StopTime Inc. | Pausing Life to Preserve It | Cellular Dormancy Technology

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StopTime

Pausing Life to Preserve It

Controlling Cellular Metabolism for Preservation, Biobanking, and Extended Longevity

About StopTime

StopTime Inc. is developing a first-in-class platform to safely and reversibly slow biological time in living systems, from human cells to plants and animals.

Our technology places cells into a protected, low-energy state without causing stress, damage, or permanent changes, and restores them back to full function on demand.

StopTime’s cellular dormancy technology protects cells in a dormant, stress-resistant state, enabling long-term preservation.

StopTime’s approach protects cells in a dormant, stress-resistant state, enabling long-term preservation.

Key Features

Generalizable – Induces dormancy across human, animal, and plant systems.

Non-disruptive – Uses conserved, endogenous mechanisms; avoids stress-inducing agents.

Safe – No apoptosis, differentiation, or senescence.

Cryo-ready – Designed to integrate with cryopreservation and improve post-thaw viability.

Patent-protected – With follow-on induction strategies in development.

Scalable – Designed for rapid deployment in both ex vivo and in vivo applications.

Versatile – Suitable for short-term preservation or extended dormancy.

Built on discoveries published in Nature Communications (2025) and expanded through proprietary research, this approach offers a safe, tunable way to preserve life for applications in organ and tissue preservation, biobanking, aging and longevity, space travel, and beyond.

Technology

A tunable platform to pause biology – safely and reversibly.

StopTime’s technology targets the process cells use to make ribosomes, triggering a dormant, low-energy state across a broad range of cell types and tissues. Dormancy is maintained without stress, damage, or unwanted changes, and is fully reversed on demand.

Applications

Organ & tissue preservation

Organ preservation solutions to extend the viability of transplantable materials.

Biobanking and cell therapy

Biobanking technology for long-term cell storage without loss of function; compatible with cryopreservation methods.

Extends the viability of transplantable materials

Enables long-term storage without loss of function

Aging, longevity, and space travel

Cellular dormancy technology for extended longevity and space biology applications.

Opens possibilities for stasis-like states in whole organisms

Agriculture and transport

Preservation of plants and animal embryos for agriculture, food supply security, and preservation of species and biodiversity.

Preserves plants and animal embryos during storage and transport

Research applications for studying dormancy and cellular stress survival.

Discovery research

Unique tool to study dormancy and stress survival

Team

Jernej Murn, PhD

Co-Founder

Associate Professor, University of California, Riverside; originator of StopTime's core technology, with expertise in RNA biology and protein biochemistry.

Sihem Cheloufi, PhD

Co-Founder

Associate Professor, University of California, Riverside; expert in epigenetic regulation, stem cell biology, and cellular plasticity.

Get in touch

We’d love to hear from you! Whether you’re an investor, collaborator, or just curious about StopTime, share your thoughts below.

Prefer email? Contact us at contact@stoptime.bio

Scott Eliasof, PhD

Strategic Advisor

Biotech executive with over 25 years of experience leading R&D and translational programs across industry and academia. Former SVP of Research at Frequency Therapeutics and CSO of Cerulean Pharma, with earlier roles at the Broad Institute and Millennium Pharmaceuticals.