Peptidome comparison on the immune regulation effects of different casein fractions in a cyclophosphamide mouse model

Autor: Junpeng Zhang, Xiaomeng Wu, Jinghong Zhao, Xutong Ma, M. Safian Murad, Guangqing Mu
Jazyk: angličtina
Rok vydání: 2024
Předmět:
Zdroj: Journal of Dairy Science, Vol 107, Iss 1, Pp 40-61 (2024)
Druh dokumentu: article
ISSN: 0022-0302
DOI: 10.3168/jds.2023-23761
Popis: ABSTRACT: The protein composition of human milk plays a crucial role in infant formula milk powder formulation. Notably, significant differences exist between bovine casein and human milk casein. Previous studies have shown that casein hydrolysates could enhance immune function; however, gastrointestinal dyspepsia in infants affects the type and function of peptides. Therefore, the present study used peptidomics to sequence and analyze hydrolyzed peptides from different casein fractions. Additionally, animal experiments were conducted to assess the functionality of these casein fractions and elucidate their differences. The results revealed variations in peptide composition among the different casein fractions of formula milk powder. Interestingly, milk powder formulated with both β- and κ-casein (BK) exhibited significant enrichment of peptides related to the immune system. Moreover, the BK group significantly alleviated immune organ damage in cyclophosphamide-treated mice and regulated serum levels of pro-inflammatory and anti-inflammatory factors. Furthermore, feeding different casein fractions influenced the intestinal microflora of cyclophosphamide-treated mice, with the BK group mitigating the changes caused by cyclophosphamide. In conclusion, the findings suggest that BK formula in milk powder has the potential to positively enhance immunity. This study provides a robust theoretical basis for human-emulsified formula milk powder development.
Databáze: Directory of Open Access Journals