Autophagy dysfunctions associated with cancer cells and their therapeutic implications

Area of Science:

• Oncology
• Cell Biology
• Molecular Medicine

Background:

• Core autophagy-related genes (ATG) mutations are rare in human cancers, but oncogenic events activating autophagy and lysosomal biogenesis are common.
• Autophagy is a fundamental cellular process crucial for maintaining homeostasis, with dysregulation implicated in tumorigenesis and disease development.
• The role of autophagy in cancer is context-dependent, potentially acting as a tumor suppressor or promoter.

Purpose of the Study:

• To review the molecular mechanisms of autophagy.
• To explore the multifaceted roles of autophagy in cell death and cancer development.
• To provide an overview of current therapeutic strategies involving autophagy modulators for cancer prevention and treatment.

Main Methods:

• Literature review of recent insights into autophagy.
• Analysis of molecular mechanisms governing autophagy.
• Examination of studies on autophagy's role in cancer progression and cell death.

Main Results:

• Autophagy can mitigate metabolic stress and prevent necrosis, thus acting as a tumor suppressor.
• Conversely, autophagy can promote tumor growth and survival in certain contexts.
• Combining autophagy inhibitors (e.g., chloroquine, hydroxychloroquine) with chemotherapy or radiotherapy may enhance anticancer efficacy.

Conclusions:

• Autophagy's dual role in cancer necessitates careful consideration for therapeutic interventions.
• Targeting autophagy, particularly through inhibition in combination therapies, offers promising avenues for improving cancer treatment.
• Further research into autophagy modulators is crucial for developing novel cancer prevention and therapeutic strategies.