概要：HT22 is an immortalized cell line originating from the hippocampus region of a mouses brain.
This cell line is a subclone derived from the HT-4 cell line, which itself was created through the immortalization of mouse neuronal tissues using a temperature-sensitive SV40 T-antigen.
The HT22 cells, being highly sensitive to glutamate, serve as a valuable model system for studying glutamate-induced toxicity in neuronal cells.
Glutamate is a crucial excitatory neurotransmitter that functions as a signaling molecule between nerve cells and is involved in most aspects of standard brain functionality, including cognition, learning, and memory.
Several glutamate receptors, including NMDA, AMPA/Kainate, and metabotropic receptors (mGluR), are present in the brain.
While a normal amount of glutamate is essential for regular brain function, an excess can lead to nerve cell overexcitation, potentially resulting in cell damage and/or death.
Glutamate-induced cytotoxicity is associated with neurodegenerative disorders such as Alzheimers, Huntingtons, and Parkinsons diseases, as well as other conditions including spinal cord injuries and multiple sclerosis.
Therapies that can inhibit or reduce the effects of glutamate activity are of significant therapeutic interest.
The mouse hippocampal neuronal cell line HT22 is often employed as an in vitro model to scrutinize the role of hippocampal cholinergic neurons in cognitive functions.
Whether these cells exhibit the serotonergic neuronal phenotype seen in mature hippocampal neurons is yet to be determined.
