Repetitive DNA sequence specific for mycobacterium tuberculosis to be used for the diagnosis of tuberculosis
First Claim
1. A complete, isolated and purified, repetitive DNA segment for use in detecting Mycobacterium tuberculosis complex in clinical material, said DNA segment being isolated in clones, λ
- KE55 and λ
KE58, and wherein said clones each contains 400 base-pair Sal1 fragments and 2 flanking Sal1 fragments.
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Accused Products
Abstract
A novel composition and/or methods for the diagnosis of tuberculosis wherein the composition comprises a repetitive DNA segment that is specific for members of the Mycobacterium tuberculosis complex. The DNA segment repeats in the chromosome of Mycobacterium tuberculosis complex, and is conserved in all copies of the chromosomes. A method comprises using an entire repetitive DNA sequence, or any part thereof, as a hybridization probe for the direct detection of Mycobacterium tuberculosis complex in clinical material. In another method, a smaller portion of an entire repetitive DNA sequence is amplified using polymerase chain reaction, yielding a 123 base-pair product.
59 Citations
10 Claims
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1. A complete, isolated and purified, repetitive DNA segment for use in detecting Mycobacterium tuberculosis complex in clinical material, said DNA segment being isolated in clones, λ
- KE55 and λ
KE58, and wherein said clones each contains 400 base-pair Sal1 fragments and 2 flanking Sal1 fragments. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
- KE55 and λ
-
10. A hybridization probe, subclone pDC92, for use in the direct detection of isolates of M. tuberculosis complex in clinical material, comprising a complete, isolated and purified, repetitive DNA segment in the chromosomes of M. tuberculosis complex.
Specification