Please use this identifier to cite or link to this item: http://dx.doi.org/10.25673/112605
Title: Immune modulatory effects of lapatinib and erlotinib on EGFR-associated pathways in head and neck squamous cell carcinoma
Author(s): Yang, BoLook up in the Integrated Authority File of the German National Library
Referee(s): Seliger, BarbaraLook up in the Integrated Authority File of the German National Library
Wickenhauser, Claudia
Horstkorte, RüdigerLook up in the Integrated Authority File of the German National Library
Bachmann, Michael
Granting Institution: Martin-Luther-Universität Halle-Wittenberg
Issue Date: 2023
Extent: 1 Online-Ressource (V, 64 Seiten, Seite VI-VII)
Type: HochschulschriftLook up in the Integrated Authority File of the German National Library
Type: PhDThesis
Exam Date: 2023-12-06
Language: English
URN: urn:nbn:de:gbv:3:4-1981185920-1145621
Abstract: Treatment of head and neck squamous cell carcinoma (HNSCC) remains a challenge despite advanced therapies. Epidermal growth factor receptor (EGFR) and transforming growth factor β (TGFβ) negatively impact immune responses in HNSCC. This study explores the impact of EGFR inhibitors (lapatinib, erlotinib) on immune-related molecules and HNSCC immunogenicity. Inhibitors increased HLA-ABC expression and reduced programmed cell death ligand-1 (PD-L1) in HNSCC cell lines. EGFR phosphorylation and downstream proteins AKT and ERK were reduced in certain cell lines. EGFR inhibitor treatment elevated TGFβ-related mRNA levels, potentially explaining AKT and ERK activation. Tyrosine kinase inhibitor (TKI) treatment modulated chemokines and immune cell infiltration in HNSCC patient tissue samples. Altered HLA-ABC and PD-L1 expression suggest combining TKIs with immunotherapy may enhance outcomes for HNSCC patients.
Die Behandlung von Kopf-Hals-Plattenepithelkarzinomen (HNSCC) bleibt trotz fortschrittlicher Therapieansätze eine Herausforderung. EGFR- und TGFβ-Signalwege beeinträchtigen negativ die Immunantworten bei HNSCC. Diese Studie untersucht die Auswirkungen von EGFR-Inhibitoren (Lapatinib, Erlotinib) auf immunrelevante Moleküle und die Immunogenität von HNSCC. Inhibitoren erhöhten HLA-ABC-Expression und reduzierten PD-L1 in HNSCC-Zelllinien. EGFR-Phosphorylierung und Proteine AKT und ERK wurden in bestimmten Zelllinien vermindert. EGFR-Inhibitorbehandlung erhöhte TGFβ-mRNA-Levels, was möglicherweise AKT- und ERK-Aktivierung erklärt. Tyrosinkinase-Inhibitorbehandlung modulierte Chemokine und Immunzellen-Infiltration in HNSCC-Patientengewebe. Veränderte HLA-ABC- und PD-L1-Expression deutet darauf hin, dass TKIs in Kombination mit Immuntherapie die Ergebnisse für HNSCC-Patienten verbessern könnten.
URI: https://opendata.uni-halle.de//handle/1981185920/114562
http://dx.doi.org/10.25673/112605
Open Access: Open access publication
License: (CC BY 4.0) Creative Commons Attribution 4.0(CC BY 4.0) Creative Commons Attribution 4.0
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