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GLB1 / Beta-galactosidase · IHC design guide
Design Immunohistochemistry for GLB1
Plan chromogenic GLB1 IHC in paraffin sections using the observed granular cytoplasmic pattern (HPA tissue IHC). Liver hepatocytes provide a high-staining reference, while lung macrophages warrant separate scoring (HPA tissue IHC).
Evidence assembled Oct 2026 · For research use; verify linked source records and product datasheet before use
GLB1 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 tissue (HPA tissue IHC) | |
| Staining pattern | Widespread cytoplasmic staining, often granular (HPA tissue IHC) | |
| Antigen retrieval | EDTA pH 8.0 HIER, heat-mediated (datasheet M01829-3) | |
| Positive control | Appendix+4 more · see all | |
| Negative control | Ovary+1 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 | Lung macrophages stain strongly; score by cell type (HPA tissue IHC) | |
| Regulation | No specific staining regulator reported (UniProt) | |
| Isoform / epitope | 3 isoforms; signal peptide and propeptide are cleaved (UniProt) |
Section 1
Recommended GLB1 IHC & IF Protocols
The catalog antibody protocol uses heat-mediated EDTA pH 8.0 retrieval (datasheet M01829-3). One published GLB1 prostate tissue microarray protocol uses citrate retrieval (PMC5325224).
| Sample | Paraffin-embedded human colon cancer tissue; fixative not specified (datasheet M01829-3) |
| Fixation | Image fixative and duration unreported (datasheet M01829-3); 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 M01829-3); 20 min, 95–100 °C (standard) |
| Peroxidase block | 3% H2O2, 10 min, room temperature (standard) |
| Blocking | 10% goat serum (datasheet M01829-3) |
| Primary antibody | Rabbit monoclonal (clone 25G11) anti-GLB1, 1:50 (datasheet M01829-3) |
| Primary incubation | Overnight at 4 °C (datasheet M01829-3) |
| Detection | HRP-conjugated secondary, DAB chromogen (datasheet M01829-3) |
| Counterstain | Hematoxylin, blue, dehydrate and mount (standard) |
| Expected result | GLB1-positive staining in glandular cells of appendix (HPA tissue IHC: High). HPA tissue profile: Ubiquitous cytoplasmic expression often with a granular pattern. No signal in the no-primary control. |
💡Decision noteStart with EDTA pH 8.0 for the catalog antibody (datasheet M01829-3); consider citrate retrieval for the published tissue microarray approach (PMC5325224).
Section 2
What Is the Expected GLB1 Staining Pattern?
GLB1 is a lysosomal enzyme with no transmembrane segment; UniProt also records a perinuclear cytoplasmic localization (UniProt P16278). In paraffin-section IHC, expect granular cytoplasmic staining across many cell types, including strongly stained lung macrophages and liver hepatocytes (HPA: ubiquitous cytoplasmic, often granular; High in both). HPA rates tissue IHC reliability Enhanced, while noting medium consistency between antibody staining and RNA expression (HPA: tissue IHC).
| Granular cytoplasmic staining is strong in lung macrophages or liver hepatocytes (HPA: High in both). | This matches the reported tissue and compartment pattern (HPA: ubiquitous cytoplasmic, often granular). Interpret the stain within the identified cell population; nearby cells need not have the same intensity. |
| Signal appears predominantly nuclear, or as a continuous outline of the cell surface. | Neither pattern matches the reported vesicular and cytoplasmic localization or the absence of a transmembrane segment (HPA: subcellular; UniProt P16278 topology). Check morphology, detection background and primary-antibody controls before assigning GLB1. |
| Strong signal appears in ovarian stroma or vaginal squamous epithelium (HPA: Not detected in those cells). | That conflicts with the reported IHC pattern (HPA: tissue IHC). Consider cross-reactivity or detection activity, while recognizing that an HPA ‘Not detected’ call does not prove every specimen is biologically negative. |
| Chromogen spreads evenly across cells and extracellular areas, obscuring granules. | A diffuse field is hard to reconcile with the reported granular cytoplasmic pattern (HPA: tissue IHC). Assess section-wide background and control slides before scoring faint cellular color as GLB1. |
| Little or no cellular signal appears in lung macrophages or liver hepatocytes (HPA: High in both). | The run lacks a useful expected-positive reference. Check whether these cells are present, then review antibody dilution, retrieval and detection as general IHC variables; one failed stain does not establish absent GLB1. |
💡Expected GLB1 appearanceCall a positive result when identifiable lung macrophages or liver hepatocytes show strong granular cytoplasmic color (HPA: High; ubiquitous cytoplasmic, often granular); isolated nuclear color, membrane outlines or diffuse section-wide color warrant control review (HPA: subcellular; UniProt P16278 topology).
| Cellular compartment and tissue choice (HPA: tissue IHC and subcellular; UniProt P16278). | HPA reports cytoplasmic granules in tissue and vesicles in ICC-IF; UniProt also lists lysosomes and a perinuclear cytoplasmic localization. Score the cell and compartment together; these records do not establish a single exclusive pattern. |
| Strength of the tissue reference (HPA: tissue IHC). | HPA rates lung macrophages and liver hepatocytes High, adipocytes Medium, and several listed cell populations Low or Not detected. A low-staining population is a weaker check of a negative run than a reported High population. |
| Antibody evidence (HPA: antibody validation). | HPA lists IHC Enhanced for HPA069503 and IHC Supported for CAB008382; ICC Supported is listed separately for HPA040610. Validation applies to the listed antibody and application, so do not transfer an ICC rating to paraffin IHC. |
| Processing and isoforms (UniProt P16278). | UniProt records a signal peptide, propeptide, mature chain, seven glycosylation sites and three isoforms. Without an epitope map or antibody-specific data, their effects on staining intensity, retrieval and isoform detection remain undetermined. |
| IF/ICC Q&A: what should an IF signal look like? (HPA: subcellular ICC-IF). | Mainly vesicular staining is supported; an additional Golgi location is uncertain (HPA: subcellular). Use the separate IF/ICC guide for that application. The ICC observation does not specify a paraffin-section IF protocol. |
| Situation | Likely cause | Next action |
|---|---|---|
| Expected-positive cells are unstained (HPA: lung macrophages and liver hepatocytes, High). | An inconclusive run can reflect cell selection or a general IHC workflow problem; the supplied sources give no GLB1-specific fixation sensitivity. | Confirm cell identity on the section and inspect a known-positive control. Review the validated IHC antibody instructions, retrieval, dilution and detection as general IHC checks. |
| The whole section has diffuse chromogen instead of discernible cytoplasmic granules (HPA: tissue IHC). | General IHC possibilities include nonspecific reagent binding, inadequate washing or endogenous detection activity; none is established here as a GLB1-specific effect. | Compare primary-antibody omission and detection controls. Review blocking, washing and the detection-system controls before interpreting weak diffuse color. |
| Nuclei or cell borders dominate the signal (HPA: subcellular; UniProt P16278 topology). | That distribution conflicts with reported vesicular/cytoplasmic localization and no transmembrane segment; its specific cause cannot be assigned from appearance alone. | Compare with morphology and appropriate controls, then review antibody specificity and chromogen deposition. Score GLB1 only where identifiable cytoplasmic staining is supported. |
| Ovarian stromal or vaginal squamous cells stain strongly (HPA: Not detected in those cells). | Possible cross-reactivity or endogenous detection activity requires testing; HPA's tissue result alone cannot identify the cause. | Check a primary-antibody omission control and the antibody's IHC validation. Compare the suspect cells with a reported High population on a suitable section (HPA: tissue IHC). |
| A low-staining population appears negative while the control stains (HPA: several populations Low). | A faint expected signal may fall below visual scoring in that run; HPA levels are observations, not a universal intensity threshold. | Use a reported High population as the run control, document the scoring threshold and avoid calling the low-staining population a technical failure solely from its absence. |
| IF/ICC shows vesicles plus apparent Golgi signal (HPA: subcellular ICC-IF). | Vesicles are the supported main location; the additional Golgi location is uncertain (HPA: subcellular). This does not validate the same pattern in paraffin IHC. | Interpret the IF image against its own controls and the separate IF/ICC guide. Keep the uncertain Golgi assignment separate from the IHC tissue score. |
Experiment evidence
IHC & IF images showing GLB1 staining
M01829-3 · IHCIHC analysis of GLB1 using anti-GLB1 antibody (M01829-3). GLB1 was detected in a paraffin-embedded section of human colon cancer tissue. Hea
M01829-3 · IHCIHC analysis of GLB1 using anti-GLB1 antibody (M01829-3). GLB1 was detected in a paraffin-embedded section of mouse kidney tissue. Heat medi
A01829-2 · IHCIHC analysis of GLB1/Beta-galactosidase using anti-GLB1/Beta-galactosidase antibody (A01829-2). GLB1/Beta-galactosidase was detected in a pa
A01829-2 · IHCIHC analysis of GLB1/Beta-galactosidase using anti-GLB1/Beta-galactosidase antibody (A01829-2). GLB1/Beta-galactosidase was detected in a pa
A01829-2 · IFIF analysis of GLB1/Beta-galactosidase using anti-GLB1/Beta-galactosidase antibody (A01829-2). GLB1/Beta-galactosidase was detected in an im
M01829-4 · IHCMouse liver was stained with anti-β-Galactosidase rabbit antibody
M01829-4 · IHCRat liver was stained with anti-β-Galactosidase rabbit antibody
HPA · Cerebral cortexHuman Protein Atlas IHC, Cerebral cortex. Source: https://www.proteinatlas.org/ENSG00000170266-GLB1/tissue/cerebral+cortex#imid_19145799
HPA · Thyroid glandHuman Protein Atlas IHC, Thyroid gland. Source: https://www.proteinatlas.org/ENSG00000170266-GLB1/tissue/thyroid+gland#imid_19145735
HPA · ColonHuman Protein Atlas IHC, Colon. Source: https://www.proteinatlas.org/ENSG00000170266-GLB1/tissue/colon#imid_19145709
HPA · LiverHuman Protein Atlas IHC, Liver. Source: https://www.proteinatlas.org/ENSG00000170266-GLB1/tissue/liver#imid_19145726
HPA · ICC-IF A-431Human Protein Atlas immunofluorescence, A-431, antibody HPA040610; green = GLB1, blue = nucleus, red = microtubules.
HPA · ICC-IF A-431Human Protein Atlas immunofluorescence, A-431, antibody HPA040610; green = GLB1, blue = nucleus, red = microtubules.
← swipe / scroll for more images →
Real IHC / IF data behind the staining-pattern expectations in this section.
Sample controls for GLB1 IHC & IF
🧪Run lung first: macrophages should stain strongly (HPA: High in lung macrophages). Use ovarian stroma as the negative tissue (HPA: Not detected in ovarian stroma cells); on the lung slide, assess nonmacrophage cells for background without assuming they are GLB1-negative (HPA: lung result specifies macrophages only).
Positive control tissue: Appendix (Glandular cells, HPA High)
Negative control tissue: Ovary (HPA Not detected)
ICC-IF cell lines (HPA subcellular resource): HPA ICC-IF images show GLB1 in A-431, U-251MG, U2OS, with annotated localisation: Vesicles (supported) (HPA subcellular).
Technical controls: Include a no-primary, secondary-only control, a rabbit IgG control matched to the primary antibody’s format, and GLB1-knockout tissue or cells as a biological negative (selected caption: rabbit primary; standard IHC controls). Quench endogenous peroxidase and check macrophage pigment before interpreting DAB signal in lung (standard chromogenic IHC practice).
⚠️Feasibility: A target-specific fixation window and fixation effect are unreported, and the selected paraffin-section caption does not state its fixative (selected SKU M01829-3 caption). The reported IHC example uses heat retrieval in EDTA at pH 8.0, followed by DAB detection; it does not establish that retrieval is universally required (selected SKU M01829-3 caption). Frozen-section performance is unreported, so it cannot be called easier; ICC-IF images support vesicular localization in the listed cell lines, but do not establish easier tissue IF (HPA: subcellular ICC-IF).
HPA tissue IHC evidence for GLB1
Comprehensive Human Protein Atlas IHC scoring per tissue (reliability: Enhanced — Medium 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 |
|---|---|---|---|---|
| Appendix | Glandular cells | High | Protein (IHC) | HPA → |
| Bronchus | Ciliated cells (cell body) | High | Protein (IHC) | HPA → |
| Gallbladder | Glandular cells | High | Protein (IHC) | HPA → |
| Liver | Hepatocytes | High | Protein (IHC) | HPA → |
| Lung | Macrophages | High | Protein (IHC) | HPA → |
Section 3
Advanced GLB1 IHC Tips
Use the IHC-validated antibody’s paraffin-section conditions as the starting point, then judge GLB1 staining by cell type, compartment, and controls.
Which antigen retrieval should I start with for GLB1 paraffin-section IHC?
Start with heat-mediated antigen retrieval in EDTA at pH 8.0 (datasheet M01829-3). The selected paraffin-section image used this retrieval before 1:50 primary antibody overnight at 4°C, but its caption does not report retrieval duration or fixative (datasheet M01829-3). Keep heating and cooling conditions identical across a comparison series, and include a known positive section so weak staining can be distinguished from a processing failure (general IHC practice; HPA: High in liver hepatocytes). If staining remains weak, test another retrieval condition on adjacent sections while holding antibody concentration and detection constant; assess whether granular cytoplasmic signal improves without added background (general IHC practice; HPA tissue IHC profile).
How should I control fixation when GLB1 staining varies between paraffin sections?
Target-specific sensitivity to fixation is unknown because the selected paraffin-section caption does not state a fixative (datasheet M01829-3). For a new series, document fixative, time to fixation, duration, and section age, then process comparison specimens consistently; 10% neutral buffered formalin is a conventional starting condition for paraffin IHC (general IHC practice). Run a known positive control alongside each batch and use the same EDTA pH 8.0 retrieval to isolate fixation-related variation (HPA: High in liver hepatocytes; datasheet M01829-3). If signal differs, compare matched sections with controlled fixation histories before attributing the change to GLB1 biology; neither tissue staining patterns nor protein glycosylation establish a fixation effect (general IHC practice; UniProt P16278 glycosylation).
What GLB1 staining pattern should count as plausible in chromogenic IHC?
Expect predominantly granular cytoplasmic staining rather than a crisp membrane outline (HPA tissue IHC profile; UniProt P16278 topology: no transmembrane segment). GLB1 has lysosomal and perinuclear cytoplasmic annotations, while subcellular imaging supports vesicles and lists Golgi localisation as uncertain; a single brown punctum cannot distinguish these compartments (UniProt P16278 subcellular; HPA subcellular). Compare staining within the appropriate cells, such as lung macrophages or liver hepatocytes, against a negative reagent control and nearby tissue architecture (HPA: High in lung macrophages and liver hepatocytes; general IHC practice). Persistent nuclear-only or extracellular staining warrants review of section quality, secondary-antibody background, and morphology before assigning it to GLB1 (general IHC practice; HPA tissue IHC profile).
Could GLB1 processing or isoforms explain uneven IHC staining?
GLB1 has 3 annotated isoforms, a signal peptide at residues 1–23, a propeptide at 24–28, and a beta-galactosidase chain at 29–677 (UniProt P16278 processing and isoforms). Seven glycosylation sites are annotated, so epitope accessibility may depend on which region an antibody recognizes, but the supplied caption does not map this antibody’s epitope (UniProt P16278 glycosylation; datasheet M01829-3). Check the antibody’s immunogen or epitope documentation before interpreting a missing cell population as loss of every GLB1 isoform (general IHC practice; UniProt P16278 isoforms). Compare adjacent sections with an independently validated epitope or a suitable orthogonal assay, while keeping EDTA pH 8.0 retrieval constant (general IHC practice; datasheet M01829-3).
How can IF help assess a questionable GLB1 IHC pattern?
Use IF as a separate, independently validated check of compartment and cell identity; the selected antibody evidence here is paraffin-section chromogenic IHC (datasheet M01829-3). For lung, multiplex GLB1 with a macrophage marker such as CD68 and assess whether puncta fall within marker-positive cells, consistent with the reported high macrophage staining (HPA: High in lung macrophages; general IF practice). Choose a red or far-red GLB1 fluorophore after checking tissue autofluorescence, and include single-label controls to assess bleed-through (general IF practice). Select permeabilisation according to the documented epitope location: access to a luminal epitope requires membrane permeabilisation, while the supplied antibody caption does not specify its epitope (general IF practice; datasheet M01829-3).
What should I change when GLB1 DAB staining looks diffuse or nonspecific?
First compare a no-primary control with the stained section and examine whether brown signal follows tissue edges, damaged areas, or many unrelated compartments (general IHC practice). The selected image used 10% goat serum blocking, 1:50 primary antibody overnight at 4°C, and a peroxidase-linked secondary before DAB development (datasheet M01829-3). Include a peroxidase block and adjust washing, primary concentration, or DAB development one variable at a time; these are general chromogenic IHC controls, not GLB1-specific validation (general IHC practice). Retain a positive tissue control while troubleshooting, and prefer granular cytoplasmic signal over uniform haze when judging the result (HPA: High in liver hepatocytes; HPA tissue IHC profile).
How should I score GLB1 staining across samples with different cell mixtures? ⚠ ANSWER MARKED FOR VERIFICATION
Define the cell population and viable region before scoring because GLB1 has broad tissue expression and can be high in distinct cell types (HPA: low tissue specificity; HPA: High in lung macrophages and liver hepatocytes). For cell-based scoring, record the percentage positive and intensity from 0–3, then calculate an H-score from 0–300 using the sum of intensity multiplied by percentage at each intensity (general IHC practice). Alternatively, report positive-cell density per mm² of viable tissue when cell counts are the endpoint (general IHC practice). Normalise within the same annotated cell type or to its total cell count, and apply one threshold, imaging setup, and exclusion rule across batches (general IHC practice).
How do I distinguish true GLB1 positivity from staining artefacts?
A plausible positive combines granular cytoplasmic staining with the expected cell identity, such as a lung macrophage or liver hepatocyte (HPA tissue IHC profile; HPA: High in lung macrophages and liver hepatocytes). Treat nuclear-only staining, sharp edge accentuation, and signal confined to necrotic regions as suspect until controls and morphology support another explanation (general IHC practice; UniProt P16278 subcellular). Compare a no-primary control and a peroxidase-blocked section because endogenous peroxidase or detection-reagent background can produce DAB signal (general chromogenic IHC practice). GLB1 is a beta-galactosidase enzyme, but DAB in this workflow reports the peroxidase detection system rather than beta-galactosidase activity (UniProt P16278 function; datasheet M01829-3).
Boster reagents
Best GLB1 / Beta-galactosidase IHC Antibodies
Anti-GLB1 antibodies cover human cancer paraffin sections, mouse and rat kidney, and mouse and rat liver (catalog IHC captions); A01829-2 also has CACO-2 cell IF data (catalog IF caption).
Real IHC data
Anti-GLB1 Rabbit Monoclonal Antibody
Cat # M01829-3
Real IHC data
Anti-GLB1/Beta-galactosidase Antibody ®
Cat # A01829-2
Real IHC data
Anti-β-Galactosidase Rabbit Monoclonal Antibody
Cat # M01829-4
M01829-3 has IHC images from human colon cancer and mouse and rat kidney paraffin sections (M01829-3 IHC captions). A01829-2 has IHC images from human breast and lung cancer paraffin sections and IF data from CACO-2 cells (A01829-2 IHC and IF captions); M01829-4 has IHC images from mouse and rat liver (M01829-4 IHC captions).
Which to pick: For paraffin tissue IHC, consider rabbit monoclonal M01829-3 at 1:50, as shown with EDTA retrieval in its colon and kidney images; the captions do not report a fixative (M01829-3 IHC captions). For IF/ICC, choose A01829-2: its CACO-2 cell IF image uses 5 μg/mL, while its paraffin IHC images use 2 μg/mL after EDTA retrieval; the IHC captions do not report a fixative (A01829-2 IF and IHC captions). For cross-species IHC, M01829-4 lists human, mouse and rat reactivity and shows mouse and rat liver staining, although its captions give no processing details; M01829-3 also shows mouse and rat kidney paraffin sections (M01829-4 catalog and IHC captions; M01829-3 IHC captions).
Each figure is that product's own IHC / IF validation image from its datasheet.
References
- UniProt Consortium. UniProt entry P16278 (BGAL_HUMAN, Beta-galactosidase).
- Human Protein Atlas. GLB1 tissue IHC expression (reliability: Enhanced).
- Human Protein Atlas. GLB1 subcellular location (ICC-IF): Mainly localized to vesicles. In addition localized to the Golgi apparatus..
- Human Protein Atlas. GLB1 antibody validation summary (3 antibodies).
- Targeting cellular senescence in dystrophin(-/-)/utrophin(-/-)double knockout mice improves musculoskeletal health and increases lifespan. Pharmacological research 2025 — PMC12764366.
- Infection of a β-galactosidase-deficient mouse strain with Theiler's murine encephalomyelitis virus reveals limited immunological dysregulations in this lysosomal storage disease. Frontiers in immunology 2025 — PMC12014673.
- Persistence of senescent prostate cancer cells following prolonged neoadjuvant androgen deprivation therapy. PloS one 2017 — PMC5325224.
- Novel insights into pathomechanisms of retinal neuronal degeneration and reactive gliosis in a murine model of G(M1)-gangliosidosis. Scientific reports 2025 — PMC12350627.
- PubMed PMID:3143362 — UniProt-cited evidence.
- PubMed PMID:2511208 — UniProt-cited evidence.
- PubMed PMID:2111707 — UniProt-cited evidence.
Immunohistochemistry protocol sheet for GLB1 (Beta-galactosidase). Expected localisation Cytoplasmic in tissue (HPA tissue IHC). Antigen retrieval: EDTA pH 8.0 HIER, heat-mediated (datasheet M01829-3). Validated IHC antibody: M01829-3 at 1:50 (the product's own IHC validation image is shown). Controls (HPA): positive Appendix (Glandular cells); negative Ovary. IHC-P workflow on paraffin sections; fixative unspecified. Protocol steps: 1. Sample: Paraffin-embedded human colon cancer tissue; fixative not specified (datasheet M01829-3); 2. Fixation: Image fixative and duration unreported (datasheet M01829-3); 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 M01829-3); 20 min, 95–100 °C (standard); 6. Peroxidase block: 3% H2O2, 10 min , room temperature (standard); 7. Blocking: 10% goat serum (datasheet M01829-3); 8. Primary antibody: Rabbit monoclonal (clone 25G11) anti-GLB1, 1:50 (datasheet M01829-3); 9. Primary incubation: Overnight at 4 °C (datasheet M01829-3). Watch for: Fixation: Keep fixation consistent across paraffin sections. (standard IHC practice; not target-specific); Caveat: Lung macrophages stain strongly; score by cell type (HPA tissue IHC); Isoform / epitope: 3 isoforms; signal peptide and propeptide are cleaved (UniProt); Regulation: No specific staining regulator reported (UniProt). Evidence: UniProt P16278, HPA tissue IHC · Enhanced, HPA ICC-IF · Mainly localized to vesicles. In addition localized to the Golgi…, Datasheet M01829-3, PMC5325224. QR code links to https://www.bosterbio.com/bosterbio-gene-info-cards/GLB1/immunohistochemistry-ihc-guide.