Single-Cell Autofluorescence Lifetime Integration With scRNA-seq
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Solution Overview
Problem
Existing single-cell RNA sequencing (scRNA-seq) technologies struggle to accurately correlate cell status and transcription data without inducing stress in isolated cells, necessitating a method for quick and precise cell isolation and data correlation.
Innovation Solution
A system integrating single-cell autofluorescence data with scRNA-seq using a microfluidic chip, autofluorescence detector, and processor to collect and associate autofluorescence data with cell location, enabling correlation with single-cell assay data.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If traditional bulk tissue sampling is used, then sample collection is simple, but cell-to-cell transcription differences cannot be detected
Solution Approach 1:
The patent segments the bulk tissue sample into individual single cells using microfluidic droplet generation. Each cell is isolated in a separate droplet, enabling individual transcription analysis. This segmentation resolves the contradiction by providing cell-to-cell resolution while using a relatively simple droplet-based microfluidic approach rather than complex manual isolation methods.
Solution Approach 2:
The patent employs microfluidic hydraulic systems to automatically isolate, transport, and analyze single cells. The fluid flow controls cell positioning and droplet formation, replacing manual mechanical manipulation. This hydraulic automation achieves high measurement precision while reducing operational complexity through integrated microfluidic channels.
2Reliability
If manual cell isolation methods are used, then cell handling is flexible, but stress genes are induced and cell state is altered
Solution Approach 1:
The patent replaces manual mechanical cell handling with automated microfluidic systems. Cells flow through microchannels and are isolated in droplets without physical manipulation that could cause stress. This substitution maintains cell state integrity while the automated system handles the complexity of precise cell isolation, improving reliability without requiring complex manual operations.
Solution Approach 2:
The microfluidic system allows cells to passively flow through the device and be automatically isolated based on their physical properties. Cells require no active manipulation and experience minimal perturbation, maintaining their native state. The system performs the isolation work itself through controlled fluid dynamics rather than requiring complex external intervention.
3Measurement precision
If quick cell isolation is implemented, then cell state is preserved, but accurate correlation of cell status with transcription data becomes difficult
Solution Approach 1:
The patent merges cell isolation, autofluorescence measurement, and transcription analysis into a single integrated microfluidic workflow. Cells are isolated in droplets and immediately analyzed without transfer or delay. This merging eliminates time loss between steps while maintaining precise correlation through the inherent linkage of measurements performed on the same cell in sequence.
Solution Approach 2:
The patent implements continuous flow processing where cells move continuously through the microfluidic device, undergoing isolation and measurement in an unbroken sequence. This continuous action eliminates idle time between operations while maintaining data correlation through the continuous tracking of individual cells through the system. The useful action of cell analysis proceeds without interruption.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enables precise and non-invasive isolation and correlation of single-cell autofluorescence data with scRNA-seq, providing detailed insights into cellular processes and functions.
Implementation Method 1
a single cell autofluorescence detector including a photon source and a photon detector, wherein the photon source and the photon detector are positioned adjacent the observation zone, and wherein the single cell autofluorescence detector collects autofluorescence data from single cells within the observation zone
Data Source
AI summary
Disclosed is a system for integrating single cell autofluorescence data with single cell assay data. The system includes a microfluidic chip including a sample inlet for introducing a cell sample, a sample channel including an observation zone, and a single cell autofluorescence spectrometer. The system further includes a removable cell container capable of collecting droplets each containing a single cell exiting the microfluidic chip and further capable of being subjected to a single cell assay. A processor and computer memory receive the autofluorescence data set and associate the autofluorescence data set with single cell assay data.