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Xie J, Chen X, Tan Y, Li W, Yin C, Zhong T, Su D, Sun J, Tian H, Huang W. Anti-Hyperlipidemic Components of the Leaves of Synsepalum dulcificum (Miracle Fruit). PLANT FOODS FOR HUMAN NUTRITION (DORDRECHT, NETHERLANDS) 2024; 79:451-459. [PMID: 38446284 DOI: 10.1007/s11130-024-01152-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Accepted: 01/29/2024] [Indexed: 03/07/2024]
Abstract
Synsepalum dulcificum (Miracle fruit) is a tropical plant in West and Central Africa, which has been historically used for treating diarrhea in humans and animals. Pharmacological research has shown that the leaves of the plant possess anti-hyperlipidemia activity. However, its anti-hyperlipidemic components have not been reported. In this study, the leaves of S. dulcificum were extracted using 95% ethanol and the extract was fractionated using different polar solvents. The anti-hyperlipidemia activity of the extract and fractions were evaluated using the zebrafish model. The results showed that the ethyl acetate (EA) fraction displayed the best anti-hyperlipidemic effect. A comparison of the high-performance liquid chromatography equipped with diode array detector (HPLC-DAD) profiles of the ethanol extract and different fractions at 350 nm indicated that a peak at 37.4 min has the highest intensity in the EA part, relatively. Then the chemical constituents of the extract and the active fraction were extensively identified using UPLC-Q-Exactive-Orbitrap-MS/MS, showing the main peak was quercitrin and other components in the EA part mainly included quercitrin analogs. Furthermore, the quercitrin was isolated from the plant and its contents in the extract and fractions were determined using high-performance liquid chromatography with ultraviolet detector (HPLC-UV) method. The quantitative results showed that the content of quercitrin in the EA fraction was 10.04% (w/w). Further pharmacological study indicated that quercitrin also possessed potent anti-hyperlipidemia activity (improvement rates of liver fat and total cholesterol were 75.6% and 92.5% at 40 μg/mL, respectively). Besides, quercitrin showed little toxicity to zebrafish embryos.
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Affiliation(s)
- Jiaming Xie
- Institute of Traditional Chinese Medicine and Natural Products, International Cooperative Laboratory of Traditional Chinese Medicine Modernization and Innovative Drug Development of Ministry of Education (MOE) of China, College of Pharmacy, Jinan University, Guangzhou, 510632, People's Republic of China
- Key Laboratory of Regenerative Medicine, Ministry of Education, Jinan University, Guangzhou, 510632, People's Republic of China
| | - Xueyi Chen
- Institute of Traditional Chinese Medicine and Natural Products, International Cooperative Laboratory of Traditional Chinese Medicine Modernization and Innovative Drug Development of Ministry of Education (MOE) of China, College of Pharmacy, Jinan University, Guangzhou, 510632, People's Republic of China
| | - Ying Tan
- Institute of Traditional Chinese Medicine and Natural Products, International Cooperative Laboratory of Traditional Chinese Medicine Modernization and Innovative Drug Development of Ministry of Education (MOE) of China, College of Pharmacy, Jinan University, Guangzhou, 510632, People's Republic of China
| | - Wei Li
- Institute of Traditional Chinese Medicine and Natural Products, International Cooperative Laboratory of Traditional Chinese Medicine Modernization and Innovative Drug Development of Ministry of Education (MOE) of China, College of Pharmacy, Jinan University, Guangzhou, 510632, People's Republic of China
| | - Cong Yin
- Institute of Traditional Chinese Medicine and Natural Products, International Cooperative Laboratory of Traditional Chinese Medicine Modernization and Innovative Drug Development of Ministry of Education (MOE) of China, College of Pharmacy, Jinan University, Guangzhou, 510632, People's Republic of China
| | - Tian Zhong
- Faculty of Medicine, Macau University of Science and Technology, Taipa, Macao, 999078, China
| | - Dun Su
- Research and Development Center, Perfect (Guangdong) Co., Ltd, Zhongshan, 528451, China
| | - Juanjuan Sun
- Institute of Traditional Chinese Medicine and Natural Products, International Cooperative Laboratory of Traditional Chinese Medicine Modernization and Innovative Drug Development of Ministry of Education (MOE) of China, College of Pharmacy, Jinan University, Guangzhou, 510632, People's Republic of China.
| | - Haiyan Tian
- Institute of Traditional Chinese Medicine and Natural Products, International Cooperative Laboratory of Traditional Chinese Medicine Modernization and Innovative Drug Development of Ministry of Education (MOE) of China, College of Pharmacy, Jinan University, Guangzhou, 510632, People's Republic of China.
| | - Weihuan Huang
- Key Laboratory of Regenerative Medicine, Ministry of Education, Jinan University, Guangzhou, 510632, People's Republic of China.
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Metal-Chelating Peptides Separation Using Immobilized Metal Ion Affinity Chromatography: Experimental Methodology and Simulation. SEPARATIONS 2022. [DOI: 10.3390/separations9110370] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Metal-Chelating Peptides (MCPs), obtained from protein hydrolysates, present various applications in the field of nutrition, pharmacy, cosmetic etc. The separation of MCPs from hydrolysates mixture is challenging, yet, techniques based on peptide-metal ion interactions such as Immobilized Metal Ion Affinity Chromatography (IMAC) seem to be efficient. However, separation processes are time consuming and expensive, therefore separation prediction using chromatography modelling and simulation should be necessary. Meanwhile, the obtention of sorption isotherm for chromatography modelling is a crucial step. Thus, Surface Plasmon Resonance (SPR), a biosensor method efficient to screen MCPs in hydrolysates and with similarities to IMAC might be a good option to acquire sorption isotherm. This review highlights IMAC experimental methodology to separate MCPs and how, IMAC chromatography can be modelled using transport dispersive model and input data obtained from SPR for peptides separation simulation.
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Soltaninasab S, Ahmadzadeh M, Shahhosseini S, Mohit E. Evaluating the efficacy of immobilized metal affinity chromatography (IMAC) for host cell protein (HCP) removal from anti-HER2 scFv expressed in Escherichia coli. Protein Expr Purif 2021; 190:106004. [PMID: 34688918 DOI: 10.1016/j.pep.2021.106004] [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: 09/14/2021] [Revised: 10/17/2021] [Accepted: 10/19/2021] [Indexed: 12/24/2022]
Abstract
Host cell proteins (HCPs) are process-related impurities that have influence on product safety and efficacy. HCPs should effectively be removed by chromatographic steps in downstream purification process. In this study, we aimed to evaluate the efficacy of immobilized-metal affinity chromatography (IMAC) for separation of HCPs from anti-HER2 single chain fragment variable (scFv) expressed in E. coli. This study explored how different purification conditions including native, denaturing and hybrid affect HCP level in purified anti-HER2 scFv. Furthermore, the effects of NaCl concentration in wash buffer as well as imidazole concentration in wash and elution buffer on purification yield and HCP level in purified anti-HER2 scFv were evaluated. It was found that increasing imidazole concentration in wash and elution buffers in native conditions reduced the yield of anti-HER2 scFv purification. However, enhancing NaCl concentration in wash buffer in purification under native conditions led to significant increase in the amount of anti-HER2 scFv without any change in protein purity. Herein, none of the IMAC purification methods conducted on soluble cytoplasmic proteins under native conditions could reduce the amount of HCP to acceptable level. HCP content was only lowered to ˂ 10 ppm when inclusion bodies were purified under hybrid conditions. Furthermore, increasing imidazole concentration in wash buffer in purification under hybrid conditions led to significant increase in eluted anti-HER2 scFv concentration, while HCP content was also increased in this condition. Overall, purification under hybrid conditions using wash buffer containing 40 mM imidazole resulted in the highest yield and acceptable level of HCP.
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Affiliation(s)
- Saba Soltaninasab
- Department of Pharmaceutical Biotechnology, School of Pharmacy, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Maryam Ahmadzadeh
- Department of Pharmaceutical Biotechnology, School of Pharmacy, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Soraya Shahhosseini
- School of Pharmacy, Pharmaceutical Chemistry and Radiopharmacy Department and Protein Technology Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Elham Mohit
- Department of Pharmaceutical Biotechnology, School of Pharmacy, Shahid Beheshti University of Medical Sciences, Tehran, Iran.
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Akinmoladun AC, Adetuyi AR, Komolafe K, Oguntibeju OO. Nutritional benefits, phytochemical constituents, ethnomedicinal uses and biological properties of Miracle fruit plant ( Synsepalum dulcificum Shumach. & Thonn. Daniell). Heliyon 2020; 6:e05837. [PMID: 33426338 PMCID: PMC7785844 DOI: 10.1016/j.heliyon.2020.e05837] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2020] [Revised: 09/26/2020] [Accepted: 12/21/2020] [Indexed: 10/31/2022] Open
Abstract
Miracle fruit plant or Miracle berry plant (Synsepalum dulcificum) is a peculiar medicinal plant because of the unique taste-modifying property of its fruit which is due to the presence of the glycoprotein, miraculin. This property has been known for centuries to the people of tropical Western and Central Africa who also employ different parts of the plant in the management of various ailments. Scientific investigations have unravelled several pharmacological properties of the plant which include antidiabetic, blood cholesterol-lowering, anti-hyperuricaemia, antioxidant, anticonvulsant and anticancer properties. Also, subacute administration of the plant extract up to 200 mg/kg was not found to be toxic in rats. Apart from miraculin, other pharmacologically active compounds have been identified in the plant including alkaloids (dihydro-feruloyl-5-methoxytyramine, N-cis-caffeoyltyramine, N-cis-feruloyl-tyramine), lignins (+-syringaresinol, +-epi-syringaresinol), phytosterols, triterpenoids, phenolic acids, flavonoids, and amino acids. The plant has also been credited with notable nutritional benefits. Proper documentation of available information on folkloric use, biological activity, constituent phytocompounds, and nutritional benefits of ethnobotanicals will go a long way in affording optimal benefits from their therapeutic potentials. This can also aid in the conservation of species at risk of extinction. This work presents an up-to-date review of the ethnobotany, phytochemistry, biological and nutritional properties of Synsepalum dulcificum.
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Affiliation(s)
- Afolabi Clement Akinmoladun
- Department of Biochemistry, School of Sciences, The Federal University of Technology, Akure, Ondo State, Nigeria
| | - Aanuoluwapo Ruth Adetuyi
- Department of Biochemistry, School of Sciences, The Federal University of Technology, Akure, Ondo State, Nigeria
| | - Kayode Komolafe
- Department of Biochemistry, Faculty of Science, Federal University Oye Ekiti, Ekiti State, Nigeria
| | - Oluwafemi Omoniyi Oguntibeju
- Department of Biomedical Sciences, Faculty of Health & Wellness Sciences, Cape Peninsula University of Technology, P.O. Box 1906, Bellville Campus, Bellville 7535, South Africa
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