Yeast-Based Biosensor Peptide Detection
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Solution Overview
Problem
Current point-of-care (POC) diagnostics for peptides are limited, as existing technologies, such as sandwich immunoassays, cannot simultaneously bind a peptide with two antibodies, leading to long wait times and higher costs, making them unsuitable for immediate and cost-effective peptide detection in biological samples.
Innovation Solution
Development of yeast-based biosensors (YBBs) that utilize engineered recognition elements, like modified yeast receptors, to detect and quantify peptide analytes, featuring a surface-exposed receptor for binding and a reporter that signals peptide binding, enabling rapid and cost-effective detection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If sandwich immunoassays are used for peptide detection, then antibody binding capability is improved, but device complexity and cost increase while measurement time extends to hours or days
Solution Approach 1:
The patent changes the fundamental detection parameters by replacing antibody-based recognition with engineered GPCR-based recognition elements in yeast cells. This parameter change enables peptide detection to occur within minutes rather than hours or days, while maintaining detection reliability through the engineered receptor-reporter system
Solution Approach 2:
The patent substitutes the mechanical/chemical process of sandwich immunoassays with a biological sensing system using yeast-based biosensors. The engineered GPCRs in yeast cells detect peptides through natural ligand-receptor binding mechanisms, eliminating the need for complex antibody sandwich structures and extensive washing steps
2Reliability
If sandwich immunoassays are used for peptide detection, then detection capability is improved, but cost increases making them unsuitable for point-of-care use
Solution Approach 1:
The patent employs disposable yeast-based biosensors that are inexpensive to produce and use. The yeast cells serve as single-use detection units that can be discarded after one measurement, eliminating the need for expensive reusable equipment and complex reagent systems required by traditional immunoassays
Solution Approach 2:
The engineered yeast biosensors perform self-detection through their intrinsic GPCR signaling pathways. When the engineered GPCR binds the target peptide, it automatically triggers intracellular signaling that activates reporter gene expression, eliminating the need for external detection equipment or complex assay procedures
3Measurement precision
If modified yeast receptors are engineered for peptide recognition, then sensitivity and specificity are improved, but device complexity increases
Solution Approach 1:
The patent creates a universal yeast-based platform that can detect multiple different peptides by simply changing the engineered GPCR variant expressed in the yeast. The same yeast cellular machinery and reporter system handle all detection tasks, reducing overall system complexity despite the ability to detect multiple analytes with high precision
4Reliability
If frequent measurements are performed for disease monitoring, then treatment effectiveness is improved, but cost increases making frequent measurements impractical
Solution Approach 1:
The patent enables continuous monitoring capability through rapid, repeatable measurements using yeast biosensors. The low cost and quick measurement time allow treatment monitoring to be performed continuously or frequently without accumulating prohibitive costs, maintaining continuous useful action for disease management
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
YBBs provide a low-cost, rapid, and sensitive method for detecting and quantifying peptides in biological samples, overcoming the limitations of existing POC diagnostics by enabling immediate results and frequent measurements.
Implementation Method 1
a recognition element (e.g., receptor (e.g., modified yeast receptor, etc.), etc.) on the exterior of the biosensor (e.g., for binding and or recognition of the analyte (e.g., peptide))
Implementation Method 2
a recognition element binds a desired analyte (e.g., specifically), and sends a signal downstream (e.g., via G-protein or another signal transduction mechanism) to the reporter upon analyte binding
Implementation Method 3
a reporter that signals binding or recognition of the analyte
Data Source
AI summary
Provided herein are compositions and systems comprising yeast-based biosensors (YBBs) and methods of use thereof. In particular, YBBs are provided for the detection and/or quantification of an analyte (e.g., peptide analyte) in a sample (e.g., a biological sample, environmental sample, etc.). In some embodiments, provided herein are diagnostic compositions, devices, and methods comprising yeast-based biosensors (YBBs) engineered to detect analytes (e.g., peptides (e.g., biomarker peptides, etc.), etc.). In some embodiments, YBBs comprise (a) recognition element (e.g., receptor (e.g., modified yeast receptor, etc.), etc.) on the exterior of the biosensor (e.g., for binding and or recognition of the analyte (e.g., peptide)), and (b) a reporter that signals binding or recognition of the analyte. In some embodiments, a recognition element is a cell surface receptor.