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Menandro AS, Péres LO, Bohne C. Solubilization and Photostabilization in a Sodium Deoxycholate Hydrogel of a Neutral Conjugated Thiophene Oligomer and Polymer. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2024; 40:11215-11227. [PMID: 38748867 DOI: 10.1021/acs.langmuir.4c00884] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/29/2024]
Abstract
Oligo(3-hexylthiophene-co-1,4-phenylene) and poly(3-hexylthiophene) were solubilized in sodium deoxycholate self-assemblies in water solutions and hydrogels, with the goal of solubilizing sufficient material in a hydrogel for fluorescence applications. The neutral conjugated oligomer and polymer were incorporated as monomers into the self-assemblies with sodium deoxycholate aggregates, leading to the photoprotection of these neutral conjugated and water-insoluble molecules. Dynamic light scattering, rheology, and fluorescence experiments established that the deoxycholate aggregation and gel formation properties were not altered with the incorporation of the oligomer or polymer into the deoxycholate self-assemblies, showing that this adaptable host system with some molecular recognition elements is a viable strategy to incorporate into hydrogels neutral conjugated molecules as isolated monomers. This strategy has the potential to be used when conjugated molecules are used for fluorescence applications in hydrogels.
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Affiliation(s)
- Alessandra S Menandro
- Laboratory of Hybrid Materials, Federal University of São Paulo, Diadema, SP 09913-030, Brazil
- Department of Chemistry, University of Victoria, PO Box 1700 STN CSC, Victoria, British Columbia V8W 2Y2, Canada
- Centre for Advanced Materials and Related Technology (CAMTEC), University of Victoria, 3800 Finnerty Rd, Victoria, British Columbia V8P 5C2, Canada
| | - Laura O Péres
- Laboratory of Hybrid Materials, Federal University of São Paulo, Diadema, SP 09913-030, Brazil
| | - Cornelia Bohne
- Department of Chemistry, University of Victoria, PO Box 1700 STN CSC, Victoria, British Columbia V8W 2Y2, Canada
- Centre for Advanced Materials and Related Technology (CAMTEC), University of Victoria, 3800 Finnerty Rd, Victoria, British Columbia V8P 5C2, Canada
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Yadav R, Nandy A, Bisoi A, Mukherjee S. Exploring the Specific Role of Iron Center in the Catalytic Activity of Human Serum Transferrin: CTAB-Induced Conformational Changes and Sequestration by Mixed Micelles. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2024; 40:6172-6186. [PMID: 38467540 DOI: 10.1021/acs.langmuir.3c03414] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/13/2024]
Abstract
Conformational changes play a seminal role in modulating the activity of proteins. This concept becomes all the more relevant in the context of metalloproteins, owing to the formation of specific conformation(s) induced by internal perturbations (like a change in pH, ligand binding, or receptor binding), which may carry out the binding and release of the metal ion/ions from the metal binding center of the protein. Herein, we investigated the conformational changes of an iron-binding protein, monoferric human serum transferrin (Fe-hTF), using several spectroscopic approaches. We could reversibly tune the cetyltrimethylammonium bromide (CTAB)-induced conformation of the protein, exploiting the concept of mixed micelles formed by three sequestrating agents: (3-[(3-cholamidopropyl)dimethylammonio]-1-propanesulfonate) hydrate (CHAPS) and two bile salts, namely, sodium cholate (NaC) and sodium deoxycholate (NaDC). The formation of mixed micelles between CTAB and these reagents (CHAPS/NaC/NaDC) results in the sequestration of CTAB molecules from the protein environment and aids the protein in reattaining its native-like structure. However, the guanidinium hydrochloride-induced denatured Fe-hTF did not acquire its native-like structure using these sequestrating agents, which substantiates the exclusive role of mixed micelles in the present study. Apart from this, we found that the conformation of transferrin (adopted in the presence of CTAB) displays pronounced esterase-like activity toward the para-nitrophenyl acetate (PNPA) substrate as compared to native transferrin. We also outlined the impact of the iron center and amino acids surrounding the iron center on the effective catalytic activity in the CTAB medium. We estimated ∼3 times higher specific catalytic efficiency for the iron-depleted Apo-hTF compared to the fully iron-saturated Fe2-hTF in the presence of CTAB.
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Affiliation(s)
- Rahul Yadav
- Department of Chemistry, Indian Institute of Science Education and Research Bhopal, Bhopal Bypass Road, Bhopal 462 066, Madhya Pradesh, India
| | - Atanu Nandy
- Department of Chemistry, Indian Institute of Science Education and Research Bhopal, Bhopal Bypass Road, Bhopal 462 066, Madhya Pradesh, India
| | - Asim Bisoi
- Department of Chemistry, Indian Institute of Science Education and Research Bhopal, Bhopal Bypass Road, Bhopal 462 066, Madhya Pradesh, India
| | - Saptarshi Mukherjee
- Department of Chemistry, Indian Institute of Science Education and Research Bhopal, Bhopal Bypass Road, Bhopal 462 066, Madhya Pradesh, India
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Yang B, Zhang Z, Song J, Qi T, Zeng J, Feng L, Jia X. Interpreting the efficacy enhancement mechanism of Chinese medicine processing from a biopharmaceutic perspective. Chin Med 2024; 19:14. [PMID: 38238801 PMCID: PMC10797928 DOI: 10.1186/s13020-024-00887-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2023] [Accepted: 01/10/2024] [Indexed: 01/22/2024] Open
Abstract
Chinese medicine processing (CMP) is a unique pharmaceutical technology that distinguishes it from natural medicines. Current research primarily focuses on changes in chemical components to understand the mechanisms behind efficacy enhancement in processing. However, this paper presents a novel perspective on the biopharmaceutics of CMP. It provides a comprehensive overview of the current research, emphasizing two crucial aspects: the role of 'heat' during processing and the utilization of processing adjuvants. The paper highlights the generation of easily absorbed components through the hydrolysis of glycosides by 'heat', as well as the facilitation of dissolution, absorption, and targeted distribution of active components through the utilization of processing adjuvants. From a biopharmaceutic perspective, this paper provides a lucid comprehension of the scientific foundation for augmenting the efficacy of CMP. Moreover, it proposes a three-dimensional research framework encompassing chemical reactions, phase transitions, and biopharmaceutical properties to further investigate the mechanisms involved in enhancing the efficacy of CMP.
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Affiliation(s)
- Bing Yang
- State Key Laboratory of Natural Medicines, School of Traditional Chinese Pharmacy, China Pharmaceutical University, Nanjing, 211198, People's Republic of China
| | - Zhubin Zhang
- State Key Laboratory of Natural Medicines, School of Traditional Chinese Pharmacy, China Pharmaceutical University, Nanjing, 211198, People's Republic of China
| | - Jinjing Song
- State Key Laboratory of Natural Medicines, School of Traditional Chinese Pharmacy, China Pharmaceutical University, Nanjing, 211198, People's Republic of China
| | - Tianhao Qi
- State Key Laboratory of Natural Medicines, School of Traditional Chinese Pharmacy, China Pharmaceutical University, Nanjing, 211198, People's Republic of China
| | - Jingqi Zeng
- State Key Laboratory of Natural Medicines, School of Traditional Chinese Pharmacy, China Pharmaceutical University, Nanjing, 211198, People's Republic of China
| | - Liang Feng
- State Key Laboratory of Natural Medicines, School of Traditional Chinese Pharmacy, China Pharmaceutical University, Nanjing, 211198, People's Republic of China.
| | - Xiaobin Jia
- State Key Laboratory of Natural Medicines, School of Traditional Chinese Pharmacy, China Pharmaceutical University, Nanjing, 211198, People's Republic of China.
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Mo Y, Yang Y, Zeng J, Ma W, Guan Y, Guo J, Wu X, Liu D, Feng L, Jia X, Yang B. Enhancing the Biopharmacological Characteristics of Asperosaponin VI: Unveiling Dynamic Self-Assembly Phase Transitions in the Gastrointestinal Environment. Int J Nanomedicine 2023; 18:7335-7358. [PMID: 38084126 PMCID: PMC10710790 DOI: 10.2147/ijn.s436372] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2023] [Accepted: 11/27/2023] [Indexed: 12/18/2023] Open
Abstract
Purpose Asperosaponin VI (ASP VI) as an active ingredient of Dipsacus asperoides, which has a wide range of biological and pharmacological activity. However, its development and application are restricted due to the poor gastrointestinal permeability and oral bioavailability. This investigation aims to reveal the influence of the self-assembled structure by the interaction between ASP VI and endogenous components NaTC and/or DOPC in the gastrointestinal environment on its biopharmaceutical properties, and novelty elucidated the molecular mechanism for the formation of self-assembled nanomicelles. Methods This change in phase state in gastrointestinal fluids is characterized by dynamic light scattering (DLS) and transmission electron microscope (TEM). UPLC-Q-TOF-MS was used to analyze the composition of phase components and the exposure of nanomicelles in vivo. Molecular dynamics simulation (MDS) was applied to preliminarily elucidate the self-assembly mechanism of ASP VI in the gastrointestinal environment. Furthermore, theS8 promoting absorption mechanism of nanomicelles were investigated through in vivo pharmacokinetic experiments, parallel artificial membrane permeability assay (PAMPA), quadruple single-pass intestinal perfusion in rats, and Caco-2 cell monolayer model. Results We demonstrated that the ASP VI could spontaneously form dynamic self-assembled structures with sodium taurocholate (NaTC) and dipalmitoyl phosphatidylcholine (DOPC) during gastrointestinal solubilization, which promoted the gastrointestinal absorption and permeability of ASP VI and increased its exposure in vivo, thus improving the biopharmacological characteristics of ASP VI. Moreover, ASP VI-NaTC-DOPC-self-assembled nanostructures (ASP VI-NaTC-DOPC-SAN) manifested higher cellular uptake in Caco-2 cells as evidenced by flow cytometry and confocal microscopy, and this study also preliminarily revealed the mechanism of self-assembly formation of ASP VI with endogenous components NaTC and DOPC driven by electrostatic and hydrogen bonding interactions. Conclusion This study provides evidence that the dynamic self-assembled phase transition may play a key role in improving the biopharmacological characteristics of insoluble or low permeability active ingredients during the gastrointestinal dissolution of Chinese medicines.
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Affiliation(s)
- Yulin Mo
- School of Traditional Chinese Pharmacy, China Pharmaceutical University, Nanjing, 211198, People’s Republic of China
| | - Yanjun Yang
- School of Traditional Chinese Pharmacy, China Pharmaceutical University, Nanjing, 211198, People’s Republic of China
| | - Jingqi Zeng
- School of Traditional Chinese Pharmacy, China Pharmaceutical University, Nanjing, 211198, People’s Republic of China
| | - Weikun Ma
- School of Traditional Chinese Pharmacy, China Pharmaceutical University, Nanjing, 211198, People’s Republic of China
| | - Yuxin Guan
- School of Traditional Chinese Pharmacy, China Pharmaceutical University, Nanjing, 211198, People’s Republic of China
| | - Jingxi Guo
- School of Traditional Chinese Pharmacy, China Pharmaceutical University, Nanjing, 211198, People’s Republic of China
| | - Xiaochun Wu
- School of Traditional Chinese Pharmacy, China Pharmaceutical University, Nanjing, 211198, People’s Republic of China
| | - Dingkun Liu
- School of Traditional Chinese Pharmacy, China Pharmaceutical University, Nanjing, 211198, People’s Republic of China
| | - Liang Feng
- School of Traditional Chinese Pharmacy, China Pharmaceutical University, Nanjing, 211198, People’s Republic of China
- State Key Laboratory of Natural Medicines, China Pharmaceutical University, Nanjing, 211198, People’s Republic of China
| | - Xiaobin Jia
- School of Traditional Chinese Pharmacy, China Pharmaceutical University, Nanjing, 211198, People’s Republic of China
- State Key Laboratory of Natural Medicines, China Pharmaceutical University, Nanjing, 211198, People’s Republic of China
| | - Bing Yang
- School of Traditional Chinese Pharmacy, China Pharmaceutical University, Nanjing, 211198, People’s Republic of China
- State Key Laboratory of Natural Medicines, China Pharmaceutical University, Nanjing, 211198, People’s Republic of China
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Yang B, Wu X, Zeng J, Song J, Qi T, Yang Y, Liu D, Mo Y, He M, Feng L, Jia X. A Multi-Component Nano-Co-Delivery System Utilizing Astragalus Polysaccharides as Carriers for Improving Biopharmaceutical Properties of Astragalus Flavonoids. Int J Nanomedicine 2023; 18:6705-6724. [PMID: 38026532 PMCID: PMC10656867 DOI: 10.2147/ijn.s434196] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2023] [Accepted: 10/18/2023] [Indexed: 12/01/2023] Open
Abstract
Purpose Enhancing the dissolution, permeation and absorption of active components with low solubility and poor permeability is crucial for maximizing therapeutic efficacy and optimizing functionality. The objective of this study is to investigate the potential of natural polysaccharides as carriers to improve the biopharmaceutical properties of active components. Methods In this study, we employed four representative flavonoids in Astragali Radix, namely Calycosin-7-O-β-D-glucoside (CAG), Ononin (ON), Calycosin (CA) and Formononetin (FMN), as a demonstration to evaluate the potential of Astragalus polysaccharides (APS) as carriers to improve the biopharmaceutical properties, sush as solubility, permeability, and absorption in vivo. In addition, the microstructure of the flavonoids-APS complexes was characterized, and the interaction mechanism between APS and flavonoids was investigated using multispectral technique and molecular dynamics simulation. Results The results showed that APS can self-assemble into aggregates with a porous structure and large surface area in aqueous solutions. These aggregates can be loaded with flavonoids through weak intermolecular interactions, such as hydrogen bonding, thereby improving their gastrointestinal stability, solubility, permeability and absorption in vivo. Conclusion We discovered the self-assembly properties of APS and its potential as carriers. Compared with introducing external excipients, the utilization of natural polysaccharides in plants as carriers may have a unique advantage in enhancing dissolution, permeation and absorption.
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Affiliation(s)
- Bing Yang
- School of Traditional Chinese Pharmacy, State Key Laboratory of Natural Medicines, China Pharmaceutical University, Nanjing, 211198, People’s Republic of China
| | - Xiaochun Wu
- School of Traditional Chinese Pharmacy, State Key Laboratory of Natural Medicines, China Pharmaceutical University, Nanjing, 211198, People’s Republic of China
| | - Jingqi Zeng
- School of Traditional Chinese Pharmacy, State Key Laboratory of Natural Medicines, China Pharmaceutical University, Nanjing, 211198, People’s Republic of China
| | - Jinjing Song
- School of Traditional Chinese Pharmacy, State Key Laboratory of Natural Medicines, China Pharmaceutical University, Nanjing, 211198, People’s Republic of China
| | - Tianhao Qi
- School of Traditional Chinese Pharmacy, State Key Laboratory of Natural Medicines, China Pharmaceutical University, Nanjing, 211198, People’s Republic of China
| | - Yanjun Yang
- School of Traditional Chinese Pharmacy, State Key Laboratory of Natural Medicines, China Pharmaceutical University, Nanjing, 211198, People’s Republic of China
| | - Dingkun Liu
- School of Traditional Chinese Pharmacy, State Key Laboratory of Natural Medicines, China Pharmaceutical University, Nanjing, 211198, People’s Republic of China
| | - Yulin Mo
- School of Traditional Chinese Pharmacy, State Key Laboratory of Natural Medicines, China Pharmaceutical University, Nanjing, 211198, People’s Republic of China
| | - Miao He
- College of Pharmacy, Dali University, Dali, Yunnan, People’s Republic of China
| | - Liang Feng
- School of Traditional Chinese Pharmacy, State Key Laboratory of Natural Medicines, China Pharmaceutical University, Nanjing, 211198, People’s Republic of China
| | - Xiaobin Jia
- School of Traditional Chinese Pharmacy, State Key Laboratory of Natural Medicines, China Pharmaceutical University, Nanjing, 211198, People’s Republic of China
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