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Updated: Aug 14, 2026
Simultaneous Imaging and Flow-Cytometry-based Detection of Multiple Fluorescent Senescence Markers in Therapy-Induced Senescent Cancer Cells
Published on: July 12, 2022
The senescent side of tumor suppression
Manuel Collado1, Manuel Serrano
1Molecular Oncology Program, Spanish National Cancer Centre (CNIO), Madrid, Spain.
Oncogene-induced senescence (OIS) acts as a tumor suppressor by halting cancer cell growth. This study identifies OIS markers and shows senescence prevents tumor development in vivo.
Area of Science:
- Cellular biology
- Oncology
- Cancer research
Background:
- Neoplastic transformation is rare, requiring cells to overcome anti-tumoral responses.
- Oncogene-induced senescence (OIS) is a key tumor suppressor mechanism against uncontrolled proliferation.
- Previous OIS analysis was limited to cultured cells.
Purpose of the Study:
- To identify novel molecular markers for OIS.
- To demonstrate the occurrence of OIS in vivo.
- To investigate the role of OIS in tumor suppression.
Main Methods:
- Identification of novel molecular markers for OIS.
- Utilizing mouse models of oncogenic activation.
- Analysis of senescence in premalignant and malignant lesions.
Main Results:
- Senescent cells were abundant in premalignant lesions (skin, lung, pancreas) in mouse models.
- Senescent cells were rare in malignant lesions from the same animals.
- OIS occurs in vivo and actively restricts tumor development.
Conclusions:
- OIS plays a significant role in preventing tumor progression in vivo.
- Senescence markers show potential as diagnostic and prognostic tools.
- Senescence-inducing drugs may offer therapeutic benefits in cancer treatment.
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