1
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Glyn T, Williams S, Whitehead M, Eglinton T, West N, Purcell RV. Digital spatial profiling identifies molecular changes involved in development of colitis-associated colorectal cancer. Front Oncol 2024; 14:1247106. [PMID: 38505585 PMCID: PMC10949367 DOI: 10.3389/fonc.2024.1247106] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2023] [Accepted: 02/01/2024] [Indexed: 03/21/2024] Open
Abstract
Objective Chronic colonic inflammation seen in inflammatory bowel disease (IBD) is a risk factor for colorectal cancer (CRC). Colitis-associated cancers (CAC) are molecularly different from sporadic CRC. This study aimed to evaluate spatially defined molecular changes associated with neoplastic progression to identify mechanisms of action and potential biomarkers for prognostication. Design IBD patients who had undergone colectomy for treatment of their IBD or dysplasia were identified from an institutional database. Formalin-fixed paraffin embedded samples from areas of normal, inflamed, dysplastic and adenocarcinoma tissue were identified for digital spatial profiling using the Nanostring GeoMx™ Cancer Transcriptome Atlas. RNA expression and quantification of 1812 genes was measured and analysed in a spatial context to compare differences in gene expression. Results Sixteen patients were included, nine patients had CAC, two had dysplasia only and five had colitis only. Significant, step-wise differences in gene expression were seen between tissue types, mainly involving progressive over-expression of collagen genes associated with stromal remodelling. Similarly, MYC over-expression was associated with neoplastic progression. Comparison of normal and inflamed tissue from patients who progressed to those who did not also showed significant differences in immune-related genes, including under-expression of thte chemokines CCL18, CCL25 and IL-R7, as well as CD3, CD6 and lysozyme. The known oncogene CD24 was significantly overexpressed. Conclusion Both tissue types and patient groups are molecularly distinguishable on the basis of their gene expression patterns. Further prospective work is necessary to confirm these differences and establish their clinical significance and potential utility as biomarkers.
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Affiliation(s)
- Tamara Glyn
- Department of Surgery and Critical Care, University of Otago, Christchurch, New Zealand
| | - Sarah Williams
- Griffith Health, Griffith University, Gold Coast, QLD, Australia
| | - Martin Whitehead
- Department of Anatomical Pathology, Te Whatu Ora Waitaha, Christchurch, New Zealand
| | - Tim Eglinton
- Department of Surgery and Critical Care, University of Otago, Christchurch, New Zealand
| | - Nicholas West
- Griffith Health, Griffith University, Gold Coast, QLD, Australia
| | - Rachel V. Purcell
- Department of Surgery and Critical Care, University of Otago, Christchurch, New Zealand
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2
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Guerra M, Garrudo FFF, Faustino C, Rosa ME, Ribeiro MHL. Exploring Functionalized Magnetic Hydrogel Polyvinyl Alcohol and Chitosan Electrospun Nanofibers. Gels 2023; 9:968. [PMID: 38131954 PMCID: PMC10743178 DOI: 10.3390/gels9120968] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2023] [Revised: 12/08/2023] [Accepted: 12/10/2023] [Indexed: 12/23/2023] Open
Abstract
Nanofibrous materials present interesting characteristics, such as higher area/mass ratio and reactivity. These properties have been exploited in different applications, such as drug-controlled release and site-specific targeting of biomolecules for several disease treatments, including cancer. The main goal of this study was to develop magnetized nanofiber systems of lysozyme (Lys) for biological applications. The system envisaged electrospun polyvinyl alcohol (PVA) and PVA/chitosan (CS) nanofibers, loaded with Lys, crosslinked with boronic acids [phenylboronic acid (PBA), including 2-acetylphenylboronic acid (aPBA), 2-formylphenylboronic (fPBA), or bortezomib (BTZ)] and functionalized with magnetic nanobeads (IONPs), which was successfully built and tested using a microscale approach. Evaluation of the morphology of nanofibers, obtained by electrospinning, was carried out using SEM. The biological activities of the Lys-loaded PVA/CS (90:10 and 70:30) nanofibers were evaluated using the Micrococcus lysodeikticus method. To evaluate the success of the encapsulation process, the ratio of adsorbed Lys on the nanofibers, Lys activity, and in vitro Lys release were determined in buffer solution at pH values mimicking the environment of cancer cells. The viability of Caco-2 cancer cells was evaluated after being in contact with electrospun PVA + Lys and PVA/CS + Lys nanofibers, with or without boronic acid functionalation, and all were magnetized with IONPs.
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Affiliation(s)
- Mónica Guerra
- Faculty of Pharmacy, Universidade de Lisboa, Av. Prof. Gama Pinto, 1649-003 Lisboa, Portugal; (M.G.); (C.F.)
| | - Fábio F. F. Garrudo
- Department of Bioengineering, Institute of Telecomunications, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, 1049-001 Lisboa, Portugal;
| | - Célia Faustino
- Faculty of Pharmacy, Universidade de Lisboa, Av. Prof. Gama Pinto, 1649-003 Lisboa, Portugal; (M.G.); (C.F.)
- Research Institute for Medicines (iMed.ULisboa), Faculty of Pharmacy, Universidade de Lisboa, Av. Prof. Gama Pinto, 1649-003 Lisboa, Portugal
- Department of Pharmaceutical Sciences and Medicines, Faculty of Pharmacy, Universidade de Lisboa, Av. Prof. Gama Pinto, 1649-003 Lisbon, Portugal
| | - Maria Emilia Rosa
- Instituto de Engenharia Mecânica (IDMEC), Instituto Superior Técnico, Universidade de Lisboa, 1049-001 Lisboa, Portugal;
| | - Maria H. L. Ribeiro
- Faculty of Pharmacy, Universidade de Lisboa, Av. Prof. Gama Pinto, 1649-003 Lisboa, Portugal; (M.G.); (C.F.)
- Research Institute for Medicines (iMed.ULisboa), Faculty of Pharmacy, Universidade de Lisboa, Av. Prof. Gama Pinto, 1649-003 Lisboa, Portugal
- Department of Pharmaceutical Sciences and Medicines, Faculty of Pharmacy, Universidade de Lisboa, Av. Prof. Gama Pinto, 1649-003 Lisbon, Portugal
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3
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Ojha P, Kar NP, Behera HT, Parija M, Nayak S, Singh S, Patra AK, Sahoo KK. Independent antioxidant and anticancer properties of a novel thermostable lysozyme isolated from Bacillus paralicheniformis: in silico and in vitro studies. 3 Biotech 2023; 13:240. [PMID: 37337524 PMCID: PMC10276796 DOI: 10.1007/s13205-023-03653-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2022] [Accepted: 05/28/2023] [Indexed: 06/21/2023] Open
Abstract
In this study, we evaluated the independent anticancer properties of a novel heat-stable lysozyme derived from the thermophilic bacterium Bacillus paralicheniformis (BplzC) to identify potential alternative therapies to address the suboptimal outcomes of current cancer treatments. Using the String 10.5 database, an in-silico protein-protein interaction study predicted that BplzC was a strong functional partner of cytochrome c, indicating a potential role in cancer cell apoptosis. Further, the HDOCK server predicted that BplzC strongly bound to cell death receptors, such as cytokines FAS receptor, leading to activation of cytochrome c and subsequent apoptosis in the cancer cell line. In vitro assays demonstrated uniform apoptotic activity of BplzC against various cancer cell lines, while showing no apoptotic activity against normal non-cancer cell lines. And showing no apoptotic activity against normal non-cancer cell lines suggested a very specific mode of action and without any adverse side effects. Additionally, BplzC exhibited ROS scavenging activity and reducing ability comparable to ascorbic acid, and significantly accelerated HEK293 cell migration. Our findings suggest that BplzC has specific cytotoxic effects on cancer cells and may be a valuable natural source of antioxidants for future use in the nutritional and pharmaceutical sectors.
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Affiliation(s)
- Purusottam Ojha
- Department of Botany, Ravenshaw University, Cuttack, Odisha 753003 India
- Imgenex India Pvt. Ltd., E5 Infocity, Chandka Industrial Estate, KIIT Post Office, Bhubaneswar, Odisha 751024 India
| | - Narayani Prasad Kar
- Department of Biological Sciences, North Carolina State University, Raleigh, NC USA
| | - Himadri Tanaya Behera
- Department of Biotechnology, KIIT Deemed to be University, Bhubaneswar, Odisha India
| | - Manaswini Parija
- Department of Botany, Ravenshaw University, Cuttack, Odisha 753003 India
| | - Shreenath Nayak
- Imgenex India Pvt. Ltd., E5 Infocity, Chandka Industrial Estate, KIIT Post Office, Bhubaneswar, Odisha 751024 India
| | - Sujay Singh
- Imgenex India Pvt. Ltd., E5 Infocity, Chandka Industrial Estate, KIIT Post Office, Bhubaneswar, Odisha 751024 India
| | - Ashok Kumar Patra
- Imgenex India Pvt. Ltd., E5 Infocity, Chandka Industrial Estate, KIIT Post Office, Bhubaneswar, Odisha 751024 India
| | - Khirod Kumar Sahoo
- Department of Botany, Ravenshaw University, Cuttack, Odisha 753003 India
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4
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Proteins and their functionalization for finding therapeutic avenues in cancer: Current status and future prospective. Biochim Biophys Acta Rev Cancer 2023; 1878:188862. [PMID: 36791920 DOI: 10.1016/j.bbcan.2023.188862] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2022] [Revised: 01/13/2023] [Accepted: 01/13/2023] [Indexed: 02/15/2023]
Abstract
Despite the remarkable advancement in the health care sector, cancer remains the second most fatal disease globally. The existing conventional cancer treatments primarily include chemotherapy, which has been associated with little to severe side effects, and radiotherapy, which is usually expensive. To overcome these problems, target-specific nanocarriers have been explored for delivering chemo drugs. However, recent reports on using a few proteins having anticancer activity and further use of them as drug carriers have generated tremendous attention for furthering the research towards cancer therapy. Biomolecules, especially proteins, have emerged as suitable alternatives in cancer treatment due to multiple favourable properties including biocompatibility, biodegradability, and structural flexibility for easy surface functionalization. Several in vitro and in vivo studies have reported that various proteins derived from animal, plant, and bacterial species, demonstrated strong cytotoxic and antiproliferative properties against malignant cells in native and their different structural conformations. Moreover, surface tunable properties of these proteins help to bind a range of anticancer drugs and target ligands, thus making them efficient delivery agents in cancer therapy. Here, we discuss various proteins obtained from common exogenous sources and how they transform into effective anticancer agents. We also comprehensively discuss the tumor-killing mechanisms of different dietary proteins such as bovine α-lactalbumin, hen egg-white lysozyme, and their conjugates. We also articulate how protein nanostructures can be used as carriers for delivering cancer drugs and theranostics, and strategies to be adopted for improving their in vivo delivery and targeting. We further discuss the FDA-approved protein-based anticancer formulations along with those in different phases of clinical trials.
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5
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Khalil A, Kashif M. Interaction studies of levofloxacin with human lysozyme in a ternary complex using multispectroscopic and computational analysis: A circular dichroism method for the quantitation of levofloxacin. J Mol Liq 2022. [DOI: 10.1016/j.molliq.2022.121023] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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6
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Jiang L, Li Y, Wang L, Guo J, Liu W, Meng G, Zhang L, Li M, Cong L, Sun M. Recent Insights Into the Prognostic and Therapeutic Applications of Lysozymes. Front Pharmacol 2021; 12:767642. [PMID: 34925025 PMCID: PMC8678502 DOI: 10.3389/fphar.2021.767642] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2021] [Accepted: 11/10/2021] [Indexed: 01/15/2023] Open
Abstract
Lysozymes are naturally occurring enzymes present in a variety of biological organisms, such as bacteria, fungi, and animal bodily secretions and tissues. It is also the main ingredient of many ethnomedicines. It is well known that lysozymes and lysozyme-like enzymes can be used as anti-bacterial agents by degrading bacterial cell wall peptidoglycan that leads to cell death, and can also inhibit fungi, yeasts, and viruses. In addition to its direct antimicrobial activity, lysozyme is also an important component of the innate immune system in most mammals. Increasing evidence has shown the immune-modulatory effects of lysozymes against infection and inflammation. More recently, studies have revealed the anti-cancer activities of lysozyme in multiple types of tumors, potentially through its immune-modulatory activities. In this review, we summarized the major functions and underlying mechanisms of lysozymes derived from animal and plant sources. We highlighted the therapeutic applications and recent advances of lysozymes in cancers, hypertension, and viral diseases, aiming toseeking alternative therapies for standard medical treatment bypassing side effects. We also evaluated the role of lysozyme as a promising cancer marker for prognosis to indicate the outcomes recurrence for patients.
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Affiliation(s)
- Lin Jiang
- College of Laboratory Medicine, Jilin Medical University, Jilin, China
| | - Yunhe Li
- College of Laboratory Medicine, Jilin Medical University, Jilin, China
| | - Liye Wang
- Department of Pharmacological and Pharmaceutical Sciences, College of Pharmacy, University of Houston, Houston, TX, United States
| | - Jian Guo
- College of Laboratory Medicine, Jilin Medical University, Jilin, China
| | - Wei Liu
- College of Laboratory Medicine, Jilin Medical University, Jilin, China
| | - Guixian Meng
- College of Laboratory Medicine, Jilin Medical University, Jilin, China
| | - Lei Zhang
- College of Laboratory Medicine, Jilin Medical University, Jilin, China
| | - Miao Li
- Department of Neurosurgery, China-Japan Union Hospital, Jilin University, Changchun, China
| | - Lina Cong
- School of Biological Engineering, Dalian Polytechnic University, Dalian, China
| | - Meiyan Sun
- College of Laboratory Medicine, Jilin Medical University, Jilin, China
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7
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Zharkova MS, Golubeva OY, Orlov DS, Vladimirova EV, Dmitriev AV, Tossi A, Shamova OV. Silver Nanoparticles Functionalized With Antimicrobial Polypeptides: Benefits and Possible Pitfalls of a Novel Anti-infective Tool. Front Microbiol 2021; 12:750556. [PMID: 34975782 PMCID: PMC8719061 DOI: 10.3389/fmicb.2021.750556] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2021] [Accepted: 11/22/2021] [Indexed: 12/13/2022] Open
Abstract
Silver nanoparticles (AgNPs) and antimicrobial peptides or proteins (AMPs/APs) are both considered as promising platforms for the development of novel therapeutic agents effective against the growing number of drug-resistant pathogens. The observed synergy of their antibacterial activity suggested the prospect of introducing antimicrobial peptides or small antimicrobial proteins into the gelatinized coating of AgNPs. Conjugates with protegrin-1, indolicidin, protamine, histones, and lysozyme were comparatively tested for their antibacterial properties and compared with unconjugated nanoparticles and antimicrobial polypeptides alone. Their toxic effects were similarly tested against both normal eukaryotic cells (human erythrocytes, peripheral blood mononuclear cells, neutrophils, and dermal fibroblasts) and tumor cells (human erythromyeloid leukemia K562 and human histiocytic lymphoma U937 cell lines). The AMPs/APs retained their ability to enhance the antibacterial activity of AgNPs against both Gram-positive and Gram-negative bacteria, including drug-resistant strains, when conjugated to the AgNP surface. The small, membranolytic protegrin-1 was the most efficient, suggesting that a short, rigid structure is not a limiting factor despite the constraints imposed by binding to the nanoparticle. Some of the conjugated AMPs/APs clearly affected the ability of nanoparticle to permeabilize the outer membrane of Escherichia coli, but none of the conjugated AgNPs acquired the capacity to permeabilize its cytoplasmic membrane, regardless of the membranolytic potency of the bound polypeptide. Low hemolytic activity was also found for all AgNP-AMP/AP conjugates, regardless of the hemolytic activity of the free polypeptides, making conjugation a promising strategy not only to enhance their antimicrobial potential but also to effectively reduce the toxicity of membranolytic AMPs. The observation that metabolic processes and O2 consumption in bacteria were efficiently inhibited by all forms of AgNPs is the most likely explanation for their rapid and bactericidal action. AMP-dependent properties in the activity pattern of various conjugates toward eukaryotic cells suggest that immunomodulatory, wound-healing, and other effects of the polypeptides are at least partially transferred to the nanoparticles, so that functionalization of AgNPs may have effects beyond just modulation of direct antibacterial activity. In addition, some conjugated nanoparticles are selectively toxic to tumor cells. However, caution is required as not all modulatory effects are necessarily beneficial to normal host cells.
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Affiliation(s)
- Maria S. Zharkova
- World-Class Research Center “Center for Personalized Medicine”, FSBSI Institute of Experimental Medicine, Saint Petersburg, Russia
| | - Olga Yu. Golubeva
- Laboratory of the Nanostructures Research, Institute of Silicate Chemistry, Russian Academy of Sciences, Saint Petersburg, Russia
| | - Dmitriy S. Orlov
- World-Class Research Center “Center for Personalized Medicine”, FSBSI Institute of Experimental Medicine, Saint Petersburg, Russia
| | - Elizaveta V. Vladimirova
- World-Class Research Center “Center for Personalized Medicine”, FSBSI Institute of Experimental Medicine, Saint Petersburg, Russia
| | - Alexander V. Dmitriev
- World-Class Research Center “Center for Personalized Medicine”, FSBSI Institute of Experimental Medicine, Saint Petersburg, Russia
| | - Alessandro Tossi
- Department of Life Sciences, University of Trieste, Trieste, Italy
| | - Olga V. Shamova
- World-Class Research Center “Center for Personalized Medicine”, FSBSI Institute of Experimental Medicine, Saint Petersburg, Russia
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8
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Somu P, Paul S. Surface conjugation of curcumin with self-assembled lysozyme nanoparticle enhanced its bioavailability and therapeutic efficacy in multiple cancer cells. J Mol Liq 2021. [DOI: 10.1016/j.molliq.2021.116623] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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9
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Attri P, Kaushik NK, Kaushik N, Hammerschmid D, Privat-Maldonado A, De Backer J, Shiratani M, Choi EH, Bogaerts A. Plasma treatment causes structural modifications in lysozyme, and increases cytotoxicity towards cancer cells. Int J Biol Macromol 2021; 182:1724-1736. [PMID: 34051258 DOI: 10.1016/j.ijbiomac.2021.05.146] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2021] [Revised: 05/19/2021] [Accepted: 05/21/2021] [Indexed: 02/07/2023]
Abstract
Bacterial and mammalian proteins, such as lysozyme, are gaining increasing interest as anticancer drugs. This study aims to modify the lysozyme structure using cold atmospheric plasma to boost its cancer cell killing effect. We investigated the structure at acidic and neutral pH using various experimental techniques (circular dichroism, fluorescence, and mass spectrometry) and molecular dynamics simulations. The controlled structural modification of lysozyme at neutral pH enhances its activity, while the activity was lost at acidic pH at the same treatment conditions. Indeed, a larger number of amino acids were oxidized at acidic pH after plasma treatment, which results in a greater distortion of the lysozyme structure, whereas only limited structural changes were observed in lysozyme after plasma treatment at neutral pH. We found that the plasma-treated lysozyme significantly induced apoptosis to the cancer cells. Our results reveal that plasma-treated lysozyme could have potential as a new cancer cell killing drug.
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Affiliation(s)
- Pankaj Attri
- Center of Plasma Nano-interface Engineering, Kyushu University, Fukuoka 819-0395, Japan; Graduate School of Information Science and Electrical Engineering, Kyushu University, Fukuoka 819-0395, Japan; Research Group PLASMANT, Department of Chemistry, University of Antwerp, Antwerp, Belgium.
| | - Nagendra Kumar Kaushik
- Department of Electrical and Biological Physics, Kwangwoon University, Seoul 01897, Republic of Korea
| | - Neha Kaushik
- Department of Biotechnology, College of Engineering, University of Suwon, Hwaseong 18323, Republic of Korea
| | - Dietmar Hammerschmid
- Research Group PPES, Department of Biomedical Sciences, University of Antwerp, Universiteitsplein 1, Antwerp, Belgium
| | | | - Joey De Backer
- Research Group PPES, Department of Biomedical Sciences, University of Antwerp, Universiteitsplein 1, Antwerp, Belgium
| | - Masaharu Shiratani
- Center of Plasma Nano-interface Engineering, Kyushu University, Fukuoka 819-0395, Japan; Graduate School of Information Science and Electrical Engineering, Kyushu University, Fukuoka 819-0395, Japan
| | - Eun Ha Choi
- Department of Electrical and Biological Physics, Kwangwoon University, Seoul 01897, Republic of Korea
| | - Annemie Bogaerts
- Research Group PLASMANT, Department of Chemistry, University of Antwerp, Antwerp, Belgium
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10
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Ali MS, Waseem M, Subbarao N, Al-Lohedan HA. Noncovalent molecular interactions between antineoplastic drug gemcitabine and a carrier protein identified through spectroscopic and in silico methods. Int J Biol Macromol 2021; 182:993-1002. [PMID: 33857514 DOI: 10.1016/j.ijbiomac.2021.04.049] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2021] [Revised: 03/31/2021] [Accepted: 04/07/2021] [Indexed: 12/11/2022]
Abstract
Herein we have studied the noncovalent molecular interactions between hen egg white lysozyme (HEWL) and the commonly employed antineoplastic drug gemcitabine through the cumulative implementation of spectroscopic techniques and in silico approaches. The formation of a complex between HEWL and gemcitabine was made evident by the differences between the UV-visible spectra of the protein and protein-gemcitabine complex. Fluorescence quenching of HEWL by gemcitabine was hardly detectable at room temperature, but it became prominent at higher temperatures. Very low values for the bimolecular quenching constant and the non-reciprocal dependence of quenching on temperature indicated that dynamic quenching was taking place. Analysis of experimental data indicated that the interaction was dominated by hydrophobic forces, while the results of a computational investigation suggested the concomitant contribution of hydrogen bonding. Gemcitabine binding induced modifications of the secondary structure of HEWL by slightly increasing the α-helical content of the protein. Finally, gemcitabine binding site was inferred to be located in HEWL big hydrophobic cavity.
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Affiliation(s)
- Mohd Sajid Ali
- Department of Chemistry, King Saud University, P.O. Box-2455, Riyadh 11451, Saudi Arabia.
| | - Mohd Waseem
- School of Computational and Integrative Science, Jawaharlal Nehru University, New Delhi, India
| | - Naidu Subbarao
- School of Computational and Integrative Science, Jawaharlal Nehru University, New Delhi, India
| | - Hamad A Al-Lohedan
- Department of Chemistry, King Saud University, P.O. Box-2455, Riyadh 11451, Saudi Arabia
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11
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Alveroglu E, İlker N, Shah MT, Rajar K, Gokceoren AT, Koc K. Effects of gel morphology on the lysozyme adsorption and desorption kinetics of temperature sensitive magnetic gel composites. Colloids Surf B Biointerfaces 2019; 181:981-988. [DOI: 10.1016/j.colsurfb.2019.05.062] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2019] [Revised: 05/01/2019] [Accepted: 05/24/2019] [Indexed: 10/26/2022]
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12
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Khan MI, Dowarha D, Katte R, Chou RH, Filipek A, Yu C. Lysozyme as the anti-proliferative agent to block the interaction between S100A6 and the RAGE V domain. PLoS One 2019; 14:e0216427. [PMID: 31071146 PMCID: PMC6508705 DOI: 10.1371/journal.pone.0216427] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2019] [Accepted: 04/20/2019] [Indexed: 12/18/2022] Open
Abstract
In this report, using NMR and molecular modeling, we have studied the structure of lysozyme-S100A6 complex and the influence of tranilast [N-(3, 4-dimethoxycinnamoyl) anthranilic acid], an antiallergic drug which binds to lysozyme, on lysozyme-S100A6 and S100A6-RAGE complex formation and, finally, on cell proliferation. We have found that tranilast may block the S100A6-lysozyme interaction and enhance binding of S100A6 to RAGE. Using WST1 assay, we have found that lysozyme, most probably by blocking the interaction between S100A6 and RAGE, inhibits cell proliferation while tranilast may reverse this effect by binding to lysozyme. In conclusion, studies presented in this work, describing the protein-protein/-drug interactions, are of great importance for designing new therapies to treat diseases associated with cell proliferation such as cancers.
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Affiliation(s)
- Md. Imran Khan
- National Tsing Hua University, Chemistry Department, Hsinchu, Taiwan
| | - Deepu Dowarha
- National Tsing Hua University, Chemistry Department, Hsinchu, Taiwan
| | - Revansiddha Katte
- National Tsing Hua University, Chemistry Department, Hsinchu, Taiwan
| | - Ruey-Hwang Chou
- Graduate Institute of Biomedical Sciences and Center for Molecular Medicine, China Medical University, Taichung, Taiwan
- Department of Biotechnology, Asia University, Taichung, Taiwan
| | - Anna Filipek
- Laboratory of Calcium Binding Proteins, Nencki Institute of Experimental Biology Polish Academy of Sciences, Warsaw, Poland
| | - Chin Yu
- National Tsing Hua University, Chemistry Department, Hsinchu, Taiwan
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13
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Bamburowicz-Klimkowska M, Poplawska M, Grudzinski IP. Nanocomposites as biomolecules delivery agents in nanomedicine. J Nanobiotechnology 2019; 17:48. [PMID: 30943985 PMCID: PMC6448271 DOI: 10.1186/s12951-019-0479-x] [Citation(s) in RCA: 46] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2018] [Accepted: 03/18/2019] [Indexed: 02/08/2023] Open
Abstract
Nanoparticles (NPs) are atomic clusters of crystalline or amorphous structure that possess unique physical and chemical properties associated with a size range of between 1 and 100 nm. Their nano-sized dimensions, which are in the same range as those of vital biomolecules, such as antibodies, membrane receptors, nucleic acids, and proteins, allow them to interact with different structures within living organisms. Because of these features, numerous nanoparticles are used in medicine as delivery agents for biomolecules. However, off-target drug delivery can cause serious side effects to normal tissues and organs. Considering this issue, it is essential to develop bioengineering strategies to significantly reduce systemic toxicity and improve therapeutic effect. In contrast to passive delivery, nanosystems enable to obtain enhanced therapeutic efficacy, decrease the possibility of drug resistance, and reduce side effects of "conventional" therapy in cancers. The present review provides an overview of the most recent (mostly last 3 years) achievements related to different biomolecules used to enable targeting capabilities of highly diverse nanoparticles. These include monoclonal antibodies, receptor-specific peptides or proteins, deoxyribonucleic acids, ribonucleic acids, [DNA/RNA] aptamers, and small molecules such as folates, and even vitamins or carbohydrates.
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Affiliation(s)
| | - Magdalena Poplawska
- Department of Organic Chemistry, Faculty of Chemistry, Warsaw University of Technology, Noakowskiego 3 Str, 00-664, Warsaw, Poland
| | - Ireneusz P Grudzinski
- Department of Applied Toxicology, Faculty of Pharmacy, Medical University of Warsaw, Banacha 1 Str, 02-097, Warsaw, Poland.
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14
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Du FK, Zhang H, Tan XC, Yan J, Liu M, Chen X, Wu YY, Feng DF, Chen QY, Cen JM, Liu SG, Qiu YQ, Han HY. Ru(bpy) 32+-Silica@Poly-L-lysine-Au as labels for electrochemiluminescence lysozyme aptasensor based on 3D graphene. Biosens Bioelectron 2018; 106:50-56. [PMID: 29414088 DOI: 10.1016/j.bios.2018.01.059] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2017] [Revised: 01/21/2018] [Accepted: 01/26/2018] [Indexed: 12/11/2022]
Abstract
In this work, the feasibility of a novel sensitive electrochemiluminescence aptasensor for the detection of lysozyme using Ru(bpy)32+-Silica@Poly-L-lysine-Au (RuSiNPs@PLL-Au) nanocomposites labeling as an indicator was demonstrated. The substrate electrode of the aptasensor was prepared by depositing gold nanoparticles (AuNPs) on 3D graphene-modified electrode. The lysozyme binding aptamer (LBA) was attached to the 3D graphene/AuNPs electrode through gold-thiol affinity, hybridized with a complementary single-strand DNA (CDNA) of the lysozyme aptamer labeled by RuSiNPs@PLL-Au as an electrochemiluminescence intensity amplifier. Thanks to the synergistic amplification of the 3D graphene, the AuNPs and RuSiNPs@PLL-Au NPs linked to Ru(bpy)32+-ECL further enhanced the ECL intensity of the aptasensor. In presence of lysozyme, the CDNA segment of the self-assembled duplex was displaced by the lysozyme, resulting in decreased electrochemiluminescence signal. Under the optimized conditions, the decrease in electrochemiluminescence intensity varied proportionally with the logarithmic concentration of the lysozyme from 2.25 × 10-12 to 5.0 × 10-8 mol L-1, and the detection limit was estimated to 7.5 × 10-13 mol L-1. The aptasensor was further tested in real samples and found reliable for the detection of lysozyme, thus holding great potential application in food safety researches and bioassay analysis.
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Affiliation(s)
- Fang-Kai Du
- Guangxi Key Laboratory of Chemistry and Engineering of Forest Products, Key Laboratory of Guangxi Colleges and Universities for food safety and pharmaceutical analytical chemistry, School of Chemistry and Chemical Engineering, Guangxi University for Nationalities, Nanning 530008, PR China
| | - Hui Zhang
- Guangxi Key Laboratory of Chemistry and Engineering of Forest Products, Key Laboratory of Guangxi Colleges and Universities for food safety and pharmaceutical analytical chemistry, School of Chemistry and Chemical Engineering, Guangxi University for Nationalities, Nanning 530008, PR China
| | - Xue-Cai Tan
- Guangxi Key Laboratory of Chemistry and Engineering of Forest Products, Key Laboratory of Guangxi Colleges and Universities for food safety and pharmaceutical analytical chemistry, School of Chemistry and Chemical Engineering, Guangxi University for Nationalities, Nanning 530008, PR China.
| | - Jun Yan
- Guangxi Key Laboratory of Chemistry and Engineering of Forest Products, Key Laboratory of Guangxi Colleges and Universities for food safety and pharmaceutical analytical chemistry, School of Chemistry and Chemical Engineering, Guangxi University for Nationalities, Nanning 530008, PR China
| | - Min Liu
- Guangxi Key Laboratory of Chemistry and Engineering of Forest Products, Key Laboratory of Guangxi Colleges and Universities for food safety and pharmaceutical analytical chemistry, School of Chemistry and Chemical Engineering, Guangxi University for Nationalities, Nanning 530008, PR China
| | - Xiao Chen
- Guangxi Key Laboratory of Chemistry and Engineering of Forest Products, Key Laboratory of Guangxi Colleges and Universities for food safety and pharmaceutical analytical chemistry, School of Chemistry and Chemical Engineering, Guangxi University for Nationalities, Nanning 530008, PR China
| | - Ye-Yu Wu
- Guangxi Key Laboratory of Chemistry and Engineering of Forest Products, Key Laboratory of Guangxi Colleges and Universities for food safety and pharmaceutical analytical chemistry, School of Chemistry and Chemical Engineering, Guangxi University for Nationalities, Nanning 530008, PR China
| | - De-Fen Feng
- Guangxi Key Laboratory of Chemistry and Engineering of Forest Products, Key Laboratory of Guangxi Colleges and Universities for food safety and pharmaceutical analytical chemistry, School of Chemistry and Chemical Engineering, Guangxi University for Nationalities, Nanning 530008, PR China
| | - Quan-You Chen
- Guangxi Key Laboratory of Chemistry and Engineering of Forest Products, Key Laboratory of Guangxi Colleges and Universities for food safety and pharmaceutical analytical chemistry, School of Chemistry and Chemical Engineering, Guangxi University for Nationalities, Nanning 530008, PR China
| | - Jian-Mei Cen
- Guangxi Key Laboratory of Chemistry and Engineering of Forest Products, Key Laboratory of Guangxi Colleges and Universities for food safety and pharmaceutical analytical chemistry, School of Chemistry and Chemical Engineering, Guangxi University for Nationalities, Nanning 530008, PR China
| | - Shao-Gang Liu
- Guangxi Key Laboratory of Chemistry and Engineering of Forest Products, Key Laboratory of Guangxi Colleges and Universities for food safety and pharmaceutical analytical chemistry, School of Chemistry and Chemical Engineering, Guangxi University for Nationalities, Nanning 530008, PR China
| | - Yu-Qin Qiu
- Guangxi Key Laboratory of Chemistry and Engineering of Forest Products, Key Laboratory of Guangxi Colleges and Universities for food safety and pharmaceutical analytical chemistry, School of Chemistry and Chemical Engineering, Guangxi University for Nationalities, Nanning 530008, PR China
| | - He-You Han
- Guangxi Key Laboratory of Chemistry and Engineering of Forest Products, Key Laboratory of Guangxi Colleges and Universities for food safety and pharmaceutical analytical chemistry, School of Chemistry and Chemical Engineering, Guangxi University for Nationalities, Nanning 530008, PR China; State Key Laboratory of Agricultural Microbiology, College of Science, College of Food Science and Technology, Huazhong Agricultural University, Wuhan 430070, PR China
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Hirsch DB, Baieli MF, Urtasun N, Lázaro- Martínez JM, Glisoni RJ, Miranda MV, Cascone O, Wolman FJ. Sulfanilic acid-modified chitosan mini-spheres and their application for lysozyme purification from egg white. Biotechnol Prog 2017; 34:387-396. [DOI: 10.1002/btpr.2588] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2017] [Revised: 11/10/2017] [Indexed: 11/08/2022]
Affiliation(s)
- Daniela B. Hirsch
- Universidad de Buenos Aires, Facultad de Farmacia y Bioquímica, Cátedra de Biotecnología. Junín 956, 1113 Buenos Aires; Argentina
- CONICET-Universidad de Buenos Aires, Instituto de Nanobiotecnología (NANOBIOTEC), Junín 956, 1113 Buenos Aires; Argentina
| | - María F. Baieli
- Universidad de Buenos Aires, Facultad de Farmacia y Bioquímica, Cátedra de Biotecnología. Junín 956, 1113 Buenos Aires; Argentina
- CONICET-Universidad de Buenos Aires, Instituto de Nanobiotecnología (NANOBIOTEC), Junín 956, 1113 Buenos Aires; Argentina
| | - Nicolás Urtasun
- Universidad de Buenos Aires, Facultad de Farmacia y Bioquímica, Cátedra de Biotecnología. Junín 956, 1113 Buenos Aires; Argentina
- CONICET-Universidad de Buenos Aires, Instituto de Nanobiotecnología (NANOBIOTEC), Junín 956, 1113 Buenos Aires; Argentina
| | - Juan M. Lázaro- Martínez
- Universidad de Buenos Aires, Facultad de Farmacia y Bioquímica, Departamento de Química Orgánica, Junín 956 (C1113AAD); Buenos Aires Argentina
- CONICET-Universidad de Buenos Aires, Instituto de Química y Fisicoquímica Biológicas (IQUIFIB), Junín 956 (C1113AAD); Buenos Aires Argentina
| | - Romina J. Glisoni
- CONICET-Universidad de Buenos Aires, Instituto de Nanobiotecnología (NANOBIOTEC), Junín 956, 1113 Buenos Aires; Argentina
- Universidad de Buenos Aires, Facultad de Farmacia y Bioquímica, Cátedra de Tecnología Farmacéutica II. Junín 956, 1113 Buenos Aires; Argentina
| | - María V. Miranda
- Universidad de Buenos Aires, Facultad de Farmacia y Bioquímica, Cátedra de Biotecnología. Junín 956, 1113 Buenos Aires; Argentina
- CONICET-Universidad de Buenos Aires, Instituto de Nanobiotecnología (NANOBIOTEC), Junín 956, 1113 Buenos Aires; Argentina
| | - Osvaldo Cascone
- Universidad de Buenos Aires, Facultad de Farmacia y Bioquímica, Cátedra de Biotecnología. Junín 956, 1113 Buenos Aires; Argentina
- CONICET-Universidad de Buenos Aires, Instituto de Nanobiotecnología (NANOBIOTEC), Junín 956, 1113 Buenos Aires; Argentina
| | - Federico J. Wolman
- Universidad de Buenos Aires, Facultad de Farmacia y Bioquímica, Cátedra de Biotecnología. Junín 956, 1113 Buenos Aires; Argentina
- CONICET-Universidad de Buenos Aires, Instituto de Nanobiotecnología (NANOBIOTEC), Junín 956, 1113 Buenos Aires; Argentina
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16
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Yoo BC, Yeo SG. Identification of CEA-interacting proteins in colon cancer cells and their changes in expression after irradiation. Radiat Oncol J 2017; 35:281-288. [PMID: 28881503 PMCID: PMC5654139 DOI: 10.3857/roj.2017.00255] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2017] [Revised: 07/16/2017] [Accepted: 07/31/2017] [Indexed: 01/16/2023] Open
Abstract
Purpose The serum carcinoembryonic antigen (CEA) level has been recognized as a prognostic factor in colorectal cancer, and associated with response of rectal cancer to radiotherapy. This study aimed to identify CEA-interacting proteins in colon cancer cells and observe post-irradiation changes in their expression. Materials and Methods CEA expression in colon cancer cells was examined by Western blot analysis. Using an anti-CEA antibody or IgG as a negative control, immunoprecipitation was performed in colon cancer cell lysates. CEA and IgG immunoprecipitates were used for liquid chromatography–tandem mass spectrometry (LC-MS/MS) analysis. Proteins identified in the CEA immunoprecipitates but not in the IgG immunoprecipitates were selected as CEA-interacting proteins. After radiation treatment, changes in expression of CEA-interacting proteins were monitored by Western blot analysis. Results CEA expression was higher in SNU-81 cells compared with LoVo cells. The membrane localization of CEA limited the immunoprecipitation results and thus the number of CEA-interacting proteins identified. Only the Ras-related protein Rab-6B and lysozyme C were identified as CEA-interacting proteins in LoVo and SNU-81 cells, respectively. Lysozyme C was detected only in SNU-81, and CEA expression was differently regulated in two cell lines; it was down-regulated in LoVo but up-regulated in SNU-81 in radiation dosage-dependent manner. Conclusion CEA-mediated radiation response appears to vary, depending on the characteristics of individual cancer cells. The lysozyme C and Rab subfamily proteins may play a role in the link between CEA and tumor response to radiation, although further studies are needed to clarify functional roles of the identified proteins.
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Affiliation(s)
- Byong Chul Yoo
- Colorectal Cancer Branch, Research Institute, National Cancer Center, Goyang, Korea
| | - Seung-Gu Yeo
- Department of Radiation Oncology, Soonchunhyang University College of Medicine, Soonchunhyang University Hospital, Cheonan, Korea
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Sheng L, Wang J, Huang M, Xu Q, Ma M. The changes of secondary structures and properties of lysozyme along with the egg storage. Int J Biol Macromol 2016; 92:600-606. [DOI: 10.1016/j.ijbiomac.2016.07.068] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2016] [Revised: 07/18/2016] [Accepted: 07/21/2016] [Indexed: 10/21/2022]
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18
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Efficient purification of lysozyme from egg white by 2-mercapto-5-benzimidazolesulfonic acid modified Fe 3 O 4 /Au nanoparticles. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2016; 59:213-217. [DOI: 10.1016/j.msec.2015.10.009] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/26/2015] [Revised: 09/16/2015] [Accepted: 10/02/2015] [Indexed: 02/05/2023]
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19
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Zhang Z, Zhang S, He L, Peng D, Yan F, Wang M, Zhao J, Zhang H, Fang S. Feasible electrochemical biosensor based on plasma polymerization-assisted composite of polyacrylic acid and hollow TiO2 spheres for sensitively detecting lysozyme. Biosens Bioelectron 2015; 74:384-90. [PMID: 26164009 DOI: 10.1016/j.bios.2015.06.062] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2015] [Revised: 06/15/2015] [Accepted: 06/25/2015] [Indexed: 11/19/2022]
Abstract
A composite made of polyacrylic acid and hollow TiO2 spheres (TiO2@PPAA) was prepared by the plasma polymerization method and subsequently used as an electrode material for detecting lysozyme. The chemical structure, surface morphology, and electrochemical performance of the TiO2@PPAA composite were mainly affected by the plasma input power used during plasma polymerization. After optimizing plasma conditions, aptamer strands exhibited high adsorption affinity toward the surface of TiO2@PPAA composite via synergistic effects between TiO2 and PPAA. Electrochemical impedance spectroscopy results showed that the developed TiO2@PPAA aptasensor presents highly sensitive detection ability toward lysozyme; the limit of detection of the proposed aptasensor is 0.015 ng mL(-1) (1.04 pM) within the range of 0.05-100 ng mL(-1) in terms of 3σ value. The film further showed excellent selectivity toward lysozyme in the presence of interfering proteins, such as thrombin, bovine serum albumin, and immunoglobulin E. Thus, this aptasensing strategy might broaden the applications of plasma polymerized nanomaterials in the field of biomedical research and early clinical diagnosis.
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Affiliation(s)
- Zhihong Zhang
- Henan Collaborative Innovation Center of Environmental Pollution Control and Ecological Restoration, Zhengzhou University of Light Industry, Zhengzhou, PR China; State Laboratory of Surface and Interface Science of Henan Province Zhengzhou University of Light Industry, No. 166, Science Avenue, Zhengzhou 450001, PR China.
| | - Shuai Zhang
- State Laboratory of Surface and Interface Science of Henan Province Zhengzhou University of Light Industry, No. 166, Science Avenue, Zhengzhou 450001, PR China
| | - Linghao He
- State Laboratory of Surface and Interface Science of Henan Province Zhengzhou University of Light Industry, No. 166, Science Avenue, Zhengzhou 450001, PR China
| | - Donglai Peng
- State Laboratory of Surface and Interface Science of Henan Province Zhengzhou University of Light Industry, No. 166, Science Avenue, Zhengzhou 450001, PR China
| | - Fufeng Yan
- State Laboratory of Surface and Interface Science of Henan Province Zhengzhou University of Light Industry, No. 166, Science Avenue, Zhengzhou 450001, PR China
| | - Minghua Wang
- Henan Collaborative Innovation Center of Environmental Pollution Control and Ecological Restoration, Zhengzhou University of Light Industry, Zhengzhou, PR China
| | - Jihong Zhao
- Henan Collaborative Innovation Center of Environmental Pollution Control and Ecological Restoration, Zhengzhou University of Light Industry, Zhengzhou, PR China
| | - Hongzhong Zhang
- Henan Collaborative Innovation Center of Environmental Pollution Control and Ecological Restoration, Zhengzhou University of Light Industry, Zhengzhou, PR China
| | - Shaoming Fang
- Henan Collaborative Innovation Center of Environmental Pollution Control and Ecological Restoration, Zhengzhou University of Light Industry, Zhengzhou, PR China; State Laboratory of Surface and Interface Science of Henan Province Zhengzhou University of Light Industry, No. 166, Science Avenue, Zhengzhou 450001, PR China.
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Stable self-assembled nanostructured hen egg white lysozyme exhibits strong anti-proliferative activity against breast cancer cells. Colloids Surf B Biointerfaces 2015; 130:237-45. [DOI: 10.1016/j.colsurfb.2015.04.017] [Citation(s) in RCA: 42] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2015] [Revised: 04/04/2015] [Accepted: 04/08/2015] [Indexed: 11/23/2022]
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21
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Yu Y, Zhou X, Wu S, Wei T, Yu L. High-yield production of the human lysozyme by Pichia pastoris SMD1168 using response surface methodology and high-cell-density fermentation. ELECTRON J BIOTECHN 2014. [DOI: 10.1016/j.ejbt.2014.09.006] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022] Open
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22
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Graphene-based lysozyme binding aptamer nanocomposite for label-free and sensitive lysozyme sensing. J Electroanal Chem (Lausanne) 2013. [DOI: 10.1016/j.jelechem.2013.05.010] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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23
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Wang HW, Yuan L, Zhao TL, Huang H, Chen H, Wu D. Altered enzymatic activity of lysozymes bound to variously sulfated chitosans. CHINESE JOURNAL OF POLYMER SCIENCE 2012. [DOI: 10.1007/s10118-012-1181-8] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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Expression of the antimicrobial peptide cecropin fused with human lysozyme in Escherichia coli. Appl Microbiol Biotechnol 2010; 87:2169-76. [PMID: 20499232 DOI: 10.1007/s00253-010-2606-3] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2010] [Revised: 04/02/2010] [Accepted: 04/05/2010] [Indexed: 10/19/2022]
Abstract
Lysozyme is an abundant, cationic antimicrobial protein that plays an important role in host defense. It targets the beta (1-4) glycosidic bond between N-acetylglucosamine and N-acetylmuramic residues that make up peptidoglycan, making lysozyme highly active against Gram-positive bacteria. However, lysozyme alone is inactive against Gram-negative bacteria because it cannot reach the peptidoglycan layer. Cecropins are cationic molecules with a wide range of antimicrobial activities. The main target for these peptides is the cytoplasmic membrane. We resume that cecopin may disrupt the outer membrane, giving the enzyme access to the peptidoglycan in cell wall. So in the present study, novel hybrid protein combining Musca domestica cecropin (Mdc) with human lysozyme (Hly) was designed. The DNA sequence encoding recombination fusion protein Mdc-hly was cloned into the pET-32a vector for protein expression in Escherichia coli strain BL21 (DE3). The protein was expressed as a His-tagged fusion protein, and the Mdc-hly was released from the fusion by enterokinase cleavage and separated from the carrier thioredoxin. Antimicrobial activity assays showed that the recombinant fusion protein Mdc-hly has improved in vitro antimicrobial activity and action spectrum compared to Mdc and hly. Mdc-hly may have important potential application as a future safely administered human drug and food additive.
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Yuan L, Yue Z, Chen H, Huang H, Zhao T. Biomacromolecular affinity: Interactions between lysozyme and regioselectively sulfated chitosan. Colloids Surf B Biointerfaces 2009; 73:346-50. [DOI: 10.1016/j.colsurfb.2009.06.003] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2009] [Revised: 06/02/2009] [Accepted: 06/02/2009] [Indexed: 11/28/2022]
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