JP6659702B2 - 酸化還元反応の連結による質量の検出 - Google Patents
酸化還元反応の連結による質量の検出 Download PDFInfo
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- G01N33/50—Chemical analysis of biological material, e.g. blood, urine; Testing involving biospecific ligand binding methods; Immunological testing
- G01N33/53—Immunoassay; Biospecific binding assay; Materials therefor
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- G01N29/02—Analysing fluids
- G01N29/022—Fluid sensors based on microsensors, e.g. quartz crystal-microbalance [QCM], surface acoustic wave [SAW] devices, tuning forks, cantilevers, flexural plate wave [FPW] devices
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- G—PHYSICS
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- G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
- G01N29/34—Generating the ultrasonic, sonic or infrasonic waves, e.g. electronic circuits specially adapted therefor
- G01N29/348—Generating the ultrasonic, sonic or infrasonic waves, e.g. electronic circuits specially adapted therefor with frequency characteristics, e.g. single frequency signals, chirp signals
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- G—PHYSICS
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- G01N33/48—Biological material, e.g. blood, urine; Haemocytometers
- G01N33/50—Chemical analysis of biological material, e.g. blood, urine; Testing involving biospecific ligand binding methods; Immunological testing
- G01N33/53—Immunoassay; Biospecific binding assay; Materials therefor
- G01N33/543—Immunoassay; Biospecific binding assay; Materials therefor with an insoluble carrier for immobilising immunochemicals
- G01N33/54366—Apparatus specially adapted for solid-phase testing
- G01N33/54373—Apparatus specially adapted for solid-phase testing involving physiochemical end-point determination, e.g. wave-guides, FETS, gratings
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- G—PHYSICS
- G01—MEASURING; TESTING
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- G—PHYSICS
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- G01N2291/02—Indexing codes associated with the analysed material
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Description
本願は、2014年9月15日に提出された米国特許仮出願第62/050,585号の恩恵を主張するものであり、この仮出願は、本明細書に示す開示と矛盾しない範囲でその全内容が参照により本明細書に組み込まれる。
Claims (16)
- 試料中の解析物を検出する方法であって、以下の工程:
圧電薄膜共振器(TFBAR)の表面の近くに、酸化還元解析物、1種以上の中間電子移動剤、可溶性沈殿前駆体、および任意あるいは必要に応じて1種以上の酸化還元補因子を含む混合物を導入する工程;
ここで、前記1種以上の中間電子移動剤、前記任意あるいは必要な補因子、および前記可溶性沈殿前駆体の存在下、前記酸化還元解析物が、前記可溶性沈殿前駆体を酸化還元して前記TFBARの表面に沈殿する沈殿分子を生成する、及び
前記TFBARの表面に加えられた質量を測定する工程;
を含む、方法。 - 前記TFBARの表面に前記中間電子移動剤のうちの少なくとも1種以上が固定される、請求項1に記載の方法。
- 前記中間電子移動剤のうちの少なくとも1種は前記解析物に対して選択的である、請求項1または2に記載の方法。
- 前記電子移動剤のうちの少なくとも1種は前記可溶性沈殿前駆体に対して選択的である、請求項1〜3のいずれか一項に記載の方法。
- 前記混合物は、少なくとも2種の中間電子移動剤を含み、前記中間電子移動剤の少なくとも1種は、前記解析物に対して選択的な酵素であり、前記電子移動剤の少なくとも1種は前記可溶性沈殿前駆体に対して選択的である、請求項1〜4のいずれか一項に記載の方法。
- 試料中の酵素の活性または存在を検出する方法であって、以下の工程:
1種の標的酸化還元酵素、前記標的酸化還元酵素に対する1種以上の酸化還元基質、1種以上の中間電子移動剤、可溶性沈殿前駆体、および必要に応じて1種以上の酸化還元補因子を含む混合物を圧電薄膜共振器(TFBAR)の近くに導入する工程;および
前記TFBARの表面に加えられた質量を測定する工程;
を含み、ここで、前記1種以上の酸化還元基質および前記1種以上の中間電子移動剤、任意あるいは必要な補因子、および前記可溶性沈殿前駆体の存在下、前記酸化還元酵素が、前記可溶性沈殿前駆体を酸化還元して、前記TFBARの表面に沈殿する沈殿分子を生成する、方法。 - 前記中間電子移動剤のうちの少なくとも1種以上は、前記TFBARの表面に固定される、請求項6に記載の方法。
- 前記電子移動剤のうちの少なくとも1種は、前記可溶性沈殿前駆体に対して選択的である、請求項6または7に記載の方法。
- 前記TFBARの表面に加えられた質量を測定する工程が、
前記TFBARに、前記圧電共振器の共鳴帯域内にある900MHz以上の周波数を有する入力電気信号を連結すること、
前記入力電気信号を前記TFBAR全体に送信して、所定周波数を有する出力電気信号を生成すること、
前記TFBARから前記出力電気信号を受信すること、および
前記TFBARの表面に前記沈殿物が沈殿することにより生じる前記出力電気信号の相シフトの変化を決定すること、
を含む、請求項1〜8のいずれか一項に記載の方法。 - 前記相シフトの変化は、挿入係数相シフトまたは反射係数相シフトの変化である、請求項9に記載の方法。
- 前記TFBARの表面に加えられた質量を測定する工程が、
前記TFBARを作動させて、900MHz以上の周波数で振動させること、
前記TFBARの振動の共振特性を表す1種以上の共振器出力信号を測定すること、および
前記検知共振器の作動周波数を調節して、前記TFBARの共振点を維持することを含む、請求項1〜8のいずれか一項に記載の方法。 - 前記TFBARの共振点は最大群遅延の点である、請求項11に記載の方法。
- 前記周波数は1.8GHz以上、2GHz以上、900MHzから10GHz、又は2GHzから2.5GHzである、請求項9〜12のいずれか一項に記載の方法。
- 少なくとも1種の中間電子移動剤は酵素である、請求項1〜13のいずれか一項に記載の方法。
- 試料中の解析物を検出する系であって、
解析物または可溶性沈殿前駆体を選択的に結合する第一の電子移動剤が固定された表面を含む、共振周波数が900MHz以上の圧電薄膜共振器(TFBAR)、
前記沈殿前駆体、および必要に応じて1種以上の酸化還元補因子を収納する1つ以上の容器、
前記1つ以上の容器から、前記第一の電子移動剤が結合しているTFBARの表面への流路、
前記解析物を前記沈殿前駆体に導入するための流路、
前記TFBARを駆動して振動させる作動回路、
前記TFBARに連結されるように配置され、前記検知共振器の振動の共振特性を表す1種以上の共振器出力信号を測定するように構成された測定回路、および
作動的に前記作動回路および前記測定回路と連結された制御部、
を含む、系。 - 試料中の酸化還元酵素の活性または存在を検出する系であって、
解析物または可溶性沈殿前駆体を選択的に結合する第一の電子移動剤が固定された表面を含む、共鳴周波数が900MHz以上の圧電薄膜共振器(TFBAR)、
前記酸化還元酵素に対する基質、前記沈殿前駆体、任意または必要に応じて、1種以上の酸化還元補因子を収納する1つ以上の容器、
前記1つ以上の容器から、前記第一の電子移動剤が結合しているTFBARの表面への流路、
前記酵素を前記基質、前記沈殿前駆体、および任意あるいは必要に応じて1種以上の酸化還元補因子に導入する流路、
前記TFBARを作動させて振動させる作動回路、
前記TFBARに連結されるように配置され、前記検知共振器の振動の共振特性を表す1種以上の共振器出力信号を測定するように構成された測定回路、および
作動的に前記作動回路および前記測定回路と連結された制御部、
を含む、系。
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US11408855B2 (en) | 2018-07-06 | 2022-08-09 | Qorvo Us, Inc. | Bulk acoustic wave resonator with increased dynamic range |
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