Peptide APC Activators for Stress Resistance and Cancer Treatment
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Solution Overview
Problem
Current technologies lack effective methods to modulate Anaphase Promoting Complex (APC) activity for increasing stress resistance and lifespan in cells, particularly in plants and mammals, and for treating cancer.
Innovation Solution
Development of specific peptides that bind to APC subunits, such as Mad2 inhibitors and other peptide activators, which increase APC activity by reducing substrate levels, thereby enhancing stress resistance and longevity, and sensitizing cancer cells to chemotherapy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If APC activity is increased through peptide activators, then stress resistance and lifespan are improved, but device complexity increases due to the need for specific peptide design and administration
Solution Approach 1:
The patent uses peptide activators as intermediary molecules that bind to APC subunits (such as Mad2) to modulate APC activity. These peptides serve as mediators between the desired therapeutic effect (increased stress resistance and lifespan) and the target complex (APC), enabling controlled activation without directly modifying the APC structure itself.
Solution Approach 2:
The invention employs peptides with specific amino acid sequences (e.g., XSSHXDAXXXRXT pattern) that change the functional parameters of APC by binding to its subunits. The peptides alter APC activity levels through their sequence composition and binding affinity, thereby modulating substrate degradation rates and achieving the desired biological effects.
2Reliability
If APC substrate levels are reduced to increase APC activity, then cancer treatment efficacy is improved, but loss of substance increases due to accelerated protein degradation
Solution Approach 1:
The patent extracts and targets specific APC substrates (such as Mad2 and other cell cycle regulators) for selective degradation. By designing peptides that specifically bind to APC subunits, the system enables selective removal of cancer-promoting proteins while preserving other cellular components, thereby achieving cancer treatment efficacy with controlled substance loss.
Solution Approach 2:
The invention converts the potentially harmful accumulation of cancer-promoting proteins into a beneficial therapeutic effect by accelerating their degradation. The peptides activators transform the normal APC degradation pathway into a therapeutic tool that eliminates cancer-associated substrates, turning the ubiquitin-proteasome system into an anti-cancer mechanism.
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 peptides significantly increase stress resistance and longevity in cells and sensitize cancer cells to chemotherapy, effectively addressing the limitations of existing methods in modulating APC activity and treating cancer.
Implementation Method 1
peptides that bind anaphase promoting complex (APC) subunits and/or activate APC
Data Source
AI summary
Novel activators of the APC complex and methods and uses of these activators are provided. In particular, the activators are used for increasing resistance to stress and/or increasing lifespan in a plant or mammalian cell, in a plant or mammalian embryo or in a plant or subject. The activators are also used for treating cancer in a subject.