Our team, "Cancer Immunotherapy and Cellular Reprogramming," investigates the co-evolution of cancer and immune cells to enhance the immune system's efficacy, overcome therapeutic resistance, and counteract metastatic progression.
At the intersection of the Immunology and Cancer research axes of Institut Cochin, our work stands out for its focus on tumor and immune cell factors that either promote or inhibit tumor progression, particularly in the context of anticancer therapies. Using molecular targets identified in our research, we aim to elucidate their roles in cellular regulation in both mouse models and human studies.
We are exploring the role of the epigenetic factor RINF in the reprogramming of (CAR)T cells, stromal cells, and tumor cells, as well as the impact of the enzyme IL4I1. The catabolic activity of IL4I1 impair immune cell effectiveness, particularly macrophages, in tumor control. Additionally, we investigate the cellular dynamics influenced by key cytokines (IFNs, TGFβ and GCSF), which modulate both the tumor microenvironment and metastatic progression.
In parallel, we aim to identify predictive biomarkers for immunotherapy success or failure. Our research underscores the critical need for myeloid cell reprogramming, complementing T lymphocyte-based approaches, to improve cancer treatments. We also analyze the synergistic interactions between these cell populations following anti-PD1/PDL1 therapies or interferon-inducing treatments.
Our ultimate goal is to lay the groundwork for targeting key factors in tumor evolution while refining Immunotherapy approaches, to develop innovative clinical solutions and transform cancer care.

The Team's Participation in the Triathlon des Roses

This weekend, three PhD students from our team took part in the Triathlon des Roses in Paris, an event that marks the launch of Pink October, the annual campaign raising awareness and supporting the fight against breast cancer.
They proudly crossed the finish line as the first women’s team to finish! 🏆💗
A wonderful sporting and collective initiative to support breast cancer research.
👏 Congratulations to them for their commitment and enthusiasm! A big thank you to the organizers for this inspiring event, and to everyone who contributes to advancing this important cause.

Contacts

Nadège Bercovici

Contact by email

Research Highlights and Events

Seradj M, Kari S, Llebaria Fabrias A, Rouault A, Herrmann A, Lengagne R, Kato M, Castellano F, Molinier-Frenkel V, Llebaria A, Bercovici N and A Prévost-Blondel. Conditional IL4I1 inactivation triggers tumor-associated macrophage reprogramming and CD8+ T cell reactivation. Cancer Immunol Res. CIR-24-1159. 2026.PMID: 41537775

  • This study uncovered a key role for IL4I1 in maintaining an immunosuppressive tumor microenvironment. We showed that targeting IL4I1 in macrophages restores antitumor immune responses through coordinated effects on tumor-associated macrophages and CD8⁺ T cells, highlighting its potential as a novel immunotherapy target.

Fumagalli M, An D, Simula L, Combe C, Aziez L, Simoni Y, Alves-Guerra MC, Valentini A, Marchais M, Vermare A, Moraly J, Manni S, Quadraccia MC, Quintarelli C, De Angelis B, Bercovici N, Donnadieu E, Pendino F. An in vivo CRISPR screen unveils promising target genes to improve CAR-T cell efficacy in a solid tumor model. Mol Ther. S1525-0016(26)00274-1. 2026.

  • Through a focused competitive CRISPR knockout screen in a human lung tumor model, we compared the relative efficacy of 50 gene targets proposed to enhance CAR-T cell persistence in vivo. Our screen identified some genes (ZC3H12A, SOCS1, PTPN2, and CDKN2A) as the most robust targets in this solid-tumor setting. Surprisingly, other gene edits (MED12) exhibited pro-, neutral, or anti-proliferative effects depending on the tumor context, demonstrating that the impact of gene editing on CAR-T cell persistence is highly context-dependent.

Zilio S, Rouault A, Seraj M, Marigo I, Prévost-Blondel A, Peranzoni E and N Bercovici. Beyond density: mapping the functional landscapes of macrophage-T lymphocyte niches in the tumor microenvironment. Front Immunol. DOI 10.3389/fimmu.2026.1851873.

  • Our review synthesizes emerging evidence that the spatial and functional organization of macrophage–T cell niches is a major determinant of antitumor immunity. It outlines how deciphering these immune ecosystems may reveal new biomarkers and therapeutic strategies to improve cancer immunotherapy.