Related Experiment Video
Updated: Apr 21, 2026

06:51
Retinal Explant of the Adult Mouse Retina as an Ex Vivo Model for Studying Retinal Neurovascular Diseases
Published on: December 9, 2022
4.6K
Circadian angiogenesis
Biomolecular Concepts
|November 6, 2014
Summary
Disrupting daily circadian rhythms can increase disease risk by impairing angiogenesis regulation. Understanding circadian control of angiogenesis offers potential new therapeutic targets for diseases like cancer and cardiovascular disorders.
Area of Science:
- Physiology
- Pathology
- Chronobiology
Background:
- Daily rhythms are crucial for human physiology; disruptions increase disease risk.
- Diseases linked to circadian disruption (cancer, cardiovascular, metabolic, neurological) often involve deregulated angiogenesis.
- The link between circadian clock disruption and pathological angiogenesis is not well understood.
Purpose of the Study:
- To review current knowledge on circadian regulation of angiogenesis.
- To highlight advances in pre-clinical and clinical research linking circadian disruption to angiogenesis in diseases.
- To discuss the potential of the circadian clock as a therapeutic target for angiogenesis-related disorders.
Main Methods:
- Literature review of pre-clinical and clinical studies.
- Analysis of research on cancer, cardiovascular disorders, and obesity.
- Synthesis of evidence on direct and indirect regulation of angiogenic factors by circadian machinery.
Main Results:
- Circadian clock disruption impairs physiological regulation of angiogenesis.
- Evidence suggests both direct and indirect regulation of angiogenic factors by cellular and circulating circadian factors.
- Circadian regulation plays a role in the development and progression of angiogenesis-dependent diseases.
Conclusions:
- Circadian regulation is important for angiogenesis.
- Circadian clock machinery and factors influence angiogenic processes.
- Targeting the circadian clock may offer novel pro- or anti-angiogenic therapeutic strategies for various diseases.
Related Concept Videos
Regulation of Angiogenesis and Blood Supply
2.9K
Rapidly dividing tumors, embryos, and wounded tissues require more oxygen than usual, lowering the oxygen concentration in the blood. At low oxygen or hypoxic conditions, an oxygen-sensitive transcription factor called the hypoxia-inducible factor 1 or HIF1 is activated. HIF1 is a dimeric protein of alpha (ɑ) and beta (β) subunits. Under optimal oxygen conditions, HIF1β is present in the nucleus while HIF1ɑ remains in the cytosol. HIF1ɑ is hydroxylated by prolyl...
2.9K
Mechanism of Angiogenesis
6.3K
Blood vessel formation starts early during embryonic development, around day 7. In the extraembryonic yolk sac, mesodermal precursor cells called hemangioblast proliferate and differentiate into angioblast. Angioblasts express vascular endothelial growth factor receptor 2 or VEGFR2, which binds VEGF-A, a proangiogenic factor, guiding blood vessel formation. VEGF signaling promotes angioblasts to form a blood island in the developing embryo. Angioblasts further differentiate, giving rise to...
6.3K
Circadian Rhythms and Gene Regulation
3.4K
The biological clock is involved in many aspects of regulating complex physiology in all animals. It was in 1935 when German zoologists, Hans Kalmus and Erwin Bünning, discovered the existence of circadian rhythm in Drosophila melanogaster. However, the internal molecular mechanisms behind the circadian clock remained a mystery until 1984, when Jeffrey C. Hall, Michael Rosbash, and Michael W. Young discovered the expression of the Per gene oscillating over a 24-hour cycle. In subsequent...
3.4K
Circadian Rhythms and Gene Regulation
2.1K
2.1K
Autoregulation of Blood Flow
9.7K
Autoregulation mechanisms are characterized by their inherent capacity for self-regulation without necessitating specific nervous stimulation or endocrine control. These mechanisms facilitate the adjustment of blood flow and, therefore, perfusion specific to each tissue region. This self-regulation encompasses chemical signals and myogenic controls.
Chemical Signaling in Autoregulation
Chemical signaling operates at the precapillary sphincter level, inciting either contraction or relaxation....
Chemical Signaling in Autoregulation
Chemical signaling operates at the precapillary sphincter level, inciting either contraction or relaxation....
9.7K
Development of Blood Vessels
2.0K
The development of the vascular system in a fetus is a complex and intricate process that begins as early as 15 to 16 days post-conception. This process starts outside the embryo, specifically in the mesoderm of the yolk sac, chorion, and connecting stalk. Approximately two days later, the formation of blood vessels occurs within the embryo itself.
The initial formation of this system is facilitated by the small amount of yolk present in the ovum and yolk sac. Blood vessels originate from...
The initial formation of this system is facilitated by the small amount of yolk present in the ovum and yolk sac. Blood vessels originate from...
2.0K

