Reprogramming-qualified B18R Recombinant Protein, Carrier-free

Reprogramming-qualified B18R Recombinant Protein, Carrier-free is of interest for cellular reprogramming and other applications requiring RNA-mediated gene delivery.  B18R protein is a Vaccinia virus-encoded receptor with specificity for mouse, human, rabbit, pig, rat and cow Type 1 interferons and has potent neutralizing capability acting as a decoy receptor for Type 1 interferons.

Biological Activity

  • Stemfactor B18R Recombinant Protein, Carrier-free bioactivity is demonstrated by the neutralization of IFN-alpha or IFN-beta effects in an assay of IL-12 production from CD40L-activated monocytes.
  • The biological function is validated by down-regulation of gene expression by qRT-PCR of TLR3, IFIT1, and OASI in response to B18R treatment on human fibroblasts to levels equivalent to non-transfected cells.
  • The efficiency of mRNA reprogramming is tested by performing mRNA reprogramming with OKSML on neonatal foreskin fibroblasts and demonstrating greater than 0.5% iPSC colony formation.
NuFF feeder cells plated at at 2.5 x 10E5 cells per well on Day -2. Images were captured 24 hours after plating and represent an appropriate NuFF feeder layer density for plating target cells on Day -1.

NuFF feeder cells plated at at 2.5 x 10E5 cells per well on Day -2.
Images were captured 24 hours after plating and represent an appropriate NuFF feeder layer density for plating target cells on Day -1.

Previously only available as part of the mRNA Reprogramming Kit or microRNA Booster KitReprogramming-qualified B18R Recombinant Protein, Carrier-free is now available individually.

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Written by Jean-François Têtu, PhD
Jean-François Têtu is Sales Manager at tebu-bio for the south of Europe and also for the UK and Eire. He also fervently defends and promotes anything from his home territory, the north of France.