Changes in the Acetylcholinesterase Enzymatic Activity in Tumor Development and Progression

Area of Science:

• Biochemistry
• Molecular Biology
• Oncology

Background:

• Acetylcholinesterase (AChE) is crucial for nerve transmission via acetylcholine hydrolysis.
• Beyond catalysis, AChE has non-catalytic roles, notably in apoptosis and cancer biology.
• Altered AChE expression and activity are observed in various tumors.

Purpose of the Study:

• To review the dual role of AChE in cancer: impacting apoptosis and inflammation.
• To explore how AChE's catalytic and non-catalytic functions influence cancer cell survival and aggressiveness.
• To analyze AChE regulation, including epigenetic control, mRNA expression, and enzymatic activity in tumors.

Main Methods:

• Literature review of studies on acetylcholinesterase in cancer.
• Analysis of AChE's involvement in apoptotic pathways (e.g., apoptosome formation).
• Examination of AChE's proposed pro-inflammatory role and its link to acetylcholine levels.

Main Results:

• Reduced AChE content may impair apoptosome assembly, increasing cancer cell survival.
• Overactivated acetylcholine receptors (AChR) due to reduced AChE activity can promote anti-apoptotic signaling.
• High AChE activity in tumors may promote inflammation by decreasing anti-inflammatory acetylcholine.

Conclusions:

• Acetylcholinesterase plays a complex, context-dependent role in cancer biology.
• AChE's influence on apoptosis and inflammation suggests its potential as a cancer therapeutic target.
• Understanding AChE regulation and function is key to developing novel cancer treatments.