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Autophagy

Autophagy

Autophagy is a self-digesting process by which a cell protects itself from threats both within and outside the cell, ranging from abnormal proteins to invading bacteria. In this process, obsolete components of the cell and invading microbes are degraded by hydrolytic enzymes active in an acidic environment of the lysosomal lumen.
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Delivery Pathways to the Lysosome

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Endocytosis
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Autophagic Cell Death

Autophagic Cell Death

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Phagocytosis of Apoptotic Cells

Phagocytosis of Apoptotic Cells

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Normal cells contain receptors that prevent them from being recognized by phagocytes.

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The Intrinsic Apoptotic Pathway

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Related Experiment Video

Updated: Jun 2, 2026

Exploring the Regulation of Lipid Droplet Catabolism through Lipophagy

Exploring the Regulation of Lipid Droplet Catabolism through Lipophagy

Published on: January 31, 2025

Autophagy process is associated with anti-neoplastic function.

Chong Wang¹, Yachen Wang, Michael A McNutt

¹Key Laboratory of Carcinogenesis and Translational Research, Department of Biochemistry and Molecular Biology, Ministry of Education, Health Science Center, Peking University, Beijing, China.

Acta Biochimica Et Biophysica Sinica

|April 29, 2011

Summary

Autophagy, a cellular degradation process, is crucial for maintaining cell health and preventing cancer. This study explores how autophagy acts as an anti-neoplastic mechanism by clearing damaged components and involving tumor suppressors.

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Published on: July 21, 2017

Area of Science:

Cell Biology
Molecular Biology
Oncology

Background:

Autophagy is a fundamental cellular process conserved across species, essential for maintaining homeostasis.
It regulates the turnover of cellular components and prevents the accumulation of damaged proteins and organelles.
Dysfunctional autophagy is linked to various diseases, including cancer.

Purpose of the Study:

To investigate the role of autophagy in anti-neoplastic functions.
To elucidate the mechanisms by which autophagy inhibits tumor formation.
To highlight the involvement of tumor suppressors in inducing autophagy for cancer prevention.

Main Methods:

Literature review and synthesis of existing research on autophagy and cancer.
Analysis of the roles of key tumor suppressors (e.g., beclin 1, FoxO, mTOR inhibitors, p53) in autophagy induction.
Examination of how autophagy prevents carcinogenesis.

Main Results:

Autophagy plays a critical role in preventing the accumulation of cellular damage, thereby inhibiting cancer development.
Several tumor suppressor proteins, including beclin 1-associated proteins, Forkhead box O (FoxO) family proteins, mammalian target of Rapamycin (mTOR) inhibitors, and nuclear p53, are involved in inducing autophagy.
The process of autophagy is intrinsically linked to anti-neoplastic functions.

Conclusions:

Autophagy is a key cellular mechanism with significant anti-cancer properties.
Targeting autophagy pathways presents a potential strategy for cancer therapy and prevention.
Understanding the interplay between tumor suppressors and autophagy is vital for advancing cancer research.