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Human TGF-beta 1 Inhibition of IL-4-Induced Proliferation of HT-2 Cells
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Human TGF beta 1

Transforming Growth Factor-beta 1 (TGF-b1) is a widely used multifunctional cytokine that regulates immune function, cell differentiation, proliferation, migration, and fibrosis. TGF-b1 is often used in addition to recombinant IL-2 for production of Treg cells in cell culture.  Tested for biological activity in a HT-2 cell inhibition of growth assay.  Recombinant TGF-beta 1 is manufactured in the USA by protein manufacturer Shenandoah.

  • Lot-specific activity
  • Refernce Units conversion data
  • Lyophilized protein
  • High purity
  • Low endotoxin
  • High quality 


Recombinant Human TGF-beta 1 Lot-to-Lot Consistency Review.

SKU Select size Price Buy
100-39-5ug Mini: 5 ug $75.00 + -
100-39-20ug Std: 20 ug $270.00 + -
100-39-100ug Value: 100 ug $995.00 + -
100-39-500ug Midgi: 500 ug $2995.00 + -
100-39-1mg Mg: 1 mg $4995.00 + -
  • Weight
    0.0100 lbs
  • SKU

TGF-beta 1 Description

Catalog Number: 100-39

Alternate Names:  Differentiation inhibiting factor, cartilage-inducing factor               Accession Number: P01137
Description:  Transforming growth factor-beta 1 (TGF-b1) is a member of the TGF-beta superfamily of cytokines. Members of this family exhibit regulatory activity in immunity, proliferation, adhesion, migration, and growth inhibition pathways. TGF-b1 signals through SMAD proteins via the TGF-bRI and TGF-bRII receptors.  TGF-b1 is often used in addition to recombinant IL-2 for production of Treg cells in cell culture.  
Source:  Genetically modified CHO cells.
Predicted MW: Dimer, 12.8/25.6 kDa (112/224 aa)
Formulation:  Lyophilized from a sterile (0.2 micron) filtered aqueous solution containing 0.1 % trifluoroacetic acid (TFA) and Trehalose in a 20:1 Trehalose to protein ratio

TGF-beta 1 Product Specifications*
*Lot-specific values for the following specifications are supplied with each product on its corresponding COA.  The values provided here are minimum expected values to pass internal requirements. 


Method of Determination

Acceptance Criteria


Reducing and Non-Reducing SDS PAGE



Kinetic LAL

≤1 EUs/µg

Biological Activity

Inhibition of IL-4-induced HT-2 cell proliferation

≤500 pg/mL; ≥ 2.0 x 10^6 units/mg


 **** Reference Units: The activity of Human TFG-beta is 2.2 x 10^4 RU/μg, which was calibrated against recombinant human TGF-beta 1 NIBSC code: 89/514.

 TGF-beta 1 Preparation and Storage

  • Country of Origin:  USA       
  • Shipping:  Room temperature             
  • Storage Prior to Reconstitution:  -20°C
  • Product Reconstitution:  Sterile 10 mM HCl at 0.1 mg/mL
  • Instructions:  Centrifuge vial before opening. Suspend the product by gently pipetting the above recommended solution down the sides of the vial. DO NOT VORTEX. Allow several minutes for complete reconstitution. For prolonged storage, dilute to working aliquots in a 0.1% BSA solution, store at -80°C and avoid repeat freeze thaws.


TGF-beta 1 Expiration Date:      

  • 12 months from date of receipt when stored at -20°C to -80°C as supplied.
  • 1 month when stored at 4°C after reconstituting as directed.
  • 3 months when stored at -20°C to -80°C after reconstituting as directed.

Data Sheet (PDF)

SDS Document (PDF)

Papers that use this product (PMID):

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