Related Experiment Video
Updated: May 26, 2026

03:53
Extracellular Vesicle Tissue Factor Activity Assay
Published on: December 29, 2023
Tissue factor in health and disease
Julie C Williams1, Nigel Mackman
1Division of Hematology and Oncology, Department of Medicine, McAllister Heart Institute, University of North Carolina at Chapel Hill, North Carolina, USA.
Frontiers in Bioscience (Elite Edition)
|December 29, 2011
Summary
Tissue Factor (TF) initiates blood clotting upon injury. This review explores TF
Area of Science:
- Hemostasis and Thrombosis
- Cellular Biology
- Pathology
Background:
- Tissue Factor (TF) is the primary initiator of the extrinsic coagulation cascade.
- Normally sequestered from blood, TF is exposed upon vascular injury.
- TF initiates both coagulation and intracellular signaling via protease-activated receptors.
Purpose of the Study:
- To review the diverse roles of Tissue Factor in physiological and pathological conditions.
- To discuss therapeutic strategies aimed at mitigating aberrant TF expression.
Main Methods:
- Literature review of scientific articles on Tissue Factor.
- Analysis of TF's role in coagulation and cellular signaling pathways.
- Examination of TF's involvement in various disease states.
Main Results:
- TF activation is a critical event following vascular injury, leading to thrombin generation.
- Pathological TF expression is implicated in numerous diseases.
- TF signaling contributes to cellular responses beyond coagulation.
Conclusions:
- Tissue Factor plays a pivotal role in hemostasis and disease pathogenesis.
- Targeting TF expression presents a potential therapeutic avenue for TF-driven diseases.
Related Concept Videos
Extrinsic and Intrinsic Pathways of Hemostasis
Blood clotting or coagulation involves extrinsic and intrinsic pathways, which ultimately merge into the common pathway, forming a fibrin clot.
The Extrinsic Pathway
The extrinsic pathway of coagulation is typically initiated by tissue damage that exposes blood to tissue factor (TF), a protein released by the damaged tissue cells outside the blood vessels—this interaction with TF triggers biochemical reactions involving specific clotting factors. The key player here is Factor VII, which forms a...
The Extrinsic Pathway
The extrinsic pathway of coagulation is typically initiated by tissue damage that exposes blood to tissue factor (TF), a protein released by the damaged tissue cells outside the blood vessels—this interaction with TF triggers biochemical reactions involving specific clotting factors. The key player here is Factor VII, which forms a...
Anticoagulant Drugs: Low-Molecular-Weight Heparins
Hemostasis is a crucial process that prevents excessive blood loss from damaged blood vessels. It involves various mechanisms such as vasoconstriction, platelet adhesion and activation, and fibrin formation. The importance of each mechanism depends on the type of vessel injury. In contrast, thrombosis is the abnormal formation of a blood clot within the blood vessels, leading to potential complications if the clot obstructs blood flow. Thrombosis can be caused by increased coagulability of the...
Tissue Injury: Inflammation and Repair
Following injury, the integrity of the injured tissues must be reestablished. For example, in skin tissue, wound repair involves coordination among resident skin cells, blood mononuclear cells, extracellular matrix, growth factors, and cytokines to complete the healing cascade.
Formation of Blood Clot
In case of deep injuries, trauma to blood vessels results in blood loss. In the meantime, phospholipids released from the ruptured endothelial cellular membrane are converted into arachidonic...
Formation of Blood Clot
In case of deep injuries, trauma to blood vessels results in blood loss. In the meantime, phospholipids released from the ruptured endothelial cellular membrane are converted into arachidonic...
Healing I: Introduction
Healing is the physiological process by which the body restores the integrity and function of damaged tissues following injury. It involves a coordinated interplay of cellular proliferation, extracellular matrix remodeling, and growth factor signaling. The extent and nature of the tissue damage determine whether healing occurs by resolution, regeneration, or replacement.ResolutionResolution represents the most complete form of healing, occurring when the injury is minimal and tissue...
Clot Retraction and Fibrinolysis
After a fibrin clot is formed, the next step is clot retraction, a vital process facilitated by platelet contractile proteins, such as actin and myosin. These proteins pull the fibrin strands closer together and condense the clot. This action reduces the size of the clot, creating a smaller, denser structure that effectively seals off the damaged vessel. Clot retraction consolidates the clot and helps with wound healing by bringing the edges of the damaged blood vessel closer together.
Transcription Factors
Tissue-specific transcription factors contribute to diverse cellular functions in mammals. For example, the gene for beta globin, a major component of hemoglobin, is present in all cells of the body. However, it is only expressed in red blood cells because the transcription factors that can bind to the promoter sequences of the beta globin gene are only expressed in these cells. Tissue-specific transcription factors also ensure that mutations in these factors may impair only the function of...

