Reporter Molecules for In Vivo Cell Tracking
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current cell transplantation therapies face challenges in tracking the fate and differentiation of transplanted cells in vivo, including uncertainty about cell delivery, retention, viability, and the risk of aberrant differentiation and tumorigenesis.
Innovation Solution
Engineering cells to express reporter molecules, such as cell surface binding molecules, which are detectable using radiolabeled binding partners, allowing for the anatomical positioning and identification of cells through imaging.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If cells are transplanted for therapy, then treatment effectiveness is improved, but ability to track cell fate and differentiation is insufficient
Solution Approach 1:
The patent introduces reporter molecules as intermediary elements that are genetically incorporated into transplanted cells. These reporters (such as fluorescent proteins, luciferase, or cell surface markers) serve as mediators between the transplanted cells and detection systems, enabling non-invasive tracking of cell location, viability, and differentiation status without interfering with the cells' therapeutic function
Solution Approach 2:
The patent utilizes optical property changes, specifically fluorescence emission, to enable cell tracking. Reporter molecules like GFP (green fluorescent protein) or RFP (red fluorescent protein) emit characteristic colors when excited by specific wavelengths of light, allowing differentiation of transplanted cells from host cells and tracking of their spatial distribution and temporal behavior through imaging systems
2Productivity
If conventional cell transplantation is performed, then cell delivery is achieved, but monitoring of cell retention and viability is difficult
Solution Approach 1:
The patent implements feedback mechanisms through longitudinal imaging of reporter-expressing cells. By repeatedly imaging the same subject over time, the system provides feedback information about cell retention, migration, and viability, allowing researchers to assess whether transplanted cells are surviving and functioning as intended without requiring invasive biopsy procedures
Solution Approach 2:
The patent replaces invasive mechanical biopsy procedures with non-invasive optical imaging systems. Instead of physically extracting tissue samples to assess cell status, the system uses external imaging devices (such as MRI, PET, or fluorescence imaging systems) to detect reporter signals from within the subject's body, eliminating the need for repeated surgical interventions
3Loss of information
If transplanted cells are monitored invasively, then cell behavior data is obtained, but patient risk and procedure complexity increase
Solution Approach 1:
The patent enables transplanted cells to serve their own tracking function through autonomous expression of reporter molecules. The cells continuously produce the reporter protein as part of their genetic makeup, allowing them to be detected at any time without external intervention or additional procedures, thereby eliminating the need for invasive monitoring while maintaining continuous observation capability
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 non-invasive tracking of transplanted cells and their progeny, improving clinical outcomes by providing critical insights into cell distribution and behavior post-implantation.
Implementation Method 1
one or more radiolabeled binding molecules that bind specifically to the cell surface binding molecule encoded by the one or more recombinant genetic constructs
Data Source
AI summary
The present disclosure is directed to systems for in vivo tracking of target cells resulting from implantation of a preparation of cells. The present disclosure is further directed to in vivo methods of tracking a preparation of cells implanted in a subject, and of preparations of cells.