of Modern Agro-Industry Technology Research System of China (CARS-36), and the Agricultural Science and Technology Innovation Program (ASTIP-IAS12). The authors have not stated any conflicts of interest.
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