γ-Secretase: A multifaceted regulator of angiogenesis: Angiogenesis Review Series

Michael E. Boulton, Jun Cai, Maria B. Grant

Research output: Contribution to journalArticle

44 Citations (Scopus)

Abstract

Introduction Regulated intramembrane proteolysis γ-Secretase Structure Receptor cleavage Is there more to γ-Secretase than regulated intramembrane proteolysis? Receptor translocation Presenilin-binding proteins Phosphorylation Role of γ-Secretase in angiogenesis Notch Vascular endothelial growth factor receptor-1 (VEGFR-1) Insulin-like growth factor-I receptor (IGF-1R) ErbB4 Cadherins Amyloid precursor protein (APP) Other substrates γ-Secretase as a therapeutic target γ-Secretase, what next? Abstract Physiological angiogenesis is essential for development, homeostasis and tissue repair but pathological neovascularization is a major feature of tumours, rheumatoid arthritis and ocular complications. Studies over the last decade have identified γ-secretase, a presenilin-dependent protease, as a key regulator of angiogenesis through: (i) regulated intramembrane proteolysis and transmembrane cleavage of receptors (e.g. VEGFR-1, Notch, ErbB-4, IGFI-R) followed by translocation of the intracellular domain to the nucleus, (ii) translocation of full length membrane-bound receptors to the nucleus (VEGFR-1), (iii) phosphorylation of membrane bound proteins (VEGFR-1 and ErbB-4), (iv) modulation of adherens junctions (cadherin) and regulation of permeability and (v) cleavage of amyloid precursor protein to amyloid-β which is able to regulate the angiogenic process. The γ-secretase-induced translocation of receptors to the nucleus provides an alternative intracellular signalling pathway, which acts as a potent regulator of transcription. γ-secretase is a complex composed of four different integral proteins (presenilin, nicastrin, Aph-1 and Pen-2), which determine the stability, substrate binding, substrate specificity and proteolytic activity of γ-secretase. This seeming complexity allows numerous possibilities for the development of targeted γ-secretase agonists-antagonists, which can specifically regulate the angiogenic process. This review will consider the structure and function of γ-secretase, the growing evidence for its role in angiogenesis and the substrates involved, γ-secretase as a therapeutic target and future challenges in this area.

Original languageEnglish (US)
Pages (from-to)781-795
Number of pages15
JournalJournal of Cellular and Molecular Medicine
Volume12
Issue number3
DOIs
StatePublished - Jun 2008
Externally publishedYes

Fingerprint

Amyloid Precursor Protein Secretases
Vascular Endothelial Growth Factor Receptor-1
Presenilins
Proteolysis
Phosphorylation
Amyloid beta-Protein Precursor
Substrates
Cadherins
Physiologic Neovascularization
Pathologic Neovascularization
Membranes
Adherens Junctions
IGF Type 1 Receptor
Transcription
Substrate Specificity
Amyloid
Tumors
Permeability
Rheumatoid Arthritis
Carrier Proteins

Keywords

  • γ-secretase
  • Amyloid
  • Angiogenesis
  • Notch
  • Presenilin
  • Receptor translocation
  • VEGFR-1

ASJC Scopus subject areas

  • Biochemistry, Genetics and Molecular Biology(all)
  • Biochemistry

Cite this

γ-Secretase : A multifaceted regulator of angiogenesis: Angiogenesis Review Series. / Boulton, Michael E.; Cai, Jun; Grant, Maria B.

In: Journal of Cellular and Molecular Medicine, Vol. 12, No. 3, 06.2008, p. 781-795.

Research output: Contribution to journalArticle

Boulton, Michael E. ; Cai, Jun ; Grant, Maria B. / γ-Secretase : A multifaceted regulator of angiogenesis: Angiogenesis Review Series. In: Journal of Cellular and Molecular Medicine. 2008 ; Vol. 12, No. 3. pp. 781-795.
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