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An L, Chang G, Zhang L, Wang P, Gao W, Li X. Pectin: Health-promoting properties as a natural galectin-3 inhibitor. Glycoconj J 2024; 41:93-118. [PMID: 38630380 DOI: 10.1007/s10719-024-10152-z] [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: 11/07/2023] [Revised: 12/17/2023] [Accepted: 04/10/2024] [Indexed: 05/03/2024]
Abstract
Galectin-3 has a variety of important pathophysiological significance in the human body. Much evidence shows that the abnormal expression of galectin-3 is related to the formation and development of many diseases. Pectin is mostly obtained from processed citrus fruits and apples and is a known natural inhibitor of galactin-3. A large number of peels produced each year are discarded, and it is necessary to recycle some of the economically valuable active compounds in these by-products to reduce resource waste and environmental pollution. By binding with galectin-3, pectin can directly reduce the expression level of galectin-3 on the one hand, and regulate the expression level of cytokines by regulating certain signaling pathways on the other hand, to achieve the effect of treating diseases. This paper begins by presenting an overview of the basic structure of pectin, subsequently followed by a description of the structure of galectin-3 and its detrimental impact on human health when expressed abnormally. The health effects of pectin as a galectin-3 inhibitor were then summarized from the perspectives of anticancer, anti-inflammatory, ameliorating fibrotic diseases, and anti-diabetes. Finally, the challenges and prospects of future research on pectin are presented, which provide important references for expanding the application of pectin in the pharmaceutical industry or developing functional dietary supplements.
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Affiliation(s)
- Lingzhuo An
- Tianjin Key Laboratory for Modern Drug Delivery & High-Efficiency, School of Pharmaceutical Science and Technology, Tianjin University, No. 92 Weijin Road, Nankai District, Tianjin, 300193, China
| | - Guanglu Chang
- Key Laboratory of Modern Chinese Medicine Resources Research Enterprises, Tianjin, 300402, China
| | - Luyao Zhang
- Tianjin Key Laboratory for Modern Drug Delivery & High-Efficiency, School of Pharmaceutical Science and Technology, Tianjin University, No. 92 Weijin Road, Nankai District, Tianjin, 300193, China
| | - Pengwang Wang
- Tianjin Key Laboratory for Modern Drug Delivery & High-Efficiency, School of Pharmaceutical Science and Technology, Tianjin University, No. 92 Weijin Road, Nankai District, Tianjin, 300193, China
| | - Wenyuan Gao
- Tianjin Key Laboratory for Modern Drug Delivery & High-Efficiency, School of Pharmaceutical Science and Technology, Tianjin University, No. 92 Weijin Road, Nankai District, Tianjin, 300193, China.
| | - Xia Li
- Tianjin Key Laboratory for Modern Drug Delivery & High-Efficiency, School of Pharmaceutical Science and Technology, Tianjin University, No. 92 Weijin Road, Nankai District, Tianjin, 300193, China.
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Picot-Allain MCN, Neergheen VS. Pectin a multifaceted biopolymer in the management of cancer: A review. Heliyon 2023; 9:e22236. [PMID: 38058641 PMCID: PMC10696011 DOI: 10.1016/j.heliyon.2023.e22236] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2023] [Revised: 09/21/2023] [Accepted: 11/07/2023] [Indexed: 12/08/2023] Open
Abstract
This review article focuses on the multifaceted roles of pectin in cancer management, namely as an oncotherapeutic delivery vehicle and a pharmacological agent. Over the past decades, the potential of pectin as a novel therapeutical agent for the prevention and/or management of cancer has gained increasing interest. Pectin has been found to modulate different mechanisms involved in the onset and progression of carcinogenesis, such as galectin-3 inhibition, caspase-3-induced apoptosis, and autophagy. Elucidating the structure-activity relationship provides insight into the relationship between the structure of pectin and different mechanism/s. The bioactivity of pectin, with respect to its structure, was critically discussed to give a better insight of the relationship between the structure of the extracted pectin and the observed bioactive effects. The rhamnogalacturonan I part of the pectin chain was found to bind to galectin-3, associated with several cancer hallmarks. The anti-inflammatory and antioxidant potential of pectin were also described. The roles of pectin as a treatment enhancer and a drug delivery vehicle for oncotherapeutics were critically defined. The scientific findings presented in this paper are expected to highlight the potential and role of pectin recovered from various plant sources in preventing and managing cancer.
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Affiliation(s)
- Marie Carene Nancy Picot-Allain
- Biopharmaceutical Unit, Centre for Biomedical and Biomaterials Research, University of Mauritius, Réduit 80837, Mauritius
- Future Africa, University of Pretoria, South Africa
| | - Vidushi Shradha Neergheen
- Biopharmaceutical Unit, Centre for Biomedical and Biomaterials Research, University of Mauritius, Réduit 80837, Mauritius
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Emran TB, Islam F, Mitra S, Paul S, Nath N, Khan Z, Das R, Chandran D, Sharma R, Lima CMG, Awadh AAA, Almazni IA, Alhasaniah AH, Guiné RPF. Pectin: A Bioactive Food Polysaccharide with Cancer Preventive Potential. Molecules 2022; 27:7405. [PMID: 36364232 PMCID: PMC9657392 DOI: 10.3390/molecules27217405] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2022] [Revised: 10/25/2022] [Accepted: 10/26/2022] [Indexed: 07/30/2023] Open
Abstract
Pectin is an acidic heteropolysaccharide found in the cell walls and the primary and middle lamella of land plants. To be authorized as a food additive, industrial pectins must meet strict guidelines set forth by the Food and Agricultural Organization and must contain at least 65% polygalacturonic acid to achieve the E440 level. Fruit pectin derived from oranges or apples is commonly used in the food industry to gel or thicken foods and to stabilize acid-based milk beverages. It is a naturally occurring component and can be ingested by dietary consumption of fruit and vegetables. Preventing long-term chronic diseases like diabetes and heart disease is an important role of dietary carbohydrates. Colon and breast cancer are among the diseases for which data suggest that modified pectin (MP), specifically modified citrus pectin (MCP), has beneficial effects on the development and spread of malignancies, in addition to its benefits as a soluble dietary fiber. Cellular and animal studies and human clinical trials have provided corroborating data. Although pectin has many diverse functional qualities, this review focuses on various modifications used to develop MP and its benefits for cancer prevention, bioavailability, clinical trials, and toxicity studies. This review concludes that pectin has anti-cancer characteristics that have been found to inhibit tumor development and proliferation in a wide variety of cancer cells. Nevertheless, further clinical and basic research is required to confirm the chemopreventive or therapeutic role of specific dietary carbohydrate molecules.
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Affiliation(s)
- Talha Bin Emran
- Department of Pharmacy, BGC Trust University Bangladesh, Chittagong 4381, Bangladesh
- Department of Pharmacy, Faculty of Allied Health Sciences, Daffodil International University, Dhaka 1207, Bangladesh
| | - Fahadul Islam
- Department of Pharmacy, Faculty of Allied Health Sciences, Daffodil International University, Dhaka 1207, Bangladesh
| | - Saikat Mitra
- Department of Pharmacy, Faculty of Pharmacy, University of Dhaka, Dhaka 1000, Bangladesh
| | - Shyamjit Paul
- Department of Pharmacy, Faculty of Pharmacy, University of Dhaka, Dhaka 1000, Bangladesh
| | - Nikhil Nath
- Department of Pharmacy, International Islamic University Chittagong, Chittagong 4318, Bangladesh
| | - Zidan Khan
- Department of Pharmacy, International Islamic University Chittagong, Chittagong 4318, Bangladesh
| | - Rajib Das
- Department of Pharmacy, Faculty of Pharmacy, University of Dhaka, Dhaka 1000, Bangladesh
| | - Deepak Chandran
- Department of Veterinary Sciences and Animal Husbandry, Amrita School of Agricultural Sciences, Amrita Vishwa Vidyapeetham University, Coimbatore 642109, Tamil Nadu, India
| | - Rohit Sharma
- Department of Rasa Shastra and Bhaishajya Kalpana, Faculty of Ayurveda, Institute of Medical Sciences, Banaras Hindu University, Varanasi 221005, Uttar Pradesh, India
| | | | - Ahmed Abdullah Al Awadh
- Department of Clinical Laboratory Sciences, Faculty of Applied Medical Sciences, Najran University, P.O. Box 1988, Najran 61441, Saudi Arabia
| | - Ibrahim Abdullah Almazni
- Department of Clinical Laboratory Sciences, Faculty of Applied Medical Sciences, Najran University, P.O. Box 1988, Najran 61441, Saudi Arabia
| | - Abdulaziz Hassan Alhasaniah
- Department of Clinical Laboratory Sciences, Faculty of Applied Medical Sciences, Najran University, P.O. Box 1988, Najran 61441, Saudi Arabia
| | - Raquel P. F. Guiné
- CERNAS Research Centre, Department of Food Industry, Polytechnic Institute of Viseu, 3504-510 Viseu, Portugal
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Structure and bioactivity of apple pectin isolated with arabinanase and mannanase. Food Chem 2022; 388:133020. [PMID: 35483285 DOI: 10.1016/j.foodchem.2022.133020] [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: 12/08/2021] [Revised: 04/12/2022] [Accepted: 04/18/2022] [Indexed: 11/23/2022]
Abstract
It was assumed that, high purity endo-arabinanase and endo-mannanase could be useful in the isolation of pectin of enhanced health-promoting potential. Extraction was carried out with 50 U of enzymes per gram of apple pomace at 40 °C, obtaining up to 22% increase in effectiveness, as compared to the acid extraction. The pectins, despite their high Mw, were homogeneous and contained more galacturonic acid, rhamnose, galactose, fucose, and ferulic acid than the conventional product, thanks to which they quenched free radicals up to five times more efficiently. Compared with pectin with recognised anticancer and prebiotic activity, they had a significantly greater ability to inhibit proliferation and migration of HT-29 and B16F10 cells. They were also more effective in preventing the adhesion of E. coli and S. typhimurium to enterocytes. Endo-arabinanase- and endo-mannanase-assisted extraction is an effective method of obtaining pectins with enhanced antiradical, anticancer and prebiotic potential.
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Mohammed NBB, Antonopoulos A, Dell A, Haslam SM, Dimitroff CJ. The pleiotropic role of galectin-3 in melanoma progression: Unraveling the enigma. Adv Cancer Res 2022; 157:157-193. [PMID: 36725108 PMCID: PMC9895887 DOI: 10.1016/bs.acr.2022.06.001] [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] [Indexed: 02/05/2023]
Abstract
Melanoma is a highly aggressive skin cancer with poor outcomes associated with distant metastasis. Intrinsic properties of melanoma cells alongside the crosstalk between melanoma cells and surrounding microenvironment determine the tumor behavior. Galectin-3 (Gal-3), a ß-galactoside-binding lectin, has emerged as a major effector in cancer progression, including melanoma behavior. Data from melanoma models and patient studies reveal that Gal-3 expression is dysregulated, both intracellularly and extracellularly, throughout the stages of melanoma progression. This review summarizes the most recent data and hypotheses on Gal-3 and its tumor-modulating functions, highlighting its role in driving melanoma growth, invasion, and metastatic colonization. It also provides insight into potential Gal-3-targeted strategies for melanoma diagnosis and treatment.
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Affiliation(s)
- Norhan B B Mohammed
- Department of Translational Medicine, Translational Glycobiology Institute at FIU (TGIF), Herbert Wertheim College of Medicine, Florida International University, Miami, FL, United States; Department of Medical Biochemistry, Faculty of Medicine, South Valley University, Qena, Egypt
| | | | - Anne Dell
- Department of Life Sciences, Imperial College London, London, United Kingdom
| | - Stuart M Haslam
- Department of Life Sciences, Imperial College London, London, United Kingdom
| | - Charles J Dimitroff
- Department of Translational Medicine, Translational Glycobiology Institute at FIU (TGIF), Herbert Wertheim College of Medicine, Florida International University, Miami, FL, United States.
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Enzymatically Extracted Apple Pectin Possesses Antioxidant and Antitumor Activity. Molecules 2021; 26:molecules26051434. [PMID: 33800895 PMCID: PMC7961577 DOI: 10.3390/molecules26051434] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2021] [Revised: 02/25/2021] [Accepted: 03/02/2021] [Indexed: 12/24/2022] Open
Abstract
The biological activity of apple pectin extracted conventionally or enzymatically using endo-xylanase and endo-cellulase, was tested in vitro. The analyses were performerd in tetraplicates and the statistical significance of the differences were assessed using ANOVA, Tukey post hoc and LSD (the least significant difference) tests. Multivariate regression analysis was applied to determine the structural components that have a crucial importance for antioxidant and antitumor properties of pectins. The pectins extracted by enzymes contained up to four times more ferulic acid and showed twice as great ability to neutralize free radicals and Fe(III) reduction. The antiradical potential positively correlated with phenols, fucose and rhamnose content. In the assays performed on HT-29 human adenocarcinoma and B16F10 melanoma cell cultures, the “green” pectins, contrary to acid isolated ones, exhibited remarkable anti-neoplastic potential while being nontoxic to nontransformed L929 cell line. The pectins in the dose of 1 mg/mL were capable of inhibiting adhesion (max 23.1%), proliferation (max 40.4%), invasion (max 76.9%) and anchorage-independent growth (max 90%) of HT-29 cells (significance level p < 0.001). These pectin preparations were slightly less active towards B16F10 cells. The enzyme-isolated apple pectins may be useful as a functional food additive and an ingredient of the ointment formulas for post-surgical melanoma treatment.
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Shen Y, Liang J, Guo YL, Li Y, Kuang HX, Xia YG. Ultrafiltration isolation, structures and anti-tumor potentials of two arabinose- and galactose-rich pectins from leaves of Aralia elata. Carbohydr Polym 2021; 255:117326. [DOI: 10.1016/j.carbpol.2020.117326] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2020] [Revised: 10/12/2020] [Accepted: 10/25/2020] [Indexed: 12/11/2022]
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Xiong B, Zhang W, Wu Z, Liu R, Yang C, Hui A, Huang X, Xian Z. Okra pectin relieves inflammatory response and protects damaged intestinal barrier in caerulein-induced acute pancreatic model. JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE 2021; 101:863-870. [PMID: 33433910 DOI: 10.1002/jsfa.10693] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/17/2020] [Revised: 07/09/2020] [Accepted: 07/29/2020] [Indexed: 06/12/2023]
Abstract
BACKGROUND Protecting the intestinal mucosa from being destroyed helps reduce the inflammation caused by acute pancreatitis (AP). In this study, whether okra pectin (OP) could attenuate the inflammation of AP through protecting the intestinal barrier was investigated. RESULTS OP was obtained from crude okra pectin (COP) through the purification by DEAE cellulose 52 column. Supplementation with OP or COP in advance reduced the severity of AP, as revealed by lower serum amylase and lipase levels, abated pancreatic edema, attenuated myeloperoxidase activity and pancreas histology. OP or COP inhibited the production of pancreatic proinflammatory cytokines, including tumor necrosis factor-α and interleukin-6. In addition, the upregulation of AP-related proteins including ZO-1, occludin, the antibacterial peptide-defensin-1 (DEFB1) and cathelicidin-related antimicrobial peptide (CRAMP), as well as the histological examination of colon injuries, demonstrated that OP or COP provision could effectively maintain intestinal barrier function. Ultimately, dietary OP or COP supplementation could inhibit AP-induced intestinal inflammation. For the above, the effect of OP was better than COP. CONCLUSION Dietary OP supplementation could be considered as a preventive method that effectively interferes with intestinal damage and attenuates inflammatory responses trigged by AP. © 2020 Society of Chemical Industry.
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Affiliation(s)
- Baoyi Xiong
- Engineering Research Center of Bio-Process of Ministry of Education, School of Food and Biological Engineering, Hefei University of Technology, Hefei, China
| | - Wencheng Zhang
- Engineering Research Center of Bio-Process of Ministry of Education, School of Food and Biological Engineering, Hefei University of Technology, Hefei, China
| | - Zeyu Wu
- Engineering Research Center of Bio-Process of Ministry of Education, School of Food and Biological Engineering, Hefei University of Technology, Hefei, China
| | - Rui Liu
- Engineering Research Center of Bio-Process of Ministry of Education, School of Food and Biological Engineering, Hefei University of Technology, Hefei, China
| | - Chengying Yang
- Engineering Research Center of Bio-Process of Ministry of Education, School of Food and Biological Engineering, Hefei University of Technology, Hefei, China
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9
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Okra ( Abelmoschus Esculentus) as a Potential Dietary Medicine with Nutraceutical Importance for Sustainable Health Applications. Molecules 2021; 26:molecules26030696. [PMID: 33525745 PMCID: PMC7865958 DOI: 10.3390/molecules26030696] [Citation(s) in RCA: 53] [Impact Index Per Article: 17.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2021] [Revised: 01/20/2021] [Accepted: 01/22/2021] [Indexed: 02/07/2023] Open
Abstract
Recently, there has been a paradigm shift from conventional therapies to relatively safer phytotherapies. This divergence is crucial for the management of various chronic diseases. Okra (Abelmoschus esculentus L.) is a popular vegetable crop with good nutritional significance, along with certain therapeutic values, which makes it a potential candidate in the use of a variety of nutraceuticals. Different parts of the okra fruit (mucilage, seed, and pods) contain certain important bioactive components, which confer its medicinal properties. The phytochemicals of okra have been studied for their potential therapeutic activities on various chronic diseases, such as type-2 diabetes, cardiovascular, and digestive diseases, as well as the antifatigue effect, liver detoxification, antibacterial, and chemo-preventive activities. Moreover, okra mucilage has been widely used in medicinal applications such as a plasma replacement or blood volume expanders. Overall, okra is considered to be an easily available, low-cost vegetable crop with various nutritional values and potential health benefits. Despite several reports about its therapeutic benefits and potential nutraceutical significance, there is a dearth of research on the pharmacokinetics and bioavailability of okra, which has hampered its widespread use in the nutraceutical industry. This review summarizes the available literature on the bioactive composition of okra and its potential nutraceutical significance. It will also provide a platform for further research on the pharmacokinetics and bioavailability of okra for its possible commercial production as a therapeutic agent against various chronic diseases.
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Zhu XM, Xu R, Wang H, Chen JY, Tu ZC. Structural Properties, Bioactivities, and Applications of Polysaccharides from Okra [ Abelmoschus esculentus (L.) Moench]: A Review. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2020; 68:14091-14103. [PMID: 33205968 DOI: 10.1021/acs.jafc.0c04475] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Okra [Abelmoschus esculentus (L.) Moench], as a kind of nutritive vegetable, is rich in flavonoids, polyphenols, polysaccharides, amino acids, and other bioactive substances and has various biological activities. As one of main bioactive components, okra polysaccharides (OPs), mainly comprising pectic polysaccharides, have various biological activities. OPs have been extensively investigated in recent years. Many studies characterized structures of OPs obtained by different extraction methods, which were confirmed to be rhamnogalacturonan-I-type polysaccharides in most cases. OPs have a thick and slimy texture, suggesting that they can be a promising source of texture modifiers for complex food matrices. They have various biological activities, such as antioxidant activity, immunomodulatory activity, hypoglycaemic activity, and improving intestinal function. Therefore, OPs may potentially serve as novel immunomodulators or an adjuvant for diabetic nephropathy. Up to now, there is no specific summary on the research progress of OPs. In this paper, the latest research progress on the extraction, purification, characterization, rheological properties, biological activities, and applications of OPs is reviewed, to provide the reference for the processing and comprehensive utilization of OPs in the future.
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Affiliation(s)
- Xiu-Mei Zhu
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang, Jiangxi 330047, People's Republic of China
| | - Rou Xu
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang, Jiangxi 330047, People's Republic of China
| | - Hui Wang
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang, Jiangxi 330047, People's Republic of China
| | - Jin-Yin Chen
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang, Jiangxi 330047, People's Republic of China
- Jiangxi Key Laboratory for Postharvest Technology and Nondestructive Testing of Fruits & Vegetables, Collaborative Innovation Center of Post-harvest Key Technology and Quality Safety of Fruits and Vegetables in Jiangxi Province, Jiangxi Agricultural University, Nanchang, Jiangxi 330045, People's Republic of China
- College of Materials and Chemical Engineering, Pingxiang University, Pingxiang, Jiangxi 337055, People's Republic of China
| | - Zong-Cai Tu
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang, Jiangxi 330047, People's Republic of China
- Engineering Research Center of Freshwater Fish High-Value Utilization of Jiangxi Province, College of Life Sciences, Jiangxi Normal University, Nanchang, Jiangxi 330022, People's Republic of China
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Zaitseva O, Khudyakov A, Sergushkina M, Solomina O, Polezhaeva T. Pectins as a universal medicine. Fitoterapia 2020; 146:104676. [DOI: 10.1016/j.fitote.2020.104676] [Citation(s) in RCA: 39] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2020] [Revised: 05/19/2020] [Accepted: 06/10/2020] [Indexed: 02/06/2023]
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12
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Analysis of the water-soluble polysaccharides from Camellia japonica pollen and their inhibitory effects on galectin-3 function. Int J Biol Macromol 2020; 159:455-460. [DOI: 10.1016/j.ijbiomac.2020.05.051] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2020] [Revised: 04/11/2020] [Accepted: 05/07/2020] [Indexed: 12/13/2022]
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13
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Liu Y, Qi J, Luo J, Qin W, Luo Q, Zhang Q, Wu D, Lin D, Li S, Dong H, Chen D, Chen H. Okra in Food Field: Nutritional Value, Health Benefits and Effects of Processing Methods on Quality. FOOD REVIEWS INTERNATIONAL 2019. [DOI: 10.1080/87559129.2019.1695833] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Ying Liu
- College of Food Science, Sichuan Agricultural University, Yaan, Sichuan, China
| | - Jingyi Qi
- College of Food Science, Sichuan Agricultural University, Yaan, Sichuan, China
| | - Junyun Luo
- College of Food Science, Sichuan Agricultural University, Yaan, Sichuan, China
| | - Wen Qin
- College of Food Science, Sichuan Agricultural University, Yaan, Sichuan, China
| | - Qingying Luo
- College of Food Science, Sichuan Agricultural University, Yaan, Sichuan, China
| | - Qing Zhang
- College of Food Science, Sichuan Agricultural University, Yaan, Sichuan, China
| | - Dingtao Wu
- College of Food Science, Sichuan Agricultural University, Yaan, Sichuan, China
| | - Derong Lin
- College of Food Science, Sichuan Agricultural University, Yaan, Sichuan, China
| | - Suqing Li
- College of Food Science, Sichuan Agricultural University, Yaan, Sichuan, China
| | - Hongmin Dong
- Department of Agricultural, Food and Nutritional Science, University of Alberta, Edmonton, Canada
| | - Daiwen Chen
- Institute of Animal Nutrition, Sichuan Agricultural University, Chengdu, Sichuan, China
| | - Hong Chen
- College of Food Science, Sichuan Agricultural University, Yaan, Sichuan, China
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14
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Reconsidering conventional and innovative methods for pectin extraction from fruit and vegetable waste: Targeting rhamnogalacturonan I. Trends Food Sci Technol 2019. [DOI: 10.1016/j.tifs.2019.11.001] [Citation(s) in RCA: 70] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
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15
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Wang M, Gu Q, Luo Y, Bukhvalov D, Ma X, Zhu L, Li G, Luo Z. Understanding Mechanism of Adsorption in the Decolorization of Aqueous Methyl Violet (6B) Solution by Okra Polysaccharides: Experiment and Theory. ACS OMEGA 2019; 4:17880-17889. [PMID: 31681897 PMCID: PMC6822221 DOI: 10.1021/acsomega.9b02768] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/27/2019] [Accepted: 10/10/2019] [Indexed: 05/09/2023]
Abstract
Optimal conditions for ultrasonic-assisted extraction of polysaccharide from Chinese okra were found using response surface methodology. The okra polysaccharide (OPS) was used for the adsorption of methyl violet 6B (MV). Conditions for maximal adsorption efficiency of MV were established. The mechanism of MV adsorption was investigated by the characterization and physicochemical analysis of OPS before and after the adsorption of MV. Both infrared (IR) analysis and molecular dynamics (MD) simulation suggest that MV adsorption by OPS was an electrostatic interaction between MV and oxygen-containing groups of OPS. Further, the results of first-principles calculation were in agreement with IR spectroscopy measurements and MD simulation, which were all consistent with the suggested adsorption mechanism. Optimization of okra extraction conditions, maximized efficiency of MV adsorption by OPS, and the understanding of the adsorption mechanism are the highlights of this work, providing a reference for promising applications of OPS in the treatment of wastewater in textile, paper, and other industries.
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Affiliation(s)
- Mengdan Wang
- College of Science and Institute of Polymer Materials, Nanjing Forestry University, Nanjing 210037, P. R. China
| | - Qun Gu
- Department of Chemistry, Edinboro University of Pennsylvania, Edinboro, Pennsylvania 16444, United States
| | - Yanlong Luo
- College of Science and Institute of Polymer Materials, Nanjing Forestry University, Nanjing 210037, P. R. China
- E-mail:
| | - Danil Bukhvalov
- College of Science and Institute of Polymer Materials, Nanjing Forestry University, Nanjing 210037, P. R. China
| | - Xiaofeng Ma
- College of Science and Institute of Polymer Materials, Nanjing Forestry University, Nanjing 210037, P. R. China
| | - Lijun Zhu
- College of Science and Institute of Polymer Materials, Nanjing Forestry University, Nanjing 210037, P. R. China
| | - Gefei Li
- State Key
Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical
Sciences, Peking University, Beijing 100191, P. R. China
| | - Zhenyang Luo
- College of Science and Institute of Polymer Materials, Nanjing Forestry University, Nanjing 210037, P. R. China
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Wu D, Zheng J, Mao G, Hu W, Ye X, Linhardt RJ, Chen S. Rethinking the impact of RG-I mainly from fruits and vegetables on dietary health. Crit Rev Food Sci Nutr 2019; 60:2938-2960. [PMID: 31607142 DOI: 10.1080/10408398.2019.1672037] [Citation(s) in RCA: 51] [Impact Index Per Article: 10.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
Rhamnogalacturonan I (RG-I) pectin is composed of backbone of repeating disaccharide units →2)-α-L-Rhap-(1→4)-α-D-GalpA-(1→ and neutral sugar side-chains mainly consisting of arabinose and galactose having variable types of linkages. However, since traditional pectin extraction methods damages the RG-I structure, the characteristics and health effects of RG-I remains unclear. Recently, many studies have focused on RG-I, which is often more active than the homogalacturonan (HG) portion of pectic polysaccharides. In food products, RG-I is common to fruits and vegetables and possesses many health benefits. This timely and comprehensive review describes the many different facets of RG-I, including its dietary sources, history, metabolism and potential functionalities, all of which have been compiled to establish a platform for taking full advantage of the functional value of RG-I pectin.
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Affiliation(s)
- Dongmei Wu
- College of Biosystems Engineering and Food Science, National-Local Joint Engineering Laboratory of Intelligent Food Technology and Equipment, Zhejiang Key Laboratory for Agro-Food Processing, Fuli Institute of Food Science, Ningbo Research Institute, Zhejiang Engineering Laboratory of Food Technology and Equipment, Zhejiang University, Hangzhou, China
| | - Jiaqi Zheng
- College of Biosystems Engineering and Food Science, National-Local Joint Engineering Laboratory of Intelligent Food Technology and Equipment, Zhejiang Key Laboratory for Agro-Food Processing, Fuli Institute of Food Science, Ningbo Research Institute, Zhejiang Engineering Laboratory of Food Technology and Equipment, Zhejiang University, Hangzhou, China
| | - Guizhu Mao
- College of Biosystems Engineering and Food Science, National-Local Joint Engineering Laboratory of Intelligent Food Technology and Equipment, Zhejiang Key Laboratory for Agro-Food Processing, Fuli Institute of Food Science, Ningbo Research Institute, Zhejiang Engineering Laboratory of Food Technology and Equipment, Zhejiang University, Hangzhou, China
| | - Weiwei Hu
- College of Biosystems Engineering and Food Science, National-Local Joint Engineering Laboratory of Intelligent Food Technology and Equipment, Zhejiang Key Laboratory for Agro-Food Processing, Fuli Institute of Food Science, Ningbo Research Institute, Zhejiang Engineering Laboratory of Food Technology and Equipment, Zhejiang University, Hangzhou, China
| | - Xingqian Ye
- College of Biosystems Engineering and Food Science, National-Local Joint Engineering Laboratory of Intelligent Food Technology and Equipment, Zhejiang Key Laboratory for Agro-Food Processing, Fuli Institute of Food Science, Ningbo Research Institute, Zhejiang Engineering Laboratory of Food Technology and Equipment, Zhejiang University, Hangzhou, China
| | - Robert J Linhardt
- Center for Biotechnology and Interdisciplinary Studies, Rensselaer Polytechnic Institute, Troy, New York, USA
| | - Shiguo Chen
- College of Biosystems Engineering and Food Science, National-Local Joint Engineering Laboratory of Intelligent Food Technology and Equipment, Zhejiang Key Laboratory for Agro-Food Processing, Fuli Institute of Food Science, Ningbo Research Institute, Zhejiang Engineering Laboratory of Food Technology and Equipment, Zhejiang University, Hangzhou, China
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17
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Amaral SDC, Barbieri SF, Ruthes AC, Bark JM, Brochado Winnischofer SM, Silveira JLM. Cytotoxic effect of crude and purified pectins from Campomanesia xanthocarpa Berg on human glioblastoma cells. Carbohydr Polym 2019; 224:115140. [PMID: 31472853 DOI: 10.1016/j.carbpol.2019.115140] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2019] [Revised: 07/26/2019] [Accepted: 07/27/2019] [Indexed: 01/08/2023]
Abstract
A new source of pectin with a cytotoxic effect on glioblastoma cells is presented. A homogeneous GWP-FP-S fraction (Mw of 29,170 g mol-1) was obtained by fractionating the crude pectin extract (GW) from Campomanesia xanthocarpa pulp. According to the monosaccharide composition, the GWP-FP-S was composed of galacturonic acid (58.8%), arabinose (28.5%), galactose (11.3%) and rhamnose (1.1%), comprising 57.7% of homogalacturonans (HG) and 42.0% of type I rhamnogalacturonans (RG-I). These structures were characterized by chromatographic and spectroscopic methods; GW and GWP-FP-S fractions were evaluated by MTT and crystal violet assays for their cytotoxic effects. Both fractions induced cytotoxicity (15.55-37.65%) with concomitant increase in the cellular ROS levels in human glioblastoma cells at 25-400 μg mL-1, after 48 h of treatment, whereas no cytotoxicity was observed for normal NIH 3T3 cells. This is the first report of in vitro bioactivity and the first investigation of the antitumor potential of gabiroba pectins.
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Affiliation(s)
- Sarah da Costa Amaral
- Postgraduate Program in Biochemistry Sciences, Sector of Biological Sciences, Federal University of Paraná, Curitiba, PR, 81531-990, Brazil
| | - Shayla Fernanda Barbieri
- Postgraduate Program in Biochemistry Sciences, Sector of Biological Sciences, Federal University of Paraná, Curitiba, PR, 81531-990, Brazil
| | - Andrea Caroline Ruthes
- Division of Glycoscience, Royal Institute of Technology - KTH, Sweden; Department of Entomology and Nematology, University of Florida, Gulf Coast Research and Education Center (GCREC-UF), Wimauma, USA
| | - Juliana Müller Bark
- Postgraduate Program in Biochemistry Sciences, Sector of Biological Sciences, Federal University of Paraná, Curitiba, PR, 81531-990, Brazil
| | - Sheila Maria Brochado Winnischofer
- Postgraduate Program in Biochemistry Sciences, Sector of Biological Sciences, Federal University of Paraná, Curitiba, PR, 81531-990, Brazil; Department of Biochemistry and Molecular Biology, Federal University of Paraná, CEP 81.531-980, Curitiba-PR, Brazil; Postgraduate Program in Cellular and Molecular Biology, Federal University of Paraná, CEP 81.531-980, Curitiba-PR, Brazil
| | - Joana Léa Meira Silveira
- Postgraduate Program in Biochemistry Sciences, Sector of Biological Sciences, Federal University of Paraná, Curitiba, PR, 81531-990, Brazil; Department of Biochemistry and Molecular Biology, Federal University of Paraná, CEP 81.531-980, Curitiba-PR, Brazil.
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18
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Miller MC, Zheng Y, Zhou Y, Tai G, Mayo KH. Galectin-3 binds selectively to the terminal, non-reducing end of β(1→4)-galactans, with overall affinity increasing with chain length. Glycobiology 2019; 29:74-84. [PMID: 30204870 DOI: 10.1093/glycob/cwy085] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2018] [Accepted: 09/11/2018] [Indexed: 12/15/2022] Open
Abstract
Galactans are linear polysaccharides of β(1→4)-linked galactose residues. Although they can antagonize galectin function, the nature of their binding to galectins needs to be better defined to develop them as drugs. Here, we investigated interactions between galectin-3 (Gal-3) and a series of galactans ranging in weight average molecular weight from 670 to 7550 Da. 15N-1H HSQC NMR studies with 15N-labeled Gal-3 carbohydrate recognition domain (CRD) indicate that each of these galactans interacts primarily with residues in β-strands 4, 5 and 6 on the canonical, β-galactoside sugar binding S-face. Although these galactans also bind to full length Gal-3 (CRD plus N-terminal tail) to the same extent, it appears that binding to the S-face attenuates interactions between the CRD F-face and N-terminal tail, making interpretation of site-specific binding unclear. Following assignment of galactan 13C and 1H resonances using HSQC, HMBC and TOCSY experiments, we used 13C-1H HSQC data to demonstrate that the Gal-3 CRD binds to the terminal, non-reducing end of these galactans, regardless of their size, but with binding affinity increasing as the galactan chain length increases. Overall, our findings increase understanding as to how galactans interact with Gal-3 at the non-reducing, terminal end of galactose-containing polysaccharides as found on the cell surface.
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Affiliation(s)
- Michelle C Miller
- Department of Biochemistry, Molecular Biology & Biophysics, 6-155 Jackson Hall, University of Minnesota, Minneapolis, MN, USA
| | - Yi Zheng
- School of Life Sciences, Northeast Normal University, Changchun, PR China
| | - Yifa Zhou
- School of Life Sciences, Northeast Normal University, Changchun, PR China
| | - Guihua Tai
- School of Life Sciences, Northeast Normal University, Changchun, PR China
| | - Kevin H Mayo
- Department of Biochemistry, Molecular Biology & Biophysics, 6-155 Jackson Hall, University of Minnesota, Minneapolis, MN, USA
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19
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Durazzo A, Lucarini M, Novellino E, Souto EB, Daliu P, Santini A. Abelmoschus esculentus (L.): Bioactive Components' Beneficial Properties-Focused on Antidiabetic Role-For Sustainable Health Applications. Molecules 2018; 24:molecules24010038. [PMID: 30583476 PMCID: PMC6337517 DOI: 10.3390/molecules24010038] [Citation(s) in RCA: 55] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2018] [Revised: 12/17/2018] [Accepted: 12/19/2018] [Indexed: 01/07/2023] Open
Abstract
The main features of the okra, Abelmoschus esculentus (L.), are highlighted. The evaluation of interactions between biologically active compounds and other components of the food matrix can be considered as the first action in the investigation of potential benefits of this annual herb. Moreover, updated examples of current and innovative directions in an integrated and multidisciplinary approach are discussed, with particular attention to chemometrics. Among the main effects attributed to okra, its antidiabetic property is the focus. Finally, the use of okra in different fields will be discussed.
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Affiliation(s)
- Alessandra Durazzo
- CREA-Research Centre for Food and Nutrition, Via Ardeatina 546, 00178 Rome, Italy.
| | - Massimo Lucarini
- CREA-Research Centre for Food and Nutrition, Via Ardeatina 546, 00178 Rome, Italy.
| | - Ettore Novellino
- Department of Pharmacy, University of Napoli Federico II, Via D. Montesano 49, 80131 Napoli, Italy.
| | - Eliana B Souto
- Department of Pharmaceutical Technology, Faculty of Pharmacy, University of Coimbra, Coimbra, Portugal.
- CEB-Centre of Biological Engineering, University of Minho, Campus de Gualtar, 4710-057 Braga, Portugal.
| | - Patricia Daliu
- Department of Pharmacy, University of Napoli Federico II, Via D. Montesano 49, 80131 Napoli, Italy.
| | - Antonello Santini
- Department of Pharmacy, University of Napoli Federico II, Via D. Montesano 49, 80131 Napoli, Italy.
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20
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Fang T, Liu DD, Ning HM, Dan Liu, Sun JY, Huang XJ, Dong Y, Geng MY, Yun SF, Yan J, Huang RM. Modified citrus pectin inhibited bladder tumor growth through downregulation of galectin-3. Acta Pharmacol Sin 2018; 39:1885-1893. [PMID: 29769742 PMCID: PMC6289393 DOI: 10.1038/s41401-018-0004-z] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2017] [Revised: 01/07/2018] [Accepted: 01/08/2018] [Indexed: 01/26/2023] Open
Abstract
Modified citrus pectin (MCP) is a carbohydrate enriched complex, which has been implicated in cancer treatment and prevention. However, the effects of MCP on urinary bladder cancer (UBC) are unknown. In this study, MCP was first tested in T24 and J82 human UBC cells and showed the inhibition of cell viability by the sulforhodamine B (SRB) assay. The MCP-treated UBC cells exhibited G2/M phase arrest with the decrease of Cyclin B1 and phosphorylated Cdc2. Caspase-3 was also activated, leading to the cleavage of Caspase-3 and PARP. We further explored the possible molecular mechanisms upon MCP treatment in UBC cells. Reduction of galectin-3 was observed and followed with the inactivation of Akt signaling pathway. Of note, galectin-3 knockdown by RNA interference recapitulated the MCP-mediated anti-proliferation, cell cycle arrest and apoptosis. Moreover, oral administration of MCP to the T24 xenograft-bearing nude mice inhibited the tumor growth significantly (P < 0.05). Quantification analysis of immunohistochemistry staining for Ki67 and cleaved Caspase-3 confirmed the decrease of proliferation index (P < 0.05) and the increase of apoptosis index (P < 0.01) in 700 mg/kg MCP-fed UBC xenografts. Using the information from TCGA database, we revealed that the overexpression of galectin-3 was associated with high tumor grade with lymph node metastasis, poor overall survival in UBC patients. Considering the remarkable inhibitory effects of MCP on UBC cell proliferation and survival in vitro and in vivo mainly through galectin-3, which is upregulated in UBCs, MCP may become an attractive agent, as a natural dietary fiber, for prevention and therapy of UBCs.
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Affiliation(s)
- Tian Fang
- Department of Comparative Medicine, Jinling Hospital, Clinical School of Medical College of Nanjing University, Nanjing, 210002, China
| | - Dan-Dan Liu
- Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai, 201203, China
- University of Chinese Academy of Sciences, Beijing, 100049, China
| | - He-Ming Ning
- Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai, 201203, China
- University of Chinese Academy of Sciences, Beijing, 100049, China
- Shanghai Tech University, Shanghai, 201210, China
| | - Dan Liu
- State Key Laboratory of Pharmaceutical Biotechnology and MOE Key Laboratory of Model Animals for Disease Study, Model Animal Research Center of Nanjing University, Nanjing, 210061, China
| | - Jing-Ya Sun
- Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai, 201203, China
| | - Xiao-Jing Huang
- State Key Laboratory of Pharmaceutical Biotechnology and MOE Key Laboratory of Model Animals for Disease Study, Model Animal Research Center of Nanjing University, Nanjing, 210061, China
| | - Yu Dong
- Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai, 201203, China
- Shanghai University, Shanghai, 200444, China
| | - Mei-Yu Geng
- Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai, 201203, China
- University of Chinese Academy of Sciences, Beijing, 100049, China
- Shanghai Tech University, Shanghai, 201210, China
| | - Shi-Feng Yun
- Department of Comparative Medicine, Jinling Hospital, Clinical School of Medical College of Nanjing University, Nanjing, 210002, China.
| | - Jun Yan
- State Key Laboratory of Pharmaceutical Biotechnology and MOE Key Laboratory of Model Animals for Disease Study, Model Animal Research Center of Nanjing University, Nanjing, 210061, China.
- Collaborative Innovation Center of Genetics and Development, Shanghai, 200438, China.
| | - Rui-Min Huang
- Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai, 201203, China.
- University of Chinese Academy of Sciences, Beijing, 100049, China.
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21
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Macromolecular assemblies of complex polysaccharides with galectin-3 and their synergistic effects on function. Biochem J 2017; 474:3849-3868. [PMID: 28986508 DOI: 10.1042/bcj20170143] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2017] [Revised: 09/17/2017] [Accepted: 10/03/2017] [Indexed: 12/11/2022]
Abstract
Although pectin-derived polysaccharides can antagonize galectin function in various pathological disorders, the nature of their binding interactions needs to be better defined for developing them as drugs. Moreover, given their relatively large size and complexity, pectin-derived polysaccharides are also useful as model systems to assess inter-polysaccharide and protein-polysaccharide interactions. Here, we investigated interactions between galectin-3 (Gal-3) and pectin-derived polysaccharides: a rhamnogalacturonan (RG) and two homogalacturonans (HGs). BioLayer Interferometry and fluorescence-linked immunosorbent assays indicate that these polysaccharides bind Gal-3 with macroscopic or apparent KD values of 49 nM, 46 µM, and 138 µM, respectively. 15N-1H heteronuclear single quantum coherence (HSQC) NMR studies reveal that these polysaccharides interact primarily with the F-face of the Gal-3 carbohydrate recognition domain. Even though their binding to Gal-3 does not inhibit Gal-3-mediated T-cell apoptosis and only weakly attenuates hemagglutination, their combination in specific proportions increases activity synergistically along with avidity for Gal-3. This suggests that RG and HG polysaccharides act in concert, a proposal supported by polysaccharide particle size measurements and 13C-1H HSQC data. Our model has HG interacting with RG to promote increased avidity of RG for Gal-3, likely by exposing additional lectin-binding sites on the RG. Overall, the present study contributes to our understanding of how complex HG and RG polysaccharides interact with Gal-3.
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22
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Emerging concepts in the nutraceutical and functional properties of pectin-A Review. Carbohydr Polym 2017; 168:227-239. [PMID: 28457445 DOI: 10.1016/j.carbpol.2017.03.058] [Citation(s) in RCA: 224] [Impact Index Per Article: 32.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/26/2016] [Revised: 02/21/2017] [Accepted: 03/17/2017] [Indexed: 01/30/2023]
Abstract
Pectin is a structural heteropolysaccharide found ubiquitously in terrestrial plants. It finds diverse food applications such as that of a gelling agent, stabilizer, and fat replacer. In the pharmaceutical arena, pectin exhibits a number of functions, from decreasing blood fat to combating various types of cancers. This review shows the shift of pectin from its conventional roles to its progressive applications. Insights into the advances in the production of pectin, the role it plays as a nutraceutical, possible prebiotic potential and a delivery vehicle for probiotics, and food applications are highlighted. Bioactive and functional properties of pectin are discussed and how the structural built up defines them, is emphasized. As a biopolymer, the applications of pectin in active packaging are also mentioned.
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23
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Zhang T, Zheng Y, Zhao D, Yan J, Sun C, Zhou Y, Tai G. Multiple approaches to assess pectin binding to galectin-3. Int J Biol Macromol 2016; 91:994-1001. [PMID: 27328612 DOI: 10.1016/j.ijbiomac.2016.06.058] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2016] [Revised: 06/15/2016] [Accepted: 06/18/2016] [Indexed: 11/16/2022]
Abstract
Although several approaches have been used to evaluate binding of carbohydrates to lectins, results are not always comparable, especially with larger polysaccharides. Here, we quantitatively assessed and compared binding of pectin-derived polysaccharides to galectin-3 (Gal-3) using five methods: surface plasmon resonance (SPR), bio-layer interferometry (BLI), fluorescence polarization (FP), competitive fluorescence-linked immunosorbance (cFLISA), and the well-known cell-based hemagglutination assay (G3H). Our studies revealed that whereas Gal-3-pectin binding parameters determined by SPR and BLI were comparable and correlated with inhibitory potencies from the G3H assay, results using FP and cFLISA assays were highly variable and depended greatly on the probe and mass of the polysaccharide. In the cFLISA assay, for example, pectins showed no inhibition when using the DTAF-labeled asialofetuin probe, but did when using a DTAF-labeled pectin probe. And the FP approach with the DTAF-lactose probe did not work on polysaccharides and large galactan chains, although it did work well with smaller galactans. Nevertheless, even though results derived from all of these methods are in general agreement, derived KD, IC50, and MIC values do differ. Our results reflect the variability using various techniques and therefore will be useful to investigators who are developing pectin-derived Gal-3 antagonists as anti-cancer agents.
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Affiliation(s)
- Tao Zhang
- Jilin Province Key Laboratory for Chemistry and Biology of Natural Drugs in Changbai Mountain, School of Life Sciences, Northeast Normal University, Changchun 130024, PR China
| | - Yi Zheng
- Jilin Province Key Laboratory for Chemistry and Biology of Natural Drugs in Changbai Mountain, School of Life Sciences, Northeast Normal University, Changchun 130024, PR China
| | - Dongyang Zhao
- Jilin Province Key Laboratory for Chemistry and Biology of Natural Drugs in Changbai Mountain, School of Life Sciences, Northeast Normal University, Changchun 130024, PR China
| | - Jingmin Yan
- Jilin Province Key Laboratory for Chemistry and Biology of Natural Drugs in Changbai Mountain, School of Life Sciences, Northeast Normal University, Changchun 130024, PR China
| | - Chongliang Sun
- Jilin Province Key Laboratory for Chemistry and Biology of Natural Drugs in Changbai Mountain, School of Life Sciences, Northeast Normal University, Changchun 130024, PR China
| | - Yifa Zhou
- Jilin Province Key Laboratory for Chemistry and Biology of Natural Drugs in Changbai Mountain, School of Life Sciences, Northeast Normal University, Changchun 130024, PR China.
| | - Guihua Tai
- Jilin Province Key Laboratory for Chemistry and Biology of Natural Drugs in Changbai Mountain, School of Life Sciences, Northeast Normal University, Changchun 130024, PR China.
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24
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Stegmayr J, Lepur A, Kahl-Knutson B, Aguilar-Moncayo M, Klyosov AA, Field RA, Oredsson S, Nilsson UJ, Leffler H. Low or No Inhibitory Potency of the Canonical Galectin Carbohydrate-binding Site by Pectins and Galactomannans. J Biol Chem 2016; 291:13318-34. [PMID: 27129206 PMCID: PMC4933242 DOI: 10.1074/jbc.m116.721464] [Citation(s) in RCA: 46] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2016] [Indexed: 12/17/2022] Open
Abstract
Some complex plant-derived polysaccharides, such as modified citrus pectins and galactomannans, have been shown to have promising anti-inflammatory and anti-cancer effects. Most reports propose or claim that these effects are due to interaction of the polysaccharides with galectins because the polysaccharides contain galactose-containing side chains that might bind this class of lectin. However, their direct binding to and/or inhibition of the evolutionarily conserved galactoside-binding site of galectins has not been demonstrated. Using a well established fluorescence anisotropy assay, we tested the direct interaction of several such polysaccharides with physiological concentrations of a panel of galectins. The bioactive pectic samples tested were very poor inhibitors of the canonical galactoside-binding site for the tested galectins, with IC50 values >10 mg/ml for a few or in most cases no inhibitory activity at all. The galactomannan Davanat® was more active, albeit not a strong inhibitor (IC50 values ranging from 3 to 20 mg/ml depending on the galectin). Pure synthetic oligosaccharide fragments found in the side chains and backbone of pectins and galactomannans were additionally tested. The most commonly found galactan configuration in pectins had no inhibition of the galectins tested. Galactosylated tri- and pentamannosides, representing the structure of Davanat®, had an inhibitory effect of galectins comparable with that of free galactose. Further evaluation using cell-based assays, indirectly linked to galectin-3 inhibition, showed no inhibition of galectin-3 by the polysaccharides. These data suggest that the physiological effects of these plant polysaccharides are not due to inhibition of the canonical galectin carbohydrate-binding site.
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Affiliation(s)
- John Stegmayr
- From the Section MIG (Microbiology, Immunology, Glycobiology), Department of Laboratory Medicine, Lund University, 221 00 Lund, Sweden, the Department of Biology and
| | - Adriana Lepur
- From the Section MIG (Microbiology, Immunology, Glycobiology), Department of Laboratory Medicine, Lund University, 221 00 Lund, Sweden
| | - Barbro Kahl-Knutson
- From the Section MIG (Microbiology, Immunology, Glycobiology), Department of Laboratory Medicine, Lund University, 221 00 Lund, Sweden
| | - Matilde Aguilar-Moncayo
- the Department of Biological Chemistry, John Innes Centre, Norwich Research Park, NR4 7UH Norwich, United Kingdom, and
| | | | - Robert A Field
- the Department of Biological Chemistry, John Innes Centre, Norwich Research Park, NR4 7UH Norwich, United Kingdom, and
| | | | - Ulf J Nilsson
- Centre for Analysis and Synthesis, Department of Chemistry, Lund University, Lund, Sweden
| | - Hakon Leffler
- From the Section MIG (Microbiology, Immunology, Glycobiology), Department of Laboratory Medicine, Lund University, 221 00 Lund, Sweden,
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25
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Karboune S, Khodaei N. Structures, isolation and health-promoting properties of pectic polysaccharides from cell wall-rich food by-products: a source of functional ingredients. Curr Opin Food Sci 2016. [DOI: 10.1016/j.cofs.2016.02.003] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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26
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Chen H, Jiao H, Cheng Y, Xu K, Jia X, Shi Q, Guo S, Wang M, Du L, Wang F. In VitroandIn VivoImmunomodulatory Activity of Okra (Abelmoschus esculentus L.) Polysaccharides. J Med Food 2016; 19:253-65. [DOI: 10.1089/jmf.2015.3513] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Affiliation(s)
- Huricha Chen
- College of Agriculture, Hainan University, Hainan Key Lab of Tropical Animal Reproduction & Breeding and Epidemic Disease Research, Animal Genetic Engineering Key Lab of Haikou, Haikou, People's Republic of China
| | - Hanwei Jiao
- College of Agriculture, Hainan University, Hainan Key Lab of Tropical Animal Reproduction & Breeding and Epidemic Disease Research, Animal Genetic Engineering Key Lab of Haikou, Haikou, People's Republic of China
| | - Ying Cheng
- College of Agriculture, Hainan University, Hainan Key Lab of Tropical Animal Reproduction & Breeding and Epidemic Disease Research, Animal Genetic Engineering Key Lab of Haikou, Haikou, People's Republic of China
| | - Kailian Xu
- College of Agriculture, Hainan University, Hainan Key Lab of Tropical Animal Reproduction & Breeding and Epidemic Disease Research, Animal Genetic Engineering Key Lab of Haikou, Haikou, People's Republic of China
| | - Xiaoxiao Jia
- College of Agriculture, Hainan University, Hainan Key Lab of Tropical Animal Reproduction & Breeding and Epidemic Disease Research, Animal Genetic Engineering Key Lab of Haikou, Haikou, People's Republic of China
| | - Qiaoyun Shi
- College of Agriculture, Hainan University, Hainan Key Lab of Tropical Animal Reproduction & Breeding and Epidemic Disease Research, Animal Genetic Engineering Key Lab of Haikou, Haikou, People's Republic of China
| | - Shiyu Guo
- College of Agriculture, Hainan University, Hainan Key Lab of Tropical Animal Reproduction & Breeding and Epidemic Disease Research, Animal Genetic Engineering Key Lab of Haikou, Haikou, People's Republic of China
| | - Manchuriga Wang
- College of Agriculture, Hainan University, Hainan Key Lab of Tropical Animal Reproduction & Breeding and Epidemic Disease Research, Animal Genetic Engineering Key Lab of Haikou, Haikou, People's Republic of China
| | - Li Du
- College of Agriculture, Hainan University, Hainan Key Lab of Tropical Animal Reproduction & Breeding and Epidemic Disease Research, Animal Genetic Engineering Key Lab of Haikou, Haikou, People's Republic of China
| | - Fengyang Wang
- College of Agriculture, Hainan University, Hainan Key Lab of Tropical Animal Reproduction & Breeding and Epidemic Disease Research, Animal Genetic Engineering Key Lab of Haikou, Haikou, People's Republic of China
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27
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Maxwell EG, Colquhoun IJ, Chau HK, Hotchkiss AT, Waldron KW, Morris VJ, Belshaw NJ. Modified sugar beet pectin induces apoptosis of colon cancer cells via an interaction with the neutral sugar side-chains. Carbohydr Polym 2016; 136:923-9. [DOI: 10.1016/j.carbpol.2015.09.063] [Citation(s) in RCA: 57] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2015] [Revised: 09/15/2015] [Accepted: 09/21/2015] [Indexed: 11/28/2022]
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28
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29
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Wikiera A, Mika M, Starzyńska-Janiszewska A, Stodolak B. Application of Celluclast 1.5L in apple pectin extraction. Carbohydr Polym 2015; 134:251-7. [PMID: 26428122 DOI: 10.1016/j.carbpol.2015.07.051] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2015] [Revised: 07/10/2015] [Accepted: 07/14/2015] [Indexed: 01/04/2023]
Abstract
Pectins were extracted from apple pomace with Celluclast 1.5L at a dose of 25, 50 and 75 μl per 1g of material. In obtained pectin, the galacturonic acid (GalA) content, the neutral sugars (NS) profile, the degree of methylation (DM) and acetylation (DAc), the molecular mass, protein, ash and polyphenol levels as well as antioxidant and antitumor activity were determined. The lowest dose of enzymatic preparation resulted in the yield of pectin isolation comparable with acidic treatment (15.3%). Application of higher dose caused further, almost 4% increase in polymer recovery. Enzymatically isolated pectin was characterised by larger molecular mass and contained more GalA of higher DM and DAc than polymer extracted with acid. It was also richer in protein and polyphenols, and had different NS profile, which resulted in higher antiradical activity as well as the ability to inhibit the proliferation and invasion of Caco-2 adenocarcinoma cells.
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Affiliation(s)
- Agnieszka Wikiera
- Department of Food Biotechnology, Faculty of Food Technology, Agricultural University of Cracow, 31-149 Kraków, ul. Balicka 122, Poland.
| | - Magdalena Mika
- Department of Food Biotechnology, Faculty of Food Technology, Agricultural University of Cracow, 31-149 Kraków, ul. Balicka 122, Poland
| | - Anna Starzyńska-Janiszewska
- Department of Food Biotechnology, Faculty of Food Technology, Agricultural University of Cracow, 31-149 Kraków, ul. Balicka 122, Poland
| | - Bożena Stodolak
- Department of Food Biotechnology, Faculty of Food Technology, Agricultural University of Cracow, 31-149 Kraków, ul. Balicka 122, Poland
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Zhang L, Zhang X, Liu D, Ding T, Ye X. Effect of degradation methods on the structural properties of citrus pectin. Lebensm Wiss Technol 2015. [DOI: 10.1016/j.lwt.2014.11.002] [Citation(s) in RCA: 49] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
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Leclere L, Fransolet M, Cote F, Cambier P, Arnould T, Van Cutsem P, Michiels C. Heat-modified citrus pectin induces apoptosis-like cell death and autophagy in HepG2 and A549 cancer cells. PLoS One 2015; 10:e0115831. [PMID: 25794149 PMCID: PMC4368604 DOI: 10.1371/journal.pone.0115831] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2014] [Accepted: 12/02/2014] [Indexed: 12/12/2022] Open
Abstract
Cancer is still one of the leading causes of death worldwide, and finding new treatments remains a major challenge. Previous studies showed that modified forms of pectin, a complex polysaccharide present in the primary plant cell wall, possess anticancer properties. Nevertheless, the mechanism of action of modified pectin and the pathways involved are unclear. Here, we show that citrus pectin modified by heat treatment induced cell death in HepG2 and A549 cells. The induced cell death differs from classical apoptosis because no DNA cleavage was observed. In addition, Z-VAD-fmk, a pan-caspase inhibitor, did not influence the observed cell death in HepG2 cells but appeared to be partly protective in A549 cells, indicating that heat-modified citrus pectin might induce caspase-independent cell death. An increase in the abundance of the phosphatidylethanolamine-conjugated Light Chain 3 (LC3) protein and a decrease in p62 protein abundance were observed in both cell types when incubated in the presence of heat-modified citrus pectin. These results indicate the activation of autophagy. To our knowledge, this is the first time that autophagy has been revealed in cells incubated in the presence of a modified form of pectin. This autophagy activation appears to be protective, at least for A549 cells, because its inhibition with 3-methyladenine increased the observed modified pectin-induced cytotoxicity. This study confirms the potential of modified pectin to improve chemotherapeutic cancer treatments.
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Affiliation(s)
- Lionel Leclere
- Laboratory of Biochemistry and Cellular Biology-URBC, NARILIS, University of Namur, 61 rue de Bruxelles, 5000, Namur, Belgium
| | - Maude Fransolet
- Laboratory of Biochemistry and Cellular Biology-URBC, NARILIS, University of Namur, 61 rue de Bruxelles, 5000, Namur, Belgium
| | - Francois Cote
- Laboratory of Biochemistry and Cellular Biology-URBC, NARILIS, University of Namur, 61 rue de Bruxelles, 5000, Namur, Belgium
| | - Pierre Cambier
- Laboratory of Plant Cellular Biology-URBV, University of Namur, 61 rue de Bruxelles, 5000, Namur, Belgium
| | - Thierry Arnould
- Laboratory of Biochemistry and Cellular Biology-URBC, NARILIS, University of Namur, 61 rue de Bruxelles, 5000, Namur, Belgium
| | - Pierre Van Cutsem
- Laboratory of Plant Cellular Biology-URBV, University of Namur, 61 rue de Bruxelles, 5000, Namur, Belgium
| | - Carine Michiels
- Laboratory of Biochemistry and Cellular Biology-URBC, NARILIS, University of Namur, 61 rue de Bruxelles, 5000, Namur, Belgium
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Wang W, Ma X, Xu Y, Cao Y, Jiang Z, Ding T, Ye X, Liu D. Ultrasound-assisted heating extraction of pectin from grapefruit peel: optimization and comparison with the conventional method. Food Chem 2015; 178:106-14. [PMID: 25704690 DOI: 10.1016/j.foodchem.2015.01.080] [Citation(s) in RCA: 186] [Impact Index Per Article: 20.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2014] [Revised: 01/14/2015] [Accepted: 01/17/2015] [Indexed: 12/31/2022]
Abstract
The extraction of pectin from grapefruit peel by ultrasound-assisted heating extraction (UAHE) was investigated using response surface methodology and compared with the conventional heating extraction (CHE). The optimized conditions were power intensity of 12.56 W/cm(2), extraction temperature of 66.71°C, and sonication time of 27.95 min. The experimental optimized yield was 27.34%, which was well matched with the predicted value (27.46%). Compared with CHE, UAHE provided higher yield increased by 16.34% at the temperature lowered by 13.3°C and the time shortened by 37.78%. Image studies showed that pectin extracted by UAHE showed better color and more loosen microstructure compared to that extracted by CHE, although Fourier Transform Infrared Analysis indicated insignificant difference in their chemical structures. Furthermore, UAHE pectin possessed lower viscosity, molecular weight and degree of esterification, but higher degree of branching and purity than CHE pectin, indicating that the former was preliminarily modified during the extraction process.
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Affiliation(s)
- Wenjun Wang
- College of Biosystems Engineering and Food Science, Zhejiang University, Hangzhou, Zhejiang 310058, PR China; Zhejiang Key Laboratory for Agro-Food Processing, Hangzhou, Zhejiang 310058, PR China; Zhejiang R & D Center for Food Technology and Equipment, Hangzhou, Zhejiang 310058, PR China
| | - Xiaobin Ma
- College of Biosystems Engineering and Food Science, Zhejiang University, Hangzhou, Zhejiang 310058, PR China; Zhejiang Key Laboratory for Agro-Food Processing, Hangzhou, Zhejiang 310058, PR China; Zhejiang R & D Center for Food Technology and Equipment, Hangzhou, Zhejiang 310058, PR China
| | - Yuting Xu
- College of Biosystems Engineering and Food Science, Zhejiang University, Hangzhou, Zhejiang 310058, PR China; Zhejiang Key Laboratory for Agro-Food Processing, Hangzhou, Zhejiang 310058, PR China; Zhejiang R & D Center for Food Technology and Equipment, Hangzhou, Zhejiang 310058, PR China
| | - Yongqiang Cao
- School of Life Sciences, Yantai University, Yantai, Shandong 264000, PR China
| | - Zhumao Jiang
- School of Life Sciences, Yantai University, Yantai, Shandong 264000, PR China
| | - Tian Ding
- College of Biosystems Engineering and Food Science, Zhejiang University, Hangzhou, Zhejiang 310058, PR China; Zhejiang Key Laboratory for Agro-Food Processing, Hangzhou, Zhejiang 310058, PR China; Zhejiang R & D Center for Food Technology and Equipment, Hangzhou, Zhejiang 310058, PR China
| | - Xingqian Ye
- College of Biosystems Engineering and Food Science, Zhejiang University, Hangzhou, Zhejiang 310058, PR China; Fuli Institute of Food Science, Zhejiang University, Hangzhou, Zhejiang 310058, PR China; Zhejiang Key Laboratory for Agro-Food Processing, Hangzhou, Zhejiang 310058, PR China; Zhejiang R & D Center for Food Technology and Equipment, Hangzhou, Zhejiang 310058, PR China
| | - Donghong Liu
- College of Biosystems Engineering and Food Science, Zhejiang University, Hangzhou, Zhejiang 310058, PR China; Fuli Institute of Food Science, Zhejiang University, Hangzhou, Zhejiang 310058, PR China; Zhejiang Key Laboratory for Agro-Food Processing, Hangzhou, Zhejiang 310058, PR China; Zhejiang R & D Center for Food Technology and Equipment, Hangzhou, Zhejiang 310058, PR China.
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Xin M, Dong XW, Guo XL. Role of the interaction between galectin-3 and cell adhesion molecules in cancer metastasis. Biomed Pharmacother 2014; 69:179-85. [PMID: 25661355 DOI: 10.1016/j.biopha.2014.11.024] [Citation(s) in RCA: 53] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2014] [Accepted: 11/12/2014] [Indexed: 12/15/2022] Open
Abstract
Galectin-3, a unique chimera-type member of the β-galactoside-binding soluble lectin family, is present in both normal and cancer cells and plays a crucial role in the regulation of cell adhesion. It is involved both in accelerating detachment of cells from primary tumor sites and promoting cancer cell adhesion and survival to anoikis in the blood stream. Cell adhesion molecules (CAMs) are membrane receptors that mediate cell-cell and cell-matrix interactions, and are essential for transducing intracellular signals responsible for adhesion, migration, invasion, angiogenesis, and organ-specific metastasis. This review will discuss the recent advances in our understanding the biological functions, mechanism and therapeutic implication of the interaction between galectin-3 and CAMs in cancer metastasis.
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Affiliation(s)
- Ming Xin
- Department of Pharmacology, School of Pharmaceutical Sciences, Shandong University, Jinan 250012, China
| | - Xin-Wen Dong
- Department of Pharmacology, School of Pharmaceutical Sciences, Shandong University, Jinan 250012, China
| | - Xiu-Li Guo
- Department of Pharmacology, School of Pharmaceutical Sciences, Shandong University, Jinan 250012, China.
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Leclere L, Cutsem PV, Michiels C. Anti-cancer activities of pH- or heat-modified pectin. Front Pharmacol 2013; 4:128. [PMID: 24115933 PMCID: PMC3792700 DOI: 10.3389/fphar.2013.00128] [Citation(s) in RCA: 96] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2013] [Accepted: 09/14/2013] [Indexed: 02/01/2023] Open
Abstract
Despite enormous efforts that have been made in the search for novel drugs and treatments, cancer continues to be a major public health problem. Moreover, the emergence of resistance to cancer chemotherapy often prevents complete remission. Researchers have thus turned to natural products mainly from plant origin to circumvent resistance. Pectin and pH- or heat-modified pectin have demonstrated chemopreventive and antitumoral activities against some aggressive and recurrent cancers. The focus of this review is to describe how pectin and modified pectin display these activities and what are the possible underlying mechanisms. The failure of conventional chemotherapy to reduce mortality as well as serious side effects make natural products, such as pectin-derived products, ideal candidates for exerting synergism in combination with conventional anticancer drugs.
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Affiliation(s)
- Lionel Leclere
- Unité de Recherche en Biologie Cellulaire, Namur Research Institute for Life Sciences, University of Namur Namur, Belgium
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37
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Gao X, Zhi Y, Sun L, Peng X, Zhang T, Xue H, Tai G, Zhou Y. The inhibitory effects of a rhamnogalacturonan I (RG-I) domain from ginseng pectin on galectin-3 and its structure-activity relationship. J Biol Chem 2013; 288:33953-33965. [PMID: 24100038 DOI: 10.1074/jbc.m113.482315] [Citation(s) in RCA: 100] [Impact Index Per Article: 9.1] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023] Open
Abstract
Pectin has been shown to inhibit the actions of galectin-3, a β-galactoside-binding protein associated with cancer progression. The structural features of pectin involved in this activity remain unclear. We investigated the effects of different ginseng pectins on galectin-3 action. The rhamnogalacturonan I-rich pectin fragment, RG-I-4, potently inhibited galectin-3-mediated hemagglutination, cancer cell adhesion and homotypic aggregation, and binding of galectin-3 to T-cells. RG-I-4 specifically bound to the carbohydrate recognition domain of galectin-3 with a dissociation constant of 22.2 nm, which was determined by surface plasmon resonance analysis. The structure-activity relationship of RG-I-4 was investigated by modifying the structure through various enzymatic and chemical methods followed by activity tests. The results showed that (a) galactan side chains were essential to the activity of RG-I-4, whereas arabinan side chains positively or negatively regulated the activity depending on their location within the RG-I-4 molecule. (b) The activity of galactan chain was proportional to its length up to 4 Gal residues and largely unchanged thereafter. (c) The majority of galactan side chains in RG-I-4 were short with low activities. (d) The high activity of RG-I-4 resulted from the cooperative action of these side chains. (e) The backbone of the molecule was very important to RG-I-4 activity, possibly by maintaining a structural conformation of the whole molecule. (f) The isolated backbone could bind galectin-3, which was insensitive to lactose treatment. The novel discovery that the side chains and backbone play distinct roles in regulating RG-I-4 activity is valuable for producing highly active pectin-based galectin-3 inhibitors.
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Affiliation(s)
- Xiaoge Gao
- School of Life Sciences, Northeast Normal University, Changchun 130024, China
| | - Yuan Zhi
- School of Life Sciences, Northeast Normal University, Changchun 130024, China
| | - Lin Sun
- School of Life Sciences, Northeast Normal University, Changchun 130024, China
| | - Xiaoxia Peng
- School of Life Sciences, Northeast Normal University, Changchun 130024, China
| | - Tao Zhang
- School of Life Sciences, Northeast Normal University, Changchun 130024, China
| | - Huiting Xue
- School of Life Sciences, Northeast Normal University, Changchun 130024, China
| | - Guihua Tai
- School of Life Sciences, Northeast Normal University, Changchun 130024, China.
| | - Yifa Zhou
- School of Life Sciences, Northeast Normal University, Changchun 130024, China.
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Wang H, Chen G, Ren D, Yang ST. Hypolipidemic activity of okra is mediated through inhibition of lipogenesis and upregulation of cholesterol degradation. Phytother Res 2013; 28:268-73. [PMID: 23606408 DOI: 10.1002/ptr.4998] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2012] [Revised: 02/26/2013] [Accepted: 03/21/2013] [Indexed: 11/07/2022]
Abstract
Little is known about the hypolipidemic activity of okra; therefore, we investigated the hypolipidemic activity of okra and its interaction with gene expression of several key components involved in lipid homeostasis. Male C57BL/6 mice were randomly divided into three groups and fed with hyperlipidemic diet or two hyperlipidemic diets supplemented with 1% or 2% okra powder for eight weeks. Results demonstrated that okra dose-dependently decreased serum and hepatic total cholesterol and triglyceride, and enhanced fecal excretion of bile acids. Gene expression analysis revealed that okra upregulated cholesterol 7α-hydroxylase (CYP7A1) expression, downregulated expression of sterol regulatory element-binding protein 1c (SREBP1c) and fatty acid synthase (FAS), with no effect on sterol regulatory element-binding protein 2 (SREBP2), 3-hydroxy-3-methylglutaryl-CoA reductase (HMGR), low-density lipoprotein receptor (LDLR) and carnitine palmitoyltransferase-1A (CPT1A). It was suggested that hypolipidemic activity of okra was mediated most likely by upregulation of cholesterol degradation through CYP7A1 and by inhibition of lipogenesis through SREBP1c and FAS. Okra raw and fractionated polysaccharide showed strong bile acid binding capacity in vitro, which may contribute to the hypolipidemic activity observed. In conclusion, okra has potential application in the management of hyperlipidemia and its associated metabolic disorders.
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Affiliation(s)
- Hong Wang
- College of Light Industry and Food Sciences, South China University of Technology, 381 Wushan Road, 510641, Guangzhou, China
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39
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Hao M, Yuan X, Cheng H, Xue H, Zhang T, Zhou Y, Tai G. Comparative studies on the anti-tumor activities of high temperature- and pH-modified citrus pectins. Food Funct 2013; 4:960-71. [DOI: 10.1039/c3fo30350k] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Zhang YY, Mu TH, Zhang M. Optimisation of acid extraction of pectin from sweet potato residues by response surface methodology and its antiproliferation effect on cancer cells. Int J Food Sci Technol 2012. [DOI: 10.1111/ijfs.12026] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Affiliation(s)
- Yan-Yan Zhang
- Laboratory of Food Chemistry and Nutrition; Department of fruit and vegetable processing; Institute of Agro-Food Science and Technology; Chinese Academy of Agricultural Sciences; Beijing; 100193; China
| | - Tai-Hua Mu
- Laboratory of Food Chemistry and Nutrition; Department of fruit and vegetable processing; Institute of Agro-Food Science and Technology; Chinese Academy of Agricultural Sciences; Beijing; 100193; China
| | - Miao Zhang
- Laboratory of Food Chemistry and Nutrition; Department of fruit and vegetable processing; Institute of Agro-Food Science and Technology; Chinese Academy of Agricultural Sciences; Beijing; 100193; China
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42
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Braeuer RR, Shoshan E, Kamiya T, Bar-Eli M. The sweet and bitter sides of galectins in melanoma progression. Pigment Cell Melanoma Res 2012; 25:592-601. [DOI: 10.1111/j.1755-148x.2012.01026.x] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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43
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Gao X, Zhi Y, Zhang T, Xue H, Wang X, Foday AD, Tai G, Zhou Y. Analysis of the neutral polysaccharide fraction of MCP and its inhibitory activity on galectin-3. Glycoconj J 2012; 29:159-65. [PMID: 22562786 DOI: 10.1007/s10719-012-9382-5] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2012] [Revised: 04/05/2012] [Accepted: 04/17/2012] [Indexed: 12/01/2022]
Abstract
The pH-modified citrus pectin (MCP) has been demonstrated to inhibit galectin-3 in cancer progression. The components and structures of MCP related to this inhibition remained unknown. In this paper, we fractionated MCP on DEAE-cellulose column into a homogenous neutral fraction MCP-N (about 20 kDa) and a pectin mixture fraction MCP-A (wide molecular distribution on Sepharose CL-6B chromatography). Both MCP-N and MCP-A inhibited hemagglutination mediated by galectin-3 with minimum inhibition concentration (MIC) 625 and 0.5 μg/ml, respectively. MCP-N was identified to be a type I arabinogalactan (AG-I) with a main chain of β-1→4-galactan. MCP-N was digested by α-L-arabinofuranosidase to give its main chain structure fraction (M-galactan, around 18 kDa), which was more active than the original molecule, MIC 50 μg/ml. The acidic degradation of M-galactan increased the inhibitory activity, MIC about 5 times lower than M-galactan. These results above showed that the functional motif of the β-1→4-galactan fragment might lie in the terminal residues rather than in the internal region of the chain. Therefore, MCP-N and its degraded products might be developed to new potential galectin-3 inhibitors. This is the first report concerning the fractionation of MCP and its components on galectin-3 inhibition. The information provided in this paper is valuable for screening more active galectin-3 inhibitors from natural polysaccharides.
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Affiliation(s)
- Xiaoge Gao
- School of Life Sciences, Northeast Normal University, 5268 Renmin Street, Changchun, 130024, People's Republic of China
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Maxwell EG, Belshaw NJ, Waldron KW, Morris VJ. Pectin – An emerging new bioactive food polysaccharide. Trends Food Sci Technol 2012. [DOI: 10.1016/j.tifs.2011.11.002] [Citation(s) in RCA: 172] [Impact Index Per Article: 14.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
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46
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Klyosov AA, Traber PG. Galectins in Disease and Potential Therapeutic Approaches. ACS SYMPOSIUM SERIES 2012. [DOI: 10.1021/bk-2012-1115.ch001] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/11/2023]
Affiliation(s)
- Anatole A. Klyosov
- Galectin Therapeutics, Inc., 4960 Peachtree Industrial Blvd., Suite 240, Norcross, Georgia 30071
| | - Peter G. Traber
- Galectin Therapeutics, Inc., 4960 Peachtree Industrial Blvd., Suite 240, Norcross, Georgia 30071
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Yapo BM. Rhamnogalacturonan-I: A Structurally Puzzling and Functionally Versatile Polysaccharide from Plant Cell Walls and Mucilages. POLYM REV 2011. [DOI: 10.1080/15583724.2011.615962] [Citation(s) in RCA: 67] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/16/2022]
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48
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Plewa A, Niemiec W, Filipowska J, Osyczka AM, Lach R, Szczubiałka K, Nowakowska M. Photocrosslinkable diazoresin/pectin films – Synthesis and application as cell culture supports. Eur Polym J 2011. [DOI: 10.1016/j.eurpolymj.2011.06.002] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
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Munarin F, Guerreiro SG, Grellier MA, Tanzi MC, Barbosa MA, Petrini P, Granja PL. Pectin-Based Injectable Biomaterials for Bone Tissue Engineering. Biomacromolecules 2011; 12:568-77. [DOI: 10.1021/bm101110x] [Citation(s) in RCA: 173] [Impact Index Per Article: 13.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- F. Munarin
- Biomatlab, Bioengineering Department, Politecnico di Milano, Piazza Leonardo da Vinci 32 - 20133, Milan, Italy
| | - S. G. Guerreiro
- INEB−Instituto de Engenharia Biomédica, Universidade do Porto, Rua do Campo Alegre, 823, 4150-180 Porto, Portugal
| | - M. A. Grellier
- INEB−Instituto de Engenharia Biomédica, Universidade do Porto, Rua do Campo Alegre, 823, 4150-180 Porto, Portugal
| | - M. C. Tanzi
- Biomatlab, Bioengineering Department, Politecnico di Milano, Piazza Leonardo da Vinci 32 - 20133, Milan, Italy
| | - M. A. Barbosa
- INEB−Instituto de Engenharia Biomédica, Universidade do Porto, Rua do Campo Alegre, 823, 4150-180 Porto, Portugal
| | - P. Petrini
- Biomatlab, Bioengineering Department, Politecnico di Milano, Piazza Leonardo da Vinci 32 - 20133, Milan, Italy
| | - P. L. Granja
- INEB−Instituto de Engenharia Biomédica, Universidade do Porto, Rua do Campo Alegre, 823, 4150-180 Porto, Portugal
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Maia LP, Novaes AB, Souza SLS, Grisi MFM, Taba M, Palioto DB. In vitro evaluation of acellular dermal matrix as a three-dimensional scaffold for gingival fibroblasts seeding. J Periodontol 2010; 82:293-301. [PMID: 20812778 DOI: 10.1902/jop.2010.100121] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
BACKGROUND Tissue engineering principles could improve the incorporation of acellular dermal matrix (ADM). The aim of this study is to verify if ADM is a suitable three-dimensional matrix for gingival fibroblasts and cancerous cells ingrowth, and also if cultured medium conditioned in ADM affect cellular behavior. METHODS Canine gingival fibroblasts (CGF), human gingival fibroblasts (HGF), and murine melanoma cell line (B16F10) were seeded on ADM for up to 14 days. The following parameters were assessed: morphology and distribution of CGF, HGF, and B16F10; CGF and HGF viability; and the effect of ADM conditioned medium (CM) on CGF viability. RESULTS Epifluorescence revealed that CGF were unevenly distributed on the ADM surface, showing no increase in cell number over the periods of study; HGF formed a monolayer on the ADM surface in a higher number at 14 days (P <0.05); B16F10 exhibited an increase in cell number within 7 days (P <0.05), and were mainly arranged in cell aggregates on the ADM, forming a continuous layer at 14 days. A higher percentage of cells on the ADM surface (P <0.05) compared to inside was observed for all cell types. 3-[4,5-dimethylthiazol-2-yl]-2,5-diphenyl tetrazolium bromide (MTT) values indicated higher cell viability in samples cultured with HGF compared to CGF (P = 0.024). A significantly lower cell viability for CGF grown in CM compared to cells grown in non-CM was observed at 48 and 72 hours (P <0.05). CONCLUSIONS ADM is not suitable as a three-dimensional matrix for gingival fibroblasts ingrowth. Gingival fibroblasts and highly proliferative cells as B16F10 can only be superficially located on ADM, and CGF are negatively affected by culture medium conditioned in ADM, reducing its viability.
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Affiliation(s)
- Luciana P Maia
- Department of Bucco-Maxillofacial Surgery and Traumatology and Periodontology, School of Dentistry of Ribeirão Preto, University of São Paulo, Ribeirão Preto, SP, Brazil
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