Label-Free Direct Detection of Cylindrospermopsin via Graphene-Enhanced Surface Plasmon Resonance Aptasensor

Stefan Jaric, Aabha Bajaj, Vladimir Vukic, Ivana Gadjanski, Ibrahim Abdulhalim, Ivan Bobrinetskiy

نتاج البحث: نشر في مجلةمقالةمراجعة النظراء

ملخص

In this work, we report a novel method for the label-free detection of cyanotoxin molecules based on a direct assay utilizing a graphene-modified surface plasmon resonance (SPR) aptasensor. Molecular dynamic simulation of the aptamer’s interaction with cylindrospermopsin (CYN) reveals the strongest binding sites between C18–C26 pairs. To modify the SPR sensor, the wet transfer method of CVD monolayer graphene was used. For the first time, we report the use of graphene functionalized by an aptamer as a bioreceptor in conjunction with SPR for the detection of CYN. In a direct assay with an anti-CYN aptamer, we demonstrated a noticeable change in the optical signal in response to the concentrations far below the maximum tolerable level of 1 µg/L and high specificity.

اللغة الأصليةإنجليزيّة أمريكيّة
رقم المقال326
دوريةToxins
مستوى الصوت15
رقم الإصدار5
المعرِّفات الرقمية للأشياء
حالة النشرنُشِر - 1 مايو 2023

All Science Journal Classification (ASJC) codes

  • !!Health, Toxicology and Mutagenesis
  • !!Toxicology

بصمة

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