Synaptic vesicle glycoprotein 2A (SV2A) is a transmembrane protein belonging to a family of keratan sulfate proteoglycans, located on the synaptic vesicles of mammalian neuronal and endocrine cells. It's encoded by the SV2A gene. SV2A is the most widely expressed isoform of the SV2 family (which also includes the SV2B and SV2C proteins) found in all brain regions. The role of the SV2 proteins is not well understood, however they are thought to be involved in regulating vesicular processes. The SV2A protein is a target of the anti-epileptic drugs (anticonvulsants) levetiracetam and brivaracetam but it is not clear how these drug affect SV2A activity.
Background References
1. Bavarsad MS et al. SV2A PET imaging in human neurodegenerative diseases. Front Aging Neurosci. 2024 Apr
2. Wu PP et al. Development of SV2A Ligands for Epilepsy Treatment: A Review of Levetiracetam, Brivaracetam, and Padsevonil. Neurosci Bull. 2024 May
Immunohistochemical analysis of paraffin-embedded human cerebellum tissue with Rabbit anti-SV2A antibody (HA723233) at 1/500 dilution.
The section was pre-treated using heat mediated antigen retrieval with Tris-EDTA buffer (pH 9.0) for 20 minutes. The tissues were blocked in 1% BSA for 20 minutes at room temperature, washed with ddH2O and PBS, and then probed with the primary antibody (HA723233) at 1/500 dilution for 1 hour at room temperature. The detection was performed using an HRP conjugated compact polymer system. DAB was used as the chromogen. Tissues were counterstained with hematoxylin and mounted with DPX.
Immunohistochemical analysis of paraffin-embedded mouse cerebellum tissue with Rabbit anti-SV2A antibody (HA723233) at 1/2,000 dilution.
The section was pre-treated using heat mediated antigen retrieval with Tris-EDTA buffer (pH 9.0) for 20 minutes. The tissues were blocked in 1% BSA for 20 minutes at room temperature, washed with ddH2O and PBS, and then probed with the primary antibody (HA723233) at 1/2,000 dilution for 1 hour at room temperature. The detection was performed using an HRP conjugated compact polymer system. DAB was used as the chromogen. Tissues were counterstained with hematoxylin and mounted with DPX.
Immunohistochemical analysis of paraffin-embedded mouse pancreas tissue with Rabbit anti-SV2A antibody (HA723233) at 1/2,000 dilution.
The section was pre-treated using heat mediated antigen retrieval with Tris-EDTA buffer (pH 9.0) for 20 minutes. The tissues were blocked in 1% BSA for 20 minutes at room temperature, washed with ddH2O and PBS, and then probed with the primary antibody (HA723233) at 1/2,000 dilution for 1 hour at room temperature. The detection was performed using an HRP conjugated compact polymer system. DAB was used as the chromogen. Tissues were counterstained with hematoxylin and mounted with DPX.
Immunohistochemical analysis of paraffin-embedded rat cerebellum tissue with Rabbit anti-SV2A antibody (HA723233) at 1/2,000 dilution.
The section was pre-treated using heat mediated antigen retrieval with Tris-EDTA buffer (pH 9.0) for 20 minutes. The tissues were blocked in 1% BSA for 20 minutes at room temperature, washed with ddH2O and PBS, and then probed with the primary antibody (HA723233) at 1/2,000 dilution for 1 hour at room temperature. The detection was performed using an HRP conjugated compact polymer system. DAB was used as the chromogen. Tissues were counterstained with hematoxylin and mounted with DPX.
Immunohistochemical analysis of paraffin-embedded rat pancreas tissue with Rabbit anti-SV2A antibody (HA723233) at 1/500 dilution.
The section was pre-treated using heat mediated antigen retrieval with Tris-EDTA buffer (pH 9.0) for 20 minutes. The tissues were blocked in 1% BSA for 20 minutes at room temperature, washed with ddH2O and PBS, and then probed with the primary antibody (HA723233) at 1/500 dilution for 1 hour at room temperature. The detection was performed using an HRP conjugated compact polymer system. DAB was used as the chromogen. Tissues were counterstained with hematoxylin and mounted with DPX.
☑ Relative expression (RE)
Western blot analysis of SV2A on different lysates with Rabbit anti-SV2A antibody (HA723233) at 1/5,000 dilution.
Lane 1: Mouse brain tissue lysate Lane 2: NIH/3T3 cell lysate (negative) Lane 3: Rat brain tissue lysate
Lysates/proteins at 20 µg/Lane.
Predicted band size: 83 kDa Observed band size: 83 kDa
Exposure time: 42 seconds; ECL: K1801;
4-20% SDS-PAGE gel.
Proteins were transferred to a PVDF membrane and blocked with 5% NFDM/TBST for 1 hour at room temperature. The primary antibody (HA723233) at 1/5,000 dilution was used in primary antibody dilution at 4℃ overnight. Goat Anti-Rabbit IgG - HRP Secondary Antibody (HA1001) at 1/50,000 dilution was used for 1 hour at room temperature.
SV2A was immunoprecipitated from 0.2 mg mouse brain tissue lysate with HA723233 at 2 µg/10 µl beads. Western blot was performed from the immunoprecipitate using HA723233 at 1/2,000 dilution. HRP Conjugated Anti-Rabbit IgG for IP Nano-secondary antibody at 1/5,000 dilution was used for 1 hour at room temperature.
Lane 1: mouse brain tissue lysate (input) Lane 2: HA723233 IP in mouse brain tissue lysate Lane 3: Rabbit IgG instead of HA723233 in mouse brain tissue lysate