PMID- 35837195 OWN - NLM STAT- PubMed-not-MEDLINE LR - 20220716 IS - 2078-6891 (Print) IS - 2219-679X (Electronic) IS - 2078-6891 (Linking) VI - 13 IP - 3 DP - 2022 Jun TI - IL-1 receptor-associated kinase 1 participates in the modulation of the NLRP3 inflammasome by tumor-associated macrophages in hepatocellular carcinoma. PG - 1317-1329 LID - 10.21037/jgo-22-471 [doi] AB - BACKGROUND: Hepatocellular carcinomas (HCCs) occur frequently in the digestive system and are associated with high mortality. This current study examined the regulatory relationship between interleukin (IL)-1 receptor-associated kinase 1 (IRAK1), NLR family pyrin domain-containing 3 (NLRP3) inflammasomes, and tumor-associated macrophages (TAMs) in the growth and metastasis of HCC. METHODS: The expression of IRAK1 and NLRP3 was assessed in tissues and cells via quantitative real-time polymerase chain reaction (qRT-PCR) and Western blot analysis. Immunohistology was performed to detect the macrophage markers CD68, CD163, and CD168 in tumor tissues. Small interfering (si)RNA targeting IRAK1 (si-IRAK1) was designed to silence IRAK1 expression. Following si-IRAK1 transfection and/or co-culture with TAMs, HCC cell viability, proliferation, migration, and invasion, as well as the expression of NLRP3 and pro-inflammatory cytokines IL-1 beta, IL-18, and monocyte chemotactic protein 1 (MCP-1) were assessed. RESULTS: HCC tissues showed elevated expression of IRAK1 and NLRP3, as well as increased expression of the macrophage markers CD68, CD163, and CD168, compared to adjacent healthy tissues. Silencing of IRAK1 expression in HepG2 and Huh7 cells resulted in suppression of cell proliferation, migration, and invasion, and also reduced expression of NLRP3 and the pro-inflammatory cytokines IL-1beta, IL-18, and MCP-1. Moreover, TAMs promoted HepG2 and Huh7 cell proliferation, migration, and invasion, and elevated the expression of NLRP3, IL-1beta, IL-18, and MCP-1. Furthermore, IRAK1 silencing reversed the effects of TAMs on HepG2 and Huh7 cells. CONCLUSIONS: The expression of IRAK1 was associated with HCC growth and metastasis, as well as NLRP3 inflammasome activation. The ability of TAMs to promote HCC growth and metastasis may be activated by NLRP3 inflammasomes and regulated by IRAK1. CI - 2022 Journal of Gastrointestinal Oncology. All rights reserved. FAU - Chen, Wei AU - Chen W AD - Department of Oncology, People's Hospital of Huadu District, Guangzhou, China. FAU - Hu, Mingjuan AU - Hu M AD - Department of Pathology, People's Hospital of Huadu District, Guangzhou, China. FAU - Wei, Tao AU - Wei T AD - Department of Oncology, People's Hospital of Huadu District, Guangzhou, China. FAU - Liu, Ying AU - Liu Y AD - Department of Oncology, People's Hospital of Huadu District, Guangzhou, China. FAU - Tan, Tian AU - Tan T AD - Department of Oncology, People's Hospital of Huadu District, Guangzhou, China. FAU - Zhang, Chengfang AU - Zhang C AD - Department of Oncology, People's Hospital of Huadu District, Guangzhou, China. FAU - Weng, Jiaxuan AU - Weng J AD - Department of Oncology, People's Hospital of Huadu District, Guangzhou, China. LA - eng PT - Journal Article PL - China TA - J Gastrointest Oncol JT - Journal of gastrointestinal oncology JID - 101557751 PMC - PMC9274051 OTO - NOTNLM OT - Hepatocellular carcinoma (HCC) OT - IL-1 receptor-associated kinase 1 (IRAK1) OT - NLR family pyrin domain-containing 3 (NLRP3) OT - inflammation OT - tumor-associated macrophages (TAMs) COIS- Conflicts of Interest: All authors have completed the ICMJE uniform disclosure form (available at https://jgo.amegroups.com/article/view/10.21037/jgo-22-471/coif). The authors have no conflicts of interest to declare. EDAT- 2022/07/16 06:00 MHDA- 2022/07/16 06:01 PMCR- 2022/06/01 CRDT- 2022/07/15 02:36 PHST- 2022/04/14 00:00 [received] PHST- 2022/06/16 00:00 [accepted] PHST- 2022/07/15 02:36 [entrez] PHST- 2022/07/16 06:00 [pubmed] PHST- 2022/07/16 06:01 [medline] PHST- 2022/06/01 00:00 [pmc-release] AID - jgo-13-03-1317 [pii] AID - 10.21037/jgo-22-471 [doi] PST - ppublish SO - J Gastrointest Oncol. 2022 Jun;13(3):1317-1329. doi: 10.21037/jgo-22-471.