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Şener D, Erden PE, Kaçar Selvi C. Disposable biosensor based on nanodiamond particles, ionic liquid and poly-l-lysine for determination of phenolic compounds. Anal Biochem 2024; 688:115464. [PMID: 38244752 DOI: 10.1016/j.ab.2024.115464] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2023] [Revised: 01/14/2024] [Accepted: 01/17/2024] [Indexed: 01/22/2024]
Abstract
This study describes the development of a highly sensitive amperometric biosensor for the analysis of phenolic compounds such as catechol. The biosensor architecture is based on the immobilization of tyrosinase (Tyr) on a screen-printed carbon electrode (SPE) modified with nanodiamond particles (ND), 1-butyl-3-methylimidazolium hexafluorophosphate (IL) and poly-l-lysine (PLL). Surface morphologies of the electrodes during the modification process were evaluated by scanning electron microscopy (SEM) and energy-dispersive X-ray spectroscopy (EDX). Cyclic voltammetry (CV) and electrochemical impedance spectroscopy (EIS) were used to investigate the electrochemical characteristics of the modified electrodes. Owing to the synergistic effect of the modification materials, the Tyr/PLL/ND-IL/SPE exhibited high sensitivity (328.2 μA mM-1) towards catechol with a wide linear range (5.0 × 10-8 - 1.2 × 10-5 M) and low detection limit (1.1 × 10-8 M). Furthermore, the method demonstrated good reproducibility and stability. The amperometric response of the biosensor towards other phenolic compounds such as bisphenol A, phenol, p-nitrophenol, m-cresol, p-cresol and o-cresol was also investigated. The analytical applicability of the biosensor was tested by the analysis of catechol in tap water. The results of the tap water analysis showed that the Tyr/PLL/ND-IL/SPE can be used as a practical and effective method for catechol determination.
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Affiliation(s)
- Damla Şener
- Department of Chemistry, Polatlı Faculty of Science and Letters, Ankara Haci Bayram Veli University, Ankara, Türkiye
| | - Pınar Esra Erden
- Department of Chemistry, Polatlı Faculty of Science and Letters, Ankara Haci Bayram Veli University, Ankara, Türkiye.
| | - Ceren Kaçar Selvi
- Department of Chemistry, Faculty of Science, Ankara University, Ankara, Türkiye
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2
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Li S, Wang N, Zhang M, Li X. Enhanced ε‑poly‑L‑lysine production in Streptomyces species by combining interspecific hybridization with multiple antibiotic resistance. Bioprocess Biosyst Eng 2024; 47:519-532. [PMID: 38499687 DOI: 10.1007/s00449-024-02983-9] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2023] [Accepted: 02/09/2024] [Indexed: 03/20/2024]
Abstract
To improve the ε-PL production in wild-type strains of Streptomyces. albulus, Streptomyces. noursei, Streptomyces. rochei and Streptomyces. yunnanensis, the interspecific hybridization based on protoplast fusion was first performed. Two-species hybridizations failed to obtain hybrids with significant increase in ε-PL production, but four-species hybridizations succeed in acquiring many high-yield hybrids. 16S rDNA homology alignment and RAPD confirmed that the hybrid HX17 was restructured by integrating gene fragments from S. albulus and S. rochei with S. noursei as the carrier. S. noursei HX17 was subsequently suffered from mutagenesis and genome shuffling combining with multiple antibiotic resistance, and a mutant S. noursei GX6 was obtained with ε-PL yield of 2.23 g/L in shake-flask fermentation. In fed-batch fermentation, the ε-PL production of GX6 reached 47.2 g/L, which was increased by 95.6% to 136.8% over the wild parents. Ribosomal genes associated with antibiotics were sequenced and majority of mutant strains had mutations at different sites, indicating that the increase of antibiotic resistance was strongly associated with them. This research proved that combining interspecific hybridization with multiple antibiotic resistance was as an effective approach to rapidly improve the ε-PL production in Streptomyces species.
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Affiliation(s)
- Shu Li
- Marine College, Shandong University, Weihai, 264209, Shandong, China.
| | - Nan Wang
- Food and Drug Inspection and Testing Institute at Weihai, Shandong, 264210, China
| | - Meichao Zhang
- Food and Drug Inspection and Testing Institute at Weihai, Shandong, 264210, China
| | - Xiaoting Li
- Marine College, Shandong University, Weihai, 264209, Shandong, China
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3
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Pang J, Huang L, Lian Y, Yuan Z, Wang F, Zhang LM. Co-delivery of siAEG-1 and doxorubicin to treat osteosarcoma via nanomicelles for azide-alkyne "click" conjugation of poly(l-lysine) dendrons onto Zein. Int J Biol Macromol 2024; 264:130729. [PMID: 38460643 DOI: 10.1016/j.ijbiomac.2024.130729] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2024] [Revised: 03/05/2024] [Accepted: 03/06/2024] [Indexed: 03/11/2024]
Abstract
Astrocyte elevated gene-1 (AEG-1) oncogene is a notorious and evolving target in a variety of human malignancies including osteosarcoma. The RNA interference (RNAi) has been clinically proven to effectively knock down specific genes. To successfully implement RNAi in vivo, protective vectors are required not only to protect unstable siRNAs from degradation, but also to deliver siRNAs to target cells with controlled release. Here, we synthesized a Zein-poly(l-lysine) dendrons non-viral modular system that enables efficient siRNA-targeted AEG-1 gene silencing in osteosarcoma and encapsulation of antitumor drugs for controlled release. The rational design of the ZDP integrates the non-ionic and low immunogenicity of Zein and the positive charge of the poly(l-lysine) dendrons (DPLL) to encapsulate siRNA and doxorubicin (DOX) payloads via electrostatic complexes and achieve pH-controlled release in a lysosomal acidic microenvironment. Nanocomplexes-directed delivery greatly improves siRNA stability, uptake, and AEG-1 sequence-specific knockdown in 143B cells, with transfection efficiencies comparable to those of commercial lipofectamine but with lower cytotoxicity. This AEG-1-focused RNAi therapy supplemented with chemotherapy inhibited, and was effective in inhibiting the growth in of osteosarcoma xenografts mouse models. The combination therapy is an alternative or combinatorial strategy that can produce durable inhibitory responses in osteosarcoma patients.
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Affiliation(s)
- Jiadong Pang
- DSAPM Lab and PCFM Lab, School of Materials Science and Engineering, Sun Yat-sen University, Guangzhou 510275, China; Medical Intelligence and Innovation Academy, Southern University of Science and Technology Hospital, Shenzhen 518000, China
| | - Leilei Huang
- Department of Pathology, The First Affiliated Hospital of Sun Yat-sen University, Guangzhou 510080, China
| | - Yating Lian
- Department of Pathology, The First Affiliated Hospital of Sun Yat-sen University, Guangzhou 510080, China
| | - Zhijie Yuan
- Department of Pathology, The First Affiliated Hospital of Sun Yat-sen University, Guangzhou 510080, China
| | - Fen Wang
- Department of Pathology, The First Affiliated Hospital of Sun Yat-sen University, Guangzhou 510080, China.
| | - Li-Ming Zhang
- DSAPM Lab and PCFM Lab, School of Materials Science and Engineering, Sun Yat-sen University, Guangzhou 510275, China.
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4
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Roca S, Leclercq L, Cottet H. Size-based characterization of dendrigraft poly(L-lysine) by free solution capillary electrophoresis using polyelectrolyte multilayer coatings. J Chromatogr A 2024; 1718:464719. [PMID: 38340458 DOI: 10.1016/j.chroma.2024.464719] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2023] [Revised: 01/28/2024] [Accepted: 02/03/2024] [Indexed: 02/12/2024]
Abstract
Dendrigraft poly(L-lysine) (DGL) constitutes a promising dendritic-like drug vehicle with high biocompatibility and straightforward access via ring-opening polymerization of N-carboxyanhydride in water. The characterization of the different generations of DGL is however challenging due to their heterogeneity in molar mass and branching ratio. In this work, free solution capillary electrophoresis was used to perform selective separation of the three first generations of DGL, and optimized conditions were developed to maximize inter-generation resolution. To reduce solute adsorption on the capillary wall, successive multiple ionic polymer layer coatings terminated with a polycation were deposited onto the inner wall surface. PEGylated polycation was also used as the last layer for the control of the electroosmotic flow (EOF), depending on the PEGylation degree and the methyl-polyethylene glycol (mPEG) chain length. 1 kDa mPEG chains and low grafting densities were found to be the best experimental conditions for a fine tuning of the EOF leading to high peak resolution. Molar mass polydispersity and polydispersity in effective electrophoretic mobility were successfully determined for the three first generations of DGL.
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Affiliation(s)
- Sébastien Roca
- IBMM, University of Montpellier, CNRS, ENSCM, Montpellier, France
| | - Laurent Leclercq
- IBMM, University of Montpellier, CNRS, ENSCM, Montpellier, France.
| | - Hervé Cottet
- IBMM, University of Montpellier, CNRS, ENSCM, Montpellier, France.
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Shkodra B, Petrelli M, Yang KA, Tagliaferri A, Lugli P, Petti L, Nakatsuka N. Polymeric integration of structure-switching aptamers on transistors for histamine sensing. Faraday Discuss 2024; 250:43-59. [PMID: 37970875 DOI: 10.1039/d3fd00123g] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2023]
Abstract
Aptamers that undergo large conformational rearrangements at the surface of electrolyte-gated field-effect transistor (EG-FETs)-based biosensors can overcome the Debye length limitation in physiological high ionic strength environments. For the sensitive detection of small molecules, carbon nanotubes (CNTs) that approach the dimensions of analytes of interest are promising channel materials for EG-FETs. However, functionalization of CNTs with bioreceptors using frequently reported surface modification strategies (e.g., π-π stacking), requires highly pristine CNTs deposited through methods that are incompatible with low-cost fabrication methods and flexible substrates. In this work, we explore alternative non-covalent surface chemistry to functionalize CNTs with aptamers. We harnessed the adhesive properties of poly-D-lysine (PDL), to coat the surface of CNTs and then grafted histamine-specific DNA aptamers electrostatically in close proximity to the CNT semiconducting channel. The layer-by-layer assembly was monitored by complementary techniques such as X-ray photoelectron spectroscopy, optical waveguide lightmode spectroscopy, and fluorescence microscopy. Surface characterization confirmed histamine aptamer integration into PDL-coated CNTs and revealed ∼5-fold higher aptamer surface coverage when using CNT networks with high surface areas. Specific aptamers assembled on EG-CNTFETs enabled histamine detection in undiluted high ionic strength solutions in the concentration range of 10 nM to 100 μM. Sequence specificity was demonstrated via parallel measurements with control EG-CNTFETs functionalized with scrambled DNA. Histamine aptamer-modified EG-CNTFETs showed high selectivity vs. histidine, the closest structural analog and precursor to histamine. Taken together, these results implied that target-specific aptamer conformational changes on CNTs facilitate signal transduction, which was corroborated by circular dichroism spectroscopy. Our work suggests that layer-by-layer polymer chemistry enables integration of structure-switching aptamers into flexible EG-CNTFETs for small-molecule biosensing.
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Affiliation(s)
- Bajramshahe Shkodra
- Sensing Technologies Laboratory (STL), Faculty of Engineering, Free University of Bozen-Bolzano, 39100 Bozen, Italy
- Laboratory of Biosensors and Bioelectronics, Institute for Biomedical Engineering, ETH Zürich, CH-8092, Switzerland.
| | - Mattia Petrelli
- Sensing Technologies Laboratory (STL), Faculty of Engineering, Free University of Bozen-Bolzano, 39100 Bozen, Italy
| | - Kyung-Ae Yang
- Center for Innovative Diagnostic and Therapeutic Approaches, Department of Medicine, Columbia University, New York 10032, USA
| | - Anna Tagliaferri
- Sensing Technologies Laboratory (STL), Faculty of Engineering, Free University of Bozen-Bolzano, 39100 Bozen, Italy
| | - Paolo Lugli
- Sensing Technologies Laboratory (STL), Faculty of Engineering, Free University of Bozen-Bolzano, 39100 Bozen, Italy
| | - Luisa Petti
- Sensing Technologies Laboratory (STL), Faculty of Engineering, Free University of Bozen-Bolzano, 39100 Bozen, Italy
| | - Nako Nakatsuka
- Laboratory of Biosensors and Bioelectronics, Institute for Biomedical Engineering, ETH Zürich, CH-8092, Switzerland.
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Chen A, Zhou S, Kong Y, Han W, Li X, Cai X. Enhanced emulsification of cellulose nanocrystals by ε- polylysine to stabilize Pickering emulsions. Int J Biol Macromol 2024; 260:128940. [PMID: 38143050 DOI: 10.1016/j.ijbiomac.2023.128940] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2023] [Revised: 12/03/2023] [Accepted: 12/19/2023] [Indexed: 12/26/2023]
Abstract
This study provides a novel strategy for preparing bio-based antibacterial emulsions stabilized by cellulose nanocrystals (CNCs). Antibacterial ε-polylysine (ε-PL) with a positive charge was introduced into the aqueous phase to modulate the interfacial behavior of CNCs via electrostatic interactions. Pickering emulsions containing ε-PL/CNCs (ε-PL 0.07-0.1 g/L) had significantly better stability, larger emulsion ratio, smaller emulsion droplet diameter, and superior antibacterial ability than emulsions stabilized by CNCs alone. This could be attributed to the formation of a CNC-dense layer at the interface in the continuous phase caused by a reduction of electrostatic repulsion after adding ε-PL. This was confirmed by zeta potential measurements, rheological properties, and bio-freezing scanning electron microscopy. In addition, cinnamaldehyde was introduced into the oil phase to further improve the antibacterial properties of the emulsion, thereby avoiding easy evaporation into water. Our findings provide an innovative solution for preparing bio-based antibacterial emulsions stabilized by ε-PL/CNCs, which will benefit the development of food, medicine, and cosmetic lotions.
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Affiliation(s)
- Anxiang Chen
- Key Laboratory of Pulp and Paper Science & Technology of Ministry of Education, Qilu University of Technology, Shandong Academy of Sciences, Jinan 250353, China
| | - Shijin Zhou
- Key Laboratory of Pulp and Paper Science & Technology of Ministry of Education, Qilu University of Technology, Shandong Academy of Sciences, Jinan 250353, China
| | - Yue Kong
- Key Laboratory of Pulp and Paper Science & Technology of Ministry of Education, Qilu University of Technology, Shandong Academy of Sciences, Jinan 250353, China
| | - Wenjia Han
- Key Laboratory of Pulp and Paper Science & Technology of Ministry of Education, Qilu University of Technology, Shandong Academy of Sciences, Jinan 250353, China
| | - Xia Li
- Key Laboratory of Pulp and Paper Science & Technology of Ministry of Education, Qilu University of Technology, Shandong Academy of Sciences, Jinan 250353, China.
| | - Xinhai Cai
- Yantai University, College of Environmental and Materials Engineering, Yantai 264005, China.
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7
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Giuliano P, La Rosa G, Capozzi S, Cassano E, Damiano S, Habetswallner F, Iodice R, Marra M, Pavone LM, Quarantelli M, Vitelli G, Santillo M, Paternò R. A Blood Test for the Diagnosis of Multiple Sclerosis. Int J Mol Sci 2024; 25:1696. [PMID: 38338973 PMCID: PMC10855725 DOI: 10.3390/ijms25031696] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2023] [Revised: 01/21/2024] [Accepted: 01/26/2024] [Indexed: 02/12/2024] Open
Abstract
Multiple sclerosis (MS) is an autoimmune chronic disease characterized by inflammation and demyelination of the central nervous system (CNS). Despite numerous studies conducted, valid biomarkers enabling a definitive diagnosis of MS are not yet available. The aim of our study was to identify a marker from a blood sample to ease the diagnosis of MS. In this study, since there is evidence connecting the serotonin pathway to MS, we used an ELISA (Enzyme-Linked Immunosorbent Assay) to detect serum MS-specific auto-antibodies (auto-Ab) against the extracellular loop 1 (ECL-1) of the 5-hydroxytryptamine (5-HT) receptor subtype 2A (5-HT2A). We utilized an ELISA format employing poly-D-lysine as a pre-coating agent. The binding of 208 serum samples from controls, both healthy and pathological, and of 104 serum samples from relapsing-remitting MS (RRMS) patients was tested. We observed that the serum-binding activity in control cohort sera, including those with autoimmune and neurological diseases, was ten times lower compared to the RRMS patient cohort (p = 1.2 × 10-47), with a sensitivity and a specificity of 98% and 100%, respectively. These results show that in the serum of patients with MS there are auto-Ab against the serotonin receptor type 2A which can be successfully used in the diagnosis of MS due to their high sensitivity and specificity.
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Affiliation(s)
| | - Giuliana La Rosa
- Dipartimento di Medicina Clinica e Chirurgia, Università di Napoli Federico II, Via Pansini 5, 80131 Naples, Italy; (G.L.R.); (S.C.); (S.D.); (M.M.); (G.V.); (M.S.)
| | - Serena Capozzi
- Dipartimento di Medicina Clinica e Chirurgia, Università di Napoli Federico II, Via Pansini 5, 80131 Naples, Italy; (G.L.R.); (S.C.); (S.D.); (M.M.); (G.V.); (M.S.)
| | - Emanuele Cassano
- Dipartimento di Neuroscienze, Scienze Riproduttive ed Odontostomatologiche, Università di Napoli Federico II, Via Pansini 5, 80131 Napoli, Italy; (E.C.); (R.I.)
| | - Simona Damiano
- Dipartimento di Medicina Clinica e Chirurgia, Università di Napoli Federico II, Via Pansini 5, 80131 Naples, Italy; (G.L.R.); (S.C.); (S.D.); (M.M.); (G.V.); (M.S.)
| | | | - Rosa Iodice
- Dipartimento di Neuroscienze, Scienze Riproduttive ed Odontostomatologiche, Università di Napoli Federico II, Via Pansini 5, 80131 Napoli, Italy; (E.C.); (R.I.)
| | - Maurizio Marra
- Dipartimento di Medicina Clinica e Chirurgia, Università di Napoli Federico II, Via Pansini 5, 80131 Naples, Italy; (G.L.R.); (S.C.); (S.D.); (M.M.); (G.V.); (M.S.)
| | - Luigi Michele Pavone
- Dipartimento di Medicina Molecolare e Biotecnologie Mediche, Università di Napoli Federico II, Via Pansini 5, 80131 Naples, Italy;
| | - Mario Quarantelli
- Biostructure and Bioimaging Institute, Consiglio Nazionale delle Ricerche (CNR), Via De Amicis 95, 80145 Naples, Italy;
| | - Giuseppe Vitelli
- Dipartimento di Medicina Clinica e Chirurgia, Università di Napoli Federico II, Via Pansini 5, 80131 Naples, Italy; (G.L.R.); (S.C.); (S.D.); (M.M.); (G.V.); (M.S.)
| | - Mariarosaria Santillo
- Dipartimento di Medicina Clinica e Chirurgia, Università di Napoli Federico II, Via Pansini 5, 80131 Naples, Italy; (G.L.R.); (S.C.); (S.D.); (M.M.); (G.V.); (M.S.)
| | - Roberto Paternò
- Dipartimento di Medicina Clinica e Chirurgia, Università di Napoli Federico II, Via Pansini 5, 80131 Naples, Italy; (G.L.R.); (S.C.); (S.D.); (M.M.); (G.V.); (M.S.)
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8
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Wang X, Yuan K, Su Y, Li X, Meng L, Zhao N, Hu Y, Duan F, Xu FJ. Tuning Blood-Material Interactions to Generate Versatile Hemostatic Powders and Gels. Adv Healthc Mater 2024; 13:e2301945. [PMID: 37897223 DOI: 10.1002/adhm.202301945] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2023] [Revised: 10/05/2023] [Indexed: 10/29/2023]
Abstract
Polymer-based hemostatic materials/devices have been increasingly exploited for versatile clinical scenarios, while there is an urgent need to reveal the rational design/facile approach for procoagulant surfaces through regulating blood-material interactions. In this work, degradable powders (PLPS) and thermoresponsive gels (F127-PLPS) are readily developed as promising hemostatic materials for versatile clinical applications, through tuning blood-material interactions with optimized grafting of cationic polylysine: the former is facilely prepared by conjugating polylysine onto porous starch particle, while F127-PLPS is prepared by the simple mixture of PLPS and commercial thermosensitive polymer. In vitro and in vivo results demonstrate that PLPS2 with the optimal-/medium content of polylysine grafts achieve the superior hemostatic performance. The underlying procoagulant mechanism of PLPS2 surface is revealed as the selective fibrinogen adsorption among the competitive plasma-protein-adsorption process, which is the foundation of other blood-material interactions. Moreover, in vitro results confirm the achieved procoagulant surface of F127-PLPS through optimal PLPS2 loading. Together with the tunable thermoresponsiveness, F127-PLPS exhibits outstanding hemostatic utilization in both femoral-artery-injury and renal-artery-embolization models. The work thereby pioneers an appealing approach for generating versatile polymer-based hemostatic materials/devices.
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Affiliation(s)
- Xueru Wang
- State Key Laboratory of Chemical Resource Engineering, Key Lab of Biomedical Materials of Natural Macromolecules (Beijing University of Chemical Technology, Ministry of Education), Beijing Laboratory of Biomedical Material, College of Materials Science and Engineering, Beijing University of Chemical Technology, Beijing, 100029, China
| | - Kai Yuan
- Department of Interventional Radiology, Chinese PLA General Hospital, Beijing, 100853, China
| | - Yang Su
- State Key Laboratory of Chemical Resource Engineering, Key Lab of Biomedical Materials of Natural Macromolecules (Beijing University of Chemical Technology, Ministry of Education), Beijing Laboratory of Biomedical Material, College of Materials Science and Engineering, Beijing University of Chemical Technology, Beijing, 100029, China
| | - Xiaoyue Li
- State Key Laboratory of Chemical Resource Engineering, Key Lab of Biomedical Materials of Natural Macromolecules (Beijing University of Chemical Technology, Ministry of Education), Beijing Laboratory of Biomedical Material, College of Materials Science and Engineering, Beijing University of Chemical Technology, Beijing, 100029, China
| | - Limin Meng
- Department of Medical Imaging, Air Force Medical Center, PLA, Beijing, 100142, China
| | - Nana Zhao
- State Key Laboratory of Chemical Resource Engineering, Key Lab of Biomedical Materials of Natural Macromolecules (Beijing University of Chemical Technology, Ministry of Education), Beijing Laboratory of Biomedical Material, College of Materials Science and Engineering, Beijing University of Chemical Technology, Beijing, 100029, China
| | - Yang Hu
- State Key Laboratory of Chemical Resource Engineering, Key Lab of Biomedical Materials of Natural Macromolecules (Beijing University of Chemical Technology, Ministry of Education), Beijing Laboratory of Biomedical Material, College of Materials Science and Engineering, Beijing University of Chemical Technology, Beijing, 100029, China
| | - Feng Duan
- Department of Interventional Radiology, Chinese PLA General Hospital, Beijing, 100853, China
| | - Fu-Jian Xu
- State Key Laboratory of Chemical Resource Engineering, Key Lab of Biomedical Materials of Natural Macromolecules (Beijing University of Chemical Technology, Ministry of Education), Beijing Laboratory of Biomedical Material, College of Materials Science and Engineering, Beijing University of Chemical Technology, Beijing, 100029, China
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De Windt S, Kourta D, Kanbar M, Wyns C. Optimized Recovery of Immature Germ Cells after Prepubertal Testicular Tissue Digestion and Multi-Step Differential Plating: A Step towards Fertility Restoration with Cancer-Cell-Contaminated Tissue. Int J Mol Sci 2023; 25:521. [PMID: 38203691 PMCID: PMC10779385 DOI: 10.3390/ijms25010521] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2023] [Revised: 12/19/2023] [Accepted: 12/28/2023] [Indexed: 01/12/2024] Open
Abstract
Undifferentiated germ cells, including the spermatogonial stem cell subpopulation required for fertility restoration using human immature testicular tissue (ITT), are difficult to recover as they do not easily adhere to plastics. Due to the scarcity of human ITT for research, we used neonatal porcine ITT. Strategies for maximizing germ cell recovery, including a comparison of two enzymatic digestion protocols (P1 and P2) of ITT fragment sizes (4 mm3 and 8 mm3) and multi-step differential plating were explored. Cellular viability and yield, as well as numbers and proportions of DDX4+ germ cells, were assessed before incubating the cell suspensions overnight on uncoated plastics. Adherent cells were processed for immunocytochemistry (ICC) and floating cells were further incubated for three days on Poly-D-Lysine-coated plastics. Germ cell yield and cell types using ICC for SOX9, DDX4, ACTA2 and CYP19A1 were assessed at each step of the multi-step differential plating. Directly after digestion, cell suspensions contained >92% viable cells and 4.51% DDX4+ germ cells. Pooled results for fragment sizes revealed that the majority of DDX4+ cells adhere to uncoated plastics (P1; 82.36% vs. P2; 58.24%). Further incubation on Poly-D-Lysine-coated plastics increased germ cell recovery (4.80 ± 11.32 vs. 1.90 ± 2.07 DDX4+ germ cells/mm2, respectively for P1 and P2). The total proportion of DDX4+ germ cells after the complete multi-step differential plating was 3.12%. These results highlight a reduced proportion and number of germ cells lost when compared to data reported with other methods, suggesting that multi-step differential plating should be considered for optimization of immature germ cell recovery. While Poly-D-Lysine-coating increased the proportions of recovered germ cells by 16.18% (P1) and 28.98% (P2), future studies should now focus on less cell stress-inducing enzymatic digestion protocols to maximize the chances of fertility restoration with low amounts of cryo-banked human ITT.
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Affiliation(s)
- Sven De Windt
- Laboratoire d’andrologie, Pôle de Recherche en Physiologie de la Reproduction, Institut de Recherche Expérimentale et Clinique (IREC), Université Catholique de Louvain, 1200 Brussels, Belgium; (S.D.W.); (D.K.); (M.K.)
| | - Dhoha Kourta
- Laboratoire d’andrologie, Pôle de Recherche en Physiologie de la Reproduction, Institut de Recherche Expérimentale et Clinique (IREC), Université Catholique de Louvain, 1200 Brussels, Belgium; (S.D.W.); (D.K.); (M.K.)
- Department of Gynecology-Andrology, Cliniques Universitaires Saint-Luc, 1200 Brussels, Belgium
| | - Marc Kanbar
- Laboratoire d’andrologie, Pôle de Recherche en Physiologie de la Reproduction, Institut de Recherche Expérimentale et Clinique (IREC), Université Catholique de Louvain, 1200 Brussels, Belgium; (S.D.W.); (D.K.); (M.K.)
- Department of Gynecology-Andrology, Cliniques Universitaires Saint-Luc, 1200 Brussels, Belgium
| | - Christine Wyns
- Laboratoire d’andrologie, Pôle de Recherche en Physiologie de la Reproduction, Institut de Recherche Expérimentale et Clinique (IREC), Université Catholique de Louvain, 1200 Brussels, Belgium; (S.D.W.); (D.K.); (M.K.)
- Department of Gynecology-Andrology, Cliniques Universitaires Saint-Luc, 1200 Brussels, Belgium
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Piao Z, Lee HJ, Jeong B. Drug-Releasing Thermogel for Osteoarthritis Induction in an Animal Model. Biomacromolecules 2023; 24:6025-6031. [PMID: 37939265 DOI: 10.1021/acs.biomac.3c01111] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2023]
Abstract
The induction of disease states in animal models is an essential step in new drug discovery procedures. In this study, osteoarthritis (OA) was induced in a mouse model using a polypeptide thermogel-based sustained drug release system. Hydrophilic lactobionic acids and hydrophobic n-butyric acids were grafted onto ε-poly(l-lysine) to prepare a thermogelling polymer of ε-poly(l-lysine) grafted with lactobionic acid and butyric acid (PLLB). The gel modulus of PLLB is about 1000 Pa at 37 °C. Collagenase, which causes OA, was slowly released from the PLLB thermogel over two weeks. The PLLB formulation containing collagenases ranging from 1-10 units was intra-articularly injected into the knee of mice. OA mouse models with Osteoarthritis Research Society International (OARSI) grades of 3-6 were developed depending on the amounts of collagenase incorporated in the PLLB thermogel formulation. This study suggests that thermogel-based drug release formulations can be a precise tool for developing animal disease models in a dose-dependent manner.
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Affiliation(s)
- Zhengyu Piao
- Department of Chemistry and Nanoscience, Ewha Womans University, 52 Ewhayeodae-gil, Seodaemun-gu, Seoul 03760, Korea
| | - Hyun Jung Lee
- Department of Chemistry and Nanoscience, Ewha Womans University, 52 Ewhayeodae-gil, Seodaemun-gu, Seoul 03760, Korea
| | - Byeongmoon Jeong
- Department of Chemistry and Nanoscience, Ewha Womans University, 52 Ewhayeodae-gil, Seodaemun-gu, Seoul 03760, Korea
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11
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Nobeyama T, Furuki T, Shiraki K. Phase-Diagram Observation of Liquid-Liquid Phase Separation in the Poly(l-lysine)/ATP System and a Proposal for Diagram-Based Application Strategy. Langmuir 2023; 39:17043-17049. [PMID: 37967197 DOI: 10.1021/acs.langmuir.3c01640] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2023]
Abstract
Liquid-liquid phase separation (LLPS) is essential to understanding the biomacromolecule compartmentalization in living cells and to developing soft-matter structures for chemical reactions and drug delivery systems. However, the importance of detailed experimental phase diagrams of modern LLPS systems tends to be overlooked in recent times. Even for the poly(l-lysine) (PLL)/ATP system, which is one of the most widely used LLPS models, any detailed phase diagram of LLPS has not been reported. Herein, we report the first phase diagram of the PLL/ATP system and demonstrate the feasibility of phase-diagram-based research design for understanding the physical properties of LLPS systems and realizing biophysical and medical applications. We established an experimentally handy model for the droplet formation-disappearance process by generating a concentration gradient in a chamber for extracting a suitable condition on the phase diagram, including the two-phase droplet region. As a proof of concept of pharmaceutical application, we added a human immunoglobulin G (IgG) solution to the PLL/ATP system. Using the knowledge from the phase diagram, we realized the formation of IgG/PLL droplets in a pharmaceutically required IgG concentration of ca. 10 mg/mL. Thus, this study provides guidance for using the phase diagram to analyze and utilize LLPS.
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Affiliation(s)
- Tomohiro Nobeyama
- Faculty of Pure and Applied Sciences, University of Tsukuba, Tsukuba 305-8573, Japan
| | - Tomohiro Furuki
- Faculty of Pure and Applied Sciences, University of Tsukuba, Tsukuba 305-8573, Japan
| | - Kentaro Shiraki
- Faculty of Pure and Applied Sciences, University of Tsukuba, Tsukuba 305-8573, Japan
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12
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Abstract
Invasive fungal infections pose a crucial threat to public health and are an under-recognized component of antimicrobial resistance, which is an emerging crisis worldwide. Here we designed and synthesized a panel of multi-arm ε-polylysines (ε-mPLs, nR-Km) with a precise number of n = 3-6 arms of ε-oligo(L-lysine)s and a precise arm length of m = 3-7 ε-lysine residues. ε-mPLs have good biocompatibility and exhibited broad-spectrum antifungal activities towards Aspergillus, Mucorales and Candida species, and their antifungal activities increased with residue arm length. Among these ε-mPLs, 3R-K7 showed high antifungal activity against C. albicans with a MIC value of as low as 24 μg mL-1 (only 1/16th that of ε-PL) and also exhibited similar antifungal activity towards the clinically isolated multi-drug resistant (MDR) C. albicans strain. Furthermore, 3R-K7 could inhibit the formation of C. albicans biofilms and kill the cells within mature C. albicans biofilms. Mechanistic studies proved that 3R-K7 killed fungal cells by entering the cells to generate reactive oxygen species (ROS) and induce cell apoptosis. An in vivo study showed that 3R-K7 significantly increased the survival rate of mice in a systemic murine candidiasis model, demonstrating that ε-mPL has great potential as a new antifungal agent.
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Affiliation(s)
- Yuanqiao Cao
- Key Laboratory of Polymer Ecomaterials, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, 5625 Renmin Street, Changchun, Jilin 130022, P. R. China.
- School of Applied Chemistry and Engineering, University of Science and Technology of China, Hefei 230026, P. R. China
| | - Ming Liu
- Key Laboratory of Polymer Ecomaterials, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, 5625 Renmin Street, Changchun, Jilin 130022, P. R. China.
| | - Miaomiao Han
- Key Laboratory of Polymer Ecomaterials, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, 5625 Renmin Street, Changchun, Jilin 130022, P. R. China.
| | - Shengxiang Ji
- Key Laboratory of Polymer Ecomaterials, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, 5625 Renmin Street, Changchun, Jilin 130022, P. R. China.
- School of Applied Chemistry and Engineering, University of Science and Technology of China, Hefei 230026, P. R. China
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13
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Casey-Power S, Vardar C, Ryan R, Behl G, McLoughlin P, Byrne ME, Fitzhenry L. NAD+-associated-hyaluronic acid and poly(L-lysine) polyelectrolyte complexes: An evaluation of their potential for ocular drug delivery. Eur J Pharm Biopharm 2023; 192:62-78. [PMID: 37797681 DOI: 10.1016/j.ejpb.2023.10.004] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2023] [Revised: 09/20/2023] [Accepted: 10/02/2023] [Indexed: 10/07/2023]
Abstract
This study details the formation and characterisation of a novel nicotinamide adenine dinucleotide (NAD+)-associated polymeric nanoparticle system. The development of a polyelectrolyte complex (PEC) composed of two natural polyelectrolytes, hyaluronic acid and poly(L-lysine), and an evaluation of its suitability for NAD+ ocular delivery, primarily based on its physicochemical properties and in vitro release profile under physiological ocular flow rates, were of key focus. Following optimisation of formulation method conditions such as complexation pH, mode of addition, and charge ratio, the PEC was successfully formulated under mild formulation conditions via polyelectrolyte complexation. With a size of 235.1 ± 19.0 nm, a PDI value of 0.214 ± 0.140, and a zeta potential value of - 38.0 ± 1.1 mV, the chosen PEC, loaded with 430 µg of NAD+ per mg of PEC, exhibited non-Fickian, sustained release at physiological flowrates of 10.9 ± 0.2 mg of NAD+ over 14 h. PECs containing up to 200 µM of NAD+ did not induce any significant cytotoxic effects on an immortalised human corneal epithelial cell line. Using fluorescent labeling, the NAD+-associated PECs demonstrated retention within the corneal epithelium layer of a porcine model up to 6 h post incubation under physiological conditions. A study of the physicochemical behaviour of the PECs, in terms of size, zeta potential and NAD+ complexation in response to environmental stimuli,highlighted the dynamic nature of the PEC matrix and its dependence on both pH and ionic condition. Considering the successful formation of reproducible NAD+-associated PECs with suitable characteristics for ocular drug delivery via an inexpensive formulation method, they provide a promising platform for NAD+ ocular delivery with a strong potential to improve ocular health.
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Affiliation(s)
- Saoirse Casey-Power
- Ocular Therapeutics Research Group, Pharmaceutical and Molecular Biotechnology Research Centre, Waterford Campus, South East Technological University, Waterford X91 K0EK, Ireland.
| | - Camila Vardar
- Department of Biomedical Engineering, Rowan-Virtua School of Translational Biomedical Engineering & Sciences, Rowan University, 201 Mullica Hill Road, Glassboro, NJ 08028, USA.
| | - Richie Ryan
- Ocular Therapeutics Research Group, Pharmaceutical and Molecular Biotechnology Research Centre, Waterford Campus, South East Technological University, Waterford X91 K0EK, Ireland.
| | - Gautam Behl
- EirGen Pharma, UNIT 64/64A, Westside Business Park, Old Kilmeaden Road, Co. Waterford X91 YV67, Ireland.
| | - Peter McLoughlin
- Ocular Therapeutics Research Group, Pharmaceutical and Molecular Biotechnology Research Centre, Waterford Campus, South East Technological University, Waterford X91 K0EK, Ireland.
| | - Mark E Byrne
- Department of Biomedical Engineering, Rowan-Virtua School of Translational Biomedical Engineering & Sciences, Rowan University, 201 Mullica Hill Road, Glassboro, NJ 08028, USA; Department of Chemical Engineering, Rowan University, 201 Mullica Hill Road, Glassboro, NJ 08028, USA.
| | - Laurence Fitzhenry
- Ocular Therapeutics Research Group, Pharmaceutical and Molecular Biotechnology Research Centre, Waterford Campus, South East Technological University, Waterford X91 K0EK, Ireland.
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Wang S, Wang R, Chen J, Yang B, Shu J, Cheng F, Tao Y, Shi K, Wang C, Wang J, Xia K, Zhang Y, Chen Q, Liang C, Tang J, Li F. Controlled extracellular vesicles release from aminoguanidine nanoparticle-loaded polylysine hydrogel for synergistic treatment of spinal cord injury. J Control Release 2023; 363:27-42. [PMID: 37722419 DOI: 10.1016/j.jconrel.2023.09.026] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2023] [Revised: 09/09/2023] [Accepted: 09/14/2023] [Indexed: 09/20/2023]
Abstract
Pharmaceutical treatments are critical for the acute and subacute phases of spinal cord injury (SCI) and significantly impact patients' prognoses. However, there is a lack of a precise, multitemporal, integrated drug delivery system for medications administered in both phases. In this study, we prepare a hybrid polylysine-based hydrogel (PBHEVs@AGN) comprising short-term release of pH-responsive aminoguanidine nanoparticles (AGN) and sustained release of extracellular vesicles (EVs) for synergistic SCI treatment. When AGN is exposed to the acidic environment at the injury site, it quickly diffuses out of the hydrogel and releases the majority of the aminoguanidine within 24 h, reducing oxidative stress in lesion tissues. Enriched EVs are gradually released from the hydrogel and remain in the tissue for weeks, providing a long-term anti-inflammatory effect and further ensuring axonal regeneration. Fast-releasing aminoguanidine can cooperate with slow-release EVs to treat SCI more effectively by reducing the production of proinflammatory cytokines and blocking the TLR4/Myd88/NF-κB inflammatory pathway, creating a sustained anti-inflammatory microenvironment for SCI recovery. Our in vivo experiments demonstrate that PBHEVs@AGN reduces the occurrence of scar tissue, encourages remyelination, and speeds up axonal regeneration. Herein, this multi-drug delivery system, which combines the acute release of aminoguanidine and the sustained release of EVs is highly effective for synergistically managing the challenging pathological processes after SCI.
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Affiliation(s)
- Shaoke Wang
- Department of Orthopedics, Tongji Hospital Affiliated to Tongji University, School of Medicine, Tongji University, Shanghai 200065, PR China
| | - Rui Wang
- Key Laboratory of Smart Biomaterials of Zhejiang Province, Collage of Chemical and Biological Engineering, Zhejiang University, Hangzhou 310027, Zhejiang, PR China
| | - Jiangjie Chen
- Department of Orthopedics, 2nd Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou 310009, Zhejiang, PR China; Orthopedics Research Institute of Zhejiang University, Zhejiang University, Hangzhou 310009, Zhejiang, PR China; Key Laboratory of Motor System Disease Research and Precision Therapy of Zhejiang Province, Hangzhou 310009, Zhejiang Province, PR China; Clinical Research Center of Motor System Disease of Zhejiang Province, Hangzhou 310009, Zhejiang Province, PR China
| | - Biao Yang
- Qiandongnan Prefecture People's Hospital, Kaili 556000, Guizhou, PR China
| | - Jiawei Shu
- Department of Orthopedics, 2nd Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou 310009, Zhejiang, PR China; Orthopedics Research Institute of Zhejiang University, Zhejiang University, Hangzhou 310009, Zhejiang, PR China; Key Laboratory of Motor System Disease Research and Precision Therapy of Zhejiang Province, Hangzhou 310009, Zhejiang Province, PR China; Clinical Research Center of Motor System Disease of Zhejiang Province, Hangzhou 310009, Zhejiang Province, PR China
| | - Feng Cheng
- Department of Orthopedics, 2nd Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou 310009, Zhejiang, PR China; Orthopedics Research Institute of Zhejiang University, Zhejiang University, Hangzhou 310009, Zhejiang, PR China; Key Laboratory of Motor System Disease Research and Precision Therapy of Zhejiang Province, Hangzhou 310009, Zhejiang Province, PR China; Clinical Research Center of Motor System Disease of Zhejiang Province, Hangzhou 310009, Zhejiang Province, PR China
| | - Yiqing Tao
- Department of Orthopedics, 2nd Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou 310009, Zhejiang, PR China; Orthopedics Research Institute of Zhejiang University, Zhejiang University, Hangzhou 310009, Zhejiang, PR China; Key Laboratory of Motor System Disease Research and Precision Therapy of Zhejiang Province, Hangzhou 310009, Zhejiang Province, PR China; Clinical Research Center of Motor System Disease of Zhejiang Province, Hangzhou 310009, Zhejiang Province, PR China
| | - Kesi Shi
- Department of Orthopedics, 2nd Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou 310009, Zhejiang, PR China; Orthopedics Research Institute of Zhejiang University, Zhejiang University, Hangzhou 310009, Zhejiang, PR China; Key Laboratory of Motor System Disease Research and Precision Therapy of Zhejiang Province, Hangzhou 310009, Zhejiang Province, PR China; Clinical Research Center of Motor System Disease of Zhejiang Province, Hangzhou 310009, Zhejiang Province, PR China
| | - Chenggui Wang
- The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou 325000, Zhejiang, PR China
| | - Jingkai Wang
- Department of Orthopedics, 2nd Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou 310009, Zhejiang, PR China; Orthopedics Research Institute of Zhejiang University, Zhejiang University, Hangzhou 310009, Zhejiang, PR China; Key Laboratory of Motor System Disease Research and Precision Therapy of Zhejiang Province, Hangzhou 310009, Zhejiang Province, PR China; Clinical Research Center of Motor System Disease of Zhejiang Province, Hangzhou 310009, Zhejiang Province, PR China
| | - Kaishun Xia
- Department of Orthopedics, 2nd Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou 310009, Zhejiang, PR China; Orthopedics Research Institute of Zhejiang University, Zhejiang University, Hangzhou 310009, Zhejiang, PR China; Key Laboratory of Motor System Disease Research and Precision Therapy of Zhejiang Province, Hangzhou 310009, Zhejiang Province, PR China; Clinical Research Center of Motor System Disease of Zhejiang Province, Hangzhou 310009, Zhejiang Province, PR China
| | - Yuang Zhang
- Department of Orthopedics, 2nd Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou 310009, Zhejiang, PR China; Orthopedics Research Institute of Zhejiang University, Zhejiang University, Hangzhou 310009, Zhejiang, PR China; Key Laboratory of Motor System Disease Research and Precision Therapy of Zhejiang Province, Hangzhou 310009, Zhejiang Province, PR China; Clinical Research Center of Motor System Disease of Zhejiang Province, Hangzhou 310009, Zhejiang Province, PR China
| | - Qixin Chen
- Department of Orthopedics, 2nd Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou 310009, Zhejiang, PR China; Orthopedics Research Institute of Zhejiang University, Zhejiang University, Hangzhou 310009, Zhejiang, PR China; Key Laboratory of Motor System Disease Research and Precision Therapy of Zhejiang Province, Hangzhou 310009, Zhejiang Province, PR China; Clinical Research Center of Motor System Disease of Zhejiang Province, Hangzhou 310009, Zhejiang Province, PR China
| | - Chengzhen Liang
- Department of Orthopedics, 2nd Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou 310009, Zhejiang, PR China; Orthopedics Research Institute of Zhejiang University, Zhejiang University, Hangzhou 310009, Zhejiang, PR China; Key Laboratory of Motor System Disease Research and Precision Therapy of Zhejiang Province, Hangzhou 310009, Zhejiang Province, PR China; Clinical Research Center of Motor System Disease of Zhejiang Province, Hangzhou 310009, Zhejiang Province, PR China.
| | - Jianbin Tang
- Key Laboratory of Smart Biomaterials of Zhejiang Province, Collage of Chemical and Biological Engineering, Zhejiang University, Hangzhou 310027, Zhejiang, PR China.
| | - Fangcai Li
- Department of Orthopedics, 2nd Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou 310009, Zhejiang, PR China; Orthopedics Research Institute of Zhejiang University, Zhejiang University, Hangzhou 310009, Zhejiang, PR China; Key Laboratory of Motor System Disease Research and Precision Therapy of Zhejiang Province, Hangzhou 310009, Zhejiang Province, PR China; Clinical Research Center of Motor System Disease of Zhejiang Province, Hangzhou 310009, Zhejiang Province, PR China.
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15
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Patel T, Skonieczna M, Turczyn R, Krukiewicz K. Modulating pro-adhesive nature of metallic surfaces through a polypeptide coupling via diazonium chemistry. Sci Rep 2023; 13:18365. [PMID: 37884622 PMCID: PMC10603177 DOI: 10.1038/s41598-023-45694-z] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2023] [Accepted: 10/23/2023] [Indexed: 10/28/2023] Open
Abstract
The design of biomaterials able to facilitate cell adhesion is critical in the field of tissue engineering. Precise control of surface chemistry at the material/tissue interface plays a major role in enhancing the interactions between a biomaterial and living cells. Bio-integration is particularly important in case of various electrotherapies, since a close contact between tissue and electrode's surface facilitates treatment. A promising approach towards surface biofunctionalization involves the electrografting of diazonium salts followed by the modification of organic layer with pro-adhesive polypeptides. This study focuses on the modification of platinum electrodes with a 4-nitrobenzenediazonium layer, which is then converted to the aminobenzene moiety. The electrodes are further biofunctionalized with polypeptides (polylysine and polylysine/laminin) to enhance cell adhesion. This study also explores the differences between physical and chemical coupling of selected polypeptides to modulate pro-adhesive nature of Pt electrodes with respect to human neuroblastoma SH-SY5Y cells and U87 astrocytes. Our results demonstrate the significant enhancement in cell adhesion for biofunctionalized electrodes, with more amplified adhesion noted for covalently coupled polypeptides. The implications of this research are crucial for the development of more effective and functional biomaterials, particularly biomedical electrodes, which have the potential to advance the field of bioelectronics and improve patients' outcomes.
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Affiliation(s)
- Taral Patel
- Department of Physical Chemistry and Technology of Polymers, Silesian University of Technology, M. Strzody 9, 44-100, Gliwice, Poland
- Joint Doctoral School, Silesian University of Technology, Akademicka 2A, 44-100, Gliwice, Poland
| | - Magdalena Skonieczna
- Biotechnology Centre, Silesian University of Technology, Krzywoustego 8, 44-100, Gliwice, Poland
- Department of Systems Biology and Engineering, Silesian University of Technology, Akademicka 16, 44-100, Gliwice, Poland
| | - Roman Turczyn
- Department of Physical Chemistry and Technology of Polymers, Silesian University of Technology, M. Strzody 9, 44-100, Gliwice, Poland
- Centre for Organic and Nanohybrid Electronics, Silesian University of Technology, Konarskiego 22B, 44-100, Gliwice, Poland
| | - Katarzyna Krukiewicz
- Department of Physical Chemistry and Technology of Polymers, Silesian University of Technology, M. Strzody 9, 44-100, Gliwice, Poland.
- Centre for Organic and Nanohybrid Electronics, Silesian University of Technology, Konarskiego 22B, 44-100, Gliwice, Poland.
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16
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Tempra C, Brkljača Z, Vazdar M. Why do polyarginines adsorb at neutral phospholipid bilayers and polylysines do not? An insight from density functional theory calculations and molecular dynamics simulations. Phys Chem Chem Phys 2023; 25:27204-27214. [PMID: 37791394 DOI: 10.1039/d3cp02411c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/05/2023]
Abstract
Adsorption of cell-penetrating peptides (CPPs) at cellular membranes is the first and necessary step for their subsequent translocation across cellular membranes into the cytosol. It has been experimentally shown that CPPs rich in arginine (Arg) amino acid penetrate across phospholipid bilayers more effectively than their lysine (Lys) rich counterparts. In this work, we aim to understand the differences in the first translocation step, adsorption of Arg9 and Lys9 peptides at fully hydrated neutral phosphatidylcholine (PC) and phosphatidylethanolamine (PE) lipid bilayers and evaluate in detail the energetics of the process using molecular dynamics (MD) simulations and free energy calculations of adsorption of the single peptide. We show that the adsorption of Arg9 is energetically feasible, with the free energy of adsorption being ∼-5.0 kcal mol-1 at PC and ∼-5.5 kcal mol-1 at PE bilayers. In contrast, adsorption of Lys9 is not observed at PC bilayers, and their adsorption at PE bilayers is very weak, being ∼-0.5 kcal mol-1. We show by energy decomposition and analysis of peptide hydration along the membrane that significantly stronger electrostatic interactions of Arg9 with lipid phosphate groups, together with the greater loss of peptide hydration (and in turn stronger hydrophobic interactions) along the membrane translocation path, are the main driving factors governing the adsorption of Arg-rich peptides at neutral lipid bilayers in contrast to Lys-rich peptides. Finally, we also compare the energetics in lipid/bilayer systems with the density functional theory (DFT) calculations of the corresponding model systems in the continuum water model and reveal the energetic differences in different environments.
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Affiliation(s)
- Carmelo Tempra
- Institute of Organic Chemistry and Biochemistry of the Czech Academy of Sciences, Flemingovo náměstí 542/2, 16000 Prague, Czech Republic
| | - Zlatko Brkljača
- Division of Organic Chemistry and Biochemistry, Ruđer Bošković Institute, Bijenička 54, 10000 Zagreb, Croatia
| | - Mario Vazdar
- Department of Mathematics, Informatics, and Cybernetics, University of Chemistry and Technology, Technická 5, 16628 Prague, Czech Republic.
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17
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Yi X, Wan P, Shen W, Zhang X, Zhang P, Xiao C. Synthetic lipo- polylysine with anti-cancer activity. Biomater Sci 2023; 11:6611-6618. [PMID: 37605903 DOI: 10.1039/d3bm01099f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/23/2023]
Abstract
Development of novel therapeutic agents that possess different anticancer mechanisms from the traditional antitumor drugs is highly attractive as no medication can cure all types of cancers. Herein, we report a rational design of antitumor lipo-polylysine polymers as synthetic mimics of biosynthetic lipopeptide surfactants featuring antimicrobial or cytotoxic activities for cancer therapy. The optimal polymer shows a wide range of anticancer activities against multiple cancer cells, including highly metastatic and drug-resistant ones, but low toxicity to normal cells. Mechanism studies show that the optimal polymer can interact with the membrane of cancer cells and induce cell necrosis by triggering cell membrane perforation, which is different from the therapeutic mechanisms of traditional anticancer drugs. In vivo studies imply that the optimal polymer efficiently inhibits tumor growth without causing obvious side effects on a C26 graft tumor model. Overall, the lipopeptide-mimicking lipo-polylysine with the advantages of easy synthesis and low cost provides a new anticancer strategy with high efficacy and biocompatibility.
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Affiliation(s)
- Xuan Yi
- Key Laboratory of Polymer Ecomaterials, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, P. R. China.
- Jilin Biomedical Polymers Engineering Laboratory, Changchun 130022, P. R. China
| | - Pengqi Wan
- Key Laboratory of Polymer Ecomaterials, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, P. R. China.
- Jilin Biomedical Polymers Engineering Laboratory, Changchun 130022, P. R. China
| | - Wei Shen
- School of Pharmacy, Anhui University of Chinese Medicine, Hefei 230012, P. R. China
| | - Xiaonong Zhang
- Key Laboratory of Polymer Ecomaterials, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, P. R. China.
- Jilin Biomedical Polymers Engineering Laboratory, Changchun 130022, P. R. China
| | - Peng Zhang
- Key Laboratory of Polymer Ecomaterials, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, P. R. China.
- Jilin Biomedical Polymers Engineering Laboratory, Changchun 130022, P. R. China
| | - Chunsheng Xiao
- Key Laboratory of Polymer Ecomaterials, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, P. R. China.
- Jilin Biomedical Polymers Engineering Laboratory, Changchun 130022, P. R. China
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18
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Hu C, Ji H, Gong Y, Yang X, Jia Y, Liu Y, Ji G, Wang X, Wang M. Wet-adhesive γ-PGA/ε-PLL hydrogel loaded with EGF for tracheal epithelial injury repair. J Mater Chem B 2023; 11:8666-8678. [PMID: 37622289 DOI: 10.1039/d3tb01550e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/26/2023]
Abstract
Following the global COVID-19 pandemic, the incidence of tracheal epithelial injury is increasing. However, the repair of tracheal epithelial injury remains a challenge due to the slow renewal rate of tracheal epithelial cells (TECs). In traditional nebulized inhalation treatments, drugs are enriched in the lungs or absorbed into the blood, reducing drug concentration at the tracheal injury site. In this study, we prepared an epidermal growth factor (EGF)-loaded gamma-polyglutamic acid (γ-PGA)/epsilon-poly-L-lysine (ε-PLL) (PP) hydrogel (EGF@PP) to promote the repair of tracheal epithelial injury. Epidermal growth factor promotes the proliferation of TECs and enhances vascularization, thereby accelerating injury repair. The PP hydrogel exhibits outstanding wet adhesion, slow drug release, and antibacterial and anti-inflammatory properties, making it suitable for application in the airways and creating an environment conducive to epithelial repair. Here, we established a rabbit model of tracheal injury using a laser to destroy the tracheal epithelium and delivered EGF@PP powder to the injury site under fiberoptic bronchoscopy guidance. Our findings revealed that this was an effective therapeutic strategy for accelerating the repair of tracheal epithelial injury.
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Affiliation(s)
- Chuang Hu
- Department of Thoracic Surgery, Shanghai Key Laboratory of Tissue Engineering, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200001, China.
| | - Haoran Ji
- Department of Thoracic Surgery, Shanghai Key Laboratory of Tissue Engineering, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200001, China.
| | - Yan Gong
- Department of Thoracic Surgery, Shanghai Key Laboratory of Tissue Engineering, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200001, China.
| | - Xuhui Yang
- Department of Thoracic Surgery, Shanghai Key Laboratory of Tissue Engineering, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200001, China.
| | - Yunxuan Jia
- Shanghai Chest Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200001, China
| | - Yuanhao Liu
- Department of Thoracic Surgery, Shanghai Key Laboratory of Tissue Engineering, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200001, China.
| | - Guangyu Ji
- Department of Thoracic Surgery, Shanghai Key Laboratory of Tissue Engineering, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200001, China.
| | - Xiansong Wang
- Department of Thoracic Surgery, Shanghai Key Laboratory of Tissue Engineering, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200001, China.
| | - Mingsong Wang
- Department of Thoracic Surgery, Shanghai Key Laboratory of Tissue Engineering, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200001, China.
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Alkhouri N, Xia W, Ashley P, Young A. The effect of varying monocalcium phosphate and polylysine levels on dental composite properties. J Mech Behav Biomed Mater 2023; 145:106039. [PMID: 37499523 DOI: 10.1016/j.jmbbm.2023.106039] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2023] [Revised: 07/20/2023] [Accepted: 07/21/2023] [Indexed: 07/29/2023]
Abstract
OBJECTIVES The aim was to quantify effects of polylysine (PLS, 2 or 5 wt%) and monocalcium phosphate (MCP, 4 or 8 wt%) on properties of dental composites. METHODS Light-activated, lower surface polymerisation kinetics versus sample depth (1-4 mm) of 4 formulations were quantified using ATR-FTIR. Water sorption and solubility (at 1 week) were assessed following ISO/4049. PLS release (over 1 month) and biaxial flexural strength (over 6 months) of fully-cured, water-immersed, 1 mm thick discs were determined. Surface mineral precipitation, following immersion in simulated body fluid (SBF), was assessed by SEM. Z250 was used as a conventional composite comparator. RESULTS With 40s light exposure, increasing depth (from 1 to 4 mm) led to enhanced delay before polymerisation (from 3 to 17s) and decreased final conversion (72-66%) irrespective of PLS and MCP level. Increasing PLS and MCP raised solubility (4-13 μg/mm3). Water sorption (between 32 and 55 μg/mm3) and final PLS release (8-13% of disc content) were raised primarily by increasing PLS. Higher PLS also reduced strength. Strength reached minimum values (69-94 MPa) at 3 months. Surface mineral deposition was enhanced by increased MCP. For Z250, polymerisation delays (3-6s) and final conversions (55-54%) at 1-4 mm depth, solubility (0 μg/mm3), water sorption (16 μg/mm3) and strength (180 MPa) were all significantly different. CONCLUSION Delay time increased whilst final conversion decreased with thicker samples. Higher PLS enhances its percentage release, but lower level is required to keep water sorption, solubility and mechanical properties within ISO 4049 recommendations. Doubling MCP raises solubility and enhances minerals reprecipitation with minimal mechanical property compromise.
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Affiliation(s)
- Nabih Alkhouri
- Department of Biomaterials and Tissue Engineering, UCL Eastman Dental Institute, London, NW3 2QG, UK.
| | - Wendy Xia
- Department of Biomaterials and Tissue Engineering, UCL Eastman Dental Institute, London, NW3 2QG, UK
| | - Paul Ashley
- Department of Paediatric Dentistry, UCL Eastman Dental Institute, London, WC1E 6DE, UK
| | - Anne Young
- Department of Biomaterials and Tissue Engineering, UCL Eastman Dental Institute, London, NW3 2QG, UK
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20
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Salehirozveh M, Kure Larsen AK, Stojmenovic M, Thei F, Dong M. In-situ PLL-g-PEG Functionalized Nanopore for Enhancing Protein Characterization. Chem Asian J 2023; 18:e202300515. [PMID: 37497831 DOI: 10.1002/asia.202300515] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2023] [Revised: 07/03/2023] [Indexed: 07/28/2023]
Abstract
Single-molecule nanopore detection technology has revolutionized proteomics research by enabling highly sensitive and label-free detection of individual proteins. Herein, we designed a small, portable, and leak-free flowcell made of PMMA for nanopore experiments. In addition, we developed an in situ functionalizing PLL-g-PEG approach to produce non-sticky nanopores for measuring the volume of diseases-relevant biomarker, such as the Alpha-1 antitrypsin (AAT) protein. The in situ functionalization method allows continuous monitoring, ensuring adequate functionalization, which can be directly used for translocation experiments. The functionalized nanopores exhibit improved characteristics, including an increased nanopore lifetime and enhanced translocation events of the AAT proteins. Furthermore, we demonstrated the reduction in the translocation event's dwell time, along with an increase in current blockade amplitudes and translocation numbers under different voltage stimuli. The study also successfully measures the single AAT protein volume (253 nm3 ), which closely aligns with the previously reported hydrodynamic volume. The real-time in situ PLL-g-PEG functionalizing method and the developed nanopore flowcell hold great promise for various nanopores applications involving non-sticky single-molecule characterization.
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Affiliation(s)
- Mostafa Salehirozveh
- Department Of Physics And Astronomy, University of Bologna, Bologna, Italy
- Elements srl, Cesena, Italy
| | - Anne-Kathrine Kure Larsen
- Interdisciplinary Nanoscience Center (iNANO), Aarhus University, Aarhus, Denmark
- Sino-Danish Center for Education and Research, Aarhus, Denmark
- University of the Chinese Academy of Sciences, Beijing, China
| | | | | | - Mingdong Dong
- Interdisciplinary Nanoscience Center (iNANO), Aarhus University, Aarhus, Denmark
- Department of Biology - Center for Electromicrobiology, Aarhus University, Aarhus, Denmark
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21
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Sundaran S, Kok LC, Chang HY. Fabrication and in vitroevaluation of photo cross-linkable silk fibroin-epsilon-poly-L-lysine hydrogel for wound repair. Biomed Mater 2023; 18:055021. [PMID: 37567188 DOI: 10.1088/1748-605x/acef86] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2023] [Accepted: 08/10/2023] [Indexed: 08/13/2023]
Abstract
An optimal wound-healing hydrogel requires effective antibacterial properties and a favorable cell adhesion and proliferation environment. AlthoughBombyx morisilk fibroin (SF) possesses inherent wound-healing properties, it lacks these essential qualities. This study aimed to fabricate a novel photo-polymerizable hydrogel by utilizing SF's wound-healing efficiency and the epsilon-poly-L-lysine (EPL) antimicrobial activity. The SF was modified with three different concentrations of glycidyl methacrylate (GMA) to obtain SF-GMA(L), SF-GMA(M), and SF-GMA(H). A methacrylated EPL (EPL-GMA) was also produced. Then, SF-GMA was mixed with EPL-GMA to produce photo-crosslinkable SF-GMA-EPL hydrogels. The SF-GMA(L)-EPL, SF-GMA(M)-EPL, and SF-GMA(H)-EPL hydrogels, fabricated with 20% EPL-GMA, demonstrated maximum antimicrobial activity and mammalian cell adhesion ability. The hydroxyl radical (•OH) scavenging efficiency of the hydrogels was tested and shown to be between 69% and 74%. These hydrogels also exhibited 60% efficiency in removing bacterial lipopolysaccharides. The water absorption ability of the hydrogels was consistent with the size of their internal pores. The hydrogels exhibited a slow degradation fashion, and their degradation products appeared cytocompatible. Finally, the elastomeric properties of the hydrogels were determined, and a storage modulus (G') of 300-600 Pa was demonstrated. In conclusion, the hydrogels created in this study possess excellent biological and physical properties to support wound healing.
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Affiliation(s)
- Sneha Sundaran
- Institute of Molecular Medicine, National Tsing Hua University, Hsin Chu, Taiwan
| | - Li-Ching Kok
- Institute of Molecular Medicine, National Tsing Hua University, Hsin Chu, Taiwan
| | - Hwan-You Chang
- Institute of Molecular Medicine, National Tsing Hua University, Hsin Chu, Taiwan
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22
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Lang A, Lan W, Gu Y, Wang Z, Xie J. Effects of ε- polylysine and chitooligosaccharide Maillard reaction products on quality of refrigerated sea bass fillets. J Sci Food Agric 2023; 103:152-163. [PMID: 35848059 DOI: 10.1002/jsfa.12125] [Citation(s) in RCA: 4] [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] [Received: 05/11/2022] [Revised: 07/06/2022] [Accepted: 07/18/2022] [Indexed: 06/15/2023]
Abstract
BACKGROUND The Maillard reaction is a promising and safe method for obtaining chitooligosaccharide conjugates with proteins or peptides as food preservatives. This study aims to investigate the moisture state, physicochemical properties, and shelf-life of sea bass fillets treated with ε-polylysine (ε-PL) and chitooligosaccharides (COS), which are Maillard reaction products (LC-MRPs), during refrigerated storage. RESULTS The results of microbiological analysis and confocal laser scanning microscope (CLSM) revealed that LC-MRPs could retard microbial growth effectively. Compared with control, other treated groups could strongly retard the increase in the thiobarbituric acid (TBA) value, the K-value and the total volatile basic nitrogen (TVB-N) value, and also inhibited the softening of texture and the accumulation of biogenic amines in fish. The results of low-field nuclear magnetic resonance (LF-NMR) and magnetic resonance imaging (MRI) indicate that LC-MRPs could delay the water migration of fillets and increase water holding capacity (WHC). Through sensory evaluation, the application of LC-MRPs increased the shelf-life of refrigerated sea bass fillets for another 9 days. CONCLUSION Maillard reaction products derived from chitooligosaccharides and ε-polylysine have strong potential for preserving sea bass. © 2022 Society of Chemical Industry.
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Affiliation(s)
- Ai Lang
- College of Food Science and Technology, Shanghai Ocean University, Shanghai, China
| | - Weiqing Lan
- College of Food Science and Technology, Shanghai Ocean University, Shanghai, China
- Shanghai Aquatic Products Processing and Storage Engineering Technology Research Center, Shanghai, China
- National Experimental Teaching Demonstration Center for Food Science and Engineering, Shanghai Ocean University, Shanghai, China
| | - Yongji Gu
- College of Food Science and Technology, Shanghai Ocean University, Shanghai, China
| | - Zhicheng Wang
- College of Food Science and Technology, Shanghai Ocean University, Shanghai, China
| | - Jing Xie
- College of Food Science and Technology, Shanghai Ocean University, Shanghai, China
- Shanghai Aquatic Products Processing and Storage Engineering Technology Research Center, Shanghai, China
- National Experimental Teaching Demonstration Center for Food Science and Engineering, Shanghai Ocean University, Shanghai, China
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23
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Ahmed H, Khan EA, Stokke BT. Microfluidic dual picoinjection based encapsulation of hemoglobin in alginate microcapsules reinforced by a poly(L-lysine)- g-poly(ethylene glycol). Soft Matter 2022; 19:69-79. [PMID: 36468540 DOI: 10.1039/d2sm01045c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/17/2023]
Abstract
Hemoglobin (Hb) encapsulation inside polysaccharide hydrogels has been considered a possible red blood cell (RBC) surrogate in transfusiology. Here we report on the microfluidic dual picoinjection assisted synthesis of Hb encapsulated alginate-poly(L-lysine)-g-poly(ethylene glycol) beads. This process is realized by the on-chip injections of blended Hb alginate solutions in emulsified aqueous calcium chloride (CaCl2) droplets followed by a subsequent injection of an aqueous PLL-g-PEG into each emulsified aqueous droplet. The proposed fabrication approach was realized using a flow-focusing and two picoinjection sites in a single PDMS device. Aqueous CaCl2 solution was emulsified and infused with Hb-alginate solution as the squeezed droplet passed through the first picoinjection site. The injection of PLL-g-PEG to reinforce the microgel and minimize the protein leaching was realized in the second picoinjection site located downstream from the first in the same microfluidic channel. In this process, monodisperse Hb-alginate-PLL-g-PEG particles with a diameter around the size of RBCs (9 μm) were obtained with around 80% of the 7.5 mg ml-1 Hb included in the injected aqueous alginate retaining in the obtained microparticles. Microparticles with Hb loading (32.8 pg per bead) and retention (28.8 pg per bead) over a week of storage at 4 °C are in accordance with the average amount of Hb per RBC. The Hb-alginate-PLL-g-PEG microbeads fabricated in the size range of RBCs are significant for further exploration.
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Affiliation(s)
- Husnain Ahmed
- Biophysics and Medical Technology, Department of Physics, NTNU, Norwegian University of Science and Technology, NO-7491 Trondheim, Norway.
| | | | - Bjørn Torger Stokke
- Biophysics and Medical Technology, Department of Physics, NTNU, Norwegian University of Science and Technology, NO-7491 Trondheim, Norway.
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24
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Wei X, Liu C, Li Z, Sun Q, Zhang X, Li Y, Zhang W, Shi J, Zhai X, Zhang D, Zou X. Fabrication of a label-free electrochemical cell-based biosensor for toxicity assessment of thiram. Chemosphere 2022; 307:135960. [PMID: 35961445 DOI: 10.1016/j.chemosphere.2022.135960] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [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: 04/15/2022] [Revised: 07/29/2022] [Accepted: 08/02/2022] [Indexed: 06/15/2023]
Abstract
Thiram has been widely used in agriculture and may invades the food chain, posing a threat to human health. In this research, a label-free electrochemical cell-based biosensor was presented for in vitro toxicity assessment of thiram. HepG2 cells were cultured on poly-l-lysine@gold nano-flowers functionalized indium tin oxide coated glass electrode (PLL@AuNFs/ITO) to serve as biorecognition elements. AuNFs were electrodeposited on ITO to provide an enlarged specific surface area and benefited the output signal amplification. PLL was selected as an effective biocompatible coating material to facilitate cell adhesion and proliferation, thereby realizing one-step recording of electrochemical signals from thiram-treated cells. With the aid of the differential pulse voltammetry method, the fabricated biosensor was applied to assess the cytotoxicity of thiram. Results showed that the cytotoxicity measured by the fabricated biosensor exhibited a linear relationship related to thiram concentration ranging from 5 to 50 μM with a detection limit of 2.23 μM. The IC50 of thiram obtained by the biosensor was 29.5 μM, which was close to that of conventional MTT assay (30.8 μM). The effects of thiram on HepG2 cells were also investigated via SEM and flow cytometry. Meanwhile, the proposed biosensor was used to evaluate the toxicity of thiram in fruit samples. Results indicated that the toxicity of thiram cannot be ignored even at a low residual concentration in food (≤5 mg/kg). In conclusion, the developed sensor showed excellent sensitivity, stability, and reliability, which provided a great capacity for the convenient toxicity evaluation of thiram residue in food.
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Affiliation(s)
- Xiaoou Wei
- School of Food and Biological Engineering, Jiangsu University, Zhenjiang, Jiangsu, 212013, PR China; International Joint Research Laboratory of Intelligent Agriculture and Agri-products Processing, Jiangsu University, Zhenjiang, Jiangsu, 212013, PR China
| | - Chao Liu
- School of Food and Biological Engineering, Jiangsu University, Zhenjiang, Jiangsu, 212013, PR China; International Joint Research Laboratory of Intelligent Agriculture and Agri-products Processing, Jiangsu University, Zhenjiang, Jiangsu, 212013, PR China
| | - Zhihua Li
- School of Food and Biological Engineering, Jiangsu University, Zhenjiang, Jiangsu, 212013, PR China; International Joint Research Laboratory of Intelligent Agriculture and Agri-products Processing, Jiangsu University, Zhenjiang, Jiangsu, 212013, PR China
| | - Quancai Sun
- School of Food and Biological Engineering, Jiangsu University, Zhenjiang, Jiangsu, 212013, PR China
| | - Xinai Zhang
- School of Food and Biological Engineering, Jiangsu University, Zhenjiang, Jiangsu, 212013, PR China; International Joint Research Laboratory of Intelligent Agriculture and Agri-products Processing, Jiangsu University, Zhenjiang, Jiangsu, 212013, PR China
| | - Yanxiao Li
- School of Food and Biological Engineering, Jiangsu University, Zhenjiang, Jiangsu, 212013, PR China
| | - Wen Zhang
- School of Food and Biological Engineering, Jiangsu University, Zhenjiang, Jiangsu, 212013, PR China; International Joint Research Laboratory of Intelligent Agriculture and Agri-products Processing, Jiangsu University, Zhenjiang, Jiangsu, 212013, PR China
| | - Jiyong Shi
- School of Food and Biological Engineering, Jiangsu University, Zhenjiang, Jiangsu, 212013, PR China; International Joint Research Laboratory of Intelligent Agriculture and Agri-products Processing, Jiangsu University, Zhenjiang, Jiangsu, 212013, PR China
| | - Xiaodong Zhai
- School of Food and Biological Engineering, Jiangsu University, Zhenjiang, Jiangsu, 212013, PR China; International Joint Research Laboratory of Intelligent Agriculture and Agri-products Processing, Jiangsu University, Zhenjiang, Jiangsu, 212013, PR China
| | - Di Zhang
- School of Food and Biological Engineering, Jiangsu University, Zhenjiang, Jiangsu, 212013, PR China; International Joint Research Laboratory of Intelligent Agriculture and Agri-products Processing, Jiangsu University, Zhenjiang, Jiangsu, 212013, PR China.
| | - Xiaobo Zou
- School of Food and Biological Engineering, Jiangsu University, Zhenjiang, Jiangsu, 212013, PR China; International Joint Research Laboratory of Intelligent Agriculture and Agri-products Processing, Jiangsu University, Zhenjiang, Jiangsu, 212013, PR China.
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25
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Nguyen Le NM, Zsák S, Le-Vinh B, Friedl JD, Kali G, Knoll P, Seitter HW, Koschak A, Bernkop-Schnürch A. Charge-Converting Nanoemulsions as Promising Retinal Drug and Gene Delivery Systems. ACS Appl Mater Interfaces 2022; 14:44981-44991. [PMID: 36125912 PMCID: PMC9542710 DOI: 10.1021/acsami.2c11649] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [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: 06/30/2022] [Accepted: 09/08/2022] [Indexed: 05/31/2023]
Abstract
AIM This study aimed to develop phosphatase-responsive ζ potential converting nanocarriers utilizing polyphosphate-coated cell-penetrating peptide (CPP)-decorated nanoemulsions (NEs) as a novel gene delivery system to retinal cells. METHODS Poly-l-lysine (PLL) was first conjugated with oleylamine (OA) only at its carboxylic end to form the amphiphilic PLL-oleylamine (PLOA) conjugate. Afterward, NEs were loaded with PLOA prior to being coated with tripolyphosphate (TPP) to generate PLOA/TPP NEs. A plasmid containing a reporter gene for green fluorescent protein plasmid (pGFP) was complexed with cationic surfactants forming hydrophobic ion pairs that were loaded in the oily core of NEs. Phosphate removal, ζ potential conversion, and cytotoxicity of the system were evaluated. Cellular uptake and transfection efficiency were investigated in 661W photoreceptor-like cells via microscopic analysis, fluorescence spectroscopy, and flow cytometry. RESULTS Dephosphorylation of PLOA/TPP NEs triggered by alkaline phosphatase (ALP) resulted in the exposure of positive amine groups on the surface of NE droplets and a notable conversion of the ζ potential from -22.4 to +8.5 mV. Cellular uptake of PLOA/TPP NEs performed on 661W photoreceptor-like cells showed a 3-fold increase compared to control NEs. Furthermore, PLOA/TPP NEs also showed low cytotoxicity and high transfection efficacy with ∼50% of cells transfected. CONCLUSIONS Polyphosphate-coated CPP-decorated NEs triggered by ALP could be a promising nanosystem to efficiently deliver drugs and genetic materials to photoreceptor-like cells and other retinal cells for potential treatments of retinal diseases.
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Affiliation(s)
- Nguyet-Minh Nguyen Le
- Center
for Chemistry and Biomedicine, Department of Pharmaceutical Technology,
Institute of Pharmacy, University of Innsbruck, Innrain 80/82, 6020 Innsbruck, Austria
| | - Sarah Zsák
- Center
for Chemistry and Biomedicine, Department of Pharmacology and Toxicology,
Institute of Pharmacy, University of Innsbruck, Innrain 80/82, 6020 Innsbruck, Austria
| | - Bao Le-Vinh
- Center
for Chemistry and Biomedicine, Department of Pharmaceutical Technology,
Institute of Pharmacy, University of Innsbruck, Innrain 80/82, 6020 Innsbruck, Austria
| | - Julian David Friedl
- Center
for Chemistry and Biomedicine, Department of Pharmaceutical Technology,
Institute of Pharmacy, University of Innsbruck, Innrain 80/82, 6020 Innsbruck, Austria
| | - Gergely Kali
- Center
for Chemistry and Biomedicine, Department of Pharmaceutical Technology,
Institute of Pharmacy, University of Innsbruck, Innrain 80/82, 6020 Innsbruck, Austria
| | - Patrick Knoll
- Center
for Chemistry and Biomedicine, Department of Pharmaceutical Technology,
Institute of Pharmacy, University of Innsbruck, Innrain 80/82, 6020 Innsbruck, Austria
| | - Hartwig Wolfram Seitter
- Center
for Chemistry and Biomedicine, Department of Pharmacology and Toxicology,
Institute of Pharmacy, University of Innsbruck, Innrain 80/82, 6020 Innsbruck, Austria
| | - Alexandra Koschak
- Center
for Chemistry and Biomedicine, Department of Pharmacology and Toxicology,
Institute of Pharmacy, University of Innsbruck, Innrain 80/82, 6020 Innsbruck, Austria
| | - Andreas Bernkop-Schnürch
- Center
for Chemistry and Biomedicine, Department of Pharmaceutical Technology,
Institute of Pharmacy, University of Innsbruck, Innrain 80/82, 6020 Innsbruck, Austria
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26
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Lee M, Rice-Boucher PJ, Collins LT, Wagner E, Aulisa L, Hughes J, Curiel DT. A Novel Piggyback Strategy for mRNA Delivery Exploiting Adenovirus Entry Biology. Viruses 2022; 14:v14102169. [PMID: 36298724 PMCID: PMC9608319 DOI: 10.3390/v14102169] [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: 08/26/2022] [Revised: 09/20/2022] [Accepted: 09/22/2022] [Indexed: 12/01/2022] Open
Abstract
Molecular therapies exploiting mRNA vectors embody enormous potential, as evidenced by the utility of this technology for the context of the COVID-19 pandemic. Nonetheless, broad implementation of these promising strategies has been restricted by the limited repertoires of delivery vehicles capable of mRNA transport. On this basis, we explored a strategy based on exploiting the well characterized entry biology of adenovirus. To this end, we studied an adenovirus-polylysine (AdpL) that embodied "piggyback" transport of the mRNA on the capsid exterior of adenovirus. We hypothesized that the efficient steps of Ad binding, receptor-mediated entry, and capsid-mediated endosome escape could provide an effective pathway for transport of mRNA to the cellular cytosol for transgene expression. Our studies confirmed that AdpL could mediate effective gene transfer of mRNA vectors in vitro and in vivo. Facets of this method may offer key utilities to actualize the promise of mRNA-based therapeutics.
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Affiliation(s)
- Myungeun Lee
- Division of Cancer Biology, Department of Radiation Oncology, School of Medicine, Washington University in St. Louis, St. Louis, MO 63110, USA
| | - Paul J. Rice-Boucher
- Division of Cancer Biology, Department of Radiation Oncology, School of Medicine, Washington University in St. Louis, St. Louis, MO 63110, USA
- Department of Biomedical Engineering, McKelvey School of Engineering, Washington University in Saint Louis, St. Louis, MO 63130, USA
| | - Logan Thrasher Collins
- Division of Cancer Biology, Department of Radiation Oncology, School of Medicine, Washington University in St. Louis, St. Louis, MO 63110, USA
- Department of Biomedical Engineering, McKelvey School of Engineering, Washington University in Saint Louis, St. Louis, MO 63130, USA
| | - Ernst Wagner
- Department of Chemistry and Pharmacy, Ludwig-Maximilians-University (LMU), 81377 Munich, Germany
| | - Lorenzo Aulisa
- GreenLight Biosciences, Inc., 200 Boston Ave. #3100, Medford, MA 02155, USA
| | - Jeffrey Hughes
- GreenLight Biosciences, Inc., 200 Boston Ave. #3100, Medford, MA 02155, USA
| | - David T. Curiel
- Division of Cancer Biology, Department of Radiation Oncology, School of Medicine, Washington University in St. Louis, St. Louis, MO 63110, USA
- Biologic Therapeutics Center, Department of Radiation Oncology, School of Medicine, Washington University in St. Louis, St. Louis, MO 63110, USA
- Correspondence: ; Tel.: +1-314-747-5443; Fax: +1-314-362-9790
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27
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Agarwal NP, Chandrasekhar S, Prakash PS, Joffroy K, Schmidt TL. Block Copolymer Micellization of DNA Origami Promotes Solubility in Organic Solvents. Langmuir 2022; 38:11650-11657. [PMID: 36103620 DOI: 10.1021/acs.langmuir.2c01508] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
The DNA origami technique allows the precise synthesis of complex, biocompatible nanomaterials containing small molecules, biomolecules, and inorganic nanoparticles. The negatively charged phosphates in the backbone make DNA highly water-soluble and require salts to shield its electrostatic repulsion. DNA origamis are therefore not soluble in most organic solvents. While this is not problematic for applications in biochemistry, biophysics, or nanomedicine, other potential applications, processes, and substrates are incompatible with saline solutions, which include the synthesis of many nanomaterials, and reactions in templated synthesis, the operation of nanoelectronic devices, or semiconductor fabrication. To overcome this limitation, we coated DNA origami with amphiphilic poly(ethylene glycol) polylysine block copolymers and transferred them into various organic solvents including chloroform, dichloromethane, acetone, or 1-propanol. Our approach maintains the shape of the nanostructures and protects functional elements bound to the structure, such as fluorophores, gold nanoparticles, or proteins. The DNA origami polyplex micellization (DOPM) strategy hence enables solubilization or a phase transfer of complex structures into various organic solvents, which significantly expands the use of DNA origami for a range of potential applications and technical processes.
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Affiliation(s)
- Nayan P Agarwal
- Center for Advancing Electronics Dresden (cfaed), Technische Universität Dresden, 01062 Dresden, Germany
- Department of Mechanical Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
| | | | | | - Kristin Joffroy
- Center for Advancing Electronics Dresden (cfaed), Technische Universität Dresden, 01062 Dresden, Germany
| | - Thorsten L Schmidt
- Center for Advancing Electronics Dresden (cfaed), Technische Universität Dresden, 01062 Dresden, Germany
- Department of Physics, Kent State University, Kent, Ohio 44242, United States
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28
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Rao L, Liu Y, Zhou H. Significantly improved cell affinity of polydimethylsiloxane enabled by a surface-modified strategy with chemical coupling. J Mater Sci Mater Med 2022; 33:66. [PMID: 36138160 PMCID: PMC9499886 DOI: 10.1007/s10856-022-06690-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/11/2022] [Accepted: 08/27/2022] [Indexed: 06/16/2023]
Abstract
Polydimethylsiloxane (PDMS) is a commonly used insulation/packaging material for implantable neural electrodes. Nevertheless, the PDMS-initiated tissue response would lead to the deterioration of the electrode performances post-implantation, owing to its intrinsic hydrophobic and cell-repellent surface. The conventional physical coatings by hydrophilic hydrogels or bioactive molecules are unable to maintain during the long-term implantation due to their low stability by physical adhesion. In this work, we first anchor both hydrophilic polyethylene glycol (PEG) and bioactive molecule poly-L-lysine (PLL) on the PDMS surface by chemical coupling to change the PDMS surface from hydrophobic and cell-repellent to hydrophilic and cell-adhesive. XPS tests indicate the chemically coupled modification layers are stable on the PDMS surface after experiencing a harsh rinse process. Contact angle measurements show that the use of PEG 600 with the moderate molecular weight results in the highest hydrophilicity for the resulting PDMS-PEG-PLL. PC12 cell evaluation results exhibit that the PDMS-PEG-PLL with PEG 600 leads to significantly larger cell adhesion area, more neurite number, and longer neurite length than the PDMS. The PDMS-PEG-PLL with PEG 600 featuring stable modification layers, high hydrophilicity, and superior cell affinity has great potential in stabilizing the neural electrode-tissue interface for the long-term implantation. Graphical abstract.
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Affiliation(s)
- Li Rao
- Department of Geriatrics, Renmin Hospital of Wuhan University, Wuhan, 430060, China
| | - Yuqin Liu
- Key Laboratory of Chemical Biology and Molecular Engineering of Ministry of Education, Institute of Molecular Science, Shanxi University, Taiyuan, 030006, China
| | - Haihan Zhou
- Key Laboratory of Chemical Biology and Molecular Engineering of Ministry of Education, Institute of Molecular Science, Shanxi University, Taiyuan, 030006, China.
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29
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Huang H, Zhang C, Zhou J, Wei D, Ma T, Guo W, Liu X, Li S, Deng Y. Label-Free Aptasensor for Detection of Fipronil Based on Black Phosphorus Nanosheets. Biosensors 2022; 12:bios12100775. [PMID: 36290913 PMCID: PMC9599224 DOI: 10.3390/bios12100775] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/23/2022] [Revised: 09/04/2022] [Accepted: 09/15/2022] [Indexed: 12/03/2022]
Abstract
A label-free fipronil aptasensor was built based on Polylysine-black phosphorus nanosheets composition (PLL-BPNSs) and Au nanoparticles (AuNPs). A PLL-BP modified glassy carbon electrode (GCE) was fabricated by combining BP NSs and PLL, which included a considerable quantity of -NH2. Au nanoparticles (AuNPs) were placed onto the GCE, and PLL-BPNSs bonded to Au NPs firmly by assembling. The thiolated primers were then added and fixed using an S-Au bond, and competitive binding of the fipronil aptamer was utilized for fipronil quantitative assessment. The sensor’s performance was evaluated using differential pulse voltammetry (DPV) method. The linear equation is ΔI (μA) = 13.04 logC + 22.35, while linear correlation coefficient R2 is 0.998, and detection limit is 74 pg/mL (0.17 nM) when the concentration of fipronil is 0.1 ng/mL–10 μg/mL. This aptasensor can apply to quantitative detection of fipronil.
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Affiliation(s)
- Hao Huang
- Hunan Key Laboratory of Biomedical Nanomaterials and Devices, Hunan University of Technology, Zhuzhou 412007, China
| | - Chuanxiang Zhang
- College of Packing and Materials Engineering, Hunan University of Technology, Zhuzhou 412007, China
| | - Jie Zhou
- Hunan Key Laboratory of Biomedical Nanomaterials and Devices, Hunan University of Technology, Zhuzhou 412007, China
| | - Dan Wei
- Hunan Key Laboratory of Biomedical Nanomaterials and Devices, Hunan University of Technology, Zhuzhou 412007, China
| | - Tingting Ma
- Hunan Key Laboratory of Biomedical Nanomaterials and Devices, Hunan University of Technology, Zhuzhou 412007, China
| | - Wenfei Guo
- Hunan Key Laboratory of Biomedical Nanomaterials and Devices, Hunan University of Technology, Zhuzhou 412007, China
| | - Xueying Liu
- Hunan Key Laboratory of Biomedical Nanomaterials and Devices, Hunan University of Technology, Zhuzhou 412007, China
| | - Song Li
- Hunan Key Laboratory of Biomedical Nanomaterials and Devices, Hunan University of Technology, Zhuzhou 412007, China
- Correspondence: (S.L.); (Y.D.)
| | - Yan Deng
- Hunan Key Laboratory of Biomedical Nanomaterials and Devices, Hunan University of Technology, Zhuzhou 412007, China
- Correspondence: (S.L.); (Y.D.)
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30
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Wei S, Jiao D, Xing W. A rapid method for isolation of bacterial extracellular vesicles from culture media using epsilon-poly-L–lysine that enables immunological function research. Front Immunol 2022; 13:930510. [PMID: 36032173 PMCID: PMC9411643 DOI: 10.3389/fimmu.2022.930510] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2022] [Accepted: 07/21/2022] [Indexed: 11/24/2022] Open
Abstract
Both Gram-negative and Gram-positive bacteria can release vesicle-like structures referred to as bacterial extracellular vesicles (BEVs), which contain various bioactive compounds. BEVs play important roles in the microbial community interactions and host-microbe interactions. Markedly, BEVs can be delivered to host cells, thus modulating the development and function of the innate immune system. To clarify the compositions and biological functions of BEVs, we need to collect these vesicles with high purity and bioactivity. Here we propose an isolation strategy based on a broad-spectrum antimicrobial epsilon-poly-L-lysine (ϵ-PL) to precipitate BEVs at a relatively low centrifugal speed (10,000 × g). Compared to the standard ultracentrifugation strategy, our method can enrich BEVs from large volumes of media inexpensively and rapidly. The precipitated BEVs can be recovered by adjusting the pH and ionic strength of the media, followed by an ultrafiltration step to remove ϵ-PL and achieve buffer exchange. The morphology, size, and protein composition of the ϵ-PL-precipitated BEVs are comparable to those purified by ultracentrifugation. Moreover, ϵ-PL-precipitated BEVs retained the biological activity as observed by confocal microscopy studies. And THP-1 cells stimulated with these BEVs undergo marked reprogramming of their transcriptome. KEGG analysis of the differentially expressed genes showed that the signal pathways of cellular inflammatory response were significantly activated. Taken together, we provide a new method to rapidly enrich BEVs with high purity and bioactivity, which has the potential to be applied to BEVs-related immune response studies.
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Affiliation(s)
- Shujin Wei
- School of Medicine, Tsinghua University, Beijing, China
| | - Dian Jiao
- School of Life Sciences, Tsinghua University, Beijing, China
| | - Wanli Xing
- School of Medicine, Tsinghua University, Beijing, China
- *Correspondence: Wanli Xing,
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31
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Cui H, Zhang L, Zeng S, Wang Y, Li Z, Wang J, Chen Q. Charge-Reversible Pro-Ribonuclease Enveloped in Virus-like Synthetic Nanocapsules for Systemic Treatment of Intractable Glioma. ACS Appl Mater Interfaces 2022; 14:30493-30506. [PMID: 35657733 DOI: 10.1021/acsami.2c03763] [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] [Indexed: 06/15/2023]
Abstract
We have tailored multifaceted chemistries into the manufacture of artificial virus-like delivery vehicles mimicking viral "intelligent" transportation pathways through sequential biological barriers; these vehicles can acquire the ability to dynamically "program transfer" to their target sites. To accomplish this, we created anionic pro-proteins, which facilitate charge reversal when subject to acidic endosomal pH; in this way, carboxylation reactions are performed on proteins with amine-reactive cis-aconitic anhydride. Electrostatic associations then initiate the envelopment of these pro-proteins into multilayered nanoarchitectural vehicles composed of multiple-segmental block copolycationic cyclic Arg-Gly-Asp (RGD)-poly(ethylene glycol)(PEG)-GPLGVRG-polylysine(thiol). Therefore, upon the pro-proteins' initial binding to the tumors via the protruding RGD ligands, the bio-inert PEG surroundings are detached through the enzymolysis of the intermediate GPLGVRG linkage by tumor-enriched matrix metalloproteinases, unveiling the cationic polylysine palisade and imparting intimate affinities to the anionic cytomembranes of the targeted tumors. Essentially, through their active endocytosis into the subcellular endosomal compartments, the pro-proteins are made capable of retrieving the original amine groups through a charge reversal decarboxylation process, consequently eliciting augmented charge densities (charge nonstoichiometric protein@polylysine(disulfide)) to disrupt the anionic endosomal membranes to facilitate translocation into the cytosol. Eventually, the active protein payloads can be liberated from nonstoichiometric protein@polylysine(thiol) by the disassembly of polylysine palisade upon the cleavage of disulfide crosslinking in response to the very high level of glutathione in the cytosol, thereby contributing toward extreme cytotoxic potency. Hence, our elaborated virus-mimicking platform has demonstrated potent antitumor efficacy through the systemic administration of ribonucleases, which will consequently lead to an innovative new therapeutic method by which proteins could reach intracellular targets.
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Affiliation(s)
- Hongyan Cui
- State Key Laboratory of Fine Chemicals, Dalian University of Technology, No. 2 Linggong Road, Dalian 116024, China
- School of Bioengineering, Dalian University of Technology, No. 2 Linggong Road, Dalian 116024, China
| | - Liuwei Zhang
- School of Bioengineering, Dalian University of Technology, No. 2 Linggong Road, Dalian 116024, China
| | - Shuang Zeng
- School of Bioengineering, Dalian University of Technology, No. 2 Linggong Road, Dalian 116024, China
| | - Yu Wang
- School of Bioengineering, Dalian University of Technology, No. 2 Linggong Road, Dalian 116024, China
| | - Zhen Li
- College of Pharmacy, Dalian Medical University, No. 9 West Section Lvshun South Road, Dalian 116044, China
| | - Jingyun Wang
- State Key Laboratory of Fine Chemicals, Dalian University of Technology, No. 2 Linggong Road, Dalian 116024, China
- School of Bioengineering, Dalian University of Technology, No. 2 Linggong Road, Dalian 116024, China
| | - Qixian Chen
- State Key Laboratory of Fine Chemicals, Dalian University of Technology, No. 2 Linggong Road, Dalian 116024, China
- School of Bioengineering, Dalian University of Technology, No. 2 Linggong Road, Dalian 116024, China
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32
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Zhang W, Zeng QM, Tang RC. Gallic acid functionalized polylysine for endowing cotton fiber with antibacterial, antioxidant, and drug delivery properties. Int J Biol Macromol 2022; 216:65-74. [PMID: 35788001 DOI: 10.1016/j.ijbiomac.2022.06.186] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2022] [Revised: 06/20/2022] [Accepted: 06/28/2022] [Indexed: 11/20/2022]
Abstract
In recent years, the serious influence of infectious diseases on public health and economy development has raised global awareness of the importance of medical textiles for preventing and curing injuries and diseases. The application of biomass molecules is a feasible and sustainable approach to design multipurpose medical materials. In this work, a novel cotton fiber with antibacterial, antioxidant, and drug delivery properties was prepared using gallic acid functionalized polylysine (GA-PL). GA-PL was synthesized by immobilizing GA onto PL using the carbodiimide coupling method. The content of GA immobilized onto PL was 117.9 mg/g. The as-prepared GA-PL was grafted onto oxidized cotton by means of the Schiff base reaction between the amino groups of GA-PL and the aldehyde groups of oxidized cotton. The content of GA-PL grafted onto cotton fiber was 205.1 mg/g. GA-PL grafted cotton fiber exhibited not only durable antibacterial and antioxidant activities but also good drug loading and releasing properties for acetylsalicylic acid. This work presents a novel, cleaner, and sustainable approach to prepare medical cotton fibers with bioactive and drug delivery properties.
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Affiliation(s)
- Wen Zhang
- College of Textile and Clothing Engineering, Soochow University, 178 East Ganjiang Road, Suzhou 215021, China; Jiangsu Engineering Research Center of Textile Dyeing and Printing for Energy Conservation, Discharge Reduction and Cleaner Production (ERC), Soochow University, 199 Renai Road, Suzhou 215123, China; China National Textile and Apparel Council Key Laboratory of Natural Dyes, Soochow University, 199 Renai Road, Suzhou 215123, China
| | - Qing-Min Zeng
- College of Textile and Clothing Engineering, Soochow University, 178 East Ganjiang Road, Suzhou 215021, China
| | - Ren-Cheng Tang
- College of Textile and Clothing Engineering, Soochow University, 178 East Ganjiang Road, Suzhou 215021, China; Jiangsu Engineering Research Center of Textile Dyeing and Printing for Energy Conservation, Discharge Reduction and Cleaner Production (ERC), Soochow University, 199 Renai Road, Suzhou 215123, China; China National Textile and Apparel Council Key Laboratory of Natural Dyes, Soochow University, 199 Renai Road, Suzhou 215123, China.
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33
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Xie T, Zhang Q, Zhang W, Feng S, Lin JM. Inkjet-Patterned Microdroplets as Individual Microenvironments for Adherent Single Cell Culture. Small 2022; 18:e2107992. [PMID: 35362237 DOI: 10.1002/smll.202107992] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [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: 12/23/2021] [Revised: 02/26/2022] [Indexed: 06/14/2023]
Abstract
Adhesion of single cells is the foundation of manifold cellular behaviors and life processes. However, investigating the function of a specific cell is still challenging due to deficiency of adhesion or interference from surrounding cells. Herein, an open microfluidic system is reported for culturing adherent single cells, implemented by a micrometer-scale droplet matrix on an inkjet-printed polylysine template. The target cells are isolated from any cell from other droplets, and their adhesion strength is determined to be comparable to conventional petri dishes via an in-situ investigation with a microfluidic extractor. On this proposed platform, isolated single cells are observed to display an entirely distinct spreading behavior featuring total absence of elongation, indicating drastic cell behavior change from their "singleness." This system has high versatility and compatibility for various assaying methods, assuring a promising potential in detailed single cell behavior and cell heterogeneity studies.
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Affiliation(s)
- Tianze Xie
- Department of Chemistry, Beijing Key Laboratory of Microanalytical Methods and Instrumentation, Key Laboratory of Bioorganic Phosphorus Chemistry and Chemical Biology (Ministry of Education), Tsinghua University, Beijing, 100084, P. R. China
| | - Qiang Zhang
- Department of Chemistry, Beijing Key Laboratory of Microanalytical Methods and Instrumentation, Key Laboratory of Bioorganic Phosphorus Chemistry and Chemical Biology (Ministry of Education), Tsinghua University, Beijing, 100084, P. R. China
| | - Weifei Zhang
- Division of Chemical Metrology and Analytical Science, National Institute of Metrology, N 3rd Ring Road E 18, Beijing, 100029, P. R. China
| | - Shuo Feng
- Department of Chemistry, Beijing Key Laboratory of Microanalytical Methods and Instrumentation, Key Laboratory of Bioorganic Phosphorus Chemistry and Chemical Biology (Ministry of Education), Tsinghua University, Beijing, 100084, P. R. China
| | - Jin-Ming Lin
- Department of Chemistry, Beijing Key Laboratory of Microanalytical Methods and Instrumentation, Key Laboratory of Bioorganic Phosphorus Chemistry and Chemical Biology (Ministry of Education), Tsinghua University, Beijing, 100084, P. R. China
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34
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Zhang X, Hou Z, Tian X, Wu D, Dai Q. Multi-omics reveals host metabolism associated with the gut microbiota composition in mice with dietary ε- polylysine. Food Funct 2022; 13:4069-4085. [PMID: 35315841 DOI: 10.1039/d1fo04227k] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
This study aimed to assess the influence of dietary supplementation of ε-polylysine on the gut microbiota and host nutrient metabolism, which is not systematically discussed by multi-omics analysis. A total of 40 mice were randomly divided into two groups exposed to either a basal diet (AIN-76A) or a basal diet with 150 ppm ε-polylysine. Fecal samples were collected for gut bacteria identification. Liver and plasma samples were collected for metabolomic and proteomic analyses. The results showed that ε-polylysine decreased the body weight of mice and affected the presence of certain types of intestinal microorganisms. The richness of the microbiota and number of phyla increased with age. ε-Polylysine affected the presence of genera and species, and either regulated or took part in the metabolism of energy, nitrogen, amino acids, lipids, carbohydrates, glycans, cofactors, and vitamins. The metabolite profiling showed that lipid and lipid-like molecules metabolites occupied the majority percent of plasma and liver metabolites. Additionally, ε-polylysine regulated the key role of metabolites and related metabolic enzymes in the metabolic pathways, especially phospholipid metabolism. In conclusion, dietary ε-polylysine improved the immunity of growing mice, and had a greater effect on the anabolism of nutrients in adult mice.
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Affiliation(s)
- Xuelei Zhang
- Institute of Bast Fiber Crops, Chinese Academy of Agricultural Sciences, Changsha 410205, China.
| | - Zhenping Hou
- Institute of Bast Fiber Crops, Chinese Academy of Agricultural Sciences, Changsha 410205, China.
| | - Xu Tian
- Institute of Bast Fiber Crops, Chinese Academy of Agricultural Sciences, Changsha 410205, China.
| | - Duanqin Wu
- Institute of Bast Fiber Crops, Chinese Academy of Agricultural Sciences, Changsha 410205, China.
| | - Qiuzhong Dai
- Institute of Bast Fiber Crops, Chinese Academy of Agricultural Sciences, Changsha 410205, China.
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35
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Wang C, Chen X, Jiang Y, Li N, Zhu P, Xu H. Facile and green synthesis of reduced graphene oxide/loofah sponge for Streptomyces albulus immobilization and ε-poly-l-lysine production. Bioresour Technol 2022; 349:126534. [PMID: 34896528 DOI: 10.1016/j.biortech.2021.126534] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [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: 10/19/2021] [Revised: 12/05/2021] [Accepted: 12/06/2021] [Indexed: 06/14/2023]
Abstract
Facile and green fabrication of reduced graphene oxide on loofah sponge (rGOLS) carrier was applied for cell immobilization of ε-Poly-l-lysine (ε-PL) production. Due to surface properties including large specific surface area, high polarity, and low interaction energy, rGOLS-1 was employed as the optimum rGOLS to enhance immobilization of Streptomyces albulus. Compared with raw LS, batch experiments showed rGOLS-1 facilitated superior cell vitality for ε-PL production due to the presence of reduced graphene oxide. In the sequential fed-batch cultivation of Streptomyces albulus using rGOLS-1 with an aerobic plant fibrous-bed bioreactor (rGOLS-1-AFPB), the maximum ε-PL concentration and productivity reached to 39.2 ± 0.63 g/L and 0.48 g/L/h. The cells immobilized in rGOLS-1 with high vitality and ε-PL production efficiency were reused six times over a period of 624 h. This research afforded an effective approach to enhance the fermentation performance of immobilized cells with the design of an advanced immobilization carrier.
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Affiliation(s)
- Cheng Wang
- College of Food Science and Light Industry, Nanjing Tech University, Nanjing 211816, China
| | - Xi Chen
- Nanjing Shangqin New Material Technology Company, Nanjing 210046, China
| | - Yingying Jiang
- Department of Physics, National University of Singapore, Singapore 117551, Singapore
| | - Na Li
- College of Food Science and Light Industry, Nanjing Tech University, Nanjing 211816, China
| | - Ping Zhu
- Institute of Agro-product Processing, Jiangsu Academy of Agricultural Sciences, Nanjing 210014, China
| | - Hong Xu
- College of Food Science and Light Industry, Nanjing Tech University, Nanjing 211816, China.
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36
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Olivera-Ardid S, Bello-Gil D, Tuzikov A, Araujo RN, Ferrero-Alves Y, García Figueroa BE, Labrador-Horrillo M, García-Pérez AL, Bovin N, Mañez R. Poly-L-Lysine-Based αGal-Glycoconjugates for Treating Anti-αGal IgE-Mediated Diseases. Front Immunol 2022; 13:873019. [PMID: 35432370 PMCID: PMC9009260 DOI: 10.3389/fimmu.2022.873019] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2022] [Accepted: 03/02/2022] [Indexed: 11/25/2022] Open
Abstract
Anti-αGal IgE antibodies mediate a spreading allergic condition known as αGal-syndrome (AGS). People exposed to hard tick bites are sensitized to αGal, producing elevated levels of anti-αGal IgE, which are responsible for AGS. This work presents an immunotherapy based on polymeric αGal-glycoconjugates for potentially treating allergic disorders by selectively inhibiting anti-αGal IgE antibodies. We synthesized a set of αGal-glycoconjugates, based on poly-L-lysine of different degrees of polymerization (DP1000, DP600, and DP100), to specifically inhibit in vitro the anti-αGal IgE antibodies in the serum of αGal-sensitized patients (n=13). Moreover, an animal model for αGal sensitization in GalT-KO mice was developed by intradermal administration of hard tick' salivary gland extract, mimicking the sensitization mechanism postulated in humans. The in vitro exposure to all polymeric glycoconjugates (5-10-20-50-100 µg/mL) mainly inhibited anti-αGal IgE and IgM isotypes, with a lower inhibition effect on the IgA and IgG, respectively. We demonstrated a differential anti-αGal isotype inhibition as a function of the length of the poly-L-lysine and the number of αGal residues exposed in the glycoconjugates. These results defined a minimum of 27 αGal residues to inhibit most of the induced anti-αGal IgE in vitro. Furthermore, the αGal-glycoconjugate DP1000-RA0118 (10 mg/kg sc.) showed a high capacity to remove the anti-αGal IgE antibodies (≥75% on average) induced in GalT-KO mice, together with similar inhibition for circulating anti-αGal IgG and IgM. Our study suggests the potential clinical use of poly-L-lysine-based αGal-glycoconjugates for treating allergic disorders mediated by anti-αGal IgE antibodies.
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Affiliation(s)
- Sara Olivera-Ardid
- RemAb Therapeutics, Mòdul de Recerca B, UAB Bellaterra, Barcelona, Spain
| | - Daniel Bello-Gil
- RemAb Therapeutics, Mòdul de Recerca B, UAB Bellaterra, Barcelona, Spain
| | - Alexander Tuzikov
- Department of Chemical Biology of Glycans and Lipids, Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry Russian Academy of Sciences (RAS), Moscow, Russia
| | - Ricardo N. Araujo
- Laboratório de Artrópodes Hematófagos, Departamento de Parasitologia, ICB/UFMG, Belo Horizonte, Brazil
| | - Yara Ferrero-Alves
- RemAb Therapeutics, Mòdul de Recerca B, UAB Bellaterra, Barcelona, Spain
| | - Blanca Esther García Figueroa
- MEGA: Asthma Inception and Progression Mechanisms, Complejo Hospitalario de Navarra (CHN), Pamplona, Spain
- Instituto de investigación sanitaria de Navarra (IdiSNA), Pamplona, Spain
- ARADyAL Research Network, Instituto de Salud Carlos III (ISCIII), Madrid, Spain
| | - Moisés Labrador-Horrillo
- ARADyAL Research Network, Instituto de Salud Carlos III (ISCIII), Madrid, Spain
- Department of Medicine, Universitat Autònoma de Barcelona (UAB), Barcelona, Spain
- Allergy Section, Internal Medicine Department, Hospital Universitari Vall d’Hebron (HUVH), Barcelona, Spain
- Immunomediated Diseases and Innovative Therapies, Vall d’Hebron Institut de Recerca (VHIR), Barcelona, Spain
| | - Ana L. García-Pérez
- Departamento de Sanidad Animal, Instituto Vasco de Investigación de Desarrollo Agrario (NEIKER), Derio, Spain
| | - Nicolai Bovin
- Department of Chemical Biology of Glycans and Lipids, Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry Russian Academy of Sciences (RAS), Moscow, Russia
| | - Rafael Mañez
- RemAb Therapeutics, Mòdul de Recerca B, UAB Bellaterra, Barcelona, Spain
- Hospital Universitari de Bellvitge, Servicio de Medicina Intensiva, Hospitalet de Llobregat, Barcelona, Spain
- Instituto de Investigación Biomédica de Bellvitge (IDIBELL), Grupo Inmunidad Innata y Patología del Paciente Crítico, Hospitalet de Llobregat, Barcelona, Spain
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Jia H, Zeng X, Cai R, Wang Z, Yuan Y, Yue T. Fabrication of Epsilon- Polylysine-Based Magnetic Nanoflowers with Effective Antibacterial Activity against Alicyclobacillus acidoterrestris. J Agric Food Chem 2022; 70:857-868. [PMID: 35040323 DOI: 10.1021/acs.jafc.1c06885] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [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: 06/14/2023]
Abstract
The risk of fruit juice contamination caused by microorganisms, especially Alicyclobacillus acidoterrestris, has been reported worldwide. To develop cost-effective control methods, in this work, flower-like magnetic molybdenum disulfide (Fe3O4@MoS2) nanoparticles (NPs) were fabricated by a facile two-step hydrothermal method. After further modifying polyacrylic acid (PAA) on the surface of the NPs, epsilon-polylysine (EPL) was immobilized via N-(3-dimethylaminopropyl)-N-carbodiimide hydrochloride/N-hydroxysuccinimide coupling reaction to obtain the Fe3O4@MoS2@PAA-EPL nanocomposites. Antibacterial results exhibited that the synthesized nanocomposites showed effective antibacterial activity against A. acidoterrestris with a minimum inhibitory concentration of 0.31 mg mL-1. Investigation on the antibacterial mechanism revealed that the presence of nanocomposites caused damage and disruption of the bacterial membrane through dent formation, resulting in the leakage of intracellular protein. Moreover, the activity of dehydrogenase enzymes was inhibited with the treatment of Fe3O4@MoS2@PAA-EPL, causing the reduction of metabolic activity and adenosine triphosphate levels in bacteria. Simultaneously, the presence of nanocomposites improved intracellular reactive oxygen species levels, and this disrupted the antioxidant defense system and caused oxidative damage to bacteria. Furthermore, Fe3O4@MoS2@PAA-EPL nanocomposites were confirmed to possess satisfactory biocompatibility by performing in vitro cytotoxicity and in vivo acute toxicity experiments. The aim of this research was to develop a new pathway for the inhibition of A. acidoterrestris in the juice industry.
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Affiliation(s)
- Hang Jia
- College of Food Science and Engineering, Northwest A & F University, Yangling 712100, China
- Laboratory of Quality & Safety Risk Assessment for Agro-Products (Yangling), Ministry of Agriculture, Yangling 712100, China
| | - Xuejun Zeng
- College of Food Science and Engineering, Northwest A & F University, Yangling 712100, China
- Laboratory of Quality & Safety Risk Assessment for Agro-Products (Yangling), Ministry of Agriculture, Yangling 712100, China
| | - Rui Cai
- College of Food Science and Engineering, Northwest A & F University, Yangling 712100, China
- Laboratory of Quality & Safety Risk Assessment for Agro-Products (Yangling), Ministry of Agriculture, Yangling 712100, China
| | - Zhouli Wang
- College of Food Science and Engineering, Northwest A & F University, Yangling 712100, China
- Laboratory of Quality & Safety Risk Assessment for Agro-Products (Yangling), Ministry of Agriculture, Yangling 712100, China
| | - Yahong Yuan
- College of Food Science and Engineering, Northwest A & F University, Yangling 712100, China
- Laboratory of Quality & Safety Risk Assessment for Agro-Products (Yangling), Ministry of Agriculture, Yangling 712100, China
| | - Tianli Yue
- College of Food Science and Engineering, Northwest A & F University, Yangling 712100, China
- Laboratory of Quality & Safety Risk Assessment for Agro-Products (Yangling), Ministry of Agriculture, Yangling 712100, China
- College of Food Science and Technology, Northwest University, Xi'an 710069, China
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38
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Gao J, Wang C, Wang C, Chu Y, Wang S, Sun MY, Ji H, Gao Y, Wang Y, Han Y, Song F, Liu H, Zhang Y, Han L. Poly-l-Lysine-Modified Graphene Field-Effect Transistor Biosensors for Ultrasensitive Breast Cancer miRNAs and SARS-CoV-2 RNA Detection. Anal Chem 2022; 94:1626-1636. [PMID: 35025203 PMCID: PMC8767657 DOI: 10.1021/acs.analchem.1c03786] [Citation(s) in RCA: 30] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2021] [Accepted: 01/04/2022] [Indexed: 11/29/2022]
Abstract
(Mi)RNAs are important biomarkers for cancers diagnosis and pandemic diseases, which require fast, ultrasensitive, and economical detection strategies to quantitatively detect exact (mi)RNAs expression levels. The novel coronavirus disease (SARS-CoV-2) has been breaking out globally, and RNA detection is the most effective way to identify the SARS-CoV-2 virus. Here, we developed an ultrasensitive poly-l-lysine (PLL)-functionalized graphene field-effect transistor (PGFET) biosensor for breast cancer miRNAs and viral RNA detection. PLL is functionalized on the channel surface of GFET to immobilize DNA probes by the electrostatic force. The results show that PGFET biosensors can achieve a (mi)RNA detection range of five orders with a detection limit of 1 fM and an entire detection time within 20 min using 2 μL of human serum and throat swab samples, which exhibits more than 113% enhancement in terms of sensitivity compared to that of GFET biosensors. The performance enhancement mechanisms of PGFET biosensors were comprehensively studied based on an electrical biosensor theoretical model and experimental results. In addition, the PGFET biosensor was applied for the breast cancer miRNA detection in actual serum samples and SARS-CoV-2 RNA detection in throat swab samples, providing a promising approach for rapid cancer diagnosis and virus screening.
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Affiliation(s)
- Jianwei Gao
- Institute
of Marine Science and Technology, Shandong
University, Qingdao 266237, China
| | - Chunhua Wang
- Institute
of Marine Science and Technology, Shandong
University, Qingdao 266237, China
| | - Chao Wang
- Institute
of Marine Science and Technology, Shandong
University, Qingdao 266237, China
| | - Yujin Chu
- Institute
of Marine Science and Technology, Shandong
University, Qingdao 266237, China
| | - Shun Wang
- Institute
of Marine Science and Technology, Shandong
University, Qingdao 266237, China
| | - Ming yuan Sun
- Institute
of Marine Science and Technology, Shandong
University, Qingdao 266237, China
| | - Hao Ji
- Institute
of Marine Science and Technology, Shandong
University, Qingdao 266237, China
| | - Yakun Gao
- Institute
of Marine Science and Technology, Shandong
University, Qingdao 266237, China
| | - Yanhao Wang
- Institute
of Marine Science and Technology, Shandong
University, Qingdao 266237, China
| | - Yingkuan Han
- Institute
of Marine Science and Technology, Shandong
University, Qingdao 266237, China
| | - Fangteng Song
- Institute
of Marine Science and Technology, Shandong
University, Qingdao 266237, China
| | - Hong Liu
- State
Key Laboratory of Crystal Materials, Shandong
University, Jinan, Shandong 250100, China
| | - Yu Zhang
- Institute
of Marine Science and Technology, Shandong
University, Qingdao 266237, China
| | - Lin Han
- Institute
of Marine Science and Technology, Shandong
University, Qingdao 266237, China
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Morsin M, Nafisah S, Sanudin R, Razali NL, Mahmud F, Soon CF. The role of positively charge poly-L-lysine in the formation of high yield gold nanoplates on the surface for plasmonic sensing application. PLoS One 2021; 16:e0259730. [PMID: 34748606 PMCID: PMC8575294 DOI: 10.1371/journal.pone.0259730] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2021] [Accepted: 10/25/2021] [Indexed: 11/18/2022] Open
Abstract
An anisotropic structure, gold (Au) nanoplates was synthesized using a two-step wet chemical seed mediated growth method (SMGM) directly on the substrate surface. Prior to the synthesis process, poly-l-lysine (PLL) as a cation polymer was used to enhance the yield of grown Au nanoplates. The electrostatic interaction of positive charged by PLL with negative charges from citrate-capped gold nanoseeds contributes to the yield increment. The percentage of PLL was varied from 0% to 10% to study the morphology of Au nanoplates in term of shape, size and surface density. 5% PLL with single layer treatment produce a variety of plate shapes such as hexagonal, flat rod and triangular obtained over the whole substrate surface with the estimated maximum yield up to ca. 48%. The high yield of Au nanoplates exhibit dual plasmonic peaks response that are associated with transverse and longitudinal localized surface plasmon resonance (TSPR and LSPR). Then, the PLL treatment process was repeated twice resulting the increment of Au nanoplates products to ca. 60%. The thin film Au nanoplates was further used as sensing materials in plasmonic sensor for detection of boric acid. The anisotropic Au nanoplates have four sensing parameters being monitored when the medium changes, which are peak position (wavelength shift), intensity of TSPR and LSPR, and the changes on sensing responses. The sensor responses are based on the interaction of light with dielectric properties from surrounding medium. The resonance effect produces by a collection of electron vibration on the Au nanoparticles surface after hit by light are captured as the responses. As a conclusion, it was found that the PLL treatment is capable to promote high yield of Au nanoplates. Moreover, the high yield of the Au nanoplates is an indication as excellent candidate for sensing material in plasmonic sensor.
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Affiliation(s)
- Marlia Morsin
- Microelectronics & Nanotechnology—Shamsuddin Research Centre (MiNT-SRC), Institute of Integrated Engineering (IIE), Universiti Tun Hussein Onn Malaysia, Parit Raja, Batu Pahat Johor, Malaysia
- Faculty of Electronic and Electrical Engineering (FKEE), Universiti Tun Hussein Onn Malaysia, Parit Raja, Batu Pahat Johor, Malaysia
- * E-mail:
| | - Suratun Nafisah
- Department of Electrical Engineering, Institut Teknologi Sumatera (ITERA), Lampung Selatan, Indonesia
| | - Rahmat Sanudin
- Microelectronics & Nanotechnology—Shamsuddin Research Centre (MiNT-SRC), Institute of Integrated Engineering (IIE), Universiti Tun Hussein Onn Malaysia, Parit Raja, Batu Pahat Johor, Malaysia
- Faculty of Electronic and Electrical Engineering (FKEE), Universiti Tun Hussein Onn Malaysia, Parit Raja, Batu Pahat Johor, Malaysia
| | - Nur Liyana Razali
- Microelectronics & Nanotechnology—Shamsuddin Research Centre (MiNT-SRC), Institute of Integrated Engineering (IIE), Universiti Tun Hussein Onn Malaysia, Parit Raja, Batu Pahat Johor, Malaysia
- Faculty of Electronic and Electrical Engineering (FKEE), Universiti Tun Hussein Onn Malaysia, Parit Raja, Batu Pahat Johor, Malaysia
| | - Farhanahani Mahmud
- Microelectronics & Nanotechnology—Shamsuddin Research Centre (MiNT-SRC), Institute of Integrated Engineering (IIE), Universiti Tun Hussein Onn Malaysia, Parit Raja, Batu Pahat Johor, Malaysia
- Faculty of Electronic and Electrical Engineering (FKEE), Universiti Tun Hussein Onn Malaysia, Parit Raja, Batu Pahat Johor, Malaysia
| | - Chin Fhong Soon
- Microelectronics & Nanotechnology—Shamsuddin Research Centre (MiNT-SRC), Institute of Integrated Engineering (IIE), Universiti Tun Hussein Onn Malaysia, Parit Raja, Batu Pahat Johor, Malaysia
- Faculty of Electronic and Electrical Engineering (FKEE), Universiti Tun Hussein Onn Malaysia, Parit Raja, Batu Pahat Johor, Malaysia
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Stagi L, De Forni D, Malfatti L, Caboi F, Salis A, Poddesu B, Cugia G, Lori F, Galleri G, Innocenzi P. Effective SARS-CoV-2 antiviral activity of hyperbranched polylysine nanopolymers. Nanoscale 2021; 13:16465-16476. [PMID: 34553728 DOI: 10.1039/d1nr03745e] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
The coronavirus pandemic (COVID-19) had spread rapidly since December 2019, when it was first identified in Wuhan, China. As of April 2021, more than 130 million cases have been confirmed, with more than 3 million deaths, making it one of the deadliest pandemics in history. Different approaches must be put in place to confront a new pandemic: community-based behaviours (i.e., isolation and social distancing), antiviral treatments, and vaccines. Although behaviour-based actions have produced significant benefits and several efficacious vaccines are now available, there is still an urgent need for treatment options. Remdesivir represents the first antiviral drug approved by the Food and Drug Administration for COVID-19 but has several limitations in terms of safety and treatment benefits. There is still a strong request for other effective, safe, and broad-spectrum antiviral systems in light of future emergent coronaviruses. Here, we describe a polymeric nanomaterial derived from L-lysine, with an antiviral activity against SARS-CoV-2 associated with a good safety profile in vitro. Nanoparticles of hyperbranched polylysine, synthesized by L-lysine's thermal polymerization catalyzed by boric acid, effectively inhibit the SARS-CoV-2 replication. The virucidal activity is associated with the charge and dimension of the nanomaterial, favouring the electrostatic interaction with the viral surface being only slightly larger than the virions' dimensions. Low-cost production and easiness of synthesis strongly support the further development of such innovative nanomaterials as a tool for potential treatments of COVID-19 and, in general, as broad-spectrum antivirals.
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Affiliation(s)
- Luigi Stagi
- Laboratorio di Scienza dei Materiali e Nanotecnologie (LMNT), Dipartimento di Chimica e Farmacia, CR-INSTM, Università di Sassari, Via Vienna 2, 07041 Sassari, Italy.
| | | | - Luca Malfatti
- Laboratorio di Scienza dei Materiali e Nanotecnologie (LMNT), Dipartimento di Chimica e Farmacia, CR-INSTM, Università di Sassari, Via Vienna 2, 07041 Sassari, Italy.
| | - Francesca Caboi
- Laboratorio NMR e Tecnologie Bioanalitiche, Sardegna Ricerche, Parco Scientifico e Tecnologico della Sardegna, 09010 Pula, CA, Italy
| | - Andrea Salis
- Dipartimento di Scienze Chimiche e Geologiche, Università di Cagliari, Cittadella Universitaria, SS 554 bivio Sestu, 09042 Monserrato, CA, Italy
| | | | - Giulia Cugia
- ViroStatics srl, Viale Umberto I, 46, 07100 Sassari, Italy
| | - Franco Lori
- ViroStatics srl, Viale Umberto I, 46, 07100 Sassari, Italy
| | - Grazia Galleri
- Dipartimento di Science Mediche, Chirurgiche e Sperimentali, Viale S. Pietro 8, 07100 Sassari, Italy
| | - Plinio Innocenzi
- Laboratorio di Scienza dei Materiali e Nanotecnologie (LMNT), Dipartimento di Chimica e Farmacia, CR-INSTM, Università di Sassari, Via Vienna 2, 07041 Sassari, Italy.
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Naassaoui I, Aschi A. Influence of temperature and salt on coacervation in an aqueous mixture of poly-L-lysine (PLL) and poly-(sodium styrene sulfonate) (PSSNa). Eur Biophys J 2021; 50:877-887. [PMID: 34047804 DOI: 10.1007/s00249-021-01542-4] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [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: 05/02/2020] [Revised: 01/20/2021] [Accepted: 04/19/2021] [Indexed: 11/25/2022]
Abstract
The mixture of poly-L-lysine (PLL) and long-chain PSSNa can lead to the formation of soluble complexes depending on pH, PLL concentration, ionic strength, and temperature. The influence of these stimuli was studied by zetametry, dynamic and ultra-small-angle light scattering, and turbidimetric measurements. First of all, we studied the stoichiometry of complexation, and then considered the influence of salt concentration and temperature on the behavior of the mixture at different pH values. These findings have allowed us to conclude that the polyelectrolyte-polypeptide stoichiometry is controlled by electrostatic interactions between opposite charges. At mass ratios between 1.8 and 2.3 and with net charges close to neutrality, unstable complexes were formed and flocculated due to the hydrophobic attraction leading to macroscopic phase separation. The linear charge density of the complex is also controlled by the ionic strength. Higher CaCl2 concentrations reduce the complex stability and decrease the charge density, which leads to surface patch binding (SPB) at higher pH. Finally, the electrostatic interactions and strength of hydrogen bonds increased the stabilization of the complexes formed at temperatures lower than 45 °C. At temperatures higher than 45 °C, hydrophobic interactions became more dominant, causing a destabilization of the complexes.
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Affiliation(s)
- Imen Naassaoui
- Faculté des Sciences de Tunis, LR99ES16 Laboratoire Physique de la Matière Molle et de la Modélisation Électromagnétique, Université de Tunis El Manar, 2092, Tunis, Tunisia
| | - Adel Aschi
- Faculté des Sciences de Tunis, LR99ES16 Laboratoire Physique de la Matière Molle et de la Modélisation Électromagnétique, Université de Tunis El Manar, 2092, Tunis, Tunisia.
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Li W, Lv J, Dong T, Li X, Li X, Tan Z, Jia S. Effects of Amino Acids and Overexpression of dapA Gene on the Production of ε-Poly-L-lysine by Streptomyces diastatochromogenes Strains. Curr Microbiol 2021; 78:2640-2647. [PMID: 33991200 DOI: 10.1007/s00284-021-02510-z] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [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: 11/19/2020] [Accepted: 04/25/2021] [Indexed: 12/15/2022]
Abstract
In this study, the strain Streptomyces diastatochromogenes 6#-7, which efficiently synthesizes ε-Poly-L-lysine, was studied and the effects of 18 amino acids and overexpression of dapA gene on the fermentation efficiency of ε-PL by S. diastatochromogenes were investigated. It was shown that L-proline, L-lysine, L-isoleucine, and L-threonine could promote the production of ε-PL. Moreover, the overexpression of the dihydrodipicolinate synthase gene (dapA) helped improve the fermentation performance of S. diastatochromogenes. The maximum ε-PL yield of the overexpressing strain (S. diastatochromogenes 12#-2) increased by 17.5% compared with the original strain in 500 mL shake flask. When the fermentation was conducted in a 5-L fermenter, the fermentation duration was extended by 48 h, and ε-PL yield reached 30.54 g/L, which was a 19.8% increase compared to the original strain. The results of this study offered a promising approach to augment the production of ε-PL from Streptomyces, thus paving the way to reduce the cost of product ε-PL and enhance the fermentation efficiency of ε-PL production.
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Affiliation(s)
- Wenchao Li
- State Key Laboratory of Food Nutrition and Safety, Tianjin University of Science and Technology, Tianjin, 300457, PR China
- Key Laboratory of Industrial Fermentation Microbiology, Ministry of Education, Tianjin University of Science and Technology, Tianjin, 300457, PR China
| | - Junge Lv
- State Key Laboratory of Food Nutrition and Safety, Tianjin University of Science and Technology, Tianjin, 300457, PR China
- Key Laboratory of Industrial Fermentation Microbiology, Ministry of Education, Tianjin University of Science and Technology, Tianjin, 300457, PR China
| | - Tianyu Dong
- State Key Laboratory of Food Nutrition and Safety, Tianjin University of Science and Technology, Tianjin, 300457, PR China
- Key Laboratory of Industrial Fermentation Microbiology, Ministry of Education, Tianjin University of Science and Technology, Tianjin, 300457, PR China
| | - Xinying Li
- State Key Laboratory of Food Nutrition and Safety, Tianjin University of Science and Technology, Tianjin, 300457, PR China
- Key Laboratory of Industrial Fermentation Microbiology, Ministry of Education, Tianjin University of Science and Technology, Tianjin, 300457, PR China
| | - Xiaona Li
- State Key Laboratory of Food Nutrition and Safety, Tianjin University of Science and Technology, Tianjin, 300457, PR China
- Key Laboratory of Industrial Fermentation Microbiology, Ministry of Education, Tianjin University of Science and Technology, Tianjin, 300457, PR China
| | - Zhilei Tan
- State Key Laboratory of Food Nutrition and Safety, Tianjin University of Science and Technology, Tianjin, 300457, PR China.
- Key Laboratory of Industrial Fermentation Microbiology, Ministry of Education, Tianjin University of Science and Technology, Tianjin, 300457, PR China.
- College of Biotechnology, Tianjin University of Science and Technology, Tianjin, 300457, PR China.
| | - Shiru Jia
- State Key Laboratory of Food Nutrition and Safety, Tianjin University of Science and Technology, Tianjin, 300457, PR China.
- Key Laboratory of Industrial Fermentation Microbiology, Ministry of Education, Tianjin University of Science and Technology, Tianjin, 300457, PR China.
- College of Biotechnology, Tianjin University of Science and Technology, Tianjin, 300457, PR China.
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Liu H, Zhao X, Yu M, Meng L, Zhou T, Shan Y, Liu X, Xia Z, An M, Wu Y. Transcriptomic and Functional Analyses Indicate Novel Anti-viral Mode of Actions on Tobacco Mosaic Virus of a Microbial Natural Product ε-Poly-l-lysine. J Agric Food Chem 2021; 69:2076-2086. [PMID: 33586965 DOI: 10.1021/acs.jafc.0c07357] [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] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Novel anti-viral natural product ε-poly-l-lysine (ε-PL) produced by Streptomyces is a homopolymer of l-lysine, of which the underlying molecular mode of action remains to be further elucidated. In this study, ε-PL induced significant fragmentation of tobacco mosaic virus (TMV) virions and delayed the systemic infection of TMV-GFP as well as wild-type TMV in plants. ε-PL treatment also markedly inhibited RNA accumulation of TMV in tobacco BY-2 protoplasts. The results of RNA-seq indicated that the agent induced significantly differential expression of genes that are associated with defense response, stress response, autophagy, and ubiquitination. Among them, 15 critical differential expressed genes were selected for real-time quantitative PCR validation. We further demonstrated that ε-PL can induce host defense responses by assessing the activity of several defense-related enzymes in plants. Our results provided valuable insights into molecular anti-viral mode of action for ε-PL, which is expected to be applied as a novel microbial natural product against plant virus diseases.
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Affiliation(s)
- He Liu
- College of Plant Protection, Shenyang Agricultural University, Shenyang 110866, Liaoning, China
| | - Xiuxiang Zhao
- College of Plant Protection, Shenyang Agricultural University, Shenyang 110866, Liaoning, China
| | - Miao Yu
- College of Plant Protection, Shenyang Agricultural University, Shenyang 110866, Liaoning, China
| | - Lingxue Meng
- College of Plant Protection, Shenyang Agricultural University, Shenyang 110866, Liaoning, China
| | - Tao Zhou
- College of Plant Protection, Shenyang Agricultural University, Shenyang 110866, Liaoning, China
| | - Yuhang Shan
- College of Plant Protection, Shenyang Agricultural University, Shenyang 110866, Liaoning, China
| | - Xiaoying Liu
- College of Plant Protection, Shenyang Agricultural University, Shenyang 110866, Liaoning, China
| | - Zihao Xia
- College of Plant Protection, Shenyang Agricultural University, Shenyang 110866, Liaoning, China
| | - Mengnan An
- College of Plant Protection, Shenyang Agricultural University, Shenyang 110866, Liaoning, China
| | - Yuanhua Wu
- College of Plant Protection, Shenyang Agricultural University, Shenyang 110866, Liaoning, China
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Kim YS, Chien AJ, Guo JL, Smith BT, Watson E, Pearce HA, Koons GL, Navara AM, Lam J, Scott DW, Grande-Allen KJ, Mikos AG. Chondrogenesis of cocultures of mesenchymal stem cells and articular chondrocytes in poly(l-lysine)-loaded hydrogels. J Control Release 2020; 328:710-721. [PMID: 33010336 PMCID: PMC7749039 DOI: 10.1016/j.jconrel.2020.09.048] [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] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2020] [Revised: 09/22/2020] [Accepted: 09/27/2020] [Indexed: 12/14/2022]
Abstract
This work investigated the effect of poly(l-lysine) (PLL) molecular weight and concentration on chondrogenesis of cocultures of mesenchymal stem cells (MSCs) and articular chondrocytes (ACs) in PLL-loaded hydrogels. An injectable dual-network hydrogel composed of a poly(N-isopropylacrylamide)-based synthetic thermogelling macromer and a chondroitin sulfate-based biological network was leveraged as a model to deliver PLL and encapsulate the two cell populations. Incorporation of PLL into the hydrogel did not affect the hydrogel's swelling properties and degradation characteristics, nor the viability of encapsulated cells. Coculture groups demonstrated higher type II collagen expression compared to the MSC monoculture group. Expression of hypertrophic phenotype was also limited in the coculture groups. Histological analysis indicated that the ratio of MSCs to ACs was an accurate predictor of the degree of long-term chondrogenesis, while the presence of PLL was shown to have a more substantial short-term effect. Altogether, this study demonstrates that coculturing MSCs with ACs can greatly enhance the chondrogenicity of the overall cell population and offers a platform to further elucidate the short- and long-term effect of polycationic factors on the chondrogenesis of MSC and AC cocultures.
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Affiliation(s)
- Yu Seon Kim
- Department of Bioengineering, Rice University, 6500 Main Street, Houston, TX 77030, United States of America
| | - Athena J Chien
- Department of Bioengineering, Rice University, 6500 Main Street, Houston, TX 77030, United States of America
| | - Jason L Guo
- Department of Bioengineering, Rice University, 6500 Main Street, Houston, TX 77030, United States of America
| | - Brandon T Smith
- Department of Bioengineering, Rice University, 6500 Main Street, Houston, TX 77030, United States of America
| | - Emma Watson
- Department of Bioengineering, Rice University, 6500 Main Street, Houston, TX 77030, United States of America
| | - Hannah A Pearce
- Department of Bioengineering, Rice University, 6500 Main Street, Houston, TX 77030, United States of America
| | - Gerry L Koons
- Department of Bioengineering, Rice University, 6500 Main Street, Houston, TX 77030, United States of America
| | - Adam M Navara
- Department of Bioengineering, Rice University, 6500 Main Street, Houston, TX 77030, United States of America
| | - Johnny Lam
- Department of Bioengineering, Rice University, 6500 Main Street, Houston, TX 77030, United States of America
| | - David W Scott
- Department of Statistics, Rice University, 6100 Main Street, Houston, TX 77005, United States of America
| | - K Jane Grande-Allen
- Department of Bioengineering, Rice University, 6500 Main Street, Houston, TX 77030, United States of America
| | - Antonios G Mikos
- Department of Bioengineering, Rice University, 6500 Main Street, Houston, TX 77030, United States of America.
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Schiattarella C, Moretta R, Defforge T, Gautier G, Della Ventura B, Terracciano M, Tortiglione C, Fardella F, Maddalena P, De Stefano L, Velotta R, Rea I. Time-gated luminescence imaging of positively charged poly-l-lysine-coated highly microporous silicon nanoparticles in living Hydra polyp. J Biophotonics 2020; 13:e202000272. [PMID: 32827195 DOI: 10.1002/jbio.202000272] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [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: 07/08/2020] [Revised: 08/06/2020] [Accepted: 08/19/2020] [Indexed: 06/11/2023]
Abstract
The development of non-toxic fluorescent agents alternative to heavy metal-based semiconductor quantum dots represents a relevant topic in biomedical research and in particular in the bioimaging field. Herein, highly luminescent Si─H terminal microporous silicon nanoparticles with μs-lived photoemission are chemically modified with a two step process and successfully used as label-free probes for in vivo time-gated luminescence imaging. In this context, Hydra vulgaris is used as model organism for in vivo study and validity assessment. The application of time gating allows to pursue an effective sorting of the signals, getting rid of the most common sources of noise that are fast-decay tissue autofluorescence and excitation scattering within the tissue. Indeed, an enhancement by a factor ~ 20 in the image signal-to-noise ratio can be estimated.
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Affiliation(s)
- Chiara Schiattarella
- Department of Physics "E. Pancini", University of Naples "Federico II", Naples, Italy
| | - Rosalba Moretta
- Institute of Applied Sciences and Intelligent Systems, CNR, Naples, Italy
| | - Thomas Defforge
- Université de Tours, GREMAN UMR 7347, INSA-CVL, CNRS, Tours, France
| | - Gaël Gautier
- Université de Tours, GREMAN UMR 7347, INSA-CVL, CNRS, Tours, France
| | | | - Monica Terracciano
- Department of Pharmacy, University of Naples "Federico II", Naples, Italy
| | | | - Federica Fardella
- Department of Biology, University of Naples "Federico II", Naples, Italy
| | - Pasqualino Maddalena
- Department of Physics "E. Pancini", University of Naples "Federico II", Naples, Italy
| | - Luca De Stefano
- Institute of Applied Sciences and Intelligent Systems, CNR, Naples, Italy
| | - Raffaele Velotta
- Department of Physics "E. Pancini", University of Naples "Federico II", Naples, Italy
| | - Ilaria Rea
- Institute of Applied Sciences and Intelligent Systems, CNR, Naples, Italy
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Augustine R, Kim DK, Kim HA, Kim JH, Kim I. Poly( N-isopropylacrylamide)- b-Poly(L-lysine)- b-Poly(L-histidine) Triblock Amphiphilic Copolymer Nanomicelles for Dual-Responsive Anticancer Drug Delivery. J Nanosci Nanotechnol 2020; 20:6959-6967. [PMID: 32604542 DOI: 10.1166/jnn.2020.18822] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
A series of ABC triblock poly(N-isopropylacrylamide)75-block-poly(L-lysine)35-block-poly(L-histidine)n (p(NIPAM)75-b-p(Lys)35-b-p(His)N) (N = 35,50,75,100) copolymer bio-conjugates were prepared by combining reversible addition-fragmentation chain transfer polymerization and fast ring-opening polymerization of N-carboxyanhydride a-amino acid using 1,3-dicyclohexylimidazolium hydrogen carbonate as a catalyst. All the resulting triblock copolymers self-assembled into spherical micellar aggregates in aqueous solution, irrespective of the chain length of the histidine block. The micellar aggregates encapsulated the anticancer drug doxorubicin (Dox) and exhibited high drug loading efficiency. Temperature and pH stimuli were applied to investigate the controlled release of Dox. The non-cytotoxic nature of the polymers was investigated using 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT) assay. Cellular uptake of the Dox-loaded micelles revealed that the micelles successfully release Dox in cancer cells in response to pH- and temperature-induced morphological change. In-vitro studies further confirmed that the Dox-loaded triblock copolymer micelle is an excellent platform for drug delivery.
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Affiliation(s)
- Rimesh Augustine
- BK21 PLUS Center for Advanced Chemical Technology, Department of Polymer Science and Engineering, Pusan National University, Busan 609-735, Republic of Korea
| | - Dae-Kyoung Kim
- Department of Physiology, School of Medicine, Pusan National University, Yangsan 626-870, Gyeongsangnam-do, Republic of Korea
| | - Ho An Kim
- BK21 PLUS Center for Advanced Chemical Technology, Department of Polymer Science and Engineering, Pusan National University, Busan 609-735, Republic of Korea
| | - Jae Ho Kim
- Department of Physiology, School of Medicine, Pusan National University, Yangsan 626-870, Gyeongsangnam-do, Republic of Korea
| | - Il Kim
- BK21 PLUS Center for Advanced Chemical Technology, Department of Polymer Science and Engineering, Pusan National University, Busan 609-735, Republic of Korea
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Hasturk O, Sahoo JK, Kaplan DL. Synthesis and Characterization of Silk Ionomers for Layer-by-Layer Electrostatic Deposition on Individual Mammalian Cells. Biomacromolecules 2020; 21:2829-2843. [PMID: 32530610 PMCID: PMC7658502 DOI: 10.1021/acs.biomac.0c00523] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Nanocoating of individual mammalian cells with polymer layers has been of increasing interest in biotechnology and biomedical engineering applications. Electrostatic layer-by-layer (LbL) deposition of polyelectrolytes on negatively charged cell surfaces has been utilized for cell nanocoatings using synthetic or natural polymers with a net charge at physiological conditions. Here, our previous synthesis of silk-based ionomers through modification of silk fibroin (SF) with polyglutamate (PG) and polylysine (PL) was exploited for the nanocoating of mammalian cells. SF-PL constructs were cytotoxic to mammalian cells, thus an alternative approach for the synthesis of silk ionomers through carboxylation and amination of regenerated SF chains was utilized. Through the optimization of material properties and composition of incubation buffers, silk ionomers could be electrostatically assembled on the surface of murine fibroblasts and human mesenchymal stem cells (hMSCs) to form nanoscale multilayers without significantly impairing cell viability. The resulting silk-based protein nanoshells were transient and degraded over time, allowing for cell proliferation. The strategies presented here provide a basis for the cytocompatible nanoencapsulation of mammalian cells within silk-based artificial cell walls, with potential benefits for future studies on surface engineering of mammalian cells, as well as for utility in cell therapies, 3D printing, and preservation.
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Affiliation(s)
- Onur Hasturk
- Department of Biomedical Engineering, Tufts University, 4 Colby Street, Medford, MA 02155, USA
| | - Jugal Kishore Sahoo
- Department of Biomedical Engineering, Tufts University, 4 Colby Street, Medford, MA 02155, USA
| | - David L. Kaplan
- Department of Biomedical Engineering, Tufts University, 4 Colby Street, Medford, MA 02155, USA
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48
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Luo K, Park H, Adra HJ, Ryu J, Lee JH, Yu J, Choi SJ, Kim YR. Charge-switchable magnetic separation and characterization of food additive titanium dioxide nanoparticles from commercial food. J Hazard Mater 2020; 393:122483. [PMID: 32208332 DOI: 10.1016/j.jhazmat.2020.122483] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [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: 02/03/2020] [Revised: 03/04/2020] [Accepted: 03/05/2020] [Indexed: 06/10/2023]
Abstract
Growing concerns about the potential health effects of nanoscale titanium dioxide (TiO2) have necessitated the need for monitoring the size distribution and physicochemical properties of food additive TiO2 that are present in commercial food. Acid digestion is by far the most widely used method to remove interfering food matrices, but the highly corrosive nature of the reaction could alter the physicochemical properties of the TiO2, which may give a skewed information about the materials. Here, we report an effective approach to extract intact form of food additive TiO2 nanoparticles from processed food through charge-charge interaction between TiO2 particles and charge-switchable starch magnetic beads (PL@SMBs), of which the captured TiO2 is readily harvested by switching the surface charge of PL@SMBs to neutral. The size and surface property of extracted TiO2 were shown to be well maintained due to the mild nature of the reaction. The extracted TiO2 particles from 10 commercial processed food showed a size distribution from 40 to 250 nm with a mean diameter of 115 nm, of which 22 % of them were less than 100 nm. The extracted TiO2 did not exhibit short-term cytotoxicity, but induced cellular oxidative stress at high concentration.
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Affiliation(s)
- Ke Luo
- Graduate School of Biotechnology & Department of Food Science and Biotechnology, College of Life Sciences, Kyung Hee University, Yongin, 17104, South Korea
| | - Hyein Park
- Graduate School of Biotechnology & Department of Food Science and Biotechnology, College of Life Sciences, Kyung Hee University, Yongin, 17104, South Korea
| | - Hazzel Joy Adra
- Graduate School of Biotechnology & Department of Food Science and Biotechnology, College of Life Sciences, Kyung Hee University, Yongin, 17104, South Korea
| | - Jian Ryu
- Graduate School of Biotechnology & Department of Food Science and Biotechnology, College of Life Sciences, Kyung Hee University, Yongin, 17104, South Korea
| | - Jun-Hee Lee
- Graduate School of Biotechnology & Department of Food Science and Biotechnology, College of Life Sciences, Kyung Hee University, Yongin, 17104, South Korea
| | - Jin Yu
- Department of Applied Food System, Major of Food Science & Technology, Seoul Women's University, Seoul, 01797, South Korea
| | - Soo-Jin Choi
- Department of Applied Food System, Major of Food Science & Technology, Seoul Women's University, Seoul, 01797, South Korea
| | - Young-Rok Kim
- Graduate School of Biotechnology & Department of Food Science and Biotechnology, College of Life Sciences, Kyung Hee University, Yongin, 17104, South Korea.
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49
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Pisetsky DS, Spencer DM, Mobarrez F, Fuzzi E, Gunnarsson I, Svenungsson E. The binding of SLE autoantibodies to mitochondria. Clin Immunol 2020; 212:108349. [PMID: 31982644 PMCID: PMC10538439 DOI: 10.1016/j.clim.2020.108349] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2019] [Revised: 01/22/2020] [Accepted: 01/23/2020] [Indexed: 02/08/2023]
Abstract
Systemic lupus erythematosus (SLE) is a prototypic autoimmune disease characterized by immune complexes. Because these complexes contain mitochondrial components, we assessed the presence of antibodies to whole mitochondria (wMITO) using an ELISA in which mitochondria from mouse liver are bound to microtiter plates pre-coated with poly-l-lysine. Studies with this ELISA demonstrated that SLE plasmas contain abundant anti-wMITO activity. While digestion with DNase 1 did not affect anti-wMITO activity, adsorption of plasma on DNA affinity columns could reduce binding activity. Assay for anti-mitochondrial antibodies (AMA) by immunofluorescence and an ELISA with the M2 antigen (2-oxo-acid dehydrogenase protein complex) showed a low frequency of positivity, indicating that AMA and anti-wMITO are distinct specificities. In the study of 204 patients with SLE, the levels of anti-wMITO were higher in active SLE and correlated with levels of anti-DNA. These findings suggest that anti-wMITO can form immune complexes with mitochondria which may drive pathogenesis.
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Affiliation(s)
- David S Pisetsky
- Division of Rheumatology and Immunology, Duke University Medical Center, Durham, NC, United States of America; Medical Research Service, VA Medical Center, Durham, NC, United States of America.
| | - Diane M Spencer
- Division of Rheumatology and Immunology, Duke University Medical Center, Durham, NC, United States of America
| | - Fariborz Mobarrez
- Unit of Rheumatology, Department of Medicine, Solna, Karolinska Institutet, Karolinska University Hospital, Stockholm, Sweden; Department of Medical Sciences, Uppsala University, Uppsala, Sweden
| | - Enrico Fuzzi
- Unit of Rheumatology, Department of Medicine, Solna, Karolinska Institutet, Karolinska University Hospital, Stockholm, Sweden; Division of Rheumatology, Department of Medicine, University of Padua, Padua, Italy
| | - Iva Gunnarsson
- Unit of Rheumatology, Department of Medicine, Solna, Karolinska Institutet, Karolinska University Hospital, Stockholm, Sweden
| | - Elisabet Svenungsson
- Unit of Rheumatology, Department of Medicine, Solna, Karolinska Institutet, Karolinska University Hospital, Stockholm, Sweden
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50
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Liu H, Chen J, Xia Z, An M, Wu Y. Effects of ε-poly-l-lysine on vegetative growth, pathogenicity and gene expression of Alternaria alternata infecting Nicotiana tabacum. Pestic Biochem Physiol 2020; 163:147-153. [PMID: 31973852 DOI: 10.1016/j.pestbp.2019.11.005] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/23/2019] [Revised: 11/04/2019] [Accepted: 11/06/2019] [Indexed: 06/10/2023]
Abstract
Microbial secondary metabolites produced by Streptomyces are applied to control plant diseases. ε-poly-l-lysine (ε-PL) is a non-toxic food preservative, but the potential application of ε-PL as a microbial fungicide in agriculture has rarely been reported. In this study, Alternaria alternata (A. alternata) was used to reveal the effect and mode of action for ε-PL on the plant pathogenic fungi. The results showed that ε-PL effectively inhibited necrotic-lesion development caused by A. alternata on tobacco. Mycelial growth was also significantly inhibited in vitro by 100 μg/ml ε-PL using in vitro analysis. Moreover, 25 μg/ml ε-PL inhibited spore germination and induced abnormal morphological development of A. alternata hyphae. To clarify the molecular-genetic antifungal mechanisms, we selected several crucial genes involved in the development and pathogenesis of A. alternata and studied their expression regulated by ε-PL. Results of real-time quantitative PCR showed that a mycelium morphology and pathogenic process related cyclic adenosine monophosphate protein (cAMP) dependent protein kinase A (PKA), Alternaria alternata cAMP-dependent protein kinase catalytic subunit (AAPK1) and the early infection-related glyceraldehyde-3-phosphate dehydrogenase (GAPDH) were down-regulated after ε-PL treatment. The results provide novel insights for the application of ε-PL in the control of plant diseases caused by A. alternata.
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Affiliation(s)
- He Liu
- College of Plant Protection, Shenyang Agricultural University, Shenyang 110866, Liaoning, China
| | - Jianguang Chen
- College of Plant Protection, Shenyang Agricultural University, Shenyang 110866, Liaoning, China
| | - Zihao Xia
- College of Plant Protection, Shenyang Agricultural University, Shenyang 110866, Liaoning, China
| | - Mengnan An
- College of Plant Protection, Shenyang Agricultural University, Shenyang 110866, Liaoning, China.
| | - Yuanhua Wu
- College of Plant Protection, Shenyang Agricultural University, Shenyang 110866, Liaoning, China.
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