Senescence-associated Secretory Phenotype
Senescence-associated Secretory Phenotype - Related Videos
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A Quantitative Measurement of Reactive Oxygen Species and Senescence-associated Secretory Phenotype in Normal Human Fibroblasts During Oncogene-induced Senescence
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2018
Intracellular ROS has been shown to play an important role in the induction of cellular senescence. Here, we describe a sensitive assay for quantifying ROS levels during cellular senescence. We also provide protocols for assessing the senescence-associated secretory phenotype, which reportedly contributes to various age-related dysfunctions.
06:51
Techniques to Induce and Quantify Cellular Senescence
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Cited by 180 •
2017
Cellular senescence, the irreversible state of cell-cycle arrest, can be induced by various cellular stresses. Here, we describe protocols to induce cellular senescence and methods to assess markers of senescence.
08:17
A Standardized Protocol for Inducing Stress-Induced Premature Senescence in Primary Human Melanocytes Using Tert-butyl Hydroperoxide
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2026
A standardized protocol for inducing premature senescence in HNM using tBHP, standardized protocols for analyzing key senescence markers, including growth arrest, SA-β-galactosidase activity, and SASP factors.
16:01
Investigating Mast Cell Secretory Granules; from Biosynthesis to Exocytosis
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Cited by 9 •
2015
The goal of the present protocol was to develop a method that will allow functional genomic analyses of mast cell secretion. The protocol is based on quantitative assessment of the release of a fluorescent reporter gene cotrasfected with the gene of interest and real time analyses of the secretory granule's morphology.
09:18
A Sensitive Method to Quantify Senescent Cancer Cells
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Cited by 39 •
2013
Whether senescence prevents or promotes tumorigenesis remains controversial. Since chemotherapeutical drugs can induce cancer cells to senesce, studying senescence is essential for proposing new therapies. However, the standard and broadly used β-galactosidase assay presents major drawbacks. We propose here a rapid and sensitive flow cytometry-based assay to quantify senescence.
FAQs
Persistent DNA damage and cellular stress activate signaling pathways that alter gene expression in senescent cells. NF-κB and p38 MAPK are highlighted as important regulators of this transition, linking intracellular stress signals to production of secreted factors. In cancer research, this connection helps explain how damage within one cell can generate broader inflammatory and microenvironmental effects.
These SASP components can influence the tumor environment through complementary forms of communication. Cytokines and chemokines contribute to inflammatory signaling and immune-cell recruitment, while growth factors can affect cancer-cell behavior. Proteases add another layer by modifying the surrounding environment. Examining the mixture rather than a single factor is therefore important when interpreting SASP-associated effects.
The consequences depend on which secreted factors are present and how surrounding cells respond to them. A SASP profile may intensify inflammation, recruit immune cells, influence cancer-cell growth, or alter treatment response. Because these outcomes are context-dependent, cancer studies must connect secretory signals with the specific microenvironmental changes and cellular behaviors observed.
Researchers can examine the cytokines, chemokines, growth factors, and proteases released by cells showing senescence-associated changes, then assess whether the resulting pattern supports identification of senescence. This approach focuses on the secretory profile as measurable evidence rather than relying on a single signal. In cancer research, such biomarkers can help characterize senescent cells within tumor-related settings.
Within tumors, SASP factors mediate communication between senescent cells and nearby cells. Their activity can reshape local inflammation, influence immune-cell recruitment, and affect cancer-cell growth or response to treatment. These changes make the secretory phenotype relevant not only to the senescent cell itself but also to tumor behavior and interactions among multiple cell populations.
Researchers can evaluate whether a strategy selectively eliminates senescent cells or suppresses harmful secretory signals, then examine how those changes relate to the tumor environment and cancer-cell behavior. Useful outcomes include altered inflammatory signaling, immune-cell recruitment, growth effects, or treatment response. This framework distinguishes approaches that remove the source from those that reduce its secretory consequences.