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Target intelligence / Profile preview
B-cell lymphoma-extra large protein (Bcl-xL)
- Target
- Bcl-xL
- Molecular classification
- Bcl-2 family protein, Anti-apoptotic protein
01
Overview
B-cell lymphoma-extra large protein (Bcl-xL) is an anti-apoptotic member of the Bcl-2 protein family. It is encoded by the BCL2-like 1 gene and primarily resides in the mitochondrial outer membrane. Bcl-xL prevents apoptosis by inhibiting the release of cytochrome c from the mitochondria, thereby blocking caspase activation. Overexpression of Bcl-xL is associated with tumor progression and chemoresistance in various cancers, making it a target for therapeutic intervention. Beyond apoptosis, Bcl-xL is also involved in autophagy, neuronal survival, calcium signaling, and cellular senescence.
- Other names
- BCL2-like 1 proteinBcl2L1
02
Mechanism of action
Inhibition of pro-apoptotic protein activity by direct binding, preventing cytochrome c release and subsequent caspase activation.
03
Biological functions
Anti-apoptosisRegulation of apoptosisRegulation of autophagyNeuronal survivalModulation of calcium signalingRegulation of cellular senescence
04
Disease associations
CancerNeurodegenerative diseasesAutoimmune diseasesAge-related conditions
05
Safety considerations
Potential for on-target toxicities due to broad role in cell survivalDevelopment of resistance mechanisms
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