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91.
Synthesis of porphyrin nitrogen mustards with potential anti-tumor activities in chemotheraphy and photodynamic therapy 总被引:3,自引:0,他引:3
2,7,12,18-Tetramethyl-13,17-di[3'-N,N'-di(2"-chloroethyl)aminopropyl]porphin and it's 3,8-di(1'-alkyloxyethyl)-analogous or porphyrin-nitrogen mustards were synthesized for the first time Their structures were determined by spectroscopics and elemental analyses.Most of the compounds possess both the chemotherapeutic and photodynamic effects on tumor and deserve further investigation. 相似文献
92.
Albert Moussaron Philippe Arnoux Régis Vanderesse Estelle Sibille Patrick Chaimbault Céline Frochot 《Tetrahedron》2013
Several phthalocyanines with different peripheral substituents were prepared and characterized by MALDI-TOF, 1H NMR, UV–vis, fluorescence, and singlet oxygen quantum yields and retention time in HPLC normal phase. Zinc was used as a central metal ion to increase the photodynamic therapy efficiency. Phthalonitrile or 4-nitro phthalonitriles were used as starting materials. The influence of lipophilicity on the photophysical and photochemical properties was evaluated. 相似文献
93.
Carla Marisa Brito Carvalho Marta Akemi FujitaTimothy John Brocksom Kleber Thiago de Oliveira 《Tetrahedron》2013
New β-fused uracil-porphyrin conjugates were synthesized by the tetramerization of uracil-pyrroles under acidic conditions. Two different synthetic approaches were systematically studied in order to evaluate their efficiency, as well as the possibility to obtain a single regioisomer. Metallation effects were studied for aggregation in solution, and preliminary photophysical experiments were also performed in order to evaluate the potential of these new compounds. 相似文献
94.
Liquid chromatography plays a central role in process-scale manufacturing of therapeutic plasmid DNA (pDNA) for gene therapy and DNA vaccination. Apart from its use as a preparative purification step, it is also very useful as an analytical tool to monitor and control pDNA quality during processing and in final formulations. This paper gives an overview of the use of pDNA chromatography. The specificity of pDNA purification and the consequent limitations to the performance of chromatography are described. Strategies currently used to overcome those limitations, as well as other possible solutions are presented. Applications of the different types of chromatography to the purification of therapeutic pDNA are reviewed, and the main advantages and disadvantages behind each technique highlighted. 相似文献
95.
Jin Sung Park Da-Young Chang Ji-Hoi Kim Jin Hwa Jung JoonSeong Park Se-Hyuk Kim Young-Don Lee Sung-Soo Kim Haeyoung Suh-Kim 《Experimental & molecular medicine》2013,45(2):e10
Human mesenchymal stem cells (MSCs) have emerged as attractive cellular vehicles
to deliver therapeutic genes for ex-vivo therapy of diverse diseases;
this is, in part, because they have the capability to migrate into tumor or
lesion sites. Previously, we showed that MSCs could be utilized to deliver a
bacterial cytosine deaminase (CD) suicide gene to brain tumors. Here we
assessed whether transduction with a retroviral vector encoding CD gene
altered the stem cell property of MSCs. MSCs were transduced at passage 1 and
cultivated up to passage 11. We found that proliferation and differentiation
potentials, chromosomal stability and surface antigenicity of MSCs were not
altered by retroviral transduction. The results indicate that retroviral vectors
can be safely utilized for delivery of suicide genes to MSCs for
ex-vivo therapy. We also found that a single retroviral
transduction was sufficient for sustainable expression up to passage 10. The
persistent expression of the transduced gene indicates that transduced MSCs
provide a tractable and manageable approach for potential use in allogeneic
transplantation. 相似文献
96.
97.
Dr. Anthony J. Kim Dr. Nicholas J. Boylan Dr. Jung Soo Suk Minyoung Hwangbo Tao Yu Benjamin S. Schuster Dr. Liudimila Cebotaru Dr. Wojciech G. Lesniak Joon Seok Oh Pichet Adstamongkonkul Ashley Y. Choi Prof. Dr. Rangaramanujam M. Kannan Prof. Dr. Justin Hanes 《Angewandte Chemie (International ed. in English)》2013,52(14):3985-3988
98.
99.
Synthesis of Cationic Dumbbell-shaped Fullerene Nanostructures as Potential Photodynamic Sensitizers
A design of novel hydrophilic tetracationic dumbbell-shaped [60]fullerene nanostructures was made by balancing the hydrophilicity and hydrophobicity characteristics of the fullerene adduct for their potential application as photodynamic sensitizers in the PDT treatment. A sequential protection-deprotection reaction pathway was applied for the functional differentiation between primary and secondary amine moieties of pentaethylene hexamine. Synthesis of the target molecule involves two key steps of unsymmetrical esterification and amidation of malonic acid and subsequent fullerenation. The synthetic strategy was accomplished using mild reaction conditions in the intermediate molecule preparation and led a moderate overall product yield. 相似文献
100.
Sang Gyo Seo Ji Hyun Yeo JI Hye Kim Ji-Beom Kim Tae-Joon Cho Dong Yeon Lee 《Experimental & molecular medicine》2013,45(11):e62
Non healing chronic wounds are difficult to treat in patients with diabetes and can result in severe medical problems for these patients and for society. Negative-pressure wound therapy (NPWT) has been adopted to treat intractable chronic wounds and has been reported to be effective. However, the mechanisms underlying the effects of this treatment have not been elucidated. To assess the vasculogenic effect of NPWT, we evaluated the systemic mobilization of endothelial progenitor cells (EPCs) during NPWT. Twenty-two of 29 consecutive patients who presented at the clinic of Seoul National Universty Hospital between December 2009 and November 2010 who underwent NPWT for diabetic foot infections or skin ulcers were included in this study. Peripheral blood samples were taken before NPWT (pre-NPWT) and 7–14 days after the initiation of NPWT (during-NPWT). Fluorescence-activated cell sorting (FACS) analysis showed that the number of cells in EPC-enriched fractions increased after NPWT, and the numbers of EPC colony forming units (CFUs) significantly increased during NPWT. We believe that NPWT is useful for treating patients with diabetic foot infections and skin ulcers, especially when these conditions are accompanied by peripheral arterial insufficiency. The systemic mobilization of EPCs during NPWT may be a mechanism for healing intractable wounds in diabetic patients with foot infections or skin defects via the formation of increased granulation tissue with numerous small blood vessels. 相似文献