Immune Cell Tracking via Biocompatible Magnetic Nanoparticles

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Solution Overview

Problem

Current methods for immune cell tracking, such as invasive biopsy procedures and pre-labeling with magnetic nanoparticles, are prone to errors, expensive, and fail to detect early signs of immune rejection in organ transplantation.

Innovation Solution

A non-invasive method using biocompatible magnetic nanoparticles with a superparamagnetic core covered by biocompatible polymers, administered intravenously for MRI imaging to detect immune cell accumulation and rejection in organs.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If invasive biopsy procedures are used to monitor immune cells, then immune response can be detected, but the procedure causes adverse side effects and sampling errors

Engineering Contradiction:

Improvedetection accuracyVSAvoidadverse side effects

Core Design Contradiction:

ReliabilityVSObject-affected harmful factors

Solution Approach 1:

The patent replaces the mechanical invasive biopsy procedure with a non-invasive magnetic resonance imaging (MRI) based detection system. Magnetic nanoparticles are administered to patients and tracked using MRI to monitor immune cell migration and accumulation, eliminating the need for physical tissue sampling while maintaining detection capability.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The patent introduces magnetic nanoparticles as an intermediary substance that can be administered systemically and tracked externally using MRI. These nanoparticles serve as mediators between the immune cells of interest and the detection system, allowing indirect observation without direct tissue intervention.

Inventive Principle:

Principle #24Intermediary (Mediator)

2Measurement precision

If pre-labeling immune cells ex vivo with magnetic nanoparticles is performed, then immune cell tracking is achieved, but the process requires tedious pre-labeling steps

Engineering Contradiction:

Improvetracking sensitivityVSAvoidoperative steps

Core Design Contradiction:

Measurement precisionVSDevice complexity

Solution Approach 1:

The patent performs preliminary action by pre-coating magnetic nanoparticles with targeting ligands (such as antibodies or peptides) during manufacturing, so that when these nanoparticles are administered in vivo, they automatically home to and bind with specific immune cells. This eliminates the need for complex ex vivo cell isolation and labeling procedures.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The patent replaces the complex mechanical ex vivo cell manipulation process with a simplified in vivo tracking approach using pre-functionalized magnetic nanoparticles that can be administered systemically and will automatically target the desired immune cells through biological recognition mechanisms.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

3Reliability

If periodic biopsy analysis is used to monitor immune cells, then immune rejection can be detected, but early acute or chronic rejection is often missed

Engineering Contradiction:

Improvedetection sensitivityVSAvoiddetection delay

Core Design Contradiction:

ReliabilityVSLoss of time

Solution Approach 1:

The patent enables continuous monitoring of immune cells through repeated non-invasive MRI scans, allowing dynamic tracking of immune cell migration and accumulation over time. This continuous observation capability detects early signs of rejection that would be missed by periodic biopsies, as the MRI can capture transient or early-stage immune infiltrates before they become apparent in biopsy samples.

Inventive Principle:

Principle #20Continuity of useful action

4Reliability

If invasive biopsy procedures are performed regularly, then immune response monitoring is achieved, but the procedure is expensive

Engineering Contradiction:

Improvemonitoring effectivenessVSAvoidprocedure cost

Core Design Contradiction:

ReliabilityVSQuantity of substance

Solution Approach 1:

The patent replaces expensive invasive biopsy procedures with a non-invasive MRI-based monitoring system. While MRI equipment is costly, the elimination of repeated surgical interventions, pathology processing, and associated hospitalization reduces overall procedural costs. The magnetic nanoparticles themselves are administered in small doses and can be tracked over multiple time points without requiring additional invasive procedures.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

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

This method provides high sensitivity for detecting immune responses, including early signs of rejection, with fewer operative steps and regulatory hurdles, and is less invasive compared to existing techniques.

Implementation Method 1

The biocompatible magnetic nanoparticles each contain a superparamagnetic core

Methodology Applied

Scientific EffectSuperparamagnetism: Superparamagnetism

Implementation Method 2

obtain a magnetic resonance image of the organ

Methodology Applied

Scientific EffectMagnetic resonance imaging: Magnetic Field

Data Source

PatentUS20240000978A1Method for immune cell tracking

Publication Date: 2024.01.04 MEGAPRO BIOMEDICAL

AI summary

A method of tracking immune cells to detect immune response. The method including steps of identifying a patient having a disease associated with an organ; administering biocompatible magnetic nanoparticles into the blood stream of the patient; and obtaining a magnetic resonance image of the organ. The presence of hyperintense or hypointense spots in the magnetic resonance image indicates immune response in the patient.