Zscan4 Expression for Telomere Lengthening Without Telomerase Risk

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Solution Overview

Problem

Current methods for increasing telomere length and correcting genomic and/or chromosome abnormalities in human cells are inadequate, particularly due to the risks associated with telomerase expression and the uncertainty of Zscan4 function in human cells.

Innovation Solution

Increasing expression of Zscan4 in human cells using agents such as nucleic acid molecules encoding Zscan4 to induce telomere lengthening, genome stability, and correction of chromosome abnormalities.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Length of stationary object

If telomerase expression is used to increase telomere length, then telomere length is improved, but cancer risk increases due to genomic instability

Engineering Contradiction:

Improvetelomere lengthVSAvoidcancer risk

Core Design Contradiction:

Length of stationary objectVSObject-affected harmful factors

Solution Approach 1:

Instead of using telomerase to lengthen telomeres (the conventional approach), the patent employs Zscan4, a different protein mechanism that achieves telomere lengthening through an alternative pathway. This inversion of the approach avoids the cancer-associated genomic instability caused by telomerase while still achieving the desired telomere extension and cellular rejuvenation

Inventive Principle:

Principle #13The other way round (Inversion)

2Reliability

If Zscan4 function in human cells is uncertain, then safety is improved by avoiding use, but potential therapeutic benefits are lost

Engineering Contradiction:

ImprovesafetyVSAvoidtherapeutic potential

Core Design Contradiction:

ReliabilityVSAdaptability or versatility

Solution Approach 1:

The patent performs preliminary validation by demonstrating that Zscan4 functions in human cells through in vitro experiments showing telomere lengthening and genomic stability correction. This preliminary action establishes safety and efficacy data before clinical application, enabling the transition from uncertain potential to validated therapeutic approach

Inventive Principle:

Principle #10Preliminary action

3Length of stationary object

If current methods for increasing telomere length are used, then telomere length is improved, but genomic stability is worsened due to insufficient correction of chromosome abnormalities

Engineering Contradiction:

Improvetelomere lengthVSAvoidgenomic stability

Core Design Contradiction:

Length of stationary objectVSStability of the object's composition

Solution Approach 1:

Zscan4 serves multiple functions simultaneously: it lengthens telomeres, corrects chromosome abnormalities, and stabilizes the genome. This multi-functionality ensures that telomere extension is accompanied by comprehensive genomic stabilization, addressing both telomere length and genomic stability requirements in a single therapeutic mechanism

Inventive Principle:

Principle #6Universality (Multi-functionality)

Data Source

PatentUS12478657B2Methods of using Zscan4 for rejuvenating human cells

Publication Date: 2025.11.25 ELIXIRGEN THERAPEUTICS INC

AI summary

The present disclosure relates to methods for increasing telomere length in one or more human cells and/or increasing genome stability of one or more human cells, for example by contacting one or more human cells with an agent that increases expression of Zscan4 in the one or more human cells. Methods of treating a subject in need of telomere lengthening, treating a disease or condition associated with a genomic and/or chromosome abnormality, of rejuvenating one or more human cells, of rejuvenating tissues or organs, and of rejuvenating a subject in need thereof, for example by contacting one or more human cells in the subject with an agent that increases expression of Zscan4, or by administering to a subject in need thereof, an agent that increases expression of Zscan4 are also provided.