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Jun, an Oncological Foe or Friend?
Zuhayr Jafri1, Yue Li1, Jingwen Zhang1
1Vascular Biology and Translational Research, Department of Pathology, School of Biomedical Sciences, Faculty of Medicine and Health, University of New South Wales, Sydney, NSW 2052, Australia.
International Journal of Molecular Sciences
|January 25, 2025
Summary
The Jun protein, traditionally viewed as an oncoprotein, may also play a crucial role in preventing immune cell exhaustion and enhancing anti-tumour immunity, challenging its established oncogenic functions.
Area of Science:
- Molecular Biology
- Immunology
- Oncology
Background:
- Jun is a basic leucine zipper (bZIP) transcription factor, a key component of the activator protein-1 (AP-1) complex.
- Jun is expressed in immune and inflammatory cells, suggesting a role in immune regulation.
- Traditionally, Jun has been recognized as an oncoprotein involved in cancer development and progression.
Purpose of the Study:
- To critically examine the established role of Jun as an oncoprotein in cancer.
- To explore emerging evidence on Jun's function in immune responses.
- To investigate Jun's potential in preventing immune cell exhaustion and promoting anti-tumour efficacy.
Main Methods:
- Literature review and analysis of existing research on Jun's function.
- Examination of studies investigating Jun's role in both cancer cells and immune cells.
- Synthesis of evidence regarding Jun's impact on immune cell exhaustion and anti-tumour activity.
Main Results:
- Jun's traditional role as an oncoprotein regulating transformation and oncogenesis is well-documented.
- Emerging evidence indicates Jun's expression in immune cells.
- Preliminary data suggest Jun may counteract immune cell exhaustion and bolster anti-tumour responses.
Conclusions:
- The traditional view of Jun solely as an oncoprotein is incomplete.
- Jun exhibits a dual role, potentially acting as both a promoter of oncogenesis and a modulator of anti-tumour immunity.
- Further research into Jun's immunomodulatory functions could reveal novel therapeutic strategies for cancer treatment.
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