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BMP4 / Bone morphogenetic protein 4 · IHC design guide
Design Immunohistochemistry for BMP4
Plan BMP4 chromogenic IHC in paraffin sections using smooth muscle staining and extracellular positivity in placenta as reference patterns (HPA tissue IHC). Start the IHC-validated antibody at 1:50 (datasheet M00321), and account for BMP4 secretion and processing when interpreting the signal (UniProt).
Evidence assembled Oct 2026 · For research use; verify linked source records and product datasheet before use
BMP4 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 | Smooth muscle staining; extracellular signal in placenta (HPA tissue IHC) | |
| Staining pattern | Smooth muscle cells stain; placenta shows extracellular positivity (HPA tissue IHC) | |
| Antigen retrieval | Citrate pH 6 HIER, heat-mediated (datasheet M00321) | |
| Positive control | Adrenal gland+4 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 | Secretion can uncouple protein staining from tissue RNA (HPA tissue IHC) | |
| Regulation | MSX1-mediated self-induction (UniProt) | |
| Isoform / epitope | No annotated isoforms; propeptide and mature chain differ (UniProt) |
Section 1
Recommended BMP4 IHC & IF Protocols
Compare the catalog antibody’s IHC-P protocol (datasheet M00321) with four published BMP4 IHC protocols (PMC3851443; PMC6337410; PMC10240375; PMC7140810).
| Sample | Paraffin-embedded human breast cancer tissue; fixative not specified (datasheet M00321) |
| Fixation | Image fixative and duration unreported (datasheet M00321); verify before use. |
| Sectioning | 4–5 µm sections on charged slides (standard) |
| Deparaffinisation | Xylene, graded ethanol series to water (standard) |
| Antigen retrieval | Heat retrieval: Citrate pH 6, 20 min (datasheet M00321) |
| Peroxidase block | 3% H2O2, 10 min, room temperature (standard) |
| Blocking | 10% goat serum (datasheet M00321) |
| Primary antibody | Rabbit monoclonal (clone BBB-2) anti-BMP4, 1:50 recommended; image 1ug/ml (datasheet M00321) |
| Primary incubation | Overnight at 4 °C (datasheet M00321) |
| Detection | Streptavidin-biotin complex (SABC), DAB chromogen (datasheet M00321) |
| Counterstain | Hematoxylin, blue, dehydrate and mount (standard) |
| Expected result | BMP4-positive staining in glandular cells of adrenal gland (HPA tissue IHC: Medium). HPA tissue profile: Smooth muscle expression. Extracellular positivity in placenta. No signal in the no-primary control. |
💡Decision noteStart with heat-mediated citrate retrieval at pH 6 (datasheet M00321). The automated protocol reports 20 min of heat retrieval but does not specify buffer composition (PMC7140810).
Section 2
What Is the Expected BMP4 Staining Pattern?
BMP4 is secreted into extracellular space and matrix and has no transmembrane segment (UniProt P12644). In paraffin sections, assess extracellular staining in placenta and staining associated with smooth muscle cells; HPA also reports medium staining in several other cell types (HPA tissue IHC). Treat these as provisional expectations: HPA rates its tissue pattern uncertain because secretion complicates the relationship between RNA and protein location (HPA tissue IHC).
| Extracellular placental staining or staining associated with smooth muscle cells. | These match the reported placental extracellular positivity and smooth muscle expression (HPA tissue IHC). A secreted protein may appear beyond the cells that produced it, so location alone cannot identify its cellular source (UniProt P12644; HPA tissue IHC). |
| Predominantly nuclear staining in a candidate positive area. | BMP4 is annotated as secreted, extracellular and without a transmembrane segment (UniProt P12644). Check whether nuclear color is nonspecific before scoring it as BMP4; nuclear SMAD signaling downstream of BMP4 does not establish nuclear BMP4 protein (UniProt P12644). |
| Strong staining in a cell type HPA lists as not detected. | For example, HPA reports no detection in adipocytes or bronchial respiratory epithelial cells (HPA tissue IHC). Check background and antibody specificity before calling this BMP4. These reference negatives are provisional because HPA rates its tissue pattern uncertain (HPA tissue IHC). |
| Diffuse color across cells and surrounding tissue without a discernible pattern. | Some extracellular distribution is plausible for secreted BMP4 (UniProt P12644), but widespread color that also appears in a negative reagent control suggests background from the staining workflow (standard IHC practice). Compare controls and tissue architecture before scoring. |
| No staining in a reference positive area. | Medium staining is reported in smooth muscle cells and several other listed cell types, while placenta has extracellular positivity (HPA tissue IHC). First check whether the expected structure is present and controls worked; HPA's uncertain rating prevents treating one negative section as conclusive (HPA tissue IHC). |
💡Expected BMP4 appearanceA provisional positive result is extracellular placental color or discernible smooth muscle cell staining, with medium smooth muscle staining reported by HPA; predominant nuclear color or uniform control-positive background should prompt review (HPA tissue IHC; UniProt P12644; standard IHC practice).
| Secreted distribution (UniProt P12644) | Extracellular BMP4 can appear apart from producing cells; HPA specifically reports extracellular placental positivity, but rates the overall tissue pattern uncertain (HPA tissue IHC). Score location with tissue architecture rather than assigning every deposit to its nearest cell. |
| Precursor processing (UniProt P12644) | BMP4 has a signal peptide at residues 1–19, propeptide at 20–292 and mature chain at 293–408 (UniProt P12644). The antibody epitope is unspecified here, so these annotations do not establish which processed form the stain detects. |
| Reported tissue distribution (HPA tissue IHC; UniProt P12644) | HPA reports medium staining in cardiomyocytes, skeletal myocytes and selected glandular cells, alongside smooth muscle cells (HPA tissue IHC). UniProt reports expression in lung and lower levels in kidney; that does not override HPA's bronchial epithelial IHC result. |
| IHC antibody validation (HPA antibodies) | HPA labels IHC results from both HPA066235 and CAB006863 Uncertain (HPA antibodies). Their entries provide no enhanced validation claim; a matching tissue pattern remains supporting evidence rather than proof of antibody specificity. |
| IF/ICC reference limits (HPA subcellular; HPA antibodies) | HPA summarizes BMP4 as secreted but gives no main ICC/IF location or cell line images, and lists no ICC validation for these antibodies (HPA subcellular; HPA antibodies). Use the separate IF/ICC guide for that application; this IHC pattern cannot define an IF protocol. |
| Situation | Likely cause | Next action |
|---|---|---|
| Smooth muscle reference area is blank despite adequate tissue. | The section may lack a detectable signal, or the staining run may have failed; HPA reports medium smooth muscle staining but uncertain overall reliability (HPA tissue IHC). | Confirm the smooth muscle structure and review the run's positive and negative controls. If controls fail, check the IHC antibody dilution, antigen retrieval and chromogenic detection against the applicable protocol (standard IHC practice). |
| Placenta shows no extracellular color. | HPA reports extracellular placental positivity, but its uncertain rating limits how strongly a single negative section can be interpreted (HPA tissue IHC). | Confirm the relevant placental tissue is present and compare a valid control section. Review retrieval and detection steps using the chosen IHC protocol before interpreting absence as biological (standard IHC practice). |
| Brown color covers most of the section, including expected negative areas. | Diffuse color may reflect background rather than the localized extracellular or cell-associated pattern reported by HPA (HPA tissue IHC; standard IHC practice). | Compare a section processed without primary antibody; review blocking, washes and chromogen exposure, then rescore only tissue-associated signal above the control (standard IHC practice). |
| Strong nuclear color dominates otherwise plausible positive cells. | Nuclear staining conflicts with BMP4's secreted extracellular annotation; BMP4 signaling can lead to nuclear SMAD activity without placing BMP4 in nuclei (UniProt P12644). | Compare a negative reagent control and inspect extracellular and cell-associated staining separately. Do not use nuclear color alone as evidence of BMP4 protein (UniProt P12644; standard IHC practice). |
| Adipocytes or bronchial respiratory epithelial cells stain strongly. | HPA lists those specific cell types as not detected, although its tissue IHC assessment is uncertain (HPA tissue IHC). Unexpected staining could reflect nonspecific antibody binding or background. | Verify cell identity and compare negative controls. Seek an independently supported pattern before assigning the unexpected color to BMP4 (HPA tissue IHC; standard IHC practice). |
| An IF/ICC image appears inconsistent with the IHC result. | HPA provides no BMP4 ICC/IF image set or main subcellular location for comparison, and the listed antibodies have no ICC validation entry (HPA subcellular; HPA antibodies). | Interpret the IF/ICC experiment with its own controls and guide. Do not infer an IF staining compartment or protocol from the paraffin IHC pattern (HPA subcellular; standard IHC practice). |
Experiment evidence
IHC & IF images showing BMP4 staining
M00321 · IHCImmunohistochemical analysis of paraffin-embedded human breast cancer, using BMP4 Antibody(M00321) BMP4 was detected in paraffin-embedded ti
HPA · Cerebral cortexHuman Protein Atlas IHC, Cerebral cortex. Source: https://www.proteinatlas.org/ENSG00000125378-BMP4/tissue/cerebral+cortex#imid_19027170
HPA · ColonHuman Protein Atlas IHC, Colon. Source: https://www.proteinatlas.org/ENSG00000125378-BMP4/tissue/colon#imid_19027080
HPA · LiverHuman Protein Atlas IHC, Liver. Source: https://www.proteinatlas.org/ENSG00000125378-BMP4/tissue/liver#imid_19027081
HPA · KidneyHuman Protein Atlas IHC, Kidney. Source: https://www.proteinatlas.org/ENSG00000125378-BMP4/tissue/kidney#imid_19027082
← swipe / scroll for more images →
Real IHC / IF data behind the staining-pattern expectations in this section.
Sample controls for BMP4 IHC & IF
🧪Run small intestine first and look for BMP4 staining in glandular cells (HPA: Medium in small intestine glandular cells). Use appendix glandular cells as a negative tissue comparator (HPA: Not detected); on the positive slide, unstained neighboring cells can show background, but HPA does not establish an internal BMP4-negative cell type.
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 BMP4; 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) slide, a concentration-matched rabbit IgG isotype control appropriate to the primary antibody’s clonality, and BMP4 knockout material as a biological negative. For chromogenic detection, check endogenous peroxidase and biotin background, particularly with the caption’s biotinylated secondary and streptavidin-biotin detection (M00321 tissue-IHC caption).
⚠️Feasibility: A target-specific fixation window is unreported, and the fixative is unreported in the selected M00321 paraffin-section caption (M00321 tissue-IHC caption). That caption uses citrate retrieval at pH 6 for 20 minutes, but does not establish that retrieval is required (M00321 tissue-IHC caption). Frozen sections or IF cannot be judged easier from these data; extracellular BMP4 may complicate assignment of staining to individual cells, and small-intestine chromogenic staining should be checked for endogenous enzyme or biotin background (UniProt P12644 subcellular location; HPA: Medium in small intestine glandular cells).
HPA tissue IHC evidence for BMP4
Comprehensive Human Protein Atlas IHC scoring per tissue (reliability: Uncertain — At least one protein variant secreted, tissue location of RNA and protein might differ and correlation is complex.). 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 → |
| Heart muscle | Cardiomyocytes | Medium | Protein (IHC) | HPA → |
| Skeletal muscle | Myocytes | Medium | Protein (IHC) | HPA → |
| Small intestine | Glandular cells | Medium | Protein (IHC) | HPA → |
| Smooth muscle | Smooth muscle 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 BMP4 IHC Tips
Troubleshoot BMP4 chromogenic IHC in paraffin sections by checking retrieval, staining compartment, controls, and scoring separately.
Which retrieval condition should I try first for weak BMP4 staining?
Use heat-mediated citrate antigen retrieval at pH 6 for 20 minutes before chromogenic BMP4 IHC (datasheet M00321; caption M00321). The selected paraffin-section example then used 10% goat serum block and 1 µg/mL primary antibody overnight at 4°C, providing a matched starting workflow (caption M00321). If staining remains weak, compare a modest change in heating time on matched sections while keeping antibody concentration and detection constant, and inspect tissue preservation alongside signal (standard IHC practice). Include a no-primary control and a known positive section in the same run so a retrieval change can be separated from nonspecific DAB deposition or detection failure (standard IHC practice).
How should I troubleshoot variable BMP4 staining across paraffin blocks?
The selected image documents paraffin embedding but does not state the fixative, so BMP4-specific sensitivity to fixation is unknown (caption M00321). Record each block’s fixative, fixation duration, processing history, section thickness, and storage conditions before comparing staining intensity across cases (standard IHC practice). Run matched sections from the blocks together using citrate retrieval at pH 6 for 20 minutes and the same antibody and detection settings (caption M00321; standard IHC practice). If a block remains weak, assess its morphology and a suitable positive control before adjusting retrieval, because differences in fixation or processing cannot be assigned to BMP4 from the supplied evidence (standard IHC practice; caption M00321).
Where should BMP4 staining appear, and how do I assess intracellular signal?
BMP4 is secreted and associated with extracellular space and matrix, with no annotated transmembrane segment, so evaluate extracellular staining separately from staining within cells (UniProt P12644 topology and subcellular record). The tissue profile reports smooth muscle expression and extracellular positivity in placenta, while its overall IHC reliability is uncertain (HPA tissue IHC). Intracellular signal may reflect BMP4 production, but the supplied staining evidence does not establish which molecular form is present in a given cell (UniProt P12644 processing; HPA tissue IHC). Compare cellular and matrix patterns with matched no-primary controls and tissue morphology; do not treat diffuse edge staining or necrotic deposits as localisation evidence (standard IHC practice).
Can staining distinguish BMP4 precursor from mature secreted protein?
BMP4 has no annotated isoforms in the supplied record, but its 408-amino-acid precursor includes a signal peptide at residues 1–19, propeptide at 20–292, and mature chain at 293–408 (UniProt P12644 processing and isoforms). Glycosylation is annotated at residues 143, 208, 350, and 365, so the detected molecular form depends on where the antibody binds (UniProt P12644 glycosylation; standard immunostaining principle). The supplied caption gives staining conditions but no epitope map; its DAB signal therefore cannot be assigned specifically to precursor, propeptide, or mature BMP4 (caption M00321). Obtain epitope documentation before making form-specific claims, and score cellular and extracellular compartments separately while that distinction remains unresolved (standard IHC practice; UniProt P12644 subcellular record).
How could IF help resolve the cellular source of BMP4 staining?
For a separate IF experiment, multiplex BMP4 with a validated smooth muscle cell marker where that cell population is being examined, since the tissue profile reports smooth muscle expression (HPA tissue IHC; standard IF practice). Choose spectrally separated fluorophores, favouring a far-red channel if the specimen shows strong short-wavelength autofluorescence, and include single-stain and no-primary controls (standard IF practice). For extracellular BMP4, assess a condition without permeabilisation; permeabilise only when testing an intracellular precursor epitope, whose recognition by this antibody has not been documented here (UniProt P12644 processing and subcellular record; caption M00321; standard IF practice). The selected antibody evidence is a paraffin-section chromogenic IHC example, so establish IF staining and localisation independently rather than treating that image as IF validation (caption M00321).
What should I check when BMP4 DAB staining is widespread?
First inspect a no-primary section and the tissue morphology to distinguish antibody-dependent staining from chromogen deposits, damaged areas, and edge effects (standard IHC practice). The selected example used 10% goat serum, a biotinylated secondary antibody, a streptavidin–biotin complex, and DAB; reproduce its blocking step and check secondary-only staining when troubleshooting that detection scheme (caption M00321; standard IHC practice). Apply an endogenous peroxidase block as a general chromogenic IHC step, and assess endogenous biotin when using biotin-based detection (standard IHC practice). Because BMP4 can occur extracellularly, judge diffuse staining against no-primary controls and preserved tissue structure before labelling it nonspecific (UniProt P12644 subcellular record; standard IHC practice).
How should I quantify BMP4 staining when both cells and matrix are positive? ⚠ ANSWER MARKED FOR VERIFICATION
Define cellular and extracellular regions before scoring, because BMP4 is secreted and the tissue profile reports extracellular positivity in placenta (UniProt P12644 subcellular record; HPA tissue IHC). For cells, report percent positive and an H-score based on the fractions at intensity grades 0–3, using the same threshold and eligible cell population across sections (standard IHC practice). For matrix, report positive area or optical-density measurements per mm² of viable tissue, with illumination and DAB development held constant (standard image-analysis practice). Normalise cellular results to eligible cells and extracellular results to measured viable area, excluding folds, edges, and necrosis by a prespecified rule (standard IHC practice).
How can I distinguish credible BMP4 staining from artefact?
A credible pattern should be reproducible, anatomically coherent, and compatible with secreted or extracellular BMP4, while cellular staining requires its own interpretation (UniProt P12644 subcellular record; standard IHC practice). Compare the candidate signal with the reported smooth muscle expression and extracellular placental positivity, but treat these as context because the tissue IHC reliability is rated uncertain (HPA tissue IHC). Review no-primary and detection controls, and reject staining concentrated at section edges, folds, necrosis, or sites of endogenous enzyme activity when controls support an artefact (standard IHC practice). Do not infer the producing cell solely from extracellular DAB or demand agreement with tissue RNA, since protein and RNA locations may differ for a secreted variant (HPA tissue IHC).
Boster reagents
Best BMP4 / Bone morphogenetic protein 4 IHC Antibodies
M00321 has a real IHC figure from a paraffin-embedded human breast cancer section (IHC image caption); IF/ICC is listed as an application, but no IF figure is supplied (catalog applications; IF image alts).
Real IHC data
Anti-BMP4 Rabbit Monoclonal Antibody
Cat # M00321
M00321 will render with its IHC figure showing BMP4 staining in a paraffin-embedded human breast cancer section (IHC image caption). IF/ICC is listed for M00321, with human reactivity reported, but the payload contains no IF image (catalog applications; catalog reactivity; IF image alts).
Which to pick: Choose M00321 for human paraffin-section IHC: it is a rabbit monoclonal antibody with an IHC application and a matching tissue figure (catalog host and clone; catalog applications; IHC image caption). For IF/ICC, M00321 is the listed option, though no IF figure is supplied (catalog applications; IF image alts). No cross-species option is supported because M00321 lists human reactivity only; the IHC caption does not report the fixative (catalog reactivity; IHC image caption).
Each figure is that product's own IHC / IF validation image from its datasheet.
References
- UniProt Consortium. UniProt entry P12644 (BMP4_HUMAN, Bone morphogenetic protein 4).
- Human Protein Atlas. BMP4 tissue IHC expression (reliability: Uncertain).
- Human Protein Atlas. BMP4 subcellular location (ICC-IF): Secreted.
- Human Protein Atlas. BMP4 antibody validation summary (2 antibodies).
- BMP4, a new prognostic factor for glioma. World journal of surgical oncology 2013 — PMC3851443.
- Myelination in Multiple Sclerosis Lesions Is Associated with Regulation of Bone Morphogenetic Protein 4 and Its Antagonist Noggin. International journal of molecular sciences 2019 — PMC6337410.
- Transcriptome identification of genes associated with uterus-vagina junction epithelial folds formation in chicken hens. Poultry science 2023 — PMC10240375.
- A Wnt-BMP4 Signaling Axis Induces MSX and NOTCH Proteins and Promotes Growth Suppression and Differentiation in Neuroblastoma. Cells 2020 — PMC7140810.
- PubMed PMID:3201241 — UniProt-cited evidence.
- PubMed PMID:9701626 — UniProt-cited evidence.
- PubMed PMID:15489334 — UniProt-cited evidence.
Immunohistochemistry protocol sheet for BMP4 (Bone morphogenetic protein 4). Expected localisation Smooth muscle staining; extracellular signal in placenta (HPA tissue IHC). Antigen retrieval: Citrate pH 6 HIER, heat-mediated (datasheet M00321). Validated IHC antibody: M00321 at 1:50 recommended; image 1ug/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 breast cancer tissue; fixative not specified (datasheet M00321); 2. Fixation: Image fixative and duration unreported (datasheet M00321); 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: Citrate pH 6 , 20 min (datasheet M00321); 6. Peroxidase block: 3% H2O2, 10 min , room temperature (standard); 7. Blocking: 10% goat serum (datasheet M00321); 8. Primary antibody: Rabbit monoclonal (clone BBB-2) anti-BMP4, 1:50 recommended; image 1ug/ml (datasheet M00321); 9. Primary incubation: Overnight at 4 °C (datasheet M00321). Watch for: Fixation: Keep fixation consistent across sections (standard IHC practice; not target-specific); Caveat: Secretion can uncouple protein staining from tissue RNA (HPA tissue IHC); Isoform / epitope: No annotated isoforms; propeptide and mature chain differ (UniProt); Regulation: MSX1-mediated self-induction (UniProt). Evidence: UniProt P12644, HPA tissue IHC · Uncertain, HPA ICC-IF · Secreted, Datasheet M00321, PMC3851443, PMC6337410. QR code links to https://www.bosterbio.com/bosterbio-gene-info-cards/BMP4/immunohistochemistry-ihc-guide.