PMID- 34511272 OWN - NLM STAT- MEDLINE DCOM- 20220301 LR - 20220301 IS - 1879-1166 (Electronic) IS - 0198-8859 (Linking) VI - 82 IP - 12 DP - 2021 Dec TI - Pattern recognition receptor expression and maturation profile of dendritic cell subtypes in human tonsils and lymph nodes. PG - 976-981 LID - S0198-8859(21)00206-8 [pii] LID - 10.1016/j.humimm.2021.08.007 [doi] AB - Dendritic cells (DCs) with capacity of antigen cross-presentation are of key interest for immunotherapy against cancer as they can induce antigen-specific cytotoxic T lymphocyte (CTL) responses. This study describes frequencies of DC subtypes in human tonsils and lymph nodes, and phenotypic aspects that may be targeted by adjuvant measures. From human tonsils and neck lymph nodes, DCs were identified through flow cytometry, and subsets of plasmacytoid DCs (pDCs) and myeloid DCs (mDCs) were investigated. Maturity status was assessed and surface receptors with CTL-promoting potentials were studied. CD123(+) pDCs as well as CD1c(+), CD141(+), and CD1c(-)CD141(-) mDCs were detected in tonsils and lymph nodes. Both sites featured a similar presence of DC subsets, with CD123(+) pDC being dominant and CD141(+) mDCs least frequent. Based on CD80/CD86 expression, all DC subtypes featured a low degree of maturation. Expression of pattern recognition receptors (PRRs) CD206, CD207, DC-SIGN, TLR2, and TLR4, as well as the chemokine receptor XCR1, indicated DC subset-specific receptor profiles. We conclude that tonsils and lymph nodes share common features in terms of DC subset frequency and maturation as well as PRR and XCR1 expression pattern. Our work suggests that both sites may be considered for vaccine deposition in DC-mediated immunotherapy. CI - Copyright (c) 2021 The Authors. Published by Elsevier Inc. All rights reserved. FAU - Askmyr, David AU - Askmyr D AD - Department of ORL, Head & Neck Surgery, Skane University Hospital, Lund, Sweden; Department of Clinical Sciences, Lund University, Lund, Sweden. Electronic address: david.askmyr@med.lu.se. FAU - Abolhalaj, Milad AU - Abolhalaj M AD - Department of Immunotechnology, Lund University, Lund, Sweden. Electronic address: milad.abolhalaj@immun.lth.se. FAU - Gomez Jimenez, David AU - Gomez Jimenez D AD - Department of Immunotechnology, Lund University, Lund, Sweden. Electronic address: david.gomez_jimenez@immun.lth.se. FAU - Greiff, Lennart AU - Greiff L AD - Department of ORL, Head & Neck Surgery, Skane University Hospital, Lund, Sweden; Department of Clinical Sciences, Lund University, Lund, Sweden. Electronic address: lennart.greiff@skane.se. FAU - Lindstedt, Malin AU - Lindstedt M AD - Department of Immunotechnology, Lund University, Lund, Sweden. Electronic address: malin.lindstedt@immun.lth.se. FAU - Lundberg, Kristina AU - Lundberg K AD - Department of Immunotechnology, Lund University, Lund, Sweden. Electronic address: kristina.lundberg@immun.lth.se. LA - eng PT - Journal Article DEP - 20210909 PL - United States TA - Hum Immunol JT - Human immunology JID - 8010936 RN - 0 (B7-1 Antigen) RN - 0 (B7-2 Antigen) RN - 0 (CD40 Antigens) RN - 0 (CD80 protein, human) RN - 0 (CD86 protein, human) RN - 0 (Receptors, G-Protein-Coupled) RN - 0 (Receptors, Pattern Recognition) RN - 0 (XCR1 protein, human) SB - IM MH - Adolescent MH - Adult MH - Aged MH - Aged, 80 and over MH - B7-1 Antigen/metabolism MH - B7-2 Antigen/metabolism MH - CD40 Antigens/metabolism MH - Dendritic Cells/cytology/*metabolism MH - Female MH - Humans MH - Lymph Nodes/*cytology MH - Male MH - Middle Aged MH - Palatine Tonsil/*cytology MH - Receptors, G-Protein-Coupled/metabolism MH - Receptors, Pattern Recognition/*metabolism MH - Young Adult OTO - NOTNLM OT - Cancer OT - Dendritic cell OT - Immunotherapy OT - PRR OT - Vaccination COIS- Declaration of Competing Interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper. EDAT- 2021/09/14 06:00 MHDA- 2022/03/03 06:00 CRDT- 2021/09/13 05:48 PHST- 2021/03/18 00:00 [received] PHST- 2021/07/18 00:00 [revised] PHST- 2021/08/10 00:00 [accepted] PHST- 2021/09/14 06:00 [pubmed] PHST- 2022/03/03 06:00 [medline] PHST- 2021/09/13 05:48 [entrez] AID - S0198-8859(21)00206-8 [pii] AID - 10.1016/j.humimm.2021.08.007 [doi] PST - ppublish SO - Hum Immunol. 2021 Dec;82(12):976-981. doi: 10.1016/j.humimm.2021.08.007. Epub 2021 Sep 9.