KR20120133408A - 리스테리아 모노사이토제네스 생균의 표면에 특이적으로 결합하는 dna 앱타머 및 이의 용도 - Google Patents
리스테리아 모노사이토제네스 생균의 표면에 특이적으로 결합하는 dna 앱타머 및 이의 용도 Download PDFInfo
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- KR20120133408A KR20120133408A KR1020110052012A KR20110052012A KR20120133408A KR 20120133408 A KR20120133408 A KR 20120133408A KR 1020110052012 A KR1020110052012 A KR 1020110052012A KR 20110052012 A KR20110052012 A KR 20110052012A KR 20120133408 A KR20120133408 A KR 20120133408A
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- Prior art keywords
- listeria monocytogenes
- dna
- dna aptamer
- aptamer
- binding
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Abstract
Description
도 2는 리스테리아 모노사이토제네스와 특이적으로 결합하는 DNA 앱타머를 선별하기 위한 Live cell SELEX 실험 모식도를 나타내는 것이다. (a) 과정은 리스테리아 모노사이토제네스와의 결합을 유도할 ssDNA 앱타머 제작 및 구조 형성과정이고; (b) 과정은 ssDNA와 결합을 유도할 리스테리아 모노사이토제네스 확보 과정이다. 상기의 (a) 및 (b) 과정에서 확보한 ssDNA 앱타머와 리스테리아 모노사이토제네스의 결합을 유도하고 리스테리아 모노사이토제네스의 표면에 결합한 ssDNA 앱타머만을 회수하는 과정, 회수 후 SELEX를 재진행할 경우 다시 (a), (b) 과정으로 돌아가 반복실험을 하고 SELEX의 마지막엔 회수된 ssDNA 앱타머를 T-vector에 클로닝함으로서 서열을 확인하는 과정을 포함한다.
도 3은 리스테리아 모노사이토제네스 표면 결합 DNA 앱타머의 제작을 위한 SELEX 과정에서 각 라운드에서 회수된 리스테리아 모노사이토제네스 표면 결합 DNA 앱타머의 농도를 나노드랍을 이용해 정량적으로 측정한 양을 나타낸 것이다.
도 4는 리스테리아 모노사이토제네스의 표면과 특이적인 결합력을 보이는 것으로 선별된 총 12개의 리스테리아 모노사이토제네스 표면 결합 DNA 앱타머의 2차 구조를 나타낸 것이다.
도 5는 스트렙트아비딘이 코팅된 SA 칩 표면에 리스테리아 모노사이토제네스 표면 결합 DNA 앱타머를 고정시키고 여기에 리스테리아 모노사이토제네스 생균을 결합시키는 과정을 나타낸 것이다.
도 6은 리스테리아 모노사이토제네스 표면 결합 DNA의 간이 검출 키트(kit)의 모식도를 나타낸 것이다. (a)는 리스테리아 모노사이토제네스 간이 검출 키트(kit)를 도식화한 것이다. (b)는 리스테리아 모노사이토제네스 간이 검출 키트(kit)의 사용 방법을 나타낸 것이다. 상기의 (a), (b)를 통하여 시료내의 리스테리아 모노사이토제네스를 신속하게 검출 가능하며, 리스테리아증이 의심되는 동물이나 사람의 피를 시료로 사용하는 경우 리스테리아증의 진단에도 활용할 수 있다.
8R (1 X 10 -2 ) | 9R (1 X 10 -2 ) | 10R (1 X 10 -2 ) | |
Efficiency(%) | 78.66 | 84.6 | 70.45 |
C(t) | 9.74 | 8.08 | 9.02 |
클론
명칭 |
서열
번호 |
선별된 서열 |
서열
크기 (bp) |
동일
서열 수 |
LMCA-1 | 서열번호 1 | TAGACGAATGTGCCCCGCGGTTTAGTTACGCTTGACATTGG | 41 | 1 |
LMCA-2 | 서열번호 2 | CGCTCCAGTATCAATGACTTACATCCCGTCAGCAATGTGG | 40 | 1 |
LMCA-3 | 서열번호 3 | CAGAACGGACCGAGTTTTATTTATTTTACTCCTACTCGAAC | 41 | 2 |
LMCA-4 | 서열번호 4 | CGAGTCGCAGTGAGACCACCTCTTGGCCCCGTTTACGAGG | 40 | 1 |
LMCA-5 | 서열번호 5 | TGGTCACAGGTAGTTGGTGCGTCCCTCTCCTAATACTACCG | 40 | 3 |
LMCA-6 | 서열번호 6 | ATGGAAGATGTGTCGTCTTCTCTTGCCGTGCCTGTACTCG | 40 | 1 |
LMCA-7 | 서열번호 7 | GCGGGTTTATAGGGTGAGATTTTGCAAAGTAGTTTGGAAG | 40 | 1 |
LMCA-8 | 서열번호 8 | AACAGGCCCATAATGTAGACGTTTTTGTGTAATGTGTCGG | 40 | 1 |
LMCA-9 | 서열번호 9 | CGATAGTAACGTAGAGATGAAGGCAGCCAGCGGGTCGTG | 39 | 2 |
LMCA-10 | 서열번호 10 | AAAGCCCTAGTGCGAGCGGAGTATCCTCACCAGGTGTAG | 39 | 1 |
LMCA-11 | 서열번호 11 | AAGCAATATTCTGTGCGTACGCGACCGTGGATACCGATCA | 40 | 1 |
LMCA-12 | 서열번호 12 | ATCGAACAAAGTGCCCATAGGTCAAGAAAGAAGTCTCTGC | 39 | 1 |
클론 명칭 | ng/㎕ | 클론 명칭 | ng/㎕ |
LMCA-1 | 250.5 | LMCA-7 | 243.8 |
LMCA-2 | 212.6 | LMCA-8 | 186.3 |
LMCA-3 | 263.9 | LMCA1-9 | 260.2 |
LMCA-4 | 253.1 | LMCA-10 | 280.7 |
LMCA-5 | 282.2 | LMCA-11 | 256.8 |
LMCA-6 | 273.0 | LMCA-12 | 190.4 |
클론 명칭 | Kd (nM) | 클론 명칭 | Kd (nM) |
LMCA-1 | 2.442 ± 0.027 | LMCA-7 | 5.971 ± 2.359 |
LMCA-2 | 11.131 ± 0.162 | LMCA-8 | 47.375 ± 1.357 |
LMCA-3 | 0.386 ± 1.841 | LMCA1-9 | 0.530 ± 0.004 |
LMCA-4 | 1.231 ± 0.051 | LMCA-10 | 0.147 ± 0.217 |
LMCA-5 | 0.0087 ± 6.517 | LMCA-11 | 1.054 ± 1.280 |
LMCA-6 | 0.266 ± 1.381 | LMCA-12 | 14.289 ± 0.651 |
시료 | C 검출 여부 | T 검출 여부 |
시료를 넣지 않은 경우 | - | - |
리스테리아 모노사이토제네스 비존재 시료 | + | - |
리스테리아 모노사이토제네스 존재 시료 | + | + |
리스테리아
모노사이토제네스
시료 ( CFU /㎖) |
검출 여부
(T) |
리스테리아
모노사이토제네스
시료 ( CFU /㎖) |
검출 여부
(T) |
5 X 10 | - | 5 X 105 | + |
5 X 102 | - | 5 X 106 | +++ |
5 X 103 | - | 5 X 107 | +++ |
5 X 104 | - | 5 X 108 | +++ |
Claims (8)
- 리스테리아 모노사이토제네스(Listeria monocytogenes) 생균의 표면에 특이적으로 결합하는 DNA 앱타머(aptamer).
- 제 1 항에 있어서, 상기 DNA 앱타머는 서열목록 제1서열 내지 제12서열 중 어느 하나에 개시된 염기서열과 90% 이상의 동일성을 갖는 염기서열을 갖는 올리고뉴클레오타이드인 것을 특징으로 하는 DNA 앱타머.
- 제 1 항에 있어서, 상기 DNA 앱타머는 서열목록 제1서열 내지 제12서열 중 어느 하나에 개시된 염기서열을 갖는 올리고뉴클레오타이드인 것을 특징으로 하는 DNA 앱타머.
- 제 1 항 내지 제 3 항 중 어느 한 항의 DNA 앱타머를 유효성분으로 포함하는 리스테리아 모노사이토제네스(Listeria monocytogenes) 생균의 검출용 조성물.
- 제 1 항 내지 제 3 항 중 어느 한 항의 DNA 앱타머를 유효성분으로 포함하는 리스테리아 모노사이토제네스(Listeria monocytogenes) 생균의 검출용 키트.
- 제 5 항에 있어서, 상기 키트는 DNA 앱타머가 칩상에 고정화된 칩 형태인 것을 특징으로 하는 키트.
- 제 5 항에 있어서, 상기 키트는 DNA 앱타머가 기판상에 고정화된 마이크로어레이 형태인 것을 특징으로 하는 키트.
- 다음의 단계를 포함하는 리스테리아 모노사이토제네스(Listeria monocytogenes) 생균의 검출 방법:
(a) 리스테리아 모노사이토제네스(Listeria monocytogenes) 생균을 함유하는 것으로 예상되는 시료와 제 1 항 내지 제 3 항 중 어느 한 항의 DNA 앱타머를 접촉시키는 단계; 및
(b) 상기 DNA 앱타머에 결합된 리스테리아 모노사이토제네스(Listeria monocytogenes) 생균을 확인하는 단계.
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