PMID- 38396770 OWN - NLM STAT- MEDLINE DCOM- 20240226 LR - 20240227 IS - 1422-0067 (Electronic) IS - 1422-0067 (Linking) VI - 25 IP - 4 DP - 2024 Feb 8 TI - Chemoradiotherapy and Lymph Node Metastasis Affect Dendritic Cell Infiltration and Maturation in Regional Lymph Nodes of Laryngeal Cancer. LID - 10.3390/ijms25042093 [doi] LID - 2093 AB - Dendritic cells (DCs) are the most specialized antigen-presenting cells, and lymph nodes (LNs) play an important role in the DC-mediated T-cell response. We evaluated the infiltration of CD1a-positive DCs (CD1a-DCs), i.e., immature DCs, and S100-positive dendritic cells (S100-DCs), a mixture of immature and mature DCs, in 73 cases of laryngeal cancer and its regional LNs. Among them, 31 patients underwent radiotherapy (RT) or chemoradiotherapy (CRT) prior to surgery. No significant difference was found for CD1a-DC infiltration in the primary tumors, metastatic LNs and non-metastatic LNs, while S100-DCs were significantly fewer in number in the primary tumors and metastatic LNs compared to non-metastatic LNs. The cases which showed a high infiltration of S100-DCs in the metastatic LNs appeared to show a favorable prognosis, although statistical significance was not reached. In the RT/CRT group, the infiltration of the CD1a-DCs and S100-DCs was less in the primary tumors and metastatic LNs compared to the treatment-naive group. Conversely, the RT/CRT group showed higher CD1a-DC and S100-DC numbers in the non-metastatic LNs compared to the treatment-naive group. Thus, DC maturation in metastatic LNs plays an important role in tumor immunity in laryngeal cancer, and the infiltration of DCs into the primary tumor and metastatic LNs is impaired by RT/CRT. FAU - Kawasaki, Kanako AU - Kawasaki K AD - Department of Pathology & Microbiology, Faculty of Medicine, Saga University, Saga 849-8501, Japan. AD - Department of Otolaryngology-Head & Neck Surgery, Faculty of Medicine, Saga University, Saga 849-8501, Japan. FAU - Kai, Keita AU - Kai K AUID- ORCID: 0000-0003-1553-2598 AD - Department of Pathology, Saga University Hospital, Saga 849-8501, Japan. FAU - Minesaki, Akimichi AU - Minesaki A AD - Department of Otolaryngology-Head & Neck Surgery, Faculty of Medicine, Saga University, Saga 849-8501, Japan. FAU - Maeda, Sachiko AU - Maeda S AD - Department of Pathology & Microbiology, Faculty of Medicine, Saga University, Saga 849-8501, Japan. FAU - Yamauchi, Moriyasu AU - Yamauchi M AUID- ORCID: 0000-0002-7719-4187 AD - Department of Otolaryngology-Head & Neck Surgery, Faculty of Medicine, Saga University, Saga 849-8501, Japan. FAU - Kuratomi, Yuichiro AU - Kuratomi Y AD - Department of Otolaryngology-Head & Neck Surgery, Faculty of Medicine, Saga University, Saga 849-8501, Japan. LA - eng GR - 22K16913/Japan Society for the Promotion of Science/ GR - JS20220057/Soda Toyoji Memorial Foundation/ PT - Journal Article DEP - 20240208 PL - Switzerland TA - Int J Mol Sci JT - International journal of molecular sciences JID - 101092791 SB - IM MH - Humans MH - *Laryngeal Neoplasms/therapy/pathology MH - Lymphatic Metastasis/pathology MH - Dendritic Cells MH - Lymph Nodes/pathology MH - Chemoradiotherapy PMC - PMC10888629 OTO - NOTNLM OT - CD1a OT - S100 OT - chemoradiotherapy OT - dendritic cell OT - lymph node COIS- The authors declare no conflicts of interest. EDAT- 2024/02/24 11:45 MHDA- 2024/02/26 06:43 PMCR- 2024/02/08 CRDT- 2024/02/24 01:03 PHST- 2024/01/17 00:00 [received] PHST- 2024/02/05 00:00 [revised] PHST- 2024/02/07 00:00 [accepted] PHST- 2024/02/26 06:43 [medline] PHST- 2024/02/24 11:45 [pubmed] PHST- 2024/02/24 01:03 [entrez] PHST- 2024/02/08 00:00 [pmc-release] AID - ijms25042093 [pii] AID - ijms-25-02093 [pii] AID - 10.3390/ijms25042093 [doi] PST - epublish SO - Int J Mol Sci. 2024 Feb 8;25(4):2093. doi: 10.3390/ijms25042093.