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ARF1 / ADP-ribosylation factor 1 · IHC design guide
Design Immunohistochemistry for ARF1
Plan ARF1 paraffin IHC around the general cytoplasmic pattern reported in tissues (HPA tissue IHC). Use the high staining in colon glandular cells and undetected staining in ovarian stroma to help assess the result (HPA tissue IHC).
Evidence assembled Oct 2026 · For research use; verify linked source records and product datasheet before use
ARF1 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 (HPA tissue IHC); Golgi membrane (UniProt) | |
| Staining pattern | General cytoplasmic staining across tissue cell types (HPA tissue IHC) | |
| Antigen retrieval | EDTA pH 8.0 HIER, heat-mediated (datasheet M01279-1) | |
| Positive control | Adrenal gland+4 more · see all | |
| Negative control | Ovary |
Important caveats
Reasons your staining may differ from the expected pattern.
| Fixation | Keep fixation conditions consistent across sections (standard IHC practice; not target-specific) | |
| Caveat | Tissue staining reliability is uncertain (HPA tissue IHC) | |
| Regulation | No stimulus regulation annotated (UniProt) | |
| Isoform / epitope | No isoforms annotated; chain spans aa 2–181 (UniProt) |
Section 1
Recommended ARF1 IHC & IF Protocols
The catalog antibody protocol uses EDTA pH 8.0 heat retrieval (datasheet: M01279-1). Four published ARF1 IHC protocols below provide tissue-specific starting conditions (PMC5129974; PMC7778598; PMC4941279; PMC5295416).
| Sample | Paraffin-embedded human colon tissue; fixative not specified (datasheet M01279-1) |
| Fixation | Image fixative and duration unreported (datasheet M01279-1); 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 M01279-1); 20 min, 95–100 °C (standard) |
| Peroxidase block | 3% H2O2, 10 min, room temperature (standard) |
| Blocking | 10% goat serum (datasheet M01279-1) |
| Primary antibody | Rabbit monoclonal (clone GFA-1) anti-ARF1, 1:50 (datasheet M01279-1) |
| Primary incubation | Overnight at 4 °C (datasheet M01279-1) |
| Detection | HRP-conjugated secondary, DAB chromogen (datasheet M01279-1) |
| Counterstain | Hematoxylin, blue, dehydrate and mount (standard) |
| Expected result | ARF1-positive staining in glandular cells of adrenal gland (HPA tissue IHC: High). HPA tissue profile: General cytoplasmic expression. No signal in the no-primary control. |
💡Decision noteStart with EDTA pH 8.0 heat retrieval for the catalog antibody (datasheet: M01279-1); the breast tumor protocol reports heat retrieval with proprietary reagents (PMC4941279).
Section 2
What Is the Expected ARF1 Staining Pattern?
ARF1 should appear mainly cytoplasmic in tissue IHC, with strong staining reported in several glandular, respiratory epithelial, and neuronal cell populations (HPA: general cytoplasmic expression; High in listed cells). Golgi membrane association can produce local cytoplasmic enrichment, but ARF1 has no transmembrane segment (UniProt P84077 topology and localization). Interpret intensity cautiously: HPA rates the tissue staining evidence Uncertain because antibody staining and RNA expression show medium consistency (HPA: tissue reliability).
| Cytoplasmic staining in colon or duodenal glandular cells, bronchial respiratory epithelial cells, or cerebral cortical neurons. | This fits the reported IHC pattern; these populations are rated High (HPA: tissue IHC). Perinuclear enrichment is compatible with Golgi association, but a sharply defined Golgi pattern is not required for a positive tissue result (UniProt P84077 localization; HPA: general cytoplasmic expression). |
| Predominantly nuclear staining, especially when cytoplasm in a listed positive cell population is clear. | Treat this as a compartment mismatch and investigate artefact or nonspecific detection (HPA: general cytoplasmic expression; UniProt P84077 localization). ARF1 is reported at Golgi membranes and synaptic structures, not as a nuclear protein (UniProt P84077 localization). |
| Strong staining confined to ovarian stromal cells while a positive tissue gives little corresponding cytoplasmic signal. | Consider cross-reactivity or endogenous chromogenic activity (HPA: ovarian stromal cells Not detected; High in listed positive cells; general IHC practice). A single unexpected cell population does not establish ARF1 expression, particularly with Uncertain tissue reliability (HPA: tissue reliability). |
| Diffuse colour across cells and extracellular areas, obscuring the boundaries of expected positive cells. | This is more consistent with background than an interpretable ARF1 pattern (HPA: general cytoplasmic expression; general IHC practice). Compare the distribution with a no-primary control and the listed positive cells before assigning a staining score (general IHC practice; HPA: tissue IHC). |
| No cytoplasmic signal in an adequately preserved colon, duodenum, bronchus, or cerebral cortex section. | This conflicts with the reported High staining in the corresponding glandular, respiratory epithelial, or neuronal cells (HPA: tissue IHC). First check that the expected cells are present and that the IHC run worked; a blank slide alone cannot establish absence of ARF1 (general IHC practice). |
💡Expected ARF1 appearanceCall a result positive when cytoplasmic staining is clear in a reported High cell population, such as colon glandular cells; isolated nuclear or diffuse extracellular colour is suspect (HPA: tissue IHC; HPA: general cytoplasmic expression; general IHC practice).
| Subcellular location and topology (UniProt P84077) | ARF1 associates with Golgi membranes through a myristoylated N terminus and has no transmembrane segment (UniProt P84077 localization and topology). Cytoplasmic IHC staining can therefore include membrane-associated enrichment; a continuous cell-surface outline is not required (HPA: general cytoplasmic expression; UniProt P84077 localization). |
| Strength of tissue evidence (HPA: tissue reliability) | The tissue profile is rated Uncertain because antibody staining and RNA expression have medium consistency; CAB007742 is also rated Uncertain for IHC (HPA: tissue IHC; HPA: antibody validation). Use the reported High and Not detected populations as comparison points, not absolute acceptance criteria. |
| Choice of comparison cells (HPA: tissue IHC) | Reported High examples include adrenal and epididymal glandular cells and caudate neurons; endometrial glandular cells are Medium, and ovarian stromal cells are Not detected (HPA: tissue IHC). Score the named cell population within each section rather than assigning one intensity to an entire organ (general IHC practice). |
| IF/ICC: what pattern should be expected? (HPA: subcellular ICC-IF) | In the separate IF/ICC context, HPA approves cytosol as the main location and plasma membrane as an additional location (HPA: subcellular ICC-IF). That observation helps interpret localization, but it is not an IHC-P protocol or a promise that membrane staining will be conspicuous in paraffin sections. |
| Situation | Likely cause | Next action |
|---|---|---|
| A listed High tissue gives no signal (HPA: tissue IHC). | The expected cell population may be absent from the section, or the staining run may have failed (general IHC practice). | Confirm the relevant cells on the counterstained section, then inspect a run control and the catalog antibody's IHC-P instructions before interpreting the blank result (general IHC practice). |
| All compartments show weak, even colour (general IHC practice). | Nonspecific detection or inadequate background control can obscure the reported cytoplasmic distribution (general IHC practice; HPA: general cytoplasmic expression). | Compare a no-primary control; review blocking, washes, and detection conditions using the IHC-P workflow (general IHC practice). |
| Colour appears in a no-primary control (general IHC practice). | Endogenous detection activity or secondary-reagent background is possible (general IHC practice). | Use the control to identify the detection source, then apply the appropriate endogenous-activity block or adjust the detection reagents (general IHC practice). |
| Signal is chiefly nuclear (HPA: general cytoplasmic expression). | The compartment disagrees with reported ARF1 localization (UniProt P84077 localization; HPA: general cytoplasmic expression). | Check morphology and controls, and repeat with reviewed staining and detection conditions before scoring nuclear colour as ARF1 (general IHC practice). |
| Ovarian stromal cells stain strongly (HPA: ovarian stromal cells Not detected). | Cross-reactivity or endogenous chromogenic activity is possible; HPA's Not detected call is a comparator, not proof of biological absence (HPA: tissue IHC; general IHC practice). | Compare a reported High cell population and a no-primary control, then assess whether the signal follows the expected cytoplasmic pattern (HPA: tissue IHC; general IHC practice). |
| A crisp plasma-membrane rim is absent in tissue IHC (HPA: subcellular ICC-IF). | Plasma-membrane staining is an additional ICC-IF localization, while tissue IHC is described as generally cytoplasmic (HPA: subcellular ICC-IF; HPA: tissue IHC). | Judge the section by cytoplasmic staining in the appropriate cells and record any membrane enrichment separately; do not require a rim for positivity (HPA: tissue IHC; general IHC practice). |
Experiment evidence
IHC & IF images showing ARF1 staining
M01279-1 · IHCIHC analysis of ARF1 using anti-ARF1 antibody (M01279-1). ARF1 was detected in a paraffin-embedded section of human colon tissue. Heat media
M01279-1 · IHCIHC analysis of ARF1 using anti-ARF1 antibody (M01279-1). ARF1 was detected in a paraffin-embedded section of human colon cancer tissue. Hea
HPA · Cerebral cortexHuman Protein Atlas IHC, Cerebral cortex. Source: https://www.proteinatlas.org/ENSG00000143761-ARF1/tissue/cerebral+cortex#imid_2136432
HPA · ColonHuman Protein Atlas IHC, Colon. Source: https://www.proteinatlas.org/ENSG00000143761-ARF1/tissue/colon#imid_2136358
HPA · LiverHuman Protein Atlas IHC, Liver. Source: https://www.proteinatlas.org/ENSG00000143761-ARF1/tissue/liver#imid_2136367
HPA · KidneyHuman Protein Atlas IHC, Kidney. Source: https://www.proteinatlas.org/ENSG00000143761-ARF1/tissue/kidney#imid_2136368
HPA · ICC-IF A-431Human Protein Atlas immunofluorescence, A-431, antibody CAB007742; green = ARF1, blue = nucleus, red = microtubules.
HPA · ICC-IF A-431Human Protein Atlas immunofluorescence, A-431, antibody CAB007742; green = ARF1, blue = nucleus, red = microtubules.
← swipe / scroll for more images →
Real IHC / IF data behind the staining-pattern expectations in this section.
Sample controls for ARF1 IHC & IF
🧪Run human colon first; its glandular cells should stain (HPA: colon glandular cells High). Run ovary as the negative tissue, focusing on ovarian stroma cells (HPA: ovarian stroma cells Not detected); on the colon slide, cells without specific signal should show counterstain without DAB deposit, but HPA does not identify a confirmed negative cell type there.
Positive control tissue: Adrenal gland (Glandular cells, HPA High)
Negative control tissue: Ovary (HPA Not detected)
ICC-IF cell lines (HPA subcellular resource): HPA ICC-IF images show ARF1 in A-431, U-251MG, U2OS, with annotated localisation: Cytosol (approved) (HPA subcellular).
Technical controls: Include a no-primary, secondary-only control, a concentration-matched rabbit isotype control, and ARF1 knockout tissue or a peptide-block control where available (selected tissue-IHC caption: rabbit primary antibody). For colon DAB staining, quench endogenous peroxidase and check for pigment or luminal material that could be mistaken for specific signal (selected tissue-IHC caption: colon section with HRP and DAB).
⚠️Feasibility: A target-specific fixation window or fixation effect is unreported, and the selected M01279-1 colon caption does not state the fixative (selected tissue-IHC caption: fixative not stated). The caption uses heat retrieval in EDTA at pH 8.0, but does not establish that retrieval is required (selected tissue-IHC caption: EDTA retrieval); frozen-section IF cannot be judged easier from the supplied evidence, although ICC-IF images are available for A-431, U-251MG and U2OS (HPA subcellular). In colon, assess glandular-cell staining separately from luminal material and possible endogenous peroxidase signal (HPA: colon glandular cells High; selected tissue-IHC caption: HRP and DAB).
HPA tissue IHC evidence for ARF1
Comprehensive Human Protein Atlas IHC scoring per tissue (reliability: Uncertain — 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 |
|---|---|---|---|---|
| Adrenal gland | Glandular cells | High | Protein (IHC) | HPA → |
| Bronchus | Respiratory epithelial cells | High | Protein (IHC) | HPA → |
| Caudate | Neuronal cells | High | Protein (IHC) | HPA → |
| Cerebral cortex | Neuronal cells | High | Protein (IHC) | HPA → |
| Colon | Glandular cells | High | Protein (IHC) | HPA → |
Undetected expression · recommended negative controls
| Tissue | Cell type | Level | Evidence | Source |
|---|---|---|---|---|
| Ovary | Ovarian stroma cells | Not detected | Protein (IHC) | HPA → |
Section 3
Advanced ARF1 IHC Tips
Troubleshoot ARF1 staining in paraffin sections by checking retrieval, compartment, controls, and scoring before interpreting signal.
How should I adjust retrieval when ARF1 staining is weak in paraffin sections?
Start with heat-mediated antigen retrieval in EDTA at pH 8.0 for paraffin sections (datasheet M01279-1). The catalog antibody produced staining in a human colon paraffin section after that retrieval, followed by 1:50 primary antibody overnight at 4°C (caption M01279-1). If signal is weak, first check heating consistency, section adhesion, and whether the primary incubation matches the documented conditions (standard IHC practice; caption M01279-1). Then compare a longer retrieval period on adjacent sections, watching for tissue damage and increased diffuse staining (standard IHC practice). Keep detection and imaging conditions matched so the retrieval comparison remains interpretable (standard IHC practice).
Could fixation explain weak or diffuse ARF1 staining?
The human colon example identifies a paraffin section but does not state its fixative, so target-specific fixation sensitivity is unknown (caption M01279-1). Record the fixative and fixation duration for each specimen, then compare matched sections processed with the same EDTA pH 8.0 retrieval (standard IHC practice; datasheet M01279-1). Use the documented 1:50 primary incubation overnight at 4°C as a starting point when assessing the catalog antibody (caption M01279-1). If staining differs between fixation batches, check morphology and background alongside signal before assigning the difference to ARF1 (standard IHC practice). Do not infer a fixation effect from tissue staining patterns alone.
Is diffuse cytoplasmic ARF1 staining compatible with its expected localisation?
Yes: tissue IHC shows general cytoplasmic expression, although the HPA staining assessment is uncertain (HPA: tissue IHC profile and reliability). ARF1 also associates with the Golgi apparatus membrane, while cellular imaging reports mainly cytosolic localisation with additional plasma membrane signal (UniProt P84077 subcellular location; HPA: subcellular). Because ARF1 has no transmembrane segment and its membrane association changes with nucleotide state, an exclusively sharp membrane outline is not required (UniProt P84077 topology and membrane association). Compare cytoplasmic staining with cell morphology and a matched negative control on the same staining run (standard IHC practice). Review granular or perinuclear signal at higher magnification without treating its absence as proof of assay failure (UniProt P84077 Golgi location; standard IHC practice).
Can epitope placement or ARF1 processing alter staining interpretation?
The supplied ARF1 record lists 0 isoforms and a chain spanning residues 2–181 (UniProt P84077 isoforms and processing). Its N terminus carries a reported modification and mediates nucleotide-dependent membrane association, but the antibody epitope is not supplied (UniProt P84077 modified residues and subcellular note; caption M01279-1). Consequently, neither epitope accessibility nor cross-reactivity can be predicted from the tissue image alone (standard IHC interpretation). Confirm the antibody's immunogen or epitope documentation before attributing a staining difference to N-terminal processing (standard IHC practice). For discrepant sections, compare retrieval and primary-antibody controls under identical detection conditions before proposing an ARF1-specific mechanism (standard IHC practice).
How can IF help assess the cellular source of ARF1 IHC staining?
Use IF on a separately optimised section to pair ARF1 with a marker of the expected cell type, such as a glandular epithelial marker when examining colon glands (HPA: high in colon glandular cells; standard IF practice). Choose well-separated fluorophores and place the weaker signal in a far-red channel if the tissue has strong shorter-wavelength autofluorescence (standard IF practice). Optimise permeabilisation for access to a potentially cytosolic epitope, while checking whether excessive detergent removes membrane-associated signal; the antibody epitope itself is unspecified (HPA: cytosol; UniProt P84077 membrane association; standard IF practice). Include single-stain and no-primary controls to assess bleed-through and autofluorescence (standard IF practice). Interpret IF localisation alongside, rather than as a numerical substitute for, chromogenic IHC scoring (standard assay practice).
What should I check when ARF1 DAB staining is widespread?
First compare the stained section with a no-primary control to separate primary-dependent staining from detection background (standard IHC practice). The documented colon workflow used 10% goat serum blocking, a 1:50 primary dilution, peroxidase-linked secondary detection, and DAB (caption M01279-1). Check the peroxidase-block step and inspect tissue edges or damaged areas for disproportionately dark deposit (standard chromogenic IHC practice). If background persists, titrate primary antibody and shorten chromogen development on adjacent sections while keeping retrieval at EDTA pH 8.0 (standard IHC practice; datasheet M01279-1). Widespread cytoplasmic signal alone is not decisive, since the tissue profile describes general cytoplasmic expression with uncertain reliability (HPA: tissue IHC profile and reliability).
How should I quantify ARF1 staining across paraffin sections? ⚠ ANSWER MARKED FOR VERIFICATION
Define the cell population and tissue region before scoring, then apply the same boundaries to every section (standard IHC practice). For cytoplasmic ARF1, record the percentage of positive cells and staining intensity, or calculate an H-score from intensity categories and their cell percentages (HPA: general cytoplasmic expression; standard IHC scoring practice). Normalise counts to the number of evaluable cells, or report positive-cell density per mm² of viable tissue when area is the denominator (standard IHC practice). Exclude folds, necrotic areas, and section edges using a rule set before reviewing groups (standard IHC practice). Keep retrieval, DAB development, imaging, and thresholds consistent, and report the HPA reference as uncertain rather than a quantitative standard (standard IHC practice; HPA: reliability).
How can I distinguish credible ARF1 staining from artefact?
Expect a cytoplasmic component in tissue IHC, with Golgi-associated or membrane-associated signal biologically plausible (HPA: tissue IHC profile; UniProt P84077 subcellular location). Check whether stained cells match the sampled compartment: colon glandular cells are reported high, whereas ovarian stroma cells are reported not detected (HPA: colon glandular cells high; HPA: ovarian stroma cells not detected). Treat staining confined to section edges, necrotic areas, or the no-primary control as suspect, and check endogenous peroxidase before interpreting DAB deposit (standard IHC practice). A cell-type mismatch warrants review of morphology, controls, and antibody specificity rather than immediate biological attribution (standard IHC practice). The HPA tissue assessment is uncertain, so agreement with its pattern supports interpretation without establishing specificity (HPA: reliability).
Boster reagents
Best ARF1 / ADP-ribosylation factor 1 IHC Antibodies
M01279-1 has real IHC images from human paraffin sections (catalog image captions). It lists human, mouse and rat reactivity; no IF/ICC data are supplied (catalog applications and images).
Real IHC data
Anti-ARF1 Rabbit Monoclonal Antibody
Cat # M01279-1
M01279-1 was shown by IHC in paraffin sections of human colon, colon cancer and thyroid cancer tissue (catalog image captions). Its listed applications include IHC and its listed reactivity covers human, mouse and rat; the payload contains no IF image (catalog applications, reactivity and images).
Which to pick: For tissue IHC, choose M01279-1, a rabbit monoclonal: its human colon paraffin-section image documents EDTA retrieval at pH 8.0 and a 1:50 dilution; the fixative is unreported (catalog record and image caption). For IF/ICC, no listed SKU has an IF/ICC application or image (catalog applications and images). For mouse or rat IHC, M01279-1 lists those species as reactive, though its supplied IHC images show human tissue (catalog reactivity and image captions).
Each figure is that product's own IHC / IF validation image from its datasheet.
References
- UniProt Consortium. UniProt entry P84077 (ARF1_HUMAN, ADP-ribosylation factor 1).
- Human Protein Atlas. ARF1 tissue IHC expression (reliability: Uncertain).
- Human Protein Atlas. ARF1 subcellular location (ICC-IF): Mainly localized to the cytosol. In addition localized to the plasma membrane..
- Human Protein Atlas. ARF1 antibody validation summary (1 antibodies).
- ARF1 promotes prostate tumorigenesis via targeting oncogenic MAPK signaling. Oncotarget 2016 — PMC5129974.
- Anti-allergic drug azelastine suppresses colon tumorigenesis by directly targeting ARF1 to inhibit IQGAP1-ERK-Drp1-mediated mitochondrial fission. Theranostics 2021 — PMC7778598.
- ADP-ribosylation factor 1 expression regulates epithelial-mesenchymal transition and predicts poor clinical outcome in triple-negative breast cancer. Oncotarget 2016 — PMC4941279.
- Suppression of breast cancer metastasis through the inactivation of ADP-ribosylation factor 1. Oncotarget 2016 — PMC5295416.
- PubMed PMID:2474826 — UniProt-cited evidence.
- PubMed PMID:1899243 — UniProt-cited evidence.
- PubMed PMID:1577740 — UniProt-cited evidence.
Immunohistochemistry protocol sheet for ARF1 (ADP-ribosylation factor 1). Expected localisation Cytoplasmic (HPA tissue IHC); Golgi membrane (UniProt). Antigen retrieval: EDTA pH 8.0 HIER, heat-mediated (datasheet M01279-1). Validated IHC antibody: M01279-1 at 1:50 (the product's own IHC validation image is shown). Controls (HPA): positive Adrenal gland (Glandular cells); negative Ovary. IHC-P workflow on paraffin sections; fixative unspecified. Protocol steps: 1. Sample: Paraffin-embedded human colon tissue; fixative not specified (datasheet M01279-1); 2. Fixation: Image fixative and duration unreported (datasheet M01279-1); 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 retrieval: EDTA pH 8.0 (datasheet M01279-1); 20 min, 95–100 °C (standard); 6. Peroxidase block: 3% H2O2, 10 min , room temperature (standard); 7. Blocking: 10% goat serum (datasheet M01279-1); 8. Primary antibody: Rabbit monoclonal (clone GFA-1) anti-ARF1, 1:50 (datasheet M01279-1); 9. Primary incubation: Overnight at 4 °C (datasheet M01279-1). Watch for: Fixation: Keep fixation conditions consistent across sections (standard IHC practice; not target-specific); Caveat: Tissue staining reliability is uncertain (HPA tissue IHC); Isoform / epitope: No isoforms annotated; chain spans aa 2–181 (UniProt); Regulation: No stimulus regulation annotated (UniProt). Evidence: UniProt P84077, HPA tissue IHC · Uncertain, HPA ICC-IF · Mainly localized to the cytosol. In addition localized to the plasma…, Datasheet M01279-1, PMC5129974, PMC7778598. QR code links to https://www.bosterbio.com/bosterbio-gene-info-cards/ARF1/immunohistochemistry-ihc-guide.