BLR&D Research Career Scientist Renewal Award Application
BLR
基本信息
- 批准号:10047237
- 负责人:
- 金额:--
- 依托单位:
- 依托单位国家:美国
- 项目类别:
- 财政年份:2019
- 资助国家:美国
- 起止时间:2019-10-01 至 2024-09-30
- 项目状态:已结题
- 来源:
- 关键词:4-aminoquinolineAdultAntimalarialsAntiparasitic AgentsAwardBabesia microtiBabesiosisBiguanidesBioavailableBiochemistryBiologicalBiologyBlindnessBloodBorrelia microtiCategoriesChemical ExposureChemicalsChemotherapy-Oncologic ProcedureChildChloroquineCollaborationsComplexDevelopmentDiseaseDrug DesignDrug toxicityEnzymesFetusFeverGlucosephosphate DehydrogenaseHIVHealthImmuneImmunologic Deficiency SyndromesIn VitroIndividualInfectionInjectableInvestigational TherapiesLaboratoriesLeadLegal patentLiverLyme DiseaseMalariaMalaria preventionMedicalMedical ResearchMedicineMethodsMitochondriaModernizationMolecularMulti-Drug ResistanceNeurologicNew EnglandOralParasite resistanceParasitesParasitologyPatientsPeer ReviewPersonsPharmaceutical PreparationsPharmacotherapyPlasmodium falciparumPregnant WomenPreventionPrevention strategyProdrugsQuinolonesResearchResearch InstituteRespirationRiskScientistSoldierTimeToxoplasma gondiiToxoplasmosisTransplant RecipientsTropical DiseaseUnited StatesUnited States Department of Veterans AffairsUnited States National Institutes of HealthVascular blood supplyVeteransVulnerable PopulationsWarWomanatovaquonecareerchemical synthesischemotherapyco-infectiondesigndisabilitydrug mechanismimprovedin vivomembermenmouse modelnovelnovel therapeuticspregnantprenatalprogramsresistant strainrespiratorysynergismtick transmissionvectorvirtual
项目摘要
Dr. Riscoe’s Experimental Chemotherapy laboratory focuses on the discovery, optimization and translational
development of antiparasitic drugs, especially drugs for treatment and prevention of malaria, a severe and
potentially fatal tropical disease. Using modern methods of drug design and chemical synthesis his laboratory
has successfully created 5 novel antimalarial “chemotypes” with exemplary molecules in each category that are
orally bioavailable and curative in mouse models of infection. The Portland VA and neighboring OHSU have filed
for patent protection on all 5 chemotypes which include: 1) Dual functional acridones with blood stage activity
that interact synergistically with many standard antimalarial agents, 2) 4-Aminoquinoline derivatives
(“Pharmachins”), designed to replace chloroquine, that are rapidly active against multidrug resistant strains of
Plasmodium falciparum parasites, 3) Quinolones (i.e., ELQ-300) that block parasite mitochondrial respiration
and act vs. the blood, liver, gametocyte, and vector stages of parasite development, 4) Prodrugs of ELQ-300 for
improved oral delivery and for injectable sustained-release and long-term protection against malaria, and 5)
Biguanides with enhanced synergy in combination with anti-respiratory antimalarial drugs such as atovaquone
and ELQ-300.
It is noteworthy that ELQs (e.g., ELQ-316) are also potent against other parasites including Toxoplasma
gondii and Babesia microti with proven activity demonstrated in vitro as well as in vivo. T. gondii is a eukaryotic
intracellular parasite estimated to have infected billions of people worldwide, placing them at risk for
toxoplasmosis. Fetuses and immune-compromised persons (e.g., HIV patients, transplant patients, and
individuals undergoing cancer chemotherapy) are susceptible to severe toxoplasmosis, which can be fatal or
lead to permanent ocular or neurologic disability. Even healthy people without immunodeficiency are susceptible
to ocular disease which may cause vision loss. B. microti causes babesiosis which is transmitted by ticks. It is
endemic in the New England region of the United States where it is called, “Nantucket Fever”. Like malaria and
toxoplasmosis, babesiosis is a potentially fatal infection and new and effective drugs are urgently needed. It is
noteworthy that B. microti is a common co-infection associated with Lyme disease and is regarded as the
foremost infectious risk to the U.S. blood supply.
The Portland VA’s Experimental Chemotherapy Lab also investigates drug mechanism of action by use of
methods that are traditional to the fields of biochemistry, chemical biology and molecular parasitology. Dr.
Riscoe’s laboratory receives support from the Department of Veterans Affairs, National Institutes of Health, and
the Medicines for Malaria Venture and he maintains an active collaboration with members of the Division of
Experimental Therapeutics at the Walter Reed Army Institute for Research. He continues to serve as an invited
reviewer for the US DOD’s Peer Reviewed Medical Research Program (PRMRP) and the NIH. The long-term
objective of Dr. Riscoe’s malaria research is to develop drugs that are inexpensive, safe and effective in
prevention and treatment of the most vulnerable populations, young children and pregnant women, and
ultimately to develop a cocktail of drugs that may be used to eradicate the disease.
Riscoe博士的实验化疗实验室专注于发现,优化和转化
开发抗寄生虫药物,特别是治疗和预防疟疾的药物,
利用现代药物设计和化学合成方法,他的实验室
成功地创造了5种新型抗疟“化学型”,每种化学型都有典型的分子,
口服生物利用度和治疗小鼠感染模型。波特兰VA和邻近的OHSU已经提交了
用于所有5种化学类型的专利保护,包括:1)具有血液阶段活性的双功能吖啶酮
与许多标准抗疟剂协同作用,2)4-氨基喹啉衍生物
(“Pharmachins”),旨在取代氯喹,其对多药耐药菌株具有快速活性,
恶性疟原虫寄生虫,3)喹诺酮类(即, ELQ-300),阻断寄生虫线粒体呼吸
4)ELQ-300的前药,
改善口服给药和注射缓释和长期保护免受疟疾,和5)
具有增强协同作用的双胍类与抗呼吸道感染抗疟药物如阿托伐醌组合
和ELQ-300。
值得注意的是,ELQ(例如, ELQ-316)也对其它寄生虫有效,包括弓形虫
弓形虫是一种真核生物,
据估计,这种细胞内寄生虫已经感染了全世界数十亿人,使他们面临感染的风险。
胎儿和免疫缺陷的人(例如, 艾滋病患者,移植患者,
接受癌症化疗的个体)易患严重弓形虫病,这可能是致命的,
导致永久性视力或神经系统残疾。即使没有免疫缺陷的健康人也易受影响
眼睛疾病,可能会导致视力下降。B. microti引起巴贝虫病,由蜱传播。它是
在美国的新英格兰地区流行,在那里它被称为“南图克特热”。 比如疟疾,
弓形虫病、巴贝虫病是一种潜在的致命感染,迫切需要新的有效药物。
值得注意的是,B. microti是与莱姆病相关的常见合并感染,
这是美国血液供应的最大风险。
波特兰VA的实验化疗实验室还通过使用
生物化学、化学生物学和分子寄生虫学领域的传统方法。
Riscoe的实验室得到了退伍军人事务部、国立卫生研究院和
他与疟疾药物研发司的成员保持着积极的合作,
沃尔特里德陆军研究所的实验治疗学。他继续作为一个邀请
美国国防部同行评审医学研究计划(PRMRP)和NIH的评审员。
Riscoe博士疟疾研究的目标是开发廉价、安全和有效的药物,
预防和治疗最脆弱人群、幼儿和孕妇,以及
最终开发出一种可以用来根除这种疾病的混合药物。
项目成果
期刊论文数量(0)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
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Michael Kevin RISCOE其他文献
Michael Kevin RISCOE的其他文献
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{{ truncateString('Michael Kevin RISCOE', 18)}}的其他基金
Development of a Sustained Release Injectable Formulation for Long-Term Delivery of ELQs
开发用于长期递送 ELQ 的缓释注射制剂
- 批准号:
10412947 - 财政年份:2019
- 资助金额:
-- - 项目类别:
Development of a Sustained Release Injectable Formulation for Long-Term Delivery of ELQs
开发用于长期递送 ELQ 的缓释注射制剂
- 批准号:
9816269 - 财政年份:2019
- 资助金额:
-- - 项目类别:
Optimizing ELQs for Treatment and Prevention of Malaria
优化 ELQ 以治疗和预防疟疾
- 批准号:
8776262 - 财政年份:2013
- 资助金额:
-- - 项目类别:
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