biochip tagged posts

Researchers develop Affordable, Rapid Blood Test for Brain Cancer

Researchers develop affordable, rapid blood test for brain cancer
The biochip is used to detect biomarkers for glioblastoma, a fast-growing brain cancer. Credit: Matt Cashore / University of Notre Dame

Researchers at the University of Notre Dame have developed a novel, automated device capable of diagnosing glioblastoma, a fast-growing and incurable brain cancer, in less than an hour. The average glioblastoma patient survives 12–18 months after diagnosis.

The crux of the diagnostic is a biochip that uses electrokinetic technology to detect biomarkers, or active Epidermal Growth Factor Receptors (EGFRs), which are overexpressed in certain cancers such as glioblastoma and found in extracellular vesicles.

“Extracellular vesicles or exosomes are unique nanoparticles secreted by cells...

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Minute Levels of Disease detected with Nanotechnology-enhanced Biochip


a Schematic representation at various stages of biosensor fabrication: (i) Bare electrodes (ii) SAM layer on the bare electrodes (iii) immobilized gold nano particles on the SAM layer (iv) Antibody immobilization on the electrodes (v) antigen–antibody conjugation on the electrodes. b Real image of the biosensor with microchannel

The difficulty in spotting minute amounts of disease circulating in the bloodstream has proven a stumbling block in the detection and treatment of cancers that advance stealthily with few symptoms. With a novel electrochemical biosensing device that identifies the tiniest signals these biomarkers emit, a pair of NJIT inventors are hoping to bridge this gap.

Their work in disease detection is an illustration of the power of electrical sensing – and the gr...

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