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Key Documents

SRP3266

Sigma-Aldrich

IL-7 human

Animal-component free, recombinant, expressed in E. coli, ≥98% (SDS-PAGE), ≥98% (HPLC)

同義詞:

Lymphopoietin 1 (LP-1), pre-B cell factor

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About This Item

分類程式碼代碼:
12352202
NACRES:
NA.32

生物源

human

重組細胞

expressed in E. coli

化驗

≥98% (HPLC)
≥98% (SDS-PAGE)

形狀

lyophilized

效力

≤0.5 ng/mL ED50

分子量

17.4 kDa

包裝

pkg of 10 μg

雜質

<0.1 EU/μg endotoxin, tested

顏色

white to off-white

UniProt登錄號

運輸包裝

wet ice

儲存溫度

−20°C

基因資訊

human ... IL7(3574)

一般說明

IL7 (interleukin 7) was first identified in 1988 in a bone marrow culture as a factor that facilitated murine B cell precursors growth. It is a cytokine produced by non-lymphoid cells in lymphoid organs. In humans, it is also produced by keratinocytes, peripheral blood dendritic cells,follicular dendritic cells, intestinal epithelial cells, hepatic tissue, endothelial cells, smooth muscle cells and fibroblasts. IL7 gene is localized to human chromosome 8q12-q13. It is a glycoprotein with a four a-helix structure with a hydrophobic core. Recombinant human IL-7 is a 17.4 kDa protein containing 153 amino acid residues.

生化/生理作用

IL7 (interleukin 7) is crucial for lymphocyte survival and development. It is required for the survival, proliferation and the rearrangement of certain TCR (T cell receptor) genes in earliest thymus stem cells. During later stages, in thymus, it is essential for the positive selection of CD8 cells. IL7 is also essential for the survival and homeostatic proliferation of mature T cells which have left the thymus. In patients undergoing allogeneic haematopoietic stem cell transplantation (HSCT), increased IL-7 plasma levels in the early post-transplant period is linked with suppressed T cell counts and elevated risks of acute graft-versus-host disease (aGVHD) and mortality. IL7 shows varied tear expression levels during different stages of Graves′ ophthalmopathy (GO), and thus, might be implicated in the pathogenesis of GO.

外觀

Lyophilized from 10 mM Acetic Acid.

重構

Centrifuge the vial prior to opening. Reconstitute in water to a concentration of 0.1-1.0 mg/mL. Do not vortex. This solution can be stored at 2-8°C for up to 1 week. For extended storage, it is recommended to further dilute in a buffer containing a carrier protein (example 0.1% BSA) and store in working aliquots at -20°C to -80°C.

象形圖

Exclamation mark

訊號詞

Warning

危險聲明

危險分類

Eye Irrit. 2 - Skin Irrit. 2

儲存類別代碼

10 - Combustible liquids

水污染物質分類(WGK)

WGK 1

閃點(°F)

Not applicable

閃點(°C)

Not applicable


分析證明 (COA)

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Interleukin-7 expression in tears and orbital tissues of patients with Graves' ophthalmopathy.
Cai K and Wei R
Endocrine, 44, 140-144 (2013)
Cell biology of IL-7, a key lymphotrophin.
Jiang Q
Cytokine & Growth Factor Reviews, 16, 513-533 (2005)
A E Namen et al.
The Journal of experimental medicine, 167(3), 988-1002 (1988-03-01)
We have used a biological assay system we developed to biochemically purify a previously uncharacterized murine lymphopoietic growth factor designated lymphopoietin 1 (LP-1). This factor is capable of stimulating the proliferation and extended maintenance of precursor cells of the B
K Kielsen et al.
Scandinavian journal of immunology, 81(1), 72-80 (2014-09-30)
Infections and acute graft-versus-host disease (aGVHD) are major causes of treatment-related mortality and morbidity following allogeneic haematopoietic stem cell transplantation (HSCT). Both complications depend on reconstitution of the T-lymphocyte population based on donor T cells. Although it is well established
Edwin Leeansyah et al.
PLoS pathogens, 11(8), e1005072-e1005072 (2015-08-22)
Mucosa-associated invariant T (MAIT) cells represent a large innate-like evolutionarily conserved antimicrobial T-cell subset in humans. MAIT cells recognize microbial riboflavin metabolites from a range of microbes presented by MR1 molecules. MAIT cells are impaired in several chronic diseases including

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