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The excessive desmoplasia in PDAC promotes T-cell migration by contact guidance, which abrogates tumor cell-directed movement. Furthermore, dense collagen networks represent a physical barrier, additionally rearranging T-cell distribution to favor tumor stroma. These mechanisms are mainly responsible for intrastromal T-cell trapping in pancreatic cancer and may hinder the development of T-cell-based immunotherapies.
Hartmann et al. (Thu,) studied this question.
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