Earlier diagnoses of acute leukemia by a sandwich type of electrochemical aptasensor based on copper sulfide-graphene composite

Due to high affinity and specificity of aptamers, they are widely considered for construction of aptasensor to specific recognizing of analytes in biological complex matrix. So, in this work we design a high selective and sensitive aptasensor for leukemia cancer cells (CCRF-CEM) via superior catalyt...

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Bibliographic Details
Published inAnalytica chimica acta Vol. 1146; pp. 1 - 10
Main Authors Khoshroo, Alireza, Hosseinzadeh, Laleh, Adib, Kourosh, Rahimi-Nasrabadi, Mehdi, Ahmadi, Farhad
Format Journal Article
LanguageEnglish
Published Netherlands Elsevier B.V 15.02.2021
Subjects
Aptamers, Nucleotide
Aptasensor
Biosensing Techniques
Catechol
Copper
Copper sulfide
Electrochemical Techniques
Gold
Graphite
Humans
Leukemia - diagnosis
Leukemia cancer cells
Limit of Detection
Metal Nanoparticles
Screen-printed electrode
Sulfides
Screen-printed electrode
Catechol
Leukemia cancer cells
Aptasensor
Copper sulfide
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Summary:Due to high affinity and specificity of aptamers, they are widely considered for construction of aptasensor to specific recognizing of analytes in biological complex matrix. So, in this work we design a high selective and sensitive aptasensor for leukemia cancer cells (CCRF-CEM) via superior catalytic effect of copper sulfide-graphene (CuS-GR) nanocomposite as label and Au-GR nanocomposite as sensing platform. The CuS-GR nano-composite (label component) is CuS nanoparticles that wrapping on graphene sheets. Its catalytic activity (CuS-GR) increases the current of sensor in parallel with adding of CCRF-CEM and provide sensitive detection of analytes. The detailed of signal amplification and effect on the aptasensor performance completely discussed. This sensor has a linear range of 50–1 × 106 cell mL−1, with a limit of detection of 18 cell mL−1. Also, the developed aptasensor has a significance specificity, high sensitivity and accuracy. It was used for the identification of CCRF-CEM cells in blood samples. [Display omitted] •A sensitive technique presents for the detection of CCRF-CEM.•A superior label for cancer cell sensing was introduced through CuS-GR nanocomposite.•The aptasensor reaches a wide linear range from 50 to 1 × 106 Cell mL−1.
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ISSN:0003-2670
1873-4324
DOI:10.1016/j.aca.2020.12.007