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MAGED4 / Melanoma-associated antigen D4 · IHC design guide
Design Immunohistochemistry for MAGED4
Plan chromogenic IHC for MAGED4 in paraffin sections with the catalog antibody at 2–5 μg/ml (datasheet A16674-1). Evaluate cytoplasmic staining in selected tissues while accounting for reported off-target binding (HPA tissue IHC).
Evidence assembled Oct 2026 · For research use; verify linked source records and product datasheet before use
MAGED4 Immunohistochemistry Experimental Design Guide
Expected localisation, validated protocols, controls and antibodies — the at-a-glance facts below, then the full design guide.
Must know before staining
| Expected localisation | Cytoplasmic in selected tissues (HPA tissue IHC) | |
| Staining pattern | Cytoplasmic staining in selected glandular and stromal cells (HPA tissue IHC) | |
| Antigen retrieval | EDTA pH 8.0 HIER, heat-mediated (datasheet A16674-1) | |
| Positive control | Adrenal gland+3 more · see all | |
| Negative control | Adipose tissue+4 more · see all |
Important caveats
Reasons your staining may differ from the expected pattern.
| Fixation | Keep fixation consistent across sections. (standard IHC practice; not target-specific) | |
| Caveat | Off-target staining reported; antibody targets >1 gene (HPA tissue IHC) | |
| Regulation | Isoforms 1–2 occur in glioma cells (UniProt) | |
| Isoform / epitope | 4 isoforms; check epitope coverage across variants (UniProt) |
Section 1
Recommended MAGED4 IHC & IF Protocols
Compare the catalog antibody’s IHC-P protocol using EDTA pH 8.0 retrieval (datasheet A16674-1) with the published oral squamous cell carcinoma protocol (PMC12732915).
| Sample | Paraffin-embedded human adrenocortical adenoma tissue; fixative not specified (datasheet A16674-1) |
| Fixation | Image fixative and duration unreported (datasheet A16674-1); 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 A16674-1); 20 min, 95–100 °C (standard) |
| Peroxidase block | 3% H2O2, 10 min, room temperature (standard) |
| Blocking | 10% goat serum (datasheet A16674-1) |
| Primary antibody | Rabbit anti-MAGED4, 2-5 μg/ml (datasheet A16674-1) |
| Primary incubation | Overnight at 4 °C (datasheet A16674-1) |
| Detection | HRP-conjugated secondary, DAB chromogen (datasheet A16674-1) |
| Counterstain | Hematoxylin, blue, dehydrate and mount (standard) |
| Expected result | MAGED4-positive staining in glandular cells of adrenal gland (HPA tissue IHC: Medium). HPA tissue profile: Cytoplasmic expression in selected tissues. No signal in the no-primary control. |
💡Decision noteStart with EDTA pH 8.0 heat retrieval for the catalog antibody (datasheet A16674-1); test citrate pH 6.0 when adapting the published protocol (PMC12732915).
Section 2
What Is the Expected MAGED4 Staining Pattern?
In paraffin-section IHC, expect cytoplasmic MAGED4 staining in selected cells: adrenal glandular cells, breast adipocytes, endometrial stromal cells and placental trophoblastic cells show medium staining (HPA tissue IHC). HPA rates the tissue pattern Approved, with medium consistency against RNA data and a warning about presumed off-target binding (HPA tissue IHC). UniProt assigns no subcellular location and reports no transmembrane segment (UniProt Q96JG8).
| Distinct cytoplasmic stain in the listed cell populations, with limited surrounding stain. | This matches HPA's selected-tissue cytoplasmic pattern. The reported level is Medium in each listed positive population; compare cells within the same section before judging intensity (HPA tissue IHC). |
| Predominantly nuclear or sharply membrane-restricted stain in an otherwise interpretable IHC section. | Neither is the reported tissue-IHC pattern (HPA tissue IHC). Check morphology, counterstain and detection controls before calling it MAGED4. HPA's separate ICC-IF summary says Membrane, but supplies no cell-line images or ICC validation for HPA003554 (HPA subcellular; HPA antibodies). |
| Strong stain in colon or appendix glandular cells, bronchial respiratory epithelium, or bone-marrow hematopoietic cells. | These populations were Not detected in the HPA tissue set (HPA tissue IHC). Investigate antibody cross-reactivity or endogenous chromogenic activity; unexpected staining alone cannot establish expression, especially given HPA's off-target warning (HPA tissue IHC). |
| Uniform color across tissue, stroma and empty areas, obscuring cell boundaries. | This is background rather than a readable cell-specific pattern (general IHC practice). Review blocking, washes, primary-antibody concentration and chromogen exposure; use a no-primary control to distinguish detection background from primary-dependent staining (general IHC practice). |
| No stain in a section selected as a positive control. | First confirm that the section contains the HPA-positive cell population, since positivity is cell-specific (HPA tissue IHC). If it does, inspect tissue preservation and the staining run with independent controls before interpreting a test section as negative (general IHC practice). |
💡Expected MAGED4 appearanceCall a convincing positive medium cytoplasmic signal in HPA-listed cells; diffuse, predominantly nuclear, or unexpected-cell staining needs control review before scoring (HPA tissue IHC; general IHC practice).
| Tissue and cell context | HPA reports Medium stain in breast adipocytes but Not detected in adipose-tissue adipocytes; identify the sampled tissue before using adipocytes as controls (HPA tissue IHC). |
| Evidence strength and specificity | IHC is Approved, with medium RNA agreement; HPA also cautions that the target spans more than one gene and presumed off-target binding was disregarded in its profile (HPA tissue IHC). |
| IHC versus IF/ICC: what should be expected? | Use the cytoplasmic tissue-IHC pattern for this assay. HPA's ICC-IF summary says Membrane, yet lists no cell-line images; HPA003554 has IHC Approved and no ICC status (HPA tissue IHC; HPA subcellular; HPA antibodies). |
| Isoforms and protein architecture | UniProt lists four isoforms, one chain spanning residues 1–741, and no signal peptide, propeptide or transmembrane segment. These facts do not identify the antibody epitope or prove equal detection of all isoforms (UniProt Q96JG8). |
| Antigen retrieval | Retrieval is a routine paraffin-IHC variable, but target-specific fixation sensitivity and an optimal retrieval condition are unreported here; assess retrieval changes against tissue and detection controls (general IHC practice). |
| Situation | Likely cause | Next action |
|---|---|---|
| Positive-control slide is blank. | The chosen area may lack the reported positive cell type, or the staining run may have failed (HPA tissue IHC; general IHC practice). | Confirm the cell population in the section; then review a working assay control and detection reagents before changing target interpretation (general IHC practice). |
| Signal appears mainly nuclear. | This conflicts with HPA's cytoplasmic tissue-IHC profile; nonspecific binding or difficult-to-read counterstain is possible (HPA tissue IHC; general IHC practice). | Check morphology and a no-primary control; repeat with adjusted detection conditions if background obscures the cytoplasm (general IHC practice). |
| Unexpected cell types stain strongly. | Cross-reactivity is plausible because HPA notes presumed off-target binding and a target spanning more than one gene (HPA tissue IHC). | Compare the exact cell type with HPA positives and negatives, then seek independent antibody or orthogonal support before assigning MAGED4 expression (HPA tissue IHC; general IHC practice). |
| Color is widespread or follows tissue edges. | Background or excessive chromogen development can obscure cell-restricted staining (general IHC practice). | Inspect no-primary and detection controls; refine blocking, washes, primary concentration or development time one variable at a time (general IHC practice). |
| Brain-region section is negative despite expected brain expression. | RNA or broad tissue statements do not ensure detectable protein in every cell: HPA records Not detected in caudate glia and cerebellar granular-layer cells (HPA tissue IHC; UniProt Q96JG8). | Score the sampled cell population against its own HPA entry; use an HPA Medium-positive population to check the run (HPA tissue IHC). |
| An IF/ICC result looks membrane-localized. | HPA labels its ICC-IF summary Membrane, but supplies no cell-line images and no ICC validation for HPA003554 (HPA subcellular; HPA antibodies). | Interpret that result with the separate IF/ICC guide and appropriate controls; do not substitute its localization for the tissue-IHC scoring pattern (HPA tissue IHC; general IF practice). |
Experiment evidence
IHC & IF images showing MAGED4 staining
A16674-1 · IHCIHC analysis of MAGED4 using anti-MAGED4 antibody (A16674-1). MAGED4 was detected in a paraffin-embedded section of human adrenocortical ade
A16674-1 · IHCIHC analysis of MAGED4 using anti-MAGED4 antibody (A16674-1). MAGED4 was detected in a paraffin-embedded section of human bladder urothelial
A16674-1 · IFIF analysis of MAGED4 using anti-MAGED4 antibody (A16674-1). MAGED4 was detected in an immunocytochemical section of A549 cells. Enzyme anti
HPA · Cerebral cortexHuman Protein Atlas IHC, Cerebral cortex. Source: https://www.proteinatlas.org/ENSG00000187243-MAGED4/tissue/cerebral+cortex#imid_1379108
HPA · ColonHuman Protein Atlas IHC, Colon. Source: https://www.proteinatlas.org/ENSG00000187243-MAGED4/tissue/colon#imid_1379042
HPA · LiverHuman Protein Atlas IHC, Liver. Source: https://www.proteinatlas.org/ENSG00000187243-MAGED4/tissue/liver#imid_1379035
HPA · KidneyHuman Protein Atlas IHC, Kidney. Source: https://www.proteinatlas.org/ENSG00000187243-MAGED4/tissue/kidney#imid_1379044
← swipe / scroll for more images →
Real IHC / IF data behind the staining-pattern expectations in this section.
Sample controls for MAGED4 IHC & IF
🧪Run adrenal gland first; its glandular cells should stain (HPA: Medium in adrenal gland glandular cells). Use appendix glandular cells as the negative tissue (HPA: Not detected in appendix glandular cells), and expect cells outside the stained glandular population on the positive slide to show only background signal (standard IHC control practice).
Positive control tissue: Adrenal gland (Glandular cells, HPA Medium)
Negative control tissue: Adipose tissue (HPA Not detected)
ICC-IF cell lines (HPA subcellular resource): HPA carries no ICC-IF cell line for MAGED4; derive a cell-line control from the positive tissue's cell type (Glandular cells) and confirm it by RNA or western blot first.
Technical controls: Include a no-primary, secondary-only control and a species-matched nonimmune rabbit IgG isotype control (selected-SKU caption: rabbit primary antibody; standard IHC control practice). Compare with a MAGED4 knockout control or, if the immunizing peptide is available, a peptide-blocked primary; check adrenal tissue for endogenous peroxidase signal and pigment that could resemble DAB staining (standard IHC control practice).
⚠️Feasibility: No target-specific fixation window or fixation effect is reported, and the selected-SKU paraffin-section caption does not state a fixative (selected-SKU caption: fixative unreported). The caption uses heat retrieval in EDTA at pH 8.0, providing a starting condition without establishing that retrieval is required (selected-SKU caption: EDTA pH 8.0). The supplied evidence does not establish that frozen sections or IF are easier; inspect adrenal pigment when interpreting chromogenic signal (HPA: Medium in adrenal gland glandular cells; standard IHC practice).
HPA tissue IHC evidence for MAGED4
Comprehensive Human Protein Atlas IHC scoring per tissue (reliability: Approved — Medium consistency between antibody staining and RNA expression data. Caution, targets protein from more than one gene. 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.
Positive expression · recommended positive controls
| Tissue | Cell type | Level | Evidence | Source |
|---|---|---|---|---|
| Adrenal gland | Glandular cells | Medium | Protein (IHC) | HPA → |
| Breast | Adipocytes | Medium | Protein (IHC) | HPA → |
| Endometrium | Cells in endometrial stroma | Medium | Protein (IHC) | HPA → |
| Placenta | Trophoblastic cells | Medium | Protein (IHC) | HPA → |
Undetected expression · recommended negative controls
| Tissue | Cell type | Level | Evidence | Source |
|---|---|---|---|---|
| Adipose tissue | Adipocytes | Not detected | Protein (IHC) | HPA → |
| Appendix | Glandular cells | Not detected | Protein (IHC) | HPA → |
| Bone marrow | Hematopoietic cells | Not detected | Protein (IHC) | HPA → |
| Bronchus | Respiratory epithelial cells | Not detected | Protein (IHC) | HPA → |
| Caudate | Glial cells | Not detected | Protein (IHC) | HPA → |
Section 3
Advanced MAGED4 IHC Tips
Troubleshoot MAGED4 staining in paraffin sections by checking retrieval, cellular distribution, antibody specificity, and scoring against matched controls.
How should I retrieve MAGED4 in paraffin sections when staining is weak?
Start with heat-mediated retrieval in EDTA pH 8.0 for paraffin sections (datasheet A16674-1). The selected tissue image used this retrieval before incubation with 2 μg/mL primary antibody overnight at 4°C (datasheet A16674-1). If staining is weak, check that sections remained covered by retrieval buffer during heating and that the same cooling and washing steps were used across the run. Compare any adjusted retrieval condition with the documented EDTA condition on adjacent sections, keeping antibody concentration and detection constant. Judge improvement by specific cellular staining and preservation of tissue morphology, rather than by stronger DAB alone.
Can fixation explain variable MAGED4 staining across paraffin blocks?
MAGED4-specific fixation sensitivity is unknown because the selected paraffin-section caption does not state a fixative (datasheet A16674-1). Record each block’s fixative, fixation duration, and processing history before comparing staining intensity. Use adjacent sections and identical EDTA pH 8.0 retrieval, primary incubation, and DAB development when assessing a suspected fixation effect (datasheet A16674-1 for retrieval and detection). Examine whether weak areas also show poor morphology or uneven staining of an independent tissue marker. Treat differences between blocks as possible processing effects until a controlled comparison supports a biological explanation; neither the tissue staining profile nor protein sequence establishes a MAGED4-specific fixation effect.
Should MAGED4 staining appear in the cytoplasm or at the membrane?
Assess cytoplasmic staining first because the tissue IHC profile reports cytoplasmic expression in selected tissues (HPA tissue IHC). A separate subcellular summary says “Membrane” but provides no listed ICC/IF image-bearing cell lines, while the protein has no annotated transmembrane segment and UniProt gives no subcellular location (HPA subcellular; UniProt Q96JG8 topology and subcellular record). These observations leave the precise compartment unresolved. Score cytoplasmic and membrane-like staining separately, documenting cell type and whether staining follows intact cell borders. If the result is exclusively membranous, confirm it with an independent epitope or orthogonal expression evidence before calling it MAGED4-specific.
Could MAGED4 isoforms or epitope exposure account for discordant staining?
MAGED4 has 4 reported isoforms, and its annotated MAGE domain spans residues 413–611 (UniProt Q96JG8 isoforms and domains). The supplied caption does not map the A16674-1 epitope or establish which isoforms its tissue staining detects (datasheet A16674-1). Request the immunogen region and compare it with each isoform sequence before interpreting a negative section as absence of all MAGED4 forms. For discordant staining, compare adjacent sections under the documented EDTA pH 8.0 retrieval condition, then test an independently validated epitope if available (datasheet A16674-1 for retrieval). Keep isoform-specific conclusions separate from staining intensity unless epitope coverage has been established.
How can I investigate MAGED4 localisation with multiplex IF?
Use the paraffin-section IHC result as a starting hypothesis, then validate the antibody and staining pattern separately for IF; the supplied A16674-1 image documents chromogenic tissue IHC (datasheet A16674-1). Pair MAGED4 with a marker identifying the cell population under study, and include single-stain and secondary-only controls to inspect bleed-through and nonspecific fluorescence. Choose fluorophores after checking tissue autofluorescence in each detection channel, favoring a cleaner channel for a weak MAGED4 signal. Select permeabilisation according to the mapped epitope’s accessibility: an intracellular epitope needs reagent access, whereas membrane-associated staining alone does not establish epitope orientation (UniProt Q96JG8 topology; HPA subcellular).
What should I check when MAGED4 DAB staining is diffuse or widespread?
First inspect no-primary and secondary-only sections for detection background, then compare them with the documented 2 μg/mL primary condition (datasheet A16674-1). The selected image used 10% goat-serum block, an overnight incubation at 4°C, and peroxidase-based DAB detection (datasheet A16674-1). Include an appropriate endogenous-peroxidase block as a general chromogenic IHC step, especially when brown signal appears independently of primary antibody. Recheck wash quality, section edges, precipitate, and development time before reducing the primary concentration. HPA cautions that its tissue antibody targets protein from more than one gene and that presumed off-target binding was disregarded, so broad staining needs independent specificity support (HPA tissue IHC).
How should I score MAGED4 staining across tissue sections? ⚠ ANSWER MARKED FOR VERIFICATION
Define the cell population and compartment before scoring: the tissue IHC profile describes cytoplasmic staining in selected tissues (HPA tissue IHC). For each annotated region, report the percentage of positive target cells and intensity, or calculate an H-score using the same intensity thresholds across specimens. If the question concerns spatial distribution, count positive target cells per mm² of viable tissue and report the sampled area. Normalize counts to the relevant cell population or viable tissue area, and compare sections processed with matched retrieval and DAB development. Document heterogeneous staining separately; a single whole-section average can obscure cell-type differences.
When does a MAGED4-positive section warrant a specificity check?
Treat staining as more convincing when it occupies the expected cell population, shows a reproducible cellular pattern, and exceeds no-primary background. The tissue IHC profile reports cytoplasmic staining in selected tissues, including adrenal glandular cells, while the selected product image shows staining in human adrenocortical adenoma (HPA tissue IHC; datasheet A16674-1). Scrutinize exclusively nuclear or sharply membranous signal, edge-heavy staining, necrotic areas, and brown deposits that persist after omitting primary antibody. An endogenous-peroxidase block and controlled DAB development help test enzyme-related artefact. Because HPA reports medium staining–RNA consistency and cautions about cross-gene targeting, corroborate unexpected cell-type positivity with independent evidence (HPA tissue IHC).
Boster reagents
Best MAGED4 / Melanoma-associated antigen D4 IHC Antibodies
A16674-1 has human paraffin-section IHC data in adrenocortical adenoma and bladder urothelial carcinoma, plus IF/ICC data in A549 cells (catalog image captions).
Real IHC data
Anti-MAGED4 Antibody ®
Cat # A16674-1
A16674-1 is listed for human IHC and shown on paraffin sections of adrenocortical adenoma and bladder urothelial carcinoma (catalog applications, reactivity and IHC image captions). The same SKU is listed for IF/ICC and shown in A549 cells (catalog applications and IF image caption).
Which to pick: For tissue IHC, choose A16674-1: its rabbit antibody is shown on paraffin sections after EDTA retrieval at pH 8.0, using 2 μg/ml primary antibody (catalog host and IHC image captions). For IF/ICC, choose A16674-1: it is listed for both applications and shown in A549 cells at 5 μg/ml (catalog applications and IF image caption). No cross-species option is documented, clonality is unreported, and the paraffin-section captions do not report a fixative.
Each figure is that product's own IHC / IF validation image from its datasheet.
References
- UniProt Consortium. UniProt entry Q96JG8 (MAGD4_HUMAN, Melanoma-associated antigen D4).
- Human Protein Atlas. MAGED4 tissue IHC expression (reliability: Approved).
- Human Protein Atlas. MAGED4 subcellular location (ICC-IF): Membrane.
- Human Protein Atlas. MAGED4 antibody validation summary (1 antibodies).
- Intratumoral Heterogeneity of MAGED4 Expression in Oral Squamous Cell Carcinoma: Epigenetic Mechanisms and Therapeutic Implications. International journal of molecular sciences 2025 — PMC12732915.
- PubMed PMID:11406556 — UniProt-cited evidence.
- PubMed PMID:11602350 — UniProt-cited evidence.
- PubMed PMID:11230166 — UniProt-cited evidence.
Immunohistochemistry protocol sheet for MAGED4 (Melanoma-associated antigen D4). Expected localisation Cytoplasmic in selected tissues (HPA tissue IHC). Antigen retrieval: EDTA pH 8.0 HIER, heat-mediated (datasheet A16674-1). Validated IHC antibody: A16674-1 at 2-5 μg/ml (the product's own IHC validation image is shown). Controls (HPA): positive Adrenal gland (Glandular cells); negative Adipose tissue. IHC-P workflow on paraffin sections; fixative unspecified. Protocol steps: 1. Sample: Paraffin-embedded human adrenocortical adenoma tissue; fixative not specified (datasheet A16674-1); 2. Fixation: Image fixative and duration unreported (datasheet A16674-1); verify before use.; 3. Sectioning: 4–5 µm sections on charged slides (standard); 4. Deparaffinisation: Xylene, graded ethanol series to water (standard); 5. Antigen retrieval: Heat retrieval: EDTA pH 8.0 (datasheet A16674-1); 20 min, 95–100 °C (standard); 6. Peroxidase block: 3% H2O2, 10 min , room temperature (standard); 7. Blocking: 10% goat serum (datasheet A16674-1); 8. Primary antibody: Rabbit anti-MAGED4, 2-5 μg/ml (datasheet A16674-1); 9. Primary incubation: Overnight at 4 °C (datasheet A16674-1). Watch for: Fixation: Keep fixation consistent across sections. (standard IHC practice; not target-specific); Caveat: Off-target staining reported; antibody targets >1 gene (HPA tissue IHC); Isoform / epitope: 4 isoforms; check epitope coverage across variants (UniProt); Regulation: Isoforms 1–2 occur in glioma cells (UniProt). Evidence: UniProt Q96JG8, HPA tissue IHC · Approved, HPA ICC-IF · Membrane, Datasheet A16674-1, PMC12732915. QR code links to https://www.bosterbio.com/bosterbio-gene-info-cards/MAGED4/immunohistochemistry-ihc-guide.