Related Experiment Video
Updated: May 12, 2026
07:56
Modified Yeast-Two-Hybrid System to Identify Proteins Interacting with the Growth Factor Progranulin
Published on: January 17, 2012
Progranulin and Inflammation-Induced Cancer: An Important Player in the Tumor Microenvironment?
Gaia Insinga1, Caterina Tomassetti2,3, Vrunda Satasiya3,4
1Department of Mental and Physical Health and Preventive Medicine, University of Campania "Luigi Vanvitelli", Napoli, Italy.
Journal of Cellular Physiology
|May 11, 2026
Summary
Progranulin (PGRN) drives tumor progression and inflammation by reprogramming the tumor microenvironment (TME). Understanding PGRN
Area of Science:
- Oncology
- Immunology
- Molecular Biology
Background:
- Progranulin (PGRN) is a glycoprotein involved in tumor progression and inflammation.
- PGRN acts as both an oncogenic driver and an immunomodulatory molecule within the tumor microenvironment (TME).
Purpose of the Study:
- To review the multifaceted roles of PGRN in the TME.
- To focus on PGRN's functions in immune and stromal cells contributing to tumor progression and immune evasion.
Main Methods:
- Literature review of PGRN's functions in the TME.
- Analysis of PGRN's impact on immune cell polarization and function.
- Examination of PGRN's effects on stromal components like CAFs and angiogenesis.
Main Results:
- PGRN reprograms the TME towards an immunosuppressive state via TNFR2/STAT3 and PI3K/AKT pathways.
- PGRN promotes M2 macrophage polarization, PD-L1 expression, and regulatory T-cell stability.
- PGRN suppresses CD8+ T-cell and NK-cell cytotoxicity, fostering immune evasion and activating CAFs.
Conclusions:
- PGRN is a central orchestrator of tumor-associated inflammation, promoting tumor growth and immune evasion.
- Further research into PGRN's roles in myeloid-derived suppressor cells and neutrophils is needed.
- Targeting PGRN may offer novel strategies to enhance anti-tumor immunity and overcome therapeutic resistance.
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