Human/mouse/rat activin A PLUS protein is an optimised biologically active truncation of the mature domain of human Activin A protein.  The EC50 and activity in stem cell culture of activin A PLUS is equivalent to the full mature domain activin A.

High purity 24 kDa dimer comprising truncated mature domain of activin A protein, animal-free (AF) and carrier-protein free (CF).  Recombinant activin A PLUS is designed to be manufactured at scale for cost-effective, large-scale stem cell culture applications.

Human BMP2 protein (bone morphogenetic protein 2) protein is member of the TGFβ family and a key regulator of embryogenesis and potent differentiation factor of embryonic stem cells (ESC) and induced pluripotent stem cells (iPSC) towards endoderm fates. BMP2 plays roles in the differentiation of mesenchymal cells to adipocytes, epithelial cancer EMT, chondrogenesis and regulation of neuronal and glial cell development.

26 kDa disulfide–linked bioactive highly pure dimer comprised of the mature domain of human BMP2 protein (animal-free and carrier protein-free). Our recombinant human BMP2 protein has been optimized for expression in E. coli and purified to homogeneity, offering a highly reliable and cost-effective reagent for the regulation of stem cell differentiation.

Human BMP4 (bone morphogenetic protein 4) protein is a key regulator of embryogenesis and supports the differentiation of embryonic stem cells and induced pluripotent stem cells. In addition, BMP4 plays roles in the differentiation of mesenchymal cells to adipocytes, epithelial cancer EMT, and regulating neuronal and glial cell development.

Highly pure 26 kDa disulfide–linked bioactive dimer comprised of the mature domain of human BMP4 protein (animal-free and carrier protein-free).

Human FGF-9 protein is a member of the fibroblast growth factor (FGF) family, FGF-9 is involved in many developmental processes including neural and skeletal development. Recombinant FGF9 is used frequently in the generation of kidney organoids.

Highly pure and bioactive 23 kDa FGF-9 protein, animal-derived component free (ACDF) and carrier-protein free (CF)

Human FGF2 /bFGF protein (145 aa) is our gold-standard and recommended FGF2 / bFGF protein for induced pluripotent stem cell (iPSC) and embryonic stem cells (ESC) maintenance, and induced pluripotent and mesenchymal stem cells proliferation and differentiation.

High purity and bioactivity 17 kDa FGF2 / bFGF protein, animal-derived component free (ACDF) and carrier-protein free (CF) comprising the core structured region (145 amino acids) sufficient for full biological activity.

Human FGF2 / bFGF protein (154 aa) is a highly bioactive, long–form of human fibroblast growth factor 2 protein.   Human bFGF / FGF-2 protein is used to support the maintenance of human embryonic stem cells and proliferation and differentiation of induced pluripotent and mesenchymal stem cells. This 154aa form of FGF2 comprises the core structured region and N-terminal extension.

High purity and bioactivity 17 kDa FGF2 / bFGF protein, animal-derived component free (ACDF) and carrier-protein free (CF).

Human HGF (NK1) protein is a potent, high purity NK1 isoform of human hepatocyte growth factor (HGF) that promotes efficient differentiation of human iPSCs to hepatocyte-like cells at just 10 ng/ml with highly homogeneous expression of the hepatic marker, HNF4α. The highly scalable animal-free manufacture and enhanced bioactivity make this suitable for chemically-defined media and reproducible scale-up.

20kDa naturally occurring isoform of HGF, animal-free and carrier-protein free.

Human LIF (leukemia inhibitory factor) protein suppresses the differentiation of embryonic stem cells (ESCs) and is widely used in ESC and iPSC culture (1).  Human LIF can be used in the maintenance of both murine and human ESCs in feeder or feeder-free chemically defined culture systems (2). 

LIF is a pleiotrophic factor that belongs to the IL-6 superfamily of cytokines. Acting through a heterodimeric receptor of gp130 and gp190, LIF can activate a number of cellular pathways including the JAK/STAT, PI3K and MAPK pathways (3).

Qkine human LIF protein is high purity and animal and carrier-protein free for reproducible results.

Mouse LIF (murine leukemia inhibitory factor) protein supports the derivation, propagation and expansion of mouse embryonic stem cells (ESC), and maintenance of pluripotency.   LIF protein increases the robustness of mouse embryonic stem cell culture in feeder or feeder-free chemically defined culture systems.

Qkine recombinant mouse LIF protein is animal-free and carrier-protein free for highly reproducible results. Bioactivity was tested by colony formation assay and determination of Nanog expression (1).

Human noggin supports growth of organoids derived from epithelial tissues and iPSC and ESC differentiation. Noggin protein is a bone morphogenetic protein (BMP) family antagonist used in the culture of intestinal, pancreatic, lung and tumor-derived organoids; epithelial organoid culture (WNR media), maintenance of undifferentiated embryonic stem cells and for stem cell differentiation into neural and microglial lineages.

Qkine human noggin protein is a highly pure 46kDa bioactive dimer for reproducible results in organoid culture.

Mouse Noggin supports growth of organoids derived from mouse epithelial tissues and stem cell differentiation. Noggin protein is a bone morphogenetic protein (BMP) family antagonist used in the culture of intestinal, pancreatic, lung and tumor-derived organoids; maintenance of embryonic stem cells and differentiation into neural lineages.

Qkine recombinant mouse noggin protein is a highly pure 46kDa bioactive dimer for reproducible results (animal-free and carrier-protein free).

Human R-spondin 1 protein (RSPO1) is the prototypic member of the R-spondin family and is used to potentiate Wnt signalling in many organoid culture systems including intestinal and tumor (cancer) organoid culture. R-spondin 1 is also required for hematopoietic stem cell specification and cancer cell migration and survival.

13kDa highly pure, bioactive domain of human R-spondin 1 comprising the two cysteine-rich furin-like domains of R-spondin 1, which are necessary and sufficient for Wnt signalling potentiation and are the essential domains for activity in stem cell and organoid culture.  Qk006 is animal-free and not glycosylated to ensure production of homogeneous protein and enhanced comparability between batches. Used to replace R-spondin conditioned media for improved reproducibility in chemically defined organoid culture media.

Recombinant R-spondin 1 LR5 protein is engineered to act as a high affinity ligand for the LGR5 receptor.  In epithelial tissues LGR5 marks the stem cell population.  This engineered protein, R-spondin 1 LR5, activates wnt signalling only in the LGR5+ stem cell population.  R-spondin1 LR5 has been tested in intestinal organoid culture and supports organoid survival and growth. As LGR5 specifically marks stem cells and is not found on transit amplifying cells, the lower crypt multiplicity seen in organoid cultures with R-spondin 1 LR5 (in comparison to wild-type R-spondin 1, Qk006) supports the notion that this engineered form is acting specifically on stem cells.  This specialized form of R-spondin 1 was developed in Marc de la Roche’s lab (University of Cambridge).

Human R-spondin 3 protein potentiates Wnt signalling in and has been shown to function in crypt regeneration in the intestine and control stem cell and progenitor cell behaviour during kidney development. R-spondin 3 is used alongside R-spondin 1 in intestinal organoid culture systems.

17kDa highly pure, bioactive domain of human R-spondin 3 comprising the two cysteine-rich furin-like domains, which are necessary and sufficient for Wnt signalling potentiation and are the essential domains for activity in stem cell and organoid culture. Animal-free and carrier-protein free.

Human TGF-β1 PLUS protein is the first entirely animal-free recombinant human transforming growth factor beta 1 (TGF-β1) protein for highly reproducible results and compatible with chemically-defined stem cell media. TGFβ1 is used extensively in E8-style induced pluripotent (iPSC) and embryonic (ESC) stem cell media.

High purity 24 kDa dimer comprising optimised mature domain of TGFβ1 protein, animal-free (AF) and carrier-protein free (CF).  Our  TGF-β1 PLUS protein has been extensively tested for maintenance of iPSC pluripotency by the specialist stem cell biotechnology company, Stemnovate, Cambridge, UK.

*Benchmark our TGF-β1 PLUS against your existing supplier*