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Shishir MRI, Suo H, Taip FS, Cheng KW. Lactoferrin-chia seed mucilage complex coacervates for intestinal delivery of quercetin and fortification of set yogurt. Food Chem 2024; 456:139818. [PMID: 38878531 DOI: 10.1016/j.foodchem.2024.139818] [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: 10/26/2023] [Revised: 03/30/2024] [Accepted: 05/22/2024] [Indexed: 07/24/2024]
Abstract
This study aimed to develop complex coacervates utilizing lactoferrin (LF) and chia seed mucilage (CSM) for promoting intestinal delivery of quercetin (Q) and fortification of set yogurt. Three cross-linkers, including calcium chloride (CC), transglutaminase (TG), and polyphenolic complex (HP), were used to further reinforce the coacervate network. Cross-linked coacervates had higher values of coacervate yield, encapsulation efficiency, and loading capacity. They efficiently preserved Q under gastric condition (⁓87%-99%), with CSM-TG-Q-LF being most effective for intestinal delivery of Q. Moreover, digested pellets of the cross-linked coacervates displayed better antioxidant activity than the uncross-linked coacervates with CSM-TG-Q-LF pellets showing maximum bioactivity. The Q-loaded coacervates demonstrated superior assembly in the yogurt matrix compared to the unencapsulated Q. Moreover, the coacervate systems, especially CSM-TG-Q-LF significantly improved the textural properties of yogurt and the stability of Q in it. Therefore, CSM-TG-LF is a promising carrier to promote intestinal delivery and food application of hydrophobic molecules.
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Affiliation(s)
- Mohammad Rezaul Islam Shishir
- Department of Food Science and Engineering, College of Chemistry and Environmental Engineering, Shenzhen University, Shenzhen 518060, China; School of Food and Biological Engineering, Jiangsu University, 301 Xuefu Rd., 212013 Zhenjiang, Jiangsu, China
| | - Hao Suo
- Department of Food Science and Engineering, College of Chemistry and Environmental Engineering, Shenzhen University, Shenzhen 518060, China; School of Life and Health Technology, Dongguan University of Technology, Dongguan 523808, China
| | - Farah Saleena Taip
- Department of Process and Food Engineering, Universiti Putra Malaysia, 43400 Serdang, Selangor, Malaysia
| | - Ka-Wing Cheng
- Department of Food Science and Engineering, College of Chemistry and Environmental Engineering, Shenzhen University, Shenzhen 518060, China; Institute for Innovative Development of Food Industry, Shenzhen University, Shenzhen 518060, China.
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Vahedi SZ, Farhadian S, Shareghi B, Asgharzadeh S. Thermodynamic and functional changes of alpha-chymotrypsin after interaction with gallic acid. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2024; 313:124109. [PMID: 38447443 DOI: 10.1016/j.saa.2024.124109] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/31/2023] [Revised: 02/24/2024] [Accepted: 03/02/2024] [Indexed: 03/08/2024]
Abstract
In the present study, the interaction mechanism between gallic acid (GA) and α-Chymotrypsin (α-CT) was investigated by employing a series ofspectroscopic methods, computational docking and molecular dynamic (MD) simulation. Fluorescence spectra analysis indicated the formation of a stable complex between GA and α-CT, where the quenching of the fluorescence emission was predominantly characterized by a static mechanism. TheCA obtained binding constants for the α-CT-GA complex were in the order of 103 M-1, indicating the moderate binding affinity of GA for α-CT. The corresponding CD findings showed that the interaction between GA and α-CT resulted in an alteration of the protein's secondary structure. The findings of the enzyme activity investigation clearly showed that the presence of GA led to a notable decline in the enzymatic activity of α-CT, highlighting GA's function as an effective inhibitor for α-CT. The molecular docking simulations revealed the optimal binding site for the GA molecule within the α-CT structure and MD simulations confirmed the stability of the α-CT-GA complex. This research expands our comprehension regarding the behavior of enzymes in the presence of small-molecule ligands and opens avenues for food safety.
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Affiliation(s)
- Seyedeh Zohreh Vahedi
- Department of Biology, Faculty of Science, Shahrekord University, Shahrekord, P. O. Box.115, Iran; Central Laboratory, Shahrekord University, Shahrekord, Iran
| | - Sadegh Farhadian
- Department of Biology, Faculty of Science, Shahrekord University, Shahrekord, P. O. Box.115, Iran; Central Laboratory, Shahrekord University, Shahrekord, Iran.
| | - Behzad Shareghi
- Department of Biology, Faculty of Science, Shahrekord University, Shahrekord, P. O. Box.115, Iran; Central Laboratory, Shahrekord University, Shahrekord, Iran
| | - Sanaz Asgharzadeh
- Department of Biology, Faculty of Science, Shahrekord University, Shahrekord, P. O. Box.115, Iran; Central Laboratory, Shahrekord University, Shahrekord, Iran
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Tongkanarak K, Loupiac C, Neiers F, Chambin O, Srichana T. Evaluating the biomolecular interaction between delamanid/formulations and human serum albumin by fluorescence, CD spectroscopy and SPR: Effects on protein conformation, kinetic and thermodynamic parameters. Colloids Surf B Biointerfaces 2024; 239:113964. [PMID: 38761495 DOI: 10.1016/j.colsurfb.2024.113964] [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: 03/22/2024] [Revised: 04/27/2024] [Accepted: 05/10/2024] [Indexed: 05/20/2024]
Abstract
Delamanid is an anti-tuberculosis drug used for the treatment of drug-resistant tuberculosis. Since delamanid has a high protein bound potential, even patients with low albumin levels should experience high and rapid delamanid clearance. However, the interaction between delamanid and albumin should be better controlled to optimize drug efficacy. This study was designed to evaluate the binding characteristics of delamanid to human serum albumin (HSA) using various methods: fluorescence spectroscopy, circular dichroism (CD), surface plasmon resonance (SPR), and molecular docking simulation. The fluorescence emission band without any shift indicated the interaction was not affected by the polarity of the fluorophore microenvironment. The reduction of fluorescence intensity at 344 nm was proportional to the increment of delamanid concentration as a fluorescence quencher. UV-absorbance measurement at the maximum wavelength (λmax, 280 nm) was evaluated using inner filter effect correction. The HSA conformation change was explained by the intermolecular energy transfer between delamanid and HSA during complex formation. The study, which was conducted at temperatures of 298 K, 303 K, and 310 K, revealed a static quenching mechanism that correlated with a decreased of bimolecular quenching rate constant (kq) and binding constant (Ka) at increased temperatures. The Ka was 1.75-3.16 × 104 M-1 with a specific binding site with stoichiometry 1:1. The negative enthalpy change, negative entropy change, and negative Gibbs free energy change demonstrated an exothermic-spontaneous reaction while van der Waals forces and hydrogen bonds played a vital role in the binding. The molecular displacement approach and molecular docking confirmed that the binding occurred mainly in subdomain IIA, which is a hydrophobic pocket of HSA, with a theoretical binding free energy of -9.33 kcal/mol. SPR exhibited a real time negative sensorgram that resulted from deviation of the reflex angle due to ligand delamanid-HSA complex forming. The binding occurred spontaneously after delamanid was presented to the HSA surface. The SPR mathematical fitting model revealed that the association rate constant (kon) was 2.62 × 108 s-1M-1 and the dissociation rate constant (koff) was 5.65 × 10-3 s-1. The complexes were performed with an association constant (KA) of 4.64 × 1010 M-1 and the dissociation constant (KD) of 2.15 × 10-11 M. The binding constant indicated high binding affinity and high stability of the complex in an equilibrium. Modified CD spectra revealed that conformation of the HSA structure was altered by the presence of delamanid during preparation of the proliposomes that led to the reduction of secondary structure stabilization. This was indicated by the percentage decrease of α-helix. These findings are beneficial to understanding delamanid-HSA binding characteristics as well as the drug administration regimen.
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Affiliation(s)
- Krittawan Tongkanarak
- Drug Delivery System Excellence Center, Department of Pharmaceutical Technology, Faculty of Pharmaceutical Sciences, Prince of Songkla University, Hat Yai, Songkhla 90110, Thailand
| | - Camille Loupiac
- Univ. Bourgogne Franche - Comté, L'Institut Agro, Université de Bourgogne, INRAE, UMR PAM 1517, Joint Unit Food Processing and Microbiology, Food and Wine Physico-Chemistry Unit, 1 esplanade Erasme, Dijon 21000, France
| | - Fabrice Neiers
- Flavour Perception: Molecular Mechanisms (Flavours), Université de Bourgogne, 7 bd Jeanne d'Arc, Dijon 21000, France
| | - Odile Chambin
- Univ. Bourgogne Franche - Comté, L'Institut Agro, Université de Bourgogne, INRAE, UMR PAM 1517, Joint Unit Food Processing and Microbiology, Food and Wine Physico-Chemistry Unit, 1 esplanade Erasme, Dijon 21000, France; Department of Pharmaceutical Technology, Faculty of Health Sciences, Université de Bourgogne, 7 bd Jeanne d'Arc, Dijon Cedex 21079, France
| | - Teerapol Srichana
- Drug Delivery System Excellence Center, Department of Pharmaceutical Technology, Faculty of Pharmaceutical Sciences, Prince of Songkla University, Hat Yai, Songkhla 90110, Thailand.
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Arias-Rodríguez LI, Pablos JL, Vallet-Regí M, Rodríguez-Mendiola MA, Arias-Castro C, Sánchez-Salcedo S, Salinas AJ. Enhancing Osteoblastic Cell Cultures with Gelatin Methacryloyl, Bovine Lactoferrin, and Bioactive Mesoporous Glass Scaffolds Loaded with Distinct Parsley Extracts. Biomolecules 2023; 13:1764. [PMID: 38136635 PMCID: PMC10741674 DOI: 10.3390/biom13121764] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2023] [Revised: 12/05/2023] [Accepted: 12/06/2023] [Indexed: 12/24/2023] Open
Abstract
The increasing interest in innovative solutions for addressing bone defects has driven research into the use of Bioactive Mesoporous Glasses (MBGs). These materials, distinguished by their well-ordered mesoporous structure, possess the capability to accommodate plant extracts with well-established osteogenic properties, including bovine lactoferrin (bLF), as part of their 3D scaffold composition. This harmonizes seamlessly with the ongoing advancements in the field of biomedicine. In this study, we fabricated 3D scaffolds utilizing MBGs loaded with extracts from parsley leaves (PL) and embryogenic cultures (EC), rich in bioactive compounds such as apigenin and kaempferol, which hold potential benefits for bone metabolism. Gelatin Methacryloyl (GelMa) served as the polymer, and bLF was included in the formulation. Cytocompatibility, Runx2 gene expression, ALP enzyme activity, and biomineralization were assessed in preosteoblastic MC3T3-E1 cell cultures. MBGs effectively integrated PL and EC extracts with loadings between 22.6 ± 0.1 and 43.6 ± 0.3 µM for PL and 26.3 ± 0.3 and 46.8 ± 0.4 µM for EC, ensuring cell viability through a release percentage between 28.3% and 59.9%. The incorporation of bLF in the 3D scaffold formulation showed significant differences compared to the control in all assays, even at concentrations below 0.2 µM. Combinations, especially PL + bLF at 0.19 µM, demonstrated additive potential, with superior biomineralization compared to EC. In summary, this study highlights the effectiveness of MBGs in incorporating PL and EC extracts, along with bLF, into 3D scaffolds. The results underscore cytocompatibility, osteogenic activity, and biomineralization, offering exciting potential for future in vivo applications.
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Affiliation(s)
- Laura Isabel Arias-Rodríguez
- Plant Biotechnology Laboratory, Instrumental Analysis Laboratory and Plant Biochemistry Laboratory of the National Technological Institute of Mexico Campus Tlajomulco, 10th km Tlajomulco Highway, Southern Metropolitan Circuit, Tlajomulco de Zúñiga 45640, Jalisco, Mexico; (L.I.A.-R.); (M.A.R.-M.); (C.A.-C.)
| | - Jesús L. Pablos
- Department of Chemistry in Pharmaceutical Sciences, Faculty of Pharmacy, Complutense University of Madrid (UCM).12 de Octubre Hospital Research Institute, Imas12, 28040 Madrid, Spain; (J.L.P.); (M.V.-R.)
| | - María Vallet-Regí
- Department of Chemistry in Pharmaceutical Sciences, Faculty of Pharmacy, Complutense University of Madrid (UCM).12 de Octubre Hospital Research Institute, Imas12, 28040 Madrid, Spain; (J.L.P.); (M.V.-R.)
- Networking Research Center on Bioengineering, Biomaterials and Nanomedicine, CIBER-BBN, 28040 Madrid, Spain
| | - Martha A. Rodríguez-Mendiola
- Plant Biotechnology Laboratory, Instrumental Analysis Laboratory and Plant Biochemistry Laboratory of the National Technological Institute of Mexico Campus Tlajomulco, 10th km Tlajomulco Highway, Southern Metropolitan Circuit, Tlajomulco de Zúñiga 45640, Jalisco, Mexico; (L.I.A.-R.); (M.A.R.-M.); (C.A.-C.)
| | - Carlos Arias-Castro
- Plant Biotechnology Laboratory, Instrumental Analysis Laboratory and Plant Biochemistry Laboratory of the National Technological Institute of Mexico Campus Tlajomulco, 10th km Tlajomulco Highway, Southern Metropolitan Circuit, Tlajomulco de Zúñiga 45640, Jalisco, Mexico; (L.I.A.-R.); (M.A.R.-M.); (C.A.-C.)
| | - Sandra Sánchez-Salcedo
- Department of Chemistry in Pharmaceutical Sciences, Faculty of Pharmacy, Complutense University of Madrid (UCM).12 de Octubre Hospital Research Institute, Imas12, 28040 Madrid, Spain; (J.L.P.); (M.V.-R.)
- Networking Research Center on Bioengineering, Biomaterials and Nanomedicine, CIBER-BBN, 28040 Madrid, Spain
| | - Antonio J. Salinas
- Department of Chemistry in Pharmaceutical Sciences, Faculty of Pharmacy, Complutense University of Madrid (UCM).12 de Octubre Hospital Research Institute, Imas12, 28040 Madrid, Spain; (J.L.P.); (M.V.-R.)
- Networking Research Center on Bioengineering, Biomaterials and Nanomedicine, CIBER-BBN, 28040 Madrid, Spain
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de Sousa ALM, Rizaldo Pinheiro R, Furtado Araujo J, Mesquita Peixoto R, de Azevedo DAA, Cesar Lima AM, Marques Canuto K, Vasconcelos Ribeiro PR, de Queiroz Souza AS, Rocha Souza SC, de Amorim SL, Paula Amaral G, de Souza V, de Morais SM, Andrioli A, da Silva Teixeira MF. In vitro antiviral effect of ethanolic extracts from Azadirachta indica and Melia azedarach against goat lentivirus in colostrum and milk. Sci Rep 2023; 13:4677. [PMID: 36949145 PMCID: PMC10031174 DOI: 10.1038/s41598-023-31455-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2020] [Accepted: 03/13/2023] [Indexed: 03/24/2023] Open
Abstract
This study aimed to evaluate, in vitro, the use of leaf extracts of Azadirachta indica (A. indica) and Melia azedarach (M. azedarach) as antivirals against caprine lentivirus (CLV) in colostrum and milk of goat nannies. These were collected from eight individuals and infected with the standard strain of CLV. Samples were then subdivided into aliquots and treated with 150 µg/mL of crude extract, and with ethyl acetate and methanol fractions for 30, 60, and 90 min. Next, somatic cells from colostrum and milk were co-cultured with cells from the ovine third eyelid. After this step, viral titers of the supernatants collected from treatments with greater efficacy in co-culture were assessed. The organic ethyl acetate fractions of both plants at 90 min possibly inhibited the viral activity of CLV by up to a thousandfold in colostrum. In milk, this inhibition was up to 800 times for the respective Meliaceae. In conclusion, the ethanolic fraction of ethyl acetate from both plants demonstrated efficacy against CLV in samples from colostrum and milk when subjected to treatment, which was more effective in colostrum.
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Affiliation(s)
- Ana Lidia Madeira de Sousa
- Laboratory of Virology (LABOVIR), State University of Ceará (UECE), Fortaleza, CE, Brazil.
- Faculdade Educar da Ibiapaba, Ípu, CE, Brazil.
| | | | | | - Renato Mesquita Peixoto
- Vale do Salgado University Center (UNIVS), Icó, CE, Brazil
- Terra Nordeste College (FATENE), Caucaia, CE, Brazil
| | | | - Ana Milena Cesar Lima
- Scholarship for Regional Scientific Development of the National Council for Scientific and Technological Development (DCR-CNPq/FUNCAP), Level C, Embrapa Goats and Sheep, Sobral, CE, Brazil
| | - Kirley Marques Canuto
- Multiuser Laboratory of Natural Products Chemistry, Embrapa Tropical Agroindustry, Fortaleza, CE, Brazil
| | | | | | | | - Sara Lucena de Amorim
- Department of Veterinary Medicine, Federal University of Rondônia, Rolim de Moura, RO, Brazil
| | | | - Viviane de Souza
- Laboratory of Microbiology, Embrapa Goats and Sheep, Sobral, CE, Brazil
| | - Selene Maia de Morais
- Laboratory of Chemistry and Natural Products (LQPN), Ceará State University, Fortaleza, CE, Brazil
| | - Alice Andrioli
- Laboratory of Virology, Embrapa Goats and Sheep, Sobral, CE, Brazil
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He Q, Mu Q, Wei Z, Peng B, Lan Z, Zhang Y, Yao W, Nie J. Investigation of the binding behavior of bioactive 7-methoxyflavone to human serum albumin by coupling multi-spectroscopic with computational approaches. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2023; 285:121920. [PMID: 36201870 DOI: 10.1016/j.saa.2022.121920] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/02/2022] [Revised: 09/20/2022] [Accepted: 09/20/2022] [Indexed: 06/16/2023]
Abstract
The natural flavonoids with bioactivity as secondary plant metabolites are mostly found in fruits, vegetables, tea and herbs, the distribution and bioavailability of which in vivo depends on the interaction and successive binding with carrier proteins in the systemic circulation. In this paper, the binding behavior of bioactive 7-methoxyflavone (7-MF) with human serum albumin (HSA) was studied with the aid of the combination of multi-spectroscopic methods, molecular docking and molecular dynamic simulation. The results of multi-spectroscopic experiments revealed that 7-MF interacted with HSA predominantly via fluorescence static quenching and the microenvironment around the fluorophore Trp residues in HSA became more hydrophilicity with the binding of 7-MF. Thermodynamic analysis demonstrated that hydrogen bonds and van der Waals forces played a dominant role in stabilizing the HSA-7-MF complex. Moreover, the docking experiment and molecular dynamic simulation further confirmed that 7-MF could enter the active cavity of HSA and caused more stable conformation and change of secondary structure of HSA through forming hydrogen bond. The exploration of the mechanism of 7-MF binding to HSA lights a new avenue to understand the stability, transport and distribution of 7-MF and 7-MF may hold great potential to be extended as a promising alternative of dietary supplements or pharmaceutical agents.
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Affiliation(s)
- Qing He
- Guangxi Colleges and Universities Key Laboratory of Food Safety and Detection, College of Chemistry and Bioengineering, Guilin University of Technology, Guilin 541004, China
| | - Qi'er Mu
- Guangxi Colleges and Universities Key Laboratory of Food Safety and Detection, College of Chemistry and Bioengineering, Guilin University of Technology, Guilin 541004, China
| | - Zhongxun Wei
- Momordica grosvenori Research Institution, Yongfu County Bureau of Agriculture and Rural Affairs, Guilin 541800, China
| | - Bin Peng
- Momordica grosvenori Research Institution, Yongfu County Bureau of Agriculture and Rural Affairs, Guilin 541800, China
| | - Zhenni Lan
- Guangxi Colleges and Universities Key Laboratory of Food Safety and Detection, College of Chemistry and Bioengineering, Guilin University of Technology, Guilin 541004, China
| | - Yun Zhang
- Guangxi Colleges and Universities Key Laboratory of Food Safety and Detection, College of Chemistry and Bioengineering, Guilin University of Technology, Guilin 541004, China.
| | - Weihao Yao
- Guangxi Colleges and Universities Key Laboratory of Food Safety and Detection, College of Chemistry and Bioengineering, Guilin University of Technology, Guilin 541004, China
| | - Jinfang Nie
- Guangxi Colleges and Universities Key Laboratory of Food Safety and Detection, College of Chemistry and Bioengineering, Guilin University of Technology, Guilin 541004, China.
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Interaction of Pelargonium sidoides Compounds with Lactoferrin and SARS-CoV-2: Insights from Molecular Simulations. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2022; 19:ijerph19095254. [PMID: 35564648 PMCID: PMC9101775 DOI: 10.3390/ijerph19095254] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/03/2022] [Revised: 04/17/2022] [Accepted: 04/24/2022] [Indexed: 02/07/2023]
Abstract
(1) Background: Pelargonium sidoides extracts and lactoferrin are two important natural, anti-inflammatory, and antiviral agents, which can interfere with the early stages of SARS-CoV-2 infection. Molecular docking and molecular dynamics simulation approaches have been applied to check for the occurrence of interactions of the Pelargonium sidoides compounds with lactoferrin and with SARS-CoV-2 components. (2) Methods: Computational methods have been applied to confirm the hypothesis of a direct interaction between PEL compounds and the lactoferrin protein and between Pelargonium sidoides compounds and SARS-CoV-2 Spike, 3CLPro, RdRp proteins, and membrane. Selected high-score complexes were structurally investigated through classical molecular dynamics simulation, while the interaction energies were evaluated using the molecular mechanics energies combined with generalized Born and surface area continuum solvation method. (3) Results: Computational analyses suggested that Pelargonium sidoides extracts can interact with lactoferrin without altering its structural and dynamical properties. Furthermore, Pelargonium sidoides compounds should have the ability to interfere with the Spike glycoprotein, the 3CLPro, and the lipid membrane, probably affecting the functional properties of the proteins inserted in the double layer. (4) Conclusion: Our findings suggest that Pelargonium sidoides may interfere with the mechanism of infection of SARS-CoV-2, especially in the early stages.
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Hemoglobin Precipitation: An Index of In Vitro Vasoconstrictive Activities of Methanol Leaf Extracts of C roton megalocarpus Hutch and Lantana camara Linn. EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE 2021; 2021:3817106. [PMID: 34876913 PMCID: PMC8645380 DOI: 10.1155/2021/3817106] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/30/2021] [Revised: 09/04/2021] [Accepted: 11/03/2021] [Indexed: 12/04/2022]
Abstract
The function of innate hemostasis aids the body in bleeding control, preventing the loss of excessive amounts of blood following low-degree injuries. However, injuries of a higher degree may require extrinsic intervention to stop life-threatening blood loss. Astringent agents' actions result in mechanical constriction of small blood vessels and shrinkage of body tissues, thereby stopping blood loss. This enhances the primary phase of hemostasis, where vasoconstriction is the main mechanism at play during the initial response to injury. The effects of plant extracts on protein precipitation have been linked to blood vessel vasoconstriction. Traditionally, the leaves of Croton megalocarpus Hutch and Lantana camara Linn plants are used by communities living in Makueni County, Kenya, for peripheral bleeding control. However, the effects of extracts of both plants on hemoglobin precipitation have not been evaluated scientifically. In the current study, the activities of methanol extracts of C. megalocarpus (H.) and L. camara (L.) on blood protein precipitation were investigated. The leaves were harvested, cleaned, air-dried, milled, and extracted in absolute methanol before being concentrated into dry powders. A qualitative phytochemical screen revealed the presence of terpenoids, steroids, tannins, phenols, flavonoids, reducing sugars, cardiac glycosides, and carbohydrates in the methanol extract of C. megalocarpus (H.). The methanol extracts of L. camara (L.) contained cardiac glycosides, saponins, tannins, phenols, terpenoids, reducing sugars, and carbohydrates. The hemoglobin precipitation ability of various concentrations of extracts using mice samples was presented as relative astringency following the tannic acid external standard method. Methanol extracts C. megalocarpus (H.) and L. camara (L.) had significantly higher relative astringency compared with the normal control, indicating a protein precipitating activity. The relative astringency observed in both plant extracts is linked to the activity of tannins, phenols, flavonoids, and saponins detected during preliminary phytochemical screening.
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Raychaudhuri R, Pandey A, Das S, Nannuri SH, Joseph A, George SD, Vincent AP, Mutalik S. Nanoparticle impregnated self-supporting protein gel for enhanced reduction in oxidative stress: A molecular dynamics insight for lactoferrin-polyphenol interaction. Int J Biol Macromol 2021; 189:100-113. [PMID: 34411613 DOI: 10.1016/j.ijbiomac.2021.08.089] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2021] [Revised: 08/05/2021] [Accepted: 08/10/2021] [Indexed: 12/01/2022]
Abstract
In the present work, lactoferrin (Lf) based nanoparticle incorporated self-supporting gel encapsulating a flavonoid, quercetin (Q), was developed. The complex formation between Lf and Q was assessed using molecular docking and dynamics simulation that lactoferrin and quercetin showed strong interaction and binding supporting hydrophobic interaction. The microscopic, spectroscopic, and x-ray techniques were used to characterize the gel extensively. In vitro drug release was studied to understand the release pattern of quercetin from the protein gel. The viscosity of the gel and its rheological characteristics were determined using a Brookfield viscometer. Ex vivo skin permeation studies using vertical diffusion cells were carried out to understand its skin permeation properties. The gel showed strong anti-oxidant activity using the DPPH scavenging assay. The enhanced effect of the Lf-Q complex on antioxidant enzyme activity (superoxide dismutase, catalase, and malondialdehyde), was supported by molecular dynamics, surface hydrophobicity, and in vitro studies. To investigate the effect of the gel on angiogenesis, the chorioallantoic membrane assay was performed and its compatibility with erythrocytes was also assessed. Suitability for topical administration was assessed using skin irritation studies performed on Sprague Dawley rats. The overall results suggest that the developed NiPG is suitable for cutaneous localization of quercetin with enhanced antioxidant activity.
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Affiliation(s)
- Ruchira Raychaudhuri
- Department of Pharmaceutics, Manipal College of Pharmaceutical Sciences, Manipal Academy of Higher Education, Manipal 576104, Karnataka State, India
| | - Abhijeet Pandey
- Department of Pharmaceutics, Manipal College of Pharmaceutical Sciences, Manipal Academy of Higher Education, Manipal 576104, Karnataka State, India
| | - Subham Das
- Department of Pharmaceutical Chemistry, Manipal College of Pharmaceutical Sciences, Manipal Academy of Higher Education, Manipal 576104, Karnataka State, India
| | - Shivanand H Nannuri
- Department of Atomic and Molecular Physics, Manipal Academy of Higher Education, Manipal 576104, Karnataka State, India
| | - Alex Joseph
- Department of Pharmaceutical Chemistry, Manipal College of Pharmaceutical Sciences, Manipal Academy of Higher Education, Manipal 576104, Karnataka State, India
| | - Sajan D George
- Department of Atomic and Molecular Physics, Manipal Academy of Higher Education, Manipal 576104, Karnataka State, India
| | - Anita P Vincent
- Department of Research and Development, Glanbia Nutritionals, Twin Falls, ID, USA
| | - Srinivas Mutalik
- Department of Pharmaceutics, Manipal College of Pharmaceutical Sciences, Manipal Academy of Higher Education, Manipal 576104, Karnataka State, India.
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Montone AMI, Papaianni M, Malvano F, Capuano F, Capparelli R, Albanese D. Lactoferrin, Quercetin, and Hydroxyapatite Act Synergistically against Pseudomonas fluorescens. Int J Mol Sci 2021; 22:ijms22179247. [PMID: 34502150 PMCID: PMC8431635 DOI: 10.3390/ijms22179247] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2021] [Revised: 08/23/2021] [Accepted: 08/24/2021] [Indexed: 01/01/2023] Open
Abstract
Pseudomonas fluorescens is an opportunistic, psychotropic pathogen that can live in different environments, such as plant, soil, or water surfaces, and it is associated with food spoilage. Bioactive compounds can be used as antimicrobials and can be added into packaging systems. Quercetin and lactoferrin are the best candidates for the development of a complex of the two molecules absorbed on bio combability structure as hydroxyapatite. The minimum inhibiting concentration (MIC) of single components and of the complex dropped down the single MIC value against Pseudomonas fluorescens. Characterization analysis of the complex was performed by means SEM and zeta-potential analysis. Then, the synergistic activity (Csyn) of single components and the complex was calculated. Finally, the synergistic activity was confirmed, testing in vitro its anti-inflammatory activity on U937 macrophage-like human cell line. In conclusion, the peculiarity of our study consists of optimizing the specific propriety of each component: the affinity of lactoferrin for LPS; that of quercetin for the bacterial membrane. These proprieties make the complex a good candidate in food industry as antimicrobial compounds, and as functional food.
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Affiliation(s)
- Angela Michela Immacolata Montone
- Department of Industrial Engineering, University of Salerno, 84084 Salerno, Italy; (A.M.I.M.); (F.M.); (D.A.)
- Department of Food Inspection, Istituto Zooprofilattico Sperimentale del Mezzogiorno, 80055 Naples, Italy;
| | - Marina Papaianni
- Department of Agriculture, University of Naples “Federico II”, 80055 Naples, Italy;
| | - Francesca Malvano
- Department of Industrial Engineering, University of Salerno, 84084 Salerno, Italy; (A.M.I.M.); (F.M.); (D.A.)
| | - Federico Capuano
- Department of Food Inspection, Istituto Zooprofilattico Sperimentale del Mezzogiorno, 80055 Naples, Italy;
| | - Rosanna Capparelli
- Department of Agriculture, University of Naples “Federico II”, 80055 Naples, Italy;
- Correspondence:
| | - Donatella Albanese
- Department of Industrial Engineering, University of Salerno, 84084 Salerno, Italy; (A.M.I.M.); (F.M.); (D.A.)
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11
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de Castro ASB, de Paula HMC, Coelho YL, Hudson EA, Pires ACS, da Silva LHM. Kinetic and thermodynamic of lactoferrin - Ethoxylated-nonionic surfactants supramolecular complex formation. Int J Biol Macromol 2021; 187:325-331. [PMID: 34280448 DOI: 10.1016/j.ijbiomac.2021.07.087] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2021] [Revised: 06/28/2021] [Accepted: 07/13/2021] [Indexed: 11/19/2022]
Abstract
Understanding nonionic surfactant-protein interactions is fundamental from both technological and scientific points of view. However, there is a complete absence of kinetic data for such interactions. We employed surface plasmon resonance (SPR) to determine the kinetic and thermodynamic parameters of bovine lactoferrin-Brij58 interactions at various temperatures under physiological conditions (pH 7.4). The adsorption process was accelerated with increasing temperature, while the desorption rate decreased, resulting in a more thermodynamically stable complex. The kinetic energetic parameters obtained for the formation of the activated complex, [bLF-Brij58]‡, indicated that the potential energy barrier for [bLF-Brij58]‡ formation arises primarily from the reduction in system entropy. [bLF-Brij58]○ formation was entropically driven, indicating that hydrophobic interactions play a fundamental role in bLF interactions with Brij58.
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Affiliation(s)
- Alan Stampini Benhame de Castro
- Colloidal, macromolecular and Green Chemistry (QUIVECOM), Chemistry Department, Federal University of Viçosa, Av. PH Rolfs, s/n, Viçosa, MG 36570-900, Brazil
| | - Hauster Maximiler Campos de Paula
- Colloidal, macromolecular and Green Chemistry (QUIVECOM), Chemistry Department, Federal University of Viçosa, Av. PH Rolfs, s/n, Viçosa, MG 36570-900, Brazil
| | - Yara Luiza Coelho
- Colloidal, macromolecular and Green Chemistry (QUIVECOM), Chemistry Department, Federal University of Viçosa, Av. PH Rolfs, s/n, Viçosa, MG 36570-900, Brazil; Colloid Chemistry Group, Chemistry Institute, Federal University of Alfenas (UNIFAL-MG), Rua Gabriel Monteiro da Silva, 700, 37130-000 Alfenas, MG, Brazil
| | - Eliara Acipreste Hudson
- Applied Molecular Thermodynamic (THERMA), Food Technology Department, Federal University of Viçosa, Av. PH Rolfs, s/n, Viçosa, MG 36570-900, Brazil
| | - Ana Clarissa S Pires
- Applied Molecular Thermodynamic (THERMA), Food Technology Department, Federal University of Viçosa, Av. PH Rolfs, s/n, Viçosa, MG 36570-900, Brazil
| | - Luis Henrique M da Silva
- Colloidal, macromolecular and Green Chemistry (QUIVECOM), Chemistry Department, Federal University of Viçosa, Av. PH Rolfs, s/n, Viçosa, MG 36570-900, Brazil.
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12
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Sandu N, Chilom CG, Popescu AI. Structural and molecular aspects of flavonoids as ligands for serum transferrin. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2021; 254:119600. [PMID: 33677206 DOI: 10.1016/j.saa.2021.119600] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/31/2020] [Revised: 02/04/2021] [Accepted: 02/05/2021] [Indexed: 06/12/2023]
Abstract
Human serum transferrin (HST) acts as a carrier for Fe3+ and other ions. Binding of flavonoids to HST produces changes in the protein structure with direct implication on iron delivery into cells. We investigate the binding mechanism and affinity towards HST of three flavonoids: rutin, luteolin, and apigenin by different techniques: UV-Vis, fluorescence, fluorescence resonance energy transfer (FRET) combined with molecular docking. UV-Vis results indicate an interaction between flavonoids and HST. It was observed that HST fluorescence was quenched by these three flavonoids via a static process. All the interactions were moderate and the main driving forces are hydrophobic (ΔH > 0 and ΔS > 0) for rutin and luteolin binding or electrostatic (ΔH < 0 and ΔS > 0) for apigenin binding. FRET and molecular docking studies confirm the fluorescence static quenching mechanism by flavonoid binding. The binding of all three flavonoids increases HST stability. These results present the potential use of HST in target-oriented delivery of flavonoids and possibly other drugs into cells.
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Affiliation(s)
- Nicoleta Sandu
- Department of Electricity, Solid State and Biophysics, Faculty of Physics, University of Bucharest, Măgurele, Romania
| | - Claudia G Chilom
- Department of Electricity, Solid State and Biophysics, Faculty of Physics, University of Bucharest, Măgurele, Romania.
| | - Aurel I Popescu
- Department of Electricity, Solid State and Biophysics, Faculty of Physics, University of Bucharest, Măgurele, Romania
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13
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Joshi N, Tripathi DK, Nagar N, Poluri KM. Hydroxyl Groups on Annular Ring-B Dictate the Affinities of Flavonol-CCL2 Chemokine Binding Interactions. ACS OMEGA 2021; 6:10306-10317. [PMID: 34056184 PMCID: PMC8153786 DOI: 10.1021/acsomega.1c00655] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/04/2021] [Accepted: 03/26/2021] [Indexed: 05/26/2023]
Abstract
Owing to the astounding biological properties, dietary plant flavonoids have received considerable attention toward developing unique supplementary food sources to prevent various ailments. Chemokines are chemotactic proteins involved in leukocyte trafficking through their interactions with G-protein-coupled receptors and cell surface glycosaminoglycans (GAGs). CCL2 chemokine, a foremost member of CC chemokines, is associated with the pathogenesis of various inflammatory infirmities, thus making the CCL2-Receptor (CCR2)/GAG axis a potential pharmacological target. The current study is designed to unravel the structural details of CCL2-flavonol interactions. Molecular interactions between flavonols (kaempferol, quercetin, and myricetin) with human/murine CCL2 orthologs and their monomeric/dimeric variants were systematically investigated using a combination of biophysical approaches. Fluorescence studies have unveiled that flavonols interact with CCL2 orthologs specifically but with differential affinities. The dissociation constants (K d) were in the range of 10-5-10-7 μM. The NMR- and computational docking-based outcomes have strongly suggested that the flavonols interact with CCL2, comprising the N-terminal and β1- and β3-sheets. It has also been observed that the number of hydroxyl groups on the annular ring-B imposed a significant cumulative effect on the binding affinities of flavonols for CCL2 chemokine. Further, the binding surface of these flavonols to CCL2 orthologs was observed to be extensively overlapped with that of the receptor/GAG-binding surface, thus suggesting attenuation of CCL2-CCR2/GAG interactions in their presence. Considering the pivotal role of CCL2 during monocyte/macrophage trafficking and the immunomodulatory features of these flavonols, their direct interactions highlight the promising role of flavonols as nutraceuticals.
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14
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Flavonoids-Macromolecules Interactions in Human Diseases with Focus on Alzheimer, Atherosclerosis and Cancer. Antioxidants (Basel) 2021; 10:antiox10030423. [PMID: 33802084 PMCID: PMC7999194 DOI: 10.3390/antiox10030423] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2021] [Revised: 02/24/2021] [Accepted: 03/02/2021] [Indexed: 12/16/2022] Open
Abstract
Flavonoids, a class of polyphenols, consumed daily in our diet, are associated with a reduced risk for oxidative stress (OS)-related chronic diseases, such as cardiovascular disease, neurodegenerative diseases, cancer, and inflammation. The involvement of flavonoids with OS-related chronic diseases have been traditionally attributed to their antioxidant activity. However, evidence from recent studies indicate that flavonoids' beneficial impact may be assigned to their interaction with cellular macromolecules, rather than exerting a direct antioxidant effect. This review provides an overview of the recent evolving research on interactions between the flavonoids and lipoproteins, proteins, chromatin, DNA, and cell-signaling molecules that are involved in the OS-related chronic diseases; it focuses on the mechanisms by which flavonoids attenuate the development of the aforementioned chronic diseases via direct and indirect effects on gene expression and cellular functions. The current review summarizes data from the literature and from our recent research and then compares specific flavonoids' interactions with their targets, focusing on flavonoid structure-activity relationships. In addition, the various methods of evaluating flavonoid-protein and flavonoid-DNA interactions are presented. Our aim is to shed light on flavonoids action in the body, beyond their well-established, direct antioxidant activity, and to provide insights into the mechanisms by which these small molecules, consumed daily, influence cellular functions.
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15
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Banun VJ, Rewatkar P, Chaudhary Z, Qu Z, Janjua T, Patil A, Wu Y, Ta HT, Bansal N, Miles JA, Ross BP, Kumeria T, Popat A. Protein Nanoparticles for Enhanced Oral Delivery of Coenzyme-Q10: in Vitro and in Silico Studies. ACS Biomater Sci Eng 2021. [PMID: 33617219 DOI: 10.1021/acsbiomaterials.0c01354] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Coenzyme-Q10 (CoQ10) is a hydrophobic benzoquinone with antioxidant and anti-inflammatory properties. It is known to reduce oxidative stress in various health conditions. However, due to the low solubility, permeability, stability, and poor oral bioavailability, the oral dose of CoQ10 required for the desired therapeutic effect is very high. In the present study, CoQ10 is encapsulated into two milk derived proteins β-lactoglobulin and lactoferrin (BLG and LF) to produce self-assembled nanostructures of around 100-300 nm with high encapsulation efficiency (5-10% w/w). Both CoQ10-BLG and CoQ10-LF nanoparticles (NPs) significantly improved the aqueous solubility of CoQ10 60-fold and 300-fold, compared to CoQ10 alone, which hardly dissolves in water. Insight into the difference in solubility enhancement between BLG and LF was obtained using in silico modeling, which predicted that LF possesses multiple prospective CoQ10 binding sites, potentially enabling greater loading of CoQ10 on LF compared to BLG, which was predicted to be less capable of binding CoQ10. At pH 7.4, CoQ10-LF NPs showed a burst release between 30 min and 2 h then plateaued at 12 h with 30% of the total drug released over 48 h. However, pure CoQ10-BLG and pure CoQ10 had a significantly lower release rate with less than 15% and 8% cumulative release in 48 h, respectively. Most importantly, both BLG and LF NPs significantly improved CoQ10 permeability compared to the pre-dissolved drug across the Caco-2 monolayer with up to 2.5-fold apparent permeability enhancement for CoQ10-LF-further confirming the utility of this nanoencapsulation approach. Finally, in murine macrophage cells (J774A.1), CoQ10-LF NPs displayed significantly higher anti-ROS properties compared to CoQ10 (predissolved in DMSO) without affecting the cell viability. This study paves the way in improving oral bioavailability of poorly soluble drugs and nutraceuticals using milk-based self-assembled nanoparticles.
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Affiliation(s)
- Vanessa Jane Banun
- School of Pharmacy, The University of Queensland, Brisbane, Queensland 4072, Australia
| | - Prarthana Rewatkar
- School of Pharmacy, The University of Queensland, Brisbane, Queensland 4072, Australia
| | - Zanib Chaudhary
- School of Pharmacy, The University of Queensland, Brisbane, Queensland 4072, Australia
| | - Zhi Qu
- School of Pharmacy, The University of Queensland, Brisbane, Queensland 4072, Australia
| | - Taskeen Janjua
- School of Pharmacy, The University of Queensland, Brisbane, Queensland 4072, Australia
| | - Anuja Patil
- School of Pharmacy, The University of Queensland, Brisbane, Queensland 4072, Australia
| | - Yuao Wu
- Australian Institute for Bioengineering and Nanotechnology, The University of Queensland, Brisbane, Queensland, Australia.,Queensland Micro- and Nanotechnology Centre, Griffith University, Brisbane, Queensland, Australia
| | - Hang T Ta
- School of Pharmacy, The University of Queensland, Brisbane, Queensland 4072, Australia.,Australian Institute for Bioengineering and Nanotechnology, The University of Queensland, Brisbane, Queensland, Australia.,Queensland Micro- and Nanotechnology Centre, Griffith University, Brisbane, Queensland, Australia.,School of Environment and Science, Griffith University, Brisbane, Queensland, Australia
| | - Nidhi Bansal
- School of Pharmacy, The University of Queensland, Brisbane, Queensland 4072, Australia.,School of Agriculture and Food Sciences, The University of Queensland, Brisbane, Queensland 4072, Australia
| | - Jared A Miles
- School of Pharmacy, The University of Queensland, Brisbane, Queensland 4072, Australia
| | - Benjamin P Ross
- School of Pharmacy, The University of Queensland, Brisbane, Queensland 4072, Australia
| | - Tushar Kumeria
- School of Pharmacy, The University of Queensland, Brisbane, Queensland 4072, Australia.,School of Materials Science and Engineering, The University of New South Wales, Sydney, New South Wales NSW2052, Australia
| | - Amirali Popat
- School of Pharmacy, The University of Queensland, Brisbane, Queensland 4072, Australia.,Mater Research Institute, The University of Queensland, Translational Research Institute, 37 Kent St, Woolloongabba, Queensland 4102, Australia
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16
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Huang J, He Z, Cheng R, Cheng Z, Wang S, Wu X, Niu B, Shen GX, Liao X. Assessment of binding interaction dihydromyricetin and myricetin with bovine lactoferrin and effects on antioxidant activity. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2020; 243:118731. [PMID: 32827907 DOI: 10.1016/j.saa.2020.118731] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/24/2020] [Revised: 07/05/2020] [Accepted: 07/07/2020] [Indexed: 06/11/2023]
Abstract
The binding interactions of bovine lactoferrin (BLF) with two flavonoids dihydromyricetin (DMY) and myricetin (MY) were investigated by the multi-spectroscopic, microscale thermophoresis (MST) techniques, molecular docking, and then their antioxidant activities were studied by detection of free radical scavenging activity against DPPH. Results of UV-vis and fluorescence spectroscopies showed that DMY/MY and BLF formed the ground state complex through the static quenching mechanism. Moreover, MY with more planar stereochemical structure had higher affinity for BLF than DMY with twisted stereochemical structure, according to the binding constant (Kb), free energy change (ΔG°), dissociation constant (Kd) and donor-acceptor distance (r). Thermodynamic parameters revealed that hydrogen bond and van der Waals force were major forces in the formation of BLF-DMY complex, while hydrophobic interactions played major roles in the formation of BLF-DMY complex. The circular dichroism (CD) study indicated that MY induced more conformational change in BLF than DMY. Furthermore, molecular modeling provided insights into the difference of binding interactions between BLF and two flavonoids. Finally, the radical scavenging activity assays indicated the presence of BLF delayed the decrease in antioxidant capacities of two flavonoids. These results were helpful to understand the binding mechanism and biological effects of non-covalent BLF-flavonoid interaction.
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Affiliation(s)
- Junyi Huang
- Laboratory of Food Nutrition and Chronic Disease Intervention, School of Life Sciences, Shanghai University, Shanghai 200444, PR China
| | - Ziyu He
- Laboratory of Food Nutrition and Chronic Disease Intervention, School of Life Sciences, Shanghai University, Shanghai 200444, PR China
| | - Runqing Cheng
- Laboratory of Food Nutrition and Chronic Disease Intervention, School of Life Sciences, Shanghai University, Shanghai 200444, PR China
| | - Zhuo Cheng
- Laboratory of Food Nutrition and Chronic Disease Intervention, School of Life Sciences, Shanghai University, Shanghai 200444, PR China
| | - Shanshan Wang
- Laboratory of Food Nutrition and Chronic Disease Intervention, School of Life Sciences, Shanghai University, Shanghai 200444, PR China
| | - Xianyong Wu
- Laboratory of Food Nutrition and Chronic Disease Intervention, School of Life Sciences, Shanghai University, Shanghai 200444, PR China
| | - Bing Niu
- Laboratory of Food Nutrition and Chronic Disease Intervention, School of Life Sciences, Shanghai University, Shanghai 200444, PR China
| | - Garry X Shen
- Departments of Internal Medicine and Food and Human Nutritional Sciences, University of Manitoba, Canada.
| | - Xianyan Liao
- Laboratory of Food Nutrition and Chronic Disease Intervention, School of Life Sciences, Shanghai University, Shanghai 200444, PR China.
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17
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Effects of genipin concentration on cross-linked β-casein micelles as nanocarrier of naringenin: Colloidal properties, structural characterization and controlled release. Food Hydrocoll 2020. [DOI: 10.1016/j.foodhyd.2020.105989] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
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18
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Nunes NM, Coelho YL, Castro JS, Vidigal MCTR, Mendes TAO, da Silva LHM, Pires ACS. Naringenin-lactoferrin binding: Impact on naringenin bitterness and thermodynamic characterization of the complex. Food Chem 2020; 331:127337. [DOI: 10.1016/j.foodchem.2020.127337] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2020] [Revised: 05/21/2020] [Accepted: 06/12/2020] [Indexed: 12/14/2022]
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19
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Terrazas-López M, Lobo-Galo N, Aguirre-Reyes LG, Cuen-Andrade JL, de la Rosa LA, Alvarez-Parrilla E, Martínez-Martínez A, Díaz-Sánchez ÁG. Interaction of N-succinyl-diaminopimelate desuccinylase with flavonoids. Biochimie 2020; 177:198-212. [DOI: 10.1016/j.biochi.2020.08.016] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2019] [Revised: 08/03/2020] [Accepted: 08/21/2020] [Indexed: 12/27/2022]
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20
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Pang J, Xiao Q, Yan H, Cao Y, Miao J, Wang S, Li X, Li H, Cheng Z. Bovine Lactoferrin Quantification in Dairy Products by a Simple Immunoaffinity Magnetic Purification Method Coupled with High-Performance Liquid Chromatography with Fluorescence Detection. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2020; 68:892-898. [PMID: 31891506 DOI: 10.1021/acs.jafc.9b06043] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
This study described a simple, specific, and sensitive method using immunoaffinity magnetic purification coupled with high-performance liquid chromatography-fluorescence (HPLC-FL) detection for determination of bovine lactoferrin (bLf) in dairy products. BLf was selectively extracted from dairy products using immunoaffinity beads and then detected by HPLC-FL with its intrinsic fluorescence. During the analysis, standard solutions of bLf were pretreated with Tween 20, an anti-adsorptive agent, for blocking the nonspecific binding of bLf to polypropylene tubes. The calibration curve was linear over the range of 0.8-30 μg mL-1. The validated method was successfully applied to measure bLf at the intact level in dairy products.
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Affiliation(s)
- Jingjing Pang
- School of Pharmacy , Weifang Medical University , 7166 Baotong West Street , Weifang , Shandong 261053 , China
| | - Qianqian Xiao
- School of Pharmacy , Weifang Medical University , 7166 Baotong West Street , Weifang , Shandong 261053 , China
| | - Han Yan
- School of Pharmacy , Weifang Medical University , 7166 Baotong West Street , Weifang , Shandong 261053 , China
| | - Yanqiu Cao
- School of Pharmacy , Weifang Medical University , 7166 Baotong West Street , Weifang , Shandong 261053 , China
| | - Junjie Miao
- School of Pharmacy , Weifang Medical University , 7166 Baotong West Street , Weifang , Shandong 261053 , China
| | - Simin Wang
- School of Pharmacy , Weifang Medical University , 7166 Baotong West Street , Weifang , Shandong 261053 , China
| | - Xinfei Li
- School of Pharmacy , Weifang Medical University , 7166 Baotong West Street , Weifang , Shandong 261053 , China
| | - Hao Li
- School of Pharmacy , Weifang Medical University , 7166 Baotong West Street , Weifang , Shandong 261053 , China
| | - Zhongzhe Cheng
- School of Pharmacy , Weifang Medical University , 7166 Baotong West Street , Weifang , Shandong 261053 , China
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21
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Liang R, Xie J, Zhang C, Zhang M, Huang H, Huo H, Cao X, Niu B. Identifying Cancer Targets Based on Machine Learning Methods via Chou's 5-steps Rule and General Pseudo Components. Curr Top Med Chem 2019; 19:2301-2317. [PMID: 31622219 DOI: 10.2174/1568026619666191016155543] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2019] [Revised: 07/19/2019] [Accepted: 08/26/2019] [Indexed: 01/09/2023]
Abstract
In recent years, the successful implementation of human genome project has made people realize that genetic, environmental and lifestyle factors should be combined together to study cancer due to the complexity and various forms of the disease. The increasing availability and growth rate of 'big data' derived from various omics, opens a new window for study and therapy of cancer. In this paper, we will introduce the application of machine learning methods in handling cancer big data including the use of artificial neural networks, support vector machines, ensemble learning and naïve Bayes classifiers.
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Affiliation(s)
- Ruirui Liang
- School of Life Sciences, Shanghai University, Shanghai, 200444, China
| | - Jiayang Xie
- School of Life Sciences, Shanghai University, Shanghai, 200444, China
| | - Chi Zhang
- Foshan Huaxia Eye Hospital, Huaxia Eye Hospital Group, Foshan 528000, China
| | - Mengying Zhang
- School of Life Sciences, Shanghai University, Shanghai, 200444, China
| | - Hai Huang
- School of Life Sciences, Shanghai University, Shanghai, 200444, China
| | - Haizhong Huo
- Department of General Surgery, Shanghai Ninth People's Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai 200011, China
| | - Xin Cao
- Zhongshan Hospital, Institute of Clinical Science, Shanghai Medical College, Fudan University, Shanghai 200032, China
| | - Bing Niu
- School of Life Sciences, Shanghai University, Shanghai, 200444, China
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