PMID- 36409583 OWN - NLM STAT- MEDLINE DCOM- 20230315 LR - 20230527 IS - 1460-2377 (Electronic) IS - 0953-8178 (Print) IS - 0953-8178 (Linking) VI - 35 IP - 3 DP - 2023 Mar 14 TI - The thin line between conventional dendritic cells (cDCs) and group 3 innate lymphoid cells (ILC3s) in the gut. PG - 107-121 LID - 10.1093/intimm/dxac054 [doi] AB - Dendritic cells (DCs) express major histocompatibility complex class II (MHC-II) and are best known for proficiently presenting antigens to T cells, thereby eliciting specific adaptive T cell responses. Moreover, conventional DCs (cDCs) are specifically adept at handling intestinal antigens. Relatively recent discoveries and investigations have proven the existence of a new group of innate lymphocytes that reside in tissues like the intestine. They lack specific antigen receptors and can express MHC-II. These group 3 innate lymphoid cells (ILC3s) comprise a subset of heterogeneous innate lymphocytes that mirror the phenotype and functions of T-helper cells and act in the first line of defense. Considering that ILC3s are crucial for maintaining homeostasis of the intestinal mucosa and are found in niches alongside DCs, we herein describe the roles played by cDCs and ILC3s in the gut, highlighting the most recent studies. We discuss how these cells are alike and differ, constantly pointing out the thin, blurry line that separates cDCs and ILC3s. CI - Published by Oxford University Press on behalf of The Japanese Society for Immunology 2022. FAU - Ulezko Antonova, Alina AU - Ulezko Antonova A AD - Department of Pathology and Immunology, Washington University School of Medicine, Saint Louis, MO 63108, USA. FAU - Fachi, Jose Luis AU - Fachi JL AUID- ORCID: 0000-0002-1035-5193 AD - Department of Pathology and Immunology, Washington University School of Medicine, Saint Louis, MO 63108, USA. FAU - Gilfillan, Susan AU - Gilfillan S AD - Department of Pathology and Immunology, Washington University School of Medicine, Saint Louis, MO 63108, USA. FAU - Colonna, Marco AU - Colonna M AD - Department of Pathology and Immunology, Washington University School of Medicine, Saint Louis, MO 63108, USA. LA - eng GR - U01 AI095542/AI/NIAID NIH HHS/United States PT - Journal Article PT - Research Support, N.I.H., Extramural PT - Research Support, Non-U.S. Gov't PL - England TA - Int Immunol JT - International immunology JID - 8916182 RN - 0 (Histocompatibility Antigens Class II) SB - IM MH - *Lymphocytes MH - *Immunity, Innate MH - Dendritic Cells MH - Histocompatibility Antigens Class II MH - Intestinal Mucosa PMC - PMC10210749 OTO - NOTNLM OT - antigen presentation OT - colitis OT - microbiota EDAT- 2022/11/22 06:00 MHDA- 2023/03/16 06:00 PMCR- 2022/11/21 CRDT- 2022/11/21 12:32 PHST- 2022/11/07 00:00 [received] PHST- 2022/11/19 00:00 [accepted] PHST- 2022/11/22 06:00 [pubmed] PHST- 2023/03/16 06:00 [medline] PHST- 2022/11/21 12:32 [entrez] PHST- 2022/11/21 00:00 [pmc-release] AID - 6835623 [pii] AID - dxac054 [pii] AID - 10.1093/intimm/dxac054 [doi] PST - ppublish SO - Int Immunol. 2023 Mar 14;35(3):107-121. doi: 10.1093/intimm/dxac054.