Project description:Recent work has shown that the spatial organization of immune responses is a critical determinant of anti-tumor immunity. Here, we profiled ten head and neck squamous cell carcinoma (HNSCC) patient tumors and one ameloblastoma tumor using Xenium V1 spatial transcriptomics. The 10X genomics human multi-tissue and cancer gene expression panel targeting 377 genes was used in combination with 100 custom Xenium probes targeting patient-specific CDR3 regions of T cell receptors (TCRs) in T cells, additoinal T cell specific genes, HPV oncoprotein genes, and tumor genes of interest. This enabled the detection of 477 transcripts within each tumor sample at a single-cell resolution. For seven of the ten HNSCC samples, different tissue sections run on different days were analyzed as technical replicates. Together, these findings introduce a scalable platform for spatial clonal T cell analysis and provide new insight into the spatial relationship of cells within the HNSCC tumor microenvironment.
Project description:Xenium Spatial Transcriptomics of Cisplatin-Resistant Head and Neck Tumors in Humanized Mice Treated with PI3K Inhibitor Gedatolisib
Project description:The therapeutic potential of the PI3K inhibitor gedatolisib on head and neck tumor progression, the tumor microenvironment, and immune cell infiltration was investigated using a humanized orthotopic mouse model implanted with cisplatin-resistant HN30R8 cells.
Project description:Angiosarcomas are rare malignant tumors of the endothelium, arising commonly from the head and neck region (AS-HN) and recently associated with ultraviolet (UV) exposure and human herpesvirus-7 (HHV-7) infection. We examined 81 cases of angiosarcomas, including 47 cases of AS-HN, integrating information from whole genome sequencing, gene expression profiling and spatial transcriptomics (10X Visium). In this dataset spatial transcriptomics revealed topological profiles of the tumor microenvironment, identifying dominant but tumor-excluded inflammatory signals in “immune-hot” cases and immune foci even in otherwise “cold” cases. In conclusion, spatial transcriptomics reveal the tumor immune landscape of angiosarcoma, and in combination with multi-omic information, may improve implementation of treatment strategies.
Project description:Sage performed on microdissection of Head and Neck tumor, and Head and Neck normal tissue comparative analysis of gene expression profiles of head and neck squamous cell carcinoma and Head and Neck normal tissue
Project description:Human papillomavirus (HPV) is a major causative factor of head and neck squamous cell carcinoma (HNSCC), and the incidence of HPV-associated HNSCC is increasing. The role of tumor microenvironment (TME) in viral infection and metastasis needs to be explored further. Thus we studied the molecular characteristics of primary tumors (PTs) and lymph node metastatic tumors (LNMTs) by stratifying them based on their HPV status using spatial transcriptomics.
Project description:We collected HNSCC primary tumor sections from head and neck squamous cell carcinoma patients at the Taipei Veterans General Hospital (TVGH) for 10x Genomics Visium analysis.