Nr2B (Grin2B) Neurons is an important cell type in the neurobiology of neurodegenerative diseases. This page provides detailed information about its structure, function, and role in disease processes.
NR2B (GRIN2B) neurons express the NMDA receptor subunit 2B, also known as GluN2B or NMDAR2B. This subunit is a critical component of NMDA-type glutamate receptors, which are essential for synaptic plasticity, learning, memory, and excitatory neurotransmission. NR2B-containing receptors have distinct pharmacological and biophysical properties, including slower deactivation kinetics and higher Ca2+ permeability compared to NR2A-containing receptors. These receptors are particularly abundant during development and in certain brain regions in adulthood. [1]
The GRIN2B gene encodes the NMDA receptor NR2B subunit, a 1804-amino acid protein. The GRIN2B protein is a transmembrane receptor with: [2]
Structure [3]
NR2B assembles with: [4]
GRIN2B expression shows:
Multiple sites regulate function:
NR2B is enriched in:
Striatum
Thalamus
NR2B-containing NMDA receptors are found at:
NR2B mediates forms of LTPmechanisms/long-term-potentiation) and LTD:
NR2B is critical for:
During brain development:
NR2B receptors have high Ca2+ permeability:
Under pathological conditions:
AD involves NR2B alterations:
Epilepsy and NR2B:
Schizophrenia shows:
NR2B in injury:
GRIN2B mutations cause:
NR2B in ASD:
NR2B-selective antagonists:
Enhancing NR2B function:
Low-affinity NMDA blocker:
NMDA partial agonist:
Studying NR2B through:
Mouse models:
In vivo studies:
Spine dynamics
Calcium imaging
Synaptic plasticity
GRIN2B Gene
GRIN2B Protein
Pyramidal Neurons
Hippocampal Neurons
Glutamate Signaling Pathway
Epilepsy
Schizophrenia
The study of Nr2B (Grin2B) Neurons has evolved significantly over the past decades. Research in this area has revealed important insights into the underlying mechanisms of neurodegeneration and continues to drive therapeutic development.
Historical context and key discoveries in this field have shaped our current understanding and will continue to guide future research directions.