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He H, Cai T, Chen Q, Chen Z, Zhang B, Chen C, Wang Y, Liu Y, Wang Y, Luo Y, Huang S, Luo J, Guo X. TRIM44 Promotes Rabies Virus Replication by Autophagy-Dependent Mechanism. Int J Mol Sci 2024; 25:4616. [PMID: 38731834 PMCID: PMC11083291 DOI: 10.3390/ijms25094616] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2024] [Revised: 04/19/2024] [Accepted: 04/20/2024] [Indexed: 05/13/2024] Open
Abstract
Tripartite motif (TRIM) proteins are a multifunctional E3 ubiquitin ligase family that participates in various cellular processes. Recent studies have shown that TRIM proteins play important roles in regulating host-virus interactions through specific pathways, but their involvement in response to rabies virus (RABV) infection remains poorly understood. Here, we identified that several TRIM proteins are upregulated in mouse neuroblastoma cells (NA) after infection with the rabies virus using RNA-seq sequencing. Among them, TRIM44 was found to regulate RABV replication. This is supported by the observations that downregulation of TRIM44 inhibits RABV replication, while overexpression of TRIM44 promotes RABV replication. Mechanistically, TRIM44-induced RABV replication is brought about by activating autophagy, as inhibition of autophagy with 3-MA attenuates TRIM44-induced RABV replication. Additionally, we found that inhibition of autophagy with rapamycin reverses the TRIM44-knockdown-induced decrease in LC3B expression and autophagosome formation as well as RABV replication. The results suggest that TRIM44 promotes RABV replication by an autophagy-dependent mechanism. Our work identifies TRIM44 as a key host factor for RABV replication, and targeting TRIM44 expression may represent an effective therapeutic strategy.
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Affiliation(s)
- Hongling He
- College of Veterinary Medicine, South China Agricultural University, Guangzhou 510000, China; (H.H.); (T.C.); (Q.C.); (Z.C.); (B.Z.); (C.C.); (Y.W.); (Y.L.); (Y.W.); (Y.L.)
| | - Ting Cai
- College of Veterinary Medicine, South China Agricultural University, Guangzhou 510000, China; (H.H.); (T.C.); (Q.C.); (Z.C.); (B.Z.); (C.C.); (Y.W.); (Y.L.); (Y.W.); (Y.L.)
| | - Qiaozhu Chen
- College of Veterinary Medicine, South China Agricultural University, Guangzhou 510000, China; (H.H.); (T.C.); (Q.C.); (Z.C.); (B.Z.); (C.C.); (Y.W.); (Y.L.); (Y.W.); (Y.L.)
| | - Zilian Chen
- College of Veterinary Medicine, South China Agricultural University, Guangzhou 510000, China; (H.H.); (T.C.); (Q.C.); (Z.C.); (B.Z.); (C.C.); (Y.W.); (Y.L.); (Y.W.); (Y.L.)
| | - Boyue Zhang
- College of Veterinary Medicine, South China Agricultural University, Guangzhou 510000, China; (H.H.); (T.C.); (Q.C.); (Z.C.); (B.Z.); (C.C.); (Y.W.); (Y.L.); (Y.W.); (Y.L.)
| | - Changyi Chen
- College of Veterinary Medicine, South China Agricultural University, Guangzhou 510000, China; (H.H.); (T.C.); (Q.C.); (Z.C.); (B.Z.); (C.C.); (Y.W.); (Y.L.); (Y.W.); (Y.L.)
| | - Yueze Wang
- College of Veterinary Medicine, South China Agricultural University, Guangzhou 510000, China; (H.H.); (T.C.); (Q.C.); (Z.C.); (B.Z.); (C.C.); (Y.W.); (Y.L.); (Y.W.); (Y.L.)
| | - Yan Liu
- College of Veterinary Medicine, South China Agricultural University, Guangzhou 510000, China; (H.H.); (T.C.); (Q.C.); (Z.C.); (B.Z.); (C.C.); (Y.W.); (Y.L.); (Y.W.); (Y.L.)
| | - Yueming Wang
- College of Veterinary Medicine, South China Agricultural University, Guangzhou 510000, China; (H.H.); (T.C.); (Q.C.); (Z.C.); (B.Z.); (C.C.); (Y.W.); (Y.L.); (Y.W.); (Y.L.)
| | - Yongwen Luo
- College of Veterinary Medicine, South China Agricultural University, Guangzhou 510000, China; (H.H.); (T.C.); (Q.C.); (Z.C.); (B.Z.); (C.C.); (Y.W.); (Y.L.); (Y.W.); (Y.L.)
| | - Shile Huang
- Department of Biochemistry and Molecular Biology, Louisiana State University Health Sciences Center, 1501 Kings Highway, Shreveport, LA 71130-3932, USA;
- Department of Hematology and Oncology, Louisiana State University Health Sciences Center, 1501 Kings Highway, Shreveport, LA 71130-3932, USA
- Feist-Weiller Cancer Center, Louisiana State University Health Sciences Center, 1501 Kings Highway, Shreveport, LA 71130-3932, USA
| | - Jun Luo
- College of Veterinary Medicine, South China Agricultural University, Guangzhou 510000, China; (H.H.); (T.C.); (Q.C.); (Z.C.); (B.Z.); (C.C.); (Y.W.); (Y.L.); (Y.W.); (Y.L.)
| | - Xiaofeng Guo
- College of Veterinary Medicine, South China Agricultural University, Guangzhou 510000, China; (H.H.); (T.C.); (Q.C.); (Z.C.); (B.Z.); (C.C.); (Y.W.); (Y.L.); (Y.W.); (Y.L.)
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Zhang XY, Liu ZX, Zhang YF, Xu LX, Chen MK, Zhou YF, Yu J, Li XX, Zhang N. SEPT2 crotonylation promotes metastasis and recurrence in hepatocellular carcinoma and is associated with poor survival. Cell Biosci 2023; 13:63. [PMID: 36949517 PMCID: PMC10032003 DOI: 10.1186/s13578-023-00996-7] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2022] [Accepted: 02/22/2023] [Indexed: 03/24/2023] Open
Abstract
BACKGROUND Hepatocellular carcinoma (HCC) metastasis and recurrence lead to therapy failure, which are closely associated with the proteome. However, the role of post-translational modification (PTM) in HCC, especially for the recently discovered lysine crotonylation (Kcr), is elusive. RESULTS We investigated the correlation between crotonylation and HCC in 100 tumor tissues and performed stable isotope labeling by amino acids and liquid chromatography tandem mass spectrometry in HCC cells, and we found that crotonylation was positively correlated with HCC metastasis, and higher crotonylation in HCC cells facilitated cell invasiveness. Through bioinformatic analysis, we found that the crotonylated protein SEPT2 was significantly hypercrotonylated in highly invasive cells, while the decrotonylated mutation of SEPT2-K74 impaired SEPT2 GTPase activity and inhibited HCC metastasis in vitro and in vivo. Mechanistically, SIRT2 decrotonylated SEPT2, and P85α was found to be the downstream effector of SEPT2. Moreover, we identified that SEPT2-K74cr was correlated with poor prognosis and recurrence in HCC patients, thus indicating its clinical potential as an independent prognostic factor. CONCLUSIONS We revealed the role of nonhistone protein crotonylation in regulating HCC metastasis and invasion. Crotonylation facilitated cell invasion through the crotonylated SEPT2-K74-P85α-AKT pathway. High SEPT2-K74 crotonylation predicted poor prognosis and a high recurrence rate in HCC patients. Our study revealed a novel role of crotonylation in promoting HCC metastasis.
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Affiliation(s)
- Xin-Yue Zhang
- Department of Gastroenterology and Hepatology, The First Affiliated Hospital, Sun Yat-Sen University, Guangzhou, Guangdong Province, China
- Institute of Precision Medicine, The First Affiliated Hospital, Sun Yat-Sen University, Guangzhou, Guangdong Province, China
| | - Ze-Xian Liu
- State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Sun Yat-Sen University Cancer Center, Guangzhou, China
| | - Yi-Fan Zhang
- Institute of Precision Medicine, The First Affiliated Hospital, Sun Yat-Sen University, Guangzhou, Guangdong Province, China
- Department of Liver Surgery, The First Affiliated Hospital, Sun Yat-Sen University, Guangzhou, China
| | - Li-Xia Xu
- Institute of Precision Medicine, The First Affiliated Hospital, Sun Yat-Sen University, Guangzhou, Guangdong Province, China
- Department of Oncology, The First Affiliated Hospital, Sun Yat-Sen University, Guangzhou, China
| | - Meng-Ke Chen
- Institute of Precision Medicine, The First Affiliated Hospital, Sun Yat-Sen University, Guangzhou, Guangdong Province, China
| | - Yu-Feng Zhou
- State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Sun Yat-Sen University Cancer Center, Guangzhou, China
| | - Jun Yu
- Institute of Precision Medicine, The First Affiliated Hospital, Sun Yat-Sen University, Guangzhou, Guangdong Province, China
- Department of Medicine and Therapeutics, Institute of Digestive Disease, State Key Laboratory of Digestive Disease, Li Ka Shing Institute of Health Sciences, CUHK Shenzhen Research Institute, The Chinese University of Hong Kong, Hong Kong SAR, China
| | - Xiao-Xing Li
- Institute of Precision Medicine, The First Affiliated Hospital, Sun Yat-Sen University, Guangzhou, Guangdong Province, China.
- Department of Oncology, The First Affiliated Hospital, Sun Yat-Sen University, Guangzhou, China.
| | - Ning Zhang
- Department of Gastroenterology and Hepatology, The First Affiliated Hospital, Sun Yat-Sen University, Guangzhou, Guangdong Province, China.
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