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Kita A, Kedeshian K, Hong M, Hoffman L. An in vitro model for postoperative cranial nerve dysfunction and a proposed method of rehabilitation with N-acetylcysteine microparticles. Eur Arch Otorhinolaryngol 2024; 281:3805-3812. [PMID: 38649541 PMCID: PMC11211122 DOI: 10.1007/s00405-024-08622-z] [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: 02/23/2024] [Accepted: 03/16/2024] [Indexed: 04/25/2024]
Abstract
PURPOSE When operating near cranial motor nerves, transient postoperative weakness of target muscles lasting weeks to months is often observed. As nerves are typically intact at a procedure's completion, paresis is hypothesized to result from a combination of neurapraxia and axonotmesis. As both neurapraxia and axonotmesis involve Schwann cell injury and require remyelination, we developed an in vitro RSC96 Schwann cell model of injury using hydrogen peroxide (H2O2) to induce oxidative stress and investigated the efficacy of candidate therapeutic agents to promote RSC96 viability. As a first step in developing a long-term local administration strategy, the most promising of these agents was incorporated into sustained-release microparticles and investigated for bioactivity using this assay. METHODS The concentration of H2O2 which reduced viability by 50% was determined to establish a standard for inducing oxidative stress in RSC96 cultures. Fresh cultures were then co-dosed with H2O2 and the potential therapeutics melatonin, N-acetylcysteine, resveratrol, and 4-aminopyridine. Schwann cell viability was evaluated and the most efficacious agent, N-acetylcysteine, was encapsulated into microparticles. Eluted samples of N-acetylcysteine from microparticles was evaluated for retained bioactivity. RESULTS 100 µM N-acetylcysteine improved the viability of Schwann cells dosed with H2O2. 100 µM Microparticle-eluted N-acetylcysteine also enhanced Schwann cell viability. CONCLUSION We developed a Schwann cell culture model of iatrogenic nerve injury and used this to identify N-acetylcysteine as an agent to promote recovery. N-acetylcysteine was packaged into microparticles and demonstrated promise as a locally administrable agent to reduce oxidative stress in Schwann cells.
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Affiliation(s)
- Ashley Kita
- Department of Head and Neck Surgery, David Geffen School of Medicine at University of California Los Angeles, 10883 Le Conte Avenue, CHS 63-170, Los Angeles, CA, 90095, USA.
| | - Katherine Kedeshian
- Department of Head and Neck Surgery, David Geffen School of Medicine at University of California Los Angeles, 10883 Le Conte Avenue, CHS 63-170, Los Angeles, CA, 90095, USA
| | - Michelle Hong
- Department of Head and Neck Surgery, David Geffen School of Medicine at University of California Los Angeles, 10883 Le Conte Avenue, CHS 63-170, Los Angeles, CA, 90095, USA
| | - Larry Hoffman
- Department of Head and Neck Surgery, David Geffen School of Medicine at University of California Los Angeles, 10883 Le Conte Avenue, CHS 63-170, Los Angeles, CA, 90095, USA
- Vestibular Neuroscience Laboratory, Brain Research Institute, David Geffen School of Medicine at University of California Los Angeles, Los Angeles, CA, USA
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Kedeshian K, Hong M, Hoffman L, Kita A. N-acetylcysteine microparticles reduce cisplatin-induced RSC96 Schwann cell toxicity. Laryngoscope Investig Otolaryngol 2024; 9:e1256. [PMID: 38765675 PMCID: PMC11099882 DOI: 10.1002/lio2.1256] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2023] [Revised: 12/03/2023] [Accepted: 04/16/2024] [Indexed: 05/22/2024] Open
Abstract
Objectives Cisplatin is known to cause inner ear dysfunction. There is growing evidence that cisplatin-induced demyelination of spiral or Scarpa's ganglion neurons may play an additional role in drug-induced ototoxicity alongside afferent neuron injury. As Schwann cells produce myelin, there may be an opportunity to reduce ototoxic inner ear damage by promoting Schwann cell viability. This work describes a cellular model of cisplatin-induced Schwann cell injury and investigates the ability of the antioxidant N-acetylcysteine to promote Schwann cell viability. A local delivery system of drug-eluting microparticles was then fabricated, characterized, and investigated for bioactivity. Methods RSC96 rat Schwann cells were dosed with varying concentrations of cisplatin to obtain a dose curve and identify the lethal concentration of 50% of the cells (LC50). In subsequent experiments, RSC96 cells were co-treated with cisplatin and both resuspended or eluted N-acetylcysteine. Cell viability was assessed with the CCK8 assay. Results The LC50 dose of cisplatin was determined to be 3.76 μM (p = 2.2 x 10-16). When co-dosed with cisplatin and a therapeutic concentration of resuspended or eluted N-acetylcysteine, Schwann cells had an increased viability compared to cells dosed with cisplatin alone. Conclusion RSC96 Schwann cell injury following cisplatin insult is characterized in this in vitro model. Cisplatin caused injury at physiologic concentrations and N-acetylcysteine improved cell viability and mitigated this injury. N-acetylcysteine was packaged into microparticles and eluted N-acetylcysteine retained its ability to increase cell viability, thus demonstrating promise as a therapeutic to offset cisplatin-induced ototoxicity. Level of Evidence N/A Laryngoscope, 2023.
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Affiliation(s)
- Katherine Kedeshian
- Department of Head and Neck SurgeryDavid Geffen School of Medicine at University of California Los AngelesLos AngelesCaliforniaUSA
| | - Michelle Hong
- Department of Head and Neck SurgeryDavid Geffen School of Medicine at University of California Los AngelesLos AngelesCaliforniaUSA
| | - Larry Hoffman
- Department of Head and Neck SurgeryDavid Geffen School of Medicine at University of California Los AngelesLos AngelesCaliforniaUSA
- Vestibular Neuroscience Laboratory, Brain Research InstituteDavid Geffen School of Medicine at University of California Los AngelesLos AngelesCaliforniaUSA
| | - Ashley Kita
- Department of Head and Neck SurgeryDavid Geffen School of Medicine at University of California Los AngelesLos AngelesCaliforniaUSA
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Kedeshian K, Hong M, Hoffman L, Kita A. N-acetylcysteine Microparticles Reduce Cisplatin-induced RSC96 Schwann Cell Toxicity. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2023:2023.10.31.564430. [PMID: 37961184 PMCID: PMC10635004 DOI: 10.1101/2023.10.31.564430] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/15/2023]
Abstract
Objectives Cisplatin is known to cause inner ear dysfunction. There is growing evidence that cisplatin-induced demyelination of spiral or Scarpa's ganglion neurons may play an additional role in drug-induced ototoxicity alongside afferent neuron injury. As Schwann cells produce myelin, there may be an opportunity to reduce ototoxic inner ear damage by promoting Schwann cell viability. This work describes a cellular model of cisplatin-induced Schwann cell injury and investigates the ability of the antioxidant N-acetylcysteine to promote Schwann cell viability. A local delivery system of drug-eluting microparticles was then fabricated, characterized, and investigated for bioactivity. Methods RSC96 rat Schwann cells were dosed with varying concentrations of cisplatin to obtain a dose curve and identify the lethal concentration of 50% of the cells (LC 50 ). In subsequent experiments, RSC96 cells were co-treated with cisplatin and both resuspended or eluted N-acetylcysteine. Cell viability was assessed with the CCK8 assay. Results The LC 50 dose of cisplatin was determined to be 3.76 μM (p=2.2 × 10 -16 ). When co-dosed with cisplatin and therapeutic concentration of resuspended or eluted N-acetylcysteine, Schwann cells had an increased viability compared to cells dosed with cisplatin alone. Conclusion RSC96 Schwann cell injury following cisplatin insult is characterized in this in vitro model. Cisplatin caused injury at physiologic concentrations and N-acetylcysteine improved cell viability and mitigated this injury. N-acetylcysteine was packaged into microparticles and eluted N-acetylcysteine retained its ability to increase cell viability, thus demonstrating promise as a therapeutic to offset cisplatin-induced ototoxicity. Lay Summary Cisplatin is a chemotherapeutic agent known to cause balance and hearing problems through damage to the inner ear. This project explored cisplatin injury in a Schwann cell culture model and packaged an antioxidant into microparticles suitable for future drug delivery applications.
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Saksena J, Hamilton AE, Gilbert RJ, Zuidema JM. Nanomaterial payload delivery to central nervous system glia for neural protection and repair. Front Cell Neurosci 2023; 17:1266019. [PMID: 37941607 PMCID: PMC10628439 DOI: 10.3389/fncel.2023.1266019] [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: 07/24/2023] [Accepted: 10/06/2023] [Indexed: 11/10/2023] Open
Abstract
Central nervous system (CNS) glia, including astrocytes, microglia, and oligodendrocytes, play prominent roles in traumatic injury and degenerative disorders. Due to their importance, active pharmaceutical ingredients (APIs) are being developed to modulate CNS glia in order to improve outcomes in traumatic injury and disease. While many of these APIs show promise in vitro, the majority of APIs that are systemically delivered show little penetration through the blood-brain barrier (BBB) or blood-spinal cord barrier (BSCB) and into the CNS, rendering them ineffective. Novel nanomaterials are being developed to deliver APIs into the CNS to modulate glial responses and improve outcomes in injury and disease. Nanomaterials are attractive options as therapies for central nervous system protection and repair in degenerative disorders and traumatic injury due to their intrinsic capabilities in API delivery. Nanomaterials can improve API accumulation in the CNS by increasing permeation through the BBB of systemically delivered APIs, extending the timeline of API release, and interacting biophysically with CNS cell populations due to their mechanical properties and nanoscale architectures. In this review, we present the recent advances in the fields of both locally implanted nanomaterials and systemically administered nanoparticles developed for the delivery of APIs to the CNS that modulate glial activity as a strategy to improve outcomes in traumatic injury and disease. We identify current research gaps and discuss potential developments in the field that will continue to translate the use of glia-targeting nanomaterials to the clinic.
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Affiliation(s)
- Jayant Saksena
- Department of Biomedical Engineering, Rensselaer Polytechnic Institute, Troy, NY, United States
- Center for Biotechnology and Interdisciplinary Studies, Rensselaer Polytechnic Institute, Troy, NY, United States
- Department of Materials Science and Engineering, Rensselaer Polytechnic Institute, Troy, NY, United States
| | - Adelle E. Hamilton
- Department of Biomedical Engineering, Rensselaer Polytechnic Institute, Troy, NY, United States
- Center for Biotechnology and Interdisciplinary Studies, Rensselaer Polytechnic Institute, Troy, NY, United States
| | - Ryan J. Gilbert
- Department of Biomedical Engineering, Rensselaer Polytechnic Institute, Troy, NY, United States
- Center for Biotechnology and Interdisciplinary Studies, Rensselaer Polytechnic Institute, Troy, NY, United States
- Albany Stratton Veterans Affairs Medical Center, Albany, NY, United States
| | - Jonathan M. Zuidema
- Department of Biochemistry and Molecular Pharmacology, Mario Negri Institute for Pharmacological Research IRCCS, Milan, Italy
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Hong MK, Echanique KA, Hoffman LF, Kita AE. Designing a Prolonged Method of Therapeutic Delivery to Support Rehabilitation From Ototoxic Damage in a Schwann Cell Model. Otol Neurotol 2023; 44:373-381. [PMID: 36791364 PMCID: PMC10038897 DOI: 10.1097/mao.0000000000003839] [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] [Indexed: 02/17/2023]
Abstract
HYPOTHESIS The ototoxicity of gentamicin and cisplatin can be evaluated with a Schwann cell model to screen for otoprotective agents that can be encapsulated into poly (lactic-co-glycolic acid) (PLGA) microparticles for drug delivery to the inner ear. BACKGROUND Aminoglycosides and cisplatin are widely prescribed but known to cause ototoxicity. There is strong evidence that compromise to Schwann cells ensheathing inner ear afferent neurons results in inner ear dysfunction mimicking drug-induced ototoxicity. There is a need for a model for ototoxic demyelination to screen medications for protective potential and to subsequently target and tune the delivery of any promising agents. METHODS RT4-D6P2T rat schwannoma cells were used as a Schwann cell model to assess gentamicin and cisplatin toxicity and to screen for protective agents. Cell viability was evaluated with the MTT cell proliferation assay. N -acetylcysteine (NAC) was encapsulated into a PLGA microparticle, and its elution profile was determined. RESULTS The estimated 50% lethal concentration dose for gentamicin was 805.6 μM, which was 46-fold higher than that for cisplatin (17.5 μM). In several trials, cells dosed with NAC and cisplatin demonstrated a 22.6% ( p < 0.001) increase in cell viability when compared with cisplatin alone. However, this protective effect was not consistent across all trials. NAC was encapsulated into a PLGA microparticle and elution plateaued at 5 days. CONCLUSION When dosed at their respective therapeutic ranges, cisplatin is more likely than gentamicin to induce damage to the Schwann cell model. Although NAC demonstrates an uncertain role in protecting against cisplatin-induced Schwann cell cytotoxicity, this study establishes a method to screen for other otoprotective medications to encapsulate into a tunable microparticle for localized drug delivery.
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Affiliation(s)
- Michelle K Hong
- Department of Head and Neck Surgery, David Geffen School of Medicine at UCLA, Los Angeles, California
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Clickable Biomaterials for Modulating Neuroinflammation. Int J Mol Sci 2022; 23:ijms23158496. [PMID: 35955631 PMCID: PMC9369181 DOI: 10.3390/ijms23158496] [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: 06/23/2022] [Revised: 07/27/2022] [Accepted: 07/27/2022] [Indexed: 02/04/2023] Open
Abstract
Crosstalk between the nervous and immune systems in the context of trauma or disease can lead to a state of neuroinflammation or excessive recruitment and activation of peripheral and central immune cells. Neuroinflammation is an underlying and contributing factor to myriad neuropathologies including neurodegenerative diseases like Alzheimer’s disease and Parkinson’s disease; autoimmune diseases like multiple sclerosis; peripheral and central nervous system infections; and ischemic and traumatic neural injuries. Therapeutic modulation of immune cell function is an emerging strategy to quell neuroinflammation and promote tissue homeostasis and/or repair. One such branch of ‘immunomodulation’ leverages the versatility of biomaterials to regulate immune cell phenotypes through direct cell-material interactions or targeted release of therapeutic payloads. In this regard, a growing trend in biomaterial science is the functionalization of materials using chemistries that do not interfere with biological processes, so-called ‘click’ or bioorthogonal reactions. Bioorthogonal chemistries such as Michael-type additions, thiol-ene reactions, and Diels-Alder reactions are highly specific and can be used in the presence of live cells for material crosslinking, decoration, protein or cell targeting, and spatiotemporal modification. Hence, click-based biomaterials can be highly bioactive and instruct a variety of cellular functions, even within the context of neuroinflammation. This manuscript will review recent advances in the application of click-based biomaterials for treating neuroinflammation and promoting neural tissue repair.
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Madarshahian S, Enayati M, Vinyes Parés G, Ufheil G, Abbaspourrad A. Solid phase wax coating of N-acetylcysteine (NAC) to decrease its solubility profile as a ready to mix supplement. RSC Adv 2022; 12:17550-17558. [PMID: 35765435 PMCID: PMC9192162 DOI: 10.1039/d1ra09279k] [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: 12/22/2021] [Accepted: 06/07/2022] [Indexed: 11/21/2022] Open
Abstract
N-Acetylcysteine (NAC) has health benefits attributed to its antioxidant properties and disulfide bond cleavage ability. Unfortunately, solutions of NAC are acidic with an undesirable taste and an unpleasant aftertaste. A method for slowing NAC release in water was developed using a solid phase wax coating. A coating of natural waxes, using food grade corn oil as the solvent and surfactants to facilitate the wax coating on the particles was used to decrease the solubility of NAC powder, crystals, and granules in water. A high NAC loading, between 55 and 91% for NAC granules and NAC crystals, was achieved as measured using LC-MS. The NAC wax-coated particles were fully characterized, and microscopy and SEM images revealed the shape, morphology, and size of the particles. Conductometry was used to study NAC release profile in water from wax-coated particles and the results indicate that solid phase wax coatings slowed the release of NAC into water.
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Affiliation(s)
- Sara Madarshahian
- Department of Food Science, College of Agriculture and Life Sciences, Cornell University Ithaca 14853 NY USA
| | - Mojtaba Enayati
- Department of Food Science, College of Agriculture and Life Sciences, Cornell University Ithaca 14853 NY USA
| | - Gerard Vinyes Parés
- Nestlé Product Technology Center Nestlé Health Science Bridgewater NJ 08807 USA
| | | | - Alireza Abbaspourrad
- Department of Food Science, College of Agriculture and Life Sciences, Cornell University Ithaca 14853 NY USA
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Synthesis, characterization and in vitro evaluation of a gelatin-based platform with antioxidant and nitric oxide releasing property. Eur Polym J 2021. [DOI: 10.1016/j.eurpolymj.2021.110395] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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10
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Abedi F, Davaran S, Hekmati M, Akbarzadeh A, Baradaran B, Moghaddam SV. An improved method in fabrication of smart dual-responsive nanogels for controlled release of doxorubicin and curcumin in HT-29 colon cancer cells. J Nanobiotechnology 2021; 19:18. [PMID: 33422062 PMCID: PMC7797119 DOI: 10.1186/s12951-020-00764-6] [Citation(s) in RCA: 42] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2020] [Accepted: 12/26/2020] [Indexed: 02/06/2023] Open
Abstract
The combination therapy which has been proposed as the strategy for the cancer treatment could achieve a synergistic effect for cancer therapies and reduce the dosage of the applied drugs. On account of the the unique properties as the high absorbed water content, biocompatibility, and flexibility, the targeting nanogels have been considred as a suitable platform. Herein, a non-toxic pH/thermo-responsive hydrogel P(NIPAAm-co-DMAEMA) was synthesized and characterized through the free-radical polymerization and expanded upon an easy process for the preparation of the smart responsive nanogels; that is, the nanogels were used for the efficient and controlled delivery of the anti-cancer drug doxorubicin (DOX) and chemosensitizer curcumin (CUR) simultaneously like a promising strategy for the cancer treatment. The size of the nanogels, which were made, was about 70 nm which is relatively optimal for the enhanced permeability and retention (EPR) effects. The DOX and CUR co-loaded nanocarriers were prepared by the high encapsulation efficiency (EE). It is important to mention that the controlled drug release behavior of the nanocarriers was also investigated. An enhanced ability of DOX and CUR-loaded nanoformulation to induce the cell apoptosis in the HT-29 colon cancer cells which represented the greater antitumor efficacy than the single-drug formulations or free drugs was resulted through the In vitro cytotoxicity. Overall, according to the data, the simultaneous delivery of the dual drugs through the fabricated nanogels could synergistically potentiate the antitumor effects on the colon cancer (CC). ![]()
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Affiliation(s)
- Fatemeh Abedi
- Department of Organic Chemistry, Faculty of Pharmaceutical Chemistry, Tehran Medical Sciences, Islamic Azad University, Tehran, Iran.,Drug Applied Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Soodabeh Davaran
- Drug Applied Research Center, Tabriz University of Medical Sciences, Tabriz, Iran. .,Department of Medicinal Chemistry, Faculty of Pharmacy, Tabriz University of Medical Science, Tabriz, Iran.
| | - Malak Hekmati
- Department of Organic Chemistry, Faculty of Pharmaceutical Chemistry, Tehran Medical Sciences, Islamic Azad University, Tehran, Iran
| | - Abolfazl Akbarzadeh
- Department of Medical Nanotechnology, Faculty of Advanced Medical Sciences, Tabriz University of Medical Sciences, Tabriz, Iran.,Universal Scientific Education and Research Network (USERN), Tabriz, Iran
| | - Behzad Baradaran
- Immunology Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
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Wang Y, Dillon KM, Li Z, Winckler EW, Matson JB. Alleviating Cellular Oxidative Stress through Treatment with Superoxide-Triggered Persulfide Prodrugs. Angew Chem Int Ed Engl 2020; 59:16698-16704. [PMID: 32592216 PMCID: PMC7719095 DOI: 10.1002/anie.202006656] [Citation(s) in RCA: 33] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2020] [Indexed: 12/21/2022]
Abstract
Overproduction of superoxide anion (O2.- ), the primary cellular reactive oxygen species (ROS), is implicated in various human diseases. To reduce cellular oxidative stress caused by overproduction of superoxide, we developed a compound that reacts with O2.- to release a persulfide (RSSH), a type of reactive sulfur species related to the gasotransmitter hydrogen sulfide (H2 S). Termed SOPD-NAC, this persulfide donor reacts specifically with O2.- , decomposing to generate N-acetyl cysteine (NAC) persulfide. To enhance persulfide delivery to cells, we conjugated the SOPD motif to a short, self-assembling peptide (Bz-CFFE-NH2 ) to make a superoxide-responsive, persulfide-donating peptide (SOPD-Pep). Both SOPD-NAC and SOPD-Pep delivered persulfides/H2 S to H9C2 cardiomyocytes and lowered ROS levels as confirmed by quantitative in vitro fluorescence imaging studies. Additional in vitro studies on RAW 264.7 macrophages showed that SOPD-Pep mitigated toxicity induced by phorbol 12-myristate 13-acetate (PMA) more effectively than SOPD-NAC and several control compounds, including common H2 S donors.
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Affiliation(s)
| | | | - Zhao Li
- Department of of Chemistry, Virginia Tech Center for Drug Discovery, and Macromolecules Innovation Institute, Virginia Tech, Blacksburg, VA 24061, United States
| | - Ethan W. Winckler
- Department of of Chemistry, Virginia Tech Center for Drug Discovery, and Macromolecules Innovation Institute, Virginia Tech, Blacksburg, VA 24061, United States
| | - John B. Matson
- Department of of Chemistry, Virginia Tech Center for Drug Discovery, and Macromolecules Innovation Institute, Virginia Tech, Blacksburg, VA 24061, United States
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Wang Y, Dillon KM, Li Z, Winckler EW, Matson JB. Alleviating Cellular Oxidative Stress through Treatment with Superoxide‐Triggered Persulfide Prodrugs. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202006656] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Yin Wang
- Department of of ChemistryVirginia Tech Center for Drug DiscoveryMacromolecules Innovation InstituteVirginia Tech Blacksburg VA 24061 USA
| | - Kearsley M. Dillon
- Department of of ChemistryVirginia Tech Center for Drug DiscoveryMacromolecules Innovation InstituteVirginia Tech Blacksburg VA 24061 USA
| | - Zhao Li
- Department of of ChemistryVirginia Tech Center for Drug DiscoveryMacromolecules Innovation InstituteVirginia Tech Blacksburg VA 24061 USA
| | - Ethan W. Winckler
- Department of of ChemistryVirginia Tech Center for Drug DiscoveryMacromolecules Innovation InstituteVirginia Tech Blacksburg VA 24061 USA
| | - John B. Matson
- Department of of ChemistryVirginia Tech Center for Drug DiscoveryMacromolecules Innovation InstituteVirginia Tech Blacksburg VA 24061 USA
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Ge H, Lin P, Luo T, Yan Z, Xiao J, Miao S, Chen J. Fabrication of Ligusticum chuanxiong polylactic acid microspheres: A promising way to enhance the hepatoprotective effect on bioactive ingredients. Food Chem 2020; 317:126377. [PMID: 32113137 DOI: 10.1016/j.foodchem.2020.126377] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2019] [Revised: 12/30/2019] [Accepted: 02/08/2020] [Indexed: 02/08/2023]
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Huang J, Liu F, Han X, Zhang L, Hu Z, Jiang Q, Wang Z, Ran H, Wang D, Li P. Nanosonosensitizers for Highly Efficient Sonodynamic Cancer Theranostics. Theranostics 2018; 8:6178-6194. [PMID: 30613291 PMCID: PMC6299698 DOI: 10.7150/thno.29569] [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: 08/29/2018] [Accepted: 10/02/2018] [Indexed: 12/25/2022] Open
Abstract
Background: Multifunctional nanoplatforms with diagnostic-imaging and targeted therapeutic functionality (theranostics) are of great interest in the field of precision nanomedicine. The emerging sonodynamic therapy (SDT) combined with sonosensitizers under the guidance of photoacoustic (PA) imaging is highly expected to accurately eliminate cancer cells/tissue. Methods: Unique core/shell-structured theranostic FA-HMME-MNPs-PLGA nanoparticles (FHMP NPs, FA: folate, HMME: hematoporphyrin monomethyl ether, MNPs: melanin nanoparticles, PLGA: poly (lactic-co-glycolic) acid) were constructed by the integration of MNPs (for PA imaging) in the core and HMME in the shell for enhanced PA imaging-guided SDT, which were further functionalized with a tumor-targeting ligand, FA. The PA imaging-guided SDT was systematically and successfully demonstrated both in vitro and in vivo. The high biosafety of FHMP NPs was also systematically evaluated. Results: The synthesized FHMP NPs with a broad optical absorption not only possess high PA-imaging contrast enhancement capability but also exhibit significant SDT efficiency. Importantly, such a PLGA based nanoplatform improved light stability of HMME, enhancing sonodynamic performance and facilitated delivery of MNPs to the tumor region. Meanwhile, a combined effect between HMME and MNPs was discovered and verified. Furthermore, a sonosensitizer assisted by ultrasound irradiation engenders reactive oxygen species (ROS)-mediated cytotoxicity toward tumor cells/tissue. Both in vitro cell-level and systematic in vivo xenograft evaluations on tumor-bearing mice demonstrated that the selective killing effect of ROS on tumor cells was assisted by FHMP NPs, which played an active role in the suppression of tumor growth with high biosafety. Conclusion: A theranostic nanoplatform was successfully constructed, achieving PA imaging-guided SDT against breast cancer cells/tissue. More importantly, MNPs and HMME in one platform with combined effect for enhancing PA imaging was demonstrated. This unique theranostic nanoplatform with multiple capabilities paves a new way toward personalized medicine by rational utilization.
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Affiliation(s)
- Ju Huang
- Institute of Ultrasound Imaging, The Second Affiliated Hospital of Chongqing Medical University, Chongqing 400010, P. R. China
| | - Fengqiu Liu
- Institute of Ultrasound Imaging, The Second Affiliated Hospital of Chongqing Medical University, Chongqing 400010, P. R. China
| | - Xiaoxia Han
- Institute of Ultrasound Imaging, The Second Affiliated Hospital of Chongqing Medical University, Chongqing 400010, P. R. China
| | - Liang Zhang
- Institute of Ultrasound Imaging, The Second Affiliated Hospital of Chongqing Medical University, Chongqing 400010, P. R. China
| | - Zhongqian Hu
- Department of Ultrasound, Zhongda Hospital, Southeast University, Nanjing 210009, P. R. China
| | - Qinqin Jiang
- Institute of Ultrasound Imaging, The Second Affiliated Hospital of Chongqing Medical University, Chongqing 400010, P. R. China
| | - Zhigang Wang
- Institute of Ultrasound Imaging, The Second Affiliated Hospital of Chongqing Medical University, Chongqing 400010, P. R. China
| | - Haitao Ran
- Institute of Ultrasound Imaging, The Second Affiliated Hospital of Chongqing Medical University, Chongqing 400010, P. R. China
| | - Dong Wang
- Department of Ultrasound, The First Affiliated Hospital of Chongqing Medical University Chongqing 400010, P. R. China
| | - Pan Li
- Institute of Ultrasound Imaging, The Second Affiliated Hospital of Chongqing Medical University, Chongqing 400010, P. R. China
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Powell CR, Dillon KM, Wang Y, Carrazzone RJ, Matson JB. A Persulfide Donor Responsive to Reactive Oxygen Species: Insights into Reactivity and Therapeutic Potential. Angew Chem Int Ed Engl 2018; 57:6324-6328. [PMID: 29697170 PMCID: PMC6159213 DOI: 10.1002/anie.201803087] [Citation(s) in RCA: 84] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2018] [Indexed: 12/20/2022]
Abstract
Persulfides (RSSH) have been hypothesized as critical components in sulfur-mediated redox cycles and as potential signaling compounds, similar to hydrogen sulfide (H2 S). Hindering the study of persulfides is a lack of persulfide-donor compounds with selective triggers that release discrete persulfide species. Reported here is the synthesis and characterization of a ROS-responsive (ROS=reactive oxygen species), self-immolative persulfide donor. The donor, termed BDP-NAC, showed selectivity towards H2 O2 over other potential oxidative or nucleophilic triggers, resulting in the sustained release of the persulfide of N-acetyl cysteine (NAC) over the course of 2 h, as measured by LCMS. Exposure of H9C2 cardiomyocytes to H2 O2 revealed that BDP-NAC mitigated the effects of a highly oxidative environment in a dose-dependent manner over relevant controls and to a greater degree than common H2 S donors sodium sulfide (Na2 S) and GYY4137. BDP-NAC also rescued cells more effectively than a non-persulfide-releasing control compound in concert with common H2 S donors and thiols.
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Affiliation(s)
- Chadwick R Powell
- Department of Chemistry, Virginia Tech Center for Drug Discovery, Macromolecules Innovation Institute, Virginia Tech, Blacksburg, VA, 24061, USA
| | - Kearsley M Dillon
- Department of Chemistry, Virginia Tech Center for Drug Discovery, Macromolecules Innovation Institute, Virginia Tech, Blacksburg, VA, 24061, USA
| | - Yin Wang
- Department of Chemistry, Virginia Tech Center for Drug Discovery, Macromolecules Innovation Institute, Virginia Tech, Blacksburg, VA, 24061, USA
| | - Ryan J Carrazzone
- Department of Chemistry, Virginia Tech Center for Drug Discovery, Macromolecules Innovation Institute, Virginia Tech, Blacksburg, VA, 24061, USA
| | - John B Matson
- Department of Chemistry, Virginia Tech Center for Drug Discovery, Macromolecules Innovation Institute, Virginia Tech, Blacksburg, VA, 24061, USA
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16
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Pinezich MR, Russell LN, Murphy NP, Lampe KJ. Encapsulated oligodendrocyte precursor cell fate is dependent on PDGF-AA release kinetics in a 3D microparticle-hydrogel drug delivery system. J Biomed Mater Res A 2018; 106:2402-2411. [PMID: 29660252 DOI: 10.1002/jbm.a.36432] [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: 09/25/2017] [Revised: 02/08/2018] [Accepted: 04/05/2018] [Indexed: 12/14/2022]
Abstract
Biomaterial drug delivery systems (DDS) can be used to regulate growth factor release and combat the limited intrinsic regeneration capabilities of central nervous system (CNS) tissue following injury and disease. Of particular interest are systems that aid in oligodendrocyte regeneration, as oligodendrocytes generate myelin which surrounds neuronal axons and helps transmit signals throughout the CNS. Oligodendrocyte precursor cells (OPCs) are found in small numbers in the adult CNS, but are unable to effectively differentiate following CNS injury. Delivery of signaling molecules can initiate a favorable OPC response, such as proliferation or differentiation. Here, we investigate the delivery of one such molecule, platelet derived growth factor-AA (PDGF-AA), from poly(lactic-co-glycolic) acid microparticles to OPCs in a 3D polyethylene glycol-based hydrogel. The goal of this DDS was to better understand the relationship between PDGF-AA release kinetics and OPC fate. The system approximates native brain tissue stiffness, while incorporating PDGF-AA under seven different delivery scenarios. Within this DDS, supply of PDGF-AA followed by PDGF-AA withdrawal caused OPCs to upregulate gene expression of myelin basic protein (MBP) by factors of 1.6-9.2, whereas continuous supply of PDGF-AA caused OPCs to remain proliferative. At the protein expression level, we observed an upregulation in O1, a marker for mature oligodendrocytes. Together, these results show that burst release followed by withdrawal of PDGF-AA from a hydrogel DDS stimulates survival, proliferation, and differentiation of OPCs in vitro. Our results could inform the development of improved neural regeneration strategies that incorporate delivery of PDGF-AA to the injured CNS. © 2018 Wiley Periodicals, Inc. J Biomed Mater Res Part A: 106A:2402-2411, 2018.
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Affiliation(s)
- Meghan R Pinezich
- Department of Chemical Engineering, University of Virginia, 102 Engineers' Way, Charlottesville, VA, 22904
| | - Lauren N Russell
- Department of Chemical Engineering, University of Virginia, 102 Engineers' Way, Charlottesville, VA, 22904
| | - Nicholas P Murphy
- Department of Chemical Engineering, University of Virginia, 102 Engineers' Way, Charlottesville, VA, 22904
| | - Kyle J Lampe
- Department of Chemical Engineering, University of Virginia, 102 Engineers' Way, Charlottesville, VA, 22904
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17
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Powell CR, Dillon KM, Wang Y, Carrazzone RJ, Matson JB. A Persulfide Donor Responsive to Reactive Oxygen Species: Insights into Reactivity and Therapeutic Potential. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201803087] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Affiliation(s)
- Chadwick R. Powell
- Department of Chemistry Virginia Tech Center for Drug Discovery Macromolecules Innovation Institute Virginia Tech Blacksburg VA 24061 USA
| | - Kearsley M. Dillon
- Department of Chemistry Virginia Tech Center for Drug Discovery Macromolecules Innovation Institute Virginia Tech Blacksburg VA 24061 USA
| | - Yin Wang
- Department of Chemistry Virginia Tech Center for Drug Discovery Macromolecules Innovation Institute Virginia Tech Blacksburg VA 24061 USA
| | - Ryan J. Carrazzone
- Department of Chemistry Virginia Tech Center for Drug Discovery Macromolecules Innovation Institute Virginia Tech Blacksburg VA 24061 USA
| | - John B. Matson
- Department of Chemistry Virginia Tech Center for Drug Discovery Macromolecules Innovation Institute Virginia Tech Blacksburg VA 24061 USA
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