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Interleukin (IL)-6 Receptor Sale

(Synonyms: 白细胞介素 (IL)-6 受体) 目录号 : GC34254

Interleukin(IL)-6Receptor是一种多肽,来源于白细胞介素6受体。

Interleukin (IL)-6 Receptor Chemical Structure

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1mg
¥1,071.00
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5mg
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10mg
¥7,229.00
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Sample solution is provided at 25 µL, 10mM.

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产品描述

Interleukin (IL)-6 Receptor is a peptide, derived from interleukin-6 receptor.

Chemical Properties

Cas No. SDF
别名 白细胞介素 (IL)-6 受体
Canonical SMILES Thr-Ser-Leu-Pro-Val-Gln-Asp-Ser-Ser-Ser-Val-Pro
分子式 C51H85N13O21 分子量 1216.3
溶解度 Water : ≥ 50 mg/mL (41.11 mM) 储存条件 Store at -20°C
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1 mg 5 mg 10 mg
1 mM 0.8222 mL 4.1108 mL 8.2217 mL
5 mM 0.1644 mL 0.8222 mL 1.6443 mL
10 mM 0.0822 mL 0.4111 mL 0.8222 mL
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Research Update

Principles of interleukin (IL)-6-type cytokine signalling and its regulation

The IL (interleukin)-6-type cytokines IL-6, IL-11, LIF (leukaemia inhibitory factor), OSM (oncostatin M), ciliary neurotrophic factor, cardiotrophin-1 and cardiotrophin-like cytokine are an important family of mediators involved in the regulation of the acute-phase response to injury and infection. Besides their functions in inflammation and the immune response, these cytokines play also a crucial role in haematopoiesis, liver and neuronal regeneration, embryonal development and fertility. Dysregulation of IL-6-type cytokine signalling contributes to the onset and maintenance of several diseases, such as rheumatoid arthritis, inflammatory bowel disease, osteoporosis, multiple sclerosis and various types of cancer (e.g. multiple myeloma and prostate cancer). IL-6-type cytokines exert their action via the signal transducers gp (glycoprotein) 130, LIF receptor and OSM receptor leading to the activation of the JAK/STAT (Janus kinase/signal transducer and activator of transcription) and MAPK (mitogen-activated protein kinase) cascades. This review focuses on recent progress in the understanding of the molecular mechanisms of IL-6-type cytokine signal transduction. Emphasis is put on the termination and modulation of the JAK/STAT signalling pathway mediated by tyrosine phosphatases, the SOCS (suppressor of cytokine signalling) feedback inhibitors and PIAS (protein inhibitor of activated STAT) proteins. Also the cross-talk between the JAK/STAT pathway with other signalling cascades is discussed.

Historical overview of the interleukin-6 family cytokine

Interleukin-6 (IL-6) has been identified as a 26-kD secreted protein that stimulates B cells to produce antibodies. Later, IL-6 was revealed to have various functions that overlap with other IL-6 family cytokines and use the common IL-6 signal transducer gp130. IL-6 stimulates cells through multiple pathways, using both membrane and soluble IL-6 receptors. As indicated by the expanding market for IL-6 inhibitors, it has become a primary therapeutic target among IL-6 family cytokines. Here, we revisit the discovery of IL-6; discuss insights regarding the roles of this family of cytokines; and highlight recent advances in our understanding of regulation of IL-6 expression.

IL-6 pathway in the liver: From physiopathology to therapy

Interleukin 6 (IL-6) is a pleiotropic four-helix-bundle cytokine that exerts multiple functions in the body. In the liver, IL-6 is an important inducer of the acute phase response and infection defense. IL-6 is furthermore crucial for hepatocyte homeostasis and is a potent hepatocyte mitogen. It is not only implicated in liver regeneration, but also in metabolic function of the liver. However, persistent activation of the IL-6 signaling pathway is detrimental to the liver and might ultimately result in the development of liver tumors. On target cells IL-6 can bind to the signal transducing subunit gp130 either in complex with the membrane-bound or with the soluble IL-6 receptor to induce intracellular signaling. In this review we describe how these different pathways are involved in the physiology and pathophyiology of the liver. We furthermore discuss how IL-6 pathways can be selectively inhibited and therapeutically exploited for the treatment of liver pathologies.

Interleukin-6: A Masterplayer in the Cytokine Network

Interleukin-6 (IL-6) is a member of the pro-inflammatory cytokine family, induces the expression of a variety of proteins responsible for acute inflammation, and plays an important role in the proliferation and differentiation of cells in humans. IL-6 signaling is mediated by building a complex of IL-6, the transmembrane IL-6 receptor (mIL-6R) or with soluble forms of IL-6R (sIL-6R), and the signal-transducing subunit molecule gp130. Therefore, three modes for IL-6 signaling may occur in which IL-6 is binding to mIL-6R (classic), to sIL-6R (trans-signaling), or is joined through IL-6R to gp130 on nearby located cells (trans-presentation). These pathways, and the fact that gp130 is ubiquitously expressed, lead to the pleiotropic functions of IL-6. The control of IL-6 signaling is regulated through the induction of suppressor molecules after activation of the IL-6 pathways as well as through the presence of sIL-6R and gp130 forms in the blood. Vice versa, an overproduction of IL-6 and dysregulation of the IL-6 signaling pathways can result in inflammatory and autoimmune disorders as well as cancer development suggesting that IL-6 plays a significant role in the human cytokine network. Several therapeutic agents have been evaluated for inhibiting the cytokine itself, the signaling via the IL-6 receptor, or target kinases (e.g., JAK/STAT) associated with the signaling pathways. Amongst others, tocilizumab (anti-IL-6R humanized antibody) has been approved for the treatment of rheumatoid arthritis, cytokine release syndrome, and idiopathic multicentric Castleman's disease (iMCD), whereas siltuximab (an IL-6 antagonist) received approval for iMCD only. Although not all IL-6-associated diseases respond to IL-6 blockade, a better understanding of the underlying mechanisms of the IL-6 pathways may, therefore, help to find the best treatment for IL-6-associated diseases in the near future.

IL-6/IL-6 receptor system and its role in physiological and pathological conditions

IL (interleukin)-6, which was originally identified as a B-cell differentiation factor, is a multifunctional cytokine that regulates the immune response, haemopoiesis, the acute phase response and inflammation. IL-6 is produced by various types of cell and influences various cell types, and has multiple biological activities through its unique receptor system. IL-6 exerts its biological activities through two molecules: IL-6R (IL-6 receptor) and gp130. When IL-6 binds to mIL-6R (membrane-bound form of IL-6R), homodimerization of gp130 is induced and a high-affinity functional receptor complex of IL-6, IL-6R and gp130 is formed. Interestingly, sIL-6R (soluble form of IL-6R) also binds with IL-6, and the IL-6-sIL-6R complex can then form a complex with gp130. The homodimerization of receptor complex activates JAKs (Janus kinases) that then phosphorylate tyrosine residues in the cytoplasmic domain of gp130. The gp130-mediated JAK activation by IL-6 triggers two main signalling pathways: the gp130 Tyr759-derived SHP-2 (Src homology 2 domain-containing protein tyrosine phosphatase-2)/ERK (extracellular-signal-regulated kinase) MAPK (mitogen-activated protein kinase) pathway and the gp130 YXXQ-mediated JAK/STAT (signal transducer and activator of transcription) pathway. Increased IL-6 levels are observed in several human inflammatory diseases, such as rheumatoid arthritis, Castleman's disease and systemic juvenile idiopathic arthritis. IL-6 is also critically involved in experimentally induced autoimmune diseases. All clinical findings and animal models suggest that IL-6 plays a number of critical roles in the pathogenesis of autoimmune diseases. In the present review, we first summarize the IL-6/IL-6R system and IL-6 signal transduction, and then go on to discuss the physiological and pathological roles of IL-6.