Smartwatches and Insulin Production Control

Introduction to Smartwatch Functionality

Recent research indicates that smartwatches could play a role in regulating insulin production through the use of light-emitting diodes (LEDs). These devices are already employed to track various health metrics, such as heart rate, heart-rate variability, electrocardiograms, blood pressure, and sleep patterns. The continuous or pulsed emission of green light from the LEDs can penetrate the skin, facilitating the measurement and recording of physical health indicators via photoplethysmography.

Research Insights from Nature Communications

According to a study published in Nature Communications, the green light functionality of smartwatches may have the potential to control gene expression and the production of therapeutic proteins. A team of researchers based in Basel, Switzerland, explored whether LEDs could aid in the treatment of diabetes and its related symptoms.

Glow Control Technology in Action

The study utilized a technology known as Green-Light-Operated Watch (Glow) Control to assess the effects of green light on various mammalian and human cell types. Developing Glow-controlled mammalian cells proved to be a complex task. Dr. Martin Fussenegger, a senior author of the study, commented, “No naturally occurring molecular system in human cells responds to green light, so we had to build something new.”

Findings on Diabetes Treatment

The researchers discovered that engineered human cells controlled by Glow could effectively address experimental type 2 diabetes and related symptoms, such as insulin resistance, fasting blood glucose levels, postprandial hyperglycemia, and obesity in a mouse model. This was accomplished through the controlled generation and release of the human glucagon-like peptide-1 (GLP-1), a gastrointestinal hormone crucial for insulin production, in response to green light.

Functionality of Glow Control

The study confirmed that Glow Control enabled robust, rapid, non-invasive, tunable, and reversible transgene expression when cells were exposed to green light. Dr. Fussenegger noted, “It’s the first time that an implant of this kind has been operated using commercially available, smart electronic devices – known as wearables because they are worn directly on the skin.”

The Mechanism Behind the Green Light-Regulated Gene Network

The researchers developed a molecular switch activated by the green light emitted from smartwatches. This switch is interconnected with a gene network that can be turned on or off. By using programmed green-light illumination, researchers can activate the cascade to produce insulin or other substances as needed. During the study, the green light was triggered by starting a running app. When the light was switched off, the process was halted. Dr. Fussenegger explained the advantage of using standard smartwatch software, stating, “Off-the-shelf watches offer a universal solution to flip the molecular switch.”

Future Prospects for Clinical Use

Despite the promising results, it is unlikely that this innovative technology will be available for clinical application within the next decade. The system must undergo several clinical phases before it can be approved for diabetes treatment. Dr. Fussenegger remarked, “To date, only very few cell therapies have been approved.”

References

Mansouri, M., et al. (2021). Smart-watch-programmed green-light-operated percutaneous control of therapeutic transgenes. Nature Communications, 12(3388), 1-10. Retrieved from: https://www.nature.com/articles/s41467-021-23572-4

Controlling insulin production with a smartwatch (2021). EurekAlert! Retrieved from: https://www.eurekalert.org/pub_releases/2021-06/ez-cip060421.php

Image by Pete Linforth from Pixabay