Fingerprinting bacterial strains using repetitive DNA sequence amplification
First Claim
1. A method for identifying a species of bacteria in a sample, comprising the steps of:
- amplifying DNA between interspersed, non-coding BOX repetitive sequences in a sample containing said bacteria byadding an outwardly-directed BOX primer pair to said sample,hybridizing primers of said primer pair to the interspersed, non-coding BOX repetitive DNA sequences in the bacterial DNA andextending said primers outwardly from one hybridizable interspersed, non-coding, BOX repetitive sequence to another hybridizable interspersed, non-coding BOX repetitive sequence;
separating the extension products generated in the amplification step by size; and
determining the specific species of bacteria by measuring the pattern of sized extension products.
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Abstract
Oligonucleotide primers and methods for identifying strains of bacteria by genomic fingerprinting are described. The methods are applicable to a variety of samples. The testing procedure includes amplifying the bacterial DNA in the sample to be tested by adding a pair of outwardly-directed primers to the sample. The primers are capable of hybridizing to repetitive DNA sequences in the bacterial DNA and extending outwardly from one hybridizable repetitive sequence to another hybridizable repetitive sequence. After amplification the extension products are separated by size and the specific strain of bacteria is determined by measuring the pattern of sized extension products. The procedure to identify strains of bacteria by fingerprinting has a variety of uses including: identifying bacteria in infections, agriculture and horticulture plots, bioremediation, food monitoring, production monitoring and quality assurance and quality control.
62 Citations
113 Claims
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1. A method for identifying a species of bacteria in a sample, comprising the steps of:
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amplifying DNA between interspersed, non-coding BOX repetitive sequences in a sample containing said bacteria by adding an outwardly-directed BOX primer pair to said sample, hybridizing primers of said primer pair to the interspersed, non-coding BOX repetitive DNA sequences in the bacterial DNA and extending said primers outwardly from one hybridizable interspersed, non-coding, BOX repetitive sequence to another hybridizable interspersed, non-coding BOX repetitive sequence; separating the extension products generated in the amplification step by size; and determining the specific species of bacteria by measuring the pattern of sized extension products. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 28, 30, 31, 32, 33, 34, 35, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 64, 65, 66, 67, 71, 72)
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13. A method for differentiating a strain in the same species of bacteria, comprising the steps of:
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amplifying DNA between interspersed, non-coding BOX repetitive sequences in a sample containing said bacteria by adding a pair of outwardly-directed BOX primers to said sample, said primers hybridizing to BOX repetitive DNA sequences in the bacterial DNA and extending outwardly from one hybridizable BOX repetitive sequence to another hybridizable BOX repetitive sequence; separating the extension products generated in the amplification step by size; and determining the specific strain of bacteria by measuring the pattern of sized extension products. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 29, 36, 74, 75, 76, 77, 78, 79, 80, 81, 82, 83, 84, 85, 86, 87, 88, 89, 90, 91, 92, 93, 94, 95, 96, 97, 98, 99, 100, 101, 102, 103, 104, 105, 106, 107, 108, 109, 110, 111, 112, 113)
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- 26. A kit for determining the identity of a strain of bacteria, comprising a container having outwardly-directed PCR primer pairs to interspersed, non-coding, BOX repetitive sequences in said bacteria.
- 68. A kit for determining the identity of a species of bacteria, comprising a container having outwardly-directed PCR primer pairs to interspersed, non-coding, BOX repetitive sequences in said bacteria.
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70. As a composition of matter the DNA oligonucleotide selected from the group consisting of SEQ. ID. NOS. 61, 62 and 63.
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73. A method for identifying a species of bacteria, comprising the steps of:
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amplifying DNA between interspersed, non-coding repetitive sequences in a sample containing said bacteria by adding to said sample a BOX primer selected from the group consisting of SEQ. ID. NOs. 61, 62 and 63, wherein said primer hybridizes to the interspersed, non-coding repetitive sequence in either of the complementary strands of the DNA and wherein the hybridized primer extends from one interspersed, non-coding repetitive sequence across non-repetitive DNA to another interspersed, non-coding repetitive sequence and wherein said extension product hybridizes to the primer for generations of further extension products; separating the extension products by size; and determining the specific strain of bacteria by measuring the pattern of sized extension products.
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Specification