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AB40759

Anti-Smad4 antibody [EP618Y]

4

(9 Reviews)

|

(204 Publications)

Anti-Smad4 antibody [EP618Y] (ab40759) is a rabbit monoclonal antibody detecting Smad4 in Western Blot, IHC-P. Suitable for Human, Mouse, Rat.

- KO validated for confirmed specificity
- Biophysical QC for unrivalled batch-batch consistency
- Over 170 publications
- Trusted since 2006

View Alternative Names

DPC4, MADH4, SMAD4, SMAD family member 4, SMAD 4, hSMAD4, Deletion target in pancreatic carcinoma 4, Mothers against decapentaplegic homolog 4, MAD homolog 4, Mothers against DPP homolog 4

11 Images
Immunohistochemistry (Formalin/PFA-fixed paraffin-embedded sections) - Anti-Smad4 antibody [EP618Y] (AB40759)
  • IHC-P

Unknown

Immunohistochemistry (Formalin/PFA-fixed paraffin-embedded sections) - Anti-Smad4 antibody [EP618Y] (AB40759)

Immunohistochemistry (Formalin/PFA-fixed paraffin-embedded sections) analysis of human breast carcinoma tissue labelling Smad4 with purified ab40759 at 1/100. Heat mediated antigen retrieval was performed using Tris/EDTA buffer pH 9. ab97051, a HRP-conjugated goat anti-rabbit IgG (H+L) was used as the secondary antibody (1/500). Negative control using PBS instead of primary antibody. Counterstained with hematoxylin.

Immunohistochemistry (Formalin/PFA-fixed paraffin-embedded sections) - Anti-Smad4 antibody [EP618Y] (AB40759)
  • IHC-P

Unknown

Immunohistochemistry (Formalin/PFA-fixed paraffin-embedded sections) - Anti-Smad4 antibody [EP618Y] (AB40759)

Immunohistochemistry (Formalin/PFA-fixed paraffin-embedded sections) analysis of human lung carcinoma tissue labelling Smad4 with unpurified ab40759 at a 1/100 dilution.

Perform heat mediated antigen retrieval before commencing with IHC staining protocol.

Immunohistochemistry (Formalin/PFA-fixed paraffin-embedded sections) - Anti-Smad4 antibody [EP618Y] (AB40759)
  • IHC-P

AbReview31424****

Immunohistochemistry (Formalin/PFA-fixed paraffin-embedded sections) - Anti-Smad4 antibody [EP618Y] (AB40759)

Unpurified ab40759 staining Smad4 in rat femur tissue sections by Immunohistochemistry (IHC-P - paraformaldehyde-fixed, paraffin-embedded sections). Tissue was fixed with formaldehyde and blocked with 1% BSA for 20 minutes at 22°C; antigen retrieval was by heat mediation in a citrate buffer pH6.0. Samples were incubated with primary antibody (1/200 in blocking buffer) for 2 hours at 20°C. An undiluted HRP-conjugated goat anti-rabbit IgG polyclonal (1/250) was used as the secondary antibody.

This image is courtesy of an anonymous Abreview.

Western blot - Anti-Smad4 antibody [EP618Y] (AB40759)
  • WB

Lab

Western blot - Anti-Smad4 antibody [EP618Y] (AB40759)

Lane 1 : Wild type HAP1 whole cell lysate (20 μg)
Lane 2 : SMAD4 knockout HAP1 whole cell lysate (20 μg)
Lane 3 : HepG2 whole cell lysate (20 μg)
Lane 4 : Jurkat whole cell lysate (20 μg)

Lanes 1 - 4 : Merged signal (red and green). Green - ab40759 observed at 60 kDa. Red - loading control, ab9484, observed at 37 kDa.

ab40759 was shown to specifically react with SMAD4 in wild type HAP1 cells. No band was observed when SMAD4 knockout HAP1 samples were used. Wild-type and SMAD4 knockout samples were subjected to SDS-PAGE. ab40759 and ab9484 (Mouse anti GAPDH loading control) were incubated overnight at 4°C at 1000 dilution and 1/20000 dilution respectively. Blots were developed with Goat anti-Rabbit IgG H&L (IRDye® 800CW) preabsorbed ab216773 and Goat anti-Mouse IgG H&L (IRDye® 680RD) preabsorbed ab216776 secondary antibodies at 1/20000 dilution for 1 hour at room temperature before imaging.

All lanes:

Western blot - Anti-Smad4 antibody [EP618Y] (ab40759)

Predicted band size: 60 kDa

false

Western blot - Anti-Smad4 antibody [EP618Y] (AB40759)
  • WB

Unknown

Western blot - Anti-Smad4 antibody [EP618Y] (AB40759)

All lanes:

Western blot - Anti-Smad4 antibody [EP618Y] (ab40759) at 1/5000 dilution

All lanes:

SHSY5Y (Human neuroblastoma cell line from bone marrow) cell lysate at 10 µg

Predicted band size: 60 kDa

false

Western blot - Anti-Smad4 antibody [EP618Y] (AB40759)
  • WB

Lab

Western blot - Anti-Smad4 antibody [EP618Y] (AB40759)

Blocking and dilution buffer : 5% NFDM/TBST.

All lanes:

Western blot - Anti-Smad4 antibody [EP618Y] (ab40759) at 1/5000 dilution

Lane 1:

SW480 (Human colorectal adenocarcinoma cell line) cell lysate at 20 µg

Lane 2:

HepG2 (Human liver hepatocellular carcinoma cell line) cell lysate at 20 µg

Lane 3:

Jurkat (Human T cell leukemia cell line from peripheral blood) cell lysate at 20 µg

Lane 4:

Human skin tissue lysate at 20 µg

Lane 5:

Human lung tissue lysate at 20 µg

Lane 6:

Human artery tissue lysate at 20 µg

Secondary

All lanes:

Western blot - Goat Anti-Rabbit IgG H&L (HRP) (<a href='/en-us/products/secondary-antibodies/goat-rabbit-igg-h-l-hrp-ab97051'>ab97051</a>) at 1/20000 dilution

Predicted band size: 60 kDa

Observed band size: 60 kDa

false

Exposure time: 30s

Western blot - Anti-Smad4 antibody [EP618Y] (AB40759)
  • WB

Unknown

Western blot - Anti-Smad4 antibody [EP618Y] (AB40759)

Blocking and diluting buffer : 5% NFDM/TBST.

All lanes:

Western blot - Anti-Smad4 antibody [EP618Y] (ab40759) at 1/5000 dilution

Lane 1:

SH-SY5Y (Human neuroblastoma cell line from bone marrow) cell lysate at 10 µg

Lane 2:

Ramos (Human Burkitt's lymphoma cell line) cell lysate at 10 µg

Secondary

All lanes:

Goat Anti-Rabbit IgG, (H+L), Peroxidase conjugated at 1/1000 dilution

Predicted band size: 60 kDa

Observed band size: 60 kDa

false

Western blot - Anti-Smad4 antibody [EP618Y] (AB40759)
  • WB

Lab

Western blot - Anti-Smad4 antibody [EP618Y] (AB40759)

Different batches of ab40759 were tested on Ramos (Human Burkitt's lymphoma B lymphocyte) lysate at 0.7 µg/ml. 15 µg of lysate was loaded in each lane. Bands observed at 60 kDa.

All lanes:

Western blot - Anti-Smad4 antibody [EP618Y] (ab40759)

Predicted band size: 60 kDa

false

Western blot - Anti-Smad4 antibody [EP618Y] (AB40759)
  • WB

Unknown

Western blot - Anti-Smad4 antibody [EP618Y] (AB40759)

Blocking and diluting buffer : 5% NFDM/TBST.

All lanes:

Western blot - Anti-Smad4 antibody [EP618Y] (ab40759) at 1/10000 dilution

All lanes:

NIH/3T3 (Mouse embyro fibroblast cell line) cell lysate at 20 µg

Secondary

All lanes:

Goat Anti-Rabbit IgG, (H+L), Peroxidase conjugated at 1/1000 dilution

Predicted band size: 60 kDa

Observed band size: 60 kDa

false

Western blot - Anti-Smad4 antibody [EP618Y] (AB40759)
  • WB

Unknown

Western blot - Anti-Smad4 antibody [EP618Y] (AB40759)

Blocking and diluting buffer : 5% NFDM/TBST.

All lanes:

Western blot - Anti-Smad4 antibody [EP618Y] (ab40759) at 1/5000 dilution

All lanes:

PC-12 (Rat adrenal gland pheochromocytoma cell line) cell lysate at 10 µg

Secondary

All lanes:

Goat Anti-Rabbit IgG, (H+L), Peroxidase conjugated at 1/1000 dilution

Predicted band size: 60 kDa

Observed band size: 60 kDa

false

Western blot - Anti-Smad4 antibody [EP618Y] (AB40759)
  • WB

Lab

Western blot - Anti-Smad4 antibody [EP618Y] (AB40759)

Blocking and dilution buffer : 5% NFDM/TBST.

All lanes:

Western blot - Anti-Smad4 antibody [EP618Y] (ab40759) at 1/5000 dilution

Lane 1:

NIH/3T3 (Mouse embyro fibroblast cell line) cell lysate at 20 µg

Lane 2:

Mouse embryo tissue lysate at 20 µg

Lane 3:

Mouse skin tissue lysate at 20 µg

Lane 4:

Mouse lung tissue lysate at 20 µg

Lane 5:

PC-12 (Rat adrenal gland pheochromocytoma cell line) cell lysate at 20 µg

Lane 6:

C6 cell lysate at 20 µg

Lane 7:

Rat skin tissue lysate at 20 µg

Lane 8:

Rat lung tissue lysate at 20 µg

Secondary

All lanes:

Western blot - Goat Anti-Rabbit IgG H&L (HRP) (<a href='/en-us/products/secondary-antibodies/goat-rabbit-igg-h-l-hrp-ab97051'>ab97051</a>) at 1/20000 dilution

Predicted band size: 60 kDa

Observed band size: 60 kDa

false

Exposure time: 3min

Key facts

Host species

Rabbit

Clonality

Monoclonal

Clone number

EP618Y

Isotype

IgG

Carrier free

No

Reacts with

Mouse, Rat, Human

Applications

WB, IHC-P

applications

Immunogen

The exact immunogen used to generate this antibody is proprietary information.

Reactivity data

{ "title": "Reactivity Data", "filters": { "stats": ["", "Species", "Dilution Info", "Notes"], "tabs": { "all-applications": {"fullname" : "All Applications", "shortname": "All Applications"}, "IHCP" : {"fullname" : "Immunohistochemistry (Formalin/PFA-fixed paraffin-embedded sections)", "shortname":"IHC-P"}, "IP" : {"fullname" : "Immunoprecipitation", "shortname":"IP"}, "FlowCyt" : {"fullname" : "Flow Cytometry", "shortname":"Flow Cyt"}, "WB" : {"fullname" : "Western blot", "shortname":"WB"}, "ICCIF" : {"fullname" : "Immunocytochemistry/ Immunofluorescence", "shortname":"ICC/IF"} }, "product-promise": { "all": "all", "testedAndGuaranteed": "tested", "guaranteed": "expected", "predicted": "predicted", "notRecommended": "not-recommended" } }, "values": { "Human": { "IHCP-species-checked": "testedAndGuaranteed", "IHCP-species-dilution-info": "1/100", "IHCP-species-notes": "<p></p> Perform heat-mediated antigen retrieval before commencing with IHC staining protocol.", "IP-species-checked": "notRecommended", "IP-species-dilution-info": "1/30", "IP-species-notes": "<p></p>", "FlowCyt-species-checked": "notRecommended", "FlowCyt-species-dilution-info": "1/130", "FlowCyt-species-notes": "<p><strong>For unpurified use at 1/20.</strong></p><p><a href='/en-us/products/primary-antibodies/rabbit-igg-monoclonal-epr25a-isotype-control-ab172730'>ab172730</a> - Rabbit monoclonal IgG, is suitable for use as an isotype control with this antibody.</p>", "WB-species-checked": "testedAndGuaranteed", "WB-species-dilution-info": "1/5000", "WB-species-notes": "<p></p>", "ICCIF-species-checked": "notRecommended", "ICCIF-species-dilution-info": "1/100", "ICCIF-species-notes": "<p><strong>For unpurified use at 1/100 - 1/250.</strong></p>" }, "Mouse": { "IHCP-species-checked": "guaranteed", "IHCP-species-dilution-info": "", "IHCP-species-notes": "", "IP-species-checked": "notRecommended", "IP-species-dilution-info": "1/30", "IP-species-notes": "<p></p>", "FlowCyt-species-checked": "notRecommended", "FlowCyt-species-dilution-info": "1/130", "FlowCyt-species-notes": "<p><strong>For unpurified use at 1/20.</strong></p><p><a href='/en-us/products/primary-antibodies/rabbit-igg-monoclonal-epr25a-isotype-control-ab172730'>ab172730</a> - Rabbit monoclonal IgG, is suitable for use as an isotype control with this antibody.</p>", "WB-species-checked": "testedAndGuaranteed", "WB-species-dilution-info": "1/5000", "WB-species-notes": "<p></p>", "ICCIF-species-checked": "notRecommended", "ICCIF-species-dilution-info": "1/100", "ICCIF-species-notes": "<p><strong>For unpurified use at 1/100 - 1/250.</strong></p>" }, "Rat": { "IHCP-species-checked": "guaranteed", "IHCP-species-dilution-info": "", "IHCP-species-notes": "", "IP-species-checked": "notRecommended", "IP-species-dilution-info": "1/30", "IP-species-notes": "<p></p>", "FlowCyt-species-checked": "notRecommended", "FlowCyt-species-dilution-info": "1/130", "FlowCyt-species-notes": "<p><strong>For unpurified use at 1/20.</strong></p><p><a href='/en-us/products/primary-antibodies/rabbit-igg-monoclonal-epr25a-isotype-control-ab172730'>ab172730</a> - Rabbit monoclonal IgG, is suitable for use as an isotype control with this antibody.</p>", "WB-species-checked": "testedAndGuaranteed", "WB-species-dilution-info": "1/5000", "WB-species-notes": "<p></p>", "ICCIF-species-checked": "notRecommended", "ICCIF-species-dilution-info": "1/100", "ICCIF-species-notes": "<p><strong>For unpurified use at 1/100 - 1/250.</strong></p>" } } }

Product details

Product Specifications
Anti-Smad4 antibody [EP618Y] (ab40759) was developed by Abcam using patented rabbit monoclonal antibody technology and is validated for use in IHC-P, WB in human, mouse, rat samples.
Anti-Smad4 antibody [EP618Y] (ab40759) specifically detects Smad4 (UniProt ID: Q13485; Molecular weight: 60kDa) and is sold in 100 µL and 1 mL selling sizes.

Quality and Validation
Abcam's high quality manufacturing and validation processes ensure Anti-Smad4 antibody [EP618Y] (ab40759) has high sensitivity and specificity alongside high lot-to-lot consistency and reproducibility.
The specificity of Anti-Smad4 antibody [EP618Y] (ab40759) has been confirmed by testing in knockout samples.
Anti-Smad4 antibody [EP618Y] (ab40759) has been cited over 170 times in peer reviewed journals and is trusted by the scientific community.
Anti-Smad4 antibody [EP618Y] (ab40759) has 9 independent reviews from customers.

Related Products
Antibody clone EP618Y is also available pre-conjugated to a variety of labels for your convenience - HRP, Alexa Fluor® 488, Alexa Fluor® 647, Alexa Fluor® 594, Alexa Fluor® 568, Alexa Fluor® 555, Alexa Fluor® 750 (ab195554, ab311050, ab311176, ab311831, ab313114, ab313307, ab321616).

Patented technology
Our RabMAb® technology is a patented hybridoma-based technology for making rabbit monoclonal antibodies. For details on our patents, please refer to RabMAb® patents.

What are the advantages of a recombinant monoclonal antibody?
This product is a recombinant monoclonal antibody, which offers several advantages including:

  • - High batch-to-batch consistency and reproducibility
  • - Improved sensitivity and specificity
  • - Long-term security of supply
  • - Animal-free batch production

For more information, read more on recombinant antibodies.

Properties and storage information

Form
Liquid
Purification technique
Affinity purification Protein A
Storage buffer
pH: 7.2 - 7.4 Preservative: 0.01% Sodium azide Constituents: PBS, 40% Glycerol (glycerin, glycerine), 0.05% BSA
Shipped at conditions
Blue Ice
Appropriate short-term storage duration
1-2 weeks
Appropriate short-term storage conditions
+4°C
Appropriate long-term storage conditions
-20°C
Aliquoting information
Upon delivery aliquot
Storage information
Avoid freeze / thaw cycle

Supplementary information

This supplementary information is collated from multiple sources and compiled automatically.

Smad4 also known as DPC4 or MADH4 is a central protein in the TGF-beta signaling pathway with a molecular mass of approximately 60 kDa. It acts as a signal transducer that facilitates communication from the cell surface to the nucleus. Smad4 is broadly expressed in various tissues playing an important role in the regulation of cellular processes. It forms a complex with receptor-regulated Smads (R-Smads) to translocate to the nucleus where it influences gene transcription.
Biological function summary

Smad4 influences cell proliferation differentiation and apoptosis by mediating signals from TGF-beta cytokines. It is part of the Smad protein family acting as a transcriptional controller. Upon TGF-beta receptor activation Smad4 forms complexes with Smad2 and Smad3 translocating to the nucleus to regulate genes imperative for cellular homeostasis. Its role in cell cycle regulation underlines its contribution to normal cellular functions and its potential involvement in disorders.

Pathways

Smad4 operates within the TGF-beta pathway linking extracellular signals to nuclear transcription alterations. It participates in the regulation of epithelial-mesenchymal transition (EMT) a process important for development and tumor progression. In these pathways Smad4 interacts closely with Smad2 and Smad3 orchestrating various cellular responses to external stimuli through transcriptional management.

Smad4 is highly related to cancer and juvenile polyposis syndrome. Mutations or deletions in Smad4 disrupt its function contributing to the progression of pancreatic cancer and colorectal cancer among others. Within these contexts Smad4 connects strongly to other proteins like p21 and cyclin-dependent kinase inhibitors which are important in cell cycle arrest and impede tumor growth.

Product protocols

For this product, it's our understanding that no specific protocols are required. You can visit:

Target data

In muscle physiology, plays a central role in the balance between atrophy and hypertrophy. When recruited by MSTN, promotes atrophy response via phosphorylated SMAD2/4. MSTN decrease causes SMAD4 release and subsequent recruitment by the BMP pathway to promote hypertrophy via phosphorylated SMAD1/5/8. Acts synergistically with SMAD1 and YY1 in bone morphogenetic protein (BMP)-mediated cardiac-specific gene expression. Binds to SMAD binding elements (SBEs) (5'-GTCT/AGAC-3') within BMP response element (BMPRE) of cardiac activating regions (By similarity). Common SMAD (co-SMAD) is the coactivator and mediator of signal transduction by TGF-beta (transforming growth factor). Component of the heterotrimeric SMAD2/SMAD3-SMAD4 complex that forms in the nucleus and is required for the TGF-mediated signaling (PubMed : 25514493). Promotes binding of the SMAD2/SMAD4/FAST-1 complex to DNA and provides an activation function required for SMAD1 or SMAD2 to stimulate transcription. Component of the multimeric SMAD3/SMAD4/JUN/FOS complex which forms at the AP1 promoter site; required for synergistic transcriptional activity in response to TGF-beta. May act as a tumor suppressor. Positively regulates PDPK1 kinase activity by stimulating its dissociation from the 14-3-3 protein YWHAQ which acts as a negative regulator.
See full target information SMAD4

Publications (204)

Recent publications for all applications. Explore the full list and refine your search

Antioxidants (Basel, Switzerland) 14: PubMed40867839

2025

Biomarker-Driven Optimization of Saponin Therapy in MASLD: From Mouse Models to Human Liver Organoids.

Applications

Unspecified application

Species

Unspecified reactive species

Hye Young Kim,Ju Hee Oh,Hyun Sung Kim,Dae Won Jun

Cell death & disease 16:529 PubMed40664638

2025

Modeling oxaliplatin resistance in colorectal cancer reveals a SERPINE1-based gene signature (RESIST-M) and therapeutic strategies for pro-metastatic CMS4 subtype.

Applications

Unspecified application

Species

Unspecified reactive species

Stephen Qi Rong Wong,Mohua Das,Kenzom Tenzin,Niranjan Shirgaonkar,Huiwen Chua,Lin Xuan Chee,Ahpa Sae Yeoh,Astley Aruna Murugiah,Wei Yong Chua,Madelaine Skolastika Theardy,Ethan Jadon Subel,Matan Thangavelu Thangavelu,Jane Vin Chan,Choon Kong Yap,Iain Bee Huat Tan,Petros Tsantoulis,Sabine Tejpar,Jia Min Loo,Ramanuj DasGupta

Cancers 17: PubMed40507242

2025

The Interplay of SMAD4 and EMT in Oral Squamous Cell Carcinoma.

Applications

Unspecified application

Species

Unspecified reactive species

Shiraz Mozalbat,Aysar Nashef,Naseem Maalouf,Murad Abdol-Elraziq,Imad Abu El-Naaj,Hagar Tadmor,Yasmin Ghantous

Journal of orthopaedic surgery and research 20:484 PubMed40390079

2025

LncRNA HCG18 regulates the progression of spinal tuberculosis by modulating the hsa-miR-146a-5p/TGF-β1/SMADs pathway.

Applications

Unspecified application

Species

Unspecified reactive species

Feng Li,Hongdong Tan,Xiao Zhang,Xiaodong Zhao,Xiaopeng Li,Gaoyang Chen

Cell communication and signaling : CCS 23:230 PubMed40382656

2025

Prkci promotes colorectal cancer metastasis by phosphorylating and stabilizing Tgfbr1 to activate TGF-β signaling.

Applications

Unspecified application

Species

Unspecified reactive species

Peng Li,Guangshi Liu,Wenbin Zhang,Tao Li

Clinical, cosmetic and investigational dermatology 18:845-857 PubMed40225311

2025

Human Fibroblast Growth Factor 9 Induces Hair Follicle Cycle Transition via TGF-β/BMP/Smad Pathway.

Applications

Unspecified application

Species

Unspecified reactive species

Bowen Zhang,Xue He,Yaxin Guo,Shengnan Zhao,Jing Lan,Fuqiang Chen,Long Wan,Haishan Tian,Xuegang Xu

Clinical epigenetics 16:156 PubMed39523345

2024

DNA methylation classifier to diagnose pancreatic ductal adenocarcinoma metastases from different anatomical sites.

Applications

Unspecified application

Species

Unspecified reactive species

Teodor G Calina,Eilís Perez,Elena Grafenhorst,Jamal Benhamida,Simon Schallenberg,Adrian Popescu,Ines Koch,Tobias Janik,BaoQing Chen,Jana Ihlow,Stephanie Roessler,Benjamin Goeppert,Bruno Sinn,Marcus Bahra,George A Calin,Eliane T Taube,Uwe Pelzer,Christopher C M Neumann,David Horst,Erik Knutsen,David Capper,Mihnea P Dragomir

Cell death & disease 15:818 PubMed39528473

2024

SMAD4 Limits PARP1 dependent DNA Repair to Render Pancreatic Cancer Cells Sensitive to Radiotherapy.

Applications

Unspecified application

Species

Unspecified reactive species

Yang Wang,Tianyu Yu,Zhangting Zhao,Xiaobing Li,Yiran Song,Yazhi He,Yingqun Zhou,Pu Li,Liwei An,Feng Wang

Discover oncology 15:410 PubMed39235706

2024

Knocking down RAD51AP1 enhances chemosensitivity by inhibiting the self-renewal of CD133 positive ovarian cancer stem-like cells.

Applications

Unspecified application

Species

Unspecified reactive species

Si-Heng Zeng,Zhi-Qiang Yan,Qing Ren,Li-Hui Lin,Zhen Chen

Cell proliferation 58:e13742 PubMed39219022

2024

CircSMAD3 represses VSMC phenotype switching and neointima formation via promoting hnRNPA1 ubiquitination degradation.

Applications

Unspecified application

Species

Unspecified reactive species

Shuai Mei,Xiaozhu Ma,Li Zhou,Qidamugai Wuyun,Ziyang Cai,Jiangtao Yan,Hu Ding
View all publications

Product promise

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