发明名称 |
Method and apparatus for cancer screening |
摘要 |
A method and apparatus for detection of pteridine levels in a biological sample using CE-LIF which is useful for early cancer screening involving fully oxidizing pteridine compounds in a sample such as a urine sample, subjecting to CE-LIF to assess compound concentration, and compare to expected levels in for healthy or cancer-bearing patients. |
申请公布号 |
US9207205(B2) |
申请公布日期 |
2015.12.08 |
申请号 |
US201012971194 |
申请日期 |
2010.12.17 |
申请人 |
The Curators of the University of Missouri |
发明人 |
Ma Yinfa;Gibbons Stephen |
分类号 |
G01N27/447;G01N21/64;G01N33/52;G01N33/53 |
主分类号 |
G01N27/447 |
代理机构 |
Senniger Powers LLP |
代理人 |
Senniger Powers LLP |
主权项 |
1. A method for screening for cancer in a mammal, the method comprising:
obtaining a biological sample from the mammal; treating the biological sample with an oxidizing agent in a concentration sufficient such that at least about 90 wt % of concentration of oncopterin (N2-(3-aminopropyl) biopterin) in the biological sample is in its fully oxidized state; quantitatively measuring a concentration of oncopterin (N2-(3-aminopropyl) biopterin) in said biological sample by capillary electrophoresis-lased induced fluorescence by subjecting the sample to capillary electrophoresis using laser-induced fluorescence (CE-LIF) to cause the oxidized portion of said concentration of said oncopterin (N2-(3-aminopropyl) biopterin) to emit fluorescent light, detecting the emitted fluorescence light, and analyzing the emitted fluorescence light to determine the concentration of the oncopterin (N2-(3-aminopropyl) biopterin) in the biological sample; and comparing the concentration of oncopterin (N2-(3-aminopropyl) biopterin) in the sample to an expected concentration of oncopterin (N2-(3-aminopropyl) biopterin) for either a healthy or cancer-bearing mammal of the same species; wherein the CE-LIF comprises directing laser light through a filter, a focal lens, and an iris of a first optical system and into an electrophoresis capillary containing the biological sample to irradiate and cause fluorescence from the biological sample; and receiving fluorescence emission from the biological sample through a second optical system comprising a confocal lens having a magnification greater than 20× and an iris which focus emitted fluorescence onto a photomultiplier tube as a light collection device for collecting fluorescent light emitted from the pteridine in the biological sample. |
地址 |
Columbia MO US |