Intra-assay Precision (Precision within an assay): CV%<8%
Three samples of known concentration were tested twenty times on one plate to assess.
Inter-assay Precision (Precision between assays): CV%<10%
Three samples of known concentration were tested in twenty assays to assess.
線性度:
To assess the linearity of the assay, samples were spiked with high concentrations of human DAG1 in various matrices and diluted with the Sample Diluent to produce samples with values within the dynamic range of the assay.
Sample
Serum(n=4)
1:1
Average %
92
Range %
86-98
1:2
Average %
98
Range %
93-103
1:4
Average %
96
Range %
91-102
1:8
Average %
95
Range %
87-99
回收率:
The recovery of human DAG1 spiked to levels throughout the range of the assay in various matrices was evaluated. Samples were diluted prior to assay as directed in the Sample Preparation section.
Sample Type
Average % Recovery
Range
Serum (n=5)
94
88-97
EDTA plasma (n=4)
88
81-94
標準曲線:
These standard curves are provided for demonstration only. A standard curve should be generated for each set of samples assayed.
The dystroglycan complex is involved in a number of processes including laminin and basement membrane assembly, sarcolemmal stability, cell survival, peripheral nerve myelination, nodal structure, cell migration, and epithelial polarization.; Extracellular peripheral glycoprotein that acts as a receptor for extracellular matrix proteins containing laminin-G domains. Receptor for laminin-2 (LAMA2) and agrin in peripheral nerve Schwann cells. Also acts as a receptor for laminin LAMA5.; Transmembrane protein that plays important roles in connecting the extracellular matrix to the cytoskeleton. Acts as a cell adhesion receptor in both muscle and non-muscle tissues. Receptor for both DMD and UTRN and, through these interactions, scaffolds axin to the cytoskeleton. Also functions in cell adhesion-mediated signaling and implicated in cell polarity.; (Microbial infection) Acts as a receptor for lassa virus and lymphocytic choriomeningitis virus glycoprotein and class C new-world arenaviruses. Acts as a Schwann cell receptor for Mycobacterium leprae, the causative organism of leprosy, but only in the presence of the G-domain of LAMA2.
基因功能參考文獻:
Study identified beta-dystroglycan as a substrate of WWP1 and found that the muscular dystrophy-causing mutation of WWP1 renders the enzyme hyperactive by relieving autoinhibition. PMID: 29635000
ISPD and FKTN are essential for the incorporation of ribitol into alpha-dystroglycan. PMID: 27194101
N-terminal alpha Dystroglycan ELISA signals were significantly reduced in Duchenne muscular dystrophy serum relative to serum from otherwise normal controls. PMID: 27854211
TMEM5 is a UDP-xylosyl transferase that elaborates the O-mannose glycan structure on alpha-dystroglycan. The authors demonstrate in a zebrafish model as well as in a human patient that defects in TMEM5 result in muscular dystrophy in combination with abnormal brain development. PMID: 27130732
Our results strongly suggest that the balance and integrity between the dystroglycan alpha and beta subunits are indispensable and responsible for the cell differentiation and proliferation in acute leukemia cells. PMID: 28591567
interation of DG with laminin and dynamin is involved in the regulation of AQP4 internalization PMID: 27788222
The Muscular Dystrophy Gene TMEM5 Encodes a Ribitol beta1,4-Xylosyltransferase Required for the Functional Glycosylation of Dystroglycan. PMID: 27733679
Data show that CD93 antigen proved to be phosphorylated on tyrosine 628 and 644 following cell adhesion on laminin through dystroglycan. PMID: 26848865
alpha-DG-N removal as an important posttranslational control of endometrial receptivity and uterine fluid alpha-DG-N as a potential biomarker for receptivity in women. PMID: 26077903
Phosphorylation within the cysteine-rich region of dystrophin enhances its association with beta-dystroglycan and identifies a potential novel therapeutic target for skeletal muscle wasting. PMID: 25082828
Novel mutations in DAG1 are associated with asymptomatic hyperCKemia with hypoglycosylation of alpha-dystroglycan. PMID: 25503980
Reduction of alpha-dystroglycan expression is correlated with glioma. PMID: 25139094
Depletion of DAG resulted in altered morphology and reduced properties of differentiated HL-60 cells, including chemotaxis, respiratory burst, phagocytic activities and markers of differentiation, implicating DAG as a protein involved in differentiation. PMID: 24792180
A report of a homozygous novel DAG1 missense mutation c.2006G>T in the beta-subunit of dystroglycan in two Libyan siblings with with a novel muscle-eye-brain disease-like phenotype with multicystic leucodystrophy. PMID: 24052401
The study provides evidence for at least three separate pools of dystroglycan complexes within myofibers that differ in composition and are differentially affected by loss of dystrophin. PMID: 23951345
These data suggest that proteolysis, tyrosine phosphorylation and translocation of dystroglycan to the nucleus resulting in altered gene transcription could be important mechanisms in the progression of prostate cancer. PMID: 24077328
T192M point-mutation in dystroglycan leads to a weaker interactions with laminin-1, which leads to hypoglycosylation and which finally leads to the limb girdle disease. PMID: 24361964
GTDC2 generates CTD110.6 antibody-reactive N-acetylglucosamine epitopes on the O-mannosylated alpha-dystroglycan. PMID: 24041696
the Dystroglycan-mediated cortical microtubule anchoring, the disruption of which initiates gastrulation EMT. PMID: 23940118
Loss of alpha-dystroglycan and increased CD133 expression are frequent events in human colon cancer and evaluation of CD133 expression could help to identify high-risk colon cancer patients. PMID: 22964035
Loss of LARGE2 disrupts functional glycosylation of alpha-dystroglycan in prostate cancer PMID: 23223448
The loss of dystroglycan during tumorigenesis leads to an increased ability for tumor growth. PMID: 22996647
novel role for HNK-1ST as a tumor suppressor controlling the functional glycans on alpha-DG and the importance of sulfate transfer in the glycosylation of alpha-DG. PMID: 22801424
Dynamics of expression patterns of dystroglycan in human glioblastoma PMID: 22307776
The virus-induced perturbation of alpha6beta1 integrin signalling critically depended on high-affinity Lassa virus binding to dystroglycan and dystroglycan's cytoplasmic domain. PMID: 22405130
Data suggest that throughout pregnancy, changes occur in expression and distribution of DAG1 and dystroglycan subunits in placental tissues undergoing placentation. PMID: 22138543
a mechanism by which Large competes with galactosyltransferase to target GlcNAc terminals to induce the functional glycans on alpha-DG PMID: 21347376
Reduced expression and altered localization of dystroglycan is common in pancreatic cancer, potentially contributing to the aggressive behavior of this disease. PMID: 20338590
the ligand-binding activity of alpha-dystroglycan is conferred primarily by LARGE modification at Thr-317 and -319, within the highly conserved first 18 amino acids of the mucin-like domain PMID: 21987822
These observations suggest that secreted alpha-DG-N may be transported via CSF and have yet unidentified effects on the nervous system. PMID: 21741360
LARGE has a role in inducing alpha-dystroglycan hyperglycosylation in skeletal and cardiac muscle PMID: 21203384
Ameloblastoma cells proliferate and are differentiated by capturing perlecan differentially with alpha-dystroglycan and integrin beta1, respectively PMID: 21255062
Data show that loss of nuclear p27(kip1) is a frequent event in human RCCs and is a powerful predictor of poor outcome which, in combination with low DG expression, could help to identify high-risk patients with clear cell RCC. PMID: 20626751
Beta-Dystroglycan interaction with caveolin-1 in smooth muscle is required for receptor-mediated Ca2+ release. PMID: 20736308
Twenty-five glycopeptides were characterized from human alpha-dystroglycan, which provide insight to the complex in vivo O-glycosylation of alpha-dystroglycan. PMID: 20507882
Biological role of dystroglycan in Schwann cell function, especially myelination, and its implications in diseases is reviewed. PMID: 20625412
Loss of alpha-dystroglycan expression is a frequent event in human oral squamous cell carcinoma PMID: 20350218
analysis of the main cleavage site involved in enzymatic processing of beta-dystroglycan recombinant ectodomain by MMP-9 PMID: 19946898
study identified phosphorylated O-mannosyl glycan on mucin-like domain of alpha-DG, which was required for laminin binding; patients with muscular dystrophy have defects in a postphosphoryl modification of this phosphorylated O-linked mannose PMID: 20044576
Post-translational disruption of dystroglycan-ligand interactions in congenital muscular dystrophies. PMID: 12140558
Glomeruli possess large amounts of a specifically composed complex; this complex may undergo changes in human glomerular disease; and flattening of foot processes is directly associated with dissociation of laminin-dystroglycan complexes. PMID: 12386278
hAG-2 and hAG-3, human homologues of genes involved in differentiation, are associated with oestrogen receptor-positive breast tumours and interact with metastasis gene C4.4a and dystroglycan. PMID: 12592373
Expression is frequently reduced in human breast and colon cancers and is associated with tumor progression. PMID: 12598319
in human coxsackievirus B myocarditis a focal disruption of the DAG can principally occur and may contribute to the pathogenesis of human enterovirus-induced dilated cardiomyopathy PMID: 12920582
mutation of certain residues prevents both ezrin binding and the induction of actin-rich surface protrusions PMID: 15175275
Cells that are defective in components of the O-mannosylation pathway showed strikingly reduced lymphocytic choriomeningitis virus infectbility. PMID: 16254364
alpha-DG glycosylation may differ between neurons and glial cells in congenital musculaar dystrophy brains. PMID: 16466646
DG may be involved in the progression of primary brain tumors PMID: 16575202
Fukutin seems to bind to both the hypoglycosylated and fully glycosylated form of alpha-dystroglycan, and seems bind to the core area rather than the sugar chain of alpha-dystroglycan PMID: 17005282
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相關疾病:
Muscular dystrophy-dystroglycanopathy limb-girdle C9 (MDDGC9); Muscular dystrophy-dystroglycanopathy congenital with brain and eye anomalies A9 (MDDGA9)
Expressed in a variety of fetal and adult tissues. In epidermal tissue, located to the basement membrane. Also expressed in keratinocytes and fibroblasts.