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GLB1 / Beta-galactosidase · IHC design guide
Design Immunohistochemistry for GLB1
GLB1 tissue IHC commonly shows granular cytoplasmic staining, with strong staining in lung macrophages (HPA tissue IHC). For paraffin sections, the catalog antibody M01829-3 has a documented 1:50 IHC workflow; assess staining by cell type with appropriate controls (datasheet: M01829-3; standard IHC practice).
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 staining in tissue sections (HPA tissue IHC) | |
| Staining pattern | Many cell types show granular cytoplasmic staining (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 sections (standard IHC practice; not target-specific) | |
| Caveat | Lung macrophages stain strongly and may dominate the signal (HPA tissue IHC) | |
| Regulation | Low tissue specificity; no regulator established (HPA tissue IHC) | |
| Isoform / epitope | 3 isoforms; mature chain starts at residue 29, so check the epitope (UniProt) |
Section 1
Recommended GLB1 IHC & IF Protocols
Compare the catalog antibody’s IHC-P protocol with published GLB1 staining of mouse bone and skeletal muscle (PMC12764366) and prostate tissue microarrays (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 heat-mediated EDTA pH 8.0 retrieval (datasheet: M01829-3); use Tris-EDTA pH 9 when following the mouse tissue protocol (PMC12764366).
Section 2
What Is the Expected GLB1 Staining Pattern?
GLB1 is a lysosomal protein; UniProt also describes perinuclear cytoplasmic localization with a note that this pool is not lysosomal (UniProt P16278). In tissue IHC, expect often granular cytoplasmic staining, including strong staining in liver hepatocytes and lung macrophages (HPA tissue IHC). GLB1 has no transmembrane segment (UniProt P16278 topology). HPA rates its tissue profile Enhanced, with medium consistency between antibody staining and RNA expression (HPA tissue IHC).
| Granular cytoplasmic staining in hepatocytes or lung macrophages, with cellular outlines remaining interpretable. | This fits the reported pattern and High staining in those cells (HPA tissue IHC). Evaluate intensity within the named cell population; a dark region alone does not identify which cells stained. |
| Predominantly nuclear, surface-restricted, or uniformly extracellular chromogen. | Those compartments do not match the reported cytoplasmic pattern (HPA tissue IHC) or GLB1's lack of a transmembrane segment (UniProt P16278 topology). Check morphology and controls before interpreting the signal as GLB1. |
| Strong signal in ovarian stroma or vaginal squamous epithelium. | HPA reports GLB1 as Not detected in those cell types (HPA tissue IHC). Consider cross-reactivity or endogenous detection activity, especially if a control without primary antibody also develops color; assess the specific cells rather than the tissue as a whole. |
| Diffuse color across cells and surrounding tissue obscures granules. | The expected tissue pattern is often granular and cytoplasmic (HPA tissue IHC). Widespread haze is difficult to score and can reflect nonspecific binding or chromogen background (general IHC practice); compare sections processed with and without primary antibody. |
| No staining in hepatocytes on a liver control section. | HPA reports High hepatocyte staining (HPA tissue IHC), so an absent control signal makes a negative study section hard to interpret. Check that the hepatocytes are present, then review retrieval, antibody incubation, and detection using the established IHC workflow (general IHC practice). |
💡Expected GLB1 appearanceCall a section positive when the relevant cells show discernible granular cytoplasmic color—for example, strong hepatocyte or lung macrophage staining (HPA tissue IHC); isolated nuclear, surface-restricted, or diffuse extracellular color is discordant with the reported pattern (HPA tissue IHC; UniProt P16278 topology).
| Tissue and cell selection | High signal is reported in appendix glandular cells, bronchial ciliated cell bodies, gallbladder glandular cells, hepatocytes, lung macrophages, seminal vesicle glandular cells, and Leydig cells (HPA tissue IHC). Use the named cells when judging a positive control. |
| Low and undetected populations | HPA reports Medium adipocyte staining, Low staining in several other named cell types, and Not detected staining in ovarian stroma and vaginal squamous epithelium (HPA tissue IHC). A weak or absent result depends on which cells were examined. |
| Antibody evidence | One listed antibody has Enhanced IHC validation and another has Supported IHC validation; the ICC-supported antibody has no listed IHC status (HPA antibodies). Keep the validation status tied to the antibody used rather than transferring it across assays. |
| Processing, glycosylation, and isoforms | UniProt lists a signal peptide, propeptide, mature chain, seven glycosylation sites, and three isoforms (UniProt P16278). Without an antibody epitope or isoform-specific validation here, these annotations do not predict which forms will stain in a section. |
| Antigen retrieval | Retrieval is a general paraffin-section workflow variable (general IHC practice). No supplied GLB1 evidence identifies a preferred retrieval condition or establishes a fixation-specific change in epitope access; compare conditions against the same positive tissue control. |
| IF/ICC pattern? | HPA reports mainly vesicular localization as Supported and additional Golgi localization as Uncertain in ICC-IF (HPA subcellular). This informs compartment interpretation; it does not establish an IHC retrieval setting or make Golgi staining a required positive result. |
| Situation | Likely cause | Next action |
|---|---|---|
| Positive tissue control is blank. | A technical failure is possible because hepatocytes and lung macrophages are reported High (HPA tissue IHC); a blank section alone cannot identify which workflow step failed. | Confirm the expected cells on the section, then check the validated antibody's IHC conditions and the retrieval, detection, and counterstain steps (general IHC practice). |
| Color fills nuclei or outlines cell surfaces. | The location conflicts with the reported granular cytoplasmic pattern (HPA tissue IHC) and no transmembrane segment is annotated (UniProt P16278 topology). | Inspect cell boundaries at higher magnification and compare with the primary-omitted control; treat compartment-discordant color as unconfirmed (general IHC practice). |
| Ovarian stromal or vaginal squamous cells stain strongly. | Those cell types are reported Not detected (HPA tissue IHC); cross-reactivity or endogenous detection activity is possible. | Verify cell identity and run a control without primary antibody; if color persists, address endogenous detection activity within the chromogenic workflow (general IHC practice). |
| Granules are hidden by diffuse background. | Nonspecific binding or excessive chromogen development can reduce contrast (general IHC practice); HPA describes an often granular cytoplasmic pattern (HPA tissue IHC). | Compare the primary-omitted control, review blocking and antibody concentration, and shorten chromogen development if the established workflow permits (general IHC practice). |
| A low-expression cell population appears negative. | HPA lists Low staining in, for example, pancreatic exocrine glandular cells and cerebral cortical endothelial cells (HPA tissue IHC). Absence of obvious color there is less informative than a blank High control. | Score the identified cell type and confirm the run on High-staining cells before interpreting a negative result (HPA tissue IHC; general IHC practice). |
| IF/ICC shows vesicles plus a possible Golgi signal. | Vesicular localization is Supported, while additional Golgi localization is Uncertain (HPA subcellular). | Report the vesicular finding separately from any tentative Golgi assignment; assess IF/ICC controls in its dedicated workflow (HPA subcellular; general IF practice). |
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 liver first: hepatocytes should stain (HPA: High in hepatocytes). Use ovarian stroma as the negative tissue (HPA: Not detected in ovarian stroma cells); on the liver slide, verified internal negative cells should retain counterstain without specific DAB signal, but the HPA row does not establish which nonhepatocyte cells are negative.
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 no-primary (secondary-only) and rabbit IgG isotype controls (caption: rabbit anti-GLB1 antibody), plus GLB1-knockout tissue as a biological negative where available. Check liver sections for endogenous peroxidase and biotin signal before interpreting DAB staining (standard IHC practice).
⚠️Feasibility: The selected-SKU tissue-IHC caption reports heat retrieval in EDTA at pH 8.0 for a paraffin section, but its fixative is unreported; a target-specific fixation window and retrieval dependency are unreported (M01829-3 tissue-IHC caption). The supplied evidence does not establish whether frozen sections or IF are easier than paraffin IHC. Endogenous liver peroxidase or biotin can complicate chromogenic interpretation (standard IHC practice).
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
Troubleshoot GLB1 staining in paraffin sections by checking retrieval, tissue preservation, cellular pattern, and controls before assigning biological meaning.
What should I change if GLB1 staining is weak after antigen retrieval?
Start with heat-mediated retrieval in EDTA at pH 8.0 for paraffin sections (datasheet M01829-3). The matched colon cancer image used this retrieval before 1:50 primary incubation overnight at 4°C, but does not report heating time (caption M01829-3). If staining is weak, compare heating durations around 10–20 minutes on serial sections while keeping the buffer and pH fixed (standard IHC practice). If signal remains weak, trial citrate at pH 6.0 as a fallback and compare morphology and background with the EDTA condition (standard IHC practice). Keep detection and DAB development consistent across the comparison (standard IHC practice).
Could fixation explain inconsistent GLB1 staining between paraffin blocks?
The paraffin-section caption does not state a fixative, so GLB1-specific fixation sensitivity is unknown (caption M01829-3). Record the fixative, fixation duration, processing schedule, and section thickness before comparing blocks (standard IHC practice). For newly collected matched samples, a consistent 10% neutral-buffered formalin workflow allows fixation duration to be assessed without changing several variables together (standard IHC practice). If a block stains weakly, compare tissue preservation and retrieval with a known-positive control before attributing the result to the target (standard IHC practice). GLB1 has 7 annotated glycosylation sites, but the supplied evidence does not establish a fixation effect from them (UniProt P16278).
Should GLB1 appear diffuse, granular, or confined to lysosomes in IHC?
Expect predominantly cytoplasmic staining with a granular pattern in tissue sections (HPA tissue IHC profile). GLB1 is annotated in lysosomes and in a perinuclear cytoplasmic pool that is described as outside lysosomes (UniProt P16278 localisation). Vesicular localisation is supported by cell imaging, while the additional Golgi assignment is uncertain (HPA subcellular). Interpret a perinuclear or punctate DAB pattern alongside cell morphology, because chromogenic sections cannot by themselves establish overlap with a particular organelle (standard IHC practice). GLB1 has no annotated transmembrane segment, so an exclusively crisp plasma-membrane outline warrants scrutiny with controls and another readout (UniProt P16278 topology; standard IHC practice).
Can this IHC stain distinguish GLB1 isoforms or processing states?
GLB1 has 3 annotated isoforms, so an antibody signal should not automatically be assigned to one splice form (UniProt P16278 isoforms). The annotated precursor contains a signal sequence at residues 1–23, a propeptide at 24–28, and a beta-galactosidase chain at 29–677 (UniProt P16278 processing). The supplied product caption does not identify the antibody epitope or establish isoform-specific recognition (caption M01829-3). Check documented epitope mapping against each isoform before making isoform claims, and use an independently mapped antibody if that distinction is essential (standard IHC validation practice). Tissue DAB pattern alone cannot identify which processing state carries the detected epitope (standard IHC interpretation practice).
How can multiplex IF help check the GLB1 IHC pattern?
Use IF as a separate cross-check of the chromogenic pattern, with a marker for the expected cell population, such as CD68 when assessing lung macrophages (HPA: High in lung macrophages; standard IF practice). Select a spectrally separated, preferably far-red fluorophore and inspect unstained tissue for autofluorescence before interpreting puncta (standard IF practice). GLB1 is intracellular and has no annotated transmembrane segment, so test mild permeabilisation to expose the relevant epitope while preserving vesicles (UniProt P16278 topology and localisation; standard IF practice). For example, compare 0.1% detergent permeabilisation with a gentler condition using matched controls (standard IF practice). Vesicular IF signal supports spatial comparison, but the Golgi assignment remains uncertain (HPA subcellular).
How do I reduce granular or diffuse background in GLB1 DAB sections?
First compare a no-primary section and a secondary-only section with the stained section to locate detection-related background (standard IHC practice). Include a peroxidase block, such as 3% hydrogen peroxide for 10 minutes, before HRP detection, and keep DAB development time consistent (standard IHC practice). The matched image used 10% goat serum blocking and a 1:50 primary dilution overnight at 4°C (caption M01829-3). If background persists, titrate the primary and strengthen washing while checking that the granular cytoplasmic pattern remains visible in a positive control (standard IHC practice; HPA tissue IHC profile). Evaluate pigmented or damaged regions separately from intact cells (standard IHC practice).
What is a defensible way to score GLB1 chromogenic staining? ⚠ ANSWER MARKED FOR VERIFICATION
Define the cell population and viable tissue area before scoring, because GLB1 expression varies by cell type within tissues (HPA tissue IHC). For intensity scoring, use an H-score of 0–300, calculated as 1× percent weak plus 2× percent moderate plus 3× percent strong cells (standard IHC scoring practice). Report the percent positive cells alongside the H-score so a small bright population does not mask a broad weak signal (standard IHC scoring practice). For infiltrating populations, cells per mm² of viable tissue can be more informative than whole-section intensity (standard IHC quantification practice). Apply the same threshold and normalise each result to the relevant cell population or viable area across samples (standard IHC practice).
How can I distinguish true GLB1 positivity from staining artefact?
Look for cytoplasmic granular or perinuclear staining in intact cells, consistent with tissue IHC and annotated GLB1 localisation (HPA tissue IHC profile; UniProt P16278 localisation). Check cell identity: lung macrophages and liver hepatocytes are reported as High, whereas ovarian stroma cells are reported as Not detected (HPA tissue IHC). Staining confined to section edges, folds, or necrotic debris warrants comparison with intact regions and control sections (standard IHC practice). An exclusively sharp plasma-membrane pattern merits re-evaluation because GLB1 has no annotated transmembrane segment (UniProt P16278 topology). Endogenous beta-galactosidase activity is distinct from antibody-based HRP/DAB detection, so DAB positivity alone does not demonstrate enzyme activity (UniProt P16278 function; standard IHC practice).
Boster reagents
Best GLB1 / Beta-galactosidase IHC Antibodies
Anti-GLB1 IHC images cover human paraffin sections and mouse and rat tissues (catalog IHC captions); IF imaging covers CACO-2 cells (A01829-2 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 shows IHC staining in human colon cancer paraffin sections and mouse and rat kidney; A01829-2 shows IHC staining in human breast and lung cancer paraffin sections and IF staining in CACO-2 cells (respective image captions). M01829-4 shows IHC staining in mouse and rat liver, with human reactivity and IF also listed in its catalog entry (M01829-4 IHC captions; catalog applications and reactivity).
Which to pick: For tissue IHC across species, choose rabbit monoclonal M01829-3: its captions show human colon cancer and mouse and rat kidney paraffin sections stained at 1:50 after EDTA pH 8.0 retrieval (M01829-3 IHC captions; catalog clone). For IF/ICC, choose A01829-2: both applications are listed, and its CACO-2 IF image used 5 μg/mL (A01829-2 catalog applications; IF caption). M01829-4 is another cross-species IHC option with mouse and rat liver images and listed human reactivity; the fixative is unreported in all three antibodies’ IHC captions (M01829-4 IHC captions and catalog reactivity; A01829-2 and 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 staining in tissue sections (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 sections (standard IHC practice; not target-specific); Caveat: Lung macrophages stain strongly and may dominate the signal (HPA tissue IHC); Isoform / epitope: 3 isoforms; mature chain starts at residue 29 , so check the epitope (UniProt); Regulation: Low tissue specificity; no regulator established (HPA tissue IHC). Evidence: UniProt P16278, HPA tissue IHC · Enhanced, HPA ICC-IF · Mainly localized to vesicles. In addition localized to the Golgi…, Datasheet M01829-3, PMC12764366, PMC5325224. QR code links to https://www.bosterbio.com/bosterbio-gene-info-cards/GLB1/immunohistochemistry-ihc-guide.