READ ME File For 'Engineering Chimeric Antigen Receptor (CAR) T Cells with Novel Costimulatory Domains dataset' Dataset DOI: 10.5258/SOTON/PG/D147 ReadMe Author: Hatice Nurdan Aksoy Kilinc, University of Southampton ORCID ID https://orcid.org/0000-0002-4081-977X This dataset supports the thesis: Aksoy Kilinc, H. N. (2026). Engineering chimeric antigen receptor (CAR) T cells with novel costimulatory domains. [Doctoral Thesis, University of Southampton]. https://doi.org/10.5258/SOTON/PG/T147 Date of data collection: [2021-2025] Information about geographic location of data collection: University of Southampton, United Kingdom (laboratory-based experimental work) Licence: Creative Commons Attribution 4.0 International (CC BY 4.0) Related projects/Funders: This research was primarily funded by the Republic of Türkiye, Ministry of National Education, with additional support from the Gerald Kerkut Charitable Trust. -------------------- DATA & FILE OVERVIEW -------------------- This dataset contains experimental data supporting multiple chapters of the thesis: Chapter 3 – Chronic antigen stimulation and in vitro functional assays Excel datasets from chronic antigen stimulation experiments GraphPad Prism files for data analysis Cytotoxicity assay Prism files Jurkat assay data including CD69 and IL-2 readouts from patient samples Seahorse metabolic assay data Chapter 4 – In vivo tumour models Early-stage tumour growth analysis (GraphPad Prism files and Excel data) Late-stage tumour experiments: Flow cytometry raw data files Processed flow cytometry data GraphPad Prism analysis files Survival curve datasets Chapter 5 – Humanised mouse model experiments Humanised mouse in vivo experimental data GraphPad Prism analysis files Additional supporting Prism datasets for immune response and tumour progression analysis Notes Data were generated using CAR T-cell engineering experiments with novel costimulatory domains Both in vitro (Jurkat, primary T cells, patient samples) and in vivo (NSG and humanised mouse models) systems were used Flow cytometry data were analysed using FlowJo v10 Statistical analysis and data visualisation were performed using GraphPad Prism v9 and Microsoft Excel Flow cytometry datasets include raw and processed outputs