Rapid point-of-care diagnostic for bioterrorism "A" agents and Pandemic influenza

描述（由申请人提供）：世界各地的恐怖袭击需要社会继续投资于强大的防御这些不可预测和致命的事件。被确定为构成最大潜在威胁的感染病原体（“A”类病原体）包括大天花病毒（天花）、炭疽芽孢杆菌（炭疽）、鼠疫耶尔森菌（鼠疫）、肉毒杆菌毒素（肉毒杆菌中毒）、土拉菌弗朗西斯菌（土拉菌血症）和一组引起出血热的RNA病毒。另一个令人严重关切的病原体是流感（“C”类）。甲型和乙型流感病毒每年在世界范围内造成数十万人死亡，并使社会在发病率和社会混乱方面损失数百亿至数千亿美元。人们还对禽流感的鸟对人传播和可能的人对人传播感到担忧。恐怖分子可以利用流感抗原性的灵活性，设计“转移”更致命的菌株，从而导致全球大流行。

DESCRIPTION (provided by applicant): The terrorist attacks around the world necessitate society's continued investment in a strong defense against these unpredictable and deadly events. Infectious agents identified to pose the greatest potential threat (Category "A" agents) include Variola major (smallpox), Bacillus anthracis (anthrax), Yersinia pestis (plague), Clostridium botulinum toxin (botulism), Francisella tularensis (tularaemia), and a group of RNA viruses that cause hemorrhagic fevers (VHFs). Another agent of grave concern is influenza (Flu) (Category "C"). Flu A and B viruses kill hundreds of thousands each year world wide and cost society tens to hundreds of billion dollars in morbidity and societal disruption. Additional concern exists over bird-to-human spread of Flu and the potential adaptation for human-to-human spread. Terrorist could take advantage of Flu's antigenic flexibility and engineer "shifted" more virulent strains capable of causing worldwide pandemics. Current diagnostic assays are directed to the common human isolates of Flu A (H1N1 and H3N2) and Flu B, but no assay is available to detect all of the avian antigenic varieties of Flu A (16 HA types, 9 N types). Our laboratory has pioneered a flexible, rapid, sensitive, and specific method of simultaneously detecting multiple pathogens. Our multiplex PCR-EHA tests (Hexaplex, Pneumoplex, Adenoplex, SARS/Coronaplex, etc.) are used widely around the world. We have recently developed two BioTplex assays that detect many (15) category "A" agents. However, new methods of amplified DNA detection (electronic microarrays) and nucleic acid purification now allow for the development of a single "point-of-care" device that may enhance the speed, flexibility, throughput, and cost effectiveness of multiplex assays. The Specific Aims of this application are: 1) Chemistry, we will select, optimize, and integrate sample preparation chemistry, multiplex PCR amplification systems, and electronic microarray methods to detect all antigenic variants of Flu A/B (pandemic Flu assay) and the majority of category "A" bioterrorism agents (BioT assay) in an open platform mode (separate equipment for each function); 2) Feasibility, to determine performance characteristics of the 3 modules in small pre-clinical studies using previously collected clinical samples; 3) Automation, miniaturize, integrate, and simplify the chemistry and mechanisms of SA#1 to create 3 modules and then a fully integrated single device (prototype); 4) Process development, ensure manufacturability at a reasonable cost (e.g., critical reagents, specifications, test methods, suppliers, stability, and formulation into components); 5) Pre-Clinical study, test the clinical sensitivity and specificity of the newly developed assays, compared to non-molecular methods and our "gold standard" not integrated molecular assays (PCR-EHA) on 1200 previously collected samples. These new assays, in an integrated single device, may allow cost effective, point-of-care diagnosis within 1-2 hrs in an outpatient setting. These goals are responsive to a recent NIAID announcement for High-Priority influenza (NOT-AI-05-013) and bio-threat (RFA AI-05-019) research.