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Guo J, Dai W, Wu W, Zhuang S, Zhang H, Cen L. Microfluidic nanoprecipitation of PEGylated PLGA nanoparticles with rapamycin and performance evaluation. JOURNAL OF BIOMATERIALS SCIENCE. POLYMER EDITION 2024; 35:1197-1213. [PMID: 38421916 DOI: 10.1080/09205063.2024.2321634] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/01/2023] [Accepted: 02/06/2024] [Indexed: 03/02/2024]
Abstract
Rapamycin (RAP) is currently being developed as potential antibreast cancer drug. However, its poor solubility completely limits its use. The aim of this study was to develop polyethylene glycol-poly(lactide-co-glycolide) (PEG-PLGA)-based nanoparticles (NPs) to load RAP via microfluidics with an appropriate polyethylene glycol (PEG) content to enhance the bioavailability of RAP. Polydimethylsiloxane (PDMS) chips with a Y-shaped channel were designed to obtain RAP-loaded PEG-PLGA NPs (RAP-PEG-PLGA). The entrapment efficiency (EE) and drug loading (DL) as well as release profile of RAP-PEG-PLGA were evaluated, and their resistance to plasma albumin adsorption of NPs with different PEG contents was evaluated and compared. RAW264.7 and 4T1 cells were used to assess the antiphagocytic and anticancer cells effect of NPs, respectively. RAP-PEG-PLGA of around 124 nm in size were successfully prepared with the EE of 82.0% and DL of 12.3%, and sustained release for around 40 d. A PEG relative content of 10% within the PEG-PLGA molecule was shown superior in resisting protein adsorption. RAP-PEG-PLGA inhibited the growth of breast cancer cells when the concentration was over 10 μg/mL, and the inhibition efficiency was significantly higher than free RAP. Hence, the current RAP-PEG-PLGA could be a potential therapeutic system for breast cancer treatment.
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Affiliation(s)
- Jiahao Guo
- Shanghai Key Laboratory of Multiphase Materials Chemical Engineering, Department of Product Engineering, School of Chemical Engineering, East China University of Science and Technology, Shanghai, China
| | - Wenjing Dai
- State Key Laboratory of Bioreactor Engineering, School of Bioengineering, East China University of Science and Technology, Shanghai, China
| | - Weiqian Wu
- Shanghai Key Laboratory of Multiphase Materials Chemical Engineering, Department of Product Engineering, School of Chemical Engineering, East China University of Science and Technology, Shanghai, China
| | - Shiya Zhuang
- Shanghai Key Laboratory of Multiphase Materials Chemical Engineering, Department of Product Engineering, School of Chemical Engineering, East China University of Science and Technology, Shanghai, China
| | - Huan Zhang
- Shanghai Key Laboratory of Multiphase Materials Chemical Engineering, Department of Product Engineering, School of Chemical Engineering, East China University of Science and Technology, Shanghai, China
| | - Lian Cen
- Shanghai Key Laboratory of Multiphase Materials Chemical Engineering, Department of Product Engineering, School of Chemical Engineering, East China University of Science and Technology, Shanghai, China
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Dias PB, Messias-Reason I, Hokazono K, Nisihara R. The role of mannose-binding lectin (MBL) in diabetic retinopathy: A scoping review. Immunol Lett 2024; 267:106863. [PMID: 38705482 DOI: 10.1016/j.imlet.2024.106863] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2024] [Revised: 04/24/2024] [Accepted: 04/30/2024] [Indexed: 05/07/2024]
Abstract
Diabetes mellitus (DM) is a chronic systemic disease characterized by a multifactorial nature, which may lead to several macro and microvascular complications. Diabetic retinopathy (DR) is one of the most severe microvascular complications of DM, which can result in permanent blindness. The mechanisms involved in the pathogenesis of DR are multiple and still poorly understood. Factors such as dysregulation of vascular regeneration, oxidative and hyperosmolar stress in addition to inflammatory processes have been associated with the pathogenesis of DR. Furthermore, compelling evidence shows that components of the immune system, including the complement system, play a relevant role in the development of the disease. Studies suggest that high concentrations of mannose-binding lectin (MBL), an essential component of the complement lectin pathway, may contribute to the development of DR in patients with DM. This review provides an update on the possible role of the complement system, specifically the lectin pathway, in the pathogenesis of DR and discusses the potential of MBL as a non-invasive biomarker for both, the presence and severity of DR, in addition to its potential as a therapeutic target for intervention strategies.
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Affiliation(s)
- Paula Basso Dias
- Clinical Hospital, Federal University of Paraná, Curitiba, Brazil; Department of Ophthalmology, Clinical Hospital, Federal University of Paraná, Curitiba, Brazil
| | | | - Kenzo Hokazono
- Department of Ophthalmology, Clinical Hospital, Federal University of Paraná, Curitiba, Brazil
| | - Renato Nisihara
- Clinical Hospital, Federal University of Paraná, Curitiba, Brazil; Department of Medicine, Positivo University, Curitiba, Brazil.
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3
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Fukuda M, Okanishi H, Ino D, Ono K, Kawamura S, Wakai E, Miyoshi T, Sato T, Ohta Y, Saito T, Saido TC, Inohara H, Kanai Y, Hibino H. Disturbance in the protein landscape of cochlear perilymph in an Alzheimer's disease mouse model. PLoS One 2024; 19:e0303375. [PMID: 38728348 PMCID: PMC11086917 DOI: 10.1371/journal.pone.0303375] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2024] [Accepted: 04/24/2024] [Indexed: 05/12/2024] Open
Abstract
Hearing loss is a pivotal risk factor for dementia. It has recently emerged that a disruption in the intercommunication between the cochlea and brain is a key process in the initiation and progression of this disease. However, whether the cochlear properties can be influenced by pathological signals associated with dementia remains unclear. In this study, using a mouse model of Alzheimer's disease (AD), we investigated the impacts of the AD-like amyloid β (Aβ) pathology in the brain on the cochlea. Despite little detectable change in the age-related shift of the hearing threshold, we observed quantitative and qualitative alterations in the protein profile in perilymph, an extracellular fluid that fills the path of sound waves in the cochlea. Our findings highlight the potential contribution of Aβ pathology in the brain to the disturbance of cochlear homeostasis.
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Affiliation(s)
- Masatoshi Fukuda
- Department of Pharmacology, Division of Glocal Pharmacology, Graduate School of Medicine, Osaka University, Osaka, Japan
- Department of Otorhinolaryngology, Graduate School of Medicine, Osaka University, Osaka, Japan
| | - Hiroki Okanishi
- Department of Bio-System Pharmacology, Graduate School of Medicine, Osaka University, Osaka, Japan
| | - Daisuke Ino
- Department of Pharmacology, Division of Glocal Pharmacology, Graduate School of Medicine, Osaka University, Osaka, Japan
| | - Kazuya Ono
- Department of Pharmacology, Division of Glocal Pharmacology, Graduate School of Medicine, Osaka University, Osaka, Japan
| | - Satoru Kawamura
- Department of Pharmacology, Division of Glocal Pharmacology, Graduate School of Medicine, Osaka University, Osaka, Japan
| | - Eri Wakai
- Department of Pharmacology, Division of Glocal Pharmacology, Graduate School of Medicine, Osaka University, Osaka, Japan
| | - Tsuyoshi Miyoshi
- Department of Otorhinolaryngology, Graduate School of Medicine, Osaka University, Osaka, Japan
| | - Takashi Sato
- Department of Otorhinolaryngology, Graduate School of Medicine, Osaka University, Osaka, Japan
| | - Yumi Ohta
- Department of Otorhinolaryngology, Graduate School of Medicine, Osaka University, Osaka, Japan
| | - Takashi Saito
- Department of Neurocognitive Science, Institute of Brain Science, Nagoya City University, Nagoya, Aichi, Japan
| | - Takaomi C. Saido
- Lab for Proteolytic Neuroscience, RIKEN Center for Brain Science, Wako, Saitama, Japan
| | - Hidenori Inohara
- Department of Otorhinolaryngology, Graduate School of Medicine, Osaka University, Osaka, Japan
| | - Yoshikatsu Kanai
- Department of Bio-System Pharmacology, Graduate School of Medicine, Osaka University, Osaka, Japan
- Institute for Open and Transdisciplinary Research Initiatives, Osaka, Japan
| | - Hiroshi Hibino
- Department of Pharmacology, Division of Glocal Pharmacology, Graduate School of Medicine, Osaka University, Osaka, Japan
- AMED-CREST, AMED, Osaka, Japan
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4
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Zou Y, Kamoi K, Zong Y, Zhang J, Yang M, Ohno-Matsui K. Vaccines and the Eye: Current Understanding of the Molecular and Immunological Effects of Vaccination on the Eye. Int J Mol Sci 2024; 25:4755. [PMID: 38731972 PMCID: PMC11084287 DOI: 10.3390/ijms25094755] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2024] [Revised: 04/18/2024] [Accepted: 04/24/2024] [Indexed: 05/13/2024] Open
Abstract
Vaccination is a public health cornerstone that protects against numerous infectious diseases. Despite its benefits, immunization implications on ocular health warrant thorough investigation, particularly in the context of vaccine-induced ocular inflammation. This review aimed to elucidate the complex interplay between vaccination and the eye, focusing on the molecular and immunological pathways implicated in vaccine-associated ocular adverse effects. Through an in-depth analysis of recent advancements and the existing literature, we explored various mechanisms of vaccine-induced ocular inflammation, such as direct infection by live attenuated vaccines, immune complex formation, adjuvant-induced autoimmunity, molecular mimicry, hypersensitivity reactions, PEG-induced allergic reactions, Type 1 IFN activation, free extracellular RNA, and specific components. We further examined the specific ocular conditions associated with vaccination, such as uveitis, optic neuritis, and retinitis, and discussed the potential impact of novel vaccines, including those against SARS-CoV-2. This review sheds light on the intricate relationships between vaccination, the immune system, and ocular tissues, offering insights into informed discussions and future research directions aimed at optimizing vaccine safety and ophthalmological care. Our analysis underscores the importance of vigilance and further research to understand and mitigate the ocular side effects of vaccines, thereby ensuring the continued success of vaccination programs, while preserving ocular health.
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Affiliation(s)
| | - Koju Kamoi
- Department of Ophthalmology and Visual Science, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo 113-8510, Japan; (Y.Z.); (Y.Z.); (J.Z.); (M.Y.); (K.O.-M.)
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5
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Samodova D, Hoel A, Hansen TH, Clausen L, Telléus GK, Marti HP, Pedersen O, Støving RK, Deshmukh AS. Plasma proteome profiling reveals metabolic and immunologic differences between Anorexia Nervosa subtypes. Metabolism 2024; 152:155760. [PMID: 38104923 DOI: 10.1016/j.metabol.2023.155760] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/08/2023] [Revised: 12/08/2023] [Accepted: 12/11/2023] [Indexed: 12/19/2023]
Abstract
AIMS/HYPOTHESIS Anorexia Nervosa (AN) is a severe psychiatric disorder of an unknown etiology with a crude mortality rate of about 5 % per decade, making it one of the deadliest of all psychiatric illnesses. AN is broadly classified into two main subtypes, restricting and binge/purging disorder. Despite extensive research efforts during several decades, the underlying pathophysiology of AN remains poorly understood. In this study, we aimed to identify novel protein biomarkers for AN by performing a proteomics analysis of fasting plasma samples from 78 females with AN (57 restrictive and 21 binge/purge type) and 70 healthy controls. METHODS Using state-of-the-art mass spectrometry-based proteomics technology in conjunction with an advanced bioinformatics pipeline, we quantify >500 plasma proteins. RESULTS Differential expression analysis and correlation of proteomics data with clinical variables led to identification of a panel of novel protein biomarkers with potential pathophysiological significance for AN. Our findings demonstrate evidence of a humoral immune system response, altered lipid metabolism and potential alteration of plasma cells in AN patients. Additionally, we stratified AN patients based on the quantified proteins and suggest a potential autoimmune nature in the restrictive subtype of AN. CONCLUSIONS/INTERPRETATION In summary, on top of biomarkers of AN subtypes, this study provides a comprehensive map of plasma proteins that constitute a resource for further studies of the pathophysiology of AN.
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Affiliation(s)
- Diana Samodova
- Novo Nordisk Foundation Center for Basic Metabolic Research, University of Copenhagen, Blegdamsvej 3B, 2200 Copenhagen, Denmark
| | - August Hoel
- Department of Clinical Medicine, University of Bergen, Bergen, Norway
| | - Tue Haldor Hansen
- Novo Nordisk Foundation Center for Basic Metabolic Research, University of Copenhagen, Blegdamsvej 3B, 2200 Copenhagen, Denmark
| | - Loa Clausen
- Department of Child and Adolescent Psychiatry, Aarhus University Hospital, Aarhus, Denmark; Department of Clinical Medicine, Faculty of Health, Aarhus University, Aarhus, Denmark
| | - Gry Kjaersdam Telléus
- Unit for Psychiatric Research, Aalborg University Hospital, Aalborg, Denmark; Department of Communication and Psychology, Aalborg University, Aalborg, Denmark
| | - Hans-Peter Marti
- Department of Clinical Medicine, University of Bergen, Bergen, Norway; Department of Medicine, Haukeland University Hospital, Bergen, Norway
| | - Oluf Pedersen
- Novo Nordisk Foundation Center for Basic Metabolic Research, University of Copenhagen, Blegdamsvej 3B, 2200 Copenhagen, Denmark; Center for Clinical Metabolic Research, Gentofte University Hospital, Copenhagen, Denmark
| | - Rene Klinkby Støving
- Center for Eating Disorders and Research Unit for Medical Endocrinology, Odense University Hospital, Mental Health Services in the Region of Southern Denmark, Denmark; Clinical Institute, University of Southern Denmark, Department of Endocrinology and Center for Eating Disorders, Odense University Hospital, J. B. Winsløws Vej 4, 5000 Odense, Denmark.
| | - Atul Shahaji Deshmukh
- Novo Nordisk Foundation Center for Basic Metabolic Research, University of Copenhagen, Blegdamsvej 3B, 2200 Copenhagen, Denmark.
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Polyak A, Harting H, Angrisani N, Herrmann T, Ehlert N, Meißner J, Willmann M, Al-Bazaz S, Ross TL, Bankstahl JP, Reifenrath J. Preparation and PET/CT imaging of implant directed 68Ga-labeled magnetic nanoporous silica nanoparticles. J Nanobiotechnology 2023; 21:270. [PMID: 37592318 PMCID: PMC10433681 DOI: 10.1186/s12951-023-02041-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2023] [Accepted: 07/31/2023] [Indexed: 08/19/2023] Open
Abstract
BACKGROUND Implant infections caused by biofilm forming bacteria are a major threat in orthopedic surgery. Delivering antibiotics directly to an implant affected by a bacterial biofilm via superparamagnetic nanoporous silica nanoparticles could present a promising approach. Nevertheless, short blood circulation half-life because of rapid interactions of nanoparticles with the host's immune system hinder them from being clinically used. The aim of this study was to determine the temporal in vivo resolution of magnetic nanoporous silica nanoparticle (MNPSNP) distribution and the effect of PEGylation and clodronate application using PET/CT imaging and gamma counting in an implant mouse model. METHODS PEGylated and non-PEGylated MNPSNPs were radiolabeled with gallium-68 (68Ga), implementing the chelator tris(hydroxypyridinone). 36 mice were included in the study, 24 mice received a magnetic implant subcutaneously on the left and a titanium implant on the right hind leg. MNPSNP pharmacokinetics and implant accumulation was analyzed in dependence on PEGylation and additional clodronate application. Subsequently gamma counting was performed for further final analysis. RESULTS The pharmacokinetics and biodistribution of all radiolabeled nanoparticles could clearly be visualized and followed by dynamic PET/CT imaging. Both variants of 68Ga-labeled MNPSNP accumulated mainly in liver and spleen. PEGylation of the nanoparticles already resulted in lower liver uptakes. Combination with macrophage depletion led to a highly significant effect whereas macrophage depletion alone could not reveal significant differences. Although MNPSNP accumulation around implants was low in comparison to the inner organs in PET/CT imaging, gamma counting displayed a significantly higher %I.D./g for the tissue surrounding the magnetic implants compared to the titanium control. Additional PEGylation and/or macrophage depletion revealed no significant differences regarding nanoparticle accumulation at the implantation site. CONCLUSION Tracking of 68Ga-labeled nanoparticles in a mouse model in the first critical hours post-injection by PET/CT imaging provided a better understanding of MNPSNP distribution, elimination and accumulation. Although PEGylation increases circulation time, nanoparticle accumulation at the implantation site was still insufficient for infection treatment and additional efforts are needed to increase local accumulation.
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Affiliation(s)
- Andras Polyak
- NIFE - Lower Saxony Centre for Biomedical Engineering, Implant Research and Development, Stadtfelddamm 34, 30625, Hannover, Germany
- Department of Prosthetic Dentistry and Biomedical Materials Science, Hannover Medical School, Carl-Neuberg-Straße 1, 30625, Hannover, Germany
- Department of Nuclear Medicine, Hannover Medical School, Carl-Neuberg-Straße 1, 30625, Hannover, Germany
| | - Heidi Harting
- NIFE - Lower Saxony Centre for Biomedical Engineering, Implant Research and Development, Stadtfelddamm 34, 30625, Hannover, Germany.
- Clinic for Orthopedic Surgery, Hannover Medical School, Carl-Neuberg-Straße 1, 30625, Hannover, Germany.
| | - Nina Angrisani
- NIFE - Lower Saxony Centre for Biomedical Engineering, Implant Research and Development, Stadtfelddamm 34, 30625, Hannover, Germany
- Clinic for Orthopedic Surgery, Hannover Medical School, Carl-Neuberg-Straße 1, 30625, Hannover, Germany
| | - Timo Herrmann
- Institute for Inorganic Chemistry, Leibniz University Hannover, Callinstraße 9, 30167, Hannover, Germany
| | - Nina Ehlert
- Institute for Inorganic Chemistry, Leibniz University Hannover, Callinstraße 9, 30167, Hannover, Germany
| | - Jessica Meißner
- Department of Pharmacology, Toxicology and Pharmacy, University of Veterinary Medicine Hanover, Foundation, Buenteweg 17, 30559, Hannover, Germany
| | - Michael Willmann
- Department of Nuclear Medicine, Hannover Medical School, Carl-Neuberg-Straße 1, 30625, Hannover, Germany
| | - Silav Al-Bazaz
- Department of Nuclear Medicine, Hannover Medical School, Carl-Neuberg-Straße 1, 30625, Hannover, Germany
| | - Tobias L Ross
- Department of Nuclear Medicine, Hannover Medical School, Carl-Neuberg-Straße 1, 30625, Hannover, Germany
| | - Jens P Bankstahl
- Department of Nuclear Medicine, Hannover Medical School, Carl-Neuberg-Straße 1, 30625, Hannover, Germany
| | - Janin Reifenrath
- NIFE - Lower Saxony Centre for Biomedical Engineering, Implant Research and Development, Stadtfelddamm 34, 30625, Hannover, Germany
- Clinic for Orthopedic Surgery, Hannover Medical School, Carl-Neuberg-Straße 1, 30625, Hannover, Germany
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7
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Shafaei N, Khorshidi S, Karkhaneh A. The immune-stealth polymeric coating on drug delivery nanocarriers: In vitro engineering and in vivo fate. J Biomater Appl 2023:8853282231185352. [PMID: 37480331 DOI: 10.1177/08853282231185352] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/24/2023]
Abstract
Although essential nanosystems such as nanoparticles and nanocarriers are desirable options for transporting various drug molecules into the biological environment, they rapidly remove from the circulatory system due to their interaction with multiple in vivo barriers, especially the immune barrier, which will result in their short-term effects. In order to improve their effectiveness and durability in the circulatory system, the polymer coatings can use to cover the surface of nanoparticles and nanocarriers to conceal them from the immune system. Due to their different properties (like charge, elasticity, and hydrophilicity/hydrophobicity), these coatings can improve drug delivery nanosystem durability and therapeutic applications. The mentioned coatings have different types and are divided into various categories, such as synthetic polymers, polysaccharides, and zwitterionic polymers. Each of these polymers has unique properties based on its category, origin, and chemical structure that make them suitable for producing stealth drug delivery nanocarriers. In this review article, we have tried to explain the importance of these diverse polymer coatings in determining the fate of drug nanocarriers and then introduced the different types of these coatings and, finally, described various methods that directly and indirectly analyze the nanocoatings to determine the stability of nanoparticles in the body.
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Affiliation(s)
- Nadia Shafaei
- Department of Biomedical Engineering, Amirkabir University of Technology, Tehran, Iran
| | - Sajedeh Khorshidi
- Department of Biomedical Engineering, Amirkabir University of Technology, Tehran, Iran
| | - Akbar Karkhaneh
- Department of Biomedical Engineering, Amirkabir University of Technology, Tehran, Iran
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8
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Tenchov R, Sasso JM, Zhou QA. PEGylated Lipid Nanoparticle Formulations: Immunological Safety and Efficiency Perspective. Bioconjug Chem 2023. [PMID: 37162501 DOI: 10.1021/acs.bioconjchem.3c00174] [Citation(s) in RCA: 27] [Impact Index Per Article: 27.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/11/2023]
Abstract
Lipid nanoparticles (LNPs) have been recognized as efficient vehicles to transport a large variety of therapeutics. Currently in the spotlight as important constituents of the COVID-19 mRNA vaccines, LNPs play a significant role in protecting and transporting mRNA to cells. As one of their key constituents, polyethylene glycol (PEG)-lipid conjugates are important in defining LNP physicochemical characteristics and biological activity. PEGylation has proven particularly efficient in conferring longer systemic circulation of LNPs, thus greatly improving their pharmacokinetics and efficiency. Along with revealing the benefits of PEG conjugates, studies have revealed unexpected immune reactions against PEGylated nanocarriers such as accelerated blood clearance (ABC), involving the production of anti-PEG antibodies at initial injection, which initiates accelerated blood clearance upon subsequent injections, as well as a hypersensitivity reaction referred to as complement activation-related pseudoallergy (CARPA). Further, data have been accumulated indicating consistent yet sometimes controversial correlations between various structural parameters of the PEG-lipids, the properties of the PEGylated LNPs, and the magnitude of the observed adverse effects. Detailed knowledge and comprehension of such correlations are of foremost importance in the efforts to diminish and eliminate the undesirable immune reactions and improve the safety and efficiency of the PEGylated medicines. Here, we present an overview based on analysis of data from the CAS Content Collection regarding the PEGylated LNP immunogenicity and overall safety concerns. A comprehensive summary has been compiled outlining how various structural parameters of the PEG-lipids affect the immune responses and activities of the LNPs, with regards to their efficiency in drug delivery. This Review is thus intended to serve as a helpful resource in understanding the current knowledge in the field, in an effort to further solve the remaining challenges and to achieve full potential.
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Affiliation(s)
- Rumiana Tenchov
- CAS, a division of the American Chemical Society, 2540 Olentangy River Road, Columbus, Ohio 43202, United States
| | - Janet M Sasso
- CAS, a division of the American Chemical Society, 2540 Olentangy River Road, Columbus, Ohio 43202, United States
| | - Qiongqiong Angela Zhou
- CAS, a division of the American Chemical Society, 2540 Olentangy River Road, Columbus, Ohio 43202, United States
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9
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Chen WA, Chang DY, Chen BM, Lin YC, Barenholz Y, Roffler SR. Antibodies against Poly(ethylene glycol) Activate Innate Immune Cells and Induce Hypersensitivity Reactions to PEGylated Nanomedicines. ACS NANO 2023; 17:5757-5772. [PMID: 36926834 PMCID: PMC10062034 DOI: 10.1021/acsnano.2c12193] [Citation(s) in RCA: 13] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/08/2022] [Accepted: 03/03/2023] [Indexed: 06/09/2023]
Abstract
Nanomedicines and macromolecular drugs can induce hypersensitivity reactions (HSRs) with symptoms ranging from flushing and breathing difficulties to hypothermia, hypotension, and death in the most severe cases. Because many normal individuals have pre-existing antibodies that bind to poly(ethylene glycol) (PEG), which is often present on the surface of nanomedicines and macromolecular drugs, we examined if and how anti-PEG antibodies induce HSRs to PEGylated liposomal doxorubicin (PLD). Anti-PEG IgG but not anti-PEG IgM induced symptoms of HSRs including hypothermia, altered lung function, and hypotension after PLD administration in C57BL/6 and nonobese diabetic/severe combined immunodeficiency (NOD/SCID) mice. Hypothermia was significantly reduced by blocking FcγRII/III, by depleting basophils, monocytes, neutrophils, or mast cells, and by inhibiting secretion of histamine and platelet-activating factor. Anti-PEG IgG also induced hypothermia in mice after administration of other PEGylated liposomes, nanoparticles, or proteins. Humanized anti-PEG IgG promoted binding of PEGylated nanoparticles to human immune cells and induced secretion of histamine from human basophils in the presence of PLD. Anti-PEG IgE could also induce hypersensitivity reactions in mice after administration of PLD. Our results demonstrate an important role for IgG antibodies in induction of HSRs to PEGylated nanomedicines through interaction with Fcγ receptors on innate immune cells and provide a deeper understanding of HSRs to PEGylated nanoparticles and macromolecular drugs that may facilitate development of safer nanomedicines.
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Affiliation(s)
- Wei-An Chen
- Institute
of Biomedical Sciences, Academia Sinica, Taipei 11529, Taiwan
| | - Deng-Yuan Chang
- Institute
of Biomedical Sciences, Academia Sinica, Taipei 11529, Taiwan
| | - Bing-Mae Chen
- Institute
of Biomedical Sciences, Academia Sinica, Taipei 11529, Taiwan
| | - Yi-Chen Lin
- Institute
of Biomedical Sciences, Academia Sinica, Taipei 11529, Taiwan
- Graduate
Institute of Life Sciences, National Defense
Medical Center, Taipei 11529, Taiwan
| | - Yechezekel Barenholz
- Department
of Biochemistry, Faculty of Medicine, The
Hebrew University, Jerusalem 91120, Israel
| | - Steve R. Roffler
- Institute
of Biomedical Sciences, Academia Sinica, Taipei 11529, Taiwan
- Graduate
Institute of Medicine, College of Medicine, Kaohsiung Medical University, Kaohsiung 80708, Taiwan
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10
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New Biocompatible Nanohydrogels of Predefined Sizes for Complexing Nucleic Acids. Pharmaceutics 2023; 15:pharmaceutics15020332. [PMID: 36839655 PMCID: PMC9967327 DOI: 10.3390/pharmaceutics15020332] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2022] [Revised: 01/15/2023] [Accepted: 01/16/2023] [Indexed: 01/20/2023] Open
Abstract
The advent of protein expression using m-RNA applied lately for treating the COVID pandemic, and gene editing using CRISPR/Cas9 technology for introducing DNA sequences at a specific site in the genome, are milestones for the urgent need of developing new nucleic acid delivery systems with improved delivery properties especially for in vivo applications. We have designed, synthesized, and characterized novel cross-linked monodispersed nanohydrogels (NHG's) with well-defined sizes ranging between 50-400 nm. The synthesis exploits the formation of self-assemblies generated upon heating a thermo-responsive mixture of monomers. Self-assemblies are formed and polymerized at high temperatures resulting in NHGs with sizes that are predetermined by the sizes of the intermediate self-assemblies. The obtained NHGs were chemically reduced to lead particles with highly positive zeta potential and low cell toxicity. The NHGs form complexes with DNA, and at optimal charge ratio the size of the complexes is concomitant with the size of the NHG's. Thus, the DNA is fully embedded inside the NHGs. The new NHGs and their DNA complexes are devoid of cell toxicity which together with their tunned sizes, make them potential tools for gene delivery and foreign protein expression.
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11
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Sandoval-García K, Alvarado-Mendoza AG, Jiménez-Avalos JA, García-Carvajal ZY, Olea-Rodríguez MA, Cajero-Zul LR, Nuño-Donlucas SM. Synthesis, characterization and evaluation of the toxicity, drug release ability and antibacterial capacity of nanocomposites of polyethylene glycol and functionalized carbon nanotubes. JOURNAL OF MACROMOLECULAR SCIENCE PART A-PURE AND APPLIED CHEMISTRY 2022. [DOI: 10.1080/10601325.2022.2145220] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Affiliation(s)
- Karina Sandoval-García
- Doctorado en Ciencias en Química, Centro Universitario de Ciencias Exactas e Ingenierías, Universidad de Guadalajara, Guadalajara, México
| | - Abraham G. Alvarado-Mendoza
- Departamento de Química, Centro Universitario de Ciencias Exactas e Ingenierías, Universidad de Guadalajara, Guadalajara, México
| | - Jorge A. Jiménez-Avalos
- Biotecnología Médica y Farmacéutica, Centro de Investigación y Asistencia en Tecnología y Diseño del Estado de Jalisco, Guadalajara, México
| | - Zaira Y. García-Carvajal
- Biotecnología Médica y Farmacéutica, Centro de Investigación y Asistencia en Tecnología y Diseño del Estado de Jalisco, Guadalajara, México
| | - María A. Olea-Rodríguez
- Departamento de Farmocología, Centro Universitario de Ciencias Exactas e Ingenierías, Universidad de Guadalajara, Guadalajara, México
| | - Leonardo R. Cajero-Zul
- Departamento de Ingeniería Química, Centro Universitario de Ciencias Exactas e Ingenierías, Universidad de Guadalajara, Guadalajara, México
| | - Sergio M. Nuño-Donlucas
- Departamento de Ingeniería Química, Centro Universitario de Ciencias Exactas e Ingenierías, Universidad de Guadalajara, Guadalajara, México
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12
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Delille F, Pu Y, Lequeux N, Pons T. Designing the Surface Chemistry of Inorganic Nanocrystals for Cancer Imaging and Therapy. Cancers (Basel) 2022; 14:2456. [PMID: 35626059 PMCID: PMC9139368 DOI: 10.3390/cancers14102456] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2022] [Revised: 05/10/2022] [Accepted: 05/12/2022] [Indexed: 12/27/2022] Open
Abstract
Inorganic nanocrystals, such as gold, iron oxide and semiconductor quantum dots, offer promising prospects for cancer diagnostics, imaging and therapy, due to their specific plasmonic, magnetic or fluorescent properties. The organic coating, or surface ligands, of these nanoparticles ensures their colloidal stability in complex biological fluids and enables their functionalization with targeting functions. It also controls the interactions of the nanoparticle with biomolecules in their environment. It therefore plays a crucial role in determining nanoparticle biodistribution and, ultimately, the imaging or therapeutic efficiency. This review summarizes the various strategies used to develop optimal surface chemistries for the in vivo preclinical and clinical application of inorganic nanocrystals. It discusses the current understanding of the influence of the nanoparticle surface chemistry on its colloidal stability, interaction with proteins, biodistribution and tumor uptake, and the requirements to develop an optimal surface chemistry.
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Affiliation(s)
- Fanny Delille
- Laboratoire de Physique et d’Etude des Matériaux, Ecole Supérieure de Physique et Chimie Industrielle, Université PSL (Paris Sciences & Lettres), Centre National de Recherche Scientifique, 75005 Paris, France; (F.D.); (Y.P.); (N.L.)
- Laboratoire de Physique et d’Etude des Matériaux, Centre National de Recherche Scientifique, Sorbonne Université, 75005 Paris, France
| | - Yuzhou Pu
- Laboratoire de Physique et d’Etude des Matériaux, Ecole Supérieure de Physique et Chimie Industrielle, Université PSL (Paris Sciences & Lettres), Centre National de Recherche Scientifique, 75005 Paris, France; (F.D.); (Y.P.); (N.L.)
- Laboratoire de Physique et d’Etude des Matériaux, Centre National de Recherche Scientifique, Sorbonne Université, 75005 Paris, France
| | - Nicolas Lequeux
- Laboratoire de Physique et d’Etude des Matériaux, Ecole Supérieure de Physique et Chimie Industrielle, Université PSL (Paris Sciences & Lettres), Centre National de Recherche Scientifique, 75005 Paris, France; (F.D.); (Y.P.); (N.L.)
- Laboratoire de Physique et d’Etude des Matériaux, Centre National de Recherche Scientifique, Sorbonne Université, 75005 Paris, France
| | - Thomas Pons
- Laboratoire de Physique et d’Etude des Matériaux, Ecole Supérieure de Physique et Chimie Industrielle, Université PSL (Paris Sciences & Lettres), Centre National de Recherche Scientifique, 75005 Paris, France; (F.D.); (Y.P.); (N.L.)
- Laboratoire de Physique et d’Etude des Matériaux, Centre National de Recherche Scientifique, Sorbonne Université, 75005 Paris, France
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13
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Gage M, Gard M, Thippeswamy T. Characterization of Cortical Glial Scars in the Diisopropylfluorophosphate (DFP) Rat Model of Epilepsy. Front Cell Dev Biol 2022; 10:867949. [PMID: 35372361 PMCID: PMC8966428 DOI: 10.3389/fcell.2022.867949] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2022] [Accepted: 03/03/2022] [Indexed: 12/17/2022] Open
Abstract
Glial scars have been observed following stab lesions in the spinal cord and brain but not observed and characterized in chemoconvulsant-induced epilepsy models. Epilepsy is a disorder characterized by spontaneous recurrent seizures and can be modeled in rodents. Diisopropylfluorophosphate (DFP) exposure, like other real-world organophosphate nerve agents (OPNAs) used in chemical warfare scenarios, can lead to the development of status epilepticus (SE). We have previously demonstrated that DFP-induced SE promotes epileptogenesis which is characterized by the development of spontaneous recurrent seizures (SRS), gliosis, and neurodegeneration. In this study, we report classical glial scars developed in the piriform cortex, but not in the hippocampus, by 8 days post-exposure. We challenged both male and female rats with 4–5 mg/kg DFP (s.c.) followed immediately by 2 mg/kg atropine sulfate (i.m.) and 25 mg/kg pralidoxime (i.m.) and one hour later by midazolam (i.m). Glial scars were present in the piriform cortex/amygdala region in 73% of the DFP treated animals. No scars were found in controls. Scars were characterized by a massive clustering of reactive microglia surrounded by hypertrophic reactive astrocytes. The core of the scars was filled with a significant increase of IBA1 and CD68 positive cells and a significant reduction in NeuN positive cells compared to the periphery of the scars. There was a significantly higher density of reactive GFAP, complement 3 (C3), and inducible nitric oxide synthase (iNOS) positive cells at the periphery of the scar compared to similar areas in controls. We found a significant increase in chondroitin sulfate proteoglycans (CS-56) in the periphery of the scars compared to a similar region in control brains. However, there was no change in TGF-β1 or TGF-β2 positive cells in or around the scars in DFP-exposed animals compared to controls. In contrast to stab-induced scars, we did not find fibroblasts (Thy1.1) in the scar core or periphery. There were sex differences with respect to the density of iNOS, CD68, NeuN, GFAP, C3 and CS-56 positive cells. This is the first report of cortical glial scars in rodents with systemic chemoconvulsant-induced SE. Further investigation could help to elucidate the mechanisms of scar development and mitigation strategies.
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Affiliation(s)
- Meghan Gage
- Department of Biomedical Sciences, College of Veterinary Medicine, Iowa State University, Ames, IA, United States
- Neuroscience Interdepartmental Program, Iowa State University, Ames, IA, United States
| | - Megan Gard
- Department of Biomedical Sciences, College of Veterinary Medicine, Iowa State University, Ames, IA, United States
| | - Thimmasettappa Thippeswamy
- Department of Biomedical Sciences, College of Veterinary Medicine, Iowa State University, Ames, IA, United States
- Neuroscience Interdepartmental Program, Iowa State University, Ames, IA, United States
- *Correspondence: Thimmasettappa Thippeswamy,
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14
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Qiu Y, Shen S, Yang Y, Wang W. An Excretory Protein of Echinococcus multilocularis Inhibits Complement Classical Pathway Activation. Infect Drug Resist 2022; 15:555-568. [PMID: 35228806 PMCID: PMC8881923 DOI: 10.2147/idr.s344075] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2021] [Accepted: 02/07/2022] [Indexed: 11/23/2022] Open
Abstract
Introduction Alveolar echinococcosis is a lethal zoonosis caused by Echinococcus multilocularis (E.m) larvae. The mechanism by which E.m evades host immune attacks and ensures long-term survival remains unexplained. The complement system is a cascade of sequentially activated complement proteins that results in opsonization-related phagocytosis or membrane lysis of invading organisms. Excretory/secretory proteins (ESPs) of parasites are the main antigens that induce the immune response and play important roles in the long-term survival. Methods We investigated the possibility that E.m inhibits complement activation through ESPs and examined the potential related mechanism. A haemolysis assay was used to determine if and how in vitro culture medium of E.m containing ESPs can inhibit complement activation. Potential ESPs were annotated using bioinformatics methods, and one ESP was subsequently expressed as a recombinant protein with a eukaryotic expression system. The ability of this protein to inhibit complement activation was also tested by haemolysis assay. Results These assays showed that in vitro culture medium of E.m inhibited activation of the complement classical pathway. EmuJ_000439500 encodes a protein containing seven Sushi domains, which was the only potential E.m-derived complement inhibitor (Em-CI, UniProt: A0A068Y4F2) annotated among the 653 ESPs. Recombinant Em-CI also displayed the ability to inhibit activation of the complement classical pathway. Discussion The discovery of Em-CI sheds light on the mechanism by which E.m escapes killing by the complement system and provides potential targets for immunotherapy for parasitic diseases.
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Affiliation(s)
- Yiwen Qiu
- Department of Liver Surgery and Liver Transplantation Center, West China Hospital of Sichuan University, Chengdu, People’s Republic of China
| | - Shu Shen
- Department of Liver Surgery and Liver Transplantation Center, West China Hospital of Sichuan University, Chengdu, People’s Republic of China
| | - Yi Yang
- Department of Liver Surgery and Liver Transplantation Center, West China Hospital of Sichuan University, Chengdu, People’s Republic of China
| | - Wentao Wang
- Department of Liver Surgery and Liver Transplantation Center, West China Hospital of Sichuan University, Chengdu, People’s Republic of China
- Correspondence: Wentao Wang, Department of Liver Surgery and Liver Transplantation Center, West China Hospital of Sichuan University, 37 Guoxue Road, Chengdu, 610041, People’s Republic of China, Tel +86 18980601895, Fax +86-028-85422871, Email
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15
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Ko NR, Lee SJ, Chandrasekaran AP, Tyagi A, Ramakrishna S, Kim SY, Kim DW, Pack CG, Oh SJ. Smart Vitamin Micelles as Cancer Nanomedicines for Enhanced Intracellular Delivery of Doxorubicin. Int J Mol Sci 2021; 22:ijms222011298. [PMID: 34681958 PMCID: PMC8538907 DOI: 10.3390/ijms222011298] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2021] [Revised: 10/09/2021] [Accepted: 10/18/2021] [Indexed: 01/26/2023] Open
Abstract
Chemotherapy is one of the most effective treatments for cancer. However, intracellular delivery of many anticancer drugs is hindered by their hydrophobicity and low molecular weight. Here, we describe highly biocompatible and biodegradable amphiphilic vitamin conjugates comprising hydrophobic vitamin E and hydrophilic vitamin B labeled with dual pH and glutathione-responsive degradable linkages. Vitamin-based micelles (vitamicelles), formed by self-assembly in aqueous solutions, were optimized based on their stability after encapsulation of doxorubicin (DOX). The resulting vitamicelles have great potential as vehicles for anticancer drugs because they show excellent biocompatibility (>94% after 48 h of incubation) and rapid biodegradability (>90% after 2.5 h). Compared with free DOX, DOX-loaded vitamicelles showed a markedly enhanced anticancer effect as they released the drug rapidly and inhibited drug efflux out of cells efficiently. By exploiting these advantages, this study not only provides a promising strategy for circumventing existing challenges regarding the delivery of anticancer drugs but also extends the utility of current DOX-induced chemotherapy.
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Affiliation(s)
- Na Re Ko
- Biomedical Research Center, Asan Institute for Life Sciences, Asan Medical Center, 88 Olympic-ro 43-gil, Songpa-gu, Seoul 05505, Korea; (N.R.K.); (D.W.K.)
- Department of Nuclear Medicine, Asan Medical Center, University of Ulsan College of Medicine, 88 Olympic-ro 43-gil, Songpa-gu, Seoul 05505, Korea;
| | - Sang Ju Lee
- Department of Nuclear Medicine, Asan Medical Center, University of Ulsan College of Medicine, 88 Olympic-ro 43-gil, Songpa-gu, Seoul 05505, Korea;
| | - Arun Pandian Chandrasekaran
- Graduate School of Biomedical Science and Engineering, Hanyang University, 222 Wangsimni-ro, Seongdong-gu, Seoul 04763, Korea; (A.P.C.); (A.T.); (S.R.)
| | - Apoorvi Tyagi
- Graduate School of Biomedical Science and Engineering, Hanyang University, 222 Wangsimni-ro, Seongdong-gu, Seoul 04763, Korea; (A.P.C.); (A.T.); (S.R.)
| | - Suresh Ramakrishna
- Graduate School of Biomedical Science and Engineering, Hanyang University, 222 Wangsimni-ro, Seongdong-gu, Seoul 04763, Korea; (A.P.C.); (A.T.); (S.R.)
- College of Medicine, Hanyang University, 222 Wangsimni-ro, Seongdong-gu, Seoul 04763, Korea
| | - Seog-Young Kim
- Department of Convergence Medicine, University of Ulsan College of Medicine, 88 Olympic-ro 43-gil, Songpa-gu, Seoul 05505, Korea; (S.-Y.K.); (C.-G.P.)
| | - Do Won Kim
- Biomedical Research Center, Asan Institute for Life Sciences, Asan Medical Center, 88 Olympic-ro 43-gil, Songpa-gu, Seoul 05505, Korea; (N.R.K.); (D.W.K.)
| | - Chan-Gi Pack
- Department of Convergence Medicine, University of Ulsan College of Medicine, 88 Olympic-ro 43-gil, Songpa-gu, Seoul 05505, Korea; (S.-Y.K.); (C.-G.P.)
| | - Seung Jun Oh
- Department of Nuclear Medicine, Asan Medical Center, University of Ulsan College of Medicine, 88 Olympic-ro 43-gil, Songpa-gu, Seoul 05505, Korea;
- Correspondence:
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16
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An intact complement system dampens cornea inflammation during acute primary HSV-1 infection. Sci Rep 2021; 11:10247. [PMID: 33986436 PMCID: PMC8119410 DOI: 10.1038/s41598-021-89818-9] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2021] [Accepted: 04/30/2021] [Indexed: 02/03/2023] Open
Abstract
Corneal transparency is an essential characteristic necessary for normal vision. In response to microbial infection, the integrity of the cornea can become compromised as a result of the inflammatory response and the ensuing tissue pathology including neovascularization (NV) and collagen lamellae destruction. We have previously found complement activation contributes to cornea pathology-specifically, denervation in response to HSV-1 infection. Therefore, we investigated whether the complement system also played a role in HSV-1-mediated neovascularization. Using wild type (WT) and complement component 3 deficient (C3 KO) mice infected with HSV-1, we found corneal NV was accelerated associated with an increase in inflammatory monocytes (CD11b+CCR2+CD115+/-Ly6G-Ly6Chigh), macrophages (CD11b+CCR2+CD115+Ly6G-Ly6Chigh) and a subpopulation of granulocytes/neutrophils (CD11b+CCR2-CD115+Ly6G+Ly6Clow). There were also increases in select pro-inflammatory and pro-angiogenic factors including IL-1α, matrix metalloproteinases (MMP)-2, MMP-3, MMP-8, CXCL1, CCL2, and VEGF-A that coincided with increased inflammation, neovascularization, and corneal opacity in the C3 KO mice. The difference in inflammation between WT and C3 KO mice was not driven by changes in virus titer. However, viral antigen clearance was hindered in C3 KO mouse corneas suggesting the complement system has a dynamic regulatory role within the cornea once an inflammatory cascade is initiated by HSV-1.
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17
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Kumar R, Santa Chalarca CF, Bockman MR, Bruggen CV, Grimme CJ, Dalal RJ, Hanson MG, Hexum JK, Reineke TM. Polymeric Delivery of Therapeutic Nucleic Acids. Chem Rev 2021; 121:11527-11652. [PMID: 33939409 DOI: 10.1021/acs.chemrev.0c00997] [Citation(s) in RCA: 128] [Impact Index Per Article: 42.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
The advent of genome editing has transformed the therapeutic landscape for several debilitating diseases, and the clinical outlook for gene therapeutics has never been more promising. The therapeutic potential of nucleic acids has been limited by a reliance on engineered viral vectors for delivery. Chemically defined polymers can remediate technological, regulatory, and clinical challenges associated with viral modes of gene delivery. Because of their scalability, versatility, and exquisite tunability, polymers are ideal biomaterial platforms for delivering nucleic acid payloads efficiently while minimizing immune response and cellular toxicity. While polymeric gene delivery has progressed significantly in the past four decades, clinical translation of polymeric vehicles faces several formidable challenges. The aim of our Account is to illustrate diverse concepts in designing polymeric vectors towards meeting therapeutic goals of in vivo and ex vivo gene therapy. Here, we highlight several classes of polymers employed in gene delivery and summarize the recent work on understanding the contributions of chemical and architectural design parameters. We touch upon characterization methods used to visualize and understand events transpiring at the interfaces between polymer, nucleic acids, and the physiological environment. We conclude that interdisciplinary approaches and methodologies motivated by fundamental questions are key to designing high-performing polymeric vehicles for gene therapy.
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Affiliation(s)
- Ramya Kumar
- Department of Chemistry, University of Minnesota, Minneapolis, Minnesota 55455, United States
| | | | - Matthew R Bockman
- Department of Chemistry, University of Minnesota, Minneapolis, Minnesota 55455, United States
| | - Craig Van Bruggen
- Department of Chemistry, University of Minnesota, Minneapolis, Minnesota 55455, United States
| | - Christian J Grimme
- Department of Chemical Engineering and Materials Science, University of Minnesota, Minneapolis, Minnesota 55455, United States
| | - Rishad J Dalal
- Department of Chemistry, University of Minnesota, Minneapolis, Minnesota 55455, United States
| | - Mckenna G Hanson
- Department of Chemistry, University of Minnesota, Minneapolis, Minnesota 55455, United States
| | - Joseph K Hexum
- Department of Chemistry, University of Minnesota, Minneapolis, Minnesota 55455, United States
| | - Theresa M Reineke
- Department of Chemistry, University of Minnesota, Minneapolis, Minnesota 55455, United States
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18
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Lin J, Feng BS, Huang N, Ma N, Liu ZQ, Shu Q, Zhong N, Liu ZG, Yang PC. Enolase-specific cross antibodies induce neutrophilic inflammation in the intestine. J Leukoc Biol 2021; 109:633-644. [PMID: 32810329 DOI: 10.1002/jlb.3a0620-128r] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2020] [Revised: 06/05/2020] [Accepted: 04/14/2020] [Indexed: 11/09/2022] Open
Abstract
The pathogenesis of ulcerative colitis (UC) is to be further investigated. House dust mites (HDM) are highly associated with the pathogenesis of immune inflammation in the body. This study aims to investigate the role of enolase (one of the HDM-derived proteins)-specific cross Abs in the induction of UC-like inflammation. The enolase specific IgG (EsIgG) was identified in UC patients by mass spectrometry. Mice were treated with EsIgG to induce inflammation in the colon mucosa. EsIgG was detected in the serum and the colon tissues of UC patients, which was positively correlated with the polymorphonuclear neutrophil (PMN) counts in the blood and colon tissues of UC patients. EsIgG formed immune complexes with the constitutive enolase in the UC colon epithelium that activated complement, induced epithelial cell apoptosis, compromised epithelial barrier functions, and resulted in UC-like inflammation in the mouse colon. In summary, UC patients have high serum levels of Abs against HDM-derived enolase and intestinal epithelial cell-derived enolase. These Abs attack the colonic epithelium to induce UC-like inflammation.
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Affiliation(s)
- Jianli Lin
- Research Center of Allergy & Immunology, Shenzhen University School of Medicine, Shenzhen, China
| | - Bai-Sui Feng
- Department of Gastroenterology, Second Affiliated Hospital, Zhengzhou University, Zhengzhou, China
| | - Nana Huang
- Research Center of Allergy & Immunology, Shenzhen University School of Medicine, Shenzhen, China
| | - Na Ma
- Department of Gastroenterology, Second Affiliated Hospital, Zhengzhou University, Zhengzhou, China
| | - Zhi-Qiang Liu
- Longgang ENT Hospital & Shenzhen ENT Institute, Shenzhen, China
| | - Qing Shu
- Department of Gastroenterology, First Affiliated Hospital, Shenzhen University, Shenzhen, China
| | - Nanshan Zhong
- State Key Laboratory of Respiratory Disease, National Clinical Center for Respiratory Diseases, Guangzhou Institute of Respiratory Diseases, First Affiliated Hospital, Guangzhou Medical University, Guangzhou, China
| | - Zhi-Gang Liu
- Research Center of Allergy & Immunology, Shenzhen University School of Medicine, Shenzhen, China
| | - Ping-Chang Yang
- Research Center of Allergy & Immunology, Shenzhen University School of Medicine, Shenzhen, China
- Guangdong Provincial Key Laboratory of Regional Immunity and Diseases, Shenzhen, China
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19
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Uma priya K, Venkataramaiah C, Sreedhar NY, Raju CN. Design, synthesis, characterization and in vitro, in vivo and in silico antimicrobial and antiinflammatory activities of a new series of sulphonamide and carbamate derivatives of a nebivolol intermediate. RSC Adv 2021; 11:3897-3916. [PMID: 35424332 PMCID: PMC8694313 DOI: 10.1039/d0ra08905b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2020] [Accepted: 12/27/2020] [Indexed: 11/21/2022] Open
Abstract
A series of new sulphonamide and carbamate derivatives of Nebivolol drug intermediate (5) were designed and synthesized by reacting various biopotent sulphonylchlorides and chloroformates. The synthesized compounds are structurally characterized by spectral (IR, 1H & 13C NMR and mass) and screened for their in vitro antimicrobial activity against four bacterial and three fungal strains, in vitro and in vivo antiinflammatory activity against LPS-induced inflammation in RAW 264.7, in vitro COX-1 and COX-2 inhibition potentiality, antagonistic profiles of carrageenan induced paw edema and cotton pellet induced granuloma in rat. Further, the compounds were screened for their antimicrobial and antiinflammatory activity against DNA gyrase A, COX-1 and COX-2 by using molecular docking approach. The bioactivity and toxicity risks were analysed through Molecular Operating Environment. The results revealed that the compounds 8b, 8c, 8d, 8e, 8f, 8g and 9a exhibited the most promising antimicrobial activity against all the bacterial and fungal strains tested when compared with the standard drugs streptomycin and fluconazole. In view of in antiinflammatory activity, the compounds, 8b, 8c, 8d, 8e, 8f, 8g and 9a have shown potent antiinflammatory activity by inhibiting the LPS-induced inflammation in RAW 264.7 cell line, concentration dependent inhibition of COX-1 and COX-2, dose response dependent antagonism of carrageenan induced paw edema and granuloma tissue in rat. Molecular docking, ADMET and QSAR studies predicted that the recorded in silico profiles are in strong correlation with in vitro and in vivo antimicrobial and antiinflammatory results. In addition, the elevated toxicology risks of the title compounds are identified with in the potential limits of drug candidates. Hence, it is suggested that the synthesized derivatives will stand as the promising antimicrobial and anti-inflammatory drug candidates in future. A series of new sulphonamide and carbamate derivatives of Nebivolol drug intermediate (5) were designed and synthesized by reacting various biopotent sulphonylchlorides and chloroformates.![]()
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Affiliation(s)
- K. Uma priya
- Department of Chemistry
- Sri Venkateswara University
- Tirupati
- India
| | - Ch. Venkataramaiah
- Department of Zoology
- Sri Venkateswara University
- Tirupati
- India
- Department of Zoology
| | - N. Y. Sreedhar
- Department of Chemistry
- Sri Venkateswara University
- Tirupati
- India
| | - C. Naga Raju
- Department of Chemistry
- Sri Venkateswara University
- Tirupati
- India
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20
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Ma Y, Jiang L, Wang L, Li Y, Liu Y, Lu W, Shi R, Zhang L, Fu Z, Qu M, Liu Y, Wang Y, Zhang Z, Yang GY. Endothelial progenitor cell transplantation alleviated ischemic brain injury via inhibiting C3/C3aR pathway in mice. J Cereb Blood Flow Metab 2020; 40:2374-2386. [PMID: 31865842 PMCID: PMC7820683 DOI: 10.1177/0271678x19892777] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Endothelial progenitor cell transplantation is a potential therapeutic approach in brain ischemia. However, whether the therapeutic effect of endothelial progenitor cells is via affecting complement activation is unknown. We established a mouse focal ischemia model (n = 111) and transplanted endothelial progenitor cells into the peri-infarct region immediately after brain ischemia. Neurological outcomes and brain infarct/atrophy volume were examined after ischemia. Expression of C3, C3aR and pro-inflammatory factors were further examined to explore the role of endothelial progenitor cells in ischemic brain. We found that endothelial progenitor cells improved neurological outcomes and reduced brain infarct/atrophy volume after 1 to 14 days of ischemia compared to the control (p < 0.05). C3 and C3aR expression in the brain was up-regulated at 1 day up to 14 days (p < 0.05). Endothelial progenitor cells reduced astrocyte-derived C3 (p < 0.05) and C3aR expression (p < 0.05) after ischemia. Endothelial progenitor cells also reduced inflammatory response after ischemia (p < 0.05). Endothelial progenitor cell transplantation reduced astrocyte-derived C3 expression in the brain after ischemic stroke, together with decreased C3aR and inflammatory response contributing to neurological function recovery. Our results indicate that modulating complement C3/C3aR pathway is a novel therapeutic target for the ischemic stroke.
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Affiliation(s)
- Yuanyuan Ma
- Department of Neurology, Ruijin Hospital, School of Medicine and School of Biomedical Engineering, Shanghai Jiao Tong University, Shanghai, China.,Department of Neurology, Zhongshan Hospital, Fudan University, Shanghai, China
| | - Lu Jiang
- Department of Neurology, Ruijin Hospital, School of Medicine and School of Biomedical Engineering, Shanghai Jiao Tong University, Shanghai, China
| | - Liping Wang
- Department of Neurology, Ruijin Hospital, School of Medicine and School of Biomedical Engineering, Shanghai Jiao Tong University, Shanghai, China
| | - Yongfang Li
- Department of Neurology, Ruijin Hospital, School of Medicine and School of Biomedical Engineering, Shanghai Jiao Tong University, Shanghai, China
| | - Yanqun Liu
- Department of Neurology, Changhai Hospital, Second Military Medical University, Shanghai, China
| | - Wenjing Lu
- Department of Neurology, Ruijin Hospital, School of Medicine and School of Biomedical Engineering, Shanghai Jiao Tong University, Shanghai, China
| | - Rubing Shi
- Department of Neurology, Ruijin Hospital, School of Medicine and School of Biomedical Engineering, Shanghai Jiao Tong University, Shanghai, China
| | - Linyuan Zhang
- Department of Neurology, Shanghai General Hospital, Shanghai Jiao Tong University, Shanghai, China
| | - Zongjie Fu
- Department of Neurology, Ruijin Hospital, School of Medicine and School of Biomedical Engineering, Shanghai Jiao Tong University, Shanghai, China
| | - Meijie Qu
- Department of Neurology, Ruijin Hospital, School of Medicine and School of Biomedical Engineering, Shanghai Jiao Tong University, Shanghai, China
| | - Yingling Liu
- Department of Neurosurgery, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai, China
| | - Yongting Wang
- Department of Neurology, Ruijin Hospital, School of Medicine and School of Biomedical Engineering, Shanghai Jiao Tong University, Shanghai, China
| | - Zhijun Zhang
- Department of Neurology, Ruijin Hospital, School of Medicine and School of Biomedical Engineering, Shanghai Jiao Tong University, Shanghai, China
| | - Guo-Yuan Yang
- Department of Neurology, Ruijin Hospital, School of Medicine and School of Biomedical Engineering, Shanghai Jiao Tong University, Shanghai, China
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21
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Chéneau C, Kremer EJ. Adenovirus-Extracellular Protein Interactions and Their Impact on Innate Immune Responses by Human Mononuclear Phagocytes. Viruses 2020; 12:v12121351. [PMID: 33255892 PMCID: PMC7760109 DOI: 10.3390/v12121351] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2020] [Revised: 11/23/2020] [Accepted: 11/24/2020] [Indexed: 12/11/2022] Open
Abstract
The aim of this review is to highlight how, in a syngeneic system, human mononuclear phagocytes respond to environments containing human adenovirus (HAdV) and soluble extracellular proteins that influence their innate immune response. Soluble extracellular proteins, including immunoglobulins, blood clotting factors, proteins of the complement system, and/or antimicrobial peptides (AMPs) can exert direct effects by binding to a virus capsid that modifies interactions with pattern recognition receptors and downstream signaling. In addition, the presence, generation, or secretion of extracellular proteins can indirectly influence the response to HAdVs via the activation and recruitment of cells at the site of infection.
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22
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Polymer Nanomedicines with Ph-Sensitive Release of Dexamethasone for the Localized Treatment of Inflammation. Pharmaceutics 2020; 12:pharmaceutics12080700. [PMID: 32722403 PMCID: PMC7465548 DOI: 10.3390/pharmaceutics12080700] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2020] [Revised: 07/14/2020] [Accepted: 07/16/2020] [Indexed: 12/12/2022] Open
Abstract
Polymer-drug conjugates have several advantages in controlled drug delivery to inflammation as they can accumulate and release the drug in inflamed tissues or cells, which could circumvent the shortcomings of current therapy. To improve the therapeutic potential of polymer-drug conjugates in joint inflammation, we synthesized polymer conjugates based on N-(2-hydroxypropyl) methacrylamide) copolymers labeled with a near-infrared fluorescent dye and covalently linked to the anti-inflammatory drug dexamethasone (DEX). The drug was bound to the polymer via a spacer enabling pH-sensitive drug release in conditions mimicking the environment inside inflammation-related cells. An in vivo murine model of adjuvant-induced arthritis was used to confirm the accumulation of polymer conjugates in arthritic joints, which occurred rapidly after conjugate application and remained until the end of the experiment. Several tested dosage schemes of polymer DEX-OPB conjugate showed superior anti-inflammatory efficacy. The highest therapeutic effect was obtained by repeated i.p. application of polymer conjugate (3 × 1 mg/kg of DEX eq.), which led to a reduction in the severity of inflammation in the ankle by more than 90%, compared to 40% in mice treated with free DEX.
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Santonocito D, Sarpietro MG, Carbone C, Panico A, Campisi A, Siciliano EA, Sposito G, Castelli F, Puglia C. Curcumin Containing PEGylated Solid Lipid Nanoparticles for Systemic Administration: A Preliminary Study. Molecules 2020; 25:molecules25132991. [PMID: 32629951 PMCID: PMC7411787 DOI: 10.3390/molecules25132991] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2020] [Revised: 06/24/2020] [Accepted: 06/28/2020] [Indexed: 01/06/2023] Open
Abstract
Curcumin (CUR) has a wide range of pharmacological properties, including anti-inflammatory and antioxidant activities, and it can be considered a good candidate for the potential treatment of central nervous system (CNS) pathologies, although its use in clinical practice is compromised due to its high lipophilicity. Solid lipid nanoparticles (SLNs) are well-known nanocarriers representing a consolidated approach for the delivery of lipophilic compounds, but their systemic use is limited due their short half-life. The formulation of stealth SLNs (pSLNs) could be a valid strategy to overcome this limit. Curcumin-loaded-pSLNs were prepared by the solvent evaporation method. Formulation was characterized for their mean size, zeta potential, size distribution, and morphology. Drug antioxidant activity was evaluated by Oxygen Radical Absorbance Capacity (ORAC) assay. Finally, the obtained formulations were analyzed in terms of long-term stability. Curcumin-loaded-pSLNs showed good technological parameters with a mean particle size below 200 nm, as confirmed by TEM images, and a zeta potential value around -30 mV, predicting good long-term stability. Differential Scanning Calorimetry (DSC) analysis confirmed that PEG micelles interacted with the SLN surface; this suggests the location of the PEG on the pSLN surface. Therefore, these preliminary studies suggest that the produced formulation could be regarded as a promising carrier for the systemic administration.
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Weiss ACG, Herold HM, Lentz S, Faria M, Besford QA, Ang CS, Caruso F, Scheibel T. Surface Modification of Spider Silk Particles to Direct Biomolecular Corona Formation. ACS APPLIED MATERIALS & INTERFACES 2020; 12:24635-24643. [PMID: 32369330 DOI: 10.1021/acsami.0c06344] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
In recent years, spider silk-based materials have attracted attention because of their biocompatibility, processability, and biodegradability. For their potential use in biomaterial applications, i.e., as drug delivery systems and implant coatings for tissue regeneration, it is vital to understand the interactions between the silk biomaterial surface and the biological environment. Like most polymeric carrier systems, spider silk material surfaces can adsorb proteins when in contact with blood, resulting in the formation of a biomolecular corona. Here, we assessed the effect of surface net charge of materials made of recombinant spider silk on the biomolecular corona composition. In-depth proteomic analysis of the biomolecular corona revealed that positively charged spider silk materials surfaces interacted predominantly with fibrinogen-based proteins. This fibrinogen enrichment correlated with blood clotting observed for both positively charged spider silk films and particles. In contrast, negative surface charges prevented blood clotting. Genetic engineering allows the fine-tuning of surface properties of the spider silk particles providing a whole set of recombinant spider silk proteins with different charges or peptide tags to be used for, for example, drug delivery or cell docking, and several of these were analyzed concerning the composition of their biomolecular corona. Taken together this study demonstrates how the surface net charge of recombinant spider silk surfaces affects the composition of the biomolecular corona, which in turn affects macroscopic effects such as fibrin formation and blood clotting.
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Affiliation(s)
- Alessia C G Weiss
- ARC Centre of Excellence in Convergent Bio-Nano Science and Technology and the Department of Chemical Engineering, The University of Melbourne, Victoria 3010, Australia
| | - Heike M Herold
- Lehrstuhl für Biomaterialien, Universität Bayreuth, Prof. Rüdiger-Bormann-Strasse 1, Bayreuth 95447, Germany
| | - Sarah Lentz
- Lehrstuhl für Biomaterialien, Universität Bayreuth, Prof. Rüdiger-Bormann-Strasse 1, Bayreuth 95447, Germany
| | - Matthew Faria
- ARC Centre of Excellence in Convergent Bio-Nano Science and Technology, The University of Melbourne, Parkville, Victoria 3052, Australia
- Systems Biology Laboratory, School of Mathematics and Statistics, and the Department of Biomedical Engineering, The University of Melbourne, Parkville, Victoria 3010, Australia
| | - Quinn A Besford
- Leibniz-Institute für Polymerforschung, Hohe Straβe 6, Dresden 01069 , Germany
| | - Ching-Seng Ang
- Bio21 Molecular Science and Biotechnology Institute, The University of Melbourne, Parkville, Victoria 3010, Australia
| | - Frank Caruso
- ARC Centre of Excellence in Convergent Bio-Nano Science and Technology and the Department of Chemical Engineering, The University of Melbourne, Victoria 3010, Australia
| | - Thomas Scheibel
- Lehrstuhl für Biomaterialien, Universität Bayreuth, Prof. Rüdiger-Bormann-Strasse 1, Bayreuth 95447, Germany
- Bayreuther Zentrum für Kolloide und Grenzflächen (BZKG), Universität Bayreuth, Bayreuth 95440, Germany
- Bayreuther Zentrum für Molekulare Biowissenschaften (BZMB), Universität Bayreuth, Bayreuth 95440, Germany
- Bayreuther Materialzentrum (BayMAT), Universität Bayreuth, Bayreuth 95440, Germany
- Bayerisches Polymerinstitut (BPI), Universität Bayreuth, Bayreuth 95440, Germany
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Fam SY, Chee CF, Yong CY, Ho KL, Mariatulqabtiah AR, Tan WS. Stealth Coating of Nanoparticles in Drug-Delivery Systems. NANOMATERIALS (BASEL, SWITZERLAND) 2020; 10:E787. [PMID: 32325941 PMCID: PMC7221919 DOI: 10.3390/nano10040787] [Citation(s) in RCA: 182] [Impact Index Per Article: 45.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/19/2020] [Revised: 03/06/2020] [Accepted: 03/07/2020] [Indexed: 01/01/2023]
Abstract
Nanoparticles (NPs) have emerged as a powerful drug-delivery tool for cancer therapies to enhance the specificity of drug actions, while reducing the systemic side effects. Nonetheless, NPs interact massively with the surrounding physiological environments including plasma proteins upon administration into the bloodstream. Consequently, they are rapidly cleared from the blood circulation by the mononuclear phagocyte system (MPS) or complement system, resulting in a premature elimination that will cause the drug release at off-target sites. By grafting a stealth coating layer onto the surface of NPs, the blood circulation half-life of nanomaterials can be improved by escaping the recognition and clearance of the immune system. This review focuses on the basic concept underlying the stealth behavior of NPs by polymer coating, whereby the fundamental surface coating characteristics such as molecular weight, surface chain density as well as conformations of polymer chains are of utmost importance for efficient protection of NPs. In addition, the most commonly used stealth polymers such as poly(ethylene glycol) (PEG), poly(2-oxazoline) (POx), and poly(zwitterions) in developing long-circulating NPs for drug delivery are also thoroughly discussed. The biomimetic strategies, including the cell-membrane camouflaging technique and CD47 functionalization for the development of stealth nano-delivery systems, are highlighted in this review as well.
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Affiliation(s)
- See Yee Fam
- Department of Microbiology, Faculty of Biotechnology and Biomolecular Sciences, Universiti Putra Malaysia, Serdang 43400, Malaysia; (S.Y.F.); (C.Y.Y.)
| | - Chin Fei Chee
- Nanotechnology and Catalysis Research Centre, University of Malaya, Kuala Lumpur 50603, Malaysia;
| | - Chean Yeah Yong
- Department of Microbiology, Faculty of Biotechnology and Biomolecular Sciences, Universiti Putra Malaysia, Serdang 43400, Malaysia; (S.Y.F.); (C.Y.Y.)
| | - Kok Lian Ho
- Department of Pathology, Faculty of Medicine and Health Sciences, Universiti Putra Malaysia, Serdang 43400, Malaysia;
| | - Abdul Razak Mariatulqabtiah
- Department of Cell and Molecular Biology, Faculty of Biotechnology and Biomolecular Sciences, Universiti Putra Malaysia, Serdang 43400, Malaysia;
- Laboratory of Vaccines and Immunotherapeutics, Institute of Bioscience, Universiti Putra Malaysia, Serdang 43400, Malaysia
| | - Wen Siang Tan
- Department of Microbiology, Faculty of Biotechnology and Biomolecular Sciences, Universiti Putra Malaysia, Serdang 43400, Malaysia; (S.Y.F.); (C.Y.Y.)
- Laboratory of Vaccines and Immunotherapeutics, Institute of Bioscience, Universiti Putra Malaysia, Serdang 43400, Malaysia
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de Azevedo MDBM, Melo VHS, Soares CRJ, Gamarra LF, Barros CHN, Tasic L. Poly(3-hydroxi-butyrate-co-3-hydroxy-valerate) (PHB-HV) microparticles loaded with holmium acetylacetonate as potential contrast agents for magnetic resonance images. Int J Nanomedicine 2019; 14:6869-6889. [PMID: 31507318 PMCID: PMC6718972 DOI: 10.2147/ijn.s191274] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2018] [Accepted: 03/11/2019] [Indexed: 11/30/2022] Open
Abstract
INTRODUCTION Biodegradable polymers that contain radioactive isotopes such as Holmium 166 have potential applications as beta particle emitters in tumor tissues. Also, Ho(III) is paramagnetic, which makes it suitable as a contrast agent for magnetic resonance (MR) images. METHODS Holmium acetylacetonate (Ho(acac)3) loaded poly(3-hydroxy-butyrate-co-3-hydroxy-valerate) microspheres, with 5% or 8% of 3-hydroxy-valerate (HV), were prepared by emulsification/evaporation process within 20-53 μm size. Microspheres characterization was done using scanning electron microscopy, energy-dispersive X-ray, and infrared spectroscopies. The release of holmium(III) in sodium phosphate buffer (pH 7.4) was followed for 9 days with inductively coupled plasma. Finally, T2 and T2* magnetic resonance images (MRI) were acquired and compared with the MRI of the inclusion complex of holmium acetylacetonate in some β-cyclodextrins. RESULTS Holmium acetylacetonate loading, evaluated by thermogravimetry, was up to 20 times higher for copolymer with 5% of HV. It was shown that microspheres loaded with Ho(acac)3 exhibited an accumulation of Ho(III) on their surfaces but were stable over time, as no expressive release of holmium(III) was detected in 9-day exposition to sodium phosphate buffer. Holmium acetylacetonate in both microspheres or inclusion complexes was very efficient in obtaining T2 and T2* weighted images in magnetic resonance, thus, might be used as contrast agents. CONCLUSION This is the first description of the use of inclusion complexes of holmium acetylacetonate in biodegradable polymers as contrast agents. New investigations are underway to evaluate the resistance of PHB-HV polymer microparticles to nuclear activation to assess their potential for use as radiopharmaceuticals for the treatment of liver cancer.
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Affiliation(s)
| | - Vitor HS Melo
- Centro de Biotecnologia, IPEN/CNEN-SP, São Paulo, Brazil
| | | | | | - Caio HN Barros
- School of Chemical and Bioprocess Engineering, University College Dublin, Dublin, Ireland
- Instituto de Química, UNICAMP, SP, Campinas, Brazil
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Expression Signatures of Cisplatin- and Trametinib-Treated Early-Stage Medaka Melanomas. G3-GENES GENOMES GENETICS 2019; 9:2267-2276. [PMID: 31101653 PMCID: PMC6643878 DOI: 10.1534/g3.119.400051] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Small aquarium fish models provide useful systems not only for a better understanding of the molecular basis of many human diseases, but also for first-line screening to identify new drug candidates. For testing new chemical substances, current strategies mostly rely on easy to perform and efficient embryonic screens. Cancer, however, is a disease that develops mainly during juvenile and adult stage. Long-term treatment and the challenge to monitor changes in tumor phenotype make testing of large chemical libraries in juvenile and adult animals cost prohibitive. We hypothesized that changes in the gene expression profile should occur early during anti-tumor treatment, and the disease-associated transcriptional change should provide a reliable readout that can be utilized to evaluate drug-induced effects. For the current study, we used a previously established medaka melanoma model. As proof of principle, we showed that exposure of melanoma developing fish to the drugs cisplatin or trametinib, known cancer therapies, for a period of seven days is sufficient to detect treatment-induced changes in gene expression. By examining whole body transcriptome responses we provide a novel route toward gene panels that recapitulate anti-tumor outcomes thus allowing a screening of thousands of drugs using a whole-body vertebrate model. Our results suggest that using disease-associated transcriptional change to screen therapeutic molecules in small fish model is viable and may be applied to pre-clinical research and development stages in new drug discovery.
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SPIONs Prepared in Air through Improved Synthesis Methodology: The Influence of γ-Fe 2O 3/Fe 3O 4 Ratio and Coating Composition on Magnetic Properties. NANOMATERIALS 2019; 9:nano9070943. [PMID: 31261832 PMCID: PMC6669523 DOI: 10.3390/nano9070943] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/10/2019] [Revised: 06/18/2019] [Accepted: 06/24/2019] [Indexed: 01/19/2023]
Abstract
Superparamagnetic iron oxide nanoparticles (SPIONs) have shown great potential in biomedicine due to their high intrinsic magnetization behaviour. These are small particles of magnetite or maghemite, and when coated, their surface oxidation is prevented, their aggregation tendency is reduced, their dispersity is improved, and the stability and blood circulation time are increased, which are mandatory requirements in biomedical applications. In this work, SPIONs were synthesized in air through a reduction-precipitation method and coated with four different polymers (Polyethylene glycol(PEG) 1000/6000 and dextran T10/T70). All the synthesized samples were structurally and magnetically characterized by transmission electron microscopy, Fourier transform infra-red spectroscopy, X-ray powder diffraction, Mössbauer spectroscopy, and Superconducting Quantum Interference Device (SQUID) magnetometry. SPIONs centrifuged and dried in vacuum with an average diameter of at least 7.5 nm and a composition ≤60% of maghemite and ≥40% of magnetite showed the best magnetization results, namely a saturation magnetization of ~64 emu/g at 300 K, similar to the best reported values for SPIONs prepared in controlled atmosphere. As far as SPIONs’ coatings are concerned, during their preparation procedure, surface polymers must be introduced after the SPIONs’ precipitation. Furthermore, polymers with shorter chains do not affect the SPIONs’ magnetization performance, although longer chain polymers significantly decrease the coated particle magnetization values, which is undesirable.
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Fu R, Chen D, Tian G, Zheng P, Mao X, Yu J, He J, Huang Z, Luo Y, Yu B. Effect of dietary supplementation of Bacillus coagulans or yeast hydrolysates on growth performance, antioxidant activity, cytokines and intestinal microflora of growing-finishing pigs. ACTA ACUST UNITED AC 2019; 5:366-372. [PMID: 31890913 PMCID: PMC6920390 DOI: 10.1016/j.aninu.2019.06.003] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2019] [Revised: 05/04/2019] [Accepted: 06/23/2019] [Indexed: 11/26/2022]
Abstract
This study was to investigate the effects of dietary supplementation of Bacillus coagulans (BC) and yeast hydrolysates (YH) on growth performance, antioxidant activity, cytokines and intestinal microflora of growing-finishing pigs. Thirty-six barrows (initial BW = 26.87 ± 2.65 kg) were assigned randomly to 3 treatments with 4 replicates, 3 pigs per replicate. Pigs in the control group (CON) were fed a basal diet, and the diets for the other 2 groups were the basal diet plus BC at 200 mg/kg and the basal diet plus YH at 3,000 mg/kg. The trial lasted for 104 d. Compared with CON, YH treatment significantly increased average daily gain (ADG) and average daily feed intake (ADFI) during the finishing phase (P < 0.05), and significantly enhanced ADG during the overall period (P < 0.05). Dietary inclusion of BC tended to increase ADFI during the finishing period (P = 0.08). Compared with CON, BC treatment improved lysozyme (LZM), complement 3 (C3), complement 4 (C4), interlenkin-10 (IL-10) and total antioxidant capacity (T-AOC) level in serum (P < 0.05). Dietary inclusion of YH enhanced the serum IL-10 level (P < 0.05) and tended to increase T-AOC level (P = 0.06). Dietary inclusion of YH elevated (P < 0.05) the number of Lactobacillus and Bacillus in cecal contents of pigs, promoted the populations of Bifidobacterium and Bacillus in colonic contents. Moreover, the BC diet increased (P < 0.05) the count of Bifidobacterium in colonic contents. These results indicated that dietary BC supplementation is beneficial to improve the immunity. Dietary YH supplementation promoted the growth performance and the populations of beneficial bacteria in the hindgut of the growing-finishing pigs.
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Affiliation(s)
- Runqi Fu
- Key Laboratory for Animal Disease-Resistance Nutrition of Ministry of Education, Institute of Animal Nutrition, Sichuan Agricultural University, Chengdu, 611130, China
| | - Daiwen Chen
- Key Laboratory for Animal Disease-Resistance Nutrition of Ministry of Education, Institute of Animal Nutrition, Sichuan Agricultural University, Chengdu, 611130, China
| | - Gang Tian
- Key Laboratory for Animal Disease-Resistance Nutrition of Ministry of Education, Institute of Animal Nutrition, Sichuan Agricultural University, Chengdu, 611130, China
| | - Ping Zheng
- Key Laboratory for Animal Disease-Resistance Nutrition of Ministry of Education, Institute of Animal Nutrition, Sichuan Agricultural University, Chengdu, 611130, China
| | - Xiangbing Mao
- Key Laboratory for Animal Disease-Resistance Nutrition of Ministry of Education, Institute of Animal Nutrition, Sichuan Agricultural University, Chengdu, 611130, China
| | - Jie Yu
- Key Laboratory for Animal Disease-Resistance Nutrition of Ministry of Education, Institute of Animal Nutrition, Sichuan Agricultural University, Chengdu, 611130, China
| | - Jun He
- Key Laboratory for Animal Disease-Resistance Nutrition of Ministry of Education, Institute of Animal Nutrition, Sichuan Agricultural University, Chengdu, 611130, China
| | - Zhiqing Huang
- Key Laboratory for Animal Disease-Resistance Nutrition of Ministry of Education, Institute of Animal Nutrition, Sichuan Agricultural University, Chengdu, 611130, China
| | - Yuheng Luo
- Key Laboratory for Animal Disease-Resistance Nutrition of Ministry of Education, Institute of Animal Nutrition, Sichuan Agricultural University, Chengdu, 611130, China
| | - Bing Yu
- Key Laboratory for Animal Disease-Resistance Nutrition of Ministry of Education, Institute of Animal Nutrition, Sichuan Agricultural University, Chengdu, 611130, China
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Porphyrin-xylan-coated silica nanoparticles for anticancer photodynamic therapy. Carbohydr Polym 2019; 213:168-175. [DOI: 10.1016/j.carbpol.2019.02.070] [Citation(s) in RCA: 31] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2018] [Revised: 02/14/2019] [Accepted: 02/19/2019] [Indexed: 12/11/2022]
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Van den Broeck L, Piluso S, Soultan AH, De Volder M, Patterson J. Cytocompatible carbon nanotube reinforced polyethylene glycol composite hydrogels for tissue engineering. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2019; 98:1133-1144. [DOI: 10.1016/j.msec.2019.01.020] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/17/2018] [Revised: 12/01/2018] [Accepted: 01/07/2019] [Indexed: 12/11/2022]
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Chen J, Jin L, Yan M, Yang Z, Wang H, Geng S, Gong Z, Liu G. Serum Exosomes from Newborn Piglets Restrict Porcine Epidemic Diarrhea Virus Infection. J Proteome Res 2019; 18:1939-1947. [PMID: 30983354 DOI: 10.1021/acs.jproteome.9b00195] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
Exosomes are vehicles in the body fluid that participate in many biological processes, especially immune responses. In this study, we employed comparative proteome analysis to investigate the roles of serum exosomes during viral infection in neonates using porcine epidemic diarrhea virus (PEDV), a devastating enteric virus in newborn piglets, as a model virus. Serum exosomes were first isolated from newborn piglets infected with PEDV or mock-infected newborn piglets, followed by label-free LC-MS/MS-based comparative quantitative proteomic analysis. Among the 441 detected proteins, 10 complement proteins were found in the serum exosomes, and significantly decreased expression levels of the C3, C6, and CFB complements were measured in PEDV-infected serum exosomes compared to those in mock-infected serum exosomes. After confirmation by Western blot, we then investigated the function of these exosomes in PEDV infection and discovered that exosomes from mock-infected newborn piglets restricted PEDV infection. However, this inhibition disappeared after the exosomes were heat-inactivated, suggesting that complements are key antiviral molecules. Our findings improve the understanding of antiviral responses mediated by exosomes in neonatal piglets and facilitate the discovery of novel antiviral drugs.
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Affiliation(s)
- Jianing Chen
- State Key Laboratory of Veterinary Etiological Biology, Lanzhou Veterinary Research Institute , Chinese Academy of Agricultural Sciences , Lanzhou , Gansu 730046 , China
| | - Li Jin
- State Key Laboratory of Veterinary Etiological Biology, Lanzhou Veterinary Research Institute , Chinese Academy of Agricultural Sciences , Lanzhou , Gansu 730046 , China
| | - Miaomiao Yan
- State Key Laboratory of Veterinary Etiological Biology, Lanzhou Veterinary Research Institute , Chinese Academy of Agricultural Sciences , Lanzhou , Gansu 730046 , China
| | - Ze Yang
- State Key Laboratory of Veterinary Etiological Biology, Lanzhou Veterinary Research Institute , Chinese Academy of Agricultural Sciences , Lanzhou , Gansu 730046 , China.,The First Affiliated Hospital of Lanzhou University , Lanzhou , Gansu 730000 , China
| | - Haiwen Wang
- State Key Laboratory of Veterinary Etiological Biology, Lanzhou Veterinary Research Institute , Chinese Academy of Agricultural Sciences , Lanzhou , Gansu 730046 , China
| | - Shuxian Geng
- State Key Laboratory of Veterinary Etiological Biology, Lanzhou Veterinary Research Institute , Chinese Academy of Agricultural Sciences , Lanzhou , Gansu 730046 , China.,School of Veterinary Medicine , Gansu Agricultural University , Lanzhou , Gansu 730070 , China
| | - Zhenli Gong
- State Key Laboratory of Veterinary Etiological Biology, Lanzhou Veterinary Research Institute , Chinese Academy of Agricultural Sciences , Lanzhou , Gansu 730046 , China
| | - Guangliang Liu
- State Key Laboratory of Veterinary Etiological Biology, Lanzhou Veterinary Research Institute , Chinese Academy of Agricultural Sciences , Lanzhou , Gansu 730046 , China
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Geiger SS, Curtis AM, O'Neill LAJ, Siegel RM. Daily variation in macrophage phagocytosis is clock-independent and dispensable for cytokine production. Immunology 2019; 157:122-136. [PMID: 30773630 DOI: 10.1111/imm.13053] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2018] [Revised: 02/12/2019] [Accepted: 02/13/2019] [Indexed: 12/19/2022] Open
Abstract
Innate immune responses vary in a circadian manner, and more recent investigations aim to understand the underlying molecular mechanisms. Cytokine production varies significantly over the course of a day depending on the time of stimulation by pathogens or Toll-like receptor ligands, and multiple signaling pathways linked to the cell-autonomous circadian clock modulate innate immunity. Recognition of foreign material, especially by innate immune cells, engages a myriad of receptors, which trigger inflammatory responses, as well as endocytosis and degradation and/or processing for antigen presentation. Because of the close connection between particle engulfment and inflammation, it has been proposed that phagocytic uptake may drive cytokine production in phagocytes. Here we show that bacterial particle ingestion by mouse peritoneal macrophages displays temporal variation, but is independent of the cell-intrinsic circadian clock in an ex vivo setting. Although cytokine production is dependent on phagocytosis, uptake capacity across 12 hr does not translate into 24-hr rhythms in cytokine production. In vivo, time-of-day variations in phagocytic capacity are not found, whereas a time of day and clock-dependent cytokine response is maintained. These data show that efficiency of bacterial phagocytosis and the 24-hr rhythmicity of cytokine production by macrophages are independent of one another and should be studied separately.
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Affiliation(s)
- Sarah S Geiger
- Immunoregulation Section, Autoimmunity Branch, NIAMS, National Institutes of Health, Bethesda, MD, USA.,Trinity Biomedical Science Institute, Trinity College Dublin, Dublin, Ireland
| | - Annie M Curtis
- Immune Clock Laboratory, Tissue and Engineering Regenerative Group and Molecular and Cellular Therapeutics Department, Royal College of Surgeons in Ireland , Dublin, Ireland
| | - Luke A J O'Neill
- Trinity Biomedical Science Institute, Trinity College Dublin, Dublin, Ireland
| | - Richard M Siegel
- Immunoregulation Section, Autoimmunity Branch, NIAMS, National Institutes of Health, Bethesda, MD, USA
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Wang Y, Zhang Y, Chi X, Ma X, Xu W, Shi F, Hu S. Anti-inflammatory mechanism of ginsenoside Rg1: Proteomic analysis of milk from goats with mastitis induced with lipopolysaccharide. Int Immunopharmacol 2019; 71:382-391. [PMID: 30952102 DOI: 10.1016/j.intimp.2019.03.048] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2019] [Revised: 03/23/2019] [Accepted: 03/25/2019] [Indexed: 12/20/2022]
Abstract
Previous investigation showed that intravenous injection of ginsenoside Rg1 had a therapeutic effect on Escherichia coli lipopolysaccharide-induced mastitis in lactating goats and it protected animals from lipopolysaccharide challenge via toll-like receptor 4 signaling pathway. The present study was to use proteomic approach to explore the anti-inflammatory mechanisms of Rg1. Nine dairy goats were randomly divided into three groups with 3 animals in each: groups 1 and 2 received intra-mammary infusion of lipopolysaccharide and then intravenously injected with saline or Rg1 solution; animals in group 3 were first intramammarily and then intravenously administered saline solution, and served as a control group. Milk whey at 6 h post lipopolysaccharide challenge was prepared for tandem mass tags based quantitative proteomic analysis. The results showed that 791 proteins were totally identified from the whey. Of them, 98 proteins between groups 1 (lipopolysaccharide + Saline) and 3 (Saline + Saline), and 34 proteins between groups 2 (lipopolysaccharide + Rg1) and 1 were significantly different. Group 1 than group 3 had significantly more inflammatory factors such as interleukin 6, acute phase proteins, blood coagulation factors, complement proteins, and oxidative stress markers while these factors were reduced in group 2 treated with Rg1. In addition, proteins in group 2 associated with peroxisome-proliferator-activated receptor γ activation and recovery of milk fat and production were upregulated compared to group 1. Therefore, Rg1 may exert its anti-inflammatory effect on lipopolysaccharide-induced mastitis in goats via modulating expression of proteins relating to peroxisome-proliferator-activated receptor γ and toll-like receptor 4 signaling pathway.
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Affiliation(s)
- Yuemin Wang
- Department of Veterinary Medicine, College of Animal Sciences, Zhejiang University, Hang Zhou 310058, PR China.
| | - Yong Zhang
- Department of Veterinary Medicine, College of Animal Sciences, Zhejiang University, Hang Zhou 310058, PR China
| | - Xiaoqing Chi
- Department of Veterinary Medicine, College of Animal Sciences, Zhejiang University, Hang Zhou 310058, PR China
| | - Xiaodan Ma
- Department of Veterinary Medicine, College of Animal Sciences, Zhejiang University, Hang Zhou 310058, PR China
| | - Wei Xu
- Department of Veterinary Medicine, College of Animal Sciences, Zhejiang University, Hang Zhou 310058, PR China
| | - Fushan Shi
- Department of Veterinary Medicine, College of Animal Sciences, Zhejiang University, Hang Zhou 310058, PR China
| | - Songhua Hu
- Department of Veterinary Medicine, College of Animal Sciences, Zhejiang University, Hang Zhou 310058, PR China.
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Mohamed M, Abu Lila AS, Shimizu T, Alaaeldin E, Hussein A, Sarhan HA, Szebeni J, Ishida T. PEGylated liposomes: immunological responses. SCIENCE AND TECHNOLOGY OF ADVANCED MATERIALS 2019; 20:710-724. [PMID: 31275462 PMCID: PMC6598536 DOI: 10.1080/14686996.2019.1627174] [Citation(s) in RCA: 265] [Impact Index Per Article: 53.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/09/2019] [Revised: 05/30/2019] [Accepted: 05/31/2019] [Indexed: 05/10/2023]
Abstract
A commonly held view is that nanocarriers conjugated to polyethylene glycol (PEG) are non-immunogenic. However, many studies have reported that unexpected immune responses have occurred against PEG-conjugated nanocarriers. One unanticipated response is the rapid clearance of PEGylated nanocarriers upon repeat administration, called the accelerated blood clearance (ABC) phenomenon. ABC involves the production of antibodies toward nanocarrier components, including PEG, which reduces the safety and effectiveness of encapsulated therapeutic agents. Another immune response is the hypersensitivity or infusion reaction referred to as complement (C) activation-related pseudoallergy (CARPA). Such immunogenicity and adverse reactivities of PEGylated nanocarriers may be of potential concern for the clinical use of PEGylated therapeutics. Accordingly, screening of the immunogenicity and CARPA reactogenicity of nanocarrier-based therapeutics should be a prerequisite before they can proceed into clinical studies. This review presents PEGylated liposomes, immunogenicity of PEG, the ABC phenomenon, C activation and lipid-induced CARPA from a toxicological point of view, and also addresses the factors that influence these adverse interactions with the immune system.
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Affiliation(s)
- Marwa Mohamed
- Department of Pharmacokinetics and Biopharmaceutics, Institute of Biomedical Sciences, Tokushima University, Tokushima, Japan
- Department of Pharmaceutics, Minia University, Minia, Egypt
| | - Amr S. Abu Lila
- Department of Pharmacokinetics and Biopharmaceutics, Institute of Biomedical Sciences, Tokushima University, Tokushima, Japan
- Department of Pharmaceutics and Industrial Pharmacy, Faculty of Pharmacy, Zagazig University, Zagazig, Egypt
- Department of Pharmaceutics, College of Pharmacy, Hail University, Hail, Saudi Arabia
| | - Taro Shimizu
- Department of Pharmacokinetics and Biopharmaceutics, Institute of Biomedical Sciences, Tokushima University, Tokushima, Japan
| | - Eman Alaaeldin
- Department of Pharmaceutics, Minia University, Minia, Egypt
| | - Amal Hussein
- Department of Pharmaceutics, Minia University, Minia, Egypt
| | | | - Janos Szebeni
- Nanomedicine Research and Education Center, Institute of Pathophysiology, Semmelweis University, Budapest, Hungary
- SeroScience LCC., Cambridge, MA, USA
| | - Tatsuhiro Ishida
- Department of Pharmacokinetics and Biopharmaceutics, Institute of Biomedical Sciences, Tokushima University, Tokushima, Japan
- CONTACT Tatsuhiro Ishida Department of Pharmacokinetics and Biopharmaceutics, Institute of Biomedical Sciences, Tokushima University, 1-78-1, Sho-machi, Tokushima770-8505, Japan
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Intracellular Delivery: An Overview. TARGETED INTRACELLULAR DRUG DELIVERY BY RECEPTOR MEDIATED ENDOCYTOSIS 2019. [DOI: 10.1007/978-3-030-29168-6_1] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
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Jou C, Shah R, Figueroa A, Patel JK. The Role of Inflammatory Cytokines in Cardiac Arrest. J Intensive Care Med 2018; 35:219-224. [DOI: 10.1177/0885066618817518] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
Introduction: Post-cardiac arrest syndrome (PCAS) is characterized by systemic ischemia/reperfusion injury, anoxic brain injury, and post-arrest myocardial dysfunction superimposed on a precipitating pathology. The role of inflammatory cytokines in cardiac arrest remains unclear. Aims: We aimed to describe, with an emphasis on clinical applications, what is known about the role of inflammatory cytokines in cardiac arrest. Data Sources: A PubMed literature review was performed for relevant articles. Only articles in English that studied cytokines in patients with cardiac arrest were included. Results: Cytokines play a crucial role in the pathogenesis of PCAS. Following cardiac arrest, the large release of circulating cytokines mediates the ischemia/reperfusion injury, brain dysfunction, and myocardial dysfunction seen. Interleukins, tumor necrosis factor, and matrix metalloproteinases all play a unique prognostic role in PCAS. High levels of inflammatory cytokines have been associated with mortality and/or poor neurologic outcomes. Interventions to modify the systemic inflammation seen in PCAS continue to be heavily studied. Currently, the only approved medical intervention for comatose patients following cardiac arrest is targeted temperature management. Medical agents, including minocycline and sodium sulfide, have demonstrated promise in animal models. Conclusions: The role of inflammatory cytokines for both short- and long-term outcomes is an important area for future investigation.
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Affiliation(s)
- Christopher Jou
- Resuscitation Research Group, Division of Pulmonary, Critical Care and Sleep Medicine, Department of Medicine, Stony Brook University Medical Center, Stony Brook, NY, USA
| | - Rian Shah
- Resuscitation Research Group, Division of Pulmonary, Critical Care and Sleep Medicine, Department of Medicine, Stony Brook University Medical Center, Stony Brook, NY, USA
| | - Andrew Figueroa
- Resuscitation Research Group, Division of Pulmonary, Critical Care and Sleep Medicine, Department of Medicine, Stony Brook University Medical Center, Stony Brook, NY, USA
| | - Jignesh K. Patel
- Resuscitation Research Group, Division of Pulmonary, Critical Care and Sleep Medicine, Department of Medicine, Stony Brook University Medical Center, Stony Brook, NY, USA
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Chrzanowska M, Modrzejewska A, Modrzejewska M. New insight into the role of the complement in the most common types of retinopathy-current literature review. Int J Ophthalmol 2018; 11:1856-1864. [PMID: 30450319 DOI: 10.18240/ijo.2018.11.19] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2017] [Accepted: 07/25/2018] [Indexed: 11/23/2022] Open
Abstract
Pathological neovascularisation, which is a critical component of diseases such as age-related macular degeneration (AMD), diabetic retinopathy (DR) and retinopathy of prematurity (ROP), is a frequent cause of compromised vision or blindness. Researchers continuously investigate the role of the complement system in the pathogenesis of retinopathy. Studies have confirmed the role of factors H and I in the development of AMD, and factors H and B in the development of DR. Other components, such as C2, C3, and C5, have also been considered. However, findings on the involvement of the complement system in the pathogenesis of ROP are still inconclusive. This paper presents a review of the current literature data, pointing to the novel results and achievements from research into the role of complement components in the development of retinopathy. There is still a need to continue research in new directions, and to gather more detailed information about this problem which will be useful in the treatment of these diseases.
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Affiliation(s)
- Martyna Chrzanowska
- Department of Ophthalmology, Pomeranian Medical University, Szczecin 70-111, Poland
| | - Anna Modrzejewska
- Department of Ophthalmology, Pomeranian Medical University, Szczecin 70-111, Poland
| | - Monika Modrzejewska
- Department of Ophthalmology, Pomeranian Medical University, Szczecin 70-111, Poland
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Kessal K, Liang H, Rabut G, Daull P, Garrigue JS, Docquier M, Melik Parsadaniantz S, Baudouin C, Brignole-Baudouin F. Conjunctival Inflammatory Gene Expression Profiling in Dry Eye Disease: Correlations With HLA-DRA and HLA-DRB1. Front Immunol 2018; 9:2271. [PMID: 30374345 PMCID: PMC6196257 DOI: 10.3389/fimmu.2018.02271] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2018] [Accepted: 09/12/2018] [Indexed: 01/24/2023] Open
Abstract
Purpose: In several multicenter clinical trials, HLA-DR was found to be a potential biomarker of dry eye disease (DED)'s severity and prognosis. Given the fact that HLA-DR receptor is a heterodimer consisting in an alpha and a beta chain, we intended to investigate the correlation of inflammatory targets with the corresponding transcripts, HLA-DRA and HLA-DRB1, to characterize specific targets closely related to HLA-DR expressed in conjunctival cells from patients suffering from DED of various etiologies. Methods: A prospective study was conducted in 88 patients with different forms of DED. Ocular symptom scores, ocular-staining grades, tear breakup time (TBUT) and Schirmer test were evaluated. Superficial conjunctival cells were collected by impression cytology and total RNAs were extracted for analyses using the new NanoString® nCounter technology based on an inflammatory human code set containing 249 inflammatory genes. Results: Two hundred transcripts were reliably detected in conjunctival specimens at various levels ranging from 1 to 222,546 RNA copies. Overall, from the 88 samples, 21 target genes showed a highly significant correlation (R > 0.8) with HLA-DRA and HLA-DRB1, HLA-DRA and B1 presenting the highest correlation (R = 0.9). These selected targets belonged to eight family groups, namely interferon and interferon-stimulated genes, tumor necrosis factor superfamily and related factors, Toll-like receptors and related factors, complement system factors, chemokines/cytokines, the RIPK enzyme family, and transduction signals such as the STAT and MAPK families. Conclusions: We have identified a profile of 21 transcripts correlated with HLA-DR expression, suggesting closely regulated signaling pathways and possible direct or indirect interactions between them. The NanoString® nCounter technology in conjunctival imprints could constitute a reliable tool in the future for wider screening of inflammatory biomarkers in DED, usable in very small samples. Broader combinations of biomarkers associated with HLA-DR could be analyzed to develop new diagnostic approaches, identify tighter pathophysiological gene signatures and personalize DED therapies more efficiently.
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Affiliation(s)
- Karima Kessal
- Sorbonne Université, UPMC Univ Paris 06, INSERM, CNRS, Institut de la Vision, Paris, France.,Department of Ophthalmology III, Quinze-Vingts National Ophthalmology Hospital, Paris, France.,Quinze-Vingts National Ophthalmology Hospital, DHU Sight Restore, INSERM-DGOS CIC 1423, Paris, France
| | - Hong Liang
- Sorbonne Université, UPMC Univ Paris 06, INSERM, CNRS, Institut de la Vision, Paris, France.,Department of Ophthalmology III, Quinze-Vingts National Ophthalmology Hospital, Paris, France.,Quinze-Vingts National Ophthalmology Hospital, DHU Sight Restore, INSERM-DGOS CIC 1423, Paris, France
| | - Ghislaine Rabut
- Department of Ophthalmology III, Quinze-Vingts National Ophthalmology Hospital, Paris, France.,Quinze-Vingts National Ophthalmology Hospital, DHU Sight Restore, INSERM-DGOS CIC 1423, Paris, France
| | | | | | - Mylene Docquier
- iGE3 Genomics Platform University of Geneva, Geneva, Switzerland
| | | | - Christophe Baudouin
- Sorbonne Université, UPMC Univ Paris 06, INSERM, CNRS, Institut de la Vision, Paris, France.,Department of Ophthalmology III, Quinze-Vingts National Ophthalmology Hospital, Paris, France.,Quinze-Vingts National Ophthalmology Hospital, DHU Sight Restore, INSERM-DGOS CIC 1423, Paris, France.,Department of Ophthalmology, Ambroise Paré Hospital, APHP, University of Versailles Saint-Quentin en Yvelines, Boulogne-Billancourt, France
| | - Françoise Brignole-Baudouin
- Sorbonne Université, UPMC Univ Paris 06, INSERM, CNRS, Institut de la Vision, Paris, France.,Quinze-Vingts National Ophthalmology Hospital, DHU Sight Restore, INSERM-DGOS CIC 1423, Paris, France.,Sorbonne Paris Cité Université Paris Descartes, Faculté de Pharmacie de Paris, Paris, France
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40
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Gonçalves MC. Sol-gel Silica Nanoparticles in Medicine: A Natural Choice. Design, Synthesis and Products. Molecules 2018; 23:E2021. [PMID: 30104542 PMCID: PMC6222648 DOI: 10.3390/molecules23082021] [Citation(s) in RCA: 71] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2018] [Revised: 08/01/2018] [Accepted: 08/03/2018] [Indexed: 12/16/2022] Open
Abstract
Silica is one of the most abundant minerals in the Earth's crust, and over time it has been introduced first into human life and later into engineering. Silica is present in the food chain and in the human body. As a biomaterial, silica is widely used in dentistry, orthopedics, and dermatology. Recently amorphous sol-gel SiO₂ nanoparticles (NPs) have appeared as nanocarriers in a wide range of medical applications, namely in drug/gene target delivery and imaging diagnosis, where they stand out for their high biocompatibility, hydrophilicity, enormous flexibility for surface modification with a high payload capacity, and prolonged blood circulation time. The sol-gel process is an extremely versatile bottom-up methodology used in the synthesis of silica NPs, offering a great variety of chemical possibilities, such as high homogeneity and purity, along with full scale pH processing. By introducing organic functional groups or surfactants during the sol-gel process, ORMOSIL NPs or mesoporous NPs are produced. Colloidal route, biomimetic synthesis, solution route and template synthesis (the main sol-gel methods to produce monosized silica nanoparticles) are compared and discussed. This short review goes over some of the emerging approaches in the field of non-porous sol-gel silica NPs aiming at medical applications, centered on the syntheses processes used.
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Affiliation(s)
- M Clara Gonçalves
- Departamento de Engenharia Química, Instituto Superior Técnico, Universidade de Lisboa,Av. Rovisco Pais, 1049-001 Lisboa, Portugal.
- CQE, Centro de Química Estrutural, Instituto Superior Técnico, Universidade de Lisboa,1049-001 Lisboa, Portugal.
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Bolu BS, Sanyal R, Sanyal A. Drug Delivery Systems from Self-Assembly of Dendron-Polymer Conjugates †. Molecules 2018; 23:E1570. [PMID: 29958437 PMCID: PMC6099537 DOI: 10.3390/molecules23071570] [Citation(s) in RCA: 46] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2018] [Revised: 06/20/2018] [Accepted: 06/21/2018] [Indexed: 01/01/2023] Open
Abstract
This review highlights the utilization of dendron-polymer conjugates as building blocks for the fabrication of nanosized drug delivery vehicles. The examples given provide an overview of the evolution of these delivery platforms, from simple micellar containers to smart stimuli- responsive drug delivery systems through their design at the macromolecular level. Variations in chemical composition and connectivity of the dendritic and polymeric segments provide a variety of self-assembled micellar nanostructures that embody desirable attributes of viable drug delivery systems.
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Affiliation(s)
- Burcu Sumer Bolu
- Department of Chemistry, Bogazici University, Bebek, 34342 Istanbul, Turkey.
| | - Rana Sanyal
- Department of Chemistry, Bogazici University, Bebek, 34342 Istanbul, Turkey.
- Center for Life Sciences and Technologies, Bogazici University, 34342 Istanbul, Turkey.
| | - Amitav Sanyal
- Department of Chemistry, Bogazici University, Bebek, 34342 Istanbul, Turkey.
- Center for Life Sciences and Technologies, Bogazici University, 34342 Istanbul, Turkey.
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42
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de Azevedo MDBM, de Melo VHS, Soares CRJ, Miyamoto DM, Katayama RA, Squair PL, Barros CHN, Tasic L. Development and characterisation of polymeric microparticle of poly(d,l-lactic acid) loaded with holmium acetylacetonate. J Microencapsul 2018; 35:281-291. [DOI: 10.1080/02652048.2018.1477843] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/16/2022]
Affiliation(s)
- Mariangela de Burgos M. de Azevedo
- Biotechnology Center, Nuclear and Energy Research Institute (IPEN/CNEN-SP), São Paulo, Brazil
- Biotechnology Center of Amazon, CBA, Manaus – AM, Brazil
| | - Vitor H. S. de Melo
- Biotechnology Center, Nuclear and Energy Research Institute (IPEN/CNEN-SP), São Paulo, Brazil
| | | | - Douglas M. Miyamoto
- Biotechnology Center, Nuclear and Energy Research Institute (IPEN/CNEN-SP), São Paulo, Brazil
| | - Ricardo A. Katayama
- Biotechnology Center, Nuclear and Energy Research Institute (IPEN/CNEN-SP), São Paulo, Brazil
| | - Peterson L. Squair
- Biotechnology Center, Nuclear and Energy Research Institute (IPEN/CNEN-SP), São Paulo, Brazil
| | - Caio H. N. Barros
- Department of Organic Chemistry, Institute of Chemistry, UNICAMP SP, São Paulo, Brazil
| | - Ljubica Tasic
- Department of Organic Chemistry, Institute of Chemistry, UNICAMP SP, São Paulo, Brazil
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43
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Effect of complement component 5 polymorphisms on mastitis resistance in Egyptian buffalo and cattle. Res Vet Sci 2018; 119:45-51. [PMID: 29857245 DOI: 10.1016/j.rvsc.2018.05.015] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2018] [Revised: 05/16/2018] [Accepted: 05/23/2018] [Indexed: 11/20/2022]
Abstract
Mastitis is one of the costliest diseases affecting the world's dairy industry. The important contribution of complement Component 5 (C5) to phagocytosis, which plays a major role in the defence of the bovine mammary gland against infection, makes this component of innate immunity a potential contributor in defending udder against mastitis. The objectives of this study were to sequence and analyse the whole coding region of the C5 gene in Egyptian buffalo and cattle, to detect any nucleotide variations (polymorphisms) and to investigate their associations with milk somatic cell score (SCS) as an indicator of mastitis in dairy animals. We sequenced a buffalo C5 cDNA fragment of 5336 bp (KP221293) and a cattle C5 cDNA fragment of 5303 bp (KP221294), which included the whole coding region and 3-UTR. Buffalo and cattle C5 cDNA shared sequence identity of 99%. The predicted complement C5 proteins consist of 1677 amino acid residues in both animals, one amino acid less than in humans and three amino acids more than in mouse C5 protein. Comparing cDNA sequences of different animals revealed nine novel SNPs in buffalo and seven SNPs in cattle, with two of them being novel. The association analysis revealed that five SNPs in buffalo are highly associated with SCS; indicating the contribution of complement C5 variants in buffalo mastitis resistance. No significant associations were detected between C5 variants and SCS in cattle. This is the first report about C5 variants in buffalo and its association with SCS.
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Kametani Y, Shiina T, Suzuki R, Sasaki E, Habu S. Comparative immunity of antigen recognition, differentiation, and other functional molecules: similarities and differences among common marmosets, humans, and mice. Exp Anim 2018; 67:301-312. [PMID: 29415910 PMCID: PMC6083031 DOI: 10.1538/expanim.17-0150] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023] Open
Abstract
The common marmoset (CM; Callithrix jacchus) is a small New World monkey
with a high rate of pregnancy and is maintained in closed colonies as an experimental
animal species. Although CMs are used for immunological research, such as studies of
autoimmune disease and infectious disease, their immunological characteristics are less
defined than those of other nonhuman primates. We and others have analyzed antigen
recognition-related molecules, the development of hematopoietic stem cells (HSCs), and the
molecules involved in the immune response. CMs systemically express Caja-G, a major
histocompatibility complex class I molecule, and the ortholog of HLA-G, a suppressive
nonclassical HLA class I molecule. HSCs express CD117, while CD34 is not essential for
multipotency. CD117+ cells developed into all hematopoietic cell lineages, but compared
with human HSCs, B cells did not extensively develop when HSCs were transplanted into an
immunodeficient mouse. Although autoimmune models have been successfully established,
sensitization of CMs with some bacteria induced a low protective immunity. In CMs, B cells
were observed in the periphery, but IgG levels were very low compared with those in humans
and mice. This evidence suggests that CM immunity is partially suppressed systemically.
Such immune regulation might benefit pregnancy in CMs, which normally deliver dizygotic
twins, the placentae of which are fused and the immune cells of which are mixed. In this
review, we describe the CM immune system and discuss the possibility of using CMs as a
model of human immunity.
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Affiliation(s)
- Yoshie Kametani
- Department of Molecular Life Sciences, Tokai University School of Medicine, 143 Shimokasuya, Isehara-shi, Kanagawa 259-1193, Japan
| | - Takashi Shiina
- Department of Molecular Life Sciences, Tokai University School of Medicine, 143 Shimokasuya, Isehara-shi, Kanagawa 259-1193, Japan
| | - Ryuji Suzuki
- Department of Rheumatology and Clinical Immunology, Clinical Research Center for Allergy and Rheumatology, Sagamihara National Hospital, National Hospital Organization, 18-1 Sakuradai, Minami-ku, Sagamihara-shi, Kanagawa 252-0392, Japan
| | - Erika Sasaki
- Central Institute for Experimental Animals,3-25-12 Tonomachi, Kawasaki-ku, Kawasaki-shi, Kanagawa 210-0821, Japan
| | - Sonoko Habu
- Department of Immunology, Juntendo University School of Medicine, 2-1-1 Hongo, Bunkyo-ku, Tokyo 113-8421, Japan
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Vafaee A, Davoodnia A, Bozorgmehr MR, Pordel M. Characterization and Molecular Docking Study of New 4-Acetamidoalkyl Pyrazoles As B-Raf /Cox-2 Inhibitors. J STRUCT CHEM+ 2018. [DOI: 10.1134/s0022476618020117] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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46
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The chemical structure of triblock copolymers and the adsorption capacity of perfluorocarbon—core nanoparticles stabilized by them. Colloid Polym Sci 2018. [DOI: 10.1007/s00396-017-4245-z] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Rossi G, Dahlhausen RD, Galosi L, Orosz SE. Avian Ganglioneuritis in Clinical Practice. Vet Clin North Am Exot Anim Pract 2018; 21:33-67. [PMID: 29146031 DOI: 10.1016/j.cvex.2017.08.009] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Avian ganglioneuritis (AG) comprises one of the most intricate pathologies in avian medicine and is researched worldwide. Avian bornavirus (ABV) has been shown to be a causative agent of proventricular dilatation disease in birds. The avian Bornaviridae represent a genetically diverse group of viruses that are widely distributed in captive and wild populations around the world. ABV and other infective agents are implicated as a cause of the autoimmune pathology that leads to AG, similar to human Guillain Barrè syndrome. Management of affected birds is beneficial and currently centered at reducing neurologic inflammation, managing secondary complications, and providing nutritional support.
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Affiliation(s)
- Giacomo Rossi
- Animal Pathology Section, School of Biosciences and Veterinary Medicine, University of Camerino, Via Circonvallazione 93, 62024 Matelica, Italy
| | - Robert D Dahlhausen
- Avian and Exotic Animal Medical Center and Veterinary Molecular Diagnostics, Inc, 5989 Meijer Drive, Suite 5, Milford, OH 45150, USA
| | - Livio Galosi
- Animal Pathology Section, School of Biosciences and Veterinary Medicine, University of Camerino, Via Circonvallazione 93, 62024 Matelica, Italy
| | - Susan E Orosz
- Bird and Exotic Pet Wellness Center, 5166 Monroe Street, Suite 306, Toledo, OH 43623, USA.
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49
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Jha P, Chaturvedi S, Kaul A, Pant P, Anju A, Pal S, Jain N, Mishra AK. Design, physico-chemical and pre-clinical evaluation of a homo-bivalent 99mTc-(BTZ)2DTPA radioligand for targeting dimeric 5-HT1A/5-HT7 receptors. NEW J CHEM 2018. [DOI: 10.1039/c8nj00089a] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
A 99mTc-labelled bis-benzothiazolone-DTPA radio-complex as a SPECT neuroimaging agent.
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Affiliation(s)
- Preeti Jha
- Department of Chemistry
- Indian Institute of Technology Delhi (IITD)
- India
- Division of Cyclotron and Radiopharmaceutical Sciences
- Institute of Nuclear Medicine and Allied Sciences
| | - Shubhra Chaturvedi
- Division of Cyclotron and Radiopharmaceutical Sciences
- Institute of Nuclear Medicine and Allied Sciences
- Defence Research and Development Organization
- Delhi-110054
- India
| | - Ankur Kaul
- Division of Cyclotron and Radiopharmaceutical Sciences
- Institute of Nuclear Medicine and Allied Sciences
- Defence Research and Development Organization
- Delhi-110054
- India
| | - Pradeep Pant
- Department of Chemistry
- Indian Institute of Technology Delhi (IITD)
- India
| | - Anju Anju
- Division of Cyclotron and Radiopharmaceutical Sciences
- Institute of Nuclear Medicine and Allied Sciences
- Defence Research and Development Organization
- Delhi-110054
- India
| | - Sunil Pal
- Division of Cyclotron and Radiopharmaceutical Sciences
- Institute of Nuclear Medicine and Allied Sciences
- Defence Research and Development Organization
- Delhi-110054
- India
| | - Nidhi Jain
- Department of Chemistry
- Indian Institute of Technology Delhi (IITD)
- India
| | - Anil K. Mishra
- Division of Cyclotron and Radiopharmaceutical Sciences
- Institute of Nuclear Medicine and Allied Sciences
- Defence Research and Development Organization
- Delhi-110054
- India
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50
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Shen CY, Jiang JG, Huang CL, Zhu W, Zheng CY. Polyphenols from Blossoms of Citrus aurantium L. var. amara Engl. Show Significant Anti-Complement and Anti-Inflammatory Effects. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2017; 65:9061-9068. [PMID: 28942652 DOI: 10.1021/acs.jafc.7b03759] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Citrus aurantium L. var. amara Engl. (CAVA) was traditionally used as a digestant or expectorant in China. Crude polyphenols (CAVAP-W) extracted from blossoms of CAVA were mainly composed of eriocitrin/neoeriocitrin, eriocitrin/neoeriocitrin, rhoifolin, hesperidin, naringin, rutin, veronicastroside, neohesperidin, and hesperetin by LC-MS analysis. CAVAP-W showed significant anticomplement and anti-inflammatory effects. Due to the close relationship between anticomplement and anti-inflammatory activity, the anti-inflammatory effect was further investigated and the results showed that CAVAP-W significantly suppressed production of interleukin-6 (IL-6), tumor necrosis factor-alpha (TNF-α), interleukin-1beta (IL-1β), and mRNA expression of inducible nitric oxide synthase (iNOS), IL-6, TNF-α, IL-1β, and cyclooxygenase-2 (COX-2) in lipopolysaccharides-stimulated RAW264.7 cells. Furthermore, CAVAP-W inhibited mitogen-activated protein kinase (MAPK) phosphorylation and NF-κB activation through suppressing nuclear translocation of nuclear factor-kappa B (NF-κB) P65, degradation and phosphorylation of IκBα, phosphorylation of IκKα/ß, c-Jun N-terminal kinase (JNK), and P38, and activation of COX-2, thereby exerting the anti-inflammatory effects.
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Affiliation(s)
- Chun-Yan Shen
- College of Food and Bioengineering, South China University of Technology , Guangzhou 510640, China
| | - Jian-Guo Jiang
- College of Food and Bioengineering, South China University of Technology , Guangzhou 510640, China
| | - Chun-Ling Huang
- The Second Affiliated Hospital, Guangzhou University of Chinese Medicine , Guangzhou 510120, China
- Sci-tech Industrial Park, Guangzhou University of Chinese Medicine , Guangzhou 510120, China
| | - Wei Zhu
- The Second Affiliated Hospital, Guangzhou University of Chinese Medicine , Guangzhou 510120, China
| | - Chao-Yang Zheng
- The Second Affiliated Hospital, Guangzhou University of Chinese Medicine , Guangzhou 510120, China
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