Galectins and galectin-mediated autophagy regulation: new insights into targeted cancer therapy

Dan Liu1, Hongtao Zhu2, Chuanzhou Li3

  • 1Department of Medical Genetics, School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.

Biomarker Research
|February 23, 2023
PubMed

Insights

Galectins, proteins involved in cell adhesion, play key roles in cancer progression by influencing cell growth and spread. Understanding galectin-regulated autophagy offers new therapeutic strategies for cancer treatment.

Area of Science:

  • Molecular Biology
  • Oncology
  • Cell Biology

Background:

  • Galectins are animal lectins mediating cell recognition and adhesion through carbohydrate-binding domains.
  • Aberrant galectin expression is increasingly linked to tumor progression, including proliferation, metastasis, and resistance to therapy.
  • Galectins are implicated in autophagy regulation in physiological and pathological conditions, but their role in cancer-associated autophagy is not fully understood.

Purpose of the Study:

  • To review the structure and function of galectins at a molecular level.
  • To summarize the involvement of galectins in autophagy and cancer progression.
  • To highlight the therapeutic potential of targeting galectins and autophagy in cancer treatment.

Main Methods:

  • Literature review synthesizing current research on galectins, autophagy, and cancer.
  • Analysis of molecular mechanisms underlying galectin-regulated autophagy in various cancers.
  • Evaluation of preclinical and clinical data on galectin- and autophagy-targeted cancer therapies.

Main Results:

  • Galectins modulate key cancer hallmarks, including proliferation, epithelial-mesenchymal transition (EMT), and immune evasion.
  • Galectins influence multiple stages of autophagy, a cellular degradation process crucial for cancer cell survival and adaptation.
  • The interplay between galectins and autophagy represents a significant area for developing novel cancer treatment strategies.

Conclusions:

  • Galectins are critical regulators of cancer progression through diverse mechanisms, including the modulation of autophagy.
  • Targeting the galectin-autophagy axis holds promise for innovative cancer therapies.
  • Further elucidation of these mechanisms will accelerate the clinical application of galectin- and autophagy-based treatments.

Related Concept Videos

Targeted Cancer Therapies02:57

Targeted Cancer Therapies

The targeted cancer therapies, also known as “molecular targeted therapies,” take advantage of the molecular and genetic differences between the cancer cells and the normal cells. It needs a thorough understanding of the cancer cells to develop drugs that can target specific molecular aspects that drive the growth, progression, and spread of cancer cells without affecting the growth and survival of other normal cells in the body.
There are several types of targeted therapies against...
7.8K
Autophagy01:27

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.
An autophagic pathway consists of a series of signaling events activated in response to diverse stress and physiological conditions such as food deprivation,...
4.4K
Delivery Pathways to the Lysosome01:36

Delivery Pathways to the Lysosome

Eukaryotic cells use different mechanisms to eliminate toxic waste obsolete and worn-out substances. Lysosomes play a pivotal role in this, and hence, these substances are carried to the lysosome from other parts of the cell and extracellular space through different pathways. The most elaborately studied pathways to the lysosome are the endocytic pathways.
Endocytosis
In endocytosis, the cell membrane takes up macromolecules and particles from the surrounding medium. Clathrin-mediated...
6.7K
Receptor Downregulation in MVBs01:15

Receptor Downregulation in MVBs

Multivesicular bodies (MVBs) are mature endosomes that sort ubiquitinated proteins and then fuse with lysosomes to degrade the sorted proteins. Epidermal growth factor (EGF) and its receptor (EGFR) form a complex that can be internalized through endocytosis, sorted into an MVB, and later degraded.
The EGFR can initiate signaling pathways that  lead to cell proliferation, migration, and differentiation. Overexpression of EGFR  stimulates cells to proliferate. Excessive  EGFR...
2.1K
Autophagic Cell Death01:18

Autophagic Cell Death

Christian de Duve discovered “autophagy,” a process in which cellular components are engulfed by membrane-bound organelles called autophagosomes. The autophagosomes then fuse with lysosomes to digest the enclosed contents. Autophagy is generally activated in cells to prevent cell death. However, cell death is triggered when the damage is beyond repair.
Autophagy and Apoptosis
Autophagy can activate apoptosis. In normal conditions, the autophagy activating protein Beclin-1 and...
3.5K
mTOR Signaling and Cancer Progression03:03

mTOR Signaling and Cancer Progression

The mammalian target of rapamycin or mTOR protein was discovered in 1994 due to its direct interaction with rapamycin. The protein gets its name from a yeast homolog called TOR. The mTOR protein complex in mammalian cells plays a major role in balancing anabolic processes such as the synthesis of proteins, lipids, and nucleotides and catabolic processes, such as autophagy in response to environmental cues, such as availability of nutrients and growth factors.
The mTOR pathway or the...
3.8K