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Simultaneous Imaging and Flow-Cytometry-based Detection of Multiple Fluorescent Senescence Markers in Therapy-Induced Senescent Cancer Cells
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Detecting senescence: a new method for an old pigment.
Hanna Salmonowicz1, João F Passos1
1Institute for Cell and Molecular Biosciences & Newcastle University Institute for Ageing, Newcastle upon Tyne, NE4 5PL, UK.
Aging Cell
|February 11, 2017
Summary
A new method using GL13 dye detects lipofuscin, a marker in senescent cells. This sensitive technique offers a more versatile approach for identifying senescent cells in various biological samples.
Area of Science:
- Cellular biology
- Gerontology
- Biochemistry
Background:
- Cellular senescence is a critical biological process involving irreversible cell cycle arrest.
- Despite advances, a universal biomarker for distinguishing senescent from proliferating cells remains elusive.
- Current methods for senescent cell identification can be limited in sensitivity and versatility.
Purpose of the Study:
- To develop a sensitive and versatile method for identifying senescent cells.
- To evaluate the efficacy of a novel lipofuscin detection technique.
- To provide a more feasible approach for senescent cell identification in diverse biological contexts.
Main Methods:
- Development of GL13, a biotinylated analogue of Sudan Black B (SBB) histochemical dye.
- Utilizing GL13 for the detection of lipofuscin, an oxidation product found in senescent cells.
- Application of the GL13 staining method to various biological materials, including cell cultures and tissues.
Main Results:
- GL13 demonstrated high sensitivity in detecting lipofuscin within senescent cells.
- The GL13 method proved more versatile than traditional SBB staining.
- Successful identification of senescent cells across different biological samples using GL13.
Conclusions:
- GL13 staining represents a sensitive and versatile tool for identifying senescent cells.
- Lipofuscin detection via GL13 offers a promising alternative to existing biomarkers.
- This method enhances the feasibility of senescent cell identification in both in vitro and in vivo studies.
