Aging Research: New ‘Aged’ Cell Discovery
- Scientists in Tokyo have developed a novel, label-free method to identify senescent cells, offering new avenues for research into aging and related diseases.
- The current methods for identifying these cells are complex and can alter the cells themselves.
- Instead of using chemical labels, the team exposed cells to an alternating electric field.
Groundbreaking research unveils a novel technique to identify senescent cells, significantly advancing aging research. Scientists in tokyo have pioneered a label-free method that uses an alternating electric field, offering a simpler, faster way to detect these aged cells. This innovative approach, frequency-modulated dielectrophoresis (FM-DEP), differentiates cells based on their cutoff frequency, providing a clearer understanding of cellular aging. This revelation, focusing on human dermal fibroblasts, could revolutionize research into age-related diseases like AlzheimerS and diabetes. The FM-DEP method, detailed in the IEEE Sensors Journal, holds immense potential for drug screening and regenerative medicine, offering a versatile tool for identifying aging cells. News Directory 3 is proud to highlight this cutting-edge advancement. Discover what’s next in the fight against aging.
new Method Spots Senescent Cells, Advancing aging Research
Scientists in Tokyo have developed a novel, label-free method to identify senescent cells, offering new avenues for research into aging and related diseases. These aged cells, which accumulate over time, contribute to inflammation and conditions such as Alzheimer’s, arterial hardening, and type 2 diabetes.
The current methods for identifying these cells are complex and can alter the cells themselves. Assistant Professor Ippei Yagi from Tokyo Metropolitan University and his team sought a better way, resulting in a study published in the IEEE Sensors Journal.
Instead of using chemical labels, the team exposed cells to an alternating electric field. This causes a charge rearrangement within the cell. When a non-uniform electric field is applied, the cell migrates back and forth between electrodes as the field alternates.
The researchers found that by varying the frequency of the electric field, they could observe significant changes in a cell’s motion at a specific cutoff frequency. This method, called frequency-modulated dielectrophoresis (FM-DEP), characterizes cells by measuring this cutoff frequency.
Focusing on human dermal fibroblasts, a key component of skin connective tissue, the team discovered a distinct difference in cutoff frequencies between senescent and younger cells. These differences stem from changes in the lipid molecules within the cell membrane. The FM-DEP method is fast, simple, and doesn’t require labels, Yagi said.
This new method for identifying senescent cells promises to be a valuable tool in aging research, regenerative medicine, and drug screening. The team plans to expand the application of FM-DEP to other cell types, creating a versatile approach to cell identification for aging research.
More details: Ippei Yagi et al, Label-free Detection of Senescence-like State in Human Dermal Fibroblasts via Frequency-Modulated Dielectrophoresis, IEEE Sensors Journal (2025). DOI: 10.1109/JSEN.2025.3576789