Recombinant FGF4

Fibroblast growth factor 4 (FGF-4) is a member of the FGF superfamily with a physiological role in the regulation of proliferation and differentiation in embryonic stem cells and tissue stem cells 1–3

FGF-4 has been shown to promote neural stem cell proliferation and neuronal differentiation in the postnatal brain 4, increase the proliferation rate of human adult bone-marrow derived mesenchymal stem cells 5 and support the maintenance, proliferation and self-renewal properties of human embryonic stem cells 6

Synergism between FGF4 and WNT signalling acts to form hindgut organoids from iPSC-derived human posterior gut endoderm cells7 and in FGF4 can be used in culture systems to mimic embryonic intestinal development during directed differentiation of pluripotent stem cells into intestinal organoids

Alternative protein names: Fibroblast Growth Factor-4, Kaposi’s sarcoma-associated FGF, k-FGF, Heparin secretory-transforming protein 1 HST-1, Transforming protein KS3, Heparin-binding growth factor 4, HBGF-4
Structure of FGF4 growth factor
  1. Beenken, A. & Mohammadi, M. The FGF family: biology, pathophysiology and therapy. Nat. Rev. Drug Discov. 8, 235–53 (2009).
  2. Coutu, D. L. & Galipeau, J. Roles of FGF signaling in stem cell self-renewal, senescence and aging. Aging (Albany. NY). 3, 920–33 (2011).
  3. Kosaka, N., Sakamoto, H., Terada, M. & Ochiya, T. Pleiotropic function of FGF-4: Its role in development and stem cells. Dev. Dyn. 238, 265–276 (2009).
  4. Kosaka, N. et al. FGF-4 regulates neural progenitor cell proliferation and neuronal differentiation. FASEB J. 20, 1484–1485 (2006).
  5. Farré, J. et al. FGF-4 increases in vitro expansion rate of human adult bone marrow-derived mesenchymal stem cells. Growth Factors 25, 71–76 (2007).
  6. Mayshar, Y. et al. Fibroblast Growth Factor 4 and Its Novel Splice Isoform Have Opposing Effects on the Maintenance of Human Embryonic Stem Cell Self-Renewal. Stem Cells 26, 767–774 (2008).
  7. Zhang, R.-R. et al. Stem Cell Reports Human iPSC-Derived Posterior Gut Progenitors Are Expandable and Capable of Forming Gut and Liver Organoids. Stem Cell Reports 10, 780–793 (2018).
  8. McCracken, K. W. et al. Modelling human development and disease in pluripotent stem-cell-derived gastric organoids. Nature 516, 400–404 (2014).

Summary: Mature domain of human FGF4 (residues 79-206, Uniprot:P08620) expressed in E.coli and purified to homogeneity. Mature protein is a non-glycosylated protein with a molecular weight of ca. 14 kDa

Form: protein is provided frozen in PBS (carrier protein-free)

Molecular mass: ~14 kDa

Quality testing: all our proteins are made in-house by our scientists.  We take the quality of our proteins very seriously and you can view the full quality testing data for each batch of protein by clicking on the link below

Qk004 human FGF4 batch #010

Thaw the sample on ice, spin briefly and dilute with PBS as needed.  Our protein are supplied carrier-protein free.  If compatible with your work, add carrier protein of your choice such as BSA, HSA or gelatin to further minimise loss by adsorption.  Spin in a microfuge for 5 minutes at maximum speed, and divide the solution into suitable aliquots and store at -80°C. We recommend that single-use aliquots should be prepared to avoid freeze-thaw cycles.

Every effort is made to ensure samples are sterile however we recommend sterile filtering after dilution in media or the final working solution.

Buy online or email orders@qkine.com

We take the quality of our proteins very seriously

All our proteins are produced in-house by our scientists and we understand the impact on your work if your growth factors and cytokines don't perform as expected.

Please visit this article by our founder, Marko Hyvonen to understand why we think improving growth factor quality will save valuable time and expense.

Qkine quality promise: our growth factors and cytokines work. If they don’t, we give you your money back. Simple as that.

Find out more

Buy online or email orders@qkine.com