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DNA Damage-Induced Inflammatory Microenvironment and Adult Stem Cell Response
Davide Cinat1,2, Robert P Coppes1,2, Lara Barazzuol1,2
1Department of Biomedical Sciences of Cells and Systems, University Medical Center Groningen, University of Groningen, Groningen, Netherlands.
Frontiers in Cell and Developmental Biology
|October 25, 2021
Summary
DNA damage in adult stem cells triggers inflammatory responses that impact tissue homeostasis and regeneration. Understanding these DNA damage-induced immunomodulatory effects may reveal insights into age-related diseases and cancer.
Area of Science:
- Immunology
- Cell Biology
- Genetics
Background:
- Adult stem cells are crucial for tissue repair but accumulate DNA damage over time.
- Genotoxic stress activates inflammatory pathways, influencing the stem cell microenvironment.
Purpose of the Study:
- To review how DNA damage affects adult stem cell maintenance and function through microenvironmental changes.
- To explore the role of DNA sensing pathways and senescence in stem cell regulation and tissue outcomes.
Main Methods:
- Literature review of recent evidence on DNA damage, immunity, and stem cell interactions.
- Discussion of key molecular pathways involved in DNA sensing and inflammatory responses.
Main Results:
- DNA damage activates pathways like cGAS-STING, ZBP1, AIM2, and NLRP3 inflammasomes, leading to inflammation.
- Senescence, induced by persistent DNA damage, releases factors (SASP) that modulate the immune system.
- These responses can impair tissue homeostasis, cause degenerative conditions, or promote cancer stem cell activity.
Conclusions:
- DNA damage-induced immunomodulation significantly impacts stem cell microenvironments, affecting tissue homeostasis and regeneration.
- Further research into these mechanisms could lead to new strategies for age-related diseases and cancer treatment.
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