Microfluidic assay-based optical measurement techniques for cell analysis: A review of recent progress

Area of Science:

• Biomedical Engineering
• Analytical Chemistry
• Cell Biology

Background:

• Microfluidic cell culture systems have emerged as a significant alternative to traditional methods since the early 2000s.
• Efficient real-time detection systems are crucial for analyzing cell behavior within microfluidic devices.
• Advancements in microfluidic assays aim to replicate in vivo conditions and enable high-throughput screening.

Purpose of the Study:

• To review and discuss various optical measurement techniques applicable to microfluidic assays.
• To highlight recent developments in fluorescence- and absorbance-based optical detection systems.
• To explore advanced optical detection systems focusing on long-term, real-time, in situ measurements, performance enhancement, and multimodal analysis.

Main Methods:

• Review of existing literature on optical measurement techniques for microfluidic assays.
• Description of fluorescence- and absorbance-based optical systems.
• Discussion of advanced detection strategies including real-time monitoring, performance optimization, and multimodal capabilities.

Main Results:

• Recent developments in fluorescence- and absorbance-based optical measurement systems are presented.
• Advanced optical detection systems are categorized by their optimization for long-term, real-time, and in situ measurements.
• Emphasis is placed on performance improvements and the integration of multimodal analysis capabilities.

Conclusions:

• Optical measurement techniques are vital for the advancement of microfluidic cell culture assays.
• Future prospects involve the development of sophisticated optical detection systems for complex, multi-dimensional microfluidic assays.
• These advancements will further enhance the ability of microfluidic systems to mimic in vivo tissue, organ, and human systems.