Tissue-resident Memory T Cells
Tissue-resident Memory T Cells - Related Videos
09:48
In Vitro Resident Memory CD8 T Cell Differentiation Using Epithelial Organoid-T Cell Co-culture System
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2026
To study CD8 T cell differentiation and function in vitro, CD8 T cells can be isolated from the mouse to be co-cultured long-term with preformed infected murine vaginal epithelial organoids. Here, we describe this process and assess the acquisition of resident memory T cell markers upon co-culture.
09:42
A Chronic Autoimmune Dry Eye Rat Model with Increase in Effector Memory T Cells in Eyeball Tissue
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Cited by 10 •
2017
This report describes a method to induce chronic experimental autoimmune dry eye in Lewis rats through immunization with an emulsion of rat lacrimal gland extract, ovalbumin, and complete Freund's adjuvant, followed by the injection of lacrimal gland extract and ovalbumin into the forniceal subconjunctiva and lacrimal glands six weeks later.
10:53
Shape Memory Polymers for Active Cell Culture
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Cited by 25 •
2011
A method for developing cell culture substrates with the ability to change topography during culture is described. The method makes use of smart materials known as shape memory polymers that have the ability to memorize a permanent shape. This concept is adaptable to a wide range of materials and applications.
09:13
A Real-world What-Where-When Memory Test
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Cited by 3 •
2017
The Real-World What-Where-When memory test is a novel episodic memory test, in which participants need to recall which objects have been hidden in which locations on which of two distinct occasions. It is easy to run and is sensitive to normal cognitive aging.
14:23
Generation of Induced Regulatory T Cells from Primary Human Naïve and Memory T Cells
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Cited by 29 •
2012
We describe a method for generating regulatory, memory and naïve T cells from a single human blood donor. Polarized Tregs can be then compared to other subsets in a variety of genetic and functional applications with genetic homogeneity, including a suppression assay also detailed here.
FAQs
Transforming growth factor beta contributes to the tissue-adaptation program that keeps these cells within peripheral tissues. CD69 and CD103 serve as characteristic markers of this state and support retention while limiting recirculation. Together, these signals help establish a localized immune population positioned near sites where previously encountered pathogens may return, rather than relying solely on circulating memory cells.
The key distinction is their location and response position. Circulating memory T cells move through the body, whereas tissue-resident memory T cells remain in peripheral tissues after infection. This local positioning allows TRM cells to detect antigen re-exposure within the affected tissue and respond there, supporting rapid containment before protection depends on cells arriving from the circulation.
Local antigen re-exposure activates a rapid, coordinated response. TRM cells produce cytokines, recruit additional immune cells, and promote cytotoxic responses that help contain the infection. These activities connect immediate tissue recognition with broader local defense, allowing the response to influence neighboring immune cells and strengthen control of pathogens at the site of renewed exposure.
Tissue adaptation places long-lived memory cells where a recurring pathogen is most likely to be encountered. Signals such as transforming growth factor beta help maintain this specialized state, while CD69 and CD103 are associated with retention. The result is barrier immunity that can respond rapidly within a tissue, complementing protection provided by immune cells that continue to circulate.
Research on TRM cells can clarify how durable barrier immunity is maintained after an infection and how local immune responses are organized during antigen re-exposure. Investigators can relate tissue retention markers to cytokine production, immune-cell recruitment, and cytotoxic activity. These outcomes help explain why protection may be especially rapid and effective at previously infected sites.
TRM cell biology highlights the importance of generating or supporting immune memory in relevant peripheral tissues, not only in the circulation. Their tissue-adaptation signals, residency markers, and rapid responses to local antigen provide concepts that can inform vaccine strategies. The broader goal is to improve localized protection against pathogens that may reappear at specific tissue barriers.
Their persistent residence and ability to produce cytokines, recruit immune cells, and promote cytotoxic responses make TRM cells relevant beyond short-term protection. In chronic infection, these properties may inform therapeutic strategies aimed at tissue-localized immunity. The same biology also provides context for understanding tissue-specific inflammatory disease, where localized immune activity is an important consideration.