Pasteurization of human milk affects the miRNA cargo of EVs decreasing its immunomodulatory activity.

Pasteurization of human milk affects the miRNA cargo of EVs decreasing its immunomodulatory activity.
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DOI:
10.1038/s41598-023-37310-x
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发表时间:
2023-06-21
期刊:
影响因子:
4.6
通讯作者:
Lorca, Graciela L.
Lorca, Graciela L.
中科院分区:
综合性期刊3区
文献类型:
--
作者:
Lamberti, Monica Torrez F.;Parker, Leslie A.;Gonzalez, Claudio F.;Lorca, Graciela L.

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在这份报告中,我们评估了巴氏灭菌(P)过程中的母亲自己的牛奶(EVS)的细胞外囊泡(EV)的miRNA含量的影响,其对先天免疫反应的影响。在巴氏灭菌后,未观察到颗粒大小或数量的差异。然而,在EV膜标志物CD 63和miRNA谱中观察到显著差异。miRNA测序鉴定了33个在MOMEV和PMOMEV之间差异富集的miRNA。这些变化与PMOMEV调节肠Caco 2细胞中IL-8分泌的能力显著降低相关,在存在TNFα的情况下,只有MOMEV能够降低IL-8分泌。虽然来自MOMEV和PMOMEV的EV都能够在THP-1巨噬细胞中诱导致耐受性M2样表型,但用PMOMEV观察到IL-10和RNA传感基因的转录水平显著降低。总之,我们的数据表明,巴氏灭菌的ESTs影响MOMEV的完整性和功能性,降低其EV介导的免疫调节活性。该数据提供了可在优化牛奶加工过程中使用的生物标志物,以保持其生物活性。
In this report, we evaluated the effect of the pasteurization (P) process of mother’s own milk (MOM) on the miRNA content of extracellular vesicles (EVs) and its impact on innate immune responses. Differences in size or particle number were not observed upon pasteurization of MOM (PMOM). However, significant differences were observed in the EV membrane marker CD63 and miRNA profiles. miRNA sequencing identified 33 differentially enriched miRNAs between MOMEV and PMOMEV. These changes correlated with significant decreases in the ability of PMOMEV to modulate IL-8 secretion in intestinal Caco2 cells where only MOMEV were able to decrease IL-8 secretion in presence of TNFα. While EVs from MOMEV and PMOMEV were both able to induce a tolerogenic M2-like phenotype in THP-1 macrophages, a significant decrease in the transcript levels of IL-10 and RNA sensing genes was observed with PMOMEV. Together, our data indicates that pasteurization of MOM impacts the integrity and functionality of MOMEV, decreasing its EVs-mediated immunomodulatory activity. This data provides biomarkers that may be utilized during the optimization of milk processing to preserve its bioactivity.
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