Product Details

Uniprot No.

Target Names

Alternative Names

Hepatocyte nuclear factor 3-alpha (HNF-3-alpha) (HNF-3A) (Forkhead box protein A1) (Transcription factor 3A) (TCF-3A), FOXA1, HNF3A TCF3A

Species Reactivity

Human

Immunogen

A synthesized peptide derived from human FOXA1

Immunogen Species

Homo sapiens (Human)

Conjugate

Non-conjugated

Clonality

Monoclonal

Isotype

Rabbit IgG

Clone No.

3B2

Purification Method

Affinity-chromatography

Concentration

It differs from different batches. Please contact us to confirm it.

Buffer

Rabbit IgG in 10mM phosphate buffered saline , pH 7.4, 150mM sodium chloride, 0.05% BSA, 0.02% sodium azide and 50% glycerol.

Form

Liquid

Tested Applications

ELISA, WB, IHC, IP

Recommended Dilution

Application	Recommended Dilution
WB	1:500-1:5000
IHC	1:50-1:200
IP	1:200-1:1000

Protocols

ELISA Protocol
Western Blotting(WB) Protocol
Immunohistochemistry (IHC) Protocol
Immunoprecipitation (IP) Protocol

Troubleshooting and FAQs

Antibody FAQs

Storage

Upon receipt, store at -20°C or -80°C. Avoid repeated freeze.

Lead Time

Basically, we can dispatch the products out in 1-3 working days after receiving your orders. Delivery time maybe differs from different purchasing way or location, please kindly consult your local distributors for specific delivery time.

Description

FOXA1, also known as hepatocyte nuclear factor 3-alpha, is a pioneering transcription factor that plays a critical role in chromatin remodeling and gene regulation. This forkhead box protein opens condensed chromatin to enable other transcription factors to access DNA, making it essential for developmental processes and hormone receptor signaling. FOXA1 has garnered significant research attention due to its involvement in breast and prostate cancer progression, where it modulates estrogen and androgen receptor activity, respectively.

This recombinant monoclonal antibody, clone 3B2, offers the reproducibility and consistency that demanding research applications require. Because it is produced from a defined genetic sequence rather than traditional hybridoma methods, you can expect uniform performance across experiments and between lots, eliminating a common source of variability in long-term studies.

Validation data demonstrates robust performance across multiple experimental platforms. Western blot analysis confirms detection of FOXA1 at the expected 50 kDa molecular weight across a diverse panel of human cell lines, including MCF-7, HepG2, PC-3, 293, and HeLa lysates, providing confidence when working with various cellular models. Immunohistochemistry staining has been validated in paraffin-embedded human breast cancer and prostate tissue sections, directly relevant for researchers investigating FOXA1's role in hormone-responsive malignancies. Immunoprecipitation capability has been confirmed in HeLa lysates, enabling protein interaction studies and complex isolation workflows.

Whether you are investigating FOXA1's pioneering function in chromatin accessibility, its cooperative interactions with nuclear hormone receptors, or its dysregulation in cancer, this antibody provides a reliable tool for epigenetics and nuclear signaling research across biochemical, cellular, and tissue-based applications.

Usage

For Research Use Only. Not for use in diagnostic or therapeutic procedures.

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Target Background

Function

Transcription factor that is involved in embryonic development, establishment of tissue-specific gene expression and regulation of gene expression in differentiated tissues. Is thought to act as a 'pioneer' factor opening the compacted chromatin for other proteins through interactions with nucleosomal core histones and thereby replacing linker histones at target enhancer and/or promoter sites. Binds DNA with the consensus sequence 5'-[AC]A[AT]T[AG]TT[GT][AG][CT]T[CT]-3'. Proposed to play a role in translating the epigenetic signatures into cell type-specific enhancer-driven transcriptional programs. Its differential recruitment to chromatin is dependent on distribution of histone H3 methylated at 'Lys-5' (H3K4me2) in estrogen-regulated genes. Involved in the development of multiple endoderm-derived organ systems such as liver, pancreas, lung and prostate; FOXA1 and FOXA2 seem to have at least in part redundant roles. Modulates the transcriptional activity of nuclear hormone receptors. Is involved in ESR1-mediated transcription; required for ESR1 binding to the NKX2-1 promoter in breast cancer cells; binds to the RPRM promoter and is required for the estrogen-induced repression of RPRM. Involved in regulation of apoptosis by inhibiting the expression of BCL2. Involved in cell cycle regulation by activating expression of CDKN1B, alone or in conjunction with BRCA1. Originally described as a transcription activator for a number of liver genes such as AFP, albumin, tyrosine aminotransferase, PEPCK, etc. Interacts with the cis-acting regulatory regions of these genes. Involved in glucose homeostasis.

Gene References into Functions

High FOXA1 expression is associated with the pathogenesis of gastric cancer. PMID: 30066917
FoxA1 might be related to the development and differentiation of secretory coil-like structures, as well as the secretory function of the 3D reconstructed eccrine sweat glands. PMID: 29909922
TUG1 promoted osteosarcoma cell proliferation and suppressed apoptosis by regulating the miR-212-3p/FOXA1 axis. PMID: 29793327
miR-760 should be considered as a tumor suppressor since it negatively regulates the oncogene protein FOXA1 and regulated TRAIL sensitivity in Non-small cell lung cancer cells. PMID: 29665655
As a tumor suppressor, FOXA1 targets PIK3R1 directly to inhibit PI3K/Akt signaling pathway, thus exerting a negative regulatory effect on proliferation, migration, and invasion of HCC in male patients. PMID: 29208003
miR212 suppresses renal cell carcinoma (RCC) proliferation and invasion by modulating FOXA1, suggesting that miR212 may have potential as a therapeutic target in RCC. PMID: 29115609
the results of the present study suggested that FOXA1 is a potential oncogene in NSCLC PMID: 29115441
During the ensuing weeks, the PAX2/FOXA1 boundary progressively extended cranially such that by 21 weeks the entire vaginal epithelium was FOXA1-reactive and PAX2-negative. This observation supports Bulmer's proposal that human vaginal epithelium derives solely from urogenital sinus epithelium PMID: 28918284
The transcription factor FOXA1 directly bound to the PLOD2 promoter, and turned on PLOD2 transcription. In summary, our findings revealed a regulatory mechanism of NSCLC metastasis through EGFR-PI3K/AKT-FOXA1-PLOD2 pathway. PMID: 29072684
maintenance of the cancer cell state is dependent on recruitment of Mediator and Cohesin through FOXA and master transcription factors PMID: 27739523
overexpression of GATA3 and FOXA1 cooperate with PPAR activation to drive transdifferentiation of a basal bladder cancer cells to a luminial phenotype. PMID: 27924948
Results found FOXA1 to be hypermethylated in breast tumors from African American (AA) versus European American (EA) women with ER- cancer, and methylation levels showed strong inverse relationships with both mRNA and protein levels. A significant positive association was identified between parity and FOXA1 methylation in tumors from AA women who did not breastfeed. PMID: 28756535
High expression of FOXA1 is associated with breast tumor. PMID: 28534958
High FOXA1 expression was significantly associated with presence of lymph node metastasis (LNM), low tumour-infiltrating lymphocytes (TILs), and submucosal invasion. PMID: 28843920
Results provide evidence that the atypical expression of FOXA1 transcriptional factor is an important player in psoriasis, as it inhibits maturation of naive T cells into a Treg subpopulation, therefore contributing to the development of psoriatic skin lesions. PMID: 28849568
Authors demonstrated that ER(alpha), GATA3 and FOXA1 form a transcriptional complex with Ell3 to regulate IL-20 expression in ER(+) breast cancer cells. FOXA1 represses IL-20 expression, whereas GATA3 and ER(alpha) activate it. PMID: 28514748
the findings show that squamous and micropapillary bladder cancers have different expression patterns of CK14 and FOXA1 and suggest that they arise from distinct precursors. PMID: 28721490
rs4442975 may not confer a risk of breast cancer occurrence or progression in the Chinese Han population. PMID: 27835577
As a transcriptionally regulated program, urothelial differentiation operates as a heterarchy, wherein GATA3 is able to co-operate with FOXA1 to drive expression of luminal marker genes, but that P63 has potential to transrepress expression of the same genes. PMID: 28282036
FOXA1 overexpression mediates endocrine resistance by altering the ER transcriptome and IL-8 expression in ER-positive breast cancer. PMID: 27791031
Findings suggested FOXA1 may act as an anti-oncogene in gastric cancer (GC) cells. Low-level expression of FOXA1 protein was confirmed in GC tissues and cell lines. FOXA1 over-expression could significantly affect cell proliferation, apoptosis and tumor invasion of GC cells, which may be resulted by reversing EMT. PMID: 29129808
High expression of FOXA1 is an independent prognostic parameter in ERG negative prostate cancer PMID: 29029032
A molecular mechanism by which Estradiol antagonizes GR-dependent induction of specific genes by preventing the recruitment of the pioneer factors FOXA1 and FOXA2 in a physiologically relevant model. PMID: 28938408
Results show that c-Abl phosphorylates FoxA1 at multiple sites. Tyr429 and Tyr464 were identified as the major phosphorylation sites in the FoxA1 C-terminal region. This c-Abl-mediated phosphorylation of FoxA1 promotes the activation of estrogen signaling by inducing its binding to histones. PMID: 27883218
MLL3 binding was dependent on FOXA1, indicating that FOXA1 recruits MLL3 to chromatin. MLL3 silencing decreased H3K4me1 at enhancer elements but had no appreciable impact on H3K4me3 at enhancer elements. We propose a mechanism whereby the pioneer factor FOXA1 recruits the chromatin modifier MLL3 to facilitate the deposition of H3K4me1 histone marks, subsequently demarcating active enhancer elements PMID: 27926873
FoxA1 discriminates between medullary thyroid carcinoma and tumors of follicular derivation with sensitivity and specificity greater than calcitonin and carcinoembryonic antigen. PMID: 28546130
FOXA1 loss may play a significant role in enabling prostate cancer progression to neuroendocrine prostate cancer, whereas IL-8 and MAPK/ERK pathways may be promising targets for therapeutic intervention. PMID: 28319070
Low FOXA1 expression is associated with breast cancer invasion and metastasis. PMID: 27524420
the distinct mechanisms by which GATA2 and FOXA1 regulate AR cistrome and suggest that FOXA1 acts upstream of GATA2 and AR in determining hormone-dependent gene expression in prostate cancer. PMID: 26751772
Study implicates enhancer reprogramming, FOXA1 upregulation, and a retrograde developmental transition in pancreatic ductal adenocarcinoma metastasis. PMID: 28757253
Studies indicate that microRNA miR-212 exerts its inhibitory effect on hepatocellular carcinoma (HCC) by inhibiting forkhead transcription factor FOXA1 expression. PMID: 27999212
FOXA1 is expressed by basal cells of squamous epithelium, pre-invasion lesions of the uterine cervix and the head/neck and almost half invasive cervical and head/neck carcinomas, supporting its possible implication in HPV associated carcinomas. PMID: 28209524
CREB1/FoxA1 signaling is a targetable driver of prostate cancer progression and serves as a biomarker of poor clinical outcomes. PMID: 26743006
miR-93 may promote the process of epithelial-mesenchymal transition in endometrial carcinoma cells by targeting FOXA1. PMID: 27829043
conclusion, our results demonstrated that miR24 inhibits breast cancer cells invasion by targeting OGT and reducing FOXA1 stability. These results also indicated that OGT might be a potential target for the diagnosis and therapy of breast cancer metastasis. PMID: 28455227
FOXA1 is not only able to recognize but also remodel the epigenetic signatures at lineage-specific enhancers, which is mediated, at least in part, by a feed-forward regulatory loop between FOXA1 and TET1. PMID: 27257062
Based on these results, we suggest that FOXA1 plays a catalytic role in ovarian cancer pathogenesis and development by affecting the expression of the above-mentioned proteins. PMID: 28488543
these results suggest that FOXA1 suppresses expression of IL6 through inhibition of NF-kappaB recruitment to the IL6 promoter in an ERalpha-independent manner and that reduction in FOXA1 expression induces IL6 expression and contributes to cancer stem cell-like properties in TAM-R cells. PMID: 28270510
These results suggest a positional-nucleosome-oriented accessing model for Pioneer factors seeking target motifs, in which FOXA1 can examine each underlying DNA nucleotide. PMID: 27458208
Down-regulation of TRPS1 by miR-373, acting as a transcriptional activator, promotes epithelial-mesenchymal transition (EMT) and metastasis by repressing FOXA1 transcription, expanding upon its previously reported role as a transcription repressor. PMID: 26969828
FOXA1 is found in ovarian mucinous and Brenner tumours PMID: 28238418
the results of the present study indicated that FOXA1 may be considered a potential prognostic marker, and may promote tumor growth of CRC by upregulating YAP expression. PMID: 27484093
meta-analysis showed that high expression of FOXA1 in breast cancer patients was a good prognostic indicator for survival outcome. PMID: 27212698
FOXA1 promotes cell senescence in EC by interaction with p16INK4a. PMID: 27349269
There is significantly increased esophageal squamous cell carcinoma risk associated with the FOXA1 rs7144658 T > C polymorphism among male patients. PMID: 27050876
Meta-analysis results clearly point to an important role of FOXA1 and FOXA2 gene regulatory networks in the etiology of Alzheimer's disease PMID: 26890743
show that ER and GR both have the ability to alter the genomic distribution of the FoxA1 pioneer factor. Single-molecule tracking experiments reveal a highly dynamic interaction of FoxA1 with chromatin in vivo; FoxA1 factor is not associated with footprints at its binding sites throughout the genome; findings support a model wherein interactions between transcription factors and pioneer factors are highly dynamic. PMID: 27062924
findings suggest a key role for GalNAc-T4 in the estrogen pathway through FOXA1 glycosylation PMID: 26541755
The ratio of FoxA1 to FoxA2 in lung adenocarcinoma is regulated by LncRNA HOTAIR and chromatin remodeling factor LSH PMID: 26658322
Loss of Interdependent Binding by the FoxO1 and FoxA1/A2 Forkhead Transcription Factors Culminates in Perturbation of Active Chromatin Marks and Binding of Transcriptional Regulators at Insulin-sensitive Genes. PMID: 26929406

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Subcellular Location

Nucleus.

Tissue Specificity

Highly expressed in prostate and ESR1-positive breast tumors. Overexpressed in esophageal and lung adenocarcinomas.

Database Links

HGNC: 5021

OMIM: 602294

KEGG: hsa:3169

STRING: 9606.ENSP00000250448

UniGene: Hs.163484

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Code	CSB-RA246102A0HU
Size	US$210
	Order now
Image	Western Blot Positive WB detected in: MCF-7 whole cell lysate, HepG2 whole cell lysate, PC-3 whole cell lysate, 293 whole cell lysate, Hela whole cell lysate All lanes: FOXA1 antibody at 1:2000 Secondary Goat polyclonal to rabbit IgG at 1/50000 dilution Predicted band size: 50, 46 kDa Observed band size: 50 kDa IHC image of CSB-RA246102A0HU diluted at 1:100 and staining in paraffin-embedded human breast cancer performed on a Leica BondTM system. After dewaxing and hydration, antigen retrieval was mediated by high pressure in a citrate buffer (pH 6.0). Section was blocked with 10% normal goat serum 30min at RT. Then primary antibody (1% BSA) was incubated at 4℃ overnight. The primary is detected by a Goat anti-rabbit IgG polymer labeled by HRP and visualized using 0.05% DAB. IHC image of CSB-RA246102A0HU diluted at 1:100 and staining in paraffin-embedded human prostate tissue performed on a Leica BondTM system. After dewaxing and hydration, antigen retrieval was mediated by high pressure in a citrate buffer (pH 6.0). Section was blocked with 10% normal goat serum 30min at RT. Then primary antibody (1% BSA) was incubated at 4℃ overnight. The primary is detected by a Goat anti-rabbit IgG polymer labeled by HRP and visualized using 0.05% DAB. Immunoprecipitating FOXA1 in Hela whole cell lysate Lane 1: Rabbit control IgG instead of CSB-RA246102A0HU in Hela whole cell lysate. For western blotting,a HRP-conjugated Protein G antibody was used as the secondary antibody (1/2000) Lane 2: CSB-RA246102A0HU(2µg)+ Hela whole cell lysate(500µg) Lane 3: Hela whole cell lysate (10µg)
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FOXA1 Recombinant Monoclonal Antibody

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