Electrochemical genosensor assay using lyophilized gold nanoparticles/latex microsphere label for detection of Vibrio cholerae

บทความในวารสาร


ผู้เขียน/บรรณาธิการ


กลุ่มสาขาการวิจัยเชิงกลยุทธ์

ไม่พบข้อมูลที่เกี่ยวข้อง


รายละเอียดสำหรับงานพิมพ์

รายชื่อผู้แต่งLiew P.S., Lertanantawong B., Lee S.Y., Manickam R., Lee Y.H., Surareungchai W.

ผู้เผยแพร่Elsevier

ปีที่เผยแพร่ (ค.ศ.)2015

วารสารTalanta: The International Journal of Pure and Applied Analytical Chemistry (0039-9140)

Volume number139

หน้าแรก167

หน้าสุดท้าย173

จำนวนหน้า7

นอก0039-9140

eISSN1873-3573

URLhttps://www.scopus.com/inward/record.uri?eid=2-s2.0-84925181976&doi=10.1016%2fj.talanta.2015.02.054&partnerID=40&md5=987c0981b3acb662623b405c79b50e74

ภาษาEnglish-Great Britain (EN-GB)


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บทคัดย่อ

Vibrio cholerae is a Gram-negative bacterium that causes cholera, a diarrheal disease. Cholera is widespread in poor, under-developed or disaster-hit countries that have poor water sanitation. Hence, a rapid detection method for V. cholerae in the field under these resource-limited settings is required. In this paper, we describe the development of an electrochemical genosensor assay using lyophilized gold nanoparticles/latex microsphere (AuNPs-PSA) reporter label. The reporter label mixture was prepared by lyophilization of AuNPs-PSA-avidin conjugate with different types of stabilizers. The best stabilizer was 5% sorbitol, which was able to preserve the dried conjugate for up to 30 days. Three methods of DNA hybridization were compared and the one-step sandwich hybridization method was chosen as it was fastest and highly specific. The performance of the assay using the lyophilized reagents was comparable to the wet form for detection of 1 aM to 1 fM of linear target DNA. The assay was highly specific for V. cholerae, with a detection limit of 1 fM of PCR products. The ability of the sensor is to detect LAMP products as low as 50 ng μl-1. The novel lyophilized AuNPs-PSA-avidin reporter label with electrochemical genosensor detection could facilitate the rapid on-site detection of V. cholerae. © 2015 Elsevier B.V. All rights reserved.


คำสำคัญ

CholeraLAMPLayer-by-layermodified latexLyophilizationPCR products


อัพเดทล่าสุด 2023-27-09 ถึง 07:35