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細(xì)胞分析試劑盒
中文名稱(chēng)

Fibroblast Growth Factor, Basic, Human, BioAssay ELISA Kit (bFGF)

英文名字
Fibroblast Growth Factor, Basic, Human, BioAssay ELISA Kit (bFGF)
供應(yīng)商
USBiological
產(chǎn)品貨號(hào)
215987
產(chǎn)品報(bào)價(jià)
￥1/96Tests
產(chǎn)品說(shuō)明書(shū)
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背景資料
USBiological品牌是全球有名的抗原抗體和生化試劑供應(yīng)商，生產(chǎn)世界上種類(lèi)最多的抗體，用于Western Blot、免疫沉淀、免疫熒光、免疫組化和流式細(xì)胞術(shù)等多種檢測(cè)方法。武漢艾美捷科技作為USBiological品牌中國(guó)區(qū)域總代理，是行業(yè)中少有的致力于服務(wù)客戶(hù)，幫助客戶(hù)，且擁有獨(dú)立的專(zhuān)業(yè)銷(xiāo)售團(tuán)隊(duì)、技術(shù)支持團(tuán)隊(duì)、市場(chǎng)營(yíng)銷(xiāo)團(tuán)隊(duì)、進(jìn)出口報(bào)關(guān)團(tuán)隊(duì)的高科技生物企業(yè)。可以為您提供及時(shí)的咨詢(xún)響應(yīng)，專(zhuān)業(yè)的產(chǎn)品和解決方案支持，穩(wěn)健快捷的交貨周期，優(yōu)質(zhì)放心的售后服務(wù)。我們致力于為您提供有價(jià)值的產(chǎn)品和服務(wù)，在意您的成功！
產(chǎn)品描述
When proteins synthesized by one cell can diffuse over small distances to induce changes in neighboring cells, the event is called a paracrine interaction, and the diffusible proteins are called paracrine factors or growth and differentiation factors (GDFs). Many of these paracrine factors can be grouped into four major families on the basis of their structures. These families are the fibroblast growth factor (FGF) family, the Hedgehog family, the Wingless (Wnt) family, and the TGF-b superfamily.The fibroblast growth factor (FGF) family currently has over a dozen structurally related members. FGF-1 is also known as acidic FGF; FGF-2 is called basic FGF(bFGF); and FGF7 sometimes goes by the name of keratinocyte growth factor. Over a dozen distinct FGF genes are known in vertebrates, and they can generate hundreds of protein isoforms by varying their RNA splicing or initiation codons in different tissues. FGFs can activate a set of receptor tyrosine kinases called the fibroblast growth factor receptors (FGFRs). The receptor tyrosine kinases are proteins that extend through the cell membrane. On the extracellular side is the portion of the protein that binds the paracrine factor. On the intracellular side is a dormant tyrosine kinase (i.e., a protein that can phosphorylate another protein by splitting ATP). When the FGF receptor binds an FGF (and only when it binds an FGF), the dormant kinase is activated, and it phosphorylates certain proteins within the responding cell. The proteins are now activated and can perform new functions. FGFs are associated with several developmental functions, including angiogenesis (blood vessel formation), mesoderm formation, and axon extension. While FGFs can often substitute for one another, their expression patterns give them separate functions. Basic FGF especially important in angiogenesis, and FGF8 is important for the development of the midbrain and limbs.The FGFs have been showed 30-505 overall sequence homology at the amino acid level. They are present at significantly higher concentrations than the neurotrophins; FGF-1 and bFGF concentrations, respectively, are ~500-fold and 50-fold greater than that of NGF. The major FGF translation products do not possess a signal peptide sequence and are found principally within the cytoplasm of cells in which they are expressed. Thus, like several other growth factors, it is not entirely. It is suspected that other members of the FGF family influence development. For example, there is evidence that FGF-8 is involved in axial specification and patterning of limb development. FGFs stimulate the proliferation of neurons in the developing nervous system and glial cells throughout life. The bFGF stimulates the proliferation of multipotential stem cells, which subsequently give rise to neurons of the cortex. The FGFs also exhibit trophic activity toward mature neurons, promoting the survival of these cells without stimulatingDNAsynthesis. There is some evidence that the FGFs may play a critical role in facilitating axonal regeneration in thePNSand provide trophic support to neurons following trauma or injury.The complexity of FGF action is compounded by the existence of four receptors for FGF (FGFR1-4). Three FGFRs are expressed in theCNS, where they exist as multiple alternatively spliced products. All of the FGFRs are ligand-activated tyrosine kinases and comprise a distinct subfamily of the receptor tyrosine kinases. The interaction of the various FGFs with the four FGFRs and their multiple mRNA splice products is bewilderingly complex and incompletely understood. FGFR1 appears to be expressed exclusively in neurons, while principally glial cells express bFGFR and FGFR3. Interestingly, neurons of the substantia nigra and some motor neurons appear to express both FGF-1 and its receptor, FGFR1, suggesting that FGF-1 may act in an autocrine fashion to support these cells. Both receptors are expressed prior to the appearance of their ligands, FGF-1 and bFGF. These data support the view that other FGF family members are more functionally relevant species during embryogenesis. FGFR1 is expressed in the primitive neuroepithelium. A novel aspect of FGF biology is the ability of these growth factors to bind to cell surface proteoglycans, specifically heparan sulfate proteoglycans. Indeed, it appears that these proteoglycans can act as low-affinity receptors for the FGFs. It is thought that FGFs bind to the proteoglycans, which effectively immobilize them and induce or stabilize an active conformation, facilitating binding to the FGFR.bFGF is the most extensively studied member in FGF family, and it found in almost all tissues of mesodermal and neuroectodermal origin and also in tumors related to these tissues. Endothelial cells produce large amounts of this factor. Some bFGF is associated with the extracellular matrix of the subendothelial cells. bFGF is an 18kD protein with a length of 155 amino acids and an isoelectric point of 9.6. It does not contain disulfide bonds and is not glycosylated. bFGF stimulates the growth of fibroblasts, myoblasts, osteoblasts, neuronal cells, endothelial cells, keratinocytes, chondrocytes, and many other cell types. bFGF has been shown to be a promoting or inhibitory modulator of cellular differentiation also for other cell types. bFGF is not only a mitogen for chondrocytes but also inhibits their terminal differentiation. It was proved the relationship between the bFGF expression and the advancement level of colorectal cancer and the survival of the patients ill with this disease. It was stated that the highest levels of bFGF was connected with the advancement of neoplastic process, especially when metastases coexisted at+ the same time. It was also demonstrated that the higher levels of bFGF gave worse prognosis as far as survival was concerned. These observations suggest the bFGF and it's family may play an active role in variety of pathological condition.This human bFGF test kit is a quantitative measurement of human bFGF in serum and cell culture supernatants using ELISA (Enzyme-Linked Immunosorbent Assay) in vitro.Intended Use:This Human bFGF ELISA kit is to be used for the in vitro quantitative determination of human basic fibroblast growth factor (bFGF) concentrations in serum, plasma, cell culture supernatant, urine, and other biological fluids.Sensitivity:<78pg/mlRange:78-8000pg/mlKit Components:bFGF?MICROTITER PLATE?BIOTIN CONJUGATE?AVIDIN CONJUGATE?bFGF?STANDARD??CALIBRATOR DILUENT I?CALIBRATOR DILUENT II?WASH BUFFER (20X/96 wells, 30X/192 wells)??SUBSTRATE A??SUBSTRATE B??STOP SOLUTIONStorage and Stability:Store powder at 4°C liquid at -20°C. Store other components at 4°C. Stable for 6 months For maximum recovery of product, centrifuge the original vial after thawing and prior to removing the cap.
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保存建議
建議收到Fibroblast Growth Factor, Basic, Human, BioAssay ELISA Kit (bFGF)產(chǎn)品后將其置于4°C/-20°C保存。
其他
Usbiological公司是美國(guó)著名的抗體和生化試劑供應(yīng)商，生產(chǎn)世界上種類(lèi)最多的抗體，用于Western Blot、免疫沉淀、免疫熒光、免疫組化和流式細(xì)胞術(shù)等多種檢測(cè)方法。Usbiological公司現(xiàn)已擁有超過(guò)50,19234種抗體、抗原和生化產(chǎn)品，為科研用戶(hù)提供了諸多超值選擇。
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