KR20200025906A - 펩신에 의해 특이적으로 분해되는 펩타이드 및 이를 포함하는 역류성 인후두염 진단용 키트 - Google Patents
펩신에 의해 특이적으로 분해되는 펩타이드 및 이를 포함하는 역류성 인후두염 진단용 키트 Download PDFInfo
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- KR20200025906A KR20200025906A KR1020180103899A KR20180103899A KR20200025906A KR 20200025906 A KR20200025906 A KR 20200025906A KR 1020180103899 A KR1020180103899 A KR 1020180103899A KR 20180103899 A KR20180103899 A KR 20180103899A KR 20200025906 A KR20200025906 A KR 20200025906A
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Abstract
Description
도 2는 본 발명에 따른 펩타이드 기반 역류성 인후두염 진단용 스트립의 작동 원리를 개략적으로 나타낸 도이다.
도 3은 본 발명에 따른 펩신 특이적으로 분해되는 아미노산 서열의 펩타이드, 이를 이용한 펩신 검출 원리 및 반응 시간에 따른 분해율을 나타낸 도이다.
도 4는 본 발명에 따른 펩신 특이적으로 분해되는 아미노산 서열에 대한 펩신 농도에 따른 분해능을 나타낸 도이다.
도 5는 본 발명에 따른 아미노산 서열의 타 효소 대비 펩신 특이적 분해를 나타낸 도이다.
도 6은 (A) 본 발명에 따른 펩신 특이적으로 분해되는 아미노산 서열의 펩타이드, 비색표지자로서 금 나노입자 및 금 펩신에 의해 분해된 펩타이드 단편과의 선택적 포획을 위한 올리고뉴클레오타이드를 포함하는 펩신 검출용 복합체 및 (B) 상기 복합체의 펩신 특이적 분해능을 나타낸 도이다.
도 7은 본 발명에 따른 펩신 특이적으로 분해되는 펩타이드가 펩신에 의해 분해된 경우 특정 단편을 선택적으로 검출하기 위한 (A) 말레이미드로 기능화된 펩신 특이적 펩타이드의 구조, (B) 상기 펩타이드의 기능화에 따른 특이적 결합력 및 (C) 상기 선택적 결합을 위한 pH의 최적화를 나타낸 도이다.
도 8은 본 발명에 따른 면역크로마토그래피을 이용하는 분석 스트립에 의한 펩신 검출을 나타낸 도이다.
Claims (14)
- 일말단에는 표지 물질 및 제1리간드가, 다른 말단에는 제2리간드가 결합된, 펩신에 의해 특이적으로 분해되는 펩타이드; 및
상기 제1리간드와 특이적으로 결합하는 제3리간드를 포함하여 유체의 흐름과 수직인 방향으로 소정의 폭을 갖도록 형성된 검사선(test line) 및 상기 제2리간드와 특이적으로 결합하는 제4리간드를 포함하여 상기 검사선과 일정 거리만큼 이격되어 평행하게 형성된 대조선(control line)을 포함하는 멤브레인 패드(membrane pad), 및 액상 검체를 최종적으로 수용하는 흡습 패드(absorption pad)로 구성되며, 상기 멤브레인 패드 및 흡습 패드가 일부 중첩된 형태로 연결된 면역크로마토그래피용 스트립을 포함하는 역류성 인후두염 진단용 키트로서,
상기 제1리간드와 제2리간드, 및 제3리간드와 제4리간드는 서로 상이하며, 제1리간드와 제4리간드 및 제2리간드와 제3리간드는 서로 결합하지 않도록 선택된 것인 키트.
- 제1항에 있어서,
상기 펩신에 의해 특이적으로 분해되는 펩타이드는 알라닌, 발린, 루신, 이소루신, 페닐알라닌, 티로신 및 트립토판으로 구성된 군으로부터 선택되는, 연속적으로 위치한, 2개의 소수성 아미노산을 포함하는 것인 키트.
- 제1항에 있어서,
상기 펩신에 의해 특이적으로 분해되는 펩타이드는 서열번호 1의 아미노산 서열을 갖는 것인 키트.
- 제1항에 있어서,
상기 면역크로마토그래피용 스트립은 검체 패드(sample pad), 반응 패드(reaction pad) 또는 둘 모두를 추가로 포함하는 것인 키트.
- 제4항에 있어서,
상기 반응 패드는 흐름통제 분리막, 발열판 또는 둘 모두를 추가로 포함하는 것인 키트.
- 제1항에 있어서,
상기 액상 검체는 타액을 함유하는 것인 키트.
- 역류성 인후두염의 발병이 의심되는 개체로부터 수집한 타액을, 청구항 제1항 내지 제6항 중 어느 한 항의 키트의 멤브레인 패드에 투입하여 검사선 및 대조선을 지나도록 흡습 패드 방향으로 전개시키는 제1단계;
검사선 및 대조선에서 표지 물질에 의한 신호를 확인하는 제2단계; 및
역류성 인후두염에 대해 검사선 및 대조선에서 신호가 검출되는 경우에 양성으로, 대조선에서만 신호가 검출되는 경우에 음성으로 판단하는 제3단계를 포함하는, 역류성 인후두염 진단을 위한 정보제공 방법.
- 제7항에 있어서,
제3단계에서 대조선으로부터 신호가 검출되지 않는 경우 진단이 유효하지 않은 것으로 판단하는 것인 정보제공 방법.
- 알라닌, 발린, 루신, 이소루신, 페닐알라닌, 티로신 및 트립토판으로 구성된 군으로부터 선택되는 2개의 소수성 아미노산이 연속적으로 위치하고, 상기 연속적으로 위치한 소수성 아미노산의 양말단에 각각 2 내지 10개의 아미노산이 추가된 일련의 펩타이드를 제조하는 제1단계; 및
상기 제1단계로부터 제조된 일련의 펩타이드를 펩신, 트립신, 아밀라아제, 라이소자임 또는 뮤신과 접촉시키고, 각 효소에 의한 분해여부를 확인하는 제2단계를 포함하는, 펩신에 의해 특이적으로 분해되는 펩타이드의 제조방법.
- 제9항에 있어서,
상기 펩타이드는 수가용성인 것인 제조방법.
- 제9항에 있어서,
상기 펩타이드는 역류성 인후두염 진단용 키트에 사용되는 것인 제조방법.
- GDFLMGRDMRK(서열번호 1), GDFLGGRDARK(서열번호 2) 또는 CGDFLMGRDMRK(서열번호 3)의 아미노산 서열을 갖는 펩타이드.
- 제12항에 있어서,
단백질 분해효소인 트립신, 또는 타액 내 존재하는 효소인 아밀라아제, 라이소자임 또는 뮤신에 의해 분해되지 않고, 펩신에 의해 특이적으로 분해되는 것인 펩타이드.
- 제12항에 있어서,
펩신에 의해 각각 GD(서열번호 4) 및 MGRDMRK(서열번호 5), GD(서열번호 4) 및 GGRDARK(서열번호 6), 또는 CGD(서열번호 7) 및 MGRDMRK(서열번호 5)의 2개 단편으로 절단되는 것인 펩타이드.
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