1
|
Wang Y, Song W, Bao L, Wei J, Qian Y, Bi Y. Enzyme and pH dual responsive linear-dendritic block copolymer micelles based on a phenylalanyl-lysine motif and peripherally ketal-functionalized dendron as potential drug carriers. RSC Adv 2023; 13:22079-22087. [PMID: 37483668 PMCID: PMC10360044 DOI: 10.1039/d3ra03790h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2023] [Accepted: 07/12/2023] [Indexed: 07/25/2023] Open
Abstract
Stimuli-responsive linear-dendritic block copolymers (LDBCs) have attracted significant research attention as novel drug carriers. We report here three generations of new enzyme and pH dual responsive linear-dendritic block copolymers (LDBCs) with a phenylalanyl-lysine (Phe-Lys) dipeptide linking hydrophilic linear poly(N-vinylpyrrolidone) (PNVP) and a hydrophobic peripherally ketal-functionalized dendron derived from 2,2'-bis(hydroxymethyl)propionic acid (bis-MPA). The LDBCs are synthesized via a combination of interchange of xanthates/reversible addition-fragmentation chain transfer (MADIX/RAFT) polymerization of N-vinylpyrrolidone (NVP) and "chain-first" strategy. Their structures are confirmed by 1H NMR spectra. The gel permeation chromatograph (GPC) analysis revealed that the LDBCs have a narrow molecular weight distribution (PDI ≤ 1.25). The amphiphilic LDBCs can self-assemble into spherical nanomicelles in aqueous solution. The presence of enzyme or/and the change of pH cause disassembly of micelles to release encapsulated cargos. The release rates of the guest molecules are faster in buffer solution at pH 5.0 than those upon the addition of the activating enzyme and can be fine-tuned by changing the generation of bis-MPA dendrons. The combination of enzyme and pH dual stimuli results in significantly accelerated and more complete release of the loaded hydrophobic guests. The cell viability assay confirmed the favorable biocompatibility until the LDBC micelle concentration reached 800 μg mL-1. These results indicate that the LDBCs can be considered as a good candidate for targeting drug delivery.
Collapse
Affiliation(s)
- Yujia Wang
- College of Chemistry and Chemical Engineering, Yunnan Normal University Kunming 650500 China
| | - Wenjie Song
- College of Chemistry and Chemical Engineering, Yunnan Normal University Kunming 650500 China
| | - Lijun Bao
- College of Chemistry and Chemical Engineering, Yunnan Normal University Kunming 650500 China
| | - Junwu Wei
- College of Chemistry and Chemical Engineering, Yunnan Normal University Kunming 650500 China
| | - Yangyang Qian
- College of Chemistry and Chemical Engineering, Yunnan Normal University Kunming 650500 China
| | - Yunmei Bi
- College of Chemistry and Chemical Engineering, Yunnan Normal University Kunming 650500 China
| |
Collapse
|
2
|
Zhu R, Liang Y, Luo H, Cao H, Liu Y, Huang S, Xiao Q. Investigations of interaction mechanism and conformational variation of serum albumin affected by artemisinin and dihydroartemisinin. J Mol Recognit 2023; 36:e3000. [PMID: 36315411 DOI: 10.1002/jmr.3000] [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: 09/07/2022] [Revised: 10/14/2022] [Accepted: 10/26/2022] [Indexed: 11/05/2022]
Abstract
In this work, binding interactions of artemisinin (ART) and dihydroartemisinin (DHA) with human serum albumin (HSA) and bovine serum albumin (BSA) were investigated thoroughly to illustrate the conformational variation of serum albumin. Experimental results indicated that ART and DHA bound strongly with the site I of serum albumins via hydrogen bond (H-bond) and van der Waals force and subsequently statically quenched the intrinsic fluorescence of serum albumins through concentration-dependent manner. The quenching abilities of two drugs on the intrinsic fluorescence of HSA were much higher than the quenching abilities of two drugs on the intrinsic fluorescence of BSA. Both ART and DHA, especially DHA, caused the conformational variation of serum albumins and reduced the α-helix structure content of serum albumins. DHA with hydrophilic hydroxyl group bound with HSA more strongly, suggesting the important roles of the chemical polarity and the hydrophilicity during the binding interactions of two drugs with serum albumins. These results reveal the molecular understanding of binding interactions between ART derivatives and serum albumins, providing vital information for the future application of ART derivatives in biological and clinical areas.
Collapse
Affiliation(s)
- Rukui Zhu
- Guangxi Key Laboratory of Natural Polymer Chemistry and Physics, College of Chemistry and Materials, Nanning Normal University, Nanning, People's Republic of China
| | - Yu Liang
- Guangxi Key Laboratory of Natural Polymer Chemistry and Physics, College of Chemistry and Materials, Nanning Normal University, Nanning, People's Republic of China
| | - Huajian Luo
- Guangxi Key Laboratory of Natural Polymer Chemistry and Physics, College of Chemistry and Materials, Nanning Normal University, Nanning, People's Republic of China
| | - Huishan Cao
- Guangxi Key Laboratory of Natural Polymer Chemistry and Physics, College of Chemistry and Materials, Nanning Normal University, Nanning, People's Republic of China
| | - Yi Liu
- Guangxi Key Laboratory of Natural Polymer Chemistry and Physics, College of Chemistry and Materials, Nanning Normal University, Nanning, People's Republic of China.,State Key Laboratory of Separation Membranes and Membrane Processes, School of Chemistry and Chemical Engineering, Tiangong University, Tianjin, People's Republic of China
| | - Shan Huang
- Guangxi Key Laboratory of Natural Polymer Chemistry and Physics, College of Chemistry and Materials, Nanning Normal University, Nanning, People's Republic of China
| | - Qi Xiao
- Guangxi Key Laboratory of Natural Polymer Chemistry and Physics, College of Chemistry and Materials, Nanning Normal University, Nanning, People's Republic of China
| |
Collapse
|
3
|
Aggarwal S, Ikram S. Zinc oxide nanoparticles-impregnated chitosan surfaces for covalent immobilization of trypsin: Stability & kinetic studies. Int J Biol Macromol 2022; 207:205-221. [PMID: 35259431 DOI: 10.1016/j.ijbiomac.2022.03.014] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2021] [Revised: 01/31/2022] [Accepted: 03/03/2022] [Indexed: 11/25/2022]
Abstract
Trypsin (Try, EC. 3.4.21.4) was effectively immobilized on the surface of glutaraldehyde(GA)-activated ZnO/Chitosan nanocomposite through covalent attachment via Schiff-base linkages. Size, structure, surface morphology, & percentage elemental composition of the prepared ZnO nanoparticles and chitosan-coated ZnO nanocomposite were studied by UV-Visible spectroscopy, Fourier-transform infrared spectroscopy (FTIR), X-Ray diffraction analysis (XRD), transmission electron microscopy (TEM), Scanning electron microscopy (SEM), and Energy-Dispersive X-Ray Microanalysis (EDAX) techniques. Optimal immobilization conditions (incubation time (16 h), enzyme concentration (1.8 mg/ml), and pH (7.8)) were investigated to obtain the maximum expressed activity of the immobilized trypsin. Immobilized & solubilized trypsin exhibited the optimum catalytic activity at pH 8.5, 60 °C, and pH 7.8, 45 °C respectively. Kinetic parameters (Km, Vmax) of immobilized (27.12 μM, 8.82 μM/min) & free trypsin (25.76 μM, 4.16 μM/min) were determined, indicating that efficiency of trypsin improves after immobilization. Immobilized trypsin preserved 67% of initial activity at 50 °C during 2 h of incubation & sustained nearly 50% of catalytic activity until the 9th repeated cycle of utilization. Moreover, immobilized trypsin retained 50% of enzymatic activity after 90 days of storage at 4 °C. Hence, the current findings suggest that ZnO/Chitosan-GA-Trypsin would be a promising biocatalyst for large-scale biotechnological applications.
Collapse
Affiliation(s)
- Shalu Aggarwal
- Bio/Polymers Research Laboratory, Department of Chemistry, Faculty of Natural Sciences, Jamia Millia Islamia, New Delhi 110025, India
| | - Saiqa Ikram
- Bio/Polymers Research Laboratory, Department of Chemistry, Faculty of Natural Sciences, Jamia Millia Islamia, New Delhi 110025, India.
| |
Collapse
|
4
|
Sorokina SA, Shifrina ZB. Dendrimers as Antiamyloid Agents. Pharmaceutics 2022; 14:pharmaceutics14040760. [PMID: 35456594 PMCID: PMC9031116 DOI: 10.3390/pharmaceutics14040760] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2022] [Revised: 03/25/2022] [Accepted: 03/29/2022] [Indexed: 02/07/2023] Open
Abstract
Dendrimer–protein conjugates have significant prospects for biological applications. The complexation changes the biophysical behavior of both proteins and dendrimers. The dendrimers could influence the secondary structure of proteins, zeta-potential, distribution of charged regions on the surface, the protein–protein interactions, etc. These changes offer significant possibilities for the application of these features in nanotheranostics and biomedicine. Based on the dendrimer–protein interactions, several therapeutic applications of dendrimers have emerged. Thus, the formation of stable complexes retains the disordered proteins on the aggregation, which is especially important in neurodegenerative diseases. To clarify the origin of these properties and assess the efficiency of action, the mechanism of protein–dendrimer interaction and the nature and driving force of binding are considered in this review. The review outlines the antiamyloid activity of dendrimers and discusses the effect of dendrimer structures and external factors on their antiamyloid properties.
Collapse
|
5
|
Luo H, Li B, Liu J, Liu Y, Xiao Q, Huang S. Investigation on conformational variation and fibrillation of human serum albumin affected by molybdenum disulfide quantum dots. Int J Biol Macromol 2021; 190:999-1006. [PMID: 34487782 DOI: 10.1016/j.ijbiomac.2021.08.215] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2021] [Revised: 08/27/2021] [Accepted: 08/30/2021] [Indexed: 11/25/2022]
Abstract
In this work, binding interaction between molybdenum disulfide quantum dots (MoS2 QDs) and human serum albumin (HSA) was researched deeply to dissect the conformational variation and fibrillation of HSA affected by MoS2 QDs. The results revealed that MoS2 QDs bound strongly with HSA with molar ratio of 1:1 under the joint actions of hydrogen bond and van der Waals force, leading to the static fluorescence quenching of HSA. MoS2 QDs caused the secondary structure transition of HSA from α-helix stepwise to β-turn, β-sheet, and random coil gradually. MoS2 QDs reduced both the molar enthalpy change and the melting temperature of HSA, reducing the thermal stability of HSA significantly. It is worth noting that MoS2 QDs inhibited the fibrillation process of HSA according to the reduced hydrophobic environment and the disturbance of disulfide bonds in HSA network structure. These results reveal the precise binding mechanism of MoS2 QDs with HSA at molecular level, providing indispensable information for the potential application of MoS2 QDs in biological fields.
Collapse
Affiliation(s)
- Huajian Luo
- Guangxi Key Laboratory of Natural Polymer Chemistry and Physics, College of Chemistry and Materials, Nanning Normal University, Nanning 530001, PR China
| | - Bo Li
- Guangxi Key Laboratory of Natural Polymer Chemistry and Physics, College of Chemistry and Materials, Nanning Normal University, Nanning 530001, PR China
| | - Jiajia Liu
- Guangxi Key Laboratory of Natural Polymer Chemistry and Physics, College of Chemistry and Materials, Nanning Normal University, Nanning 530001, PR China
| | - Yi Liu
- Guangxi Key Laboratory of Natural Polymer Chemistry and Physics, College of Chemistry and Materials, Nanning Normal University, Nanning 530001, PR China
| | - Qi Xiao
- Guangxi Key Laboratory of Natural Polymer Chemistry and Physics, College of Chemistry and Materials, Nanning Normal University, Nanning 530001, PR China.
| | - Shan Huang
- Guangxi Key Laboratory of Natural Polymer Chemistry and Physics, College of Chemistry and Materials, Nanning Normal University, Nanning 530001, PR China.
| |
Collapse
|
6
|
Delyanee M, Akbari S, Solouk A. Amine-terminated dendritic polymers as promising nanoplatform for diagnostic and therapeutic agents' modification: A review. Eur J Med Chem 2021; 221:113572. [PMID: 34087497 DOI: 10.1016/j.ejmech.2021.113572] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2021] [Revised: 04/24/2021] [Accepted: 05/07/2021] [Indexed: 12/22/2022]
Abstract
It is often challenging to design diagnostic and therapeutic agents that fulfill all functional requirements. So, bulk and surface modifications as a common approach for biomedical applications have been suggested. There have been considerable research interests in using nanomaterials to the prementioned methods. Among all nanomaterials, dendritic materials with three-dimensional structures, host-guest properties, and nano-polymeric dimensions have received considerable attention. Amine-terminated dendritic structures including, polyamidoamine (PAMAM), polypropyleneimine (PPI), and polyethyleneimine (PEI), have been enormously utilized in bio-modification. This review briefly described the structure of these three common dendritic polymers and their use to modify diagnostic and therapeutic agents in six major applications, including drug delivery, gene delivery, biosensor, bioimaging, tissue engineering, and antimicrobial activity. The current review covers amine-terminated dendritic polymers toxicity challenging and improvement strategies as well.
Collapse
Affiliation(s)
- Mahsa Delyanee
- Biomedical Engineering Department, Amirkabir University of Technology, Tehran, Iran
| | - Somaye Akbari
- Textile Engineering Department, Amirkabir University of Technology, Tehran, Iran.
| | - Atefeh Solouk
- Biomedical Engineering Department, Amirkabir University of Technology, Tehran, Iran
| |
Collapse
|
7
|
Tapdigov SZ. The bonding nature of the chemical interaction between trypsin and chitosan based carriers in immobilization process depend on entrapped method: A review. Int J Biol Macromol 2021; 183:1676-1696. [PMID: 34015409 DOI: 10.1016/j.ijbiomac.2021.05.059] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2020] [Revised: 04/13/2021] [Accepted: 05/09/2021] [Indexed: 12/26/2022]
Abstract
The review article is dedicated to a comprehensive study of the chemical bond formed during the immobilization of the proteolytic enzyme pancreatic trypsin in chitosan-based polymer matrixes and its derivatives. The main focus of the study is to describe the chemical bond that causes immobilization between chitosan based carriers and trypsin. Because the nature of the chemical bond between the carrier and trypsin is a key factor in determining the area of application of the conjugate. It has been found out that after the chemical nature of functional groups, their degree of ionization, the structure of the chemical cross-linking, the medium pH and ionic strength of chitosan are modified, the mechanism of trypsin immobilization is affected. As a result, the attraction enzyme to the matrix occurs due to polar covalent and hydrogen bonds, as well as electrostatic, hydrophobic, Van der Waals forces. The collected research works on the immobilization of trypsin on chitosan-based carriers have been systematized in the paper and shown schematically in subsystems according to the type of chemical interaction. It has been shown that the immobilization of trypsin on chitosan based matrixes occur more often due to the covalent and hydrogen bonds between the protein and the carrier.
Collapse
Affiliation(s)
- Shamo Zokhrab Tapdigov
- Department of Nanostructured Metal-polymer Catalysist, Institute Catalysis and Inorganic Chemistry, Azerbaijan National Academy of Sciences, H. Javid ave. 113, AZ1143, Azerbaijan; Department of Prevention of Sand and Water Appearance, Oil-gas Research and Design Institute, The State Oil Company of the Azerbaijan Republic, H. Zardabi ave. 88, AZ1012 Baku, Azerbaijan.
| |
Collapse
|
8
|
Electrostatic and Hydrogen Bond Immobilization of Trypsine onto pH-Sensitive N-Vinylpyrrolidone and 4-Vinylpyridine Radical co-Grafted Chitosan Based on Hydrogel. Macromol Res 2021. [DOI: 10.1007/s13233-021-9015-6] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
|
9
|
Matias LLR, Costa ROA, Passos TS, Queiroz JLC, Serquiz AC, Maciel BLL, Santos PPA, Camillo CS, Gonçalves C, Amado IR, Pastrana L, Morais AHA. Tamarind Trypsin Inhibitor in Chitosan-Whey Protein Nanoparticles Reduces Fasting Blood Glucose Levels without Compromising Insulinemia: A Preclinical Study. Nutrients 2019; 11:E2770. [PMID: 31739532 PMCID: PMC6893787 DOI: 10.3390/nu11112770] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2019] [Revised: 11/05/2019] [Accepted: 11/07/2019] [Indexed: 01/02/2023] Open
Abstract
In vivo studies show the benefits of the trypsin inhibitor isolated from tamarind (Tamarindusindica L.) (TTI) seeds in satiety and obesity. In the present study, TTI nanoencapsulation (ECW) was performed to potentialize the effect of TTI and allow a controlled release in the stomach. The impact on glycemia, insulin, and lipid profile was evaluated in Wistar rats overfed with a high glycemic index diet (HGLI). Characterization of the nanoparticles and in vitro stability in simulated gastrointestinal conditions, monitored by antitrypsin activity and HPLC, was performed. ECW and empty nanoparticles (CW) were administered by gavage, using 12.5 and 10.0 mg/kg, respectively. Both nanoformulations presented a spherical shape and smooth surface, with an average diameter of 117.4 nm (24.1) for ECW and 123.9 nm (11.3) for CW. ECW maintained the antitrypsin activity (95.5%) in the gastric phase, while TTI was completely hydrolyzed. In Wistar rats, the nanoformulations significantly reduced glycemia and HOMA IR, and ECW increased HDL-c compared to CW (p < 0.05).Pancreas histopathology of animals treated with ECW suggested an onset of tissue repair. Thenanoencapsulation provided TTI protection, gradual release in the desired condition, and improvement of biochemical parameters related to carbohydrate metabolism disorders,without compromising insulinemia.
Collapse
Affiliation(s)
- Lídia L. R. Matias
- Nutrition Postgraduate Program, Center for Health Sciences, Federal University of Rio Grande do Norte, Natal, RN 59078-970, Brazil (B.L.L.M.)
| | - Rafael O. A. Costa
- Biochemistry Postgraduate Program, Biosciences Center, Federal University of Rio Grande do Norte, Natal, RN 59078-970, Brazil; (R.O.A.C.)
| | - Thaís S. Passos
- Department of Nutrition, Center for Health Sciences, Federal University of Rio Grande do Norte, Natal, RN 59078-970, Brazil;
| | - Jaluza L. C. Queiroz
- Biochemistry Postgraduate Program, Biosciences Center, Federal University of Rio Grande do Norte, Natal, RN 59078-970, Brazil; (R.O.A.C.)
| | - Alexandre C. Serquiz
- Course of Nutrition, Center University of Rio Grande do Norte, Natal, RN 59014-545, Brazil;
| | - Bruna L. L. Maciel
- Nutrition Postgraduate Program, Center for Health Sciences, Federal University of Rio Grande do Norte, Natal, RN 59078-970, Brazil (B.L.L.M.)
| | - Pedro P. A. Santos
- Structural and Functional Biology Postgraduate Program, Biosciences Center, Federal University of Rio Grande do Norte, Natal, RN 59078-970, Brazil (C.S.C.)
| | - Christina S. Camillo
- Structural and Functional Biology Postgraduate Program, Biosciences Center, Federal University of Rio Grande do Norte, Natal, RN 59078-970, Brazil (C.S.C.)
| | - Catarina Gonçalves
- International Iberian Nanotechnology Laboratory, 4715-330 Braga, Portugal; (C.G.); (L.P.)
| | - Isabel R. Amado
- International Iberian Nanotechnology Laboratory, 4715-330 Braga, Portugal; (C.G.); (L.P.)
- Department of Analytical and Food Chemistry, Faculty of Science, University of Vigo, Campus As Lagoas s/n, Ourense, 32004 Galicia, Spain
| | - Lorenzo Pastrana
- International Iberian Nanotechnology Laboratory, 4715-330 Braga, Portugal; (C.G.); (L.P.)
| | - Ana H. A. Morais
- Nutrition Postgraduate Program, Center for Health Sciences, Federal University of Rio Grande do Norte, Natal, RN 59078-970, Brazil (B.L.L.M.)
- Biochemistry Postgraduate Program, Biosciences Center, Federal University of Rio Grande do Norte, Natal, RN 59078-970, Brazil; (R.O.A.C.)
- Department of Nutrition, Center for Health Sciences, Federal University of Rio Grande do Norte, Natal, RN 59078-970, Brazil;
- International Iberian Nanotechnology Laboratory, 4715-330 Braga, Portugal; (C.G.); (L.P.)
| |
Collapse
|
10
|
Interaction study of peptide-PAMAM as potential bio-nanogate for detecting anti-hepatitis B surface antigen. Colloids Surf B Biointerfaces 2019; 185:110623. [PMID: 31735420 DOI: 10.1016/j.colsurfb.2019.110623] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2019] [Revised: 10/09/2019] [Accepted: 10/30/2019] [Indexed: 12/23/2022]
Abstract
Bio-nanogate involves synthesized or natural molecules as a 'gate' towards bioreceptors and responds upon the presence of targeted analytes in nanoscale dimension. Development of bio-nanogate improves analyte selectivity and signal response across various types of biosensors. The versatility of PAMAM dendrimers to form conjugates with guest molecules, such as proteins can be utilized in forming a bio-nanogate. PAMAM interaction with peptide bioreceptor for antibody detection is of interest in this study. This study investigated the interaction of synthesized immunogenic 'a' determinant (aD) region of hepatitis B virus surface antigen (HBsAg) with PAMAM G4 and anti-HBsAg antibody, as a potential bio-nanogate for anti-HBsAg detection. The aD peptide fused with maltose binding protein (MBP), was confirmed with Western blotting. Nano-Differential Scanning Fluorimetry (nano-DSF) study revealed that the interaction of MBP-aD with anti-HBsAg indicated a higher thermal stability as compared to its interaction with PAMAM G4. Electrochemical impedance spectroscopy showed that a higher binding constant of MBP-aD interaction with anti-HBsAg (0.92 μM-1) was observed at maximum saturation, as compared with PAMAM G4 (0.07 μM-1). Thermodynamic parameters demonstrated that MBP-aD interacted with anti-HBsAg and PAMAM G4, through van der Waals and hydrogen bonding. These analyses suggest that the weak interaction of MBP-aD and PAMAM G4 may form a potential bio-nanogate. It is hypothesized that the presence of anti-HBsAg has a higher affinity towards MBP-aD which may displace PAMAM G4 in the anti-HBsAg detection system. This interaction study is crucial as an initial platform of using peptide-PAMAM as a bio-nanogate in an antibody detection system.
Collapse
|
11
|
De Queiroz JLC, De Araújo Costa RO, Rodrigues Matias LL, De Medeiros AF, Teixeira Gomes AF, Santos Pais TD, Passos TS, Maciel BLL, Dos Santos EA, De Araújo Morais AH. Chitosan-whey protein nanoparticles improve encapsulation efficiency and stability of a trypsin inhibitor isolated from Tamarindus indica L. Food Hydrocoll 2018. [DOI: 10.1016/j.foodhyd.2018.06.010] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
|
12
|
Estrada-Fernández A, Román-Guerrero A, Jiménez-Alvarado R, Lobato-Calleros C, Alvarez-Ramirez J, Vernon-Carter E. Stabilization of oil-in-water-in-oil (O1/W/O2) Pickering double emulsions by soluble and insoluble whey protein concentrate-gum Arabic complexes used as inner and outer interfaces. J FOOD ENG 2018. [DOI: 10.1016/j.jfoodeng.2017.10.006] [Citation(s) in RCA: 45] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
|
13
|
Wan Y, Xu L, Zhuo N, Lu X. A novel DNA sensor based on C 60NPs-PAMAM-PtPNPs to detect VKORC1 gene for guiding rational clinical therapy with warfarin. Anal Chim Acta 2018; 1009:39-47. [PMID: 29422130 DOI: 10.1016/j.aca.2018.01.028] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2017] [Revised: 12/24/2017] [Accepted: 01/10/2018] [Indexed: 12/31/2022]
Abstract
Reports have indicated that warfarin is the most widely prescribed anticoagulant. However, traditionally prescribed doses for each patient may be too low or too high. The therapeutic effect is often hindered by a lack of evidence-based medical information. Herein, our aim is to provide this information. To accomplish this challenge, we report the development of a novel assay based on biotinylated tetrahedral DNA as a capture probe and fullerene (C60)-based nanomaterial as a redox probe using an ultrasensitivity assay with the Vitamin K epoxide reductase complex, subunit 1 (VKORC1). Platinum porous nanoparticles (PtPNPs) were modified on amino-terminated polyamidoamine (PAMAM)-functionalized C60 nanoparticles (C60NPs). The resultant C60NPs-PAMAM-PtPNPs were used as a redox probe. In this design, C60 exhibited excellent redox activity that was triggered by tetraoctylammonium bromide (TOAB). To improve the immobilization of the tetrahedral DNA capture probe, avidin was introduced during the fabrication of the biosensor because it can provide more active sites for the immobilization capture probe. The free-standing probe on top of the tetrahedral DNA served as a receptor to hybridize with target DNA directly. Different pulse voltammetry (DPV) was applied to record the electrochemical signals, which increased linearly with the target DNA. Under optimal conditions, the prepared biosensor showed a wide linear relationship, from 1 pM to 10 nM, with detection limits of 0.33 pM. This strategy demonstrates a new avenue for the determination of tumour-related mutated nucleotides in biosamples.
Collapse
Affiliation(s)
- Yongxian Wan
- Department of Orthopedics, Affiliated Hospital of Southwest Medical University, Luzhou, China
| | - Lili Xu
- Department of Rehabilitation Medicine, Affiliated Hospital of Southwest Medical University, Luzhou, China
| | - Naiqiang Zhuo
- Department of Orthopedics, Affiliated Hospital of Southwest Medical University, Luzhou, China
| | - Xiaobo Lu
- Department of Orthopedics, Affiliated Hospital of Southwest Medical University, Luzhou, China
| |
Collapse
|
14
|
Sun J, Wang M, Liu H, Xie J, Pan Y, Xu C, Zhao Y. Acidic electrolysed water delays browning by destroying conformation of polyphenoloxidase. JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE 2018; 98:147-153. [PMID: 28547775 DOI: 10.1002/jsfa.8449] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/13/2016] [Revised: 05/15/2017] [Accepted: 05/22/2017] [Indexed: 06/07/2023]
Abstract
BACKGROUND Browning frequently occurs at fruits, vegetables and aquatic products during storage, and it drastically reduces the consumer's acceptability, with considerable financial loss. The objective of this paper was to investigate the effects of acidic electrolysed water (AEW) technology on polyphenoloxidase (PPO), which is an essential enzyme for browning. RESULTS AEW ice exhibited a good ability in delaying browning in shrimp. Kinetic study revealed that AEW exhibited the mixed type inhibition of PPO with a Ki value of 1.96 mmol L-1 . Moreover, both the circular dichroism spectrum and Fourier transform infrared spectroscopy analyses revealed that the α-helix in PPO decreased whereas random coil increased which indicates that PPO conformation was destroyed. CONCLUSION Thus, this paper may provide a deeper understanding of the application of AEW technology for preventing browning in the food industry. © 2017 Society of Chemical Industry.
Collapse
Affiliation(s)
- Jiangping Sun
- College of Food Science and Technology, Shanghai Ocean University, Shanghai, China
| | - Meng Wang
- College of Food Science and Technology, Shanghai Ocean University, Shanghai, China
| | - Haiquan Liu
- College of Food Science and Technology, Shanghai Ocean University, Shanghai, China
- Shanghai Engineering Research Center of Aquatic-Product Processing & Preservation, Shanghai, China
- Laboratory of Quality & Safety Risk Assessment for Aquatic Product on Storage and Preservation (Shanghai), Ministry of Agriculture Shanghai, China
| | - Jing Xie
- College of Food Science and Technology, Shanghai Ocean University, Shanghai, China
- Shanghai Engineering Research Center of Aquatic-Product Processing & Preservation, Shanghai, China
- Laboratory of Quality & Safety Risk Assessment for Aquatic Product on Storage and Preservation (Shanghai), Ministry of Agriculture Shanghai, China
| | - Yingjie Pan
- College of Food Science and Technology, Shanghai Ocean University, Shanghai, China
- Shanghai Engineering Research Center of Aquatic-Product Processing & Preservation, Shanghai, China
- Laboratory of Quality & Safety Risk Assessment for Aquatic Product on Storage and Preservation (Shanghai), Ministry of Agriculture Shanghai, China
| | - Changhua Xu
- College of Food Science and Technology, Shanghai Ocean University, Shanghai, China
- Shanghai Engineering Research Center of Aquatic-Product Processing & Preservation, Shanghai, China
- Laboratory of Quality & Safety Risk Assessment for Aquatic Product on Storage and Preservation (Shanghai), Ministry of Agriculture Shanghai, China
| | - Yong Zhao
- College of Food Science and Technology, Shanghai Ocean University, Shanghai, China
- Shanghai Engineering Research Center of Aquatic-Product Processing & Preservation, Shanghai, China
- Laboratory of Quality & Safety Risk Assessment for Aquatic Product on Storage and Preservation (Shanghai), Ministry of Agriculture Shanghai, China
| |
Collapse
|
15
|
Chanphai P, Tajmir-Riahi HA. Binding analysis of antioxidant polyphenols with PAMAM nanoparticles. J Biomol Struct Dyn 2017; 36:3487-3495. [PMID: 29019428 DOI: 10.1080/07391102.2017.1391124] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
Dietary polyphenols are abundant micronutrients in our diet and paly major role in prevention of degenerative diseases. The binding efficacy of antioxidant polyphenols resveratrol, genistein, and curcumin with PAMAM-G3 and PAMAM-G4 nanoparticles was investigated in aqueous solution at physiological conditions, using multiple spectroscopic methods, TEM images, and docking studies. The polyphenol bindings are via hydrophilic, hydrophobic, and H-bonding contacts with resveratrol forming more stable conjugates. As PAMAM size increased the loading efficacy and the stability of polyphenol-polymer conjugates were increased. Polyphenol binding induced major alterations of dendrimer morphology. PAMAM nanoparticles are capable of delivery of polyphenols in vitro.
Collapse
Affiliation(s)
- P Chanphai
- a Department of Chemistry-Biochemistry, Physics , University of Québec , C. P. 500, Trois-Rivières , Québec G9A 5H7 , Canada
| | - H A Tajmir-Riahi
- a Department of Chemistry-Biochemistry, Physics , University of Québec , C. P. 500, Trois-Rivières , Québec G9A 5H7 , Canada
| |
Collapse
|
16
|
Chanphai P, Kreplak L, Tajmir-Riahi HA. Aggregation of trypsin and trypsin inhibitor by Al cation. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY B-BIOLOGY 2017; 169:7-12. [PMID: 28246055 DOI: 10.1016/j.jphotobiol.2017.02.018] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/17/2016] [Revised: 02/16/2017] [Accepted: 02/21/2017] [Indexed: 11/26/2022]
Abstract
Al cation may trigger protein structural changes such as aggregation and fibrillation, causing neurodegenerative diseases. We report the effect of Al cation on the solution structures of trypsin (try) and trypsin inhibitor (tryi), using thermodynamic analysis, UV-Visible, Fourier transform infrared (FTIR) spectroscopic methods and atomic force microscopy (AFM). Thermodynamic parameters showed Al-protein bindings occur via H-bonding and van der Waals contacts for trypsin and trypsin inhibitor. AFM showed that Al cations are able to force trypsin into larger or more robust aggregates than trypsin inhibitor, with trypsin 5±1 SE (n=52) proteins per aggregate and for trypsin inhibitor 8.3±0.7 SE (n=118). Thioflavin T test showed no major protein fibrillation in the presence of Al cation. Al complexation induced more alterations of trypsin inhibitor conformation than trypsin.
Collapse
Affiliation(s)
- P Chanphai
- Department of Chemistry-Biochemistry, Physics University of Québec, Trois-Rivières, C. P. 500, TR, Quebec G9A 5H7, Canada
| | - L Kreplak
- Department of Physics and Atmospheric Science, Sir James Dunn Building Dalhousie University, Lord Dalhousie Drive, Halifax NS B3H 4R2, Canada
| | - H A Tajmir-Riahi
- Department of Chemistry-Biochemistry, Physics University of Québec, Trois-Rivières, C. P. 500, TR, Quebec G9A 5H7, Canada.
| |
Collapse
|
17
|
He G, Zhu C, Ye S, Cai W, Yin Y, Zheng H, Yi Y. Preparation and properties of novel hydrogel based on chitosan modified by poly(amidoamine) dendrimer. Int J Biol Macromol 2016; 91:828-37. [DOI: 10.1016/j.ijbiomac.2016.05.091] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2016] [Revised: 05/24/2016] [Accepted: 05/25/2016] [Indexed: 12/17/2022]
|
18
|
Chanphai P, Thomas TJ, Tajmir-Riahi HA. Conjugation of biogenic and synthetic polyamines with serum proteins: A comprehensive review. Int J Biol Macromol 2016; 92:515-522. [PMID: 27431795 DOI: 10.1016/j.ijbiomac.2016.07.049] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2016] [Revised: 07/13/2016] [Accepted: 07/14/2016] [Indexed: 10/21/2022]
Abstract
We have reviewed the conjugation of biogenic polyamines spermine (spm), spermidine (spmd) and synthetic polyamines 3,7,11,15-tetrazaheptadecane.4HCl (BE-333) and 3,7,11,15,19-pentazahenicosane.5HCl (BE-3333) with human serum albumin (HSA), bovine serum albumin (BSA) and milk beta-lactoglobulin (b-LG) in aqueous solution at physiological pH. The results of multiple spectroscopic methods and molecular modeling were analysed here and correlations between polyamine binding mode and protein structural changes were estabilished. Polyamine-protein bindings are mainly via hydrophilic and H-bonding contacts. BSA forms more stable conjugates than HSA and b-LG. Biogenic polyamines form more stable complexes than synthetic polyamines except in the case of b-LG, where the protein shows more hydrophobic character than HSA and BSA. The loading efficacies were 40-52%. Modeling showed the presence of several H-bonding systems, which stabilized polyamine-protein conjugates. Polyamine conjugation induced major alterations of serum protein conformations. The potential application of serum proteins in delivery of polyamines is evaluated here.
Collapse
Affiliation(s)
- P Chanphai
- Department of Chemistry, Biochemistry and Physics, University of Québec at Trois-Rivières, C. P. 500, Trois-Rivières, Québec G9A 5H7,Canada
| | - T J Thomas
- Department of Medicine, Rutgers Robert Wood Johnson Medical School, Rutgers Cancer Institute of New Jersey, New Brunswick, NJ 08901, USA
| | - H A Tajmir-Riahi
- Department of Chemistry, Biochemistry and Physics, University of Québec at Trois-Rivières, C. P. 500, Trois-Rivières, Québec G9A 5H7,Canada.
| |
Collapse
|
19
|
Pishkar L, Taheri S, Makarem S, Alizadeh Zeinabad H, Rahimi A, Saboury AA, Falahati M. Studies on the interaction between nanodiamond and human hemoglobin by surface tension measurement and spectroscopy methods. J Biomol Struct Dyn 2016; 35:603-615. [DOI: 10.1080/07391102.2016.1155172] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Affiliation(s)
- Leila Pishkar
- Young Researchers and Elite Club, Islamshahr Branch, Islamic Azad University, Islamshahr, Iran
| | - Saba Taheri
- Department of Biology, Islamshahr Branch, Islamic Azad University, Islamshahr, Iran
| | - Somayeh Makarem
- Young Researchers and Elite Club, Karaj Branch, Islamic Azad University, Karaj, Iran
| | - Hojjat Alizadeh Zeinabad
- Department of Nanotechnology, Faculty of Advance Science and Technology, Islamic Azad University of Pharmaceutical Sciences (IAUPS), Tehran, Iran
| | - Arash Rahimi
- Faculty of Basic Science, Department of Biophysics, Science and Research Branch, Islamic Azad University, Tehran, Iran
| | - Ali Akbar Saboury
- Institute of Biochemistry and Biophysics, University of Tehran, Tehran, Iran
| | - Mojtaba Falahati
- Department of Nanotechnology, Faculty of Advance Science and Technology, Islamic Azad University of Pharmaceutical Sciences (IAUPS), Tehran, Iran
| |
Collapse
|
20
|
Chanphai P, Tajmir-Riahi H. Chitosan nanoparticles conjugate with trypsin and trypsin inhibitor. Carbohydr Polym 2016; 144:346-52. [DOI: 10.1016/j.carbpol.2016.02.066] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2016] [Revised: 02/15/2016] [Accepted: 02/22/2016] [Indexed: 01/23/2023]
|
21
|
Li X, Geng M. Probing the binding of procyanidin B3 to trypsin and pepsin: A multi-technique approach. Int J Biol Macromol 2016; 85:168-78. [DOI: 10.1016/j.ijbiomac.2015.12.075] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2015] [Revised: 12/21/2015] [Accepted: 12/22/2015] [Indexed: 12/23/2022]
|
22
|
Chanphai P, Tajmir-Riahi H. Thermodynamic analysis of biogenic and synthetic polyamines conjugation with PAMAM-G4 nanoparticles. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY B-BIOLOGY 2016; 155:13-9. [DOI: 10.1016/j.jphotobiol.2015.12.006] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/27/2015] [Revised: 12/02/2015] [Accepted: 12/14/2015] [Indexed: 01/12/2023]
|
23
|
Chanphai P, Thomas TJ, Tajmir-Riahi HA. Conjugation of biogenic and synthetic polyamines with trypsin and trypsin inhibitor. RSC Adv 2016. [DOI: 10.1039/c6ra09492a] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
Polyamine–protein conjugates can be used as delivery tools to transport antitumor polyamine analogues.
Collapse
Affiliation(s)
- P. Chanphai
- Department of Chemistry-Biochemistry and Physics
- University of Québec at Trois-Rivières
- Trois-Rivières
- Canada
| | - T. J. Thomas
- Department of Medicine
- Rutgers Robert Wood Johnson Medical School
- Rutgers Cancer Institute of New Jersey
- New Brunswick
- USA
| | - H. A. Tajmir-Riahi
- Department of Chemistry-Biochemistry and Physics
- University of Québec at Trois-Rivières
- Trois-Rivières
- Canada
| |
Collapse
|