PMID- 33797678 OWN - NLM STAT- MEDLINE DCOM- 20220221 LR - 20220221 IS - 1573-6814 (Electronic) IS - 1389-9333 (Linking) VI - 23 IP - 1 DP - 2022 Mar TI - Human laryngeal squamous cell carcinoma cell line release of endogenous anandamide and 2-arachidonoylglycerol, and their antiproliferative effect via exogenous supplementation: an in vitro study. PG - 93-100 LID - 10.1007/s10561-021-09917-9 [doi] AB - The level of the major endocannabinoids anandamide (AEA) and 2-arachidonoylglycerol (2-AG) are altered in several types of carcinomas, and are known to regulate tumor growth. Thusly, this study hypothesized that the HEp-2 human laryngeal squamous cell carcinoma (LSCC) cell line releases AEA and 2-AG, and aimed to determine if their exogenous supplementation has an anti-proliferative effect in vitro. In this in vitro observational study a commercial human LSCC cell line (HEp-2) was used to test for endogenous AEA and 2-AG release via liquid chromatography-tandem mass spectrometry (LC-MS/MS). The anti-proliferative effect of AEA and 2-AG supplementation was evaluated via WST-1 proliferation assay. It was observed that the HEp-2 LSCC cell line released AEA and 2-AG; the median quantity of AEA released was 15.69 ng mL(-1) (range: 14.55-15.95 ng mL(-1)) and the median quantity of 2-AG released was 2.72 ng (-1) (range: 2.67-2.74 ng mL(-1)). Additionally, both AEA and 2-AG exhibited an anti-proliferative effect. The anti-proliferative effect of 2-AG was stronger than that of AEA. These findings suggest that AEA might function via a CB1 receptor-independent pathway and that 2-AG might function via a CB2-dependent pathway. The present findings show that the HEp-2 LSCC cell line releases the major endocannabinoids AEA and 2-AG, and that their supplementation inhibits tumor cell proliferation in vitro. Thus, cannabinoid ligands might represent novel drug candidates for laryngeal cancers, although functional in vivo studies are required in order to validate their potency. CI - (c) 2021. The Author(s), under exclusive licence to Springer Nature B.V. FAU - Onay, Ovsen AU - Onay O AUID- ORCID: 0000-0002-8009-0311 AD - Department of ENT, Faculty of Medicine, Atilim University, 06830, Golbasi, Ankara, Turkey. ovsenonay8@gmail.com. FAU - Kose, Sevil AU - Kose S AUID- ORCID: 0000-0003-2188-9534 AD - Department of Medical Biology and Genetics, Faculty of Medicine, Atilim University, Ankara, Turkey. FAU - Suslu, Nilda AU - Suslu N AUID- ORCID: 0000-0001-9901-3044 AD - Department of ENT, Faculty of Medicine, Hacettepe University, Ankara, Turkey. FAU - Korkusuz, Petek AU - Korkusuz P AUID- ORCID: 0000-0002-7553-3915 AD - Department of Histology and Embryology, Faculty of Medicine, Hacettepe University, Ankara, Turkey. FAU - Nemutlu, Emirhan AU - Nemutlu E AUID- ORCID: 0000-0002-7337-6215 AD - Department of Analytical Chemistry, Faculty of Pharmacy, Hacettepe University, Ankara, Turkey. FAU - Aydin, Canset AU - Aydin C AUID- ORCID: 0000-0001-6288-636X AD - ENT Clinic, Medicana International Hospital, Ankara, Turkey. FAU - Hosal, Sefik AU - Hosal S AUID- ORCID: 0000-0002-1912-4287 AD - Department of ENT, Faculty of Medicine, Atilim University, 06830, Golbasi, Ankara, Turkey. LA - eng GR - Project ID: 376, Project code: 013 D10 101 004-376/Hacettepe Universitesi/ PT - Journal Article PT - Observational Study DEP - 20210402 PL - Netherlands TA - Cell Tissue Bank JT - Cell and tissue banking JID - 100965121 RN - 0 (Arachidonic Acids) RN - 0 (Endocannabinoids) RN - 0 (Glycerides) RN - 0 (Polyunsaturated Alkamides) RN - 8D239QDW64 (glyceryl 2-arachidonate) RN - UR5G69TJKH (anandamide) SB - IM MH - Arachidonic Acids MH - Cell Line MH - Chromatography, Liquid MH - Dietary Supplements MH - *Endocannabinoids/metabolism/pharmacology MH - Glycerides MH - *Head and Neck Neoplasms MH - Humans MH - Polyunsaturated Alkamides MH - Squamous Cell Carcinoma of Head and Neck MH - Tandem Mass Spectrometry OTO - NOTNLM OT - 2-Arachidonoylglycerol OT - Anandamide OT - Endocannabinoid OT - Laryngeal carcinoma EDAT- 2021/04/03 06:00 MHDA- 2022/02/22 06:00 CRDT- 2021/04/02 12:22 PHST- 2020/06/03 00:00 [received] PHST- 2021/03/22 00:00 [accepted] PHST- 2021/04/03 06:00 [pubmed] PHST- 2022/02/22 06:00 [medline] PHST- 2021/04/02 12:22 [entrez] AID - 10.1007/s10561-021-09917-9 [pii] AID - 10.1007/s10561-021-09917-9 [doi] PST - ppublish SO - Cell Tissue Bank. 2022 Mar;23(1):93-100. doi: 10.1007/s10561-021-09917-9. Epub 2021 Apr 2.