Electronic Cortisol Detection Using an Antibody-Embedded Polymer Coupled to a Field-Effect Transistor.

Electronic Cortisol Detection Using an Antibody-Embedded Polymer Coupled to a Field-Effect Transistor.
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使用与野外晶体管耦合的抗体的聚合物检测电子皮质醇。

DOI:
10.1021/acsami.7b18855
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发表时间:
2018-05-16
影响因子:
9.5
通讯作者:
Katz HE
Katz HE
中科院分区:
材料科学2区
文献类型:
--
作者:
Jang HJ;Lee T;Song J;Russell L;Li H;Dailey J;Searson PC;Katz HE

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在生理条件下证明了一种基于场效应晶体管的皮质醇传感器。为了克服德拜长度(λD)的问题,提出了在远端栅极上嵌入抗体的聚合物。将聚苯乙烯-甲基丙烯酸(PSMA)与抗皮质醇连接制成传感膜,并将改性后的聚合物涂覆在远程栅极上。该聚合物中嵌入的受体对皮质醇的灵敏度为10 fg/mL ~ 10 ng/mL,在λD为0.2 nm的1× PBS中检测限为1 pg/mL。轻度缓冲人工汗液的LOD为1 ng/mL。最后,夹心酶联免疫吸附试验证实了抗体包埋的PSMA的抗体结合活性。
A field-effect transistor-based cortisol sensor was demonstrated in physiological conditions. An antibody-embedded polymer on the remote gate was proposed to overcome the Debye length issue (λD). The sensing membrane was made by linking poly(styrene-co-methacrylic acid) (PSMA) with anticortisol before coating the modified polymer on the remote gate. The embedded receptor in the polymer showed sensitivity from 10 fg/mL to 10 ng/mL for cortisol and a limit of detection (LOD) of 1 pg/mL in 1× PBS where λD is 0.2 nm. A LOD of 1 ng/mL was shown in lightly buffered artificial sweat. Finally, a sandwich ELISA confirmed the antibody binding activity of antibody-embedded PSMA.
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影响因子: 8.4
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