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He Y, Liu D, Zhu C, Chen X, Ye H, Ye M. Prevention of the Lachnum polysaccharide and its selenium derivatives on cisplatin-induced acute kidney injury in mice. Bioorg Med Chem Lett 2024; 97:129192. [PMID: 36813052 DOI: 10.1016/j.bmcl.2023.129192] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2022] [Revised: 02/07/2023] [Accepted: 02/17/2023] [Indexed: 02/22/2023]
Abstract
To investigate the renal protective effects of the polysaccharide LEP-1a and derivatives of selenium (SeLEP-1a) from Lachnum YM38, cisplatin (CP) was used to establish an acute kidney model. LEP-1a and SeLEP-1a could effectively reverse the decrease in renal index and improved renal oxidative stress. LEP-1a and SeLEP-1a significantly reduced the contents of the inflammatory cytokines. They could inhibit the release of cyclooxygenase 2 (COX-2) and nitric oxide synthase (iNOS) and increase the expression of nuclear factor erythroid 2-related factor 2 (Nrf2) and hemeoxygenase-1 (HO-1). At the same time, the PCR results indicated that SeLEP-1a could significantly inhibit the mRNA expression levels of toll-like receptor 4 (TLR4), nuclear factor-kB (NF-κB) p65 and inhibitor of kappa B-alpha (IκBα). Western blot analysis showed that LEP-1a and SeLEP-1a significantly downregulated the expression levels of Bcl-2-associated X protein (Bax) and cleaved caspase-3 and upregulated phosphatidylinositol 3-kinase (p-PI3K), protein kinase B (p-Akt) and B-cell lymphoma 2 (Bcl-2) protein expression levels in the kidney. LEP-1a and SeLEP-1a could improve CP-induced acute kidney injury by regulating the oxidative stress response, NF-κB-mediated inflammation and the PI3K/Akt-mediated apoptosis signalling pathway.
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Affiliation(s)
- Yaling He
- Engineering Research Center of Bio-process, School of Food and Biological Engineering, Hefei University of Technology, Hefei 230009, China
| | - Dong Liu
- School of Agriculture, Forestry and Fashion Technology, Anqing Vocational and Technical College, Anqing 246003, China
| | - Changsong Zhu
- Hefei University of Technology Hospital, Hefei 230009, China
| | - Xue Chen
- Engineering Research Center of Bio-process, School of Food and Biological Engineering, Hefei University of Technology, Hefei 230009, China
| | - Hongling Ye
- School of Agriculture, Forestry and Fashion Technology, Anqing Vocational and Technical College, Anqing 246003, China
| | - Ming Ye
- Engineering Research Center of Bio-process, School of Food and Biological Engineering, Hefei University of Technology, Hefei 230009, China.
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Min S, Tao W, Miao Y, Li Y, Wu T, He X, Zhang Y, Liu B, Meng Z, Han K, Liu S, Li L, Chen J, Zhao S, Zhang J, Zhang X. Dual Delivery of Tetramethylpyrazine and miR-194-5p Using Soft Mesoporous Organosilica Nanoparticles for Acute Lung Injury Therapy. Int J Nanomedicine 2023; 18:6469-6486. [PMID: 38026537 PMCID: PMC10640848 DOI: 10.2147/ijn.s420802] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2023] [Accepted: 10/27/2023] [Indexed: 12/01/2023] Open
Abstract
Background The respiratory system is intensely damaged by acute lung injury (ALI). The anti-inflammatory effects of tetramethylpyrazine (TMP) against ALI have been confirmed, but it exhibits a short half-life. miR-194-5p could directly target Rac1, but the internalization rate of miRNA cells was low. Purpose To explore the potential of the soft mesoporous organic silica nanoplatform (NPs) as carriers for delivery of TMP and miR-194-5p through the tail vein. Methods NPs@TMP and NPs@PEI@miR-194-5p were added to the HUVEC cell-lines, in vitro, to observe the cell uptake and cytotoxic effects. In vivo experiments were conducted by injecting fluorescently labeled NPs through the tail vein and tracking distribution. Therapeutic and toxic side-effects were analyzed systemically. Results In vitro study exhibited that NPs have no toxic effect on HUVECs within the experimental parameters and have excellent cellular uptake. The IVIS Spectrum Imaging System shows that NPs accumulate mainly in the lungs. NPs@TMP treatment can improved oxidative stress and inflammation levels in ALI mice and inhibited the TLR4/NLRP3/caspase 1 pathway. NPs@PEI@miR-194-5p can inhibit the Rac1/ZO-1/occludin pathway and improved endothelial cell permeability in ALI mice. The co-treatment of NPs@TMP and NPs@PEI@miR-194-5p can significantly improved the survival rates of the mice, reduced pulmonary capillary permeability and improved pathological injury in ALI mice. Innovation This study combined traditional Chinese medicine, bioinformatics, cellular molecular biology and nanobiomedicine to study the pathogenesis and treatment of ALI. The rate of cellular internalization was improved by changing the shape and hardness of nanoparticles. NPs@TMP and NPs@PEI@miR-194-5p combined application can significantly improve the survival condition and pathological injury of mice. Conclusion NPs loaded with TMP and miR-194-5p showed a greater therapeutic effect in ALI mice.
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Affiliation(s)
- Simin Min
- Bengbu Medical College Key Laboratory of Cardiovascular and Cerebrovascular Diseases, Bengbu Medical College, Bengbu, Anhui, 233030, People’s Republic of China
- Suzhou Hospital of Anhui Medical University, Suzhou, Anhui, 234000, People’s Republic of China
| | - Weiting Tao
- Bengbu Medical College Key Laboratory of Cardiovascular and Cerebrovascular Diseases, Bengbu Medical College, Bengbu, Anhui, 233030, People’s Republic of China
| | - Yuchen Miao
- Department of Chemistry, Bengbu Medical College, Bengbu, Anhui, 233030, People’s Republic of China
| | - Yan Li
- School of Medicine and Health Engineering, Changzhou University, Changzhou, Jiangsu, 213164, People’s Republic of China
| | - Tianyu Wu
- School of Public Health, Bengbu Medical College, Bengbu, Anhui, 233030, People’s Republic of China
| | - Xiaoyu He
- Department of Rheumatology and Immunology, The First Affiliated Hospital of Bengbu Medical College, Bengbu, Anhui, 233030, People’s Republic of China
| | - Yijing Zhang
- School of Clinical Medicine, Bengbu Medical College, Bengbu, Anhui, 233030, People’s Republic of China
| | - Bangye Liu
- School of Clinical Medicine, Bengbu Medical College, Bengbu, Anhui, 233030, People’s Republic of China
| | - Zixin Meng
- School of Clinical Medicine, Bengbu Medical College, Bengbu, Anhui, 233030, People’s Republic of China
| | - Ke Han
- Bengbu Medical College Key Laboratory of Cardiovascular and Cerebrovascular Diseases, Bengbu Medical College, Bengbu, Anhui, 233030, People’s Republic of China
| | - Saisai Liu
- Bengbu Medical College Key Laboratory of Cardiovascular and Cerebrovascular Diseases, Bengbu Medical College, Bengbu, Anhui, 233030, People’s Republic of China
| | - Li Li
- Bengbu Medical College Key Laboratory of Cardiovascular and Cerebrovascular Diseases, Bengbu Medical College, Bengbu, Anhui, 233030, People’s Republic of China
| | - Jie Chen
- Bengbu Medical College Key Laboratory of Cardiovascular and Cerebrovascular Diseases, Bengbu Medical College, Bengbu, Anhui, 233030, People’s Republic of China
| | - Shidi Zhao
- Bengbu Medical College Key Laboratory of Cardiovascular and Cerebrovascular Diseases, Bengbu Medical College, Bengbu, Anhui, 233030, People’s Republic of China
| | - Junjie Zhang
- Department of Chemistry, Bengbu Medical College, Bengbu, Anhui, 233030, People’s Republic of China
| | - Xiaonan Zhang
- Bengbu Medical College Key Laboratory of Cardiovascular and Cerebrovascular Diseases, Bengbu Medical College, Bengbu, Anhui, 233030, People’s Republic of China
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Singh G, Sharma S, Devi A, Devi S, Yadav R, Sehgal R, Mohan B. Click derived organosilane assembled with nano platform for the detection of Cu 2+ ions: Biological evaluation and molecular docking approach. Spectrochim Acta A Mol Biomol Spectrosc 2023; 295:122618. [PMID: 36934599 DOI: 10.1016/j.saa.2023.122618] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/08/2023] [Revised: 02/28/2023] [Accepted: 03/08/2023] [Indexed: 06/18/2023]
Abstract
Metal ions have active roles in biochemical, industrial, and environmental processes. The design and development of new rapid sensing materials with advanced reasonable, compelling, and convenient, techniques are urgent. Here in this work, we design and develop sensor with the facile amalgamation of the pyrene-based organosilane (5) through a click silylation approach silicon composite for selective detection of Cu2+ ions. Physicochemical and keen methods are employed to perceive the resultant hybrid nanoparticles (H-NPs), and these nanocomposites similarly displayed a strong affection for Cu2+ ions. In addition, the identification restrictions while utilizing 5 and H-NP's towards Cu2+ found in this study are far lower than the WHO rules for drinking water. Further, organosilane (5) shows good antibacterial and antioxidant activity. The antibacterial effects of triazole-based organosilane (5), are evaluated with a molecular docking study with Escherichia coli (IJZQ) was conducted. The selected ligand was revealed to have a reasonable docking score with a binding energy of -8.40 kcal mol-1.
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Affiliation(s)
- Gurjaspreet Singh
- Department of Chemistry, Panjab University, Chandigarh 160014, India.
| | - Sanjay Sharma
- Department of Chemistry, Panjab University, Chandigarh 160014, India
| | - Anita Devi
- Department of Chemistry, Panjab University, Chandigarh 160014, India
| | - Swati Devi
- Department of Chemistry, Panjab University, Chandigarh 160014, India
| | - Richa Yadav
- Department of Medical Parasitology, PGIMER, Chandigarh 160014, India
| | - Rakesh Sehgal
- Department of Medical Parasitology, PGIMER, Chandigarh 160014, India.
| | - Brij Mohan
- Centro de Química Estrutural, Institute of Molecular Sciences, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, 1049-001 Lisboa, Portugal
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Zhao R, Ma X, Bai L, Li X, Mamouni K, Yang Y, Liu H, Danaher A, Cook N, Kucuk O, Hodges RS, Gera L, Wu D. Overcoming prostate cancer drug resistance with a novel organosilicon small molecule. Neoplasia 2021; 23:1261-1274. [PMID: 34781084 PMCID: PMC8604682 DOI: 10.1016/j.neo.2021.11.006] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2021] [Revised: 10/06/2021] [Accepted: 11/04/2021] [Indexed: 12/25/2022]
Abstract
A major challenge to the treatment of advanced prostate cancer (PCa) is the development of resistance to androgen-deprivation therapy (ADT) and chemotherapy. It is imperative to discover effective therapies to overcome drug resistance and improve clinical outcomes. We have developed a novel class of silicon-containing compounds and evaluated the anticancer activities and mechanism of action using cellular and animal models of drug-resistant PCa. Five organosilicon compounds were evaluated for their anticancer activities in the NCI-60 panel and established drug-resistant PCa cell lines. GH1504 exhibited potent in vitro cytotoxicity in a broad spectrum of human cancer cells, including PCa cells refractory to ADT and chemotherapy. Molecular studies identified several potential targets of GH1504, most notably androgen receptor (AR), AR variant 7 (AR-v7) and survivin. Mechanistically, GH1504 may promote the protein turnover of AR, AR-v7 and survivin, thereby inducing apoptosis in ADT-resistant and chemoresistant PCa cells. Animal studies demonstrated that GH1504 effectively inhibited the in vivo growth of ADT-resistant CWR22Rv1 and chemoresistant C4-2B-TaxR xenografts in subcutaneous and intraosseous models. These preclinical results indicated that GH1504 is a promising lead that can be further developed as a novel therapy for drug-resistant PCa.
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Affiliation(s)
- Rui Zhao
- Department of Urology, China-Japan Union Hospital of Jilin University, Changchun, Jilin, China; Molecular Oncology and Biomarkers Program, Georgia Cancer Center, and Department of Biochemistry and Molecular Biology, Medical College of Georgia, Augusta University, Augusta, GA, USA
| | - Xiaowei Ma
- Molecular Oncology and Biomarkers Program, Georgia Cancer Center, and Department of Biochemistry and Molecular Biology, Medical College of Georgia, Augusta University, Augusta, GA, USA; Department of Clinical Laboratory, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Lijuan Bai
- Molecular Oncology and Biomarkers Program, Georgia Cancer Center, and Department of Biochemistry and Molecular Biology, Medical College of Georgia, Augusta University, Augusta, GA, USA; Department of Geriatrics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China
| | - Xin Li
- Molecular Oncology and Biomarkers Program, Georgia Cancer Center, and Department of Biochemistry and Molecular Biology, Medical College of Georgia, Augusta University, Augusta, GA, USA; Center for Cancer Research and Therapeutic Development and Department of Biological Sciences, Clark Atlanta University, Atlanta, GA, USA
| | - Kenza Mamouni
- Molecular Oncology and Biomarkers Program, Georgia Cancer Center, and Department of Biochemistry and Molecular Biology, Medical College of Georgia, Augusta University, Augusta, GA, USA
| | - Yang Yang
- Molecular Oncology and Biomarkers Program, Georgia Cancer Center, and Department of Biochemistry and Molecular Biology, Medical College of Georgia, Augusta University, Augusta, GA, USA; Department of Otorhinolaryngology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China
| | - HongYan Liu
- Dotquant LLC, CoMotion Labs at University of Washington, Seattle, WA, USA
| | - Alira Danaher
- Center for Cancer Research and Therapeutic Development and Department of Biological Sciences, Clark Atlanta University, Atlanta, GA, USA
| | - Nicholas Cook
- Center for Cancer Research and Therapeutic Development and Department of Biological Sciences, Clark Atlanta University, Atlanta, GA, USA
| | - Omer Kucuk
- Department of Hematology and Medical Oncology, Winship Cancer Institute, Emory University School of Medicine, Atlanta, GA, USA; Department of Urology, Emory University School of Medicine, Atlanta, GA, USA
| | - Robert S Hodges
- Department of Biochemistry and Molecular Genetics, University of Colorado Denver, Anschutz Medical Campus, School of Medicine, Aurora, CO, USA; AMP Discovery LLC, Aurora, CO, USA
| | - Lajos Gera
- Department of Biochemistry and Molecular Genetics, University of Colorado Denver, Anschutz Medical Campus, School of Medicine, Aurora, CO, USA; AMP Discovery LLC, Aurora, CO, USA
| | - Daqing Wu
- Molecular Oncology and Biomarkers Program, Georgia Cancer Center, and Department of Biochemistry and Molecular Biology, Medical College of Georgia, Augusta University, Augusta, GA, USA; Center for Cancer Research and Therapeutic Development and Department of Biological Sciences, Clark Atlanta University, Atlanta, GA, USA; Department of Urology, Emory University School of Medicine, Atlanta, GA, USA; MetCure Therapeutics LLC, Atlanta, GA, USA.
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Liu Y, Xie L, Gao M, Zhang R, Gao J, Sun J, Chai Q, Wu T, Liang K, Chen P, Wan Q, Kong B. Super-Assembled Periodic Mesoporous Organosilica Frameworks for Real-Time Hypoxia-Triggered Drug Release and Monitoring. ACS Appl Mater Interfaces 2021; 13:50246-50257. [PMID: 34637262 DOI: 10.1021/acsami.1c15067] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Hypoxia, induced by inadequate oxygen supply, is a key indication of various major illnesses, which necessitates the need to develop new nanoprobes capable of sensing hypoxia environments for the targeted system monitoring and drug delivery. Herein, we report a hypoxia-responsive, periodic mesoporous organosilica (PMO) nanocarrier for repairing hypoxia damage. β-cyclodextrin (β-CD) capped azobenzene functionalization on the PMO surface could be effectively cleaved by azoreductase under a hypoxia environment. Moreover, the nanosystem is equipped with fluorescence resonance energy transfer (FRET) pair (tetrastyrene derivative (TPE) covalently attached to the PMO framework as the donor and Rhodamine B (RhB) in the mesopores as the receptor) for intracellular visualization and tracking of drug release in real-time. The design of intelligent nanocarriers capable of simultaneous reporting and treating of hypoxia conditions highlights a great potential in the biomedical domain.
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Affiliation(s)
- Yingnan Liu
- Institute of Advanced Cross-field Science, College of Life Science, Qingdao University, 308 Ningxia Street, Qingdao 266071, P. R. China
| | - Lei Xie
- Collaborative Innovation Center of Chemistry for Energy Materials (iChEM), Department of Chemistry, Laboratory of Advanced Materials, Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Fudan University, Shanghai 200433, P. R. China
| | - Meng Gao
- National Supercomputer Research Center of Advanced Materials, Advanced Materials Institute, Qilu University of Technology (Shandong Academy of Sciences), Jinan 250014, P. R. China
| | - Runhao Zhang
- National Supercomputer Research Center of Advanced Materials, Advanced Materials Institute, Qilu University of Technology (Shandong Academy of Sciences), Jinan 250014, P. R. China
| | - Jingchen Gao
- Institute of Neuroregeneration & Neurorehabilitation, Department of Pathophysiology, Qingdao University, 308 Ningxia Street, Qingdao 266071, P. R. China
| | - Jiangdong Sun
- Institute of Neuroregeneration & Neurorehabilitation, Department of Pathophysiology, Qingdao University, 308 Ningxia Street, Qingdao 266071, P. R. China
| | - Qingdong Chai
- Institute of Advanced Cross-field Science, College of Life Science, Qingdao University, 308 Ningxia Street, Qingdao 266071, P. R. China
| | - Tong Wu
- Institute of Neuroregeneration & Neurorehabilitation, Department of Pathophysiology, Qingdao University, 308 Ningxia Street, Qingdao 266071, P. R. China
| | - Kang Liang
- School of Chemical Engineering and Graduate School of Biomedical Engineering, The University of New South Wales, Sydney, New South Wales 2052, Australia
| | - Pu Chen
- Department of Chemical Engineering, University of Waterloo, Waterloo, Ontario N2L 3G1, Canada
| | - Qi Wan
- Institute of Neuroregeneration & Neurorehabilitation, Department of Pathophysiology, Qingdao University, 308 Ningxia Street, Qingdao 266071, P. R. China
| | - Biao Kong
- Collaborative Innovation Center of Chemistry for Energy Materials (iChEM), Department of Chemistry, Laboratory of Advanced Materials, Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Fudan University, Shanghai 200433, P. R. China
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Zhang D, Xie Q, Liu Y, Li Z, Li H, Li S, Li Z, Cui J, Su M, Jiang X, Xue P, Bai M. Photosensitizer IR700DX-6T- and IR700DX-mbc94-mediated photodynamic therapy markedly elicits anticancer immune responses during treatment of pancreatic cancer. Pharmacol Res 2021; 172:105811. [PMID: 34390852 DOI: 10.1016/j.phrs.2021.105811] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/30/2021] [Revised: 07/26/2021] [Accepted: 08/10/2021] [Indexed: 01/10/2023]
Abstract
BACKGROUND/AIMS IR700DX-6T and IR700DX-mbc94 are two chemically synthesized photosensitizers (PSs) that target the translocator protein (TSPO) and type 2 cannabinoid receptor (CB2R), respectively, for photodynamic therapy (PDT) of cancer. Recently, we found that IR700DX-6T and IR700DX-mbc94 exhibited high selectivity and efficiency in PDT for breast cancer and malignant astrocytoma. Yet, the phototherapeutic effects of the PSs on pancreatic cancer and underlying mechanisms remain unknown. This study investigated the effect of IR700DX-6T- or IR700DX-mbc94-PDT on pancreatic cancer and whether the treatment involves eliciting anticancer immune responses in support of superior therapeutic efficacy. METHODS Four pancreatic cancer cell lines were used for in vitro studies. C57BL/6 mice bearing pancreatic cancer cell-derived xenografts were generated for in vivo studies regarding the therapeutic effects of IR700DX-6T-PDT and IR700DX-mbc94-PDT on pancreatic cancer. The immunostimulatory or immunosuppressive effects of IR700DX-6T-PDT and IR700DX-mbc94-PDT were examined by detecting CD8+ T cells, regulatory T cells (Tregs), and dendritic cells (DCs) using flow cytometry and immunohistochemistry (IHC). RESULTS TSPO and CB2R were markedly upregulated in pancreatic cancer cells and tissues. Both IR700DX-6T-PDT and IR700DX-mbc94-PDT significantly inhibited pancreatic cancer cell growth in a dose- and time-dependent manner. Notably, assessment of anticancer immune responses revealed that both IR700DX-6T-PDT and IR700DX-mbc94-PDT significantly induced CD8+ T cells, promoted maturation of DCs, and suppressed Tregs, with stronger effects exerted by IR700DX-6T-PDT compared to IR700DX-mbc94-PDT. CONCLUSIONS IR700DX-6T-PDT and IR700DX-mbc94-PDT involves eliciting anticancer immune responses. Our study has also implicated that PDT in combination with immunotherapy holds promise to improve therapeutic efficacy for patients with pancreatic cancer.
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Affiliation(s)
- Dawei Zhang
- Department of Hepatobiliary Surgery, the Second Affiliated Hospital of Guangzhou Medical University, Guangzhou, Guangdong 510260, China; Vanderbilt University Institute of Imaging Science, Vanderbilt University Medical Center, Nashville, TN 37232, USA
| | - Qing Xie
- Vanderbilt University Institute of Imaging Science, Vanderbilt University Medical Center, Nashville, TN 37232, USA
| | - Yang Liu
- Vanderbilt University Institute of Imaging Science, Vanderbilt University Medical Center, Nashville, TN 37232, USA
| | - Zongyan Li
- Department of Hepatobiliary Surgery, the Second Affiliated Hospital of Guangzhou Medical University, Guangzhou, Guangdong 510260, China
| | - Haiyan Li
- Department of Breast Surgery, the Sixth Affiliated Hospital of Sun Yat-sen University, Guangzhou, Guangdong 510650, China
| | - Shiying Li
- Key Laboratory of Molecular Target & Clinical Pharmacology and the State Key Laboratory of Respiratory Disease, School of Pharmaceutical Sciences, Guangzhou Medical University, Guangzhou, Guangdong 511436, China
| | - Zhen Li
- Vanderbilt University Institute of Imaging Science, Vanderbilt University Medical Center, Nashville, TN 37232, USA; Fourth General Surgery Department, the Fourth Affiliated Hospital of China Medical University, Shenyang, Liaoning 110000, China
| | - Jing Cui
- Vanderbilt University Institute of Imaging Science, Vanderbilt University Medical Center, Nashville, TN 37232, USA; Department of Nuclear Medicine, Henan Provincial People's Hospital, Zhengzhou, Henan 450003, China
| | - Meng Su
- Vanderbilt University Institute of Imaging Science, Vanderbilt University Medical Center, Nashville, TN 37232, USA
| | - Xiaofeng Jiang
- Department of Hepatobiliary Surgery, the Second Affiliated Hospital of Guangzhou Medical University, Guangzhou, Guangdong 510260, China
| | - Ping Xue
- Department of Hepatobiliary Surgery, the Second Affiliated Hospital of Guangzhou Medical University, Guangzhou, Guangdong 510260, China.
| | - Mingfeng Bai
- Vanderbilt University Institute of Imaging Science, Vanderbilt University Medical Center, Nashville, TN 37232, USA; Department of Radiology and Radiological Sciences, Vanderbilt University Medical Center, Nashville, TN 37232, USA; Vanderbilt Ingram Cancer Center, Vanderbilt University Medical Center, Nashville, TN 37232, USA.
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Relaño-Rodríguez I, Espinar-Buitrago MDLS, Martín-Cañadilla V, Gómez-Ramírez R, Muñoz-Fernández MÁ. G2-S16 Polyanionic Carbosilane Dendrimer Can Reduce HIV-1 Reservoir Formation by Inhibiting Macrophage Cell to Cell Transmission. Int J Mol Sci 2021; 22:8366. [PMID: 34445073 PMCID: PMC8393995 DOI: 10.3390/ijms22168366] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2021] [Revised: 07/21/2021] [Accepted: 07/31/2021] [Indexed: 11/16/2022] Open
Abstract
Human immunodeficiency virus (HIV-1) is still a major problem, not only in developing countries but is also re-emerging in several developed countries, thus the development of new compounds able to inhibit the virus, either for prophylaxis or treatment, is still needed. Nanotechnology has provided the science community with several new tools for biomedical applications. G2-S16 is a polyanionic carbosilane dendrimer capable of inhibiting HIV-1 in vitro and in vivo by interacting directly with viral particles. One of the main barriers for HIV-1 eradication is the reservoirs created in primoinfection. These reservoirs, mainly in T cells, are untargetable by actual drugs or immune system. Thus, one approach is inhibiting HIV-1 from reaching these reservoir cells. In this context, macrophages play a main role as they can deliver viral particles to T cells establishing reservoirs. We showed that G2-S16 dendrimer is capable of inhibiting the infection from infected macrophages to healthy T CD4/CD8 lymphocytes by eliminating HIV-1 infectivity inside macrophages, so they are not able to carry infectious particles to other body locations, thus preventing the reservoirs from forming.
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Affiliation(s)
- Ignacio Relaño-Rodríguez
- Section Head Immunology, Laboratorio InmunoBiología Molecular, Hospital General Universitario Gregorio Marañón (HGUGM), 28007 Madrid, Spain; (I.R.-R.); (M.d.l.S.E.-B.); (V.M.-C.)
- Instituto de Investigación Sanitaria Gregorio Marañón (IiSGM), 28007 Madrid, Spain
| | - María de la Sierra Espinar-Buitrago
- Section Head Immunology, Laboratorio InmunoBiología Molecular, Hospital General Universitario Gregorio Marañón (HGUGM), 28007 Madrid, Spain; (I.R.-R.); (M.d.l.S.E.-B.); (V.M.-C.)
- Instituto de Investigación Sanitaria Gregorio Marañón (IiSGM), 28007 Madrid, Spain
| | - Vanessa Martín-Cañadilla
- Section Head Immunology, Laboratorio InmunoBiología Molecular, Hospital General Universitario Gregorio Marañón (HGUGM), 28007 Madrid, Spain; (I.R.-R.); (M.d.l.S.E.-B.); (V.M.-C.)
- Instituto de Investigación Sanitaria Gregorio Marañón (IiSGM), 28007 Madrid, Spain
| | - Rafael Gómez-Ramírez
- Departamento de Química Orgánica y Química Inorgánica, Instituto de Investigación Química “Andrés M. del Río” (IQAR), Universidad de Alcalá (UAH), 28871 Alcalá de Henares, Spain;
- Networking Research Center on Bioengineering, Biomaterials and Nanomedicine (CIBER-BBN), 28029 Madrid, Spain
| | - María Ángeles Muñoz-Fernández
- Section Head Immunology, Laboratorio InmunoBiología Molecular, Hospital General Universitario Gregorio Marañón (HGUGM), 28007 Madrid, Spain; (I.R.-R.); (M.d.l.S.E.-B.); (V.M.-C.)
- Instituto de Investigación Sanitaria Gregorio Marañón (IiSGM), 28007 Madrid, Spain
- Networking Research Center on Bioengineering, Biomaterials and Nanomedicine (CIBER-BBN), 28029 Madrid, Spain
- Spanish HIV-HGM BioBank, Hospital General Universitario Gregorio Marañón C/Dr. Esquerdo 46, 28007 Madrid, Spain
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Okada R, Furusawa A, Inagaki F, Wakiyama H, Kato T, Okuyama S, Furumoto H, Fukushima H, Choyke PL, Kobayashi H. Endoscopic near-infrared photoimmunotherapy in an orthotopic head and neck cancer model. Cancer Sci 2021; 112:3041-3049. [PMID: 34101947 PMCID: PMC8353912 DOI: 10.1111/cas.15013] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2021] [Revised: 06/05/2021] [Accepted: 06/05/2021] [Indexed: 02/06/2023] Open
Abstract
Near-infrared photoimmunotherapy (NIR-PIT) is a cell selective cancer therapy that uses an antibody-photoabsorber (IRDye700DX, IR700) conjugate (APC) and NIR light. NIR-PIT targeting epidermal growth factor receptor (EGFR) in head and neck cancer (HNC) was conditionally approved in Japan in 2020. APC-bound tumors can be detected using endoscopic fluorescence imaging, whereas NIR light can be delivered using endoscopic fiber optics. The aims of this study were: (1) to assess the feasibility of endoscopic NIR-PIT in an orthotopic HNC model using a CD44-expressing MOC2-luc cell line; and (2) to evaluate quantitative fluorescence endoscopic imaging prior to and during NIR-PIT. The results were compared in 3 experimental groups: (1) untreated controls, (2) APC injection without light exposure (APC-IV), and (3) APC injection followed by NIR light exposure (NIR-PIT). APC injected groups showed significantly higher fluorescence signals for IR700 compared with the control group prior to therapeutic NIR light exposure, and the fluorescence signal significantly decreased in the NIR-PIT group after light exposure. After treatment, the NIR-PIT group showed significantly attenuated bioluminescence compared with the control and the APC-IV groups. Histology demonstrated diffuse necrotic death of the cancer cells in the NIR-PIT group alone. In conclusion, endoscopically delivered light combined with quantitative fluorescence imaging can be used to "see and treat" HNC. This method could also be applied to other types of cancer approachable with endoscopy.
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Affiliation(s)
- Ryuhei Okada
- Molecular Imaging BranchCenter for Cancer ResearchNational Cancer InstituteNational Institutes of HealthBethesdaMDUSA
| | - Aki Furusawa
- Molecular Imaging BranchCenter for Cancer ResearchNational Cancer InstituteNational Institutes of HealthBethesdaMDUSA
| | - Fuyuki Inagaki
- Molecular Imaging BranchCenter for Cancer ResearchNational Cancer InstituteNational Institutes of HealthBethesdaMDUSA
| | - Hiroaki Wakiyama
- Molecular Imaging BranchCenter for Cancer ResearchNational Cancer InstituteNational Institutes of HealthBethesdaMDUSA
| | - Takuya Kato
- Molecular Imaging BranchCenter for Cancer ResearchNational Cancer InstituteNational Institutes of HealthBethesdaMDUSA
| | - Shuhei Okuyama
- Molecular Imaging BranchCenter for Cancer ResearchNational Cancer InstituteNational Institutes of HealthBethesdaMDUSA
| | - Hideyuki Furumoto
- Molecular Imaging BranchCenter for Cancer ResearchNational Cancer InstituteNational Institutes of HealthBethesdaMDUSA
| | - Hiroshi Fukushima
- Molecular Imaging BranchCenter for Cancer ResearchNational Cancer InstituteNational Institutes of HealthBethesdaMDUSA
| | - Peter L. Choyke
- Molecular Imaging BranchCenter for Cancer ResearchNational Cancer InstituteNational Institutes of HealthBethesdaMDUSA
| | - Hisataka Kobayashi
- Molecular Imaging BranchCenter for Cancer ResearchNational Cancer InstituteNational Institutes of HealthBethesdaMDUSA
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9
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Yang Y, Zhang M, Yang Y, Cheng D, Yu C. Designer Anticancer Nanoprodrugs with Self-Toxification Activity Realized by Acid-triggered Biodegradation and In Situ Fragment Complexation. Angew Chem Int Ed Engl 2021; 60:11504-11513. [PMID: 33686763 DOI: 10.1002/anie.202102704] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2021] [Indexed: 12/13/2022]
Abstract
Prodrugs that allow in situ chemical conversion of less toxic precursors into active drugs in response to certain stimuli are promising anticancer candidates. Herein, we present a novel design of nanoprodrugs with a "degradation-mediated self-toxification" strategy, which realizes intracellular synthesis of anticancer agents using the nanoparticles' own degradation fragments as the precursors. To fulfill this concept, a metal complexing dicyclohexylphosphine (DCP) organosilane is carefully screened out from various ligands to conjugate onto Pd(OH)2 nanodots confined hollow silica nanospheres (PD-HSN). This constructed nanoprodrug shows acid-triggered degradation in lysosomes and neutralizes protons to induce lysosomes rupturing, generating predesigned less toxic fragments (Pd2+ and DCP-silicates) that complex into DCP/Pd complex in situ for inducing DNA damage, leading to enhanced anticancer activity against various cancer cell lines as well as in a xenograft tumour model.
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Affiliation(s)
- Yannan Yang
- Australian Institute for Bioengineering and Nanotechnology, The University of Queensland, St. Lucia, Brisbane, QLD, 4072, Australia
| | - Min Zhang
- School of Chemistry and Molecular Engineering, East China Normal University, Shanghai, 200241, P. R. China
| | - Yang Yang
- Australian Institute for Bioengineering and Nanotechnology, The University of Queensland, St. Lucia, Brisbane, QLD, 4072, Australia
| | - Dan Cheng
- Australian Institute for Bioengineering and Nanotechnology, The University of Queensland, St. Lucia, Brisbane, QLD, 4072, Australia
| | - Chengzhong Yu
- Australian Institute for Bioengineering and Nanotechnology, The University of Queensland, St. Lucia, Brisbane, QLD, 4072, Australia
- School of Chemistry and Molecular Engineering, East China Normal University, Shanghai, 200241, P. R. China
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10
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Müller SG, Jardim NS, Trindade MA, Nogueira CW. Opioid System Contributes to the Trifluoromethyl-Substituted Diselenide Effectiveness in a Lifestyle-Induced Depression Mouse Model. Mol Neurobiol 2021; 58:2231-2241. [PMID: 33417225 DOI: 10.1007/s12035-020-02255-z] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2020] [Accepted: 12/08/2020] [Indexed: 12/17/2022]
Abstract
Energy-dense foods and ethanol consumption are associated with mood disorders. m-Trifluoromethyl-diphenyl diselenide [(m-CF3-PhSe)2] has been a prominent pharmacological target due to its antidepressant-like effects. This study investigated if the modulation of opioid and glucocorticoid receptors and its well-known antioxidant property contribute to the (m-CF3-PhSe)2 antidepressant-like effect in young mice subjected to an energy-dense diet and ethanol intake. Swiss male mice [postnatal day (PND) 25] were exposed to an energy-dense diet (containing 20% fat and 20% carbohydrate) or standard chow until the PND 67. Mice received ethanol (2 g/kg) or water administration (3 times a week, intragastrically [i.g.]) from PND 45 to PND 60. After that, mice received (m-CF3-PhSe)2 (5 mg/kg/day; i.g) or vegetal oil administration from PND 60 to 66. Mice performed the behavioral tests to evaluate the depressive-like phenotype. The results showed that individually neither an energy-dense diet nor ethanol group induced a depressive-like phenotype, but the association of both induced this phenotype in young mice. Oxidative stress was characterized by the increase of malondialdehyde, the decrease in the superoxide dismutase activity, and non-protein sulfhydryl levels in the cerebral cortex of depressive-like mice. Depressive-like mice showed an increase in the protein levels of opioid receptors and depletion in those of glucocorticoid. (m-CF3-PhSe)2 abolished depressive-like phenotype and oxidative stress as well as modulated the levels of glucocorticoid and opioid receptors. In conclusion, the modulation of opioid and glucocorticoid receptors and the antioxidant property contributed to the (m-CF3-PhSe)2 antidepressant-like effect in young mice exposed to an energy-dense diet and ethanol intake.
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Affiliation(s)
- Sabrina Grendene Müller
- Laboratory of Synthesis, Reactivity, Pharmacological and Toxicological Evaluation of Organochalcogen Compounds, Department of Biochemistry and Molecular Biology, Center of Natural and Exact Sciences, Federal University of Santa Maria, Santa Maria, RS, 97105-900, Brazil
| | - Natália Silva Jardim
- Laboratory of Synthesis, Reactivity, Pharmacological and Toxicological Evaluation of Organochalcogen Compounds, Department of Biochemistry and Molecular Biology, Center of Natural and Exact Sciences, Federal University of Santa Maria, Santa Maria, RS, 97105-900, Brazil
| | - Milene Arrial Trindade
- Laboratory of Synthesis, Reactivity, Pharmacological and Toxicological Evaluation of Organochalcogen Compounds, Department of Biochemistry and Molecular Biology, Center of Natural and Exact Sciences, Federal University of Santa Maria, Santa Maria, RS, 97105-900, Brazil
| | - Cristina Wayne Nogueira
- Laboratory of Synthesis, Reactivity, Pharmacological and Toxicological Evaluation of Organochalcogen Compounds, Department of Biochemistry and Molecular Biology, Center of Natural and Exact Sciences, Federal University of Santa Maria, Santa Maria, RS, 97105-900, Brazil.
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11
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Chen L, Meng X, Liu M, Lv R, Cai B, Wang Z. Biodegradable Mesoporous Organosilica Nanosheets for Chemotherapy/Mild Thermotherapy of Cancer: Fast Internalization, High Cellular Uptake, and High Drug Loading. ACS Appl Mater Interfaces 2020; 12:30234-30246. [PMID: 32525649 DOI: 10.1021/acsami.0c09735] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
The choice of nanocarriers is crucial to fabricate ideal therapeutic nanoplatform in the treatment of cancer. Considering the advantages brought by the two-dimensional (2D) materials with atomic thickness in drug loading and cellular uptake, herein, novel 2D biodegradable mesoporous organosilica nanosheets (MONSs) are presented, and their application in chemotherapy/mild thermotherapy of cancer is studied by loading chemotherapy drug doxorubicin (DOX) and conjugating ultrasmall CuS nanoparticles. It is found that the loading of DOX in MONSs is as high as 859 μg/mg due to their large surface area and intermediate void structure. The release of DOX from MONSs is intelligently controlled by pH value, glutathione (GSH) concentration, and laser irradiation. Excitingly, in comparison with traditional spherical mesoporous organosilica nanoparticles, as-prepared MONSs not only show more rapid degradation but also exhibit faster internalization and higher cellular uptake efficiency due to their larger aspect ratios and unique cellular internalization approach of 2D materials. A mild thermotherapy induced by ultrasmall CuS nanoparticles can further promote the cellular uptake and improve chemotherapy efficacy. The in vitro and in vivo experimental results reveal that the theranostic nanoplatform based on degradable MONSs has excellent biocompatibility and anticancer effects. Therefore, MONSs are expected to be a competitive alternative to existing silica-based nanomaterials in antitumor treatment.
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Affiliation(s)
- Lizhu Chen
- School of Chemistry and Chemical Engineering, Southeast University, Nanjing, Jiangsu 211189, China
| | - Xiangyu Meng
- School of Chemistry and Chemical Engineering, Southeast University, Nanjing, Jiangsu 211189, China
| | - Mei Liu
- School of Chemistry and Chemical Engineering, Southeast University, Nanjing, Jiangsu 211189, China
| | - Rongmu Lv
- School of Chemistry and Chemical Engineering, Southeast University, Nanjing, Jiangsu 211189, China
| | - Bo Cai
- Department of Urology, The Hospital Affiliated to Nantong University, Nantong, Jiangsu 226001, China
| | - Zhifei Wang
- School of Chemistry and Chemical Engineering, Southeast University, Nanjing, Jiangsu 211189, China
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12
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Rodriguez-Izquierdo I, Gasco S, Muñoz-Fernández MA. High Preventive Effect of G2-S16 Anionic Carbosilane Dendrimer against Sexually Transmitted HSV-2 Infection. Molecules 2020; 25:molecules25132965. [PMID: 32605185 PMCID: PMC7412300 DOI: 10.3390/molecules25132965] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2020] [Revised: 06/23/2020] [Accepted: 06/25/2020] [Indexed: 12/13/2022] Open
Abstract
Anionic carbosilane dendrimers such as G2-S16 are very effective in preventing HSV-2 infection both in vitro and in vivo. We present the main achievements obtained for the G2-S16 dendrimer in vivo, especially related to its efficacy against HSV-2 infection. Moreover, we discuss the mechanisms by which the G2-S16 dendrimer applied vaginally as a topical microbicide has been demonstrated to be safe and harmless for the vaginal microbiome balance, as both conditions present an essential step that has to be overcome during microbicide development. This review points to the marked protective effect of the G2-S16 dendrimer against sexually transmitted HSV-2 infection, supporting its role as a possible microbicide against HSV-2 infection.
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Affiliation(s)
- Ignacio Rodriguez-Izquierdo
- Immunology Section, Laboratorio InmunoBiología Molecular, Hospital General Universitario Gregorio Marañón (HGUGM), Instituto Investigación Sanitaria Gregorio Marañón (IiSGM), Spanish HIV HGM BioBank, C/Dr. Esquerdo 46, 28007 Madrid, Spain; (I.R.-I.); (S.G.)
- Plataforma de Laboratorio, Hospital General Universitario Gregorio Marañón, 28007 Madrid, Spain
| | - Samanta Gasco
- Immunology Section, Laboratorio InmunoBiología Molecular, Hospital General Universitario Gregorio Marañón (HGUGM), Instituto Investigación Sanitaria Gregorio Marañón (IiSGM), Spanish HIV HGM BioBank, C/Dr. Esquerdo 46, 28007 Madrid, Spain; (I.R.-I.); (S.G.)
| | - Maria Angeles Muñoz-Fernández
- Immunology Section, Laboratorio InmunoBiología Molecular, Hospital General Universitario Gregorio Marañón (HGUGM), Instituto Investigación Sanitaria Gregorio Marañón (IiSGM), Spanish HIV HGM BioBank, C/Dr. Esquerdo 46, 28007 Madrid, Spain; (I.R.-I.); (S.G.)
- Plataforma de Laboratorio, Hospital General Universitario Gregorio Marañón, 28007 Madrid, Spain
- Networking Research Center on Bioengineering, Biomaterials and Nanomedicine (CIBER-BBN), 28007 Madrid, Spain
- Correspondence: or ; Tel.: +34-915-868-565
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13
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Vijayan VM, Tucker BS, Hwang PTJ, Bobba PS, Jun HW, Catledge SA, Vohra YK, Thomas V. Non-equilibrium organosilane plasma polymerization for modulating the surface of PTFE towards potential blood contact applications. J Mater Chem B 2020; 8:2814-2825. [PMID: 32163093 PMCID: PMC7453349 DOI: 10.1039/c9tb02757b] [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] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
We report a novel and facile organosilane plasma polymerization method designed to improve the surface characteristics of poly(tetrafluoroethylene) (PTFE). We hypothesized that the polymerized silane coating would provide an adhesive surface for endothelial cell proliferation due to a large number of surface hydroxyl groups, while the large polymer networks on the surface of PTFE would hinder platelet attachment. The plasma polymerized PTFE surfaces were then systematically characterized via different analytical techniques such as FTIR, XPS, XRD, Contact angle, and SEM. The key finding of the characterization is the time-dependent deposition of an organosilane layer on the surface of PTFE. This layer was found to provide favorable surface properties to PTFE such as a very high surface oxygen content, high hydrophilicity and improved surface mechanics. Additionally, in vitro cellular studies were conducted to determine the bio-interface properties of the plasma-treated and untreated PTFE. The important results of these experiments were rapid endothelial cell growth and decreased platelet attachment on the plasma-treated PTFE compared to untreated PTFE. Thus, this new surface modification technique could potentially address the current challenges associated with PTFE for blood contact applications, specifically poor endothelial cell growth and risk of thrombosis.
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Affiliation(s)
- Vineeth M Vijayan
- Center for Nanoscale Materials and Biointegration, The University of Alabama at Birmingham, Birmingham, AL 35294, USA. and Department of Material Science and Engineering, The University of Alabama at Birmingham, Birmingham, AL 35294, USA
| | - Bernabe S Tucker
- Department of Material Science and Engineering, The University of Alabama at Birmingham, Birmingham, AL 35294, USA
| | | | - Pratheek S Bobba
- Department of Biomedical Engineering, The University of Alabama at Birmingham, Birmingham, AL 35294, USA
| | - Ho-Wook Jun
- Department of Biomedical Engineering, The University of Alabama at Birmingham, Birmingham, AL 35294, USA
| | - Shane A Catledge
- Center for Nanoscale Materials and Biointegration, The University of Alabama at Birmingham, Birmingham, AL 35294, USA.
| | - Yogesh K Vohra
- Center for Nanoscale Materials and Biointegration, The University of Alabama at Birmingham, Birmingham, AL 35294, USA.
| | - Vinoy Thomas
- Center for Nanoscale Materials and Biointegration, The University of Alabama at Birmingham, Birmingham, AL 35294, USA. and Department of Material Science and Engineering, The University of Alabama at Birmingham, Birmingham, AL 35294, USA
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14
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Mai NXD, Birault A, Matsumoto K, Ta HKT, Intasa‐ard SG, Morrison K, Thang PB, Doan TLH, Tamanoi F. Biodegradable Periodic Mesoporous Organosilica (BPMO) Loaded with Daunorubicin: A Promising Nanoparticle-Based Anticancer Drug. ChemMedChem 2020; 15:593-599. [PMID: 32020745 PMCID: PMC7187469 DOI: 10.1002/cmdc.201900595] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2019] [Revised: 01/30/2020] [Indexed: 11/28/2022]
Abstract
Biodegradable periodic mesoporous organosilica (BPMO) nanoparticles have emerged as a promising type of nanocarrier for drug delivery, given the biodegradable feature is advantageous for clinical translation. In this paper, we report synthesis and characterization of daunorubicin (DNR) loaded BPMO. DNR was loaded onto rhodamine B-labeled BPMO that contain tetrasulfide bonds. Tumor spheroids and chicken egg tumor models were used to characterize the activity in biological settings. In the first experiment we examined the uptake of BPMO into tumor spheroids prepared from ovarian cancer cells. BPMO were efficiently taken up into tumor spheroids and inhibited their growth. In the chicken egg tumor model, intravenous injection of DNR-loaded BPMO led to the elimination of ovarian tumor. Lack of adverse effect on organs such as lung appears to be due to excellent tumor accumulation of BPMO. Thus, DNR-loaded BPMO represents a promising nanodrug compared with free DNR currently used in cancer therapy. OK.
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Affiliation(s)
- Ngoc Xuan Dat Mai
- Center for Innovative Materials and Architectures (INOMAR)Vietnam National University-Ho Chi Minh CityHo Chi Minh City721337Vietnam
- Faculty of Physics and Engineering Physics, University of ScienceVietnam National UniversityHo Chi Minh City700000Vietnam
| | - Albane Birault
- Institute for Integrated Cell-Material Sciences (ICeMS)Institute for Advanced Study Kyoto UniversityKyoto606 8501Japan
| | - Kotaro Matsumoto
- Institute for Integrated Cell-Material Sciences (ICeMS)Institute for Advanced Study Kyoto UniversityKyoto606 8501Japan
| | - Hanh Kieu Thi Ta
- Center for Innovative Materials and Architectures (INOMAR)Vietnam National University-Ho Chi Minh CityHo Chi Minh City721337Vietnam
- Faculty of Materials Science and Technology, University of ScienceVietnam National UniversityHo Chi Minh City700000Vietnam
| | - Soontaree Grace Intasa‐ard
- Institute for Integrated Cell-Material Sciences (ICeMS)Institute for Advanced Study Kyoto UniversityKyoto606 8501Japan
| | - Kendall Morrison
- TAE Life SciencesDrug Development DivisionSanta Monica, CA90404USA
| | - Phan Bach Thang
- Center for Innovative Materials and Architectures (INOMAR)Vietnam National University-Ho Chi Minh CityHo Chi Minh City721337Vietnam
| | - Tan Le Hoang Doan
- Center for Innovative Materials and Architectures (INOMAR)Vietnam National University-Ho Chi Minh CityHo Chi Minh City721337Vietnam
| | - Fuyuhiko Tamanoi
- Institute for Integrated Cell-Material Sciences (ICeMS)Institute for Advanced Study Kyoto UniversityKyoto606 8501Japan
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15
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Wang X, Tian Y, Liao X, Tang Y, Ni Q, Sun J, Zhao Y, Zhang J, Teng Z, Lu G. Enhancing selective photosensitizer accumulation and oxygen supply for high-efficacy photodynamic therapy toward glioma by 5-aminolevulinic acid loaded nanoplatform. J Colloid Interface Sci 2020; 565:483-493. [PMID: 31982715 DOI: 10.1016/j.jcis.2020.01.020] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2019] [Revised: 12/23/2019] [Accepted: 01/06/2020] [Indexed: 12/12/2022]
Abstract
The complex biology of glioma compromises therapeutic efficacy and results in poor prognosis. Photodynamic therapy (PDT) has emerged as a promising modality for localized tumor ablation with limited damage to healthy brain tissues. However, low photosensitizer concentration and hypoxic microenvironment in glioma tissue hamper the practical applications of PDT. To address the challenges, biocompatible periodic mesoporous organosilica coated Prussian blue nanoparticles (PB@PMOs) are constructed to load a biosafe prodrug 5-aminolevulinic acid (5-ALA), which is pronouncedly converted to protoporphyrin IX (PpIX) in malignant cells. PB@PMO-5-ALA induces a higher accumulation of PpIX in glioma cells compared to free 5-ALA. Meanwhile, the PB@PMOs, with a mean edge length of 81 nm and good biocompatibility, effectively decompose hydrogen peroxide to oxygen in a temperature-responsive manner. Oxygen supply further contributes to the promotion of 5-ALA-PDT. Thus, the photodynamic effect of PB@PMO-5-ALA is significantly improved, imposing augmented cytotoxicity to glioma U87MG cells. Furthermore, ex vivo fluorescence imaging elucidates the tumor PpIX increases by 75% in PB@PMO-5-ALA treated mice than that in 5-ALA treated ones post 12 h injection. Magnetic resonance imaging (MRI) and iron staining strongly demonstrate the accumulation of PB@PMO-5-ALA in glioma tissues with negative contrast enhancement and blue staining deposits, respectively. The nanoparticle accumulation and high PpIX level collaboratively enhance PDT efficacy through PB@PMO-5-ALA, which efficiently suppresses tumor growth, providing a promising option with safety for local glioma ablation.
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Affiliation(s)
- Xiaofen Wang
- Department of Medical Imaging, Jinling Hospital, Medical School of Nanjing University, Nanjing 210002, Jiangsu, PR China
| | - Ying Tian
- Department of Medical Imaging, Jinling Hospital, Medical School of Nanjing University, Nanjing 210002, Jiangsu, PR China
| | - Xiang Liao
- Department of Medical Imaging, Jinling Hospital, Medical School of Nanjing University, Nanjing 210002, Jiangsu, PR China
| | - Yuxia Tang
- Department of Medical Imaging, Jinling Hospital, Medical School of Nanjing University, Nanjing 210002, Jiangsu, PR China
| | - Qianqian Ni
- Department of Medical Imaging, Jinling Hospital, Medical School of Nanjing University, Nanjing 210002, Jiangsu, PR China
| | - Jing Sun
- Department of Medical Imaging, Jinling Hospital, Medical School of Nanjing University, Nanjing 210002, Jiangsu, PR China
| | - Ying Zhao
- Department of Radiology, Nanjing First Hospital, Nanjing Medical University, Nanjing 210006, Jiangsu, PR China
| | - Junjie Zhang
- Key Laboratory for Organic Electronics and Information Displays, Jiangsu Key Laboratory for Biosensors, Institute of Advanced Materials, Jiangsu National Synergetic Innovation Centre for Advanced Materials, Nanjing University of Posts & Telecommunications, Nanjing 210023, Jiangsu, PR China
| | - Zhaogang Teng
- Key Laboratory for Organic Electronics and Information Displays, Jiangsu Key Laboratory for Biosensors, Institute of Advanced Materials, Jiangsu National Synergetic Innovation Centre for Advanced Materials, Nanjing University of Posts & Telecommunications, Nanjing 210023, Jiangsu, PR China; State Key Laboratory of Analytical Chemistry for Life Science, Nanjing University School of Chemistry and Chemical Engineering, Nanjing 210093, Jiangsu, PR China.
| | - Guangming Lu
- Department of Medical Imaging, Jinling Hospital, Medical School of Nanjing University, Nanjing 210002, Jiangsu, PR China.
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16
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Kesarwani V, Kelly HG, Shankar M, Robinson KJ, Kent SJ, Traven A, Corrie SR. Characterization of Key Bio-Nano Interactions between Organosilica Nanoparticles and Candida albicans. ACS Appl Mater Interfaces 2019; 11:34676-34687. [PMID: 31483991 DOI: 10.1021/acsami.9b10853] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Nanoparticle-cell interactions between silica nanomaterials and mammalian cells have been investigated extensively in the context of drug delivery, diagnostics, and imaging. While there are also opportunities for applications in infectious disease, the interactions of silica nanoparticles with pathogenic microbes are relatively underexplored. To bridge this knowledge gap, here, we investigate the effects of organosilica nanoparticles of different sizes, concentrations, and surface coatings on surface association and viability of the major human fungal pathogen Candida albicans. We show that uncoated and PEGylated organosilica nanoparticles associate with C. albicans in a size and concentration-dependent manner, but on their own, do not elicit antifungal activity. The particles are also shown to associate with human white blood cells, in a similar trend as observed with C. albicans, and remain noncytotoxic toward neutrophils. Smaller particles are shown to have low association with C. albicans in comparison to other sized particles and their association with blood cells was also observed to be minimal. We further demonstrate that by chemically immobilizing the clinically important echinocandin class antifungal drug, caspofungin, to PEGylated nanoparticles, the cell-material interaction changes from benign to antifungal, inhibiting C. albicans growth when provided in high local concentration on a surface. Our study provides the foundation for defining how organosilica particles could be tailored for clinical applications against C. albicans. Possible future developments include designing biomaterials that could detect, prevent, or treat bloodstream C. albicans infections, which at present have very high patient mortality.
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Affiliation(s)
- Vidhishri Kesarwani
- Department of Chemical Engineering and ARC Centre of Excellence in Convergent Bio-Nano Science and Technology , Monash University , Clayton , Victoria 3800 , Australia
- Infection and Immunity Program and the Department of Biochemistry and Molecular Biology, Biomedicine Discovery Institute , Monash University , Clayton , Victoria 3800 , Australia
| | - Hannah G Kelly
- Department of Microbiology and Immunology, Peter Doherty Institute for Infection and Immunity, and ARC Centre of Excellence in Convergent BioNano Science and Technology , The University of Melbourne , Melbourne , Victoria 3010 , Australia
| | - Madhu Shankar
- Infection and Immunity Program and the Department of Biochemistry and Molecular Biology, Biomedicine Discovery Institute , Monash University , Clayton , Victoria 3800 , Australia
| | - Kye J Robinson
- Department of Chemical Engineering and ARC Centre of Excellence in Convergent Bio-Nano Science and Technology , Monash University , Clayton , Victoria 3800 , Australia
| | - Stephen J Kent
- Department of Microbiology and Immunology, Peter Doherty Institute for Infection and Immunity, and ARC Centre of Excellence in Convergent BioNano Science and Technology , The University of Melbourne , Melbourne , Victoria 3010 , Australia
| | - Ana Traven
- Infection and Immunity Program and the Department of Biochemistry and Molecular Biology, Biomedicine Discovery Institute , Monash University , Clayton , Victoria 3800 , Australia
| | - Simon R Corrie
- Department of Chemical Engineering and ARC Centre of Excellence in Convergent Bio-Nano Science and Technology , Monash University , Clayton , Victoria 3800 , Australia
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17
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Shan L, Fan W, Wang W, Tang W, Yang Z, Wang Z, Liu Y, Shen Z, Dai Y, Cheng S, Jacobson O, Zhai K, Hu J, Ma Y, Kiesewetter DO, Gao G, Chen X. Organosilica-Based Hollow Mesoporous Bilirubin Nanoparticles for Antioxidation-Activated Self-Protection and Tumor-Specific Deoxygenation-Driven Synergistic Therapy. ACS Nano 2019; 13:8903-8916. [PMID: 31374171 DOI: 10.1021/acsnano.9b02477] [Citation(s) in RCA: 61] [Impact Index Per Article: 12.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
A major concern about glucose oxidase (GOx)-mediated cancer starvation therapy is its ability to induce serious oxidative damage to normal tissues through the massive production of H2O2 byproducts in the oxygen-involved glucose decomposition reaction, which may be addressed by using a H2O2 scavenger, known as an antioxidation agent. Surprisingly, H2O2 removal accelerates the aerobic glycometabolism of tumors by activating the H2O2-dependent "redox signaling" pathway of cancer cells. Simultaneous oxygen depletion further aggravates tumor hypoxia to increase the toxicity of a bioreductive prodrug, such as tirapazamine (TPZ), thereby improving the effectiveness of cancer starvation therapy and bioreductive chemotherapy. Herein, a "nitrogen-protected silica template" method is proposed to design a nanoantioxidant called an organosilica-based hollow mesoporous bilirubin nanoparticle (HMBRN), which can act as an excellent nanocarrier to codeliver GOx and TPZ. In addition to efficient removal of H2O2 for self-protection of normal tissues via antioxidation, GOx/TPZ-coloaded HMBRN can also rapidly deplete intratumoral glucose/oxygen to promote a synergistic starvation-enhanced bioreductive chemotherapeutic effect for the substantial suppression of solid tumor growth. Distinct from the simple combination of two treatments, this study introduces antioxidation-activated self-protection nanotechnology for the significant improvement of tumor-specific deoxygenation-driven synergistic treatment efficacy without additional external energy input, thus realizing the renaissance of precise endogenous cancer therapy with negligible side effects.
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Affiliation(s)
- Lingling Shan
- Institute of Pharmaceutical Biotechnology, School of Biology and Food Engineering , Suzhou University , Suzhou 234000 , China
- Laboratory of Molecular Imaging and Nanomedicine (LOMIN), National Institute of Biomedical Imaging and Bioengineering (NIBIB) , National Institutes of Health (NIH) , Bethesda , Maryland 20892 , United States
| | - Wenpei Fan
- Laboratory of Molecular Imaging and Nanomedicine (LOMIN), National Institute of Biomedical Imaging and Bioengineering (NIBIB) , National Institutes of Health (NIH) , Bethesda , Maryland 20892 , United States
| | - Weiwei Wang
- Institute of Pharmaceutical Biotechnology, School of Biology and Food Engineering , Suzhou University , Suzhou 234000 , China
| | - Wei Tang
- Laboratory of Molecular Imaging and Nanomedicine (LOMIN), National Institute of Biomedical Imaging and Bioengineering (NIBIB) , National Institutes of Health (NIH) , Bethesda , Maryland 20892 , United States
| | - Zhen Yang
- Laboratory of Molecular Imaging and Nanomedicine (LOMIN), National Institute of Biomedical Imaging and Bioengineering (NIBIB) , National Institutes of Health (NIH) , Bethesda , Maryland 20892 , United States
| | - Zhantong Wang
- Laboratory of Molecular Imaging and Nanomedicine (LOMIN), National Institute of Biomedical Imaging and Bioengineering (NIBIB) , National Institutes of Health (NIH) , Bethesda , Maryland 20892 , United States
| | - Yijing Liu
- Laboratory of Molecular Imaging and Nanomedicine (LOMIN), National Institute of Biomedical Imaging and Bioengineering (NIBIB) , National Institutes of Health (NIH) , Bethesda , Maryland 20892 , United States
| | - Zheyu Shen
- Laboratory of Molecular Imaging and Nanomedicine (LOMIN), National Institute of Biomedical Imaging and Bioengineering (NIBIB) , National Institutes of Health (NIH) , Bethesda , Maryland 20892 , United States
| | - Yunlu Dai
- Laboratory of Molecular Imaging and Nanomedicine (LOMIN), National Institute of Biomedical Imaging and Bioengineering (NIBIB) , National Institutes of Health (NIH) , Bethesda , Maryland 20892 , United States
| | - Siyuan Cheng
- Laboratory of Molecular Imaging and Nanomedicine (LOMIN), National Institute of Biomedical Imaging and Bioengineering (NIBIB) , National Institutes of Health (NIH) , Bethesda , Maryland 20892 , United States
| | - Orit Jacobson
- Laboratory of Molecular Imaging and Nanomedicine (LOMIN), National Institute of Biomedical Imaging and Bioengineering (NIBIB) , National Institutes of Health (NIH) , Bethesda , Maryland 20892 , United States
| | - Kefeng Zhai
- Institute of Pharmaceutical Biotechnology, School of Biology and Food Engineering , Suzhou University , Suzhou 234000 , China
| | - Junkai Hu
- Department of Chemistry & Biochemistry , University of Maryland , College Park , Maryland 20742 , United States
| | - Ying Ma
- Laboratory of Molecular Imaging and Nanomedicine (LOMIN), National Institute of Biomedical Imaging and Bioengineering (NIBIB) , National Institutes of Health (NIH) , Bethesda , Maryland 20892 , United States
| | - Dale O Kiesewetter
- Laboratory of Molecular Imaging and Nanomedicine (LOMIN), National Institute of Biomedical Imaging and Bioengineering (NIBIB) , National Institutes of Health (NIH) , Bethesda , Maryland 20892 , United States
| | - Guizhen Gao
- Institute of Pharmaceutical Biotechnology, School of Biology and Food Engineering , Suzhou University , Suzhou 234000 , China
| | - Xiaoyuan Chen
- Laboratory of Molecular Imaging and Nanomedicine (LOMIN), National Institute of Biomedical Imaging and Bioengineering (NIBIB) , National Institutes of Health (NIH) , Bethesda , Maryland 20892 , United States
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Juneja R, Lyles Z, Vadarevu H, Afonin KA, Vivero-Escoto JL. Multimodal Polysilsesquioxane Nanoparticles for Combinatorial Therapy and Gene Delivery in Triple-Negative Breast Cancer. ACS Appl Mater Interfaces 2019; 11:12308-12320. [PMID: 30844224 DOI: 10.1021/acsami.9b00704] [Citation(s) in RCA: 33] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Multifunctional hybrid nanoparticles are being developed to carry a wide variety of therapeutic and imaging agents for multiple biomedical applications. Polysilsesquioxane (PSilQ) nanoparticles are a promising hybrid platform with numerous advantages to be used as a delivery system. In this report, we demonstrate the ability of a stimuli-responsive PSilQ-based platform to transport and deliver simultaneously protoporphyrin IX, curcumin, and RNA interference inducers inside human cells. This multimodal delivery system shows a synergistic performance for the combined phototherapy and chemotherapy of triple-negative breast cancer and can be used for efficient transfection of therapeutic nucleic acids. The current work represents the first report of using the PSilQ platform for the combined phototherapy and chemotherapy and gene delivery.
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Kamada R, Kimura N, Yoshimura F, Tanino K, Sakaguchi K. Inhibition of lipid droplet formation by Ser/Thr protein phosphatase PPM1D inhibitor, SL-176. PLoS One 2019; 14:e0212682. [PMID: 30811466 PMCID: PMC6392468 DOI: 10.1371/journal.pone.0212682] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2018] [Accepted: 02/08/2019] [Indexed: 12/22/2022] Open
Abstract
Obesity is a worldwide public health problem, which is associated with various severe diseases including diabetes, hypertension, atherosclerosis, and cancer. Recent studies have revealed that combination treatment of several different compounds using low doses is effective to reduce side effects. Thus, there is a need to develop an efficient inhibitor for reducing lipid droplets with a divergent target/pathway. Ser/Thr protein phosphatase PPM1D is involved in cellular metabolic processes and is a promising target for anti-obesity treatment. We have previously developed a potent and specific PPM1D inhibitor, SL-176. In this study, we demonstrated that significant reduction of lipid droplet formation in adipocytes by the PPM1D specific inhibitor, SL-176. Using Oil-red O staining and fluorescent imaging of lipid droplet, we found that treatment of SL-176 significantly suppressed lipid droplet formation of 3T3-L1 cells both in amount and in size. SL-176 also repressed mRNA and protein expression of PPARγ and C/EBPα, adipogenic markers, at nontoxic conditions. Thus, SL-176 is a unique and potent inhibitor of lipid droplet formation that acts via PPM1D, a novel target toward inhibiting adipocyte differentiation.
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Affiliation(s)
- Rui Kamada
- Laboratory of Biological Chemistry, Department of Chemistry, Faculty of Science, Hokkaido University, Sapporo, Japan
| | - Nozomi Kimura
- Laboratory of Biological Chemistry, Department of Chemistry, Faculty of Science, Hokkaido University, Sapporo, Japan
| | - Fumihiko Yoshimura
- School of Pharmaceutical Sciences, University of Shizuoka, Shizuoka, Japan
| | - Keiji Tanino
- Laboratory of Organic Chemistry II, Department of Chemistry, Faculty of Science, Hokkaido University, Sapporo, Japan
| | - Kazuyasu Sakaguchi
- Laboratory of Biological Chemistry, Department of Chemistry, Faculty of Science, Hokkaido University, Sapporo, Japan
- * E-mail:
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20
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Li BX, Liu Y, Zhang P, Li XX, Pang XY, Zhao YH, Li H, Liu F, Lin J, Mu W. Selection of organosilicone surfactants for tank-mixed pesticides considering the balance between synergistic effects on pests and environmental risks. Chemosphere 2019; 217:591-598. [PMID: 30445404 DOI: 10.1016/j.chemosphere.2018.11.061] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/11/2018] [Revised: 11/08/2018] [Accepted: 11/09/2018] [Indexed: 06/09/2023]
Abstract
In this study, the bioactivities of binary mixtures of organosilicone surfactants and indoxacarb against two Lepidopteran pests were investigated along with their environmental risks. All of the tested organosilicone surfactants had obvious synergistic effects on the contact toxicity of indoxacarb against Spodoptera exigua and Agrotis ipsilon. However, all of the organosilicone surfactants exhibited certain antagonism for indoxacarb against S. exigua in terms of stomach & contact toxicity; both Silwet-408 and Silwet-806 exhibited additivity against A. ipsilon, whereas Silwet-618 and Silwet-DRS-60 exhibited synergism and slight antagonism, respectively. All of the tested chemicals were highly toxic to Daphnia magna, among which Silwet-DRS-60 had the lowest acute toxicity (EC50 of 94.91 μg/L). However, these chemicals were less toxic to Brachydanio rerio. Silwet-DRS-60 had a low toxicity to B. rerio, while Silwet-408, Silwet-806 and Silwet-618 were moderately toxic to B. rerio. For the joint toxicity evaluation of organosilicone surfactants and indoxacarb to D. magna and B. rerio, the additive index method, concentration addition method and toxicity unit method were robust in judging synergism or antagonism, whereas other methods were more conservative; the V-value method and equilibrium curve method exhibited high robustness and viability in evaluating the combined effects of binary mixtures. Overall, we should carefully select organosilicone surfactants for premixed or tank-mixed pesticides in agriculture to obtain a balance between synergistic effects on pests and environmental risks.
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Affiliation(s)
- Bei-Xing Li
- Research Center of Pesticide Environmental Toxicology, Shandong Agricultural University, Tai'an, 271018, China; Key Laboratory of Pesticide Toxicology & Application Technique, College of Plant Protection, Shandong Agricultural University, Tai'an, 271018, China
| | - Yang Liu
- Key Laboratory of Pesticide Toxicology & Application Technique, College of Plant Protection, Shandong Agricultural University, Tai'an, 271018, China
| | - Peng Zhang
- College of Environmental Science and Engineering, Nankai University, Tianjin, 300350, China
| | - Xiao-Xu Li
- Key Laboratory of Pesticide Toxicology & Application Technique, College of Plant Protection, Shandong Agricultural University, Tai'an, 271018, China
| | - Xiu-Yu Pang
- Department of Nutrition and Food Hygiene, College of Public Health, Harbin Medical University, 157 Baojian Road, Harbin, 150081, China
| | - Yun-He Zhao
- Key Laboratory of Pesticide Toxicology & Application Technique, College of Plant Protection, Shandong Agricultural University, Tai'an, 271018, China
| | - Hua Li
- Key Laboratory of Pesticide Toxicology & Application Technique, College of Plant Protection, Shandong Agricultural University, Tai'an, 271018, China; Zaozhuang No. 1 High School of Shandong Province, Zaozhuang, 277300, China
| | - Feng Liu
- Key Laboratory of Pesticide Toxicology & Application Technique, College of Plant Protection, Shandong Agricultural University, Tai'an, 271018, China
| | - Jin Lin
- Research Center of Pesticide Environmental Toxicology, Shandong Agricultural University, Tai'an, 271018, China; Key Laboratory of Pesticide Toxicology & Application Technique, College of Plant Protection, Shandong Agricultural University, Tai'an, 271018, China
| | - Wei Mu
- Research Center of Pesticide Environmental Toxicology, Shandong Agricultural University, Tai'an, 271018, China; Key Laboratory of Pesticide Toxicology & Application Technique, College of Plant Protection, Shandong Agricultural University, Tai'an, 271018, China.
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21
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Tang W, Fan W, Wang Z, Zhang W, Zhou S, Liu Y, Yang Z, Shao E, Zhang G, Jacobson O, Shan L, Tian R, Cheng S, Lin L, Dai Y, Shen Z, Niu G, Xie J, Chen X. Acidity/Reducibility Dual-Responsive Hollow Mesoporous Organosilica Nanoplatforms for Tumor-Specific Self-Assembly and Synergistic Therapy. ACS Nano 2018; 12:12269-12283. [PMID: 30418749 PMCID: PMC6506270 DOI: 10.1021/acsnano.8b06058] [Citation(s) in RCA: 66] [Impact Index Per Article: 11.0] [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: 05/04/2023]
Abstract
Featured with a large surface area, uniform interpenetrating mesopores, diverse organic framework hybridization, and well-defined surface properties, the hollow mesoporous organosilica nanoparticle (HMON) represents a promising paradigm in drug delivery systems with excellent biocompatibility. However, effective tumor accumulation and precise cancer theranostics of the HMON still remain a challenge. In this study, an "ammonia-assisted hot water etching" method is applied for the successful construction of sub-50 nm thioether/phenylene dual-hybridized HMON with low hemolytic effect. Particularly, the surface modification with Mo(VI)-based polyoxometalate (POM) clusters drives the self-assembly of HMON in the mild acidic tumor microenvironment (TME) to achieve enhanced tumor retention and accumulation. More importantly, the reducibility-activated Mo(VI)-to-Mo(V) conversion within POM not only endows the POM-anchored HMON with outstanding TME-responsive photoacoustic (PA) imaging contrast and photothermal therapy (PTT) performance but also plays an indispensable role in controllably triggering the decomposition of the Mn2(CO)10 payload for CO release, which gives rise to remarkable synergistic PTT-enhanced CO gas therapy for complete tumor eradication. By harnessing the unique acidic and redox properties of TME, the judiciously designed smart POM-anchored HMON nanoplatform is expected to act as a "magic bomb" to selectively destroy cancer without damaging normal tissues. This nanoplatform holds significant potential in realizing TME-responsive self-assembly for enhanced tumor accumulation and precise tumor-specific synergistic therapy, which is very promising for clinical translation.
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Affiliation(s)
- Wei Tang
- Laboratory of Molecular Imaging and Nanomedicine (LOMIN), National Institute of Biomedical Imaging and Bioengineering (NIBIB), National Institutes of Health (NIH), Bethesda, Maryland 20892, United States
| | - Wenpei Fan
- Laboratory of Molecular Imaging and Nanomedicine (LOMIN), National Institute of Biomedical Imaging and Bioengineering (NIBIB), National Institutes of Health (NIH), Bethesda, Maryland 20892, United States
| | - Zhantong Wang
- Laboratory of Molecular Imaging and Nanomedicine (LOMIN), National Institute of Biomedical Imaging and Bioengineering (NIBIB), National Institutes of Health (NIH), Bethesda, Maryland 20892, United States
| | - Weizhong Zhang
- Department of Chemistry, University of Georgia, Athens, Georgia 30602, United States
| | - Shiyi Zhou
- Department of Chemistry, University of Georgia, Athens, Georgia 30602, United States
| | - Yijing Liu
- Laboratory of Molecular Imaging and Nanomedicine (LOMIN), National Institute of Biomedical Imaging and Bioengineering (NIBIB), National Institutes of Health (NIH), Bethesda, Maryland 20892, United States
| | - Zhen Yang
- Laboratory of Molecular Imaging and Nanomedicine (LOMIN), National Institute of Biomedical Imaging and Bioengineering (NIBIB), National Institutes of Health (NIH), Bethesda, Maryland 20892, United States
| | - Emily Shao
- Laboratory of Molecular Imaging and Nanomedicine (LOMIN), National Institute of Biomedical Imaging and Bioengineering (NIBIB), National Institutes of Health (NIH), Bethesda, Maryland 20892, United States
| | - Guofeng Zhang
- Laboratory of Cellular Imaging and Macromolecular Biophysics, National Institute of Biomedical Imaging and Bioengineering (NIBIB), National Institutes of Health (NIH), Bethesda, Maryland 20892, United States
| | - Orit Jacobson
- Laboratory of Molecular Imaging and Nanomedicine (LOMIN), National Institute of Biomedical Imaging and Bioengineering (NIBIB), National Institutes of Health (NIH), Bethesda, Maryland 20892, United States
| | - Lingling Shan
- Laboratory of Molecular Imaging and Nanomedicine (LOMIN), National Institute of Biomedical Imaging and Bioengineering (NIBIB), National Institutes of Health (NIH), Bethesda, Maryland 20892, United States
| | - Rui Tian
- Laboratory of Molecular Imaging and Nanomedicine (LOMIN), National Institute of Biomedical Imaging and Bioengineering (NIBIB), National Institutes of Health (NIH), Bethesda, Maryland 20892, United States
| | - Siyuan Cheng
- Laboratory of Molecular Imaging and Nanomedicine (LOMIN), National Institute of Biomedical Imaging and Bioengineering (NIBIB), National Institutes of Health (NIH), Bethesda, Maryland 20892, United States
| | - Lisen Lin
- Laboratory of Molecular Imaging and Nanomedicine (LOMIN), National Institute of Biomedical Imaging and Bioengineering (NIBIB), National Institutes of Health (NIH), Bethesda, Maryland 20892, United States
| | - Yulun Dai
- Laboratory of Molecular Imaging and Nanomedicine (LOMIN), National Institute of Biomedical Imaging and Bioengineering (NIBIB), National Institutes of Health (NIH), Bethesda, Maryland 20892, United States
| | - Zheyu Shen
- Laboratory of Molecular Imaging and Nanomedicine (LOMIN), National Institute of Biomedical Imaging and Bioengineering (NIBIB), National Institutes of Health (NIH), Bethesda, Maryland 20892, United States
| | - Gang Niu
- Laboratory of Molecular Imaging and Nanomedicine (LOMIN), National Institute of Biomedical Imaging and Bioengineering (NIBIB), National Institutes of Health (NIH), Bethesda, Maryland 20892, United States
| | - Jin Xie
- Department of Chemistry, University of Georgia, Athens, Georgia 30602, United States
| | - Xiaoyuan Chen
- Laboratory of Molecular Imaging and Nanomedicine (LOMIN), National Institute of Biomedical Imaging and Bioengineering (NIBIB), National Institutes of Health (NIH), Bethesda, Maryland 20892, United States
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Wu J, Bremner DH, Niu S, Shi M, Wang H, Tang R, Zhu LM. Chemodrug-Gated Biodegradable Hollow Mesoporous Organosilica Nanotheranostics for Multimodal Imaging-Guided Low-Temperature Photothermal Therapy/Chemotherapy of Cancer. ACS Appl Mater Interfaces 2018; 10:42115-42126. [PMID: 30462492 DOI: 10.1021/acsami.8b16448] [Citation(s) in RCA: 62] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Noninvasive physical treatment with relatively low intensity stimulation and the development of highly efficient anticancer medical strategy are still desirable for cancer therapy. Herein a versatile, biodegradable, hollow mesoporous organosilica nanocapsule (HMONs) nanoplatform that is capped by the gemcitabine (Gem) molecule through a pH-sensitive acetal covalent bond is designed. The fabricated nanocapsule exhibits desirable small molecule release at the tumor tissues/cell sites and shows a reduced risk for drug accumulation. After loading indocyanine green (ICG), the heat-shock protein 90 (Hsp 90) inhibitor, and 17AAG and modification with polyethylene glycol (NH2-PEG), the resulting ICG-17AAG@HMONs-Gem-PEG exhibited a precisely controlled release of ICG and 17AAG and low-temperature photothermal therapy (PTT) (∼41 °C) with excellent tumor destruction efficacy. In addition, ICG loading conferred the nanoplatform with near-infrared fluorescence imaging (FL) and photoaccoustic (PA) imaging capability. In short, this work not only presents a smart drug self-controlled nanoplatform with pH-responsive payload release and theranostic performance but also provides an outstanding low-temperature PTT strategy, which is highly valid in the inhibition of cancer cells with minimal damage to the organism. Therefore, this research provides a paradigm that has a chemodrug-gated HMONs-based theranostic nanoplatform with intrinsic biodegradability, multimodal imaging capacity, high low-temperature PTT/chemotherapy efficacy, and reduced systemic toxicity.
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Affiliation(s)
- Jianrong Wu
- College of Chemistry, Chemical Engineering and Biotechnology , Donghua University , Shanghai , 201620 , P.R. China
| | - David H Bremner
- School of Science, Engineering and Technology , Kydd Building , Abertay University, Dundee DD1 1HG , Scotland , U.K
| | - Shiwei Niu
- College of Chemistry, Chemical Engineering and Biotechnology , Donghua University , Shanghai , 201620 , P.R. China
| | - Menghan Shi
- College of Chemistry, Chemical Engineering and Biotechnology , Donghua University , Shanghai , 201620 , P.R. China
| | - Haijun Wang
- College of Chemistry, Chemical Engineering and Biotechnology , Donghua University , Shanghai , 201620 , P.R. China
| | - Ranran Tang
- Women's Hospital of Nanjing Medical University , Nanjing Maternity and Child Health Care Hospital , Nanjing , 210004 , P.R. China
| | - Li-Min Zhu
- College of Chemistry, Chemical Engineering and Biotechnology , Donghua University , Shanghai , 201620 , P.R. China
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Etim IIN, Wei J, Dong J, Xu D, Chen N, Wei X, Su M, Ke W. Mitigation of the corrosion-causing Desulfovibrio desulfuricans biofilm using an organic silicon quaternary ammonium salt in alkaline media simulated concrete pore solutions. Biofouling 2018; 34:1121-1137. [PMID: 30732464 DOI: 10.1080/08927014.2018.1547377] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/10/2018] [Revised: 11/02/2018] [Accepted: 11/06/2018] [Indexed: 06/09/2023]
Abstract
Organic silicon quaternary ammonium salt (OSA), an environmentally friendly naturally occurring chemical, was used as a bacteriostatic agent against sulphate-reducing bacteria (SRB) on a 20SiMn steel surface in simulated concrete pore solutions (SCP). Four different media were used: No SRB (NSRB), No SRB and OSA (NSRB + OSA), With SRB (WSRB), With SRB and OSA (WSRB + OSA). After biofilm growth for 28 days, optimized sessile SRB cells survived at the high pH of 11.35 and as a result these cells caused the breakdown of the passive film due to the metabolic activities of the SRB. Corrosion prevention results showed that the OSA was effective in mitigating the growth of the sessile SRB cells and reduced corrosion in the SCP. These results were further confirmed by scanning electron microscope images, energy dispersive X-ray analysis, confocal-laser scanning microscopy, X-ray photoelectron spectroscopy and corrosion testing using electrochemical analysis.
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Affiliation(s)
- Ini-Ibehe Nabuk Etim
- a Environmental Corrosion Centre, Institute of Metal Research , Chinese Academy of Sciences , Shenyang , PR China
- b University of Chinese Academy of Sciences , Beijing , PR China
- c Department of Marine Biology , Akwa Ibom State University , Uyo , Nigeria
| | - Jie Wei
- a Environmental Corrosion Centre, Institute of Metal Research , Chinese Academy of Sciences , Shenyang , PR China
| | - Junhua Dong
- a Environmental Corrosion Centre, Institute of Metal Research , Chinese Academy of Sciences , Shenyang , PR China
| | - Dake Xu
- d School of Materials Science and Engineering , Northeastern University , Shenyang, PR China
| | - Nan Chen
- a Environmental Corrosion Centre, Institute of Metal Research , Chinese Academy of Sciences , Shenyang , PR China
| | - Xin Wei
- a Environmental Corrosion Centre, Institute of Metal Research , Chinese Academy of Sciences , Shenyang , PR China
| | - Mingzhong Su
- e Sani-care Salon Products, Inc. , Kennesaw , GA , USA
| | - Wei Ke
- a Environmental Corrosion Centre, Institute of Metal Research , Chinese Academy of Sciences , Shenyang , PR China
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Chen J, Shan J, Xu Y, Su P, Tong L, Yuwen L, Weng L, Bao B, Wang L. Polyhedral Oligomeric Silsesquioxane (POSS)-Based Cationic Conjugated Oligoelectrolyte/Porphyrin for Efficient Energy Transfer and Multiamplified Antimicrobial Activity. ACS Appl Mater Interfaces 2018; 10:34455-34463. [PMID: 30211531 DOI: 10.1021/acsami.8b09185] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Cationic quaternary ammonium (QA) groups and reactive oxygen species as two main approaches for antibacterial study have been intensively studied. Herein, we report a multifunctional antimicrobial agent (porphyrin-POSS-OPVE, PPO), which combines bacterial membrane intercalation, high density of local QA groups, efficient energy transfer, significantly reduced aggregation, and high water solubility into one single molecule. The light-harvesting PPO contains multiple donor-absorbing arms (oligo( p-phenylenevinylene) electrolytes, OPVEs) on its globular periphery and a central porphyrin acceptor in the core by using three-dimensional nanocages (polyhedral oligomeric silsesquioxanes, POSSs) as bridges. The antiaggregation ability of POSS and the highly efficient energy transfer from multiple OPVE arms to porphyrin could greatly amplify singlet oxygen generation in PPO. Particularly, OPVEs with QA terminal chains were able to intercalate into Escherichia coli membranes, which facilitated 1O2 diffusion and bacterial cell membrane disintegration by QA groups. The increased local cationic QA charges in OPVE arms can also enhance the biocidal activity of PPO. Benefiting from these satisfactory features, PPO exhibits multiamplified antibacterial efficacy under a very low concentration level and white light dose (400-700 nm, 6 mW·cm-2, 5 min, 1.8 J·cm-2) to Escherichia coli (8 μM) and Staphylococcus aureus (500 nM). Therefore, PPO shows great potential for photodynamic antimicrobial chemotherapy at a much lower irradiation light dose and photosensitizer concentration level compared to previous reports.
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Affiliation(s)
- Jia Chen
- Key Laboratory for Organic Electronics and Information Displays (KLOEID), Jiangsu Key Laboratory for Biosensors, Institute of Advanced Materials (IAM), Jiangsu National Synergistic Innovation Center for Advanced Materials (SICAM) , Nanjing University of Posts and Telecommunications , Nanjing 210023 , Jiangsu , China
| | - Jingyang Shan
- Key Laboratory for Organic Electronics and Information Displays (KLOEID), Jiangsu Key Laboratory for Biosensors, Institute of Advanced Materials (IAM), Jiangsu National Synergistic Innovation Center for Advanced Materials (SICAM) , Nanjing University of Posts and Telecommunications , Nanjing 210023 , Jiangsu , China
| | - Yu Xu
- Key Laboratory for Organic Electronics and Information Displays (KLOEID), Jiangsu Key Laboratory for Biosensors, Institute of Advanced Materials (IAM), Jiangsu National Synergistic Innovation Center for Advanced Materials (SICAM) , Nanjing University of Posts and Telecommunications , Nanjing 210023 , Jiangsu , China
| | - Peng Su
- Key Laboratory for Organic Electronics and Information Displays (KLOEID), Jiangsu Key Laboratory for Biosensors, Institute of Advanced Materials (IAM), Jiangsu National Synergistic Innovation Center for Advanced Materials (SICAM) , Nanjing University of Posts and Telecommunications , Nanjing 210023 , Jiangsu , China
| | - Li Tong
- Key Laboratory for Organic Electronics and Information Displays (KLOEID), Jiangsu Key Laboratory for Biosensors, Institute of Advanced Materials (IAM), Jiangsu National Synergistic Innovation Center for Advanced Materials (SICAM) , Nanjing University of Posts and Telecommunications , Nanjing 210023 , Jiangsu , China
| | - Lihui Yuwen
- Key Laboratory for Organic Electronics and Information Displays (KLOEID), Jiangsu Key Laboratory for Biosensors, Institute of Advanced Materials (IAM), Jiangsu National Synergistic Innovation Center for Advanced Materials (SICAM) , Nanjing University of Posts and Telecommunications , Nanjing 210023 , Jiangsu , China
| | - Lixing Weng
- Key Laboratory for Organic Electronics and Information Displays (KLOEID), Jiangsu Key Laboratory for Biosensors, Institute of Advanced Materials (IAM), Jiangsu National Synergistic Innovation Center for Advanced Materials (SICAM) , Nanjing University of Posts and Telecommunications , Nanjing 210023 , Jiangsu , China
| | - Biqing Bao
- Key Laboratory for Organic Electronics and Information Displays (KLOEID), Jiangsu Key Laboratory for Biosensors, Institute of Advanced Materials (IAM), Jiangsu National Synergistic Innovation Center for Advanced Materials (SICAM) , Nanjing University of Posts and Telecommunications , Nanjing 210023 , Jiangsu , China
| | - Lianhui Wang
- Key Laboratory for Organic Electronics and Information Displays (KLOEID), Jiangsu Key Laboratory for Biosensors, Institute of Advanced Materials (IAM), Jiangsu National Synergistic Innovation Center for Advanced Materials (SICAM) , Nanjing University of Posts and Telecommunications , Nanjing 210023 , Jiangsu , China
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Singh G, Sharma G, Kalra P, Batish DR, Verma V. Role of alkyl silatranes as plant growth regulators: comparative substitution effect on root and shoot development of wheat and maize. J Sci Food Agric 2018; 98:5129-5133. [PMID: 29635793 DOI: 10.1002/jsfa.9052] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/24/2018] [Revised: 03/28/2018] [Accepted: 04/02/2018] [Indexed: 06/08/2023]
Abstract
BACKGROUND The present investigation reports the stimulating effects of different substituted alkyl silatranes (3a-3e) on the early seedling growth of wheat (Triticum aestivum) and maize (Zea mays). Seeds of these plants were exposed to six different concentrations (0, 10, 50, 100, 200 and 500 µmol L-1 ). The results revealed that different substitutions (3a-3e) had different effects on root and shoot elongation. Silatranes (3a-3e) were synthesized employing microwave irradiation by a solvent-mediated transesterification reaction, thereby reducing reaction times from several hours under conventional reflux conditions to 15 min under microwave irradiation. RESULTS It was of interest that the effect of these silatranes did not show a dose-dependent relationship but an optimum concentration, which was 100 µmol L-1 for maize and 200 µmol L-1 for wheat. γ-Aminopropyl silatranes (3b and 3e) gave the best results in maize, whereas γ-chloropropyl silatrane (3a) was most efficient for wheat at these optimum concentrations. CONCLUSION All the synthesized silatranes were effective in promoting root and shoot growth of wheat and maize. Furthermore, an efficient green microwave methodology was successful for the synthesis of silatranes. These observations pave the way for silatranes as efficient plant growth regulators for crops. © 2018 Society of Chemical Industry.
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Affiliation(s)
| | - Geetika Sharma
- Department of Chemistry, Panjab University, Chandigarh, India
| | - Pooja Kalra
- Department of Chemistry, Panjab University, Chandigarh, India
| | - Daizy R Batish
- Department of Botany, Panjab University, Chandigarh, India
| | - Vikas Verma
- Guru Jambheshwar University of Science and Technology, Hisar, India
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Sarı C, Eyüpoğlu FC, Değirmencioğlu İ, Bayrak R. Synthesis of axially disubstituted silicon phthalocyanines and investigation of photodynamic effects on HCT-116 colorectal cancer cell line. Photodiagnosis Photodyn Ther 2018; 23:83-88. [PMID: 29775760 DOI: 10.1016/j.pdpdt.2018.05.009] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2018] [Revised: 04/11/2018] [Accepted: 05/14/2018] [Indexed: 11/18/2022]
Abstract
Photodynamic therapy is one of the hot topics in cancer studies. Photosensitizing chemical substrates are stimulated by light having a specific wavelength to cause fatal effect on different kinds of targets. In this study, axially 4-{[(1E)-2-furylmethylene]amino}phenol, 4-{[(1E)-2-thienylmethylene]amino}phenol and 4-{[(1E)-(4-nitro-2-thienyl)methylene]amino}phenol disubstituted silicon phthalocyanines were synthesized as Photosensitizers for photodynamic therapy in cancer treatment. The structural characterizations of these novel compounds were performed by a combination of FT-IR, 1H-NMR, UV-vis and mass. All these newly prepared compounds did not show aggregation at the concentration range of 2 × 10-6-12 × 10-6 M in tetrahydrofurane and also did not show aggregation in different organic solvents at 2 × 10-6 M concentration. Phthalocyanines synthesized in this study were tested on HCT-116 colorectal cancer cells and stimulated by light has wavelength of 680 nm. The toxic effects on cancer cells which are caused by different concentrations of photosensitizing molecules have been examined and compared with the toxic effects on cancer cells that were kept in the dark. It is confirmed that these molecules caused toxic effects on colorectal cancer cells when they were stimulated by light but there was no toxic effect in the dark.
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Affiliation(s)
- Ceren Sarı
- Karadeniz Technical University, Institute of Health Sciences, Department of Medical Biology, Trabzon, Turkey
| | - Figen Celep Eyüpoğlu
- Karadeniz Technical University, Faculty of Medicine, Department of Medical Biology, Trabzon, Turkey.
| | - İsmail Değirmencioğlu
- Karadeniz Technical University, Faculty of Science, Department of Chemistry, Trabzon, Turkey.
| | - Rıza Bayrak
- Sinop University, Vocational School of Health Services, Department of Medical Laboratory Techniques, Sinop, Turkey
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Rolando CA, Gaskin RE, Gous SF, Horgan DB, Raymond LG. The Effect of Formulation, Dose, and Adjuvants on Uptake of Phosphite Into Pine Foliage. Plant Dis 2017; 101:1652-1658. [PMID: 30677337 DOI: 10.1094/pdis-04-17-0553-re] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
The aim of this investigation was to determine the effect of dose and adjuvant on uptake of two phosphite products (Phos-A and Phos-B) into Pinus radiata needles. In experiment 1, uptake of 6 kg ha-1 phosphite, applied as Phos-A, in 100 liters of water, together with an organosilicone superspreader (0.2%), was high (>60%). Uptake at doses greater than 6 kg ha-1 (12, 15, 18, and 24 kg ha-1) and applied in volumes less than 100 liters of water (75 and 50 liters) was poor (1 to 30%). Using stability tests and NMR spectroscopy in experiment 2, this appeared to be linked to a concentration dependent reaction resulting in the degradation of the organosilicone adjuvant that facilitated uptake of Phos-A. In experiment 3, uptake of phosphite applied as Phos-B, between 6 and 24 kg ha-1 in 100 liters of water, was tested alone and with four adjuvants (an organosilicone, alcohol ethoxylate, lecithin, and esterified seed oil). Uptake of Phos-B without any adjuvant was high (>50%) across all doses, indicating the formulation was optimized for P. radiata needles. Uptake of Phos-B increased with concentration up to 72% at 24 kg ha-1 in 100 liters of water. Symptoms of phytotoxicity were observed at rates of ≥12 kg ha-1. This study highlighted the effect of formulation, dose, concentration, and adjuvant on the uptake of phosphite into P. radiata needles.
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Murray J, Muruko T, Gill CIR, Kearney MP, Farren D, Scott MG, McMullan G, Ternan NG. Evaluation of bactericidal and anti-biofilm properties of a novel surface-active organosilane biocide against healthcare associated pathogens and Pseudomonas aeruginosa biolfilm. PLoS One 2017; 12:e0182624. [PMID: 28787014 PMCID: PMC5546580 DOI: 10.1371/journal.pone.0182624] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2016] [Accepted: 07/21/2017] [Indexed: 11/18/2022] Open
Abstract
Healthcare acquired infections (HAI) pose a great threat in hospital settings and environmental contamination can be attributed to the spread of these. De-contamination and, significantly, prevention of re-contamination of the environment could help in preventing/reducing this threat. Goldshield (GS5) is a novel organosilane biocide marketed as a single application product with residual biocidal activity. We tested the hypothesis that GS5 could provide longer-term residual antimicrobial activity than existing disinfectants once applied to surfaces. Thus, the residual bactericidal properties of GS5, Actichlor and Distel against repeated challenge with Staphylococcus aureus ATCC43300 were tested, and showed that GS5 alone exhibited longer-term bactericidal activity for up to 6 days on 316I stainless steel surfaces. Having established efficacy against S. aureus, we tested GS5 against common healthcare acquired pathogens, and demonstrated that, on average, a 1 log10 bactericidal effect was exhibited by GS5 treated surfaces, although biocidal activity varied depending upon the surface type and the species of bacteria. The ability of GS5 to prevent Pseudomonas aeruginosa biofilm formation was measured in standard microtitre plate assays, where it had no significant effect on either biofilm formation or development. Taken together the data suggests that GS5 treatment of surfaces may be a useful means to reducing bacterial contamination in the context of infection control practices.
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Affiliation(s)
- Jason Murray
- Nutrition Innovation Centre for food and HEalth (NICHE), School of Biomedical Sciences, University of Ulster, Coleraine, Co. Londonderry, Northern Ireland, United Kingdom
| | - Tendai Muruko
- Nutrition Innovation Centre for food and HEalth (NICHE), School of Biomedical Sciences, University of Ulster, Coleraine, Co. Londonderry, Northern Ireland, United Kingdom
| | - Chris I. R. Gill
- Nutrition Innovation Centre for food and HEalth (NICHE), School of Biomedical Sciences, University of Ulster, Coleraine, Co. Londonderry, Northern Ireland, United Kingdom
| | - M. Patricia Kearney
- Northern Health and Social Care Trust, Antrim area Hospital, Bush House, Antrim, Co. Antrim, Northern Ireland, United Kingdom
| | - David Farren
- Northern Health and Social Care Trust, Antrim area Hospital, Bush House, Antrim, Co. Antrim, Northern Ireland, United Kingdom
| | - Michael G. Scott
- Northern Health and Social Care Trust, Antrim area Hospital, Bush House, Antrim, Co. Antrim, Northern Ireland, United Kingdom
| | - Geoff McMullan
- Institute for Global Food Security, School of Biological Sciences, Medical Biology Centre, Queens University Belfast, Belfast, Northern Ireland, United Kingdom
| | - Nigel G. Ternan
- Nutrition Innovation Centre for food and HEalth (NICHE), School of Biomedical Sciences, University of Ulster, Coleraine, Co. Londonderry, Northern Ireland, United Kingdom
- * E-mail:
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Ceña-Diez R, García-Broncano P, Javier de la Mata F, Gómez R, Resino S, Muñoz-Fernández M. G2-S16 dendrimer as a candidate for a microbicide to prevent HIV-1 infection in women. Nanoscale 2017; 9:9732-9742. [PMID: 28675217 DOI: 10.1039/c7nr03034g] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Unprotected heterosexual intercourse is the first route for sustaining the global spread of human immunodeficiency virus type 1 (HIV-1), being responsible for 80% of new HIV-1 infections in the world. The presence of inflammation in the female reproductive tract and the presence of semen increases the risk of heterosexual HIV-1 transmission. This state-of-the-art research based on an innovative nanotechnology design was focused on a toxicological study of the limitation of the activity of the novel H2O-soluble anionic carbosilane dendrimer G2-S16 in the adult cervical and foreskin epithelia. The G2-S16 dendrimer did not cause any irritation or inflammation in the vaginal epithelium, proving that this dendrimer is a safe nanocompound for vaginal application to control viral transmission. It was shown that no significant differences were found in mortality, sublethal or teratogenic effects when the zebra fish embryos were treated with G2-S16. In short, G2-S16 seems to be an ideal candidate for the development of a topical microbicide against HIV-1 infection and the next step is try in clinical trials, because of its great in vivo biocompatibility, as well as its ability to halt HIV-1 infection in the presence of semen.
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Affiliation(s)
- Rafael Ceña-Diez
- Section Immunology and Laboratorio Inmuno Biología Molecular, Hospital General Universitario Gregorio Marañón (HGUGM), Madrid, Spain
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Hong GW, Ramesh S, Kim JH, Kim HJ, Lee HS. Synthesis and Properties of Cellulose-Functionalized POSS-SiO2/TiO2 Hybrid Composites. J Nanosci Nanotechnol 2015; 15:8048-8054. [PMID: 26726461 DOI: 10.1166/jnn.2015.11237] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
The mechanical, thermal, optical, electrical and morphological properties of cellulose, an excellent natural biomaterial, can be improved by organic-inorganic hybrid composite methods. Based on the pristine properties of cellulose, the preparation of cellulose-metal oxide hybrid nanocomposites using a dispersion process of nanoparticles into the cellulose host matrix by traditional methods, has limitations. Recently, the functionalized cellulose-polymer-based materials were considered to be an important class of high-performance materials, providing the synthesis of various functional hybrid nanocomposites using a sol-gel method. Transparent cellulose-POSS-amine-silica/titania hybrids were prepared by an in-situ sol-gel process in the presence of γ-aminopropyltrimethoxylsilane (γ-APTES). The methodology involves the formation of covalent bonding between the cellulose-POSS amine and SiO2/TiO2 hybrid nanocomposite material. An analysis of the synthesized hybrid material by Fourier transform infrared spectroscopy, X-ray diffraction, thermogravimetric analysis, differential thermal calorimetry, scanning electron microscopy, and transmission electron microscopy indicated that the silica/titania nanoparticles were bonded covalently and dispersed uniformly into the cellulose-POSS amine matrix. In addition, biological properties of the cellulose-POSS-silica/titania hybrid material were examined using an antimicrobial test against pathogenic bacteria, such as Bacillus cereus (F481072) and E. coli (ATCC35150) for the bacterial effect.
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Dimaano ML, Rozario C, Nerandzic MM, Donskey CJ, Lam M, Baron ED. The photodynamic antibacterial effects of silicon phthalocyanine (Pc) 4. Int J Mol Sci 2015; 16:7851-60. [PMID: 25856680 PMCID: PMC4425053 DOI: 10.3390/ijms16047851] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2015] [Revised: 03/12/2015] [Accepted: 03/26/2015] [Indexed: 12/13/2022] Open
Abstract
The emergence of antibiotic-resistant strains in facultative anaerobic Gram-positive coccal bacteria, such as methicillin-resistant Staphylococcus aureus (MRSA), is a global health issue. Typically, MRSA strains are found associated with institutions like hospitals but recent data suggest that they are becoming more prevalent in community-acquired infections. It is thought that the incidence and prevalence of bacterial infections will continue to increase as (a) more frequent use of broad-spectrum antibiotics and immunosuppressive medications; (b) increased number of invasive medical procedures; and (c) higher incidence of neutropenia and HIV infections. Therefore, more optimal treatments, such as photodynamic therapy (PDT), are warranted. PDT requires the interaction of light, a photosensitizing agent, and molecular oxygen to induce cytotoxic effects. In this study, we investigated the efficacy and characterized the mechanism of cytotoxicity induced by photodynamic therapy sensitized by silicon phthalocyanine (Pc) 4 on (a) methicillin-sensitive Staphylococcus aureus (MSSA) (ATCC 25923); (b) community acquired methicillin-resistant Staphylococcus aureus (CA-MRSA) (ATCC 43300); and (c) hospital acquired methicillin-resistant Staphylococcus aureus (HA-MRSA) (PFGE type 300). Our data include confocal image analysis, which confirmed that Pc 4 is taken up by all S. aureus strains, and viable cell recovery assay, which showed that concentrations as low as 1.0 μM Pc 4 incubated for 3 h at 37 °C followed by light at 2.0 J/cm2 can reduce cell survival by 2-5 logs. These results are encouraging, but before PDT can be utilized as an alternative treatment for eradicating resistant strains, we must first characterize the mechanism of cell death that Pc 4-based PDT employs in eliminating these pathogens.
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Affiliation(s)
- Matthew L Dimaano
- Department of Dermatology, Case Western Reserve University, Cleveland, OH 44106, USA.
| | - Chantal Rozario
- Department of Dermatology, Case Western Reserve University, Cleveland, OH 44106, USA.
| | - Michelle M Nerandzic
- Research Service, Geriatric Research Education and Clinical Center, Cleveland Veterans Affairs Medical Center, Cleveland, OH 44106, USA.
| | - Curtis J Donskey
- Research Service, Geriatric Research Education and Clinical Center, Cleveland Veterans Affairs Medical Center, Cleveland, OH 44106, USA.
| | - Minh Lam
- Department of Dermatology, Case Western Reserve University, Cleveland, OH 44106, USA.
| | - Elma D Baron
- Department of Dermatology, Case Western Reserve University, Cleveland, OH 44106, USA.
- Department of Dermatology, Cleveland Veterans Affairs Medical Center, Cleveland, OH 44106, USA.
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Jugdaohsingh R, Watson AIE, Bhattacharya P, van Lenthe GH, Powell JJ. Positive association between serum silicon levels and bone mineral density in female rats following oral silicon supplementation with monomethylsilanetriol. Osteoporos Int 2015; 26:1405-15. [PMID: 25572052 PMCID: PMC4357649 DOI: 10.1007/s00198-014-3016-7] [Citation(s) in RCA: 16] [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] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/26/2014] [Accepted: 12/19/2014] [Indexed: 12/31/2022]
Abstract
UNLABELLED Observational (epidemiological) studies suggest the positive association between dietary silicon intake and bone mineral density may be mediated by circulating estradiol level. Here, we report the results of a silicon supplementation study in rats that strongly support these observations and suggest an interaction between silicon and estradiol. INTRODUCTION Epidemiological studies report strong positive associations between dietary silicon (Si) intake and bone mineral density (BMD) in premenopausal women and indicate that the association may be mediated by estradiol. We have tested this possibility in a mixed-gender rodent intervention study. METHODS Tissue samples were obtained from three groups of 20-week-old Sprague Dawley rats (five males and five females per group) that had been supplemented ad libitum for 90 days in their drinking water with (i) <0.1 mg Si/L (vehicle control), (ii) 115 mg Si/L (moderate dose) or (iii) 575 mg Si/L (high dose). All rats received conventional laboratory feed, whilst supplemental Si was in the form of monomethylsilanetriol, increasing dietary Si intakes by 18 and 99 %, for the moderate- and high-dose groups, respectively. RESULTS Fasting serum and tissue Si concentrations were increased with Si supplementation (p < 0.05), regardless of gender. However, only for female rats was there (i) a trend for a dose-responsive increase in serum osteocalcin concentration with Si intervention and (ii) strong significant associations between serum Si concentrations and measures of bone quality (p < 0.01). Correlations were weaker or insignificant for tibia Si levels and absent for other serum or tibia elemental concentrations and bone quality measures. CONCLUSIONS Our findings support the epidemiological observations that dietary Si positively impacts BMD in younger females, and this may be due to a Si-estradiol interaction. Moreover, these data suggest that the Si effect is mediated systemically, rather than through its incorporation into bone.
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Affiliation(s)
- R Jugdaohsingh
- Elsie Widdowson Laboratory, MRC Human Nutrition Research, Fulbourn Road, Cambridge, CB1 9NL, UK,
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Perisé-Barrios AJ, Gómez R, Corbí AL, de la Mata J, Domínguez-Soto A, Muñoz-Fernandez MA. Use of carbosilane dendrimer to switch macrophage polarization for the acquisition of antitumor functions. Nanoscale 2015; 7:3857-3866. [PMID: 25254497 DOI: 10.1039/c4nr04038d] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Tumor microenvironment favors the escape from immunosurveillance by promoting immunosuppression and blunting pro-inflammatory responses. Since most tumor-associated macrophages (TAM) exhibit an M2-like tumor cell growth promoting polarization, we have studied the role of 2G-03NN24 carbosilane dendrimer in M2 macrophage polarization to evaluate the potential application of dendrimers in tumor immunotherapy. We found that the 2G-03NN24 dendrimer decreases LPS-induced IL-10 production from in vitro generated monocyte-derived M2 macrophages, and also switches their gene expression profile towards the acquisition of M1 polarization markers (INHBA, SERPINE1, FLT1, EGLN3 and ALDH1A2) and the loss of M2 polarization-associated markers (EMR1, IGF1, FOLR2 and SLC40A1). Furthermore, 2G-03NN24 dendrimer decreases STAT3 activation. Our results indicate that the 2G-03NN24 dendrimer can be a useful tool for antitumor therapy by virtue of its potential ability to limit the M2-like polarization of TAM.
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Affiliation(s)
- Ana J Perisé-Barrios
- Laboratorio Inmuno-Biología Molecular, Hospital General Universitario Gregorio Marañón and Instituto de Investigación Sanitaria Gregorio Marañón, 28007 Madrid, Spain.
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Taratula O, Schumann C, Duong T, Taylor KL, Taratula O. Dendrimer-encapsulated naphthalocyanine as a single agent-based theranostic nanoplatform for near-infrared fluorescence imaging and combinatorial anticancer phototherapy. Nanoscale 2015; 7:3888-3902. [PMID: 25422147 DOI: 10.1039/c4nr06050d] [Citation(s) in RCA: 89] [Impact Index Per Article: 9.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Multifunctional theranostic platforms capable of concurrent near-infrared (NIR) fluorescence imaging and phototherapies are strongly desired for cancer diagnosis and treatment. However, the integration of separate imaging and therapeutic components into nanocarriers results in complex theranostic systems with limited translational potential. A single agent-based theranostic nanoplatform, therefore, was developed for concurrent NIR fluorescence imaging and combinatorial phototherapy with dual photodynamic (PDT) and photothermal (PTT) therapeutic mechanisms. The transformation of a substituted silicon naphthalocyanine (SiNc) into a biocompatible nanoplatform (SiNc-NP) was achieved by SiNc encapsulation into the hydrophobic interior of a generation 5 polypropylenimine dendrimer following surface modification with polyethylene glycol. Encapsulation provides aqueous solubility to SiNc and preserves its NIR fluorescence, PDT and PTT properties. Moreover, an impressive photostability in the dendrimer-encapsulated SiNc has been detected. Under NIR irradiation (785 nm, 1.3 W cm(-2)), SiNc-NP manifested robust heat generation capability (ΔT = 40 °C) and efficiently produced reactive oxygen species essential for PTT and PDT, respectively, without releasing SiNc from the nanopaltform. By varying the laser power density from 0.3 W cm(-2) to 1.3 W cm(-2) the therapeutic mechanism of SiNc-NP could be switched from PDT to combinatorial PDT-PTT treatment. In vitro and in vivo studies confirmed that phototherapy mediated by SiNc can efficiently destroy chemotherapy resistant ovarian cancer cells. Remarkably, solid tumors treated with a single dose of SiNc-NP combined with NIR irradiation were completely eradicated without cancer recurrence. Finally, the efficiency of SiNc-NP as an NIR imaging agent was confirmed by recording the strong fluorescence signal in the tumor, which was not photobleached during the phototherapeutic procedure.
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Affiliation(s)
- Olena Taratula
- Department of Pharmaceutical Sciences, College of Pharmacy, Oregon State University, Corvallis, Oregon 97331, USA.
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Zaltariov MF, Vlad A, Cazacu M, Avadanei M, Vornicu N, Balan M, Shova S. Silicon-containing bis-azomethines: synthesis, structural characterization, evaluation of the photophysical properties and biological activity. Spectrochim Acta A Mol Biomol Spectrosc 2015; 138:38-48. [PMID: 25437843 DOI: 10.1016/j.saa.2014.11.007] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/25/2014] [Revised: 10/23/2014] [Accepted: 11/05/2014] [Indexed: 06/04/2023]
Abstract
A new diamine, (dimethylsilanediyl)bis(methylene)bis(4-aminobenzoate) (1), containing dimethylsilane spacer, was prepared by the condensation of p-aminobenzoic acid with bis(chloromethyl)dimethylsilane. This was subsequently reacted with salicylaldehyde, 3-hydroxy-salicylaldehyde, and 3-methoxy-salicyladehyde, when corresponding Schiff bases (E)-(dimethylsilanediyl)bis(methylene)bis(4-((E)-(2-hydroxybenzilidene)amino)benzoate (2), (E)-(dimethylsilanediyl)bis(methylene)bis(4-((E)-(2-hydroxybenzilidene)amino)benzoate (3), and (E)-(dimethylsilanediyl)bis(methylene) bis(4-((E)-(2-hydroxy-3-methoxybenzilidene)amino)benzoate (4), respectively were formed. All the obtained compounds were structurally characterized by spectral (FT-IR, (1)HNMR, (13)CNMR) analyses and single crystal X-ray diffraction. Photophysical studies revealed that the new prepared Schiff bases are good UV light absorbing and fluorescent materials. Thus, they exhibit strong UV/Vis-absorption at 250-400nm and violet or orange emission, in sensitive dependence on the polarity of the solvents and the nature of the substituent (H, OH and OCH3) at the aromatic ring. The antimicrobial activity of these compounds was first studied in vitro by the disk diffusion assay against two species of bacteria and three fungi. The minimum inhibitory concentration was then determined with the reference of standard compounds. The results displayed that Schiff bases 3 and 4 having hydroxy- and methoxy-substituents on the aromatic ring were better inhibitors of both types of species (bacteria and fungi) than standard compounds, Caspofungin and Kanamycin.
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Affiliation(s)
| | - Angelica Vlad
- "Petru Poni" Institute of Macromolecular Chemistry, Aleea Gr. Ghica Voda 41A, 700487 Iaşi, Romania
| | - Maria Cazacu
- "Petru Poni" Institute of Macromolecular Chemistry, Aleea Gr. Ghica Voda 41A, 700487 Iaşi, Romania.
| | - Mihaela Avadanei
- "Petru Poni" Institute of Macromolecular Chemistry, Aleea Gr. Ghica Voda 41A, 700487 Iaşi, Romania
| | - Nicoleta Vornicu
- Metropolitan Center of Research TABOR, The Metropolitanate of Moldavia and Bukovina, Closca 9, 700066 Iaşi, Romania
| | - Mihaela Balan
- "Petru Poni" Institute of Macromolecular Chemistry, Aleea Gr. Ghica Voda 41A, 700487 Iaşi, Romania
| | - Sergiu Shova
- "Petru Poni" Institute of Macromolecular Chemistry, Aleea Gr. Ghica Voda 41A, 700487 Iaşi, Romania
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Boppana NB, Stochaj U, Kodiha M, Bielawska A, Bielawski J, Pierce JS, Korbelik M, Separovic D. C6-pyridinium ceramide sensitizes SCC17B human head and neck squamous cell carcinoma cells to photodynamic therapy. J Photochem Photobiol B 2015; 143:163-8. [PMID: 25635908 DOI: 10.1016/j.jphotobiol.2015.01.001] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/01/2014] [Revised: 01/02/2015] [Accepted: 01/03/2015] [Indexed: 11/17/2022]
Abstract
Combining photodynamic therapy (PDT) with another anticancer treatment modality is an important strategy for improved efficacy. PDT with Pc4, a silicon phthalocyanine photosensitizer, was combined with C6-pyridinium ceramide (LCL29) to determine their potential to promote death of SCC17B human head and neck squamous cell carcinoma cells. PDT+LCL29-induced enhanced cell death was inhibited by zVAD-fmk, a pan-caspase inhibitor, and fumonisin B1 (FB), a ceramide synthase inhibitor. Quantitative confocal microscopy showed that combining PDT with LCL29 enhanced FB-sensitive ceramide accumulation in the mitochondria. Furthermore, PDT+LCL29 induced enhanced FB-sensitive redistribution of cytochrome c and caspase-3 activation. Overall, the data indicate that PDT+LCL29 enhanced cell death via FB-sensitive, mitochondrial ceramide accumulation and apoptosis.
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Affiliation(s)
- Nithin B Boppana
- Department of Pharmaceutical Sciences, Eugene Applebaum College of Pharmacy and Health Sciences, Wayne State University, 259 Mack Ave., Detroit, MI 48201, USA
| | - Ursula Stochaj
- Department of Physiology, McGill University, 3655 Promenade Sir William Osler, Montreal, QC H3G 1YC, Canada
| | - Mohamed Kodiha
- Department of Physiology, McGill University, 3655 Promenade Sir William Osler, Montreal, QC H3G 1YC, Canada
| | - Alicja Bielawska
- Department of Biochemistry and Molecular Biology, Medical University of South Carolina, 173 Ashley Ave., Charleston, SC 29425, USA
| | - Jacek Bielawski
- Department of Biochemistry and Molecular Biology, Medical University of South Carolina, 173 Ashley Ave., Charleston, SC 29425, USA
| | - Jason S Pierce
- Department of Biochemistry and Molecular Biology, Medical University of South Carolina, 173 Ashley Ave., Charleston, SC 29425, USA
| | - Mladen Korbelik
- British Columbia Cancer Agency, 675 West 10th Ave., Vancouver, BC V5Z 1L3, Canada
| | - Duska Separovic
- Department of Pharmaceutical Sciences, Eugene Applebaum College of Pharmacy and Health Sciences, Wayne State University, 259 Mack Ave., Detroit, MI 48201, USA; Karmanos Cancer Institute, Wayne State University, 4100 John R, Detroit, MI 48201, USA.
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Beckham Y, Vasquez RJ, Stricker J, Sayegh K, Campillo C, Gardel ML. Arp2/3 inhibition induces amoeboid-like protrusions in MCF10A epithelial cells by reduced cytoskeletal-membrane coupling and focal adhesion assembly. PLoS One 2014; 9:e100943. [PMID: 24967897 PMCID: PMC4072770 DOI: 10.1371/journal.pone.0100943] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2014] [Accepted: 06/02/2014] [Indexed: 11/18/2022] Open
Abstract
Here we demonstrate that Arp2/3 regulates a transition between mesenchymal and amoeboid protrusions in MCF10A epithelial cells. Using genetic and pharmacological means, we first show Arp2/3 inhibition impairs directed cell migration. Arp2/3 inhibition results in a dramatically impaired cell adhesion, causing deficient cell attachment and spreading to ECM as well as an 8-fold decrease in nascent adhesion assembly at the leading edge. While Arp2/3 does not play a significant role in myosin-dependent adhesion growth, mature focal adhesions undergo large scale movements against the ECM suggesting reduced coupling to the ECM. Cell edge protrusions occur at similar rates when Arp2/3 is inhibited but their morphology is dramatically altered. Persistent lamellipodia are abrogated and we observe a markedly increased incidence of blebbing and unstable pseuodopods. Micropipette-aspiration assays indicate that Arp2/3-inhibited cells have a weak coupling between the cell cortex and the plasma membrane, and suggest a potential mechanism for increased pseudopod and bleb formation. Pseudopods are not sensitive to reduced in formin or myosin II activity. Collectively, these results indicate that Arp2/3 is not necessary for rapid protrusion of the cell edge but plays a crucial role in assembling focal adhesions required for its stabilization.
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Affiliation(s)
- Yvonne Beckham
- Institute for Biophysical Dynamics, University of Chicago Medical Center, Chicago, Illinois, United States of America
| | - Robert J. Vasquez
- Section of Hematology, Oncology and Stem Cell Transplantation, Department of Pediatrics, University of Chicago Medical Center, Chicago, Illinois, United States of America
| | - Jonathan Stricker
- James Franck Institute, University of Chicago, Chicago, Illinois, United States of America
- Department of Physics, University of Chicago, Chicago, Illinois, United States of America
| | - Kareem Sayegh
- James Franck Institute, University of Chicago, Chicago, Illinois, United States of America
- Department of Physics, University of Chicago, Chicago, Illinois, United States of America
| | - Clement Campillo
- Laboratoire Physico-Chimie, Institut Curie, Centre de Recherche, Paris, France
- Laboratoire Analyse et Modélisation pour la Biologie et l’ Environnement, Université d’Evry Val d’Essonne, Evry, France
| | - Margaret L. Gardel
- Institute for Biophysical Dynamics, University of Chicago Medical Center, Chicago, Illinois, United States of America
- James Franck Institute, University of Chicago, Chicago, Illinois, United States of America
- Department of Physics, University of Chicago, Chicago, Illinois, United States of America
- * E-mail:
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Nateewattana J, Dutta S, Reabroi S, Saeeng R, Kasemsook S, Chairoungdua A, Weerachayaphorn J, Wongkham S, Piyachaturawat P. Induction of apoptosis in cholangiocarcinoma by an andrographolide analogue is mediated through topoisomerase II alpha inhibition. Eur J Pharmacol 2013; 723:148-55. [PMID: 24360936 DOI: 10.1016/j.ejphar.2013.12.002] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2013] [Revised: 12/04/2013] [Accepted: 12/04/2013] [Indexed: 01/31/2023]
Abstract
Cholangiocarcinoma (CCA), the common primary malignant tumor of bile duct epithelial cells, is unresponsive to most chemotherapeutic drugs. Diagnosis with CCA has a poor prognosis, and therefore urgently requires effective therapeutic agents. In the present study we investigated anti-cancer effects of andrographolide analogue 3A.1 (19-tert-butyldiphenylsilyl-8, 17-epoxy andrographolide) and its mechanism in human CCA cell line KKU-M213 derived from a Thai CCA patient. By 24h after exposure, the analogue 3A.1 exhibited a potent cytotoxic effect on KKU-M213 cells with an inhibition concentration 50 (IC50) of approximately 8.0µM. Analogue 3A.1 suppressed DNA topoisomerase II α (Topo II α) protein expression, arrested the cell cycle at sub G0/G1 phase, induced cleavage of DNA repair protein poly (ADP-ribose) polymerases-1 (PARP-1), and enhanced expression of tumor suppressor protein p53 and pro-apoptotic protein Bax. In addition, analogue 3A.1 induced caspase 3 activity and inhibited cyclin D1, CDK6, and COX-2 protein expression. These results suggest that andrographolide analogue 3A.1, a novel topo II inhibitor, has significant potential to be developed as a new anticancer agent for the treatment of CCA.
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Affiliation(s)
- Jintapat Nateewattana
- Toxicology Graduate Program, Faculty of Science, Mahidol University, Bangkok, Thailand; Department of Physiology, Faculty of Science, Mahidol University, Bangkok, Thailand
| | - Suman Dutta
- Department of Physiology, Faculty of Science, Mahidol University, Bangkok, Thailand
| | - Somrudee Reabroi
- Department of Physiology, Faculty of Science, Mahidol University, Bangkok, Thailand
| | - Rungnapha Saeeng
- Department of Chemistry, Faculty of Science, Burapha University, Chonburi, Thailand
| | - Sakkasem Kasemsook
- Department of Chemistry, Faculty of Science, Burapha University, Chonburi, Thailand
| | - Arthit Chairoungdua
- Department of Physiology, Faculty of Science, Mahidol University, Bangkok, Thailand
| | | | - Sopit Wongkham
- Department of Biochemistry, Liver Fluke and Cholangiocarcinoma Research Center, Faculty of Medicine, Khon Kaen University, Khon Kaen, Thailand
| | - Pawinee Piyachaturawat
- Toxicology Graduate Program, Faculty of Science, Mahidol University, Bangkok, Thailand; Department of Physiology, Faculty of Science, Mahidol University, Bangkok, Thailand.
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Shen XM, Zheng BY, Zhang HH, Huang JD. [Synthesis and photodynamic anticancer activity of silicon phthalocyanine axially modified by nucleoside derivatives]. Guang Pu Xue Yu Guang Pu Fen Xi 2013; 33:2731-2735. [PMID: 24409726] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
A new axially modified silicon phthalocyanine, di [5'-(2', 3'-O-isopropyl)-5-methyl cytidineoxy] silicon phthalocyanine (SiPcG), was prepared and characterized by 1H NMR and HRMS. This compound is essentially nonaggregated in N,N-dimethyformamide and 1% cremophor EL aqueous solution. It shows a Qband at 676 nm and fluorescence emission at 685 nm in DMF, and exhibits a Q-band at 679 nm and fluorescence emission at 689 nm in 1% cremophor EL aqueous solution. The SiPcG shows a high photodynamic activity against human hepatoma cells HepG2 with an IC50 value down to 7.8 x 10(-8) mol x L(-1). Fluorescence confocal microscopy study indicated that the SiPcG locates preferentially in the mitochondria of cells. The research results show that the SiPcG is highly potential as a new anti-cancer photosensitizer.
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Affiliation(s)
- Xiao-Min Shen
- College of Chemistry and Chemical Engineering, Fuzhou University, Fuzhou 350108, China.
| | - Bi-Yuan Zheng
- College of Chemistry and Chemical Engineering, Fuzhou University, Fuzhou 350108, China
| | - Han-Hui Zhang
- College of Chemistry and Chemical Engineering, Fuzhou University, Fuzhou 350108, China
| | - Jian-Dong Huang
- College of Chemistry and Chemical Engineering, Fuzhou University, Fuzhou 350108, China
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Shen XM, Jiang XJ, Zhu YJ, Zhang HH, Huang JD. [Spectral properties, photodynamic anticancer activity and the interaction with albumin of silicon phthalocyanine axially modified by pyrimidine derivatives]. Guang Pu Xue Yu Guang Pu Fen Xi 2013; 33:2148-2152. [PMID: 24159865] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
Photophysical photochemical properties, in vitro photodynamic anticancer activity and interaction with albumin of a new axially modified silicon phthalocyanine, i. e. di (2-amino-6-trifluoromethyl-4-pyrimidinyloxy) silicon phthalocyanine (SiPcF), were studied in the present paper. The Q band maximum absorption of SiPcF located at 686 nm with the molar absorption coefficient of 2.3 x 10(5) mol(-1) * L * cm(-1). The fluorescence emission of SiPcF peaked at 694 nm with a fluorescence quantum yield of 0.46. Its singlet oxygen quantum yield produced by photosensitization is 0.38, suggesting that SiPcF is an effective 1O2 photosensitizer. There is strong interaction between SiPcF and bovine serum albumin (BSA). The binding constant is 4.33 x 10(5) mol X L(-1) and the number of binding sites is 1. In vitro experiments show that SiPcF had a high photodynamic anticancer activity against human hepatoma cells HepG2 with an IC50 value down to 5 x 10(-7) mol X L(-1).
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Affiliation(s)
- Xiao-Min Shen
- College of Chemistry and Chemical Engineering, Fuzhou University, Fuzhou 350108, China.
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Kim KO, Kim BS, Lee KH, Park YH, Kim IS. Osteoblastic cells culture on electrospun poly(ε-caprolacton) scaffolds incorporating amphiphilic PEG-POSS telechelic. J Mater Sci Mater Med 2013; 24:2029-2036. [PMID: 23661256 DOI: 10.1007/s10856-013-4943-0] [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] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/03/2012] [Accepted: 04/29/2013] [Indexed: 06/02/2023]
Abstract
In this work, novel poly(ε-caprolactone) (PCL) fibrous membranes incorporating amphiphilic polyhedral oligosilsesquioxane (POSS) telechelic (PEG-POSS telechelic) were prepared via electrospinning. The unique microstructure, morphology, thermal stability of the resulting PCL/PEG-POSS telechelic electrospun nanowebs were investigated by X-ray diffraction, scanning electron microscopy, and thermogravimetric analysis, respectively. The addition of amphiphilic PEG-POSS telechelic strongly influenced the fiber diameters, microstructures of the resultant PCL/PEG-POSS telechelic nanofibers, compared to pure PCL nanofibers. The potential biomedical applications of such PEG-POSS telechelic nanowebs as a scaffolding material were also evaluated in vitro using mouse osteoblast-like MC3T3-E1 cells. The cell adhesion, spreading, and interaction behavior of pure PCL and PCL/PEG-POSS telechelic fibrous membranes were explored. It was found that electrospun PCL fibrous membranes incorporating amphiphilic PEG-POSS telechelic showed higher initial cell attachment than pure PCL due to the higher surface free energy of POSS siloxanes. Moreover, the obtained PCL/PEG-POSS telechelic fibrous scaffolds were found to be nontoxic and to maintain the good adhesion ratio between cells and surface (about ~93 %) after cell culturing for 24 h.
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Affiliation(s)
- Kyu-Oh Kim
- Nano Fusion Technology Research Group, Interdisciplinary Graduate School of Science and Technology, Faculty of Textile Science and Technology, Shinshu University, Ueda, Nagano, 386-0015, Japan
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Renò F, Carniato F, Rizzi M, Olivero F, Pittarella P, Marchese L. Flow cytometry evidence of human granulocytes interaction with polyhedral oligomeric silsesquioxanes: effect of nanoparticle charge. Nanotechnology 2013; 24:185101. [PMID: 23574975 DOI: 10.1088/0957-4484/24/18/185101] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
Nanoparticles (NPs) entering the human body are immediately confronted with the innate part of human immune system. In particular, monocyte and neutrophil granulocytes readily clear particles by phagocytosis, even if in the case of NPs the uptake mechanism may be classified as macropinocytosis. Among engineered nanoparticles, in the last years, siliceous materials have emerged as promising materials for several applications ranging from catalysis to biomedical. The polyhedral oligomeric silsesquioxanes (POSS) are nanodimensional, easily synthesizable molecular compounds and POSS-based systems are promising carriers for biological molecules. In this work, the ability of human granulocytes to uptake positively and negatively charged POSS was measured using a simple flow cytometry analysis based on cell size modifications. The data obtained showed that after a 30 min exposure only positive NPs were uptaken by human granulocyte using both macropinocytosis and clathrin-mediated mechanisms as demonstrated by uptake inhibition mediated by amiloride and chlorpromazine.
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Affiliation(s)
- Filippo Renò
- Innovative Research Laboratory for Wound Healing, Health Sciences Department, University of Eastern Piedmont A. Avogadro, via Solaroli, 17 I-28100 Novara, Italy.
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Guan B, Cui Y, Ren Z, Qiao ZA, Wang L, Liu Y, Huo Q. Highly ordered periodic mesoporous organosilica nanoparticles with controllable pore structures. Nanoscale 2012; 4:6588-6596. [PMID: 22976432 DOI: 10.1039/c2nr31662e] [Citation(s) in RCA: 57] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
A general synthetic procedure for highly ordered and well-dispersed periodic mesoporous organosilica (PMO) nanoparticles is reported based on a single cationic surfactant cetyltrimethylammonium bromide (CTAB) and simple silica sources with organic bridging groups via an ammonia-catalyzed sol-gel reaction. By changing the bridging group in the silica sources, the pore structures of the as-made particles with three-dimensional hexagonal (P6(3)/mmc), cubic (Pm3n), two-dimensional hexagonal (P6mm), and wormlike structure were evidenced by powder X-ray diffraction analysis (XRD) and transmission electron microscopy (TEM). The size range of the nanoparticles can be adjusted from 30 nm to 500 nm by variation of the ammonia concentration or the co-solvent content of the reaction medium. The PMO nanoparticles with high concentration of organic groups in the framework offered good thermal stability, good dispersion in low polarity solvent and high adsorption of small hydrophobic molecules. Finally, the dye functionalized PMO nanoparticles show low cytotoxicity and excellent cell permeability, which offers great potential for biomedical applications.
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Affiliation(s)
- Buyuan Guan
- State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, College of Chemistry, Jilin University, Changchun 130012, China
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Yun Y, Yu F, Wang N, Chen H, Yin Y, Ma Z. Sensitivity to silthiofam, tebuconazole and difenoconazole of Gaeumannomyces graminis var. tritici isolates from China. Pest Manag Sci 2012; 68:1156-1163. [PMID: 22411909 DOI: 10.1002/ps.3277] [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] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/13/2011] [Revised: 09/25/2011] [Accepted: 01/13/2012] [Indexed: 05/31/2023]
Abstract
BACKGROUND Wheat take-all caused by Gaeumannomyces graminis var. tritici (Ggt) has become an emerging threat to wheat production in the last few years. Silthiofam is very effective against Ggt, and recently it has been widely used for the control of take-all in China. However, farmers have noted a decline in control efficacy with this compound in some wheat fields, suggesting that the pathogen may have developed resistance to silthiofam. RESULTS Of the 66 Ggt isolates collected from different locations in China, 27 were resistant to silthiofam. There was no cross-resistance between silthiofam and tecuconazole or difenoconazole. The effectiveness of silthiofam in controlling take-all was compromised on wheat inoculated with silthiofam-resistant isolates. Based on the DNA fingerprinting generated by microsatellite PCR, two predominant genetic clusters were found among these isolates and were clearly associated with the sensitivity to silthiofam. CONCLUSION Silthiofam has a high risk in the development of resistance in Ggt. Tebuconazole and difenoconazole show great potential for control of take-all on wheat. Results from this study provide useful information for take-all control and the management of fungicide resistance.
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Affiliation(s)
- Yingzi Yun
- Institute of Biotechnology, Zhejiang University, Hangzhou, China
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Lam M, Jou PC, Lattif AA, Lee Y, Malbasa CL, Mukherjee PK, Oleinick NL, Ghannoum MA, Cooper KD, Baron ED. Photodynamic therapy with Pc 4 induces apoptosis of Candida albicans. Photochem Photobiol 2011; 87:904-9. [PMID: 21521233 PMCID: PMC3139787 DOI: 10.1111/j.1751-1097.2011.00938.x] [Citation(s) in RCA: 46] [Impact Index Per Article: 3.5] [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: 12/01/2022]
Abstract
The high prevalence of drug resistance necessitates the development of novel antifungal agents against infections caused by opportunistic fungal pathogens, such as Candida albicans. Elucidation of apoptosis in yeast-like fungi may provide a basis for future therapies. In mammalian cells, photodynamic therapy (PDT) has been demonstrated to generate reactive oxygen species, leading to immediate oxidative modifications of biological molecules and resulting in apoptotic cell death. In this report, we assess the in vitro cytotoxicity and mechanism of PDT, using the photosensitizer Pc 4, in planktonic C. albicans. Confocal image analysis confirmed that Pc 4 localizes to cytosolic organelles, including mitochondria. A colony formation assay showed that 1.0 μM Pc 4 followed by light at 2.0 J cm(-2) reduced cell survival by 4 logs. XTT (2,3-bis[2-methoxy-4-nitro-5-sulfophenyl]-2H-tetrazolium-5-carboxyanilide) assay revealed that Pc 4-PDT impaired fungal metabolic activity, which was confirmed using the FUN-1 (2-chloro-4-[2,3-dihydro-3-methyl-(benzo-1,3-thiazol-2-yl)-methylidene]-1-phenylquinolinium iodide) fluorescence probe. Furthermore, we observed changes in nuclear morphology characteristic of apoptosis, which were substantiated by increased externalization of phosphatidylserine and DNA fragmentation following Pc 4-PDT. These data indicate that Pc 4-PDT can induce apoptosis in C. albicans. Therefore, a better understanding of the process will be helpful, as PDT may become a useful treatment option for candidiasis.
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Affiliation(s)
- Minh Lam
- Department of Dermatology, University Hospitals Case Medical Center, 11100 Euclid Avenue, and Case Western Reserve University, 10900 Euclid Ave., Cleveland, OH 44106, USA
- Case Comprehensive Cancer Center, University Hospitals Case Medical Center, 11100 Euclid Avenue, and Case Western Reserve University, 10900 Euclid Ave., Cleveland, OH 44106, USA
- Case Skin Diseases Research Center, University Hospitals Case Medical Center, 11100 Euclid Avenue, and Case Western Reserve University, 10900 Euclid Ave., Cleveland, OH 44106, USA
| | - Paul C. Jou
- Department of Dermatology, University Hospitals Case Medical Center, 11100 Euclid Avenue, and Case Western Reserve University, 10900 Euclid Ave., Cleveland, OH 44106, USA
| | - Ali A. Lattif
- Center for Medical Mycology, University Hospitals Case Medical Center, 11100 Euclid Avenue, and Case Western Reserve University, 10900 Euclid Ave., Cleveland, OH 44106, USA
| | - Yoojin Lee
- Department of Dermatology, University Hospitals Case Medical Center, 11100 Euclid Avenue, and Case Western Reserve University, 10900 Euclid Ave., Cleveland, OH 44106, USA
| | - Christi L. Malbasa
- Department of Dermatology, University Hospitals Case Medical Center, 11100 Euclid Avenue, and Case Western Reserve University, 10900 Euclid Ave., Cleveland, OH 44106, USA
- Case Skin Diseases Research Center, University Hospitals Case Medical Center, 11100 Euclid Avenue, and Case Western Reserve University, 10900 Euclid Ave., Cleveland, OH 44106, USA
| | - Pranab K. Mukherjee
- Department of Dermatology, University Hospitals Case Medical Center, 11100 Euclid Avenue, and Case Western Reserve University, 10900 Euclid Ave., Cleveland, OH 44106, USA
- Center for Medical Mycology, University Hospitals Case Medical Center, 11100 Euclid Avenue, and Case Western Reserve University, 10900 Euclid Ave., Cleveland, OH 44106, USA
| | - Nancy L. Oleinick
- Case Comprehensive Cancer Center, University Hospitals Case Medical Center, 11100 Euclid Avenue, and Case Western Reserve University, 10900 Euclid Ave., Cleveland, OH 44106, USA
- Department of Radiation Oncology, University Hospitals Case Medical Center, 11100 Euclid Avenue, and Case Western Reserve University, 10900 Euclid Ave., Cleveland, OH 44106, USA
| | - Mahmoud A. Ghannoum
- Department of Dermatology, University Hospitals Case Medical Center, 11100 Euclid Avenue, and Case Western Reserve University, 10900 Euclid Ave., Cleveland, OH 44106, USA
- Case Skin Diseases Research Center, University Hospitals Case Medical Center, 11100 Euclid Avenue, and Case Western Reserve University, 10900 Euclid Ave., Cleveland, OH 44106, USA
- Center for Medical Mycology, University Hospitals Case Medical Center, 11100 Euclid Avenue, and Case Western Reserve University, 10900 Euclid Ave., Cleveland, OH 44106, USA
- Department of Dermatology, Cleveland Veterans Affairs Medical Center, Cleveland, OH 44106, USA
| | - Kevin D. Cooper
- Department of Dermatology, University Hospitals Case Medical Center, 11100 Euclid Avenue, and Case Western Reserve University, 10900 Euclid Ave., Cleveland, OH 44106, USA
- Case Comprehensive Cancer Center, University Hospitals Case Medical Center, 11100 Euclid Avenue, and Case Western Reserve University, 10900 Euclid Ave., Cleveland, OH 44106, USA
- Case Skin Diseases Research Center, University Hospitals Case Medical Center, 11100 Euclid Avenue, and Case Western Reserve University, 10900 Euclid Ave., Cleveland, OH 44106, USA
- Department of Dermatology, Cleveland Veterans Affairs Medical Center, Cleveland, OH 44106, USA
| | - Elma D. Baron
- Department of Dermatology, University Hospitals Case Medical Center, 11100 Euclid Avenue, and Case Western Reserve University, 10900 Euclid Ave., Cleveland, OH 44106, USA
- Case Comprehensive Cancer Center, University Hospitals Case Medical Center, 11100 Euclid Avenue, and Case Western Reserve University, 10900 Euclid Ave., Cleveland, OH 44106, USA
- Case Skin Diseases Research Center, University Hospitals Case Medical Center, 11100 Euclid Avenue, and Case Western Reserve University, 10900 Euclid Ave., Cleveland, OH 44106, USA
- Department of Dermatology, Cleveland Veterans Affairs Medical Center, Cleveland, OH 44106, USA
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Rozengart EV, Basova NE. [Siliconorganic reversible inhibitors of cholinesterases of various animals]. Zh Evol Biokhim Fiziol 2011; 47:113-119. [PMID: 21598695] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
The review present data on cholinesterase effects of 28 specially synthesized siliconorganic compounds (monoonium, clementorganic, and bisonium derivatives) studied as reversible inhibitors of acetylcholinesterase (acetyl-ChE) of human erythrocytes, butyryl-ChE of horse blood serum, ChE of brain of common frog Rana temporaria, ChE of the optical ganglia tissue of Pacific squid Todarodes pacificus and of individuals of Commandor squid Berryteuthis magister from various habitats in the Northwestern aquatoria of the Pacific ocean. Among the tested compounds, there are revealed highly specific inhibitors of mammalian ChE as well as of ChE of the B. magister individuals from various habitats.
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Hu Y, Li J, Ma L, Peng Q, Feng W, Zhang L, He S, Yang F, Huang J, Li L. High efficiency transport of quantum dots into plant roots with the aid of silwet L-77. Plant Physiol Biochem 2010; 48:703-709. [PMID: 20451401 DOI: 10.1016/j.plaphy.2010.04.001] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/07/2009] [Revised: 03/30/2010] [Accepted: 04/01/2010] [Indexed: 05/29/2023]
Abstract
Quantum dots (QDs) are a novel type of small, photostable and bright fluorophores that have been successfully applied to mammalian and human live cell imaging. In this study, highly dispersive water-soluble mercaptoacetic acid (MAA)-coated CdSe/ZnS QDs were synthesized, which were suitable for investigation as fluorescent probe labels. The treatment of maize seedling roots with QDs showed that the surfactant silwet L-77 aided the efficient transport of QDs into maize roots. Under a concentration ranging from 0.128 to 1.28 microM, QDs caused very low cytotoxicity on maize seed germination and root growth. The addition of mercuric chloride to the Hoagland solution resulted in a decrease of QD content in root tissues, and this decrease was reversed upon the addition of beta-mercaptoethanol, which suggests that mercury-sensitive processes play a significant role in regulating QD flow in the maize root system. We speculate that the apoplastic pathway can contribute substantially to the total quantity of QDs reaching the stele. Therefore, based on this transport approach, MAA-coated QDs can be utilized for live imaging in plant systems to verify known physiological processes.
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Affiliation(s)
- Yong Hu
- Key Laboratory of MOE for Plant Development Biology, College of Life Sciences, Wuhan University, Wuhan 430072, China
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Abstract
The silicon phthalocyanine Pc 4 is a second-generation photosensitizer that has several properties superior to other photosensitizers currently approved by the FDA, and it has shown significant promise for photodynamic therapy (PDT) in several cancer cells in vitro and model tumor systems in vivo. However, because of the high hydrophobicity of Pc 4, its formulation for in vivo delivery and favorable biodistribution become challenging. To this end, we are studying encapsulation and delivery of Pc 4 in block copolymer micelles. Here, we report the development of biocompatible PEG-PCL micelle nanoparticles, encapsulation of Pc 4 within the micelle core by hydrophobic association with the PCL block, and in vitro PDT studies of the micelle-formulated Pc 4 in MCF-7c3 human breast cancer cells. Our studies demonstrate efficient encapsulation of Pc 4 in the micelles, intracellular uptake of the micelle-formulated Pc 4 in cells, and significant cytotoxic effect of the formulation upon photoirradiation. Quantitative estimation of the extent of Pc 4 loading in the micelles and the photocytotoxicity of the micelle-incorporated Pc 4 demonstrate the promise of our approach to develop a biocompatible nanomedicine platform for tumor-targeted delivery of Pc 4 for site-selective PDT.
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Affiliation(s)
- Alyssa M Master
- Department of Biomedical Engineering, Case Western Reserve University, Cleveland, Wickenden Building, Rm 519, Cleveland, Ohio 44106, USA
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Li JF, Nebenführ A. FAST technique for Agrobacterium-mediated transient gene expression in seedlings of Arabidopsis and other plant species. Cold Spring Harb Protoc 2010; 2010:pdb.prot5428. [PMID: 20439415 DOI: 10.1101/pdb.prot5428] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [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: 05/02/2023]
Abstract
Genome sequencing has identified a massive number of uncharacterized genes in Arabidopsis thaliana and several other plant species. To decipher these unknown gene functions, several transient expression assays have been developed as rapid and convenient alternatives to the lengthy creation of transgenic plants. As one of these transient assays, Agrobacterium-mediated transformation harnesses the natural capability of Agrobacterium to transfer foreign DNA into plant cells with intact cell walls. However, pioneering applications of Agrobacterium-based transient transformation to Arabidopsis have led to rather limited success with great variability. In this protocol, we describe a Fast Agrobacterium-mediated Seedling Transformation (FAST) technique for transient gene expression analysis in Arabidopsis and other dicot or monocot species. This technique makes use of the cocultivation of young plant seedlings with Agrobacterium in the presence of the surfactant Silwet L-77. The young seedlings can be grown easily and were found to be more susceptible to Agrobacterium transformation compared with adult plants. The surfactant facilitates transformation of plant cells, thus replacing wounding or a device-dependent vacuum step during plant transformation. This protocol provides a quick, efficient, and economical assay for gene function in intact plants with minimal manual handling and without the need for a dedicated device.
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Affiliation(s)
- Jian-Feng Li
- Department of Biochemistry and Cellular and Molecular Biology, University of Tennessee, Knoxville, TN 37996, USA
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Selvaraj V, Grace AN, Jothibasu S, Nagendiran S, Alagar M. Synthesis and characterization of Au/POSS composite powder for bio-fuel cells and antibiotic applications. J Nanosci Nanotechnol 2009; 9:5997-6002. [PMID: 19908486 DOI: 10.1166/jnn.2009.1230] [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] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
Au(0)/POSS (Octa(aminophenyl) Silsesquioxane) composite was synthesized by chemical reduction of auric acid using glycerol as reducing agent. The morphology and physicochemical properties of Au/POSS nanocomposite were characterized by NMR, FT-IR and TEM spectroscopy. The Au/POSS nanocomposite electrode was used for the oxidation of glucose. The results indicate that the Au/POSS nanocomposite film was highly sensitive and suitable for glucose in 0.5 M NaOH. The presence of ascorbic acid in analyte gave no error in detection of glucose for measuring 5 mM glucose, which is the normal physiological level in blood. Further, Au/POSS nanocomposite showed an enhanced antibacterial activity even higher than standard ciprofloxacin. Hence, Au/POSS nanocomposite acts as a strong antibiocides as well as selective electrodes towards glucose oxidations.
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Affiliation(s)
- V Selvaraj
- Department of Chemistry, University College of Engineering-Villupuram, Anna University, Chennai 600025, TN, India
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