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HAND1 / Heart- and neural crest derivatives-expressed protein 1 · IHC design guide
Design Immunohistochemistry for HAND1
This HAND1 IHC-P guide covers the nuclear membranous tissue pattern (HPA tissue IHC) alongside the nucleoplasmic and nucleolar molecular location (UniProt). Start the catalog antibody at 1:100–1:300 (datasheet), and interpret staining with controls because tissue evidence has uncertain reliability (HPA tissue IHC).
Evidence assembled Oct 2026 · For research use; verify linked source records and product datasheet before use
HAND1 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 | Nuclear membranous tissue staining (HPA tissue IHC) | |
| Staining pattern | Nuclear membranous staining in most tissues, including CNS (HPA tissue IHC) | |
| Antigen retrieval | Tris-EDTA pH 9.0 HIER, 95–98 °C, 20 min (rule: nuclear antigen) | |
| Positive control | Caudate+4 more · see all | |
| Negative control | Adipose tissue+4 more · see all |
Important caveats
Reasons your staining may differ from the expected pattern.
| Fixation | Matched tissue-IHC evidence does not establish the fixation claim. Validate the specimen-specific method before use. (selected-SKU IHC image A06496-1) | |
| Caveat | Presumed off-target staining and low RNA agreement (HPA tissue IHC) | |
| Regulation | PLK4 may release HAND1 from the nucleolus (UniProt) | |
| Isoform / epitope | No annotated isoforms; one 1–215 chain (UniProt) |
Section 1
Recommended HAND1 IHC & IF Protocols
The catalog antibody has its own IHC-P protocol. Published HAND1 IHC methods add paraffin bone preparation and chromogenic detection details (PMC4769249), plus antibody dilution and incubation details (PMC9760445).
| Sample | Paraffin-embedded human brain tissue; fixative not specified (datasheet A06496-1) |
| Fixation | Image fixative and duration unreported (datasheet A06496-1); verify before use. |
| Sectioning | 4–5 µm sections on charged slides (standard) |
| Deparaffinisation | Xylene, graded ethanol series to water (standard) |
| Antigen retrieval | Heat-induced epitope retrieval in Tris-EDTA buffer, pH 9.0, 20 min at 95–98 °C (standard rule: nuclear antigen) |
| Peroxidase block | 3% H2O2, 10 min, room temperature (standard) |
| Blocking | 10% normal serum of the secondary host, 30 min, room temperature (standard) |
| Primary antibody | Rabbit anti-HAND1, 1:100 - 1:300 (datasheet A06496-1) |
| Primary incubation | Overnight at 4 °C (standard) |
| Detection | HRP-polymer secondary, DAB chromogen 5–10 min (standard) |
| Counterstain | Hematoxylin, blue, dehydrate and mount (standard) |
| Expected result | HAND1-positive staining in glial cells of caudate (HPA tissue IHC: High). HPA tissue profile: Nuclear membranous expression in most tissues including CNS. No signal in the no-primary control. |
💡Decision noteStart with Tris-EDTA HIER at pH 9.0, 95–98 °C for 20 min for nuclear HAND1 (page retrieval rule; UniProt: nuclear localisation).
Section 2
What Is the Expected HAND1 Staining Pattern?
HAND1 is a nuclear transcription factor found in the nucleoplasm and, under some conditions, the nucleolus (UniProt O96004). In paraffin-section IHC, assess staining within cells of the tissue being examined; HPA reports high staining in selected glial cells and cerebellar molecular-layer cells, but rates its tissue IHC profile Uncertain because staining and RNA expression show low consistency and presumed off-target binding was observed (HPA: tissue IHC). HAND1 has no transmembrane segment (UniProt O96004).
| Distinct nuclear staining in a subset of cells, with visible nuclear detail. | This fits HAND1's reported nuclear location (UniProt O96004). Record the stained cell type and compartment; nuclear location alone cannot establish specificity because HPA rates tissue IHC Uncertain (HPA: tissue IHC). |
| Predominantly cytoplasmic stain, with little or no nuclear signal. | This conflicts with HAND1's nucleoplasmic and nucleolar locations (UniProt O96004). Review the staining controls and antibody specificity before scoring these cells as positive (general IHC practice). |
| Strong signal across many cell types, especially as a nuclear rim without clear nucleoplasmic staining. | HPA describes nuclear-membranous staining across most tissues but flags presumed off-target binding and low consistency with RNA data (HPA: tissue IHC). A nuclear rim alone is therefore insufficient evidence of HAND1 in tissue IHC. |
| Diffuse color over nuclei, cytoplasm and surrounding tissue. | Diffuse deposition prevents reliable compartment scoring (general IHC practice). Compare a matched negative detection control and inspect whether the color follows tissue structures rather than individual nuclei (general IHC practice). |
| No stain in a section selected because HPA reports high staining there. | The absence needs a technical check, but the HPA-high designation is not an independently validated positive control: the tissue IHC profile is Uncertain (HPA: tissue IHC). |
| Nuclear staining restricted to a cell population reported as not detected by HPA. | For example, HPA reports adipocytes and bone-marrow hematopoietic cells as not detected (HPA: tissue IHC). Treat a result in those cells as a specificity question requiring controls, while recognizing that the HPA tissue profile itself is uncertain (HPA: tissue IHC). |
💡Expected HAND1 appearanceThe most defensible positive call is distinct nuclear staining in identifiable cells, supported by controls; predominantly cytoplasmic or indiscriminate nuclear-rim staining is suspect (UniProt O96004; HPA: tissue IHC; general IHC practice).
| Tissue IHC evidence | HPA reports high staining in caudate and cerebral-cortex glial cells and cerebellar molecular-layer cells, yet assigns Uncertain reliability because staining and RNA data have low consistency (HPA: tissue IHC). |
| Tissue choice | UniProt lists heart tissue specificity; HPA reports RNA enhancement in heart muscle and intestine (UniProt O96004; HPA: tissue IHC). Neither statement establishes a validated heart-section IHC positive control (HPA: tissue IHC). |
| Nuclear distribution | HAND1 is reported in nucleoplasm and nucleolus; MDFIC interaction can sequester it in the nucleolus, with PLK4 phosphorylation linked to release in a by-similarity annotation (UniProt O96004). Do not require identical nuclear distribution in every cell. |
| Topology and processing | HAND1 has no transmembrane segment or signal peptide, and UniProt lists a single chain spanning residues 1–215 (UniProt O96004). The record supplies no antibody epitope or target-specific antigen-retrieval response. |
| Antibody validation | HPA040925 is Uncertain for IHC; HPA040925 and HPA075313 are Approved for ICC (HPA: antibody validation). ICC approval does not resolve the uncertainty of paraffin-section IHC. |
| Situation | Likely cause | Next action |
|---|---|---|
| Nuclear stain is weak or absent throughout the run. | A run-level detection or staining problem is possible (general IHC practice). | Check the run controls, section integrity and detection reagents; interpret a negative HAND1 result only after the controls perform as expected (general IHC practice). |
| An HPA-high comparison section is negative. | HPA's tissue IHC profile is Uncertain, so its high-staining images do not establish a validated positive control (HPA: tissue IHC). | Check run controls and review tissue and cell identification before concluding that the test section lacks HAND1 (general IHC practice). |
| Most tissues show a strong nuclear rim. | HPA reports a widespread nuclear-membranous pattern and presumed off-target binding (HPA: tissue IHC). | Compare the rim with nucleoplasmic staining and negative controls; avoid scoring rim-only signal as confirmed HAND1 (UniProt O96004; general IHC practice). |
| Color appears in places where no primary-antibody signal is expected. | Endogenous detection activity or nonspecific detection can produce color in chromogenic IHC (general IHC practice). | Review the negative detection control and apply blocking appropriate to the detection system, then reassess the cellular pattern (general IHC practice). |
| Cytoplasmic staining dominates the section. | The pattern disagrees with the reported nuclear localization of HAND1 (UniProt O96004). | Check controls and reassess localization before calling cells positive; record the cytoplasmic signal as discordant if it persists (general IHC practice). |
| IF/ICC: where should HAND1 appear? | HPA's ICC-IF localization evidence is separate from its Uncertain tissue IHC assessment (HPA: subcellular; HPA: tissue IHC). | Expect mainly nucleoplasmic signal, with additional nuclear-body or nuclear-membrane signal reported in ICC-IF; use the separate IF/ICC guide for that assay (HPA: subcellular). |
Experiment evidence
IHC & IF images showing HAND1 staining
A06496-1 · IHCImmunohistochemistry analysis of paraffin-embedded human brain tissue, using HAND1 Antibody. The picture on the right is blocked with the sy
HPA · Cerebral cortexHuman Protein Atlas IHC, Cerebral cortex. Source: https://www.proteinatlas.org/ENSG00000113196-HAND1/tissue/cerebral+cortex#imid_10352585
HPA · ColonHuman Protein Atlas IHC, Colon. Source: https://www.proteinatlas.org/ENSG00000113196-HAND1/tissue/colon#imid_10405512
HPA · LiverHuman Protein Atlas IHC, Liver. Source: https://www.proteinatlas.org/ENSG00000113196-HAND1/tissue/liver#imid_10403040
HPA · KidneyHuman Protein Atlas IHC, Kidney. Source: https://www.proteinatlas.org/ENSG00000113196-HAND1/tissue/kidney#imid_10406436
HPA · ICC-IF SH-SY5YHuman Protein Atlas immunofluorescence, SH-SY5Y, antibody HPA040925; green = HAND1, blue = nucleus, red = microtubules.
HPA · ICC-IF SH-SY5YHuman Protein Atlas immunofluorescence, SH-SY5Y, antibody HPA040925; green = HAND1, blue = nucleus, red = microtubules.
← swipe / scroll for more images →
Real IHC / IF data behind the staining-pattern expectations in this section.
Sample controls for HAND1 IHC & IF
🧪Run caudate first and score glial cells for nuclear staining (HPA: High in caudate glial cells; UniProt O96004: nuclear localisation). Use adipose tissue as the negative tissue (HPA: Not detected in adipocytes); on the caudate slide, cells without nuclear signal provide an internal background reference, but their identity alone does not establish HAND1 negativity.
Positive control tissue: Caudate (Glial cells, HPA High)
Negative control tissue: Adipose tissue (HPA Not detected)
ICC-IF cell lines (HPA subcellular resource): HPA ICC-IF images show HAND1 in SH-SY5Y, U-251MG, U2OS, SuSa, with annotated localisation: Nucleoplasm (approved) (HPA subcellular).
Technical controls: Include no-primary (secondary-only) and host-species- and clonality-matched isotype controls, and check specificity with HAND1 knockout material or peptide blocking (selected A06496-1 IHC caption: signal blocked with synthesized peptide). For brain sections, quench endogenous peroxidase before chromogenic detection and assess lipofuscin autofluorescence if using IF (standard IHC/IF practice).
⚠️Feasibility: A HAND1-specific fixation window or fixation effect is unreported, and the selected A06496-1 paraffin brain caption does not state a fixative (selected A06496-1 IHC caption: fixative not stated). A HAND1-specific antigen-retrieval dependency is also unreported; compare standard heat retrieval with no retrieval on serial sections (standard IHC practice). The available ICC-IF images do not establish that IF or frozen sections are easier than paraffin IHC (HPA subcellular: ICC-IF images); brain lipofuscin can complicate IF interpretation (standard IHC/IF practice).
HPA tissue IHC evidence for HAND1
Comprehensive Human Protein Atlas IHC scoring per tissue (reliability: Uncertain — Low 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.
Positive expression · recommended positive controls
| Tissue | Cell type | Level | Evidence | Source |
|---|---|---|---|---|
| Caudate | Glial cells | High | Protein (IHC) | HPA → |
| Cerebellum | Cells in molecular layer | High | Protein (IHC) | HPA → |
| Cerebral cortex | Glial cells | High | Protein (IHC) | HPA → |
| Adrenal gland | Glandular cells | Medium | Protein (IHC) | HPA → |
| Duodenum | Glandular cells | Medium | Protein (IHC) | HPA → |
Undetected expression · recommended negative controls
| Tissue | Cell type | Level | Evidence | Source |
|---|---|---|---|---|
| Adipose tissue | Adipocytes | Not detected | Protein (IHC) | HPA → |
| Bone marrow | Hematopoietic cells | Not detected | Protein (IHC) | HPA → |
| Cervix | Glandular cells | Not detected | Protein (IHC) | HPA → |
| Endometrium | Cells in endometrial stroma | Not detected | Protein (IHC) | HPA → |
| Esophagus | Squamous epithelial cells | Not detected | Protein (IHC) | HPA → |
Section 3
Advanced HAND1 IHC Tips
Troubleshoot HAND1 staining by checking retrieval, nuclear localisation, controls, and cell-level scoring while treating uncertain tissue staining cautiously (HPA tissue IHC).
How should I retrieve HAND1 in paraffin sections when nuclear staining is weak?
Start with Tris-EDTA at pH 9.0, heated to 95–98 °C for 20 minutes (page retrieval specification). Allow sections to cool consistently, then compare staining with a no-primary control and a known positive section processed in the same run (standard IHC practice). HAND1 is chiefly nucleoplasmic, so assess nuclear signal before changing retrieval conditions (HPA subcellular). If signal remains weak, compare a milder retrieval condition on adjacent sections while holding antibody and detection settings constant (standard IHC practice). Record tissue preservation alongside signal, because damaged morphology makes compartment-level interpretation unreliable (standard IHC practice).
Could fixation explain weak or patchy HAND1 staining?
HAND1-specific sensitivity to fixation is unknown from the supplied evidence; the catalog image identifies paraffin-embedded human brain tissue but does not state its fixative (catalog antibody A06496-1 caption). Record fixative, fixation duration, processing history, and section age before comparing affected slides with better-staining material (standard IHC practice). Run sections from the same processing batch together and keep retrieval at Tris-EDTA pH 9.0, 95–98 °C for 20 minutes initially (page retrieval specification). Compare preserved and damaged regions under the same detection conditions, using nuclear morphology to judge whether staining differences are interpretable (standard IHC practice). Do not assign a HAND1-specific fixation effect without a controlled comparison.
Should HAND1 staining appear at the nuclear membrane or in nucleoli?
Score nucleoplasmic staining first: it is the approved main location, with nuclear membrane and nuclear bodies reported as additional locations (HPA subcellular). UniProt also places HAND1 in the nucleolus and describes MDFIC-dependent sequestration there, with PLK4-associated release described by similarity (UniProt O96004). Therefore, document nucleoplasmic, rim-like, and nucleolar patterns separately instead of pooling all brown nuclear-associated signal into one result (standard IHC practice). Compare each pattern with no-primary controls, tissue morphology, and adjacent cells before assigning specificity (standard IHC practice). Widespread staining restricted to the nuclear rim deserves particular caution because the tissue IHC profile has uncertain reliability (HPA tissue IHC).
How can I troubleshoot an epitope-dependent change in HAND1 staining?
The supplied record lists 0 isoforms, a bHLH domain at residues 94–146, and PLK4-associated phosphorylation at residues 107 and 109 (UniProt O96004). It does not map the catalog antibody’s epitope, so an epitope-specific explanation for altered paraffin-section staining remains untested. Compare adjacent sections with identical detection and different retrieval conditions, recording both nuclear signal and tissue preservation (standard IHC practice). The catalog paraffin-tissue image includes a synthesized-peptide block, which supports a competition check for that image but does not establish binding across all tissues (catalog antibody A06496-1 caption). If the epitope sequence becomes available, assess its relation to the domain and modified residues before interpreting discordant results (UniProt O96004).
How should I check HAND1 localisation in a multiplex IF experiment?
For the separate IF/ICC workflow, pair HAND1 with a validated marker for the expected cell population, such as a glial marker when examining the glial populations reported in brain tissue (HPA tissue IHC). Choose spectrally separated fluorophores and consider a far-red HAND1 channel if tissue autofluorescence obscures shorter wavelengths (standard IF practice). HAND1 has no transmembrane segment and is mainly nucleoplasmic, so optimise permeabilisation for nuclear antibody access rather than a membrane-facing epitope (UniProt O96004; HPA subcellular). Compare stained samples with single-channel and no-primary controls before calling colocalisation (standard IF practice). The listed IF/ICC images come from SH-SY5Y, U-251MG, U2OS, and SuSa cells; they do not establish this catalog antibody’s IF performance (HPA subcellular).
What should I check when HAND1 IHC shows diffuse brown background?
Inspect no-primary controls and compare background with intact nuclear signal before increasing antibody dilution or changing retrieval (standard IHC practice). Include a peroxidase block before chromogenic detection and assess whether DAB precipitate, endogenous enzyme activity, or section edges explain the brown signal (standard IHC practice). HAND1 is mainly nucleoplasmic and lacks a transmembrane segment, so diffuse extracellular staining is discordant with its annotated location (HPA subcellular; UniProt O96004). Optimise blocking, washes, and detection exposure on matched sections while keeping Tris-EDTA retrieval at pH 9.0 initially (standard IHC practice; page retrieval specification). Interpret residual widespread staining cautiously because the tissue IHC profile notes presumed off-target binding and uncertain reliability (HPA tissue IHC).
How should I quantify HAND1 staining across paraffin sections? ⚠ ANSWER MARKED FOR VERIFICATION
Define the cell population and nuclear compartment before scoring, then report the percentage of positive nuclei and an intensity-based H-score using 0–3 intensity categories, where appropriate (standard IHC practice). Normalise positive-cell counts to all evaluable nuclei in the same region, or report positive nuclei per mm² with the sampled area stated (standard IHC practice). Apply one threshold and imaging setup across compared sections, and exclude folded, necrotic, or edge-damaged regions by a prespecified rule (standard IHC practice). Record nucleoplasmic signal separately from nuclear-rim staining because both locations appear in the supplied annotations (HPA subcellular). Include control results and avoid treating an H-score alone as proof of specificity, given the uncertain tissue IHC reliability (HPA tissue IHC).
How can I distinguish genuine HAND1 staining from an artefact?
Give greatest weight to reproducible nuclear staining in morphologically intact cells, with nucleoplasm as the primary expected compartment (HPA subcellular; standard IHC practice). Compare the staining with cell identity: the supplied tissue IHC data report high signal in glial cells in caudate and cerebral cortex, but classify overall reliability as uncertain (HPA tissue IHC). Reject signals confined to section edges, necrotic regions, or no-primary controls, and check whether a peroxidase block removes enzyme-related chromogen deposition (standard IHC practice). The catalog image’s peptide-blocked companion supports competition in paraffin-embedded human brain tissue, without establishing its fixative or proving specificity elsewhere (catalog antibody A06496-1 caption). Corroborate unexpected compartments or cell populations with an independent method before interpreting biological differences (standard IHC practice).
Boster reagents
Best HAND1 / Heart- and neural crest derivatives-expressed protein 1 IHC Antibodies
The catalog antibody has a real IHC image from paraffin-embedded human brain and lists IF/ICC use; listed reactivity covers human, mouse, and rat (catalog image caption; catalog applications/reactivity).
Real IHC data
Anti-HAND1 Antibody
Cat # A06496-1
A06496-1 will render with an IHC image of paraffin-embedded human brain, including a peptide-blocked companion image (catalog IHC caption). It is listed for IHC, IF, ICC, and ELISA in human, mouse, and rat (catalog applications/reactivity).
Which to pick: For tissue IHC, choose A06496-1: its own caption documents paraffin-embedded human brain, and the listed IHC dilution is 1:100–1:300 (catalog IHC caption; datasheet: 1:100–1:300). The caption does not report the fixative (catalog IHC caption). For IF/ICC or work across the listed human, mouse, and rat species, A06496-1 is the available rabbit polyclonal option; IF/ICC are listed applications, though no IF image is supplied (catalog host/clonality, applications, reactivity, and image alts).
Each figure is that product's own IHC / IF validation image from its datasheet.
References
- UniProt Consortium. UniProt entry O96004 (HAND1_HUMAN, Heart- and neural crest derivatives-expressed protein 1).
- Human Protein Atlas. HAND1 tissue IHC expression (reliability: Uncertain).
- Human Protein Atlas. HAND1 subcellular location (ICC-IF): Mainly localized to the nucleoplasm. In addition localized to the nuclear bodies and nuclear membrane..
- Human Protein Atlas. HAND1 antibody validation summary (2 antibodies).
- Analysis of the Hand1 cell lineage reveals novel contributions to cardiovascular, neural crest, extra-embryonic, and lateral mesoderm derivatives. Developmental dynamics : an official publication of the American Association of Anatomists 2010 — PMC2965316.
- The Transcription Factor Hand1 Is Involved In Runx2-Ihh-Regulated Endochondral Ossification. PloS one 2016 — PMC4769249.
- The developmental regulator HAND1 inhibits gastric carcinogenesis through enhancing ER stress apoptosis via targeting CHOP and BAK which is augmented by cisplatin. International journal of biological sciences 2023 — PMC9760445.
- Identification of Thymosin β4 as an effector of Hand1-mediated vascular development. Nature communications 2010 — PMC2963826.
- PubMed PMID:9931445 — UniProt-cited evidence.
- PubMed PMID:15489334 — UniProt-cited evidence.
Immunohistochemistry protocol sheet for HAND1 (Heart- and neural crest derivatives-expressed protein 1). Expected localisation Nuclear membranous tissue staining (HPA tissue IHC). Antigen retrieval: Tris-EDTA pH 9.0 HIER, 95–98 °C, 20 min (rule: nuclear antigen). Validated IHC antibody: A06496-1 at 1:100 - 1:300 (the product's own IHC validation image is shown). Controls (HPA): positive Caudate (Glial cells); negative Adipose tissue. IHC-P workflow on paraffin sections; fixative unspecified. Protocol steps: 1. Sample: Paraffin-embedded human brain tissue; fixative not specified (datasheet A06496-1); 2. Fixation: Image fixative and duration unreported (datasheet A06496-1); 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-induced epitope retrieval in Tris-EDTA buffer, pH 9.0 , 20 min at 95–98 °C…; 6. Peroxidase block: 3% H2O2, 10 min , room temperature (standard); 7. Blocking: 10% normal serum of the secondary host, 30 min , room temperature (standard); 8. Primary antibody: Rabbit anti-HAND1, 1:100 - 1:300 (datasheet A06496-1); 9. Primary incubation: Overnight at 4 °C (standard). Watch for: Fixation: Matched tissue-IHC evidence does not establish the fixation claim. Validate the specimen-specific method before use. (selected-SKU IHC image A06496-1); Caveat: Presumed off-target staining and low RNA agreement (HPA tissue IHC); Isoform / epitope: No annotated isoforms; one 1–215 chain (UniProt); Regulation: PLK4 may release HAND1 from the nucleolus (UniProt). Evidence: UniProt O96004, HPA tissue IHC · Uncertain, HPA ICC-IF · Mainly localized to the nucleoplasm. In addition localized to the…, Datasheet A06496-1, PMC4769249, PMC9760445. QR code links to https://www.bosterbio.com/bosterbio-gene-info-cards/HAND1/immunohistochemistry-ihc-guide.