Device for preparation and analysis of nucleic acids
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
C12N-015/10
B01L-003/00
C12Q-001/6806
출원번호
US-0889374
(2014-05-07)
등록번호
US-10087440
(2018-10-02)
국제출원번호
PCT/US2014/037197
(2014-05-07)
국제공개번호
WO2014/182847
(2014-11-13)
발명자
/ 주소
Lofquist, Alan K.
Battrell, C. Frederick
Bouzek, Heather K.
출원인 / 주소
Micronics, Inc.
대리인 / 주소
Seed Intellectual Property Law Group LLP
인용정보
피인용 횟수 :
0인용 특허 :
203
초록▼
An integrated “lab-on-a-chip” microfluidic device performs nucleic acid sample preparation and diagnostic analysis from test samples containing cells and/or particles. The device analyzes DNA or RNA targets, or both, from a common test sample. Dried and/or liquid reagents necessary for nucleic acid
An integrated “lab-on-a-chip” microfluidic device performs nucleic acid sample preparation and diagnostic analysis from test samples containing cells and/or particles. The device analyzes DNA or RNA targets, or both, from a common test sample. Dried and/or liquid reagents necessary for nucleic acid sample preparation and analysis are contained on the device, such that the device only requires addition of test sample. Clay mineral and alkaline buffer reagents are employed for overcoming the problems of nucleic acid degradation and contamination during sample preparation. The device may include a composite filter to separate plasma or serum from other blood constituents when the test sample is a blood product. The microfluidic device utilizes a plurality of microfluidic channels, inlets, valves, membranes, pumps, and other elements arranged in various configurations to manipulate the flow of the liquid sample, in particular, in order to prepare nucleic acids and perform further diagnostic analysis.
대표청구항▼
1. A microfluidic device comprising: a microfluidic channel having a first end and a second end;a sample inlet fluidly connected to the first end of the microfluidic channel and configured for receiving a test sample;a clay treatment chamber fluidly connected to said microfluidic channel, wherein sa
1. A microfluidic device comprising: a microfluidic channel having a first end and a second end;a sample inlet fluidly connected to the first end of the microfluidic channel and configured for receiving a test sample;a clay treatment chamber fluidly connected to said microfluidic channel, wherein said clay treatment chamber contains a clay mineral reagent;a sample lysis chamber fluidly connected to said clay treatment chamber, wherein said sample lysis chamber contains an alkaline solution;one or more sample nucleic acid amplification or detection wells, or combinations thereof, fluidly connected to said sample lysis chamber; andand one or more sample outlets,wherein said clay treatment chamber is upstream of said sample lysis chamber and said one or more sample nucleic acid amplification or detection wells, and wherein said device is configured such that said test sample exits said clay treatment chamber and enters said sample lysis chamber, thereby contacting said test sample with said alkaline solution to release target nucleic acids. 2. The microfluidic device of claim 1, wherein the clay mineral comprises a kaolinite, smectite, or illite clay mineral. 3. The microfluidic device of claim 1, wherein the clay mineral comprises talc. 4. The microfluidic device of claim 1, wherein the clay mineral comprises halloysite. 5. The microfluidic device of claim 1, wherein the clay mineral comprises bentonite. 6. The microfluidic device of claim 1, wherein the clay mineral comprises a synthetic clay mineral. 7. The microfluidic device of claim 6, wherein the synthetic clay mineral is laponite. 8. The microfluidic device of claim 1, wherein the alkaline solution comprises KOH, NaOH, or LiOH. 9. The microfluidic device of claim 8, wherein the alkaline solution comprises KOH. 10. The microfluidic device of claim 1, further comprising a neutralization chamber downstream of the lysis chamber, wherein the neutralization chamber contains an acidic reagent. 11. The microfluidic device of claim 10, wherein the acidic solution comprises HCl, C2H4O2,or H2SO4. 12. The microfluidic device of claim 1, wherein the test sample comprises one or more infectious agents. 13. The microfluidic device of claim 12, wherein the one or more infectious agents are viral agents. 14. The microfluidic device of claim 1, wherein the test sample comprises at least two viral agents. 15. The microfluidic device of claim 1, wherein the test sample comprises a DNA virus and an RNA virus. 16. The microfluidic device of claim 15, wherein the DNA virus is HBV. 17. The microfluidic device of claim 15, wherein the RNA virus is HCV or HIV. 18. The microfluidic device of claim 1, wherein the test sample is selected from the group consisting of blood, plasma, serum, urine, saliva, sputum, respiratory lavage, tears, and tissue swabs. 19. The microfluidic device of claim 1, wherein the test sample is selected from the group consisting of blood, plasma, and serum. 20. The microfluidic device of claim 1, further comprising an on-device pump fluidly connected to the second end of the microfluidic channel. 21. The microfluidic device of claim 1, further a comprising a composite membrane interposed between the sample inlet and the first end of the microfluidic channel, wherein the composite membrane is capable of removing selected particles from blood. 22. The microfluidic device of claim 21, wherein the composite membrane comprises a material that activates blood coagulation. 23. The microfluidic device of claim 22, wherein the composite membrane comprises a glass filter.
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