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主营:分子类,蛋白类,抗体类,生化类试剂
℡ 4000-520-616
℡ 4000-520-616
yesbiotech/Human IL-4 ELISA Kit/96 wells/EL10026
产品编号:EL10026
市  场 价:¥8100.00
场      地:美国(厂家直采)
产品分类: 蛋白类>多肽>多肽合成>
联系QQ:1570468124
电话号码:4000-520-616
邮      箱: info@ebiomall.com
美  元  价:$405.00
品      牌: yesbiotech
公      司:yesbiotech
公司分类:
yesbiotech/Human IL-4 ELISA Kit/96 wells/EL10026
商品介绍
  • Description
  • Additional

Description

Details

RACTIVITY

Human

SENSITIVITY

<6.6 pg/mL

ASSAY RANGE

6.6-1000 pg/mL

REAGENTS PROVIDED

IL-4 MICROTITER PLATEBIOTIN CONJUGATEAVIDIN CONJUGATEIL-4 STANDARDCALIBRATOR DILUENT ICALIBRATOR DILUENT IIWASH BUFFER (20X/96 wells, 30X/192 wells)SUBSTRATE ASUBSTRATE BSTOP SOLUTION

INTENDED USE

This Human Interleukin 4 ELISA Kit is to be used for the in vitro quantitative determination of human interleukin 4 (IL-4) concentrations in serum, plasma, cell culture supernatant, and other biological fluids. This kit is intended for LABORATORY RESEARCH USE ONLY and is not for use in diagnostic or therapeutic procedures.

INTRODUCTION

Interleukin 4 (IL-4) was initially characterized as a B cell stimulatory factor (BSF-1) (1) and B-cell differentiation factor (BCDFg) (2). It was subsequently revealed that IL-4 is a pleiotropic cytokine with multiple immune response modulating functions on diverse cell types including T cells, monocytes, macrophages, mast cells, fibroblasts, endothelial cells, osteoblasts, keratinocytes, hepatocytes and astrocytes (3-8). IL- 4 is produced by CD4+ TH0 and TH2 cells (9,10), fetal thymocytes (11), CD8+ T cells (12), mast cells (13) and basophils (14).

Human and mouse cDNAs for IL-4 encode precursor proteins containing 153 and 140 amino acid residues, respectively. The signal peptides from the precursors are cleaved to yield mature proteins of 129 amino acid residues (human) and 120 amino acid residues (mouse) (17, 18). Both human and mouse proteins have multiple potential glycosylation sites and six cysteines that are all involved in intro-molecular disulfide bridges.

IL- 4 exhibits approximately 25% amino acid sequence homology to IL-13 that shares a number of biological functions with IL-4 (19). The human and mouse IL-4 gene, each composed of four exons and three introns, have been localized to human chromosome 5q23-31 and mouse chromosome 11 in tandem with genes for IL-3, IL-5, IL-9, IL-13 and GM-CSF (20, 21).

IL-4 is an anti-inflammatory cytokine that exhibits multiple immuno-modulation functions on a variety of cell types, including T cells, B cells, monocytes, neutrophils, hematopoietic progenitors, fibroblasts, endothelial cells, and epithelial cells (15, 16).

The diverse effects exhibited by IL-4 in vitro suggest that it may play a central role in the modulation of immune and inflammatory responses in vivo. It was reported that introduction of malignant tumor cells transfected with the gene for IL-4 and producing IL-4 in athymic mice can block tumor formation by other transplantable tumor lines in vivo. Since the anti-tumor activity of IL-4 is evident in these athymic mice, IL-4-mediated host-defense responses other than T cell immunity must be involved (22). It was reported that IL-4 is important for protective immunity in parasitic nematode-infected mice, since IL-4 or IL-4R antibodies can blocked the polyclonal IgE response and abrogated protective immunity to the infection (23). In contrast to results obtained with the nematode-infected mice, endogenous IL-4 was reported to inhibit protective immunity in mice infected with the protozoan Leishmania major (24, 25). Clearly, much more work is required to unravel the complex network of IL-4-dependent processes in order to utilize IL-4 successfully in immunotherapy (16).

This IL-4 ELISA is a 4.5 hour solid phase immunoassay readily applicable to measure IL-4 levels in serum, plasma, cell culture supernatant, and other biological fluids in the range of 0 to 1000 pg/mL. It showed no cross reactivity with other cytokines tested. This IL-4 ELISA is expected to be effectively used for further investigations into the relationship between IL-4 and the various conditions mentioned.

CITATIONS:

1. Sarchielli P et al. Proinflammatory cytokines, adhesion molecules, and lymphocyte integrin expression in the internal jugular blood of migraine patients without aura assessed ictally. Headache. 2006 Feb;46(2):200-7.

2. LIN-LIN WANG et al. Expression of CD39 mRNA is altered in the peripheral blood of patients with allergic asthma. Biomed Rep. Jan 2014; 2(1): 75–78.

Additional

Additional Information

Product SpecificityHuman IL-4 ELISA Kit
ApplicationRefer to Insert
Size96 wells
品牌介绍

Anogen-Yes Biotech Laboratories Ltd.是一家位于加拿大密西沙加的生物技术公司。成立于1989年,我们30年来一直是高质量抗体基产品的骄傲供应商。我们提供300多种单克隆和多克隆抗体,以及60多种类型的ELISA试剂盒,用于研究,诊断和治疗应用。


作为一家专注于研究的公司,我们还开发了许多专有的诊断和治疗产品。我们的产品Abcream是一种有效的抗牛皮癣局部抗IL-8(CXCL8)单克隆抗体,已于2001年获得中国国家食品药品监督管理局(SFDA)的批准,并获得多项国际专利。我们的用于诊断目的的新生儿TSH ELISA试剂盒也已获得加拿大卫生部的许可。我们还启动了针对炎症,阿尔茨海默氏病和癌症的研究和开发产品。


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