Coinhibitory Molecule PD-1 as a Therapeutic Target in the Microenvironment of Multiple Myeloma

Author(s): Djordje Atanackovic, Tim Luetkens, Sabari Radhakrishnan, Nicolaus Kroger*.

Journal Name: Current Cancer Drug Targets

Volume 17 , Issue 9 , 2017

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Abstract:

Background: Patients with Multiple Myeloma suffer from dysregulation of the immune system and new therapeutic options targeting the immune systems such as monoclonal antibodies or specific Cell therapy such as CAR-T cells have entered clinical practice, but the exhausted immune system hampered a more effective immunotherapy. Targeting the immunological dysfunction in the microenviroment might be a potential target for immune-mediated therapies.

Method: Here we review the current literature and knowledge about the programmed death 1 (PD-1) receptor which is expressed on the surface of exhausted T and B cells and its ligand PD-L1 is expressed on myeloma cells and inhibits T cell-mediated apoptosis.

Results: The programmed death 1 (PD-1) receptor is expressed on the surface of exhausted T and B cells and its ligand PD-L1 is expressed on myeloma cells and inhibits Tcell-mediated apoptosis. Inhibiting such “checkpoint” by monoclonal antibodies recently has been shown high activity in solid tumors and malignant lymphomas. In patients with multiple myelomaPD-L1 is overexpressed on myeloma cells and PD1 on T-cells suggesting an active role of PD-1/PD-L1 in the immunosuppressive microenvironment.

Conclusion: Immunotherapies using anti-PD-1/PD-L1 strategies are a promising treatment options for patients with multiple myeloma.

Keywords: Coinhibitory molecule PD-1, microenvironment, multiple myeloma, T-cell-mediated apoptosis, PD-L1, immunosuppressive.

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Article Details

VOLUME: 17
ISSUE: 9
Year: 2017
Page: [839 - 845]
Pages: 7
DOI: 10.2174/1568009617666170906170348

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