cxcl13 level (OriGene)
Structured Review

Cxcl13 Level, supplied by OriGene, used in various techniques. Bioz Stars score: 94/100, based on 5 PubMed citations. ZERO BIAS - scores, article reviews, protocol conditions and more
https://www.bioz.com/result/cxcl13 level/product/OriGene
Average 94 stars, based on 5 article reviews
Images
1) Product Images from "CXCR5 guides migration and tumor eradication of anti-EGFR chimeric antigen receptor T cells"
Article Title: CXCR5 guides migration and tumor eradication of anti-EGFR chimeric antigen receptor T cells
Journal: Molecular Therapy Oncolytics
doi: 10.1016/j.omto.2021.07.003
Figure Legend Snippet: Restricted normal T cell expression of CXCR5 and upregulation of CXCL13 in non-small cell lung cancer (NSCLC) (A) The expression of CXCL13 in patients with lung adenocarcinoma (LUAD) and lung squamous cell carcinoma (LUSC) using the online tool of GEPIA. (B) CXCL13 protein expressions in NSCLC tissues were confirmed by immunohistochemistry on two tissue microarray slides (NSC157 and LC20813b). The intensity of immunostaining was graded as follows: −, negative; +, weak; ++, moderate; or +++, strong. (C) Expression of CXCL13 by immunohistochemistry. The subpanels show negative expression of CXCL13 (−), weak (+), moderate (++), and strong (+++) expressions of CXCL13 in tumor tissues ( ×400). (D) ELISA quantification of the level of CXCL13 protein in plasma samples (healthy donors n = 34, NSCLC patient donors n = 95). Single dot represents individual plasma sample. Error bars represent mean ± SD. ∗∗∗p < 0.001. (E) FACS analysis of the expression of different chemokine receptors from resting and activated T cells. Single dot represents individual sample. Error bars represent mean ± SD for each T cell population (n = 12).
Techniques Used: Expressing, Immunohistochemistry, Microarray, Immunostaining, Enzyme-linked Immunosorbent Assay
Figure Legend Snippet: Evaluation of the antitumor efficacy and chemotaxis migration of EGFR-CXCR5-CAR-T cells in vitro (A) Analysis of the cytotoxicity of EGFR-CXCR5-CAR-T cells against PC9, A549, and K562 cells. Tumor cell killing was measured via an IncuCyte assay over 48 h. SYTOX Green and CellTrace Far Red double-positive tumor cells (yellow) were calculated. Error bars represent mean ± SD for each time point. (B) Real-time cell killing image. Target cells were red, and CAR-T cells were green. (C) Cytokine production by CAR-T cells co-cultured with PC9 tumor cells. CAR-T cells were co-cultured 10:1 with tumor cells in 96-well plates for 20 h. Levels of IFN-γ and IL-2 in supernatant were determined by ELISA. Error bars represent mean ± SD for each group. (D) Chemotaxis migration of CAR-Ts toward various concentrations of recombinant human CXCL13 at different time courses of 4 h, 8 h, and 16 h. Error bars represent mean ± SD for each group (n = 3). ∗p < 0.05 derived via unpaired t test. (E) CAR-T cell proliferation assay with indicated CAR-T cells cocultured with various concentrations of recombinant human CXCL13.
Techniques Used: Chemotaxis Assay, Migration, In Vitro, Cell Culture, Enzyme-linked Immunosorbent Assay, Recombinant, Derivative Assay, Proliferation Assay
Figure Legend Snippet: In vivo tracking of the migration of 89 Zr-oxine-labeled CAR-T to A549 and A549-CXCL13 tumors using micro-PET/CT scan (A) EGFR expression in the A549 cell line stably expressing the CXCL13 gene (A549-CXCL13) after lentiviral transduction and selection. (B) Increased secretion of CXCL13 generated by A549-CXCL13 cells. ∗∗∗p < 0.001. (C) The effects of 89 Zr-oxine labeling on T cell proliferation. (D) Whole-body PET imaging, quantitative PET analysis, and biodistribution of 89 Zr-labeled T cells in tumor-bearing mice. 89 Zr-labeled mock T cells, 89 Zr-EGFR-CAR-T cells, or 89 Zr-EGFR-CXCR5-CAR-T cells were tail-vein injected into NSG mice inoculated with A549 tumor cells at the left and A549-CXCL13 tumor cells at the right side. Isotopic distribution of 89 Zr was quantified and plotted in a coronal horizon map at different time points of 2, 24, 72, and 168 h post-injection. The red and green circles represent the A549 tumor region and A549-CXCL13 tumor region, respectively. (E) Accumulated isotope signaling in A549 tumor region (green circle) and A549-CXCL13 tumor region (red circle). The percentage injection dose rate ([%ID]/g value) was calculated. Error bars represent mean ± SD for each group (n = 3).
Techniques Used: In Vivo, Migration, Labeling, Micro-PET, Computed Tomography, Expressing, Stable Transfection, Transduction, Selection, Generated, Imaging, Injection
Figure Legend Snippet: Antitumor efficacy of CAR-T cells in vivo (A) Serial bioluminescence imaging of NSG mice injected subcutaneously with A549 luc cells on the left flank and A549 luc -CXCL13 cells on the right flank. 10 days after tumor engraftment, the mice were injected with 5 × 10 5 CAR + T cells as indicated. n = 5 mice per group. Error bars represent mean ± SD for each time point (n = 5). (B) The tumor volume of the left tumors (A549 luc ) and right tumors (A549 luc -CXCL13) over 28 days was measured. Error bars represent mean ± SD for each time point (n = 5). (C) The copy number of CAR gene in the left and right tumor tissues was analyzed. ∗∗p < 0.01.
Techniques Used: In Vivo, Imaging, Injection
Figure Legend Snippet: Addition of CXCR5 facilitates T cell migration The chemokine CXCL13 is highly expressed in various tumors including lung carcinoma, whereas the classical CAR-T does not effectively infiltrate into tumor regions due to the absence of CXCR5 receptor expression. Chemotactic movement is a taxis in response to a chemical concentration gradient. When CAR-T cells are modified with the CXCR5 receptor, the motorized CAR-T cells could infiltrate into the tumor site along the gradient of CXCL13 to further clear the tumor cells.
Techniques Used: Migration, Expressing, Concentration Assay, Modification



