Multi-antigen peptide assay for the serodiagnosis of Lyme disease

Award Information
Agency:
Department of Health and Human Services
Branch
n/a
Amount:
$2,066,278.00
Award Year:
2009
Program:
SBIR
Phase:
Phase II
Contract:
2R44AI074092-03
Award Id:
85314
Agency Tracking Number:
AI074092
Solicitation Year:
n/a
Solicitation Topic Code:
n/a
Solicitation Number:
n/a
Small Business Information
BIOPEPTIDES, INC., 18 WOODHULL RD, EAST SETAUKET, NY, -
Hubzone Owned:
N
Minority Owned:
N
Woman Owned:
N
Duns:
140704532
Principal Investigator:
MARIA GOMESSOLECKI
(901) 572-7330
MGOMESSO@UTMEM.EDU
Business Contact:
RAYMOND DATTWYLER
() -
Research Institution:
n/a
Abstract
DESCRIPTION (provided by applicant): Lyme Disease (LD) is the most common vector-borne infectious disease in the United States and remains a significant public health concern. The laboratory diagnosis of LD depends on the demonstration of antibodies again st Borrelia burgdorferi. Current serologic assays are not specific enough and not sensitive in early LD. New assays are needed and we plan to fill this unmet need. Our main objective is to produce new sensitive and specific peptide based assays for the ser odiagnosis of LD. In Phase I we made excellent progress in defining components for a new serologic assay: we developed IR6 peptides with a broader ability to detect antibody reactivity among patients infected with spirochetes expressing different VlsE sequ ences; of the 17 known US OspC groups we have identified four (B, F, I, and K) as potential targets for epitope mapping; and we evaluated the ability of a multi-antigenic peptide comprised of sequences from OspC (10 residues), FlaB (13 residues) and VlsE-I R6 (17 residues) to bind antibody from individuals with LD. In this Phase II proposal, we will further optimize the peptides containing epitopes from OspC, FlaB and IR6 and will validate new immunoassays in both ELISA and rapid lateral flow point-of-care ( POC) formats. An assay with greater specificity and improved sensitivity for detection of B. burgdorferi antibodies in the earliest stages of the disease, could lead to the development of a single-tier test capable of replacing the currently recommended tw o-tier paradigm. More importantly, given that early diagnosis and treatment of LD prevents illness progression and sequellae, the development of this test will make an important contribution to improvement of human health. PUBLIC HEALTH RELEVANCE: Lyme disease, the most common vector borne infectious disease in the United States affects multiple organ systems. Although prompt diagnosis and treatment prevents or limits serious injury to the systems affected, current sero- diagnostics for Lyme disease lack sensitivity in early disease and are not specific enough to be used alone. Our objective is to replace today's assays with a new multi-antigen peptide test. Because of greater specificity and improvement to the assay's sensitivity, this approach could lea d to the development of a single tier assay to detect antibodies against any of the three pathogenic genospecies ofB. burgdorferi in both early and late Lyme disease.

* information listed above is at the time of submission.

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