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Boll EJ, Lopez DV, Terne M, Hessing S, Parschat K, Jensen SR. Human milk oligosaccharides differentially support gut barrier integrity and enhance Th1 and Th17 cell effector responses in vitro. Front Immunol 2024; 15:1359499. [PMID: 38510254 PMCID: PMC10950922 DOI: 10.3389/fimmu.2024.1359499] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2023] [Accepted: 02/15/2024] [Indexed: 03/22/2024] Open
Abstract
Human milk oligosaccharides (HMOs) can modulate the intestinal barrier and regulate immune cells to favor the maturation of the infant intestinal tract and immune system, but the precise functions of individual HMOs are unclear. To determine the structure-dependent effects of individual HMOs (representing different structural classes) on the intestinal epithelium as well as innate and adaptive immune cells, we assessed fucosylated (2'FL and 3FL), sialylated (3'SL and 6'SL) and neutral non-fucosylated (LNT and LNT2) HMOs for their ability to support intestinal barrier integrity, to stimulate the secretion of chemokines from intestinal epithelial cells, and to modulate cytokine release from LPS-activated dendritic cells (DCs), M1 macrophages (MØs), and co-cultures with naïve CD4+ T cells. The fucosylated and neutral non-fucosylated HMOs increased barrier integrity and protected the barrier following an inflammatory insult but exerted minimal immunomodulatory activity. The sialylated HMOs enhanced the secretion of CXCL10, CCL20 and CXCL8 from intestinal epithelial cells, promoted the secretion of several cytokines (including IL-10, IL-12p70 and IL-23) from LPS-activated DCs and M1 MØs, and increased the secretion of IFN-γ and IL-17A from CD4+ T cells primed by LPS-activated DCs and MØs while reducing the secretion of IL-13. Thus, 3'SL and 6'SL supported Th1 and Th17 responses while reducing Th2 responses. Collectively, our data show that HMOs exert structure-dependent effects on the intestinal epithelium and possess immunomodulatory properties that confer benefits to infants and possibly also later in life.
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Affiliation(s)
| | | | - Mandy Terne
- Chr. Hansen A/S, Applied HMOs, Hoersholm, Denmark
| | - Sara Hessing
- Chr. Hansen A/S, Applied HMOs, Hoersholm, Denmark
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Li J, Wei Y, Liu C, Guo X, Liu Z, Zhang L, Bao S, Wu X, Wang X, Zhang J, Dong W. 2'-Fucosyllactose restores the intestinal mucosal barrier in ulcerative colitis by inhibiting STAT3 palmitoylation and phosphorylation. Clin Nutr 2024; 43:380-394. [PMID: 38150914 DOI: 10.1016/j.clnu.2023.12.011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2023] [Revised: 12/10/2023] [Accepted: 12/13/2023] [Indexed: 12/29/2023]
Abstract
BACKGROUND & AIMS 2'-Fucosyllactose (2'-FL), the primary constituent of human milk oligosaccharides, has been identified as a potential regulator of inflammation in inflammatory bowel disease. Despite this recognition, the specific mechanisms through which 2'-FL alleviates ulcerative colitis (UC) remain ambiguous. This study seeks to investigate the potential anti-inflammatory properties of 2'-FL concerning intestinal inflammation and uncover the associated mechanisms. METHODS C57BL/6J mice were orally administered a daily dose of 500 mg/kg 2'-FL for 11 consecutive days, followed by the induction of colitis using 3 % (wt/vol) dextran sulfate sodium (DSS) for the final 6 days. Subsequently, a comprehensive range of techniques, including an Acyl-biotin exchange assay, fluorescein-isothiocyanate-labeled dextran assay, histopathology, ELISA, quantitative real-time PCR, Western blot, immunofluorescence staining, immunohistochemistry staining, Alcian blue-periodic acid schiff staining, TdT-mediated dUTP nick end labeling, transmission electron microscopy, iTRAQ quantitative proteomics, bioinformatics analysis, and the generation of signal transducer and activator of transcription 3 (STAT3) knockout mice, were employed to explore the relevant molecular mechanisms. RESULTS Administration of 2'-FL significantly ameliorated DSS-induced colitis in mice and enhanced the integrity of the intestinal mucosal barrier. 2'-FL downregulated the phosphorylation of STAT3 and inhibited STAT3-related signaling pathways in colon tissues, which, in turn, reduced inflammatory responses. Interestingly, knockdown of STAT3 attenuated the protective effects of 2'-FL, highlighting that 2'-FL-mediated inflammatory attenuation is dependent on STAT3 expression. Additionally, 2'-FL could influence STAT3 activation by modulating the palmitoylation and depalmitoylation of STAT3. CONCLUSIONS 2'-FL promotes the recovery of the intestinal mucosal barrier and suppresses inflammation in ulcerative colitis by inhibiting the palmitoylation and phosphorylation of STAT3.
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Affiliation(s)
- Jinting Li
- Department of Gastroenterology, Renmin Hospital of Wuhan University, Wuhan, Hubei Province, China; Key Laboratory of Hubei Province for Digestive System Disease, Wuhan, Hubei Province, China; Central Laboratory, Renmin Hospital of Wuhan University, Wuhan, Hubei Province, China
| | - Yuping Wei
- Department of Gastroenterology, Renmin Hospital of Wuhan University, Wuhan, Hubei Province, China; Key Laboratory of Hubei Province for Digestive System Disease, Wuhan, Hubei Province, China; Central Laboratory, Renmin Hospital of Wuhan University, Wuhan, Hubei Province, China
| | - Chuan Liu
- Department of Gastroenterology, Renmin Hospital of Wuhan University, Wuhan, Hubei Province, China; Key Laboratory of Hubei Province for Digestive System Disease, Wuhan, Hubei Province, China; Central Laboratory, Renmin Hospital of Wuhan University, Wuhan, Hubei Province, China
| | - Xingzhou Guo
- Department of Gastroenterology, Renmin Hospital of Wuhan University, Wuhan, Hubei Province, China; Key Laboratory of Hubei Province for Digestive System Disease, Wuhan, Hubei Province, China; Central Laboratory, Renmin Hospital of Wuhan University, Wuhan, Hubei Province, China
| | - Zhengru Liu
- Key Laboratory of Hubei Province for Digestive System Disease, Wuhan, Hubei Province, China; Department of Gastroenterology, The First Affiliated Hospital of Kunming Medical University, Kunming, China
| | - Luyun Zhang
- Department of Gastroenterology, Renmin Hospital of Wuhan University, Wuhan, Hubei Province, China; Key Laboratory of Hubei Province for Digestive System Disease, Wuhan, Hubei Province, China; Central Laboratory, Renmin Hospital of Wuhan University, Wuhan, Hubei Province, China
| | - Shenglan Bao
- Department of Gastroenterology, Renmin Hospital of Wuhan University, Wuhan, Hubei Province, China; Key Laboratory of Hubei Province for Digestive System Disease, Wuhan, Hubei Province, China; Central Laboratory, Renmin Hospital of Wuhan University, Wuhan, Hubei Province, China
| | - Xiaohan Wu
- Key Laboratory of Hubei Province for Digestive System Disease, Wuhan, Hubei Province, China; Department of Gastroenterology, Shengjing Hospital of China Medical University, Shenyang, China
| | - Xiaoli Wang
- Department of Plastic Surgery, Renmin Hospital of Wuhan University, Wuhan, Hubei Province, China
| | - Jixiang Zhang
- Department of Gastroenterology, Renmin Hospital of Wuhan University, Wuhan, Hubei Province, China.
| | - Weiguo Dong
- Department of Gastroenterology, Renmin Hospital of Wuhan University, Wuhan, Hubei Province, China.
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Sun W, Tao L, Qian C, Xue P, Tong X, Yang L, Lu F, Wan H, Tao Y. Human milk oligosaccharides and the association with microbiota in colostrum: a pilot study. Arch Microbiol 2024; 206:58. [PMID: 38191870 PMCID: PMC10774193 DOI: 10.1007/s00203-023-03787-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2023] [Revised: 10/25/2023] [Accepted: 12/04/2023] [Indexed: 01/10/2024]
Abstract
HMOs (Human milk oligosaccharide) has an impact on maternal and infant health. Colostrum samples of 70 breastfeeding women in China were collected and recorded clinical characteristics. The major oligosaccharides and microbiota were quantitated in colostrum. The concentration of fucosylated HMOs in primipara was higher than that of multipara (p = 0.030). The concentration of N-acetylated HMOs in vaginal delivery milk was less than that of cesarean (p = 0.038). Non-fucosylated HMOs of breastfeeding women were less than that of breast pump (p = 0.038). Meanwhile, the concentration of LNT was positively correlated with Lactobacillus (r = 0.250, p = 0.037). DS-LNT was negatively correlated with Staphylococcus (r = - 0.240, p = 0.045). There was a positive correlation of Streptococcus with LNFP II (r = 0.314, p = 0.011) and 3-SL (r = 0.322, p = 0.009). In addition, there was a negative correlation between 2'-FL and 3-FL (r = - 0.465, p = 0.001). There was a positive correlation between LNT and LNnT (r = 0.778, p = 0.001). Therefore, the concentration of HMOs is related to number of deliveries, delivery mode, lactation mode and perinatal antibiotic. The concentration of HMOs is related to Lactobacillus, Streptococcus and Streptococcus in colostrum. In addition, there are connections between different oligosaccharides in content. The study protocol was also registered in the ClinicalTrails.gov (ChiCTR2200064454) (Oct. 2022).
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Affiliation(s)
- Wen Sun
- Department of Traditional Chinese Medicine, Shanghai Fourth People's Hospital Affiliated to Tongji University, Shanghai, 200434, China
| | - Lin Tao
- Department of Traditional Chinese Medicine, Shanghai Fourth People's Hospital Affiliated to Tongji University, Shanghai, 200434, China
| | - Chen Qian
- Department of Traditional Chinese Medicine, Shanghai Fourth People's Hospital Affiliated to Tongji University, Shanghai, 200434, China
| | - Peipei Xue
- Department of Traditional Chinese Medicine, Shanghai Fourth People's Hospital Affiliated to Tongji University, Shanghai, 200434, China
| | - Xiankun Tong
- Laboratory of Immunopharmacology, Shanghai Institute of Materia Medical, Chinese Academy of Sciences, Shanghai, 201210, China
| | - Li Yang
- Laboratory of Immunopharmacology, Shanghai Institute of Materia Medical, Chinese Academy of Sciences, Shanghai, 201210, China
| | - Fang Lu
- Department of Gynaecology and Obstetrics, Shanghai Fourth People's Hospital Affiliated to Tongji University, Shanghai, 200434, China
| | - Hua Wan
- Department of Breast, Shuguang Hospital Affiliated to Shanghai University of Traditional Chinese Medicine, Shanghai, 201203, China.
| | - Yingna Tao
- Department of Traditional Chinese Medicine, Shanghai Fourth People's Hospital Affiliated to Tongji University, Shanghai, 200434, China.
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