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Changes in Tissue-Specific Innate Lymphoid Cell Populations during Rat Development.
Hüseyin Yiğit1, Şerife Erdem2, İnayet Nur Uslu3
1Department of Anatomy, Institute of Health Sciences, Erciyes University, Kayseri, Turkey, anatomisth@gmail.com.
Cells, Tissues, Organs
|September 18, 2025
Summary
This study maps innate lymphoid cell (ILC) populations in developing rats, revealing dynamic shifts in ILC1, ILC2, and ILC3 subtypes across various organs from embryonic stages to postnatal day 30.
Area of Science:
- Immunology
- Developmental Biology
- Cell Biology
Background:
- Innate lymphoid cells (ILCs) are critical immune regulators involved in tissue homeostasis and repair.
- ILCs comprise ILC1, ILC2, and ILC3 subsets, defined by cytokine profiles similar to T helper cells.
- Understanding ILC development in preclinical models like rats is essential for immune research.
Purpose of the Study:
- To characterize the developmental dynamics of tissue-specific ILC populations in rats.
- To map ILC subset distribution from embryonic to postnatal stages (PN30).
Main Methods:
- Flow cytometry was employed to analyze ILC subsets.
- Surface and intracellular staining were performed on cells from various rat organs.
Main Results:
- Significant developmental changes in ILC1, ILC2, and ILC3 populations were observed across organs like the liver, lung, spleen, and intestines.
- Specific ILC subset dominance shifted during development; for example, liver ILC3s decreased postnatally while ILC1s and ILC2s increased.
- The mesenteric lymph nodes consistently showed a predominance of ILC2s throughout development.
Conclusions:
- This research provides a comprehensive developmental atlas of ILCs in key rat organs.
- Findings enhance the utility of the rat model for studying ILCs in developmental immunology and disease.
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