Meeki Lad, Angad S. Beniwal, Saket Jain, Poojan Shukla, Venina Kalistratova, Jangham Jung, Sumedh S. Shah, Garima Yagnik, Atul Saha, Ankita Sati, Husam Babikir, Alan T. Nguyen, Sabraj Gill, Jennifer Rios, Jacob S. Young, Austin Lui, Diana Salha, Aaron Diaz, Manish K. Aghi
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引用次数: 0
Abstract
Tumor-associated neutrophil (TAN) effects on glioblastoma (GBM) biology remain under-characterized. We show here that neutrophils with dendritic features—including morphological complexity, expression of antigen presentation genes, and the ability to process exogenous peptide and stimulate major histocompatibility complex (MHC)II-dependent T cell activation—accumulate intratumorally and suppress tumor growth in vivo. Trajectory analysis of patient TAN scRNA-seq identifies this “hybrid” dendritic-neutrophil phenotype as a polarization state that is distinct from canonical cytotoxic TANs, and which differentiates from local precursors. These hybrid-inducible immature neutrophils—which we identified in patient and murine glioblastomas—arise not from circulation, but from local skull marrow. Through labeled skull flap transplantation and targeted ablation, we characterize calvarial marrow as a contributor of antitumoral myeloid antigen-presenting cells (APCs), including TANs, which elicit T cell cytotoxicity and memory. As such, agents augmenting neutrophil egress from skull marrow—such as intracalvarial AMD3100, whose survival-prolonging effect in GBM we report—present therapeutic potential.
期刊介绍:
Cancer Cell is a journal that focuses on promoting major advances in cancer research and oncology. The primary criteria for considering manuscripts are as follows:
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Mechanism-based proof-of-principle studies: Cancer Cell encourages the publication of mechanism-based proof-of-principle clinical studies, which demonstrate the feasibility of a specific therapeutic approach or diagnostic test.