Related Experiment Video
Updated: Jun 17, 2026

Measuring Transcellular Interactions through Protein Aggregation in a Heterologous Cell System
Published on: May 22, 2020
LRRTM2 interacts with Neurexin1 and regulates excitatory synapse formation.
Joris de Wit1, Emily Sylwestrak, Matthew L O'Sullivan
1Neurobiology Section, Division of Biology, University of California, San Diego, La Jolla, CA 92093, USA.
Leucine-rich repeat transmembrane protein 2 (LRRTM2) regulates excitatory synapse development by interacting with Neurexin1. This interaction is crucial for forming functional excitatory synapses in the brain.
Area of Science:
- Neuroscience
- Molecular Biology
- Synaptic Plasticity
Background:
- Excitatory synapse development is critical for brain function.
- Key molecular regulators of synapse formation remain incompletely understood.
Purpose of the Study:
- To identify and characterize novel regulators of excitatory synapse development.
- To elucidate the molecular mechanisms underlying LRRTM2's role in synapse formation.
Main Methods:
- * In vitro transfection of hippocampal neurons.
- * shRNA-mediated knockdown of LRRTM2 and Neurexin1.
- * Immunoprecipitation and affinity chromatography.
- * In vivo lentivirus-mediated knockdown.
- * Electrophysiological recordings of synaptic currents.
Main Results:
- * LRRTM2 localizes to excitatory synapses and is essential for their development.
- * LRRTM2 regulates AMPA receptor surface expression and synaptic current strength.
- * The extracellular LRR domain of LRRTM2 mediates presynaptic differentiation.
- * Neurexin1 acts as a receptor for LRRTM2, mediating its presynaptic effects.
Conclusions:
- * LRRTM2 is a key regulator of excitatory synapse development and function.
- * The LRRTM2-Neurexin1 interaction is critical for establishing excitatory synapses.
- * This pathway offers potential targets for understanding and treating neurological disorders.
More Related Videos
10:17Presynapse Formation Assay Using Presynapse Organizer Beads and “Neuron Ball” Culture
Published on: August 2, 2019
07:51Inhibitory Synapse Formation in a Co-culture Model Incorporating GABAergic Medium Spiny Neurons and HEK293 Cells Stably Expressing GABAA Receptors
Published on: November 14, 2014
Related Concept Videos
Enzyme-linked Receptors
Neurotrophin (NT) receptors are a family of RTKs, including trkA, trkB, and trkC (tropomyosin-related kinase) receptors. TrkA is specific for nerve growth factor (NGF), neurotrophin-6, and neurotrophin-7. TrkB binds...
Ligand-Gated Ion Channel Receptor: Gating Mechanism
Long-term Potentiation
Long-term Potentiation
Hebbian LTP
LTP can occur when presynaptic neurons...
Excitatory and Inhibitory Effects of Neurotransmitters
Long-term Depression
Calcium Ion Concentration Mechanism
If over time, all...