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Yang X, Yu D, Gao F, Yang J, Chen Z, Liu J, Yang X, Li L, Zhang Y, Yan C. Integrative Analysis of Morphine-Induced Differential Circular RNAs and ceRNA Networks in the Medial Prefrontal Cortex. Mol Neurobiol 2024; 61:4602-4618. [PMID: 38109006 DOI: 10.1007/s12035-023-03859-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2023] [Accepted: 12/04/2023] [Indexed: 12/19/2023]
Abstract
Circular RNAs (circRNAs) are a novel type of non-coding RNAs. Despite the fact that the functional mechanisms of most circRNAs remain unknown, emerging evidence indicates that circRNAs could sponge microRNAs (miRNAs), bind to RNA binding proteins (RBP), and even be translated into protein. Recent research has demonstrated the crucial roles played by circRNAs in neuropsychiatric disorders. The medial prefrontal cortex (mPFC) is a crucial component of drug reward circuitry and exerts top-down control over cognitive functions. However, there is currently limited knowledge about the correlation between circRNAs and morphine-associated contextual memory in the mPFC. Here, we performed morphine-induced conditioned place preference (CPP) in mice and extracted mPFC tissue for RNA-sequencing. Our study represented the first attempt to identify differentially expressed circRNAs (DEcircRNAs) and mRNAs (DEmRNAs) in the mPFC after morphine-induced CPP. We identified 47 significantly up-regulated DEcircRNAs and 429 significantly up-regulated DEmRNAs, along with 74 significantly down-regulated DEcircRNAs and 391 significantly down-regulated DEmRNAs. Functional analysis revealed that both DEcircRNAs and DEmRNAs were closely associated with neuroplasticity. To further validate the DEcircRNAs, we conducted qRT-PCR, Sanger sequencing, and RNase R digestion assays. Additionally, using an integrated bioinformatics approach, we constructed ceRNA networks and identified critical circRNA/miRNA/mRNA axes that contributed to the development of morphine-associated contextual memory. In summary, our study provided novel insights into the role of circRNAs in drug-related memory, specifically from the perspective of ceRNAs.
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Affiliation(s)
- Xixi Yang
- College of Forensic Medicine, Xi'an Jiaotong University, Xi'an 710061, Shaanxi, China
- Key Laboratory of Forensic Medicine, National Health Commission, Xi'an 710061, Shaanxi, China
- Bio-Evidence Sciences Academy, Western China Science and Technology Innovation Harbor, Xi'an Jiaotong University, Xi'an 710100, Shaanxi, China
| | - Dongyu Yu
- College of Forensic Medicine, Xi'an Jiaotong University, Xi'an 710061, Shaanxi, China
- Key Laboratory of Forensic Medicine, National Health Commission, Xi'an 710061, Shaanxi, China
- Bio-Evidence Sciences Academy, Western China Science and Technology Innovation Harbor, Xi'an Jiaotong University, Xi'an 710100, Shaanxi, China
| | - Feifei Gao
- College of Forensic Medicine, Xi'an Jiaotong University, Xi'an 710061, Shaanxi, China
- Key Laboratory of Forensic Medicine, National Health Commission, Xi'an 710061, Shaanxi, China
- Bio-Evidence Sciences Academy, Western China Science and Technology Innovation Harbor, Xi'an Jiaotong University, Xi'an 710100, Shaanxi, China
| | - Jingsi Yang
- College of Forensic Medicine, Xi'an Jiaotong University, Xi'an 710061, Shaanxi, China
- Key Laboratory of Forensic Medicine, National Health Commission, Xi'an 710061, Shaanxi, China
- Bio-Evidence Sciences Academy, Western China Science and Technology Innovation Harbor, Xi'an Jiaotong University, Xi'an 710100, Shaanxi, China
| | - Zhennan Chen
- College of Forensic Medicine, Xi'an Jiaotong University, Xi'an 710061, Shaanxi, China
- Key Laboratory of Forensic Medicine, National Health Commission, Xi'an 710061, Shaanxi, China
- Bio-Evidence Sciences Academy, Western China Science and Technology Innovation Harbor, Xi'an Jiaotong University, Xi'an 710100, Shaanxi, China
| | - Junlin Liu
- College of Forensic Medicine, Xi'an Jiaotong University, Xi'an 710061, Shaanxi, China
- Key Laboratory of Forensic Medicine, National Health Commission, Xi'an 710061, Shaanxi, China
- Bio-Evidence Sciences Academy, Western China Science and Technology Innovation Harbor, Xi'an Jiaotong University, Xi'an 710100, Shaanxi, China
| | - Xiaoyu Yang
- College of Forensic Medicine, Xi'an Jiaotong University, Xi'an 710061, Shaanxi, China
- Key Laboratory of Forensic Medicine, National Health Commission, Xi'an 710061, Shaanxi, China
- Bio-Evidence Sciences Academy, Western China Science and Technology Innovation Harbor, Xi'an Jiaotong University, Xi'an 710100, Shaanxi, China
| | - Lanjiang Li
- College of Forensic Medicine, Xi'an Jiaotong University, Xi'an 710061, Shaanxi, China
- Key Laboratory of Forensic Medicine, National Health Commission, Xi'an 710061, Shaanxi, China
- Bio-Evidence Sciences Academy, Western China Science and Technology Innovation Harbor, Xi'an Jiaotong University, Xi'an 710100, Shaanxi, China
| | - Yuxiang Zhang
- College of Forensic Medicine, Xi'an Jiaotong University, Xi'an 710061, Shaanxi, China.
- Key Laboratory of Forensic Medicine, National Health Commission, Xi'an 710061, Shaanxi, China.
- Bio-Evidence Sciences Academy, Western China Science and Technology Innovation Harbor, Xi'an Jiaotong University, Xi'an 710100, Shaanxi, China.
| | - Chunxia Yan
- College of Forensic Medicine, Xi'an Jiaotong University, Xi'an 710061, Shaanxi, China.
- Key Laboratory of Forensic Medicine, National Health Commission, Xi'an 710061, Shaanxi, China.
- Bio-Evidence Sciences Academy, Western China Science and Technology Innovation Harbor, Xi'an Jiaotong University, Xi'an 710100, Shaanxi, China.
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Connors CT, Villaca CB, Anderson-Baucum EK, Rosario SR, Rutan CD, Childress PJ, Padgett LR, Robertson MA, Mastracci TL. A Translational Regulatory Mechanism Mediated by Hypusinated Eukaryotic Initiation Factor 5A Facilitates β-Cell Identity and Function. Diabetes 2024; 73:461-473. [PMID: 38055903 PMCID: PMC10882153 DOI: 10.2337/db23-0148] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/21/2023] [Accepted: 11/27/2023] [Indexed: 12/08/2023]
Abstract
As professional secretory cells, β-cells require adaptable mRNA translation to facilitate a rapid synthesis of proteins, including insulin, in response to changing metabolic cues. Specialized mRNA translation programs are essential drivers of cellular development and differentiation. However, in the pancreatic β-cell, the majority of factors identified to promote growth and development function primarily at the level of transcription. Therefore, despite its importance, the regulatory role of mRNA translation in the formation and maintenance of functional β-cells is not well defined. In this study, we have identified a translational regulatory mechanism mediated by the specialized mRNA translation factor eukaryotic initiation factor 5A (eIF5A), which facilitates the maintenance of β-cell identity and function. The mRNA translation function of eIF5A is only active when it is posttranslationally modified ("hypusinated") by the enzyme deoxyhypusine synthase (DHPS). We have discovered that the absence of β-cell DHPS in mice reduces the synthesis of proteins critical to β-cell identity and function at the stage of β-cell maturation, leading to a rapid and reproducible onset of diabetes. Therefore, our work has revealed a gatekeeper of specialized mRNA translation that permits the β-cell, a metabolically responsive secretory cell, to maintain the integrity of protein synthesis necessary during times of induced or increased demand. ARTICLE HIGHLIGHTS
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Affiliation(s)
- Craig T. Connors
- Department of Biology, Indiana University Indianapolis, Indianapolis, IN
| | | | | | - Spencer R. Rosario
- Department of Biostatistics and Bioinformatics, Roswell Park Comprehensive Cancer Center, Buffalo, NY
| | - Caleb D. Rutan
- Department of Biology, Indiana University Indianapolis, Indianapolis, IN
| | | | | | | | - Teresa L. Mastracci
- Department of Biology, Indiana University Indianapolis, Indianapolis, IN
- Department of Biochemistry and Molecular Biology, Indiana University School of Medicine, Indianapolis, IN
- Center for Diabetes and Metabolic Diseases, Indiana University School of Medicine, Indianapolis, IN
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3
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Wang Y, Jiang H, Fu L, Guan L, Yang J, Ren J, Liu F, Li X, Ma X, Li Y, Cai H. Prognostic value and immunological role of PD-L1 gene in pan-cancer. BMC Cancer 2024; 24:20. [PMID: 38166842 PMCID: PMC10763229 DOI: 10.1186/s12885-023-11267-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2023] [Accepted: 08/07/2023] [Indexed: 01/05/2024] Open
Abstract
OBJECTIVE PD-L1, a target of immune checkpoint blockade, has been proven to take the role of an oncogene in most human tumors. However, the role of PD-L1 in human pan-cancers has not yet been fully investigated. MATERIALS AND METHODS Pan-cancer analysis was conducted to analyze expression, genetic alterations, prognosis analysis, and immunological characteristics of PD-L1. Estimating the correlation between PD-L1 expression and survival involved using pooled odds ratios and hazard ratios with 95% CI. The Kaplan-Meier (K-M) technique, COX analysis, and receiver operating characteristic (ROC) curves were applied to the survival analysis. Additionally, we investigated the relationships between PD-L1 and microsatellite instability (MSI), tumor mutational burden (TMB), DNA methyltransferases (DNMTs), the associated genes of mismatch repair (MMR), and immune checkpoint biomarkers using Spearman's correlation analysis. Also, immunohistochemical analysis and qRT-PCR were employed in evaluating PD-L1's protein and mRNA expression in pan-caner. RESULTS PD-L1 showed abnormal mRNA and protein expression in a variety of cancers and predicted prognosis in cancer patients. Furthermore, across a variety of cancer types, the aberrant PD-L1 expression was connected to the MSI, MMR, TMB, drug sensitivity, and tumor immune microenvironment (TIME). Moreover, PD-L1 was significantly correlated with infiltrating levels of immune cells (T cell CD8 + , neutrophil, and so on). CONCLUSION Our study provides a better theoretical basis and guidance for the clinical treatment of PD-L1.
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Affiliation(s)
- Yongfeng Wang
- The First Clinical Medical College of Lanzhou University, Lanzhou, Gansu, 730000, China
- General Surgery Clinical Medical Center, Gansu Provincial Hospital, Lanzhou, Gansu, 730000, China
- Key Laboratory of Molecular Diagnostics and Precision Medicine for Surgical Oncology in Gansu Province, Gansu Provincial Hospital, Gansu, 730000, China
- NHC Key Laboratory of Diagnosis and Therapy of Gastrointestinal Tumor, Gansu Provincial Hospital, 204 Donggang West Road, Lanzhou, Gansu, 730000, China
| | - Hong Jiang
- School of Stomatology, Lanzhou University, Lanzhou, Gansu, 730000, China
| | - Liangyin Fu
- General Surgery Clinical Medical Center, Gansu Provincial Hospital, Lanzhou, Gansu, 730000, China
| | - Ling Guan
- School of Stomatology, Lanzhou University, Lanzhou, Gansu, 730000, China
| | - Jiaxin Yang
- School of Stomatology, Lanzhou University, Lanzhou, Gansu, 730000, China
| | - Jingyao Ren
- General Surgery Clinical Medical Center, Gansu Provincial Hospital, Lanzhou, Gansu, 730000, China
| | - Fangyu Liu
- The First Clinical Medical College of Lanzhou University, Lanzhou, Gansu, 730000, China
| | - Xiangyang Li
- The First Clinical Medical College of Lanzhou University, Lanzhou, Gansu, 730000, China
| | - Xuhui Ma
- General Surgery Clinical Medical Center, Gansu Provincial Hospital, Lanzhou, Gansu, 730000, China
| | - Yonghong Li
- NHC Key Laboratory of Diagnosis and Therapy of Gastrointestinal Tumor, Gansu Provincial Hospital, 204 Donggang West Road, Lanzhou, Gansu, 730000, China.
| | - Hui Cai
- The First Clinical Medical College of Lanzhou University, Lanzhou, Gansu, 730000, China.
- General Surgery Clinical Medical Center, Gansu Provincial Hospital, Lanzhou, Gansu, 730000, China.
- Key Laboratory of Molecular Diagnostics and Precision Medicine for Surgical Oncology in Gansu Province, Gansu Provincial Hospital, Gansu, 730000, China.
- NHC Key Laboratory of Diagnosis and Therapy of Gastrointestinal Tumor, Gansu Provincial Hospital, 204 Donggang West Road, Lanzhou, Gansu, 730000, China.
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Wei D, Niu B, Zhai B, Liu XB, Yao YL, Liang CC, Wang P. Expression profiles and function prediction of tRNA-derived fragments in glioma. BMC Cancer 2023; 23:1015. [PMID: 37864150 PMCID: PMC10588164 DOI: 10.1186/s12885-023-11532-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2023] [Accepted: 10/16/2023] [Indexed: 10/22/2023] Open
Abstract
BACKGROUND Glioblastoma (GBM) is the most aggressive malignant primary brain tumor. The transfer RNA-derived fragments (tRFs) are a new group of small noncoding RNAs, which are dysregulated in many cancers. Until now, the expression and function of tRFs in glioma remain unknown. METHODS The expression profiles of tRF subtypes were analyzed using the Cancer Genome Atlas (TCGA)-low-grade gliomas (LGG)/GBM dataset. The target genes of tRFs were subjected to Gene Ontology, Kyoto Encyclopedia and Gene set enrichment analysis of Genes and Genomes pathway enrichment analysis. The protein-protein interaction enrichment analysis was performed by STRING. QRT-PCR was performed to detect the expressions of tRFs in human glioma cell lines U87, U373, U251, and human astrocyte cell line SVG p12. Western blot assay was used to detect to the expression of S100A11. The interaction between tRF-19-R118LOJX and S100A11 mRNA 3'UTR was detected by dual-luciferase reporter assay. The effects of tRF-19-R118LOJX, tRF-19-6SM83OJX and S100A11 on the glioma cell proliferation, migration and in vitro vasculogenic mimicry formation ability were examined by CCK-8 proliferation assay, EdU assay, HoloMonitor cell migration assay and tube formation assay, respectively. RESULTS tRF-19-R118LOJX and tRF-19-6SM83OJX are the most differentially expressed tRFs between LGG and GBM groups. The functional enrichment analysis showed that the target genes of tRF-19-R118LOJX and tRF-19-6SM83OJX are enriched in regulating blood vessel development. The upregulated target genes are linked to adverse survival outcomes in glioma patients. tRF-19-R118LOJX and tRF-19-6SM83OJX were identified to suppress glioma cell proliferation, migration, and in vitro vasculogenic mimicry formation. The mechanism of tRF-19-R118LOJX might be related to its function as an RNA silencer by targeting the S100A11 mRNA 3'UTR. CONCLUSION tRFs would become novel diagnostic biomarkers and therapeutic targets of glioma, and the mechanism might be related to its post-transcriptionally regulation of gene expression by targeting mRNA 3'UTR.
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Affiliation(s)
- Deng Wei
- Department of Neurobiology, School of Life Sciences, China Medical University, Shenyang, 110122, China
- Key Laboratory of Neuro-oncology in Liaoning Province, Shenyang, China
| | - Ben Niu
- Department of Neurobiology, School of Life Sciences, China Medical University, Shenyang, 110122, China
- Key Laboratory of Neuro-oncology in Liaoning Province, Shenyang, China
| | - Bei Zhai
- Department of Neurobiology, School of Life Sciences, China Medical University, Shenyang, 110122, China
- Key Laboratory of Neuro-oncology in Liaoning Province, Shenyang, China
| | - Xiao-Bai Liu
- Key Laboratory of Neuro-oncology in Liaoning Province, Shenyang, China
- Department of Neurosurgery, Shengjing Hospital of China Medical University, Shenyang, 110004, China
| | - Yi-Long Yao
- Key Laboratory of Neuro-oncology in Liaoning Province, Shenyang, China
- Department of Neurosurgery, Shengjing Hospital of China Medical University, Shenyang, 110004, China
| | - Chan-Chan Liang
- Department of Neurobiology, School of Life Sciences, China Medical University, Shenyang, 110122, China
- Key Laboratory of Neuro-oncology in Liaoning Province, Shenyang, China
| | - Ping Wang
- Department of Neurobiology, School of Life Sciences, China Medical University, Shenyang, 110122, China.
- Key Laboratory of Neuro-oncology in Liaoning Province, Shenyang, China.
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Snyder K, Gorse K, Kochanek PM, Jackson TC. Neuronal RBM5 modulates cell signaling responses to traumatic and hypoxic-ischemic injury in a sex-dependent manner. Cell Death Discov 2023; 9:379. [PMID: 37848418 PMCID: PMC10582027 DOI: 10.1038/s41420-023-01677-7] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2023] [Revised: 09/22/2023] [Accepted: 10/03/2023] [Indexed: 10/19/2023] Open
Abstract
It is not clear if inhibiting the pro-death gene RNA binding motif 5 (RBM5) is neuroprotective in isolated primary neurons or if it regulates cell survival in a sex-dependent manner. Here we established sex-dichotomized primary cortical neuron cultures from transgenic mice harboring a floxed RBM5 gene-trap. Lentivirus-mediated expression of CRE was used to silence RBM5 expression. Male and female neurons were maintained in next-generation Neurobasal-Plus media and subjected to a mechanical stretch-injury (to model traumatic brain injury) or oxygen-glucose deprivation/OGD (to model ischemia). RBM5 KO did not affect 24 h post-injury survival as determined by lactate dehydrogenase (LDH) release, in either paradigm. In contrast, female KO neurons had increased spectrin breakdown products post-insult (in both models). Furthermore, in OGD, RBM5 KO in male neurons exacerbated injury-induced downregulation of pro-survival AKT activation (pAKT473) but conversely led to pAKT473 sparing in female neurons. Moreover, global proteomics identified 19 differentially expressed (DE) proteins in OGD-injured male neurons, and 102 DE proteins in injured female neurons. Two novel RBM5-regulated proteins (PIGQ and EST1C) were identified in injured male KO neurons, and 8 novel proteins identified in injured female KO neurons (S35A5, DHTK1, STX3, IF3M, RN167, K1C14, DYHS, and MED13). In summary, RBM5 inhibition does not modify neuronal survival in primary mouse neurons in 2 clinically relevant models of excitotoxic insult, but RBM5 does regulate intracellular responses to injury in a sex-dependent manner.
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Affiliation(s)
- Kara Snyder
- University of South Florida, Morsani College of Medicine, USF Health Heart Institute, MDD 0630, 560 Channelside Dr, Tampa, FL, 33602, USA
- University of South Florida, Morsani College of Medicine, Department of Molecular Pharmacology & Physiology, 12901 Bruce B Downs Blvd, Tampa, FL, 33612, USA
| | - Kiersten Gorse
- University of South Florida, Morsani College of Medicine, USF Health Heart Institute, MDD 0630, 560 Channelside Dr, Tampa, FL, 33602, USA
- University of South Florida, Morsani College of Medicine, Department of Molecular Pharmacology & Physiology, 12901 Bruce B Downs Blvd, Tampa, FL, 33612, USA
| | - Patrick M Kochanek
- Safar Center for Resuscitation Research, UPMC Children's Hospital of Pittsburgh, Rangos Research Center - 6th floor, Pittsburgh, PA, 15224, USA
| | - Travis C Jackson
- University of South Florida, Morsani College of Medicine, USF Health Heart Institute, MDD 0630, 560 Channelside Dr, Tampa, FL, 33602, USA.
- University of South Florida, Morsani College of Medicine, Department of Molecular Pharmacology & Physiology, 12901 Bruce B Downs Blvd, Tampa, FL, 33612, USA.
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Gao Y, Wang X, Zhao X, Zhu C, Li C, Li J, Wu X. Multiphase CT radiomics nomogram for preoperatively predicting the WHO/ISUP nuclear grade of small (< 4 cm) clear cell renal cell carcinoma. BMC Cancer 2023; 23:953. [PMID: 37814228 PMCID: PMC10561466 DOI: 10.1186/s12885-023-11454-5] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2023] [Accepted: 09/27/2023] [Indexed: 10/11/2023] Open
Abstract
BACKGROUND Small (< 4 cm) clear cell renal cell carcinoma (ccRCC) is the most common type of small renal cancer and its prognosis is poor. However, conventional radiological characteristics obtained by computed tomography (CT) are not sufficient to predict the nuclear grade of small ccRCC before surgery. METHODS A total of 113 patients with histologically confirmed ccRCC were randomly assigned to the training set (n = 67) and the testing set (n = 46). The baseline and CT imaging data of the patients were evaluated statistically to develop a clinical model. A radiomics model was created, and the radiomics score (Rad-score) was calculated by extracting radiomics features from the CT images. Then, a clinical radiomics nomogram was developed using multivariate logistic regression analysis by combining the Rad-score and critical clinical characteristics. The receiver operating characteristic (ROC) curve was used to evaluate the discrimination of small ccRCC in both the training and testing sets. RESULTS The radiomics model was constructed using six features obtained from the CT images. The shape and relative enhancement value of the nephrographic phase (REV of the NP) were found to be independent risk factors in the clinical model. The area under the curve (AUC) values for the training and testing sets for the clinical radiomics nomogram were 0.940 and 0.902, respectively. Decision curve analysis (DCA) revealed that the radiomics nomogram model was a better predictor, with the highest degree of coincidence. CONCLUSION The CT-based radiomics nomogram has the potential to be a noninvasive and preoperative method for predicting the WHO/ISUP grade of small ccRCC.
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Affiliation(s)
- Yankun Gao
- Department of Radiology, The First Affiliated Hospital of Anhui Medical University, Hefei, 230022, Anhui, China
| | - Xia Wang
- Department of Radiology, The First Affiliated Hospital of Anhui Medical University, Hefei, 230022, Anhui, China
| | - Xiaoying Zhao
- Department of Radiology, The First Affiliated Hospital of Anhui Medical University, Hefei, 230022, Anhui, China
| | - Chao Zhu
- Department of Radiology, The First Affiliated Hospital of Anhui Medical University, Hefei, 230022, Anhui, China
| | - Cuiping Li
- Department of Radiology, The First Affiliated Hospital of Anhui Medical University, Hefei, 230022, Anhui, China
| | - Jianying Li
- CT Research Center, GE Healthcare China, Shanghai, 210000, China
| | - Xingwang Wu
- Department of Radiology, The First Affiliated Hospital of Anhui Medical University, Hefei, 230022, Anhui, China.
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Xu Q, He L, Zhang S, Di X, Jiang H. Deubiquitinase OTUD3: a double-edged sword in immunity and disease. Front Cell Dev Biol 2023; 11:1237530. [PMID: 37829187 PMCID: PMC10566363 DOI: 10.3389/fcell.2023.1237530] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2023] [Accepted: 08/28/2023] [Indexed: 10/14/2023] Open
Abstract
Deubiquitination is an important form of post-translational modification that regulates protein homeostasis. Ovarian tumor domain-containing proteins (OTUDs) subfamily member OTUD3 was identified as a deubiquitinating enzyme involved in the regulation of various physiological processes such as immunity and inflammation. Disturbances in these physiological processes trigger diseases in humans and animals, such as cancer, neurodegenerative diseases, diabetes, mastitis, etc. OTUD3 is aberrantly expressed in tumors and is a double-edged sword, exerting tumor-promoting or anti-tumor effects in different types of tumors affecting cancer cell proliferation, metastasis, and metabolism. OTUD3 is regulated at the transcriptional level by a number of MicroRNAs, such as miR-520h, miR-32, and miR101-3p. In addition, OTUD3 is regulated by a number of post-translational modifications, such as acetylation and ubiquitination. Therefore, understanding the regulatory mechanisms of OTUD3 expression can help provide insight into its function in human immunity and disease, offering the possibility of its use as a therapeutic target to diagnose or treat disease.
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Affiliation(s)
- Qiao Xu
- Department of Cell Biology, School of Life Sciences, Central South University, Changsha, Hunan, China
| | - Lan He
- School of Biomedical Science, Hunan University, Changsha, Hunan, China
| | - Shubing Zhang
- Department of Cell Biology, School of Life Sciences, Central South University, Changsha, Hunan, China
| | - Xiaotang Di
- Department of Cell Biology, School of Life Sciences, Central South University, Changsha, Hunan, China
| | - Hao Jiang
- Department of Biomedical Informatics, School of Life Sciences, Central South University, Changsha, Hunan, China
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Padgett LR, Shinkle MR, Rosario S, Stewart TM, Foley JR, Casero RA, Park MH, Chung WK, Mastracci TL. Deoxyhypusine synthase mutations alter the post-translational modification of eukaryotic initiation factor 5A resulting in impaired human and mouse neural homeostasis. HGG ADVANCES 2023; 4:100206. [PMID: 37333770 PMCID: PMC10275725 DOI: 10.1016/j.xhgg.2023.100206] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2023] [Revised: 05/11/2023] [Accepted: 05/15/2023] [Indexed: 06/20/2023] Open
Abstract
DHPS deficiency is a rare genetic disease caused by biallelic hypomorphic variants in the Deoxyhypusine synthase (DHPS) gene. The DHPS enzyme functions in mRNA translation by catalyzing the post-translational modification, and therefore activation, of eukaryotic initiation factor 5A (eIF5A). The observed clinical outcomes associated with human mutations in DHPS include developmental delay, intellectual disability, and seizures. Therefore, to increase our understanding of this rare disease, it is critical to determine the mechanisms by which mutations in DHPS alter neurodevelopment. In this study, we have generated patient-derived lymphoblast cell lines and demonstrated that human DHPS variants alter DHPS protein abundance and impair enzyme function. Moreover, we observe a shift in the abundance of the post-translationally modified forms of eIF5A; specifically, an increase in the nuclear localized acetylated form (eIF5AAcK47) and concomitant decrease in the cytoplasmic localized hypusinated form (eIF5AHYP). Generation and characterization of a mouse model with a genetic deletion of Dhps in the brain at birth shows that loss of hypusine biosynthesis impacts neuronal function due to impaired eIF5AHYP-dependent mRNA translation; this translation defect results in altered expression of proteins required for proper neuronal development and function. This study reveals new insight into the biological consequences and molecular impact of human DHPS deficiency and provides valuable information toward the goal of developing treatment strategies for this rare disease.
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Affiliation(s)
- Leah R. Padgett
- Indiana Biosciences Research Institute, Indianapolis, IN 46202, USA
| | - Mollie R. Shinkle
- Department of Biology, Indiana University Purdue University Indianapolis, Indianapolis, IN 46202, USA
| | - Spencer Rosario
- Department of Biostatistics and Bioinformatics, Roswell Park Comprehensive Cancer Center, Buffalo, NY 14203, USA
| | - Tracy Murray Stewart
- Sidney Kimmel Comprehensive Cancer Center, Johns Hopkins University School of Medicine, Baltimore, MD 21231, USA
| | - Jackson R. Foley
- Sidney Kimmel Comprehensive Cancer Center, Johns Hopkins University School of Medicine, Baltimore, MD 21231, USA
| | - Robert A. Casero
- Sidney Kimmel Comprehensive Cancer Center, Johns Hopkins University School of Medicine, Baltimore, MD 21231, USA
| | - Myung Hee Park
- National Institute of Dental and Craniofacial Research, National Institutes of Health, Bethesda, MD 20892-4340, USA
| | - Wendy K. Chung
- Departments of Pediatrics and Medicine, Columbia University, New York, NY 10032, USA
| | - Teresa L. Mastracci
- Department of Biology, Indiana University Purdue University Indianapolis, Indianapolis, IN 46202, USA
- Department of Biochemistry and Molecular Biology, Indiana University School of Medicine, Indianapolis, IN 46202, USA
- Center for Diabetes and Metabolic Diseases, Indiana University School of Medicine, Indianapolis, IN 46202, USA
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9
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Connors CT, Anderson-Baucum EK, Rosario S, Villaca CBP, Rutan CD, Childress PJ, Padgett LR, Robertson MA, Mastracci TL. Deoxyhypusine synthase is required for the translational regulation of pancreatic beta cell maturation. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2023:2023.04.24.537996. [PMID: 37162889 PMCID: PMC10168283 DOI: 10.1101/2023.04.24.537996] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/11/2023]
Abstract
As professional secretory cells, beta cells require adaptable mRNA translation to facilitate a rapid synthesis of proteins, including insulin, in response to changing metabolic cues. Specialized mRNA translation programs are essential drivers of cellular development and differentiation. However, in the pancreatic beta cell, the majority of factors identified to promote growth and development function primarily at the level of transcription. Therefore, despite its importance, the regulatory role of mRNA translation in the formation and maintenance of functional beta cells is not well defined. In this study, we have identified a translational regulatory mechanism in the beta cell driven by the specialized mRNA translation factor, eukaryotic initiation factor 5A (eIF5A), which facilitates beta cell maturation. The mRNA translation function of eIF5A is only active when it is post-translationally modified ("hypusinated") by the enzyme deoxyhypusine synthase (DHPS). We have discovered that the absence of beta cell DHPS in mice reduces the synthesis of proteins critical to beta cell identity and function at the stage of beta cell maturation, leading to a rapid and reproducible onset of diabetes. Therefore, our work has revealed a gatekeeper of specialized mRNA translation that permits the beta cell, a metabolically responsive secretory cell, to maintain the integrity of protein synthesis necessary during times of induced or increased demand. ARTICLE HIGHLIGHTS Pancreatic beta cells are professional secretory cells that require adaptable mRNA translation for the rapid, inducible synthesis of proteins, including insulin, in response to changing metabolic cues. Our previous work in the exocrine pancreas showed that development and function of the acinar cells, which are also professional secretory cells, is regulated at the level of mRNA translation by a specialized mRNA translation factor, eIF5A HYP . We hypothesized that this translational regulation, which can be a response to stress such as changes in growth or metabolism, may also occur in beta cells. Given that the mRNA translation function of eIF5A is only active when the factor is post-translationally modified ("hypusinated") by the enzyme deoxyhypusine synthase (DHPS), we asked the question: does DHPS/eIF5A HYP regulate the formation and maintenance of functional beta cells? We discovered that in the absence of beta cell DHPS in mice, eIF5A is not hypusinated (activated), which leads to a reduction in the synthesis of critical beta cell proteins that interrupts pathways critical for identity and function. This translational regulation occurs at weaning age, which is a stage of cellular stress and maturation for the beta cell. Therefore without DHPS/eIF5A HYP , beta cells do not mature and mice progress to hyperglycemia and diabetes. Our findings suggest that secretory cells have a mechanism to regulate mRNA translation during times of cellular stress. Our work also implies that driving an increase in mRNA translation in the beta cell might overcome or possibly reverse the beta cell defects that contribute to early dysfunction and the progression to diabetes.
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10
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Wątor E, Wilk P, Biela A, Rawski M, Zak KM, Steinchen W, Bange G, Glatt S, Grudnik P. Cryo-EM structure of human eIF5A-DHS complex reveals the molecular basis of hypusination-associated neurodegenerative disorders. Nat Commun 2023; 14:1698. [PMID: 36973244 PMCID: PMC10042821 DOI: 10.1038/s41467-023-37305-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2022] [Accepted: 03/09/2023] [Indexed: 03/29/2023] Open
Abstract
Hypusination is a unique post-translational modification of the eukaryotic translation factor 5A (eIF5A) that is essential for overcoming ribosome stalling at polyproline sequence stretches. The initial step of hypusination, the formation of deoxyhypusine, is catalyzed by deoxyhypusine synthase (DHS), however, the molecular details of the DHS-mediated reaction remained elusive. Recently, patient-derived variants of DHS and eIF5A have been linked to rare neurodevelopmental disorders. Here, we present the cryo-EM structure of the human eIF5A-DHS complex at 2.8 Å resolution and a crystal structure of DHS trapped in the key reaction transition state. Furthermore, we show that disease-associated DHS variants influence the complex formation and hypusination efficiency. Hence, our work dissects the molecular details of the deoxyhypusine synthesis reaction and reveals how clinically-relevant mutations affect this crucial cellular process.
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Affiliation(s)
- Elżbieta Wątor
- Małopolska Centre of Biotechnology, Jagiellonian University, Kraków, Poland
- Doctoral School of Exact and Natural Sciences, Jagiellonian University, Kraków, Poland
| | - Piotr Wilk
- Małopolska Centre of Biotechnology, Jagiellonian University, Kraków, Poland
| | - Artur Biela
- Małopolska Centre of Biotechnology, Jagiellonian University, Kraków, Poland
| | - Michał Rawski
- Małopolska Centre of Biotechnology, Jagiellonian University, Kraków, Poland
| | - Krzysztof M Zak
- Małopolska Centre of Biotechnology, Jagiellonian University, Kraków, Poland
| | - Wieland Steinchen
- Philipps-University Marburg, Center for Synthetic Microbiology (SYNMIKRO) & Faculty of Chemistry, Marburg, Germany
| | - Gert Bange
- Philipps-University Marburg, Center for Synthetic Microbiology (SYNMIKRO) & Faculty of Chemistry, Marburg, Germany
- Max Planck Institute for Terrestrial Microbiology, Molecular Physiology of Microbes, Marburg, Germany
| | - Sebastian Glatt
- Małopolska Centre of Biotechnology, Jagiellonian University, Kraków, Poland
| | - Przemysław Grudnik
- Małopolska Centre of Biotechnology, Jagiellonian University, Kraków, Poland.
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11
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Schultz CR, Sheldon RD, Xie H, Demireva EY, Uhl KL, Agnew DW, Geerts D, Bachmann AS. New K50R mutant mouse models reveal impaired hypusination of eif5a2 with alterations in cell metabolite landscape. Biol Open 2023; 12:290754. [PMID: 36848144 PMCID: PMC10084858 DOI: 10.1242/bio.059647] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2022] [Accepted: 02/21/2023] [Indexed: 03/01/2023] Open
Abstract
The eukaryotic translation initiation factor 5A1 (eIF5A1) and 5A2 (eIF5A2) are important proteins in a variety of physiological and pathophysiological processes and their function has been linked to neurodevelopmental disorders, cancer, and viral infections. Here, we report two new genome-edited mouse models, generated using a CRISPR-Cas9 approach, in which the amino acid residue lysine 50 is replaced with arginine 50 (K50R) in eIF5A1 or in the closely related eIF5A2 protein. This mutation prevents the spermidine-dependent post-translational formation of hypusine, a unique lysine derivative that is necessary for activation of eIF5A1 and eIF5A2. Mouse brain lysates from homozygous eif5a2-K50R mutant mice (eif5a2K50R/K50R) confirmed the absence of hypusine formation of eIF5A2, and metabolomic analysis of primary mouse dermal fibroblasts revealed significant alterations in the metabolite landscape compared to controls including increased levels of tryptophan, kyrunenine, pyridoxine, nicotinamide adenine dinucleotide, riboflavin, flavin adenine dinucleotide, pantothenate, and coenzyme A. Further supported by new publicly available bioinformatics data, these new mouse models represent excellent in vivo models to study hypusine-dependent biological processes, hypusination-related disorders caused by eIF5A1 and eIF5A2 gene aberrations or mRNA expression dysregulation, as well as several major human cancer types and potential therapies.
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Affiliation(s)
- Chad R Schultz
- Department of Pediatrics and Human Development, College of Human Medicine, Michigan State University, Grand Rapids, MI 49503, USA
| | - Ryan D Sheldon
- Core Technologies and Services, Mass Spectrometry Core, Van Andel Institute, Grand Rapids, MI 49503, USA
| | - Huirong Xie
- Transgenic and Genome Editing Facility, Institute for Quantitative Health Science and Engineering, Research Technology Support Facility, Michigan State University, East Lansing, MI 48824, USA
| | - Elena Y Demireva
- Transgenic and Genome Editing Facility, Institute for Quantitative Health Science and Engineering, Research Technology Support Facility, Michigan State University, East Lansing, MI 48824, USA
| | - Katie L Uhl
- Department of Pediatrics and Human Development, College of Human Medicine, Michigan State University, Grand Rapids, MI 49503, USA
| | - Dalen W Agnew
- Department of Pathobiology & Diagnostic Investigation, College of Veterinary Medicine, Michigan State University, East Lansing, MI 48824, USA
| | - Dirk Geerts
- Department of Hematology, Amsterdam University Medical Center, Location VUMC, 1081 HV Amsterdam, The Netherlands
| | - André S Bachmann
- Department of Pediatrics and Human Development, College of Human Medicine, Michigan State University, Grand Rapids, MI 49503, USA
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12
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Hofer SJ, Simon AK, Bergmann M, Eisenberg T, Kroemer G, Madeo F. Mechanisms of spermidine-induced autophagy and geroprotection. NATURE AGING 2022; 2:1112-1129. [PMID: 37118547 DOI: 10.1038/s43587-022-00322-9] [Citation(s) in RCA: 33] [Impact Index Per Article: 16.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/06/2022] [Accepted: 10/28/2022] [Indexed: 04/30/2023]
Abstract
Aging involves the systemic deterioration of all known cell types in most eukaryotes. Several recently discovered compounds that extend the healthspan and lifespan of model organisms decelerate pathways that govern the aging process. Among these geroprotectors, spermidine, a natural polyamine ubiquitously found in organisms from all kingdoms, prolongs the lifespan of fungi, nematodes, insects and rodents. In mice, it also postpones the manifestation of various age-associated disorders such as cardiovascular disease and neurodegeneration. The specific features of spermidine, including its presence in common food items, make it an interesting candidate for translational aging research. Here, we review novel insights into the geroprotective mode of action of spermidine at the molecular level, as we discuss strategies for elucidating its clinical potential.
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Affiliation(s)
- Sebastian J Hofer
- Institute of Molecular Biosciences, NAWI Graz, University of Graz, Graz, Austria
- Field of Excellence BioHealth, University of Graz, Graz, Austria
- BioTechMed Graz, Graz, Austria
- Centre de Recherche des Cordeliers, Equipe labellisée par la Ligue contre le cancer, Université de Paris Cité, Sorbonne Université, Inserm U1138, Institut Universitaire de France, Paris, France
- Metabolomics and Cell Biology Platforms, Institut Gustave Roussy, Villejuif, France
| | - Anna Katharina Simon
- Kennedy Institute of Rheumatology, University of Oxford, Oxford, UK
- Max Delbrück Center, Berlin, Germany
| | - Martina Bergmann
- Institute of Molecular Biosciences, NAWI Graz, University of Graz, Graz, Austria
| | - Tobias Eisenberg
- Institute of Molecular Biosciences, NAWI Graz, University of Graz, Graz, Austria
- Field of Excellence BioHealth, University of Graz, Graz, Austria
- BioTechMed Graz, Graz, Austria
| | - Guido Kroemer
- Centre de Recherche des Cordeliers, Equipe labellisée par la Ligue contre le cancer, Université de Paris Cité, Sorbonne Université, Inserm U1138, Institut Universitaire de France, Paris, France.
- Metabolomics and Cell Biology Platforms, Institut Gustave Roussy, Villejuif, France.
- Institut du Cancer Paris CARPEM, Department of Biology, Hôpital Européen Georges Pompidou, AP-HP, Paris, France.
| | - Frank Madeo
- Institute of Molecular Biosciences, NAWI Graz, University of Graz, Graz, Austria.
- Field of Excellence BioHealth, University of Graz, Graz, Austria.
- BioTechMed Graz, Graz, Austria.
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13
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Cheng L, Su Y, Zhi K, Xie Y, Zhang C, Meng X. Conditional deletion of MAD2B in forebrain neurons enhances hippocampus-dependent learning and memory in mice. Front Cell Neurosci 2022; 16:956029. [PMID: 36212696 PMCID: PMC9538151 DOI: 10.3389/fncel.2022.956029] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2022] [Accepted: 08/24/2022] [Indexed: 11/13/2022] Open
Abstract
Mitotic arrest deficient 2-like protein 2 (MAD2B) is not only a DNA damage repair agent but also a cell cycle regulator that is widely expressed in the hippocampus and the cerebral cortex. However, the functions of MAD2B in hippocampal and cerebral cortical neurons are poorly understood. In this study, we crossed MAD2Bflox/flox and calcium/calmodulin-dependent protein kinase II alpha (Camk2a)-Cre mice to conditionally knock out MAD2B in the forebrain pyramidal neurons by the Cre/loxP recombinase system. First, RNA sequencing suggested that the differentially expressed genes in the hippocampus and the cerebral cortex between the WT and the MAD2B cKO mice were related to learning and memory. Then, the results of behavioral tests, including the Morris water maze test, the novel object recognition test, and the contextual fear conditioning experiment, suggested that the learning and memory abilities of the MAD2B cKO mice had improved. Moreover, conditional knockout of MAD2B increased the number of neurons without affecting the number of glial cells in the hippocampal CA1 and the cerebral cortex. At the same time, the number of doublecortin-positive (DCX+) cells was increased in the dentate gyrus (DG) of the MAD2B cKO mice. In addition, as shown by Golgi staining, the MAD2B cKO mice had more mushroom-like and long-like spines than the WT mice. Transmission electron microscopy (TEM) revealed that spine synapses increased and shaft synapses decreased in the CA1 of the MAD2B cKO mice. Taken together, our findings indicated that MAD2B plays an essential role in regulating learning and memory.
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Affiliation(s)
- Li Cheng
- Department of Neurobiology, Institute of Brain Research, School of Basic Medical Sciences, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Yanfang Su
- Department of Neurobiology, Institute of Brain Research, School of Basic Medical Sciences, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Kaining Zhi
- Department of Neurobiology, Institute of Brain Research, School of Basic Medical Sciences, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Yaru Xie
- Department of Neurobiology, Institute of Brain Research, School of Basic Medical Sciences, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
- Department of Nephrology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Chun Zhang
- Department of Nephrology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
- *Correspondence: Chun Zhang
| | - Xianfang Meng
- Department of Neurobiology, Institute of Brain Research, School of Basic Medical Sciences, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
- Xianfang Meng
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14
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Ziegler A, Steindl K, Hanner AS, Kumar Kar R, Prouteau C, Boland A, Deleuze JF, Coubes C, Bézieau S, Küry S, Maystadt I, Le Mao M, Lenaers G, Navet B, Faivre L, Tran Mau-Them F, Zanoni P, Chung WK, Rauch A, Bonneau D, Park MH. Bi-allelic variants in DOHH, catalyzing the last step of hypusine biosynthesis, are associated with a neurodevelopmental disorder. Am J Hum Genet 2022; 109:1549-1558. [PMID: 35858628 PMCID: PMC9388783 DOI: 10.1016/j.ajhg.2022.06.010] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2021] [Accepted: 06/21/2022] [Indexed: 02/06/2023] Open
Abstract
Deoxyhypusine hydroxylase (DOHH) is the enzyme catalyzing the second step in the post-translational synthesis of hypusine [Nε-(4-amino-2-hydroxybutyl)lysine] in the eukaryotic initiation factor 5A (eIF5A). Hypusine is formed exclusively in eIF5A by two sequential enzymatic steps catalyzed by deoxyhypusine synthase (DHPS) and deoxyhypusine hydroxylase (DOHH). Hypusinated eIF5A is essential for translation and cell proliferation in eukaryotes, and all three genes encoding eIF5A, DHPS, and DOHH are highly conserved throughout eukaryotes. Pathogenic variants affecting either DHPS or EIF5A have been previously associated with neurodevelopmental disorders. Using trio exome sequencing, we identified rare bi-allelic pathogenic missense and truncating DOHH variants segregating with disease in five affected individuals from four unrelated families. The DOHH variants are associated with a neurodevelopmental phenotype that is similar to phenotypes caused by DHPS or EIF5A variants and includes global developmental delay, intellectual disability, facial dysmorphism, and microcephaly. A two-dimensional gel analyses revealed the accumulation of deoxyhypusine-containing eIF5A [eIF5A(Dhp)] and a reduction in the hypusinated eIF5A in fibroblasts derived from affected individuals, providing biochemical evidence for deficiency of DOHH activity in cells carrying the bi-allelic DOHH variants. Our data suggest that rare bi-allelic variants in DOHH result in reduced enzyme activity, limit the hypusination of eIF5A, and thereby lead to a neurodevelopmental disorder.
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Affiliation(s)
- Alban Ziegler
- Département de Génétique Médicale, Centre Hospitalier Universitaire d’Angers, 49933, Angers France,Université d’Angers, MitoVasc Unit, UMR Centre National de la Recherche Scientifique 6015, INSERM 1083, 49000 Angers, France,Corresponding author
| | - Katharina Steindl
- Institute of Medical Genetics, University of Zurich, 8952 Schlieren-Zurich, Switzerland
| | - Ashleigh S. Hanner
- National Institute of Dental and Craniofacial Research, National Institutes of Health, Bethesda, MD 20892-4340, USA
| | - Rajesh Kumar Kar
- National Institute of Dental and Craniofacial Research, National Institutes of Health, Bethesda, MD 20892-4340, USA
| | - Clément Prouteau
- Département de Génétique Médicale, Centre Hospitalier Universitaire d’Angers, 49933, Angers France
| | - Anne Boland
- Université Paris-Saclay, CEA, Centre National de Recherche en Génomique Humaine, 91057, Evry, France
| | - Jean Francois Deleuze
- Université Paris-Saclay, CEA, Centre National de Recherche en Génomique Humaine, 91057, Evry, France
| | - Christine Coubes
- Département de Génétique Médicale, Hôpital Arnaud de Villeneuve, Centre Hospitalier-Universitaire de Montpellier, 34295 Montpellier, France
| | - Stéphane Bézieau
- Nantes Université, Centre Hospitalier Universitaire Nantes, Service de Génétique Médicale, 44000 Nantes, France,Nantes Université, Centre Hospitalier Universitaire Nantes, Centre National de la Recherche Scientifique, INSERM, l’institut du thorax, 44000 Nantes, France
| | - Sébastien Küry
- Nantes Université, Centre Hospitalier Universitaire Nantes, Service de Génétique Médicale, 44000 Nantes, France,Nantes Université, Centre Hospitalier Universitaire Nantes, Centre National de la Recherche Scientifique, INSERM, l’institut du thorax, 44000 Nantes, France
| | - Isabelle Maystadt
- Centre de Génétique Humaine, Institut de Pathologie et de Génétique, 6041 Gosselies, Belgique
| | - Morgane Le Mao
- Université d’Angers, MitoVasc Unit, UMR Centre National de la Recherche Scientifique 6015, INSERM 1083, 49000 Angers, France
| | - Guy Lenaers
- Université d’Angers, MitoVasc Unit, UMR Centre National de la Recherche Scientifique 6015, INSERM 1083, 49000 Angers, France,Service de Neurologie, Centre Hospitalier Universitaire d’Angers, 49933, Angers France
| | - Benjamin Navet
- Département de Génétique Médicale, Centre Hospitalier Universitaire d’Angers, 49933, Angers France
| | - Laurence Faivre
- Unité de Formation et de Recherche des Sciences de Santé, INSERM-Université de Bourgogne, UMR 1231, Genetics of Developmental Disorders, FHU-TRANSLAD, 21000, Dijon, France,Centre de Référence Anomalies du Développement et Syndromes Malformatifs, FHU-TRANSLAD, Hôpital d'Enfants, Centre Hospitalier Universitaire Dijon, 21000, Dijon, France
| | - Frédéric Tran Mau-Them
- Unité de Formation et de Recherche des Sciences de Santé, INSERM-Université de Bourgogne, UMR 1231, Genetics of Developmental Disorders, FHU-TRANSLAD, 21000, Dijon, France,Unité Fonctionnelle d’Innovation Diagnostique des Maladies Rares, FHU-TRANSLAD, Centre Hospitalier Universitaire Dijon Bourgogne, Dijon, France
| | - Paolo Zanoni
- Institute of Medical Genetics, University of Zurich, 8952 Schlieren-Zurich, Switzerland
| | - Wendy K. Chung
- Department of Pediatrics, Columbia University, New York, NY 10032, USA,Department of Medicine, Columbia University, New York, NY 10032, USA
| | - Anita Rauch
- Institute of Medical Genetics, University of Zurich, 8952 Schlieren-Zurich, Switzerland,University Children's Hospital Zurich, University of Zurich, Zurich, Switzerland
| | - Dominique Bonneau
- Département de Génétique Médicale, Centre Hospitalier Universitaire d’Angers, 49933, Angers France,Université d’Angers, MitoVasc Unit, UMR Centre National de la Recherche Scientifique 6015, INSERM 1083, 49000 Angers, France
| | - Myung Hee Park
- National Institute of Dental and Craniofacial Research, National Institutes of Health, Bethesda, MD 20892-4340, USA,Corresponding author
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15
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Farache D, Liu L, Lee ASY. Eukaryotic Initiation Factor 5A2 Regulates Expression of Antiviral Genes. J Mol Biol 2022; 434:167564. [PMID: 35358571 DOI: 10.1016/j.jmb.2022.167564] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2021] [Revised: 03/22/2022] [Accepted: 03/22/2022] [Indexed: 12/14/2022]
Abstract
Translation factors are essential for regulation of protein synthesis. The eukaryotic translation initiation factor 5A (eIF5A) family is made up of two paralogues - eIF5A1 and eIF5A2 - which display high sequence homology but distinct tissue tropism. While eIF5A1 directly binds to the ribosome and regulates translation initiation, elongation, and termination, the molecular function of eIF5A2 remains poorly understood. Here, we engineer an eIF5A2 knockout allele in the SW480 colon cancer cell line. Using ribosome profiling and RNA-Sequencing, we reveal that eIF5A2 is functionally distinct from eIF5A1 and does not regulate transcript-specific or global protein synthesis. Instead, eIF5A2 knockout leads to decreased intrinsic antiviral gene expression, including members of the IFITM and APOBEC3 family. Furthermore, cells lacking eIF5A2 display increased permissiveness to virus infection. Our results uncover eIF5A2 as a factor involved regulating the antiviral transcriptome, and reveal an example of how gene duplications of translation factors can result in proteins with distinct functions.
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Affiliation(s)
- Dorian Farache
- Department of Cell Biology, Harvard Medical School, Boston, MA 02115, USA; Department of Cancer Immunology and Virology, Dana-Farber Cancer Institute, Boston, MA 02115, USA
| | - Luochen Liu
- Department of Cell Biology, Harvard Medical School, Boston, MA 02115, USA; Department of Cancer Immunology and Virology, Dana-Farber Cancer Institute, Boston, MA 02115, USA
| | - Amy S Y Lee
- Department of Cell Biology, Harvard Medical School, Boston, MA 02115, USA; Department of Cancer Immunology and Virology, Dana-Farber Cancer Institute, Boston, MA 02115, USA.
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16
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Tauc M, Cougnon M, Carcy R, Melis N, Hauet T, Pellerin L, Blondeau N, Pisani DF. The eukaryotic initiation factor 5A (eIF5A1), the molecule, mechanisms and recent insights into the pathophysiological roles. Cell Biosci 2021; 11:219. [PMID: 34952646 PMCID: PMC8705083 DOI: 10.1186/s13578-021-00733-y] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2021] [Accepted: 12/14/2021] [Indexed: 11/29/2022] Open
Abstract
Since the demonstration of its involvement in cell proliferation, the eukaryotic initiation factor 5A (eIF5A) has been studied principally in relation to the development and progression of cancers in which the isoform A2 is mainly expressed. However, an increasing number of studies report that the isoform A1, which is ubiquitously expressed in normal cells, exhibits novel molecular features that reveal its new relationships between cellular functions and organ homeostasis. At a first glance, eIF5A can be regarded, among other things, as a factor implicated in the initiation of translation. Nevertheless, at least three specificities: (1) its extreme conservation between species, including plants, throughout evolution, (2) its very special and unique post-translational modification through the activating-hypusination process, and finally (3) its close relationship with the polyamine pathway, suggest that the role of eIF5A in living beings remains to be uncovered. In fact, and beyond its involvement in facilitating the translation of proteins containing polyproline residues, eIF5A is implicated in various physiological processes including ischemic tolerance, metabolic adaptation, aging, development, and immune cell differentiation. These newly discovered physiological properties open up huge opportunities in the clinic for pathologies such as, for example, the ones in which the oxygen supply is disrupted. In this latter case, organ transplantation, myocardial infarction or stroke are concerned, and the current literature defines eIF5A as a new drug target with a high level of potential benefit for patients with these diseases or injuries. Moreover, the recent use of genomic and transcriptomic association along with metadata studies also revealed the implication of eIF5A in genetic diseases. Thus, this review provides an overview of eIF5A from its molecular mechanism of action to its physiological roles and the clinical possibilities that have been recently reported in the literature.
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Affiliation(s)
- Michel Tauc
- LP2M, CNRS, Université Côte d'Azur, Nice, France. .,Laboratories of Excellence Ion Channel Science and Therapeutics, Nice, France. .,Laboratoire de Physiomédecine Moléculaire, UMR7370, Faculté de Médecine, CNRS, Université Côte d'Azur, 28 Avenue de Valombrose, 06107, Nice Cedex, France.
| | - Marc Cougnon
- LP2M, CNRS, Université Côte d'Azur, Nice, France.,Laboratories of Excellence Ion Channel Science and Therapeutics, Nice, France
| | - Romain Carcy
- Service de Réanimation Polyvalente et Service de Réanimation des Urgences Vitales, CHU Nice, Hôpital Pasteur 2, Nice, France
| | - Nicolas Melis
- Laboratory of Cellular and Molecular Biology, Center for Cancer Research, National Cancer Institute, Bethesda, MD, 20892, USA
| | - Thierry Hauet
- INSERM, IRTOMIT, CHU de Poitiers, Université de Poitiers, La Milétrie, Poitiers, France
| | - Luc Pellerin
- INSERM, IRTOMIT, CHU de Poitiers, Université de Poitiers, La Milétrie, Poitiers, France
| | - Nicolas Blondeau
- Laboratories of Excellence Ion Channel Science and Therapeutics, Nice, France.,IPMC, CNRS, Université Côte d'Azur, Valbonne, France
| | - Didier F Pisani
- LP2M, CNRS, Université Côte d'Azur, Nice, France.,Laboratories of Excellence Ion Channel Science and Therapeutics, Nice, France
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