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Vaccines induce protective immunity against numerous infectious diseases. However, current vaccines have limited efficacy against challenging infections like tuberculosis, malaria and HIV. Protein vaccines are safe but, typically, they induce weak T cell immunity when administered alone. Therefore, special attention is being given to adjuvants, which are enhancers of immunity, that mature antigen presenting immunostimulatory dendritic cells (DCs). Our goal is to study in humans the mechanism whereby synthetic adjuvants, acting on defined pattern recognition receptors (PRR), enhance T and B cell immunity. In preclinical studies, the investigators' laboratory has found in mice that poly IC and its analog poly ICLC are superior adjuvants for T cell mediated immunity relative to other agonists for PRR. In this study the investigators propose to study the safety and the innate immune responses to poly ICLC in multiple blood cell types, including three different subsets of DCs when administered subcutaneously or intranasally to healthy volunteers. Poly ICLC is a stabilized double stranded RNA which has been extensively studied in humans with a favorable safety profile.
Allocation: Randomized, Endpoint Classification: Safety Study, Intervention Model: Single Group Assignment, Masking: Double Blind (Subject, Investigator), Primary Purpose: Basic Science
Hiltonol (poly ICLC)
The Rockefeller University
Published on BioPortfolio: 2014-08-27T03:18:02-0400
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Persons with no known significant health problems who are recruited to participate in research to test a new drug, device, or intervention as controls for a patient group. (from http://clinicalcenter.nih.gov/recruit/volunteers.html, accessed 2/14/2013)
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Hospital or other institutional ethics committees established to consider the ethical dimensions of patient care. Distinguish from ETHICS COMMITTEES, RESEARCH, which are established to monitor the welfare of patients or healthy volunteers participating in research studies.
Human experimentation that is not intended to benefit the subjects on whom it is performed. Phase I drug studies (CLINICAL TRIALS, PHASE I AS TOPIC) and research involving healthy volunteers are examples of nontherapeutic human experimentation.
A poly(ADP-ribose) polymerase that contains two ZINC FINGERS in its N-terminal DNA-binding region. It modifies NUCLEAR PROTEINS involved in chromatin architecture and BASE EXCISION REPAIR with POLY ADENOSINE DIPHOSPHATE RIBOSE.
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