Interested in promotions? | Click here >>
Human His6IGFBP2
Growth Factors and Cytokines

Human His6IGFBP2 #12568

Citations (0)
Human His6IGFBP2: Image 1
The inhibition of IGF-I induced Akt phosphorylation by hHis6IGFBP2. Human dermal fibroblasts were treated with Human Insulin-like Growth Factor I (hIGF-I) # 8917 in the presence or absence of increasing concentrations of hHis6IGFBP2 for 10 minutes, lysed, and Akt1 (Ser473) phosphorylation was quantified using the PathScan® Phospho-Akt1 (Ser473) Sandwich ELISA Kit #7160.
Human His6IGFBP2: Image 2
The purity of recombinant hHis6 IGFBP2 was determined by SDS-PAGE of 6 µg reduced (+) and nonreduced (-) recombinant hHis6 IGFBP2 and staining overnight with Coomassie Blue.


With carrier: Lyophilized from a 0.22 μm filtered solution of hHis6IGFBP2 in 20 mM Tris, pH 7.2 containing 20 μg BSA per 1 μg hHis6IGFBP2. Carrier free: Lyophilized from a 0.22 μm filtered solution of hHis6IGFBP2 in 20 mM Tris, pH 7.2.


Stable in lyophilized state at 4°C for 1 year after receipt. Sterile stock solutions reconstituted with carrier protein are stable at 4°C for 2 months and at -20°C for 6 months. Avoid repeated freeze-thaw cycles. Maintain sterility. Storage at -20°C should be in a manual defrost freezer.

Product Description

Purity >95% as determined by SDS-PAGE of 6 μg reduced (+) and nonreduced (-) recombinant hHisIGFBP2. All lots are greater than 95% pure.
Endotoxin Less than 0.01 ng endotoxin/1 μg hHis6IGFBP2.
Activity The bioactivity of hHis6IGFBP2 was determined by inhibition of IGF-I induced AKT phosphorylation in human dermal fibroblasts. The ED50 of each lot is between 0.1 and 0.5 µg/ml.
Molecular Formula Recombinant amino-terminally His6-tagged hIGFBP2 has a calculated MW of 32,998 Da. DTT-reduced and nonreduced protein migrates as a 37 kDa polypeptide. The expected amino terminus of recombinant hHis6IGFBP2 was verified by amino acid sequencing.

Source / Purification

Recombinant Human His6IGFBP2 (hHis6IGFBP2) Glu40-Gln328 (Accession #NP_18065) was expressed in human 293 cells at Cell Signaling Technology.


IGFBP2 is a multifunctional protein that plays a key role in the regulation of IGFI/II activity, cell proliferation, and cell adhesion (1,2). One of six high-affinity IGF binding proteins, IGFBP2 is the second most abundant IGFBP species in circulation (1). IGFBP2 can antagonize IGF signaling, or directly stimulate cell proliferation depending on context and cell type (1,2). Many of these effects are IGF independent (2). Elevated serum levels of IGFBP2 have been reported in a variety of cancers (1,2). IGFBP2 has been implicated in angiogenesis in a murine melanoma model (3).
  1. Fukushima, T. and Kataoka, H. (2007) Anticancer Res 27, 3685-92.
  2. Hoeflich, A. et al. (2001) Cancer Res 61, 8601-10.
  3. Das, S.K. et al. (2013) Cancer Res 73, 844-54.

Pathways & Proteins

Explore pathways + proteins related to this product.

Limited Uses

Except as otherwise expressly agreed in a writing signed by a legally authorized representative of CST, the following terms apply to Products provided by CST, its affiliates or its distributors. Any Customer's terms and conditions that are in addition to, or different from, those contained herein, unless separately accepted in writing by a legally authorized representative of CST, are rejected and are of no force or effect.

Products are labeled with For Research Use Only or a similar labeling statement and have not been approved, cleared, or licensed by the FDA or other regulatory foreign or domestic entity, for any purpose. Customer shall not use any Product for any diagnostic or therapeutic purpose, or otherwise in any manner that conflicts with its labeling statement. Products sold or licensed by CST are provided for Customer as the end-user and solely for research and development uses. Any use of Product for diagnostic, prophylactic or therapeutic purposes, or any purchase of Product for resale (alone or as a component) or other commercial purpose, requires a separate license from CST. Customer shall (a) not sell, license, loan, donate or otherwise transfer or make available any Product to any third party, whether alone or in combination with other materials, or use the Products to manufacture any commercial products, (b) not copy, modify, reverse engineer, decompile, disassemble or otherwise attempt to discover the underlying structure or technology of the Products, or use the Products for the purpose of developing any products or services that would compete with CST's products or services, (c) not alter or remove from the Products any trademarks, trade names, logos, patent or copyright notices or markings, (d) use the Products solely in accordance with CST's Product Terms of Sale and any applicable documentation, and (e) comply with any license, terms of service or similar agreement with respect to any third party products or services used by Customer in connection with the Products.

For Research Use Only. Not For Use In Diagnostic Procedures.
Cell Signaling Technology is a trademark of Cell Signaling Technology, Inc.
PathScan is a trademark of Cell Signaling Technology, Inc.
Inquiry Info.# 12568