Mammalian PFAS Binding Proteins for Ultra-Low-Level Detection

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Solution Overview

Problem

Current PFAS remediation methods lack rapid and specific detection of ultra-low concentrations of PFAS compounds, and there is a need for improved binding proteins to enhance biosensor performance in detecting PFAS with high sensitivity and specificity.

Innovation Solution

Development of mammalian PFAS binding proteins, such as NME4, FAM110D, TPRG1, KCNAB1, CUTA, AIFM2, POLDIP3, ZADH2, USP21, KDM4D, thyroglobulin, and PPARA, which can bind to PFAS compounds, allowing for their detection using electrochemical, optical, or flow-based assays.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Measurement precision

If conventional adsorption media and incineration facilities are used for PFAS remediation, then PFAS can be removed from water, but rapid detection of ultra-low concentrations cannot be achieved

Engineering Contradiction:

Improvedetection sensitivityVSAvoiddetection time

Core Design Contradiction:

Measurement precisionVSLoss of time

Solution Approach 1:

The patent replaces conventional mechanical/chemical adsorption methods with a biosensor system that uses biological recognition elements (antibodies, aptamers, or protein A) combined with transduction mechanisms (electrochemical, optical, or flow-based) to achieve rapid detection of PFAS at ultra-low concentrations, eliminating the need for time-consuming laboratory testing

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The patent introduces binding proteins or recognition elements as intermediaries that specifically interact with PFAS compounds, enabling the detection system to target and identify PFAS molecules at trace levels through enhanced biological affinity and specificity

Inventive Principle:

Principle #24Intermediary (Mediator)

2Measurement precision

If binding proteins are used to detect PFAS, then detection specificity can be improved, but the ability to detect interfering moieties like octanoic acid increases

Engineering Contradiction:

Improvebinding specificityVSAvoidinterfering moiety detection

Core Design Contradiction:

Measurement precisionVSObject-affected harmful factors

Solution Approach 1:

The patent employs PFAS-specific binding proteins with highly specialized recognition sites that are structurally optimized to interact only with fluorinated carbon chains, creating local chemical specificity that distinguishes PFAS from non-fluorinated interfering compounds like octanoic acid through selective binding affinity

Inventive Principle:

Principle #3Local quality

3Ease of operation

If portable chip-based detection units are developed, then rapid field detection is enabled, but transducer performance and sensitivity must be significantly enhanced

Engineering Contradiction:

Improvefield detection capabilityVSAvoidtransducer sensitivity

Core Design Contradiction:

Ease of operationVSMeasurement precision

Solution Approach 1:

The patent integrates multiple transduction mechanisms (electrochemical, optical, or flow-based sensors) with binding proteins in a composite biosensor system, combining the portability of chip-based technology with enhanced sensitivity through synergistic signal detection methods that can identify single molecules

Inventive Principle:

Principle #40Composite materials

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

The mammalian PFAS binding proteins enable detection of PFAS compounds at single digit parts per trillion levels with high specificity, facilitating rapid on-site analysis and reducing the need for laboratory testing.

Implementation Method 1

The PFAS binding protein may bind to one or more PFAS compounds (that is, may have PFAS compound binding activity)

Methodology Applied

Scientific EffectMolecular recognition:

Data Source

PatentUS20250208121A1Mammalian per- and polyfluorinated-alkyl compound (PFAS) binding proteins and uses thereof

Publication Date: 2025.06.26 ALLONNIA LLC

AI summary

Provided herein are mammalian proteins that bind per- and polyfluoroalkyl compounds (PFAS), detection systems comprising the mammalian proteins, and uses thereof for detecting PFAS.