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- Table of Contents
Plan BIN1 staining in paraffin sections using cytoplasmic CNS and skeletal muscle patterns as reference points (HPA tissue IHC). Compare staining with matched controls, and interpret unexpected signal cautiously because presumed off-target binding has been observed (HPA tissue IHC).
Expected localisation, validated protocols, controls and antibodies — the at-a-glance facts below, then the full design guide.
| Expected localisation | Predominantly cytoplasmic in CNS and skeletal muscle (HPA tissue IHC) | |
| Staining pattern | Cytoplasmic CNS glia and myocytes; granular cerebellar cells (HPA tissue IHC) | |
| Antigen retrieval | EDTA pH 8.0 HIER, heat-mediated (datasheet A01551-1) | |
| Positive control | Caudate+4 more · see all | |
| Negative control | Esophagus+2 more · see all |
| Fixation | Matched tissue-IHC evidence does not establish the fixation claim. Validate the specimen-specific method before use. (selected-SKU IHC image A01551-1) | |
| Caveat | Presumed off-target binding may complicate scoring (HPA tissue IHC) | |
| Regulation | Highest expression in brain and muscle (UniProt) | |
| Isoform / epitope | 11 isoforms; epitope coverage needs checking (UniProt) |
The catalog antibody protocol uses EDTA pH 8.0 retrieval (datasheet A01551-1); one published BIN1 IHC protocol uses FFPE HCC tissue (PMC10495885).
| Sample | Paraffin-embedded human appendiceal adenocarcinoma tissue; fixative not specified (datasheet A01551-1) |
| Fixation | Image fixative and duration unreported (datasheet A01551-1); verify before use. |
| Sectioning | 4–5 µm sections on charged slides (standard) |
| Deparaffinisation | Xylene, graded ethanol series to water (standard) |
| Antigen retrieval | Heat retrieval: EDTA pH 8.0 (datasheet A01551-1); 20 min, 95–100 °C (standard) |
| Peroxidase block | 3% H2O2, 10 min, room temperature (standard) |
| Blocking | 10% goat serum (datasheet A01551-1) |
| Primary antibody | Rabbit anti-BIN1, 2-5 μg/ml (datasheet A01551-1) |
| Primary incubation | Overnight at 4 °C (datasheet A01551-1) |
| Detection | Streptavidin-biotin complex (SABC), DAB chromogen (datasheet A01551-1) |
| Counterstain | Hematoxylin, blue, dehydrate and mount (standard) |
| Expected result | BIN1-positive staining in glial cells of caudate (HPA tissue IHC: High). HPA tissue profile: High cytoplasmic expression in CNS and skeletal muscle. No signal in the no-primary control. |
BIN1 staining should be predominantly cytoplasmic in CNS cells and skeletal myocytes (HPA tissue IHC: high cytoplasmic expression in CNS and skeletal muscle). Cytoplasmic or membrane-associated signal is consistent with BIN1 localisation; UniProt also lists the nucleus, endosomes, sarcolemma and T-tubules, and reports no transmembrane segment (UniProt O00499). Interpret tissue staining with HPA’s Enhanced IHC reliability in mind: RNA agreement is medium, and presumed off-target staining was disregarded (HPA tissue IHC).
| Strong cytoplasmic staining in skeletal myocytes or CNS glial cells; cerebellar granular cells show cytoplasmic or membrane staining (HPA tissue IHC: High). | This matches documented positive cells and compartments (HPA tissue IHC). Compare intensity within the identified cell population; a dark area containing several cell types does not establish which cells express BIN1 (general IHC practice). |
| Predominantly nuclear-only staining, with little cytoplasmic signal, in a known-positive section (HPA tissue IHC: high cytoplasmic profile). | Treat this as a compartment mismatch requiring review, not automatic proof of artefact: UniProt lists nuclear BIN1 (UniProt O00499). Check whether cytoplasmic signal is present in the expected cells and compare with a validated reference section (general IHC practice). |
| Prominent staining in esophageal, oral mucosal or vaginal squamous epithelial cells (HPA tissue IHC: Not detected in these cells). | This conflicts with the supplied IHC reference pattern and warrants a specificity check; cross-reactivity or endogenous detection activity are possible explanations, not established causes (HPA tissue IHC; general IHC practice). Reassess the cell identity before scoring (general IHC practice). |
| Color spread across cells, stroma or the whole section without a discernible cell pattern (general IHC practice). | Diffuse background cannot be scored as BIN1 localisation (general IHC practice). Check a no-primary control, blocking, washes and detection conditions; HPA reports presumed off-target staining was disregarded in its tissue assessment (HPA tissue IHC). |
| No signal in skeletal myocytes or documented positive CNS cells (HPA tissue IHC: High). | A negative result there is discordant with the HPA reference, but does not by itself identify a failed step (HPA tissue IHC; general IHC practice). Confirm the cells sampled, then review the antibody’s IHC validation and detection controls (general IHC practice). |
| Tissue and cell selection (HPA tissue IHC). | HPA reports High staining in skeletal myocytes, CNS glial cells and cerebellar granular cells, but Low staining in cardiomyocytes (HPA tissue IHC). Select and score the named cells; a weak heart-muscle result is less informative than a weak skeletal-muscle result (HPA tissue IHC; general IHC practice). |
| Isoform distribution (UniProt O00499). | UniProt lists 11 BIN1 isoforms and reports brain-restricted isoform IIA, while isoform BIN1 is widely expressed with highest expression in skeletal muscle (UniProt O00499). An antibody’s isoform coverage cannot be inferred from tissue staining alone; check its stated epitope before interpreting differences (general IHC practice). |
| Location and membrane association (UniProt O00499; HPA tissue IHC). | UniProt lists cytoplasm, endosome, sarcolemma and T-tubules without a transmembrane segment; HPA describes a high cytoplasmic tissue profile (UniProt O00499; HPA tissue IHC). Score visible cell-associated staining by compartment rather than assuming every membrane-shaped feature is specific (general IHC practice). |
| IHC validation and its limit (HPA antibodies; HPA tissue IHC). | HPA marks HPA003894, HPA005437 and CAB001945 Enhanced for IHC, meaning the pattern is reproduced by independent antibodies or orthogonal data (HPA antibodies). HPA still reports medium RNA consistency and disregarded presumed off-target binding; examine unexpected staining locally (HPA tissue IHC). |
| IF/ICC: what localisation is supported? (HPA subcellular). | Cytosol is the supported main location in HPA ICC-IF (HPA subcellular). That observation helps interpret an IF image, but it does not turn the tissue IHC pattern into an IF/ICC protocol or establish that every cell line stains identically (HPA subcellular; general IHC/IF practice). |
| Situation | Likely cause | Next action |
|---|---|---|
| Skeletal muscle lacks detectable myocyte staining (HPA tissue IHC: High). | The expected positive cells may be absent from the viewed area, or the staining workflow may have failed; the image alone cannot distinguish these possibilities (HPA tissue IHC; general IHC practice). | Confirm myocytes on the counterstained section, inspect a positive control, and check the catalog antibody’s IHC-P instructions and detection steps (general IHC practice). |
| CNS staining appears confined to an unexpected cell population (HPA tissue IHC: high cytoplasmic CNS profile). | Cell identification may be uncertain, or the signal may differ from HPA’s reported glial and cerebellar granular-cell patterns (HPA tissue IHC; general IHC practice). | Identify cells using morphology and anatomical context; compare the same cell type and compartment with HPA’s tissue reference before assigning positivity (HPA tissue IHC; general IHC practice). |
| Squamous epithelium stains strongly in an esophagus, oral mucosa or vagina section (HPA tissue IHC: Not detected). | Unexpected antibody binding or endogenous detection activity is possible; HPA’s presumed off-target staining caveat supports caution, not a diagnosis of the cause (HPA tissue IHC; general IHC practice). | Run a no-primary control, review blocking and detection, and compare a documented positive cell population before scoring epithelial signal as BIN1 (general IHC practice; HPA tissue IHC). |
| The entire section has diffuse chromogen signal (general IHC practice). | Background from blocking, washing or detection can obscure cellular localisation; diffuse color alone cannot establish BIN1 expression (general IHC practice). | Compare with a no-primary control, inspect wash and detection conditions, then reassess whether signal resolves into the expected cells and compartments (general IHC practice; HPA tissue IHC). |
| Staining is chiefly nuclear with little cytoplasmic signal (HPA tissue IHC: high cytoplasmic profile). | The pattern differs from HPA’s dominant tissue pattern, although nuclear localisation is listed by UniProt; its appearance alone cannot prove an artefact (HPA tissue IHC; UniProt O00499). | Review cell identity, the cytoplasmic positive control and antibody validation; record the nuclear signal separately until its specificity is supported (general IHC practice; HPA antibodies). |
| Heart muscle stains more weakly than skeletal muscle (HPA tissue IHC: Low in cardiomyocytes; High in skeletal myocytes). | This contrast is consistent with HPA’s cell-specific levels and does not alone indicate a technical failure (HPA tissue IHC). | Use the expected level for each named cell population when judging the result; investigate workflow failure if the documented High skeletal-myocyte control is also absent (HPA tissue IHC; general IHC practice). |
Comprehensive Human Protein Atlas IHC scoring per tissue (reliability: Enhanced — Medium consistency between antibody staining and RNA expression data. Presumed off target binding observed and disregarded.). Rows are taken directly from the HPA tissue chart — click any row's HPA link to view the source.
| Tissue | Cell type | Level | Evidence | Source |
|---|---|---|---|---|
| Caudate | Glial cells | High | Protein (IHC) | HPA → |
| Cerebellum | Granular cells - cytoplasm/membrane | High | Protein (IHC) | HPA → |
| Cerebral cortex | Glial cells | High | Protein (IHC) | HPA → |
| Hippocampus | Glial cells | High | Protein (IHC) | HPA → |
| Lung | Alveolar cells type I | High | Protein (IHC) | HPA → |
Troubleshoot BIN1 staining in paraffin sections by checking retrieval, compartment, cell identity, and antibody controls before comparing staining intensity.
The catalog lists anti-BIN1 antibodies for human, mouse and rat samples (catalog: reactivity); A01551-1 has IHC images of human paraffin sections and an IF image of Caco-2 cells (catalog: image captions).
A01551-1 has IHC images of human appendiceal adenocarcinoma, gastric adenocarcinoma, lung cancer and brain paraffin sections, plus an IF image of Caco-2 cells (catalog: A01551-1 image captions). M01551-3 lists IHC and IF/ICC for human and mouse, while M01551-4 lists those applications for human; neither has an IHC or IF image in the payload (catalog: M01551-3 and M01551-4 applications, reactivity and image captions).
Which to pick: For tissue IHC, choose A01551-1 when an illustrated paraffin-section workflow matters: its human IHC captions report EDTA retrieval at pH 8.0 and 2 μg/ml primary antibody, but do not report the fixative (catalog: A01551-1 IHC image captions). For IF/ICC, A01551-1 has a Caco-2 image at 5 μg/ml; rabbit monoclonals M01551-3 and M01551-4 also list IF/ICC at 1:50–1:200, without images in the payload (catalog: IF image caption, clones, applications and dilutions). For work across species, A01551-1 lists human, mouse and rat reactivity; M01551-3 lists human and mouse, and M01551-4 lists human only (catalog: reactivity).