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Abdeeva IA, Panina YS, Maloshenok LG. Synthetic Biology Approaches to Posttranslational Regulation in Plants. Biochemistry (Mosc) 2024; 89:S278-S289. [PMID: 38621756 DOI: 10.1134/s0006297924140165] [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] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/28/2023] [Revised: 10/10/2023] [Accepted: 10/16/2023] [Indexed: 04/17/2024]
Abstract
To date synthetic biology approaches involving creation of functional genetic modules are used in a wide range of organisms. In plants, such approaches are used both for research in the field of functional genomics and to increase the yield of agricultural crops. Of particular interest are methods that allow controlling genetic apparatus of the plants at post-translational level, which allow reducing non-targeted effects from interference with the plant genome. This review discusses recent advances in the plant synthetic biology for regulation of the plant metabolism at posttranslational level and highlights their future directions.
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Affiliation(s)
- Inna A Abdeeva
- Vavilov Institute of General Genetics, Russian Academy of Sciences, Moscow, 119991, Russia.
| | - Yulia S Panina
- Vavilov Institute of General Genetics, Russian Academy of Sciences, Moscow, 119991, Russia
| | - Liliya G Maloshenok
- Vavilov Institute of General Genetics, Russian Academy of Sciences, Moscow, 119991, Russia.
- Bach Institute of Biochemistry, Federal Research Center of Biotechnology, Russian Academy of Sciences, Moscow, 119071, Russia
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2
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Sitkov N, Zimina T, Kolobov A, Sevostyanov E, Trushlyakova V, Luchinin V, Krasichkov A, Markelov O, Galagudza M, Kaplun D. Study of the Fabrication Technology of Hybrid Microfluidic Biochips for Label-Free Detection of Proteins. Micromachines (Basel) 2021; 13:mi13010020. [PMID: 35056185 PMCID: PMC8779695 DOI: 10.3390/mi13010020] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/22/2021] [Revised: 12/15/2021] [Accepted: 12/22/2021] [Indexed: 05/22/2023]
Abstract
A study of the peculiarities and a comparative analysis of the technologies used for the fabrication of elements of novel hybrid microfluidic biochips for express biomedical analysis have been carried out. The biochips were designed with an incorporated microfluidic system, which enabled an accumulation of the target compounds in a biological fluid to be achieved, thus increasing the biochip system's sensitivity and even implementing a label-free design of the detection unit. The multilevel process of manufacturing a microfluidic system of a given topology for label-free fluorometric detection of protein structures is presented. The technological process included the chemical modification of the working surface of glass substrates by silanization using (3-aminopropyl) trimethoxysilane (APTMS), formation of the microchannels, for which SU-8 technologies and a last generation dry film photoresist were studied and compared. The solid-state phosphor layers were deposited using three methods: drop application; airbrushing; and mechanical spraying onto the adhesive surface. The processes of sealing the system, installing input ports, and packaging using micro-assembly technologies are described. The technological process has been optimized and the biochip was implemented and tested. The presented system can be used to design novel high-performance diagnostic tools that implement the function of express detection of protein markers of diseases and create low-power multimodal, highly intelligent portable analytical decision-making systems in medicine.
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Affiliation(s)
- Nikita Sitkov
- Department of Micro- and Nanoelectronics, Saint Petersburg Electrotechnical University “LETI”, 197376 Saint Petersburg, Russia; (T.Z.); (E.S.); (V.T.); (V.L.)
- Correspondence: (N.S.); (D.K.)
| | - Tatiana Zimina
- Department of Micro- and Nanoelectronics, Saint Petersburg Electrotechnical University “LETI”, 197376 Saint Petersburg, Russia; (T.Z.); (E.S.); (V.T.); (V.L.)
| | - Alexey Kolobov
- Institute of Highly Pure Biopreparations, 197110 Saint Petersburg, Russia;
| | - Evgeny Sevostyanov
- Department of Micro- and Nanoelectronics, Saint Petersburg Electrotechnical University “LETI”, 197376 Saint Petersburg, Russia; (T.Z.); (E.S.); (V.T.); (V.L.)
| | - Valentina Trushlyakova
- Department of Micro- and Nanoelectronics, Saint Petersburg Electrotechnical University “LETI”, 197376 Saint Petersburg, Russia; (T.Z.); (E.S.); (V.T.); (V.L.)
| | - Viktor Luchinin
- Department of Micro- and Nanoelectronics, Saint Petersburg Electrotechnical University “LETI”, 197376 Saint Petersburg, Russia; (T.Z.); (E.S.); (V.T.); (V.L.)
| | - Alexander Krasichkov
- Radio Engineering Systems Department, Saint Petersburg Electrotechnical University “LETI”, 197376 Saint Petersburg, Russia;
| | - Oleg Markelov
- Centre for Digital Telecommunication Technologies, Saint Petersburg Electrotechnical University “LETI”, 5 Professor Popov Street, 197376 Saint Petersburg, Russia;
| | | | - Dmitry Kaplun
- Department of Automation and Control Processes, Saint Petersburg Electrotechnical University “LETI”, 197376 Saint Petersburg, Russia
- Correspondence: (N.S.); (D.K.)
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3
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Sitkov N, Zimina T, Kolobov A, Karasev V, Romanov A, Luchinin V, Kaplun D. Toward Development of a Label-Free Detection Technique for Microfluidic Fluorometric Peptide-Based Biosensor Systems. Micromachines (Basel) 2021; 12:691. [PMID: 34199321 PMCID: PMC8232019 DOI: 10.3390/mi12060691] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/27/2021] [Revised: 05/27/2021] [Accepted: 06/11/2021] [Indexed: 12/29/2022]
Abstract
The problems of chronic or noncommunicable diseases (NCD) that now kill around 40 million people each year require multiparametric combinatorial diagnostics for the selection of effective treatment tactics. This could be implemented using the biosensor principle based on peptide aptamers for spatial recognition of corresponding protein markers of diseases in biological fluids. In this paper, a low-cost label-free principle of biomarker detection using a biosensor system based on fluorometric registration of the target proteins bound to peptide aptamers was investigated. The main detection principle considered includes the re-emission of the natural fluorescence of selectively bound protein markers into a longer-wavelength radiation easily detectable by common charge-coupled devices (CCD) using a specific luminophore. Implementation of this type of detection system demands the reduction of all types of stray light and background fluorescence of construction materials and aptamers. The latter was achieved by careful selection of materials and design of peptide aptamers with substituted aromatic amino acid residues and considering troponin T, troponin I, and bovine serum albumin as an example. The peptide aptamers for troponin T were designed in silico using the «Protein 3D» (SPB ETU, St. Petersburg, Russia) software. The luminophore was selected from the line of ZnS-based solid-state compounds. The test microfluidic system was arranged as a flow through a massive of four working chambers for immobilization of peptide aptamers, coupled with the optical detection system, based on thick film technology. The planar optical setup of the biosensor registration system was arranged as an excitation-emission cascade including 280 nm ultraviolet (UV) light-emitting diode (LED), polypropylene (PP) UV transparent film, proteins layer, glass filter, luminophore layer, and CCD sensor. A laboratory sample has been created.
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Affiliation(s)
- Nikita Sitkov
- Department of Micro- and Nanoelectronics, Saint Petersburg Electrotechnical University “LETI”, 197376 Saint Petersburg, Russia; (T.Z.); (V.K.); (A.R.); (V.L.)
| | - Tatiana Zimina
- Department of Micro- and Nanoelectronics, Saint Petersburg Electrotechnical University “LETI”, 197376 Saint Petersburg, Russia; (T.Z.); (V.K.); (A.R.); (V.L.)
| | - Alexander Kolobov
- Institute of Highly Pure Biopreparations, 197110 Saint Petersburg, Russia;
| | - Vladimir Karasev
- Department of Micro- and Nanoelectronics, Saint Petersburg Electrotechnical University “LETI”, 197376 Saint Petersburg, Russia; (T.Z.); (V.K.); (A.R.); (V.L.)
| | - Alexander Romanov
- Department of Micro- and Nanoelectronics, Saint Petersburg Electrotechnical University “LETI”, 197376 Saint Petersburg, Russia; (T.Z.); (V.K.); (A.R.); (V.L.)
| | - Viktor Luchinin
- Department of Micro- and Nanoelectronics, Saint Petersburg Electrotechnical University “LETI”, 197376 Saint Petersburg, Russia; (T.Z.); (V.K.); (A.R.); (V.L.)
| | - Dmitry Kaplun
- Department of Automation and Control Processes, Saint Petersburg Electrotechnical University “LETI”, 197376 Saint Petersburg, Russia
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Santi M, Finamore F, Cecchettini A, Santorelli FM, Doccini S, Rocchiccioli S, Signore G. Protein Delivery by Peptide-Based Stealth Liposomes: A Biomolecular Insight into Enzyme Replacement Therapy. Mol Pharm 2020; 17:4510-4521. [PMID: 33112630 DOI: 10.1021/acs.molpharmaceut.0c00615] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Infantile neural ceroid lipofuscinosis (INCL) is a lysosomal storage disorder characterized by mutations in the CLN1 gene that leads to lack of the lysosomal enzyme palmitoyl-protein thioesterase-1 (PPT1), which causes the progressive death of cortical neurons. Enzyme replacement therapy (ERT) is one of the most promising treatments, but its translation toward a clinical use is hampered by the need to deliver the enzyme to the central nervous system and a more detailed understanding of its capability to restore physiologic conditions at the biochemical and protein level, beyond the simple regulation of enzymatic activity. Targeted nanoparticles can promote protein delivery to the central nervous system and affect biological pathways inside cells. Here, we describe an innovative peptide-based stealth nanoparticle that inhibits serum protein adsorption exploiting transferrin-driven internalization to convey the PPT1 enzyme to transferrin receptor-mediated pathways (endocytosis in this work, or transcytosis, in perspective, in vivo). These enzyme-loaded nanoparticles were able to restore stable levels of enzymatic activity in CLN1 patient's fibroblasts, comparable with the free enzyme, demonstrating that delivery after encapsulation in the nanocarrier does not alter uptake or intracellular trafficking. We also investigate, for the first time, dysregulated pathways of proteome and palmitoylome and their alteration upon enzyme delivery. Our nanoparticles were able of halving palmitoylated protein levels restoring conditions similar to the normal cells. From proteomic analysis, we also highlighted the reduction of the different groups of proteins after treatments with the free or encapsulated enzyme. In conclusion, our system is able to deliver the enzyme to a model of CLN1 disease restoring normal conditions in cells. Investigation of molecular details of pathologic state and enzyme-based correction reveals dysregulated pathways with unprecedented details for CLN1. Finally, we unveil for the first time the dysregulation landscape of palmitoylome and proteome in primary patient-derived fibroblasts and their modifications in response to enzyme administration. These findings will provide a guideline for the validation of future therapeutic strategies based on enzyme replacement therapy or acting at different metabolic levels.
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Affiliation(s)
- Melissa Santi
- Center for Nanotechnology Innovation@NEST, Istituto Italiano di Tecnologia, Pisa 56127, Italy.,NEST, Scuola Normale Superiore and Istituto Nanoscienze-CNR, Pisa 56127, Italy
| | | | | | | | | | | | - Giovanni Signore
- NEST, Scuola Normale Superiore and Istituto Nanoscienze-CNR, Pisa 56127, Italy.,Fondazione Pisana per la Scienza, Pisa 56017, Italy
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5
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Parlanti P, Boni A, Signore G, Santi M. Targeted Dendrimer-Coated Magnetic Nanoparticles for Selective Delivery of Therapeutics in Living Cells. Molecules 2020; 25:E2252. [PMID: 32397665 DOI: 10.3390/molecules25092252] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2020] [Revised: 05/03/2020] [Accepted: 05/09/2020] [Indexed: 02/07/2023] Open
Abstract
Nanoparticles are widely used as theranostic agents for the treatment of various pathologies, including cancer. Among all, dendrimers-based nanoparticles represent a valid approach for drugs delivery, thanks to their controllable size and surface properties. Indeed, dendrimers can be easily loaded with different payloads and functionalized with targeting agents. Moreover, they can be used in combination with other materials such as metal nanoparticles for combinatorial therapies. Here, we present the formulation of an innovative nanostructured hybrid system composed by a metallic core and a dendrimers-based coating that is able to deliver doxorubicin specifically to cancer cells through a targeting agent. Its dual nature allows us to transport nanoparticles to our site of interest through the magnetic field and specifically increase internalization by exploiting the T7 targeting peptide. Our system can release the drug in a controlled pH-dependent way, causing more than 50% of cell death in a pancreatic cancer cell line. Finally, we show how the system was internalized inside cancer cells, highlighting a peculiar disassembly of the nanostructure at the cell surface. Indeed, only the dendrimeric portion is internalized, while the metal core remains outside. Thanks to these features, our nanosystem can be exploited for a multistage magnetic vector.
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Liu K, Xie F, Zhao T, Zhang R, Gao A, Chen Y, Li H, Zhang S, Xiao Z, Li J, Hong X, Shang L, Huang W, Wang J, El-Rifai W, Zaika A, Chen X, Que J, Lan X. Targeting SOX2 Protein with Peptide Aptamers for Therapeutic Gains against Esophageal Squamous Cell Carcinoma. Mol Ther 2020; 28:901-913. [PMID: 31991109 PMCID: PMC7054732 DOI: 10.1016/j.ymthe.2020.01.012] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [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: 07/07/2019] [Revised: 12/28/2019] [Accepted: 01/02/2020] [Indexed: 01/19/2023] Open
Abstract
Esophageal squamous cell carcinoma (ESCC) is a predominant cancer type in developing countries such as China, where ESCC accounts for approximately 90% of esophageal malignancies. Lacking effective and targeted therapy contributes to the poor 5-year survival rate. Recent studies showed that about 30% of ESCC cases have high levels of SOX2. Herein, we aim to target this transcription factor with aptamer. We established a peptide aptamer library and then performed an unbiased screening to identify several peptide aptamers including P42 that can bind and inhibit SOX2 downstream target genes. We further found that P42 overexpression or incubation with a synthetic peptide 42 inhibited the proliferation, migration, and invasion of ESCC cells. Moreover, peptide 42 treatment inhibited the growth and metastasis of ESCC xenografts in mouse and zebrafish. Further analysis revealed that P42 overexpression led to alternations in the levels of proteins that are important for the proliferation and migration of ESCC cells. Taken together, our study identified the peptide 42 as a key inhibitor of SOX2 function, reducing the proliferation and migration of ESCC cells in vitro and in vivo, and thereby offering a potential therapy against ESCC.
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Affiliation(s)
- Kuancan Liu
- School of Medicine, Xiamen University or Institute for Laboratory Medicine, 900 Hospital of the Joint Logistics Team, Fuzhou, Fujian 350025, China,Dongfang Hospital, Xiamen University, Fuzhou, Fujian 350025, China,Fuzhou General Hospital Clinical Medical School, Fujian Medical University, Fuzhou 350025, China,Corresponding author: Kuancan Liu, School of Medicine, Xiamen University or Institute for Laboratory Medicine, 900 Hospital of the Joint Logistics Team, Fuzhou, Fujian 350025, China.
| | - Fuan Xie
- School of Medicine, Xiamen University or Institute for Laboratory Medicine, 900 Hospital of the Joint Logistics Team, Fuzhou, Fujian 350025, China
| | - Tingting Zhao
- School of Medicine, Xiamen University or Institute for Laboratory Medicine, 900 Hospital of the Joint Logistics Team, Fuzhou, Fujian 350025, China,Dongfang Hospital, Xiamen University, Fuzhou, Fujian 350025, China
| | - Rui Zhang
- School of Medicine, Xiamen University or Institute for Laboratory Medicine, 900 Hospital of the Joint Logistics Team, Fuzhou, Fujian 350025, China
| | - Anding Gao
- School of Medicine, Xiamen University or Institute for Laboratory Medicine, 900 Hospital of the Joint Logistics Team, Fuzhou, Fujian 350025, China
| | - Yunyun Chen
- School of Medicine, Xiamen University or Institute for Laboratory Medicine, 900 Hospital of the Joint Logistics Team, Fuzhou, Fujian 350025, China,Dongfang Hospital, Xiamen University, Fuzhou, Fujian 350025, China
| | - Haiyan Li
- Department of Pathology, Westechester Medical Center, Valhalla, NY 10595, USA
| | - Shihui Zhang
- School of Life Sciences, Central South University, Changsha, Hunan 410083, China
| | - Zhangwu Xiao
- Emergency Department, 900 Hospital of the Joint Logistics Team, Fuzhou, Fujian 350002, China
| | - Jieping Li
- Department of Clinic Medical Laboratory, General Hospital of Fujian Corps of CAPF, Fuzhou, Fujian 350003, China
| | - Xiaoqian Hong
- School of Medicine, Xiamen University or Institute for Laboratory Medicine, 900 Hospital of the Joint Logistics Team, Fuzhou, Fujian 350025, China,Dongfang Hospital, Xiamen University, Fuzhou, Fujian 350025, China
| | - Lei Shang
- School of Medicine, Xiamen University or Institute for Laboratory Medicine, 900 Hospital of the Joint Logistics Team, Fuzhou, Fujian 350025, China,Dongfang Hospital, Xiamen University, Fuzhou, Fujian 350025, China
| | - Weifeng Huang
- Medical College, China Three Gorges University, Yichang, Hubei 443002, China
| | - Junkai Wang
- School of Life Science, Xiamen University, Xiamen, Fujian 361102, China
| | - Wael El-Rifai
- Department of Surgery, University of Miami Miller School of Medicine, Miami, FL 33136, USA
| | - Alexander Zaika
- Department of Surgery, University of Miami Miller School of Medicine, Miami, FL 33136, USA
| | - Xi Chen
- Department of Medical Oncology, 900 Hospital of the Joint Logistics Team or Dongfang Hospital, Fuzhou, Fujian 350025, China
| | - Jianwen Que
- Department of Medicine, Columbia University Medical Center, New York, NY 10032, USA,Corresponding author: Jianwen Que, Department of Medicine, Columbia University Medical Center, New York, NY 10032, USA.
| | - Xiaopeng Lan
- School of Medicine, Xiamen University or Institute for Laboratory Medicine, 900 Hospital of the Joint Logistics Team, Fuzhou, Fujian 350025, China
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Mei XJ, Li MS, Yang Y, Liu M, Mao HY, Zhang ML, Cao MJ, Liu GM. Reducing Allergenicity to Arginine Kinase from Mud Crab Using Site-Directed Mutagenesis and Peptide Aptamers. J Agric Food Chem 2019; 67:4958-4966. [PMID: 30966750 DOI: 10.1021/acs.jafc.9b00608] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [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: 06/09/2023]
Abstract
The mud crab ( Scylla paramamosain) is widely consumed but can cause a severe food allergic reaction. To reduce allergenicity to arginine kinase (AK), site-directed mutagenesis was used to destroy disulfide bonds or mutate critical amino acids of conformational epitopes. Three hypoallergenic mutant AKs (mAK1, mAK2, and mAK3) were generated, with the immunoreactivity decreasing by 54.2, 40.1, and 71.4%, respectively. In comparison to recombinant AK (rAK), the structure of mAKs was clearly changed. Additionally, antisense peptides were designed on the basis of linear epitopes and pepsin-cutting sites of AK. Five peptide aptamers were screened by molecular docking and then analyzed by the immunoglobulin E inhibition enzyme-linked immunosorbent assay and human Laboratory of Allergic Diseases 2 mast cell degranulation assay. The peptide aptamers could significantly inhibit allergenicity of rAK and mAKs, and the inhibitory effect of peptide aptamer 3 was slightly better than the others. These results provide synergistic methods to reduce allergenicity to AK, which could be applied to other shellfish allergens.
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Affiliation(s)
- Xue-Jiao Mei
- College of Food and Biological Engineering, Xiamen Key Laboratory of Marine Functional Food, Fujian Provincial Engineering Technology Research Center of Marine Functional Food, Fujian Collaborative Innovation Center for Exploitation and Utilization of Marine Biological Resources , Jimei University , Xiamen , Fujian 361021 , People's Republic of China
| | - Meng-Si Li
- College of Food and Biological Engineering, Xiamen Key Laboratory of Marine Functional Food, Fujian Provincial Engineering Technology Research Center of Marine Functional Food, Fujian Collaborative Innovation Center for Exploitation and Utilization of Marine Biological Resources , Jimei University , Xiamen , Fujian 361021 , People's Republic of China
| | - Yang Yang
- College of Environment and Public Health , Xiamen Huaxia University , Xiamen , Fujian 361024 , People's Republic of China
| | - Meng Liu
- College of Food and Biological Engineering, Xiamen Key Laboratory of Marine Functional Food, Fujian Provincial Engineering Technology Research Center of Marine Functional Food, Fujian Collaborative Innovation Center for Exploitation and Utilization of Marine Biological Resources , Jimei University , Xiamen , Fujian 361021 , People's Republic of China
| | - Hai-Yan Mao
- College of Food and Biological Engineering, Xiamen Key Laboratory of Marine Functional Food, Fujian Provincial Engineering Technology Research Center of Marine Functional Food, Fujian Collaborative Innovation Center for Exploitation and Utilization of Marine Biological Resources , Jimei University , Xiamen , Fujian 361021 , People's Republic of China
| | - Ming-Li Zhang
- Xiamen Medical College Affiliated Second Hospital , Xiamen , Fujian 361021 , People's Republic of China
| | - Min-Jie Cao
- College of Food and Biological Engineering, Xiamen Key Laboratory of Marine Functional Food, Fujian Provincial Engineering Technology Research Center of Marine Functional Food, Fujian Collaborative Innovation Center for Exploitation and Utilization of Marine Biological Resources , Jimei University , Xiamen , Fujian 361021 , People's Republic of China
| | - Guang-Ming Liu
- College of Food and Biological Engineering, Xiamen Key Laboratory of Marine Functional Food, Fujian Provincial Engineering Technology Research Center of Marine Functional Food, Fujian Collaborative Innovation Center for Exploitation and Utilization of Marine Biological Resources , Jimei University , Xiamen , Fujian 361021 , People's Republic of China
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8
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Zhao Y, Fletcher NL, Liu T, Gemmell AC, Houston ZH, Blakey I, Thurecht KJ. In vivo therapeutic evaluation of polymeric nanomedicines: effect of different targeting peptides on therapeutic efficacy against breast cancer. Nanotheranostics 2018; 2:360-370. [PMID: 30324082 PMCID: PMC6170333 DOI: 10.7150/ntno.27142] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2018] [Accepted: 08/12/2018] [Indexed: 01/18/2023] Open
Abstract
Targeted nanomedicines offer many advantages over macromolecular therapeutics that rely only on passive accumulation within the tumour environment. The aim of this work was to investigate the in vivo anticancer efficiency of polymeric nanomedicines that were conjugated with peptide aptamers that show high affinity for receptors on many cancer cells. In order to assess the ability for the nanomedicine to treat cancer and investigate how structure affected the behavior of the nanomedicine, three imaging modalities were utilized, including in vivo optical imaging, multispectral optoacoustic tomography (MSOT) and ex vivo confocal microscopy. An 8-mer (A8) or 13-mer (A13) peptide aptamer that have been shown to exhibit high affinity for heat shock protein 70 (HSP70) was covalently-bound to hyperbranched polymer (HBP) nanoparticles with the purpose of both cellular targeting, as well as the potential to impart some level of chemo-sensitization to the cells. Furthermore, doxorubicin was bound to the polymeric carrier as the anticancer drug, and Cyanine-5.5 (Cy5.5) was incorporated into the polymer as a monomeric fluorophore to aid in monitoring the behavior of the nanomedicine. Enhanced tumour regression was observed in nude mice bearing MDA-MB-468 xenografts when the nanocarriers were targeted using the peptide ligands, compared to control groups treated with free DOX or HBP without aptamer. The accumulated DOX level in solid tumours was 5.5 times higher in mice treated with the targeted therapeutic, than mice treated with free DOX, and 2.6 times higher than the untargeted nanomedicine that relied only on passive accumulation. The results suggest that aptamer-targeted therapeutics have great potential for improving accumulation of nanomedicines in tumours for therapy.
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Affiliation(s)
- Yongmei Zhao
- Centre for Advanced Imaging, Australian Institute for Bioengineering and Nanotechnology and ARC Centre of Excellence in Convergent Bio-Nano Science and Technology, University of Queensland, Brisbane, 4072, Australia.,QIMR Berghofer Medical Research Institute, 300 Herston Road, Brisbane, QLD, 4006, Australia
| | - Nicholas L Fletcher
- Centre for Advanced Imaging, Australian Institute for Bioengineering and Nanotechnology and ARC Centre of Excellence in Convergent Bio-Nano Science and Technology, University of Queensland, Brisbane, 4072, Australia.,QIMR Berghofer Medical Research Institute, 300 Herston Road, Brisbane, QLD, 4006, Australia
| | - Tianqing Liu
- Centre for Advanced Imaging, Australian Institute for Bioengineering and Nanotechnology and ARC Centre of Excellence in Convergent Bio-Nano Science and Technology, University of Queensland, Brisbane, 4072, Australia.,QIMR Berghofer Medical Research Institute, 300 Herston Road, Brisbane, QLD, 4006, Australia
| | - Anna C Gemmell
- Centre for Advanced Imaging, Australian Institute for Bioengineering and Nanotechnology and ARC Centre of Excellence in Convergent Bio-Nano Science and Technology, University of Queensland, Brisbane, 4072, Australia.,QIMR Berghofer Medical Research Institute, 300 Herston Road, Brisbane, QLD, 4006, Australia
| | - Zachary H Houston
- Centre for Advanced Imaging, Australian Institute for Bioengineering and Nanotechnology and ARC Centre of Excellence in Convergent Bio-Nano Science and Technology, University of Queensland, Brisbane, 4072, Australia.,QIMR Berghofer Medical Research Institute, 300 Herston Road, Brisbane, QLD, 4006, Australia
| | - Idriss Blakey
- Centre for Advanced Imaging, Australian Institute for Bioengineering and Nanotechnology and ARC Centre of Excellence in Convergent Bio-Nano Science and Technology, University of Queensland, Brisbane, 4072, Australia.,QIMR Berghofer Medical Research Institute, 300 Herston Road, Brisbane, QLD, 4006, Australia
| | - Kristofer J Thurecht
- Centre for Advanced Imaging, Australian Institute for Bioengineering and Nanotechnology and ARC Centre of Excellence in Convergent Bio-Nano Science and Technology, University of Queensland, Brisbane, 4072, Australia.,QIMR Berghofer Medical Research Institute, 300 Herston Road, Brisbane, QLD, 4006, Australia
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9
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Liu P, Chen Y, Wang D, Tang Y, Tang H, Song H, Sun Q, Zhang Y, Liu Z. Genetic Selection of Peptide Aptamers That Interact and Inhibit Both Small Protein B and Alternative Ribosome-Rescue Factor A of Aeromonas veronii C4. Front Microbiol 2016; 7:1228. [PMID: 27588015 PMCID: PMC4988972 DOI: 10.3389/fmicb.2016.01228] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2016] [Accepted: 07/22/2016] [Indexed: 12/29/2022] Open
Abstract
Aeromonas veronii is a pathogenic gram-negative bacterium, which infects a variety of animals and results in mass mortality. The stalled-ribosome rescues are reported to ensure viability and virulence under stress conditions, of which primarily include trans-translation and alternative ribosome-rescue factor A (ArfA) in A. veronii. For identification of specific peptides that interact and inhibit the stalled-ribosome rescues, peptide aptamer library (pTRG-SN-peptides) was constructed using pTRG as vector and Staphylococcus aureus nuclease (SN) as scaffold protein, in which 16 random amino acids were introduced to form an exposed surface loop. In the meantime both Small Protein B (SmpB) which acts as one of the key components in trans-translation, and ArfA were inserted to pBT to constitute pBT-SmpB and pBT-ArfA, respectively. The peptide aptamer PA-2 was selected from pTRG-SN-peptides by bacterial two-hybrid system (B2H) employing pBT-SmpB or pBT-ArfA as baits. The conserved sites G133K134 and D138K139R140 of C-terminal SmpB were identified by interacting with N-terminal SN, and concurrently the residue K62 of ArfA was recognized by interacting with the surface loop of the specific peptide aptamer PA-2. The expression plasmids pN-SN or pN-PA-2, which combined the duplication origin of pRE112 with the neokanamycin promoter expressing SN or PA-2, were created and transformed into A. veronii C4, separately. The engineered A. veronii C4 which endowing SN or PA-2 expression impaired growth capabilities under stress conditions including temperatures, sucrose, glucose, potassium chloride (KCl) and antibiotics, and the stress-related genes rpoS and nhaP were down-regulated significantly by Quantitative Real-time PCR (qRT-PCR) when treating in 2.0% KCl. Thus, the engineered A. veronii C4 conferring PA-2 expression might be potentially attenuated vaccine, and also the peptide aptamer PA-2 could develop as anti-microbial drugs targeted to the ribosome rescued factors in A. veronii.
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Affiliation(s)
- Peng Liu
- Department of Biology, College of Sciences, Shantou University Shantou, China
| | - Yong Chen
- Hainan Key Laboratory for Sustainable Utilization of Tropical Bioresources, College of Agriculture, Hainan University Haikou, China
| | - Dan Wang
- Hainan Key Laboratory for Sustainable Utilization of Tropical Bioresources, College of Agriculture, Hainan University Haikou, China
| | - Yanqiong Tang
- Hainan Key Laboratory for Sustainable Utilization of Tropical Bioresources, College of Agriculture, Hainan University Haikou, China
| | - Hongqian Tang
- Hainan Key Laboratory for Sustainable Utilization of Tropical Bioresources, College of Agriculture, Hainan University Haikou, China
| | - Haichao Song
- Hainan Key Laboratory for Sustainable Utilization of Tropical Bioresources, College of Agriculture, Hainan University Haikou, China
| | - Qun Sun
- Department of Biotechnology, College of Life Sciences, Sichuan University Chengdu, China
| | - Yueling Zhang
- Department of Biology, College of Sciences, Shantou University Shantou, China
| | - Zhu Liu
- Hainan Key Laboratory for Sustainable Utilization of Tropical Bioresources, College of Agriculture, Hainan University Haikou, China
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Colombo M, Mizzotti C, Masiero S, Kater MM, Pesaresi P. Peptide aptamers: The versatile role of specific protein function inhibitors in plant biotechnology. J Integr Plant Biol 2015; 57:892-901. [PMID: 25966787 DOI: 10.1111/jipb.12368] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/11/2015] [Accepted: 05/05/2015] [Indexed: 06/04/2023]
Abstract
In recent years, peptide aptamers have emerged as novel molecular tools that have attracted the attention of researchers in various fields of basic and applied science, ranging from medicine to analytical chemistry. These artificial short peptides are able to specifically bind, track, and inhibit a given target molecule with high affinity, even molecules with poor immunogenicity or high toxicity, and represent a remarkable alternative to antibodies in many different applications. Their use is on the rise, driven mainly by the medical and pharmaceutical sector. Here we discuss the enormous potential of peptide aptamers in both basic and applied aspects of plant biotechnology and food safety. The different peptide aptamer selection methods available both in vivo and in vitro are introduced, and the most important possible applications in plant biotechnology are illustrated. In particular, we discuss the generation of broad-based virus resistance in crops, "reverse genetics" and aptasensors in bioassays for detecting contaminations in food and feed. Furthermore, we suggest an alternative to the transfer of peptide aptamers into plant cells via genetic transformation, based on the use of cell-penetrating peptides that overcome the limits imposed by both crop transformation and Genetically Modified Organism commercialization.
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Affiliation(s)
- Monica Colombo
- Research and Innovation Centre, Fondazione Edmund Mach, San Michele all'Adige (Trento), Italy
| | - Chiara Mizzotti
- Department of Biosciences, University of Milan, Milano, Italy
| | - Simona Masiero
- Department of Biosciences, University of Milan, Milano, Italy
| | - Martin M Kater
- Department of Biosciences, University of Milan, Milano, Italy
| | - Paolo Pesaresi
- Department of Biosciences, University of Milan, Milano, Italy
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Abstract
Peptide aptamers are proteins selected from combinatorial libraries that display conformationally constrained variable regions. Peptide aptamers can disrupt specific protein interactions and thus represent a useful method for manipulating protein function in vivo. Here, we describe aptamer derivatives that extend the range of functional manipulations. We isolated an aptamer with increased affinity for its Cdk2 target by mutagenizing an existing aptamer and identifying tighter binding mutants with calibrated two-hybrid reporter genes. We used this and other anti-Cdk2 aptamers as recognition domains in chimeric proteins that contained other functional moieties. Aptamers fused to the catalytic domain of a ubiquitin ligase specifically decorated LexA-Cdk2 with ubiquitin moieties in vivo. Aptamers against Cdk2 and another protein, Ste5, that carried a nuclear localization sequence transported their targets into the nucleus. These experiments indicate that fusion proteins containing aptameric recognition moieties will be useful for specific modification of protein function in vivo.
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Affiliation(s)
- P Colas
- Laboratoire de Biologie Moléculaire et Cellulaire, Ecole Normale Supérieure de Lyon, 46 Allée d'Italie, 69364 Lyon Cedex 07, France
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