Keratinocyte growth factor receptors

Vincenzo de Giorgi1, Serena Sestini, Daniela Massi

  • 1Department of Dermatology, University of Florence, Via della Pergola 60, 50100 Florence, Italy. vincenzo.degiorgi@unifi.it

Dermatologic Clinics
|October 2, 2007
PubMed

Insights

Growth factor receptors like keratinocyte growth factor receptor (KGFR) and epidermal growth factor receptor (EGFR) control epithelial cell proliferation and differentiation. This review details their structure, signaling, and biological impacts on keratinocytes.

Area of Science:

  • Cellular Physiology
  • Molecular Biology
  • Dermatology

Background:

  • Epithelial cell growth and differentiation are regulated by cell surface growth factor receptors.
  • Keratinocyte growth factor receptor (KGFR) and epidermal growth factor receptor (EGFR) are key receptors in keratinocytes.
  • Modulation of these receptors influences epithelial cell behavior.

Purpose of the Study:

  • To review the architecture, ligand binding, and signaling pathways of KGFR and EGFR.
  • To summarize the biological effects of KGFR and EGFR on keratinocytes.
  • To highlight the role of KGFR and EGFR in regulating epithelial proliferation and differentiation.

Main Methods:

  • Literature review of studies on KGFR and EGFR.
  • Analysis of signaling pathways activated by ligand binding.
  • Synthesis of data on in vivo and in vitro effects.

Main Results:

  • KGFR and EGFR play crucial roles in controlling keratinocyte proliferation.
  • These receptors also contribute to the epithelial cell differentiation process.
  • Their modulation affects proliferation rates and differentiation.

Conclusions:

  • KGFR and EGFR are critical regulators of keratinocyte function.
  • Understanding their mechanisms is vital for cellular physiology and potential therapeutic strategies.
  • Further research into KGFR and EGFR signaling can advance epithelial biology.

Related Concept Videos

Mitogens and the Cell Cycle02:38

Mitogens and the Cell Cycle

Mitogens and their receptors play a crucial role in controlling the progression of the cell cycle. However, the loss of mitogenic control over cell division leads to tumor formation. Therefore, mitogens and mitogen receptors play an important role in cancer research. For instance, the epidermal growth factor (EGF) - a type of mitogen and its transmembrane receptor (EGFR), decides the fate of the cell's proliferation. When EGF binds to EGFR, a member of the ErbB family of tyrosine kinase...
Mitogens and the Cell Cycle02:38

Mitogens and the Cell Cycle

Mitogens and their receptors play a crucial role in controlling the progression of the cell cycle. However, the loss of mitogenic control over cell division leads to tumor formation. Therefore, mitogens and mitogen receptors play an important role in cancer research. For instance, the epidermal growth factor (EGF) - a type of mitogen and its transmembrane receptor (EGFR), decides the fate of the cell's proliferation. When EGF binds to EGFR, a member of the ErbB family of tyrosine kinase...
Enzyme-linked Receptors01:00

Enzyme-linked Receptors

Enzyme-linked receptors are proteins that act as both receptor and enzyme, activating multiple intracellular signals. This is a large group of receptors that include the receptor tyrosine kinase (RTK) family. Many growth factors and hormones bind to and activate the RTKs.
Neurotrophin (NT) receptors are a family of RTKs, including trkA, trkB, and trkC (tropomyosin-related kinase) receptors. TrkA is specific for nerve growth factor (NGF), neurotrophin-6, and neurotrophin-7. TrkB binds...
Enzyme-linked Receptors01:00

Enzyme-linked Receptors

Enzyme-linked receptors are proteins that act as both receptor and enzyme, activating multiple intracellular signals. This is a large group of receptors that include the receptor tyrosine kinase (RTK) family. Many growth factors and hormones bind to and activate the RTKs.
Neurotrophin (NT) receptors are a family of RTKs, including trkA, trkB, and trkC (tropomyosin-related kinase) receptors. TrkA is specific for nerve growth factor (NGF), neurotrophin-6, and neurotrophin-7. TrkB binds...
TGF - β Signaling Pathway01:16

TGF - β Signaling Pathway

The TGF-β signaling pathway regulates cell growth, differentiation, adhesion, motility, and development. TGF-β ligands that induce TGF-β signaling are synthesized in their latent form. Several proteases or cell surface receptors such as integrins act upon the latent form, releasing the active ligand. There are three types of mammalian TGF-βs: (TGF-β1, TGF-β2, and TGF-β3) that bind as homodimers or heterodimers to TGF-β receptors. The TGF-β receptors are of three kinds RI, RII, and RIII. The RI...
Transducer Mechanism: G Protein–Coupled Receptors01:30

Transducer Mechanism: G Protein–Coupled Receptors

G Protein–Coupled Receptors (GPCRs) are membrane-bound receptors that transiently associate with heterotrimeric G proteins and induce an appropriate response to various stimuli. GPCRs regulate critical physiological pathways and are excellent drug targets for treating diseases such as diabetes, cancer, obesity, depression, or Alzheimer's. Nearly 35% of approved drugs implement their therapeutic effects by selectively interacting with specific GPCRs.
GPCRs are also called heptahelical, 7TM, or...