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ICC/IF for Anti-Neuroligin-3 [IPI-mNLGN3.18] in binding assay

Addgene #219629

Data Submitted By
Alexander Morano , Travis Riedel and Deborah Moshinsky
Lab Name
Institute for Protein Innovation (IPI)
Submission Date
October 24, 2025
Publication Date
November 10, 2025 (modified November 11, 2025)
DOI
https://doi.org/10.57733/addgene.ndvmzb
Abstract
Experimental results for Anti-Neuroligin-3 [IPI-mNLGN3.18] (Addgene #219629) in an immunofluorescence (IF) binding assay with ExpiCHO cells expressing V5-tagged mouse or human NLGN3.
Citation
ICC/IF for Anti-Neuroligin-3 [IPI-mNLGN3.18] in binding assay. Morano A, Riedel T, Moshinsky D 2025. Addgene Report, https://doi.org/10.57733/addgene.ndvmzb
Caption: A) Immunofluorescence (IF) of ExpiCHO cells transfected with human (top) and mouse (bottom) NLGN3 and labeled with Anti-Neuroligin-3 [IPI-mNLGN3.18] (Addgene #219629). Left images show all three channels (IPI-NLGN3.18, GFP (transfection control) and DAPI) while the right images only show IPI-NLGN3.18 and DAPI. Images taken at 40X magnification. B) Combined quantification of multiple images of the same transfected cells taken at 10X magnification. IPI-NLGN3.18 labeling of human (left) and mouse (right) NLGN3 is shown in the top row, and compared to a positive (left) and negative (right) control in the bottom row. For both panels, NLGN3.18 was used at 0.1 ug/mL (1:10,000 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-Neuroligin-3 [IPI-mNLGN3.18]
Addgene #219629
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
ExpiCHO
Additional Information
ExpiCHO cells were transiently transfected with GFP (transfection control) and V5-tagged mouse NLGN3

Buffer

Name
PBS

Fixative

Fixative
Formaldehyde/Paraformaldehyde
Time
15 min
Temperature
Room Temperature

Permeabilization

Agent
Triton X-100 in PBS
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-Neuroligin-3 [IPI-mNLGN3.18]
Source
Addgene
Catalog Number
219629
Host Species
Rabbit
Target Antigen
NLGN3
Concentration
0.1 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
Concentration
2 µg/mL
Time
60 min
Temperature
Room Temperature

Additional Information

Additional Information

Widefield images taken at 40X magnification on an EVOS-m7000 microscope and deconvolved using the Richardson-Lucy algorithm in the FIJI deconlab plugin.

For quantitative data, GFP-positive cells were identified via the neural network CellPose, then the mean fluorescence intensity (MFI) of the far-red channel for each cell, representing IPI-mNLGN3.18 labeling, was recorded. Each histogram displays the number of cells with MFIs ranging from below 100 (background fluorescence) to 4095 (saturation).

Controls

Positive control: Anti-V5 [IPI-SV5-Pk1] (Addgene #218107) used to confirm IF labeling efficacy (since construct expressing target also has a V5 tag).

Negative control: Rabbit IgG used to confirm transfected construct does not interact /produce signal with every antibody.

Results

Result
Pass (The antibody worked under these conditions)
Describe Results
The antibody shows binding to human and mouse NLGN3.