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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.
Abstract:
Galectins are animal lectins with specific affinity for galactosides via the conserved carbohydrate recognition domains. Increasing studies recently have identified critical roles of galectin family members in tumor progression. Abnormal expression of galectins contributes to the proliferation, metastasis, epithelial-mesenchymal transformation (EMT), immunosuppression, radio-resistance and chemoresistance in various cancers, which has attracted cumulative clinical interest in galectin-based cancer treatment. Galectin family members have been reported to participate in autophagy regulation under physiological conditions and in non-tumoral diseases, and implication of galectins in multiple processes of carcinogenesis also involves regulation of autophagy, however, the relationship between galectins, autophagy and cancer remains largely unclear. In this review, we introduce the structure and function of galectins at the molecular level, summarize their engagements in autophagy and cancer progression, and also highlight the regulation of autophagy by galectins in cancer as well as the therapeutic potentials of galectin and autophagy-based strategies. Elaborating on the mechanism of galectin-regulated autophagy in cancers will accelerate the exploitation of galectins-autophagy targeted therapies in treatment for cancer.
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.
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