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Observations suggest that Muc4 may facilitate metastasis by promoting the association of circulating tumor cells with blood cells to augment tumor cell survival in circulation.
the role of Muc4 in driving intestinal inflammation and inflammation-associated tumorigenesis
Results show that while MUC4 is highly expressed in the mouse uterus, it is not a major mucin in normal human endometrium. Rather, MUC4 is a potential marker of endometrial adenocarcinoma in a subset of patients.
Using the Pdx1-Cre; LStopL-K-rasG12D mouse model of pancreatic carcinogenesis, in vivo early Muc4 neo-expression of in pancreatic intraepithelial neoplastic lesions induced by mutated hK-ras is correlated with the ERK, JNK and NF-kappaB signaling pathways.
Data show that Muc4 is upregulated and interacts with erbB2 in gallbladders from BK5.erbB2 mice suggesting its important role during gallbladder carcinogenesis and/or cancer growth by potentiating erbB2 signaling.
This study delineates the association and the downstream mechanisms of MUC4-regulated elevation of lipocalin-2 and its clinical significance for prognosis of pancreatic cancer.
MUC4-NIDO domain significantly contributes to the MUC4-mediated metastasis of PC cells
ErbB2 and MUC4, which interact physically, activate different intracellular signalling pathways to regulate biological properties of CAPAN-2 pancreatic cancer cells
full coding sequence was cloned and mapped to chromosome 16, it's highest levels of expression are in trachea and intestinal tract
As a luminal surface component, the MUC4 is situated to contribute to the non-adhesive luminal surface and to act as an intrinsic protection and survival factor for blood vessels
MUC4 is regulated at the transcriptional level by CDX-1 and -2, HNF-1 alpha and -1 beta, FOXA1/A2, HNF-4 alpha and -4 gamma, and GATA-4, -5, and -6 factors in a cell-specific manner
the expression of mucins 1 to 4 and trefoil factor 3 was down-regulated in the ileum and colon of conventional and reconventionalized mice compared with germ-free animals
Butyrate enemas upregulate Muc4 gene expression but decrease adherent mucus thickness in mice colon.
The membranous mucin, MUC4, can compensate for the deficiency of the secretory mucin, MUC5AC, in goblet cell deficient mice.
MUC4 immunohistochemistry is useful for differentiation of epithelioid mesothelioma from lung carcinoma, either adenocarcinoma or squamous cell carcinoma.
These findings highlight a new role for Galectin 3 as a non-classic RNA-binding protein that regulates MUC4 mRNA post-transcriptionally.
The detection of MUC4 and/or MUC6 might be a powerful parameter in the clinical management of mucoepidermoid carcinoma in the early postsurgical phase.
High MUC4 expression is associated with Invasive micropapillary carcinoma of the breast.
MUC4/X facilitated pancreatic cancer (PC) tumorigenesis via integrin-beta1/FAK/ERK signaling pathway. Overall, these findings revealed the novel role of MUC4/X in promoting and sustaining the oncogenic features of PC.
auranofin could regulate the Her2/Akt/FOXO3 signaling pathway in SKOV3 cells and be used as a potential antitumor agent considering the expression of MUC4 in ovarian cancer patients.
In uninflamed CD ileum and IBD colon, most barrier gene levels restored to normal, except for MUC1 and MUC4 that remained persistently increased compared with controls. Genetic and transcriptomic dysregulations of key epithelial barrier genes and components in IBD. In particular MUC1 and MUC4, play an essential role in the pathogenesis of IBD and could represent interesting targets for treatment.
TNFalpha induced upregulation of MUC4 that reduced trastuzumab binding to its epitope and impaired ADCC. Silencing MUC4 enhanced trastuzumab binding, increased ADCC, and overcame trastuzumab and trastuzumab-emtansine antiproliferative effects in TNFalpha-overexpressing cells. In HER2-positive breast cancer samples, MUC4 expression was found to be an independent predictor of poor disease-free survival.
MUC4 is a novel and useful negative immunohistochemical marker for differentiating sarcomatoid mesothelioma from lung sarcomatoid carcinoma
NIDO, AMOP and vWD domains of MUC4 play synergic roles in MUC4 mediated signaling in pancreatic cancer cells.
MUC1 and MUC4 expression are increased by hypoxia and DNA hypomethylation; this status is statistically associated with development of distant metastasis, tumor stage and overall survival for pancreatic ductal adenocarcinoma (stage IIA and IIB) patients
Study provides evidence that AMOP domain plays the key role in MUC4-mediated tumor angiogenesis and metastasis of pancreatic cancer cells partly through the NOTCH3 signaling and its downstream target genes: VEGF-A, MMP-9 and ANG-2.
elevated levels of bile acid increase the tumorigenic potential of pancreatic cancer cells by inducing FXR/FAK/c-Jun axis to upregulate MUC4 expression.
High MUC4 expression is associated with CRLF2-rearranged acute lymphoblastic leukemia.
Within this review, we highlight both the processes involved in the expression of aberrant glycan structures on mucins, as well as the potential downstream impacts on cellular signaling.
Low expression of MUC4 was associated with favorable survival, whereas high MUC4 expression did not correlate with survival in resectable pancreatic cancer patients receiving adjuvant gemcitabine treatment.
the present study provides evidence that hypoxia negatively regulates MUC4 expression in PC by affecting its stability.
Studies indicate that a positive or high expression level of mucin 4 (MUC4) was significantly related to poor survival in patients with resected cholangiocarcinoma (CC).
MUC4beta participates in the corticosteroid resistance process, inhibiting normal GRalpha nuclear function. The high expression of MUC4 in patients with CRSwNP might participate in corticosteroid resistance.
Data indicate that microRNA miR-211 can directly target the 3'UTR of mucin-4 (MUC4) and inhibit its expression at both mRNA and protein levels.
Polymorphism of FUT1 and MUC4 associated with resistance to colibacteriosis was determined.
Haplotype phylogeny analyses indicated that MUC4 had evolved divergently in Chinese and Western pigs.
A SNP in exon 7 of the mucin 4 (MUC4) gene (DQ848681:g.8227C>G), shown to be in close linkage disequilibrium with the F4bcR locus, has been used as marker to identify ETEC susceptible pigs.
data suggest that MUC4 could play an important role in the establishment of an optimal uterine environment that would increase embryonic survival during pig gestation
The major constituents of mucus, the viscous secretion that covers epithelial surfaces such as those in the trachea, colon, and cervix, are highly glycosylated proteins called mucins. These glycoproteins play important roles in the protection of the epithelial cells and have been implicated in epithelial renewal and differentiation. This gene encodes an integral membrane glycoprotein found on the cell surface, although secreted isoforms may exist. At least two dozen transcript variants of this gene have been found, although for many of them the full-length transcript has not been determined or they are found only in tumor tissues. This gene contains a region in the coding sequence which has a variable number (>100) of 48 nt tandem repeats.
, mucin 4, ASGP
, pancreatic adenocarcinoma mucin
, testis mucin
, mucin 4, tracheobronchial
, tracheobronchial mucin
, pre-sialomucin complex
, sialomucin ascites sialoglycoprotein-1
, sialomucin complex