This breakthrough technology assembles DNA-binding domains, activation peptides, and cell-penetrating peptides onto a gold nanoparticle scaffold, creating a nanosystem that achieves precise and transient activation of Oct4 target genes within the cell nucleus. Unlike traditional OSKM-based reprogramming approaches that carry risks of tumorigenicity and cell identity loss, Oct4-nanoscript enables partial reprogramming, restoring youthful epigenetic markers without activating oncogenic factors such as c-Myc.
The Oct4-nanoscript cleverly uses tiny gold nanoparticles as carriers that deliver essential components directly into cells, activating specific genes related to cell renewal without causing unwanted side effects, such as tumor formation, often associated with other rejuvenation methods. Remarkably, the results showed these nanoparticles could partially reprogram cells, reversing the hallmarks of aging. In lab tests on progeria mouse fibroblast cells, the Oct4-nanoscript successfully reduced DNA damage, restored healthy cellular markers, and suppressed markers associated with aging.
More impressively, when administered to progeria mice, Oct4-nanoscript rejuvenated multiple organs—including the liver, kidneys, and cardiovascular system—significantly improving the animals' overall health and extending their lifespan. Treated mice also maintained healthier body weights and exhibited improved physical performance without any signs of tumor development or behavioral abnormalities.
In short, this research not only offers hope for effectively treating progeria but also opens exciting possibilities for addressing a broader range of age-related diseases. Using biomimetic nanoparticles represents a powerful new frontier in regenerative medicine, promising safe and precise therapeutic options that could one day help millions lead longer, healthier lives.
PUBLICATION: H. Kim, J. Kim, E. Lee, B. Conklin, Y. Hou, S. Kim, Y. Hwang, K.-B. Lee, J. Kim, Alleviation of Aging-Related Hallmarks in a Mouse Model of Progeria via a Nanoparticle-Based Artificial Transcription Factor. Adv. Funct. Mater. 2025, 2425944.
DOI: https://doi.org/10.1002/adfm.202425944.
AUTHORS: Hongwon Kim, Euiyeon Lee, Brandon Conklin, Yannan Hou, and Ki-Bum Lee
CORRESPONDENCE: Prof. Ki-Bum Lee (Rutgers University), https://kblee.rutgers.edu/
Prof. KiBum Lee
Hongwon Kim
Euiyeon Lee
Brandon Conklin
Yannan Hou