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Satyal U, Weader D, Valentine H, Stromyer M, Youngs WJ, Abbosh PH. Abstract 4058: Second generation imidazolium compounds as tumor-specific intravesical therapeutic agents for non-muscle invasive bladder cancer. Cancer Res 2022. [DOI: 10.1158/1538-7445.am2022-4058] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Abstract
Introduction: Intravesical therapy is critical in management of high-risk non-muscle invasive bladder cancer. The most effective intravesical therapy, BCG, has an ongoing shortage, while other second line therapies are not very effective, leaving radical cystectomy (RC) as the most effective option for cancer control. However, RC is a morbid, life-altering, and expensive procedure. Unfortunately, high-grade superficial disease is associated with cancer-specific mortality in 1/3 of the patients. Improved second line therapies or development of a BCG alternative would increase the rate of bladder preservation and survival, especially in light of the recurrent BCG shortages which have plagued bladder cancer patients. We earlier demonstrated that our first-generation imidazolium compounds are effective exfoliants that induce apoptosis via mitochondrial pathway and had potential to be used as intravesical therapy for bladder cancer. In this study, we developed and investigated second generation imidazolium compounds that have selective toxicity towards tumor tissues. We also investigated the mitochondrial target(s) of these imidazolium compounds.
Methods: Second generation imidazolium compounds were screened for their toxicity against various bladder cancer cell lines using CellTiter-Glo and colony forming assay. Apoptosis induction was confirmed using western blot and propidium-iodide incorporation analysis. In vitro toxicity comparison between BBN-tumor organoids and normal organoids was performed using confocal microscopy. In vivo toxicity of these compounds was studied in normal mice. For candidate target identification, mitochondria from cells grown in SILAC heavy/light media were treated with biotinylated imidazolium compound or a mixture of biotinylated compound plus TPP1 (a first-generation imidazolium compound). Lysates were subjected to streptavidin pull down followed by LC-MS/MS proteomics analysis. Shortlisted target candidates were knocked down using siRNA followed by imidazolium treatment to assess their candidacy as the imidazolium target.
Results: All second-generation imidazolium compounds had significantly higher toxicity to bladder cancer cell lines compared to first generation compounds. Compounds IS154 and IS155 were shown to be cancer selective. These two compounds showed no change in histopathology of murine bladder urothelium 24 h after intravesical instillation. Proteomics data from SILAC experiments prioritized three possible targets of the imidazolium compounds which are currently being explored.
Conclusions: Second generation imidazolium compounds are tumor-specific and highly potent compounds that are worthy of further study as an intravesical agent for the treatment of high grade superficial bladder cancer.
Citation Format: Uttam Satyal, David Weader, Henkel Valentine, Michael Stromyer, Wiley J. Youngs, Philip H. Abbosh. Second generation imidazolium compounds as tumor-specific intravesical therapeutic agents for non-muscle invasive bladder cancer [abstract]. In: Proceedings of the American Association for Cancer Research Annual Meeting 2022; 2022 Apr 8-13. Philadelphia (PA): AACR; Cancer Res 2022;82(12_Suppl):Abstract nr 4058.
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Southerland MR, DeBord MA, Johnson NA, Crabtree SR, Alexander NE, Stromyer ML, Wagers PO, Panzner MJ, Wesdemiotis C, Shriver LP, Tessier CA, Youngs WJ. Synthesis, characterization, in vitro SAR study, and preliminary in vivo toxicity evaluation of naphthylmethyl substituted bis-imidazolium salts. Bioorg Med Chem 2021; 30:115893. [PMID: 33333447 PMCID: PMC7903221 DOI: 10.1016/j.bmc.2020.115893] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2020] [Revised: 11/11/2020] [Accepted: 11/20/2020] [Indexed: 12/12/2022]
Abstract
A series of novel bis-imidazolium salts was synthesized, characterized, and evaluated in vitro against a panel of non-small cell lung cancer (NSCLC) cells. Two imidazolium cores were connected with alkyl chains of varying lengths to develop a structure activity relationship (SAR). Increasing the length of the connecting alkyl chain was shown to correlate to an increase in the anti-proliferative activity. The National Cancer Institute's NCI-60 human tumor cell line screen confirmed this trend. The compound containing a decyl linker chain, 10, was chosen for further in vivo toxicity studies with C578BL/6 mice. The compound was well tolerated by the mice and all of the animals survived and gained weight over the course of the study.
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Affiliation(s)
| | - Michael A DeBord
- Department of Chemistry, The University of Akron, Akron, OH 44325-3601, USA
| | - Nicholas A Johnson
- Department of Chemistry, Ashland University, 401 College Ave., Ashland, OH 44805, USA
| | - Steven R Crabtree
- Department of Chemistry, The University of Akron, Akron, OH 44325-3601, USA
| | | | - Michael L Stromyer
- Department of Chemistry, The University of Akron, Akron, OH 44325-3601, USA
| | - Patrick O Wagers
- Department of Chemistry, The University of Akron, Akron, OH 44325-3601, USA
| | - Matthew J Panzner
- Department of Chemistry, The University of Akron, Akron, OH 44325-3601, USA
| | - Chrys Wesdemiotis
- Department of Chemistry, The University of Akron, Akron, OH 44325-3601, USA
| | - Leah P Shriver
- Department of Chemistry, The University of Akron, Akron, OH 44325-3601, USA
| | - Claire A Tessier
- Department of Chemistry, The University of Akron, Akron, OH 44325-3601, USA
| | - Wiley J Youngs
- Department of Chemistry, The University of Akron, Akron, OH 44325-3601, USA.
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Stromyer ML, Weader DJ, Satyal U, Abbosh PH, Youngs WJ. Synthesis, Characterization, and Biological Activity of Anthraquinone-Substituted Imidazolium Salts for the Treatment of Bladder Cancer. Bladder Cancer 2020. [DOI: 10.3233/blc-200340] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
BACKGROUND: Bladder cancer is one of the most common types of cancer diagnosed each year, and more than half of patients have non-muscle invasive bladder cancer (NMIBC). The standard of care for patients with high-grade NMIBC is Bacillus Calmette-Guerin (BCG). Unfortunately, multiple BCG shortages have limited access to this treatment. Available alternatives using intravesical administration of chemotherapy have some efficacy, but lack prospective validation and long-term outcomes. Development of novel intravesical therapies may provide more active alternatives to BCG for patients with high-grade NMIBC. OBJECTIVE: To develop an optimal imidazolium salt for the intravesical treatment of NMIBC and determine preliminary in vitro activity of anthraquinone-substituted imidazolium salts. METHODS: The development of the anthraquinone-substituted imidazolium salts was undertaken in an attempt to increase the potency of this class of compounds by incorporating the quinone functional group observed in the chemotherapeutics doxorubicin, valrubicin, and mitomycin. All compounds were characterized by 1H and 13C NMR spectroscopy and infrared spectroscopy. Furthermore, these imidazolium salts were tested for in vitro cytotoxicity by the Developmental Therapeutics Program (DTP) on the NCI-60 human tumor cell line screening. Additional in vitro testing was performed against diverse bladder cancer cell lines (RT112, TCCSUP, J82, and UMUC13) using CellTiter-Glo® assays and colony-forming assays. RESULTS: The NCI-60 cell line screening indicated that compound 7 had the highest activity and was concluded to be the optimal compound for further study. Using CellTiter-Glo® assays on bladder cancer cell lines, 50% growth inhibitory concentration (IC50) values were determined to range from 32–50μM after an exposure of 1 h, for compound 7. Further evaluation of the compound by colony-forming assays showed the complete inhibition of growth at 10 days post a 100μM dose of compound 7 for 1 h. CONCLUSIONS: The most active lipophilic anthraquinone imidazolium salt, compound 7, could be a viable treatment for non-muscle invasive bladder cancer as it exhibits a cell-killing effect at a 1 h time period and completely inhibits cancer regrowth in colony-forming assays.
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Affiliation(s)
| | - David J. Weader
- The Department of Chemistry, The University of Akron, Akron, OH, USA
- Molecular Therapeutics Program, Fox Chase Cancer Center, Philadelphia, PA, USA
| | - Uttam Satyal
- Molecular Therapeutics Program, Fox Chase Cancer Center, Philadelphia, PA, USA
| | - Philip H. Abbosh
- Molecular Therapeutics Program, Fox Chase Cancer Center, Philadelphia, PA, USA
| | - Wiley J. Youngs
- The Department of Chemistry, The University of Akron, Akron, OH, USA
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Satyal U, Srivastava A, Weader DJ, Stromyer ML, Southerland MR, Youngs WJ, Abbosh PH. Abstract 6366: Novel imidazolium compounds as intravesical therapeutic agents for non-muscle invasive bladder cancer. Cancer Res 2020. [DOI: 10.1158/1538-7445.am2020-6366] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Abstract
Introduction: Intravesical therapy has critical role in the treatment of high-risk non-muscle invasive bladder cancer. Due to ongoing shortage of BCG and lack of effective alternatives, there is an urgent need for novel intravesical chemotherapeutic agents. In this study, we investigated novel imidazolium compounds on bladder cancer cell lines to characterize activity and mechanism of action and in a mouse model to assess their efficacy and toxicity as intravesical agents.
Methods: Three different imidazolium compounds (IS23, TPP1 and TCK1) were screened for their activity against six bladder cancer cell lines at various concentrations and different exposure time. The GI50s for each compound were then used to assess induction of apoptosis in vitro and to study mechanism of action. In vivo efficacy and toxicity of these compounds was studied in normal mice. The BBN mouse model was used to assess in vivo efficacy of these compounds, as it recapitulates the histological and genetic characteristics of human bladder tumors. The drinking water of 6 to 8 weeks old mice was supplemented with 0.05% BBN for 12 weeks, then switched to regular drinking water. Mice were randomly assigned into 5 intravesical treatment groups with 50:50 male:female make up in each group: 1) IS23; 2) TPP1; 3) TCK1; 4) Gemcitabine; 5) vehicle. Drugs and vehicle were instilled for four weeks. Each mouse was subjected to excretory computed tomography urogram to assess the filling defects in the bladder before treatment and every two weeks following the treatment. Mice were euthanized if size of filling defect in urograms exceeded 1/3 of the bladder, developed hydronephrosis, or 4 weeks after completion of intravesical treatment, whichever came first.
Results: All imidazolium compounds showed toxicity to bladder cancer cells, TCK1 and TPP1 being the most and least potent respectively. They were also highly effective in killing bladder cancer cells with a 15-min GI90-dose. They briskly induced apoptosis by directly causing Cytochrome C expulsion from isolated mitochondria. Intravesical imidazolium compounds did not cause significant histopathological changes in normal bladder compared to vehicle group, but TPP1 was found to be tumor specific in vivo. TPP1 induced apoptosis in tumor without affecting normal bladder urothelium. In BBN-induced mice, 4/4 IS23-treated mice had filling defects while 8/15, 5/6, 10/11, and 7/8 TPP1-, TCK1-, vehicle-, and gemcitabine-treated mice had filling defects on urograms consistent with tumor. TPP1- and TCK1-treated mice had smaller filling defects compared to vehicle group mice, which was also confirmed histopathologically.
Conclusions: TPP1 has a novel and potent mechanism and is worthy of further study as an intravesical agent for the treatment of high-grade superficial bladder cancer. It appears to work through a mitochondrial-centric mechanism and have cancer-specificity.
Citation Format: Uttam Satyal, Abhishek Srivastava, David J. Weader, Michael L. Stromyer, Marie R. Southerland, Wiley J. Youngs, Philip H. Abbosh. Novel imidazolium compounds as intravesical therapeutic agents for non-muscle invasive bladder cancer [abstract]. In: Proceedings of the Annual Meeting of the American Association for Cancer Research 2020; 2020 Apr 27-28 and Jun 22-24. Philadelphia (PA): AACR; Cancer Res 2020;80(16 Suppl):Abstract nr 6366.
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Stromyer ML, Southerland MR, Satyal U, Sikder RK, Weader DJ, Baughman JA, Youngs WJ, Abbosh PH. Synthesis, characterization, and biological activity of a triphenylphosphonium-containing imidazolium salt against select bladder cancer cell lines. Eur J Med Chem 2020; 185:111832. [PMID: 31718944 PMCID: PMC7224591 DOI: 10.1016/j.ejmech.2019.111832] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2019] [Revised: 10/28/2019] [Accepted: 10/28/2019] [Indexed: 01/26/2023]
Abstract
Imidazolium salts have shown great promise as anticancer materials. A new imidazolium salt (TPP1), with a triphenylphosphonium substituent, has been synthesized and evaluated for in vitro and in vivo cytotoxicity against bladder cancer. TPP1 was determined to have a GI50 ranging from 200 to 250 μM over a period of 1 h and the ability to effectively inhibit bladder cancer. TPP1 induces apoptosis, and it appears to act as a direct mitochondrial toxin. TPP1 was applied intravesically to a bladder cancer mouse model based on the carcinogen N-butyl-N-(4-hydroxybutyl)nitrosamine (BBN). Cancer selectivity of TPP1 was demonstrated, as BBN-induced tumors exhibited apoptosis but normal adjacent urothelium did not. These results suggest that TPP1 may be a promising intravesical agent for the treatment of bladder cancer.
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Affiliation(s)
- Michael L Stromyer
- Department of Chemistry, The University of Akron, 190 East Buchtel Commons, Akron, OH, 44325, USA
| | - Marie R Southerland
- Department of Chemistry, The University of Akron, 190 East Buchtel Commons, Akron, OH, 44325, USA
| | - Uttam Satyal
- Molecular Therapeutics Program, Fox Chase Cancer Center, 333 Cottman Avenue, Philadelphia, PA, 19111, USA
| | - Rahmat K Sikder
- Molecular Therapeutics Program, Fox Chase Cancer Center, 333 Cottman Avenue, Philadelphia, PA, 19111, USA
| | - David J Weader
- Department of Chemistry, The University of Akron, 190 East Buchtel Commons, Akron, OH, 44325, USA; Molecular Therapeutics Program, Fox Chase Cancer Center, 333 Cottman Avenue, Philadelphia, PA, 19111, USA
| | - Jessi A Baughman
- Department of Chemistry, The University of Akron, 190 East Buchtel Commons, Akron, OH, 44325, USA
| | - Wiley J Youngs
- Department of Chemistry, The University of Akron, 190 East Buchtel Commons, Akron, OH, 44325, USA.
| | - Philip H Abbosh
- Molecular Therapeutics Program, Fox Chase Cancer Center, 333 Cottman Avenue, Philadelphia, PA, 19111, USA.
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Emhoff K, Balaraman L, Simpson SR, Stromyer ML, Kalil HF, Beemiller JR, Sikatzki P, Eshelman TS, Salem AMH, DeBord MA, Panzner MJ, Youngs WJ, Boyd WC. Synthesis and Characterization of Cobalt(II) N, N'-Diphenylazodioxide Complexes. ACS Omega 2018; 3:16021-16027. [PMID: 31458240 PMCID: PMC6643636 DOI: 10.1021/acsomega.8b01200] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 05/31/2018] [Accepted: 11/13/2018] [Indexed: 06/10/2023]
Abstract
Removal of chloride from CoCl2 with TlPF6 in acetonitrile, followed by addition of excess nitrosobenzene, yielded the eight-coordinate cobalt(II) complex salt [Co{Ph(O)NN(O)Ph}4](PF6)2, shown by single-crystal X-ray analysis to have a distorted tetragonal geometry. The analogous treatment of the bipyridyl complex Co(bpy)Cl2 yielded the mixed-ligand cobalt(II) complex salt [Co(bpy){Ph(O)NN(O)Ph}2](PF6)2, whose single-crystal X-ray structure displays a trigonal prismatic geometry, similar to that of the iron(II) cation in the previously known complex salt [Fe{Ph(O)NN(O)Ph}3](FeCl4)2. The use of TlPF6 to generate solvated metal complex cations from chloride salts or chlorido complexes, followed by the addition of nitrosobenzene, is shown to be a useful synthetic strategy for the preparation of azodioxide complex cations with the noncoordinating, diamagnetic PF6 - counteranion. Coordination number appears to be more important than d electron count in determining the geometry and metal-ligand bond distances of diphenylazodioxide complexes.
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Affiliation(s)
- Kylin
A. Emhoff
- Department
of Chemistry, Cleveland State University, 2121 Euclid Avenue, Cleveland, Ohio 44114, United States
| | - Lakshmi Balaraman
- Department
of Chemistry, Cleveland State University, 2121 Euclid Avenue, Cleveland, Ohio 44114, United States
| | - Sydney R. Simpson
- Department
of Chemistry, Cleveland State University, 2121 Euclid Avenue, Cleveland, Ohio 44114, United States
| | - Michael L. Stromyer
- Department
of Chemistry, The University of Akron, 190 East Buchtel Common, Akron, Ohio 44325, United States
| | - Haitham F. Kalil
- Department
of Chemistry, Cleveland State University, 2121 Euclid Avenue, Cleveland, Ohio 44114, United States
- Department
of Chemistry, Suez Canal University, Ismailia 41522, Egypt
| | - James R. Beemiller
- Department
of Chemistry, Cleveland State University, 2121 Euclid Avenue, Cleveland, Ohio 44114, United States
| | - Philipp Sikatzki
- Department
of Chemistry, Cleveland State University, 2121 Euclid Avenue, Cleveland, Ohio 44114, United States
| | - Teya S. Eshelman
- Department
of Chemistry, Cleveland State University, 2121 Euclid Avenue, Cleveland, Ohio 44114, United States
| | - Ahmed M. H. Salem
- Department
of Chemistry, Cleveland State University, 2121 Euclid Avenue, Cleveland, Ohio 44114, United States
| | - Michael A. DeBord
- Department
of Chemistry, The University of Akron, 190 East Buchtel Common, Akron, Ohio 44325, United States
| | - Matthew J. Panzner
- Department
of Chemistry, The University of Akron, 190 East Buchtel Common, Akron, Ohio 44325, United States
| | - Wiley J. Youngs
- Department
of Chemistry, The University of Akron, 190 East Buchtel Common, Akron, Ohio 44325, United States
| | - W. Christopher Boyd
- Department
of Chemistry, Cleveland State University, 2121 Euclid Avenue, Cleveland, Ohio 44114, United States
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DeBord MA, Southerland MR, Wagers PO, Tiemann KM, Robishaw NK, Whiddon KT, Konopka MC, Tessier CA, Shriver LP, Paruchuri S, Hunstad DA, Panzner MJ, Youngs WJ. Synthesis, characterization, in vitro SAR and in vivo evaluation of N,N'bisnaphthylmethyl 2-alkyl substituted imidazolium salts against NSCLC. Bioorg Med Chem Lett 2017; 27:764-775. [PMID: 28126518 PMCID: PMC5575737 DOI: 10.1016/j.bmcl.2017.01.035] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2016] [Revised: 01/11/2017] [Accepted: 01/12/2017] [Indexed: 10/20/2022]
Abstract
Alkyl- and N,N'-bisnaphthyl-substituted imidazolium salts were tested in vitro for their anti-cancer activity against four non-small cell lung cancer cell lines (NCI-H460, NCI-H1975, HCC827, A549). All compounds had potent anticancer activity with 2 having IC50 values in the nanomolar range for three of the four cell lines, a 17-fold increase in activity against NCI-H1975 cells when compared to cisplatin. Compounds 1-4 also showed high anti-cancer activity against nine NSCLC cell lines in the NCI-60 human tumor cell line screen. In vitro studies performed using the Annexin V and JC-1 assays suggested that NCI-H460 cells treated with 2 undergo an apoptotic cell death pathway and that mitochondria could be the cellular target of 2 with the mechanism of action possibly related to a disruption of the mitochondrial membrane potential. The water solubilities of 1-4 was over 4.4mg/mL using 2-hydroxypropyl-β-cyclodextrin as a chemical excipient, thereby providing sufficient solubility for systemic administration.
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Affiliation(s)
- Michael A. DeBord
- Department of Chemistry, University of Akron, Akron, Ohio 44325, United States, USA. Tel: 330-972-5362, Fax: 330-972-6085
| | - Marie R. Southerland
- Department of Chemistry, University of Akron, Akron, Ohio 44325, United States, USA. Tel: 330-972-5362, Fax: 330-972-6085
| | - Patrick O. Wagers
- Department of Chemistry, University of Akron, Akron, Ohio 44325, United States, USA. Tel: 330-972-5362, Fax: 330-972-6085
| | - Kristin M. Tiemann
- Departments of Pediatrics and Molecular Microbiology, Washington University School of Medicine, St. Louis, Missouri 63110, United States
| | - Nikki K. Robishaw
- Department of Chemistry, University of Akron, Akron, Ohio 44325, United States, USA. Tel: 330-972-5362, Fax: 330-972-6085
| | - Kyle T. Whiddon
- Department of Chemistry, University of Akron, Akron, Ohio 44325, United States, USA. Tel: 330-972-5362, Fax: 330-972-6085
| | - Michael C. Konopka
- Department of Chemistry, University of Akron, Akron, Ohio 44325, United States, USA. Tel: 330-972-5362, Fax: 330-972-6085
| | - Claire A. Tessier
- Department of Chemistry, University of Akron, Akron, Ohio 44325, United States, USA. Tel: 330-972-5362, Fax: 330-972-6085
| | - Leah P. Shriver
- Department of Chemistry, University of Akron, Akron, Ohio 44325, United States, USA. Tel: 330-972-5362, Fax: 330-972-6085
- Department of Biology, University of Akron, Akron, Ohio 44325, United States
| | - Sailaja Paruchuri
- Department of Chemistry, University of Akron, Akron, Ohio 44325, United States, USA. Tel: 330-972-5362, Fax: 330-972-6085
| | - David A. Hunstad
- Departments of Pediatrics and Molecular Microbiology, Washington University School of Medicine, St. Louis, Missouri 63110, United States
| | - Matthew J. Panzner
- Department of Chemistry, University of Akron, Akron, Ohio 44325, United States, USA. Tel: 330-972-5362, Fax: 330-972-6085
| | - Wiley J. Youngs
- Department of Chemistry, University of Akron, Akron, Ohio 44325, United States, USA. Tel: 330-972-5362, Fax: 330-972-6085
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DeBord MA, Wagers PO, Crabtree SR, Tessier CA, Panzner MJ, Youngs WJ. Synthesis, characterization, and in vitro SAR evaluation of N,N'-bis(arylmethyl)-C 2-alkyl substituted imidazolium salts. Bioorg Med Chem Lett 2017; 27:196-202. [PMID: 27939175 PMCID: PMC5204360 DOI: 10.1016/j.bmcl.2016.11.075] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2016] [Revised: 11/23/2016] [Accepted: 11/24/2016] [Indexed: 10/20/2022]
Abstract
A series of C2-alkyl substituted N,N'-bis(arylmethyl)imidazolium salts were synthesized, characterized, and tested for their in vitro anti-cancer activity against multiple non-small cell lung cancer cell lines by our group and the National Cancer Institute's-60 human tumor cell line screen to establish a structure-activity relationship. Compounds are related to previously published N,N'-bis(arylmethyl)imidazolium salts but utilize the historical quinoline motif and anion effects to increase the aqueous solubility. Multiple derivatives displayed high anti-cancer activity with IC50 values in the nanomolar to low micromolar range against a panel of non-small cell lung cancer cell lines. Several of these derivatives have high aqueous solubilities with potent anti-proliferative properties and are ideal candidates for future in vivo xenograft studies and have high potential to progress into clinic use.
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Affiliation(s)
- Michael A DeBord
- Department of Chemistry, University of Akron, Akron, OH 44325, United States
| | - Patrick O Wagers
- Department of Chemistry, University of Akron, Akron, OH 44325, United States
| | - Steven R Crabtree
- Department of Chemistry, University of Akron, Akron, OH 44325, United States
| | - Claire A Tessier
- Department of Chemistry, University of Akron, Akron, OH 44325, United States
| | - Matthew J Panzner
- Department of Chemistry, University of Akron, Akron, OH 44325, United States.
| | - Wiley J Youngs
- Department of Chemistry, University of Akron, Akron, OH 44325, United States.
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Shelton KL, DeBord MA, Wagers PO, Southerland MR, Williams TM, Robishaw NK, Shriver LP, Tessier CA, Panzner MJ, Youngs WJ. Synthesis, anti-proliferative activity, SAR study, and preliminary in vivo toxicity study of substituted N,N'-bis(arylmethyl)benzimidazolium salts against a panel of non-small cell lung cancer cell lines. Bioorg Med Chem 2016; 25:421-439. [PMID: 27876249 DOI: 10.1016/j.bmc.2016.11.009] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2016] [Revised: 11/02/2016] [Accepted: 11/03/2016] [Indexed: 11/18/2022]
Abstract
A series of N,N'-bis(arylmethyl)benzimidazolium salts have been synthesized and evaluated for their in vitro anti-cancer activity against select non-small cell lung cancer cell lines to create a structure activity relationship profile. The results indicate that hydrophobic substituents on the salts increase the overall anti-proliferative activity. Our data confirms that naphthylmethyl substituents at the nitrogen atoms (N1(N3)) and highly lipophilic substituents at the carbon atoms (C2 and C5(C6)) can generate benzimidazolium salts with anti-proliferative activity that is comparable to that of cisplatin. The National Cancer Institute's Developmental Therapeutics Program tested 1, 3-5, 10, 11, 13-18, 20-25, and 28-30 in their 60 human tumor cell line screen. Results were supportive of data observed in our lab. Compounds with hydrophobic substituents have higher anti-cancer activity than compounds with hydrophilic substituents.
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Affiliation(s)
- Kerri L Shelton
- Department of Chemistry, The University of Akron, Akron, OH 44325-3601, USA
| | - Michael A DeBord
- Department of Chemistry, The University of Akron, Akron, OH 44325-3601, USA
| | - Patrick O Wagers
- Department of Chemistry, The University of Akron, Akron, OH 44325-3601, USA
| | | | - Travis M Williams
- Department of Chemistry, The University of Akron, Akron, OH 44325-3601, USA
| | - Nikki K Robishaw
- Department of Chemistry, The University of Akron, Akron, OH 44325-3601, USA
| | - Leah P Shriver
- Department of Chemistry, The University of Akron, Akron, OH 44325-3601, USA
| | - Claire A Tessier
- Department of Chemistry, The University of Akron, Akron, OH 44325-3601, USA
| | - Matthew J Panzner
- Department of Chemistry, The University of Akron, Akron, OH 44325-3601, USA
| | - Wiley J Youngs
- Department of Chemistry, The University of Akron, Akron, OH 44325-3601, USA.
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Thome BS, Snyder SR, Beres JM, Wagers PO, Panzner MJ, Wright BD, Youngs WJ, Tessier CA. Chlorine/oxygen transfer reactions of [PCl 2N] 3using oxygenated Lewis bases as a possible route to [PON] 3. PHOSPHORUS SULFUR 2016. [DOI: 10.1080/10426507.2015.1128934] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Affiliation(s)
| | | | - Joanna M. Beres
- Department of Chemistry, University of Akron, Akron, Ohio, USA
| | | | | | - Brian D. Wright
- Department of Chemistry, University of Akron, Akron, Ohio, USA
| | - Wiley J. Youngs
- Department of Chemistry, University of Akron, Akron, Ohio, USA
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11
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Tun ZM, Heston AJ, Panzner MJ, Scionti V, Medvetz DA, Wright BD, Johnson NA, Li L, Wesdemiotis C, Rinaldi PL, Youngs WJ, Tessier CA. Group 13 Superacid Adducts of [PCl2N]3. Inorg Chem 2016; 55:3283-93. [DOI: 10.1021/acs.inorgchem.5b02341] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Zin-Min Tun
- Department of Chemistry, The University of Akron, Akron, Ohio 44325-3601, United States
| | - Amy J. Heston
- Department of Chemistry, The University of Akron, Akron, Ohio 44325-3601, United States
| | - Matthew J. Panzner
- Department of Chemistry, The University of Akron, Akron, Ohio 44325-3601, United States
| | - Vincenzo Scionti
- Department of Chemistry, The University of Akron, Akron, Ohio 44325-3601, United States
| | - Doug A. Medvetz
- Department of Chemistry, The University of Akron, Akron, Ohio 44325-3601, United States
| | - Brian D. Wright
- Department of Chemistry, The University of Akron, Akron, Ohio 44325-3601, United States
| | - Nicholas A. Johnson
- Department of Chemistry, The University of Akron, Akron, Ohio 44325-3601, United States
| | - Linlin Li
- Department of Chemistry, The University of Akron, Akron, Ohio 44325-3601, United States
| | - Chrys Wesdemiotis
- Department of Chemistry, The University of Akron, Akron, Ohio 44325-3601, United States
| | - Peter L. Rinaldi
- Department of Chemistry, The University of Akron, Akron, Ohio 44325-3601, United States
| | - Wiley J. Youngs
- Department of Chemistry, The University of Akron, Akron, Ohio 44325-3601, United States
| | - Claire A. Tessier
- Department of Chemistry, The University of Akron, Akron, Ohio 44325-3601, United States
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12
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Wright BD, Deblock MC, Wagers PO, Duah E, Robishaw NK, Shelton KL, Southerland MR, DeBord MA, Kersten KM, McDonald LJ, Stiel JA, Panzner MJ, Tessier CA, Paruchuri S, Youngs WJ. Anti-tumor activity of lipophilic imidazolium salts on select NSCLC cell lines. Med Chem Res 2015; 24:2838-2861. [PMID: 26446298 PMCID: PMC4593509 DOI: 10.1007/s00044-015-1330-z] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2014] [Accepted: 01/19/2015] [Indexed: 10/23/2022]
Abstract
The anti-tumor activity of imidazolium salts is highly dependent upon the substituents on the nitrogen atoms of the imidazolium cation. We have synthesized and characterized a series of naphthalene-substituted imidazolium salts and tested them against a variety of non-smallcell lung cancer cell lines. Several of these complexes displayed anticancer activity comparable to cisplatin. These compounds induced apoptosis in the NCI-H460 cell line as determined by Annexin V staining, caspase-3, and PARP cleavage. These results strongly suggest that this class of compounds can serve as potent chemotherapeutic agents.
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Affiliation(s)
- Brian D. Wright
- Department of Chemistry, The University of Akron, Akron, OH 44325-3601, USA
| | - Michael C. Deblock
- Department of Chemistry, The University of Akron, Akron, OH 44325-3601, USA
| | - Patrick O. Wagers
- Department of Chemistry, The University of Akron, Akron, OH 44325-3601, USA
| | - Ernest Duah
- Department of Chemistry, The University of Akron, Akron, OH 44325-3601, USA
| | - Nikki K. Robishaw
- Department of Chemistry, The University of Akron, Akron, OH 44325-3601, USA
| | - Kerri L. Shelton
- Department of Chemistry, The University of Akron, Akron, OH 44325-3601, USA
| | | | - Michael A. DeBord
- Department of Chemistry, The University of Akron, Akron, OH 44325-3601, USA
| | - Kortney M. Kersten
- Department of Chemistry, The University of Akron, Akron, OH 44325-3601, USA
| | - Lucas J. McDonald
- Department of Chemistry, The University of Akron, Akron, OH 44325-3601, USA
| | - Jason A. Stiel
- Department of Chemistry, The University of Akron, Akron, OH 44325-3601, USA
| | - Matthew J. Panzner
- Department of Chemistry, The University of Akron, Akron, OH 44325-3601, USA
| | - Claire A. Tessier
- Department of Chemistry, The University of Akron, Akron, OH 44325-3601, USA
| | - Sailaja Paruchuri
- Department of Chemistry, The University of Akron, Akron, OH 44325-3601, USA
| | - Wiley J. Youngs
- Department of Chemistry, The University of Akron, Akron, OH 44325-3601, USA
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13
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Agrahari A, Wagers PO, Schildcrout SM, Masnovi J, Youngs WJ. Crystal structure of 9-methacryloylanthracene. Acta Crystallogr E Crystallogr Commun 2015; 71:357-9. [PMID: 26029389 PMCID: PMC4438842 DOI: 10.1107/s2056989015004090] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/20/2014] [Accepted: 02/26/2015] [Indexed: 11/11/2022]
Abstract
In the title compound, C18H14O, with systematic name 1-(anthracen-9-yl)-2-methyl-prop-2-en-1-one, the ketonic C atom lies 0.2030 (16) Å out of the anthryl-ring-system plane. The dihedral angle between the planes of the anthryl and methacryloyl moieties is 88.30 (3)° and the stereochemistry about the Csp (2)-Csp (2) bond in the side chain is transoid. In the crystal, the end rings of the anthryl units in adjacent mol-ecules associate in parallel-planar orientations [shortest centroid-centroid distance = 3.6320 (7) Å]. A weak hydrogen bond is observed between an aromatic H atom and the O atom of a mol-ecule displaced by translation in the a-axis direction, forming sheets of parallel-planar anthryl groups packing in this direction.
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Affiliation(s)
- Aditya Agrahari
- Department of Chemistry, Cleveland State University, Cleveland OH 44115, USA
| | - Patrick O Wagers
- Department of Chemistry, University of Akron, Akron OH 44325, USA
| | | | - John Masnovi
- Department of Chemistry, Cleveland State University, Cleveland OH 44115, USA
| | - Wiley J Youngs
- Department of Chemistry, University of Akron, Akron OH 44325, USA
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14
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Lim YH, Tiemann KM, Heo GS, Wagers PO, Rezenom YH, Zhang S, Zhang F, Youngs WJ, Hunstad DA, Wooley KL. Preparation and in vitro antimicrobial activity of silver-bearing degradable polymeric nanoparticles of polyphosphoester-block-poly(L-lactide). ACS Nano 2015; 9:1995-2008. [PMID: 25621868 PMCID: PMC4455953 DOI: 10.1021/nn507046h] [Citation(s) in RCA: 59] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/18/2023]
Abstract
The development of well-defined polymeric nanoparticles (NPs) as delivery carriers for antimicrobials targeting human infectious diseases requires rational design of the polymer template, an efficient synthetic approach, and fundamental understanding of the developed NPs, e.g., drug loading/release, particle stability, and other characteristics. Herein, we developed and evaluated the in vitro antimicrobial activity of silver-bearing, fully biodegradable and functional polymeric NPs. A series of degradable polymeric nanoparticles (dNPs), composed of phosphoester and L-lactide and designed specifically for silver loading into the hydrophilic shell and/or the hydrophobic core, were prepared as potential delivery carriers for three different types of silver-based antimicrobials-silver acetate or one of two silver carbene complexes (SCCs). Silver-loading capacities of the dNPs were not influenced by the hydrophilic block chain length, loading site (i.e., core or shell), or type of silver compound, but optimization of the silver feed ratio was crucial to maximize the silver loading capacity of dNPs, up to ca. 12% (w/w). The release kinetics of silver-bearing dNPs revealed 50% release at ca. 2.5-5.5 h depending on the type of silver compound. In addition, we undertook a comprehensive evaluation of the rates of hydrolytic or enzymatic degradability and performed structural characterization of the degradation products. Interestingly, packaging of the SCCs in the dNP-based delivery system improved minimum inhibitory concentrations up to 70%, compared with the SCCs alone, as measured in vitro against 10 contemporary epidemic strains of Staphylococcus aureus and eight uropathogenic strains of Escherichia coli. We conclude that these dNP-based delivery systems may be beneficial for direct epithelial treatment and/or prevention of ubiquitous bacterial infections, including those of the skin and urinary tract.
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Affiliation(s)
- Young H. Lim
- Departments of Chemistry, Chemical Engineering, and Materials Science and Engineering, and Laboratory for Synthetic-Biologic Interactions, Texas A&M University, P.O. Box 30012, 3255 TAMU, College Station, Texas 77842, United States
| | - Kristin M. Tiemann
- Department of Pediatrics, Washington University of School of Medicine, St. Louis, MO 63110, United States
| | - Gyu Seong Heo
- Departments of Chemistry, Chemical Engineering, and Materials Science and Engineering, and Laboratory for Synthetic-Biologic Interactions, Texas A&M University, P.O. Box 30012, 3255 TAMU, College Station, Texas 77842, United States
| | - Patrick O. Wagers
- Department of Chemistry and Center for Silver Therapeutics Research, University of Akron, Akron, OH 44325, United States
| | - Yohannes H. Rezenom
- Laboratory for Biological Mass Spectrometry, Department of Chemistry, Texas A&M University, College Station, Texas 77843, United States
| | - Shiyi Zhang
- Departments of Chemistry, Chemical Engineering, and Materials Science and Engineering, and Laboratory for Synthetic-Biologic Interactions, Texas A&M University, P.O. Box 30012, 3255 TAMU, College Station, Texas 77842, United States
| | - Fuwu Zhang
- Departments of Chemistry, Chemical Engineering, and Materials Science and Engineering, and Laboratory for Synthetic-Biologic Interactions, Texas A&M University, P.O. Box 30012, 3255 TAMU, College Station, Texas 77842, United States
| | - Wiley J. Youngs
- Department of Chemistry and Center for Silver Therapeutics Research, University of Akron, Akron, OH 44325, United States
| | - David A. Hunstad
- Department of Pediatrics, Washington University of School of Medicine, St. Louis, MO 63110, United States
- Department of Molecular Microbiology, Washington University School of Medicine, St. Louis, MO 63110, United States
| | - Karen L. Wooley
- Departments of Chemistry, Chemical Engineering, and Materials Science and Engineering, and Laboratory for Synthetic-Biologic Interactions, Texas A&M University, P.O. Box 30012, 3255 TAMU, College Station, Texas 77842, United States
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15
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Bowers DJ, Wright BD, Scionti V, Schultz A, Panzner MJ, Twum EB, Li LL, Katzenmeyer BC, Thome BS, Rinaldi PL, Wesdemiotis C, Youngs WJ, Tessier CA. Structure and conformation of the medium-sized chlorophosphazene rings. Inorg Chem 2014; 53:8874-86. [PMID: 25111009 DOI: 10.1021/ic500272b] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Medium-sized cyclic oligomeric phosphazenes [PCl2N]m (where m = 5-9) that were prepared from the reaction of PCl5 and NH4Cl in refluxing chlorobenzene have been isolated by a combination of sublimation/extraction and column chromatography from the predominant products [PCl2N]3 and [PCl2N]4. The medium-sized rings [PCl2N]m have been characterized by electrospray ionization-mass spectroscopy (ESI-MS), their (31)P chemical shifts have been reassigned, and their T1 relaxation times have been obtained. Crystallographic data has been recollected for [PCl2N]5, and the crystal structures of [PCl2N]6, and [PCl2N]8 are reported. Halogen-bonding interactions were observed in all the crystal structures of cyclic [PCl2N]m (m = 3-5, 6, 8). The crystal structures of [P(OPh)2N]7 and [P(OPh)2N]8, which are derivatives of the respective [PCl2N]m, are also reported. Comparisons of the intermolecular forces and torsion angles of [PCl2N]8 and [P(OPh)2N]8 with those of three other octameric rings are described. The comparisons show that chlorophosphazenes should not be considered prototypical, in terms of solid-state structure, because of the strong influence of halogen bonding.
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Affiliation(s)
- David J Bowers
- University of Akron , Department of Chemistry, Akron, Ohio 44325-3601, United States
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16
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Shah PN, Lin LY, Smolen JA, Tagaev JA, Gunsten SP, Han DS, Heo GS, Li Y, Zhang F, Zhang S, Wright BD, Panzner MJ, Youngs WJ, Brody SL, Wooley KL, Cannon CL. Synthesis, characterization, and in vivo efficacy of shell cross-linked nanoparticle formulations carrying silver antimicrobials as aerosolized therapeutics. ACS Nano 2013; 7:4977-87. [PMID: 23718195 PMCID: PMC4287418 DOI: 10.1021/nn400322f] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/21/2013] [Accepted: 05/29/2013] [Indexed: 05/25/2023]
Abstract
The use of nebulizable, nanoparticle-based antimicrobial delivery systems can improve efficacy and reduce toxicity for treatment of multi-drug-resistant bacteria in the chronically infected lungs of cystic fibrosis patients. Nanoparticle vehicles are particularly useful for applying broad-spectrum silver-based antimicrobials, for instance, to improve the residence time of small-molecule silver carbene complexes (SCCs) within the lung. Therefore, we have synthesized multifunctional, shell cross-linked knedel-like polymeric nanoparticles (SCK NPs) and capitalized on the ability to independently load the shell and core with silver-based antimicrobial agents. We formulated three silver-loaded variants of SCK NPs: shell-loaded with silver cations, core-loaded with SCC10, and combined loading of shell silver cations and core SCC10. All three formulations provided a sustained delivery of silver over the course of at least 2-4 days. The two SCK NP formulations with SCC10 loaded in the core each exhibited excellent antimicrobial activity and efficacy in vivo in a mouse model of Pseudomonas aeruginosa pneumonia. SCK NPs with shell silver cation-load only, while efficacious in vitro, failed to demonstrate efficacy in vivo. However, a single dose of core SCC10-loaded SCK NPs (0.74 ± 0.16 mg Ag) provided a 28% survival advantage over sham treatment, and administration of two doses (0.88 mg Ag) improved survival to 60%. In contrast, a total of 14.5 mg of Ag(+) delivered over 5 doses at 12 h intervals was necessary to achieve a 60% survival advantage with a free-drug (SCC1) formulation. Thus, SCK NPs show promise for clinical impact by greatly reducing antimicrobial dosage and dosing frequency, which could minimize toxicity and improve patient adherence.
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Affiliation(s)
- Parth N. Shah
- Department of Pediatrics, Division of Pulmonary and Vascular Biology, University of Texas Southwestern Medical Center, Dallas, Texas 75390, United States
| | - Lily Yun Lin
- Departments of Chemistry and Chemical Engineering, Texas A&M University, P.O. Box 30012, College Station, Texas 77842, United States
| | - Justin A. Smolen
- Department of Pediatrics, Division of Pulmonary and Vascular Biology, University of Texas Southwestern Medical Center, Dallas, Texas 75390, United States
| | - Jasur A. Tagaev
- Department of Pediatrics, Division of Pulmonary and Vascular Biology, University of Texas Southwestern Medical Center, Dallas, Texas 75390, United States
| | - Sean P. Gunsten
- Department of Internal Medicine, Division of Pulmonary and Critical Care Medicine, Washington University School of Medicine, St. Louis, Missouri 63110, United States
| | - Daniel S. Han
- Department of Pediatrics, Division of Allergy, Immunology, and Pulmonary Medicine, Washington University School of Medicine, St. Louis, Missouri 63110, United States
| | - Gyu Seong Heo
- Departments of Chemistry and Chemical Engineering, Texas A&M University, P.O. Box 30012, College Station, Texas 77842, United States
| | | | - Fuwu Zhang
- Departments of Chemistry and Chemical Engineering, Texas A&M University, P.O. Box 30012, College Station, Texas 77842, United States
| | - Shiyi Zhang
- Departments of Chemistry and Chemical Engineering, Texas A&M University, P.O. Box 30012, College Station, Texas 77842, United States
| | - Brian D. Wright
- Center for Silver Therapeutics Research, Department of Chemistry, The University of Akron, Akron, Ohio 44325-3601, United States
| | - Matthew J. Panzner
- Center for Silver Therapeutics Research, Department of Chemistry, The University of Akron, Akron, Ohio 44325-3601, United States
| | - Wiley J. Youngs
- Center for Silver Therapeutics Research, Department of Chemistry, The University of Akron, Akron, Ohio 44325-3601, United States
| | - Steven L. Brody
- Department of Internal Medicine, Division of Pulmonary and Critical Care Medicine, Washington University School of Medicine, St. Louis, Missouri 63110, United States
| | - Karen L. Wooley
- Departments of Chemistry and Chemical Engineering, Texas A&M University, P.O. Box 30012, College Station, Texas 77842, United States
| | - Carolyn L. Cannon
- Department of Pediatrics, Division of Pulmonary and Vascular Biology, University of Texas Southwestern Medical Center, Dallas, Texas 75390, United States
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17
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Aweda TA, Ikotun O, Mastren T, Cannon CL, Wright B, Youngs WJ, Cutler C, Guthrie J, Lapi SE. The use of 111Ag as a tool for studying biological distribution of silver-based antimicrobials. Medchemcomm 2013; 4:1015-1017. [PMID: 23930200 PMCID: PMC3733397 DOI: 10.1039/c3md00082f] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Recently, there has been an emergence of significant interest in silver-based antimicrobials. Our goal was to develop a radioactive tracer for investigating the biological fate of such compounds. Purified 111Ag was incorporated into the methylated caffeine analogue, IC1 to yield the silver carbene complex designated as [111Ag]SCC1 and investigated in biodistribution studies.
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Affiliation(s)
- Tolulope A. Aweda
- Mallinckrodt Institute of Radiology, Washington University School of Medicine in St. Louis, 510 S. Kingshighway Blvd, St. Louis, MO 63110. Fax: 314-362-9940; Tel: 314-362-0284; Tel: 314-367-5537; Tel: 314-362-8154
| | - Oluwatayo Ikotun
- Mallinckrodt Institute of Radiology, Washington University School of Medicine in St. Louis, 510 S. Kingshighway Blvd, St. Louis, MO 63110. Fax: 314-362-9940; Tel: 314-362-0284; Tel: 314-367-5537; Tel: 314-362-8154
| | - Tara Mastren
- Mallinckrodt Institute of Radiology, Washington University School of Medicine in St. Louis, 510 S. Kingshighway Blvd, St. Louis, MO 63110. Fax: 314-362-9940; Tel: 314-362-0284; Tel: 314-367-5537; Tel: 314-362-8154
| | - Carolyn L. Cannon
- Department of Pediatrics, University of Texas Southwestern Medical Center, 5323 Harry Hines Blvd, Dallas, TX 75390-9063, USA. Fax: 214-456-5406; Tel: 214-648-8709
| | - Brian Wright
- Department of Chemistry, University of Akron , Akron, OH 44325-3601
| | - Wiley J. Youngs
- Department of Chemistry, University of Akron , Akron, OH 44325-3601
| | - Cathy Cutler
- University of Missouri, Research Reactor Center, 1513 Research Park Drive, Columbia, MO 65211 FAX 573-882-5211, Tel:573-882-6360
| | - James Guthrie
- University of Missouri, Research Reactor Center, 1513 Research Park Drive, Columbia, MO 65211 FAX 573-882-5211, Tel:573-882-6360
| | - Suzanne E. Lapi
- Mallinckrodt Institute of Radiology, Washington University School of Medicine in St. Louis, 510 S. Kingshighway Blvd, St. Louis, MO 63110. Fax: 314-362-9940; Tel: 314-362-0284; Tel: 314-367-5537; Tel: 314-362-8154
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18
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Stine AE, Nassar D, Miller JK, Clemons CB, Wilber JP, Young GW, Yun YH, Cannon CL, Leid JG, Youngs WJ, Milsted A. Modeling the response of a biofilm to silver-based antimicrobial. Math Biosci 2013; 244:29-39. [PMID: 23628237 DOI: 10.1016/j.mbs.2013.04.006] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2012] [Revised: 04/11/2013] [Accepted: 04/12/2013] [Indexed: 01/21/2023]
Abstract
Biofilms are found within the lungs of patients with chronic pulmonary infections, in particular patients with cystic fibrosis, and are the major cause of morbidity and mortality for these patients. The work presented here is part of a large interdisciplinary effort to develop an effective drug delivery system and treatment strategy to kill biofilms growing in the lung. The treatment strategy exploits silver-based antimicrobials, in particular, silver carbene complexes (SCC). This manuscript presents a mathematical model describing the growth of a biofilm and predicts the response of a biofilm to several basic treatment strategies. The continuum model is composed of a set of reaction-diffusion equations for the transport of soluble components (nutrient and antimicrobial), coupled to a set of reaction-advection equations for the particulate components (living, inert, and persister bacteria, extracellular polymeric substance, and void). We explore the efficacy of delivering SCC both in an aqueous solution and in biodegradable polymer nanoparticles. Minimum bactericidal concentration (MBC) levels of antimicrobial in both free and nanoparticle-encapsulated forms are estimated. Antimicrobial treatment demonstrates a biphasic killing phenomenon, where the active bacterial population is killed quickly followed by a slower killing rate, which indicates the presence of a persister population. Finally, our results suggest that a biofilm with a ready supply of nutrient throughout its depth has fewer persister bacteria and hence may be easier to treat than one with less nutrient.
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Affiliation(s)
- A E Stine
- The University of Akron, Department of Mathematics, Akron, OH 44325-4002, USA
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19
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Miller JK, Brantner JS, Clemons C, Kreider KL, Milsted A, Wilber P, Yun YH, Youngs WJ, Young G, Badawy HT, Milsted A, Clemons C, Kreider KL, Wilber P, Young G, Yun YH, Wagers PO, Youngs WJ. Mathematical modelling of Pseudomonas aeruginosa biofilm growth and treatment in the cystic fibrosis lung. Math Med Biol 2013; 31:179-204. [PMID: 23518337 DOI: 10.1093/imammb/dqt003] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
Lung failure due to chronic bacterial infection is the leading cause of death for patients with cystic fibrosis (CF). It is thought that the chronic nature of these infections is, in part, due to the increased tolerance and recalcitrant behaviour of bacteria growing as biofilms. Inhalation of silver carbene complex (SCC) antimicrobial, either encased in polymeric biodegradable particles or in aqueous form, has been proposed as a treatment. Through a coordinated experimental and mathematical modelling effort, we examine this proposed treatment of lung biofilms. Pseudomonas aeruginosa biofilms grown in a flow-cell apparatus irrigated with an artificial CF sputum medium are analysed as an in vitro model of CF lung infection. A 2D mathematical model of biofilm growth within the flow-cell is developed. Numerical simulations demonstrate that SCC inactivation by the environment is critical in aqueous SCC, but not SCC-polymer, based treatments. Polymer particle degradation rate is shown to be an important parameter that can be chosen optimally, based on environmental conditions and bacterial susceptibility.
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Affiliation(s)
- J K Miller
- Integrated Bioscience, University of Akron, Akron, OH, USA
| | | | - Curtis Clemons
- Integrated Bioscience, University of Akron, Akron, OH, USA
| | - K L Kreider
- Integrated Bioscience, University of Akron, Akron, OH, USA
| | - Amy Milsted
- Integrated Bioscience, University of Akron, Akron, OH, USA
| | - Pat Wilber
- Integrated Bioscience, University of Akron, Akron, OH, USA
| | - Yang H Yun
- Integrated Bioscience, University of Akron, Akron, OH, USA
| | - Wiley J Youngs
- Integrated Bioscience, University of Akron, Akron, OH, USA
| | - Gerald Young
- Integrated Bioscience, University of Akron, Akron, OH, USA
| | - Hope T Badawy
- Department of Biology, University of Akron, Akron, OH, USA
| | - Amy Milsted
- Department of Biology, University of Akron, Akron, OH, USA
| | - Curtis Clemons
- Department of Mathematics, University of Akron, Akron, OH, USA
| | - K L Kreider
- Department of Mathematics, University of Akron, Akron, OH, USA
| | - Pat Wilber
- Department of Mathematics, University of Akron, Akron, OH, USA
| | - Gerald Young
- Department of Mathematics, University of Akron, Akron, OH, USA
| | - Yang H Yun
- Department of Biomedical Engineering, University of Akron, Akron, OH, USA
| | | | - Wiley J Youngs
- Department of Chemistry, University of Akron, Akron, OH, USA
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20
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Ornelas-Megiatto C, Shah PN, Wich PR, Cohen JL, Tagaev JA, Smolen JA, Wright BD, Panzner MJ, Youngs WJ, Fréchet JMJ, Cannon CL. Aerosolized antimicrobial agents based on degradable dextran nanoparticles loaded with silver carbene complexes. Mol Pharm 2012; 9:3012-22. [PMID: 23025592 PMCID: PMC3579655 DOI: 10.1021/mp3004379] [Citation(s) in RCA: 44] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Abstract
Degradable acetalated dextran (Ac-DEX) nanoparticles were prepared and loaded with a hydrophobic silver carbene complex (SCC) by a single-emulsion process. The resulting particles were characterized for morphology and size distribution using scanning electron microscopy (SEM), transmission electron microscopy (TEM), and dynamic light scattering (DLS). The average particle size and particle size distribution were found to be a function of the ratio of the organic phase to the surfactant containing aqueous phase with a 1:5 volume ratio of Ac-DEX CH(2)Cl(2) (organic):PBS (aqueous) being optimal for the formulation of nanoparticles with an average size of 100 ± 40 nm and a low polydispersity. The SCC loading was found to increase with an increase in the SCC quantity in the initial feed used during particle formulation up to 30% (w/w); however, the encapsulation efficiency was observed to be the best at a feed ratio of 20% (w/w). In vitro efficacy testing of the SCC loaded Ac-DEX nanoparticles demonstrated their activity against both Gram-negative and Gram-positive bacteria; the nanoparticles inhibited the growth of every bacterial species tested. As expected, a higher concentration of drug was required to inhibit bacterial growth when the drug was encapsulated within the nanoparticle formulations compared with the free drug illustrating the desired depot release. Compared with free drug, the Ac-DEX nanoparticles were much more readily suspended in an aqueous phase and subsequently aerosolized, thus providing an effective method of pulmonary drug delivery.
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Affiliation(s)
| | - Parth N. Shah
- Division of Pulmonary and Vascular Biology, Department of Pediatrics, UT Southwestern Medical Center, Dallas, Texas 75390-9063, USA
| | - Peter R. Wich
- College of Chemistry, University of California, Berkeley, California 94720-1460, USA
| | - Jessica L. Cohen
- College of Chemistry, University of California, Berkeley, California 94720-1460, USA
| | - Jasur A. Tagaev
- Division of Pulmonary and Vascular Biology, Department of Pediatrics, UT Southwestern Medical Center, Dallas, Texas 75390-9063, USA
| | - Justin A. Smolen
- Division of Pulmonary and Vascular Biology, Department of Pediatrics, UT Southwestern Medical Center, Dallas, Texas 75390-9063, USA
| | - Brian D. Wright
- Department of Chemistry, University of Akron, Akron, Ohio 44325-0002, USA
| | - Matthew J. Panzner
- Department of Chemistry, University of Akron, Akron, Ohio 44325-0002, USA
| | - Wiley J. Youngs
- Department of Chemistry, University of Akron, Akron, Ohio 44325-0002, USA
| | - Jean M. J. Fréchet
- College of Chemistry, University of California, Berkeley, California 94720-1460, USA
- King Abdullah University of Science and Technology, Thuwal, 23955-6900, Saudi Arabia
| | - Carolyn L. Cannon
- Division of Pulmonary and Vascular Biology, Department of Pediatrics, UT Southwestern Medical Center, Dallas, Texas 75390-9063, USA
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21
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Walker TL, Malasi W, Bhide S, Parker T, Zhang D, Freedman A, Modarelli JM, Engle JT, Ziegler CJ, Custer P, Youngs WJ, Taschner MJ. Synthesis and characterization of 1,8-dithia-4,11-diazacyclotetradecane. Tetrahedron Lett 2012. [DOI: 10.1016/j.tetlet.2012.09.088] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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22
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Ditto AJ, Shah KN, Robishaw NK, Panzner MJ, Youngs WJ, Yun YH. The Interactions between L-tyrosine based nanoparticles decorated with folic acid and cervical cancer cells under physiological flow. Mol Pharm 2012; 9:3089-98. [PMID: 22957928 DOI: 10.1021/mp300221f] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Many anticancer drugs have been established clinically, but their efficacy can be compromised by nonspecific toxicity and an inability to reach the desired cancerous intracellular spaces. In order to address these issues, researchers have explored the use of folic acid as a targeted moiety to increase specificity of chemotherapeutic drugs. To expand upon such research, we have conjugated folic acid to functionalized poly(ethylene glycol) and subsequently decorated the surface of l-tyrosine polyphosphate (LTP) nanoparticles. These nanoparticles possess the appropriate size (100-500 nm) for internalization as shown by scanning electron microscopy and dynamic light scattering. Under simulated physiological flow, LTP nanoparticles decorated with folic acid (targeted nanoparticles) show a 10-fold greater attachment to HeLa, a cervical cancer cell line, compared to control nanoparticles and to human dermal fibroblasts. The attachment of these targeted nanoparticles progresses at a linear rate, and the strength of this nanoparticle attachment is shown to withstand shear stresses of 3.0 dyn/cm(2). These interactions of the targeted nanoparticles to HeLa are likely a result of a receptor-ligand binding, as a competition study with free folic acid inhibits the nanoparticle attachment. Finally, the targeted nanoparticles encapsulated with a silver based drug show increased efficacy in comparison to nondecorated (plain) nanoparticles and drug alone against HeLa cells. Thus, targeted nanoparticles are a promising delivery platform for developing anticancer therapies that overexpress the folate receptors (FRs).
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Affiliation(s)
- Andrew J Ditto
- Department of Biomedical Engineering, The University of Akron, Olson Research Center, Akron, Ohio 44325-0302, United States
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23
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Wright BD, Shah PN, McDonald LJ, Shaeffer ML, Wagers PO, Panzner MJ, Smolen J, Tagaev J, Tessier CA, Cannon CL, Youngs WJ. Synthesis, characterization, and antimicrobial activity of silver carbene complexes derived from 4,5,6,7-tetrachlorobenzimidazole against antibiotic resistant bacteria. Dalton Trans 2012; 41:6500-6. [PMID: 22402409 PMCID: PMC3703457 DOI: 10.1039/c2dt00055e] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Silver N-heterocyclic carbene complexes have been shown to have great potential as antimicrobial agents, affecting a wide spectrum of both Gram-positive and Gram-negative bacteria. A new series of three silver carbene complexes (SCCs) based on 4,5,6,7-tetrachlorobenzimidazole has been synthesized, characterized, and tested against a panel of clinical strains of bacteria. The imidazolium salts and their precursors were characterized by elemental analysis, mass spectrometry, (1)H and (13)C NMR spectroscopy, and single crystal X-ray diffraction. The silver carbene complexes, SCC32, SCC33, and SCC34 were characterized by elemental analysis, (1)H and (13)C NMR spectroscopy, and single crystal X-ray diffraction. These complexes proved highly efficacious with minimum inhibitory concentrations (MICs) ranging from 0.25 to 6 μg mL(-1). Overall, the complexes were effective against highly resistant bacteria strains, such as methicillin-resistant Staphylococcus aureus (MRSA), weaponizable bacteria, such as Yersinia pestis, and pathogens found within the lungs of cystic fibrosis patients, such as Pseudomonas aeruginosa, Alcaligenes xylosoxidans, and Burkholderia gladioli. SCC33 and SCC34 also showed clinically relevant activity against a silver-resistant strain of Escherichia coli based on MIC testing.
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Affiliation(s)
- Brian D. Wright
- Center for Silver Therapeutics Research, Department of Chemistry, The University of Akron, Akron, OH 44325-3601, USA. Fax: +330-972-6085; Tel: +330-972-5362
| | - Parth N. Shah
- Division of Pulmonary & Vascular Biology, Department of Pediatrics, University of Texas Southwestern Medical Center at Dallas, Dallas, TX 75390-9063, USA. Fax: +214-648-2096; Tel: +214-648-8709
| | - Lucas J. McDonald
- Center for Silver Therapeutics Research, Department of Chemistry, The University of Akron, Akron, OH 44325-3601, USA. Fax: +330-972-6085; Tel: +330-972-5362
| | - Michael L. Shaeffer
- Center for Silver Therapeutics Research, Department of Chemistry, The University of Akron, Akron, OH 44325-3601, USA. Fax: +330-972-6085; Tel: +330-972-5362
| | - Patrick O. Wagers
- Center for Silver Therapeutics Research, Department of Chemistry, The University of Akron, Akron, OH 44325-3601, USA. Fax: +330-972-6085; Tel: +330-972-5362
| | - Matthew J. Panzner
- Center for Silver Therapeutics Research, Department of Chemistry, The University of Akron, Akron, OH 44325-3601, USA. Fax: +330-972-6085; Tel: +330-972-5362
| | - Justin Smolen
- Division of Pulmonary & Vascular Biology, Department of Pediatrics, University of Texas Southwestern Medical Center at Dallas, Dallas, TX 75390-9063, USA. Fax: +214-648-2096; Tel: +214-648-8709
| | - Jasur Tagaev
- Division of Pulmonary & Vascular Biology, Department of Pediatrics, University of Texas Southwestern Medical Center at Dallas, Dallas, TX 75390-9063, USA. Fax: +214-648-2096; Tel: +214-648-8709
| | - Claire A. Tessier
- Center for Silver Therapeutics Research, Department of Chemistry, The University of Akron, Akron, OH 44325-3601, USA. Fax: +330-972-6085; Tel: +330-972-5362
| | - Carolyn L. Cannon
- Division of Pulmonary & Vascular Biology, Department of Pediatrics, University of Texas Southwestern Medical Center at Dallas, Dallas, TX 75390-9063, USA. Fax: +214-648-2096; Tel: +214-648-8709
| | - Wiley J. Youngs
- Center for Silver Therapeutics Research, Department of Chemistry, The University of Akron, Akron, OH 44325-3601, USA. Fax: +330-972-6085; Tel: +330-972-5362
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24
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Garner P, Weerasinghe L, Youngs WJ, Wright B, Wilson D, Jacobs D. [C+NC+CC] Coupling-Enabled Synthesis of Influenza Neuramidase Inhibitor A-315675. Org Lett 2012; 14:1326-9. [DOI: 10.1021/ol3002128] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Philip Garner
- Department of Chemistry, Washington State University, Pullman, Washington 99164-4630, United States, Department of Chemistry, University of Akron, Akron, Ohio 44325, United States, and Vertex Pharmaceuticals Inc., Cambridge, Massachusetts 02139, United States
| | - Laksiri Weerasinghe
- Department of Chemistry, Washington State University, Pullman, Washington 99164-4630, United States, Department of Chemistry, University of Akron, Akron, Ohio 44325, United States, and Vertex Pharmaceuticals Inc., Cambridge, Massachusetts 02139, United States
| | - Wiley J. Youngs
- Department of Chemistry, Washington State University, Pullman, Washington 99164-4630, United States, Department of Chemistry, University of Akron, Akron, Ohio 44325, United States, and Vertex Pharmaceuticals Inc., Cambridge, Massachusetts 02139, United States
| | - Brian Wright
- Department of Chemistry, Washington State University, Pullman, Washington 99164-4630, United States, Department of Chemistry, University of Akron, Akron, Ohio 44325, United States, and Vertex Pharmaceuticals Inc., Cambridge, Massachusetts 02139, United States
| | - Dean Wilson
- Department of Chemistry, Washington State University, Pullman, Washington 99164-4630, United States, Department of Chemistry, University of Akron, Akron, Ohio 44325, United States, and Vertex Pharmaceuticals Inc., Cambridge, Massachusetts 02139, United States
| | - Dylan Jacobs
- Department of Chemistry, Washington State University, Pullman, Washington 99164-4630, United States, Department of Chemistry, University of Akron, Akron, Ohio 44325, United States, and Vertex Pharmaceuticals Inc., Cambridge, Massachusetts 02139, United States
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25
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Youngs WJ, Knapp AR, Wagers PO, Tessier CA. Nanoparticle encapsulated silvercarbene complexes and their antimicrobial and anticancer properties: A perspective. Dalton Trans 2012; 41:327-36. [DOI: 10.1039/c1dt11100k] [Citation(s) in RCA: 84] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
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26
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Panzner MJ, Bilinovich SM, Youngs WJ, Leeper TC. Silver metallation of hen egg white lysozyme: X-ray crystal structure and NMR studies. Chem Commun (Camb) 2011; 47:12479-81. [PMID: 22042312 DOI: 10.1039/c1cc15908a] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The X-ray crystal structure, NMR binding studies, and enzyme activity of silver(I) metallated hen egg white lysozyme are presented. Primary bonding of silver is observed through His15 with secondary bonding interactions coming from nearby Arg14 and Asp87. A covalently bound nitrate completes a four coordinate binding pocket.
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Affiliation(s)
- Matthew J Panzner
- Center for Silver Therapeutics Research, Department of Chemistry, The University of Akron, Akron, OH 44325-3601, USA
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27
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Leid JG, Ditto AJ, Knapp A, Shah PN, Wright BD, Blust R, Christensen L, Clemons CB, Wilber JP, Young GW, Kang AG, Panzner MJ, Cannon CL, Yun YH, Youngs WJ, Seckinger NM, Cope EK. In vitro antimicrobial studies of silver carbene complexes: activity of free and nanoparticle carbene formulations against clinical isolates of pathogenic bacteria. J Antimicrob Chemother 2011; 67:138-48. [PMID: 21972270 DOI: 10.1093/jac/dkr408] [Citation(s) in RCA: 90] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023] Open
Abstract
OBJECTIVES Silver carbenes may represent novel, broad-spectrum antimicrobial agents that have low toxicity while providing varying chemistry for targeted applications. Here, the bactericidal activity of four silver carbene complexes (SCCs) with different formulations, including nanoparticles (NPs) and micelles, was tested against a panel of clinical strains of bacteria and fungi that are the causative agents of many skin and soft tissue, respiratory, wound, blood, and nosocomial infections. METHODS MIC, MBC and multidose experiments were conducted against a broad range of bacteria and fungi. Time-release and cytotoxicity studies of the compounds were also carried out. Free SCCs and SCC NPs were tested against a panel of medically important pathogens, including methicillin-resistant Staphylococcus aureus (MRSA), multidrug-resistant Acinetobacter baumannii (MRAB), Pseudomonas aeruginosa, Burkholderia cepacia and Klebsiella pneumoniae. RESULTS All four SCCs demonstrated strong efficacy in concentration ranges of 0.5-90 mg/L. Clinical bacterial isolates with high inherent resistance to purified compounds were more effectively treated either with an NP formulation of these compounds or by repeated dosing. Overall, the compounds were active against highly resistant bacterial strains, such as MRSA and MRAB, and were active against the biodefence pathogens Bacillus anthracis and Yersinia pestis. All of the medically important bacterial strains tested play a role in many different infectious diseases. CONCLUSIONS The four SCCs described here, including their development as NP therapies, show great promise for treating a wide variety of bacterial and fungal pathogens that are not easily killed by routine antimicrobial agents.
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Affiliation(s)
- Jeff G Leid
- Department of Biological Sciences, Northern Arizona University, PO Box 5640, Building 21, Flagstaff, AZ 86011, USA.
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28
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Tun ZM, Heston AJ, Panzner MJ, Medvetz DA, Wright BD, Savant D, Dudipala VR, Banerjee D, Rinaldi PL, Youngs WJ, Tessier CA. Group 13 Lewis Acid Adducts of [PCl2N]3. Inorg Chem 2011; 50:8937-45. [DOI: 10.1021/ic201075z] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Zin-Min Tun
- Department of Chemistry, The University of Akron, Ohio 44325-3601, United States
| | - Amy J. Heston
- Department of Chemistry, The University of Akron, Ohio 44325-3601, United States
- Division of Mathematics and Sciences, Walsh University, North Canton, Ohio 44720-3336, United States
| | - Matthew J. Panzner
- Department of Chemistry, The University of Akron, Ohio 44325-3601, United States
| | - Doug A. Medvetz
- Department of Chemistry, The University of Akron, Ohio 44325-3601, United States
| | - Brian D. Wright
- Department of Chemistry, The University of Akron, Ohio 44325-3601, United States
| | - Deepa Savant
- Department of Chemistry, The University of Akron, Ohio 44325-3601, United States
| | - Venkat R. Dudipala
- Department of Chemistry, The University of Akron, Ohio 44325-3601, United States
| | - Debasish Banerjee
- Department of Chemistry, The University of Akron, Ohio 44325-3601, United States
| | - Peter L. Rinaldi
- Department of Chemistry, The University of Akron, Ohio 44325-3601, United States
| | - Wiley J. Youngs
- Department of Chemistry, The University of Akron, Ohio 44325-3601, United States
| | - Claire A. Tessier
- Department of Chemistry, The University of Akron, Ohio 44325-3601, United States
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29
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Bilinovich SM, Panzner MJ, Youngs WJ, Leeper TC. Poly[[{μ(3)-2-[4-(2-hy-droxy-eth-yl)piperazin-1-yl]ethane-sulfonato}-silver(I)] trihydrate]. Acta Crystallogr Sect E Struct Rep Online 2011; 67:m1178-9. [PMID: 22058835 PMCID: PMC3200587 DOI: 10.1107/s160053681103008x] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2011] [Accepted: 07/25/2011] [Indexed: 11/27/2022]
Abstract
Ethanesulfonic acid-based buffers like 2-[4-(2-hydroxyethyl)piperazin-1-yl]ethanesulfonic acid (HEPES) are commonly used in biological experiments because of their ability to act as non-coordinating ligands towards metal ions. However, recent work has shown that some of these buffers may in fact coordinate metal ions. The title complex, {[Ag(C8H17N2O4S)]·3H2O}n, is a metal–organic framework formed from HEPES and a silver(I) ion. In this polymeric complex, each Ag atom is primarily coordinated by two N atoms in a distorted linear geometry. Weaker secondary bonding interactions from the hydroxy and sulfate O atoms of HEPES complete a distorted seesaw geometry. The crystal structure is stabilized by O—H⋯O hydrogen-bonding interactions.
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30
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Knapp AR, Panzner MJ, Medvetz DA, Wright BD, Tessier CA, Youngs WJ. Synthesis and antimicrobial studies of silver N-heterocyclic carbene complexes bearing a methyl benzoate substituent. Inorganica Chim Acta 2010; 364:125-131. [PMID: 21218156 PMCID: PMC3014616 DOI: 10.1016/j.ica.2010.08.008] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Abstract
Due to the properties of silver as an antimicrobial, our research group has synthesized many different silver carbene complexes. Two new silver N-heterocyclic carbene complexes derived from 4,5-dichloroimidazole and theobromine bearing methyl benzoate substituents were synthesized by in situ carbene formation using silver acetate as the base in the reaction. The new compounds were fully characterized by several methods including NMR spectroscopy and X-ray crystallography. Preliminary antimicrobial efficacy studies against Pseudomonas aeruginosa, Staphylococcus aureus, and Escherichia coli were conducted. The results of this study demonstrated antimicrobial efficacy of the two complexes comparable to silver nitrate, showing their potential for use in the treatment of bacterial infections.
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31
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Affiliation(s)
- Zin-Min Tun
- Department of Chemistry, University of Akron, Akron, Ohio 44325-3601, United States
| | - Matthew J. Panzner
- Department of Chemistry, University of Akron, Akron, Ohio 44325-3601, United States
| | - Vincenzo Scionti
- Department of Chemistry, University of Akron, Akron, Ohio 44325-3601, United States
| | - Douglas Medvetz
- Department of Chemistry, University of Akron, Akron, Ohio 44325-3601, United States
| | - Chrys Wesdemiotis
- Department of Chemistry, University of Akron, Akron, Ohio 44325-3601, United States
| | - Wiley J. Youngs
- Department of Chemistry, University of Akron, Akron, Ohio 44325-3601, United States
| | - Claire Tessier
- Department of Chemistry, University of Akron, Akron, Ohio 44325-3601, United States
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32
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33
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Xu Y, Panzner MJ, Li X, Youngs WJ, Pang Y. Host–guest assembly of squaraine dye in cucurbit[8]uril: its implication in fluorescent probe for mercury ions. Chem Commun (Camb) 2010; 46:4073-5. [DOI: 10.1039/c002219p] [Citation(s) in RCA: 53] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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34
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Ibricevic A, Brody SL, Youngs WJ, Cannon CL. ATP7B detoxifies silver in ciliated airway epithelial cells. Toxicol Appl Pharmacol 2009; 243:315-22. [PMID: 20005242 DOI: 10.1016/j.taap.2009.11.023] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2009] [Revised: 11/20/2009] [Accepted: 11/26/2009] [Indexed: 12/26/2022]
Abstract
Silver is a centuries-old antibiotic agent currently used to treat infected burns. The sensitivity of a wide range of drug-resistant microorganisms to silver killing suggests that it may be useful for treating refractory lung infections. Toward this goal, we previously developed a methylated caffeine silver acetate compound, SCC1, that exhibits broad-spectrum antimicrobial activity against clinical strains of bacteria in vitro and when nebulized to lungs in mouse infection models. Preclinical testing of high concentrations of SCC1 in primary culture mouse tracheal epithelial cells (mTEC) showed selective ciliated cell death. Ciliated cell death was induced by both silver- and copper-containing compounds but not by the methylated caffeine portion of SCC1. We hypothesized that copper transporting P-type ATPases, ATP7A and ATP7B, play a role in silver detoxification in the airway. In mTEC, ATP7A was expressed in non-ciliated cells, whereas ATP7B was expressed only in ciliated cells. The exposure of mTEC to SCC1 induced the trafficking of ATP7B, but not ATP7A, suggesting the presence of a cell-specific silver uptake and detoxification mechanisms. Indeed, the expression of the copper uptake protein CTR1 was also restricted to ciliated cells. A role of ATP7B in silver detoxification was further substantiated when treatment of SCC1 significantly increased cell death in ATP7B shRNA-treated HepG2 cells. In addition, mTEC from ATP7B(-/-) mice showed enhanced loss of ciliated cells compared to wild type. These studies are the first to demonstrate a cell type-specific expression of the Ag+/Cu+ transporters ATP7A, ATP7B, and CTR1 in airway epithelial cells and a role for ATP7B in detoxification of these metals in the lung.
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Affiliation(s)
- Aida Ibricevic
- Department of Medicine, Washington University School of Medicine, St. Louis, MO 63110, USA
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35
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Li Y, Hindi K, Watts KM, Taylor JB, Zhang K, Li Z, Hunstad DA, Cannon CL, Youngs WJ, Wooley KL. Shell crosslinked nanoparticles carrying silver antimicrobials as therapeutics. Chem Commun (Camb) 2009; 46:121-3. [PMID: 20024313 DOI: 10.1039/b916559b] [Citation(s) in RCA: 47] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Amphiphilic polymer nanoparticles loaded with silver cations or/and N-heterocyclic carbene-silver complexes were assessed as antimicrobial agents against Gram-negative pathogens Escherichia coli and Pseudomonas aeruginosa.
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Affiliation(s)
- Yali Li
- Department of Chemistry and Radiology, Washington University, St Louis, MO 63130-4899, USA
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36
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Panzner MJ, Hindi KM, Wright BD, Taylor JB, Han DS, Youngs WJ, Cannon CL. A theobromine derived silver N-heterocyclic carbene: synthesis, characterization, and antimicrobial efficacy studies on cystic fibrosis relevant pathogens. Dalton Trans 2009:7308-13. [PMID: 20449175 DOI: 10.1039/b907726j] [Citation(s) in RCA: 63] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The increasing incidence of multidrug-resistant (MDR) pulmonary infections in the cystic fibrosis (CF) population has prompted the investigation of innovative silver based therapeutics. The functionalization of the naturally occurring xanthine theobromine at the N(1) nitrogen atom with an ethanol substituent followed by the methylation of the N(9) nitrogen atom gives the N-heterocyclic carbene precursor 1-(2-hydroxyethyl)-3,7,9-trimethylxanthinium iodide. The reaction of this xanthinium salt with silver acetate produces the highly hydrophilic silver carbene complex SCC8. The in vitro antimicrobial efficacy of this newly synthesized complex was evaluated with excellent results on a variety of virulent and MDR pathogens isolated from CF patients. A comparative in vivo study between the known caffeine derived silver carbene SCC1 and SCC8 demonstrated the ability of both complexes to improve the survival rates of mice in a pneumonia model utilizing the clinically isolated infectious strain of Pseudomonas aeruginosa PA M57-15.
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Affiliation(s)
- Matthew J Panzner
- Department of Chemistry, The University of Akron, Akron, OH 44325-3601, USA
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37
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Affiliation(s)
- Khadijah M. Hindi
- Department of Chemistry, The University of Akron, Akron, OH, 44325-3601
| | | | - Claire A. Tessier
- Department of Chemistry, The University of Akron, Akron, OH, 44325-3601
| | - Carolyn L. Cannon
- Department of Chemistry, The University of Akron, Akron, OH, 44325-3601
| | - Wiley J. Youngs
- Department of Chemistry, The University of Akron, Akron, OH, 44325-3601
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38
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Panzner MJ, Deeraksa A, Smith A, Wright BD, Hindi KM, Kascatan-Nebioglu A, Torres AG, Judy BM, Hovis CE, Hilliard JK, Mallett RJ, Cope E, Estes DM, Cannon CL, Leid JG, Youngs WJ. Synthesis and in vitro Efficacy Studies of Silver Carbene Complexes on Biosafety Level 3 Bacteria. Eur J Inorg Chem 2009; 2009:1739-1745. [PMID: 20160993 DOI: 10.1002/ejic.200801159] [Citation(s) in RCA: 58] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
A series of N-heterocyclic carbene silver complexes have been synthesized and tested against the select group of bio-safety level 3 bacteria Burkholderia pseudomallei, Burkholderia mallei, Bacillus anthracis, methicillin-resistant Staphylococcus aureus and Yersinia pestis. Minimal inhibitory concentrations, minimal bactericidal and killing assays demonstrated the exceptional efficacy of the complexes against these potentially weaponizable pathogens.
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Affiliation(s)
- Matthew J Panzner
- Department of Chemistry, University of Akron, Akron, OH 44325-3601, USA
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39
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Delaude L, Bielawski CW, Estes DM, Cannon CL, Leid JG, Youngs WJ, Crudden CM, Cavallo L. Betaine Adducts of N‐Heterocyclic Carbenes: Synthesis, Properties, and Reactivity / Synthesis and Study of 5,5′‐Bibenzimidazolylidenes and Their Bimetallic Complexes / Synthesis and in vitro Efficacy Studies of Silver Carbene Complexes on Biosafety Level 3 Bacteria / Structure and Reactivity of Dinitrogen Rhodium Complexes Containing N‐Heterocyclic Carbene Ligands / Samb
V
ca: A Web Application for the Calculation of the Buried Volume of N‐Heterocyclic Carbene Ligands — (Eur. J. Inorg. Chem. 13/2009). Eur J Inorg Chem 2009. [DOI: 10.1002/ejic.200990030] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Lionel Delaude
- Center for Education and Research on Macromolecules (CERM), Institut de Chimie (B6a), Université de Liège, Sart‐Tilman par 4000 Liège, Belgium, Fax: +32‐4‐366‐3497
| | - Christopher W. Bielawski
- Department of Chemistry and Biochemistry, The University of Texas at Austin Austin, TX 78712, USA
| | - D. Mark Estes
- Department of Pediatrics, University of Texas Medical Branch, Galveston, Texas 77555, USA
| | - Carolyn L. Cannon
- Department of Pediatrics and Molecular Microbiology andMicrobial Pathogenesis, Washington University School of Medicine, St. Louis, MO 63110, USA
| | - Jeff G. Leid
- Department of Biological Sciences, Northern Arizona University, Flagstaff, Arizona 86011, USA
| | - Wiley J. Youngs
- Department of Chemistry, University of Akron, Akron, OH 44325‐3601, USA, Fax: +1‐330‐972‐6085
| | - Cathleen M. Crudden
- Department of Chemistry, Queen's University, Chernoff Hall, 90 Bader Lane, Kingston, Ontario, K7L 3N6, Canada, Fax: +1‐613‐533‐6669
| | - Luigi Cavallo
- Department of Chemistry, University of Salerno, Via Ponte don Melillo, 84084 Fisciano, Italy, Fax: +39‐089‐969603
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Hindi KM, Ditto AJ, Panzner MJ, Medvetz DA, Han DS, Hovis CE, Hilliard JK, Taylor JB, Yun YH, Cannon CL, Youngs WJ. The antimicrobial efficacy of sustained release silver-carbene complex-loaded L-tyrosine polyphosphate nanoparticles: characterization, in vitro and in vivo studies. Biomaterials 2009; 30:3771-9. [PMID: 19395021 DOI: 10.1016/j.biomaterials.2009.03.044] [Citation(s) in RCA: 125] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2009] [Accepted: 03/17/2009] [Indexed: 11/26/2022]
Abstract
The pressing need to treat multi-drug resistant bacteria in the chronically infected lungs of cystic fibrosis (CF) patients has given rise to novel nebulized antimicrobials. We have synthesized a silver-carbene complex (SCC10) active against a variety of bacterial strains associated with CF and chronic lung infections. Our studies have demonstrated that SCC10-loaded into L-tyrosine polyphosphate nanoparticles (LTP NPs) exhibits excellent antimicrobial activity in vitro and in vivo against the CF relevant bacteria Pseudomonas aeruginosa. Encapsulation of SCC10 in LTP NPs provides sustained release of the antimicrobial over the course of several days translating into efficacious results in vivo with only two administered doses over a 72 h period.
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Affiliation(s)
- Khadijah M Hindi
- Department of Chemistry, University of Akron, Akron, OH 44325-3601, USA
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41
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Panzner MJ, Youngs WJ, Tessier CA. A crystallographically isolated dimeric hydrolyzed chloro-phosphazene dianion. Acta Crystallogr Sect E Struct Rep Online 2008; 65:m105. [PMID: 21581471 PMCID: PMC2968009 DOI: 10.1107/s1600536808042116] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2008] [Accepted: 12/10/2008] [Indexed: 11/10/2022]
Abstract
Single crystals of the title compound bis[bis-(1-ethyl-3-methyl-imidazol-2-yl-idene)silver(I)] 1,5,5,7,11,11-hexa-chloro-2,8-di-oxa-4,6,10,12,13,14-hexa-aza-1λ(5),3,5λ(5),7λ(5),9,11λ(5)-hexa-phospha-tricyclo-[7.3.1.1(3,7)]tetra-deca-1(13),4,7(14),10-tetra-ene-6,12-diide 3,9-dioxide, [Ag(C(6)H(10)N(2))(2)](Cl(6)N(6)O(4)P(6))(0.5), were isolated from the reaction of the silver N-heteocyclic carbene complex [Ag(C(6)H(10)N(2))(2)]Cl and hexa-chloro-cyclo-triphos-phazene [NPCl(2)](3 )in the presence of water. The asymmetric unit contains one silver carbene cation with the carbene ligands bound to the Ag(I) in an almost linear arrangement and one half of a hydrolyzed phosphazene dianion. The second cation and additional half of the anion are generated by an inversion center.
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Affiliation(s)
- Matthew J Panzner
- The University of Akron, Chemistry Department, Akron, OH 44325-3601, USA
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Hindi KM, Siciliano TJ, Durmus S, Panzner MJ, Medvetz DA, Reddy DV, Hogue LA, Hovis CE, Hilliard JK, Mallet RJ, Tessier CA, Cannon CL, Youngs WJ. Synthesis, stability, and antimicrobial studies of electronically tuned silver acetate N-heterocyclic carbenes. J Med Chem 2008; 51:1577-83. [PMID: 18288795 DOI: 10.1021/jm0708679] [Citation(s) in RCA: 182] [Impact Index Per Article: 11.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A series of methylated imidazolium salts with varying substituents on the 4 and 5 positions of the imidazole ring were synthesized. These salts were reacted with silver acetate to afford their corresponding silver N-heterocyclic carbene (NHC) complexes. These complexes were then evaluated for their stability in water as well as for their antimicrobial efficacy against a variety of bacterial strains associated with cystic fibrosis and chronic lung infections.
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Affiliation(s)
- Khadijah M Hindi
- Department of Chemistry, University of Akron, Akron, OH 44325-3601, USA
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43
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Garner P, Hu J, Parker CG, Youngs WJ, Medvetz D. The CuI-catalyzed exo-selective asymmetric multicomponent [C+NC+CC] coupling reaction. Tetrahedron Lett 2007. [DOI: 10.1016/j.tetlet.2007.03.145] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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44
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Kalikhman I, Gostevskii B, Kertsnus E, Botoshansky M, Tessier CA, Youngs WJ, Deuerlein S, Stalke D, Kost D. Competitive Molecular Rearrangements in Hexacoordinate Cyano-Silicon Dichelates. Organometallics 2007. [DOI: 10.1021/om061176y] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Inna Kalikhman
- Department of Chemistry, Ben-Gurion University of the Negev, Beer-Sheva 84105, Israel, A. E. Favorsky Irkutsk Institute of Chemistry, RAS, Irkutsk, Russian Federation, Department of Chemistry, Technion−Israel Institute of Technology, Haifa 32000, Israel, Department of Chemistry, University of Akron, Akron, Ohio 44325-3601, and Institut für Anorganische Chemie, Universität Göttingen, Göttingen, Germany
| | - Boris Gostevskii
- Department of Chemistry, Ben-Gurion University of the Negev, Beer-Sheva 84105, Israel, A. E. Favorsky Irkutsk Institute of Chemistry, RAS, Irkutsk, Russian Federation, Department of Chemistry, Technion−Israel Institute of Technology, Haifa 32000, Israel, Department of Chemistry, University of Akron, Akron, Ohio 44325-3601, and Institut für Anorganische Chemie, Universität Göttingen, Göttingen, Germany
| | - Evgenia Kertsnus
- Department of Chemistry, Ben-Gurion University of the Negev, Beer-Sheva 84105, Israel, A. E. Favorsky Irkutsk Institute of Chemistry, RAS, Irkutsk, Russian Federation, Department of Chemistry, Technion−Israel Institute of Technology, Haifa 32000, Israel, Department of Chemistry, University of Akron, Akron, Ohio 44325-3601, and Institut für Anorganische Chemie, Universität Göttingen, Göttingen, Germany
| | - Mark Botoshansky
- Department of Chemistry, Ben-Gurion University of the Negev, Beer-Sheva 84105, Israel, A. E. Favorsky Irkutsk Institute of Chemistry, RAS, Irkutsk, Russian Federation, Department of Chemistry, Technion−Israel Institute of Technology, Haifa 32000, Israel, Department of Chemistry, University of Akron, Akron, Ohio 44325-3601, and Institut für Anorganische Chemie, Universität Göttingen, Göttingen, Germany
| | - Claire A. Tessier
- Department of Chemistry, Ben-Gurion University of the Negev, Beer-Sheva 84105, Israel, A. E. Favorsky Irkutsk Institute of Chemistry, RAS, Irkutsk, Russian Federation, Department of Chemistry, Technion−Israel Institute of Technology, Haifa 32000, Israel, Department of Chemistry, University of Akron, Akron, Ohio 44325-3601, and Institut für Anorganische Chemie, Universität Göttingen, Göttingen, Germany
| | - Wiley J. Youngs
- Department of Chemistry, Ben-Gurion University of the Negev, Beer-Sheva 84105, Israel, A. E. Favorsky Irkutsk Institute of Chemistry, RAS, Irkutsk, Russian Federation, Department of Chemistry, Technion−Israel Institute of Technology, Haifa 32000, Israel, Department of Chemistry, University of Akron, Akron, Ohio 44325-3601, and Institut für Anorganische Chemie, Universität Göttingen, Göttingen, Germany
| | - Stephan Deuerlein
- Department of Chemistry, Ben-Gurion University of the Negev, Beer-Sheva 84105, Israel, A. E. Favorsky Irkutsk Institute of Chemistry, RAS, Irkutsk, Russian Federation, Department of Chemistry, Technion−Israel Institute of Technology, Haifa 32000, Israel, Department of Chemistry, University of Akron, Akron, Ohio 44325-3601, and Institut für Anorganische Chemie, Universität Göttingen, Göttingen, Germany
| | - Dietmar Stalke
- Department of Chemistry, Ben-Gurion University of the Negev, Beer-Sheva 84105, Israel, A. E. Favorsky Irkutsk Institute of Chemistry, RAS, Irkutsk, Russian Federation, Department of Chemistry, Technion−Israel Institute of Technology, Haifa 32000, Israel, Department of Chemistry, University of Akron, Akron, Ohio 44325-3601, and Institut für Anorganische Chemie, Universität Göttingen, Göttingen, Germany
| | - Daniel Kost
- Department of Chemistry, Ben-Gurion University of the Negev, Beer-Sheva 84105, Israel, A. E. Favorsky Irkutsk Institute of Chemistry, RAS, Irkutsk, Russian Federation, Department of Chemistry, Technion−Israel Institute of Technology, Haifa 32000, Israel, Department of Chemistry, University of Akron, Akron, Ohio 44325-3601, and Institut für Anorganische Chemie, Universität Göttingen, Göttingen, Germany
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45
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Medvetz DA, Stakleff KD, Schreiber T, Custer PD, Hindi K, Panzner MJ, Blanco DD, Taschner MJ, Tessier CA, Youngs WJ. Ovarian cancer activity of cyclic amine and thiaether metal complexes. J Med Chem 2007; 50:1703-6. [PMID: 17343369 DOI: 10.1021/jm060857s] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
A thiaether metal complex 1-aza-4,7-dithiacyclononane-RhCl3, 2, and cyclic amine metal complexes tacn-CuBr2, 3, and Me3tacn-RuCl3, 4, have been evaluated for anticancer activity against the ovarian cancer cell line NuTu-19 and for cell toxicity against the noncancerous ovarian tissue cell line OVepi. Specifically, metal complex 2 is active when compared to cisplatin at micromolar concentrations using the MTT and cell invasion assay. The in vitro results reported warrant further evaluation of metal complex 2 in living systems.
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Affiliation(s)
- Doug A Medvetz
- The University of Akron, 190 East Buchtel Commons, Akron, Ohio 44325, USA
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46
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Kascatan-Nebioglu A, Panzner MJ, Tessier CA, Cannon CL, Youngs WJ. N-Heterocyclic carbene–silver complexes: A new class of antibiotics. Coord Chem Rev 2007. [DOI: 10.1016/j.ccr.2006.08.019] [Citation(s) in RCA: 409] [Impact Index Per Article: 24.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
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Kascatan-Nebioglu A, Melaiye A, Hindi K, Durmus S, Panzner MJ, Hogue LA, Mallett RJ, Hovis CE, Coughenour M, Crosby SD, Milsted A, Ely DL, Tessier CA, Cannon CL, Youngs WJ. Synthesis from caffeine of a mixed N-heterocyclic carbene-silver acetate complex active against resistant respiratory pathogens. J Med Chem 2007; 49:6811-8. [PMID: 17154511 DOI: 10.1021/jm060711t] [Citation(s) in RCA: 196] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The bis(N-heterocyclic carbene) (NHC) silver complex, 3, with a methyl carbonate anion was formed from the reaction of the iodide salt of methylated caffeine, 1, with silver (I) oxide in methanol. Attempts to crystallize this complex from a mixture of common alcohols and ethyl acetate led to the formation of an NHC-silver acetate complex, 4. The more direct synthesis of 4 was accomplished by the in-situ deprotonation of 1 by silver acetate in methanol. Complex 4 demonstrated antimicrobial activity against numerous resistant respiratory pathogens from the lungs of cystic fibrosis (CF) patients including members of the Burkholderia cepacia complex that cause a high rate of mortality in patients with cystic fibrosis (CF). Application of this NHC silver complex to primary cultures of murine respiratory epithelial cells followed by microarray analysis showed minimal gene expression changes at the concentrations effective against respiratory pathogens. Furthermore, methylated caffeine without silver showed some antibacterial and antifungal activity.
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48
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Dogan O, Koyuncu H, Garner P, Bulut A, Youngs WJ, Panzner M. New Zinc(II)-Based Catalyst for Asymmetric Azomethine Ylide Cycloaddition Reactions. Org Lett 2006; 8:4687-90. [PMID: 17020278 DOI: 10.1021/ol061521f] [Citation(s) in RCA: 95] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
[reaction: see text] A new chiral aziridino alcohol ligand for zinc(II)-catalyzed azomethine ylide cycloadditions is described. In the presence of this catalyst, N-arylidene glycine methyl esters react with a variety of dipolarophiles to give substituted pyrrolidines in very good to excellent chemical yields and up to 95% ee. The absolute sense of asymmetric induction appears to be dipolarophile-dependent.
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Affiliation(s)
- Ozdemir Dogan
- Department of Chemistry, Middle East Technical University, 06531 Ankara, Turkey.
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49
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Garner P, Kaniskan HU, Hu J, Youngs WJ, Panzner M. Asymmetric Multicomponent [C+NC+CC] Synthesis of Highly Functionalized Pyrrolidines Catalyzed by Silver(I). Org Lett 2006; 8:3647-50. [PMID: 16898782 DOI: 10.1021/ol061113b] [Citation(s) in RCA: 35] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
[reaction: see text] Highly functionalized pyrrolidines are obtained in a single chemical step via a mild, efficient, and selective Ag(I)-catalyzed asymmetric [C+NC+CC] coupling process. Oppolzer's camphorsultam enables the desired reaction cascade and provides a reliable means to control the developing stereochemistry and purify the products. This three-component reaction provides unprecedented access to structurally diverse pyrrolidines for both target- and diversity-oriented syntheses.
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Affiliation(s)
- Philip Garner
- Department of Chemistry, Case Western Reserve University, Cleveland, Ohio 44106-7078, USA.
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50
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Kalikhman I, Gostevskii B, Botoshansky M, Kaftory M, Tessier CA, Panzner MJ, Youngs WJ, Kost D. Octahedral and Bicapped-Tetrahedral Silicon Configurations in the Solid State and Their Dynamic Coexistence in Solution. Organometallics 2006. [DOI: 10.1021/om0509802] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Inna Kalikhman
- Department of Chemistry, Ben-Gurion University of the Negev, Beer-Sheva 84105, Israel, A. E. Favorsky Irkutsk Institute of Chemistry, RAS, Irkutsk, Russia, Department of Chemistry, Technion-Israel Institute of Technology, Haifa 32000, Israel, and Department of Chemistry, University of Akron, Akron, Ohio 44325-3601
| | - Boris Gostevskii
- Department of Chemistry, Ben-Gurion University of the Negev, Beer-Sheva 84105, Israel, A. E. Favorsky Irkutsk Institute of Chemistry, RAS, Irkutsk, Russia, Department of Chemistry, Technion-Israel Institute of Technology, Haifa 32000, Israel, and Department of Chemistry, University of Akron, Akron, Ohio 44325-3601
| | - Mark Botoshansky
- Department of Chemistry, Ben-Gurion University of the Negev, Beer-Sheva 84105, Israel, A. E. Favorsky Irkutsk Institute of Chemistry, RAS, Irkutsk, Russia, Department of Chemistry, Technion-Israel Institute of Technology, Haifa 32000, Israel, and Department of Chemistry, University of Akron, Akron, Ohio 44325-3601
| | - Menahem Kaftory
- Department of Chemistry, Ben-Gurion University of the Negev, Beer-Sheva 84105, Israel, A. E. Favorsky Irkutsk Institute of Chemistry, RAS, Irkutsk, Russia, Department of Chemistry, Technion-Israel Institute of Technology, Haifa 32000, Israel, and Department of Chemistry, University of Akron, Akron, Ohio 44325-3601
| | - Claire A. Tessier
- Department of Chemistry, Ben-Gurion University of the Negev, Beer-Sheva 84105, Israel, A. E. Favorsky Irkutsk Institute of Chemistry, RAS, Irkutsk, Russia, Department of Chemistry, Technion-Israel Institute of Technology, Haifa 32000, Israel, and Department of Chemistry, University of Akron, Akron, Ohio 44325-3601
| | - Matthew J. Panzner
- Department of Chemistry, Ben-Gurion University of the Negev, Beer-Sheva 84105, Israel, A. E. Favorsky Irkutsk Institute of Chemistry, RAS, Irkutsk, Russia, Department of Chemistry, Technion-Israel Institute of Technology, Haifa 32000, Israel, and Department of Chemistry, University of Akron, Akron, Ohio 44325-3601
| | - Wiley J. Youngs
- Department of Chemistry, Ben-Gurion University of the Negev, Beer-Sheva 84105, Israel, A. E. Favorsky Irkutsk Institute of Chemistry, RAS, Irkutsk, Russia, Department of Chemistry, Technion-Israel Institute of Technology, Haifa 32000, Israel, and Department of Chemistry, University of Akron, Akron, Ohio 44325-3601
| | - Daniel Kost
- Department of Chemistry, Ben-Gurion University of the Negev, Beer-Sheva 84105, Israel, A. E. Favorsky Irkutsk Institute of Chemistry, RAS, Irkutsk, Russia, Department of Chemistry, Technion-Israel Institute of Technology, Haifa 32000, Israel, and Department of Chemistry, University of Akron, Akron, Ohio 44325-3601
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