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Zaragoza JZ, Klap K, Heidstra R, Zhou W, Scheres B. The dual role of the RETINOBLASTOMA-RELATED protein in the DNA damage response is coordinated by the interaction with LXCXE-containing proteins. THE PLANT JOURNAL : FOR CELL AND MOLECULAR BIOLOGY 2024; 118:1194-1206. [PMID: 38321589 DOI: 10.1111/tpj.16665] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/08/2022] [Revised: 01/10/2024] [Accepted: 01/18/2024] [Indexed: 02/08/2024]
Abstract
Living organisms possess mechanisms to safeguard genome integrity. To avoid spreading mutations, DNA lesions are detected and cell division is temporarily arrested to allow repair mechanisms. Afterward, cells either resume division or respond to unsuccessful repair by undergoing programmed cell death (PCD). How the success rate of DNA repair connects to later cell fate decisions remains incompletely known, particularly in plants. The Arabidopsis thaliana RETINOBLASTOMA-RELATED1 (RBR) protein and its partner E2FA, play both structural and transcriptional functions in the DNA damage response (DDR). Here we provide evidence that distinct RBR protein interactions with LXCXE motif-containing proteins guide these processes. Using the N849F substitution in the RBR B-pocket domain, which specifically disrupts binding to the LXCXE motif, we show that these interactions are dispensable in unchallenging conditions. However, N849F substitution abolishes RBR nuclear foci and promotes PCD and growth arrest upon genotoxic stress. NAC044, which promotes growth arrest and PCD, accumulates after the initial recruitment of RBR to foci and can bind non-focalized RBR through the LXCXE motif in a phosphorylation-independent manner, allowing interaction at different cell cycle phases. Disrupting NAC044-RBR interaction impairs PCD, but their genetic interaction points to opposite independent roles in the regulation of PCD. The LXCXE-binding dependency of the roles of RBR in the DDR suggests a coordinating mechanism to translate DNA repair success to cell survival. We propose that RBR and NAC044 act in two distinct DDR pathways, but interact to integrate input from both DDR pathways to decide upon an irreversible cell fate decision.
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Affiliation(s)
- Jorge Zamora Zaragoza
- Laboratory of Molecular Biology, Department of Plant Sciences, Wageningen University and Research, 6708 PB, Wageningen, The Netherlands
- Department of Biotechnology, Rijk Zwaan Breeding B.V., Eerste Kruisweg 9, 4793 RS, Fijnaart, The Netherlands
| | - Katinka Klap
- Laboratory of Molecular Biology, Department of Plant Sciences, Wageningen University and Research, 6708 PB, Wageningen, The Netherlands
| | - Renze Heidstra
- Laboratory of Molecular Biology, Department of Plant Sciences, Wageningen University and Research, 6708 PB, Wageningen, The Netherlands
| | - Wenkun Zhou
- Laboratory of Molecular Biology, Department of Plant Sciences, Wageningen University and Research, 6708 PB, Wageningen, The Netherlands
- State Key Laboratory of Plant Physiology and Biochemistry, College of Biological Sciences, China Agricultural University, Beijing, 100193, China
| | - Ben Scheres
- Laboratory of Molecular Biology, Department of Plant Sciences, Wageningen University and Research, 6708 PB, Wageningen, The Netherlands
- Department of Biotechnology, Rijk Zwaan Breeding B.V., Eerste Kruisweg 9, 4793 RS, Fijnaart, The Netherlands
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Shi SW, Li B, Dong Y, Ge Y, Qu X, Lu LG, Yuan YH, Li LJ, Li Y. In Vitro and Clinical Studies of Gene Therapy with Recombinant Human Adenovirus-p53 Injection for Malignant Melanoma. HUM GENE THER CL DEV 2019; 30:7-18. [PMID: 30618300 DOI: 10.1089/humc.2018.112] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023] Open
Abstract
Malignant melanoma is an aggressive tumor with high fatality rates and poor prognosis, mainly due to the lack of efficient treatment methods. The present study investigated the potential antitumor effects of recombinant adenovirus p53 (rAd-p53) on human malignant melanoma. The optimal viral titer on a human malignant melanoma (A-375) cell line was determined for the rAd-p53 treatment. The invasive abilities, apoptosis, variations in the cell cycle, and molecular expression levels of A-375 cells were detected after infection by rAd-p53. A tumor growth curve and hematoxylin and eosin staining were carried out for experiments in nude mice. Twenty-one patients with malignant melanoma were evaluated, including 12 cases without gene therapy and nine cases with rAd-p53 gene therapy. The overall survival rate and the median survival time were analyzed between the two groups of patients. When the multiplicity of infection was 100, the cells showed the best transfection efficiency. The invasive ability, apoptosis, cycle changes of the cells, and the expression of the p53, p21, and Bax genes and proteins were significantly changed in the experimental group. In nude mice, the tumor growth curve and the tumor size in the experimental group were significantly smaller than those of the control group. Hematoxylin and eosin staining revealed tumor metastasis in the blank group and the control group but not in the experimental group. Between the two groups of patients, the median survival of the gene therapy group (38 months) was greater than that of the group without gene therapy (27 months). In this study, high expression of the p53 gene could regulate the gene expression and reduce the invasive and metastatic abilities of the tumor cells. Furthermore, rAd-p53 effectively improved the survival of patients with malignant melanoma. Therefore, rAd-p53 may be a potential treatment method for human malignant melanoma.
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Affiliation(s)
- Shan-Wei Shi
- 1 State Key Laboratory of Oral Diseases and National Clinical Research Center for Oral Diseases and Department of Head and Neck Oncology, West China Hospital of Stomatology, Sichuan University, Chengdu, P.R. China.,2 Guangdong Provincial Key Laboratory of Stomatology, Guanghua School of Stomatology, Hospital of Stomatology, Institute of Stomatological Research, Sun Yat-sen University, Guangzhou, Guangdong, P.R. China
| | - Bo Li
- 1 State Key Laboratory of Oral Diseases and National Clinical Research Center for Oral Diseases and Department of Head and Neck Oncology, West China Hospital of Stomatology, Sichuan University, Chengdu, P.R. China
| | - Yang Dong
- 1 State Key Laboratory of Oral Diseases and National Clinical Research Center for Oral Diseases and Department of Head and Neck Oncology, West China Hospital of Stomatology, Sichuan University, Chengdu, P.R. China
| | - Yang Ge
- 1 State Key Laboratory of Oral Diseases and National Clinical Research Center for Oral Diseases and Department of Head and Neck Oncology, West China Hospital of Stomatology, Sichuan University, Chengdu, P.R. China
| | - Xing Qu
- 1 State Key Laboratory of Oral Diseases and National Clinical Research Center for Oral Diseases and Department of Head and Neck Oncology, West China Hospital of Stomatology, Sichuan University, Chengdu, P.R. China
| | - Li-Guang Lu
- 1 State Key Laboratory of Oral Diseases and National Clinical Research Center for Oral Diseases and Department of Head and Neck Oncology, West China Hospital of Stomatology, Sichuan University, Chengdu, P.R. China
| | - Yi-Hang Yuan
- 1 State Key Laboratory of Oral Diseases and National Clinical Research Center for Oral Diseases and Department of Head and Neck Oncology, West China Hospital of Stomatology, Sichuan University, Chengdu, P.R. China
| | - Long-Jiang Li
- 1 State Key Laboratory of Oral Diseases and National Clinical Research Center for Oral Diseases and Department of Head and Neck Oncology, West China Hospital of Stomatology, Sichuan University, Chengdu, P.R. China
| | - Yi Li
- 1 State Key Laboratory of Oral Diseases and National Clinical Research Center for Oral Diseases and Department of Head and Neck Oncology, West China Hospital of Stomatology, Sichuan University, Chengdu, P.R. China
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Ouyang Q, Chen G, Zhou J, Li L, Dong Z, Yang R, Xu L, Cui H, Xu M, Yi L. Neurotensin signaling stimulates glioblastoma cell proliferation by upregulating c-Myc and inhibiting miR-29b-1 and miR-129-3p. Neuro Oncol 2015; 18:216-26. [PMID: 26180082 DOI: 10.1093/neuonc/nov114] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2014] [Accepted: 05/30/2015] [Indexed: 12/11/2022] Open
Abstract
BACKGROUND Neurotensin (NTS) and its primary receptor NTSR1 are implicated in cancer progression. Aberrant expression of NTS/NTSR1 contributes to the proliferation of glioblastoma cells; however, the mechanism is not fully understood. METHODS Microarray and real-time PCR were performed to identify the NTS-regulated micro (mi)RNAs. The targets of the miRNAs were identified by luciferase assays and immunoblot analysis. The c-Myc binding sites in the miR-29b-1 and cyclin-dependent kinase (CDK)4 promoters were identified through chromatin immunoprecipitation assay. Cell proliferation was evaluated by Cell Counting Kit-8 assay and flow cytometry analysis. An orthotopic xenograft model demonstrated the role of NTS/NTSR1 and miRNAs in glioblastoma growth in vivo. RESULTS Pharmacological inhibition or small interfering NTSR1 treatment blocked glioblastoma cell cycle progression in the G1 phase with a concomitantly decreased expression of CDK6, CDK4, and c-Myc. Knockdown of NTSR1 increased the expression of miR-29b-1 and miR-129-3p, which were responsible for the decreased CDK6 expression. NTS/NTSR1 signaling activated the transcription factor c-Myc in U87 cells, leading to increased CDK4 expression and repressed miR-29b-1 expression. Knockdown of NTSR1 decreased the glioblastoma growth in vivo and significantly prolonged the survival time of the tumor-bearing mice, an effect that can be largely reversed by antagomir. CONCLUSIONS Our study showed a novel regulatory mechanism of NTS/NTSR1, an upstream signaling of miRNAs and c-Myc, in glioblastoma progression. The inhibition of the NTSR1 function or the upregulation of miR-29b-1 and miR-129-3p expression impaired glioma cell proliferation. These results suggested that the NTS/NTSR1/c-Myc/miRNA axis may be a potential therapeutic target for glioblastoma therapy.
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Affiliation(s)
- Qing Ouyang
- Department of Neurosurgery, Daping Hospital, Third Military Medical University, Chongqing, China (O.Q., Z.J., X.L., X.M., Y.L.); Biomedical Analysis Center, Third Military Medical University, Chongqing, China (C.G.); State Key Laboratory of Silkworm Genome Biology, Institute of Sericulture and Systems Biology, Southwest University, Chongqing, China (D.Z., Y.R., C.H.); State Key Laboratory of Trauma, Burns and Combined Injury, Department one, Institute of Surgery Research, Daping Hospital, Third Military Medical University, Chongqing, China (L.L.)
| | - Gang Chen
- Department of Neurosurgery, Daping Hospital, Third Military Medical University, Chongqing, China (O.Q., Z.J., X.L., X.M., Y.L.); Biomedical Analysis Center, Third Military Medical University, Chongqing, China (C.G.); State Key Laboratory of Silkworm Genome Biology, Institute of Sericulture and Systems Biology, Southwest University, Chongqing, China (D.Z., Y.R., C.H.); State Key Laboratory of Trauma, Burns and Combined Injury, Department one, Institute of Surgery Research, Daping Hospital, Third Military Medical University, Chongqing, China (L.L.)
| | - Ji Zhou
- Department of Neurosurgery, Daping Hospital, Third Military Medical University, Chongqing, China (O.Q., Z.J., X.L., X.M., Y.L.); Biomedical Analysis Center, Third Military Medical University, Chongqing, China (C.G.); State Key Laboratory of Silkworm Genome Biology, Institute of Sericulture and Systems Biology, Southwest University, Chongqing, China (D.Z., Y.R., C.H.); State Key Laboratory of Trauma, Burns and Combined Injury, Department one, Institute of Surgery Research, Daping Hospital, Third Military Medical University, Chongqing, China (L.L.)
| | - Lei Li
- Department of Neurosurgery, Daping Hospital, Third Military Medical University, Chongqing, China (O.Q., Z.J., X.L., X.M., Y.L.); Biomedical Analysis Center, Third Military Medical University, Chongqing, China (C.G.); State Key Laboratory of Silkworm Genome Biology, Institute of Sericulture and Systems Biology, Southwest University, Chongqing, China (D.Z., Y.R., C.H.); State Key Laboratory of Trauma, Burns and Combined Injury, Department one, Institute of Surgery Research, Daping Hospital, Third Military Medical University, Chongqing, China (L.L.)
| | - Zhen Dong
- Department of Neurosurgery, Daping Hospital, Third Military Medical University, Chongqing, China (O.Q., Z.J., X.L., X.M., Y.L.); Biomedical Analysis Center, Third Military Medical University, Chongqing, China (C.G.); State Key Laboratory of Silkworm Genome Biology, Institute of Sericulture and Systems Biology, Southwest University, Chongqing, China (D.Z., Y.R., C.H.); State Key Laboratory of Trauma, Burns and Combined Injury, Department one, Institute of Surgery Research, Daping Hospital, Third Military Medical University, Chongqing, China (L.L.)
| | - Rui Yang
- Department of Neurosurgery, Daping Hospital, Third Military Medical University, Chongqing, China (O.Q., Z.J., X.L., X.M., Y.L.); Biomedical Analysis Center, Third Military Medical University, Chongqing, China (C.G.); State Key Laboratory of Silkworm Genome Biology, Institute of Sericulture and Systems Biology, Southwest University, Chongqing, China (D.Z., Y.R., C.H.); State Key Laboratory of Trauma, Burns and Combined Injury, Department one, Institute of Surgery Research, Daping Hospital, Third Military Medical University, Chongqing, China (L.L.)
| | - Lunshan Xu
- Department of Neurosurgery, Daping Hospital, Third Military Medical University, Chongqing, China (O.Q., Z.J., X.L., X.M., Y.L.); Biomedical Analysis Center, Third Military Medical University, Chongqing, China (C.G.); State Key Laboratory of Silkworm Genome Biology, Institute of Sericulture and Systems Biology, Southwest University, Chongqing, China (D.Z., Y.R., C.H.); State Key Laboratory of Trauma, Burns and Combined Injury, Department one, Institute of Surgery Research, Daping Hospital, Third Military Medical University, Chongqing, China (L.L.)
| | - Hongjuan Cui
- Department of Neurosurgery, Daping Hospital, Third Military Medical University, Chongqing, China (O.Q., Z.J., X.L., X.M., Y.L.); Biomedical Analysis Center, Third Military Medical University, Chongqing, China (C.G.); State Key Laboratory of Silkworm Genome Biology, Institute of Sericulture and Systems Biology, Southwest University, Chongqing, China (D.Z., Y.R., C.H.); State Key Laboratory of Trauma, Burns and Combined Injury, Department one, Institute of Surgery Research, Daping Hospital, Third Military Medical University, Chongqing, China (L.L.)
| | - Minhui Xu
- Department of Neurosurgery, Daping Hospital, Third Military Medical University, Chongqing, China (O.Q., Z.J., X.L., X.M., Y.L.); Biomedical Analysis Center, Third Military Medical University, Chongqing, China (C.G.); State Key Laboratory of Silkworm Genome Biology, Institute of Sericulture and Systems Biology, Southwest University, Chongqing, China (D.Z., Y.R., C.H.); State Key Laboratory of Trauma, Burns and Combined Injury, Department one, Institute of Surgery Research, Daping Hospital, Third Military Medical University, Chongqing, China (L.L.)
| | - Liang Yi
- Department of Neurosurgery, Daping Hospital, Third Military Medical University, Chongqing, China (O.Q., Z.J., X.L., X.M., Y.L.); Biomedical Analysis Center, Third Military Medical University, Chongqing, China (C.G.); State Key Laboratory of Silkworm Genome Biology, Institute of Sericulture and Systems Biology, Southwest University, Chongqing, China (D.Z., Y.R., C.H.); State Key Laboratory of Trauma, Burns and Combined Injury, Department one, Institute of Surgery Research, Daping Hospital, Third Military Medical University, Chongqing, China (L.L.)
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