STAT3 Recombinant Monoclonal Antibody

Datasheet

Code	CSB-RA229700A0HU
Size	US$210
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Image	Western Blot Positive WB detected in:Hela whole cell lysate, MCF-7 whole cell lysate All lanes: STAT3 antibody at 1:2000 Secondary Goat polyclonal to rabbit IgG at 1/50000 dilution Predicted band size: 89, 88, 84 kDa Observed band size: 89 kDa IHC image of CSB-RA229700A0HU diluted at 1:100 and staining in paraffin-embedded human heart 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. IHC image of CSB-RA229700A0HU diluted at 1:100 and staining in paraffin-embedded human lung 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.
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Target Background

Product Details

Uniprot No.

P40763

Target Names

STAT3

Alternative Names

Signal transducer and activator of transcription 3 (Acute-phase response factor), STAT3, APRF

Species Reactivity

Human

Immunogen

A synthesized peptide derived from human STAT3

Immunogen Species

Homo sapiens (Human)

Conjugate

Non-conjugated

Clonality

Monoclonal

Isotype

Rabbit IgG

Clone No.

3A9

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

Recommended Dilution

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

Protocols

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

STAT3 serves as a critical transcription factor at the intersection of cytokine signaling and gene regulation, functioning as both a signal transducer and activator of transcription. This dual role positions STAT3 as a central mediator in cellular processes ranging from immune responses to cell survival and proliferation. Its dysregulation has been implicated in numerous pathological conditions, making it a compelling target for researchers investigating oncogenesis, cardiovascular disease, and stem cell biology.

This recombinant monoclonal antibody, generated from clone 3A9, offers the reproducibility that demanding experimental workflows require. Because the antibody sequence is defined and production occurs in controlled recombinant systems, you can expect consistent performance across different lots, eliminating a common source of experimental variability that can complicate long-term studies or multi-site collaborations.

Validation studies demonstrate reliable detection of human STAT3 across multiple experimental platforms. In western blot applications, the antibody identifies a band at the expected 89 kDa molecular weight in both HeLa and MCF-7 whole cell lysates, with effective detection at 1:2000 dilution. For immunohistochemistry, the antibody has been validated in paraffin-embedded human tissues, including heart and lung cancer specimens at 1:100 dilution using citrate buffer antigen retrieval, providing flexibility for researchers working with clinical or archival samples.

The antibody's affinity-purified formulation and optimized buffer system support straightforward integration into existing protocols. Whether your work focuses on JAK-STAT pathway dynamics in cancer progression, cardiac tissue remodeling, or developmental signaling networks, this antibody provides a dependable tool for interrogating STAT3 expression and localization in human samples.

Usage

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

Customer Reviews and Q&A

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Target Background

Function

Signal transducer and transcription activator that mediates cellular responses to interleukins, KITLG/SCF, LEP and other growth factors. Once activated, recruits coactivators, such as NCOA1 or MED1, to the promoter region of the target gene. May mediate cellular responses to activated FGFR1, FGFR2, FGFR3 and FGFR4. Upon activation of IL6ST/gp130 signaling by interleukin-6 (IL6), binds to the IL6-responsive elements identified in the promoters of various acute-phase protein genes. Activated by IL31 through IL31RA. Acts as a regulator of inflammatory response by regulating differentiation of naive CD4(+) T-cells into T-helper Th17 or regulatory T-cells (Treg): deacetylation and oxidation of lysine residues by LOXL3, leads to disrupt STAT3 dimerization and inhibit its transcription activity. Involved in cell cycle regulation by inducing the expression of key genes for the progression from G1 to S phase, such as CCND1. Mediates the effects of LEP on melanocortin production, body energy homeostasis and lactation. May play an apoptotic role by transctivating BIRC5 expression under LEP activation. Cytoplasmic STAT3 represses macroautophagy by inhibiting EIF2AK2/PKR activity. Plays a crucial role in basal beta cell functions, such as regulation of insulin secretion.

Gene References into Functions

I157172 induced upregulation of SIRT1, and downregulation of acetyl-STAT3. PMID: 30365149
an HBV-pSTAT3-SALL4-miR-200c axis regulates PD-L1 causing T cell exhaustion PMID: 29593314
reveal that breast cancer stem cell (BCSC) in triple-negative breast cancer depend on the transcription regulator HN1L for the sustained activation of the LEPR-STAT3 pathway, which makes it a potentially important target for both prognosis and BCSC therapy. PMID: 29249663
findings illustrate the significance of CREB-KDM4B-STAT3 signaling cascade in DNA damage response, and highlight that KDM4B may potentially be a novel oncotarget for colorectal cancer radiotherapy. PMID: 29633065
TNFRSF1A is a STAT3 target gene that regulates the NF-kappaB pathway. PMID: 29621649
Downregulation of miR-340 inhibited GC cell proliferation, arrested cell cycle, and facilitated apoptosis through upregulating SOCS3 expression to suppress JAK-STAT3 signaling pathway. PMID: 29658372
we wanted to explore whether STAT3 can be related to lymph node micrometastasis of non-small cell lung cancer (NSCLC). To address this question, we evaluated the expression of MUC1 mRNA in the lymph node samples of NSCLC to determine micrometastasis. Then, we evaluated what role STAT3 overexpression plays in lymph node micrometastasis of NSCLC. PMID: 29575778
Our results showed that IL-37 plays an inhibitory role in non-small cell lung cancer progression, possibly by suppressing STAT3 activation and decreasing epithelial-to-mesenchymal transition by inhibiting IL-6 expression. IL-37 could serve as a potential novel tumor suppressor in non-small cell lung cancer PMID: 29575809
Study shows that vascular endothelial growth factor A stimulates STAT3 activity via nitrosylation of myocardin to regulate the expression of vascular smooth muscle cell differentiation markers. PMID: 28572685
The investigation demonstrated that the serum levels of FGF23 and the phosphorylation levels of JAK2, STAT1, and STAT3 were up-regulated in the ovariectomy (OVX) + NVP-BGJ398 group while were down-regulated in the OVX + Anti-FGF23 group than that in the OVX group. PMID: 28782829
Genetic or pharmacologic inactivation of SHP2 promotes accumulation of JAK2 phosphorylated at Y570, reduces JAK2/STAT3 signaling, inhibits TGFbeta-induced fibroblast activation and ameliorates dermal and pulmonary fibrosis. PMID: 30108215
Mir-204 attenuates angiogenesis in lung adenocarcinoma via JAK2-STAT3 pathway. PMID: 29281186
Study utilizing integrative analysis of transcriptomic, metabolomic, and clinical data propose a model of GOT2 transcriptional regulation, in which the cooperative phosphorylation of STAT3 and direct joint binding of STAT3 and p65/NF-kappaB to the proximal GOT2 promoter are important. PMID: 29666362
FEZF1-AS1 acts as an oncogenic lncRNA in human hepatocellular carcinoma by promoting JAK2/STAT3 signaling-mediated epithelial mesenchymal transformation. PMID: 29957463
FABP5 promotes tumor angiogenesis via activation of the IL6/STAT3/VEGFA signaling pathway in hepatocellular carcinoma. PMID: 29957468
The result of our study for the first time provides evidence that rs1053004 polymorphism is significantly associated with a decreased risk of Cardiopulmonary bypass-associated acute kidney injury in Iranian population, especially in older subjects. PMID: 29846833
Simultaneous inactivation of EAF2 and p53 can act to activate STAT3 and drive prostate tumorigenesis. PMID: 29518696
a transcription-independent mechanism for Stat3-mediated centrosome clustering that involves Stathmin, a Stat3 interactor involved in microtubule depolymerization, and the mitotic kinase PLK1, is reported. PMID: 28474672
This review discusses the upstream activators of STAT3 in skeletal muscles, with a focus on interleukin 6 (IL6) and transforming growth factor beta 1 (TGF-beta1). PMID: 30072615
High STAT3 expression is associated with lung adenocarcinoma. PMID: 30015929
JAK2 and STAT3 are activated in Idiopathic pulmonary fibrosis PMID: 29409529
The results reveal that the EGF-STAT3 signaling pathway promotes and maintains colorectal cancer (CRC)stemness. In addition, a crosstalk between STAT3 and Wnt activates the Wnt/beta-catenin signaling pathway, which is also responsible for cancer stemness. Thus, STAT3 is a putative therapeutic target for CRC treatment. PMID: 30068339
MiR-29a down-regulation is correlated with drug resistance of nasopharyngeal carcinoma cell line CNE-1 and MiR-29a up-regulation decreases Taxol resistance of nasopharyngeal carcinoma CNE-1 cells possibly via inhibiting STAT3 and Bcl-2 expression. PMID: 29914005
Kidney biopsies from patients with IgA nephropathy and diabetic nephropathy exhibited substantial activation of p53 and STAT3, decreased expression of SOCS7, and increase in profibrotic proteins and miR-199a-3p. PMID: 28240316
Low-dose radiation decreases tumor progression via the inhibition of the JAK1/STAT3 signaling axis in breast cancer cell lines and in a mouse xenograft model. PMID: 28240233
High STAT3 expression is associated with cell growth, aggressiveness, metastasis in gastric cancer. PMID: 30015981
High expression of iNOS and STAT3 in cells transfected with miR-34a mimic further validated it. PMID: 30021364
Findings outlined in the current study demonstrated that the inhibition of P16 decreased the growth and metastasis potential of BC cells by inhibiting IL-6/JAK2/STAT3 signaling. PMID: 29388151
G6PD contributes to HCC migration and invasion of hepatocellular carcinoma cells by inducing epithelial-mesenchymal transition through activation of signal transducer and activator of transcription 3 PMID: 29471502
CXCR7 silencing inhibits the migration and invasion of human tumor endothelial cells derived from hepatocellular carcinoma by suppressing STAT3. PMID: 29901083
These data show that activated p-STAT3 upregulates epithelial-to-mesenchymal transition-related proteins and promotes vasculogenic mimicry. PMID: 29333928
High STAT3 expression is associated with drug resistance in Chronic myeloid leukemia. PMID: 29936783
Case Report: breast implant-associated anaplastic large cell lymphoma with dual JAK1/STAT3 mutations. PMID: 29637270
Data indicate that signal transducer and activator of transcription 3 (STAT3) has emerged as a promising target in cancer immunotherapy [Review]. PMID: 29222039
Downregulation of the lincRNA of the NED25 gene was associated with sepsis in patients by modulating the signaling pathways downstream of miR-125b/STAT3/PCT/NO signaling pathway. PMID: 29962507
High STAT3 expression is associated with invasion and lymph node metastasis in gastric cancer. PMID: 29970682
The present study demonstrated that the downregulation of filaggrin in the epidermis by toluene is mediated by ERK1/2 and STAT3-dependent pathways. PMID: 27498358
these results indicated that STAT3-mediated downexpression of miR-579-3p caused resistance to vemurafenib. Our findings suggest novel approaches to overcome resistance to vemurafenib by combining vemurafenib with STAT3 sliencing or miR-579-3p overexpression. PMID: 30010109
Our study identified the STAT3 rs1053004 C/C as a high-risk genotype in MA (MISSED ABORTION) with lower survivin and VEGF transcription levels in the peripheral blood PMID: 30226700
The role of mitochondrial Stat3 as regulator for lymphocyte function is reviewed. PMID: 29866996
addition of colivelin, a STAT3 activator, instead of IL-6 and C2C12 conditioned medium, promoted the myogenic differentiation of adipose tissue-derived stem cells. PMID: 29882916
These results suggested that stemness induction in SKOV3 cells by macrophages co-cultured with SKOV3-derived OCSLCs involved IL-8/STAT3 signaling. PMID: 29656182
Parthenolide also induced reactive oxygen species (ROS), but the increased ROS did not seem to contribute to the inhibition of JAK/STAT3 signaling. PMID: 29921758
The phosphor STAT3 expression was associated with adverse survival in squamous cell carcinoma, but not in the oesophageal adenocarcinoma patients. PMID: 29890775
In Ishikawa human endometrial adenocarcinoma cell line MIG-6 negatively regulates the phosphorylation of STAT3 via direct protein interaction with STAT3. PMID: 28925396
IL-23 binding to its receptor promotes the migration and invasion of gastric cancer cells by inducing epithelial-to-mesenchymal transition through the STAT3 signaling pathway. PMID: 29574157
Oct4 plays a vital role in the malignant progression of HCC cells through the survivin/STAT3 signaling pathway. PMID: 29901157
our data demonstrate that hypoxia strongly potentiates the peroxide-mediated induction of hepcidin via STAT3 signaling pathway. Moreover, oxidases such as NOX4 or artificially overexpressed urate oxidase (UOX) can induce hepcidin PMID: 29459227
a novel signal circuit of Stat3/Oct-4/c-Myc was identified for regulating stemness-mediated Doxorubicin resistance in triple-negative breast cancer PMID: 29750424
Data show that knockdown of STAT transcription factors STAT3 and/or STAT5 reduces DNA methylcytosine dioxygenase Ten-eleven translocation 1 (TET1) level. PMID: 29235481

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Involvement in disease

Hyperimmunoglobulin E recurrent infection syndrome, autosomal dominant (AD-HIES); Autoimmune disease, multisystem, infantile-onset, 1 (ADMIO1)

Subcellular Location

Cytoplasm. Nucleus. Note=Shuttles between the nucleus and the cytoplasm. Translocated into the nucleus upon tyrosine phosphorylation and dimerization, in response to signaling by activated FGFR1, FGFR2, FGFR3 or FGFR4. Constitutive nuclear presence is independent of tyrosine phosphorylation. Predominantly present in the cytoplasm without stimuli. Upon leukemia inhibitory factor (LIF) stimulation, accumulates in the nucleus. The complex composed of BART and ARL2 plays an important role in the nuclear translocation and retention of STAT3. Identified in a complex with LYN and PAG1.

Protein Families

Transcription factor STAT family

Tissue Specificity

Heart, brain, placenta, lung, liver, skeletal muscle, kidney and pancreas. Expressed in naive CD4(+) T cells as well as T-helper Th17, Th1 and Th2 cells.

Database Links

HGNC: 11364

OMIM: 102582

KEGG: hsa:6774

STRING: 9606.ENSP00000264657

UniGene: Hs.463059

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Related pathways

Chemokine signaling pathway HIF-1 signaling pathway Jak-STAT signaling pathway Necroptosis Signaling pathways regulating pluripotency of stem cells Th17 cell differentiation Adipocytokine signaling pathway AGE-RAGE signaling pathway in diabetic complications FoxO signaling pathway Target Therapy

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