Tumor-associated B cells and humoral immune response in head and neck squamous cell carcinoma

Lechner, Axel; Schlösser, Hans A.; Thelen, Martin; Wennhold, Kerstin; Rothschild, Sacha; Gilles, Ramona; Quaas, Alexander; Siefer, Oliver G.; Huebbers, Christian U.; Cukuroglu, Engin; Goeke, Jonathan; Hillmer, Axel; Gathof, Birgit; Meyer, Moritz F.; Klussmann, Jens P.; Shimabukuro-Vornhagen, Alexander; Theurich, Sebastian; Beutner, Dirk und Bergwelt-Baildon, Michael von (2019): Tumor-associated B cells and humoral immune response in head and neck squamous cell carcinoma. In: Oncoimmunology, Bd. 8, Nr. 3, e1535293

Abstract

B lymphocytes are important players in immune responses to cancer. However, their composition and function in head and neck squamous cell carcinoma (HNSCC) has not been well described. Here, we analyzed B cell subsets in HNSCC (n = 38), non-cancerous mucosa (n = 14) and peripheral blood from HNSCC patients (n = 38) and healthy controls (n = 20) by flow cytometry. Intratumoral B cells contained high percentages of activated (CD86(+)), antigen-presenting (CD86(+)/CD21(-)) and memory B cells (IgD(-)/CD27(+)). T follicular helper cells (CD4(+)/CXCR5(+)/CD45RA(-)/CCR7(-)) as key components of tertiary lymphoid structures and plasma cells made up high percentages of the lymphocyte infiltrate. Percentages of regulatory B cell varied depending on the regulatory phenotype. Analysis of humoral immune responses against 23 tumor-associated antigens (TAA) showed reactivity against at least one antigen in 56% of HNSCC patients. Reactivity was less frequent in human papillomavirus associated (HPV+) patients and healthy controls compared to HPV negative (HPV-) HNSCC. Likewise, patients with early stage HNSCC or MHC-I loss on tumor cells had low TAA responses. Patients with TAA responses showed CD4(+) dominated T cell infiltration compared to mainly CD8(+) T cells in tumors without detected TAA response. To summarize, our data demonstrates different immune infiltration patterns in relation to serological TAA response detection and the presence of B cell subpopulations in HNSCC that can engage in tumor promoting and antitumor activity. In view of increasing use of immunotherapeutic approaches, it will be important to include B cells into comprehensive phenotypic and functional analyses of tumor-associated lymphocytes.

• Dokumententyp: Zeitschriftenartikel
• Fakultät: Medizin
• Themengebiete: 600 Technik, Medizin, angewandte Wissenschaften > 610 Medizin und Gesundheit
• ISSN: 2162-402X
• Sprache: Englisch