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Li S, Sun J, Gao Y, Zou A, Cheng J. Enhanced fungicidal efficacy and improved interfacial properties with the co-delivery of prothioconazole and tebuconazole using polylactic acid microspheres. Pest Manag Sci 2024; 80:1831-1838. [PMID: 38031966 DOI: 10.1002/ps.7913] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/26/2023] [Revised: 11/15/2023] [Accepted: 11/30/2023] [Indexed: 12/01/2023]
Abstract
BACKGROUND Prothioconazole (PTC) is one of the leading fungicide products worldwide. However, excessive use of PTC facilitates the development of resistance. Pesticide compounding technology plays an important role in reducing pesticide resistance. Microspherization technology for the construction of pesticide dual-loaded systems has recently provided a new direction for researching novel and efficient pesticide formulations. In this study, prothioconazole-tebuconazole@polylactic acid microspheres (PTC-TBA@PLA MS) were constructed by combining these two technologies. RESULTS The final PTC-TBA@PLA MS were selected by an orthogonal method, which were uniformly spherical with smooth surface. The resultant drug loading (DL) and average particle size of PTC-TBA@PLA MS were 31.34% and 22.3 μm, respectively. A PTC-TBA@PLA MS suspending agent (SC) with a high suspension rate of 94.3% was prepared according to the suspension rate, dumping ability and stability. Compared with a commercial SC, the PTC-TBA@PLA MS SC had a larger cumulative release and better interfacial properties. Biological experiments showed that PTC-TBA@PLA MS SC had an obviously improved bactericidal effect than the commercial SC. CONCLUSION The constructed PTC-TBA@PLA MS system detailed here is expected to reduce the risk of resistance and the frequency of pesticide use while enhancing fungal control. © 2023 Society of Chemical Industry.
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Affiliation(s)
- Shujing Li
- Shanghai Key Laboratory of Chemical Biology, School of Pharmacy, East China University of Science and Technology, Shanghai, China
| | - Jing Sun
- Shanghai Key Laboratory of Chemical Biology, School of Pharmacy, East China University of Science and Technology, Shanghai, China
| | - Yue Gao
- Shanghai Key Laboratory of Chemical Biology, School of Pharmacy, East China University of Science and Technology, Shanghai, China
| | - Aihua Zou
- Shanghai Key Laboratory of Rare Earth Functional Materials, College of Chemistry and Materials Science, Shanghai Normal University, Shanghai, China
| | - Jiagao Cheng
- Shanghai Key Laboratory of Chemical Biology, School of Pharmacy, East China University of Science and Technology, Shanghai, China
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Gao Y, Xiao W, Gu C, Yu S, Li S, Zou A. Layer-by-layer assembled decomposable nanocapsules for light-responsive release of pesticide imidacloprid on Aphis craccivora Koch. Pest Manag Sci 2024. [PMID: 38353377 DOI: 10.1002/ps.8023] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/22/2023] [Revised: 02/07/2024] [Accepted: 02/12/2024] [Indexed: 03/01/2024]
Abstract
BACKGROUND Conventional pesticide formulations are often inefficient because of low biological uptake after spraying. Controlled release nanopesticides can release pesticides precisely in response to specific stimuli, thereby killing pests and pathogens using the least effective concentration. This study aims to develop nanocapsule-based photo-decomposable nanopesticides for efficient pesticide control. RESULTS The target nanopesticides were successfully fabricated using layer-by-layer assembly of the negative azobenzene-grafted hyaluronic acid (azo-HA) and positive polydimethyldiallylammonium chloride (polyDADMAC), confirmed by UV-visible, dynamic light scattering, Zeta potential and transmission electron microscopy measurements. The particle size and Zeta potential of the fabricated nanocapsules were 220 nm and +46.1 mV, respectively, and the nanocapsules were found to remain stable for up to 30 days. The optimized drug loading and encapsulation ratio of imidacloprid (IMI) in IMI/azo-HA@polyDADMAC were 21.5% and 91.3%, respectively. Cumulative release of IMI from the nanopesticides increased from ~50% to ~95% upon UV light irradiation (365 nm). The half lethal concentration (LC50 ) value of the nanopesticides toward Aphis craccivora Koch decreased from 2.22 to 0.55 mg L-1 upon UV light irradiation. CONCLUSION The trans to cis transformation of the azo group in HA decomposed IMI/azo-HA@polyDADMAC nanopesticides upon UV irradiation, thus facilitating the release of IMI, resulting in a decrease in the concentration of pesticides required for efficient pesticide control. Our work demonstrated the great potential of light-responsive nanocapsules as a controlled release nanocarrier for efficient and eco-friendly pesticide control in sustainable agriculture. © 2024 Society of Chemical Industry.
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Affiliation(s)
- Yiyun Gao
- Shanghai Key Laboratory of Functional Materials Chemistry, School of Chemistry and Molecular Engineering, East China University of Science and Technology, Shanghai, China
| | - Wenjun Xiao
- Shanghai Key Laboratory of Functional Materials Chemistry, School of Chemistry and Molecular Engineering, East China University of Science and Technology, Shanghai, China
| | - Chenhua Gu
- College of Chemistry and Materials Science, Shanghai Normal University, Shanghai, China
| | - Sheng Yu
- Shanghai Key Laboratory of Functional Materials Chemistry, School of Chemistry and Molecular Engineering, East China University of Science and Technology, Shanghai, China
| | - Shengke Li
- Macao Centre for Research and Development in Chinese Medicine, Institute of Chinese Medical Sciences, University of Macau, Macau, China
| | - Aihua Zou
- Shanghai Key Laboratory of Functional Materials Chemistry, School of Chemistry and Molecular Engineering, East China University of Science and Technology, Shanghai, China
- College of Chemistry and Materials Science, Shanghai Normal University, Shanghai, China
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Hou Y, Tu S, Zhao X, Li G, Li N, Zou A. An integrative method for evaluating the biological effects of nanoparticle-protein corona. Biochim Biophys Acta Gen Subj 2023; 1867:130300. [PMID: 36577488 DOI: 10.1016/j.bbagen.2022.130300] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2022] [Revised: 12/15/2022] [Accepted: 12/20/2022] [Indexed: 12/26/2022]
Abstract
BACKGROUND Nanoplastics in the environment can enter the human body through gastrointestinal intake, dermal contact, and pulmonary inhalation, posing a threat to human health. Protein molecules in body fluids will quickly adsorb on the surfaces of the nanoplastics, forming a protein corona, which has implications for the interaction of the nanoplastics with cells and the metabolic pathways of the nanoplastic within cells. For years, practical tools such as dynamic light scattering, transmission electron microscopy, and liquid chromatography have been developed to understand the protein corona of nanoparticles (NPs), either in vitro or in cellular or molecular level. However, an integrated approach to understand the nanoparticles-protein corona is still lacking. METHODS Using the most frequently observed environmental nanoplastics, polystyrene nanoplastics (PS), as a standard, we established an integrative structural characterization platform, a biophysical and biochemical evaluation method to investigate the effect of surface charge on protein corona composition. The cellular and molecular mechanisms were also explored through in vitro cellular experiments. RESULTS The first integrative method for characterizing biological properties of NPs-protein corona has been established. This method comprehensively covers the critical aspects to understand NPs-protein corona interactions, from structure to function. CONCLUSIONS The integrative method for nanoplastics microstructure characterization can be applied to the structural characterization of nanoparticles in nanoscale, which is of universal significance from in vitro characterization to cellular experiments and then to molecular mechanism studies. GENERAL SIGNIFICANCE This strategy has high reliability and repeatability and can be applied both in environment and nanomedicine safety assessment.
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Affiliation(s)
- Yushuang Hou
- School of Chemistry and Molecular Engineering, East China University of Science and Technology, Shanghai 200237, People's Republic of China
| | - Shuyang Tu
- National Facility for Protein Science in Shanghai, Shanghai Advanced Research Institute (Zhangjiang Laboratory), Chinese Academy of Sciences, Shanghai 201210, People's Republic of China
| | - Xiaohuan Zhao
- Analysis Center of Agrobiology and Environmental Sciences, Zhejiang University, Hangzhou 310058, People's Republic of China
| | - Guangyi Li
- National Facility for Protein Science in Shanghai, Shanghai Advanced Research Institute (Zhangjiang Laboratory), Chinese Academy of Sciences, Shanghai 201210, People's Republic of China
| | - Na Li
- National Facility for Protein Science in Shanghai, Shanghai Advanced Research Institute (Zhangjiang Laboratory), Chinese Academy of Sciences, Shanghai 201210, People's Republic of China.
| | - Aihua Zou
- School of Chemistry and Molecular Engineering, East China University of Science and Technology, Shanghai 200237, People's Republic of China; College of Chemistry and Materials Science, Shanghai Normal University, Shanghai 200234, People's Republic of China.
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Xiao W, Cao X, Yao P, Garamus VM, Chen Q, Cheng J, Zou A. Enhanced Insecticidal Effect and Interface Behavior of Nicotine Hydrochloride Solution by a Vesicle Surfactant. Molecules 2022; 27:6916. [PMID: 36296512 PMCID: PMC9608593 DOI: 10.3390/molecules27206916] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2022] [Revised: 10/09/2022] [Accepted: 10/12/2022] [Indexed: 11/17/2022] Open
Abstract
Nicotine hydrochloride (NCT) has a good control effect on hemiptera pests, but its poor interfacial behavior on the hydrophobic leaf leads to few practical applications. In this study, a vesicle solution by the eco-friendly surfactant, sodium diisooctyl succinate sulfonate (AOT), was prepared as the pesticide carrier for NCT. The physical chemical properties of NCT-loaded AOT vesicles (NCT/AOT) were investigated by techniques such as dynamic light scattering (DLS), small-angle X-ray scattering (SAXS), and cryogenic transmission electron microscopy (cryo-TEM). The results showed that the pesticide loading and encapsulation efficiency of NCT/AOT were 10.6% and 94.8%, respectively. The size of NCT/AOT vesicle was about 177 nm. SAXS and surface tension results indicated that the structure of the NCT/AOT vesicle still existed with low surface tension even after being diluted 200 times. The contact angle of NCT/AOT was always below 30°, which means it could wet the surface of the cabbage leaf well. Consequently, NCT/AOT vesicles could effectively reduce the bounce of pesticide droplets. In vitro release experiments showed that NCT/AOT vesicles had sustained release properties; 60% of NCT in NCT/AOT released after 24 h, and 80% after 48 h. Insecticidal activity assays against aphids revealed that AOT vesicles exhibited insecticidal activity and could have a synergistic insecticidal effect with NCT after the loading of NCT. Thus, the NCT/AOT vesicles significantly improved the insecticidal efficiency of NCT, which has potential application in agricultural production activities.
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Affiliation(s)
- Wenjun Xiao
- School of Chemistry and Molecular Engineering, East China University of Science and Technology, Shanghai 200237, China
| | - Xiufang Cao
- College of Science, Huazhong Agricultural University, Wuhan 430070, China
| | - Pengji Yao
- School of Chemistry and Molecular Engineering, East China University of Science and Technology, Shanghai 200237, China
| | - Vasil M. Garamus
- Department of Power-Based Materials Development, Institute of Metallic Biomaterials, Helmholtz-Zentrum Hereon, Max-Planck-Straße 1, 21502 Geesthacht, Germany
| | - Qibin Chen
- School of Chemistry and Molecular Engineering, East China University of Science and Technology, Shanghai 200237, China
| | - Jiagao Cheng
- Shanghai Key Laboratory of Chemical Biology, School of Pharmacy, East China University of Science and Technology, Shanghai 200237, China
| | - Aihua Zou
- School of Chemistry and Molecular Engineering, East China University of Science and Technology, Shanghai 200237, China
- Shanghai Key Laboratory of Rare Earth Functional Materials, College of Chemistry and Materials Science, Shanghai Normal University, Shanghai 200234, China
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Sun Q, Gui A, Zou A, Yan Y, Qiu S, Zhu S, Liu W, Zuo J, Zhang Q, Yang L. Mitochondria-specific peptide amphiphiles induce mitochondrial dysfunction and peripheral T-cell lymphomas (PTCL) damage. Ann Transl Med 2022; 10:570. [PMID: 35722364 PMCID: PMC9201132 DOI: 10.21037/atm-22-2233] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/29/2022] [Accepted: 05/17/2022] [Indexed: 11/06/2022]
Abstract
Background Methods Results Conclusions
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Affiliation(s)
- Qi Sun
- Department of Cellular and Genetic Medicine, School of Basic Medical Sciences, Fudan University, Shanghai, China
| | - Ailing Gui
- Department of Cellular and Genetic Medicine, School of Basic Medical Sciences, Fudan University, Shanghai, China
| | - Aihua Zou
- College of Chemistry and Materials Science, Shanghai Normal University, Shanghai, China
| | - Yichen Yan
- Department of Cellular and Genetic Medicine, School of Basic Medical Sciences, Fudan University, Shanghai, China
| | - Shi Qiu
- Department of Cellular and Genetic Medicine, School of Basic Medical Sciences, Fudan University, Shanghai, China
| | - Shun Zhu
- Department of Cellular and Genetic Medicine, School of Basic Medical Sciences, Fudan University, Shanghai, China
| | - Wen Liu
- Department of Cellular and Genetic Medicine, School of Basic Medical Sciences, Fudan University, Shanghai, China
| | - Ji Zuo
- Department of Cellular and Genetic Medicine, School of Basic Medical Sciences, Fudan University, Shanghai, China
| | - Qunling Zhang
- Department of Lymphoma, Fudan University Shanghai Cancer Center, Shanghai, China
- Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, China
| | - Ling Yang
- Department of Cellular and Genetic Medicine, School of Basic Medical Sciences, Fudan University, Shanghai, China
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Zhang X, Angelova A, Sun W, Zhang F, Li N, Zou A. A Lipidated Peptide with Mitochondrial Membrane Localization in Human A549 Lung Cells: From Enhanced Cell-Penetrating Properties to Biological Activity Mechanism. ACS Appl Bio Mater 2021; 4:8277-8290. [PMID: 35005910 DOI: 10.1021/acsabm.1c00815] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Here, a lipidated peptide Pal-pHK-pKV with self-assembly properties and the ability to provoke the disruption of the mitochondrial voltage-dependent anion channel-1 protein (VDAC1)-hexokinase-II (HK-II) complex is reported. The effects of the peptide pHK (N-terminal 15-amino acid fragment of HK-II that specifically binds VDAC1) are compared to those of a designed biomimetic amphiphilic pHK-pKV conjugate (pHK coupled with a cell-penetrating peptide pKV) and Pal-pHK-pKV (a lipidated conjugate modified with a hydrophobic palmitic (Pal) alkyl chain). The Pal-pHK-pKV exhibits a stronger interaction with the membrane as compared to pHK-pKV, which is demonstrated by the Langmuir-Blodgett technique and two-photon excitation microscopy. The amphiphilic peptide derivatives are cytotoxic to the A549 cells, but Pal-pHK-pKV is more cytotoxic. The inhibitory effects of the pHK derivatives on the A549 cells growth are investigated through induced apoptosis pathway, depolarized mitochondrial membrane potential, inhibited glycolysis, and activated caspase. The results of the immunofluorescence evidence the specific mitochondrial targeting by those derivatives.
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Affiliation(s)
- Xinlei Zhang
- Shanghai Key Laboratory of Functional Materials Chemistry, School of Chemistry and Molecular Engineering, East China University of Science and Technology, Shanghai 200237, People's Republic of China
| | - Angelina Angelova
- Université Paris-Saclay, CNRS, Institut Galien Paris-Saclay UMR8612, Châtenay-Malabry F-92296, France
| | - Wanfeng Sun
- Shanghai Key Laboratory of Functional Materials Chemistry, School of Chemistry and Molecular Engineering, East China University of Science and Technology, Shanghai 200237, People's Republic of China
| | - Fan Zhang
- Shanghai Key Laboratory of Functional Materials Chemistry, School of Chemistry and Molecular Engineering, East China University of Science and Technology, Shanghai 200237, People's Republic of China
| | - Na Li
- National Facility for Protein Science in Shanghai Zhangjiang Laboratory, Shanghai Advanced Research Institute, CAS, No.333, Haike Road, Shanghai 20124, People's Republic of China
| | - Aihua Zou
- Shanghai Key Laboratory of Functional Materials Chemistry, School of Chemistry and Molecular Engineering, East China University of Science and Technology, Shanghai 200237, People's Republic of China.,College of Chemistry and Materials Science, Shanghai Normal University, Shanghai 200234, People's Republic of China
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7
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Zhang F, Angelova A, Garamus VM, Angelov B, Tu S, Kong L, Zhang X, Li N, Zou A. Mitochondrial Voltage-Dependent Anion Channel 1-Hexokinase-II Complex-Targeted Strategy for Melanoma Inhibition Using Designed Multiblock Peptide Amphiphiles. ACS Appl Mater Interfaces 2021; 13:35281-35293. [PMID: 34309373 DOI: 10.1021/acsami.1c04385] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Targeted therapies of melanoma are of urgent need considering the resistance of this aggressive type of cancer to chemotherapeutics. The voltage-dependent anion channel 1 (VDAC1)-hexokinase-II (HK-II) complex is an emerging target for novel anticancer therapies based on induced mitochondria-mediated apoptosis. The low cell membrane permeability of the anticancer 12-mer peptide N-Ter (RDVFTKGYGFGL) derived from the N-terminal fragment of the VDAC1 protein impedes the intracellular targeting. Here, novel multiblock VDAC1-derived cationic amphiphilic peptides (referred to as Pal-N-Ter-TAT, pFL-N-Ter-TAT, and Pal-pFL-N-Ter-TAT) are designed with a self-assembly propensity and cell-penetrating properties. The created multiblock amphiphilic peptides of partial α-helical conformations form nanoparticles of ellipsoid-like shapes and are characterized by enhanced cellular uptake. The amphiphilic peptides can target mitochondria and dissociate the VDAC1-HK-II complex at the outer mitochondrial membrane, which result in mitochondria-mediated apoptosis. The latter is associated with decrease of the mitochondrial membrane potential, cytochrome c release, and changes of the expression levels of the apoptotic proteins in A375 melanoma cells. Importantly, the mitochondrial VDAC1-derived amphiphilic peptides have a comparable IC50 value for melanoma cells to a small-molecule drug, sorafenib, which has been previously used in clinical trials for melanoma. These results demonstrate the potential of the designed peptide constructs for efficient melanoma inhibition.
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Affiliation(s)
- Fan Zhang
- Shanghai Key Laboratory of Functional Materials Chemistry, School of Chemistry and Molecular Engineering, East China University of Science and Technology, Shanghai 200237, P. R. China
| | - Angelina Angelova
- Université Paris-Saclay, CNRS, Institute Galien Paris-Saclay UMR8612, Châtenay-Malabry F-92290, France
| | | | - Borislav Angelov
- Institute of Physics, ELI Beamlines, Academy of Sciences of the Czech Republic, Na Slovance 2, Prague CZ-18221, Czech Republic
| | - Shuyang Tu
- National Facility for Protein Science in Shanghai, Shanghai Advanced Research Institute (Zhangjiang Laboratory), Chinese Academy of Sciences, Shanghai 201210, China
| | - Liangliang Kong
- National Facility for Protein Science in Shanghai, Shanghai Advanced Research Institute (Zhangjiang Laboratory), Chinese Academy of Sciences, Shanghai 201210, China
| | - Xinlei Zhang
- Shanghai Key Laboratory of Functional Materials Chemistry, School of Chemistry and Molecular Engineering, East China University of Science and Technology, Shanghai 200237, P. R. China
| | - Na Li
- National Facility for Protein Science in Shanghai, Shanghai Advanced Research Institute (Zhangjiang Laboratory), Chinese Academy of Sciences, Shanghai 201210, China
| | - Aihua Zou
- Shanghai Key Laboratory of Functional Materials Chemistry, School of Chemistry and Molecular Engineering, East China University of Science and Technology, Shanghai 200237, P. R. China
- College of Chemistry and Materials Science, Shanghai Normal University, Shanghai 200234, P. R. China
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Yao P, Zou A, Tian Z, Meng W, Fang X, Wu T, Cheng J. Construction and characterization of a temperature-responsive nanocarrier for imidacloprid based on mesoporous silica nanoparticles. Colloids Surf B Biointerfaces 2020; 198:111464. [PMID: 33296822 DOI: 10.1016/j.colsurfb.2020.111464] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2020] [Revised: 10/31/2020] [Accepted: 11/05/2020] [Indexed: 12/20/2022]
Abstract
Nanopesticides have great potential applications due to their stability enhancement, sustained release and target affinity. In this work, a temperature-responsive nanocarrier for imidacloprid (IMI) was constructed using mesoporous silica nanoparticles (MSNs) as the core and paraffin wax (PW) as the outer layer. IMI was loaded into MSNs by screening the drug/carrier mass ratios to obtain the optimized IMI/MSNs formulation with a high drug loading (27.47 %). IMI/MSNs were functionalized with octadecyltrimethoxysilane (C18TMS) and further coated with a temperature-responsive trigger (PW) through hydrophobic interactions. Thus, a temperature-responsive nanocarrier for IMI (PW/IMI/MSNs) was constructed. Fourier transforms infrared (FT-IR), thermogravimetric analysis (TGA) and N2 adsorption-desorption isotherm measurements confirmed the successful loading of IMI into MSNs and the coating of PW on the surface of the IMI/MSNs. X-ray diffraction (XRD) and transmission electron microscopy (TEM) analyses indicated that PW/IMI/MSNs with diameters approximately 100 nm had an ordered hexagonal mesoporous structure with a surface coating of approximately 6 nm. In addition, an in vitro release experiment showed that PW/IMI/MSNs displayed a temperature-responsive sustained release property. Correspondingly, the bioactivity assay of the PW/IMI/MSNs showed that the insecticidal activity greatly increased with temperature. This formulation is expected to have potential applications in some high-temperature areas, such as Turpan in Xinjiang Province, for improving the utilization efficiency of IMI.
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Affiliation(s)
- Pengji Yao
- State Key Laboratory of Bioreactor Engineering and Institute of Applied Chemistry, Shanghai Key Laboratory of Functional Materials Chemistry, School of Chemistry and Molecular Engineering, East China University of Science and Technology, Shanghai, 200237, PR China
| | - Aihua Zou
- College of Chemistry and Materials Science, Shanghai Normal University, Shanghai 200234, PR China.
| | - Zhenfen Tian
- State Key Laboratory of Bioreactor Engineering and Institute of Applied Chemistry, Shanghai Key Laboratory of Functional Materials Chemistry, School of Chemistry and Molecular Engineering, East China University of Science and Technology, Shanghai, 200237, PR China
| | - Wenyan Meng
- State Key Laboratory of Bioreactor Engineering and Institute of Applied Chemistry, Shanghai Key Laboratory of Functional Materials Chemistry, School of Chemistry and Molecular Engineering, East China University of Science and Technology, Shanghai, 200237, PR China
| | - Xialun Fang
- State Key Laboratory of Bioreactor Engineering and Institute of Applied Chemistry, Shanghai Key Laboratory of Functional Materials Chemistry, School of Chemistry and Molecular Engineering, East China University of Science and Technology, Shanghai, 200237, PR China
| | - Tong Wu
- Shanghai Key Laboratory of Chemical Biology, School of Pharmacy, East China University of Science and Technology, Shanghai 200237, PR China
| | - Jiagao Cheng
- Shanghai Key Laboratory of Chemical Biology, School of Pharmacy, East China University of Science and Technology, Shanghai 200237, PR China.
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Wu T, Fang X, Yang Y, Meng W, Yao P, Liu Q, Zhang B, Liu F, Zou A, Cheng J. Eco-friendly Water-Based λ-Cyhalothrin Polydopamine Microcapsule Suspension with High Adhesion on Leaf for Reducing Pesticides Loss. J Agric Food Chem 2020; 68:12549-12557. [PMID: 33112140 DOI: 10.1021/acs.jafc.0c02245] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/12/2023]
Abstract
Recently, innovations of nano/microcarrier formulations have been focused on improving application efficiencies and retention time. In this study, a water-based 2.5% λ-cyhalothrin (LC) microcapsule suspension (CS) was developed by orthogonal test with biodegradable and adhesive polydopamine (PDA) microcapsules (MCs) as carriers. The obtained LC-PDA CS had good suspension properties, flow behavior, storage stability, and rheological properties. LC-PDA CS had higher retention, wettability, and decreased rainwater washing out on the leaves than commercial CS. LC-PDA CS displayed higher insecticidal activity against Lipaphis erysimi compared to commercial CS. LC-PDA CS reduced the toxicity of LC to the aquatic organism Danio rerio compared to LC. The above results demonstrated that LC-PDA CS would be eco-friendly water-based pesticides carrier system for prolonging the retention time on target leaf and reducing toxicity to aquatic organisms.
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Affiliation(s)
- Tong Wu
- Shanghai Key Laboratory of Chemical Biology, School of Pharmacy, East China University of Science and Technology, Shanghai 200237, China
| | - Xialun Fang
- Shanghai Key Laboratory of Functional Materials Chemistry, State Key Laboratory of Bioreactor Engineering and Molecular Engineering, East China University of Science and Technology, Shanghai 200237, China
| | - Ying Yang
- Shanghai Key Laboratory of Functional Materials Chemistry, State Key Laboratory of Bioreactor Engineering and Molecular Engineering, East China University of Science and Technology, Shanghai 200237, China
| | - Wenyan Meng
- Shanghai Key Laboratory of Functional Materials Chemistry, State Key Laboratory of Bioreactor Engineering and Molecular Engineering, East China University of Science and Technology, Shanghai 200237, China
| | - Pengji Yao
- Shanghai Key Laboratory of Functional Materials Chemistry, State Key Laboratory of Bioreactor Engineering and Molecular Engineering, East China University of Science and Technology, Shanghai 200237, China
| | - Qin Liu
- State Key Laboratory of Bioreactor Engineering, East China University of Science and Technology, Shanghai 200237, China
| | - Bo Zhang
- The Key Laboratory of Resource Chemistry of Ministry of Education, Shanghai Engineering Research Center of Green Energy Chemical Engineering, College of Chemistry and Materials Science, Shanghai Normal University, Shanghai 200234, P. R. China
| | - Feng Liu
- Shandong Provincial Key Laboratory for Biology of Vegetable Diseases and Insect Pests, College of Plant Protection, Shandong Agricultural University, Tai'an 271001, China
| | - Aihua Zou
- Shanghai Key Laboratory of Functional Materials Chemistry, State Key Laboratory of Bioreactor Engineering and Molecular Engineering, East China University of Science and Technology, Shanghai 200237, China
| | - Jiagao Cheng
- Shanghai Key Laboratory of Chemical Biology, School of Pharmacy, East China University of Science and Technology, Shanghai 200237, China
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Meng W, Tian Z, Yao P, Fang X, Wu T, Cheng J, Zou A. Preparation of a novel sustained-release system for pyrethroids by using metal-organic frameworks (MOFs) nanoparticle. Colloids Surf A Physicochem Eng Asp 2020. [DOI: 10.1016/j.colsurfa.2020.125266] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
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11
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Liu D, Angelova A, Liu J, Garamus VM, Angelov B, Zhang X, Li Y, Feger G, Li N, Zou A. Self-assembly of mitochondria-specific peptide amphiphiles amplifying lung cancer cell death through targeting the VDAC1-hexokinase-II complex. J Mater Chem B 2020; 7:4706-4716. [PMID: 31364685 DOI: 10.1039/c9tb00629j] [Citation(s) in RCA: 45] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
Mitochondria-targeting peptides represent an emergent tool for cancer inhibition. Here supramolecular assemblies of novel amphiphilic cell-penetrating peptides for targeting cancer cell mitochondria are reported. The employed strategy aims at amplifying the apoptotic stimuli by weakening the mitochondrial VDAC1 (voltage-dependent anion channel-1)-hexokinase-II (HK-II) interaction. Peptide engineering is performed with the N-terminus of the HK-II protein, which binds to VDAC1. First, a designed positively charged segment (pKV) is anchored to the specific 15 amino acid sequence (MIASHLLAYFFTELN) to yield a cell-penetrating peptide (pHK-pKV). Second, a lipid chain (Pal) is conjugated to the N-terminus of pHK-pKV in order to enhance the intracellular delivery of the HK-II scaffold. The self-assembly properties of these two synthetic peptides are investigated by synchrotron small-angle X-ray scattering (BioSAXS) and cryogenic transmission electron (cryo-TEM) imaging, which evidence the formation of nanoassemblies of ellipsoid-like shapes. Circular dichroism (CD) spectroscopy demonstrates the induction of partial α-helical structures in the amphiphilic peptides. Confocal microscopy reveals the specific mitochondrial location of Pal-pHK-pKV assemblies in human non-small cell lung cancer (NSCLC) A549 cells. The cytotoxicity and apoptotic studies indicate the enhanced bioactivity of Pal-pHK-pKV self-assembled reservoirs, which cause massive A549 cell death with regard to pHK-pKV. Of significance, Pal-pHK-pKV treatment of non-cancerous NCM460 cells resulted in substantially lower cytotoxicity. The results demonstrate the potential of self-assembled lipo-peptide (HK-II-derived) conjugates as a promising strategy in cancer therapy.
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Affiliation(s)
- Dan Liu
- Shanghai Key Laboratory of Functional Materials Chemistry, State Key Laboratory of Bioreactor Engineering and Institute of Applied Chemistry, School of Chemistry and Molecular Engineering, East China University of Science and Technology, Shanghai 200237, P. R. China.
| | - Angelina Angelova
- Institut Galien Paris-Sud, CNRS UMR 8612, LabEx LERMIT, Univ. Paris-Sud, Université Paris-Saclay, F-92296 Châtenay-Malabry, France
| | - Jianwen Liu
- State Key Laboratory of Bioreactor Engineering & Shanghai Key Laboratory of New Drug Design, School of Pharmacy, East China University of Science and Technology, Shanghai 200237, P. R. China
| | - Vasil M Garamus
- Helmholtz-Zentrum Geesthacht, Centre for Materials and Coastal Research, D-21502 Geesthacht, Germany
| | - Borislav Angelov
- Institute of Physics, ELI Beamlines, Academy of Sciences of the Czech Republic, Na Slovance 2, CZ-18221 Prague, Czech Republic
| | - Xinlei Zhang
- Shanghai Key Laboratory of Functional Materials Chemistry, State Key Laboratory of Bioreactor Engineering and Institute of Applied Chemistry, School of Chemistry and Molecular Engineering, East China University of Science and Technology, Shanghai 200237, P. R. China.
| | - Yawen Li
- Shanghai Key Laboratory of Functional Materials Chemistry, State Key Laboratory of Bioreactor Engineering and Institute of Applied Chemistry, School of Chemistry and Molecular Engineering, East China University of Science and Technology, Shanghai 200237, P. R. China.
| | - Guillaume Feger
- Institut Galien Paris-Sud, CNRS UMR 8612, LabEx LERMIT, Univ. Paris-Sud, Université Paris-Saclay, F-92296 Châtenay-Malabry, France
| | - Na Li
- National Center for Protein Science Shanghai and Shanghai Institute of Biochemistry and Cell Biology, Shanghai 200120, P. R. China.
| | - Aihua Zou
- Shanghai Key Laboratory of Functional Materials Chemistry, State Key Laboratory of Bioreactor Engineering and Institute of Applied Chemistry, School of Chemistry and Molecular Engineering, East China University of Science and Technology, Shanghai 200237, P. R. China.
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Hu F, Angelov B, Li S, Li N, Lin X, Zou A. Single‐Molecule Study of Peptides with the Same Amino Acid Composition but Different Sequences by Using an Aerolysin Nanopore. Chembiochem 2020; 21:2467-2473. [DOI: 10.1002/cbic.202000119] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2020] [Revised: 04/09/2020] [Indexed: 01/04/2023]
Affiliation(s)
- Fangzhou Hu
- Shanghai Key Laboratory of Functional Materials ChemistryState Key Laboratory of Bioreactor Engineering and Institute of Applied ChemistrySchool of Chemistry and Molecular EngineeringEast China University of Science and Technology Shanghai 200237 P. R. China
| | - Borislav Angelov
- Institute of Physics, ELI BeamlinesAcademy of Sciences of the Czech Republic Na Slovance 2 18221 Prague Czech Republic
| | - Shuang Li
- Shanghai Key Laboratory of Functional Materials ChemistryState Key Laboratory of Bioreactor Engineering and Institute of Applied ChemistrySchool of Chemistry and Molecular EngineeringEast China University of Science and Technology Shanghai 200237 P. R. China
| | - Na Li
- National Center for Protein Science in ShanghaiZhangjiang LabShanghai Advanced Research Institute, CAS Shanghai 200120 P. R. China
| | - Xubo Lin
- Institute of Single Cell EngineeringBeijing Advanced Innovation Center for Biomedical EngineeringBeihang University Beijing 100191 P. R. China
| | - Aihua Zou
- Shanghai Key Laboratory of Functional Materials ChemistryState Key Laboratory of Bioreactor Engineering and Institute of Applied ChemistrySchool of Chemistry and Molecular EngineeringEast China University of Science and Technology Shanghai 200237 P. R. China
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Li Y, Angelova A, Hu F, Garamus VM, Peng C, Li N, Liu J, Liu D, Zou A. pH Responsiveness of Hexosomes and Cubosomes for Combined Delivery of Brucea javanica Oil and Doxorubicin. Langmuir 2019; 35:14532-14542. [PMID: 31635451 DOI: 10.1021/acs.langmuir.9b02257] [Citation(s) in RCA: 65] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
We report pH-responsive liquid crystalline lipid nanoparticles, which are dual-loaded by Brucea javanica oil (BJO) and doxorubicin hydrochloride (DOX) and display a pH-induced inverted hexagonal (pH = 7.4) to cubic (pH = 6.8) to emulsified microemulsion (pH = 5.3) phase transition with a therapeutic application in cancer inhibition. BJO is a traditional herbal medicine that strongly inhibits the proliferation and metastasis of various cancers. Doxorubicin is an antitumor drug, which prevents DNA replication and hampers protein synthesis through intercalation between the base pairs of the DNA helices. Its dose-dependent cardiotoxicity imposes the need for safe delivery carriers. Here, pH-induced changes in the structural and interfacial properties of designed multicomponent drug delivery (monoolein-oleic acid-BJO-DOX) systems are determined by synchrotron small-angle X-ray scattering and the Langmuir film balance technique. The nanocarrier assemblies display good physical stability in the studied pH range and adequate particle sizes and ζ-potentials. Their interaction with model lipid membrane interfaces is enhanced under acidic pH conditions, which mimic the microenvironment around tumor cells. In vitro cytotoxicity and apoptosis studies with BJO-DOX dual-loaded pH-switchable liquid crystalline nanoparticles are performed on the human breast cancer Michigan Cancer Foundation-7 (MCF-7) cell line and MCF-7 cells with doxorubicin resistance (MCF-7/DOX), respectively. The obtained pH-sensitive nanomedicines exhibit enhanced antitumor efficacy. The performed preliminary studies suggest a potential reversal of the resistance of the MCF-7/DOX cells to DOX. These results highlight the necessity for further understanding the link between the established pH-dependent drug release profiles of the nanocarriers and the role of their pH-switchable inverted hexagonal, bicontinuous cubic, and emulsified microemulsion inner organizations for therapeutic outcomes.
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Affiliation(s)
- Yawen Li
- Shanghai Key Laboratory of Functional Materials Chemistry, State Key Laboratory of Bioreactor Engineering and Institute of Applied Chemistry, School of Chemistry and Molecular Engineering , East China University of Science and Technology , Shanghai 200237 , P. R. China
| | - Angelina Angelova
- Institut Galien Paris-Sud , CNRS UMR 8612, Univ. Paris-Sud, Université Paris-Saclay, LabEx LERMIT , F-92296 Châtenay-Malabry cedex, France
| | - Fangzhou Hu
- Shanghai Key Laboratory of Functional Materials Chemistry, State Key Laboratory of Bioreactor Engineering and Institute of Applied Chemistry, School of Chemistry and Molecular Engineering , East China University of Science and Technology , Shanghai 200237 , P. R. China
| | - Vasil M Garamus
- Helmholtz-Zentrum Geesthacht, Centre for Materials and Coastal Research , D-21502 Geesthacht , Germany
| | - Changjun Peng
- Shanghai Key Laboratory of Functional Materials Chemistry, State Key Laboratory of Bioreactor Engineering and Institute of Applied Chemistry, School of Chemistry and Molecular Engineering , East China University of Science and Technology , Shanghai 200237 , P. R. China
| | - Na Li
- National Center for Protein Science Shanghai and Shanghai Institute of Biochemistry and Cell Biology , Shanghai 200237 , P. R. China
| | - Jianwen Liu
- Shanghai Key Laboratory of Functional Materials Chemistry, State Key Laboratory of Bioreactor Engineering and Institute of Applied Chemistry, School of Chemistry and Molecular Engineering , East China University of Science and Technology , Shanghai 200237 , P. R. China
| | - Dan Liu
- Shanghai Key Laboratory of Functional Materials Chemistry, State Key Laboratory of Bioreactor Engineering and Institute of Applied Chemistry, School of Chemistry and Molecular Engineering , East China University of Science and Technology , Shanghai 200237 , P. R. China
| | - Aihua Zou
- Shanghai Key Laboratory of Functional Materials Chemistry, State Key Laboratory of Bioreactor Engineering and Institute of Applied Chemistry, School of Chemistry and Molecular Engineering , East China University of Science and Technology , Shanghai 200237 , P. R. China
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Li X, Garamus VM, Li N, Zhe Z, Willumeit-Römer R, Zou A. Loading Psoralen into liposomes to enhance its stimulatory effect on the proliferation and differentiation of mouse calvarias osteoblasts. J DISPER SCI TECHNOL 2019. [DOI: 10.1080/01932691.2018.1462196] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Affiliation(s)
- Xiaoran Li
- Shanghai Key Laboratory of Functional Materials Chemistry, State Key Laboratory of Bioreactor Engineering, School of Chemistry and Molecular Engineering, East China University of Science and Technology, Shanghai, P.R. China
| | - Vasil M. Garamus
- Helmholtz-Zentrum Geesthacht: Centre for Materials and Coastal Research, Institute of Materials Research, Geesthacht, Germany
| | - Na Li
- National Center for Protein Science Shanghai and Shanghai Institute of Biochemistry and Cell Biology, Shanghai, P. R. China
| | - Zhe Zhe
- Shanghai municipal Hospital of Traditional Chinese Medicine, Shanghai University of Traditional Chinese Medicine, Shanghai, P.R. China
| | - Regine Willumeit-Römer
- Helmholtz-Zentrum Geesthacht: Centre for Materials and Coastal Research, Institute of Materials Research, Geesthacht, Germany
| | - Aihua Zou
- Shanghai Key Laboratory of Functional Materials Chemistry, State Key Laboratory of Bioreactor Engineering, School of Chemistry and Molecular Engineering, East China University of Science and Technology, Shanghai, P.R. China
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15
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Zhang Y, Tian Z, Zhao X, Li N, Garamus VM, Yin P, Zou A. Dual-modified bufalin loaded liposomes for enhanced tumor targeting. Colloids Surf A Physicochem Eng Asp 2019. [DOI: 10.1016/j.colsurfa.2019.03.060] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
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Zou A, Liu R, Wu X. Long non-coding RNA MALAT1 is up-regulated in ovarian cancer tissue and promotes SK-OV-3 cell proliferation and invasion. Neoplasma 2019; 63:865-872. [PMID: 27565324 DOI: 10.4149/neo_2016_605] [Citation(s) in RCA: 38] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Ovarian cancer is a gynecological malignancy worldwide. Long non-coding RNAs (lncRNAs) research is an emerging area in cancer studies, but little is known about lncRNA metastasis associated lung adenocarcinoma transcript 1 (MALAT1) in ovarian cancer. This study aims to investigate expression and roles of MALAT1 in ovarian cancer. MALAT1 level was detected in 20 ovarian cancer patients. MALAT1 expression was promoted by transforming growth factor β1 (TGFB1) treatment and inhibited by siRNA transfection in human ovarian cancer cell line SK-OV-3, after which changes in cell viability, proliferation, migration and invasion were analyzed by MTT, colony formation and Transwell assays. Protein levels of mitogen-activated protein kinase factors, including MAPK kinase 1 (MEK1), extracellular signal-regulated kinase (ERK1), p38 and c-Jun N-terminal kinase 1 (JNK1), were detected by western blot. Results showed that MALAT1 was significantly up-regulated in ovarian cancer tissues compared to adjacent normal tissues (P < 0.001), and its expression was correlated to tumor size (r2 = 0.7770, P < 0.0001) and metastasis. TGFB1 and siRNA successfully altered MALAT1 levels in SK-OV-3 cells. Knockdown of MALAT1 suppressed SK-OV-3 cell viability, proliferation, migration and invasion (P < 0.05), and inhibited phosphorylation of MEK1, ERK1, p38 and JNK1, which suggested that MALAT1 promoted ovarian cancer cell proliferation, migration and invasion, and that MAPK pathways might be one of the regulatory mechanisms of MALAT1. This study reveals that MALAT1 is a potential biomarker for tumor growth and metastasis, as well as a promising therapeutic target in ovarian cancer, facilitating further ovarian cancer research.
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Li Y, Angelova A, Liu J, Garamus VM, Li N, Drechsler M, Gong Y, Zou A. In situ phase transition of microemulsions for parenteral injection yielding lyotropic liquid crystalline carriers of the antitumor drug bufalin. Colloids Surf B Biointerfaces 2018; 173:217-225. [PMID: 30296646 DOI: 10.1016/j.colsurfb.2018.09.023] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2018] [Revised: 08/11/2018] [Accepted: 09/10/2018] [Indexed: 10/28/2022]
Abstract
In this work, we used the small angle X-ray scattering (SAXS) method for controlled preparation of in situ forming sustained-release carriers for the antitumor drug bufalin (BUF), which has very poor solubility and a considerable cardiotoxicity in a non-encapsulated state. To that aim, we exploited the pseudo-ternary phase diagram of an oil(O)/surfactant(S)/water(W) system containing medium chain capric/caprylic triglycerides (MCT) and a co-surfactant blend of Macrogol (15)-hydroxystearate (Solutol HS 15) and sorbitan monooleate (Span 80). Two compositions with different oil contents (sample B and C) were selected from the microemulsion region of the phase diagram in order to study the effect of the aqueous environment on their structural behavior. A phase transition from a microemulsion (ME) to a liquid crystalline phase (LC) was established by SAXS upon progressive dilution. The drug bufalin (BUF) was encapsulated in the microemulsions with low viscosity, whereas the release of the drug occurred from the in situ generated lamellar liquid crystalline structures. The formulations were characterized by SAXS, dynamic light scattering (DLS), cryogenic transmission electron microscopy (Cryo-TEM), rheology, drug loading and encapsulation efficiency, and in vitro release profiles. A correlation was suggested between the structures of the in situ phase-transition formed LCME formulations, the differences in their viscosities and drug release profiles. The performed cytotoxicity, cell apoptosis and pharmacokinetic experiments showed an enhanced bioavailability of BUF after encapsulation. These results suggest potential clinical applications for the obtained safe in situ phase-transition sustained-release formulations of BUF.
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Affiliation(s)
- Yawen Li
- Shanghai Key Laboratory of Functional Materials Chemistry, State Key Laboratory of Bioreactor Engineering and Institute of Applied Chemistry, School of Chemistry and Molecular Engineering, East China University of Science and Technology, Shanghai, 200237, PR China
| | - Angelina Angelova
- Institut Galien Paris-Sud, CNRS UMR 8612, Univ. Paris-Sud, Université Paris-Saclay, LabEx LERMIT, F-92296, Châtenay-Malabry cedex, France
| | - Jianwen Liu
- Shanghai Key Laboratory of Functional Materials Chemistry, State Key Laboratory of Bioreactor Engineering and Institute of Applied Chemistry, School of Chemistry and Molecular Engineering, East China University of Science and Technology, Shanghai, 200237, PR China
| | - Vasil M Garamus
- Helmholtz-Zentrum Geesthacht, Centre for Materials and Coastal Research, D-21502, Geesthacht, Germany
| | - Na Li
- National Center for Protein Science Shanghai and Shanghai Institute of Biochemistry and Cell Biology, Shanghai, 200237, PR China
| | - Markus Drechsler
- Keylab "Electron and Optical Microscopy", Bavarian Polymerinstitute (BPI), University of Bayreuth, D-95440, Bayreuth, Germany
| | - Yabin Gong
- Yueyang Hospital of Integrated Traditional Chinese and Western Medicine, Shanghai, 200437, PR China
| | - Aihua Zou
- Shanghai Key Laboratory of Functional Materials Chemistry, State Key Laboratory of Bioreactor Engineering and Institute of Applied Chemistry, School of Chemistry and Molecular Engineering, East China University of Science and Technology, Shanghai, 200237, PR China.
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Zou A, Yang Y, Cheng J, Garamus VM, Li N. Construction and Characterization of a Novel Sustained-Release Delivery System for Hydrophobic Pesticides Using Biodegradable Polydopamine-Based Microcapsules. J Agric Food Chem 2018; 66:6262-6268. [PMID: 29847115 DOI: 10.1021/acs.jafc.8b00877] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Microcapsule formulations have been highly desirable and widely developed for effective utilization of pesticides and environmental pollution reduction. However, commercial and traditional microcapsule formulations of λ-cyhalothrin (LC) were prepared by complicated synthesis procedures and thereby specific organic solvents were needed. In this work, LC was encapsulated into versatile, robust, and biodegradable polydopamine (PDA) microcapsules by self-polymerization of dopamine. LC-loaded PDA microcapsules were characterized by transmission electron microscopy (TEM), small-angle X-ray scattering (SAXS), and thermogravimetric analysis measurements (TGA). LC-loaded PDA microcapsules have uniform morphology with nanoscale, decent LC loading content (>50.0% w/w), and good physicochemical stability and sustained release properties. The bioassay against housefly ( Musca domestica) showed that the bioactivity and long-term efficiency of LC-loaded PDA microcapsules was superior to that of the commercial formulation. All of these results demonstrated that LC-loaded PDA microcapsules could be applied as a commercial LC microcapsule formulation with fewer environmental side effects and higher effective delivery.
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Affiliation(s)
- Aihua Zou
- State Key Laboratory of Bioreactor Engineering and Institute of Applied Chemistry, Shanghai Key Laboratory of Functional Materials Chemistry, School of Chemistry and Molecular Engineering , East China University of Science and Technology , Shanghai 200237 , People's Republic of China
| | - Ying Yang
- State Key Laboratory of Bioreactor Engineering and Institute of Applied Chemistry, Shanghai Key Laboratory of Functional Materials Chemistry, School of Chemistry and Molecular Engineering , East China University of Science and Technology , Shanghai 200237 , People's Republic of China
| | - Jiagao Cheng
- School of Pharmacy , East China University of Science and Technology , Shanghai 200237 , People's Republic of China
| | - Vasil M Garamus
- Helmholtz-Zentrum Geesthacht, Centre for Materials and Coastal Research , D-21502 Geesthacht , Germany
| | - Na Li
- National Center for Protein Science Shanghai and Shanghai Institute of Biochemistry and Cell Biology , Shanghai 201210 , People's Republic of China
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Wang W, Lu ZH, Luo Y, Zou A, Yao Q, Chen X. Mesoporous Carbon Nitride Supported Pd and Pd-Ni Nanoparticles as Highly Efficient Catalyst for Catalytic Hydrolysis of NH3
BH3. ChemCatChem 2018. [DOI: 10.1002/cctc.201701989] [Citation(s) in RCA: 64] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Wei Wang
- State-Province Joint Engineering Laboratory of Zeolite Membrane Materials, Institute of Advanced Materials, College of Chemistry and Chemical Engineering; Jiangxi Normal University; Nanchang Jiangxi 330022 P.R. China
| | - Zhang-Hui Lu
- State-Province Joint Engineering Laboratory of Zeolite Membrane Materials, Institute of Advanced Materials, College of Chemistry and Chemical Engineering; Jiangxi Normal University; Nanchang Jiangxi 330022 P.R. China
| | - Yan Luo
- Department of Chemical Engineering; West Virginia University; WV 26506 USA
| | - Aihua Zou
- State-Province Joint Engineering Laboratory of Zeolite Membrane Materials, Institute of Advanced Materials, College of Chemistry and Chemical Engineering; Jiangxi Normal University; Nanchang Jiangxi 330022 P.R. China
- Key Laboratory of Jiangxi Province for, Persistant Pollutants Control and Resources Recycle; Nanchang Hangkong University; Nanchang Jiangxi 330036 P.R. China
| | - Qilu Yao
- State-Province Joint Engineering Laboratory of Zeolite Membrane Materials, Institute of Advanced Materials, College of Chemistry and Chemical Engineering; Jiangxi Normal University; Nanchang Jiangxi 330022 P.R. China
| | - Xiangshu Chen
- State-Province Joint Engineering Laboratory of Zeolite Membrane Materials, Institute of Advanced Materials, College of Chemistry and Chemical Engineering; Jiangxi Normal University; Nanchang Jiangxi 330022 P.R. China
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Yang Y, Cheng J, Garamus VM, Li N, Zou A. Preparation of an Environmentally Friendly Formulation of the Insecticide Nicotine Hydrochloride through Encapsulation in Chitosan/Tripolyphosphate Nanoparticles. J Agric Food Chem 2018; 66:1067-1074. [PMID: 29301083 DOI: 10.1021/acs.jafc.7b04147] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Insecticide nicotine hydrochloride (NCT) was formulated as nanoparticles composed of chitosan (CS) and sodium tripolyphosphate (TPP) to undermine its adverse impacts on human health and reinforce its physicochemical stability. The study investigated the preparation and characterization of chitosan/tripolyphosphate nanoparticles (CS/TPP NPs) with good encapsulation efficiency (55%), uniform morphology, and physicochemical stability (45 days) through dynamic light scattering (DLS), transmission electron microscopy (TEM), and small-angle X-ray scattering (SAXS) measurements. A bioassay against Musca domestica NCT CS/TPP NPs exhibited good bioactivity and thermal stability. The effect of the monovalent salt (NaCl) on manipulating the formation and size distribution of ionically cross-linked nanoparticles was demonstrated as well. The formulation of NCT CS/TPP NPs could be a utility candidate in public health and agriculture.
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Affiliation(s)
| | | | - Vasil M Garamus
- Helmholtz-Zentrum Geesthacht , Centre for Materials and Coastal Research, D-21502 Geesthacht, Germany
| | - Na Li
- National Center for Protein Science Shanghai, Shanghai Institute of Biochemistry and Cell Biology , Shanghai 200237, People's Republic of China
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Lv W, Zhao S, Yu H, Li N, Garamus VM, Chen Y, Yin P, Zhang R, Gong Y, Zou A. Brucea javanica oil-loaded nanostructure lipid carriers (BJO NLCs): Preparation, characterization and in vitro evaluation. Colloids Surf A Physicochem Eng Asp 2016. [DOI: 10.1016/j.colsurfa.2016.05.068] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
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Zhao S, Minh LV, Li N, Garamus VM, Handge UA, Liu J, Zhang R, Willumeit-Römer R, Zou A. Doxorubicin hydrochloride-oleic acid conjugate loaded nanostructured lipid carriers for tumor specific drug release. Colloids Surf B Biointerfaces 2016; 145:95-103. [DOI: 10.1016/j.colsurfb.2016.04.027] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2015] [Revised: 04/11/2016] [Accepted: 04/12/2016] [Indexed: 01/23/2023]
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Jin L, Garamus VM, Liu F, Xiao J, Eckerlebe H, Willumeit-Römer R, Mu B, Zou A. Interaction of a biosurfactant, Surfactin with a cationic Gemini surfactant in aqueous solution. J Colloid Interface Sci 2016; 481:201-9. [PMID: 27475707 DOI: 10.1016/j.jcis.2016.07.044] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2016] [Revised: 07/15/2016] [Accepted: 07/18/2016] [Indexed: 11/16/2022]
Abstract
The interaction between biosurfactant Surfactin and cationic Gemini surfactant ethanediyl-1,3-bis(dodecyldimethylammonium bromide) (abbreviated as 12-3-12) was investigated using turbidity, surface tension, dynamic light scattering (DLS) and small angle neutron scattering (SANS). Analysis of critical micelle concentration (CMC) values in Surfactin/12-3-12 mixture indicates that there is synergism in formation of mixed Surfactin/12-3-12 micelles. Although Surfactin and 12-3-12 are oppositely charged in phosphate buffer solution (PBS, pH7.4), there are no precipitates observed at the concentrations below the CMC of Surfactin/12-3-12 system. However, at the concentration above CMC value, the Surfactin/12-3-12 mixture is severely turbid with high 12-3-12 content. DLS and SANS measurements follow the size and shape changes of mixed Surfactin/12-3-12 aggregates from small spherical micelles via elongated aggregates to large bulk complexes with increasing fraction of Gemini surfactant.
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Affiliation(s)
- Lei Jin
- Shanghai Key Laboratory of Functional Materials Chemistry and State Key Laboratory of Bioreactor Engineering, East China University of Science and Technology, Shanghai 200237, People's Republic of China
| | - Vasil M Garamus
- Helmholtz-Zentrum Geesthacht, Centre for Materials and Coastal Research, Institute of Materials Research, Max-Planck-Strasse 1, 21502 Geesthacht, Germany
| | - Fang Liu
- Shanghai Key Laboratory of Functional Materials Chemistry and State Key Laboratory of Bioreactor Engineering, East China University of Science and Technology, Shanghai 200237, People's Republic of China
| | - Jingwen Xiao
- Shanghai Key Laboratory of Functional Materials Chemistry and State Key Laboratory of Bioreactor Engineering, East China University of Science and Technology, Shanghai 200237, People's Republic of China
| | - Helmut Eckerlebe
- Helmholtz-Zentrum Geesthacht, Centre for Materials and Coastal Research, Institute of Materials Research, Max-Planck-Strasse 1, 21502 Geesthacht, Germany
| | - Regine Willumeit-Römer
- Helmholtz-Zentrum Geesthacht, Centre for Materials and Coastal Research, Institute of Materials Research, Max-Planck-Strasse 1, 21502 Geesthacht, Germany
| | - Bozhong Mu
- Shanghai Key Laboratory of Functional Materials Chemistry and State Key Laboratory of Bioreactor Engineering, East China University of Science and Technology, Shanghai 200237, People's Republic of China
| | - Aihua Zou
- Shanghai Key Laboratory of Functional Materials Chemistry and State Key Laboratory of Bioreactor Engineering, East China University of Science and Technology, Shanghai 200237, People's Republic of China.
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Fu QY, Liang Y, Zou A, Wang T, Zhao XD, Wan J. [Relationships between electrophysiological characteristic of speech evoked auditory brainstem response and Mandarin monosyllable discriminative ability at different hearing impairment]. Zhonghua Er Bi Yan Hou Tou Jing Wai Ke Za Zhi 2016; 51:247-55. [PMID: 27095715 DOI: 10.3760/cma.j.issn.1673-0860.2016.04.002] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
OBJECTIVE To investigate the relationships between electrophysiological characteristic of speech evoked auditory brainstem response(s-ABR) and Mandarin phonetically balanced maximum(PBmax) at different hearing impairment, so as to provide more clues for the mechanism of speech cognitive behavior. METHOD Forty-one ears in 41 normal hearing adults(NH), thirty ears in 30 conductive hearing loss patients(CHL) and twenty-seven ears in 27 sensorineural hearing loss patients(SNHL) were included in present study. The speech discrimination scores were obtained by Mandarin phonemic-balanced monosyllable lists via speech audiometric software. Their s-ABRs were recorded with speech syllables /da/ with the intensity of phonetically balanced maximum(PBmax). The electrophysiological characteristic of s-ABR, as well as the relationships between PBmax and s-ABR parameters including latency in time domain, fundamental frequency(F0) and first formant(F1) in frequency domain were analyzed statistically. RESULTS All subjects completed good speech perception tests and PBmax of CHL and SNHL had no significant difference (P>0.05), but both significantly less than that of NH (P<0.05). While divided the subjects into three groups by 90%<PBmax≤100%, 80%<PBmax≤90% and PBmax≤80%, the results showed that all subjects decreased amplitudes of F0 and F1, and increased latency of feature peaks as PBmax reduced. In the same PBmax group, latency of feature peaks increased and amplitudes of F0 and F1 decreased from SNHL, CHL to NH. All subjects showed strongest significant positive correlation between amplitudes of F0 and F1with PBmax respectively, as well as significant negative correlation between latencies of all the feature peaks with PBmax. A stepwise regression analysis equation displayed that the sum of latencies of peak A and F, and amplitudes of F0 and F1 attributed to PBmax reached 76%, and their beta coefficient decreased from amplitudes of F0 and amplitudes of F1, latencies of peak F to latencies of peak A. CONCLUSIONS These electrophysiological characteristics of s-ABR showed closely and stably associated with Mandarin monosyllable discriminative abilities at different hearing impairment. Some electrophysiological characteristics such as amplitudes of F0 and F1, latencies of peak F and A may play more important roles in speech recognition assess, which may be applied combined or separately to further investigation of speech perception and temporal processing abilities.
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Affiliation(s)
- Q Y Fu
- Department of Otorhinolaryngology Head and Neck Surgery, Guangdong No.2 Provincial People's Hospital, Guangzhou 510317, China
| | - Y Liang
- Department of Otorhinolaryngology Head and Neck Surgery, Nanfang Hospital, Southern Medical University, Guangzhou 510515, China
| | - A Zou
- School of Biomedical Engineering, Southern Medical University, Guangzhou 510515, China
| | - T Wang
- School of Biomedical Engineering, Southern Medical University, Guangzhou 510515, China
| | - X D Zhao
- Department of Otorhinolaryngology Head and Neck Surgery, Guangdong No.2 Provincial People's Hospital, Guangzhou 510317, China
| | - J Wan
- Department of Otorhinolaryngology Head and Neck Surgery, Guangdong No.2 Provincial People's Hospital, Guangzhou 510317, China
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Chen Y, Minh LV, Liu J, Angelov B, Drechsler M, Garamus VM, Willumeit-Römer R, Zou A. Baicalin loaded in folate-PEG modified liposomes for enhanced stability and tumor targeting. Colloids Surf B Biointerfaces 2015; 140:74-82. [PMID: 26741267 DOI: 10.1016/j.colsurfb.2015.11.018] [Citation(s) in RCA: 54] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2015] [Revised: 11/03/2015] [Accepted: 11/10/2015] [Indexed: 01/21/2023]
Abstract
Bioavailability of baicalin (BAI), an example of traditional Chinese medicine, has been modified by loading into liposome. Several liposome systems of different composition i.e., lipid/cholesterol (L), long-circulating stealth liposome (L-PEG) and folate receptor (FR)-targeted liposome (L-FA) have been used as the drug carrier for BAI. The obtained liposomes were around 80 nm in diameter with proper zeta potentials about -25 mV and sufficient physical stability in 3 months. The entrapment efficiency and loading efficiency of BAI in the liposomes were 41.0-46.4% and 8.8-10.0%, respectively. The morphology details of BAI lipsosome systems i.e., formation of small unilamellar vesicles, have been determined by cryogenic transmission electron microscopy (cryo-TEM) and small angle X-ray scattering (SAXS). In vitro cytotoxicity of BAI liposomes against HeLa cells was evaluated by MTT assay. BAI loaded FR-targeted liposomes showed higher cytotoxicity and cellular uptake compared with non-targeted liposomes. The results suggested that L-FA-BAI could enhance anti-tumor efficiency and should be an effective FR-targeted carrier system for BAI delivery.
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Affiliation(s)
- Yiyin Chen
- State Key Laboratory of Bioreactor Engineering & Shanghai Key Laboratory of Functional Materials Chemistry, East China University of Science and Technology, Shanghai 200237, PR China
| | - Le Van Minh
- State Key Laboratory of Bioreactor Engineering & Shanghai Key Laboratory of Functional Materials Chemistry, East China University of Science and Technology, Shanghai 200237, PR China; NTT Institute of Hi-Technology (NIH), Nguyen Tat Thanh University, Ho Chi Minh City, Viet Nam
| | - Jianwen Liu
- State Key Laboratory of Bioreactor Engineering & Shanghai Key Laboratory of Functional Materials Chemistry, East China University of Science and Technology, Shanghai 200237, PR China
| | - Borislav Angelov
- Institute of Macromolecular Chemistry, Academy of Sciences of the Czech Republic, Heyrovsky Sq. 2, CZ-16206 Prague, Czech Republic
| | - Markus Drechsler
- Laboratory for Soft Matter Electron Microscopy, Bayreuth Institute of Macromolecular Research (BIMF), University of Bayreuth, D-95440, Bayreuth, Germany
| | - Vasil M Garamus
- Helmholtz-Zentrum Geesthacht: Centre for Materials and Coast Research, Institute of Materials Research, Max-Planck-Str. 1, D-21502 Geesthacht, Germany
| | - Regine Willumeit-Römer
- Helmholtz-Zentrum Geesthacht: Centre for Materials and Coast Research, Institute of Materials Research, Max-Planck-Str. 1, D-21502 Geesthacht, Germany
| | - Aihua Zou
- State Key Laboratory of Bioreactor Engineering & Shanghai Key Laboratory of Functional Materials Chemistry, East China University of Science and Technology, Shanghai 200237, PR China.
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Chen Y, Angelova A, Angelov B, Drechsler M, Garamus VM, Willumeit-Römer R, Zou A. Sterically stabilized spongosomes for multidrug delivery of anticancer nanomedicines. J Mater Chem B 2015; 3:7734-7744. [DOI: 10.1039/c5tb01193k] [Citation(s) in RCA: 60] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Abstract
SAXS patterns of drug-loaded lipid nanocarriers stabilized by polysorbate P80 (left); cryo-TEM image of BAI-BJO-spongosomes-2 (right).
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Affiliation(s)
- Yiyin Chen
- East China University of Science and Technology
- Shanghai
- China
| | - Angelina Angelova
- CNRS UMR8612 Institut Galien Paris-Sud
- Univ Paris Sud
- LabEx LERMIT
- Châtenay-Malabry
- F-92296 France
| | - Borislav Angelov
- Institute of Macromolecular Chemistry
- Academy of Sciences of the Czech Republic
- 16206 Prague
- Czech Republic
| | - Markus Drechsler
- Laboratory for Soft Matter Electron Microscopy
- Bayreuth Institute of Macromolecular Research (BIMF)
- University of Bayreuth
- D-95440 Bayreuth
- Germany
| | - Vasil M. Garamus
- Helmholtz-Zentrum Geesthacht
- Centre for Materials and Coastal Research
- D-21502 Geesthacht
- Germany
| | - Regine Willumeit-Römer
- Helmholtz-Zentrum Geesthacht
- Centre for Materials and Coastal Research
- D-21502 Geesthacht
- Germany
| | - Aihua Zou
- East China University of Science and Technology
- Shanghai
- China
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Chen Y, Yang X, Zhao L, Almásy L, Garamus VM, Willumeit R, Zou A. Preparation and characterization of a nanostructured lipid carrier for a poorly soluble drug. Colloids Surf A Physicochem Eng Asp 2014. [DOI: 10.1016/j.colsurfa.2014.04.032] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Zhao S, Yang X, Garamus VM, Handge UA, Bérengère L, Zhao L, Salamon G, Willumeit R, Zou A, Fan S. Mixture of nonionic/ionic surfactants for the formulation of nanostructured lipid carriers: effects on physical properties. Langmuir 2014; 30:6920-6928. [PMID: 24832357 DOI: 10.1021/la501141m] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
The objective of the present work was to investigate the effects of the mixture of nonionic/ionic surfactants on nanostructured lipid carriers (NLCs). Nonionic surfactant (polyethylene-poly(propylene glycol), Pluronic F68) and ionic surfactant (octenylsuccinic acid modified gum arabic, GA-OSA) were chosen as emulsifier for NLCs. The NLCs systems, which were composed of lipid matrix, modified 4-dedimethylaminosancycline (CMT-8), and various emulsifier agents, were characterized with dynamic light scattering (DLS), high performance liquid chromatography (HPLC), transmission electron microscopy (TEM), small-angle X-ray scattering (SAXS), differential scanning calorimetry (DSC), in vitro release, and phagocytosis assay. This mixture of nonionic/ionic surfactants showed significant effects on physical properties including particle size, polydispersity index (PDI), entrapment efficiency, and particle morphology. Compared with single stabilizer, this mixed nonionic/ionic surfactant system provided NLCs with better drug carrier properties including prolonged release profile and low phagocytosis by phagocyte. We expect that these explorations can provide a new strategy for the development of lipid nanoparticles as drug delivery.
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Affiliation(s)
- Shuangni Zhao
- Shanghai Key Laboratory of Functional Materials Chemistry, State Key Laboratory of Bioreactor Engineering and Institute of Applied Chemistry, East China University of Science and Technology , Shanghai 200237, P. R. China
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Xiao J, Liu F, Garamus VM, Almásy L, Handge UA, Willumeit R, Mu B, Zou A. Insights into the interactions among Surfactin, betaines, and PAM: surface tension, small-angle neutron scattering, and small-angle X-ray scattering study. Langmuir 2014; 30:3363-3372. [PMID: 24593673 DOI: 10.1021/la4046034] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
The interactions among neutral polymer polyacrylamide (PAM) and the biosurfactant Surfactin and four betaines, N-dodecyl-N,N-dimethyl-3-ammonio-1-propanesulfonate (SDDAB), N-tetradecyl-N,N-dimethyl-3-ammonio-1-propanesulfonate (STDAB), N-hexadecyl-N,N-dimethyl-3-ammonio-1-propanesulfonate (SHDAB), and N-dodecyl-N,N-dimethyl-2-ammonio-acetate (C12BE), in phosphate buffer solution (PBS) have been studied by surface tension measurements, small-angle neutron scattering (SANS), small-angle X-ray scattering (SAXS), and rheological experiments. It has been confirmed that the length of alkyl chain is a key parameter of interaction between betaines and PAM. Differences in scattering contrast between X-ray and neutrons for surfactants and PAM molecules provide the opportunity to separately follow the changes of structure of PAM and surfactant aggregates. At concentrations of betaines higher than CMC (critical micelle concentration) and C2 (CMC of surfactant with the presence of polymer), spherical micelles are formed in betaines and betaines/PAM solutions. Transition from spherical to rod-like aggregates (micelles) has been observed in solutions of Surfactin and Surfactin/SDDAB (αSurfactin = 0.67 (molar fraction)) with addition of 0.8 wt % of PAM. The conformation change of PAM molecules only can be observed for Surfactin/SDDAB/PAM system. Viscosity values follow the structural changes suggested from scattering measurements i.e., gradually increases for mixtures PAM → Surfactin/PAM → Surfactin/SDDAB/PAM in PBS.
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Affiliation(s)
- Jingwen Xiao
- Shanghai Key Laboratory of Functional Materials Chemistry and State Key Laboratory of Bioreactor Engineering, East China University of Science and Technology , Shanghai 200237, People's Republic of China
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Liu F, Xiao J, Garamus VM, Almásy L, Willumeit R, Mu B, Zou A. Interaction of the biosurfactant, Surfactin with betaines in aqueous solution. Langmuir 2013; 29:10648-57. [PMID: 23865739 DOI: 10.1021/la400683u] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/21/2023]
Abstract
The interactions between the lipopeptide Surfactin and four betaines, N-dodecyl-N,N-dimethyl-3-ammonio-1-propanesulfonate (SDDAB), N-tetradecyl-N,N-dimethyl-3-ammonio-1-propanesulfonate (STDAB), N-hexadecyl-N,N-dimethyl-3-ammonio-1-propanesulfonate (SHDAB), and N-dodecyl-N,N-dimethyl-2-ammonio-acetate (C12BE) are studied by surface tension and small-angle neutron scattering (SANS). SDDAB, STDAB, and SHDAB have the same headgroup but different hydrophobic chains. C12BE has different headgroup but the same hydrophobic chain with SDDAB. According to the interfacial parameters calculated from surface tension, the synergism between Surfactin and betaine is relevant with the molecule structure of betaine and the mole ratio of them. For betaines, the optimum alkyl chain length (STDAB) and long enough separation between positive charge and negative charge in headgroup are responsible for highest synergetic interaction with Surfactin. The aggregates of individual Surfactin and the mixtures of Surfactin and sulfopropyl betaines are predicted to be spherical based on the packing parameter (pp) and the average packing parameter (P(av)), which is in close qualitative agreement with SANS data analysis, while Surfactin/C12BE forms ellipsoidal micelles due to the smaller headgroup of C12BE.
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Affiliation(s)
- Fang Liu
- Shanghai Key Laboratory of Functional Materials Chemistry, East China University of Science and Technology, Shanghai 200237, People's Republic of China
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Yang X, Zhao L, Almasy L, Garamus VM, Zou A, Willumeit R, Fan S. Preparation and characterization of 4-dedimethylamino sancycline (CMT-3) loaded nanostructured lipid carrier (CMT-3/NLC) formulations. Int J Pharm 2013; 450:225-34. [PMID: 23608200 DOI: 10.1016/j.ijpharm.2013.04.021] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2012] [Revised: 03/18/2013] [Accepted: 04/08/2013] [Indexed: 01/24/2023]
Abstract
Chemically modified tetracyclines (CMTs) have been reported to strongly inhibit proliferation and metastasis of various cancers, but their efficacy is restricted by poor water solubility. In the present study, a hydrophilic 4-dedimethylamino sancycline (CMT-3) loaded nanostructured lipid carrier (CMT-3/NLC) was produced by high pressure homogenization (HPH). The physical properties of CMT-3/NLC formulations were characterized by dynamic light scattering (DLS), high efficiency liquid chromatography (HPLC), atomic force microscopy (AFM), scanning electron microscopy (SEM), small-angle neutron scattering (SANS), small-angle X-ray scattering (SAXS) and wide-angle X-ray powder diffraction (XRD). The lipid and surfactant ingredients, as well as drug/lipid concentrations (m/m) were optimized to produce stable and sustained NLC formulations. In vitro cytotoxicity of CMT-3/NLC against HeLa cells was evaluated by MTT assay. The diameter of CMT-3/NLC was found to increase from 153.1±3.0 nm to a maximum of 168.5±2.0 nm after 30 days of storage, while the entrapment efficiency remained constant at >90%. CMT-3/NLC demonstrated a burst-sustained release profile in release media with different pH, a property attributed to the 3-dimensional structure of CMT-3/NLC. Cell uptake and localization studies indicated that NLC reached the cytoplasm and could thereby facilitate CMT-3 entry into HeLa cells.
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Affiliation(s)
- Xiaomin Yang
- State Key Laboratory of Bioreactor Engineering and Institute of Applied Chemistry, East China University of Science and Technology, Shanghai 200237, PR China
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Yang Y, Zou A, Song C, Mu B. Nanoscale Interfacial Activity of the Natural Lipopeptide, [Asp 1, Glu 5] Surfactin-C16, and DMPC in Mixed Monolayer. CHINESE J CHEM 2012. [DOI: 10.1002/cjoc.201200396] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Liu KKC, Bailey S, Dinh DM, Lam H, Li C, Wells PA, Yin MJ, Zou A. Conformationally-restricted cyclic sulfones as potent and selective mTOR kinase inhibitors. Bioorg Med Chem Lett 2012; 22:5114-7. [DOI: 10.1016/j.bmcl.2012.05.104] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2012] [Revised: 05/18/2012] [Accepted: 05/29/2012] [Indexed: 10/28/2022]
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Liu KKC, Zhu J, Smith GL, Yin MJ, Bailey S, Chen JH, Hu Q, Huang Q, Li C, Li QJ, Marx MA, Paderes G, Richardson PF, Sach NW, Walls M, Wells PA, Baxi S, Zou A. Correction to Highly Selective and Potent Thiophenes as PI3K Inhibitors with Oral Antitumor Activity. ACS Med Chem Lett 2012. [DOI: 10.1021/ml300020u] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
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Liu KKC, Zhu J, Smith GL, Yin MJ, Bailey S, Chen JH, Hu Q, Huang Q, Li C, Li QJ, Marx MA, Paderes G, Richardson PF, Sach NW, Walls M, Wells PA, Zou A, Zou A. Highly Selective and Potent Thiophenes as PI3K Inhibitors with Oral Antitumor Activity. ACS Med Chem Lett 2011; 2:809-13. [PMID: 24900269 DOI: 10.1021/ml200126j] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2011] [Accepted: 09/19/2011] [Indexed: 11/28/2022] Open
Abstract
Highly selective PI3K inhibitors with subnanomolar PI3Kα potency and greater than 7000-fold selectivity against mTOR kinase were discovered through structure-based drug design (SBDD). These tetra-substituted thiophenes were also demonstrated to have good in vitro cellular potency and good in vivo oral antitumor activity in a mouse PI3K driven NCI-H1975 xenograft tumor model. Compounds with the desired human PK predictions and good in vitro ADMET properties were also identified. In this communication, we describe the rationale behind the installation of a critical triazole moiety to maintain the intricate H-bonding network within the PI3K receptor leading to both better potency and selectivity. Furthermore, optimization of the C-4 phenyl group was exploited to maximize the compounds mTOR selectivity.
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Affiliation(s)
- Kevin K.-C. Liu
- Chemistry Department, Oncology, Pfizer Global Research and Development, 10770 Science Center Drive, La Jolla, California 92120, United States
| | - JinJiang Zhu
- Chemistry Department, Oncology, Pfizer Global Research and Development, 10770 Science Center Drive, La Jolla, California 92120, United States
| | - Graham L. Smith
- Chemistry Department, Oncology, Pfizer Global Research and Development, 10770 Science Center Drive, La Jolla, California 92120, United States
| | - Min-Jean Yin
- Chemistry Department, Oncology, Pfizer Global Research and Development, 10770 Science Center Drive, La Jolla, California 92120, United States
| | - Simon Bailey
- Chemistry Department, Oncology, Pfizer Global Research and Development, 10770 Science Center Drive, La Jolla, California 92120, United States
| | - Jeffrey H. Chen
- Chemistry Department, Oncology, Pfizer Global Research and Development, 10770 Science Center Drive, La Jolla, California 92120, United States
| | - Qiyue Hu
- Chemistry Department, Oncology, Pfizer Global Research and Development, 10770 Science Center Drive, La Jolla, California 92120, United States
| | - Qinhua Huang
- Chemistry Department, Oncology, Pfizer Global Research and Development, 10770 Science Center Drive, La Jolla, California 92120, United States
| | - Chunze Li
- Chemistry Department, Oncology, Pfizer Global Research and Development, 10770 Science Center Drive, La Jolla, California 92120, United States
| | - Qing J. Li
- Chemistry Department, Oncology, Pfizer Global Research and Development, 10770 Science Center Drive, La Jolla, California 92120, United States
| | - Matthew A. Marx
- Chemistry Department, Oncology, Pfizer Global Research and Development, 10770 Science Center Drive, La Jolla, California 92120, United States
| | - Genevieve Paderes
- Chemistry Department, Oncology, Pfizer Global Research and Development, 10770 Science Center Drive, La Jolla, California 92120, United States
| | - Paul F. Richardson
- Chemistry Department, Oncology, Pfizer Global Research and Development, 10770 Science Center Drive, La Jolla, California 92120, United States
| | - Neal W. Sach
- Chemistry Department, Oncology, Pfizer Global Research and Development, 10770 Science Center Drive, La Jolla, California 92120, United States
| | - Marlena Walls
- Chemistry Department, Oncology, Pfizer Global Research and Development, 10770 Science Center Drive, La Jolla, California 92120, United States
| | - Peter A. Wells
- Chemistry Department, Oncology, Pfizer Global Research and Development, 10770 Science Center Drive, La Jolla, California 92120, United States
| | - Aihua Zou
- Chemistry Department, Oncology, Pfizer Global Research and Development, 10770 Science Center Drive, La Jolla, California 92120, United States
| | - Aihua Zou
- Chemistry Department, Oncology, Pfizer Global Research and Development , 10770 Science Center Drive, La Jolla, California 92120, United States
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Yuan J, Mehta PP, Yin MJ, Sun S, Zou A, Chen J, Rafidi K, Feng Z, Nickel J, Engebretsen J, Hallin J, Blasina A, Zhang E, Nguyen L, Sun M, Vogt PK, McHarg A, Cheng H, Christensen JG, Kan JLC, Bagrodia S. PF-04691502, a potent and selective oral inhibitor of PI3K and mTOR kinases with antitumor activity. Mol Cancer Ther 2011; 10:2189-99. [PMID: 21750219 DOI: 10.1158/1535-7163.mct-11-0185] [Citation(s) in RCA: 127] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Deregulation of the phosphoinositide 3-kinase (PI3K) signaling pathway such as by PTEN loss or PIK3CA mutation occurs frequently in human cancer and contributes to resistance to antitumor therapies. Inhibition of key signaling proteins in the pathway therefore represents a valuable targeting strategy for diverse cancers. PF-04691502 is an ATP-competitive PI3K/mTOR dual inhibitor, which potently inhibited recombinant class I PI3K and mTOR in biochemical assays and suppressed transformation of avian fibroblasts mediated by wild-type PI3K γ, δ, or mutant PI3Kα. In PIK3CA-mutant and PTEN-deleted cancer cell lines, PF-04691502 reduced phosphorylation of AKT T308 and AKT S473 (IC(50) of 7.5-47 nmol/L and 3.8-20 nmol/L, respectively) and inhibited cell proliferation (IC(50) of 179-313 nmol/L). PF-04691502 inhibited mTORC1 activity in cells as measured by PI3K-independent nutrient stimulated assay, with an IC(50) of 32 nmol/L and inhibited the activation of PI3K and mTOR downstream effectors including AKT, FKHRL1, PRAS40, p70S6K, 4EBP1, and S6RP. Short-term exposure to PF-04691502 predominantly inhibited PI3K, whereas mTOR inhibition persisted for 24 to 48 hours. PF-04691502 induced cell cycle G(1) arrest, concomitant with upregulation of p27 Kip1 and reduction of Rb. Antitumor activity was observed in U87 (PTEN null), SKOV3 (PIK3CA mutation), and gefitinib- and erlotinib-resistant non-small cell lung carcinoma xenografts. In summary, PF-04691502 is a potent dual PI3K/mTOR inhibitor with broad antitumor activity. PF-04691502 has entered phase I clinical trials.
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Affiliation(s)
- Jing Yuan
- Oncology Research Unit, Pfizer Worldwide Research and Development, La Jolla Laboratories, San Diego, CA 92121, USA
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Zhang W, Zou A, Miao J, Yin Y, Tian R, Pang Y, Yang R, Qi J, Yang Y. LeERF-1, a novel AP2/ERF family gene within the B3 subcluster, is down-regulated by light signals in Lithospermum erythrorhizon. Plant Biol (Stuttg) 2011; 13:343-8. [PMID: 21309981 DOI: 10.1111/j.1438-8677.2010.00375.x] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/13/2023]
Abstract
We previously showed that ethylene might be involved in the process of shikonin biosynthesis regulated by light signals. Here, we cloned a full-length cDNA of LeERF-1, a putative ethylene response factor gene, from Lithospermum erythrorhizon using the RACE (rapid amplification of cDNA ends) method. Phylogenetic analysis revealed that LeERF-1 was classified in the B3 subfamily, together with ERF1 and ORA59 of Arabidopsis. Heterologous expression of LeERF-1 in Arabidopsis showed that LeERF-1:eGFP fusion protein was precisely localised to the nucleus, implying that it might function as a transcription factor. Detailed expression analysis with real-time PCR showed that LeERF-1 was significantly down-regulated by white, blue and red light, although the inhibitory effect of red light was relatively weak compared to other light conditions. Tissue-specific expression analysis also indicated that LeERF-1 was dominantly expressed in the roots, which grow in soil in darkness. These patterns are all consistent with the effects of different light signals on regulating formation of shikonin and its derivatives, indicating that LeERF-1 might be a crucial positive regulator, like other B3 subfamily proteins (such as ORCA3 and ORA59), in regulating biosynthesis of secondary metabolites.
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Affiliation(s)
- W Zhang
- NJU-NFU Institute of Plant Molecular Biology, State Key Laboratory of Pharmaceutical Biotechnology, School of Life Sciences, Nanjing University, Nanjing, China
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Liu KKC, Huang X, Bagrodia S, Chen JH, Greasley S, Cheng H, Sun S, Knighton D, Rodgers C, Rafidi K, Zou A, Xiao J, Yan S. Quinazolines with intra-molecular hydrogen bonding scaffold (iMHBS) as PI3K/mTOR dual inhibitors. Bioorg Med Chem Lett 2010; 21:1270-4. [PMID: 21269826 DOI: 10.1016/j.bmcl.2010.12.026] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2010] [Revised: 12/01/2010] [Accepted: 12/06/2010] [Indexed: 11/24/2022]
Abstract
Intra-molecular hydrogen bonding was introduced to the quinazoline motif to form a pseudo ring (intra-molecular H-bond scaffold, iMHBS) to mimic our previous published core structures, pyrido[2.3-D]pyrimidin-7-one and pteridinone, as PI3K/mTOR dual inhibitors. This design results in potent PI3K/mTOR dual inhibitors and the purposed intra-molecular hydrogen bonding structure is well supported by co-crystal structure in PI3Kγ enzyme. In addition, a novel synthetic route was developed for these analogs.
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Affiliation(s)
- Kevin K C Liu
- Pfizer Global Research and Development, Chemistry Department, 10770 Science Center Drive, La Jolla, CA 92120, USA.
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Liu KKC, Bagrodia S, Bailey S, Cheng H, Chen H, Gao L, Greasley S, Hoffman JE, Hu Q, Johnson TO, Knighton D, Liu Z, Marx MA, Nambu MD, Ninkovic S, Pascual B, Rafidi K, Rodgers CML, Smith GL, Sun S, Wang H, Yang A, Yuan J, Zou A. 4-methylpteridinones as orally active and selective PI3K/mTOR dual inhibitors. Bioorg Med Chem Lett 2010; 20:6096-9. [PMID: 20817449 DOI: 10.1016/j.bmcl.2010.08.045] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2010] [Revised: 08/06/2010] [Accepted: 08/10/2010] [Indexed: 11/26/2022]
Abstract
Pteridinones were designed based on a non-selective kinase template. Because of the uniqueness of the PI3K and mTOR binding pockets, a methyl group was introduced to C-4 position of the peteridinone core to give compounds with excellent selectivity for PI3K and mTOR. This series of compounds were further optimized to improve their potency against PI3Kα and mTOR. Finally, orally active compounds with improved solubility and robust in vivo efficacy in tumor growth inhibition were identified as well.
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Affiliation(s)
- Kevin K-C Liu
- Pfizer Global Research and Development, Chemistry Department, La Jolla, CA 92120, USA.
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Zou A, Liu J, Garamus VM, Zheng K, Willumeit R, Mu B. Interaction between the natural lipopeptide [Glu1, Asp5)] surfactin-C15 and hemoglobin in aqueous solution. Biomacromolecules 2010; 11:593-9. [PMID: 20099842 DOI: 10.1021/bm9011453] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The interaction between natural lipopeptide [Glu(1), Asp(5)] surfactin-C15 (surfactin) and hemoglobin (Hb) has been studied. Surface tension measurements show that the critical micelle concentration (cmc) of surfactin increases from 1.54 x 10(-5) to 3.86 x 10(-5) mol/L with Hb. The UV spectra display that the effect of surfactin on Hb exhibits strong concentration-dependent fashion and the aquometHb convert to hemichrome at high surfactin concentration. Small-angle neutron scattering (SANS) and freeze-fracture transmission electron microscopy (FF-TEM) measurements show that surfactin result in the formation of a fractal structure representing a "necklace model" of micelle-like clusters randomly distributed along the protein polypeptide chain at high surfactin concentration. Far-UV circular dichroism (CD) results confirmed that surfactin can disrupt the helical structure of protein at high concentrations, although the enhanced native-like behavior of protein by low concentration of surfactin was observed. The microenvironment change around Phe amino residues and disulfide bonds of Hb was obtained from near-UV CD spectra.
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Affiliation(s)
- Aihua Zou
- State Key Laboratory of Bioreactor Engineering and Institute of Applied Chemistry, East China University of Science and Technology, Shanghai 200237, PR China
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Liu X, Tao X, Zou A, Yang S, Zhang L, Mu B. Effect of the microbial lipopeptide on tumor cell lines: apoptosis induced by disturbing the fatty acid composition of cell membrane. Protein Cell 2010; 1:584-94. [PMID: 21204010 DOI: 10.1007/s13238-010-0072-4] [Citation(s) in RCA: 41] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2010] [Accepted: 05/25/2010] [Indexed: 11/29/2022] Open
Abstract
Microbial lipopeptides play an important role in apoptosis induction of tumor cells. However, there is little knowledge about the relationship between apoptosis induction and membrane fatty acids. The present study focused on the effects of lipopeptides produced by Bacillus subtilis HSO121 on Bcap-37 cell lines. 3-(4, 5-dimethylthiazol-2-yl)-2, 5-diphenyl (MTT) colorimetric assay and surface tension measurements, showed that the critical micelle concentration (CMC) was a critical level for the inhibitory activity of lipopeptides on the growth of Bcap-37 cells. Under the CMC, the order of least to greatest cytotoxicity effect on cancer cell lines by lipopeptides is C(13)-lipopeptide < C(14)-lipopepitde < C(15)-lipopeptide. Above CMC, all lipopeptides directly exert cytolytic activity. The flow cytometric analysis and Hoechst33258 staining experiments confirmed the apoptosis of Bcap-37 cell lines induced by lipopeptides in a dose-dependent manner. This apoptosis was associated with a significant decrease of the unsaturated degree of the cellular fatty acids of Bcap-37 cell lines due to the changes in the cellular fatty acids composition induced by the lipopeptide treatment. These results indicated that disturbance of the cellular fatty acid composition of breast cancer cell lines were related to in the cell apoptosis. Furthermore, significant difference in IC(50) values of tumor cells and normal cell showed that the lipopeptide exerted selective cytotoxicity on the cancer cells. Thus HSO121 lipopeptides may have potential applications as an anticancer leads.
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Affiliation(s)
- Xiangyang Liu
- State Key Laboratory of Bioreactor Engineering and Institute of Applied Chemistry, East China University of Science and Technology, Shanghai 200237, China
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Baxi SM, Engstrom L, Walls M, Marx MA, Murphy S, Ermolieff J, Lingardo L, Lam H, Zou A, Alton G, Smeal T, Yin MJ. Abstract 4482: Novel and selective small molecule inhibitors of 3-phosphoinositide-dependent kinase-1 inhibit the PDK-1/AKT signaling pathway and cell proliferation. Cancer Res 2010. [DOI: 10.1158/1538-7445.am10-4482] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Abstract
Receptor tyrosine kinases (RTKs), PTEN (phosphatase and tensin homolog deleted on chromosome 10), and PIK3CA (encodes the p110α subunit of phosphatidylinositol 3-kinase [PI3K]) frequently contribute to tumor progression through their ability to regulate the intracellular level of phosphatidylinositol-3,4,5-triphosphate (PIP3). 3-phosphoinositide-dependent kinase-1 (PDK-1), a serine/threonine kinase, activates the catalytic domain of numerous kinases by phosphorylating their T-loop sites. PDK-1 activity is required for activation of AKT, p70S6K, and RSK which lead to cell proliferation and transformation. The interaction of the pleckstrin homology (PH) domain of AKT with the membrane bound PIP3 confers a conformational change in AKT, allowing PDK-1 to phosphorylate AKT at the residue threonine-308 (T308). This T-loop activation at T308, along with the phosphorylation of the serine-473 residue by mTOR, fully activates the AKT pathway. Although the roles of many PDK-1 substrates have yet to be characterized, the oncogenic activity of aberrant PI3K pathway signaling through PDK-1 has been extensively validated. We have developed a series of 3-Carbonyl-4-Amino-Pyrrolopyrimidne (CAP) compounds that are potent inhibitors of human PDK-1 (full length and kinase domain) which demonstrate more than 100-fold selectivity against P70S6K, PI3K, AKT, and mTOR. In this study, representative compounds from the CAP series were used to perform a variety of anti-tumor assays. We demonstrate PDK-1 compounds inhibit the phosphorylation of T308 on AKT as well as downstream molecules of the PI3K pathway, such as S6 ribosomal protein (S6RP) in breast, lung and colon cancer cell lines harboring a PI3KCA mutation. Additionally, blockade of AKT and molecules in the PI3K pathway leads to the inhibition of cell proliferation and cell transformation in cancer cells. Our data suggest that the inhibition of PDK-1 activity is sufficient to induce anti-tumor activity in cancer cells through the PI3K-PDK1-AKT axis, and that a potent and specific PDK-1 inhibitor could potentially be developed as a therapeutic agent against several cancer types.
Citation Format: {Authors}. {Abstract title} [abstract]. In: Proceedings of the 101st Annual Meeting of the American Association for Cancer Research; 2010 Apr 17-21; Washington, DC. Philadelphia (PA): AACR; Cancer Res 2010;70(8 Suppl):Abstract nr 4482.
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Berlinski P, Kamerling S, Colhoun H, Forester N, Marotti K, Bagrodia S, Cheng H, Pascual B, Yuan J, Chen J, Engebretse J, Rafidi K, Zhang E, Wang S, Zou A, Carlson T, Almaden C, Barker J, Gehring M, Nguyen L, Shen A, Hemkens M, McHarg A, Sun S, Carley WW. Abstract 5043: Effects of a novel PI3 kinase/mTOR inhibitor on proliferation and pAKT signaling in canine lymphoma. Cancer Res 2010. [DOI: 10.1158/1538-7445.am10-5043] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Abstract
PF-04691503 is a dual inhibitor of both PI3K and mTOR, inhibits PI3K signaling in cancer cell lines, and exhibits in vitro and in vivo anti-proliferative activity in PI3K-pathway driven cell lines. It is a nanomolar inhibitor of all 4 isoforms of the catalytic subunit of PI3K and of both TORC1 and TORC2. Anti-cancer activity of the inhibitor is hypothesized to be through inhibition of survival, proliferative, and anti-apoptotic processes. Phosphorylation of the protein kinase, Akt, is associated with activation of the phosphatidyl 3-kinase (PI-3K)/mammalian target of rapamycin (mTOR) signaling pathway, which plays a role in cell proliferation (Witzig and Kaufmann 2006). Recent studies by Gulmann et al (2005) showed increased pAKT in human lymphoma samples, and those of Rassidakis et al (2005) suggested that inhibition of Akt phosphorylation (pAKT) may be of value in the treatment of lymphoma. Using flow cytometry we report that cells obtained from 10 of 11 lymph node biopsies of dogs with lymphoma exhibit detectable pAKT using a phospho-Akt (Ser473) antibody, compared to an IgG isotype control or a competative phospho-Akt (Ser473) blocking peptide. Cells from normal canine lymph nodes do not exhibit detectable pAKT. The majority of the pAKT signal was generated from lymphoblasts present in the malignant, but not in the normal, lymph nodes.
In separate studies, lymph node cells obtained from healthy dogs and dogs with lymphoma were stimulated in vitro with the mitogen, Con A. The novel PI3K/mTOR dual inhibitor, PF-04691503, produced dose dependent inhibition of proliferation as exemplified in a dog with T-cell lymphoma (EC50 = 18 nM)) and in a normal dog (EC50 = 53 nM)). No pAKT signal could be detected in peripheral blood mononuclear cells, from normal or lymphoma patients stimulated with hu-IGF-1 (the endogenous ligand for PI3), Con-A or LPS.
These data suggest that PI-3 kinase and pAKT (1) are activated in canine lymphoma, (2) play a role in the lymphoproliferation associated with this disease, (3) represent legitimate targets for therapeutic intervention in lymphoma, and (4) can be studied ‘translationally’ in dogs as a model for humans.
Gulmann C, Espina V, Petricoin E, et al. Proteomic analysis of apoptotic pathways reveals prognostic factors in follicular lymphoma. Clin Cancer Res 11:5847-5855, 2005.
Rassidakis GZ, Feretzaki M, Atwell C, et al. Inhibition of Akt increases p27 Kip1 levels and induces cell cycle arrest in anaplastic large cell lymphoma. Blood 105:827-829, 2005.
Witzig TE and Kaufmann SH. Inhibition of phosphatidyl 3-kinase (PI-3K)/mammalian target of rapamycin (mTOR) pathway in hematologic malignancies. Current Treatment Options in Oncology 7:285-294, 2006.
Citation Format: {Authors}. {Abstract title} [abstract]. In: Proceedings of the 101st Annual Meeting of the American Association for Cancer Research; 2010 Apr 17-21; Washington, DC. Philadelphia (PA): AACR; Cancer Res 2010;70(8 Suppl):Abstract nr 5043.
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Zou A, Liu J, Garamus VM, Yang Y, Willumeit R, Mu B. Micellization Activity of the Natural Lipopeptide [Glu1, Asp5] Surfactin-C15 in Aqueous Solution. J Phys Chem B 2010; 114:2712-8. [DOI: 10.1021/jp908675s] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Aihua Zou
- State Key Laboratory of Bioreactor Engineering and Institute of Applied Chemistry, East China University of Science and Technology, Shanghai 200237, P.R. China, and GKSS Research Center, Max-Planck-Str.1, 21502 Geesthacht, Germany
| | - Jing Liu
- State Key Laboratory of Bioreactor Engineering and Institute of Applied Chemistry, East China University of Science and Technology, Shanghai 200237, P.R. China, and GKSS Research Center, Max-Planck-Str.1, 21502 Geesthacht, Germany
| | - Vasil M. Garamus
- State Key Laboratory of Bioreactor Engineering and Institute of Applied Chemistry, East China University of Science and Technology, Shanghai 200237, P.R. China, and GKSS Research Center, Max-Planck-Str.1, 21502 Geesthacht, Germany
| | - Ying Yang
- State Key Laboratory of Bioreactor Engineering and Institute of Applied Chemistry, East China University of Science and Technology, Shanghai 200237, P.R. China, and GKSS Research Center, Max-Planck-Str.1, 21502 Geesthacht, Germany
| | - Regine Willumeit
- State Key Laboratory of Bioreactor Engineering and Institute of Applied Chemistry, East China University of Science and Technology, Shanghai 200237, P.R. China, and GKSS Research Center, Max-Planck-Str.1, 21502 Geesthacht, Germany
| | - Bozhong Mu
- State Key Laboratory of Bioreactor Engineering and Institute of Applied Chemistry, East China University of Science and Technology, Shanghai 200237, P.R. China, and GKSS Research Center, Max-Planck-Str.1, 21502 Geesthacht, Germany
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Grant S, Tran P, Zhang Q, Zou A, Dinh D, Jensen J, Zhou S, Kang X, Zachwieja J, Lippincott J, Liu K, Johnson SL, Scales S, Yin C, Nukui S, Stoner C, Prasanna G, Lafontaine J, Wells P, Li H. Discovery of a novel class of targeted kinase inhibitors that blocks protein kinase C signaling and ameliorates retinal vascular leakage in a diabetic rat model. Eur J Pharmacol 2009; 627:16-25. [PMID: 19850035 DOI: 10.1016/j.ejphar.2009.10.029] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2009] [Revised: 09/18/2009] [Accepted: 10/06/2009] [Indexed: 01/21/2023]
Abstract
Protein kinase C (PKC) family members such as PKCbetaII may become activated in the hyperglycemic state associated with diabetes. Preclinical and clinical data implicate aberrant PKC activity in the development of diabetic microvasculature abnormalities. Based on this potential etiological role for PKC in diabetic complications, several therapeutic PKC inhibitors have been investigated in clinical trials for the treatment of diabetic patients. In this report, we present the discovery and preclinical evaluation of a novel class of 3-amino-pyrrolo[3,4-c]pyrazole derivatives as inhibitors of PKC that are structurally distinct from the prototypical indolocarbazole and bisindolylmaleimide PKC inhibitors. From this pyrrolo-pyrazole series, several compounds were identified from biochemical assays as potent, ATP-competitive inhibitors of PKC activity with high specificity for PKC over other protein kinases. These compounds were also found to block PKC signaling activity in multiple cellular functional assays. PF-04577806, a representative from this series, inhibited PKC activity in retinal lysates from diabetic rats stimulated with phorbol myristate acetate. When orally administered, PF-04577806 showed good exposure in the retina of diabetic Long-Evans rats and ameliorated retinal vascular leakage in a streptozotocin-induced diabetic rat model. These novel PKC inhibitors represent a promising new class of targeted protein kinase inhibitors with potential as therapeutic agents for the treatment of patients with diabetic microvascular complications.
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Affiliation(s)
- Stephan Grant
- Department of Biochemistry and Primary Screening, Pfizer Global Research & Development, Pfizer La Jolla Laboratories, San Diego, CA 92121, United States.
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Thompson AA, Zou A, Yan J, Duggal R, Hao W, Molina D, Cronin CN, Wells PA. Biochemical characterization of recombinant hepatitis C virus nonstructural protein 4B: evidence for ATP/GTP hydrolysis and adenylate kinase activity. Biochemistry 2009; 48:906-16. [PMID: 19146391 DOI: 10.1021/bi801747p] [Citation(s) in RCA: 44] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
While nonstructural protein 4B (NS4B) from hepatitis C virus (HCV) is absolutely required for viral propagation, a full understanding of the enzymatic properties of this protein is lacking. Previous studies suggest that NS4B is located at the endoplasmic reticulum and that the protein structure consists of four central transmembrane domains with the N- and C-termini located in the cytoplasm of the host cell. To characterize the enzymatic activity of NS4B, the full-length protein with a C-terminal His tag was expressed in Sf9 insect cells and stabilized with nonionic detergents during purification. Chemical cross-linking experiments using GTP-gamma-azidoanilide and ATP-gamma-azidoanilide and equilibrium binding analyses with GTPgammaS and ATPgammaS show that both GTP and ATP are bound by NS4B, with ATP displaying a higher affinity. Analyses of enzymatic reactions catalyzed by NS4B indicate that the terminal phosphate groups of ATP, GTP, and GDP are removed to produce ADP, GDP, and GMP, respectively. The k(cat) for hydrolysis of GTP by purified NS4B compared favorably with the k(cat) for hydrolysis of GTP by Ras-p21 in the absence of GTPase activating proteins (GAPs). In addition to the hydrolysis of NTP and NDP substrates, adenylate kinase activity was detected in purified preparations of NS4B with the reverse reaction 2ADP --> ATP + ADP, yielding a larger k(cat) compared to that of the forward reaction ATP + AMP --> 2ADP. These studies suggest that HCV NS4B possesses both adenylate kinase activity and nucleotide hydrolase activity. Mutation of amino acids in the Walker A and B motifs of NS4B resulted in decreased affinity for both GTPgammaS and ATPgammaS as well as decreased ATP hydrolysis and AK activity.
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Affiliation(s)
- Aaron A Thompson
- Department of Biochemical Pharmacology, La Jolla Laboratories, Pfizer Global Research and Development Inc., San Diego, California 92121, USA
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Abstract
UV light can be used to change ordering in lyotropic lamellar (Lα) phases containing a photolyzable anionic surfactant 4-hexylphenylazosulfonate (C6PAS).
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Affiliation(s)
- Julian Eastoe
- School of Chemistry, University of Bristol, Bristol, UKBS8 1TS.
| | - Aihua Zou
- School of Chemistry, University of Bristol, Bristol, UKBS8 1TS.
| | - Youssef Espidel
- School of Chemistry, University of Bristol, Bristol, UKBS8 1TS.
| | - Otto Glatter
- Institut für Chemie, Karl-Franzens Universität Graz, 8010 Graz, Austria
| | - Isabelle Grillo
- Institut Max-Von-Laue-Paul-Langevin, BP 156-X, F-38042 Grenoble, Cedex, France
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Zou A, Hoffmann H, Eastoe J, Glatter O. Glycerol-induced swollen lamellar phases with siloxane copolymers. J Colloid Interface Sci 2007; 316:723-9. [PMID: 17900603 DOI: 10.1016/j.jcis.2007.08.064] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2007] [Revised: 08/14/2007] [Accepted: 08/17/2007] [Indexed: 11/28/2022]
Abstract
Phase behavior is established for a block copolymer polyethyleneoxide-b-dimethylsiloxane-polyethylenoxide (EO)(15)-(PDMS)(15)-(EO)(15) (IM-22) a in glycerol/water mixed solvent. In water alone, the block copolymer forms biphasic micellar/lamellar (L(1)/L(alpha)) systems over the range 10-70 wt%, with single L(alpha)-phases between 70-90 wt%. Strong solvent effects on the phase behavior were noted. For example, using a mixed 60:40 vol% glycerol/water solvent, the single L(alpha)-phase region appears at much lower concentrations, only 20 wt% IM-22, as compared to the biphasic L(1)/L(alpha) system observed in water alone. This interesting observation of L(alpha)-phase swelling on addition of glycerol may be explained by a decrease in attraction between the bilayers, as it is also found that in this mixed glycerol/water solvent there is a close refractive index matching with IM-22. Rheological measurements show the L(alpha)-phases with added glycerol have low shear moduli. The influence of added ionic surfactant sodium dodecylsulfate (SDS) on these swollen IM-22 L(alpha)-phases was studied. Small-angle X-ray scattering (SAXS) indicated the interlamellar distance d remains essentially constant up to 3 mM SDS, and then decreases with increasing SDS content. This weak effect is consistent with the fact that the L(alpha)-phases are most swollen when the mixed solvent contains 60 vol% glycerol. The results suggest that glycerol/water solvent mixtures can be used to tune the refractive index of the background solvent, modifying DLVO-type interactions, and causing significant effects on the phase stability of simple block-copolymer systems.
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Affiliation(s)
- Aihua Zou
- University of Bayreuth, BZKG, Bayreuth 95448, Germany.
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