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ICC/IF for Anti-Neurexin-2-beta [IPI-NRXN2b.9] (Addgene #273809) in siRNA KD assay

Addgene #237809

Data Submitted By
Alexander Morano , Travis Riedel and Deborah Moshinsky
Lab Name
Institute for Protein Innovation (IPI)
Submission Date
November 12, 2025
Publication Date
December 11, 2025 (modified December 11, 2025)
DOI
https://doi.org/10.57733/addgene.gf6zps
Abstract
Experimental results for Neurexin-2-beta [IPI-NRXN2b.9] (Addgene #273809) in an immunofluorescence (IF) assay with NCIH446 cells treated with siRNA against NRXN2.
Citation
ICC/IF for Anti-Neurexin-2-beta [IPI-NRXN2b.9] (Addgene #273809) in siRNA KD assay. Morano A, Riedel T, Moshinsky D 2025. Addgene Report, https://doi.org/10.57733/addgene.gf6zps
Caption: (A) Immunofluorescence (IF) of NCIH446 cells treated with 20 nM siRNA against the housekeeping gene cyclophilin B (20 nM si-CYCB) or 20 nM siRNA against NRXN2 (20 nM si-NRXN2) for 90 hours, then probed for NRXN2 expression using Anti-Neurexin-2-beta [IPI-NRXN2b.9] (Addgene #237809) and for actin with Alexa Fluor 488-conjugated phalloidin. (B) Immunofluorescence (IF) of NCIH446 cells treated with 20 nM scrambled siRNA (20 nM siSCR) or 20 nM siRNA against housekeeping gene cyclophilin B (20 nM si-CYCB) for 90 hours, then probed for cyclophilin B expression using a commercial α-Cyclophilin B antibody and for actin with Alexa Fluor 488-conjugated phalloidin. Confocal images taken at 40X magnification on an ImageXpress HT confocal.ai microscope. Left images show all 3 channels (IPI-NRXN2b.9 or α-Cyclophilin B, actin, and DAPI) while the right images only show IPI-NRXN2b.9 or α-Cyclophilin B and DAPI. For panel A, NRXN2b.9 was used at 5 µg/mL (1:200 dilution).
Image attribution: Institute for Protein Innovation (IPI)

This report is made available under the Creative Commons Attribution 4.0 International License.

Antibodies Used
Anti-Neurexin-2-beta [IPI-NRXN2b.9]
Addgene #237809
Alexa Fluor 647 F(ab')2 fragment goat anti-rabbit IgG, Fc fragment-specific
Jackson ImmunoResearch #111-606-046

Materials & Methods

Sample

Target Species
Mouse
Cell / Tissue Type
NCIH446 cells
Additional Information
NCIH446 cells were treated with siRNA against housekeeping gene cyclophilin B (Horizon Research #D-001820-10-05) or against NRXN2 (Horizon Research #L-012905-01-0005).

Buffer

Name
PBS

Fixative

Fixative
Formaldehyde/Paraformaldehyde
Time
15 min
Temperature
Room Temperature

Permeabilization

Agent
Triton X-100
Concentration
0.20%
Time
10 min
Temperature
Room Temperature

Blocking

Agent
Normal goat serum + BSA
Concentration
5% serum, 5% BSA
Time
30 min
Temperature
Room Temperature

Primary Antibody

Name
Anti-Neurexin-2-beta [IPI-NRXN2b.9]
Source
Addgene
Catalog Number
237809
Host Species
Rabbit
Target Antigen
NRXN2b
Concentration
5 µg/mL
Time
60 min
Temperature
Room Temperature
View in Addgene Catalog

Secondary Antibody

Name
Alexa Fluor 647 F(ab')2 fragment goat anti-rabbit IgG, Fc fragment-specific
Source
Jackson ImmunoResearch
Catalog Number
111-606-046
Host Species
Goat
Concentration
2 µg/mL
Conjugate
Alexa Fluor 647
Time
60 min
Temperature
Room Temperature

Results

Result
Pass (The antibody worked under these conditions)
Describe Results
siRNA knockdown resulted in reduced labeling with IPI-NRXN2b.9 by a significant degree in cells expressing NRXN2 using a siRNA specific to NRXN2 but not with control siRNA.
Knockout Validation
Yes