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Lu S, He S, Yue K, Mi J, Huang Y, Song L, Yang T, Ren Z, Ren L, Xu J. Lactobacillus plantarum GUANKE modulate anti-viral function of dendritic cells in mice. Int Immunopharmacol 2024; 134:112169. [PMID: 38728879 DOI: 10.1016/j.intimp.2024.112169] [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: 01/17/2024] [Revised: 04/26/2024] [Accepted: 04/26/2024] [Indexed: 05/12/2024]
Abstract
GUANKE is a Lactobacillus plantarum isolated from the feces of healthy volunteer. We have previously shown that GUANKE enhances the efficacy of the SARS-CoV-2 vaccine and prolongs the duration of vaccine protection by upregulating the IFN pathway and T and B lymphocyte functions of the host. The purpose of this study was to evaluate the protective effects and mechanism of oral administration of Lactobacillus plantarum GUANKE in the influenza (A virus A/Puerto Rico/8/34) infection mouse model. In our experiment, oral administration of GUANKE significantly decreased viral load and increased tight junction proteins expression in lung tissues of influenza-infected mice. After GUANKE was co-cultured with mBMDCs in vitro, mBMDCs' maturity and antiviral ability were enhanced, and matured mBMDCs induced polarization of naïve CD4+ T cells into T helper (Th) 1 cells. Adoptive transfer of GUANKE-treated mBMDCs could protect mice from influenza infections. This study suggests that oral administration of Lactobacillus plantarum GUANKE could provide protection against influenza infection in mice, and this protective effect may be mediated, at least in part, by dendritic cells.
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Affiliation(s)
- Simin Lu
- Research Unite for Unknown Microbe, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, China; Institute of Pathogen Biology, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, China; National Key Laboratory of Intelligent Tracking and Forecasting for Infectious Diseases, National Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing, China
| | - Siqin He
- National Key Laboratory of Intelligent Tracking and Forecasting for Infectious Diseases, National Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing, China
| | - Kun Yue
- Research Unite for Unknown Microbe, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, China; Institute of Pathogen Biology, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, China; National Key Laboratory of Intelligent Tracking and Forecasting for Infectious Diseases, National Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing, China
| | - Jielan Mi
- National Key Laboratory of Intelligent Tracking and Forecasting for Infectious Diseases, National Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing, China; Institute of Public Health, Nankai University, Tianjin, China
| | - Yuanming Huang
- National Key Laboratory of Intelligent Tracking and Forecasting for Infectious Diseases, National Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing, China
| | - Liqiong Song
- National Key Laboratory of Intelligent Tracking and Forecasting for Infectious Diseases, National Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing, China
| | - Tao Yang
- National Key Laboratory of Intelligent Tracking and Forecasting for Infectious Diseases, National Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing, China
| | - Zhihong Ren
- National Key Laboratory of Intelligent Tracking and Forecasting for Infectious Diseases, National Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing, China.
| | - Lili Ren
- Institute of Pathogen Biology, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, China.
| | - Jianguo Xu
- Research Unite for Unknown Microbe, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, China; Institute of Pathogen Biology, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, China; National Key Laboratory of Intelligent Tracking and Forecasting for Infectious Diseases, National Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing, China; Institute of Public Health, Nankai University, Tianjin, China.
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Wang X, Li L, Liu T, Shi Y. More than nutrition: Therapeutic potential and mechanism of human milk oligosaccharides against necrotizing enterocolitis. Life Sci 2024; 339:122420. [PMID: 38218534 DOI: 10.1016/j.lfs.2024.122420] [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: 10/22/2023] [Revised: 12/31/2023] [Accepted: 01/08/2024] [Indexed: 01/15/2024]
Abstract
Human milk is the most valuable source of nutrition for infants. The structure and function of human milk oligosaccharides (HMOs), which are key components of human milk, have long been attracting particular research interest. Several recent studies have found HMOs to be efficacious in the prevention and treatment of necrotizing enterocolitis (NEC). Additionally, they could be developed in the future as non-invasive predictive markers for NEC. Based on previous findings and the well-defined functions of HMOs, we summarize potential protective mechanisms of HMOs against neonatal NEC, which include: modulating signal receptor function, promoting intestinal epithelial cell proliferation, reducing apoptosis, restoring intestinal blood perfusion, regulating microbial prosperity, and alleviating intestinal inflammation. HMOs supplementation has been demonstrated to be protective against NEC in both animal studies and clinical observations. This calls for mass production and use of HMOs in infant formula, necessitating more research into the safety of industrially produced HMOs and the appropriate dosage in infant formula.
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Affiliation(s)
- Xinru Wang
- Department of Pediatrics, Shengjing Hospital of China Medical University, No. 36, San Hao Street, Heping District, Shenyang, Liaoning 110004, China
| | - Ling Li
- Department of Pediatrics, Shengjing Hospital of China Medical University, No. 36, San Hao Street, Heping District, Shenyang, Liaoning 110004, China
| | - Tianjing Liu
- Department of Pediatrics, Shengjing Hospital of China Medical University, No. 36, San Hao Street, Heping District, Shenyang, Liaoning 110004, China.
| | - Yongyan Shi
- Department of Pediatrics, Shengjing Hospital of China Medical University, No. 36, San Hao Street, Heping District, Shenyang, Liaoning 110004, China.
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Súkeníková L, Černý V, Thon T, Roubalová R, Jirásková Zákostelská Z, Novotná O, Petrásková P, Boráková K, Kocourková I, Lodinová-Žádníková R, Musil Z, Kolářová L, Prokešová L, Valenta Z, Hrdý J. Effect of early postnatal supplementation of newborns with probiotic strain E. coli O83:K24:H31 on allergy incidence, dendritic cells, and microbiota. Front Immunol 2023; 13:1038328. [PMID: 36703968 PMCID: PMC9872645 DOI: 10.3389/fimmu.2022.1038328] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2022] [Accepted: 12/20/2022] [Indexed: 01/11/2023] Open
Abstract
Introduction Probiotic administration seems to be a rational approach to promote maturation of the neonatal immune system. Mutual interaction of the microbiota with the host immune system is critical for the setting of appropriate immune responses including a tolerogenic one and thevmaintenance of homeostasis. On the other hand, our knowledge on the modes of actions of probiotics is still scarce. Methods In our study, probiotic strain Escherichia coli O83:K24:H31 (EcO83) was administered to neonates of allergic mothers (AMs; neonates with increased risk for allergy development) within 48 h after the delivery, and the impact of this early postnatal supplementation on allergy incidence and selected immune markers has been analyzed 10 years after the primary EcO83 administration. Results We have observed decreased allergy incidence in 10-year-old children supplemented with EcO83 (13 of 52 children were allergic) in comparison with non-supplemented children of AMs (16 of 42 children were allergic). The early postnatal EcO83 supplementation appeared to limit the allergy in the high-risk group (children of AMs) compared to that in the low-risk group (children of healthy mothers). Dendritic cells (DCs) in the peripheral blood of EcO83-supplemented children do not differ significantly in cell surface presence of CD83. The immunomodulatory capacity of EcO83 on DCs was tested in vitro as well. Both directly isolated myeloid and in vitro monocyte-derived DCs from cord blood increased CD83 expression together with interleukin (IL)-10 secretion after EcO83 stimulation. The effect of early postnatal EcO83 supplementation on the microbiota composition of 10-year-old children was characterized by next-generation sequencing, and we have not observed significant changes in the microbiota composition of EcO83-supplemented and non-supplemented children at the age of 10 years. Conclusions Early postnatal EcO83 supplementation appears to lower allergy incidence in children of AMs. It seems that the beneficial effect of EcO83 is mediated via modulation of DC functional capacities without impacting the microbiota composition. Larger-scale studies will be necessary to confirm these preliminary findings.
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Affiliation(s)
- Lenka Súkeníková
- Institute of Immunology and Microbiology, First Faculty of Medicine, Charles University, Prague, Czechia
| | - Viktor Černý
- Institute of Immunology and Microbiology, First Faculty of Medicine, Charles University, Prague, Czechia
| | - Tomáš Thon
- Institute of Microbiology, Academy of Sciences, Prague, Czechia
| | - Radka Roubalová
- Institute of Microbiology, Academy of Sciences, Prague, Czechia
| | | | - Olga Novotná
- Institute of Immunology and Microbiology, First Faculty of Medicine, Charles University, Prague, Czechia
| | - Petra Petrásková
- Institute of Immunology and Microbiology, First Faculty of Medicine, Charles University, Prague, Czechia
| | - Kristýna Boráková
- Department of Neonatology, Institute for the Care of Mother and Child, Prague, Czechia
| | - Ingrid Kocourková
- Department of Neonatology, Institute for the Care of Mother and Child, Prague, Czechia
| | | | - Zdeněk Musil
- Institute of Biology and Medical Genetics, First Faculty of Medicine, Charles University, Prague, Czechia
| | - Libuše Kolářová
- Institute of Immunology and Microbiology, First Faculty of Medicine, Charles University, Prague, Czechia
| | - Ludmila Prokešová
- Institute of Immunology and Microbiology, First Faculty of Medicine, Charles University, Prague, Czechia
| | - Zdeněk Valenta
- Department of Statistical Modelling, Institute of Computer Science of the Czech Academy of Sciences, Prague, Czechia
| | - Jiří Hrdý
- Institute of Immunology and Microbiology, First Faculty of Medicine, Charles University, Prague, Czechia,*Correspondence: Jiří Hrdý,
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