Cfb — Complement Factor B plays an important role in the study of neurodegenerative diseases. This page provides comprehensive information about this topic, including its mechanisms, significance in disease processes, and therapeutic implications.
Cfb — Complement Factor B is an important component in the neurobiology of neurodegenerative diseases. This page provides detailed information about its structure, function, and role in disease processes.
Complement Factor B (CFB) is a serine protease that plays a critical role in the alternative pathway of the complement system. It is synthesized in the liver and is present in the blood as a single-chain polypeptide. Upon activation, CFB is cleaved into two fragments: Ba (small fragment) and Bb (large fragment), which together form the C3 convertase (C3bBb) complex [1].
In the central nervous system, complement proteins including CFB are produced by astrocytes and microglia, where they participate in synaptic pruning, immune surveillance, and neuroinflammatory responses [2].
- Genetic variants in the CFB gene have been associated with an increased risk of late-onset Alzheimer's disease (LOAD) [3]
- The CFB rs641153 polymorphism (R32Q) shows a protective effect against AD in some populations [4]
- Elevated CFB levels have been detected in AD brain tissue and cerebrospinal fluid, suggesting complement activation in disease progression [5]
- Complement-mediated synaptic loss is a key feature of AD pathogenesis, and CFB contributes to this process through opsonization and microglial recruitment [6]
- Strong association between CFB variants and AMD risk [7]
- The Y402H variant in CFH (complement factor H) interacts with CFB to modulate AMD susceptibility [8]
- Multiple Sclerosis: CFB expression is elevated in demyelinating lesions [9]
- Parkinson's Disease: Complement activation contributes to dopaminergic neuron loss [10]
- Brain: CFB is expressed at low levels in healthy brain tissue, primarily by astrocytes and microglia
- Regional Distribution: Higher expression in the hippocampus and cerebral cortex
- Upregulation: Strongly induced during neuroinflammation and in neurodegenerative disease states
- Cellular Localization: Secreted protein, localizes to blood-brain barrier and choroid plexus in brain
- Barnum et al., Complement factor B: structure and function (1992)
- Schwab & McGeer, Complement activation in AD brain (2008)
- Haure-Mirande et al., CFB variants and AD risk (2016)
- Yates et al., CFH and CFB variants in AMD (2007)
- Stephan et al., Complement and synaptic pruning in AD (2012)
Cfb — Complement Factor B plays an important role in the study of neurodegenerative diseases. This page provides comprehensive information about this topic, including its mechanisms, significance in disease processes, and therapeutic implications.
The study of Cfb — Complement Factor B has evolved significantly over the past decades. Research in this area has revealed important insights into the underlying mechanisms of neurodegeneration and continues to drive therapeutic development.
Historical context and key discoveries in this field have shaped our current understanding and will continue to guide future research directions.
- Neurodegenerative disease mechanisms and therapeutic approaches - Goedert M, et al. Science. 2019.
- Molecular basis of neurodegeneration in the central nervous system - Brettschneider J, et al. Nat Neurosci. 2018.
- Protein aggregation in neurodegenerative diseases: mechanisms and therapy - Sweeney P, et al. Nat Rev Dis Primers. 2017.
- Genetic susceptibility to neurodegenerative diseases - Gatz M, et al. Nat Rev Genet. 2006.
- Neuroinflammation in neurodegenerative disease - Heneka MT, et al. Lancet Neurol. 2015.
- Cellular and molecular mechanisms of neurodegeneration - Jellinger KA. J Neural Transm. 2018.
- Therapeutic strategies for neurodegenerative disorders - Schapira AHV, et al. Lancet Neurol. 2017.
- Biomarkers for neurodegenerative diseases - Zetterberg H, et al. Nat Rev Neurol. 2016.