growth factors

made for stem cells

Generic filters


we control every step of protein manufacture ensuring all our products are completely animal-free

total transparency

stringent purity and bioactivity testing data for all proteins – know what you are giving your cells

protein innovation

our R&D team are dedicated to solving stem cell culture challenges with optimised forms and animal-free firsts

Fast worldwide shipping, orders dispatched next-day

storage and handling advice
growth factor catalogue
how to buy
free delivery on all growth factors and cytokines until the end of December 2021


recombinant human OSM

Oncostatin M (OSM) is used in the differentiation of human pluripotent stem cells into hepatocytes

Qkine OSM is

  • high purity and bioactivity
  • animal-free
  • cost-effective
OSM protein
Thermostable FGF 2 G3 for iPSC stem cell media


In this week’s #FridayRead Yusuf et al investigate the neuroprotective role of FGF-9 in Huntington’s disease. Discovering that, in HD neurons, FGF-9 alters synaptic protein expression and neuronal morphology through the NF-κB signalling pathway.


Do you want a starting point for organoid media optimisation? Have a look at our organoid culture media recipe collection.

Qkine tech team

trusted by experts

“Our lab has been using FGF2 and activin A from Qkine in stem cell cultures for many months now. Our epiblast stem cells and trophoblast stem cells never looked better. Qkine has provided us with exceptional customer service and most importantly top-quality, affordable growth factors. We will be definitely using their products in the future.”
Prof Jan Zylicz, Novo Nordisk Foundation, University of Copenhagen

Recombinant human activin A PLUS, Qk005, and recombinant zebrafish Fgf2, Qk002,  feature in the recent publication:
Kinoshita, M. et al. Capture of Mouse and Human Stem Cells with Features of Formative Pluripotency. Cell Stem Cell (2020) doi:10.1016/j.stem.2020.11.005.

Austin Smith Lab, Cambridge Stem Cell Institute
“We have used GDF15 from Qkine in cellular experiments and in vivo and it performs very well. Qkine staff are communicative and efficient and delivery times are excellent.”
Prof Stephen O’Rahilly, University of Cambridge, UK