Related Experiment Video
Updated: Jul 11, 2026
06:07
Measuring Mitochondrial Function of Naïve and Effector CD8 T Cells
Published on: March 28, 2025
miRNA profiling of naïve, effector and memory CD8 T cells
Haoquan Wu1, Joel R Neilson, Priti Kumar
1The CBR Institute for Biomedical Research and Department of Pediatrics, Harvard Medical School, Boston, Massachusetts, United States of America.
Plos One
|October 11, 2007
Summary
MicroRNA (miRNA) expression dynamically changes during T cell differentiation. This study reveals key miRNAs involved in T cell regulation and suggests novel miRNA biogenesis mechanisms.
Area of Science:
- Immunology
- Molecular Biology
- Genetics
Background:
- MicroRNAs (miRNAs) are critical regulators of gene expression.
- The role of miRNAs in antigen-induced T cell differentiation is largely unknown.
- T cell differentiation involves significant gene expression alterations.
Purpose of the Study:
- To investigate miRNA expression profiles in naïve, effector, and memory CD8+ T cells.
- To identify specific miRNAs involved in T cell differentiation.
- To explore novel mechanisms of miRNA biogenesis and function.
Main Methods:
- Small RNA cloning
- miRNA microarray analysis
- Real-time PCR
Main Results:
- A distinct miRNA expression profile was observed across T cell subsets.
- Global miRNA downregulation occurred in effector T cells, with partial recovery in memory cells.
- Specific miRNAs, like miR-21, showed increased expression in effector and memory T cells.
- End polymorphism in cloned mature miRNAs suggests novel biogenesis pathways.
Conclusions:
- miRNA profiles change dynamically during antigen-induced T cell differentiation.
- Dynamic miRNA expression is likely crucial for regulating gene expression in T cells.
- Novel mechanisms for miRNA generation and target selection may exist.
Related Concept Videos
01:22T Cell Activation and Clonal Selection
T cells are integral to our adaptive immune system, recognizing and effectively responding to foreign antigens. T cell activation and clonal selection are pivotal in orchestrating this immune response. This article elucidates these mechanisms, detailing the roles of cluster of differentiation (CD) markers, major histocompatibility complex (MHC) molecules, costimulatory signals, and the process of clonal selection.
Naive T cells that have not yet encountered an antigen express two primary CD...
Naive T cells that have not yet encountered an antigen express two primary CD...
01:27Cytotoxic T Cells-mediated Immune Response
Cytotoxic T cells are a vital component of the immune system. They have the remarkable ability to identify and target antigens on infected or abnormal cells. These antigens often originate from intracellular pathogens such as viruses or abnormal proteins cancer cells produce.
Immunological surveillance is the ability of immune cells to monitor and eliminate infected cells with intracellular pathogens, neoplastically transformed cells, and cells with non-self antigens. Cytotoxic T cells and NK...
Immunological surveillance is the ability of immune cells to monitor and eliminate infected cells with intracellular pathogens, neoplastically transformed cells, and cells with non-self antigens. Cytotoxic T cells and NK...
01:23Cells of the Adaptive Immune Response
The T and B lymphocytes of the adaptive immune system develop from common lymphoid progenitor cells in the bone marrow. These progenitors give rise to precursors that eventually develop into both T and B lymphocytes. As these precursors mature, they gain the ability to detect and respond to foreign antigens in the body, a process known as immunocompetence. Additionally, these precursors acquire self-tolerance, a process that ensures they do not react to self-antigens. This intricate system...