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Updated: Jun 8, 2026

Simultaneous Imaging and Flow-Cytometry-based Detection of Multiple Fluorescent Senescence Markers in Therapy-Induced Senescent Cancer Cells
Published on: July 12, 2022
Therapy-induced senescence in cancer
Jonathan A Ewald1, Joshua A Desotelle, George Wilding
1Department of Urology, University of Wisconsin, School of Medicine and Public Health, 1111 Highland Ave, Madison, WI 53705-2275, USA.
Abstract:
Cellular senescence is a response to nonlethal stress that results in persistent cytostasis with a distinct morphological and biochemical phenotype. The senescence phenotype, detected in tumors through the expression of mRNA and protein markers, can be generated in cancer cells lacking functional p53 and retinoblastoma protein. Current research suggests that therapy-induced senescence (TIS) represents a novel functional target that may improve cancer therapy. TIS can be induced in immortal and transformed cancer cells by selected anticancer compounds or radiation, and accumulating data indicate that TIS may produce reduced toxicity-related side effects and increased tumor-specific immune activity. This review examines the current status of TIS-regulated mechanisms, agents, and senescence biomarkers with the goal of encouraging further development of this approach to cancer therapy. Remaining hurdles include the lack of efficient senescence-inducing agents and incomplete biological data on tumor response. The identification of additional compounds and other targeted approaches to senescence induction will further the development of TIS in the clinical treatment of cancer.
Insights
Therapy-induced senescence (TIS) offers a promising cancer treatment strategy by causing cancer cells to stop dividing. This approach may reduce side effects and enhance anti-tumor immunity, though more research is needed.
Area of Science:
- Oncology
- Cell Biology
- Immunology
Background:
- Cellular senescence is a stable cell cycle arrest triggered by stress, characterized by specific molecular and morphological changes.
- Senescence markers are detectable in tumors, and senescence can be induced in cancer cells lacking key tumor suppressors like p53 and retinoblastoma protein.
Purpose of the Study:
- To review the current understanding of therapy-induced senescence (TIS) as a cancer treatment strategy.
- To highlight the mechanisms, agents, and biomarkers associated with TIS.
- To identify challenges and encourage further development of TIS in clinical oncology.
Main Methods:
- Review of existing literature on cellular senescence and TIS.
- Analysis of TIS induction by anticancer compounds and radiation.
- Examination of TIS-related mechanisms, agents, and biomarkers.
Main Results:
- TIS can be induced in cancer cells, potentially leading to reduced toxicity and enhanced anti-tumor immune responses.
- Current research indicates TIS as a novel functional target for improving cancer therapy outcomes.
- Challenges remain, including the need for more effective senescence-inducing agents and comprehensive data on tumor response.
Conclusions:
- Therapy-induced senescence (TIS) presents a promising avenue for cancer treatment with potential for reduced side effects and improved immune engagement.
- Further research into novel senescence-inducing compounds and targeted approaches is crucial for advancing TIS in clinical practice.
- Overcoming current hurdles will facilitate the broader application of TIS in cancer therapy.
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