Human Recombinant IL-2 (E. coli-expressed)

Interleukin 2

Human Recombinant IL-2 (E. coli-expressed)

Interleukin 2

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Interleukin 2
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Overview

Interleukin 2 (IL-2) is a monomeric cytokine that was originally identified as a T cell growth factor (Gaffen & Liu). It binds to heterotrimeric receptors consisting of CD25, CD122, and CD132. Upon binding, it activates JAK3-, STAT5-, and AKT-dependent signaling pathways, which results in cellular proliferation and survival (Ma et al.). The majority of IL-2 is secreted by activated CD4+ and CD8+ T cells, although B cells and dendritic cells were found to produce IL-2 in small amounts. IL-2 downregulates immune responses to prevent autoimmunity during thymic development, influences the development of CD4+CD25+ regulatory T cells, and affects development of follicular helper T cells. IL-2 also controls inflammation by inhibiting Th17 differentiation (Banchereau et al.). High IL-2 levels in serum are associated with progression of scleroderma, rheumatoid arthritis, and gastric and non-small cell lung cancer, though no known disease can be directly attributed to the lack or excess of IL-2 (Gaffen & Liu).
Subtype
Cytokines
Cell Type
Hematopoietic Stem and Progenitor Cells, NK Cells, T Cells, T Cells, CD4+, T Cells, CD8+
Species
Human
Area of Interest
Immunology, Stem Cell Biology
Purity
≥ 95%

Data Figures

(A) The biological activity of Human Recombinant IL-2 was tested by its ability to promote the proliferation of CTLL-2 cells. The EC50 is defined as the effective concentration of the cytokine at which cell proliferation is at 50% of maximum. The EC50 in the above example is 1.99 ng/mL. (B) 1 μg of Human Recombinant IL-2 was resolved with SDS-PAGE under reducing (+) and non-reducing (-) conditions and visualized by Coomassie Blue staining. Human Recombinant IL-2 has a predicted molecular mass of 15.5 kDa.

Protocols and Documentation

Find supporting information and directions for use in the Product Information Sheet or explore additional protocols below.

Document Type
Product Name
Catalog #
Lot #
Language
Catalog #
78220.3, 78220.2, 78220.1, 78220
Lot #
All
Language
English
Document Type
Safety Data Sheet
Catalog #
78220.3, 78220.2, 78220.1, 78220
Lot #
All
Language
English