Graphene Oxide-Assisted Tapered Microfiber Super-Sensor for Rapid Detection of Mycobacterium tuberculosis Antigens

IF 3.5 2区生物学 Q2 BIOTECHNOLOGY & APPLIED MICROBIOLOGY Biotechnology and Bioengineering Pub Date : 2025-01-26 DOI:10.1002/bit.28929

Ren Liu, Tianhuan Song, Xiaolin Chen, Zhiheng Yu, Cunliang Yang, Xianchao Zhang, Fengli Huang, Hao Jia, Jijun Feng, Yujiong Wang

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Abstract

Tuberculosis (TB), caused by Mycobacterium tuberculosis (MTB), is one of the most widespread infectious diseases, with nearly 2 billion people infected globally. We present an innovative approach for the real-time detection of TB antigens Mpt64 and Ag85B using DNA aptamers in combination with a graphene oxide (GO)-assisted optical microfiber super-sensor. The high surface-to-volume ratio and superior properties of the GO layer significantly enhance the microfiber's fixation capabilities. To validate the clinical applicability of this sensing method, we employed the optical sensor to successfully detect Mpt64 and Ag85B in serum samples within 10 s, achieving limits of detection of 4.23 × 10⁻²⁰ M and 3.11 × 10⁻¹⁹ M, respectively. Due to the high conservation of Mpt64 and Ag85B in human and bovine MTB strains, our detection system can be used to identify MTB in both humans and bovine. These results demonstrate the sensor's high sensitivity for quantifying MTB particles, enabling rapid identification of infected individuals or bovine. Overall, the optical microfiber sensor system offers a promising platform for diagnosing MTB due to its straightforward detection scheme and potential for miniaturization.

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来源期刊

Biotechnology and Bioengineering 工程技术-生物工程与应用微生物

CiteScore

7.90

自引率

5.30%

发文量

280

审稿时长

2.1 months

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