PMID- 33801021 OWN - NLM STAT- PubMed-not-MEDLINE LR - 20210413 IS - 2079-7737 (Print) IS - 2079-7737 (Electronic) IS - 2079-7737 (Linking) VI - 10 IP - 3 DP - 2021 Mar 21 TI - Equine Genital Squamous Cell Carcinoma Associated with EcPV2 Infection: RANKL Pathway Correlated to Inflammation and Wnt Signaling Activation. LID - 10.3390/biology10030244 [doi] LID - 244 AB - Equine genital squamous cell carcinomas (egSCCs) are among the most common equine tumors after sarcoids, severely impairing animal health and welfare. Equus caballus papillomavirus type 2 (EcPV2) infection is often related to these tumors. The aim of this study was to clarify the molecular mechanisms behind egSCCs associated with EcPV2 infection, investigating receptor activator of nuclear factor-kappa B ligand (RANKL) signaling in NF-kB pathway, together with the Wnt and IL17 signaling pathways. We analyzed the innate immune response through gene expression evaluation of key cytokines and transcription factors. Moreover, Ki67 index was assessed with immunohistochemistry. EcPV2-E6 DNA was checked, and viral presence was confirmed in 21 positive out to 23 cases (91%). Oncogene expression was confirmed in 14 cases (60.8%) for E6 and in 8 (34.7%) for E2. RANKL, nuclear factor kappa-light-chain-enhancer of activated B cells (NFKB)-p50, NFKBp65, interleukin (IL)-6, IL17, IL23p19, IL8, IL12p35, IL12p40, beta-catenin (BCATN1), FOS like 1 (FOSL1), and lymphoid enhancer binding factor 1 (LEF1) showed a significant upregulation in tumor samples compared to healthy tissues. Our results describe an inflammatory environment characterized by the activation of RANKL/RANK and IL17 with the relative downstream pathways, and a positive modulation of inflammatory cytokines genes such as IL6 and IL8. Moreover, the increase of BCATN1, FOSL1, and LEF1 gene expression suggests an activation of both canonical and non-canonical Wnt signaling pathway that could be critical for carcinogenesis and tumor progression. FAU - Mecocci, Samanta AU - Mecocci S AUID- ORCID: 0000-0003-2998-0412 AD - Department of Veterinary Medicine, University of Perugia, Perugia 06123, Italy. FAU - Porcellato, Ilaria AU - Porcellato I AUID- ORCID: 0000-0003-2882-6739 AD - Department of Veterinary Medicine, University of Perugia, Perugia 06123, Italy. FAU - Armando, Federico AU - Armando F AUID- ORCID: 0000-0002-2578-4409 AD - Department of Veterinary Science, University of Parma, Parma 43126, Italy. AD - Department of Pathology, University of Veterinary Medicine Hannover, Hannover 30559, Germany. FAU - Mechelli, Luca AU - Mechelli L AD - Department of Veterinary Medicine, University of Perugia, Perugia 06123, Italy. FAU - Brachelente, Chiara AU - Brachelente C AUID- ORCID: 0000-0002-4812-3216 AD - Department of Veterinary Medicine, University of Perugia, Perugia 06123, Italy. FAU - Pepe, Marco AU - Pepe M AD - Department of Veterinary Medicine, University of Perugia, Perugia 06123, Italy. AD - Centro di Ricerca sul Cavallo Sportivo, University of Perugia, Perugia 06123, Italy. FAU - Gialletti, Rodolfo AU - Gialletti R AD - Department of Veterinary Medicine, University of Perugia, Perugia 06123, Italy. AD - Centro di Ricerca sul Cavallo Sportivo, University of Perugia, Perugia 06123, Italy. FAU - Passeri, Benedetta AU - Passeri B AUID- ORCID: 0000-0003-4660-3336 AD - Department of Veterinary Science, University of Parma, Parma 43126, Italy. FAU - Modesto, Paola AU - Modesto P AUID- ORCID: 0000-0002-8865-2366 AD - National Reference Center of Veterinary and Comparative Oncology (CEROVEC), Genova 16132, Italy. FAU - Ghelardi, Alessandro AU - Ghelardi A AUID- ORCID: 0000-0002-3686-1481 AD - Azienda Usl Toscana Nord-Ovest, UOC Ostetricia e Ginecologia, Ospedale Apuane, Massa 54100, Italy. FAU - Cappelli, Katia AU - Cappelli K AUID- ORCID: 0000-0002-3141-771X AD - Department of Veterinary Medicine, University of Perugia, Perugia 06123, Italy. AD - Centro di Ricerca sul Cavallo Sportivo, University of Perugia, Perugia 06123, Italy. FAU - Razzuoli, Elisabetta AU - Razzuoli E AUID- ORCID: 0000-0002-6597-475X AD - National Reference Center of Veterinary and Comparative Oncology (CEROVEC), Genova 16132, Italy. LA - eng GR - IZS PLV 15/18 RC/Italian Ministry of Health/ PT - Journal Article DEP - 20210321 PL - Switzerland TA - Biology (Basel) JT - Biology JID - 101587988 PMC - PMC8003831 OTO - NOTNLM OT - E6 expression OT - EcPV2 OT - IL12 OT - IL17A OT - IL23 OT - RANKL pathway OT - Wnt pathway OT - equine OT - inflammation COIS- The authors declare no conflict of interest. EDAT- 2021/04/04 06:00 MHDA- 2021/04/04 06:01 PMCR- 2021/03/21 CRDT- 2021/04/03 01:07 PHST- 2021/02/20 00:00 [received] PHST- 2021/03/16 00:00 [revised] PHST- 2021/03/17 00:00 [accepted] PHST- 2021/04/03 01:07 [entrez] PHST- 2021/04/04 06:00 [pubmed] PHST- 2021/04/04 06:01 [medline] PHST- 2021/03/21 00:00 [pmc-release] AID - biology10030244 [pii] AID - biology-10-00244 [pii] AID - 10.3390/biology10030244 [doi] PST - epublish SO - Biology (Basel). 2021 Mar 21;10(3):244. doi: 10.3390/biology10030244.