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GNE / Bifunctional UDP-N-acetylglucosamine 2-epimerase/N-acetylmannosamine kinase · IHC design guide
Design Immunohistochemistry for GNE
Plan chromogenic GNE IHC in paraffin sections using the catalog antibody at 2–5 μg/ml (datasheet A01647-3). Compare cytoplasmic staining with high staining in glandular cells of the colon or duodenum, while accounting for low consistency between staining and RNA expression (HPA tissue IHC).
Evidence assembled Oct 2026 · For research use; verify linked source records and product datasheet before use
GNE 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 staining in most tissues (HPA tissue IHC) | |
| Staining pattern | Cytoplasmic staining; high in several glandular sites (HPA tissue IHC) | |
| Antigen retrieval | EDTA pH 8.0 HIER, heat-mediated (datasheet A01647-3) | |
| Positive control | Colon+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 paraffin sections (standard IHC practice; not target-specific) | |
| Caveat | Staining has low consistency with RNA expression (HPA tissue IHC) | |
| Regulation | Expression varies by tissue (UniProt) | |
| Isoform / epitope | 5 isoforms; epitope coverage is unspecified (UniProt) |
Section 1
Recommended GNE IHC & IF Protocols
Start with the catalog antibody’s IHC-P protocol (datasheet A01647-3); the published early gastric tumor protocol provides a second approach (PMC9688572).
| Sample | Paraffin-embedded human breast cancer tissue; fixative not specified (datasheet A01647-3) |
| Fixation | Image fixative and duration unreported (datasheet A01647-3); 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 A01647-3); 20 min, 95–100 °C (standard) |
| Peroxidase block | 3% H2O2, 10 min, room temperature (standard) |
| Blocking | 10% goat serum (datasheet A01647-3) |
| Primary antibody | Rabbit anti-GNE, 2-5 μg/ml (datasheet A01647-3) |
| Primary incubation | Overnight at 4 °C (datasheet A01647-3) |
| Detection | HRP-conjugated secondary, DAB chromogen (datasheet A01647-3) |
| Counterstain | Hematoxylin, blue, dehydrate and mount (standard) |
| Expected result | GNE-positive staining in glandular cells of colon (HPA tissue IHC: High). HPA tissue profile: Cytoplasmic expression in most tissues. No signal in the no-primary control. |
💡Decision noteTry heat-mediated EDTA pH 8.0 retrieval first with the catalog antibody (datasheet A01647-3). The published protocol uses microwaved citric acid buffer (PMC9688572).
Section 2
What Is the Expected GNE Staining Pattern?
GNE should appear mainly in the cytoplasm, consistent with its cytosolic location and lack of a transmembrane segment (UniProt Q9Y223; HPA: cytoplasmic expression in most tissues). Strong HPA tissue IHC staining occurs in selected glandular cells, lung macrophages and ciliated cells (HPA: High). Interpret these examples with caution: HPA rates its tissue IHC profile Approved but reports low consistency between antibody staining and RNA expression (HPA: reliability description).
| Strong cytoplasmic staining in colon or duodenal glandular cells, with little nuclear signal. | This fits the reported compartment and cell pattern (UniProt Q9Y223: cytosol; HPA: High in colon and duodenal glandular cells). Judge staining in the identified cells, rather than calling an entire section uniformly positive; adjacent cell populations need not share the glandular-cell score (HPA: cell-specific tissue IHC entries). |
| Predominant nuclear staining, or a sharp cell-surface outline without convincing cytoplasmic staining. | That distribution conflicts with the supported cytosolic location (UniProt Q9Y223; HPA ICC-IF: cytosol supported). Treat it as an uncertain IHC result and examine morphology and controls before assigning GNE positivity. Localized ciliary staining is a documented exception to a simple cytoplasm-only reading (HPA: High in fallopian-tube and nasopharyngeal ciliated cells). |
| Strong staining of adipocytes while glandular cells in a known-positive section remain unstained. | Adipocytes are reported as Not detected, whereas several glandular-cell populations are High (HPA: adipose tissue; colon, duodenum, gallbladder, prostate and rectum). The reversal raises concern for nonspecific antibody binding or endogenous chromogen activity; the HPA comparison alone cannot identify which cause applies. |
| Diffuse color across cells, stroma and empty areas, with poorly defined cellular boundaries. | The pattern cannot establish cytosolic GNE localization (UniProt Q9Y223; HPA: cytoplasmic tissue profile). In chromogenic IHC, broad background can arise from nonspecific antibody binding or residual endogenous detection activity (general IHC practice). Evaluate it against matched controls before scoring cells. |
| No convincing staining in colon or duodenal glandular cells. | These are useful positive-reference cell populations because HPA reports High staining in each (HPA: colon and duodenum). A blank result warrants a workflow check, but it does not alone prove that the specimen lacks GNE. HPA also reports low consistency between antibody staining and RNA expression, so RNA abundance is not a substitute for a slide control (HPA: reliability description). |
💡Expected GNE appearanceCall a result consistent with GNE when identifiable glandular cells or lung macrophages show clear cytoplasmic staining, potentially strong in the HPA High examples (UniProt Q9Y223; HPA: tissue IHC); isolated dominant nuclear, cell-surface or diffuse background signal is an uncertain positive, while ciliary signal has its own HPA precedent (HPA: ciliated cells).
| Compartment and topology | GNE is cytosolic and has no annotated transmembrane segment (UniProt Q9Y223). Score cellular cytoplasm separately from nuclei and tissue background; membrane-only signal lacks support from these location data. |
| Cell-specific tissue pattern | HPA reports High staining in several glandular-cell populations and lung macrophages, but Not detected in adipocytes and selected other cells (HPA: tissue IHC). Select comparison regions by identified cell type, not by tissue name alone. |
| Ciliary exception | High signal is reported at the cilia axoneme in fallopian-tube and nasopharyngeal ciliated cells; bronchial ciliated-cell tips are Low (HPA: tissue IHC). Assess those structures against their specific HPA pattern before treating all noncytoplasmic staining as artefact. |
| Isoforms and antibody scope | UniProt lists five GNE isoforms with differing reported tissue distributions (UniProt Q9Y223: isoforms 1–5). The supplied HPA antibody statuses do not identify recognized epitopes or establish isoform coverage (HPA: HPA007045 and HPA027258 validation entries). |
| Evidence strength | Both listed antibodies have Approved IHC status, while the overall tissue profile has low staining-to-RNA consistency (HPA: antibody statuses; reliability description). An Approved status supports use of the observed pattern as a reference, without making every tissue intensity definitive. |
| IF/ICC Q: What location should a separate IF/ICC guide expect? | A: Mainly cytosol; HPA marks cytosol as supported and lists ICC-IF images for A-431, U-251MG and U2OS (HPA: subcellular record). Both listed antibodies have Approved ICC status (HPA: antibody statuses). This location evidence supplies no IF/ICC protocol here. |
| Situation | Likely cause | Next action |
|---|---|---|
| A known-positive glandular-cell region has no chromogenic signal. | The slide may have a detection or section-processing problem; the absence conflicts with HPA High staining in colon and duodenal glandular cells (HPA: tissue IHC). | Verify tissue identity and cell morphology, then check the run's positive control and detection reagents (general IHC practice). Review the antibody's documented IHC-P conditions before changing retrieval or dilution; no GNE-specific fixation or retrieval effect is supplied. |
| Signal is mainly nuclear or forms a continuous cell-surface rim. | Those distributions do not match supported cytosolic GNE localization (UniProt Q9Y223; HPA: subcellular record). | Inspect a known-positive cytoplasmic reference and the negative control side by side (general IHC practice). Reassess scoring if the apparent rim comes from cell overlap or section geometry; preserve separately identified ciliary observations (HPA: ciliated-cell entries). |
| Adipocytes or other HPA Not detected cells stain strongly. | The cell-level result conflicts with HPA's adipocyte entry, although a discordant cell pattern alone cannot distinguish cross-reactivity from endogenous detection activity (HPA: adipocytes Not detected). | Confirm cell identity and compare an antibody-omission control for residual detection color (general IHC practice). If color appears only with primary antibody, reassess specificity using another validated reagent where available (HPA: two Approved IHC antibodies). |
| Color spreads across the section and obscures cellular boundaries. | Diffuse background can reflect nonspecific binding or endogenous detection activity in chromogenic IHC (general IHC practice); it is not the described cellular GNE pattern (HPA: cytoplasmic tissue profile). | Examine an antibody-omission control, blocking and washes, then adjust the general IHC workflow according to the detection system (general IHC practice). Score GNE only where cell boundaries and intracellular signal remain interpretable. |
| A low-staining region seems negative despite a positive control. | Several HPA cell entries are Low, including salivary-gland glandular cells and hippocampal neuronal cells (HPA: tissue IHC). A faint result in those cells is less decisive than a failed High reference. | Check the High reference first, then record the low region with its cell type and detection threshold (HPA: tissue IHC; general IHC scoring practice). Avoid converting a Low HPA entry into an expected strong positive. |
| Ciliary staining appears inconsistent with the cytosolic expectation. | HPA reports High axonemal staining in fallopian tube and nasopharynx, alongside a supported cytosolic ICC-IF location (HPA: tissue IHC; HPA: subcellular record). | Identify the ciliated cells and exact subcellular structure before scoring (general IHC practice). Report ciliary and cytoplasmic observations separately, using the tissue-specific HPA entries as context rather than assuming either pattern proves antibody specificity. |
Experiment evidence
IHC & IF images showing GNE staining
A01647-3 · IHCIHC analysis of GNE using anti-GNE antibody (A01647-3). GNE was detected in a paraffin-embedded section of human breast cancer tissue. Heat
A01647-3 · IHCIHC analysis of GNE using anti-GNE antibody (A01647-3). GNE was detected in a paraffin-embedded section of human prostate cancer tissue. Hea
HPA · Cerebral cortexHuman Protein Atlas IHC, Cerebral cortex. Source: https://www.proteinatlas.org/ENSG00000159921-GNE/tissue/cerebral+cortex#imid_6785696
HPA · ColonHuman Protein Atlas IHC, Colon. Source: https://www.proteinatlas.org/ENSG00000159921-GNE/tissue/colon#imid_6785622
HPA · LiverHuman Protein Atlas IHC, Liver. Source: https://www.proteinatlas.org/ENSG00000159921-GNE/tissue/liver#imid_6785631
HPA · KidneyHuman Protein Atlas IHC, Kidney. Source: https://www.proteinatlas.org/ENSG00000159921-GNE/tissue/kidney#imid_6785616
HPA · ICC-IF A-431Human Protein Atlas immunofluorescence, A-431, antibody HPA027258; green = GNE, blue = nucleus, red = microtubules.
HPA · ICC-IF A-431Human Protein Atlas immunofluorescence, A-431, antibody HPA027258; green = GNE, blue = nucleus, red = microtubules.
← swipe / scroll for more images →
Real IHC / IF data behind the staining-pattern expectations in this section.
Sample controls for GNE IHC & IF
🧪Run colon first and score glandular cells for GNE staining (HPA: Colon glandular cells, High). Use adipose tissue adipocytes as the negative comparator (HPA: Adipose tissue adipocytes, Not detected); on the colon slide, non-glandular cells can serve as an internal background comparator only if they are unstained, because their GNE status is not specified by the supplied HPA row (HPA: Colon glandular cells, High).
Positive control tissue: Colon (Glandular cells, HPA High)
Negative control tissue: Adipose tissue (HPA Not detected)
ICC-IF cell lines (HPA subcellular resource): HPA ICC-IF images show GNE in A-431, U-251MG, U2OS, with annotated localisation: Cytosol (supported) (HPA subcellular).
Technical controls: Include no-primary (secondary-only) and concentration-matched rabbit isotype controls for the rabbit primary (selected-SKU IHC caption: rabbit anti-GNE; standard IHC practice), plus GNE-knockout material or a cognate-peptide block, if available, as a biological specificity control (standard IHC practice). Block endogenous peroxidase before HRP–DAB detection and inspect colon glandular lumens for background that could complicate scoring (selected-SKU IHC caption: HRP–DAB; standard IHC practice).
⚠️Feasibility: No target-specific fixation window or fixation effect is reported, and the selected-SKU paraffin-section caption does not state the fixative (selected-SKU IHC caption: fixative unreported). The caption uses heat retrieval in EDTA at pH 8.0, but does not establish that GNE staining depends on that retrieval condition (selected-SKU IHC caption: EDTA retrieval, pH 8.0). The supplied evidence does not establish that frozen sections or IF are easier than paraffin IHC; evaluate cytosolic signal in IF against background if using that separate application (HPA subcellular: cytosol supported).
HPA tissue IHC evidence for GNE
Comprehensive Human Protein Atlas IHC scoring per tissue (reliability: Approved — Low consistency between antibody staining and RNA expression data.). 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 |
|---|---|---|---|---|
| Colon | Glandular cells | High | Protein (IHC) | HPA → |
| Duodenum | Glandular cells | High | Protein (IHC) | HPA → |
| Fallopian tube | Ciliated cells (cilia axoneme) | High | Protein (IHC) | HPA → |
| Gallbladder | Glandular cells | High | Protein (IHC) | HPA → |
| Lung | Macrophages | High | Protein (IHC) | HPA → |
Undetected expression · recommended negative controls
| Tissue | Cell type | Level | Evidence | Source |
|---|---|---|---|---|
| Adipose tissue | Adipocytes | Not detected | Protein (IHC) | HPA → |
| Caudate | Glial cells | Not detected | Protein (IHC) | HPA → |
| Cerebellum | Cells in granular layer | Not detected | Protein (IHC) | HPA → |
| Cervix | Squamous epithelial cells | Not detected | Protein (IHC) | HPA → |
| Ovary | Ovarian stroma cells | Not detected | Protein (IHC) | HPA → |
Section 3
Advanced GNE IHC Tips
Troubleshoot GNE staining in paraffin sections by checking retrieval, cytosolic localisation, cell type, controls and scoring before interpreting differences between samples.
Which retrieval conditions should I start with for GNE IHC?
Start with heat mediated retrieval in EDTA pH 8.0 for paraffin sections (datasheet A01647-3). The selected image used this retrieval before an overnight incubation at 4°C with 2 μg/ml antibody, so keep those conditions together when establishing a reference stain (datasheet A01647-3). If staining is weak, compare a modest change in heating duration on adjacent sections while keeping antibody concentration and detection constant (standard IHC practice). Include a section processed without primary antibody to distinguish newly exposed tissue background from GNE signal (standard IHC practice). Record retrieval conditions for every run because inconsistent heating can change apparent staining intensity (standard IHC practice).
How should I troubleshoot fixation related changes in GNE staining?
The selected GNE image documents a paraffin embedded section but does not state its fixative, so target specific fixation sensitivity is unknown (datasheet A01647-3). Record the fixative, fixation duration, tissue thickness and processing history for each specimen before comparing staining (standard IHC practice). If one batch stains weakly, test sections with different documented processing histories side by side using identical EDTA pH 8.0 retrieval and detection (datasheet A01647-3; standard IHC practice). Review tissue morphology and the staining of a concurrently processed reference section before adjusting antibody concentration (standard IHC practice). Do not attribute a difference to GNE expression until preparation differences have been assessed (standard IHC practice).
What staining pattern is plausible for GNE in tissue sections?
Prioritise cytoplasmic staining: GNE is assigned to the cytosol and has no transmembrane segment (UniProt Q9Y223), while tissue staining is described as cytoplasmic in most tissues (HPA tissue IHC). Compare signal within intact cells against the surrounding tissue rather than treating diffuse extracellular colour as an expected GNE pattern (UniProt Q9Y223 localisation; standard IHC practice). High staining in lung macrophages and colon glandular cells offers cell type references, although staining varies across tissues (HPA tissue IHC). If an unexpected nuclear or surface restricted pattern dominates, inspect morphology, counterstain and the no primary control, then verify with an independent antibody if available (standard IHC practice).
Could isoform coverage explain inconsistent GNE staining?
GNE has 5 annotated isoforms, so establish which sequence the antibody epitope recognises before treating staining intensity as total GNE abundance (UniProt Q9Y223). Isoform 1 is reported across multiple organs, whereas isoform 2 is mainly expressed in placenta and isoform 3 is reported at low levels in specified tissues (UniProt Q9Y223 tissue specificity). The supplied caption gives antibody concentration and retrieval but no epitope sequence or isoform coverage (datasheet A01647-3). Check the antibody's documented immunogen against isoform sequences, and use a second reagent with a mapped, distinct epitope where available (standard IHC practice). Keep retrieval and detection matched when comparing reagents (standard IHC practice).
How can IF help assess an ambiguous GNE IHC pattern?
Use IF as a separate localisation check and retain the established paraffin IHC conditions as the chromogenic reference (datasheet A01647-3). Multiplex GNE with a marker for the expected cell type, such as macrophages when investigating the high lung macrophage pattern, and score overlap within individual cells (HPA tissue IHC; standard IF practice). Choose a fluorophore whose emission can be separated from the specimen's autofluorescence, and include single stain and no primary controls (standard IF practice). Because GNE is cytosolic and has no transmembrane segment, permeabilise fixed cells sufficiently to expose its intracellular epitope when performing ICC/IF (UniProt Q9Y223 localisation and topology; standard IF practice). Interpret IF using its own validated preparation conditions (standard IF practice).
How do I reduce diffuse or misleading GNE DAB staining?
The selected paraffin image used 10% goat serum blocking, 2 μg/ml primary antibody overnight at 4°C, and a peroxidase linked secondary before DAB development (datasheet A01647-3). Use a no primary section to reveal secondary reagent binding and tissue derived colour, then review washing, blocking and antibody concentration if background persists (standard IHC practice). Block endogenous peroxidase before HRP and DAB detection, and compare sections developed for the same duration (standard IHC practice). Check whether colour follows tissue edges, damaged areas or extracellular material rather than intact cytoplasm, the expected GNE compartment (UniProt Q9Y223 localisation; standard IHC practice). Keep counterstaining consistent across comparisons (standard IHC practice).
How should I quantify GNE IHC across samples? ⚠ ANSWER MARKED FOR VERIFICATION
Define the cell population and compartment before scoring, because cytosolic GNE signal can be obscured by changes in tissue composition (UniProt Q9Y223 localisation; standard IHC practice). For intact cells, report an H-score or the percentage of cytoplasm positive cells with a prespecified intensity threshold; for a dispersed population, report positive cells per mm² of evaluable tissue (standard IHC practice). Normalise counts to the relevant cell population or viable tissue area, and exclude folds, necrosis and missing tissue (standard IHC practice). Keep retrieval, exposure to DAB, counterstain and scoring thresholds matched across slides (standard IHC practice). Report cell types separately when their staining differs (HPA tissue IHC; standard IHC practice).
When is a GNE positive IHC result convincing?
A convincing result shows reproducible staining in intact cytoplasm, consistent with GNE's cytosolic assignment and the tissue IHC profile (UniProt Q9Y223 localisation; HPA tissue IHC). Check the labelled cell type: high signal is reported in lung macrophages and several glandular cell populations, while adipocytes are reported as undetected (HPA tissue IHC). Treat dominant nuclear colour, edge accentuation, necrotic staining or signal in a no primary control as reasons to investigate artefact (UniProt Q9Y223 localisation; standard IHC practice). For HRP and DAB, assess endogenous peroxidase and detection background before calling brown deposits GNE positive (standard IHC practice). Interpret discordance cautiously because the tissue IHC profile has low consistency with RNA expression data (HPA tissue IHC).
Boster reagents
Best GNE / Bifunctional UDP-N-acetylglucosamine 2-epimerase/N-acetylmannosamine kinase IHC Antibodies
The catalog lists an IHC antibody with paraffin-section images and a separate human IF/ICC antibody without an IF image (A01647-3 IHC captions; M01647 applications and image list).
Real IHC data
Anti-GNE Antibody ®
Cat # A01647-3
A01647-3 has IHC images from paraffin-embedded human breast and prostate cancer sections; its catalog reactivity lists human, mouse, and rat (A01647-3 IHC captions; catalog reactivity). M01647 lists human IF/ICC use, but supplies no IF image (M01647 applications, reactivity, and image list).
Which to pick: Choose A01647-3 for chromogenic IHC on paraffin sections: its captions show that use, but do not report the fixative (A01647-3 IHC captions). Choose M01647 for human IF/ICC because it is a rabbit monoclonal listed for those applications; no IF image is supplied (M01647 catalog). For mouse or rat work, A01647-3 lists those species as reactive, but its supplied IHC images show human tissue only (A01647-3 catalog reactivity; IHC captions).
Each figure is that product's own IHC / IF validation image from its datasheet.
References
- UniProt Consortium. UniProt entry Q9Y223 (GLCNE_HUMAN, Bifunctional UDP-N-acetylglucosamine 2-epimerase/N-acetylmannosamine kinase).
- Human Protein Atlas. GNE tissue IHC expression (reliability: Approved).
- Human Protein Atlas. GNE subcellular location (ICC-IF): Mainly localized to the cytosol..
- Human Protein Atlas. GNE antibody validation summary (2 antibodies).
- Cell stress molecules in the skeletal muscle of GNE myopathy. BMC neurology 2013 — PMC3616993.
- UDP-N-acetylglucosamine 2-epimerase/N-acetylmannosamine kinase (GNE) binds to alpha-actinin 1: novel pathways in skeletal muscle?. PloS one 2008 — PMC2423482.
- Loss of GNE Predicts Lymph Node Metastasis in Early Gastric Cancer. Cells 2022 — PMC9688572.
- The BET PROTAC inhibitor GNE-987 displays anti-tumor effects by targeting super-enhancers regulated gene in osteosarcoma. BMC cancer 2024 — PMC11292958.
- PubMed PMID:10431835 — UniProt-cited evidence.
- PubMed PMID:10330343 — UniProt-cited evidence.
- PubMed PMID:14702039 — UniProt-cited evidence.
Immunohistochemistry protocol sheet for GNE (Bifunctional UDP-N-acetylglucosamine 2-epimerase/N-acetylmannosamine kinase). Expected localisation Cytoplasmic staining in most tissues (HPA tissue IHC). Antigen retrieval: EDTA pH 8.0 HIER, heat-mediated (datasheet A01647-3). Validated IHC antibody: A01647-3 at 2-5 μg/ml (the product's own IHC validation image is shown). Controls (HPA): positive Colon (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 A01647-3); 2. Fixation: Image fixative and duration unreported (datasheet A01647-3); 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 A01647-3); 20 min, 95–100 °C (standard); 6. Peroxidase block: 3% H2O2, 10 min , room temperature (standard); 7. Blocking: 10% goat serum (datasheet A01647-3); 8. Primary antibody: Rabbit anti-GNE, 2-5 μg/ml (datasheet A01647-3); 9. Primary incubation: Overnight at 4 °C (datasheet A01647-3). Watch for: Fixation: Keep fixation consistent across paraffin sections (standard IHC practice; not target-specific); Caveat: Staining has low consistency with RNA expression (HPA tissue IHC); Isoform / epitope: 5 isoforms; epitope coverage is unspecified (UniProt); Regulation: Expression varies by tissue (UniProt). Evidence: UniProt Q9Y223, HPA tissue IHC · Approved, HPA ICC-IF · Mainly localized to the cytosol., Datasheet A01647-3, PMC9688572. QR code links to https://www.bosterbio.com/bosterbio-gene-info-cards/GNE/immunohistochemistry-ihc-guide.