The term "RDL6" does not correspond to any validated protein, receptor, or antigen in major biomedical databases (e.g., UniProt, NCBI Gene). Potential sources of confusion include:
RDL (Resistance to Dieldrin): A GABA<sub>A</sub> receptor subunit in insects, studied in honeybee neurobiology . Antibodies targeting RDL have been developed for research in insect models but are unrelated to "RDL6" .
LRP6 (Low-Density Lipoprotein Receptor-Related Protein 6): A Wnt signaling coreceptor with therapeutic antibodies under investigation for cancer and metabolic diseases . This is distinct from "RDL6."
| Target | Application | Species | Key Findings |
|---|---|---|---|
| RDL (GABA receptor) | Neuroscience research in Apis mellifera | Honeybee | CRISPR-Cas9 validated antibodies localize RDL in bee brain sections . |
Typographical Error: "RDL6" may be a misspelling of RDL (insect GABA receptor) or LRP6 (Wnt coreceptor).
Obscure or Emerging Target: If "RDL6" refers to a novel or uncharacterized antigen, no peer-reviewed studies are currently available.
Proprietary or Unpublished Data: The term might relate to internal project names in undisclosed industry research.
Verify the intended target (e.g., RDL, LRP6, or other receptors).
Explore databases like ClinicalTrials.gov or antibody registries (e.g., Antibody Society) for emerging candidates.
Consult structural databases (e.g., PDB) for protein homologs or paralogs.
Perform knockout/knockdown controls using CRISPR or siRNA targeting the RDL6 gene. Compare protein expression between wild-type and modified cell lysates .
Use secondary antibody-only controls to rule out nonspecific binding.
Validate with independent antibodies targeting distinct RDL6 epitopes for cross-verification .
| Parameter | Ideal Outcome | Common Pitfalls |
|---|---|---|
| Band specificity | Single band at expected molecular weight | Multiple bands (proteolysis/degradation) |
| Signal-to-noise ratio | ≥5:1 in target samples | High background in controls |
Fixation time: Overfixation (>24 hr in formalin) masks epitopes, while underfixation (<6 hr) causes poor morphology .
Antigen retrieval: Optimize pH (6.0 vs. 9.0) and heat-mediated methods (pressure cooker vs. microwave).
Blocking buffers: Compare protein-based (BSA) vs. serum-based blockers for tissue-specific background reduction.
Use multiplex fluorescence IHC with spectral unmixing to confirm colocalization patterns.
Quantify staining intensity using H-score systems to avoid subjective interpretation .
Epitope accessibility: Confirm whether the antibody recognizes linear (denatured) vs. conformational epitopes.
Sample preparation: Compare lysate buffers (RIPA vs. NP-40) for ELISA and cell viability dyes for flow cytometry.
Cross-reactivity screening: Use recombinant protein arrays to identify off-target interactions .
Report batch-specific validation data (≥3 biological replicates)
Document precise dilution factors (e.g., 1:500 ± 10%) rather than qualitative descriptions
| Parameter | Inter-lab Protocol |
|---|---|
| Cell lysate quantity | 20μg/lane ± 2μg (BCA-validated) |
| Incubation time | 1hr RT ± 5min (temperature-controlled) |
Multi-target validation:
Use CRISPRi/a systems with dose-dependent repression/activation
Combine with proteomics profiling to detect off-target effects
Time-course analysis:
Monitor protein turnover rates (pulse-chase) vs. antibody detection limits
Structural prediction: Use AlphaFold2 models to map antibody-epitope interactions
Transcriptome correlation: Compare protein/mRNA levels across 10+ cell types
Public data mining: Curate expression patterns from >5 independent studies
| Tool | Application | Validation Weight |
|---|---|---|
| CPTAC Assay Portal | Mass-spec cross-validation | 35% |
| Human Protein Atlas | Tissue-specific expression patterns | 25% |
| COSMIC Database | Mutation-associated expression shifts | 40% |