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Abbas Z, Tong Y, Wang J, Zhang J, Wei X, Si D, Zhang R. Potential Role and Mechanism of Mulberry Extract in Immune Modulation: Focus on Chemical Compositions, Mechanistic Insights, and Extraction Techniques. Int J Mol Sci 2024; 25:5333. [PMID: 38791372 PMCID: PMC11121110 DOI: 10.3390/ijms25105333] [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: 03/18/2024] [Revised: 05/05/2024] [Accepted: 05/08/2024] [Indexed: 05/26/2024] Open
Abstract
Mulberry is a rapidly growing plant that thrives in diverse climatic, topographical, and soil types, spanning temperature and temperate countries. Mulberry plants are valued as functional foods for their abundant chemical composition, serving as a significant reservoir of bioactive compounds like proteins, polysaccharides, phenolics, and flavonoids. Moreover, these compounds displayed potent antioxidant activity by scavenging free radicals, inhibiting reactive oxygen species generation, and restoring elevated nitric oxide production induced by LPS stimulation through the downregulation of inducible NO synthase expression. Active components like oxyresveratrol found in Morus demonstrated anti-inflammatory effects by inhibiting leukocyte migration through the MEK/ERK signaling pathway. Gallic and chlorogenic acids in mulberry leaves (ML) powder-modulated TNF, IL-6, and IRS1 proteins, improving various inflammatory conditions by immune system modulation. As we delve deeper into understanding its anti-inflammatory potential and how it works therapeutically, it is crucial to refine the extraction process to enhance the effectiveness of its bioactive elements. Recent advancements in extraction techniques, such as solid-liquid extraction, pressurized liquid extraction, superficial fluid extraction, microwave-assisted extraction, and ultrasonic-assisted extraction, are being explored. Among the extraction methods tested, including Soxhlet extraction, maceration, and ultrasound-assisted extraction (UAE), UAE demonstrated superior efficiency in extracting bioactive compounds from mulberry leaves. Overall, this comprehensive review sheds light on the potential of mulberry as a natural immunomodulatory agent and provides insights into its mechanisms of action for future research and therapeutic applications.
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Affiliation(s)
| | | | | | | | | | | | - Rijun Zhang
- State Key Laboratory of Animal Nutrition, College of Animal Science and Technology, China Agricultural University, Beijing 100193, China; (Z.A.); (Y.T.); (J.W.); (J.Z.); (X.W.); (D.S.)
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Cheng X, Zhu J, Chen Z, Wu Z, Zhang F, Wu C, Fan G. Color stability and degradation kinetics of anthocyanins in mulberry stirred yoghurt fermented by different starter cultures. Food Sci Biotechnol 2023; 32:1351-1359. [PMID: 37457399 PMCID: PMC10349000 DOI: 10.1007/s10068-023-01271-8] [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: 09/15/2022] [Revised: 12/09/2022] [Accepted: 01/29/2023] [Indexed: 02/23/2023] Open
Abstract
To evaluate the storage stability of anthocyanin in stirred yoghurt, mulberry juice and different starter cultures (S) were added into milk to investigate the color stability and degradation kinetics of anthocyanin. The result showed that the redness value decreased, while the brightness value increased, and the anthocyanin content decreased significantly from 1.47 ~ 1.86 to 1.01 ~ 1.19 mg/g. The degradation kinetics followed a first-order reaction. Principal component analysis showed that S2 and S6 were correlated with anthocyanins, S8 and S4 were correlated with a*. At the later stage, S4, S8 were correlated with a*, while S2, S4, S6 were correlated with anthocyanins. At 28th day, the anthocyanin content of S4 was 1.14 mg/g, which was not the highest, but the total score was the highest. Therefore, S4 was the best choice when the storage period is 28 days. This study provided technical support for the selection of a better starter for stirring yoghurt. Supplementary Information The online version contains supplementary material available at 10.1007/s10068-023-01271-8.
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Affiliation(s)
- Xin Cheng
- Department of Food Science and Technology, College of Light Industry and Food Engineering, Nanjing Forestry University, Nanjing, 210037 Jiangsu People’s Republic of China
| | - Jinpeng Zhu
- Department of Food Science and Technology, College of Light Industry and Food Engineering, Nanjing Forestry University, Nanjing, 210037 Jiangsu People’s Republic of China
| | - Zhijie Chen
- College of Food Science and Technology, Jiangsu Food and Pharmaceutical Science College, Huai’an, 223005 People’s Republic of China
| | - Zhihao Wu
- Department of Food Science and Technology, College of Light Industry and Food Engineering, Nanjing Forestry University, Nanjing, 210037 Jiangsu People’s Republic of China
| | - Fuqiang Zhang
- Department of Food Science and Technology, College of Light Industry and Food Engineering, Nanjing Forestry University, Nanjing, 210037 Jiangsu People’s Republic of China
| | - Caie Wu
- Department of Food Science and Technology, College of Light Industry and Food Engineering, Nanjing Forestry University, Nanjing, 210037 Jiangsu People’s Republic of China
- Co-Innovation Center for the Sustainable Forestry in Southern China, Nanjing Forestry University, Nanjing, 210037 Jiangsu People’s Republic of China
| | - Gongjian Fan
- Department of Food Science and Technology, College of Light Industry and Food Engineering, Nanjing Forestry University, Nanjing, 210037 Jiangsu People’s Republic of China
- Co-Innovation Center for the Sustainable Forestry in Southern China, Nanjing Forestry University, Nanjing, 210037 Jiangsu People’s Republic of China
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Mesa NC, Alves IA, Vilela FMP, E Silva DM, Forero LAP, Novoa DMA, de Carvalho da Costa J. Fruits as nutraceuticals: A review of the main fruits included in nutraceutical patents. Food Res Int 2023; 170:113013. [PMID: 37316080 DOI: 10.1016/j.foodres.2023.113013] [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: 11/08/2022] [Revised: 04/24/2023] [Accepted: 05/19/2023] [Indexed: 06/16/2023]
Abstract
Fruits have relevant usefulness in the elaboration of nutraceutical compositions and, as it is considered a "natural medicine", its market has been growing exponentially each year. Fruits, in general, contain a large source of phytochemicals, carbohydrates, vitamins, amino acids, peptides and antioxidants that are of interest to be prepared as nutraceuticals. The biological properties of its nutraceuticals can range from antioxidant, antidiabetic, antihypertensive, anti-Alzheimer, antiproliferative, antimicrobial, antibacterial, anti-inflammatory, among others. Furthermore, the need for innovative extraction methods and products reveals the importance of developing new nutraceutical compositions. This review was developed by searching patents of nutraceuticals from January 2015 until January 2022 in Espacenet, the search database of the European Patent Office (EPO). Of 215 patents related to nutraceuticals, 43% (92 patents) were including fruits, mainly berries. A great number of patents were focused on the treatment of metabolic diseases, representing 45% of the total patents. The principal patent applicant was the United States of America (US), with 52%. The patents were applied by researchers, industries, research centers and institutes. It is important to highlight that from 92 fruit nutraceutical patent applications reviewed, 13 already have their products available on the market.
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Affiliation(s)
- Natalia Casas Mesa
- Faculty of Science, Chemistry Department, National University of Colombia, Bogotá, Colombia; Chemistry Department, Exact Science Institute, Federal University of Juiz de Fora, Juiz de Fora, Minas Gerais, Brazil
| | - Izabel Almeida Alves
- Faculty of Pharmacy, Medicine Department, Federal University of Bahia, Salvador, Bahia, Brazil
| | - Fernanda Maria Pinto Vilela
- Faculty of Pharmacy, Pharmaceutical Sciences Department, Federal University of Juiz de Fora, Juiz de Fora, Minas Gerais, Brazil
| | - Dominique Mesquita E Silva
- Faculty of Pharmacy, Pharmaceutical Sciences Department, Federal University of Juiz de Fora, Juiz de Fora, Minas Gerais, Brazil
| | | | | | - Juliana de Carvalho da Costa
- Faculty of Pharmacy, Pharmaceutical Sciences Department, Federal University of Juiz de Fora, Juiz de Fora, Minas Gerais, Brazil.
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Effect of Dietary Supplemented with Mulberry Leaf Powder on Growth Performance, Serum Metabolites, Antioxidant Property and Intestinal Health of Weaned Piglets. Antioxidants (Basel) 2023; 12:antiox12020307. [PMID: 36829865 PMCID: PMC9952558 DOI: 10.3390/antiox12020307] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2022] [Revised: 01/22/2023] [Accepted: 01/23/2023] [Indexed: 01/31/2023] Open
Abstract
Background: The study aimed to explore the effect of mulberry leaf powder (MP) on the performance, serum metabolites and antioxidant property, as well as intestinal health, of weaned piglets. A total of 120 healthy piglets weighing 8.43 ± 1.91 kg (Duroc × (Landrace × Yorkshire); weaned at 28 d) were chosen and classified into four treatments with three replicates of 10 piglets each based on a randomized complete block design (barrow:gilt = 1:1). The diet treatments were a corn-soybean meal basal diet added with 0% (Ctrl), 2% (MP_2), 4% (MP_4) and 6% MP (MP_6), respectively. The feeding experiment was 28 days in total. The feeding period lasted for 28 days in total. Results: The diet supplemented with 2% MP had no detrimental effects on the growth performance, immunity, enzyme capacity and inflammatory factors, as well as intestinal barrier function. MP_2 is capable of decreasing the levels of serum D-lactic acid and lactate dehydrogenase, enhancing the superoxide dismutase capacity in the liver and diminishing the potential pathogenic bacteria Allisonella in the colon. However, compared with MP_2, MP_6 had unfavorable effects on the average daily gain and average daily feed intake; the concentration of serum non-esterified fatty acids; the activities of superoxide dismutase and glutathione peroxidase and the capacity of lipase and amylase, as well as the intestinal barrier function-related mRNA expression of occludin, claudin-1 and mucin-2 in piglets. Conclusion: Taken together, piglets fed with 2% MP had no adverse effect and was capable of improving the serum metabolites, enhancing the antioxidant capacity (SOD) and lowering the potential pathogenic bacteria of the hindgut (Allisonella). However, the highest concentration of MP (6%) may cause detrimental effects for piglets, which are probably associated with the higher antinutritional factors and fiber. Therefore, the dietary supplementation of 2% MP for piglets may be advisable.
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Development of Probiotic-Fermented Black Mulberry (Morus nigra L.) Juice and Its Antioxidant Activity in C2C12 Cells. FERMENTATION-BASEL 2022. [DOI: 10.3390/fermentation8120697] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/04/2022]
Abstract
Black mulberry (Morus nigra L.) is considered a medicinal and food-homologous plant in China. An obstacle to its widespread use is that its annual season and shelf life are extremely short. In this paper, fermented black mulberry juice (FBMJ) was prepared with various probiotic strains, and response surface methodology was used to determine the optimum production conditions for achieving the maximum active substance content in the resulting product. The fermentation process increased levels of biological enzymes and total phenols in the resulting juice. When the ratios of the Lactobacillus inocula to the total inoculum were 27.96% for L. paracasei, 15.37% for L. casei, 16.64% for L. plantarum, and 5.12% for L. delbrueckii, the B. animalis subsp. lactis content reached 15.83%, the L. fermentum content reached 19.08%, and the superoxide dismutase (SOD) activity reached 310 U/g. To study the antioxidant characteristics of the juice, C2C12 cells were treated with H2O2 to induce oxidative stress and the cytoprotective activity of FBMJ was subsequently evaluated. After treatment with FBMJ for 24 h, cell viability was found to be protected under H2O2 exposure, while SOD and glutathione peroxidase (GSH-Px) levels were increased. The reactive oxygen species level and malondialdehyde content were also decreased. These results provide molecular evidence for the antioxidant effect of FBMJ and demonstrate that lactic acid bacteria fermentation has a positive effect on black mulberry juice (BMJ).
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Wang Y, Xu Y, Liu Z. A review of plant antipathogenic constituents: Source, activity and mechanism. PESTICIDE BIOCHEMISTRY AND PHYSIOLOGY 2022; 188:105225. [PMID: 36464345 DOI: 10.1016/j.pestbp.2022.105225] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/06/2022] [Revised: 07/25/2022] [Accepted: 09/05/2022] [Indexed: 06/17/2023]
Abstract
Green prevention and control of plant pathogens is a development direction of sustainable and low-carbon agriculture given the limitation of traditional chemicals. Plant-derived antipathogenic constituents (PAPCs) exhibit the advantages of being environmental benign and a broad spectrum of target pathogens over traditional chemicals. Here, we review the research advances on plant sources, chemical compositions, activities of antipathogenic constituents in the past 20 years. Reported PAPCs are classified into categories of phenols, flavonoids, terpenoids, alkaloids and antimicrobial peptides. Angiosperms, gymnosperms and some lower plants are the main plant source of detected PAPCs. The PAPCs act on pathogens through multiple pathways including destroying cell structures, blocking key composition synthesis and inhibiting cell metabolism. The development trends of PAPCs are finally prospected. This review serves as a comprehensive review on the study of plant antipathogenic constituents and a key reference for forecasting the source, characteristic and activity of PAPC.
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Affiliation(s)
- Yueyao Wang
- Laboratory of Environment-Enhancing Energy (E2E), Key Laboratory of Agricultural Engineering in Structure and Environment of Ministry of Agriculture and Rural Affairs, College of Water Resources and Civil Engineering, China Agricultural University, Beijing 100083, China
| | - Yongdong Xu
- Laboratory of Environment-Enhancing Energy (E2E), Key Laboratory of Agricultural Engineering in Structure and Environment of Ministry of Agriculture and Rural Affairs, College of Water Resources and Civil Engineering, China Agricultural University, Beijing 100083, China
| | - Zhidan Liu
- Laboratory of Environment-Enhancing Energy (E2E), Key Laboratory of Agricultural Engineering in Structure and Environment of Ministry of Agriculture and Rural Affairs, College of Water Resources and Civil Engineering, China Agricultural University, Beijing 100083, China.
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Liu P, Zhu Y, Ye J, Lin T, Lv Z, Xu Z, Xu L, Chen L, Wei J. Biological characteristics, bioactive compounds, and antioxidant activities of off-season mulberry fruit. FRONTIERS IN PLANT SCIENCE 2022; 13:1034013. [PMID: 36407578 PMCID: PMC9667739 DOI: 10.3389/fpls.2022.1034013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/01/2022] [Accepted: 10/10/2022] [Indexed: 06/16/2023]
Abstract
To understand the yield and quality of off-season mulberry fruits, which are cultivated in open fields from autumn, the biological characteristics, bioactive compounds, and antioxidant activities of them were analyzed. Compared with mulberry fruits in normal season, the fruit length, fruit diameter, single fruit weight, fruit yield per meter strip, and the fruits yield per 667 m2 are significantly lower. The moisture content and juice yield of off-season mulberry fruits are lower than the mulberry fruits in normal season; the pH and soluble solids are higher. The contents of mass fraction of crude protein, total sugar, reducing sugar, total acids, total anthocyanins, and total flavonoids decreased significantly in all batches of off-season mulberry fruits compared with those of normal season. Of off-season mulberry fruits, the contents of glucose, fructose and sucrose, expression, anthocyanin biosynthesis genes, and antioxidant capacity are significantly lower than those in normal season.
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Affiliation(s)
- Peigang Liu
- Institute of Sericulture and Tea, Zhejiang Academy of Agricultural Sciences, Hangzhou, China
| | - Yan Zhu
- Institute of Sericulture and Tea, Zhejiang Academy of Agricultural Sciences, Hangzhou, China
| | - Jingjing Ye
- Sericultural Research Institute, Sichuan Academy of Agricultural Sciences, Nanchong, China
| | - Tianbao Lin
- Institute of Sericulture and Tea, Zhejiang Academy of Agricultural Sciences, Hangzhou, China
| | - Zhiqiang Lv
- Institute of Sericulture and Tea, Zhejiang Academy of Agricultural Sciences, Hangzhou, China
| | - Zilong Xu
- Institute of Sericulture and Tea, Zhejiang Academy of Agricultural Sciences, Hangzhou, China
| | - Lushan Xu
- Economic Specialty Technology Extension Station, Jinhua Municipal Bureau of Agriculture and Rural Affairs, Jinhua, China
| | - Leyang Chen
- Economic Specialty Technology Extension Station, Jinhua Municipal Bureau of Agriculture and Rural Affairs, Jinhua, China
| | - Jia Wei
- Institute of Sericulture and Tea, Zhejiang Academy of Agricultural Sciences, Hangzhou, China
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Hu Y, Chen X, Hu M, Zhang D, Yuan S, Li P, Feng L. Medicinal and edible plants in the treatment of dyslipidemia: advances and prospects. Chin Med 2022; 17:113. [PMID: 36175900 PMCID: PMC9522446 DOI: 10.1186/s13020-022-00666-9] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2022] [Accepted: 08/29/2022] [Indexed: 11/10/2022] Open
Abstract
Dyslipidemia is an independent risk factor of cardiovascular diseases (CVDs), which lead to the high mortality, disability, and medical expenses in the worldwide. Based on the previous researches, the improvement of dyslipidemia could efficiently prevent the occurrence and progress of cardiovascular diseases. Medicinal and edible plants (MEPs) are the characteristics of Chinese medicine, and could be employed for the disease treatment and health care mostly due to their homology of medicine and food. Compared to the lipid-lowering drugs with many adverse effects, such as rhabdomyolysis and impaired liver function, MEPs exhibit the great potential in the treatment of dyslipidemia with high efficiency, good tolerance and commercial value. In this review, we would like to introduce 20 kinds of MEPs with lipid-lowering effect in the following aspects, including the source, function, active component, target and underlying mechanism, which may provide inspiration for the development of new prescription, functional food and complementary therapy for dyslipidemia.
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Affiliation(s)
- Ying Hu
- China Academy of Chinese Medical Sciences Guang'anmen Hospital, Beijing, 100053, China.,China Academy of Chinese Medical Sciences, Beijing, 100700, China.,Beijing University of Chinese Medicine, Beijing, 100029, China
| | - Xingjuan Chen
- China Academy of Chinese Medical Sciences Guang'anmen Hospital, Beijing, 100053, China
| | - Mu Hu
- China Academy of Chinese Medical Sciences Guang'anmen Hospital, Beijing, 100053, China.,China Academy of Chinese Medical Sciences, Beijing, 100700, China
| | - Dongwei Zhang
- The First Affiliated Hospital of Zhengzhou University, Zhengzhou, 450000, China
| | - Shuo Yuan
- Henan Key Laboratory of Children's Genetics and Metabolic Diseases, Children's Hospital Affiliated to Zhengzhou University, Henan Children's Hospital, Zhengzhou Children's Hospital, Zhengzhou, 450018, China.
| | - Ping Li
- Beijing University of Chinese Medicine, Beijing, 100029, China. .,Beijing University of Chinese Medicine Third Affiliated Hospital, Beijing, 100029, China.
| | - Ling Feng
- China Academy of Chinese Medical Sciences Guang'anmen Hospital, Beijing, 100053, China. .,China Academy of Chinese Medical Sciences, Beijing, 100700, China.
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Wang D, Zhao L, Wan J, Liu J, Wei Y, Ouyang Z, Yu X. Molecular cloning, expression, and functional analysis of copper amine oxidase gene from mulberry (Morus alba L.). Protein Expr Purif 2022; 201:106166. [PMID: 36174814 DOI: 10.1016/j.pep.2022.106166] [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: 09/27/2021] [Revised: 08/23/2022] [Accepted: 08/24/2022] [Indexed: 11/25/2022]
Abstract
In this study, we investigated a key enzyme encoded by the gene copper amine oxidase (MaCAO), which is involved in the biosynthetic pathway of 1-deoxynojirimycin (DNJ)1, an active ingredient in mulberry leaves. The 1680 bp long MaCAO was successfully cloned (GenBank accession no: MH205733). Subsequently, MaCAO was heterologously expressed using a recombinant plasmid, pET-22b (+)/MaCAO in Escherichia coli BL21 (DE3). A protein with a molecular mass of 62.9 kDa was obtained, whose function was validated through enzymatic reaction. Bioinformatics analysis identified that MaCAO contained the same conserved domain as that of copper amine oxidases ("NYDY"). Furthermore, the tertiary structure of the predicted protein using homology modeling revealed 46% similarity with that of copper amine oxidase (Protein Data Bank ID: 1W2Z). Gas chromatography-mass spectrometry analysis of the enzymatic reaction revealed that MaCAO could catalyze 1,5-pentanediamine to produce 5-aminopentanal. Additionally, levels of mulberry leaf DNJ content were significantly positively correlated with expression levels of MaCAO (P < 0.001). Our results conclude that MaCAO is the key enzyme involved in the biosynthetic pathway of DNJ. The function of MaCAO is validated, providing a foundation for the further analysis of biosynthetic pathways of DNJ in mulberry leaves using tools of synthetic biology.
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Affiliation(s)
- Dujun Wang
- School of Marine and Bioengineering, Yancheng Institute of Technology, Yancheng, 224051, China
| | - Li Zhao
- School of Pharmacy, Jiangsu University, Zhenjiang, Jiangsu, 212013, China
| | - Jingqiong Wan
- School of Pharmacy, Jiangsu University, Zhenjiang, Jiangsu, 212013, China
| | - Jia Liu
- School of Pharmacy, Jiangsu University, Zhenjiang, Jiangsu, 212013, China
| | - Yuan Wei
- School of Pharmacy, Jiangsu University, Zhenjiang, Jiangsu, 212013, China
| | - Zhen Ouyang
- School of Pharmacy, Jiangsu University, Zhenjiang, Jiangsu, 212013, China.
| | - Xiaohong Yu
- School of Marine and Bioengineering, Yancheng Institute of Technology, Yancheng, 224051, China
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Lin YR, Guan QY, Li LY, Tang ZM, Zhang Q, Zhao XH. In Vitro Immuno-Modulatory Potentials of Purslane ( Portulaca oleracea L.) Polysaccharides with a Chemical Selenylation. Foods 2021; 11:foods11010014. [PMID: 35010140 PMCID: PMC8750528 DOI: 10.3390/foods11010014] [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: 11/18/2021] [Revised: 12/13/2021] [Accepted: 12/18/2021] [Indexed: 02/06/2023] Open
Abstract
The soluble polysaccharides from a non-conventional and edible plant purslane (Portulaca oleracea L.), namely PSPO, were prepared by the water extraction and ethanol precipitation methods in this study. The obtained PSPO were selenylated using the Na2SeO3-HNO3 method to successfully prepare two selenylated products, namely SePSPO-1 and SePSPO-2, with different selenylation extents. The assay results confirmed that SePSPO-1 and SePSPO-2 had respective Se contents of 753.8 and 1325.1 mg/kg, while PSPO only contained Se element about 80.6 mg/kg. The results demonstrated that SePSPO-1 and SePSPO-2 had higher immune modulation than PSPO (p < 0.05), when using the two immune cells (murine splenocytes and RAW 264.7 macrophages) as two cell models. Specifically, SePSPO-1 and SePSPO-2 were more active than PSPO in the macrophages, resulting in higher cell proliferation, greater macrophage phagocytosis, and higher secretion of the immune-related three cytokines, including tumor necrosis factor-α (TNF-α), interleukin-6 (IL-6), and IL-1β. Meanwhile, SePSPO-1 and SePSPO-2 were more potent than PSPO in the concanavalin A- or lipopolysaccharide-stimulated splenocytes in cell proliferation, or more able than PSPO in the splenocytes to promote interferon-γ secretion but suppress IL-4 secretion, or more capable of enhancing the ratio of T-helper (CD4+) cells to T-cytotoxic (CD8+) cells for the T lymphocytes than PSPO. Overall, the higher selenylation extent of the selenylated PSPO mostly caused higher immune modulation in the model cells, while a higher polysaccharide dose consistently led to the greater regulation effect. Thus, it is concluded that the employed chemical selenylation could be used in the chemical modification of purslane or other plant polysaccharides, when aiming to endow the polysaccharides with higher immuno-modulatory effect on the two immune cells.
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Affiliation(s)
- Ya-Ru Lin
- School of Biology and Food Engineering, Guangdong University of Petrochemical Technology, Maoming 525000, China; (Y.-R.L.); (Q.-Y.G.); (L.-Y.L.); (Z.-M.T.); (Q.Z.)
| | - Qing-Yun Guan
- School of Biology and Food Engineering, Guangdong University of Petrochemical Technology, Maoming 525000, China; (Y.-R.L.); (Q.-Y.G.); (L.-Y.L.); (Z.-M.T.); (Q.Z.)
| | - Ling-Yu Li
- School of Biology and Food Engineering, Guangdong University of Petrochemical Technology, Maoming 525000, China; (Y.-R.L.); (Q.-Y.G.); (L.-Y.L.); (Z.-M.T.); (Q.Z.)
| | - Zhi-Mei Tang
- School of Biology and Food Engineering, Guangdong University of Petrochemical Technology, Maoming 525000, China; (Y.-R.L.); (Q.-Y.G.); (L.-Y.L.); (Z.-M.T.); (Q.Z.)
- Research Centre of Food Nutrition and Human Healthcare, Guangdong University of Petrochemical Technology, Maoming 525000, China
| | - Qiang Zhang
- School of Biology and Food Engineering, Guangdong University of Petrochemical Technology, Maoming 525000, China; (Y.-R.L.); (Q.-Y.G.); (L.-Y.L.); (Z.-M.T.); (Q.Z.)
- Research Centre of Food Nutrition and Human Healthcare, Guangdong University of Petrochemical Technology, Maoming 525000, China
| | - Xin-Huai Zhao
- School of Biology and Food Engineering, Guangdong University of Petrochemical Technology, Maoming 525000, China; (Y.-R.L.); (Q.-Y.G.); (L.-Y.L.); (Z.-M.T.); (Q.Z.)
- Research Centre of Food Nutrition and Human Healthcare, Guangdong University of Petrochemical Technology, Maoming 525000, China
- Maoming Branch, Guangdong Laboratory for Lingnan Modern Agriculture, Guangdong University of Petrochemical Technology, Maoming 525000, China
- Correspondence:
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