CLEC18A is an immune-modulatory protein expressed in myeloid cells and the liver. It enhances antiviral responses by acting as a TLR3 co-receptor and is implicated in hepatitis C-associated cryoglobulinemia .
CLEC18A antibodies localize to human kidney and stomach tissues, with optimal IHC staining using TE buffer pH 9.0 .
Functional studies highlight its role in modulating TLR3 signaling, enhancing interferon responses during viral challenges .
CLDN18.2 is a tight junction protein overexpressed in gastric, pancreatic, and esophageal cancers, making it a therapeutic target.
Givastomig/ABL111 activates 4-1BB signaling only in CLDN18.2+ tumors, avoiding systemic toxicity .
Zolbetuximab improves survival in CLDN18.2+ gastric cancer (SPOTLIGHT/GLOW trials: HR 0.75 for PFS) .
CLDN18.2-307-ADC achieves complete tumor regression in pancreatic PDX models via lysosomal toxin delivery .
Q: How should I design an experiment using the CLE18 antibody in flow cytometry, considering the need for multiple color analysis? A: For experiments involving multiple colors, such as using the CLE18 antibody, it's crucial to select fluorochromes that are compatible with your flow cytometer. Ensure that you have appropriate controls, such as single-color compensation tubes for each antibody used. If using highly expressed antigens like CD45, consider using less efficient fluorochromes like Pacific Orange. Isotype controls are essential when measuring activation markers to ensure specificity .
Q: What strategies can I use to resolve contradictory data when using the CLE18 antibody in different experimental setups? A: Contradictory data may arise from variations in antibody lots, experimental conditions, or sample preparation. To resolve this, ensure consistency in reagent sources and experimental conditions. Use FMO (Fluorescence Minus One) tubes to validate staining patterns and consider running isotype controls to assess non-specific binding. Additionally, verify antibody specificity by using different clones or sources if available .
Q: How can I validate the specificity of the CLE18 antibody for my research application? A: Validate the specificity of the CLE18 antibody by using Western blot or immunofluorescence on known positive controls. For flow cytometry, use FMO controls to ensure that the signal is specific to the antigen of interest. If possible, compare results with different antibody clones or sources to confirm consistency .
Q: What are the best practices for optimizing staining protocols when using the CLE18 antibody in immunofluorescence or flow cytometry? A: For optimal staining, ensure proper fixation and permeabilization of cells. Use blocking agents to reduce non-specific binding, and optimize antibody concentrations through titration experiments. In flow cytometry, use appropriate compensation controls to adjust for spectral overlap between fluorochromes .
Q: How can I integrate the CLE18 antibody into advanced research applications, such as studying cellular differentiation or signaling pathways? A: To study cellular differentiation or signaling pathways, combine the CLE18 antibody with other markers specific to your pathway of interest. Use techniques like co-staining with other antibodies or integrating with biochemical assays to elucidate the role of CLE18 in these processes. Consider using live cell imaging or single-cell analysis for more detailed insights .
Q: What are common issues encountered when using the CLE18 antibody, and how can they be addressed? A: Common issues include non-specific binding, low signal intensity, or inconsistent results. Address these by optimizing antibody concentrations, using appropriate blocking agents, ensuring proper sample preparation, and verifying antibody specificity through controls like isotype or FMO tubes .
Q: How can I determine if the CLE18 antibody is suitable for my species of interest, and what are the implications of cross-reactivity? A: Determine species specificity by consulting the manufacturer's data or performing cross-reactivity tests. Cross-reactivity can complicate data interpretation, so ensure that the antibody is validated for your species. If cross-reactivity is a concern, consider using species-specific antibodies or alternative detection methods .
Q: How can I integrate the use of the CLE18 antibody with other research techniques, such as Western blot or immunoprecipitation? A: Integrate the CLE18 antibody with techniques like Western blot by using it for immunoprecipitation followed by Western blot analysis. For immunoprecipitation, ensure that the antibody is conjugated to a suitable resin or bead. This can help in studying protein interactions or expression levels in more detail .
Q: What advanced flow cytometry techniques can be used with the CLE18 antibody to enhance data resolution? A: Techniques like high-dimensional flow cytometry (using 9 or more colors) can be employed to analyze complex cell populations. Use instruments like the LSRII or FACSAria for such experiments. Ensure proper compensation and use FMO controls to validate staining patterns .
Q: What are potential future directions for research involving the CLE18 antibody, particularly in understanding its role in cellular processes? A: Future research could focus on elucidating the role of CLE18 in developmental biology, particularly in plant systems, by studying its expression patterns and interactions with other signaling molecules. Techniques like live cell imaging and single-cell RNA sequencing could provide deeper insights into its function .
| Experiment | Antibody Used | Fluorochrome | Control Used |
|---|---|---|---|
| Flow Cytometry | CLE18 Antibody | FITC | Isotype Control |
| Immunofluorescence | CLE18 Antibody | DyLight 488 | FMO Control |
Western Blot Analysis: The CLE18 antibody can be used to detect specific bands corresponding to the protein of interest, ensuring specificity and sensitivity in Western blot assays .
Flow Cytometry: Use of the CLE18 antibody in flow cytometry allows for the identification and characterization of cell populations expressing CLE18, enabling detailed analysis of cellular heterogeneity .
Immunofluorescence: This technique provides spatial information on CLE18 expression within cells, useful for studying cellular localization and interactions .