Inorganic polyphosphate in blood coagulation

Stephanie A. Smith, James H. Morrissey

Research output: Chapter in Book/Report/Conference proceedingChapter

Abstract

Polyphosphate (polyP) was recently discovered to be stored in a subset of the secretory granules of human platelets (the blood cell that supports formation of clots) and to be secreted upon activation of these cells. It is also present in other human cell types and is present in infectious microorganisms. Work from our laboratory and others has now shown that polyphosphate is a novel, potent modulator of blood clotting that likely plays roles in hemostasis, thrombosis, infl ammation, and the host response to pathogens. Polyphosphate acts at multiple points in the coagulation cascade, providing a template for initiation of the contact pathway of clotting, enhancing the activation of factor V (a critical cofactor in clotting whose accelerated activation results in an earlier thrombin burst), and markedly enhancing the rate of activation of factor XI by thrombin (resulting in marked amplifi cation of thrombin generation). Polyphosphate also acts on the formation and degradation of fi brin by becoming incorporated into polymerizing fi brin fi brils (rendering them thicker and obscuring the binding sites for fi brinolytic proteins, which in turn delays clot degradation). Therapeutic agents targeting polyphosphate may have the potential to limit thrombosis with fewer hemorrhagic complications than conventional anticoagulant drugs that target essential proteases of the blood-clotting cascade.

Original languageEnglish (US)
Title of host publicationInorganic Polyphosphates in Eukaryotic Cells
PublisherSpringer International Publishing
Pages159-176
Number of pages18
ISBN (Electronic)9783319410739
ISBN (Print)9783319410715
DOIs
StatePublished - Jan 1 2016

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Polyphosphates
Blood Coagulation
Coagulation
Blood
Chemical activation
Thrombin
Cells
Thrombosis
Degradation
Factor XI
Pathogens
Binding sites
Platelets
Microorganisms
Factor V
Modulators
Secretory Vesicles
Hemostasis
Positive ions
Anticoagulants

ASJC Scopus subject areas

  • Biochemistry, Genetics and Molecular Biology(all)
  • Immunology and Microbiology(all)
  • Chemistry(all)
  • Engineering(all)
  • Materials Science(all)
  • Chemical Engineering(all)
  • Medicine(all)

Cite this

Smith, S. A., & Morrissey, J. H. (2016). Inorganic polyphosphate in blood coagulation. In Inorganic Polyphosphates in Eukaryotic Cells (pp. 159-176). Springer International Publishing. https://doi.org/10.1007/978-3-319-41073-9_11

Inorganic polyphosphate in blood coagulation. / Smith, Stephanie A.; Morrissey, James H.

Inorganic Polyphosphates in Eukaryotic Cells. Springer International Publishing, 2016. p. 159-176.

Research output: Chapter in Book/Report/Conference proceedingChapter

Smith, SA & Morrissey, JH 2016, Inorganic polyphosphate in blood coagulation. in Inorganic Polyphosphates in Eukaryotic Cells. Springer International Publishing, pp. 159-176. https://doi.org/10.1007/978-3-319-41073-9_11
Smith SA, Morrissey JH. Inorganic polyphosphate in blood coagulation. In Inorganic Polyphosphates in Eukaryotic Cells. Springer International Publishing. 2016. p. 159-176 https://doi.org/10.1007/978-3-319-41073-9_11
Smith, Stephanie A. ; Morrissey, James H. / Inorganic polyphosphate in blood coagulation. Inorganic Polyphosphates in Eukaryotic Cells. Springer International Publishing, 2016. pp. 159-176
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