光动力诱导的病毒灭活在防止可输血产品中包膜病毒感染的传播方面似乎很有希望。评估了利用金丝桃素作为光敏剂灭活浓缩红细胞浓缩物 (PRC) 中关键包膜病毒的潜力。除了有效灭活≥106 TCID50的人类免疫缺陷病毒(HIV)外,中国牛病毒性腹泻病毒(BVDV)的灭活被用作丙型肝炎病毒的模型,以克服丙型肝炎病毒(HCV)可靠实验系统的不足) 灭活。BVDV 对金丝桃素灭活的敏感性比 HIV 高两个数量级。作为杀病毒功效分析的一部分,研究了光敏化对携带静止整合 HIV 前病毒的造血细胞系的影响,作为评估潜伏感染细胞中病毒灭活的模型。金丝桃素的光敏作用有效地阻止了佛波酯诱导的这些细胞产生病毒。照明条件的改进,结合单色钠光源,其发射光谱与金丝桃素的吸收峰重合,具有高度的杀病毒性,但会导致不可接受的溶血水平。通过将金丝桃素与人血清白蛋白(白蛋白-金丝桃素)复合,可以保护红细胞免受光毒性细胞损伤,但溶血的减少是以牺牲杀病毒功效为代价的。因此,
AN IMPROVED SYNTHESIS OF HYPERICIN AND RELATED COMPOUNDS
作者:Ewa Gruszecka-Kowalik、Leon H. Zalkow
DOI:10.1080/00304940009356746
日期:2000.2
quinone from the traditional medicinal plant St. John's wort (Hypericum genus) has been known for decades.l In recent years, the use of hypericin experienced a renaissance and much attention has been directed to it as a photodynamic agent possessing light-induced antiviral activity against several enveloped viruses, including human immunodeficiency virus (HIV), herpes simplex (HSV), Sindbis virus, murine
A highly efficient synthetic pathway for hypericin as well as its derivatives was achieved under mild and green conditions with high yields.
在温和和绿色的条件下,高效的合成途径被实现,可以得到高收率的金丝桃素及其衍生物。
Cancer‐Mitochondria Dual‐Targeting Glycol/Ferrocenium‐Based Polydopamine Nanoparticles for Synergistic Photothermal and Photodynamic Therapy
作者:Yun Qu、Xinxin Wang、Zhichao Pei、Yuxin Pei
DOI:10.1002/cmdc.202100548
日期:2022.1.19
Synergistic phototherapy: Nanoparticlesbased on lactose and ferrocenium derivatives conjugated with polydopamine (PDA@Lac/Fc/Hyp) were constructed for photothermal and photodynamictherapy. PDA@Lac/Fc/Hyp showed cancer-mitochondria dual-targeting ability deriving from lactose and ferrocenium derivatives, due to specific carbohydrate-protein interactions and cationic species properties, respectively
Systems And Methods For Producing Synthetic Hypericin
申请人:Soligenix, Inc.
公开号:US20170253551A1
公开(公告)日:2017-09-07
Improved systems and methods for producing synthetic hypericin at high volume and high purity.
改进的系统和方法,用于高产高纯度合成金丝桃素。
Photocytotoxicity of Protohypericin after Photoconversion to Hypericin
作者:Els M. Delaey、Appolinary R. Kamuhabwa、Ann L. Vandenbogaerde、Peter A. de Witte
DOI:10.1055/s-1999-14050
日期:1999.12
In the present study, protohypericin was synthesised in order to compare its intrinsic photocytotoxicity with that of hypericin. The experimental work was performed in specific filtered light conditions that prevented both an unintended photoconversion of protohypericin and photosensitization of the cells. Assessing the photocytotoxicity as a function of irradiation time, it was found that the photocytotoxicity of both compounds converged after a long irradiation time (i.e., 15 min), while the difference between the photocytotoxicities was maximal after a short irradiation time (i.e., 1 min). Since this could not be accounted for by a redistribution of protohypericin during irradiation, and the different irradiation times corresponded to different degrees of photoconversion of protohypericin into hypericin, the results clearly suggest that protohypericin exhibits intrinsically a dramatically lower photoactivity as compared to hypericin.