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Zhang Y, Zhao M, Li Y, Liang S, Li X, Wu Y, Li G. Potential Probiotic Properties and Complete Genome Analysis of Limosilactobacillus reuteri LRA7 from Dogs. Microorganisms 2024; 12:1811. [PMID: 39338485 DOI: 10.3390/microorganisms12091811] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2024] [Revised: 08/23/2024] [Accepted: 08/29/2024] [Indexed: 09/30/2024] Open
Abstract
This study aimed to isolate and screen canine-derived probiotics with excellent probiotic properties. Strain characterization was conducted using a combination of in vitro and in vivo probiotic characterization and safety assessments, as well as complete genome analysis. The results showed that Limosilactobacillus reuteri LRA7 exhibited excellent bacteriostatic and antioxidant activities. The survival rate at pH 2.5 was 79.98%, and the viable counts after exposure to gastrointestinal fluid and 0.5% bile salts were 7.77 log CFU/mL and 5.29 log CFU/mL, respectively. The bacterium also exhibited high hydrophobicity, self-coagulation, and high temperature tolerance, was negative for hemolysis, and was sensitive to clindamycin. In vivo studies in mice showed that the serum superoxide dismutase activity level was 53.69 U/mL higher in the MR group of mice compared to that of the control group, the malondialdehyde content was 0.53 nmol/mL lower in the HR group, and the highest jejunal V/C value was 4.11 ± 1.05 in the HR group (p < 0.05). The L. reuteri LRA7 gene is 2.021 megabases in size, contains one chromosome and one plasmid, and is annotated with 1978 functional genes. In conclusion, L. reuteri LRA7 has good probiotic potential and is safe. It can be used as an ideal probiotic candidate strain of canine origin.
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Affiliation(s)
- Yuanyuan Zhang
- College of Animal Science and Technology, Qingdao Agricultural University, Qingdao 266109, China
| | - Mengdi Zhao
- College of Animal Science and Technology, Qingdao Agricultural University, Qingdao 266109, China
- College of Animal Science and Technology, Jilin Agricultural University, Changchun 130118, China
| | - Yueyao Li
- College of Animal Science and Technology, Qingdao Agricultural University, Qingdao 266109, China
| | - Shuang Liang
- College of Animal Science and Technology, Qingdao Agricultural University, Qingdao 266109, China
| | - Xinkang Li
- College of Animal Science and Technology, Qingdao Agricultural University, Qingdao 266109, China
| | - Yi Wu
- College of Animal Science and Technology, Qingdao Agricultural University, Qingdao 266109, China
| | - Guangyu Li
- College of Animal Science and Technology, Qingdao Agricultural University, Qingdao 266109, China
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Zhao Y, Qi C, Li X, Lu M, Zhang H, Zhou J, Dang H, Chen J, Li S, Sun J, Yu R, Li D. Prevention of Atopic Dermatitis in Mice by Lactobacillus Reuteri Fn041 Through Induction of Regulatory T Cells and Modulation of the Gut Microbiota. Mol Nutr Food Res 2021; 66:e2100699. [PMID: 34825773 DOI: 10.1002/mnfr.202100699] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2021] [Revised: 11/11/2021] [Indexed: 11/11/2022]
Abstract
SCOPE The development of atopic dermatitis (AD) in infants is closely related to the lagging development of intestinal microbiota, including that inoculated by breast milk bacteria, and immune development. Lactobacillus reuteri Fn041 is a secretory immunoglobulin A (sIgA) -coated bacterium derived from human milk. METHODS AND RESULTS We intervened with L. reuteri Fn041 in maternal and offspring BALB/C mice during late gestation and lactation and after weaning of the pups, respectively. AD was then induced with MC903. L. reuteri Fn041 significantly suppressed AD symptoms such as skin swelling, mast cell and eosinophil infiltration. This effect was attributed to the regulation of the systemic Th1 and Th2 cytokine ratios and the promotion of CD4+ CD25+ Foxp3+ regulatory T cell proliferation in mesenteric lymph nodes. It is also associated with the regulation of intestinal microbiota, particularly promoting Lactobacillus and Akkermansia. CONCLUSIONS Our study strengthens the understanding that breast milk-derived sIgA coated potential probiotics are involved in the development of infant intestinal microbiota, thus promoting immune development and preventing allergic diseases, and expanding the knowledge of breast milk sIgA and bacterial interactions on infant immune development. This article is protected by copyright. All rights reserved.
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Affiliation(s)
- Yuning Zhao
- Institute of Nutrition and Health, Qingdao University, Qingdao, 266071, China
| | - Ce Qi
- Institute of Nutrition and Health, Qingdao University, Qingdao, 266071, China
| | - Xinyue Li
- Institute of Nutrition and Health, Qingdao University, Qingdao, 266071, China
| | - Mengyao Lu
- Institute of Nutrition and Health, Qingdao University, Qingdao, 266071, China
| | - Haowen Zhang
- Institute of Nutrition and Health, Qingdao University, Qingdao, 266071, China
| | - Jingbo Zhou
- Institute of Nutrition and Health, Qingdao University, Qingdao, 266071, China
| | - Hongyang Dang
- Institute of Nutrition and Health, Qingdao University, Qingdao, 266071, China
| | - Jie Chen
- Department of Pediatric Cardiology Nephrology and Rheumatism, The Affiliated, Hospital of Qingdao University Medical College, Qingdao, 266003, China
| | - Shuangqi Li
- Guangzhou Fine Nutrition Research Center, Guangzhou, 510700, China
| | - Jin Sun
- Institute of Nutrition and Health, Qingdao University, Qingdao, 266071, China
| | - Renqiang Yu
- Department of Neonatology, The Affiliated Wuxi Maternity and Child Health Care Hospital of Nanjing Medical University, Wuxi, 214002, China
| | - Duo Li
- Institute of Nutrition and Health, Qingdao University, Qingdao, 266071, China
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Li XY, Li LX, Li Y, Zhou RC, Li B, Gu X, Fu SC, Jin BY, Zuo XL, Li YQ. Complete genome sequencing of Peyer's patches-derived Lactobacillus taiwanensis CLG01, a potential probiotic with antibacterial and immunomodulatory activity. BMC Microbiol 2021; 21:68. [PMID: 33639835 PMCID: PMC7916312 DOI: 10.1186/s12866-021-02127-z] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2020] [Accepted: 02/11/2021] [Indexed: 12/13/2022] Open
Abstract
Background The genus Lactobacillus is an important component of the gastrointestinal tract of human and animals and commonly considered as probiotic. L. taiwanensis has long been proposed to be a probiotic whereas understanding on this species is still in its infancy. Genomic information of L. taiwanensis is fairly limited. Extensive characterization of its beneficial traits is needed. Results A new strain CLG01 of L. taiwanensis was isolated from mouse Peyer’s patches. We established its probiotic profile through in vitro experiments. Complete genome of this strain was also sequenced and analyzed. L. taiwanensis CLG01 showed robust tolerance to acid and a degree of tolerance to bile salt with a promising antibacterial activity against a broad spectrum of pathogenic bacteria. In vitro treatment of mouse RAW 264.7 macrophage cells with heat-killed bacteria and bacterial supernatant of L. taiwanensis CLG01 resulted in enhancement of immune responses and upregulated expression of TNF-α and IL-6. The strain CLG01 also increased the IL-10 production of macrophages when co-treated with lipopolysaccharide (LPS). Complete genome of L. taiwanensis CLG01 contained a 1.89 Mb chromosome and two plasmids. Further genomic analysis revealed the presence of genes related to its resistance to different stresses and the beneficial effects mentioned above. Moreover, biosynthetic gene clusters (BGCs) encoding antimicrobial peptides, like bacteriocin, linear azol(in)e-containing peptide (LAP) and lanthipeptide, were also identified in the genome of L. taiwanensis CLG01. Conclusions L. taiwanensis CLG01, isolated from mouse Peyer’s patches, is the first L. taiwanensis strain with both phenotypes and genotypes systematically studied. These preliminary data confirmed the role of L. taiwanensis CLG01 as a potential probiotic candidate with antibacterial and immunomodulatory activity, which provide insight for further investigation to this species. Supplementary Information The online version contains supplementary material available at 10.1186/s12866-021-02127-z.
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Affiliation(s)
- Xiao-Yu Li
- Department of Gastroenterology, Qilu Hospital, Cheeloo College of Medicine, Shandong University, 107 Wenhuaxi Road, Jinan, 250012, Shandong Province, China.,Laboratory of Translational Gastroenterology, Qilu Hospital, Cheeloo College of Medicine, Shandong University, Jinan, Shandong, China
| | - Li-Xiang Li
- Department of Gastroenterology, Qilu Hospital, Cheeloo College of Medicine, Shandong University, 107 Wenhuaxi Road, Jinan, 250012, Shandong Province, China.,Laboratory of Translational Gastroenterology, Qilu Hospital, Cheeloo College of Medicine, Shandong University, Jinan, Shandong, China
| | - Yan Li
- Department of Gastroenterology, Qilu Hospital, Cheeloo College of Medicine, Shandong University, 107 Wenhuaxi Road, Jinan, 250012, Shandong Province, China.,Laboratory of Translational Gastroenterology, Qilu Hospital, Cheeloo College of Medicine, Shandong University, Jinan, Shandong, China
| | - Ru-Chen Zhou
- Department of Gastroenterology, Qilu Hospital, Cheeloo College of Medicine, Shandong University, 107 Wenhuaxi Road, Jinan, 250012, Shandong Province, China.,Laboratory of Translational Gastroenterology, Qilu Hospital, Cheeloo College of Medicine, Shandong University, Jinan, Shandong, China
| | - Bing Li
- Department of Gastroenterology, Qilu Hospital, Cheeloo College of Medicine, Shandong University, 107 Wenhuaxi Road, Jinan, 250012, Shandong Province, China.,Laboratory of Translational Gastroenterology, Qilu Hospital, Cheeloo College of Medicine, Shandong University, Jinan, Shandong, China
| | - Xiang Gu
- Department of Gastroenterology, Qilu Hospital, Cheeloo College of Medicine, Shandong University, 107 Wenhuaxi Road, Jinan, 250012, Shandong Province, China.,Laboratory of Translational Gastroenterology, Qilu Hospital, Cheeloo College of Medicine, Shandong University, Jinan, Shandong, China
| | - Shi-Chen Fu
- Department of Gastroenterology, Qilu Hospital, Cheeloo College of Medicine, Shandong University, 107 Wenhuaxi Road, Jinan, 250012, Shandong Province, China.,Laboratory of Translational Gastroenterology, Qilu Hospital, Cheeloo College of Medicine, Shandong University, Jinan, Shandong, China
| | - Bi-Ying Jin
- Department of Gastroenterology, Qilu Hospital, Cheeloo College of Medicine, Shandong University, 107 Wenhuaxi Road, Jinan, 250012, Shandong Province, China.,Laboratory of Translational Gastroenterology, Qilu Hospital, Cheeloo College of Medicine, Shandong University, Jinan, Shandong, China
| | - Xiu-Li Zuo
- Department of Gastroenterology, Qilu Hospital, Cheeloo College of Medicine, Shandong University, 107 Wenhuaxi Road, Jinan, 250012, Shandong Province, China.,Laboratory of Translational Gastroenterology, Qilu Hospital, Cheeloo College of Medicine, Shandong University, Jinan, Shandong, China.,Robot engineering laboratory for precise diagnosis and therapy of GI tumor, Qilu Hospital, Cheeloo College of Medicine, Shandong University, Jinan, Shandong, China
| | - Yan-Qing Li
- Department of Gastroenterology, Qilu Hospital, Cheeloo College of Medicine, Shandong University, 107 Wenhuaxi Road, Jinan, 250012, Shandong Province, China. .,Laboratory of Translational Gastroenterology, Qilu Hospital, Cheeloo College of Medicine, Shandong University, Jinan, Shandong, China. .,Robot engineering laboratory for precise diagnosis and therapy of GI tumor, Qilu Hospital, Cheeloo College of Medicine, Shandong University, Jinan, Shandong, China.
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Qi C, Ding M, Li S, Zhou Q, Li D, Yu R, Sun J. Sex-dependent modulation of immune development in mice by secretory IgA-coated Lactobacillus reuteri isolated from breast milk. J Dairy Sci 2021; 104:3863-3875. [PMID: 33612242 DOI: 10.3168/jds.2020-19437] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2020] [Accepted: 12/04/2020] [Indexed: 12/11/2022]
Abstract
Lactobacilli, commonly present in human breast milk, appear to colonize the neonatal gut and provide protection to infants against various infections, thereby promoting immune development. This study examined the potential probiotic role of breast milk-derived Lactobacillus reuteri FN041 in immune development in mice. The FN041 were gavaged either to BALB/c dams (n = 6/group) during the lactation period or to their offspring (n = 6/sex per intervention) after weaning separately (cointervention). All interventions induced increased intestinal barriers in 5-wk-old offspring, especially in the females. Immunoglobulin A plasmocytes in ileal tissue and secretory IgA (sIgA) in ileal contents increased in all 5-wk-old offspring of cointervention. The activation of mRNA expression of 17 genes was sex-dependent, especially in 5-wk-old offspring. Broader genes were regulated in female mice. The effect of cointervention on the Shannon index of total microbiota is sex-related. The Shannon index of sIgA-coated microbiota increased in both sexes. The sIgA-coated microbiota showed intergroup differences according to β diversity, especially in female mice that showed an increase in Bifidobacterium of Actinobacteria. The sIgA-coated Bifidobacterium was positively correlated with mRNA expression of Tlr9. The sIgA-coated Lactobacillus in male offspring was negatively correlated with mRNA expression of Cldn2. In conclusion, L. reuteri FN041 promoted the production of intestinal sIgA and the expression of genes related to antimicrobial peptides in the offspring and enhanced the function of the mucosal barrier, depending on sex and treatment manner.
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Affiliation(s)
- Ce Qi
- Institute of Nutrition and Health, Qingdao University, Qingdao 266071, PR China
| | - Mengfan Ding
- School of Food Science and Technology, Jiangnan University, Wuxi 214122, PR China
| | - Shuangqi Li
- Guangzhou Fine Nutrition Research Center, Guangzhou, 510700, PR China
| | - Qin Zhou
- Department of Neonatology, The Affiliated Wuxi Maturity and Child Health Care Hospital of Nanjing Medical University, Wuxi 214002, PR China
| | - Duo Li
- Institute of Nutrition and Health, Qingdao University, Qingdao 266071, PR China
| | - Renqiang Yu
- Department of Neonatology, The Affiliated Wuxi Maturity and Child Health Care Hospital of Nanjing Medical University, Wuxi 214002, PR China.
| | - Jin Sun
- Institute of Nutrition and Health, Qingdao University, Qingdao 266071, PR China.
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