Human proteoglycan 4(PRG4) ELISA Kit
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中文名称：
人蛋白聚糖4(PRG4)酶联免疫试剂盒
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货号：
CSB-E14124h
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规格：
96T/48T
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价格：
￥3600/￥2500
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其他：
产品详情
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产品描述：
人蛋白聚糖4（PRG4）酶联免疫试剂盒（货号：CSB-E14124h）是一款基于双抗体夹心法定量检测人血清、血浆及组织匀浆样本中PRG4蛋白浓度的科研工具。PRG4又称润滑素（Lubricin），是一种由关节滑膜细胞和软骨细胞分泌的糖蛋白，在维持关节润滑、减少软骨磨损及调控炎症反应中发挥关键作用，其表达水平与骨关节炎、类风湿性关节炎等疾病的病理进程密切相关。本试剂盒检测灵敏度为0.78 ng/ml，线性范围覆盖0.78-50 ng/ml，采用高特异性配对抗体捕获目标蛋白，通过预包被捕获抗体、生物素标记检测抗体及HRP-链霉亲和素显色系统实现精准定量，实验步骤简便，仅需约4小时即可完成检测，且样本无需复杂预处理。该产品适用于关节炎机制研究、药物开发中生物标志物分析，或体外模型中PRG4表达水平的动态监测，为探索关节退行性疾病病理机制及潜在治疗靶点提供可靠工具。
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别名：
PRG4 ELISA Kit; MSF ELISA Kit; SZP ELISA Kit; Proteoglycan 4 ELISA Kit; Lubricin ELISA Kit; Megakaryocyte-stimulating factor ELISA Kit; Superficial zone proteoglycan) [Cleaved into: Proteoglycan 4 C-terminal part] ELISA Kit
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缩写：
PRG4
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Uniprot No.：
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种属：
Homo sapiens (Human)
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样本类型：
serum, plasma and tissue homogenates.
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检测范围：
0.78 ng/ml-50 ng/ml.
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灵敏度：
0.195 ng/ml
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反应时间：
1-5h
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样本体积：
50-100ul
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检测波长：
450 nm
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研究领域：
Others
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测定原理：
quantitative
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测定方法：
Sandwich
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精密度：
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. | | |
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线性度：
To assess the linearity of the assay, samples were spiked with high concentrations of human PRG4 in various matrices and diluted with the Sample Diluent to produce samples with values within the dynamic range of the assay. |
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| Sample | Serum(n=4) | |
1:1 | Average % | 109 | |
Range % | 102-115 | |
1:2 | Average % | 100 | |
Range % | 95-106 | |
1:4 | Average % | 94 | |
Range % | 89-100 | |
1:8 | Average % | 101 | |
Range % | 96-107 | |
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回收率：
The recovery of human PRG4 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. |
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Sample Type | Average % Recovery | Range | |
Serum (n=5) | 100 | 96-106 | |
EDTA plasma (n=4) | 96 | 90-101 | |
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标准曲线：
These standard curves are provided for demonstration only. A standard curve should be generated for each set of samples assayed. |
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| | | | | | |
ng/ml | OD1 | OD2 | Average | Corrected | |
50 | 2.524 | 2.634 | 2.579 | 2.406 | |
25 | 1.902 | 1.967 | 1.934 | 1.762 | |
12.5 | 1.286 | 1.228 | 1.257 | 1.084 | |
6.25 | 0.840 | 0.829 | 0.835 | 0.662 | |
3.12 | 0.476 | 0.451 | 0.464 | 0.291 | |
1.56 | 0.385 | 0.373 | 0.379 | 0.206 | |
0.78 | 0.264 | 0.274 | 0.269 | 0.096 | |
0 | 0.170 | 0.175 | 0.173 | | |
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本试剂盒所含材料：
- A micro ELISA plate --- The 96-well plate has been pre-coated with an anti-human PRG4 antibody. This dismountable microplate can be divided into 12 x 8 strip plates.
- Two vials lyophilized standard ---Dilute a bottle of the standard at dilution series, read the OD values, and then draw a standard curve.
- One vial Biotin-labeled PRG4 antibody (100 x concentrate) (120 μl/bottle) ---Act as the detection antibody.
- One vial HRP-avidin (100 x concentrate) (120 μl/bottle) ---Bind to the detection antibody and react with the TMB substrate to make the solution chromogenic.
- One vial Biotin-antibodyDiluent (15 ml/bottle) ---Dilute the Biotin-antibody.
- One vial HRP-avidin Diluent (15 ml/bottle) ---Dilute the HRP-avidin solution.
- One vial Sample Diluent (50 ml/bottle)---Dilute the sample to an appropriate concentration.
- One vial Wash Buffer (25 x concentrate) (20 ml/bottle) ---Wash away unbound or free substances.
- One vial TMB Substrate (10 ml/bottle) ---Act as the chromogenic agent. TMB interacts with HRP, eliciting the solution turns blue.
- One vial Stop Solution (10 ml/bottle) ---Stop the color reaction. The solution color immediately turns from blue to yellow.
- Four Adhesive Strips (For 96 wells) --- Cover the microplate when incubation.
- An instruction manual
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本试剂盒不含材料：
- A microplate reader capable of measuring absorbance at 450 nm, with the correction wavelength set at 540 nm or 570 nm.
- An incubator can provide stable incubation conditions up to 37°C±5°C.
- Centrifuge
- Vortex
- Squirt bottle, manifold dispenser, or automated microplate washer
- Absorbent paper for blotting the microtiter plate
- 50-300ul multi-channel micropipette
- Pipette tips
- Single-channel micropipette with different ranges
- 100ml and 500ml graduated cylinders
- Deionized or distilled water
- Timer
- Test tubes for dilution
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数据处理：
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货期：
3-5 working days
引用文献
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Load-induced blood marker kinetics in patients with medial knee compartment osteoarthritis are associated with accumulated load and patient reported outcome measures[version 2; peer review: 1 approved, 1 approved with
A Mündermann,/,2024
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An exploratory study to investigate the association between age, physical activity, femoral trochlear cartilage thickness and biomarkers of tissue metabolism in adult males
Harry M. Roberts,European Journal Of Applied Physiology,2021
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TIMP3/TGF‑β1 axis regulates mechanical loading‑induced chondrocyte degeneration and angiogenesis
DL Zhao,Molecular Medicine Reports,2020
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The effect of vigorous running and cycling on serum COMP, lubricin, and femoral cartilage thickness: a pilot study
Roberts HM.et al,Eur J Appl Physiol.,2016
靶点详情
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最新研究进展：
PRG4是一种天然润滑蛋白，广泛存在于人体关节、肌腱和韧带等结缔组织中。最近的研究表明，PRG4参与了许多关节炎和骨骼疾病的发生和发展过程，如骨关节炎、类风湿性关节炎和骨质疏松等。此外，PRG4还可能参与肌肉萎缩和心脏病等疾病的发生和发展。
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功能：
Plays a role in boundary lubrication within articulating joints. Prevents protein deposition onto cartilage from synovial fluid by controlling adhesion-dependent synovial growth and inhibiting the adhesion of synovial cells to the cartilage surface.; Isoform F plays a role as a growth factor acting on the primitive cells of both hematopoietic and endothelial cell lineages.
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基因功能参考文献：
- Inflammatory Biomarker Profiling in Total Joint Arthroplasty and Its Relevance to Circulating Levels of Lubricin, a Novel Proteoglycan. PMID: 29683034
- Intra-articular injection of human PRG4 in vivo in Prg4-/- mice prevented caspase-3 activation in superficial zone chondrocytes and was associated with a modest decrease in whole joint friction. PMID: 28604608
- PRG4 plays an important anti-inflammatory role in regulating osteoarthritis synoviocyte proliferation. PMID: 28482921
- IL6 and PRG4 represent potential novel tissue biomarkers of disease severity and prognosis in conjunctival fibrosis after glaucoma surgery. PMID: 28975281
- adult talar cartilage increases both PRG4 release and biosynthetic activity as immediate cellular response to injury PMID: 27551813
- Double knockdown of PRG4 and IL-24 did not inhibit myxoid liposarcoma (MLS)- cell growth, and single knockdown of PRG4 remarkably increased IL-24 expression. These results suggest that the growth inhibitory effect of PRG4 knockdown is caused by induction of IL-24 expression, and PRG4 may contribute to maintain MLS cell growth through repression of IL-24 expression. PMID: 28192118
- lubricin expression may typify adaptive and neoplastic changes along a pathway toward fibroblast-like synoviocytes PMID: 26924731
- PRG4 binds to TLR2 and TLR4 and this binding mediates a novel anti-inflammatory role for PRG4. PMID: 26643105
- Cartilage derived from MSCs expressed lubricin protein both in vitro and in vivo PMID: 26867127
- no synovial fluid level differences detected between healthy knees and injured knees PMID: 26037740
- The finding that rhPRG4 can increase the viscosity of low concentration HA solutions suggests that supplementation with rhPRG4 may help mitigate the loss in synovial fluid viscosity experienced with decreased HA concentration in osteoarthritis. PMID: 25818000
- PRG4 is a novel putative ligand for CD44 and may control synoviocyte overgrowth in inflammatory arthropathies via a CD44-mediated mechanism. PMID: 25708025
- The O-glycomap of lubricin, a novel mucin responsible for joint lubrication, has been identified by site-specific glycopeptide analysis. PMID: 25187573
- Lubricin (Prg4) plays a role in preventing damage to the superficial zone and preservation of chondrocytes. [Review] PMID: 25172828
- 5 novel PRG4 mutations and the first case of CACP syndrome resulting from uniparental disomy of chromosome 1. PMID: 23756439
- We speculate that an important role of lubricin in mediating interactions at the cartilage surface is to attach to the cartilage surface and provide a protective coating that maintains the contacting surfaces in a sterically repulsive state. PMID: 24406099
- Lubricin is transcribed, translated, and expressed by ocular surface epithelia. Lubricin presence significantly reduces friction between the cornea and conjunctiva. PMID: 23599181
- The objective was to evaluate the presence and distribution of the lubricating and anti-adhesion glycoprotein lubricin and cells containing the contractile isoform smooth muscle alpha-actin (SMA) in pseudomembranes around loose hip prostheses. PMID: 23174700
- the identification of a novel null mutation in PRG4 confirming the genetic homogeneity of Camptodactyly-arthropathy-coxa vara-pericarditis syndrome . PMID: 22678705
- Production and accumulation of the superficial zone protein (SZP), also known as lubricin, by the surface zone is a characteristic feature of articular cartilage. PMID: 22490392
- Lubricin in human breast tissue expander capsules PMID: 22865664
- lubricin is able to bind to PMN via an L-selectin-dependent and -independent manner and may play a role in PMN-mediated inflammation. PMID: 22930755
- lubricin is expressed in the TMJ disc bilaminar zone; lubricin may have a role in normal disc posterior attachment physiology through the prevention of cellular adhesion as well as providing lubrication during normal bilaminar zone function PMID: 21955422
- Lubricin is expressed in chondrocytes derived from osteoarthritic cartilage encapsulated in poly (ethylene glycol) diacrylate scaffold. PMID: 22073377
- The surface layer of lubricin coating torn edges of anterior cruciate ligaments and menisci may interfere with the integrative healing process needed for repair. PMID: 21647956
- We described a 2-bp novel deletion mutation in PRG4 gene in a Pakistani family with camptodactyly-arthropathy-coxa-vara-pericarditis syndrome PMID: 21565623
- O-linked oligosaccharides NeuAc alpha2-3Gal beta1-3GalNAc and NeuAc alpha2-3Gal beta1-3(NeuAc alpha2-6)GalNAc were the dominating structures on lubricin. The latter was more prevalent in rheumatoid arthritis, indicating that sialylation is up-regulated. PMID: 20443780
- HAPO enhanced total adherence of HUVEC in a concentration-dependent manner. PMID: 19900364
- Mrna present in tendons from tennis elbow. PRG4 may also be expressed as alternatively spliced form lacking exons which encode part of the N-terminal matrix-binding and cell-proliferative domain. PMID: 12475643
- Megakaryocyte stimulating factor (msf) is linked to prosthetic loosening. PMID: 12783322
- data suggest that HAPO is a novel growth factor acting on the primitive cells of both hematopoietic and endothelial cell lineages [HAPO] PMID: 14976050
- hemangiopoietin is encoded by HAPO, also known as CACP, MSF, SZP, and PRG4 [editorial] PMID: 15710563
- Results describe the production of antibodies against human lubricin to determine the consequence of disease-causing mutations at the protein level and to study the protein's normal post-translational processing. PMID: 16000300
- PRG4 mutations may have a role camptodactyly-arthropathy-coxa vara-pericarditis in Saudi families PMID: 16429407
- In the human knee, cartilaginous deposits and osteoarthritic cartilage contained PRG4 in patients with advanced knee osteoarthritis. PMID: 17343281
- Lubricin provides synovial fluid with an ability to dissipate strain energy induced by mammalian locomotion, which is a chondroprotective feature that is distinct from boundary lubrication. PMID: 17404241
- synovial fluid lubricin concentrations were significantly reduced at an early stage following anterior cruciate ligament injury when compared with those in the contralateral joint. PMID: 18512776
- These findings demonstrate that HAPO induces endothelial cell proliferation through the PI-3K/Akt pathway. PMID: 18769058
- findings point to two distinct mechanisms by which rh-lubricin lubricates, one mechanism involving lubricin bound to the tissue surface and the other involving lubricin in solution PMID: 19058183
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相关疾病：
Camptodactyly-arthropathy-coxa vara-pericarditis syndrome (CACP)
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亚细胞定位：
Secreted.
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组织特异性：
Highly expressed in synovial tissue, cartilage and liver and weakly in heart and lung. Isoform B is expressed in kidney, lung, liver, heart and brain. Isoform C and isoform D are widely expressed.
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数据库链接：
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