Tissue-Resident Macrophages in Pancreatic Ductal Adenocarcinoma Originate from Embryonic Hematopoiesis and Promote Tumor Progression.

Tissue-Resident Macrophages in Pancreatic Ductal Adenocarcinoma Originate from Embryonic Hematopoiesis and Promote Tumor Progression.
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DOI:
10.1016/j.immuni.2017.07.014
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发表时间:
2017-08-15
期刊:
影响因子:
32.4
通讯作者:
DeNardo DG
DeNardo DG
中科院分区:
医学1区
文献类型:
--
作者:
Zhu Y;Herndon JM;Sojka DK;Kim KW;Knolhoff BL;Zuo C;Cullinan DR;Luo J;Bearden AR;Lavine KJ;Yokoyama WM;Hawkins WG;Fields RC;Randolph GJ;DeNardo DG

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Tumor-associated macrophages (TAMs) are essential components of the cancer microenvironment and play critical roles in the regulation of tumor progression. Optimal therapeutic intervention requires in-depth understanding of the sources that sustain macrophages in malignant tissues. In this study, we investigated the ontogeny of TAMs in murine pancreatic ductal adenocarcinoma (PDAC) models. We identified both inflammatory monocytes and tissue-resident macrophages as sources of TAMs. Unexpectedly, significant portions of pancreas-resident macrophages originated from embryonic development and expanded through in situ proliferation during tumor progression. Whereas monocyte-derived TAMs played more potent roles in antigen presentation, embryonically derived TAMs exhibited a pro-fibrotic transcriptional profile, indicative of their role in producing and remodeling extracellular matrix molecules. Collectively, these findings uncover the heterogeneity of TAM origin and functions, and could provide therapeutic insight for PDAC treatment.
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