Related Experiment Video
Updated: May 20, 2026
ELIME Enzyme Linked Immuno Magnetic Electrochemical Method for Mycotoxin Detection
Published on: October 23, 2009
Sandwich-like voltametric immunosensing of interleukin-8 based on β-cyclodextrin/carbon nanotubes and methylthionine
Zhihua Zhou1, Jiajia Lin2,3,4, Daoping Yue5
1Department of Urology, Meng Chao Hepatobiliary Hospital of Fujian Medical University, Fuzhou, People's Republic of China.
Insights
A novel voltametric immunosensor detects interleukin-8 (IL-8), crucial for diagnosing acute tubular necrosis and oral tumors. This sensor offers a sensitive and efficient method for early disease detection.
Area of Science:
- Biomedical Engineering
- Nanotechnology
- Analytical Chemistry
Background:
- Interleukin-8 (IL-8) is a key biomarker for early diagnosis of acute tubular necrosis and oral tumors.
- Accurate and sensitive detection of IL-8 is critical for effective disease management.
- Existing detection methods may lack the sensitivity or efficiency required for early diagnosis.
Purpose of the Study:
- To develop a novel sandwich-like voltametric immunosensor (SVS) for the sensitive detection of IL-8.
- To utilize advanced nanomaterials like β-cyclodextrin/carbon nanotube (CD/CNT) and UIO-66-NH2 MOFs for enhanced sensor performance.
- To establish a reliable platform for early IL-8 detection, aiding in the diagnosis of related diseases.
Main Methods:
- Fabrication of a SVS using CD/CNT nanohybrid to immobilize primary antibodies (PAb) against IL-8.
- Immobilization of secondary antibodies (SAb) and methylene blue (Mb) probe onto UIO-66-NH2 MOFs for signal amplification.
- Voltammetric analysis to measure the current peak increase of Mb in response to IL-8 concentration.
Main Results:
- The developed SVS demonstrated a wide linearity range for IL-8 detection from 0.001 to 2.5 ng/mL.
- Achieved a low analytical limit of detection (LOD) of 0.2 pg/mL for IL-8.
- The sensor showed increased Mb current peaks proportional to the IL-8 levels, confirming its effectiveness.
Conclusions:
- The novel SVS strategy provides a highly sensitive and efficient method for IL-8 detection.
- The combination of CD/CNT and UIO-66-NH2 MOFs enhances sensor performance.
- This developed SVS holds significant potential for the early diagnosis of acute tubular necrosis and oral tumors.
Abstract:
The level of interleukin-8 (IL-8) in the body is an effective factor for the early diagnosis of acute tubular necrosis and oral tumor. In this work, a novel sandwich-like voltametric immunosensor (SVS) of IL-8 was constructed by preparing β-cyclodextrin/carbon nanotube (CD/CNT) to immobilize primary antibody (PAb) of IL-8 and UIO-66-NH2 MOFs structure to immobilize second antibody (SAb) and methylene blue (Mb) probe. In this designed SVS, the prepared CD/CNT nanohybrid with large surface area and conductivity can immobilize PAb via simple host-guest recognition, and UIO-66-NH2 provided an ideal platform to accommodate SAb and a large number of Mb molecules as signal-amplifier. In the existence of target IL-8, the current peak of Mb from the SVS assay increases with the increasement of IL-8 level. Through optimizing and adjusting various factors, a wide linearity (0.001-2.5 ng mL-1) and low analytical limit (0.2 pg mL-1) of IL-8 were realized, so it's expected the developed SVS strategy has significant applications for the detection of IL-8.
