PMID- 33237393 OWN - NLM STAT- MEDLINE DCOM- 20211005 LR - 20211126 IS - 1995-820X (Electronic) IS - 1674-0769 (Print) IS - 1995-820X (Linking) VI - 36 IP - 3 DP - 2021 Jun TI - Tumor Necrosis Factor alpha Reduces SNAP29 Dependent Autolysosome Formation to Increase Prion Protein Level and Promote Tumor Cell Migration. PG - 458-475 LID - 10.1007/s12250-020-00320-4 [doi] AB - Tumor Necrosis Factor alpha (TNFalpha) is best known as a mediator of inflammation and immunity, and also plays important roles in tumor biology. However, the role of TNFalpha in tumor biology is complex and not completely understood. In a human melanoma cell line, M2, and a lung carcinoma cell line, A549, TNFalpha up-regulates prion protein (PrP) level, and promotes tumor cell migration in a PrP dependent manner. Silencing PRNP abrogates TNFalpha induced tumor cell migration; this phenotype is reversed when PRNP is re-introduced. Treatment with TNFalpha activates nuclear factor kappa B (NF-kappaB) signaling, which then mitigates autophagy by reducing the expression of Forkhead Box P3 (FOXP3). Down regulation of FOXP3 reduces the transcription of synaptosome associated protein 29 (SNAP29), which is essential in the fusion of autophagosome and lysosome creating autolysosome. FOXP3 being a bona fide transcription factor for SNAP29 is confirmed in a promoter binding assay. Accordingly, silencing SNAP29 in these cell lines also up-regulates PrP, and promotes tumor cell migration without TNFalpha treatment. But, when SNAP29 or FOXP3 is silenced in these cells, they are no longer respond to TNFalpha. Thus, a reduction in autophagy is the underlying mechanism by which expression of PrP is up-regulated, and tumor cell migration is enhanced upon TNFalpha treatment. Disrupting the TNFalpha-NF-kappaB-FOXP3-SNAP29 signaling axis may provide a therapeutic approach to mitigate tumor cell migration. FAU - Li, Huan AU - Li H AD - Wuhan Institute of Virology, Chinese Academy of Sciences, Wuhan, 430071, China. AD - University of Chinese Academy of Sciences, Beijing, 100000, China. AD - Affiliated Cancer Hospital and Institute of Guangzhou Medical University, State Key Laboratory of Respiratory Disease, Guangzhou, 510095, China. FAU - Wang, Ren AU - Wang R AD - Affiliated Cancer Hospital and Institute of Guangzhou Medical University, State Key Laboratory of Respiratory Disease, Guangzhou, 510095, China. FAU - Yu, Ze AU - Yu Z AD - Affiliated Cancer Hospital and Institute of Guangzhou Medical University, State Key Laboratory of Respiratory Disease, Guangzhou, 510095, China. FAU - Shi, Run AU - Shi R AD - Affiliated Cancer Hospital and Institute of Guangzhou Medical University, State Key Laboratory of Respiratory Disease, Guangzhou, 510095, China. FAU - Zhang, Jie AU - Zhang J AD - Department of Stomatology, First Affiliated Hospital, School of Medicine, Shihezi University, Shihezi, 832008, China. FAU - Gao, Shanshan AU - Gao S AD - Wuhan Institute of Virology, Chinese Academy of Sciences, Wuhan, 430071, China. FAU - Shao, Ming AU - Shao M AD - Wuhan Institute of Virology, Chinese Academy of Sciences, Wuhan, 430071, China. FAU - Cui, Shuzhong AU - Cui S AD - Affiliated Cancer Hospital and Institute of Guangzhou Medical University, State Key Laboratory of Respiratory Disease, Guangzhou, 510095, China. AD - Abdominal Surgery, Affiliated Cancer Hospital and Institute of Guangzhou Medical University, Guangzhou, 510095, China. FAU - Gao, Zhenxing AU - Gao Z AD - Affiliated Cancer Hospital and Institute of Guangzhou Medical University, State Key Laboratory of Respiratory Disease, Guangzhou, 510095, China. FAU - Xu, Jiang AU - Xu J AD - Department of Stomatology, First Affiliated Hospital, School of Medicine, Shihezi University, Shihezi, 832008, China. FAU - Sy, Man-Sun AU - Sy MS AD - Department of Pathology, School of Medicine, Case Western Reserve University, Cleveland, OH, 44106, USA. FAU - Li, Chaoyang AU - Li C AUID- ORCID: 0000-0003-3582-4141 AD - Wuhan Institute of Virology, Chinese Academy of Sciences, Wuhan, 430071, China. chaoyangli@gzhmu.edu.cn. AD - Affiliated Cancer Hospital and Institute of Guangzhou Medical University, State Key Laboratory of Respiratory Disease, Guangzhou, 510095, China. chaoyangli@gzhmu.edu.cn. LA - eng PT - Journal Article DEP - 20201125 PL - Netherlands TA - Virol Sin JT - Virologica Sinica JID - 101514185 RN - 0 (NF-kappa B) RN - 0 (Prion Proteins) RN - 0 (Prions) RN - 0 (Qb-SNARE Proteins) RN - 0 (Qc-SNARE Proteins) RN - 0 (Snap29 protein, mouse) RN - 0 (Tumor Necrosis Factor-alpha) SB - IM MH - Animals MH - Cell Movement MH - Lysosomes MH - Mice MH - NF-kappa B MH - Prion Proteins/genetics MH - *Prions MH - Qb-SNARE Proteins MH - Qc-SNARE Proteins MH - *Tumor Necrosis Factor-alpha PMC - PMC8257879 OTO - NOTNLM OT - Autophagy OT - Forkhead box P3 (FOXP3) OT - Nuclear factor kappa B (NF-kappaB) OT - Prion protein OT - Synaptosome associated protein 29 (SNAP29) OT - Tumor necrosis factor alpha (TNFalpha) COIS- The authors declare that they have no conflicts of interest with the contents of this article. EDAT- 2020/11/26 06:00 MHDA- 2021/10/06 06:00 PMCR- 2021/11/25 CRDT- 2020/11/25 12:17 PHST- 2020/08/12 00:00 [received] PHST- 2020/10/10 00:00 [accepted] PHST- 2020/11/26 06:00 [pubmed] PHST- 2021/10/06 06:00 [medline] PHST- 2020/11/25 12:17 [entrez] PHST- 2021/11/25 00:00 [pmc-release] AID - 10.1007/s12250-020-00320-4 [pii] AID - 320 [pii] AID - 10.1007/s12250-020-00320-4 [doi] PST - ppublish SO - Virol Sin. 2021 Jun;36(3):458-475. doi: 10.1007/s12250-020-00320-4. Epub 2020 Nov 25.