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- Table of Contents
Plan chromogenic MYCBP IHC in paraffin sections using the catalog antibody's IHC protocol (datasheet A06216-2). Compare staining with HPA tissue benchmarks, including high staining in adrenal glandular cells and no detection in adipocytes, while accounting for the antibody specificity caveat (HPA tissue IHC).
Expected localisation, validated protocols, controls and antibodies — the at-a-glance facts below, then the full design guide.
| Expected localisation | General cytoplasmic tissue staining (HPA tissue IHC) | |
| Staining pattern | Cytoplasmic staining in glandular cells (HPA tissue IHC) | |
| Antigen retrieval | EDTA pH 8.0 HIER, heat-mediated (datasheet A06216-2) | |
| Positive control | Adrenal gland+4 more · see all | |
| Negative control | Adipose tissue+2 more · see all |
| Fixation | Keep fixation conditions consistent across sections. (standard IHC practice; not target-specific) | |
| Caveat | Antibody may detect proteins from more than one gene (HPA tissue IHC) | |
| Regulation | MYC rise in S phase drives nuclear entry (UniProt) | |
| Isoform / epitope | No annotated isoforms; mature chain spans residues 2–103 (UniProt) |
Compare the catalog antibody’s IHC-P protocol (datasheet A06216-2) with published MYCBP staining protocols for human HCC (PMC6778622) and osteosarcoma paraffin sections (PMC10988859).
| Sample | Paraffin-embedded human adrenal adenomas tissue; fixative not specified (datasheet A06216-2) |
| Fixation | Image fixative and duration unreported (datasheet A06216-2); 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 A06216-2); 20 min, 95–100 °C (standard) |
| Peroxidase block | 3% H2O2, 10 min, room temperature (standard) |
| Blocking | 10% goat serum (datasheet A06216-2) |
| Primary antibody | Rabbit anti-MYCBP, 2-5 μg/ml (datasheet A06216-2) |
| Primary incubation | Overnight at 4 °C (datasheet A06216-2) |
| Detection | HRP-conjugated secondary, DAB chromogen (datasheet A06216-2) |
| Counterstain | Hematoxylin, blue, dehydrate and mount (standard) |
| Expected result | MYCBP-positive staining in glandular cells of adrenal gland (HPA tissue IHC: High). HPA tissue profile: General cytoplasmic expression. No signal in the no-primary control. |
In paraffin IHC, expect mainly cytoplasmic MYCBP staining in glandular or epithelial cells, including adrenal glandular and bronchial respiratory epithelial cells (HPA: general cytoplasmic expression; High in both). Nuclear and mitochondrial localisation is biologically plausible (UniProt Q99417: cytoplasm, nucleus, mitochondrion; no transmembrane segment). Interpret staining cautiously: HPA rates tissue IHC as Supported, reports medium agreement with RNA, and warns that the assessed staining may include proteins from more than one gene (HPA: tissue IHC reliability).
| Cytoplasmic staining in adrenal glandular or bronchial respiratory epithelial cells (HPA: High in both). | This matches the reported paraffin tissue pattern (HPA: general cytoplasmic expression). Compare cells within the same section and a matched control before judging intensity; processing and detection can alter apparent strength (general IHC practice). |
| Predominantly membrane, luminal, or extracellular staining, without the expected cytoplasmic pattern (HPA: general cytoplasmic expression). | Treat this as suspect localisation: MYCBP has no transmembrane segment (UniProt Q99417: topology). Check morphology and controls for nonspecific signal (general IHC practice). Nuclear staining alone needs context because MYCBP can enter the nucleus in S phase (UniProt Q99417: subcellular note). |
| Strong signal in adipocytes or cardiomyocytes, where HPA reports no detection (HPA: adipocytes and cardiomyocytes, Not detected). | Cross-reactivity or endogenous detection activity is possible (general IHC practice). These cells are comparison controls, not absolute exclusions: UniProt reports high heart expression, while HPA reports no cardiomyocyte staining (UniProt Q99417: tissue specificity; HPA: heart muscle). |
| Diffuse colour across cells and tissue spaces, with little cellular definition (general IHC practice). | This is compatible with background from detection reagents, inadequate blocking, or excessive primary antibody (general IHC practice). It does not establish MYCBP localisation; compare a no-primary control and a known positive section (general IHC practice). |
| No signal in adrenal glandular or bronchial respiratory epithelial cells (HPA: High in both). | First investigate a technical failure or sample-specific loss of signal (general IHC practice). HPA's Supported rating and multi-gene warning limit what one negative slide proves about MYCBP itself (HPA: tissue IHC reliability). |
| Which paraffin tissue gives a useful positive comparison? | Adrenal glandular, appendix glandular, colon glandular, and bronchial respiratory epithelial cells are reported High (HPA: tissue IHC). Use their cell-specific pattern as a comparison; the HPA rating is Supported and carries a multi-gene caution (HPA: tissue IHC reliability). |
| How should heart and skeletal muscle be interpreted? | UniProt reports high expression in both tissues, but HPA reports cardiomyocytes Not detected and skeletal myocytes Low by IHC (UniProt Q99417: tissue specificity; HPA: tissue IHC). Do not use either as the sole slide-level positive benchmark. |
| Does nuclear or mitochondrial staining fit MYCBP biology? | Yes: UniProt lists nucleus and mitochondrion, with nuclear entry in S phase and mitochondrial association with AKAP1 (UniProt Q99417: subcellular notes). HPA tissue IHC nevertheless describes a general cytoplasmic pattern (HPA: tissue IHC profile). Judge focal organelle-like signal against controls. |
| How strong is the antibody-based localisation evidence? | The reported tissue IHC antibody is Supported, while a separate ICC antibody is Supported (HPA: HPA041188 IHC; HPA078331 ICC). These statuses do not prove that every signal comes from MYCBP; HPA warns that the assessed staining may include proteins from more than one gene (HPA: tissue IHC and subcellular cautions). |
| What should an IF/ICC image show? | HPA describes mainly nucleoplasmic signal with additional mitochondrial localisation and lists PC-3, Rh30, and U2OS images (HPA: subcellular ICC-IF). That IF/ICC observation belongs to a different assay context; the paraffin IHC comparison remains HPA's general cytoplasmic tissue pattern (HPA: tissue IHC profile). |
| Situation | Likely cause | Next action |
|---|---|---|
| Known positive glandular or respiratory epithelial cells remain blank (HPA: High in adrenal glandular and bronchial epithelial cells). | The run may have failed, or the section may have lost detectable signal (general IHC practice). HPA's Supported pattern does not guarantee signal in every specimen (HPA: tissue IHC reliability). | Check section integrity, retrieval, primary antibody application, detection reagents, and a concurrently stained positive section (general IHC practice). Record the conditions before changing more than one variable. |
| Most tissue compartments show uniform colour with poor cell boundaries (general IHC practice). | Background from reagent binding or detection chemistry may dominate the specific cellular pattern (general IHC practice). | Compare no-primary and positive controls; review blocking, washing, primary antibody concentration, and chromogen development (general IHC practice). Reassess whether cytoplasm in the expected cells remains distinguishable (HPA: general cytoplasmic expression). |
| Membranes or gland lumens stain more strongly than cell cytoplasm (HPA: general cytoplasmic expression). | Nonspecific deposition or trapped detection reagent is possible (general IHC practice); MYCBP has no transmembrane segment (UniProt Q99417: topology). | Inspect adjacent morphology and the no-primary control; adjust washing or detection conditions if those controls show matching colour (general IHC practice). Do not score isolated luminal colour as MYCBP positivity. |
| Adipocytes or splenic red-pulp cells appear strongly positive (HPA: Not detected in these cells). | Cross-reactivity or endogenous detection activity is possible (general IHC practice). HPA also cautions that the assessed staining may involve proteins from more than one gene (HPA: tissue IHC reliability). | Review a no-primary control and the staining distribution; use cell-specific positive tissue on the same run (general IHC practice; HPA: High in adrenal glandular cells). Report the discrepancy instead of assigning it to MYCBP alone. |
| Brown deposits persist in the no-primary control (general IHC practice). | Endogenous peroxidase activity or nonspecific detection chemistry can create chromogenic signal without primary antibody (general IHC practice). | Review the detection system and its endogenous activity block; repeat the control alongside the test section after correcting the workflow (general IHC practice). Do not count control-matched deposits as target staining. |
| A nuclear signal conflicts with an otherwise weak cytoplasmic IHC result (HPA: general cytoplasmic expression). | Nuclear MYCBP is plausible during S phase, but background or antibody cross-reactivity also needs consideration (UniProt Q99417: subcellular note; HPA: multi-gene caution). | Check whether the nuclear signal follows cell boundaries and disappears in a no-primary control (general IHC practice). Describe nuclear and cytoplasmic findings separately; compare with HPA's tissue IHC and ICC-IF patterns (HPA: tissue IHC; subcellular ICC-IF). |
Comprehensive Human Protein Atlas IHC scoring per tissue (reliability: Supported — Medium consistency between antibody staining and RNA expression data. Caution, targets protein from more than one gene.). 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 |
|---|---|---|---|---|
| Adrenal gland | Glandular cells | High | Protein (IHC) | HPA → |
| Appendix | Glandular cells | High | Protein (IHC) | HPA → |
| Bronchus | Respiratory epithelial cells | High | Protein (IHC) | HPA → |
| Colon | Glandular cells | High | Protein (IHC) | HPA → |
| Duodenum | Glandular cells | High | Protein (IHC) | HPA → |
Troubleshoot MYCBP staining in paraffin sections by tracking retrieval, cell type, compartment, and antibody specificity alongside each control.
The IHC-validated anti-MYCBP antibody has real images from human paraffin sections (catalog IHC captions). Human, mouse and rat reactivity is listed, but no IF/ICC data is supplied (catalog).
A06216-2 has IHC images from human adrenal adenoma, bladder urothelial carcinoma, placenta and testicular germ cell tumor paraffin sections (catalog IHC captions). Its listed applications include IHC and its listed reactivity covers human, mouse and rat; the payload supplies no IF/ICC image (catalog).
Which to pick: Choose A06216-2 for human paraffin-section IHC: its caption documents EDTA retrieval at pH 8.0 and 2 μg/ml primary antibody, while the fixative is unreported (A06216-2 IHC caption). No listed SKU has IF/ICC validation, so there is no supported IF/ICC pick here (catalog applications; IF image list). A06216-2 lists mouse and rat reactivity, but its IHC images and stated IHC dilution cover human samples only; clone information is unreported (catalog).