Cell Reports (Jan 2023)

Single-cell RNA sequencing identifies a population of human liver-type ILC1s

  • Benjamin Krämer,
  • Ansel P. Nalin,
  • Feiyang Ma,
  • Sarah Eickhoff,
  • Philipp Lutz,
  • Sonia Leonardelli,
  • Felix Goeser,
  • Claudia Finnemann,
  • Gudrun Hack,
  • Jan Raabe,
  • Michael ToVinh,
  • Sarah Ahmad,
  • Christoph Hoffmeister,
  • Kim M. Kaiser,
  • Steffen Manekeller,
  • Vittorio Branchi,
  • Tobias Bald,
  • Michael Hölzel,
  • Robert Hüneburg,
  • Hans Dieter Nischalke,
  • Alexander Semaan,
  • Bettina Langhans,
  • Dominik J. Kaczmarek,
  • Brooke Benner,
  • Matthew R. Lordo,
  • Jesse Kowalski,
  • Adam Gerhardt,
  • Jörg Timm,
  • Marieta Toma,
  • Raphael Mohr,
  • Andreas Türler,
  • Arthur Charpentier,
  • Tobias van Bremen,
  • Georg Feldmann,
  • Arne Sattler,
  • Katja Kotsch,
  • Ali T. Abdallah,
  • Christian P. Strassburg,
  • Ulrich Spengler,
  • William E. Carson, III,
  • Bethany L. Mundy-Bosse,
  • Matteo Pellegrini,
  • Timothy E. O’Sullivan,
  • Aharon G. Freud,
  • Jacob Nattermann

Journal volume & issue
Vol. 42, no. 1
p. 111937

Abstract

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Summary: Group 1 innate lymphoid cells (ILCs) comprise a heterogeneous family of cytotoxic natural killer (NK) cells and ILC1s. We identify a population of “liver-type” ILC1s with transcriptional, phenotypic, and functional features distinct from those of conventional and liver-resident NK cells as well as from other previously described human ILC1 subsets. LT-ILC1s are CD49a+CD94+CD200R1+, express the transcription factor T-BET, and do not express the activating receptor NKp80 or the transcription factor EOMES. Similar to NK cells, liver-type ILC1s produce IFN-γ, TNF-α, and GM-CSF; however, liver-type ILC1s also produce IL-2 and lack perforin and granzyme-B. Liver-type ILC1s are expanded in cirrhotic liver tissues, and they can be produced from blood-derived ILC precursors in vitro in the presence of TGF-β1 and liver sinusoidal endothelial cells. Cells with similar signature and function can also be found in tonsil and intestinal tissues. Collectively, our study identifies and classifies a population of human cross-tissue ILC1s.

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