1
|
Ghosh K, Takahashi D, Kotake T. Plant type II arabinogalactan: Structural features and modification to increase functionality. Carbohydr Res 2023; 529:108828. [PMID: 37182471 DOI: 10.1016/j.carres.2023.108828] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2023] [Revised: 04/22/2023] [Accepted: 04/24/2023] [Indexed: 05/16/2023]
Abstract
Type II arabinogalactans (AGs) are a highly diverse class of plant polysaccharides generally encountered as the carbohydrate moieties of certain extracellular proteoglycans, the so-called arabinogalactan-proteins (AGPs), which are found on plasma membranes and in cell walls. The basic structure of type II AG is a 1,3-β-D-galactan main chain with 1,6-β-D-galactan side chains. The side chains are further decorated with other sugars such as α-l-arabinose and β-d-glucuronic acid. In addition, AGs with 1,6-β-D-galactan as the main chain, which are designated as 'type II related AG' in this review, can also be found in several plants. Due to their diverse and heterogenous features, the determination of carbohydrate structures of type II and type II related AGs is not easy. On the other hand, these complex AGs are scientifically and commercially attractive materials whose structures can be modified by chemical and biochemical approaches for specific purposes. In the current review, what is known about the chemical structures of type II and type II related AGs from different plant sources is outlined. After that, structural analysis techniques are considered and compared. Finally, structural modifications that enhance or alter functionality are highlighted.
Collapse
Affiliation(s)
- Kanika Ghosh
- Department of Chemistry, Bidhan Chandra College, Asansol, 713304, West Bengal, India.
| | - Daisuke Takahashi
- Division of Life Science, Graduate School of Science and Engineering, Saitama University, 255 Shimo-Okubo, Sakura-ku, Saitama City, Saitama, 338-8570, Japan
| | - Toshihisa Kotake
- Division of Life Science, Graduate School of Science and Engineering, Saitama University, 255 Shimo-Okubo, Sakura-ku, Saitama City, Saitama, 338-8570, Japan; Green Bioscience Research Center, Graduate School of Science and Engineering, Saitama University, 255 Shimo-Okubo, Sakura-ku, Saitama City, Saitama, 338-8570, Japan.
| |
Collapse
|
2
|
Tan T, Yang Q, Chen D, Zhao J, Xiang L, Feng J, Song X, Fu Y, Gong T. Chondroitin sulfate-mediated albumin corona nanoparticles for the treatment of breast cancer. Asian J Pharm Sci 2021; 16:508-518. [PMID: 34703499 PMCID: PMC8520051 DOI: 10.1016/j.ajps.2021.03.004] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2020] [Revised: 02/08/2021] [Accepted: 03/10/2021] [Indexed: 12/20/2022] Open
Abstract
Chondroitin sulfate-mediated albumin corona nanoparticles were readily prepared without any chemical reaction, and their active tumor targeting and therapeutic effects were examined. Negatively charged chondroitin sulfate (CS) and positively charged doxorubicin (DOX) self-assembled into nanoparticles (CS-DOX-NPs) via electrostatic interactions. Bovine serum albumin (BSA) was then adsorbed on the surface of CS-DOX-NPs to form albumin corona nanoparticles (BC-DOX-NPs) protected from endogenous proteins. Due to the dual effect of BSA and CS, BC-DOX-NPs interacted with the gp60, SPARC and CD44 receptors on tumor cells, facilitating their rapid and efficient transcytosis and improving their accumulation and uptake within tumor tissues. The simultaneous presence of BSA and CS also allowed BC-DOX-NPs to target CD44 efficiently, leading to greater cellular uptake and cytotoxicity against 4T1 cells than CS-DOX-NPs or free DOX. Intravenous injection of BC-DOX-NPs into orthotopic 4T1 tumor-bearing mice led to greater drug accumulation at the tumor site than with CS-DOX-NPs or free DOX, resulting in significant inhibition of tumor growth and lower exposure of major organs to the drug.
Collapse
Affiliation(s)
- Tiantian Tan
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry, Sichuan Engineering Laboratory for Plant-Sourced Drug and Sichuan Research Center for Drug Precision Industrial Technology,West China School of Pharmacy, Sichuan University, Chengdu, 610064, China
| | - Qin Yang
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry, Sichuan Engineering Laboratory for Plant-Sourced Drug and Sichuan Research Center for Drug Precision Industrial Technology,West China School of Pharmacy, Sichuan University, Chengdu, 610064, China.,School of Pharmacy, North Sichuan Medical College, Nanchong 637100, China
| | - Dan Chen
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry, Sichuan Engineering Laboratory for Plant-Sourced Drug and Sichuan Research Center for Drug Precision Industrial Technology,West China School of Pharmacy, Sichuan University, Chengdu, 610064, China
| | - Juan Zhao
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry, Sichuan Engineering Laboratory for Plant-Sourced Drug and Sichuan Research Center for Drug Precision Industrial Technology,West China School of Pharmacy, Sichuan University, Chengdu, 610064, China.,Departments of Pharmacy, Mianyang Hospital of Traditional Chinese Medicine, Mianyang 621000, China
| | - Ling Xiang
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry, Sichuan Engineering Laboratory for Plant-Sourced Drug and Sichuan Research Center for Drug Precision Industrial Technology,West China School of Pharmacy, Sichuan University, Chengdu, 610064, China
| | - Jiaxing Feng
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry, Sichuan Engineering Laboratory for Plant-Sourced Drug and Sichuan Research Center for Drug Precision Industrial Technology,West China School of Pharmacy, Sichuan University, Chengdu, 610064, China
| | - Xu Song
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry, Sichuan Engineering Laboratory for Plant-Sourced Drug and Sichuan Research Center for Drug Precision Industrial Technology,West China School of Pharmacy, Sichuan University, Chengdu, 610064, China
| | - Yao Fu
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry, Sichuan Engineering Laboratory for Plant-Sourced Drug and Sichuan Research Center for Drug Precision Industrial Technology,West China School of Pharmacy, Sichuan University, Chengdu, 610064, China
| | - Tao Gong
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry, Sichuan Engineering Laboratory for Plant-Sourced Drug and Sichuan Research Center for Drug Precision Industrial Technology,West China School of Pharmacy, Sichuan University, Chengdu, 610064, China
| |
Collapse
|
3
|
Ghosh D, Karmakar P. Insight into anti-oxidative carbohydrate polymers from medicinal plants: Structure-activity relationships, mechanism of actions and interactions with bovine serum albumin. Int J Biol Macromol 2020; 166:1022-1034. [PMID: 33166557 DOI: 10.1016/j.ijbiomac.2020.10.258] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2020] [Revised: 10/29/2020] [Accepted: 10/30/2020] [Indexed: 01/06/2023]
Abstract
Recently, research associated with natural anti-oxidants leads to the chemical characterization of many compounds possessing strong anti-oxidant activity. Among these anti-oxidants, naturally occurring carbohydrate polymers containing pectic arabinogalactans esterified with phenolic acids in monomeric and dimeric forms are noteworthy. The presence of highly branched arabinogalactan type II side chains and sugar linked phenolic acid residues have been resolved as important parameters. The anti-oxidant activity of these compounds depend on their ability to convert free radicals into stable by-products and themselves oxidized to more stable and less reactive resonance stabilized radicals. Moreover, these carbohydrate polymers form water soluble stable complexes with protein. Such findings support their applications in a diversity of fields including food industry and pharmacy. This review highlights experimental evidences supporting that the carbohydrate polymers containing phenolic polysaccharides may become promising drug candidate for the prevention of aging and age related diseases.
Collapse
Affiliation(s)
- Debjani Ghosh
- Bhatar Girls' High School, Bhatar, Purba Bardhaman, West Bengal, India.
| | - Parnajyoti Karmakar
- Government General Degree College at Kalna-I, Medgachi, Muragacha, Purba Bardhaman, West Bengal, India
| |
Collapse
|
4
|
Li B, Wang J, Song H, Wu H, Chen X, Ma X. Synthesis, crystal structure, and BSA interaction with a new Co(II) complex based on 5-(trifluoromethyl)pyridine-2-carboxylic acid. J COORD CHEM 2019. [DOI: 10.1080/00958972.2019.1663836] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Affiliation(s)
- Bing Li
- State Key Laboratory of High-Efficiency Utilization of Coal and Green Chemical Engineering, Ningxia University, Yinchuan, China
- Department of Chemistry and Chemical Engineering, Ningxia University, Yinchuan, China
| | - Jiakai Wang
- State Key Laboratory of High-Efficiency Utilization of Coal and Green Chemical Engineering, Ningxia University, Yinchuan, China
- Department of Chemistry and Chemical Engineering, Ningxia University, Yinchuan, China
| | - Huan Song
- State Key Laboratory of High-Efficiency Utilization of Coal and Green Chemical Engineering, Ningxia University, Yinchuan, China
- Department of Chemistry and Chemical Engineering, Ningxia University, Yinchuan, China
| | - Huanping Wu
- State Key Laboratory of High-Efficiency Utilization of Coal and Green Chemical Engineering, Ningxia University, Yinchuan, China
| | - Xiaoyan Chen
- State Key Laboratory of High-Efficiency Utilization of Coal and Green Chemical Engineering, Ningxia University, Yinchuan, China
- Department of Chemistry and Chemical Engineering, Ningxia University, Yinchuan, China
| | - Xiaoxia Ma
- State Key Laboratory of High-Efficiency Utilization of Coal and Green Chemical Engineering, Ningxia University, Yinchuan, China
- Department of Chemistry and Chemical Engineering, Ningxia University, Yinchuan, China
| |
Collapse
|
5
|
Spectral and molecular modelling studies of sulfadoxine interaction with bovine serum albumin. J Photochem Photobiol A Chem 2019. [DOI: 10.1016/j.jphotochem.2019.111871] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|
6
|
Arabinogalactan protein-rare earth element complexes activate plant endocytosis. Proc Natl Acad Sci U S A 2019; 116:14349-14357. [PMID: 31239335 DOI: 10.1073/pnas.1902532116] [Citation(s) in RCA: 41] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023] Open
Abstract
Endocytosis is essential to all eukaryotes, but how cargoes are selected for internalization remains poorly characterized. Extracellular cargoes are thought to be selected by transmembrane receptors that bind intracellular adaptors proteins to initiate endocytosis. Here, we report a mechanism for clathrin-mediated endocytosis (CME) of extracellular lanthanum [La(III)] cargoes, which requires extracellular arabinogalactan proteins (AGPs) that are anchored on the outer face of the plasma membrane. AGPs were colocalized with La(III) on the cell surface and in La(III)-induced endocytic vesicles in Arabidopsis leaf cells. Superresolution imaging showed that La(III) triggered AGP movement across the plasma membrane. AGPs were then colocalized and physically associated with the μ subunit of the intracellular adaptor protein 2 (AP2) complexes. The AGP-AP2 interaction was independent of CME, whereas AGP's internalization required CME and AP2. Moreover, we show that AGP-dependent endocytosis in the presence of La(III) also occurred in human cells. These findings indicate that extracellular AGPs act as conserved CME cargo receptors, thus challenging the current paradigm about endocytosis of extracellular cargoes.
Collapse
|
7
|
Gerber W, Steyn JD, Kotzé AF, Hamman JH. Beneficial Pharmacokinetic Drug Interactions: A Tool to Improve the Bioavailability of Poorly Permeable Drugs. Pharmaceutics 2018; 10:E106. [PMID: 30049988 PMCID: PMC6161083 DOI: 10.3390/pharmaceutics10030106] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2018] [Revised: 07/16/2018] [Accepted: 07/21/2018] [Indexed: 11/28/2022] Open
Abstract
Simultaneous oral intake of herbs, supplements, foods and drugs with other drug(s) may result in pharmacokinetic or pharmacodynamic interactions with the latter. Although these interactions are often associated with unwanted effects such as adverse events or inefficacy, they can also produce effects that are potentially beneficial to the patient. Beneficial pharmacokinetic interactions include the improvement of the bioavailability of a drug (i.e., by enhancing absorption and/or inhibiting metabolism) or prolongation of a drug's plasma level within its therapeutic window (i.e., by decreasing excretion), whereas beneficial pharmacodynamic interactions include additive or synergistic effects. Mechanisms by which pharmacokinetic interactions can cause beneficial effects include enhancement of membrane permeation (e.g., structural changes in the epithelial cell membranes or opening of tight junctions), modulation of carrier proteins (e.g., inhibition of efflux transporters and stimulation of uptake transporters) and inhibition of metabolic enzymes. In the current review, selected pharmacokinetic interactions between drugs and various compounds from different sources including food, herb, dietary supplements and selected drugs are discussed. These interactions may be exploited in the future to the benefit of the patient, for example, by delivering drugs that are poorly bioavailable in therapeutic levels via alternative routes of administration than parenteral injection.
Collapse
Affiliation(s)
- Werner Gerber
- Centre of Excellence for Pharmaceutical Sciences, North-West University, 2520 Potchefstroom, South Africa.
| | - Johan D Steyn
- Centre of Excellence for Pharmaceutical Sciences, North-West University, 2520 Potchefstroom, South Africa.
| | - Awie F Kotzé
- Centre of Excellence for Pharmaceutical Sciences, North-West University, 2520 Potchefstroom, South Africa.
| | - Josias H Hamman
- Centre of Excellence for Pharmaceutical Sciences, North-West University, 2520 Potchefstroom, South Africa.
| |
Collapse
|
8
|
Behavior of bovine serum albumin in the presence of locust bean gum. Int J Biol Macromol 2018; 111:1-10. [DOI: 10.1016/j.ijbiomac.2017.12.139] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2017] [Revised: 12/23/2017] [Accepted: 12/25/2017] [Indexed: 12/16/2022]
|
9
|
Zheng C, Huang DY, Li HY, Huang FP, Bian HD. In situ synthesis, characterization, bovine serum albumin (BSA) binding studies of Fe II/Co II/Ni II complexes derived from a new double bis-triazole macrocyclic ligand. J COORD CHEM 2017. [DOI: 10.1080/00958972.2017.1346247] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Affiliation(s)
- Chu Zheng
- State Key Laboratory for the Chemistry and Molecular Engineering of Medicinal Resources, School of Chemistry and Pharmacy, Guangxi Normal University, Guilin, P. R. China
| | - De-Yin Huang
- State Key Laboratory for the Chemistry and Molecular Engineering of Medicinal Resources, School of Chemistry and Pharmacy, Guangxi Normal University, Guilin, P. R. China
| | - Hai-Ye Li
- State Key Laboratory for the Chemistry and Molecular Engineering of Medicinal Resources, School of Chemistry and Pharmacy, Guangxi Normal University, Guilin, P. R. China
| | - Fu-Ping Huang
- State Key Laboratory for the Chemistry and Molecular Engineering of Medicinal Resources, School of Chemistry and Pharmacy, Guangxi Normal University, Guilin, P. R. China
| | - He-Dong Bian
- Key Laboratory of Chemistry and Engineering of Forest Products, School of Chemistry and Chemical Engineering, Guangxi University for Nationalities, Nanning, P. R. China
| |
Collapse
|
10
|
Structural, physicochemical, antioxidant and antitumor property of an acidic polysaccharide from Polygonum multiflorum. Int J Biol Macromol 2016; 96:494-500. [PMID: 28034823 DOI: 10.1016/j.ijbiomac.2016.12.064] [Citation(s) in RCA: 47] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2016] [Revised: 12/12/2016] [Accepted: 12/18/2016] [Indexed: 01/17/2023]
Abstract
In this study, the structural characterization, physicochemical property, antioxidant and antitumor activity of an acidic polysaccharide (APS) from Polygonum multiflorum were investigated. Monosaccharide composition analysis showed APS was composed of arabinose, rhamnose, galactose and galacturonic acid in the molar ratio of 1.23:1.32:1.48:1.00. The presence of uronic acid was also confirmed by the bands at 1740, 1645 and 1425cm-1 on Fourier transform-infrared spectroscopy. Methylation and nuclear magnetic resonance analyses showed APS was mainly composed by the residues of →5)-α-l-Araf-(1→, →3)-β-d-Galp-(1→, →3,6)-β-d-Galp-(1→, →4)-α-d-GalAp-(1→ and →2)-α-l-Rhap-(1→ in the backbone. The non-reducing terminal α-l-Araf-(1→ was probably attached to the O-6 position of →3,6)-β-d-Galp-(1→ residues. Besides, APS exhibited rod-like and flaky shapes with rough surface. The initial decomposition of APS occurred at 172°C, and the rapidest weight loss rate of APS appeared at 320°C. Antioxidant activity assay showed the DPPH radical scavenging activity of APS was 67.5% at 1mg/mL. At the concentration of 400μg/mL, the antiproliferation activities of APS against HepG-2 and BGC-823 cells were 65.28% and 51.57%, respectively. Our results suggested APS could be a potential antioxidant and antitumor agent.
Collapse
|
11
|
Ghosh T, Basu A, Adhikari D, Roy D, Pal AK. Antioxidant activity and structural features of Cinnamomum zeylanicum. 3 Biotech 2015; 5:939-947. [PMID: 28324396 PMCID: PMC4624148 DOI: 10.1007/s13205-015-0296-3] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2014] [Accepted: 03/06/2015] [Indexed: 12/16/2022] Open
Abstract
The antioxidants in food materials have recently attracted researchers' attention because many reports have shown that the oxidative stress is closely related to the aging process of the cells and acts as a trigger to various diseases including cancer. Since reactive oxygen species (ROS) is involved in initiating and promoting several diseases such as cancer and cardiovascular events, this study was designed to evaluate the antioxidant capacity of pectic polysaccharides extracted from the bark of Cinnamomum zeylanicum, locally known as Daruchini. An arabinogalactan (A), one partly methyl esterified galacturonic acid (B) and a neutral glucan (C) were isolated. The glucan is made up of β-(1 → 3)-linked glucopyranosyl residues and has a molecular mass of 7 kDa. The arabinogalactan is highly branched and has an average molecular mass of 40 kDa. The in vitro antioxidant capacity of the fractions was studied by ferric reducing antioxidant power (FRAP) and 1,1-diphenyl-2-picrylhydrazyl (DPPH) assays. The arabinogalactan (A) showed the highest potential followed by the uronic acid (B) and glucan (C). Taken together, these findings demonstrate that these polysaccharides could be used as natural antioxidants by the food industry.
Collapse
Affiliation(s)
- Tuhin Ghosh
- Department of Chemistry, Durgapur Government College, Durgapur, 713 214, West Bengal, India.
| | - Ankita Basu
- Department of Chemistry, The University of Burdwan, Burdwan, 713 101, West Bengal, India
| | - Dipan Adhikari
- Department of Botany, Hooghly Mohsin College, Hooghly, Chinsurah, 712 101, West Bengal, India
| | - Debnarayan Roy
- Department of Zoology, Acharya Brojendra Nath Seal College, Cooch, Behar, 736 101, West Bengal, India
| | - Achintya Kumar Pal
- Department of Zoology, Durgapur Government College, Durgapur, 713 214, West Bengal, India
| |
Collapse
|
12
|
Majee SK, Ray S, Ghosh K, Micard V, Ray B. Isolation and structural features of an antiradical polysaccharide of Capsicum annuum that interacts with BSA. Int J Biol Macromol 2015; 75:144-51. [DOI: 10.1016/j.ijbiomac.2015.01.024] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2014] [Revised: 12/18/2014] [Accepted: 01/12/2015] [Indexed: 11/28/2022]
|
13
|
Liu J, Wen XY, Kan J, Jin CH. Structural characterization of two water-soluble polysaccharides from black soybean (Glycine max (L.) Merr.). JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2015; 63:225-34. [PMID: 25494923 DOI: 10.1021/jf505172m] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Black soybeans (Glycine max (L.) Merr.) have been widely used as a health food and medicinal herb in oriental medicine. In the present study, the chemical structures of two water-soluble polysaccharides (black soybean polysaccharide 1 (BSPS-1) and black soybean polysaccharide 3 (BSPS-3)) isolated from black soybeans were characterized by high performance size-exclusion chromatography (HPSEC), methylation analysis, and 1D (1H, 13C) and 2D (COSY, TOCSY, HSQC, NOESY, and HMBC) NMR spectra. The molecular weights of BSPS-1 and BSPS-3 were 1.95 × 105 and 1.88 × 105 Da, respectively. Methylation analysis and NMR spectra indicate that BSPS-1 is composed of 1,6-α-d-glucopyranosyl residues. By contrast, BSPS-3 is mainly composed of a 1,3-β-d-galactopyranosyl residue backbone with side chains substituted at the O-6 position consisting of large content of T-α-l-Araf-(1→ residues, and small contents of →5)-α-l-Araf-(1→, →2)-α-l-Rhap-(1→, and 4-O-Me-β-d-GlcAp-(1→ residues. Our results suggest that BSPS-1 is a linear (1→6)-α-d-glucan, whereas BSPS-3 is a type II arabinogalactan. The unique structures of BSPS-1 and BSPS-3 indicate that they might have wide applications in food and pharmaceutical industries.
Collapse
|
14
|
Bian HD, Peng XL, Huang FP, Yao D, Yu Q, Liang H. The Spectroscopy Study of the Binding of an Active Ingredient of Dioscorea Species with Bovine Serum Albumin with or without Co(2+) or Zn(2+). EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE : ECAM 2014; 2014:247595. [PMID: 24991225 PMCID: PMC4065670 DOI: 10.1155/2014/247595] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/30/2014] [Revised: 05/06/2014] [Accepted: 05/15/2014] [Indexed: 11/17/2022]
Abstract
Diosgenin (DIO) is the active ingredient of Dioscorea species. The interaction of DIO with bovine serum albumin (BSA) was investigated through spectroscopic methods under simulated physiological conditions. The fluorescence quenching data revealed that the binding of DIO to BSA without or with Co(2+) or Zn(2+) was a static quenching process. The presence of Co(2+) or Zn(2+) both increased the static quenching constants K SV and the binding affinity for the BSA-DIO system. In the sight of the competitive experiment and the negative values of ΔH (0) and ΔS (0), DIO bound to site I of BSA mainly through the hydrogen bond and Van der Waals' force. In addition, the conformational changes of BSA were studied by Raman spectra, which revealed that the secondary structure of BSA and microenvironment of the aromatic residues were changed by DIO. The Raman spectra analysis indicated that the changes of conformations, disulfide bridges, and the microenvironment of Tyr, Trp residues of BSA induced by DIO with Co(2+) or Zn(2+) were different from that without Co(2+) or Zn(2+).
Collapse
Affiliation(s)
- He-Dong Bian
- Key Laboratory of Development and Application of Forest Chemicals of Guangxi, Guangxi University of Nationalities, Nanning 530006, China
- Key Laboratory for the Chemistry and Molecular Engineering of Medicinal Resources (Ministry of Education of China), School of Chemistry and Pharmaceutical Sciences of Guangxi Normal University, Guilin 541004, China
| | - Xia-Lian Peng
- Key Laboratory for the Chemistry and Molecular Engineering of Medicinal Resources (Ministry of Education of China), School of Chemistry and Pharmaceutical Sciences of Guangxi Normal University, Guilin 541004, China
| | - Fu-Ping Huang
- Key Laboratory for the Chemistry and Molecular Engineering of Medicinal Resources (Ministry of Education of China), School of Chemistry and Pharmaceutical Sciences of Guangxi Normal University, Guilin 541004, China
| | - Di Yao
- Key Laboratory for the Chemistry and Molecular Engineering of Medicinal Resources (Ministry of Education of China), School of Chemistry and Pharmaceutical Sciences of Guangxi Normal University, Guilin 541004, China
| | - Qing Yu
- Key Laboratory for the Chemistry and Molecular Engineering of Medicinal Resources (Ministry of Education of China), School of Chemistry and Pharmaceutical Sciences of Guangxi Normal University, Guilin 541004, China
| | - Hong Liang
- Key Laboratory for the Chemistry and Molecular Engineering of Medicinal Resources (Ministry of Education of China), School of Chemistry and Pharmaceutical Sciences of Guangxi Normal University, Guilin 541004, China
| |
Collapse
|