growth factors

made for stem cells

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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

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free delivery on all growth factors and cytokines until the end of December 2021


recombinant human BDNF

brain-derived neurotrophic factor (BDNF) is used in the differentiation of human pluripotent stem cell-derived neural progenitors to neurons and cortical organoid protocols

Qkine BDNF is

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


This weeks #FridayRead combines so many of our favourite things – animal-free media, 3D cell culture, cultured meat and beautiful images! Great work @tobiasmess and @mosa_meat

Messmer et al, Mosa Meat


#TechTip Always reconstitute TGF beta family proteins using a low pH. These proteins will precipitate in physiological buffer! The low pH will also aid the maintenance of the correct disulphide structure by minimising disulphide bond exchange reactions. We use 10mM HCl

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