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Vázquez-Lizarraga R, Mendoza-Viveros L, Cid-Castro C, Ruiz-Montoya S, Carreño-Vázquez E, Orozco-Solis R. Hypothalamic circuits and aging: keeping the circadian clock updated. Neural Regen Res 2024; 19:1919-1928. [PMID: 38227516 DOI: 10.4103/1673-5374.389624] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2023] [Accepted: 10/20/2023] [Indexed: 01/17/2024] Open
Abstract
Over the past century, age-related diseases, such as cancer, type-2 diabetes, obesity, and mental illness, have shown a significant increase, negatively impacting overall quality of life. Studies on aged animal models have unveiled a progressive discoordination at multiple regulatory levels, including transcriptional, translational, and post-translational processes, resulting from cellular stress and circadian derangements. The circadian clock emerges as a key regulator, sustaining physiological homeostasis and promoting healthy aging through timely molecular coordination of pivotal cellular processes, such as stem-cell function, cellular stress responses, and inter-tissue communication, which become disrupted during aging. Given the crucial role of hypothalamic circuits in regulating organismal physiology, metabolic control, sleep homeostasis, and circadian rhythms, and their dependence on these processes, strategies aimed at enhancing hypothalamic and circadian function, including pharmacological and non-pharmacological approaches, offer systemic benefits for healthy aging. Intranasal brain-directed drug administration represents a promising avenue for effectively targeting specific brain regions, like the hypothalamus, while reducing side effects associated with systemic drug delivery, thereby presenting new therapeutic possibilities for diverse age-related conditions.
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Affiliation(s)
| | - Lucia Mendoza-Viveros
- Instituto Nacional de Medicina Genómica (INMEGEN), México City, México
- Centro de Investigacíon sobre el Envejecimiento, Centro de Investigacíon y de Estudios Avanzados (CIE-CINVESTAV), México City, México
- Instituto de Investigaciones Biomédicas, Universidad Nacional Autónoma de México UNAM, México City, México
| | - Carolina Cid-Castro
- Instituto Nacional de Medicina Genómica (INMEGEN), México City, México
- Centro de Investigacíon sobre el Envejecimiento, Centro de Investigacíon y de Estudios Avanzados (CIE-CINVESTAV), México City, México
- Instituto de Investigaciones Biomédicas, Universidad Nacional Autónoma de México UNAM, México City, México
| | | | | | - Ricardo Orozco-Solis
- Instituto Nacional de Medicina Genómica (INMEGEN), México City, México
- Centro de Investigacíon sobre el Envejecimiento, Centro de Investigacíon y de Estudios Avanzados (CIE-CINVESTAV), México City, México
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2
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Wang X, Lv X, Ma J, Xu G. UFMylation: An integral post-translational modification for the regulation of proteostasis and cellular functions. Pharmacol Ther 2024; 260:108680. [PMID: 38878974 DOI: 10.1016/j.pharmthera.2024.108680] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2024] [Revised: 06/03/2024] [Accepted: 06/12/2024] [Indexed: 06/23/2024]
Abstract
Ubiquitin-fold modifier 1 (UFM1) is covalently conjugated to protein substrates via a cascade of enzymatic reactions, a process known as UFMylation. UFMylation orchestrates an array of vital biological functions, including maintaining endoplasmic reticulum (ER) homeostasis, facilitating protein biogenesis, promoting cellular differentiation, regulating DNA damage response, and participating in cancer-associated signaling pathways. UFMylation has rapidly evolved into one of the forefront research areas within the last few years, yet much remains to be uncovered. In this review, first, UFMylation and its cellular functions associated with diseases are briefly introduced. Then, we summarize the proteomic approaches for identifying UFMylation substrates and explore the impact of UFMylation on gene transcription, protein translation, and maintenance of ER homeostasis. Next, we highlight the intricate regulation between UFMylation and two protein degradation pathways, the ubiquitin-proteasome system and the autophagy-lysosome pathway, and explore the potential of UFMylation system as a drug target. Finally, we discuss emerging perspectives in the UFMylation field. This review may provide valuable insights for drug discovery targeting the UFMylation system.
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Affiliation(s)
- Xiaohui Wang
- Jiangsu Key Laboratory of Neuropsychiatric Diseases and College of Pharmaceutical Sciences, Jiangsu Province Engineering Research Center of Precision Diagnostics and Therapeutics Development, Jiangsu Key Laboratory of Preventive and Translational Medicine for Geriatric Diseases, Suzhou Key Laboratory of Drug Research for Prevention and Treatment of Hyperlipidemic Diseases, Soochow University, Suzhou, Jiangsu 215123, China.
| | - Xiaowei Lv
- Jiangsu Key Laboratory of Neuropsychiatric Diseases and College of Pharmaceutical Sciences, Jiangsu Province Engineering Research Center of Precision Diagnostics and Therapeutics Development, Jiangsu Key Laboratory of Preventive and Translational Medicine for Geriatric Diseases, Suzhou Key Laboratory of Drug Research for Prevention and Treatment of Hyperlipidemic Diseases, Soochow University, Suzhou, Jiangsu 215123, China.
| | - Jingjing Ma
- Department of Pharmacy, The Fourth Affiliated Hospital of Soochow University, Suzhou Dushu Lake Hospital, Medical Center of Soochow University, Suzhou, Jiangsu 215123, China.
| | - Guoqiang Xu
- Jiangsu Key Laboratory of Neuropsychiatric Diseases and College of Pharmaceutical Sciences, Jiangsu Province Engineering Research Center of Precision Diagnostics and Therapeutics Development, Jiangsu Key Laboratory of Preventive and Translational Medicine for Geriatric Diseases, Suzhou Key Laboratory of Drug Research for Prevention and Treatment of Hyperlipidemic Diseases, Soochow University, Suzhou, Jiangsu 215123, China; Suzhou International Joint Laboratory for Diagnosis and Treatment of Brain Diseases, College of Pharmaceutical Sciences, Soochow University, Suzhou, Jiangsu 215123, China; MOE Key Laboratory of Geriatric Diseases and Immunology, Suzhou Medical College of Soochow University, Suzhou, Jiangsu Province 215123, China.
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3
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Liu J, Li J, Tang Y, Zhou K, Zhao X, Zhang J, Zhang H. Transcriptome analysis combined with Mendelian randomization screening for biomarkers causally associated with diabetic retinopathy. Front Endocrinol (Lausanne) 2024; 15:1410066. [PMID: 39022342 PMCID: PMC11251905 DOI: 10.3389/fendo.2024.1410066] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/31/2024] [Accepted: 06/06/2024] [Indexed: 07/20/2024] Open
Abstract
Background Diabetic retinopathy (DR) is considered one of the most severe complications of diabetes mellitus, but its pathogenesis is still unclear. We hypothesize that certain genes exert a pivotal influence on the progression of DR. This study explored biomarkers for the diagnosis and treatment of DR through bioinformatics analysis. Methods Within the GSE221521 and GSE189005 datasets, candidate genes were acquired from intersections of genes obtained using WGCNA and DESeq2 packages. Mendelian randomization (MR) analysis selected candidate biomarkers exhibiting causal relationships with DR. Receiver Operating Characteristic (ROC) analysis determined the diagnostic efficacy of biomarkers, the expression levels of biomarkers were verified in the GSE221521 and GSE189005 datasets, and a nomogram for diagnosing DR was constructed. Enrichment analysis delineated the roles and pathways associated with the biomarkers. Immune infiltration analysis analyzed the differences in immune cells between DR and control groups. The miRNet and networkanalyst databases were then used to predict the transcription factors (TFs) and miRNAs, respectively, of biomarkers. Finally, RT-qPCR was used to verify the expression of the biomarkers in vitro. Results MR analysis identified 13 candidate biomarkers that had causal relationships with DR. The ROC curve demonstrated favorable diagnostic performance of three biomarkers (OSER1, HIPK2, and DDRGK1) for DR, and their expression trends were consistent across GSE221521 and GSE189005 datasets. The calibration curves and ROC curves indicated good predictive performance of the nomogram. The biomarkers were enriched in pathways of immune, cancer, amino acid metabolism, and oxidative phosphorylation. Ten immune cell lines showed notable disparities between the DR and control groups. Among them, effector memory CD8+ T cells, plasmacytoid dendritic cells, and activated CD4+ T cells exhibited good correlation with biomarker expression. The TF-mRNA-miRNA network suggested that hsa-mir-92a-3p, GATA2, and RELA play important roles in biomarker targeting for DR. RT-qPCR results also demonstrated a notably high expression of HIPK2 in patients with DR, whereas notably low expression of OSER1. Conclusion OSER1, HIPK2, and DDRGK1 were identified as biomarkers for DR. The study findings provide novel insights into the pathogenesis of DR.
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Affiliation(s)
- Junyi Liu
- Department of Ophthalmology, The Second Affiliated Hospital of Kunming Medical University, Kunming, China
| | - Jinghua Li
- Department of Ophthalmology, The Second Affiliated Hospital of Kunming Medical University, Kunming, China
| | - Yongying Tang
- Department of Ophthalmology, The Second Affiliated Hospital of Kunming Medical University, Kunming, China
| | - Kunyi Zhou
- Department of Ophthalmology, The Second Affiliated Hospital of Kunming Medical University, Kunming, China
| | - Xueying Zhao
- Department of Ophthalmology, The Second Affiliated Hospital of Kunming Medical University, Kunming, China
| | - Jie Zhang
- Department of Ophthalmology, Dali Bai Autonomous Prefecture People’s Hospital, Dali, China
| | - Hong Zhang
- Department of Ophthalmology, The Second Affiliated Hospital of Kunming Medical University, Kunming, China
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4
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Yan T, Heckman MG, Craver EC, Liu CC, Rawlinson BD, Wang X, Murray ME, Dickson DW, Ertekin-Taner N, Lou Z, Bu G, Springer W, Fiesel FC. The UFMylation pathway is impaired in Alzheimer's disease. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2024:2024.05.24.595755. [PMID: 38903110 PMCID: PMC11188091 DOI: 10.1101/2024.05.24.595755] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/22/2024]
Abstract
Background Alzheimer's disease (AD) is characterized by the presence of neurofibrillary tangles made of hyperphosphorylated tau and senile plaques composed of beta-amyloid. These pathognomonic deposits have been implicated in the pathogenesis, although the molecular mechanisms and consequences remain undetermined. UFM1 is an important, but understudied ubiquitin-like protein that is covalently attached to substrates. This UFMylation has recently been identified as major modifier of tau aggregation upon seeding in experimental models. However, potential alterations of the UFM1 pathway in human AD brain have not been investigated yet. Methods Here we used frontal and temporal cortex samples from individuals with or without AD to measure the protein levels of the UFMylation pathway in human brain. We used multivariable regression analyses followed by Bonferroni correction for multiple testing to analyze associations of the UFMylation pathway with neuropathological characteristics, primary biochemical measurements of tau and additional biochemical markers from the same cases. We further studied associations of the UFMylation cascade with cellular stress pathways using Spearman correlations with bulk RNAseq expression data and functionally validated these interactions using gene-edited neurons that were generated by CRISPR-Cas9. Results Compared to controls, human AD brain had increased protein levels of UFM1. Our data further indicates that this increase mainly reflects conjugated UFM1 indicating hyperUFMylation in AD. UFMylation was strongly correlated with pathological tau in both AD-affected brain regions. In addition, we found that the levels of conjugated UFM1 were negatively correlated with soluble levels of the deUFMylation enzyme UFSP2. Functional analysis of UFM1 and/or UFSP2 knockout neurons revealed that the DNA damage response as well as the unfolded protein response are perturbed by changes in neuronal UFM1 signaling. Conclusions There are marked changes in the UFMylation pathway in human AD brain. These changes are significantly associated with pathological tau, supporting the idea that the UFMylation cascade might indeed act as a modifier of tau pathology in human brain. Our study further nominates UFSP2 as an attractive target to reduce the hyperUFMylation observed in AD brain but also underscores the critical need to identify risks and benefits of manipulating the UFMylation pathway as potential therapeutic avenue for AD.
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Affiliation(s)
- Tingxiang Yan
- Department of Neuroscience, Mayo Clinic, Jacksonville, FL 32224, USA
| | - Michael G. Heckman
- Division of Clinical Trials and Biostatistics, Mayo Clinic, Jacksonville, FL, USA
| | - Emily C. Craver
- Division of Clinical Trials and Biostatistics, Mayo Clinic, Jacksonville, FL, USA
| | - Chia-Chen Liu
- Department of Neuroscience, Mayo Clinic, Jacksonville, FL 32224, USA
| | | | - Xue Wang
- Department of Neuroscience, Mayo Clinic, Jacksonville, FL 32224, USA
| | - Melissa E. Murray
- Department of Neuroscience, Mayo Clinic, Jacksonville, FL 32224, USA
- Neuroscience PhD Program, Mayo Clinic Graduate School of Biomedical Sciences, Jacksonville, FL 32224, USA
| | - Dennis W. Dickson
- Department of Neuroscience, Mayo Clinic, Jacksonville, FL 32224, USA
- Neuroscience PhD Program, Mayo Clinic Graduate School of Biomedical Sciences, Jacksonville, FL 32224, USA
| | - Nilufer Ertekin-Taner
- Department of Neuroscience, Mayo Clinic, Jacksonville, FL 32224, USA
- Neuroscience PhD Program, Mayo Clinic Graduate School of Biomedical Sciences, Jacksonville, FL 32224, USA
| | - Zhenkun Lou
- Department of Oncology, Mayo Clinic, Rochester, MN, 55905, USA
| | - Guojun Bu
- Department of Neuroscience, Mayo Clinic, Jacksonville, FL 32224, USA
| | - Wolfdieter Springer
- Department of Neuroscience, Mayo Clinic, Jacksonville, FL 32224, USA
- Neuroscience PhD Program, Mayo Clinic Graduate School of Biomedical Sciences, Jacksonville, FL 32224, USA
| | - Fabienne C. Fiesel
- Department of Neuroscience, Mayo Clinic, Jacksonville, FL 32224, USA
- Neuroscience PhD Program, Mayo Clinic Graduate School of Biomedical Sciences, Jacksonville, FL 32224, USA
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5
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Wang Z, Xiong S, Wu Z, Wang X, Gong Y, Zhu WG, Xu X. VCP/p97 UFMylation stabilizes BECN1 and facilitates the initiation of autophagy. Autophagy 2024:1-14. [PMID: 38762759 DOI: 10.1080/15548627.2024.2356488] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2023] [Accepted: 05/13/2024] [Indexed: 05/20/2024] Open
Abstract
Macroautophagy/autophagy is essential for the degradation and recycling of cytoplasmic materials. The initiation of this process is determined by phosphatidylinositol-3-kinase (PtdIns3K) complex, which is regulated by factor BECN1 (beclin 1). UFMylation is a novel ubiquitin-like modification that has been demonstrated to modulate several cellular activities. However, the role of UFMylation in regulating autophagy has not been fully elucidated. Here, we found that VCP/p97 is UFMylated on K109 by the E3 UFL1 (UFM1 specific ligase 1) and this modification promotes BECN1 stabilization and assembly of the PtdIns3K complex, suggesting a role for VCP/p97 UFMylation in autophagy initiation. Mechanistically, VCP/p97 UFMylation stabilizes BECN1 through ATXN3 (ataxin 3)-mediated deubiquitination. As a key component of the PtdIns3K complex, stabilized BECN1 facilitates assembly of this complex. Re-expression of VCP/p97, but not the UFMylation-defective mutant, rescued the VCP/p97 depletion-induced increase in MAP1LC3B/LC3B protein expression. We also showed that several pathogenic VCP/p97 mutations identified in a variety of neurological disorders and cancers were associated with reduced UFMylation, thus implicating VCP/p97 UFMylation as a potential therapeutic target for these diseases. Abbreviation: ATG14:autophagy related 14; Baf A1:bafilomycin A1;CMT2Y: Charcot-Marie-Toothdisease, axonal, 2Y; CYB5R3: cytochromeb5 reductase 3; DDRGK1: DDRGK domain containing 1; DMEM:Dulbecco'smodified Eagle's medium;ER:endoplasmic reticulum; FBS:fetalbovine serum;FTDALS6:frontotemporaldementia and/or amyotrophic lateral sclerosis 6; IBMPFD1:inclusion bodymyopathy with early-onset Paget disease with or withoutfrontotemporal dementia 1; LC-MS/MS:liquid chromatography tandem mass spectrometry; MAP1LC3B/LC3B:microtubule associated protein 1 light chain 3 beta; MS: massspectrometry; NPLOC4: NPL4 homolog, ubiquitin recognition factor;PIK3C3: phosphatidylinositol 3-kinase catalytic subunit type 3;PIK3R4: phosphoinositide-3-kinase regulatory subunit 4; PtdIns3K:phosphatidylinositol 3-kinase; RPL26: ribosomal protein L26; RPN1:ribophorin I; SQSTM1/p62: sequestosome 1; UBA5: ubiquitin likemodifier activating enzyme 5; UFC1: ubiquitin-fold modifierconjugating enzyme 1; UFD1: ubiquitin recognition factor in ERassociated degradation 1; UFL1: UFM1 specific ligase 1; UFM1:ubiquitin fold modifier 1; UFSP2: UFM1 specific peptidase 2; UVRAG:UV radiation resistance associated; VCP/p97: valosin containingprotein; WT: wild-type.
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Affiliation(s)
- Zhifeng Wang
- Guangdong Key Laboratory for Genome Stability & Disease Prevention and Carson International Cancer Center, Marshall Laboratory of Biomedical Engineering, Shenzhen University Medical School, Shenzhen University, Shenzhen, Guangdong, China
| | - Shuhui Xiong
- Guangdong Key Laboratory for Genome Stability & Disease Prevention and Carson International Cancer Center, Marshall Laboratory of Biomedical Engineering, Shenzhen University Medical School, Shenzhen University, Shenzhen, Guangdong, China
| | - Zhaoyi Wu
- Guangdong Key Laboratory for Genome Stability & Disease Prevention and Carson International Cancer Center, Marshall Laboratory of Biomedical Engineering, Shenzhen University Medical School, Shenzhen University, Shenzhen, Guangdong, China
| | - Xingde Wang
- Guangdong Key Laboratory for Genome Stability & Disease Prevention and Carson International Cancer Center, Marshall Laboratory of Biomedical Engineering, Shenzhen University Medical School, Shenzhen University, Shenzhen, Guangdong, China
| | - Yamin Gong
- Guangdong Key Laboratory for Genome Stability & Disease Prevention and Carson International Cancer Center, Marshall Laboratory of Biomedical Engineering, Shenzhen University Medical School, Shenzhen University, Shenzhen, Guangdong, China
| | - Wei-Guo Zhu
- Guangdong Key Laboratory for Genome Stability & Disease Prevention and Carson International Cancer Center, Marshall Laboratory of Biomedical Engineering, Shenzhen University Medical School, Shenzhen University, Shenzhen, Guangdong, China
| | - Xingzhi Xu
- Guangdong Key Laboratory for Genome Stability & Disease Prevention and Carson International Cancer Center, Marshall Laboratory of Biomedical Engineering, Shenzhen University Medical School, Shenzhen University, Shenzhen, Guangdong, China
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6
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Thibault E, Brandizzi F. Post-translational modifications: emerging directors of cell-fate decisions during endoplasmic reticulum stress in Arabidopsis thaliana. Biochem Soc Trans 2024; 52:831-848. [PMID: 38600022 PMCID: PMC11088923 DOI: 10.1042/bst20231025] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2024] [Revised: 03/23/2024] [Accepted: 04/02/2024] [Indexed: 04/12/2024]
Abstract
Homeostasis of the endoplasmic reticulum (ER) is critical for growth, development, and stress responses. Perturbations causing an imbalance in ER proteostasis lead to a potentially lethal condition known as ER stress. In ER stress situations, cell-fate decisions either activate pro-life pathways that reestablish homeostasis or initiate pro-death pathways to prevent further damage to the organism. Understanding the mechanisms underpinning cell-fate decisions in ER stress is critical for crop development and has the potential to enable translation of conserved components to ER stress-related diseases in metazoans. Post-translational modifications (PTMs) of proteins are emerging as key players in cell-fate decisions in situations of imbalanced ER proteostasis. In this review, we address PTMs orchestrating cell-fate decisions in ER stress in plants and provide evidence-based perspectives for where future studies may focus to identify additional PTMs involved in ER stress management.
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Affiliation(s)
- Ethan Thibault
- Department of Energy Plant Research Laboratory, Michigan State University, East Lansing, MI, U.S.A
- Department of Plant Biology, Michigan State University, East Lansing, MI, U.S.A
| | - Federica Brandizzi
- Department of Energy Plant Research Laboratory, Michigan State University, East Lansing, MI, U.S.A
- Department of Plant Biology, Michigan State University, East Lansing, MI, U.S.A
- Great Lakes Bioenergy Research Center, Michigan State University, East Lansing, MI, U.S.A
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7
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Tian T, Chen J, Zhao H, Li Y, Xia F, Huang J, Han J, Liu T. UFL1 triggers replication fork degradation by MRE11 in BRCA1/2-deficient cells. Nat Chem Biol 2024:10.1038/s41589-024-01611-7. [PMID: 38649452 DOI: 10.1038/s41589-024-01611-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2023] [Accepted: 03/26/2024] [Indexed: 04/25/2024]
Abstract
The stabilization of stalled forks has emerged as a crucial mechanism driving resistance to poly(ADP-ribose) polymerase (PARP) inhibitors in BRCA1/2-deficient tumors. Here, we identify UFL1, a UFM1-specific E3 ligase, as a pivotal regulator of fork stability and the response to PARP inhibitors in BRCA1/2-deficient cells. On replication stress, UFL1 localizes to stalled forks and catalyzes the UFMylation of PTIP, a component of the MLL3/4 methyltransferase complex, specifically at lysine 148. This modification facilitates the assembly of the PTIP-MLL3/4 complex, resulting in the enrichment of H3K4me1 and H3K4me3 at stalled forks and subsequent recruitment of the MRE11 nuclease. Consequently, loss of UFL1, disruption of PTIP UFMylation or overexpression of the UFM1 protease UFSP2 protects nascent DNA strands from extensive degradation and confers resistance to PARP inhibitors in BRCA1/2-deficient cells. These findings provide mechanistic insights into the processes underlying fork instability in BRCA1/2-deficient cells and offer potential therapeutic avenues for the treatment of BRCA1/2-deficient tumors.
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Affiliation(s)
- Tian Tian
- Zhejiang Key Laboratory of Geriatrics and Geriatrics Institute of Zhejiang Province, Affiliated Zhejiang Hospital, Zhejiang University School of Medicine, Hangzhou, China
- The MOE Key Laboratory of Biosystems Homeostasis and Protection and Zhejiang Provincial Key Laboratory of Cancer Molecular Cell Biology, Life Sciences Institute, Zhejiang University, Hangzhou, China
| | - Junliang Chen
- Center for Life Sciences, Shaoxing Institute, Zhejiang University, Shaoxing, China
| | - Huacun Zhao
- Department of Cell Biology, and Department of General Surgery of Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - Yulin Li
- The MOE Key Laboratory of Biosystems Homeostasis and Protection and Zhejiang Provincial Key Laboratory of Cancer Molecular Cell Biology, Life Sciences Institute, Zhejiang University, Hangzhou, China
| | - Feiyu Xia
- Department of Cell Biology, and Department of General Surgery of Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - Jun Huang
- Zhejiang Key Laboratory of Geriatrics and Geriatrics Institute of Zhejiang Province, Affiliated Zhejiang Hospital, Zhejiang University School of Medicine, Hangzhou, China
- The MOE Key Laboratory of Biosystems Homeostasis and Protection and Zhejiang Provincial Key Laboratory of Cancer Molecular Cell Biology, Life Sciences Institute, Zhejiang University, Hangzhou, China
- Center for Life Sciences, Shaoxing Institute, Zhejiang University, Shaoxing, China
- Cancer Center, Zhejiang University, Hangzhou, China
| | - Jinhua Han
- Zhejiang Key Laboratory of Geriatrics and Geriatrics Institute of Zhejiang Province, Affiliated Zhejiang Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - Ting Liu
- Zhejiang Key Laboratory of Geriatrics and Geriatrics Institute of Zhejiang Province, Affiliated Zhejiang Hospital, Zhejiang University School of Medicine, Hangzhou, China.
- Department of Cell Biology, and Department of General Surgery of Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou, China.
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8
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Javed SA, Najmi A, Ahsan W, Zoghebi K. Targeting PD-1/PD-L-1 immune checkpoint inhibition for cancer immunotherapy: success and challenges. Front Immunol 2024; 15:1383456. [PMID: 38660299 PMCID: PMC11039846 DOI: 10.3389/fimmu.2024.1383456] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2024] [Accepted: 03/25/2024] [Indexed: 04/26/2024] Open
Abstract
The programmed death-1 receptor (PD-1) acts as a T-cell brake, and its interaction with ligand-1 (PD-L-1) interferes with signal transduction of the T-cell receptor. This leads to suppression of T-cell survival, proliferation, and activity in the tumor microenvironment resulting in compromised anticancer immunity. PD-1/PD-L-1 interaction blockade shown remarkable clinical success in various cancer immunotherapies. To date, most PD-1/PD-L-1 blockers approved for clinical use are monoclonal antibodies (mAbs); however, their therapeutic use are limited owing to poor clinical responses in a proportion of patients. mAbs also displayed low tumor penetration, steep production costs, and incidences of immune-related side effects. This strongly indicates the importance of developing novel inhibitors as cancer immunotherapeutic agents. Recently, advancements in the small molecule-based inhibitors (SMIs) that directly block the PD-1/PD-L-1 axis gained attention from the scientific community involved in cancer research. SMIs demonstrated certain advantages over mAbs, including longer half-lives, low cost, greater cell penetration, and possibility of oral administration. Currently, several SMIs are in development pipeline as potential therapeutics for cancer immunotherapy. To develop new SMIs, a wide range of structural scaffolds have been explored with excellent outcomes; biphenyl-based scaffolds are most studied. In this review, we analyzed the development of mAbs and SMIs targeting PD-1/PD-L-1 axis for cancer treatment. Altogether, the present review delves into the problems related to mAbs use and a detailed discussion on the development and current status of SMIs. This article may provide a comprehensive guide to medicinal chemists regarding the potential structural scaffolds required for PD-1/PD-L-1 interaction inhibition.
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Affiliation(s)
| | - Asim Najmi
- Department of Pharmaceutical Chemistry, College of Pharmacy, Jazan University, Jazan, Saudi Arabia
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9
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He C, Xing X, Chen HY, Gao M, Shi J, Xiang B, Xiao X, Sun Y, Yu H, Xu G, Yao Y, Xie Z, Xing Y, Budiarto BR, Chen SY, Gao Y, Lee YR, Zhang J. UFL1 ablation in T cells suppresses PD-1 UFMylation to enhance anti-tumor immunity. Mol Cell 2024; 84:1120-1138.e8. [PMID: 38377992 DOI: 10.1016/j.molcel.2024.01.024] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2023] [Revised: 11/10/2023] [Accepted: 01/26/2024] [Indexed: 02/22/2024]
Abstract
UFMylation is an emerging ubiquitin-like post-translational modification that regulates various biological processes. Dysregulation of the UFMylation pathway leads to human diseases, including cancers. However, the physiological role of UFMylation in T cells remains unclear. Here, we report that mice with conditional knockout (cKO) Ufl1, a UFMylation E3 ligase, in T cells exhibit effective tumor control. Single-cell RNA sequencing analysis shows that tumor-infiltrating cytotoxic CD8+ T cells are increased in Ufl1 cKO mice. Mechanistically, UFL1 promotes PD-1 UFMylation to antagonize PD-1 ubiquitination and degradation. Furthermore, AMPK phosphorylates UFL1 at Thr536, disrupting PD-1 UFMylation to trigger its degradation. Of note, UFL1 ablation in T cells reduces PD-1 UFMylation, subsequently destabilizing PD-1 and enhancing CD8+ T cell activation. Thus, Ufl1 cKO mice bearing tumors have a better response to anti-CTLA-4 immunotherapy. Collectively, our findings uncover a crucial role of UFMylation in T cells and highlight UFL1 as a potential target for cancer treatment.
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Affiliation(s)
- Chuan He
- Department of Radiation and Medical Oncology, Medical Research Institute, Frontier Science Center of Immunology and Metabolism, Zhongnan Hospital of Wuhan University, Wuhan University, Wuhan 430071, China; Taikang Center for Life and Medical Sciences, Wuhan University, Wuhan 430071, China
| | - Xixin Xing
- Department of Radiation and Medical Oncology, Medical Research Institute, Frontier Science Center of Immunology and Metabolism, Zhongnan Hospital of Wuhan University, Wuhan University, Wuhan 430071, China; Taikang Center for Life and Medical Sciences, Wuhan University, Wuhan 430071, China
| | - Hsin-Yi Chen
- Institute of Biomedical Sciences, Academia Sinica, Taipei 115201, Taiwan
| | - Minling Gao
- Department of Radiation and Medical Oncology, Medical Research Institute, Frontier Science Center of Immunology and Metabolism, Zhongnan Hospital of Wuhan University, Wuhan University, Wuhan 430071, China; Taikang Center for Life and Medical Sciences, Wuhan University, Wuhan 430071, China
| | - Jie Shi
- Department of Radiation and Medical Oncology, Medical Research Institute, Frontier Science Center of Immunology and Metabolism, Zhongnan Hospital of Wuhan University, Wuhan University, Wuhan 430071, China; Taikang Center for Life and Medical Sciences, Wuhan University, Wuhan 430071, China
| | - Bolin Xiang
- Department of Radiation and Medical Oncology, Medical Research Institute, Frontier Science Center of Immunology and Metabolism, Zhongnan Hospital of Wuhan University, Wuhan University, Wuhan 430071, China; Taikang Center for Life and Medical Sciences, Wuhan University, Wuhan 430071, China
| | - Xiangling Xiao
- Department of Radiation and Medical Oncology, Medical Research Institute, Frontier Science Center of Immunology and Metabolism, Zhongnan Hospital of Wuhan University, Wuhan University, Wuhan 430071, China; Taikang Center for Life and Medical Sciences, Wuhan University, Wuhan 430071, China
| | - Yishuang Sun
- Department of Radiation and Medical Oncology, Medical Research Institute, Frontier Science Center of Immunology and Metabolism, Zhongnan Hospital of Wuhan University, Wuhan University, Wuhan 430071, China; Taikang Center for Life and Medical Sciences, Wuhan University, Wuhan 430071, China
| | - Haisheng Yu
- Department of Radiation and Medical Oncology, Medical Research Institute, Frontier Science Center of Immunology and Metabolism, Zhongnan Hospital of Wuhan University, Wuhan University, Wuhan 430071, China; Taikang Center for Life and Medical Sciences, Wuhan University, Wuhan 430071, China
| | - Gaoshan Xu
- Department of Radiation and Medical Oncology, Medical Research Institute, Frontier Science Center of Immunology and Metabolism, Zhongnan Hospital of Wuhan University, Wuhan University, Wuhan 430071, China; Taikang Center for Life and Medical Sciences, Wuhan University, Wuhan 430071, China
| | - Yingmeng Yao
- Department of Radiation and Medical Oncology, Medical Research Institute, Frontier Science Center of Immunology and Metabolism, Zhongnan Hospital of Wuhan University, Wuhan University, Wuhan 430071, China; Taikang Center for Life and Medical Sciences, Wuhan University, Wuhan 430071, China
| | - Zuosong Xie
- Department of Radiation and Medical Oncology, Medical Research Institute, Frontier Science Center of Immunology and Metabolism, Zhongnan Hospital of Wuhan University, Wuhan University, Wuhan 430071, China; Taikang Center for Life and Medical Sciences, Wuhan University, Wuhan 430071, China
| | - Yujie Xing
- Department of Urology, the First Affiliated Hospital of Xi'an Jiaotong University, Xi'an 710061, Shaanxi, China
| | - Bugi Ratno Budiarto
- Institute of Biomedical Sciences, Academia Sinica, Taipei 115201, Taiwan; Taiwan International Graduate Program in Molecular Medicine, National Yang Ming Chiao Tung University and Academia Sinica, Taipei, Taiwan
| | - Shih-Yu Chen
- Institute of Biomedical Sciences, Academia Sinica, Taipei 115201, Taiwan
| | - Yang Gao
- Department of Urology, the First Affiliated Hospital of Xi'an Jiaotong University, Xi'an 710061, Shaanxi, China
| | - Yu-Ru Lee
- Institute of Biomedical Sciences, Academia Sinica, Taipei 115201, Taiwan.
| | - Jinfang Zhang
- Department of Radiation and Medical Oncology, Medical Research Institute, Frontier Science Center of Immunology and Metabolism, Zhongnan Hospital of Wuhan University, Wuhan University, Wuhan 430071, China; Taikang Center for Life and Medical Sciences, Wuhan University, Wuhan 430071, China.
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10
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Chen H, Wang YD, Blan AW, Almanza-Fuerte EP, Bonkowski ES, Bajpai R, Pruett-Miller SM, Mefford HC. Patient derived model of UBA5-associated encephalopathy identifies defects in neurodevelopment and highlights potential therapies. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2024:2024.01.25.577254. [PMID: 38328212 PMCID: PMC10849720 DOI: 10.1101/2024.01.25.577254] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/09/2024]
Abstract
UBA5 encodes for the E1 enzyme of the UFMylation cascade, which plays an essential role in ER homeostasis. The clinical phenotypes of UBA5-associated encephalopathy include developmental delays, epilepsy and intellectual disability. To date, there is no humanized neuronal model to study the cellular and molecular consequences of UBA5 pathogenic variants. We developed and characterized patient-derived cortical organoid cultures and identified defects in GABAergic interneuron development. We demonstrated aberrant neuronal firing and microcephaly phenotypes in patient-derived organoids. Mechanistically, we show that ER homeostasis is perturbed along with exacerbated unfolded protein response pathway in cells and organoids expressing UBA5 pathogenic variants. We also assessed two gene expression modalities that augmented UBA5 expression to rescue aberrant molecular and cellular phenotypes. Our study provides a novel humanized model that allows further investigations of UBA5 variants in the brain and highlights novel systemic approaches to alleviate cellular aberrations for this rare, developmental disorder.
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Affiliation(s)
- Helen Chen
- Center for Pediatric Neurological Disease Research, St. Jude Children’s Research Hospital, Memphis, TN, USA
| | - Yong-Dong Wang
- Department of Cell and Molecular Biology, St. Jude Children’s Research Hospital, Memphis TN, USA
| | - Aidan W. Blan
- Center for Pediatric Neurological Disease Research, St. Jude Children’s Research Hospital, Memphis, TN, USA
| | - Edith P. Almanza-Fuerte
- Center for Pediatric Neurological Disease Research, St. Jude Children’s Research Hospital, Memphis, TN, USA
| | - Emily S. Bonkowski
- Center for Pediatric Neurological Disease Research, St. Jude Children’s Research Hospital, Memphis, TN, USA
| | - Richa Bajpai
- Department of Cell and Molecular Biology, St. Jude Children’s Research Hospital, Memphis TN, USA
- Center for Advanced Genome Engineering, St. Jude Children’s Research Hospital, Memphis TN, USA
| | - Shondra M. Pruett-Miller
- Department of Cell and Molecular Biology, St. Jude Children’s Research Hospital, Memphis TN, USA
- Center for Advanced Genome Engineering, St. Jude Children’s Research Hospital, Memphis TN, USA
| | - Heather C. Mefford
- Center for Pediatric Neurological Disease Research, St. Jude Children’s Research Hospital, Memphis, TN, USA
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11
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Zhou X, Mahdizadeh SJ, Le Gallo M, Eriksson LA, Chevet E, Lafont E. UFMylation: a ubiquitin-like modification. Trends Biochem Sci 2024; 49:52-67. [PMID: 37945409 DOI: 10.1016/j.tibs.2023.10.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2023] [Revised: 09/28/2023] [Accepted: 10/06/2023] [Indexed: 11/12/2023]
Abstract
Post-translational modifications (PTMs) add a major degree of complexity to the proteome and are essential controllers of protein homeostasis. Amongst the hundreds of PTMs identified, ubiquitin and ubiquitin-like (UBL) modifications are recognized as key regulators of cellular processes through their ability to affect protein-protein interactions, protein stability, and thus the functions of their protein targets. Here, we focus on the most recently identified UBL, ubiquitin-fold modifier 1 (UFM1), and the machinery responsible for its transfer to substrates (UFMylation) or its removal (deUFMylation). We first highlight the biochemical peculiarities of these processes, then we develop on how UFMylation and its machinery control various intertwined cellular processes and we highlight some of the outstanding research questions in this emerging field.
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Affiliation(s)
- Xingchen Zhou
- Inserm U1242, University of Rennes, Rennes, France; Centre de Lutte Contre le Cancer Eugène Marquis, Rennes, France
| | - Sayyed J Mahdizadeh
- Department of Chemistry and Molecular Biology, University of Gothenburg, Gothenburg, Sweden
| | - Matthieu Le Gallo
- Inserm U1242, University of Rennes, Rennes, France; Centre de Lutte Contre le Cancer Eugène Marquis, Rennes, France
| | - Leif A Eriksson
- Department of Chemistry and Molecular Biology, University of Gothenburg, Gothenburg, Sweden
| | - Eric Chevet
- Inserm U1242, University of Rennes, Rennes, France; Centre de Lutte Contre le Cancer Eugène Marquis, Rennes, France.
| | - Elodie Lafont
- Inserm U1242, University of Rennes, Rennes, France; Centre de Lutte Contre le Cancer Eugène Marquis, Rennes, France.
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12
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Cakir MO, Bilge U, Ghanbari A, Ashrafi GH. Regulatory Effect of Ficus carica Latex on Cell Cycle Progression in Human Papillomavirus-Positive Cervical Cancer Cell Lines: Insights from Gene Expression Analysis. Pharmaceuticals (Basel) 2023; 16:1723. [PMID: 38139849 PMCID: PMC10747314 DOI: 10.3390/ph16121723] [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: 11/07/2023] [Revised: 12/10/2023] [Accepted: 12/11/2023] [Indexed: 12/24/2023] Open
Abstract
Cervical cancer presents a significant global health concern with high-risk human papillomaviruses (HPVs) identified as the main cause of this cancer. Although current treatment methods for cervical cancer can eliminate lesions, preventing metastatic spread and minimizing tissue damage remain a major challenge. Therefore, the development of a safer and innovative therapeutic approach is of the utmost importance. Natural products like fig latex, derived from the Ficus carica tree, have demonstrated promising anti-cancer properties when tested on cervical cancer cell lines. However, the specific mechanisms by which fig latex exerts its effects are still unknown. In this study, we conducted RNA-Seq analysis to explore how fig latex may counteract carcinogenesis in HPV-positive cervical cancer cell lines, namely, CaSki (HPV type 16-positive) and HeLa (HPV type 18-positive). Our results from this investigation indicate that fig latex influences the expression of genes associated with the development and progression of cervical cancer, including pathways related to "Nonsense-Mediated Decay (NMD)", "Cell Cycle regulation", "Transcriptional Regulation by TP53", and "Apoptotic Process". This selective impact of fig latex on cancer-related pathways suggests a potential novel therapeutic approach for HPV-related cervical cancer.
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Affiliation(s)
- Muharrem Okan Cakir
- School of Life Sciences, Pharmacy and Chemistry, Kingston University London, London KT1 2EE, UK; (M.O.C.); (A.G.)
| | - Ugur Bilge
- Department of Biostatistics and Medical Informatics, Faculty of Medicine, Akdeniz University, Antalya 07050, Turkey;
| | - Arshia Ghanbari
- School of Life Sciences, Pharmacy and Chemistry, Kingston University London, London KT1 2EE, UK; (M.O.C.); (A.G.)
| | - G. Hossein Ashrafi
- Department of Biostatistics and Medical Informatics, Faculty of Medicine, Akdeniz University, Antalya 07050, Turkey;
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13
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Luo H, Jiao QB, Shen CB, Gong WY, Yuan JH, Liu YY, Chen Z, Liu J, Xu XL, Cong YS, Zhang XW. UFMylation of HRD1 regulates endoplasmic reticulum homeostasis. FASEB J 2023; 37:e23221. [PMID: 37795761 DOI: 10.1096/fj.202300004rrrr] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2023] [Revised: 08/28/2023] [Accepted: 09/12/2023] [Indexed: 10/06/2023]
Abstract
Ubiquitin fold modifier 1 is a small ubiquitin-like protein modifier that is essential for embryonic development of metazoans. Although UFMylation has been connected to endoplasmic reticulum homeostasis, the underlying mechanisms and the relevant cellular targets are largely unknown. Here, we show that HRD1, a ubiquitin ligase of ER-associated protein degradation (ERAD), is a novel substrate of UFM1 conjugation. HRD1 interacts with UFMylation components UFL1 and DDRGK1 and is UFMylated at Lys610 residue. In UFL1-depleted cells, the stability of HRD1 is increased and its ubiquitination modification is reduced. In the event of ER stress, the UFMylation and ubiquitination modification of HRD1 is gradually inhibited over time. Alteration of HRD1 Lys610 residue to arginine impairs its ability to degrade unfolded or misfolded proteins to disturb protein processing in ER. These results suggest that UFMylation of HRD1 facilitates ERAD function to maintain ER homeostasis.
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Affiliation(s)
- Hui Luo
- School of Clinical Medicine, Affiliated Hospital of Hangzhou Normal University, Hangzhou Normal University, Hangzhou, China
| | - Qi-Bin Jiao
- School of Clinical Medicine, Affiliated Hospital of Hangzhou Normal University, Hangzhou Normal University, Hangzhou, China
| | - Chuan-Bin Shen
- School of Clinical Medicine, Affiliated Hospital of Hangzhou Normal University, Hangzhou Normal University, Hangzhou, China
| | - Wen-Yan Gong
- School of Clinical Medicine, Affiliated Hospital of Hangzhou Normal University, Hangzhou Normal University, Hangzhou, China
| | - Jing-Hua Yuan
- School of Clinical Medicine, Affiliated Hospital of Hangzhou Normal University, Hangzhou Normal University, Hangzhou, China
| | - Ying-Ying Liu
- School of Clinical Medicine, Affiliated Hospital of Hangzhou Normal University, Hangzhou Normal University, Hangzhou, China
| | - Zhen Chen
- School of Clinical Medicine, Affiliated Hospital of Hangzhou Normal University, Hangzhou Normal University, Hangzhou, China
| | - Jiang Liu
- Key Laboratory of Aging and Cancer Biology of Zhejiang Province, School of Basic Medical Sciences, Hangzhou Normal University, Hangzhou, China
| | - Xiao-Ling Xu
- Key Laboratory of Aging and Cancer Biology of Zhejiang Province, School of Basic Medical Sciences, Hangzhou Normal University, Hangzhou, China
| | - Yu-Sheng Cong
- Key Laboratory of Aging and Cancer Biology of Zhejiang Province, School of Basic Medical Sciences, Hangzhou Normal University, Hangzhou, China
| | - Xing-Wei Zhang
- School of Clinical Medicine, Affiliated Hospital of Hangzhou Normal University, Hangzhou Normal University, Hangzhou, China
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14
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Wang X, Xu X, Wang Z. The Post-Translational Role of UFMylation in Physiology and Disease. Cells 2023; 12:2543. [PMID: 37947621 PMCID: PMC10648299 DOI: 10.3390/cells12212543] [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: 08/30/2023] [Revised: 10/13/2023] [Accepted: 10/20/2023] [Indexed: 11/12/2023] Open
Abstract
Ubiquitin-fold modifier 1 (UFM1) is a newly identified ubiquitin-like protein that has been conserved during the evolution of multicellular organisms. In a similar manner to ubiquitin, UFM1 can become covalently linked to the lysine residue of a substrate via a dedicated enzymatic cascade. Although a limited number of substrates have been identified so far, UFM1 modification (UFMylation) has been demonstrated to play a vital role in a variety of cellular activities, including mammalian development, ribosome biogenesis, the DNA damage response, endoplasmic reticulum stress responses, immune responses, and tumorigenesis. In this review, we summarize what is known about the UFM1 enzymatic cascade and its biological functions, and discuss its recently identified substrates. We also explore the pathological role of UFMylation in human disease and the corresponding potential therapeutic targets and strategies.
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Affiliation(s)
| | - Xingzhi Xu
- Guangdong Key Laboratory for Genome Stability & Disease Prevention and Carson International Cancer Center, Marshall Laboratory of Biomedical Engineering, Shenzhen University Medical School, Shenzhen 518060, China;
| | - Zhifeng Wang
- Guangdong Key Laboratory for Genome Stability & Disease Prevention and Carson International Cancer Center, Marshall Laboratory of Biomedical Engineering, Shenzhen University Medical School, Shenzhen 518060, China;
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15
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Hill MA, Sykes AM, Mellick GD. ER-phagy in neurodegeneration. J Neurosci Res 2023; 101:1611-1623. [PMID: 37334842 DOI: 10.1002/jnr.25225] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2023] [Revised: 05/11/2023] [Accepted: 05/31/2023] [Indexed: 06/21/2023]
Abstract
There are many cellular mechanisms implicated in the initiation and progression of neurodegenerative disorders. However, age and the accumulation of unwanted cellular products are a common theme underlying many neurodegenerative diseases including Alzheimer's disease, Parkinson's disease, and Niemann-Pick type C. Autophagy has been studied extensively in these diseases and various genetic risk factors have implicated disruption in autophagy homoeostasis as a major pathogenic mechanism. Autophagy is essential in the maintenance of neuronal homeostasis, as their postmitotic nature makes them particularly susceptible to the damage caused by accumulation of defective or misfolded proteins, disease-prone aggregates, and damaged organelles. Recently, autophagy of the endoplasmic reticulum (ER-phagy) has been identified as a novel cellular mechanism for regulating ER morphology and response to cellular stress. As neurodegenerative diseases are generally precipitated by cellular stressors such as protein accumulation and environmental toxin exposure the role of ER-phagy has begun to be investigated. In this review we discuss the current research in ER-phagy and its involvement in neurodegenerative diseases.
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Affiliation(s)
- Melissa A Hill
- Griffith Institute for Drug Discovery, Griffith University, Nathan, Queensland, Australia
| | - Alex M Sykes
- Griffith Institute for Drug Discovery, Griffith University, Nathan, Queensland, Australia
| | - George D Mellick
- Griffith Institute for Drug Discovery, Griffith University, Nathan, Queensland, Australia
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16
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Yang X, Zhou T, Wang X, Xia Y, Cao X, Cheng X, Cao Y, Ma P, Ma H, Qin A, Zhao J. Loss of DDRGK1 impairs IRE1α UFMylation in spondyloepiphyseal dysplasia. Int J Biol Sci 2023; 19:4709-4725. [PMID: 37781516 PMCID: PMC10539710 DOI: 10.7150/ijbs.82765] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2023] [Accepted: 08/27/2023] [Indexed: 10/03/2023] Open
Abstract
Spondyloepiphyseal dysplasia (SEMD) is a rare disease in which cartilage growth is disrupted, and the DDRGK1 mutation is one of the causative genes. In our study, we established Ddrgk1fl/fl, Col2a1-ERT Cre mice, which showed a thickened hypertrophic zone (HZ) in the growth plate, simulating the previous reported SEMD pathology in vivo. Instead of the classical modulation mechanism towards SOX9, our further mechanism study found that DDRGK1 stabilizes the stress sensor endoplasmic reticulum-to-nucleus signaling 1 (IRE1α) to maintain endoplasmic reticulum (ER) homoeostasis. The loss of DDRGK1 decreased the UFMylation and subsequently led to increased ubiquitylation-mediated IRE1α degradation, causing ER dysfunction and activating the PERK/CHOP/Caspase3 apoptosis pathway. Further DDRGK1 K268R-mutant mice revealed the importance of K268 UFMylation site in IRE1α degradation and subsequent ER dysfunction. In conclusion, DDRGK1 stabilizes IRE1α to ameliorate ER stress and following apoptosis in chondrocytes, which finally promote the normal chondrogenesis.
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Affiliation(s)
- Xiao Yang
- Shanghai Key Laboratory of Orthopedic Implants, Department of Orthopedics, Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Tangjun Zhou
- Shanghai Key Laboratory of Orthopedic Implants, Department of Orthopedics, Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Xin Wang
- Shanghai Key Laboratory of Orthopedic Implants, Department of Orthopedics, Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Ying Xia
- Institute of Precision Medicine, The Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Xiankun Cao
- Shanghai Key Laboratory of Orthopedic Implants, Department of Orthopedics, Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Xiaofei Cheng
- Shanghai Key Laboratory of Orthopedic Implants, Department of Orthopedics, Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Yu Cao
- Shanghai Key Laboratory of Orthopedic Implants, Department of Orthopedics, Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
- Institute of Precision Medicine, The Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Peixiang Ma
- Shanghai Key Laboratory of Orthopedic Implants, Department of Orthopedics, Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Hui Ma
- Shanghai Key Laboratory of Orthopedic Implants, Department of Orthopedics, Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - An Qin
- Shanghai Key Laboratory of Orthopedic Implants, Department of Orthopedics, Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Jie Zhao
- Shanghai Key Laboratory of Orthopedic Implants, Department of Orthopedics, Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
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17
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Mao Z, Ma X, Jing Y, Shen M, Ma X, Zhu J, Liu H, Zhang G, Chen F. Ufmylation on UFBP1 alleviates non-alcoholic fatty liver disease by modulating hepatic endoplasmic reticulum stress. Cell Death Dis 2023; 14:584. [PMID: 37660122 PMCID: PMC10475044 DOI: 10.1038/s41419-023-06095-2] [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: 04/01/2023] [Revised: 08/06/2023] [Accepted: 08/21/2023] [Indexed: 09/04/2023]
Abstract
Non-alcoholic fatty liver disease (NAFLD) is the most common liver disease characterized by lipid accumulation and endoplasmic reticulum (ER) stress, while effective therapies targeting the specific characteristics of NAFLD are limited. Ufmylation is a newly found post-translational modification process that involves the attachment of the Ubiquitin-fold modifier 1 (UFM1) protein to its substrates via ufmylation modification system. Ufmylation regulates ER stress via modifying UFM1 binding protein 1 (UFBP1), suggesting a potential role for ufmylation in NAFLD pathogenesis. However, the precise role of ufmylation in NAFLD remains unclear. Herein, we aim to elucidate the impact of ufmylation on UFBP1 in NAFLD and explore the underlying mechanisms involved. We observed increased expression of UFM1-conjugated proteins and ufmylation modification system components in livers with steatosis derived from NAFLD patients and NAFLD models. Upregulation of ufmylation on hepatic proteins appeared to be an adaptive response to hepatic ER stress in NAFLD. In vitro, knocking down UFBP1 resulted in increased lipid accumulation and lipogenesis in hepatocytes treated with free fatty acids (FFA), which could be rescued by wild-type UFBP1 (WT UFBP1) but not by a mutant form of UFBP1 lacking the main ufmylation site lys267 (UFBP1 K267R). In vivo, ufmylation on UFBP1 ameliorated obesity, hepatic steatosis, hepatic lipogenesis, dyslipidemia, insulin resistance and liver damage in mice with NAFLD induced by a high fat diet (HFD). We also demonstrated that the downregulation of UFBP1 induced ER stress, whereas the reintroduction or overexpression of UFBP1 alleviated ER stress in a manner dependent on ufmylation in NAFLD. This mechanism could be responsible for the amelioration of aberrant hepatic lipogenesis and insulin resistance in NAFLD. Our data reveal a protective role of ufmylation on UFBP1 against NAFLD and offer a specific target for NAFLD treatment.
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Affiliation(s)
- Ziming Mao
- Department of Endocrinology and Metabolism, Shanghai Ninth People's Hospital, Shanghai JiaoTong University School of Medicine, Shanghai, 201999, China
| | - Xiaowen Ma
- Department of Endocrinology and Metabolism, Shanghai Ninth People's Hospital, Shanghai JiaoTong University School of Medicine, Shanghai, 201999, China
| | - Yu Jing
- Department of Endocrinology and Metabolism, Shanghai Ninth People's Hospital, Shanghai JiaoTong University School of Medicine, Shanghai, 201999, China
| | - Minyan Shen
- School of Graduate, Bengbu Medical College, Bengbu, Anhui, 233030, China
| | - Xirui Ma
- Department of Endocrinology and Metabolism, Shanghai Ninth People's Hospital, Shanghai JiaoTong University School of Medicine, Shanghai, 201999, China
| | - Jing Zhu
- Department of Endocrinology and Metabolism, Shanghai Ninth People's Hospital, Shanghai JiaoTong University School of Medicine, Shanghai, 201999, China
| | - Huifang Liu
- Department of Endocrinology and Metabolism, Shanghai Ninth People's Hospital, Shanghai JiaoTong University School of Medicine, Shanghai, 201999, China.
| | - Guangya Zhang
- Department of Cardiology, Shanghai Sixth People's Hospital, Shanghai JiaoTong University School of Medicine, Shanghai, 200233, China.
| | - Fengling Chen
- Department of Endocrinology and Metabolism, Shanghai Ninth People's Hospital, Shanghai JiaoTong University School of Medicine, Shanghai, 201999, China.
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18
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Tandra V, Anderson T, Ayala JD, Weintraub NL, Singh N, Li H, Li J. Ufmylation of UFBP1 Is Dispensable for Endoplasmic Reticulum Stress Response, Embryonic Development, and Cardiac and Intestinal Homeostasis. Cells 2023; 12:1923. [PMID: 37566002 PMCID: PMC10416869 DOI: 10.3390/cells12151923] [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: 06/01/2023] [Revised: 06/20/2023] [Accepted: 07/18/2023] [Indexed: 08/12/2023] Open
Abstract
Protein modification by ubiquitin fold modifier 1 (UFM1), termed ufmylation, regulates various physiological and pathological processes. Among emerging UFM1 targets, UFM1 binding protein 1 (UFBP1) is the first identified ufmylation substrate. Recent clinical and animal studies have demonstrated the pivotal roles of UFBP1 in development, hematopoiesis, intestinal homeostasis, chondrogenesis, and neuronal development, which has been linked to its function in maintaining endoplasmic reticulum (ER) homeostasis. However, the importance of UFBP1 ufmylation in these cellular and physiological processes has yet to be determined. It has been proposed that ufmylation of lysine 268 (267 in humans) in UFBP1 plays a critical role in mediating the effects of the ufmylation pathway. In this study, we for the first time probe the pathophysiological significance of UFBP1 ufmylation in vivo by creating and characterizing a mouse UFBP1 knockin (KI) model in which the lysine 268 of UFBP1, the amino acid accepting UFM1, was mutated to arginine. Our results showed that the K268R mutation reduced the total ufmylated proteins without altering the expression levels of individual ufmylation enzymes in mouse embryonic fibroblasts. The K268R mutation did not alter ER stress-stimuli-induced ER stress signaling or cell death in mouse embryonic fibroblasts. The homozygous KI mice were viable and morphologically indistinguishable from their littermate wild-type controls up to one year of age. Serial echocardiography revealed no cardiac functional impairment of the homozygous KI mice. Furthermore, the homozygous KI mice exhibited the same susceptibility to dextran sulfate sodium (DSS) -induced colitis as wild-type mice. Taken together, these results suggest that UFBP1 K268 is dispensable for ER stress response, embryonic development, cardiac homeostasis under physiological conditions, and intestinal homeostasis under pathological conditions. Our studies call for future investigations to understand the biological function of UFBP1 ufmylation and offer a new mouse model to determine the roles of UFBP1 ufmylation in different tissues under stress conditions.
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Affiliation(s)
- Varsha Tandra
- Vascular Biology Center, Medical College of Georgia, Augusta University, Augusta, GA 30912, USA
| | - Travis Anderson
- Vascular Biology Center, Medical College of Georgia, Augusta University, Augusta, GA 30912, USA
| | - Juan D. Ayala
- Vascular Biology Center, Medical College of Georgia, Augusta University, Augusta, GA 30912, USA
| | - Neal L. Weintraub
- Vascular Biology Center, Medical College of Georgia, Augusta University, Augusta, GA 30912, USA
- Division of Cardiology, Department of Medicine, Medical College of Georgia, Augusta University, Augusta, GA 30912, USA
| | - Nagendra Singh
- Department of Biochemistry and Molecular Biology, Medical College of Georgia, Augusta University, Augusta, GA 30912, USA
| | - Honglin Li
- Department of Biochemistry and Molecular Biology, Medical College of Georgia, Augusta University, Augusta, GA 30912, USA
| | - Jie Li
- Vascular Biology Center, Medical College of Georgia, Augusta University, Augusta, GA 30912, USA
- Division of Cardiology, Department of Medicine, Medical College of Georgia, Augusta University, Augusta, GA 30912, USA
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19
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Wang X, Zhou T, Yang X, Cao X, Jin G, Zhang P, Guo J, Rong K, Li B, Hu Y, Liu K, Ma P, Qin A, Zhao J. DDRGK1 Enhances Osteosarcoma Chemoresistance via Inhibiting KEAP1-Mediated NRF2 Ubiquitination. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2023; 10:e2204438. [PMID: 36965071 DOI: 10.1002/advs.202204438] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/03/2022] [Revised: 02/14/2023] [Indexed: 05/18/2023]
Abstract
Chemoresistance is the main obstacle in osteosarcoma (OS) treatment; however, the underlying mechanism remains unclear. In this study, it is discovered that DDRGK domain-containing protein 1 (DDRGK1) plays a fundamental role in chemoresistance induced in OS. Bioinformatic and tissue analyses indicate that higher expression of DDRGK1 correlates with advanced tumor stage and poor clinical prognosis of OS. Quantitative proteomic analyses suggest that DDRGK1 plays a critical role in mitochondrial oxidative phosphorylation. DDRGK1 knockout trigger the accumulation of reactive oxygen species (ROS) and attenuate the stability of nuclear factor erythroid-2-related factor 2 (NRF2), a major antioxidant response element. Furthermore, DDRGK1 inhibits ubiquitin-proteasome-mediated degradation of NRF2 via competitive binding to the Kelch-like ECH-associated protein 1 (KEAP1) protein, which recruits NRF2 to CULLIN(CUL3). DDRGK1 knockout attenuates NRF2 stability, contributing to ROS accumulation, which promotes apoptosis and enhanced chemosensitivity to doxorubicin (DOX) and etoposide in cancer cells. Indeed, DDRGK1 knockout significantly enhances osteosarcoma chemosensitivity to DOX in vivo. The combination of DDRGK1 knockdown and DOX treatment provides a promising new avenue for the effective treatment of OS.
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Affiliation(s)
- Xin Wang
- Shanghai Key Laboratory of Orthopaedic Implants, Department of Orthopaedic Surgery, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, 639 Zhaizaoju Road, Shanghai, 200011, P. R. China
| | - Tangjun Zhou
- Shanghai Key Laboratory of Orthopaedic Implants, Department of Orthopaedic Surgery, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, 639 Zhaizaoju Road, Shanghai, 200011, P. R. China
| | - Xiao Yang
- Shanghai Key Laboratory of Orthopaedic Implants, Department of Orthopaedic Surgery, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, 639 Zhaizaoju Road, Shanghai, 200011, P. R. China
| | - Xiankun Cao
- Shanghai Key Laboratory of Orthopaedic Implants, Department of Orthopaedic Surgery, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, 639 Zhaizaoju Road, Shanghai, 200011, P. R. China
| | - Gu Jin
- The Cancer Hospital of the University of Chinese Academy of Sciences (Zhejiang Cancer Hospital), Institute of Basic Medicine and Cancer (IBMC), Chinese Academy of Sciences, Hangzhou, 310022, P. R. China
| | - Pu Zhang
- Shanghai Key Laboratory of Orthopaedic Implants, Department of Orthopaedic Surgery, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, 639 Zhaizaoju Road, Shanghai, 200011, P. R. China
| | - Jiadong Guo
- Shanghai Key Laboratory of Orthopaedic Implants, Department of Orthopaedic Surgery, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, 639 Zhaizaoju Road, Shanghai, 200011, P. R. China
| | - Kewei Rong
- Shanghai Key Laboratory of Orthopaedic Implants, Department of Orthopaedic Surgery, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, 639 Zhaizaoju Road, Shanghai, 200011, P. R. China
| | - Baixing Li
- Shanghai Key Laboratory of Orthopaedic Implants, Department of Orthopaedic Surgery, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, 639 Zhaizaoju Road, Shanghai, 200011, P. R. China
| | - Yibin Hu
- Shanghai Key Laboratory of Orthopaedic Implants, Department of Orthopaedic Surgery, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, 639 Zhaizaoju Road, Shanghai, 200011, P. R. China
| | - Kexin Liu
- Shanghai Key Laboratory of Orthopaedic Implants, Department of Orthopaedic Surgery, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, 639 Zhaizaoju Road, Shanghai, 200011, P. R. China
| | - Peixiang Ma
- Shanghai Key Laboratory of Orthopaedic Implants, Department of Orthopaedic Surgery, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, 639 Zhaizaoju Road, Shanghai, 200011, P. R. China
| | - An Qin
- Shanghai Key Laboratory of Orthopaedic Implants, Department of Orthopaedic Surgery, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, 639 Zhaizaoju Road, Shanghai, 200011, P. R. China
| | - Jie Zhao
- Shanghai Key Laboratory of Orthopaedic Implants, Department of Orthopaedic Surgery, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, 639 Zhaizaoju Road, Shanghai, 200011, P. R. China
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20
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Scavone F, Gumbin S, Da Rosa P, Kopito R. RPL26/uL24 UFMylation is essential for ribosome-associated quality control at the endoplasmic reticulum. Proc Natl Acad Sci U S A 2023; 120:e2220340120. [PMID: 37036982 PMCID: PMC10120006 DOI: 10.1073/pnas.2220340120] [Citation(s) in RCA: 16] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2022] [Accepted: 03/14/2023] [Indexed: 04/12/2023] Open
Abstract
Ribosomes that stall while translating cytosolic proteins are incapacitated by incomplete nascent chains, termed "arrest peptides" (APs) that are destroyed by the ubiquitin proteasome system (UPS) via a process known as the ribosome-associated quality control (RQC) pathway. By contrast, APs on ribosomes that stall while translocating secretory proteins into the endoplasmic reticulum (ER-APs) are shielded from cytosol by the ER membrane and the tightly sealed ribosome-translocon junction (RTJ). How this junction is breached to enable access of cytosolic UPS machinery and 26S proteasomes to translocon- and ribosome-obstructing ER-APs is not known. Here, we show that UPS and RQC-dependent degradation of ER-APs strictly requires conjugation of the ubiquitin-like (Ubl) protein UFM1 to 60S ribosomal subunits at the RTJ. Therefore, UFMylation of translocon-bound 60S subunits modulates the RTJ to promote access of proteasomes and RQC machinery to ER-APs.
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Affiliation(s)
| | - Samantha C. Gumbin
- Department of Molecular and Cellular Physiology, Stanford University School of Medicine, Stanford, CA94305
| | - Paul A. Da Rosa
- Department of Biology, Stanford University, Stanford, CA94305
| | - Ron R. Kopito
- Department of Biology, Stanford University, Stanford, CA94305
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21
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Mendoza-Viveros L, Marmolejo-Gutierrez C, Cid-Castro C, Escalante-Covarrubias Q, Montellier E, Carreño-Vázquez E, Noriega LG, Velázquez-Villegas LA, Tovar AR, Sassone-Corsi P, Aguilar-Arnal L, Orozco-Solis R. Astrocytic circadian clock control of energy expenditure by transcriptional stress responses in the ventromedial hypothalamus. Glia 2023; 71:1626-1647. [PMID: 36919670 DOI: 10.1002/glia.24360] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2022] [Revised: 02/28/2023] [Accepted: 03/04/2023] [Indexed: 03/16/2023]
Abstract
Hypothalamic circuits compute systemic information to control metabolism. Astrocytes residing within the hypothalamus directly sense nutrients and hormones, integrating metabolic information, and modulating neuronal responses. Nevertheless, the role of the astrocytic circadian clock on the control of energy balance remains unclear. We used mice with a targeted ablation of the core-clock gene Bmal1 within Gfap-expressing astrocytes to gain insight on the role played by this transcription factor in astrocytes. While this mutation does not substantially affect the phenotype in mice fed normo-caloric diet, under high-fat diet we unmasked a thermogenic phenotype consisting of increased energy expenditure, and catabolism in brown adipose and overall metabolic improvement consisting of better glycemia control, and body composition. Transcriptomic analysis in the ventromedial hypothalamus revealed an enhanced response to moderate cellular stress, including ER-stress response, unfolded protein response and autophagy. We identified Xbp1 and Atf1 as two key transcription factors enhancing cellular stress responses. Therefore, we unveiled a previously unknown role of the astrocytic circadian clock modulating energy balance through the regulation of cellular stress responses within the VMH.
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Affiliation(s)
- Lucia Mendoza-Viveros
- Instituto Nacional de Medicina Genómica (INMEGEN), México City, Mexico
- Instituto de Investigaciones Biomédicas, Universidad Nacional Autónoma de México UNAM, México City, Mexico
- Centro de Investigación sobre el Envejecimiento, Centro de Investigación y de Estudios Avanzados (CIE-CINVESTAV), México City, México
| | | | - Carolina Cid-Castro
- Instituto Nacional de Medicina Genómica (INMEGEN), México City, Mexico
- Instituto de Investigaciones Biomédicas, Universidad Nacional Autónoma de México UNAM, México City, Mexico
- Centro de Investigación sobre el Envejecimiento, Centro de Investigación y de Estudios Avanzados (CIE-CINVESTAV), México City, México
| | | | | | | | - Lilia G Noriega
- Instituto Nacional de Ciencias Médicas y Nutrición Salvador Zubirán, Mexico City, Mexico
| | | | - Armando R Tovar
- Instituto Nacional de Ciencias Médicas y Nutrición Salvador Zubirán, Mexico City, Mexico
| | | | - Lorena Aguilar-Arnal
- Instituto de Investigaciones Biomédicas, Universidad Nacional Autónoma de México UNAM, México City, Mexico
| | - Ricardo Orozco-Solis
- Instituto Nacional de Medicina Genómica (INMEGEN), México City, Mexico
- Centro de Investigación sobre el Envejecimiento, Centro de Investigación y de Estudios Avanzados (CIE-CINVESTAV), México City, México
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22
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Zhou J, Ma X, He X, Chen B, Yuan J, Jin Z, Li L, Wang Z, Xiao Q, Cai Y, Zou Y. Dysregulation of PD-L1 by UFMylation imparts tumor immune evasion and identified as a potential therapeutic target. Proc Natl Acad Sci U S A 2023; 120:e2215732120. [PMID: 36893266 PMCID: PMC10089188 DOI: 10.1073/pnas.2215732120] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2022] [Accepted: 01/18/2023] [Indexed: 03/11/2023] Open
Abstract
Immunotherapy of PD-L1/PD-1 blockage elicited impressive clinical benefits for cancer treatment. However, the relative low response and therapy resistance highlight the need to better understand the molecular regulation of PD-L1 in tumors. Here, we report that PD-L1 is a target of UFMylation. UFMylation of PD-L1 destabilizes PD-L1 by synergizing its ubiquitination. Inhibition of PD-L1 UFMylation via silencing of UFL1 or Ubiquitin-fold modifier 1 (UFM1), or the defective UFMylation of PD-L1, stabilizes the PD-L1 in multiple human and murine cancer cells, and undermines antitumor immunity in vitro and mice, respectively. Clinically, UFL1 expression was decreased in multiple cancers and lower expression of UFL1 negatively correlated with the response of anti-PD1 therapy in melanoma patients. Moreover, we identified a covalent inhibitor of UFSP2 that promoted the UFMylation activity and contributed to the combination therapy with PD-1 blockade. Our findings identified a previously unrecognized regulator of PD-L1 and highlighted UFMylation as a potential therapeutic target.
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Affiliation(s)
- Junzhi Zhou
- School of Basic Medicine, Hangzhou Normal University, Hangzhou311121, China
| | - Xiaohe Ma
- School of Basic Medicine, Hangzhou Normal University, Hangzhou311121, China
| | - Xingrui He
- School of Pharmacy, Hangzhou Normal University, Hangzhou311121, China
| | - Beiying Chen
- School of Basic Medicine, Hangzhou Normal University, Hangzhou311121, China
| | - Jiao Yuan
- GMU-GIBH Joint School of Life Sciences, Guangzhou Laboratory, Guangzhou Medical University, Guangzhou510005, China
| | - Zhemin Jin
- Yongkang Maternity and Child Care hospital, Yongkang321300, China
| | - Lijing Li
- Yongkang Maternity and Child Care hospital, Yongkang321300, China
| | - Zhiguo Wang
- School of Basic Medicine, Hangzhou Normal University, Hangzhou311121, China
| | - Qian Xiao
- Rutgers Cancer Institute of New Jersey, New Jersey, NJ08901
| | - Yafei Cai
- College of Animal Science and Technology, Nanjing Agricultural University, Nanjing210095, China
| | - Yongkang Zou
- Institute of Cancer Research, Shenzhen Bay Laboratory, Shenzhen518107, China
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23
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Scavone F, Gumbin SC, DaRosa PA, Kopito RR. RPL26/uL24 UFMylation is essential for ribosome-associated quality control at the endoplasmic reticulum. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2023:2023.03.08.531792. [PMID: 36945571 PMCID: PMC10028864 DOI: 10.1101/2023.03.08.531792] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/18/2023]
Abstract
Ribosomes that stall while translating cytosolic proteins are incapacitated by incomplete nascent chains, termed "arrest peptides" (APs) that are destroyed by the ubiquitin proteasome system (UPS) via a process known as the ribosome-associated quality control (RQC) pathway. By contrast, APs on ribosomes that stall while translocating secretory proteins into the endoplasmic reticulum (ER-APs) are shielded from cytosol by the ER membrane and the tightly sealed ribosome-translocon junction (RTJ). How this junction is breached to enable access of cytosolic UPS machinery and 26S proteasomes to translocon- and ribosome-obstructing ER-APs is not known. Here, we show that UPS and RQC-dependent degradation of ER-APs strictly requires conjugation of the ubiquitin-like (Ubl) protein UFM1 to 60S ribosomal subunits at the RTJ. Therefore, UFMylation of translocon-bound 60S subunits modulates the RTJ to promote access of proteasomes and RQC machinery to ER-APs. Significance Statement UFM1 is a ubiquitin-like protein that is selectively conjugated to the large (60S) subunit of ribosomes bound to the endoplasmic reticulum (ER), but the specific biological function of this modification is unclear. Here, we show that UFMylation facilitates proteasome-mediated degradation of arrest polypeptides (APs) which are generated following splitting of ribosomes that stall during co-translational translocation of secretory proteins into the ER. We propose that UFMylation weakens the tightly sealed ribosome-translocon junction, thereby allowing the cytosolic ubiquitin-proteasome and ribosome-associated quality control machineries to access ER-APs.
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Affiliation(s)
| | - Samantha C Gumbin
- Department of Molecular and Cellular Physiology, Stanford School of Medicine, Stanford CA, 94305
| | - Paul A DaRosa
- Department of Biology, Stanford University, Stanford CA, 94305
| | - Ron R Kopito
- Department of Biology, Stanford University, Stanford CA, 94305
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24
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Ufmylation reconciles salt stress-induced unfolded protein responses via ER-phagy in Arabidopsis. Proc Natl Acad Sci U S A 2023; 120:e2208351120. [PMID: 36696447 PMCID: PMC9945950 DOI: 10.1073/pnas.2208351120] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023] Open
Abstract
In plants, the endomembrane system is tightly regulated in response to environmental stresses for maintaining cellular homeostasis. Autophagosomes, the double membrane organelles forming upon nutrient deprivation or stress induction, degrade bulky cytosolic materials for nutrient turnover. Though abiotic stresses have been reported to induce plant autophagy, few receptors or regulators for selective autophagy have been characterized for specific stresses. Here, we have applied immunoprecipitation followed by tandem mass spectrometry using the autophagosome marker protein ATG8 as bait and have identified the E3 ligase of the ufmylation system Ufl1 as a bona fide ATG8 interactor under salt stress. Notably, core components in the ufmylation cascade, Ufl1 and Ufm1, interact with the autophagy kinase complexes proteins ATG1 and ATG6. Cellular and genetic analysis showed that Ufl1 is important for endoplasmic reticulum (ER)-phagy under persisting salt stress. Loss-of-function mutants of Ufl1 display a salt stress hypersensitive phenotype and abnormal ER morphology. Prolonged ER stress responses are detected in ufl1 mutants that phenocopy the autophagy dysfunction atg5 mutants. Consistently, expression of ufmylation cascade components is up-regulated by salt stress. Taken together, our study demonstrates the role of ufmylation in regulating ER homeostasis under salt stress through ER-phagy.
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25
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Song JX, Villagomes D, Zhao H, Zhu M. cGAS in nucleus: The link between immune response and DNA damage repair. Front Immunol 2022; 13:1076784. [PMID: 36591232 PMCID: PMC9797516 DOI: 10.3389/fimmu.2022.1076784] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2022] [Accepted: 11/24/2022] [Indexed: 12/23/2022] Open
Abstract
As the first barrier of host defense, innate immunity sets up the parclose to keep out external microbial or virus attacks. Depending on the type of pathogens, several cytoplasm pattern recognition receptors exist to sense the attacks from either foreign or host origins, triggering the immune response to battle with the infections. Among them, cGAS-STING is the major pathway that mainly responds to microbial DNA, DNA virus infections, or self-DNA, which mainly comes from genome instability by-product or released DNA from the mitochondria. cGAS was initially found functional in the cytoplasm, although intriguing evidence indicates that cGAS exists in the nucleus where it is involved in the DNA damage repair process. Because the close connection between DNA damage response and immune response and cGAS recognizes DNA in length-dependent but DNA sequence-independent manners, it is urgent to clear the function balance of cGAS in the nucleus versus cytoplasm and how it is shielded from recognizing the host origin DNA. Here, we outline the current conception of immune response and the regulation mechanism of cGAS in the nucleus. Furthermore, we will shed light on the potential mechanisms that are restricted to be taken away from self-DNA recognition, especially how post-translational modification regulates cGAS functions.
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Affiliation(s)
- Jia-Xian Song
- Institute for Translation Medicine, The Affiliated Hospital of Qingdao University, College of Medicine, Qingdao University, Qingdao, China
| | - Deana Villagomes
- Department of Molecular and Cellular Biology, University of California Davis, One Shields Avenue, Davis, CA, United States
| | - Hongchang Zhao
- Department of Microbiology and Molecular Genetics, University of California Davis, One Shields Avenue, Davis, CA, United States
| | - Min Zhu
- Institute for Translation Medicine, The Affiliated Hospital of Qingdao University, College of Medicine, Qingdao University, Qingdao, China,*Correspondence: Min Zhu,
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26
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Chen HS, Wang J, Li HH, Wang X, Zhang SQ, Deng T, Li YK, Zou RS, Wang HJ, Zhu R, Xie WL, Zhao G, Wang F, Chen JG. Long noncoding RNA Gm2694 drives depressive-like behaviors in male mice by interacting with GRP78 to disrupt endoplasmic reticulum homeostasis. SCIENCE ADVANCES 2022; 8:eabn2496. [PMID: 36459549 PMCID: PMC10936050 DOI: 10.1126/sciadv.abn2496] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/14/2021] [Accepted: 10/18/2022] [Indexed: 06/17/2023]
Abstract
Long noncoding RNAs (lncRNAs) are involved in various biological processes and implicated in the regulation of neuronal activity, but the potential role of lncRNAs in depression remains largely unknown. Here, we identified that lncRNA Gm2694 was increased in the medial prefrontal cortex (mPFC) of male mice subjected to chronic social defeat stress (CSDS). The down-regulation of Gm2694 in the mPFC alleviated CSDS-induced depressive-like behaviors through enhanced excitatory synaptic transmission. Furthermore, we found that Gm2694 preferentially interacted with the carboxyl-terminal domain of 78-kilodalton glucose-regulated protein (GRP78), which abrogated GRP78 function and disrupted endoplasmic reticulum homeostasis, resulting in a reduction of the surface expression of AMPA receptors (AMPARs). Overexpression of GRP78 in the mPFC promoted the surface expression of AMPARs and attenuated the CSDS-induced depressive-like behaviors of mice. Together, our results unraveled a previously unknown role of Gm2694 in regulating endoplasmic reticulum homeostasis and excitatory synaptic transmission in depression.
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Affiliation(s)
- Hong-Sheng Chen
- Department of Pharmacology, School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology, 430030 Wuhan, China
- The Research Center for Depression, Tongji Medical College, Huazhong University of Science, 430030 Wuhan, China
- The Key Laboratory for Drug Target Researches and Pharmacodynamic Evaluation of Hubei Province, 430030 Wuhan, China
| | - Ji Wang
- Department of Pharmacology, School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology, 430030 Wuhan, China
| | - Hou-Hong Li
- Department of Pharmacology, School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology, 430030 Wuhan, China
| | - Xiao Wang
- Department of Pharmacology, School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology, 430030 Wuhan, China
| | - Shao-Qi Zhang
- Department of Pharmacology, School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology, 430030 Wuhan, China
| | - Tan Deng
- Department of Pharmacology, School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology, 430030 Wuhan, China
| | - Yu-Ke Li
- Department of Pharmacology, School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology, 430030 Wuhan, China
| | - Ruo-Si Zou
- Department of Pharmacology, School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology, 430030 Wuhan, China
| | - Hua-Jie Wang
- Department of Pharmacology, School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology, 430030 Wuhan, China
| | - Rui Zhu
- Department of Pharmacology, School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology, 430030 Wuhan, China
| | - Wen-Long Xie
- Department of Pharmacology, School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology, 430030 Wuhan, China
| | - Gang Zhao
- Department of Emergency Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, 430022 Wuhan, China
| | - Fang Wang
- Department of Pharmacology, School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology, 430030 Wuhan, China
- The Research Center for Depression, Tongji Medical College, Huazhong University of Science, 430030 Wuhan, China
- The Key Laboratory for Drug Target Researches and Pharmacodynamic Evaluation of Hubei Province, 430030 Wuhan, China
- The Key Laboratory of Neurological Diseases (HUST), Ministry of Education of China, 430030 Wuhan, China
- Laboratory of Neuropsychiatric Diseases, The Institute of Brain Research, Huazhong University of Science and Technology, 430030 Wuhan, China
| | - Jian-Guo Chen
- Department of Pharmacology, School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology, 430030 Wuhan, China
- The Research Center for Depression, Tongji Medical College, Huazhong University of Science, 430030 Wuhan, China
- The Key Laboratory for Drug Target Researches and Pharmacodynamic Evaluation of Hubei Province, 430030 Wuhan, China
- The Key Laboratory of Neurological Diseases (HUST), Ministry of Education of China, 430030 Wuhan, China
- Laboratory of Neuropsychiatric Diseases, The Institute of Brain Research, Huazhong University of Science and Technology, 430030 Wuhan, China
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27
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Ilic D, Magnussen HM, Tirard M. Stress - Regulation of SUMO conjugation and of other Ubiquitin-Like Modifiers. Semin Cell Dev Biol 2022; 132:38-50. [PMID: 34996712 DOI: 10.1016/j.semcdb.2021.12.010] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2021] [Revised: 12/22/2021] [Accepted: 12/23/2021] [Indexed: 12/14/2022]
Abstract
Stress is unavoidable and essential to cellular and organismal evolution and failure to adapt or restore homeostasis can lead to severe diseases or even death. At the cellular level, stress drives a plethora of molecular changes, of which variations in the profile of protein post-translational modifications plays a key role in mediating the adaptative response of the genome and proteome to stress. In this context, post-translational modification of proteins by ubiquitin-like modifiers, (Ubl), notably SUMO, is an essential stress response mechanism. In this review, aiming to draw universal concepts of the Ubls stress response, we will decipher how stress alters the expression level, activity, specificity and/or localization of the proteins involved in the conjugation pathways of the various type-I Ubls, and how this result in the modification of particular Ubl targets that will translate an adaptive physiological stress response and allow cells to restore homeostasis.
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Affiliation(s)
- Dragana Ilic
- Department of Epigenetics, Max Planck Institute of Immunobiology and Epigenetics, D-79108 Freiburg; Faculty of Biology, University of Freiburg, D-79104 Freiburg; Department of Molecular Neurobiology, Max Planck Institute of Experimental Medicine, D-37075 Göttingen
| | - Helge M Magnussen
- MRC Protein Phosphorylation and Ubiquitination Unit, Sir James Black Center, School of Life Sciences, University of Dundee, Dundee, Scotland, UK
| | - Marilyn Tirard
- Department of Molecular Neurobiology, Max Planck Institute of Experimental Medicine, D-37075 Göttingen.
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28
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Sargin P, Roethle MF, Jia S, Pant T, Ciecko AE, Atkinson SN, Salzman NH, Teng RJ, Chen YG, Cabrera SM, Hessner MJ. Lactiplantibacillus plantarum 299v supplementation modulates β-cell ER stress and antioxidative defense pathways and prevents type 1 diabetes in gluten-free BioBreeding rats. Gut Microbes 2022; 14:2136467. [PMID: 36261888 PMCID: PMC9586621 DOI: 10.1080/19490976.2022.2136467] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/04/2023] Open
Abstract
The increasing incidence of Type 1 diabetes has coincided with the emergence of the low-fiber, high-gluten Western diet and other environmental factors linked to dysbiosis. Since Lactiplantibacillus plantarum 299 v (Lp299v) supplementation improves gut barrier function and reduces systemic inflammation, we studied its effects in spontaneously diabetic DRlyp/lyp rats provided a normal cereal diet (ND) or a gluten-free hydrolyzed casein diet (HCD). All rats provided ND developed diabetes (62.5±7.7 days); combining ND with Lp299v did not improve survival. Diabetes was delayed by HCD (72.2±9.4 days, p = .01) and further delayed by HCD+Lp299v (84.9±14.3 days, p < .001). HCD+Lp299v pups exhibited increased plasma propionate and butyrate levels, which correlated with enriched fecal Bifidobacteriaceae and Clostridiales taxa. Islet transcriptomic and histologic analyses at 40-days of age revealed that rats fed HCD expressed an autophagy profile, while those provided HCD+Lp299v expressed ER-associated protein degradation (ERAD) and antioxidative defense pathways, including Nrf2. Exposing insulinoma cells to propionate and butyrate promoted the antioxidative defense response but did not recapitulate the HCD+Lp299v islet ERAD transcriptomic profile. Here, both diet and microbiota influenced diabetes susceptibility. Moreover, Lp299v supplement modulated antioxidative defense and ER stress responses in β-cells, potentially offering a new therapeutic direction to thwart diabetes progression and preserve insulin secretion.
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Affiliation(s)
- Pinar Sargin
- The Max McGee Research Center for Juvenile Diabetes, Children’s Research Institute of Children’s Hospital of Wisconsin, Milwaukee, WI, USA,Department of Pediatrics, Division of Endocrinology, the Medical College of Wisconsin, Milwaukee, WI, USA
| | - Mark F. Roethle
- The Max McGee Research Center for Juvenile Diabetes, Children’s Research Institute of Children’s Hospital of Wisconsin, Milwaukee, WI, USA,Department of Pediatrics, Division of Endocrinology, the Medical College of Wisconsin, Milwaukee, WI, USA
| | - Shuang Jia
- The Max McGee Research Center for Juvenile Diabetes, Children’s Research Institute of Children’s Hospital of Wisconsin, Milwaukee, WI, USA,Department of Pediatrics, Division of Endocrinology, the Medical College of Wisconsin, Milwaukee, WI, USA
| | - Tarun Pant
- The Max McGee Research Center for Juvenile Diabetes, Children’s Research Institute of Children’s Hospital of Wisconsin, Milwaukee, WI, USA,Department of Pediatrics, Division of Endocrinology, the Medical College of Wisconsin, Milwaukee, WI, USA
| | - Ashley E. Ciecko
- The Max McGee Research Center for Juvenile Diabetes, Children’s Research Institute of Children’s Hospital of Wisconsin, Milwaukee, WI, USA,Department of Pediatrics, Division of Endocrinology, the Medical College of Wisconsin, Milwaukee, WI, USA
| | - Samantha N. Atkinson
- Center for Microbiome Research, Medical College of Wisconsin, Milwaukee, WI, USA,Department of Microbiology & Immunology, Medical College of Wisconsin, Milwaukee, WI, USA
| | - Nita H. Salzman
- Center for Microbiome Research, Medical College of Wisconsin, Milwaukee, WI, USA,Department of Microbiology & Immunology, Medical College of Wisconsin, Milwaukee, WI, USA,Department of Pediatrics, Division of Gastroenterology, the Medical College of Wisconsin, Milwaukee, WI, USA
| | - Ru-Jeng Teng
- Department of Pediatrics, Division of Neonatology, the Medical College of Wisconsin, Milwaukee, WI, USA
| | - Yi-Guang Chen
- The Max McGee Research Center for Juvenile Diabetes, Children’s Research Institute of Children’s Hospital of Wisconsin, Milwaukee, WI, USA,Department of Pediatrics, Division of Endocrinology, the Medical College of Wisconsin, Milwaukee, WI, USA
| | - Susanne M. Cabrera
- The Max McGee Research Center for Juvenile Diabetes, Children’s Research Institute of Children’s Hospital of Wisconsin, Milwaukee, WI, USA,Department of Pediatrics, Division of Endocrinology, the Medical College of Wisconsin, Milwaukee, WI, USA
| | - Martin J. Hessner
- The Max McGee Research Center for Juvenile Diabetes, Children’s Research Institute of Children’s Hospital of Wisconsin, Milwaukee, WI, USA,Department of Pediatrics, Division of Endocrinology, the Medical College of Wisconsin, Milwaukee, WI, USA,CONTACT Martin J. Hessner The Max McGee Research Center for Juvenile Diabetes, Children’s Research Institute of Children’s Hospital of Wisconsin, Milwaukee, WI, USA; Department of Pediatrics, Division of Endocrinology, the Medical College of Wisconsin, Milwaukee, WI, USA
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Peter JJ, Magnussen HM, DaRosa PA, Millrine D, Matthews SP, Lamoliatte F, Sundaramoorthy R, Kopito RR, Kulathu Y. A non-canonical scaffold-type E3 ligase complex mediates protein UFMylation. EMBO J 2022; 41:e111015. [PMID: 36121123 DOI: 10.15252/embj.2022111015] [Citation(s) in RCA: 27] [Impact Index Per Article: 13.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2022] [Revised: 08/25/2022] [Accepted: 08/29/2022] [Indexed: 11/09/2022] Open
Abstract
Protein UFMylation, i.e., post-translational modification with ubiquitin-fold modifier 1 (UFM1), is essential for cellular and endoplasmic reticulum homeostasis. Despite its biological importance, we have a poor understanding of how UFM1 is conjugated onto substrates. Here, we use a rebuilding approach to define the minimal requirements of protein UFMylation. We find that the reported cognate E3 ligase UFL1 is inactive on its own and instead requires the adaptor protein UFBP1 to form an active E3 ligase complex. Structure predictions suggest the UFL1/UFBP1 complex to be made up of winged helix (WH) domain repeats. We show that UFL1/UFBP1 utilizes a scaffold-type E3 ligase mechanism that activates the UFM1-conjugating E2 enzyme, UFC1, for aminolysis. Further, we characterize a second adaptor protein CDK5RAP3 that binds to and forms an integral part of the ligase complex. Unexpectedly, we find that CDK5RAP3 inhibits UFL1/UFBP1 ligase activity in vitro. Results from reconstituting ribosome UFMylation suggest that CDK5RAP3 functions as a substrate adaptor that directs UFMylation to the ribosomal protein RPL26. In summary, our reconstitution approach reveals the biochemical basis of UFMylation and regulatory principles of this atypical E3 ligase complex.
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Affiliation(s)
- Joshua J Peter
- Medical Research Council Protein Phosphorylation & Ubiquitylation Unit (MRC-PPU), School of Life Sciences, University of Dundee, Dundee, UK
| | - Helge M Magnussen
- Medical Research Council Protein Phosphorylation & Ubiquitylation Unit (MRC-PPU), School of Life Sciences, University of Dundee, Dundee, UK
| | - Paul A DaRosa
- Department of Biology, Stanford University, Stanford, CA, USA
| | - David Millrine
- Medical Research Council Protein Phosphorylation & Ubiquitylation Unit (MRC-PPU), School of Life Sciences, University of Dundee, Dundee, UK
| | - Stephen P Matthews
- Medical Research Council Protein Phosphorylation & Ubiquitylation Unit (MRC-PPU), School of Life Sciences, University of Dundee, Dundee, UK
| | - Frederic Lamoliatte
- Medical Research Council Protein Phosphorylation & Ubiquitylation Unit (MRC-PPU), School of Life Sciences, University of Dundee, Dundee, UK
| | | | - Ron R Kopito
- Department of Biology, Stanford University, Stanford, CA, USA
| | - Yogesh Kulathu
- Medical Research Council Protein Phosphorylation & Ubiquitylation Unit (MRC-PPU), School of Life Sciences, University of Dundee, Dundee, UK
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UFMylation System: An Emerging Player in Tumorigenesis. Cancers (Basel) 2022; 14:cancers14143501. [PMID: 35884562 PMCID: PMC9323365 DOI: 10.3390/cancers14143501] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2022] [Revised: 07/08/2022] [Accepted: 07/16/2022] [Indexed: 11/16/2022] Open
Abstract
Simple Summary The ubiquitin-fold modifier 1 (UFM1) is a newly identified post-translational modification protein that has been implicated in multiple cellular processes and diseases. Noticeably, an aberrant UFM1 modification system has been closely related to various types of tumorigeneses, implying that the restoration of UFMylation homeostasis may serve as a promising therapeutic strategy. In this review, we summarize the structure, process and biological functions of the UFM1 modification system. In particular, we discuss the relationship between the UFMylation system and tumorigenesis, illustrating the underlying mechanisms and future perspectives. This article aims to improve our understanding of UFM1 modification, as well as provide some new strategies for cancer treatment. Abstract Ubiquitin-fold modifier 1 (UFM1), a newly identified ubiquitin-like molecule (UBLs), is evolutionarily expressed in multiple species except yeast. Similarly to ubiquitin, UFM1 is covalently attached to its substrates through a well-orchestrated three-step enzymatic reaction involving E1, the UFM1-activating enzyme (ubiquitin-like modifier-activating enzyme 5, UBA5); E2, the UFM1-conjugating enzyme 1 (UFC1); and E3, the UFM1-specific ligase 1 (UFL1). To date, numerous studies have shown that UFM1 modification is implicated in various cellular processes, including endoplasmic reticulum (ER) stress, DNA damage response and erythroid development. An abnormal UFM1 cascade is closely related to a variety of diseases, especially tumors. Herein, we summarize the process and functions of UFM1 modification, illustrating the relationship and mechanisms between aberrant UFMylation and diversified tumors, aiming to provide novel diagnostic biomarkers or therapeutic targets for cancer treatments.
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Tang X, Dong H, Fang Z, Li J, Yang Q, Yao T, Pan Z. Ubiquitin-like modifier 1 ligating enzyme 1 relieves cisplatin-induced premature ovarian failure by reducing endoplasmic reticulum stress in granulosa cells. Reprod Biol Endocrinol 2022; 20:84. [PMID: 35610622 PMCID: PMC9128268 DOI: 10.1186/s12958-022-00956-9] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/22/2021] [Accepted: 05/14/2022] [Indexed: 11/30/2022] Open
Abstract
BACKGROUND Ubiquitin-like modifier 1 ligating enzyme 1 (UFL1), the ligase of the UFMylation system, has recently been reported to be involved in apoptosis and endoplasmic reticulum stress (ER stress) in a variety of diseases. Premature ovarian failure (POF) is a gynecological disease that severely reduces the fertility of women, especially in female cancer patients receiving chemotherapy drugs. Whether UFL1 is involved in protection against chemotherapy-induced POF and its mechanism remain unclear. METHODS In this study, we examined the function of UFL1 in ovarian dysfunction and granulosa cell (GC) apoptosis induced by cisplatin through histological examination and cell viability analysis. We used western blotting, quantitative real-time PCR (qPCR) and immunofluorescence (IF) to detect the expression of UFL1 and the levels of ER stress specific markers. Enzyme linked immunosorbent assays were used to detect the levels of follicle-stimulating hormone (FSH) and estrogen (E2) in ovaries and GCs. In addition, we used infection with lentiviral particle suspensions to knock down and overexpress UFL1 in ovaries and GCs, respectively. RESULTS Our data showed that the expression of UFL1 was reduced in POF model ovaries, accompanied by ER stress. In vitro, cisplatin induced a stress-related increase in UFL1 expression in GCs and enhanced ER stress, which was aggravated by UFL1 knockdown and alleviated by UFL1 overexpression. Furthermore, UFL1 knockdown resulted in a decrease in ovarian follicle number, an increase in atretic follicles, and decreased expression of AMH and FSHR. Conversely, the overexpression of UFL1 reduced cisplatin-induced damage to the ovary in vitro. CONCLUSIONS Our research indicated that UFL1 regulates cisplatin-induced ER stress and apoptosis in GCs, and participates in protection against cisplatin-induced POF, providing a potential therapeutic target for the clinical prevention of chemotherapeutic drug-induced POF.
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Affiliation(s)
- Xiangting Tang
- Basic Medical College, Nanchang University, Nanchang, 330006, China
| | - Hao Dong
- The First Affiliated Hospital of Nanchang University, Nanchang, 330006, China
| | - Zhi Fang
- The First Affiliated Hospital of Nanchang University, Nanchang, 330006, China
| | - Jingyi Li
- Basic Medical College, Nanchang University, Nanchang, 330006, China
| | - Qi Yang
- Basic Medical College, Nanchang University, Nanchang, 330006, China
| | - Ting Yao
- Basic Medical College, Nanchang University, Nanchang, 330006, China
| | - Zezheng Pan
- Basic Medical College, Nanchang University, Nanchang, 330006, China.
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Choi S, Engelke R, Goswami N, Schmidt F. Proteomic profiling of metformin effects in 3T3-L1 adipocytes by SILAC-based quantification. Proteomics 2022; 22:e2100196. [PMID: 35275438 DOI: 10.1002/pmic.202100196] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2021] [Revised: 02/27/2022] [Accepted: 03/04/2022] [Indexed: 11/12/2022]
Abstract
Metformin is a common and generally the first medication prescribed for treatment of type 2 diabetes. Its mechanism involves affecting pathways that regulate glucose and lipid metabolism in metabolic cells such as that of muscle and liver cells. In spite of various studies exploring its effects, the proteome changes in adipocytes in response to metformin remains poorly understood. In this study, we performed SILAC-based quantitative proteomic profiling to study the effects of metformin specifically on 3T3-L1 adipocytes. We define proteins that exhibited altered levels with metformin treatment, 400 of them showing statistically significant changes in our study. Our results suggest that metformin affects not only the PPARγ signaling pathway, as well as glucose and lipid metabolism, but also protein folding, endoplasmic reticulum stress, negative regulation of appetite, and one-carbon folate metabolism in adipocytes. This proteomic investigation provides important insight into effects of metformin in adipocytes. This article is protected by copyright. All rights reserved.
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Affiliation(s)
- Sunkyu Choi
- Proteomics Core, Weill Cornell Medicine-Qatar, Qatar Foundation - Education City, Doha, PO 24144, Qatar
| | - Rudolf Engelke
- Proteomics Core, Weill Cornell Medicine-Qatar, Qatar Foundation - Education City, Doha, PO 24144, Qatar
| | - Neha Goswami
- Proteomics Core, Weill Cornell Medicine-Qatar, Qatar Foundation - Education City, Doha, PO 24144, Qatar
| | - Frank Schmidt
- Proteomics Core, Weill Cornell Medicine-Qatar, Qatar Foundation - Education City, Doha, PO 24144, Qatar
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Zhou Z, Wang Q, Michalak M. Inositol Requiring Enzyme (IRE), a multiplayer in sensing endoplasmic reticulum stress. Anim Cells Syst (Seoul) 2022; 25:347-357. [PMID: 35059134 PMCID: PMC8765250 DOI: 10.1080/19768354.2021.2020901] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023] Open
Affiliation(s)
- Zhixin Zhou
- Department of Biochemistry, University of Alberta, Edmonton, Canada
| | - Qian Wang
- Department of Biochemistry, University of Alberta, Edmonton, Canada
| | - Marek Michalak
- Department of Biochemistry, University of Alberta, Edmonton, Canada
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Cheng Y, Niu Z, Cai Y, Zhang W. Emerging role of UFMylation in secretory cells involved in the endocrine system by maintaining ER proteostasis. Front Endocrinol (Lausanne) 2022; 13:1085408. [PMID: 36743909 PMCID: PMC9894094 DOI: 10.3389/fendo.2022.1085408] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/31/2022] [Accepted: 12/13/2022] [Indexed: 01/21/2023] Open
Abstract
Ubiquitin-fold modifier 1 (UFM1) is a ubiquitin-like molecule (UBL) discovered almost two decades ago, but our knowledge about the cellular and molecular mechanisms of this novel protein post-translational modification is still very fragmentary. In this review, we first summarize the core enzymes and factors involved in the UFMylation cascade, which, similar to ubiquitin, is consecutively catalyzed by UFM1-activating enzyme 5 (UBA5), UFM1-conjugating enzyme 1 (UFC1) and UFM1-specific ligase 1 (UFL1). Inspired by the substantial implications of UFM1 machinery in the secretory pathway, we next concentrate on the puzzling role of UFMylation in maintaining ER protein homeostasis, intending to illustrate the underlying mechanisms and future perspectives. At last, given a robust ER network is a hallmark of healthy endocrine secretory cells, we emphasize the function of UFM1 modification in physiology and pathology in the context of endocrine glands pancreas and female ovaries, aiming to provide precise insight into other internal glands of the endocrine system.
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Affiliation(s)
- Yun Cheng
- Jiangsu Cancer Hospital, Jiangsu Institute of Cancer Research, The Affiliated Cancer Hospital of Nanjing Medical University, Nanjing, China
| | - Zikang Niu
- College of Animal Science and Technology, Nanjing Agricultural University, Nanjing, China
| | - Yafei Cai
- College of Animal Science and Technology, Nanjing Agricultural University, Nanjing, China
| | - Wei Zhang
- College of Animal Science and Technology, Nanjing Agricultural University, Nanjing, China
- *Correspondence: Wei Zhang,
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Zhou J, Ma X, Xu L, Liang Q, Mao J, Liu J, Wang M, Yuan J, Cong YS. Genomic profiling of the UFMylation family genes identifies UFSP2 as a potential tumour suppressor in colon cancer. Clin Transl Med 2021; 11:e642. [PMID: 34923774 PMCID: PMC8684770 DOI: 10.1002/ctm2.642] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2021] [Revised: 10/20/2021] [Accepted: 10/27/2021] [Indexed: 01/16/2023] Open
Affiliation(s)
- Junzhi Zhou
- Key Laboratory of Aging and Cancer Biology of Zhejiang Province, School of Basic Medicine, Hangzhou Normal University, 2318 Yu hang tang Rd, Hangzhou, Zhejiang, 311121, China
| | - Xiaohe Ma
- Key Laboratory of Aging and Cancer Biology of Zhejiang Province, School of Basic Medicine, Hangzhou Normal University, 2318 Yu hang tang Rd, Hangzhou, Zhejiang, 311121, China
| | - Lu Xu
- Key Laboratory of Aging and Cancer Biology of Zhejiang Province, School of Basic Medicine, Hangzhou Normal University, 2318 Yu hang tang Rd, Hangzhou, Zhejiang, 311121, China
| | - Qian Liang
- Key Laboratory of Aging and Cancer Biology of Zhejiang Province, School of Basic Medicine, Hangzhou Normal University, 2318 Yu hang tang Rd, Hangzhou, Zhejiang, 311121, China
| | - Jian Mao
- Key Laboratory of Aging and Cancer Biology of Zhejiang Province, School of Basic Medicine, Hangzhou Normal University, 2318 Yu hang tang Rd, Hangzhou, Zhejiang, 311121, China
| | - Jiang Liu
- Key Laboratory of Aging and Cancer Biology of Zhejiang Province, School of Basic Medicine, Hangzhou Normal University, 2318 Yu hang tang Rd, Hangzhou, Zhejiang, 311121, China
| | - Miao Wang
- Key Laboratory of Aging and Cancer Biology of Zhejiang Province, School of Basic Medicine, Hangzhou Normal University, 2318 Yu hang tang Rd, Hangzhou, Zhejiang, 311121, China
| | - Jiao Yuan
- Department of Obstetrics and Gynecology, University of Pennsylvania, Philadelphia, Pennsylvania, USA
| | - Yu-Sheng Cong
- Key Laboratory of Aging and Cancer Biology of Zhejiang Province, School of Basic Medicine, Hangzhou Normal University, 2318 Yu hang tang Rd, Hangzhou, Zhejiang, 311121, China
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36
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Sheng L, Li J, Rao S, Yang Z, Huang Y. Cyclin-Dependent Kinase 5 Regulatory Subunit Associated Protein 3: Potential Functions and Implications for Development and Disease. Front Oncol 2021; 11:760429. [PMID: 34722315 PMCID: PMC8551632 DOI: 10.3389/fonc.2021.760429] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2021] [Accepted: 09/27/2021] [Indexed: 12/24/2022] Open
Abstract
Cyclin-dependent kinase 5 (CDK5) regulatory subunit associated protein 3 (CDK5RAP3, also named as C53 or LZAP) was initially identified as a binding protein of CDK5 activator p35. To date, CDK5RAP3 has been reported to interact with a range of proteins involved in cellular events ranging from cell cycle, apoptosis, and invasion to UFMylation modification and endoplasmic reticulum stress. Owing to its crucial roles in cellular processes, CDK5RAP3 is demonstrated to be not only an active participant in embryonic and mammalian tissue development, but also a key regulator in the onset and progress of human cancers such as head and neck squamous cell carcinoma, gastric cancer, hepatocellular cancer, lung cancer, kidney cancer and breast cancer. Notwithstanding, the detailed function of CDK5RAP3 and its mechanism remain poorly defined. Here, we briefly described a history of the discovery of CDK5RAP3, and systematically overviewed its gene structural and distribution features. We also focused on the known functions of this protein and its implications for embryogenesis and tissue development, as well as diseases especially carcinoma. This review may facilitate to understand the molecular and functional basis of CDK5RAP3 and its association with development and disease, and provide a reasonable idea for novel therapeutic opportunities targeting CDK5RAP3.
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Affiliation(s)
- Linna Sheng
- Department of Pathophysiology, Basic Medical College of Nanchang University, Nanchang, China.,Graduate College of Nanchang University, Nanchang, China
| | - Jiaxuan Li
- Nanchang Joint Program, Queen Mary School, Nanchang University, Nanchang, China
| | - Shengfang Rao
- Department of Nuclear Medicine, Nanchang University Hospital, Nanchang, China
| | - Zhijun Yang
- Department of Pathophysiology, Basic Medical College of Nanchang University, Nanchang, China
| | - Yonghong Huang
- Department of Pathophysiology, Basic Medical College of Nanchang University, Nanchang, China
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Abstract
PURPOSE OF REVIEW Hematopoietic stem cells (HSCs) possess the ability to regenerate over a lifetime in the face of extreme cellular proliferation and environmental stress. Yet, mechanisms that control the regenerative properties of HSCs remain elusive. ER stress has emerged as an important signaling event that supports HSC self-renewal and multipotency. The purpose of this review is to summarize the pathways implicating ER stress as cytoprotective in HSCs. RECENT FINDINGS Recent studies have shown multiple signaling cascades of the unfolded protein response (UPR) are persistently activated in healthy HSCs, suggesting that low-dose ER stress is a feature HSCs. Stress adaptation is a feature ascribed to cytoprotection and longevity of cells as well as organisms, in what is known as hormesis. However, assembling this information into useful knowledge to improve the therapeutic application of HSCs remains challenging and the upstream activators and downstream transcriptional programs induced by ER stress that are required in HSCs remain to be discovered. SUMMARY The maintenance of HSCs requires a dose-dependent simulation of ER stress responses that involves persistent, low-dose UPR. Unraveling the complexity of this signaling node may elucidate mechanisms related to regeneration of HSCs that can be harnessed to expand HSCs for cellular therapeutics ex vivo and transplantation in vivo.
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Affiliation(s)
- Larry L Luchsinger
- Lindsley F. Kimball Research Institute, New York Blood Center, New York City, New York, USA
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38
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Lu Y, Ji R, Ye Y, Hua X, Fan J, Xu Y, Shi J, Li YM. Efficient semi-synthesis of ubiquitin-fold modifier 1 (UFM1) derivatives. Tetrahedron Lett 2021. [DOI: 10.1016/j.tetlet.2021.153383] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Genome Profiling of H3k4me3 Histone Modification in Human Adipose Tissue during Obesity and Insulin Resistance. Biomedicines 2021; 9:biomedicines9101363. [PMID: 34680480 PMCID: PMC8533428 DOI: 10.3390/biomedicines9101363] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2021] [Revised: 09/14/2021] [Accepted: 09/17/2021] [Indexed: 01/01/2023] Open
Abstract
Background: Adipose tissue (AT) dysfunction is involved in obesity-related comorbidities. Epigenetic alterations have been recently associated with AT deterioration in obesity conditions. In this work, we profiled the H3K4me3 histone mark in human AT, with special emphasis on the changes in the pattern of histone modification in obesity and insulin resistance (IR). Visceral AT (VAT) was collected and subjected to chromatin immunoprecipitation (ChIP) using anti-H3K4me3 antibody and then sequenced to obtain the H3K4me3 genome profile. Results: We found that most of the H3K4me3 enriched regions were located in gene promoters of pathways related to AT biology and function. H3K4me3 enrichment at gene promoters was strongly related to higher mRNA levels. Differentially expressed genes in AT of patients classified as non-obese, obese with low IR, and obese with high IR could be regulated by differentially enriched H3K4me3; these genes encoded for pathways that could in part explain AT functioning during obesity and insulin resistance (e.g., extracellular matrix organization, PPARG signaling or inflammation). Conclusions: In conclusion, we emphasize the importance of the epigenetic mark H3K4me3 in VAT dysfunction in obesity and IR. The understanding of such mechanisms could give rise to the development of new epigenetic-based pharmacological strategies to ameliorate obesity-related comorbidities.
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40
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Inhibition of UBA5 Expression and Induction of Autophagy in Breast Cancer Cells by Usenamine A. Biomolecules 2021; 11:biom11091348. [PMID: 34572561 PMCID: PMC8469757 DOI: 10.3390/biom11091348] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2021] [Revised: 09/07/2021] [Accepted: 09/10/2021] [Indexed: 12/15/2022] Open
Abstract
Breast cancer is now the most common type of cancer worldwide, surpassing lung cancer. This issue is further worsened by the lack of effective therapies for the disease. Recent reports indicate that the inhibition of ubiquitin-like modifier-activating enzyme 5 (UBA5) can impede tumor development. However, there have been few reports regarding UBA5-inhibiting compounds. This work studied usenamine A, a natural product from the lichen Usnea longissimi that exhibits UBA5-inhibitory effects. Bioinformatics analysis was performed using public databases, and the anti-proliferative ability of usenamine A in breast cancer cells was examined through MTS and colony formation assays. Flow cytometry and western blot analysis were also conducted to examine and analyze cell cycle arrest and apoptosis. In addition, LC3B-RFP and UBA5 expression plasmids were used for the analysis of usenamine A-induced autophagy. According to the bioinformatics analysis results, UBA5 was upregulated in breast cancer. According to in vitro studies, usenamine A displayed prominent anti-proliferative activity and resulted in G2/M phase arrest in MDA-MB-231 cells. Moreover, usenamine A induced autophagy and endoplasmic reticulum stress in MDA-MB-231 cells. In conclusion, the findings support the potential of usenamine A as an agent that can attenuate the development and progression of breast cancer.
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Playfoot CJ, Duc J, Sheppard S, Dind S, Coudray A, Planet E, Trono D. Transposable elements and their KZFP controllers are drivers of transcriptional innovation in the developing human brain. Genome Res 2021; 31:1531-1545. [PMID: 34400477 PMCID: PMC8415367 DOI: 10.1101/gr.275133.120] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2020] [Accepted: 07/15/2021] [Indexed: 11/25/2022]
Abstract
Transposable elements (TEs) account for more than 50% of the human genome and many have been co-opted throughout evolution to provide regulatory functions for gene expression networks. Several lines of evidence suggest that these networks are fine-tuned by the largest family of TE controllers, the KRAB-containing zinc finger proteins (KZFPs). One tissue permissive for TE transcriptional activation (termed "transposcription") is the adult human brain, however comprehensive studies on the extent of this process and its potential contribution to human brain development are lacking. To elucidate the spatiotemporal transposcriptome of the developing human brain, we have analyzed two independent RNA-seq data sets encompassing 16 brain regions from eight weeks postconception into adulthood. We reveal a distinct KZFP:TE transcriptional profile defining the late prenatal to early postnatal transition, and the spatiotemporal and cell type-specific activation of TE-derived alternative promoters driving the expression of neurogenesis-associated genes. Long-read sequencing confirmed these TE-driven isoforms as significant contributors to neurogenic transcripts. We also show experimentally that a co-opted antisense L2 element drives temporal protein relocalization away from the endoplasmic reticulum, suggestive of novel TE dependent protein function in primate evolution. This work highlights the widespread dynamic nature of the spatiotemporal KZFP:TE transcriptome and its importance throughout TE mediated genome innovation and neurotypical human brain development. To facilitate interactive exploration of these spatiotemporal gene and TE expression dynamics, we provide the "Brain TExplorer" web application freely accessible for the community.
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Affiliation(s)
- Christopher J Playfoot
- School of Life Sciences, École Polytechnique Fédérale de Lausanne (EPFL), 1015 Lausanne, Switzerland
| | - Julien Duc
- School of Life Sciences, École Polytechnique Fédérale de Lausanne (EPFL), 1015 Lausanne, Switzerland
| | - Shaoline Sheppard
- School of Life Sciences, École Polytechnique Fédérale de Lausanne (EPFL), 1015 Lausanne, Switzerland
| | - Sagane Dind
- School of Life Sciences, École Polytechnique Fédérale de Lausanne (EPFL), 1015 Lausanne, Switzerland
| | - Alexandre Coudray
- School of Life Sciences, École Polytechnique Fédérale de Lausanne (EPFL), 1015 Lausanne, Switzerland
| | - Evarist Planet
- School of Life Sciences, École Polytechnique Fédérale de Lausanne (EPFL), 1015 Lausanne, Switzerland
| | - Didier Trono
- School of Life Sciences, École Polytechnique Fédérale de Lausanne (EPFL), 1015 Lausanne, Switzerland
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Chen F, Li Y, Ye G, Zhou L, Bian X, Liu J. Development and Validation of a Prognostic Model for Cognitive Impairment in Parkinson's Disease With REM Sleep Behavior Disorder. Front Aging Neurosci 2021; 13:703158. [PMID: 34322014 PMCID: PMC8311737 DOI: 10.3389/fnagi.2021.703158] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2021] [Accepted: 06/21/2021] [Indexed: 12/29/2022] Open
Abstract
The presentation and progression of Parkinson’s disease (PD) are not uniform, but the presence of rapid eye movement sleep behavior disorder (RBD) in PD patients may indicate a worse prognosis than isolated PD. Increasing evidence suggests that patients with comorbid PD and RBD (PD-RBD) are more likely to develop cognitive impairment (CI) than those with isolated PD; however, the predictors of CI in PD-RBD patients are not well understood. This study aimed to develop a prognostic model for predicting mild cognitive impairment (MCI) in PD-RBD patients. The data of PD-RBD patients were extracted from the Parkinson’s Progression Markers Initiative study (PPMI), and the sample was randomly divided into a training set (n = 96) and a validation set (n = 24). PD-MCI as defined by the level II Movement Disorder Society (MDS) diagnostic criteria was the outcome of interest. The demographic features, clinical assessments, dopamine transporter (DAT) imaging data, cerebrospinal fluid (CSF) analyses and genetic data of PD patients were considered candidate predictors. We found that performance on the University of Pennsylvania Smell Identification Test (UPSIT), the mean signal and asymmetry index of the putamen on DAT imaging, p-tau/α-syn and p-tau in CSF, and rs55785911 genotype were predictors of PD-MCI in PD-RBD patients. A C-index of 0.81 was obtained with this model, and a C-index of 0.73 was obtained in the validation set. Favorable results of calibrations and decision curve analysis demonstrated the efficacy and feasibility of this model. In conclusion, we developed a prognostic model for predicting MCI in PD-RBD patients; the model displayed good discrimination and calibration and may be a convenient tool for clinical application. Larger samples and external validation sets are needed to validate this model.
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Affiliation(s)
- Fangzheng Chen
- Department of Neurology and Institute of Neurology, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Yuanyuan Li
- Department of Neurology and Institute of Neurology, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Guanyu Ye
- Department of Neurology and Institute of Neurology, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Liche Zhou
- Department of Neurology and Institute of Neurology, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Xiaolan Bian
- Department of Pharmacy, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Jun Liu
- Department of Neurology and Institute of Neurology, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China.,CAS Center for Excellence in Brain Science and Intelligence Technology, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
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Chen F, Sheng L, Xu C, Li J, Ali I, Li H, Cai Y. Ufbp1, a Key Player of Ufm1 Conjugation System, Protects Against Ketosis-Induced Liver Injury via Suppressing Smad3 Activation. Front Cell Dev Biol 2021; 9:676789. [PMID: 34307359 PMCID: PMC8297976 DOI: 10.3389/fcell.2021.676789] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2021] [Accepted: 06/02/2021] [Indexed: 01/06/2023] Open
Abstract
The dairy cattle suffer from severe liver dysfunction during the pathogenesis of ketosis. The Ufm1 conjugation system is crucial for liver development and homeostasis. Ufm1 binding protein (Ufbp1) is a putative Ufm1 target and an integral component, but its role in ketosis-induced liver injury is unclear so far. The purpose of this study is to explore the key role of Ufbp1 in liver fibrosis caused by ketosis in vivo and in vitro. Liver tissues were collected from ketotic cows and Ufbp1 conditional knockout (CKO) mice in vivo. However, Ufbp1–/– mouse embryonic fibroblast cells and Hela cells were used for in vitro validation. Subsequently, various assays were performed to reveal the underlying molecular mechanisms of the Ufbp1 protective effect. In this study, hepatic fibrosis, endoplasmic reticulum (ER) stress, and apoptosis were reported in the liver of ketotic cows, fibrotic markers (alpha-smooth muscle actin, Collagen1) and ER stress markers (glucose-regulated protein 78, CEBP homologous protein) were upregulated remarkably, and the apoptosis-related genes (Bcl2, Bax) were in line with expectations. Interestingly, Ufbp1 expression was almost disappeared, and Smad2/Smad3 protein was largely phosphorylated in the liver of ketotic cows, but Ufbp1 deletion caused Smad3 phosphorylation apparently, rather than Smad2, and elevated ER stress was observed in the CKO mice model. At the cellular level, Ufbp1 deficiency led to serious fibrotic and ER stress response, Smad3 was activated by phosphorylation significantly and then was translocated into the nucleus, whereas p-Smad2 was largely unaffected in embryonic fibroblast cells. Ufbp1 overexpression obviously suppressed Smad3 phosphorylation in Hela cells. Ufbp1 was found to be in full combination with Smad3 using endogenous immunoprecipitation. Taken together, our findings suggest that downregulation or ablation of Ufbp1 leads to Smad3 activation, elevated ER stress, and hepatocyte apoptosis, which in turn causes liver fibrosis. Ufbp1 plays a protective role in ketosis-induced liver injury.
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Affiliation(s)
- Fanghui Chen
- College of Animal Science and Technology, Nanjing Agricultural University, Nanjing, China
| | - Le Sheng
- College of Animal Science and Technology, Nanjing Agricultural University, Nanjing, China
| | - Chenjie Xu
- College of Animal Science and Technology, Nanjing Agricultural University, Nanjing, China
| | - Jun Li
- College of Life Sciences, Anhui Normal University, Wuhu, China
| | - Ilyas Ali
- College of Animal Science and Technology, Nanjing Agricultural University, Nanjing, China
| | - Honglin Li
- Department of Biochemistry and Molecular Biology, Medical College of Georgia, Augusta University, Augusta, GA, United States
| | - Yafei Cai
- College of Animal Science and Technology, Nanjing Agricultural University, Nanjing, China
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Lemarié M, Chatonnet F, Caron G, Fest T. Early Emergence of Adaptive Mechanisms Sustaining Ig Production: Application to Antibody Therapy. Front Immunol 2021; 12:671998. [PMID: 33995412 PMCID: PMC8117215 DOI: 10.3389/fimmu.2021.671998] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2021] [Accepted: 04/12/2021] [Indexed: 01/13/2023] Open
Abstract
Antibody therapy, where artificially-produced immunoglobulins (Ig) are used to treat pathological conditions such as auto-immune diseases and cancers, is a very innovative and competitive field. Although substantial efforts have been made in recent years to obtain specific and efficient antibodies, there is still room for improvement especially when considering a precise tissular targeting or increasing antigen affinity. A better understanding of the cellular and molecular steps of terminal B cell differentiation, in which an antigen-activated B cell becomes an antibody secreting cell, may improve antibody therapy. In this review, we use our recently published data about human B cell differentiation, to show that the mechanisms necessary to adapt a metamorphosing B cell to its new secretory function appear quite early in the differentiation process i.e., at the pre-plasmablast stage. After characterizing the molecular pathways appearing at this stage, we will focus on recent findings about two main processes involved in antibody production: unfolded protein response (UPR) and endoplasmic reticulum (ER) stress. We’ll show that many genes coding for factors involved in UPR and ER stress are induced at the pre-plasmablast stage, sustaining our hypothesis. Finally, we propose to use this recently acquired knowledge to improve productivity of industrialized therapeutic antibodies.
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Affiliation(s)
- Maud Lemarié
- Université de Rennes 1, INSERM, Établissement Français du Sang de Bretagne, UMR_S1236, Rennes, France
| | - Fabrice Chatonnet
- Université de Rennes 1, INSERM, Établissement Français du Sang de Bretagne, UMR_S1236, Rennes, France.,Laboratoire d'Hématologie, Pôle de Biologie, Centre Hospitalier Universitaire, Rennes, France
| | - Gersende Caron
- Université de Rennes 1, INSERM, Établissement Français du Sang de Bretagne, UMR_S1236, Rennes, France.,Laboratoire d'Hématologie, Pôle de Biologie, Centre Hospitalier Universitaire, Rennes, France
| | - Thierry Fest
- Université de Rennes 1, INSERM, Établissement Français du Sang de Bretagne, UMR_S1236, Rennes, France.,Laboratoire d'Hématologie, Pôle de Biologie, Centre Hospitalier Universitaire, Rennes, France
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45
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Zhang X, Yu T, Guo X, Zhang R, Jia Y, Shang C, Wang A, Jin Y, Lin P. Ufmylation regulates granulosa cell apoptosis via ER stress but not oxidative stress during goat follicular atresia. Theriogenology 2021; 169:47-55. [PMID: 33933757 DOI: 10.1016/j.theriogenology.2021.04.009] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2020] [Revised: 04/15/2021] [Accepted: 04/17/2021] [Indexed: 02/02/2023]
Abstract
Follicular atresia is primarily caused by granulosa cell (GC) apoptosis, although the mechanisms are largely unknown. Ufmylation is a recently identified ubiquitin-like post-translational modifier that plays an important role in cell proliferation and apoptosis. The purpose of this study was to investigate the effects of Ufmylation on GC apoptosis during goat follicular atresia. Ubiquitin-fold modifier 1 (UFM1) and its target DDRGK domain containing 1 (DDRGK1) proteins were identified in granulosa cells (GCs) isolated from all stages of preantral follicles and from healthy (HF), early atretic (EF) and progressed atretic (PF) antral follicles. The expression levels were higher in GCs derived from antral atretic follicles than healthy follicles. Although the viability of GCs was not affected after overexpression of UFM1, siRNA-mediated UFM1 silencing significantly inhibited GC proliferation and induced apoptosis. Notably, components of the ufmylation pathway were significantly upregulated in GCs induced by the ER stress agent tunicamycin (Tm) and thapsigargin (Tg), but not affected by oxidative stress inducer H2O2. Furthermore, UFM1 silencing markedly increased the apoptosis of GCs upon Tg treatment by stimulating the ER stress-related gene expression. Our results provide evidence that UFM1 and its target DDRGK1 are expressed in the goat GCs during follicular development and atresia, and ufmylation may play an important role in the prevention of ER stress but not oxidative stress-induced GCs apoptosis.
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Affiliation(s)
- Xinyan Zhang
- College of Veterinary Medicine, Northwest A&F University, Yangling, Shaanxi, 712100, China; Key Laboratory of Animal Biotechnology, Ministry of Agriculture and Rural Affairs, Northwest A&F University, Yangling, Shaanxi, 712100, China
| | - Tong Yu
- College of Veterinary Medicine, Northwest A&F University, Yangling, Shaanxi, 712100, China; Key Laboratory of Animal Biotechnology, Ministry of Agriculture and Rural Affairs, Northwest A&F University, Yangling, Shaanxi, 712100, China
| | - Xinyan Guo
- College of Veterinary Medicine, Northwest A&F University, Yangling, Shaanxi, 712100, China; Key Laboratory of Animal Biotechnology, Ministry of Agriculture and Rural Affairs, Northwest A&F University, Yangling, Shaanxi, 712100, China
| | - Ruixue Zhang
- College of Veterinary Medicine, Northwest A&F University, Yangling, Shaanxi, 712100, China; Key Laboratory of Animal Biotechnology, Ministry of Agriculture and Rural Affairs, Northwest A&F University, Yangling, Shaanxi, 712100, China
| | - Yanni Jia
- College of Veterinary Medicine, Northwest A&F University, Yangling, Shaanxi, 712100, China; Key Laboratory of Animal Biotechnology, Ministry of Agriculture and Rural Affairs, Northwest A&F University, Yangling, Shaanxi, 712100, China
| | - Chunmei Shang
- College of Veterinary Medicine, Northwest A&F University, Yangling, Shaanxi, 712100, China; Key Laboratory of Animal Biotechnology, Ministry of Agriculture and Rural Affairs, Northwest A&F University, Yangling, Shaanxi, 712100, China
| | - Aihua Wang
- College of Veterinary Medicine, Northwest A&F University, Yangling, Shaanxi, 712100, China; Key Laboratory of Animal Biotechnology, Ministry of Agriculture and Rural Affairs, Northwest A&F University, Yangling, Shaanxi, 712100, China
| | - Yaping Jin
- College of Veterinary Medicine, Northwest A&F University, Yangling, Shaanxi, 712100, China; Key Laboratory of Animal Biotechnology, Ministry of Agriculture and Rural Affairs, Northwest A&F University, Yangling, Shaanxi, 712100, China.
| | - Pengfei Lin
- College of Veterinary Medicine, Northwest A&F University, Yangling, Shaanxi, 712100, China; Key Laboratory of Animal Biotechnology, Ministry of Agriculture and Rural Affairs, Northwest A&F University, Yangling, Shaanxi, 712100, China.
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Cao Y, Li R, Shen M, Li C, Zou Y, Jiang Q, Liu S, Lu C, Li H, Liu H, Cai Y. DDRGK1, a crucial player of ufmylation system, is indispensable for autophagic degradation by regulating lysosomal function. Cell Death Dis 2021; 12:416. [PMID: 33879777 PMCID: PMC8058061 DOI: 10.1038/s41419-021-03694-9] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2020] [Revised: 04/06/2021] [Accepted: 04/07/2021] [Indexed: 01/21/2023]
Abstract
DDRGK domain-containing protein 1 (DDRGK1) is an important component of the newly discovered ufmylation system and its absence has been reported to induce extensive endoplasmic reticulum (ER) stress. Recently, emerging evidence indicates that the ufmylation system is correlated with autophagy, although the exact mechanism remains largely unknown. To explore the regulation mechanism of DDRGK1 on autophagy, in this study, we established an immortalized mouse embryonic fibroblast (MEF) cell lines harvested from the DDRGK1F/F:ROSA26-CreERT2 mice, in which DDRGK1 depletion can be induced by 4-hydroxytamoxifen (4-OHT) treatment. Here, we show that DDRGK1 deficiency in MEFs has a dual effect on autophagy, which leads to a significant accumulation of autophagosomes. On one hand, it promotes autophagy induction by impairing mTOR signaling; on the other hand, it blocks autophagy degradation by inhibiting autophagosome-lysosome fusion. This dual effect of DDRGK1 depletion on autophagy ultimately aggravates apoptosis in MEFs. Further studies reveal that DDRGK1 loss is correlated with suppressed lysosomal function, including impaired Cathepsin D (CTSD) expression, aberrant lysosomal pH, and v-ATPase accumulation, which might be a potential trigger for impairment in autophagy process. Hence, this study confirms a crucial role of DDRGK1 as an autophagy regulator by controlling lysosomal function. It may provide a theoretical basis for the treatment strategies of various physiological diseases caused by DDRGK1 deficiency.
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Affiliation(s)
- Yan Cao
- Department of Animal Genetics, Breeding and Reproduction, College of Animal Science and Technology, Nanjing Agricultural University, 210095, Nanjing, China
| | - Rongyang Li
- Department of Animal Genetics, Breeding and Reproduction, College of Animal Science and Technology, Nanjing Agricultural University, 210095, Nanjing, China
| | - Ming Shen
- Department of Animal Genetics, Breeding and Reproduction, College of Animal Science and Technology, Nanjing Agricultural University, 210095, Nanjing, China
| | - Chengyu Li
- Department of Animal Genetics, Breeding and Reproduction, College of Animal Science and Technology, Nanjing Agricultural University, 210095, Nanjing, China
| | - Yan Zou
- Department of Animal Genetics, Breeding and Reproduction, College of Animal Science and Technology, Nanjing Agricultural University, 210095, Nanjing, China
| | - Qiang Jiang
- Department of Animal Genetics, Breeding and Reproduction, College of Animal Science and Technology, Nanjing Agricultural University, 210095, Nanjing, China
| | - Shuo Liu
- Department of Animal Genetics, Breeding and Reproduction, College of Animal Science and Technology, Nanjing Agricultural University, 210095, Nanjing, China
| | - Chunwan Lu
- School of life sciences, Tianjin University, 300072, Tianjin, China
| | - Honglin Li
- Department of Biochemistry and Molecular Biology, Medical College of Georgia, Augusta University, Augusta, GA, 30912, USA
| | - Honglin Liu
- Department of Animal Genetics, Breeding and Reproduction, College of Animal Science and Technology, Nanjing Agricultural University, 210095, Nanjing, China.
| | - Yafei Cai
- Department of Animal Genetics, Breeding and Reproduction, College of Animal Science and Technology, Nanjing Agricultural University, 210095, Nanjing, China.
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Cao Z, Li S, Liu H, Li W, Sun Y, Li Z, Jia M, Su M. The UFSP2/UFMylation Pathway Is Involved in Silica-Induced Pulmonary Injury. DNA Cell Biol 2021; 40:589-594. [PMID: 33600261 DOI: 10.1089/dna.2020.6421] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Silicosis is an irreversible occupational pulmonary disease that is characterized as progressed pulmonary fibrosis. In this study, we investigated the changes of UFSP2 and the related UFMylation in silica-induced pulmonary injury mice models. The experimental silicosis models were prepared by intratracheal injection of silica particles, and the lung samples were harvested at the first or the seventh day after treatment. We found that the UFSP2 expression in the 1-day models was comparable, whereas it was upregulated in the 7-day models. Consistently, the UFMylation in the lung tissues of the 7-day models was activated. In addition, we observed the CADM2, an adhesion molecule, was reported to associate with epithelial-mesenchymal transition, was upregulated in the lungs of 7-day models. In contrast, it remained comparable in the 1-day models. Our data indicated that the UFSP2/UFMylation pathway and the CADM2 might be involved in the silica-induced pulmonary injury.
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Affiliation(s)
- Zhenju Cao
- Department of Clinical Laboratory, Peking University People's Hospital, Beijing, People's Republic of China
| | - Shanshan Li
- Department of Clinical Laboratory, Peking University People's Hospital, Beijing, People's Republic of China
| | - Hangqi Liu
- Department of Clinical Laboratory, Peking University People's Hospital, Beijing, People's Republic of China
| | - Wendi Li
- Department of Clinical Laboratory, Peking University People's Hospital, Beijing, People's Republic of China
| | - Yi Sun
- Department of Clinical Laboratory, Peking University People's Hospital, Beijing, People's Republic of China
| | - Zichen Li
- Department of Clinical Laboratory, Peking University People's Hospital, Beijing, People's Republic of China
| | - Mei Jia
- Department of Clinical Laboratory, Peking University People's Hospital, Beijing, People's Republic of China
| | - Ming Su
- Department of Clinical Laboratory, Peking University People's Hospital, Beijing, People's Republic of China
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48
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Witting KF, Mulder MP. Highly Specialized Ubiquitin-Like Modifications: Shedding Light into the UFM1 Enigma. Biomolecules 2021; 11:biom11020255. [PMID: 33578803 PMCID: PMC7916544 DOI: 10.3390/biom11020255] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2020] [Revised: 02/04/2021] [Accepted: 02/05/2021] [Indexed: 12/15/2022] Open
Abstract
Post-translational modification with Ubiquitin-like proteins represents a complex signaling language regulating virtually every cellular process. Among these post-translational modifiers is Ubiquitin-fold modifier (UFM1), which is covalently attached to its substrates through the orchestrated action of a dedicated enzymatic cascade. Originally identified to be involved embryonic development, its biological function remains enigmatic. Recent research reveals that UFM1 regulates a variety of cellular events ranging from DNA repair to autophagy and ER stress response implicating its involvement in a variety of diseases. Given the contribution of UFM1 to numerous pathologies, the enzymes of the UFM1 cascade represent attractive targets for pharmacological inhibition. Here we discuss the current understanding of this cryptic post-translational modification especially its contribution to disease as well as expand on the unmet needs of developing chemical and biochemical tools to dissect its role.
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49
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Quintero M, Liu S, Xia Y, Huang Y, Zou Y, Li G, Hu L, Singh N, Blumberg R, Cai Y, Xu H, Li H. Cdk5rap3 is essential for intestinal Paneth cell development and maintenance. Cell Death Dis 2021; 12:131. [PMID: 33504792 PMCID: PMC7841144 DOI: 10.1038/s41419-021-03401-8] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2020] [Revised: 12/30/2020] [Accepted: 01/04/2021] [Indexed: 02/07/2023]
Abstract
Intestinal Paneth cells are professional exocrine cells that play crucial roles in maintenance of homeostatic microbiome, modulation of mucosal immunity, and support for stem cell self-renewal. Dysfunction of these cells may lead to the pathogenesis of human diseases such as inflammatory bowel disease (IBD). Cdk5 activator binding protein Cdk5rap3 (also known as C53 and LZAP) was originally identified as a binding protein of Cdk5 activator p35. Although previous studies have indicated its involvement in a wide range of signaling pathways, the physiological function of Cdk5rap3 remains largely undefined. In this study, we found that Cdk5rap3 deficiency resulted in very early embryonic lethality, indicating its indispensable role in embryogenesis. To further investigate its function in the adult tissues and organs, we generated intestinal epithelial cell (IEC)-specific knockout mouse model to examine its role in intestinal development and tissue homeostasis. IEC-specific deletion of Cdk5rap3 led to nearly complete loss of Paneth cells and increased susceptibility to experimentally induced colitis. Interestingly, Cdk5rap3 deficiency resulted in downregulation of key transcription factors Gfi1 and Sox9, indicating its crucial role in Paneth cell fate specification. Furthermore, Cdk5rap3 is highly expressed in mature Paneth cells. Paneth cell-specific knockout of Cdk5rap3 caused partial loss of Paneth cells, while inducible acute deletion of Cdk5rap3 resulted in disassembly of the rough endoplasmic reticulum (RER) and abnormal zymogen granules in the mature Paneth cells, as well as loss of Paneth cells. Together, our results provide definitive evidence for the essential role of Cdk5rap3 in Paneth cell development and maintenance.
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Affiliation(s)
- Michaela Quintero
- Department of Biochemistry & Molecular Biology, Medical College of Georgia, Augusta University, Augusta, GA, 30912, USA
| | - Siyang Liu
- Department of Biochemistry & Molecular Biology, Medical College of Georgia, Augusta University, Augusta, GA, 30912, USA
| | - Yanhua Xia
- Faculty of Basic Medicine, Nanchang University, Nanchang, Jiangxi, China
| | - Yonghong Huang
- Faculty of Basic Medicine, Nanchang University, Nanchang, Jiangxi, China
| | - Yi Zou
- Department of Metabolic Endocrinology, The Third Affiliated Hospital of Nanchang University, Nanchang, Jiangxi, China
| | - Ge Li
- Department of Pathology, Sir Run Run Shaw Hospital, Zhejiang University, Hangzhou, China
| | - Ling Hu
- Department of Metabolic Endocrinology, The Third Affiliated Hospital of Nanchang University, Nanchang, Jiangxi, China
| | - Nagendra Singh
- Department of Biochemistry & Molecular Biology, Medical College of Georgia, Augusta University, Augusta, GA, 30912, USA
| | - Richard Blumberg
- Division of Gastroenterology, Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, 02115, USA
| | - Yafei Cai
- College of Animal Science and Technology, Nanjing Agricultural University, Nanjing, Jiangsu, China
| | - Hong Xu
- Faculty of Basic Medicine, Nanchang University, Nanchang, Jiangxi, China
| | - Honglin Li
- Department of Biochemistry & Molecular Biology, Medical College of Georgia, Augusta University, Augusta, GA, 30912, USA.
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50
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Schuren A, Boer I, Bouma E, Van de Weijer M, Costa A, Hubel P, Pichlmair A, Lebbink R, Wiertz E. The UFM1 Pathway Impacts HCMV US2-Mediated Degradation of HLA Class I. Molecules 2021; 26:molecules26020287. [PMID: 33430125 PMCID: PMC7827699 DOI: 10.3390/molecules26020287] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2020] [Revised: 12/22/2020] [Accepted: 12/22/2020] [Indexed: 11/16/2022] Open
Abstract
To prevent accumulation of misfolded proteins in the endoplasmic reticulum, chaperones perform quality control on newly translated proteins and redirect misfolded proteins to the cytosol for degradation by the ubiquitin-proteasome system. This pathway is called ER-associated protein degradation (ERAD). The human cytomegalovirus protein US2 induces accelerated ERAD of HLA class I molecules to prevent immune recognition of infected cells by CD8+ T cells. Using US2-mediated HLA-I degradation as a model for ERAD, we performed a genome-wide CRISPR/Cas9 library screen to identify novel cellular factors associated with ERAD. Besides the identification of known players such as TRC8, p97, and UBE2G2, the ubiquitin-fold modifier1 (UFM1) pathway was found to affect degradation of HLA-I. UFMylation is a post-translational modification resembling ubiquitination. Whereas we observe ubiquitination of HLA-I, no UFMylation was detected on HLA-I or several other proteins involved in degradation of HLA-I, suggesting that the UFM1 pathway impacts ERAD in a different manner than ubiquitin. Interference with the UFM1 pathway seems to specifically inhibit the ER-to-cytosol dislocation of HLA-I. In the absence of detectable UFMylation of HLA-I, UFM1 may contribute to US2-mediated HLA-I degradation by misdirecting protein sorting indirectly. Mass spectrometry analysis of US2-expressing cells showed that ribosomal proteins are a major class of proteins undergoing extensive UFMylation; the role of these changes in protein degradation may be indirect and remains to be established.
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Affiliation(s)
- A.B.C. Schuren
- Department of Medical Microbiology, University Medical Center Utrecht, Postbus 85500, 3508 GA Utrecht, The Netherlands; (A.B.C.S.); (I.G.J.B.); (E.M.B.); (M.L.v.d.W.); (A.I.C.)
| | - I.G.J. Boer
- Department of Medical Microbiology, University Medical Center Utrecht, Postbus 85500, 3508 GA Utrecht, The Netherlands; (A.B.C.S.); (I.G.J.B.); (E.M.B.); (M.L.v.d.W.); (A.I.C.)
| | - E.M. Bouma
- Department of Medical Microbiology, University Medical Center Utrecht, Postbus 85500, 3508 GA Utrecht, The Netherlands; (A.B.C.S.); (I.G.J.B.); (E.M.B.); (M.L.v.d.W.); (A.I.C.)
- Department of Medical Microbiology, University Medical Center Groningen, Postbus 30001, 9700 RB Groningen, The Netherlands
| | - M.L. Van de Weijer
- Department of Medical Microbiology, University Medical Center Utrecht, Postbus 85500, 3508 GA Utrecht, The Netherlands; (A.B.C.S.); (I.G.J.B.); (E.M.B.); (M.L.v.d.W.); (A.I.C.)
- Sir William Dunn School of Pathology, University of Oxford, Oxford OX1 3RE, UK
| | - A.I. Costa
- Department of Medical Microbiology, University Medical Center Utrecht, Postbus 85500, 3508 GA Utrecht, The Netherlands; (A.B.C.S.); (I.G.J.B.); (E.M.B.); (M.L.v.d.W.); (A.I.C.)
| | - P. Hubel
- Innate Immunity Laboratory, Max-Planck Institute for Biochemistry, Am Klopferspitz 18, Martinsried, D-82152 Munich, Germany; (P.H.); (A.P.)
- Core Facility Hohenheim, Universität Hohenheim, Emil-Wolff-Straße 12, D-70599 Stuttgart, Germany
| | - A. Pichlmair
- Innate Immunity Laboratory, Max-Planck Institute for Biochemistry, Am Klopferspitz 18, Martinsried, D-82152 Munich, Germany; (P.H.); (A.P.)
- School of Medicine, Institute of Virology, Technical University of Munich, Schneckenburgerstr 8, D-81675 Munich, Germany
- German Center for Infection Research (DZIF), Munich Partner Site, D-85764 Neuherberg, Germany
| | - R.J. Lebbink
- Department of Medical Microbiology, University Medical Center Utrecht, Postbus 85500, 3508 GA Utrecht, The Netherlands; (A.B.C.S.); (I.G.J.B.); (E.M.B.); (M.L.v.d.W.); (A.I.C.)
- Correspondence: (R.J.L.); (E.J.H.J.W.); Tel.: +31-887550627 (R.J.L.); +31-887550862 (E.J.H.J.W.)
| | - E.J.H.J. Wiertz
- Department of Medical Microbiology, University Medical Center Utrecht, Postbus 85500, 3508 GA Utrecht, The Netherlands; (A.B.C.S.); (I.G.J.B.); (E.M.B.); (M.L.v.d.W.); (A.I.C.)
- Correspondence: (R.J.L.); (E.J.H.J.W.); Tel.: +31-887550627 (R.J.L.); +31-887550862 (E.J.H.J.W.)
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