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Liu X, Li X, Xie M, Guo J, Zheng X, Shi S, Cui Q, Zhang D, Zhang Z, Wang Z. Association of gut microbiome and oral cavity cancer: A two sample mendelian randomization and case-control study. JOURNAL OF STOMATOLOGY, ORAL AND MAXILLOFACIAL SURGERY 2024; 125:101736. [PMID: 38086473 DOI: 10.1016/j.jormas.2023.101736] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/06/2023] [Revised: 12/07/2023] [Accepted: 12/07/2023] [Indexed: 08/28/2024]
Abstract
INTRODUCTION Considering the interconnectedness of the oral cavity and gut tract and the presence of abundant natural microbiota in both. We utilized Mendelian Randomization (MR) in a two-sample study to unveil the genetic causal impact of gut microbiota on the development of oral cavity cancer. MATERIALS & METHODS The instrumental variables employed in this study consisted of single nucleotide polymorphisms (SNPs) that demonstrated a robust association with 211 distinct gut microbiota taxa, encompassing a sample size of 18,340 individuals. Our investigation sought to explore the potential causal relationship between these genetic variants and the incidence of oral cavity cancer. To accomplish this, we adopted a random effect inverse variance-weighted approach to analyze the causal effect. Additionally, sensitivity analyses were performed utilizing Cochran's Q tests, funnel plots, leave-one-out analyses, and MR-Egger intercept tests, to assess the robustness and validity of our findings. RESULTS Five gut microbiota taxa (the family Prevotellaceae, the genus Alloprevotella, the genus Erysipelatoclostridium, the genus Parabacteroides, the genus Ruminococcus gauvreauii group) are predicted to play a causal role in promoting the initiation of the risk of oral cavity cancer. While the genus Christensenellaceae R 7 group, the genus Intestinimonas, the genus Ruminococcaceae, and the order Bacillales causally reduce the risk of oral cavity cancer. Furthermore, no significant evidence suggesting heterogeneity or pleiotropy was observed. DISCUSSION The novel genetic causal effects of 211 gut microbiota taxa on oral cavity cancer are elucidated in this investigation, thus offering valuable insights for clinical interventions targeting oral cavity cancer.
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Affiliation(s)
- Xinpeng Liu
- Department of Oral and Maxillofacial Surgery, Stomatological Hospital, School of Stomatology, Southern Medical University, No. 366, South of Jiangnan Boulevard, Guangzhou, 510280, P.R. China
| | - Xinping Li
- Department of Oral and Maxillofacial Surgery, Stomatological Hospital, School of Stomatology, Southern Medical University, No. 366, South of Jiangnan Boulevard, Guangzhou, 510280, P.R. China
| | - Menglan Xie
- Department of Oral and Maxillofacial Surgery, Stomatological Hospital, School of Stomatology, Southern Medical University, No. 366, South of Jiangnan Boulevard, Guangzhou, 510280, P.R. China
| | - Jinyuan Guo
- Department of Oral and Maxillofacial Surgery, Stomatological Hospital, School of Stomatology, Southern Medical University, No. 366, South of Jiangnan Boulevard, Guangzhou, 510280, P.R. China
| | - Xianghuai Zheng
- Department of Oral and Maxillofacial Surgery, Stomatological Hospital, School of Stomatology, Southern Medical University, No. 366, South of Jiangnan Boulevard, Guangzhou, 510280, P.R. China
| | - Shanwei Shi
- Department of Oral and Maxillofacial Surgery, Stomatological Hospital, School of Stomatology, Southern Medical University, No. 366, South of Jiangnan Boulevard, Guangzhou, 510280, P.R. China
| | - Qiuju Cui
- Department of Oral and Maxillofacial Surgery, Stomatological Hospital, School of Stomatology, Southern Medical University, No. 366, South of Jiangnan Boulevard, Guangzhou, 510280, P.R. China
| | - Danya Zhang
- Department of Oral and Maxillofacial Surgery, Stomatological Hospital, School of Stomatology, Southern Medical University, No. 366, South of Jiangnan Boulevard, Guangzhou, 510280, P.R. China
| | - Zhaoqiang Zhang
- Department of Oral and Maxillofacial Surgery, Stomatological Hospital, School of Stomatology, Southern Medical University, No. 366, South of Jiangnan Boulevard, Guangzhou, 510280, P.R. China.
| | - Zhiping Wang
- Department of Oral and Maxillofacial Surgery, Stomatological Hospital, School of Stomatology, Southern Medical University, No. 366, South of Jiangnan Boulevard, Guangzhou, 510280, P.R. China.
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Li D, He X, Li F, Yang Y, Liu M, Liu Q, Luo L, Chen G, Liu G. Effect of transglutaminase-catalyzed glycosylation on the allergenicity of tropomyosin in the Perna viridis food matrix. Food Funct 2024. [PMID: 39157921 DOI: 10.1039/d4fo02305f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/20/2024]
Abstract
Food allergy is one of the hot issues in the field of food safety, and there have been a lot of concerns on how to reduce the allergenicity of food allergens. Food processing can change the allergenicity of allergens in the food matrix. In this study, ten IgE linear epitopes of the major allergen tropomyosin (TM) in Perna viridis were identified by bioinformatics prediction and serological experiments. The transglutaminase-catalyzed glycosylation modification sites glutamine, lysine and arginine were highly represented in the IgE linear epitopes of TM. The Perna viridis food matrix was treated with transglutaminase-catalyzed glycosylation. This reaction changed the secondary structure of protein in the food matrix, increased the content of β-sheets and decreased the content of β-turns. The intensity of intrinsic fluorescence and surface hydrophobicity were reduced. The IgE-binding activity of TM in the food matrix was reduced by modifying seven amino acid residues on six IgE linear epitopes. Transglutaminase-catalyzed glycosylation products decreased allergic symptoms in allergic mice, reduced the proportion of CD4+IL-4+ Th2 cells, and increased the proportion of CD4+IFN-γ+ Th1 cells and Treg cells. Mouse serum levels of IgE and IgG1 antibodies in the food matrix and TM were reduced. Therefore, this study provided a theoretical basis for the development of hypoallergenic Perna viridis products.
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Affiliation(s)
- Dongxiao Li
- College of Ocean Food and Biological Engineering, Xiamen Key Laboratory of Marine Functional Food, Fujian Provincial Engineering Technology Research Center of Marine Functional Food, Jimei University, Xiamen, Fujian 361021, China.
| | - Xinrong He
- College of Ocean Food and Biological Engineering, Xiamen Key Laboratory of Marine Functional Food, Fujian Provincial Engineering Technology Research Center of Marine Functional Food, Jimei University, Xiamen, Fujian 361021, China.
| | - Fajie Li
- College of Ocean Food and Biological Engineering, Xiamen Key Laboratory of Marine Functional Food, Fujian Provincial Engineering Technology Research Center of Marine Functional Food, Jimei University, Xiamen, Fujian 361021, China.
| | - Yang Yang
- College of Ocean Food and Biological Engineering, Xiamen Key Laboratory of Marine Functional Food, Fujian Provincial Engineering Technology Research Center of Marine Functional Food, Jimei University, Xiamen, Fujian 361021, China.
- College of Environment and Public Health, Xiamen Huaxia University, Xiamen, Fujian 361000, China
| | - Meng Liu
- College of Ocean Food and Biological Engineering, Xiamen Key Laboratory of Marine Functional Food, Fujian Provincial Engineering Technology Research Center of Marine Functional Food, Jimei University, Xiamen, Fujian 361021, China.
- College of Marine Biology, Xiamen Ocean Vocational College, Xiamen, Fujian 361100, China
| | - Qingmei Liu
- College of Ocean Food and Biological Engineering, Xiamen Key Laboratory of Marine Functional Food, Fujian Provincial Engineering Technology Research Center of Marine Functional Food, Jimei University, Xiamen, Fujian 361021, China.
| | - Lianzhong Luo
- Engineering Research Center of Marine Biopharmaceutical Resource, Fujian Province University, Xiamen Medical College, Xiamen, Fujian 361023, China
| | - Guixia Chen
- Women and Children's Hospital Affiliated to Xiamen University, Xiamen, Fujian 361003, China
| | - Guangming Liu
- College of Ocean Food and Biological Engineering, Xiamen Key Laboratory of Marine Functional Food, Fujian Provincial Engineering Technology Research Center of Marine Functional Food, Jimei University, Xiamen, Fujian 361021, China.
- College of Marine Biology, Xiamen Ocean Vocational College, Xiamen, Fujian 361100, China
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Mao JH, Wang Y, Chen WM, Wang XM, Liu J, Shao YH, Tu ZC. Galacto-oligosaccharides modified whey protein isolate ameliorates cyclophosphamide-induced immunosuppression. Int J Biol Macromol 2024; 278:134642. [PMID: 39128745 DOI: 10.1016/j.ijbiomac.2024.134642] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2024] [Revised: 08/08/2024] [Accepted: 08/08/2024] [Indexed: 08/13/2024]
Abstract
The effect of whey protein isolate (WPI)- galacto-oligosaccharides (GOS)/fructo-oligosaccharides (FOS) conjugates on RAW264.7 cells, and further the effect of WPI-GOS conjugates on CTX-induced immunosuppressed mice were investigated. Compared to WPI-FOS conjugates, WPI-GOS conjugates exhibited deeper glycation extent, more pronounced structural unfolding and helix-destabilizing, and obviously improved functional indicators of RAW264.7 macrophages. In addition, WPI-GOS conjugates also repaired immune organ and intestinal barrier and increased IL-1β and IFN-γ levels in immunosuppressed mice. The alteration of gut microbiota induced by WPI-GOS conjugates changed the serum metabolites, causing the activation of NFκB pathway, which strengthens the immune system. The activation of NFκB pathway maybe associated with the mTOR signal pathway and ABC transporters. However, the precise mechanisms by which NFκB pathway interacts with mTOR signal pathway and ABC transporters to modulate the immune response need for further research.
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Affiliation(s)
- Ji-Hua Mao
- National R&D Center for Freshwater Fish Processing, College of Chemistry and Chemical Engineering, College of Life Science, Jiangxi Normal University, Nanchang, Jiangxi 330022, China
| | - Yang Wang
- National R&D Center for Freshwater Fish Processing, College of Chemistry and Chemical Engineering, College of Life Science, Jiangxi Normal University, Nanchang, Jiangxi 330022, China
| | - Wen-Mei Chen
- National R&D Center for Freshwater Fish Processing, College of Chemistry and Chemical Engineering, College of Life Science, Jiangxi Normal University, Nanchang, Jiangxi 330022, China
| | - Xu-Mei Wang
- National R&D Center for Freshwater Fish Processing, College of Chemistry and Chemical Engineering, College of Life Science, Jiangxi Normal University, Nanchang, Jiangxi 330022, China
| | - Jun Liu
- National R&D Center for Freshwater Fish Processing, College of Chemistry and Chemical Engineering, College of Life Science, Jiangxi Normal University, Nanchang, Jiangxi 330022, China
| | - Yan-Hong Shao
- National R&D Center for Freshwater Fish Processing, College of Chemistry and Chemical Engineering, College of Life Science, Jiangxi Normal University, Nanchang, Jiangxi 330022, China.
| | - Zong-Cai Tu
- National R&D Center for Freshwater Fish Processing, College of Chemistry and Chemical Engineering, College of Life Science, Jiangxi Normal University, Nanchang, Jiangxi 330022, China; State Key Laboratory of Food Science and Resources, Nanchang University, Nanchang, Jiangxi 330047, China.
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Xia X, Li J, Liang R, Li Y, Ma X, Yang Y, Lozano-Ojalvo D. Effects of unfolding treatment assisted glycation on the IgE/IgG binding capacity and antioxidant activity of ovomucoid. Food Funct 2024; 15:196-207. [PMID: 38047408 DOI: 10.1039/d3fo04035f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/05/2023]
Abstract
Ovomucoid is the immune-dominant allergen in the egg white of hens. Due to its structure based on nine disulfide bonds as well as its resistance to heat and enzymatic hydrolysis, the allergenicity of this food protein is difficult to decrease by technological processes. We sought to reduce its allergenicity through the Maillard reaction. The unfolding of ovomucoid with L-cysteine-mediated reduction was used to increase accessibility to conformational and linear epitopes by modifying the secondary and tertiary structures of the allergen. Glycation with different saccharides revealed the beneficial effect of maltose glycation on the IgG-binding capacity reduction. By determining the better glycation conditions of unfolded ovomucoid, we produced ovomucoid with reduced IgE binding capacity due to the glycation sites (K17, K112, K129, and K164) on epitopes. Moreover, after simulated infant and adult gastrointestinal digestion, the unfolded plus glycated ovomucoid showed higher ABTS˙+ scavenging activity, O2˙- scavenging activity, ˙OH scavenging activity, Fe2+ chelating activity, and a FRAP value; in particular, for ˙OH scavenging activity, there was a sharp increase of more than 100%.
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Affiliation(s)
- Xian Xia
- School of Public Health, Zunyi Medical University, Zunyi 563000, China.
| | - Jiangdong Li
- School of Public Health, Zunyi Medical University, Zunyi 563000, China.
| | - Rui Liang
- School of Public Health, Zunyi Medical University, Zunyi 563000, China.
| | - Yi Li
- School of Public Health, Zunyi Medical University, Zunyi 563000, China.
| | - Xiaojuan Ma
- School of Public Health, Zunyi Medical University, Zunyi 563000, China.
- Key Laboratory of Maternal & Child Health and Exposure Science of Guizhou Higher Education Institutes, Zunyi 563000, China
| | - Ying Yang
- Department of Dermatology, The Second Affiliated Hospital of Zunyi Medical University, Zunyi 563000, China
| | - Daniel Lozano-Ojalvo
- Instituto de Investigaciónen Ciencias de la Alimentación (CIAL, CSIC), Madrid 28049, Spain
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