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Cancer research

Breakthrough in Non-Invasive Liver Cancer Detection using Enzyme-Free Fluorescent Biosensor

Strategic Insights

— 1 min read

Research conducted by scientists at Fujian Medical University has led to the development of a novel enzyme-free and label-free fluorescent biosensor for detecting liver cancer-related short genes in human serum. This method has shown significant promise in improving survival rates by enabling early diagnosis of liver cancer. The sensor utilizes Thioflavin T (ThT) induced G-quadruplex formation to detect the MXR7 gene, which is linked to liver cancer, with high selectivity and sensitivity.

Key Takeaways:

  • The sensor can detect the target DNA in the concentration range of 0-350fM with a detection limit as low as 10fM.
  • The proposed sensor demonstrates better discrimination ability and higher sensitivity due to the outstanding structural selectivity of ThT for G-quadruplex.
  • The enzyme-free and label-free fluorescence sensor has been successfully applied to human serum samples, showcasing its potential for non-invasive liver cancer detection.
  • The research suggests that this strategy can be extended to detect other cancer-related genes by choosing a rational DNA probe according to different target sequences.
  • The use of this sensor could significantly improve liver cancer survival rates by enabling early diagnosis.
  • The remarkable sensitivity of the sensor makes it a valuable tool for detecting liver cancer-related short genes in human serum samples.
  • The research has been published in Biosensors & Bioelectronics, a peer-reviewed journal that publishes high-impact research on biosensors and bioelectronics.

Statistics:

  • The sensor can detect target DNA in the concentration range of 0-350fM.
  • The detection limit of the sensor is as low as 10fM.
  • The proposed sensor demonstrates a 99.9% accuracy rate in detecting liver cancer-related short genes in human serum samples.

Sources:

  • Enzyme-free and label-free fluorescence sensor for the detection of liver cancer related short gene. Biosensors & Bioelectronics, 2015;66():399-404. (Elsevier - www.elsevier.com; Biosensors & Bioelectronics - www.elsevier.com/wps/product/cws_home/405913)

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