Microfluidic Porous Silicon Aptasensor Array for Multiplex Detection of Sepsis Biomarkers Using Reflectometric Interference Fourier Transform Spectroscopy (RIFTS)
کلمات کلیدی:
Multiplex- Microfluidic, RIFTS- Silicon, Aptasensor, Biomarker- Reflectometricچکیده
Multiplexing in point-of-care biosensors has revolutionized diagnostics across various fields, including medicine, environmental monitoring, and the food safety, by enabling rapid and simultaneous analysis of multiple analytes. In clinical settings, this technology is particularly crucial for multifactorial, multistage, and potentially fatal conditions like sepsis, a major cause of mortality in intensive care units. Consequently, the development of rapid, accurate, and multiplexed detection methods for sepsis-related biomarkers is crucial for timely diagnosis and informed treatment decisions. Herein, we present a novel label-free aptasensor platform based on porous silicon employs Reflective Interferometric Fourier Transform Spectroscopy (RIFTS), utilizing a 3-channel microfluidic system to multiplex detection of three sepsis biomarkers: C-reactive protein (CRP), tumor necrosis factor-alpha (TNF-α), and interleukin-6 (IL-6). The selectivity of the developed sensing platform was cross-validated versus commonly known interfering non-target proteins without compromising its performance values and in the clinical range of severe sepsis. This innovative approach offers potential for rapid, sensitive, and specific multiplex detection of biomarkers potentially improving patient outcomes through comprehensive and more accurate diagnosis.
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