ARHGEF10 knockout inhibits platelet aggregation and protects mice from thrombus formation

D. H. Lu, C. C. Hsu, S. W. Huang, H. J. Tu, T. F. Huang, H. C. Liou, H. M. Liao, C. H. Chen, W. M. Fu, S. S.F. Gau

Research output: Contribution to journalArticle

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Abstract

Essentials ARHGEF10 single-nucleotide polymorphism provides risk of ischemic and atherothrombotic stroke. The role of ARHGEF10 in platelet function was examined using ARHGEF10 knockout mice. ARHGEF10 deficiency inhibits platelet function and arterial thrombus formation. ARHGEF10 knockout protects mice from stroke-induced infarction. Summary: Background ARHGEF10, a member of the Rho guanine nucleotide exchange factor (GEF) family, stimulates Rho GTPases. Rho GTPases have been reported to regulate a variety of cellular behaviors, such as cell polarity, cytoskeletal organization, and gene transcription. ARHGEF10 single-nucleotide polymorphisms are linked to the risk of ischemic stroke. However, the role of ARHGEF10 in platelet function remains unknown. Objective To examine the role of ARHGEF10 in platelet function. Methods ARHGEF10−/−were generated. We examined the in vitro and in vivo effects of ARHGEF10 knockout on platelet function and arterial thrombosis formation. Results ARHGEF10−/− mice had normal platelet counts, but showed altered aggregation in response to thrombin, collagen, ADP, protease-activated receptor-4 peptide, and U46619 stimulation. ARHGEF10 knockout influenced platelet spreading on fibrinogen-coated surfaces, and caused the platelets to show less lamellipodia-like extension than wild-type platelets. ARHGEF10 knockout also inhibited platelet clot retraction induced by thrombin stimulation. ARHGEF10 knockout resulted in prolonged tail bleeding time and inhibited the stable thrombus formation induced by FeCl3 in the carotid artery. Conclusions ARHGEF10 serves as an important regulator in platelet shape change, spreading, and aggregation. Moreover, ARHGEF10 also plays an important role in arterial thrombosis formation.

Original languageEnglish
Pages (from-to)2053-2064
Number of pages12
JournalJournal of Thrombosis and Haemostasis
Volume15
Issue number10
DOIs
Publication statusPublished - Oct 1 2017
Externally publishedYes

Fingerprint

Platelet Aggregation
Thrombosis
Blood Platelets
rho GTP-Binding Proteins
Stroke
Knockout Mice
Thrombin
Single Nucleotide Polymorphism
Clot Retraction
Rho Guanine Nucleotide Exchange Factors
15-Hydroxy-11 alpha,9 alpha-(epoxymethano)prosta-5,13-dienoic Acid
Cell Polarity
Pseudopodia
Bleeding Time
Platelet Count
Carotid Arteries
Adenosine Diphosphate
Fibrinogen
Infarction
Tail

Keywords

  • ARHGEF10 knockout mice
  • guanine nucleotide exchange factors
  • platelet function
  • Rho guanine nucleotide exchange factor
  • thombosis

ASJC Scopus subject areas

  • Hematology

Cite this

ARHGEF10 knockout inhibits platelet aggregation and protects mice from thrombus formation. / Lu, D. H.; Hsu, C. C.; Huang, S. W.; Tu, H. J.; Huang, T. F.; Liou, H. C.; Liao, H. M.; Chen, C. H.; Fu, W. M.; Gau, S. S.F.

In: Journal of Thrombosis and Haemostasis, Vol. 15, No. 10, 01.10.2017, p. 2053-2064.

Research output: Contribution to journalArticle

Lu, DH, Hsu, CC, Huang, SW, Tu, HJ, Huang, TF, Liou, HC, Liao, HM, Chen, CH, Fu, WM & Gau, SSF 2017, 'ARHGEF10 knockout inhibits platelet aggregation and protects mice from thrombus formation', Journal of Thrombosis and Haemostasis, vol. 15, no. 10, pp. 2053-2064. https://doi.org/10.1111/jth.13799
Lu, D. H. ; Hsu, C. C. ; Huang, S. W. ; Tu, H. J. ; Huang, T. F. ; Liou, H. C. ; Liao, H. M. ; Chen, C. H. ; Fu, W. M. ; Gau, S. S.F. / ARHGEF10 knockout inhibits platelet aggregation and protects mice from thrombus formation. In: Journal of Thrombosis and Haemostasis. 2017 ; Vol. 15, No. 10. pp. 2053-2064.
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abstract = "Essentials ARHGEF10 single-nucleotide polymorphism provides risk of ischemic and atherothrombotic stroke. The role of ARHGEF10 in platelet function was examined using ARHGEF10 knockout mice. ARHGEF10 deficiency inhibits platelet function and arterial thrombus formation. ARHGEF10 knockout protects mice from stroke-induced infarction. Summary: Background ARHGEF10, a member of the Rho guanine nucleotide exchange factor (GEF) family, stimulates Rho GTPases. Rho GTPases have been reported to regulate a variety of cellular behaviors, such as cell polarity, cytoskeletal organization, and gene transcription. ARHGEF10 single-nucleotide polymorphisms are linked to the risk of ischemic stroke. However, the role of ARHGEF10 in platelet function remains unknown. Objective To examine the role of ARHGEF10 in platelet function. Methods ARHGEF10−/−were generated. We examined the in vitro and in vivo effects of ARHGEF10 knockout on platelet function and arterial thrombosis formation. Results ARHGEF10−/− mice had normal platelet counts, but showed altered aggregation in response to thrombin, collagen, ADP, protease-activated receptor-4 peptide, and U46619 stimulation. ARHGEF10 knockout influenced platelet spreading on fibrinogen-coated surfaces, and caused the platelets to show less lamellipodia-like extension than wild-type platelets. ARHGEF10 knockout also inhibited platelet clot retraction induced by thrombin stimulation. ARHGEF10 knockout resulted in prolonged tail bleeding time and inhibited the stable thrombus formation induced by FeCl3 in the carotid artery. Conclusions ARHGEF10 serves as an important regulator in platelet shape change, spreading, and aggregation. Moreover, ARHGEF10 also plays an important role in arterial thrombosis formation.",
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AU - Lu, D. H.

AU - Hsu, C. C.

AU - Huang, S. W.

AU - Tu, H. J.

AU - Huang, T. F.

AU - Liou, H. C.

AU - Liao, H. M.

AU - Chen, C. H.

AU - Fu, W. M.

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AB - Essentials ARHGEF10 single-nucleotide polymorphism provides risk of ischemic and atherothrombotic stroke. The role of ARHGEF10 in platelet function was examined using ARHGEF10 knockout mice. ARHGEF10 deficiency inhibits platelet function and arterial thrombus formation. ARHGEF10 knockout protects mice from stroke-induced infarction. Summary: Background ARHGEF10, a member of the Rho guanine nucleotide exchange factor (GEF) family, stimulates Rho GTPases. Rho GTPases have been reported to regulate a variety of cellular behaviors, such as cell polarity, cytoskeletal organization, and gene transcription. ARHGEF10 single-nucleotide polymorphisms are linked to the risk of ischemic stroke. However, the role of ARHGEF10 in platelet function remains unknown. Objective To examine the role of ARHGEF10 in platelet function. Methods ARHGEF10−/−were generated. We examined the in vitro and in vivo effects of ARHGEF10 knockout on platelet function and arterial thrombosis formation. Results ARHGEF10−/− mice had normal platelet counts, but showed altered aggregation in response to thrombin, collagen, ADP, protease-activated receptor-4 peptide, and U46619 stimulation. ARHGEF10 knockout influenced platelet spreading on fibrinogen-coated surfaces, and caused the platelets to show less lamellipodia-like extension than wild-type platelets. ARHGEF10 knockout also inhibited platelet clot retraction induced by thrombin stimulation. ARHGEF10 knockout resulted in prolonged tail bleeding time and inhibited the stable thrombus formation induced by FeCl3 in the carotid artery. Conclusions ARHGEF10 serves as an important regulator in platelet shape change, spreading, and aggregation. Moreover, ARHGEF10 also plays an important role in arterial thrombosis formation.

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