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Kordzadeh A, Ramazani Sa A, Mashayekhan S. Adsorption and encapsulation of melittin on covalently functionalized carbon nanotubes; a molecular dynamics simulation study. Comput Biol Med 2023; 166:107393. [PMID: 37741226 DOI: 10.1016/j.compbiomed.2023.107393] [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: 05/13/2023] [Revised: 08/11/2023] [Accepted: 08/26/2023] [Indexed: 09/25/2023]
Abstract
For the first time, molecular dynamics (MD) simulation was used to examine melittin's adsorption and encapsulation on covalently functionalized carbon nanotubes (fCNTs). The CNT wall and terminals were functionalized with carboxy, hydroxyl, and amine functional groups. The findings demonstrated that the melittin would be adsorbed on the fCNT's outer surface when just the CNT terminal is functionalized. On the other hand, melittin is encapsulated inside the nanotube space when the CNTs' walls and terminals are functionalized. Encapsulated melittin has an alpha-helix structure similar to melittin in a water medium. With the use of parameters like root mean square fluctuations (RMSF) and radius of gyration (Rg), the melittin conformational changes were evaluated. According to the findings, the amine functional group significantly alters the melittin's conformation. The wall and terminals fCNTs with hydroxyl and carboxyl could encapsulate melittin inside them with a stable structure. This result will be useful for the design of peptide carriers.
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Affiliation(s)
- Azadeh Kordzadeh
- Chemical and Petroleum Engineering Department, Sharif University of Technology, Tehran, Iran
| | - Ahmad Ramazani Sa
- Chemical and Petroleum Engineering Department, Sharif University of Technology, Tehran, Iran; Institute for Convergence Science & Technology, Center for Bioscience & Technology, Sharif University of Technology, Tehran, 1458889694, Iran.
| | - Shohreh Mashayekhan
- Chemical and Petroleum Engineering Department, Sharif University of Technology, Tehran, Iran
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2
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Wickline SA, Hou KK, Pan H. Peptide-Based Nanoparticles for Systemic Extrahepatic Delivery of Therapeutic Nucleotides. Int J Mol Sci 2023; 24:ijms24119455. [PMID: 37298407 DOI: 10.3390/ijms24119455] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2023] [Revised: 05/18/2023] [Accepted: 05/19/2023] [Indexed: 06/12/2023] Open
Abstract
Peptide-based nanoparticles (PBN) for nucleotide complexation and targeting of extrahepatic diseases are gaining recognition as potent pharmaceutical vehicles for fine-tuned control of protein production (up- and/or down-regulation) and for gene delivery. Herein, we review the principles and mechanisms underpinning self-assembled formation of PBN, cellular uptake, endosomal release, and delivery to extrahepatic disease sites after systemic administration. Selected examples of PBN that have demonstrated recent proof of concept in disease models in vivo are summarized to offer the reader a comparative view of the field and the possibilities for clinical application.
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Affiliation(s)
- Samuel A Wickline
- Division of Cardiology, Department of Medical Engineering, University of South Florida, Tampa, FL 33602, USA
| | - Kirk K Hou
- Department of Ophthalmology, Stein and Doheny Eye Institutes, University of California, Los Angeles, CA 90095, USA
| | - Hua Pan
- Division of Rheumatology, Department of Medicine, Washington University School of Medicine, St. Louis, MO 63110, USA
- Department of Pathology and Immunology, Washington University School of Medicine, St. Louis, MO 63110, USA
- Department of Biomedical Engineering, Washington University in St. Louis, St. Louis, MO 63130, USA
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3
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Nichols JM, Crelli CV, Liu L, Pham HV, Janjic JM, Shepherd AJ. Tracking macrophages in diabetic neuropathy with two-color nanoemulsions for near-infrared fluorescent imaging and microscopy. J Neuroinflammation 2021; 18:299. [PMID: 34949179 PMCID: PMC8697472 DOI: 10.1186/s12974-021-02365-y] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2021] [Accepted: 12/17/2021] [Indexed: 02/08/2023] Open
Abstract
Background The incidence of diabetes and diabetic peripheral neuropathy continues to rise, and studies have shown that macrophages play an important role in their pathogenesis. To date, macrophage tracking has largely been achieved using genetically-encoded fluorescent proteins. Here we present a novel two-color fluorescently labeled perfluorocarbon nanoemulsion (PFC-NE) designed to monitor phagocytic macrophages in diabetic neuropathy in vitro and in vivo using non-invasive near-infrared fluorescent (NIRF) imaging and fluorescence microscopy. Methods Presented PFC-NEs were formulated with perfluorocarbon oil surrounded by hydrocarbon shell carrying two fluorescent dyes and stabilized with non-ionic surfactants. In vitro assessment of nanoemulsions was performed by measuring fluorescent signal stability, colloidal stability, and macrophage uptake and subsequent viability. The two-color PFC-NE was administered to Leprdb/db and wild-type mice by tail vein injection, and in vivo tracking of the nanoemulsion was performed using both NIRF imaging and confocal microscopy to assess its biodistribution within phagocytic macrophages along the peripheral sensory apparatus of the hindlimb. Results In vitro experiments show two-color PFC-NE demonstrated high fluorescent and colloidal stability, and that it was readily incorporated into RAW 264.7 macrophages. In vivo tracking revealed distribution of the two-color nanoemulsion to macrophages within most tissues of Leprdb/db and wild-type mice which persisted for several weeks, however it did not cross the blood brain barrier. Reduced fluorescence was seen in sciatic nerves of both Leprdb/db and wild-type mice, implying that the nanoemulsion may also have difficulty crossing an intact blood nerve barrier. Additionally, distribution of the nanoemulsion in Leprdb/db mice was reduced in several tissues as compared to wild-type mice. This reduction in biodistribution appears to be caused by the increased number of adipose tissue macrophages in Leprdb/db mice. Conclusions The nanoemulsion in this study has the ability to identify phagocytic macrophages in the Leprdb/db model using both NIRF imaging and fluorescence microscopy. Presented nanoemulsions have the potential for carrying lipophilic drugs and/or fluorescent dyes, and target inflammatory macrophages in diabetes. Therefore, we foresee these agents becoming a useful tool in both imaging inflammation and providing potential treatment in diabetic peripheral neuropathy.
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Affiliation(s)
- James M Nichols
- Division of Internal Medicine, Department of Symptom Research, The University of Texas MD Anderson Cancer Center, 6565 MD Anderson Blvd., Houston, TX, 77030, USA
| | - Caitlin V Crelli
- School of Pharmacy, Duquesne University, 600 Forbes Ave., Pittsburgh, PA, 15282, USA
| | - Lu Liu
- School of Pharmacy, Duquesne University, 600 Forbes Ave., Pittsburgh, PA, 15282, USA
| | - Hoang Vu Pham
- Division of Internal Medicine, Department of Symptom Research, The University of Texas MD Anderson Cancer Center, 6565 MD Anderson Blvd., Houston, TX, 77030, USA
| | - Jelena M Janjic
- School of Pharmacy, Duquesne University, 600 Forbes Ave., Pittsburgh, PA, 15282, USA.
| | - Andrew J Shepherd
- Division of Internal Medicine, Department of Symptom Research, The University of Texas MD Anderson Cancer Center, 6565 MD Anderson Blvd., Houston, TX, 77030, USA.
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4
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Giribaldi J, Smith JJ, Schroeder CI. Recent developments in animal venom peptide nanotherapeutics with improved selectivity for cancer cells. Biotechnol Adv 2021; 50:107769. [PMID: 33989705 DOI: 10.1016/j.biotechadv.2021.107769] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2021] [Revised: 05/06/2021] [Accepted: 05/08/2021] [Indexed: 02/07/2023]
Abstract
Animal venoms are a rich source of bioactive peptides that efficiently modulate key receptors and ion channels involved in cellular excitability to rapidly neutralize their prey or predators. As such, they have been a wellspring of highly useful pharmacological tools for decades. Besides targeting ion channels, some venom peptides exhibit strong cytotoxic activity and preferentially affect cancer over healthy cells. This is unlikely to be driven by an evolutionary impetus, and differences in tumor cells and the tumor microenvironment are probably behind the serendipitous selectivity shown by some venom peptides. However, strategies such as bioconjugation and nanotechnologies are showing potential to improve their selectivity and potency, thereby paving the way to efficiently harness new anticancer mechanisms offered by venom peptides. This review aims to highlight advances in nano- and chemotherapeutic tools and prospective anti-cancer drug leads derived from animal venom peptides.
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Affiliation(s)
- Julien Giribaldi
- Center for Cancer Research, National Cancer Institute, National Institutes of Health, Frederick, MD 21702, USA
| | - Jennifer J Smith
- Center for Cancer Research, National Cancer Institute, National Institutes of Health, Frederick, MD 21702, USA
| | - Christina I Schroeder
- Center for Cancer Research, National Cancer Institute, National Institutes of Health, Frederick, MD 21702, USA.
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5
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Zhou J, Wan C, Cheng J, Huang H, Lovell JF, Jin H. Delivery Strategies for Melittin-Based Cancer Therapy. ACS APPLIED MATERIALS & INTERFACES 2021; 13:17158-17173. [PMID: 33847113 DOI: 10.1021/acsami.1c03640] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Melittin (MLT) has been studied preclinically as an anticancer agent based on its broad lytic effects in multiple tumor types. However, unsatisfactory tissue distribution, hemolysis, rapid metabolism, and limited specificity are critical obstacles that limit the translation of MLT. Emerging drug delivery strategies hold promise for targeting, controlled drug release, reduced side effects, and ultimately improved treatment efficiency. In this review, we discuss recent advances in the use of diverse carriers to deliver MLT, with an emphasis on the design and mechanisms of action. We further outline the opportunities for MLT-based cancer immunotherapy.
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Affiliation(s)
- Jie Zhou
- Cancer Center, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, P. R. China
| | - Chao Wan
- Cancer Center, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, P. R. China
| | - Jing Cheng
- Cancer Center, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, P. R. China
| | - Hao Huang
- Guo Life Science Center, Wuhan Shengrun Biotechnology Co. Ltd, Wuhan 430075, P.R. China
| | - Jonathan F Lovell
- Department of Biomedical Engineering, University at Buffalo, State University of New York, Buffalo, New York 14260, United States
| | - Honglin Jin
- Cancer Center, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, P. R. China
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Rai MF, Pan H, Yan H, Sandell LJ, Pham CTN, Wickline SA. Applications of RNA interference in the treatment of arthritis. Transl Res 2019; 214:1-16. [PMID: 31351032 PMCID: PMC6848781 DOI: 10.1016/j.trsl.2019.07.002] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/26/2019] [Revised: 07/02/2019] [Accepted: 07/09/2019] [Indexed: 12/14/2022]
Abstract
RNA interference (RNAi) is a cellular mechanism for post-transcriptional gene regulation mediated by small interfering RNA (siRNA) and microRNA. siRNA-based therapy holds significant promise for the treatment of a wide-range of arthritic diseases. siRNA selectively suppresses the expression of a gene product and can thus achieve the specificity that is lacking in small molecule inhibitors. The potential use of siRNA-based therapy in arthritis, however, has not progressed to clinical trials despite ample evidence for efficacy in preclinical studies. One of the main challenges to clinical translation is the lack of a suitable delivery vehicle to efficiently and safely access diverse pathologies. Moreover, the ideal targets in treatment of arthritides remain elusive given the complexity and heterogeneity of these disease pathogeneses. Herein, we review recent preclinical studies that use RNAi-based drug delivery systems to mitigate inflammation in models of rheumatoid arthritis and osteoarthritis. We discuss a self-assembling peptide-based nanostructure that demonstrates the potential of overcoming many of the critical barriers preventing the translation of this technology to the clinic.
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Affiliation(s)
- Muhammad Farooq Rai
- Department of Orthopedic Surgery, Musculoskeletal Research Center, Washington University School of Medicine, St. Louis, Missouri; Department of Cell Biology & Physiology, Washington University School of Medicine, St. Louis, Missouri
| | - Hua Pan
- Department of Cardiovascular Sciences, University of South Florida Health Heart Institute, Morsani School of Medicine, Tampa, Florida
| | - Huimin Yan
- Department of Medicine, Division of Rheumatology, Washington University School of Medicine, St. Louis, Missouri, USA
| | - Linda J Sandell
- Department of Orthopedic Surgery, Musculoskeletal Research Center, Washington University School of Medicine, St. Louis, Missouri; Department of Cell Biology & Physiology, Washington University School of Medicine, St. Louis, Missouri
| | - Christine T N Pham
- Department of Medicine, Division of Rheumatology, Washington University School of Medicine, St. Louis, Missouri, USA; Department of Pathology and Immunology, Washington University School of Medicine, St. Louis, Missouri.
| | - Samuel A Wickline
- Department of Cardiovascular Sciences, University of South Florida Health Heart Institute, Morsani School of Medicine, Tampa, Florida
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7
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Immunological considerations and concerns as pertinent to whole eye transplantation. Curr Opin Organ Transplant 2019; 24:726-732. [PMID: 31689262 DOI: 10.1097/mot.0000000000000713] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
PURPOSE OF REVIEW The advent of clinical vascularized composite allotransplantation (VCA), offers hope for whole eye transplantation (WET) in patients with devastating vison loss that fails or defies current treatment options. Optic nerve regeneration and reintegration remain the overarching hurdles to WET. However, the realization of WET may indeed be limited by our lack of understanding of the singular immunological features of the eye as pertinent to graft survival and functional vision restoration in the setting of transplantation. RECENT FINDINGS Like other VCA, such as the hand or face, the eye includes multiple tissues with distinct embryonic lineage and differential antigenicity. The ultimate goal of vision restoration through WET requires optimal immune modulation of the graft for successful optic nerve regeneration. Our team is exploring barriers to our understanding of the immunology of the eye in the context of WET including the role of immune privilege and lymphatic drainage on rejection, as well as the effects ischemia, reperfusion injury and rejection on optic nerve regeneration. SUMMARY Elucidation of the unique immunological responses in the eye and adnexa after WET will provide foundational clues that will help inform therapies that prevent immune rejection without hindering optic nerve regeneration or reintegration.
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Permeation of beta-defensin-3 encapsulated with polyethylene glycol in lung surfactant models at air-water interface. Colloids Surf B Biointerfaces 2019; 182:110357. [DOI: 10.1016/j.colsurfb.2019.110357] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2019] [Revised: 07/07/2019] [Accepted: 07/08/2019] [Indexed: 11/21/2022]
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9
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Hou W, Lou JWH, Bu J, Chang E, Ding L, Valic M, Jeon HH, Charron DM, Coolens C, Cui D, Chen J, Zheng G. A Nanoemulsion with A Porphyrin Shell for Cancer Theranostics. Angew Chem Int Ed Engl 2019; 58:14974-14978. [PMID: 31410962 DOI: 10.1002/anie.201908664] [Citation(s) in RCA: 32] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2019] [Indexed: 11/08/2022]
Abstract
A nanoemulsion with a porphyrin shell (NewPS) was created by the self-assembly of porphyrin salt around an oil core. The NewPS system has excellent colloidal stability, is amenable to different porphyrin salts and oils, and is capable of co-loading with chemotherapeutics. The porphyrin salt shell enables porphyrin-dependent optical tunability. The NewPS consisting of pyropheophorbide a mono-salt has a porphyrin shell of ordered J-aggregates, which produced a narrow, red-shifted Q-band with increased absorbance. Upon nanostructure dissociation, the fluorescence and photodynamic reactivity of the porphyrin monomers are restored. The spectrally distinct photoacoustic imaging (at 715 nm by intact NewPS) and fluorescence increase (at 671 nm by disrupted NewPS) allow the monitoring of NewPS accumulation and disruption in mice bearing KB tumors to guide effective photodynamic therapy. Substituting the oil core with Lipiodol affords additional CT contrast, whereas loading paclitaxel into NewPS facilitates drug delivery.
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Affiliation(s)
- Wenxiu Hou
- Princess Margaret Cancer Centre, University Health Network, 101 College St., PMCRT 5-354, Toronto, ON, Canada.,Department of Instrument Science and Engineering, Shanghai Jiao Tong University, Shanghai, China
| | - Jenny W H Lou
- Princess Margaret Cancer Centre, University Health Network, 101 College St., PMCRT 5-354, Toronto, ON, Canada.,Department of Medical Biophysics, University of Toronto, Toronto, ON, Canada
| | - Jiachuan Bu
- Princess Margaret Cancer Centre, University Health Network, 101 College St., PMCRT 5-354, Toronto, ON, Canada
| | - Enling Chang
- Princess Margaret Cancer Centre, University Health Network, 101 College St., PMCRT 5-354, Toronto, ON, Canada
| | - Lili Ding
- Princess Margaret Cancer Centre, University Health Network, 101 College St., PMCRT 5-354, Toronto, ON, Canada
| | - Michael Valic
- Princess Margaret Cancer Centre, University Health Network, 101 College St., PMCRT 5-354, Toronto, ON, Canada
| | - Han Ho Jeon
- Princess Margaret Cancer Centre, University Health Network, 101 College St., PMCRT 5-354, Toronto, ON, Canada
| | - Danielle M Charron
- Princess Margaret Cancer Centre, University Health Network, 101 College St., PMCRT 5-354, Toronto, ON, Canada.,Institute of Biomaterials and Biomedical Engineering, University of Toronto, Toronto, ON, Canada
| | - Catherine Coolens
- Princess Margaret Cancer Centre, University Health Network, 101 College St., PMCRT 5-354, Toronto, ON, Canada
| | - Daxiang Cui
- Department of Instrument Science and Engineering, Shanghai Jiao Tong University, Shanghai, China
| | - Juan Chen
- Princess Margaret Cancer Centre, University Health Network, 101 College St., PMCRT 5-354, Toronto, ON, Canada
| | - Gang Zheng
- Princess Margaret Cancer Centre, University Health Network, 101 College St., PMCRT 5-354, Toronto, ON, Canada.,Department of Medical Biophysics, University of Toronto, Toronto, ON, Canada.,Institute of Biomaterials and Biomedical Engineering, University of Toronto, Toronto, ON, Canada
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10
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Hou W, Lou JWH, Bu J, Chang E, Ding L, Valic M, Jeon HH, Charron DM, Coolens C, Cui D, Chen J, Zheng G. A Nanoemulsion with A Porphyrin Shell for Cancer Theranostics. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201908664] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Wenxiu Hou
- Princess Margaret Cancer Centre University Health Network 101 College St., PMCRT 5-354 Toronto ON Canada
- Department of Instrument Science and Engineering Shanghai Jiao Tong University Shanghai China
| | - Jenny W. H. Lou
- Princess Margaret Cancer Centre University Health Network 101 College St., PMCRT 5-354 Toronto ON Canada
- Department of Medical Biophysics University of Toronto Toronto ON Canada
| | - Jiachuan Bu
- Princess Margaret Cancer Centre University Health Network 101 College St., PMCRT 5-354 Toronto ON Canada
| | - Enling Chang
- Princess Margaret Cancer Centre University Health Network 101 College St., PMCRT 5-354 Toronto ON Canada
| | - Lili Ding
- Princess Margaret Cancer Centre University Health Network 101 College St., PMCRT 5-354 Toronto ON Canada
| | - Michael Valic
- Princess Margaret Cancer Centre University Health Network 101 College St., PMCRT 5-354 Toronto ON Canada
| | - Han Ho Jeon
- Princess Margaret Cancer Centre University Health Network 101 College St., PMCRT 5-354 Toronto ON Canada
| | - Danielle M. Charron
- Princess Margaret Cancer Centre University Health Network 101 College St., PMCRT 5-354 Toronto ON Canada
- Institute of Biomaterials and Biomedical Engineering University of Toronto Toronto ON Canada
| | - Catherine Coolens
- Princess Margaret Cancer Centre University Health Network 101 College St., PMCRT 5-354 Toronto ON Canada
| | - Daxiang Cui
- Department of Instrument Science and Engineering Shanghai Jiao Tong University Shanghai China
| | - Juan Chen
- Princess Margaret Cancer Centre University Health Network 101 College St., PMCRT 5-354 Toronto ON Canada
| | - Gang Zheng
- Princess Margaret Cancer Centre University Health Network 101 College St., PMCRT 5-354 Toronto ON Canada
- Department of Medical Biophysics University of Toronto Toronto ON Canada
- Institute of Biomaterials and Biomedical Engineering University of Toronto Toronto ON Canada
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11
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Li X, Sui Z, Li X, Xu W, Guo Q, Sun J, Jing F. Perfluorooctylbromide nanoparticles for ultrasound imaging and drug delivery. Int J Nanomedicine 2018; 13:3053-3067. [PMID: 29872293 PMCID: PMC5975599 DOI: 10.2147/ijn.s164905] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023] Open
Abstract
Perfluorooctylbromide nanoparticles (PFOB NPs) are a type of multifunctional nanotechnology that has been studied for various medical applications. Commercial ultrasound contrast agents (UCAs) suffer from the following limitations: short half-lives in vivo, high background signal and restricted distribution in the vascular circulation due to their micrometer dimensions. PFOB NPs are new potential UCAs that persist for long periods in the circulatory system, possess a relatively stable echogenic response without increasing the background signal and exhibit lower acoustic attenuation than commercial UCAs. Furthermore, PFOB NPs may also serve as drug delivery vehicles in which drugs are dissolved in the outer lipid or polymer layer for subsequent delivery to target sites in site-targeted therapy. The use of PFOB NPs as carriers has the potential advantage of selectively delivering payloads to the target site while improving visualization of the site using ultrasound (US) imaging. Unfortunately, the application of PFOB NPs to the field of ultrasonography has been limited because of the low intensity of US reflection. Numerous researchers have realized the potential use of PFOB NPs as UCAs and thus have developed alternative approaches to apply PFOB NPs in ultrasonography. In this article, we review the latest approaches for using PFOB NPs to enhance US imaging in vivo. In addition, this article emphasizes the application of PFOB NPs as promising drug delivery carriers for cancer and atherosclerosis treatments, as PFOB NPs can transport different drug payloads for various applications with good efficacy. We also note the challenges and future study directions for the application of PFOB NPs as both a delivery system for therapeutic agents and a diagnostic agent for ultrasonography.
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Affiliation(s)
- Xiao Li
- Department of Clinical Pharmacy, The Affiliated Hospital of Qingdao University, Qingdao, Shandong, People's Republic of China
| | - Zhongguo Sui
- Department of Clinical Pharmacy, The Affiliated Hospital of Qingdao University, Qingdao, Shandong, People's Republic of China
| | - Xin Li
- Department of Clinical Pharmacy, The Affiliated Hospital of Qingdao University, Qingdao, Shandong, People's Republic of China
| | - Wen Xu
- Department of Clinical Pharmacy, The Affiliated Hospital of Qingdao University, Qingdao, Shandong, People's Republic of China
| | - Qie Guo
- Department of Clinical Pharmacy, The Affiliated Hospital of Qingdao University, Qingdao, Shandong, People's Republic of China
| | - Jialin Sun
- Department of Clinical Pharmacy, The Affiliated Hospital of Qingdao University, Qingdao, Shandong, People's Republic of China
| | - Fanbo Jing
- Department of Clinical Pharmacy, The Affiliated Hospital of Qingdao University, Qingdao, Shandong, People's Republic of China
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12
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Delivery systems for antimicrobial peptides. Adv Colloid Interface Sci 2017; 242:17-34. [PMID: 28159168 DOI: 10.1016/j.cis.2017.01.005] [Citation(s) in RCA: 144] [Impact Index Per Article: 20.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2016] [Revised: 01/24/2017] [Accepted: 01/24/2017] [Indexed: 12/18/2022]
Abstract
Due to rapidly increasing resistance development against conventional antibiotics, finding novel approaches for the treatment of infections has emerged as a key health issue. Antimicrobial peptides (AMPs) have attracted interest in this context, and there is by now a considerable literature on the identification such peptides, as well as on their optimization to reach potent antimicrobial and anti-inflammatory effects at simultaneously low toxicity against human cells. In comparison, delivery systems for antimicrobial peptides have attracted considerably less interest. However, such delivery systems are likely to play a key role in the development of potent and safe AMP-based therapeutics, e.g., through reducing chemical or biological degradation of AMPs either in the formulation or after administration, by reducing adverse side-effects, by controlling AMP release rate, by promoting biofilm penetration, or through achieving co-localization with intracellular pathogens. Here, an overview is provided of the current understanding of delivery systems for antimicrobial peptides, with special focus on AMP-carrier interactions, as well as consequences of these interactions for antimicrobial and related biological effects of AMP-containing formulations.
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Misra SK, Ye M, Kim S, Pan D. Highly efficient anti-cancer therapy using scorpion 'NanoVenin'. Chem Commun (Camb) 2014; 50:13220-3. [PMID: 25061638 DOI: 10.1039/c4cc04748f] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Host defence peptidotoxins from animal venoms have been identified to possess substantial anticancer properties. Towards a safer, translatable approach, we have developed a viable chemical methodology based on a well-defined, self-assembled polymeric nano-architecture for controlled delivery of toxins derived from scorpion venom.
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Affiliation(s)
- Santosh K Misra
- Department of Bioengineering and Beckman Institute, University of Illinois at Urbana-Champaign, 502 N. Busey, Urbana, IL 61801, USA.
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14
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Janjic JM, Shao P, Zhang S, Yang X, Patel SK, Bai M. Perfluorocarbon nanoemulsions with fluorescent, colloidal and magnetic properties. Biomaterials 2014; 35:4958-68. [PMID: 24674463 DOI: 10.1016/j.biomaterials.2014.03.006] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2014] [Accepted: 03/03/2014] [Indexed: 10/25/2022]
Abstract
Bimodal imaging agents that combine magnetic resonance imaging (MRI) and nearinfrared (NIR) imaging formulated as nanoemulsions became increasingly popular for imaging inflammation in vivo. Quality of in vivo imaging using nanoemulsions is directly dependent on their integrity and stability. Here we report the design of nanoemulsions for bimodal imaging, where both photostability and colloidal stability are equally addressed. A highly chemically and photo stable quaterrylenediimide dye was introduced into perfluoro-15-crown-5 ether (PCE) nanoemulsions. The nanoemulsions were prepared with PCE and Miglyol 812N mixed at 1:1 v/v ratio as internal phase stabilized by non-ionic surfactants. Data shows exceptional colloidal stability demonstrated as unchanged droplet size (~130 nm) and polydispersity (<0.15) after 182 days follow up at both 4 and 25 °C. Nanoemulsions also sustained the exposure to mechanical and temperature stress, and prolonged exposure to light without changes in droplet size, (19)F signal or fluorescence signal. No toxicity was observed in vitro in model inflammatory cells upon 24 h exposure while confocal microscopy showed that nanoemulsions droplets accumulated in the cytoplasm. Overall, our data demonstrates that design of bimodal imaging agents requires consideration of stability of each imaging component and that of the nanosystem as a whole to achieve excellent imaging performance.
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Affiliation(s)
- Jelena M Janjic
- Graduate School of Pharmaceutical Sciences, Mylan School of Pharmacy, Duquesne University, Pittsburgh, PA 15282, USA.
| | - Pin Shao
- Molecular Imaging Laboratory, Department of Radiology, University of Pittsburgh School of Medicine, Pittsburgh, PA 15219, USA
| | - Shaojuan Zhang
- Molecular Imaging Laboratory, Department of Radiology, University of Pittsburgh School of Medicine, Pittsburgh, PA 15219, USA; Department of Diagnostic Radiology, The First Hospital of Medical School, Xi'an Jiaotong University, Xi'an, Shaanxi 710061, China
| | - Xun Yang
- Bayer School of Natural and Environmental Sciences, Duquesne University, Pittsburgh, PA 15282, USA
| | - Sravan K Patel
- Graduate School of Pharmaceutical Sciences, Mylan School of Pharmacy, Duquesne University, Pittsburgh, PA 15282, USA
| | - Mingfeng Bai
- Molecular Imaging Laboratory, Department of Radiology, University of Pittsburgh School of Medicine, Pittsburgh, PA 15219, USA; Department of Bioengineering, University of Pittsburgh, Pittsburgh, PA 15261, USA; University of Pittsburgh Cancer Institute, Pittsburgh, PA 15232, USA.
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Patel SK, Zhang Y, Pollock JA, Janjic JM. Cyclooxgenase-2 inhibiting perfluoropoly (ethylene glycol) ether theranostic nanoemulsions-in vitro study. PLoS One 2013; 8:e55802. [PMID: 23409048 PMCID: PMC3567136 DOI: 10.1371/journal.pone.0055802] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2012] [Accepted: 01/02/2013] [Indexed: 12/31/2022] Open
Abstract
Cylcooxgenase-2 (COX-2) expressing macrophages, constituting a major portion of tumor mass, are involved in several pro-tumorigenic mechanisms. In addition, macrophages are actively recruited by the tumor and represent a viable target for anticancer therapy. COX-2 specific inhibitor, celecoxib, apart from its anticancer properties was shown to switch macrophage phenotype from tumor promoting to tumor suppressing. Celecoxib has low aqueous solubility, which may limit its tumor inhibiting effect. As opposed to oral administration, we propose that maximum anticancer effect may be achieved by nanoemulsion mediated intravenous delivery. Here we report multifunctional celecoxib nanoemulsions that can be imaged by both near-infrared fluorescence (NIRF) and 19F magnetic resonance. Celecoxib loaded nanoemulsions showed a dose dependent uptake in mouse macrophages as measured by 19F NMR and NIRF signal intensities of labeled cells. Dramatic inhibition of intracellular COX-2 enzyme was observed in activated macrophages upon nanoemulsion uptake. COX-2 enzyme inhibition was statistically equivalent between free drug and drug loaded nanoemulsion. However, nanoemulsion mediated drug delivery may be advantageous, helping to avoid systemic exposure to celecoxib and related side effects. Dual molecular imaging signatures of the presented nanoemulsions allow for future in vivo monitoring of the labeled macrophages and may help in examining the role of macrophage COX-2 inhibition in inflammation-cancer interactions. These features strongly support the future use of the presented nanoemulsions as anti-COX-2 theranostic nanomedicine with possible anticancer applications.
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Affiliation(s)
- Sravan Kumar Patel
- Graduate School of Pharmaceutical Sciences, Mylan School of Pharmacy, Duquesne University, Pittsburgh, Pennsylvania, United States of America
| | - Yang Zhang
- Graduate School of Pharmaceutical Sciences, Mylan School of Pharmacy, Duquesne University, Pittsburgh, Pennsylvania, United States of America
| | - John A. Pollock
- Department of Biological Sciences, Bayer School of Natural and Environmental Sciences, Duquesne University, Pittsburgh, Pennsylvania, United States of America
| | - Jelena M. Janjic
- Graduate School of Pharmaceutical Sciences, Mylan School of Pharmacy, Duquesne University, Pittsburgh, Pennsylvania, United States of America
- * E-mail:
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16
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Lee SJ, Wang S, Borschel W, Heyman S, Gyore J, Nichols CG. Secondary anionic phospholipid binding site and gating mechanism in Kir2.1 inward rectifier channels. Nat Commun 2013; 4:2786. [PMID: 24270915 PMCID: PMC3868208 DOI: 10.1038/ncomms3786] [Citation(s) in RCA: 52] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2013] [Accepted: 10/16/2013] [Indexed: 12/03/2022] Open
Abstract
Inwardly rectifying potassium (Kir) channels regulate multiple tissues. All Kir channels require interaction of phosphatidyl-4,5-bisphosphate (PIP2) at a crystallographically identified binding site, but an additional nonspecific secondary anionic phospholipid (PL(-)) is required to generate high PIP2 sensitivity of Kir2 channel gating. The PL(-)-binding site and mechanism are yet to be elucidated. Here we report docking simulations that identify a putative PL(-)-binding site, adjacent to the PIP2-binding site, generated by two lysine residues from neighbouring subunits. When either lysine is mutated to cysteine (K64C and K219C), channel activity is significantly decreased in cells and in reconstituted liposomes. Directly tethering K64C to the membrane by modification with decyl-MTS generates high PIP2 sensitivity in liposomes, even in the complete absence of PL(-)s. The results provide a coherent molecular mechanism whereby PL(-) interaction with a discrete binding site results in a conformational change that stabilizes the high-affinity PIP2 activatory site.
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Affiliation(s)
- Sun-Joo Lee
- Department of Cell Biology and Physiology and the Center for Investigation of Membrane Excitability Diseases, Washington University School of Medicine, St. Louis, Missouri 63110, USA
| | - Shizhen Wang
- Department of Cell Biology and Physiology and the Center for Investigation of Membrane Excitability Diseases, Washington University School of Medicine, St. Louis, Missouri 63110, USA
| | - William Borschel
- Department of Cell Biology and Physiology and the Center for Investigation of Membrane Excitability Diseases, Washington University School of Medicine, St. Louis, Missouri 63110, USA
| | - Sarah Heyman
- Department of Cell Biology and Physiology and the Center for Investigation of Membrane Excitability Diseases, Washington University School of Medicine, St. Louis, Missouri 63110, USA
| | - Jacob Gyore
- Department of Cell Biology and Physiology and the Center for Investigation of Membrane Excitability Diseases, Washington University School of Medicine, St. Louis, Missouri 63110, USA
| | - Colin G. Nichols
- Department of Cell Biology and Physiology and the Center for Investigation of Membrane Excitability Diseases, Washington University School of Medicine, St. Louis, Missouri 63110, USA
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Matsunaga TO, Sheeran PS, Luois S, Streeter JE, Mullin LB, Banerjee B, Dayton PA. Phase-change nanoparticles using highly volatile perfluorocarbons: toward a platform for extravascular ultrasound imaging. Theranostics 2012; 2:1185-98. [PMID: 23382775 PMCID: PMC3563153 DOI: 10.7150/thno.4846] [Citation(s) in RCA: 91] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2012] [Accepted: 11/02/2012] [Indexed: 12/20/2022] Open
Abstract
Recent efforts using perfluorocarbon (PFC) nanoparticles in conjunction with acoustic droplet vaporization has introduced the possibility of expanding the diagnostic and therapeutic capability of ultrasound contrast agents to beyond the vascular space. Our laboratories have developed phase-change nanoparticles (PCNs) from the highly volatile PFCs decafluorobutane (DFB, bp =-2 °C) and octafluoropropane (OFP, bp =-37 °C ) for acoustic droplet vaporization. Studies with commonly used clinical ultrasound scanners have demonstrated the ability to vaporize PCN emulsions with frequencies and mechanical indices that may significantly decrease tissue bioeffects. In addition, these contrast agents can be formulated to be stable at physiological temperatures and the perfluorocarbons can be mixed to modulate the balance between sensitivity to ultrasound and general stability. We herein discuss our recent efforts to develop finely-tuned diagnostic/molecular imaging agents for tissue interrogation. We discuss studies currently under investigation as well as potential diagnostic and therapeutic paradigms that may emerge as a result of formulating PCNs with low boiling point PFCs.
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Li Y, Xiang Q, Zhang Q, Huang Y, Su Z. Overview on the recent study of antimicrobial peptides: origins, functions, relative mechanisms and application. Peptides 2012; 37:207-15. [PMID: 22800692 DOI: 10.1016/j.peptides.2012.07.001] [Citation(s) in RCA: 316] [Impact Index Per Article: 26.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/18/2012] [Revised: 06/30/2012] [Accepted: 07/02/2012] [Indexed: 01/06/2023]
Abstract
Antimicrobial peptides (AMPs), which are produced by several species including insects, other animals, micro-organisms and synthesis, are a critical component of the natural defense system. With the growing problem of pathogenic organisms resistant to conventional antibiotics, especially with the emergence of NDM-1, there is increased interest in the pharmacological application of AMPs. They can protect against a broad array of infectious agents, such as bacteria, fungi, parasite, virus and cancer cells. AMPs have a very good future in the application in pharmaceuticals industry and food additive. This review focuses on the AMPs from different origins in these recent years, and discusses their various functions and relative mechanisms of action. It will provide some detailed files for clinical research of pharmaceuticals industry and food additive in application.
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Affiliation(s)
- Yanmei Li
- Biopharmaceutical Research and Development Center, College of Life Science and Technology, Jinan University, Guangzhou 510632, Guangdong, China
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