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ccr-22-1681_supplementary_table_s2_clinical_trials_of_cd39_inhibitors_supp_ts2.docx (20.97 kB)

Supplementary Table S2: Clinical trials of CD39 inhibitors from ENPP1 Immunobiology as a Therapeutic Target

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posted on 2023-06-13, 08:24 authored by Borja Ruiz-Fernández de Córdoba, Rafael Martínez-Monge, Fernando Lecanda

Clinical trials of CD39 inhibitors

Funding

Centro de Investigación Biomédica en Red de Cáncer (CIBERONC)

Fundación Científica Asociación Española Contra el Cáncer (AECC)

Gobierno de Navarra (Government of Navarra)

Instituto de Salud Carlos III (ISCIII)

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ARTICLE ABSTRACT

ENPP1 (ecto-nucleotide pyrophosphatase/phosphodiesterase) participates in the hydrolysis of different purine nucleotides in an array of physiologic processes. However, ENPP1 is frequently overexpressed in local relapses and tumor metastases, which are associated with poor prognosis and survival in a range of solid tumors. ENPP1 promotes an immunosuppressive tumor microenvironment (TME) by tilting the balance of ATP/adenosine (Ado) in conjunction with other components (CD38, CD39/ENTPD1, and CD73/NT5E). Moreover, ENPP1 intersects with the stimulator of interferon genes (STING), impairing its robust immune response through the hydrolysis of the effector 2´,3´-cyclic GMP–AMP. Thus, ENPP1 blockade emerges as a unique target eliciting immune remodeling and leveraging the STING pathway. Several ENPP1 inhibitors have shown an immunostimulatory effect, and their combination with other therapeutic modalities, such as immune-checkpoint blockade, STING activation, DNA damage response (DDR) inhibitors, and radiotherapy (RT), represents a promising avenue to boost antitumor–immune responses and to improve current clinical outcomes in several tumors. This comprehensive review summarizes the current state of the art and opens new perspectives for novel treatment strategies.

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