KR101636316B1 - 미세유체 분리장치, 이를 이용한 분리방법 및 이를 포함하는 혈액 내 순환희소세포 분리키트 - Google Patents
미세유체 분리장치, 이를 이용한 분리방법 및 이를 포함하는 혈액 내 순환희소세포 분리키트 Download PDFInfo
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Abstract
본 발명은 혈액 시료 내 순환희소세포(Circulating rere cells, CRC), 구체적으로는 순환종양세포(Circulating tumor cells, CTC)를 수득하기 위하여 백혈구를 제거하는데 효과적으로 적용될 수 있다.
Description
도 2는 본 발명의 만곡 채널(120) 및 확장 채널(130)이 형성된 혼합 채널(100)의 모식도이다.
도 3은 본 발명의 인큐베이션 채널(200)의 모식도이다.
도 4는 본 발명의 미세유체 분리장치를 이용한 분리방법(B)에 대한 흐름도(flowchart)이다.
도 5의 좌측은 실시예 1의 실험에 따라 측정된 결과이며, 도 5의 우측은 혼합 유체가 확장 채널(130) 내에서 거동하는 모습을 촬영한 사진이다.
도 6은 실시예 2의 실험에 따라 자성나노입자 없이 시료만을 주입하였을 때의 주입 유속에 따른 시료 회수율을 나타낸 그래프이다.
도 7은 실시예 3의 실험에 따라 주입 유속과 백혈구 농도에 따른 백혈구 제거율을 나타낸 그래프이다.
도 8은 실시예 4의 실험에 따라 일정 백혈구 농도의 시료 내에 포함된 암세포(MCF-7 cells)의 개수에 따른 암세포 회수율 및 순도를 나타낸 스피킹(spiking) 실험의 결과표이다.
B : 미세유체 분리장치를 이용한 분리방법
100 : 혼합 채널
110 : 유입구
111 : 자성나노입자 유입구
112 : 시료 유입구
120 : 만곡 채널
121 : 만곡부
130 : 확장 채널
200 : 인큐베이션 채널
210 : 제1 체류부
300 : 분리 채널
310 : 자성체
320 : 배출구
330 : 제2 체류부
Claims (23)
- 자성나노입자(Magnetic nanoparticle, MNP)와 백혈구가 결합된 MNP복합체를 형성하고, 자기력을 이용해 상기 MNP복합체를 포획하여 분리하기 위한 미세유체 분리장치(A)에 있어서,
상기 미세유체 분리장치(A)는 혼합 채널(100), 인큐베이션(incubation) 채널(200) 및 분리 채널(300)이 순차적으로 연결되어 소통되도록 형성되며,
상기 혼합 채널(100)은 상류 측에 구비되는 적어도 하나 이상의 유입구(110) 및 상기 유입구(110)와 소통되며 적어도 둘 이상의 만곡부(121)가 형성된 파동(wave) 형상의 만곡 채널(120)을 포함하고,
상기 인큐베이션 채널(200)은 소정 구간 동안 채널의 단면적이 확장된 제1 체류부(210)를 포함하며,
상기 분리 채널(300)은 채널 일 측에 구비되는 적어도 하나 이상의 자성체(310) 및 하류 측에 구비되는 배출구(320)를 포함하고,
상기 분리 채널(300)은,
상기 MNP복합체의 체류 시간 및 체류 공간이 확보되도록 소정 구간 동안 채널의 단면적이 확장된 복수의 제2 체류부(330)가 직렬로 연결되고,
상기 분리 채널(300)에서,
상기 자성체(310)는 상기 분리 채널(300)의 제2 체류부(330) 상부와 하부 외측 면에 복수 개가 장착되는 것을 특징으로 하는 미세유체 분리장치. - 제1항에 있어서,
상기 혼합 채널(100)은,
상기 만곡 채널(120) 상에 형성되며, 소정 구간 동안 채널의 너비가 확장된 적어도 하나 이상의 확장 채널(130)을 더 포함하는 것을 특징으로 하는 미세유체 분리장치. - 제2항에 있어서,
상기 혼합 채널(100)에서,
상기 만곡 채널(120)의 너비와 상기 확장 채널(130)의 너비의 비가 1:6 ~ 1:7인 것을 특징으로 하는 미세유체 분리장치. - 제2항에 있어서,
상기 확장 채널(130)은 상기 만곡 채널(120) 상에 6~8 군데 형성되는 것을 특징으로 하는 미세유체 분리장치. - 제2항에 있어서,
상기 확장 채널(130)은 상기 만곡 채널(120) 상에 형성되되, 상기 만곡부(121)가 다음 만곡부(121)로 전환되는 지점에 형성되는 것을 특징으로 하는 미세유체 분리장치. - 제1항에 있어서,
상기 혼합 채널(100)의 유입구(110)는 자성나노입자 유입구(111) 및 시료 유입구(112)를 포함하는 것을 특징으로 하는 미세유체 분리장치. - 제1항에 있어서,
상기 인큐베이션 채널(200)에서,
상기 제1 체류부(210) 단면적과 상기 혼합 채널(100)의 만곡 채널(120) 단면적의 비가 1000:1 ~ 1500:1 인 것을 특징으로 하는 미세유체 분리장치. - 삭제
- 삭제
- 미세유체 분리장치(A)를 이용하여 자성나노입자(MNP)와 백혈구가 결합된 MNP복합체를 형성하고, 자기력을 이용해 상기 MNP복합체를 포획하여 분리하기 위한 분리방법(B)에 있어서,
상기 미세유체 분리장치(A)의 유입구(110)로 시료와 자성나노입자를 주입하는 단계(S10);
주입된 시료와 자성나노입자가 상기 미세유체 분리장치(A)의 혼합 채널(100) 내를 흐르며 혼합 및충돌하여 MNP복합체를 형성하는 단계(S20);
형성된 MNP복합체가 상기 미세유체 분리장치(A)의 인큐베이션 채널(200) 내를 흐르며 상기 MNP복합체의 결합력이 강화되는 단계(S30);
상기 MNP복합체가 채널 일 측에 구비되는 적어도 하나 이상의 자성체(310)가 구비되고, 상기 MNP복합체의 체류 시간 및 체류 공간이 확보되도록 소정 구간 동안 채널의 단면적이 확장된 복수의 제2 체류부(330)가 직렬로 연결되고, 자성체(310)가 상기 복수의 분리 채널(300) 각각의 상기 제2 체류부(330)의 상부와 하부 외측 면에 복수 개가 장착된 상기 미세유체 분리장치(A)의 분리 채널(300) 내를 흐르며 상기 자성체(310)에 포획되는 단계(S40); 및
상기 MNP복합체가 제거된 시료가 상기 분리 채널(300)의 배출구(320)를 통해 배출되는 단계(S50);
를 포함하는 미세유체 분리장치를 이용한 분리방법. - 제10항에 있어서,
상기 혼합 채널(100)은 적어도 둘 이상의 만곡부(121)가 형성된 파동 형상의 만곡 채널(120)을 포함하여,
MNP복합체 형성단계(S20)에서 주입된 시료와 자성나노입자가 상기 만곡 채널(120)로 인해 형성되는 제1 와류(vortex)에 의해 충돌하는 것을 특징으로 하는 미세유체 분리장치를 이용한 분리방법. - 제11항에 있어서,
상기 혼합 채널(100)은, 상기 만곡 채널(120) 상에 형성되며 소정 구간 동안 채널의 너비가 확장된 적어도 하나 이상의 확장 채널(130)을 더 포함하여,
MNP복합체 형성단계(S20)에서 주입된 시료와 자성나노입자가 상기 확장 채널(130)로 인해 형성되는 제2 와류에 의해 충돌하는 것을 특징으로 하는 미세유체 분리장치를 이용한 분리방법. - 삭제
- 삭제
- 삭제
- 제10항에 있어서,
상기 인큐베이션 채널(200)은 소정 구간 동안 채널의 단면적이 확장된 제1 체류부(210)를 포함하여,
MNP복합체 결합력 강화단계(S30)에서 형성된 MNP복합체가 상기 제1 체류부(210) 내에서 소정 기간 동안 체류하면서 상기 MNP복합체의 결합력이 강화되는 것을 특징으로 하는 미세유체 분리장치를 이용한 분리방법. - 삭제
- 삭제
- 삭제
- 제10항에 있어서,
상기 시료 및 자성나노입자 주입단계(S10)에서,
상기 시료 및 자성나노입자를 300~400 ㎕/min의 유속으로 주입하는 것을 특징으로 하는 미세유체 분리장치를 이용한 분리방법. - 삭제
- 삭제
- 제1항 내지 제7항 중 어느 한 항의 미세유체 분리장치(A)를 포함하는 혈액 시료 내 순환희소세포 분리키트.
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