recombinant mouse cxcl13 blc bca 1 protein r d systems  (R&D Systems)

Journal: Frontiers in Immunology

Article Title: CXCR5 engineered human and murine Tregs for targeted suppression in secondary and tertiary lymphoid organs

doi: 10.3389/fimmu.2025.1513009

Figure Lengend Snippet: FVIII TRuCε CXCR5 Tregs display improved in vitro and in vivo persistence. (A) In vitro migration of FVIII CAR, FVIII CAR CXCR5, and FVIII TRuCε transduced Tregs through a transwell in response to either serum free media, CXCL12 or CXCL13 gradients. Number of migrated mScarlet + cells at the bottom of the transwell are quantified by flow cytometry following 6hrs of incubation. (B) Kinetics of in vivo migration of adoptively transferred FVIII TRuCε or FVIII TRuCε CXCR5 T conv cells to the spleen on days 1, 2, 4, and 7 following adoptive transfer. Mice received i.v. injections of recombinant FVIII on days 0, 3, and 6. Frequencies of mScarlet + cells per total CD4 + T cells are quantified by flow cytometry. (C) Number of mScarlet + FVIII TRuCε or FVIII TRuCε CXCR5 Tregs per 10 7 CD4 + T cells are quantified from spleens and (D) inguinal lymph nodes (ILN) on day 7 post adoptive transfer. Data represents mean±SEM, ****p<0.0001, ∗p < 0.05, ∗∗p < 0.01 using 2-way ANOVA with Tukey’s multiple comparisons analysis for (A) , 2-way ANOVA with Sidak’s multiple comparisons analysis for (B) , unpaired t test for (C, D) .

Article Snippet: Lower chambers contained 600 μL serum-free medium with 1μg/mL of either recombinant mouse CXCL12 or CXCL13 (PeproTech, Rocky Hill, NJ).

Techniques: In Vitro, In Vivo, Migration, Flow Cytometry, Incubation, Adoptive Transfer Assay, Recombinant

Journal: Nature Communications

Article Title: Human single cell RNA-sequencing reveals a targetable CD8 + exhausted T cell population that maintains mouse low-grade glioma growth

doi: 10.1038/s41467-024-54569-4

Figure Lengend Snippet: A Schematic representation of the anti-PD1 (α-PD1), anti-TIGIT (α-TIGIT), and combined (α-PD1 + TIGIT) antibody treatments. Nf1 -OPG mice were treated (200 µg/dose/ i.p., twice per week) from 12 to 16 weeks of age, and tissues were analyzed at 16 weeks. The control group was injected with anti-IgG isotype control antibodies. Created in BioRender. Chatterjee, J. (2024) BioRender.com/r98n914. B Immunohistochemistry and quantification CD8 + T cells in the entire optic nerve (IgG, n = 10 mice; α-TIGIT, n = 10 mice; α-PD1, n = 6 mice; α-PD1 + TIGIT, n = 5 mice). Data are represented as mean ± SD. A one-way ANOVA test was performed followed by a Dunnett’s post-test correction. Exact P values are indicated (α-TIGIT, P = 0.0054; α-PD1, P = 0.0003; α-PD1 + TIGIT, P = 0.0032). Scale bar, 200 µm. C Ccl2 RNA expression in the optic nerves of Nf1 -OPG mice treated with IgG, α-TIGIT, α-PD1 or a combination of α-PD1 and α-TIGIT antibodies. Data are represented relative to the IgG control group (IgG, n = 5, 2 pooled optic nerves per sample; α-TIGIT n = 5, 2 pooled optic nerves per sample; α-PD1, n = 4, 2 pooled optic nerves per sample; α-PD1 + TIGIT, n = 4, 2 pooled optic nerves per sample). Data are represented as mean ± SD. A one-way ANOVA test was performed followed by a Dunnett’s post-test correction. Exact P values are indicated. D Volcano plot showing fold change and P value comparing Nf1 -OPG TAM to Nf1 +/ and WT monocytes in the optic nerves of 12-week-old mice. Upregulated genes in red, downregulated genes in blue. Differential analyses were performed using gene specific analysis (GSA). E Ccr2, Cxcr3 , and Cxcr5 expression in T cell populations from 12-week-old Nf1 -OPG mouse optic nerves, color-coded by T cell type. F Cxcl9, Ccl12 , and Cxcl13 RNA expression in the optic nerves of 12-week-old WT and Nf1 -OPG mice. Data are represented relative to the WT group ( Cxcl9 ; WT n = 3, 2 pooled optic nerves per sample; Nf1 -OPG n = 4, 2 pooled optic nerves per sample; Ccl12 ; WT n = 4, 2 pooled optic nerves per sample; Nf1 -OPG n = 4, 2 pooled optic nerves per sample; Cxcl13 ; WT n = 4, 2 pooled optic nerves per sample; Nf1 -OPG n = 4, 2 pooled optic nerves per sample). Data are represented as mean ± SD. To evaluate statistical differences, a two-tailed non-parametric Mann–Whitney test was performed. Exact P values are indicated. ns, not significant. G Graph showing the percentage of migrated Nf1 +/- CD8 + T cells treated with medium (Control) ( n = 5), Ccl12 ( n = 6), or Cxcl13 ( n = 5). Data are represented as mean ± SD. A one-way ANOVA test was performed followed by a Dunnett’s post-test correction. Exact P values are indicated. Created in BioRender. Chatterjee, J. (2024) BioRender.com/r98n914. H Ccl12 RNA expression in the optic nerves of Nf1 -OPG mice treated with IgG, α-TIGIT, α-PD1 or a combination of α-PD1 and α-TIGIT antibodies. Data are represented relative to the IgG control group (IgG, n = 5, 2 pooled optic nerves per sample; α-TIGIT n = 5, 2 pooled optic nerves per sample; α-PD1, n = 4, 2 pooled optic nerves per sample; α-PD1 + TIGIT, n = 3, 2 pooled optic nerves per sample). Data are represented as mean ± SD. A one-way ANOVA test was performed followed by a Tukey’s post-test correction. Exact P values are indicated (α-TIGIT, P = 0.0012; α-PD1, P = 0.0187; α-PD1 + TIGIT, P = 0.0013). I Cxcl13 RNA expression in the optic nerves of Nf1 -OPG mice treated with IgG, α-TIGIT, α-PD1 or a combination of α-PD1 and α-TIGIT antibodies. Data are represented relative to the IgG control group (IgG, n = 4, 2 pooled optic nerves per sample; α-TIGIT n = 4, 2 pooled optic nerves per sample; α-PD1, n = 4, 2 pooled optic nerves per sample; α-PD1 + TIGIT, n = 4, 2 pooled optic nerves per sample). Data are represented as mean ± SD. A one-way ANOVA test was performed followed by a Tukey’s post test correction. Exact P values are indicated (α-TIGIT, P = 0.0003; α-PD1, P = 0.0007; α-PD1 + TIGIT, P = 0.0001).

Article Snippet: 500 μl of chemoattractant media (Ccl12 [25 ng/ml, 428-P5-025- R&D systems ] and Cxcl13 [1 μg/ml, 470-BC-025- R&D systems] ) was added to the lower chamber, and the number of T cells in the lower chambers counted 6 h later.

Techniques: Control, Injection, Immunohistochemistry, RNA Expression, Expressing, Two Tailed Test, MANN-WHITNEY

Journal: International Journal of Molecular Sciences

Article Title: Syndecan-1 Plays a Role in the Pathogenesis of Sjögren’s Disease by Inducing B-Cell Chemotaxis through CXCL13–Heparan Sulfate Interaction

doi: 10.3390/ijms25179375

Figure Lengend Snippet: Identification of CXCL13 binding to syndecan-1 (SDC-1). ( A ) Co-expression of SDC-1 and CXCL13 in submandibular gland tissues of NOD/ShiLtJ mice. Each section was double-stained with immunofluorescent antibodies to determine the distribution of SDC-1 (CD138, red) and CXCL13 (green) on the epithelial cells. The sections were counterstained with 4′,6-diamidino-2-phenylindole (DAPI, blue). The merged images obtained by confocal microscopy show the yellow co-localization of both molecules. Magnified views of the boxed areas are shown in the right column. Scale bars = 50 and 25 µm. ( B ) Co-expression of SDC-1 and CXCL13 on normal murine mammary gland (NMuMG) cells. NMuMG cells were double-stained with anti-CXCL13 mAb (green) and anti-SDC-1 mAb (red). The sections were counterstained with DAPI (blue). Scale bar = 25 µm. ( C ) Association of SDC-1 with CXCL13 at the cell surface of NMuMG cells. NMuMG cells were incubated with 0, 50, 100, and 150 nM recombinant mouse CXCL13 for 18 h. The cell pellets of NMuMG cells were harvested following the protocol outlined in the Pierce™ Classic Magnetic IP/Co-IP Kit. The cell lysates were incubated with mouse anti-SDC-1 antibody, and anti-SDC-1 antibody binding complexes were analyzed by Western blotting assay with antibody against CXCL13 (Novus Biologicals, Centennial, CO, USA) or rat immunoglobulin G (control, Santacruz, Dallas, TX, USA).

Article Snippet: Recombinant mouse CXCL13 was purchased from R&D Systems (Minneapolis, MN, USA), and PierceTM Classic Magnetic IP/Co-IP Kit was obtained from Thermo Fisher Scientific (Waltham, MA, USA).

Techniques: Binding Assay, Expressing, Staining, Confocal Microscopy, Incubation, Recombinant, Co-Immunoprecipitation Assay, Western Blot, Control