Screen for Isoprenoid Production in M. tuberculosis

Award Information
Agency:
Department of Health and Human Services
Branch
n/a
Amount:
$109,120.00
Award Year:
2003
Program:
SBIR
Phase:
Phase I
Contract:
1R43AI053929-01
Award Id:
65924
Agency Tracking Number:
AI053929
Solicitation Year:
n/a
Solicitation Topic Code:
n/a
Solicitation Number:
n/a
Small Business Information
ECHELON BIOSCIENCES, INC., 675 ARAPEEN DR, STE 302, SALT LAKE CITY, UT, 84108
Hubzone Owned:
N
Minority Owned:
N
Woman Owned:
N
Duns:
n/a
Principal Investigator:
MARK BROWN
(801) 298-0455
MBROWN@ECHELON-INC.COM
Business Contact:
JOHN WIRTHLIN
(801) 588-0455
JWIRTHLIN@ECHELON-INC.COM
Research Institution:
n/a
Abstract
DESCRIPTION (provided by applicant): Isoprenoid compounds form a large ubiquitous class of natural products that fulfill a wide variety of essential cellular functions in all living organisms. In eukaryotes, isoprenoid compounds are synthesized by a mevalonate (MVA) dependent pathway. However, in many bacteria, these compounds are synthesized by an alternative, MVA-independent route whose first committed intermediate is 2-methylerythritol 4-phosphate (MEP). Both pathways converge at isopentenyl diphosphate (IPP) and subsequent steps are similar in all organisms. Since the MEP pathway is absent in mammals, it is considered an attractive target for the development of novel antibiotics. The pathogen, M. tuberculosis belongs to the MEP pathway class of organisms. The applicants will prepare a transgenic bacterial E. coli host cell whose genome contains disruptions in a first endogenous gene in the MEP pathway and a second endogenous gene which is located downstream of the first gene in the MEP pathway. A transgene from M. tuberculosis that functionally replaces the disrupted downstream gene will be cloned into the cell. The growth of the host cell in the presence of test agent is then compared to a control culture to determine the activity of the test agent. Where the test agent renders the bacterial host cell nonviable on media containing a chemical supplement to relieve the 1-deoxy-D-xylulose-5-phosphate (DXP) block and viable on the media containing MVA indicates that the test agent has the potential to be an effective antibacterial against M. tuberculosis.

* information listed above is at the time of submission.

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