Lenka Kasikova, Jana Rakova, Michal Hensler, Tereza Lanickova, Jana Tomankova, Josef Pasulka, Jana Drozenova, Katerina Mojzisova, Anna Fialova, Sarka Vosahlikova, Jan Laco, Ales Ryska, Pavel Dundr, Roman Kocian, Tomas Brtnicky, Petr Skapa, Linda Capkova, Marek Kovar, Jan Prochazka, Ivan Praznovec, Vladimir Koblizek, Alice Taskova, Hisashi Tanaka, Robert Lischke, Fernando Casas Mendez, Jiri Vachtenheim, Viola Heinzelmann-Schwarz, Francis Jacob, Iain A McNeish, Michal J Halaska, Lukas Rob, David Cibula, Sandra Orsulic, Lorenzo Galluzzi, Radek Spisek, Jitka Fucikova
Intratumoral tertiary lymphoid structures (TLSs) have been associated with improved outcome in various cohorts of patients with cancer, reflecting their contribution to the development of tumor-targeting immunity. Here, we demonstrate that high-grade serous ovarian carcinoma (HGSOC) contains distinct immune aggregates with varying degrees of organization and maturation. Specifically, mature TLSs (mTLS) as forming only in 16% of HGSOCs with relatively elevated tumor mutational burden (TMB) are associated with an increased intratumoral density of CD8+ effector T (TEFF ) cells and TIM3+ PD1+ , hence poorly immune checkpoint inhibitor (ICI)-sensitive, CD8+ T cells...
March 21, 2024: Nature Communications