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HIL2-RO

Roche

Interleukin-2, human (hIL-2)

recombinant (E. coli)

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Synonym(s):
hIL-2, human interleukin-2

biological source

human

Quality Level

recombinant

expressed in E. coli

Assay

95% (SDS-PAGE)

form

solution

potency

>2 x 10^6 units/mg EC50

mol wt

(15,000 Da)

packaging

pkg of 10,000 U (10799068001 [5 μg, 50 ml])
pkg of 10,000 U (11011456001 [5 μg, 1 ml])
pkg of 50,000 U (11147528001 [25 μg, 5 ml])

manufacturer/tradename

Roche

storage condition

avoid repeated freeze/thaw cycles

concentration

10-20U/ml

impurities

<0.1 EU/μg

UniProt accession no.

storage temp.

−20°C

Gene Information

human ... IL2(3558)

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This Item
I2644H7041GF333
Interleukin-2, human (hIL-2) recombinant (E. coli)

Roche

HIL2-RO

Interleukin-2, human (hIL-2)

Sigma-Aldrich

Sigma-Aldrich

I2644

Interleukin-2 human

Interleukin-2 human IL-2, recombinant, expressed in HEK 293 cells, suitable for cell culture, endotoxin tested

Sigma-Aldrich

H7041

Interleukin-2 human

recombinant

expressed in E. coli

recombinant

expressed in E. coli

recombinant

expressed in HEK 293 cells

recombinant

-

assay

95% (SDS-PAGE)

assay

-

assay

-

assay

-

form

solution

form

lyophilized powder

form

lyophilized powder

form

-

potency

>2 x 10^6 units/mg EC50

potency

≤700 EC50

potency

≤5.0 ng/mL ED50

potency

-

mol wt

(15,000 Da)

mol wt

15.5 kDa

mol wt

monomer 15 kDa (glycosylated)

mol wt

-

General description

Recombinant Interleukin-2, human (hIL-2) is produced in E. coli and purified by standard chromatographic techniques. Solution in PBS and 1 mg/ml BSA, filtered through a 0.2 μm pore size membrane.

Specificity

Species specificity: Recombinant IL-2, human is effective on mouse and human cells.

Application

Recombinant IL-2, human, allows:
  • The cultivation of human and murine IL-2 dependent T-cell lines and natural killer cell lines.
  • The proliferation of mitogen-activated T-lymphocytes and natural killer cells.
  • The establishment of human and murine thymocyte, splenocyte, or peripheral blood lymphocyte (PBL) derived T-cell lines.
  • The generation of human and murine lymphokine-activated killer (LAK) cells (1-11).
  • In vitro re-stimulation of lung cells obtained from mice.

Biochem/physiol Actions

Interlekin-2 (IL-2) is a potent pro-inflammatory cytokine. It plays a protective role in autoimmune chronic inflammation, when present in low amounts. It is involved in maintaining immune homeostasis where it controls the cross-talk between T regulatory and T effector cells. Studies in acute myelogenous leukemia (AML) mice models show that antibody based delivery of IL-2 to targets present in tumor-linked vasculature results in antileukemic activity.

Quality

Purity: >95% pure as determined by SDS-PAGE
Endotoxin level: <0.1 EU/μg (LAL-test), <10 EU/ml (LAL-test)
(1 EU corresponds to 0.1 ng)

Sequence

Chain Length 134 AA
The primary structure of recombinant, IL-2, human is identical to that of natural, human IL-2 (one polypeptide chain, 133 amino acids), however, recombinant IL-2 has an extra methionine at the amino-terminus (one polypeptide chain, 134 amino acids) and is not glycosylated. Glycosylation is not essential for biological activity.

Unit Definition

EC50 definition: The amount of hIL-2 that is required to support half-maximal stimulation of cell proliferation (XTT cleavage) with CTLL-2 cells (1 unit equals ≤0.5 ng).

Unit Conversion: 1 BM unit = 3.25 NBSB units (natural IL-2)1 BM unit = 3.25 NBSB units (natural IL-2)

Physical form

Solution in PBS and 1 mg/ml BSA, filtered through a 0.2 μm pore size membrane

Preparation Note

Working concentration: 10 -20 U/ml
Established IL-2-dependent T-cell lines usually require 10-20 U/ml. Add IL-2 to the freezing medium for IL-2 dependent cell lines.

Working solution: Dilute the concentrated IL-2 solution (200 U/ml or 10,000 U/ml) with PBS or culture medium containing 1 mg/ml BSA or HSA (0.1%) or 1 to 10% serum.

Storage conditions (working solution): -15 to -25 °C
It is recommended to store the solution in aliquots at -15 to -25 °C.
Note: Avoid repeated freezing and thawing.

Specific activity/EC 50 : >2 x 106 U/mg <0.5 ng/ml (hIL-2, NIBSC, 1st international standard, 86/504), at least the same specific activity (EC50 ) compared to the indicated standard is guaranteed (19, 20). Human, recombinant IL-2 has the same biological activity in vitro as compared to human, natural IL-2 (15, 1–4).

Recommended Method of Dilution: Dilute the concentrated IL-2 solution (200 U/ml or 10,000 U/ml) with PBS or culture medium containing 1 mg/ml BSA or HSA (0.1%) or 1–10% serum.
Interleukin-2 (IL-2, also known as T-Cell Growth Factor, TCGF) is a lymphokine which is produced by lectin- or antigen-activated T-cells and plays an important immunoregulatory role. This factor, or lymphokine, was first identified by its ability to promote the long-term in vitro proliferation of activated T cells. It also promotes the generation and proliferation of cytotoxic T-cells, natural killer (NK) cells, and lymphokine- activated killer (LAK) cells (1–11). Recombinant human IL-2 allows the cultivation of human and murine IL-2-dependent T-cell lines and natural killer cell lines, the proliferation of mitogenactivated T-lymphocytes and natural killer cells, the establishment of human and murine thymocyte-, splenocyte-, or peripheral blood lymphocyte (PBL)- derived T-cell lines, and the generation of human and murine lymphokine-activated killer (LAK) cells (1-11). Established IL-2-dependant T-cell lines usually require 10-20 U/ml. Add IL-2 to the freezing medium for IL-2 dependant cell lines.

Other Notes

For life science research only. Not for use in diagnostic procedures.

also commonly purchased with this product

Product No.
Description
Pricing

Storage Class Code

12 - Non Combustible Liquids

WGK

nwg

Flash Point(F)

No data available

Flash Point(C)

No data available


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Journal of virology, 86(21), 11472-11482 (2012-08-17)
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