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Nat Cancer. 2020 Nov;1(11):1097-1112. doi: 10.1038/s43018-020-00121-4. Epub 2020 Oct 26.

Multimodal Mapping of the Tumor and Peripheral Blood Immune Landscape in Human Pancreatic Cancer.

Nature cancer

Nina G Steele, Eileen S Carpenter, Samantha B Kemp, Veerin Sirihorachai, Stephanie The, Lawrence Delrosario, Jenny Lazarus, El-Ad David Amir, Valerie Gunchick, Carlos Espinoza, Samantha Bell, Lindsey Harris, Fatima Lima, Valerie Irizarry-Negron, Daniel Paglia, Justin Macchia, Angel Ka Yan Chu, Heather Schofield, Erik-Jan Wamsteker, Richard Kwon, Allison Schulman, Anoop Prabhu, Ryan Law, Arjun Sondhi, Jessica Yu, Arpan Patel, Katelyn Donahue, Hari Nathan, Clifford Cho, Michelle A Anderson, Vaibhav Sahai, Costas A Lyssiotis, Weiping Zou, Benjamin L Allen, Arvind Rao, Howard C Crawford, Filip Bednar, Timothy L Frankel, Marina Pasca di Magliano

Affiliations

  1. Department of Cell and Developmental Biology, University of Michigan, Ann Arbor, MI 48109, USA.
  2. Department of Internal Medicine, Division of Gastroenterology, University of Michigan, Ann Arbor MI 48109, USA.
  3. Molecular and Cellular Pathology Graduate Program, University of Michigan, Ann Arbor, MI 48109, USA.
  4. Cancer Biology Program, University of Michigan, Ann Arbor, MI 48109, USA.
  5. Department of Computational Medicine and Bioinformatics, University of Michigan, Ann Arbor, MI 48109, USA.
  6. Department of Surgery, University of Michigan, Ann Arbor, MI 48109, USA.
  7. Astrolabe Diagnostics, Inc., Fort Lee, NJ, 07024, USA.
  8. Department of Internal Medicine, Division of Hematology and Oncology, University of Michigan, Ann Arbor, MI 48109, USA.
  9. Department of Molecular and Integrative Physiology, University of Michigan, Ann Arbor, MI 48109, USA.
  10. Michigan Institute of Data Science (MIDAS), University of Michigan, Ann Arbor, MI 48109, USA.
  11. Department of Radiation Oncology, University of Michigan, Ann Arbor, MI 48109, USA.

PMID: 34296197 PMCID: PMC8294470 DOI: 10.1038/s43018-020-00121-4

Abstract

Pancreatic ductal adenocarcinoma (PDA) is characterized by an immune-suppressive tumor microenvironment that renders it largely refractory to immunotherapy. We implemented a multimodal analysis approach to elucidate the immune landscape in PDA. Using a combination of CyTOF, single-cell RNA sequencing, and multiplex immunohistochemistry on patient tumors, matched blood, and non-malignant samples, we uncovered a complex network of immune-suppressive cellular interactions. These experiments revealed heterogeneous expression of immune checkpoint receptors in individual patient's T cells and increased markers of CD8

Keywords: CD8+ T cells; Single-cell RNA sequencing; TIGIT; immune checkpoints; pancreatic cancer; tumor immunology

Conflict of interest statement

Competing interests: The authors have declared that no conflict of interest exists.

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