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SMAD family member 4

Smad4, DPC4
This gene encodes a member of the Smad family of signal transduction proteins. Smad proteins are phosphorylated and activated by transmembrane serine-threonine receptor kinases in response to TGF-beta signaling. The product of this gene forms homomeric complexes and heteromeric complexes with other activated Smad proteins, which then accumulate in the nucleus and regulate the transcription of target genes. This protein binds to DNA and recognizes an 8-bp palindromic sequence (GTCTAGAC) called the Smad-binding element (SBE). The Smad proteins are subject to complex regulation by post-translational modifications. Mutations or deletions in this gene have been shown to result in pancreatic cancer, juvenile polyposis syndrome, and hereditary hemorrhagic telangiectasia syndrome. [provided by RefSeq, Oct 2009] (from NCBI)
Top mentioned proteins: p53, TGF-beta, HAD, CAN, p16
Papers using Smad4 antibodies
Smad4 is required for the normal organization of the cartilage growth plate
Supplier
Glimcher Laurie H et al., In The EMBO Journal, 2004
... (Santa Cruz); anti-Smad2, anti-phospho-Smad1/5/8, anti-phospho-Smad2 (S465/467), and anti-phospho-p38 (Cell Signaling); anti-Smad1 (Invitrogen); anti-Flag (M2, Sigma); anti-Smad4 (Abcam); anti-XIAP (Stressgen); and anti-GAPDH ...
Transforming growth factor-beta-induced inhibition of myogenesis is mediated through Smad pathway and is modulated by microtubule dynamic stability
Supplier
Kapus András et al., In The Journal of Cell Biology, 2003
tubulin (Sigma-Aldrich), cofilin, Smad2, phospho-Smad3, Smad4 (Cell Signaling Technology), c-Myc (clone 9E10), ...
Insulin-like growth factor-I inhibits transcriptional responses of transforming growth factor-beta by phosphatidylinositol 3-kinase/Akt-dependent suppression of the activation of Smad3 but not Smad2.
Supplier
Nurminsky Dmitry I., In PLoS ONE, 2002
... ab65252), HDAC4 (Cell Signaling, #2072), HAND2 (Abcam, ab56590), Tropomyosin C (Santacruz, sc73225), DnaJB1 (Santacruz, sc-1800) and SMAD4 (Abcam, ab1341) ...
CHMP5 is essential for late endosome function and down-regulation of receptor signaling during mouse embryogenesis
Supplier
Ghosh Sankar et al., In The Journal of Cell Biology, 1999
... The antibodies used were anti–phospho-Erk1/2 (Cell Signaling Technology), anti–phospho-Smad2 (Cell Signaling Technology), anti-Smad4 (Santa Cruz Biotechnology, Inc; H552), anti-Smad2 (Cell ...
Regulation of growth and prostatic marker expression by activin A in an androgen-sensitive prostate cancer cell line LNCAP
Supplier
Nishio K et al., In British Journal of Cancer, 1996
... The following antibodies were used: anti-p21, anti-cdk2, anti-cyclin D, anti-phospho-Rb, anti-Smad2, anti-phospho-Smad2, anti-Smad3, anti-Smad4, and secondary antibodies (Cell Signaling, Beverly, MA, USA); anti- ...
Papers on Smad4
Gene set enrichment analysis of pathways and transcription factors associated with diabetic retinopathy using a microarray dataset.
New
Liu et al., Hefei, China. In Int J Mol Med, 22 Jun 2015
Finally, co-expression networks of related pathways were constructed using the significant core genes and TFs, such as PPARγ and SMAD4.
Activin A, B and AB decrease progesterone production by down-regulating StAR in human granulosa cells.
New
Leung et al., Shanghai, China. In Mol Cell Endocrinol, 19 Jun 2015
Furthermore, the knockdown of SMAD4 or SMAD2 but not SMAD3 abolished the inhibitory effects of all three activin isoforms on StAR expression.
Targeted deep sequencing of mucinous ovarian tumors reveals multiple overlapping RAS-pathway activating mutations in borderline and cancerous neoplasms.
New
Anglesio et al., Vancouver, Canada. In Bmc Cancer, 19 Jun 2015
RESULTS: We detected mutations in KRAS, TP53, CDKN2A, PIK3CA, PTEN, BRAF, FGFR2, STK11, CTNNB1, SRC, SMAD4, GNA11 and ERBB2.
Sequential cancer mutations in cultured human intestinal stem cells.
New
Impact
Clevers et al., Utrecht, Netherlands. In Nature, 07 Jun 2015
Here we utilize CRISPR/Cas9 technology for targeted gene modification of four of the most commonly mutated colorectal cancer genes (APC, P53 (also known as TP53), KRAS and SMAD4) in cultured human intestinal stem cells.
Ultra-deep targeted sequencing of advanced oral squamous cell carcinoma identifies a mutation-based prognostic gene signature.
New
Yen et al., Taiwan. In Oncotarget, 25 May 2015
A mutation-based signature affecting ten genes (HRAS, BRAF, FGFR3, SMAD4, KIT, PTEN, NOTCH1, AKT1, CTNNB1, and PTPN11) was devised to predict DFS.
Pathogenesis of cholangiocarcinoma: From genetics to signalling pathways.
Review
New
Teh et al., Singapore, Singapore. In Best Pract Res Clin Gastroenterol, 30 Apr 2015
A series of highly recurrent mutations in genes such as TP53, KRAS, SMAD4, BRAF, MLL3, ARID1A, PBRM1 and BAP1, which are known to be involved in cell cycle control, cell signalling pathways and chromatin dynamics, have led to investigations of their roles, through molecular to mouse modelling studies, in cholangiocarcinogenesis.
MicroRNA-144 dysregulates the transforming growth factor-β signaling cascade and contributes to the development of bronchiolitis obliterans syndrome after human lung transplantation.
New
Mohanakumar et al., Saint Louis, United States. In J Heart Lung Transplant, 27 Apr 2015
In vitro transfection confirmed that over-expression of miR-144 results in a reduction in TGIF1 and an increase in SMAD2, SMAD4, fibroblast growth factor-6, TGF-β, and vascular endothelial growth factor.
Modeling colorectal cancer using CRISPR-Cas9-mediated engineering of human intestinal organoids.
New
Impact
Sato et al., Tokyo, Japan. In Nat Med, Mar 2015
By modulating the culture conditions to mimic that of the intestinal niche, we selected isogenic organoids harboring mutations in the tumor suppressor genes APC, SMAD4 and TP53, and in the oncogenes KRAS and/or PIK3CA.
Whole genomes redefine the mutational landscape of pancreatic cancer.
New
Impact
Grimmond et al., Brisbane, Australia. In Nature, Mar 2015
Chromosomal rearrangements leading to gene disruption were prevalent, affecting genes known to be important in pancreatic cancer (TP53, SMAD4, CDKN2A, ARID1A and ROBO2) and new candidate drivers of pancreatic carcinogenesis (KDM6A and PREX2).
Genetic diagnosis of high-penetrance susceptibility for colorectal cancer (CRC) is achievable for a high proportion of familial CRC by exome sequencing.
New
Impact
Houlston et al., London, United Kingdom. In J Clin Oncol, Mar 2015
PATIENTS AND METHODS: To quantify the impact of germline mutation to familial CRC, we sequenced the mismatch repair genes (MMR) APC, MUTYH, and SMAD4/BMPR1A in 626 early-onset familial CRC cases ascertained through a population-based United Kingdom national registry.
Novel targets in pancreatic cancer research.
Review
New
Brody et al., Philadelphia, United States. In Semin Oncol, Feb 2015
For example, PDA is driven by key activating, gain-of-function mutations in proto-oncogenes (eg, K-Ras) along with loss of function of tumor suppressor genes (eg, p16, SMAD4).
SMAD4 and its role in pancreatic cancer.
Review
New
Qiu et al., Shanghai, China. In Tumour Biol, Jan 2015
SMAD4, as one of the Smads family of signal transducer from TGF-β, mediates pancreatic cell proliferation and apoptosis and is specifically inactivated in half of advanced pancreatic cancers.
Hereditary hemorrhagic telangiectasia: genetics and molecular diagnostics in a new era.
Review
New
Bayrak-Toydemir et al., Salt Lake City, United States. In Front Genet, Dec 2014
More recently, two additional genes in the same pathway, SMAD4 and GDF2, have been identified in a much smaller number of patients with a similar or overlapping phenotype to HHT.
Diagnosis and molecular aspects of solid-pseudopapillary neoplasms of the pancreas.
Review
New
Cavard et al., Paris, France. In Semin Diagn Pathol, Nov 2014
Distinctive molecular alterations such as the presence of CTNNB1 mutations are observed in nearly all cases, while mutations classically observed in ductal adenocarcinoma, such as KRAS, TP53, and SMAD4, are not observed in SPNs, reinforcing its distinct nature compared to all other pancreatic neoplasms.
Ordering of mutations in preinvasive disease stages of esophageal carcinogenesis.
New
Impact
OCCAMS Consortium et al., Cambridge, United Kingdom. In Nat Genet, Aug 2014
Only TP53 and SMAD4 mutations occurred in a stage-specific manner, confined to HGD and EAC, respectively.
MicroRNA-146a modulates TGF-beta1-induced hepatic stellate cell proliferation by targeting SMAD4.
GeneRIF
Li et al., Hefei, China. In Cell Signal, 2012
Bioinformatics analyses predict that Smad4 is the potential target of miR-146a.
Vascular smooth muscle cell Smad4 gene is important for mouse vascular development.
GeneRIF
Chen et al., Birmingham, United States. In Arterioscler Thromb Vasc Biol, 2012
Provide important insight into the role of Smad4 and its upstream Smads in regulating vascular smooth muscle function and vascular development of mice.
Transforming growth factor-β/SMAD Target gene SKIL is negatively regulated by the transcriptional cofactor complex SNON-SMAD4.
GeneRIF
Macías-Silva et al., Mexico. In J Biol Chem, 2012
when the SNON-SMAD4 complex is absent as in some cancer cells lacking SMAD4 the regulation of some TGF-beta target genes is modified
Dynamics of TGF-β signaling reveal adaptive and pulsatile behaviors reflected in the nuclear localization of transcription factor Smad4.
GeneRIF
Brivanlou et al., New York City, United States. In Proc Natl Acad Sci U S A, 2012
TGF-beta signaling has a role in nuclear localization of transcription factor Smad4
Mutations of SMAD4 account for both LAPS and Myhre syndromes.
GeneRIF
Thibodeau et al., In Am J Med Genet A, 2012
Missense mutations of SMAD4 account for both LAPS and Myhre syndromes.
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