Tumor cell "dead or alive": caspase and survivin regulate cell death, cell cycle and cell survival

Area of Science:

• Molecular biology
• Oncology
• Cellular homeostasis

Background:

• Cell death and cell cycle progression are tightly regulated processes essential for maintaining cellular homeostasis.
• Tumors arise from dysregulated control, exhibiting uncontrolled cell cycle progression and resistance to cell death.
• Caspases, cysteine proteases, are central to cell death pathways and are increasingly implicated in cell cycle regulation.

Purpose of the Study:

• To review the molecular mechanisms linking caspase activity to cell death and cell cycle regulation.
• To specifically examine the role of caspases in hepatocellular carcinoma (HCC) pathogenesis.
• To consolidate current understanding of caspase involvement in tumor biology.

Main Methods:

• Literature review of recent investigations on cell death and cell cycle.
• Analysis of studies hypothesizing caspase involvement in cell cycle regulation.
• Focus on molecular pathways in tumor, specifically HCC.

Main Results:

• Caspase family proteases play a dual role in both initiating cell death and regulating cell cycle progression.
• Dysregulation of caspase-mediated pathways contributes to the uncontrolled proliferation characteristic of tumors.
• Evidence suggests specific caspase involvement in the aberrant cell cycle of hepatocellular carcinoma cells.

Conclusions:

• Caspases are crucial regulators with a significant role in both cell death and cell cycle control.
• Understanding caspase functions offers potential therapeutic targets for cancer, including HCC.
• Further research into caspase-mediated cell cycle regulation is vital for cancer treatment strategies.