1
|
Quan B, Bailey MA, Mantyh J, Hsu DS, Fitzgerald MC. Protein Folding Stability Profiling of Colorectal Cancer Chemoresistance Identifies Functionally Relevant Biomarkers. J Proteome Res 2023; 22:1923-1935. [PMID: 37126456 PMCID: PMC10441206 DOI: 10.1021/acs.jproteome.3c00045] [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] [Indexed: 05/02/2023]
Abstract
Reported here is the application of three protein folding stability profiling techniques (including the stability of proteins from rates of oxidation, thermal protein profiling, and limited proteolysis approaches) to identify differentially stabilized proteins in six patient-derived colorectal cancer (CRC) cell lines with different oxaliplatin sensitivities and eight CRC patient-derived xenografts (PDXs) derived from two of the patient derived cell lines with different oxaliplatin sensitivities. Compared to conventional protein expression level analyses, which were also performed here, the stability profiling techniques identified both unique and novel proteins and cellular components that differentiated the sensitive and resistant samples including 36 proteins that were differentially stabilized in at least two techniques in both the cell line and PDX studies of oxaliplatin resistance. These 36 differentially stabilized proteins included 10 proteins previously connected to cancer chemoresistance. Two differentially stabilized proteins, fatty acid synthase and elongation factor 2, were functionally validated in vitro and found to be druggable protein targets with biological functions that can be modulated to improve the efficacy of CRC chemotherapy. These results add to our understanding of CRC oxaliplatin resistance, suggest biomarker candidates for predicting oxaliplatin sensitivity in CRC, and inform new strategies for overcoming chemoresistance in CRC.
Collapse
Affiliation(s)
- Baiyi Quan
- Department of Chemistry, Duke University, Durham, NC 27708-0346
| | | | - John Mantyh
- Deparment of Medicine, Duke University Medical Center, Durham, NC
| | - David S. Hsu
- Deparment of Medicine, Duke University Medical Center, Durham, NC
| | | |
Collapse
|
2
|
Zhao Y, Ren P, Yang Z, Wang L, Hu C. Inhibition of SND1 overcomes chemoresistance in bladder cancer cells by promoting ferroptosis. Oncol Rep 2022; 49:16. [PMID: 36453257 PMCID: PMC9773013 DOI: 10.3892/or.2022.8453] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2021] [Accepted: 06/30/2022] [Indexed: 11/27/2022] Open
Abstract
Chemotherapy remains one of the most important adjuvant treatments for bladder cancer (BC). However, similar to other malignancies, BC is prone to chemotherapy resistance and only approximately half of muscle‑invasive patients with BC respond to chemotherapy. The present study aimed to reveal the mechanisms underlying chemoresistance in BC cells. Cell viabilities were assessed by CCK‑8 assay. The differentiated expression of genes in chemoresistant and their parental BC cells were examined by RNA sequencing. Cell death was determined by flow cytometry. Different cell death inhibitors were used to determine the types of cell death. Levels of reactive oxygen species, iron, glutathione and malondialdehyde were assessed using the corresponding commercial kits. ChIP and dual luciferase activity assays were performed to investigate the interaction between staphylococcal nuclease and tumour domain containing 1 (SND1) and glutathione peroxidase 4 (GPX4) mRNA. RNAi was used to knockdown SND1 or GPX4. The results revealed that SND1 in BC cells were insensitive to cisplatin, and inhibition of SND1 overcame this resistance. Silencing of SND1 enhanced cell death induced by cisplatin by promoting ferroptosis in BC cells. Mechanistically, SND1 was revealed to bind to the 3'UTR region of GPX4 mRNA and stabilise it. Knockdown of GPX4 could also overcome chemoresistance, and overexpressing GPX4 reversed the effects of silencing of GPX4 on the chemosensitivity of BC cells. Thus, targeting the SND1‑GPX4 axis may be a potential strategy to overcome chemoresistance in BC cells.
Collapse
Affiliation(s)
- Yu Zhao
- Department of Urology, Ningbo No. 7 Hospital, Ningbo, Zhejiang 315202, P.R. China
| | - Pengpeng Ren
- Department of Urology, Ningbo No. 7 Hospital, Ningbo, Zhejiang 315202, P.R. China
| | - Zhiqin Yang
- Department of Urology, Ningbo No. 7 Hospital, Ningbo, Zhejiang 315202, P.R. China
| | - Lei Wang
- Department of Urology, Ningbo No. 7 Hospital, Ningbo, Zhejiang 315202, P.R. China
| | - Changhua Hu
- Department of Urology, Ningbo No. 7 Hospital, Ningbo, Zhejiang 315202, P.R. China,Correspondence to: Dr Changhua Hu, Department of Urology, Ningbo No. 7 Hospital, 718 Nan Er Xi Road, Ningbo, Zhejiang 315202, P.R. China, E-mail:
| |
Collapse
|
3
|
Pengelly RJ, Bakhtiar D, Borovská I, Královičová J, Vořechovský I. Exonic splicing code and protein binding sites for calcium. Nucleic Acids Res 2022; 50:5493-5512. [PMID: 35474482 PMCID: PMC9177970 DOI: 10.1093/nar/gkac270] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2022] [Revised: 04/01/2022] [Accepted: 04/05/2022] [Indexed: 11/12/2022] Open
Abstract
Auxilliary splicing sequences in exons, known as enhancers (ESEs) and silencers (ESSs), have been subject to strong selection pressures at the RNA and protein level. The protein component of this splicing code is substantial, recently estimated at ∼50% of the total information within ESEs, but remains poorly understood. The ESE/ESS profiles were previously associated with the Irving-Williams (I-W) stability series for divalent metals, suggesting that the ESE/ESS evolution was shaped by metal binding sites. Here, we have examined splicing activities of exonic sequences that encode protein binding sites for Ca2+, a weak binder in the I-W affinity order. We found that predicted exon inclusion levels for the EF-hand motifs and for Ca2+-binding residues in nonEF-hand proteins were higher than for average exons. For canonical EF-hands, the increase was centred on the EF-hand chelation loop and, in particular, on Ca2+-coordinating residues, with a 1>12>3∼5>9 hierarchy in the 12-codon loop consensus and usage bias at codons 1 and 12. The same hierarchy but a lower increase was observed for noncanonical EF-hands, except for S100 proteins. EF-hand loops preferentially accumulated exon splits in two clusters, one located in their N-terminal halves and the other around codon 12. Using splicing assays and published crosslinking and immunoprecipitation data, we identify candidate trans-acting factors that preferentially bind conserved GA-rich motifs encoding negatively charged amino acids in the loops. Together, these data provide evidence for the high capacity of codons for Ca2+-coordinating residues to be retained in mature transcripts, facilitating their exon-level expansion during eukaryotic evolution.
Collapse
Affiliation(s)
- Reuben J Pengelly
- University of Southampton, Faculty of Medicine, Southampton SO16 6YD, UK
| | - Dara Bakhtiar
- University of Southampton, Faculty of Medicine, Southampton SO16 6YD, UK
| | - Ivana Borovská
- Slovak Academy of Sciences, Centre of Biosciences, 840 05 Bratislava, Slovak Republic
| | - Jana Královičová
- University of Southampton, Faculty of Medicine, Southampton SO16 6YD, UK
- Slovak Academy of Sciences, Centre of Biosciences, 840 05 Bratislava, Slovak Republic
- Slovak Academy of Sciences, Institute of Zoology, 845 06 Bratislava, Slovak Republic
| | - Igor Vořechovský
- University of Southampton, Faculty of Medicine, Southampton SO16 6YD, UK
| |
Collapse
|
4
|
Swaminathan G, Shigna A, Kumar A, Byroju VV, Durgempudi VR, Dinesh Kumar L. RNA Interference and Nanotechnology: A Promising Alliance for Next Generation Cancer Therapeutics. FRONTIERS IN NANOTECHNOLOGY 2021. [DOI: 10.3389/fnano.2021.694838] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
Cancer is a significant health hazard of the 21st century, and GLOBOCAN predicts increasing cancer incidence in the coming decades. Though several conventional treatment modalities exist, most of them end up causing off-target and debilitating effects, and drug resistance acquisition. Advances in our understanding of tumor molecular biology offer alternative strategies for precise, robust, and potentially less toxic treatment paradigms for circumventing the disease at the cellular and molecular level. Several deregulated molecules associated with tumorigenesis have been developed as targets in RNA interference (RNAi) based cancer therapeutics. RNAi, a post-transcriptional gene regulation mechanism, has significantly gained attention because of its precise multi-targeted gene silencing. Although the RNAi approach is favorable, the direct administration of small oligonucleotides has not been fruitful because of their inherent lower half-lives and instability in the biological systems. Moreover, the lack of an appropriate delivery system to the primary site of the tumor that helps determine the potency of the drug and its reach, has limited the effective medical utilization of these bio-drugs. Nanotechnology, with its unique characteristics of enhanced permeation and better tumor-targeting efficiency, offers promising solutions owing to the various possibilities and amenability for modifications of the nanoparticles to augment cancer therapeutics. Nanoparticles could be made multimodal, by designing and synthesizing multiple desired functionalities, often resulting in unique and potentially applicable biological structures. A small number of Phase I clinical trials with systemically administered siRNA molecules conjugated with nanoparticles have been completed and the results are promising, indicating that, these new combinatorial therapies can successfully and safely be used to inhibit target genes in cancer patients to alleviate some of the disease burden. In this review, we highlight different types of nano-based delivery strategies for engineering Nano-RNAi-based bio drugs. Furthermore, we have highlighted the insights gained from current research that are entering the preclinical evaluation and information about initial clinical developments, shaping the future for next generation cancer therapeutics.
Collapse
|
5
|
Cui Y, Li L, Li Z, Yin J, Lane J, Ji J, Jiang WG. Dual effects of targeting S100A11 on suppressing cellular metastatic properties and sensitizing drug response in gastric cancer. Cancer Cell Int 2021; 21:243. [PMID: 33931048 PMCID: PMC8086328 DOI: 10.1186/s12935-021-01949-1] [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: 02/16/2021] [Accepted: 04/22/2021] [Indexed: 12/26/2022] Open
Abstract
BACKGROUND S100A11 is a member of the S100 family of proteins containing two EF-hand calcium-binding motifs. The dysregulated expression of the S100A11 gene has been implicated in tumour metastasis. However, the role of S100A11 protein in tumour cell response to chemotherapeutic drugs has not been characterised. METHODS Transcript levels of S100A11 in gastric cancer were evaluated using an in-house patient cohort. Protein expression of S100A11 in gastric cancer was estimated by immunohistochemistry of a tissue microarray. The stable gastric cancer cell lines were established using lentiviral shRNA vectors. The knockdown of S100A11 was validated by qRT-PCR, PCR, and Western blot. The cellular function of S100A11 was estimated by assays of cell adhesion, migration, and invasion. The cell cytotoxic assay was performed to investigate the response to chemotherapeutic drugs. An unsupervised hierarchical clustering and principal component analysis (HCPC) was applied to unveil the dimensional role of S100A11 among all S100 family members in gastric cancer. RESULTS High expression of S100A11 is associated with poor survival of gastric cancer patients (p < 0.001, HR = 1.85) and is an independent prognostic factor of gastric cancer. We demonstrate that S100A11 plays its role as a tumour promoter through regulating the MMP activity and the epithelial-mesenchymal transition (EMT) process. The stable knockdown of S100A11 suppresses the metastatic properties of gastric cancer cells, which include enhancing cell adhesion, but decelerating cell migration and invasion. Furthermore, the knockdown of S100A11 gene expression dramatically induces the cellular response of gastric cancer cells to the first-line chemotherapeutic drugs fluoropyrimidine 5-fluorouracil (5-FU) and cisplatin. CONCLUSION The present study identifies S100A11 as a tumour promoter in gastric cancer. More importantly, the S100A11-specific targeting potentially presents dual therapeutic benefits by not only controlling tumour progression but also sensitising chemotherapeutic cytotoxic response.
Collapse
Affiliation(s)
- Yuxin Cui
- Cardiff China Medical Research Collaborative, Cardiff University School of Medicine, Cardiff University, Heath Park, Cardiff, CF14 4XN, UK.
| | - Liting Li
- China-Japan Friendship Hospital, Yinghuayuan East Street, Beijing, 10029, China
| | - Zhilei Li
- Department of Pharmacy, Southern University of Science and Technology Hospital, Shenzhen, 518055, China
| | - Jie Yin
- Department of General Surgery, Beijing Friendship Hospital, Capital Medical University, Beijing, China.,Beijing Key Laboratory of Cancer Invasion and Metastasis Research and National Clinical Research Center for Digestive Diseases, 95 Yong-an Road, Xi-Cheng District, Beijing, 100050, China
| | - Jane Lane
- Cardiff China Medical Research Collaborative, Cardiff University School of Medicine, Cardiff University, Heath Park, Cardiff, CF14 4XN, UK
| | - Jiafu Ji
- Key Laboratory of Carcinogenesis and Translational Research, Department of GI Surgery, Peking University Cancer Hospital and Institute, Beijing, 100142, China
| | - Wen G Jiang
- Cardiff China Medical Research Collaborative, Cardiff University School of Medicine, Cardiff University, Heath Park, Cardiff, CF14 4XN, UK
| |
Collapse
|
6
|
Serum Levels of S100A11 and MMP-9 in Patients with Epithelial Ovarian Cancer and Their Clinical Significance. BIOMED RESEARCH INTERNATIONAL 2021; 2021:7341247. [PMID: 33763485 PMCID: PMC7952149 DOI: 10.1155/2021/7341247] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 08/22/2020] [Revised: 12/29/2020] [Accepted: 01/07/2021] [Indexed: 11/17/2022]
Abstract
Objective To investigate the serum levels of calgizzarin (S100A11) and matrix metalloproteinase-9 (MMP9) in patients with epithelial ovarian cancer (EOC) and determine their clinical significance. Methods Serum levels of S100A11 and MMP9 were detected in patients with EOC, patients with benign ovarian tumor, and healthy women. The correlation between the two markers and clinicopathological characteristics of ovarian cancer was analysed. Results The serum levels of S100A11 and MMP-9 in patients with EOC were higher than those in patients with benign ovarian tumor and in healthy women, and the expression levels of S100A11 and MMP-9 were positively correlated. S100A11 and MMP-9 were correlated with tumor staging, postoperative residual foci, ascites volume, serum CA125 level, chemotherapy response, and lymph node metastasis, while S100A11 and MMP-9 were not associated with the bilevel classification, histological type, age, and degree of differentiation. Conclusion S100A11 and MMP-9 were both highly expressed in the serum of patients with EOC and were associated with cancer development, invasion, and metastasis. Therefore, they can be used as an important reference maker in the diagnosis and treatment of ovarian cancer.
Collapse
|
7
|
miRNA-296-5p functions as a potential tumor suppressor in human osteosarcoma by targeting SND1. Chin Med J (Engl) 2021; 134:564-572. [PMID: 33652459 PMCID: PMC7929571 DOI: 10.1097/cm9.0000000000001400] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023] Open
Abstract
Background: The pathogenesis of osteosarcoma (OS) is still unclear, and it is still necessary to find new targets and drugs for anti-OS. This study aimed to investigate the role and mechanism of the anti-OS effects of miR-296-5p. Methods: We measured the expression of miR-296-5p in human OS cell lines and tissues. The effect of miR-296-5p and its target gene staphylococcal nuclease and tudor domain containing 1 on proliferation, migration, and invasion of human OS lines was examined. The Student's t test was used for statistical analysis. Results: We found that microRNA (miR)-296-5p was significantly downregulated in OS cell lines and tissues (control vs. OS, 1.802 ± 0.313 vs. 0.618 ± 0.235, t = 6.402, P < 0.01). Overexpression of miR-296-5p suppressed proliferation, migration, and invasion of OA cells. SND1 was identified as a target of miR-296-5p by bioinformatic analysis and dual-luciferase reporter assay. Overexpression of SND1 abrogated the effects induced by miR-296-5p upregulation (miRNA-296-5p vs. miRNA-296-5p + SND1, 0.294 ± 0.159 vs. 2.300 ± 0.277, t = 12.68, P = 0.003). Conclusion: Our study indicates that miR-296-5p may function as a tumor suppressor by targeting SND1 in OS.
Collapse
|
8
|
Li P, He Y, Chen T, Choy KY, Chow TS, Wong ILK, Yang X, Sun W, Su X, Chan TH, Chow LMC. Disruption of SND1-MTDH Interaction by a High Affinity Peptide Results in SND1 Degradation and Cytotoxicity to Breast Cancer Cells In Vitro and In Vivo. Mol Cancer Ther 2021; 20:76-84. [PMID: 33268570 DOI: 10.1158/1535-7163.mct-20-0130] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2020] [Revised: 07/15/2020] [Accepted: 11/03/2020] [Indexed: 12/24/2022]
Abstract
Staphylococcal nuclease domain-containing protein 1 (SND1) is a multifunctional oncoprotein overexpressed in breast cancer. Binding of metadherin (MTDH) to SND1 results in the stabilization of SND1 and is important in the initiation and progression of breast cancer. Disruption of such interaction is a potential therapeutic for breast cancer. SN1/2 domain of SND1 was used as bait in a phage display screening to identify a 12-amino acid peptide 4-2. The activity of peptide 4-2 was evaluated by ELISA, coimmunoprecipitation, MTS, Western blot analysis, and xenograft mouse model. Peptide 4-2 could disrupt SND1-MTDH interaction. Cell penetrating derivative of peptide 4-2 (CPP-4-2) could penetrate and kill breast cancer cells by disrupting SND1-MTDH interaction and degrading SND1. Tryptophan 10 (W10) of peptide 4-2 was essential in mediating cytotoxicity, SND1 interaction, SND1-MTDH disruption, and SND1 degradation. CPP-4-2 could inhibit the growth of breast cancer in a xenograft mouse model. The SND1-interacting peptide 4-2 could kill breast cancer cells both in vitro and in vivo by interacting with SND1, disrupting SND1-MTDH interaction, and inducing SND1 degradation. W10 was an essential amino acid in the activity of peptide 4-2.
Collapse
Affiliation(s)
- Peng Li
- Department of Applied Biology and Chemical Technology and State Key Laboratory of Chemical Biology and Drug Discovery, the Hong Kong Polytechnic University, Hung Hom, Hong Kong
| | - Yunjiao He
- Department of Applied Biology and Chemical Technology and State Key Laboratory of Chemical Biology and Drug Discovery, the Hong Kong Polytechnic University, Hung Hom, Hong Kong
| | - Teng Chen
- Department of Applied Biology and Chemical Technology and State Key Laboratory of Chemical Biology and Drug Discovery, the Hong Kong Polytechnic University, Hung Hom, Hong Kong
| | - Kit-Ying Choy
- Department of Applied Biology and Chemical Technology and State Key Laboratory of Chemical Biology and Drug Discovery, the Hong Kong Polytechnic University, Hung Hom, Hong Kong
| | - Tsun Sing Chow
- Department of Applied Biology and Chemical Technology and State Key Laboratory of Chemical Biology and Drug Discovery, the Hong Kong Polytechnic University, Hung Hom, Hong Kong
| | - Iris L K Wong
- Department of Applied Biology and Chemical Technology and State Key Laboratory of Chemical Biology and Drug Discovery, the Hong Kong Polytechnic University, Hung Hom, Hong Kong
| | - Xinqing Yang
- Department of Applied Biology and Chemical Technology and State Key Laboratory of Chemical Biology and Drug Discovery, the Hong Kong Polytechnic University, Hung Hom, Hong Kong
| | - Wenqin Sun
- Department of Applied Biology and Chemical Technology and State Key Laboratory of Chemical Biology and Drug Discovery, the Hong Kong Polytechnic University, Hung Hom, Hong Kong
| | - Xiaochun Su
- Department of Applied Biology and Chemical Technology and State Key Laboratory of Chemical Biology and Drug Discovery, the Hong Kong Polytechnic University, Hung Hom, Hong Kong
| | - Tak-Hang Chan
- Department of Applied Biology and Chemical Technology and State Key Laboratory of Chemical Biology and Drug Discovery, the Hong Kong Polytechnic University, Hung Hom, Hong Kong.
- Department of Chemistry, McGill University, Montreal, Quebec, Canada
| | - Larry M C Chow
- Department of Applied Biology and Chemical Technology and State Key Laboratory of Chemical Biology and Drug Discovery, the Hong Kong Polytechnic University, Hung Hom, Hong Kong.
| |
Collapse
|
9
|
Navarro-Imaz H, Ochoa B, García-Arcos I, Martínez MJ, Chico Y, Fresnedo O, Rueda Y. Molecular and cellular insights into the role of SND1 in lipid metabolism. Biochim Biophys Acta Mol Cell Biol Lipids 2020; 1865:158589. [DOI: 10.1016/j.bbalip.2019.158589] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2019] [Revised: 11/20/2019] [Accepted: 12/11/2019] [Indexed: 12/11/2022]
|
10
|
Hua X, Zhang H, Jia J, Chen S, Sun Y, Zhu X. Roles of S100 family members in drug resistance in tumors: Status and prospects. Biomed Pharmacother 2020; 127:110156. [PMID: 32335300 DOI: 10.1016/j.biopha.2020.110156] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2020] [Revised: 04/06/2020] [Accepted: 04/08/2020] [Indexed: 02/06/2023] Open
Abstract
Chemotherapy and targeted therapy can significantly improve survival rates in cancer, but multiple drug resistance (MDR) limits the efficacy of these approaches. Understanding the molecular mechanisms underlying MDR is crucial for improving drug efficacy and clinical outcomes of patients with cancer. S100 proteins belong to a family of calcium-binding proteins and have various functions in tumor development. Increasing evidence demonstrates that the dysregulation of various S100 proteins contributes to the development of drug resistance in tumors, providing a basis for the development of predictive and prognostic biomarkers in cancer. Therefore, a combination of biological inhibitors or sensitizers of dysregulated S100 proteins could enhance therapeutic responses. In this review, we provide a detailed overview of the mechanisms by which S100 family members influence resistance of tumors to cancer treatment, with a focus on the development of effective strategies for overcoming MDR.
Collapse
Affiliation(s)
- Xin Hua
- Southeast University Medical College, Nanjing, 210009, China.
| | - Hongming Zhang
- Department of Respiratory Medicine, Yancheng Third People's Hospital, Southeast University Medical College, Yancheng, 224000, China.
| | - Jinfang Jia
- Southeast University Medical College, Nanjing, 210009, China.
| | - Shanshan Chen
- Southeast University Medical College, Nanjing, 210009, China.
| | - Yue Sun
- Southeast University Medical College, Nanjing, 210009, China.
| | - Xiaoli Zhu
- Southeast University Medical College, Nanjing, 210009, China; Department of Respiratory Medicine, Zhongda Hospital of Southeast University Medical College, Nanjing, 210009, China.
| |
Collapse
|
11
|
Ochoa B, Chico Y, Martínez MJ. Insights Into SND1 Oncogene Promoter Regulation. Front Oncol 2018; 8:606. [PMID: 30619748 PMCID: PMC6297716 DOI: 10.3389/fonc.2018.00606] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2018] [Accepted: 11/27/2018] [Indexed: 01/09/2023] Open
Abstract
The staphylococcal nuclease and Tudor domain containing 1 gene (SND1), also known as Tudor-SN, TSN or p100, encodes an evolutionarily conserved protein with invariant domain composition. SND1 contains four repeated staphylococcal nuclease domains and a single Tudor domain, which confer it endonuclease activity and extraordinary capacity for interacting with nucleic acids, individual proteins and protein complexes. Originally described as a transcriptional coactivator, SND1 plays fundamental roles in the regulation of gene expression, including RNA splicing, interference, stability, and editing, as well as in the regulation of protein and lipid homeostasis. Recently, SND1 has gained attention as a potential disease biomarker due to its positive correlation with cancer progression and metastatic spread. Such functional diversity of SND1 marks this gene as interesting for further analysis in relation with the multiple levels of regulation of SND1 protein production. In this review, we summarize the SND1 genomic region and promoter architecture, the set of transcription factors that can bind the proximal promoter, and the evidence supporting transactivation of SND1 promoter by a number of signal transduction pathways operating in different cell types and conditions. Unraveling the mechanisms responsible for SND1 promoter regulation is of utmost interest to decipher the SND1 contribution in the realm of both normal and abnormal physiology.
Collapse
Affiliation(s)
| | | | - María José Martínez
- Department of Physiology, Faculty of Medicine and Nursing, University of the Basque Country UPV/EHU, Leioa, Spain
| |
Collapse
|
12
|
Navarro-Imaz H, Chico Y, Rueda Y, Fresnedo O. Channeling of newly synthesized fatty acids to cholesterol esterification limits triglyceride synthesis in SND1-overexpressing hepatoma cells. Biochim Biophys Acta Mol Cell Biol Lipids 2018; 1864:137-146. [PMID: 30448348 DOI: 10.1016/j.bbalip.2018.11.004] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2018] [Revised: 10/11/2018] [Accepted: 11/11/2018] [Indexed: 12/15/2022]
Abstract
SND1 is a putative oncoprotein whose molecular function remains unclear. Its overexpression in hepatocellular carcinoma impairs cholesterol homeostasis due to the altered activation of the sterol regulatory element-binding protein (SREBP) 2, which results in the accumulation of cellular cholesteryl esters (CE). In this work, we explored whether high cholesterol synthesis and esterification originates changes in glycerolipid metabolism that might affect cell growth, given that acetyl-coenzyme A is required for cholesterogenesis and fatty acids (FA) are the substrates of acyl-coenzyme A:cholesterol acyltransferase (ACAT). SND1-overexpressing hepatoma cells show low triglyceride (TG) synthesis, but phospholipid biosynthesis or cell growth is not affected. Limited TG synthesis is not due to low acetyl-coenzyme A or NADPH availability. We demonstrate that the main factor limiting TG synthesis is the utilization of FAs for cholesterol esterification. These metabolic adaptations are linked to high Scd1 expression, needed for the de novo production of oleic acid, the main FA used by ACAT. We conclude that high cholesterogenesis due to SND1 overexpression might determine the channeling of FAs to CEs.
Collapse
Affiliation(s)
- Hiart Navarro-Imaz
- Lipids & Liver Research Group, Department of Physiology, Faculty of Medicine and Nursing, University of the Basque Country UPV/EHU, B° Sarriena s/n, 48940 Leioa, Spain.
| | - Yolanda Chico
- Lipids & Liver Research Group, Department of Physiology, Faculty of Medicine and Nursing, University of the Basque Country UPV/EHU, B° Sarriena s/n, 48940 Leioa, Spain.
| | - Yuri Rueda
- Lipids & Liver Research Group, Department of Physiology, Faculty of Medicine and Nursing, University of the Basque Country UPV/EHU, B° Sarriena s/n, 48940 Leioa, Spain.
| | - Olatz Fresnedo
- Lipids & Liver Research Group, Department of Physiology, Faculty of Medicine and Nursing, University of the Basque Country UPV/EHU, B° Sarriena s/n, 48940 Leioa, Spain.
| |
Collapse
|
13
|
Cui X, Zhao C, Yao X, Qian B, Su C, Ren Y, Yao Z, Gao X, Yang J. SND1 acts as an anti-apoptotic factor via regulating the expression of lncRNA UCA1 in hepatocellular carcinoma. RNA Biol 2018; 15:1364-1375. [PMID: 30321081 DOI: 10.1080/15476286.2018.1534525] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022] Open
Abstract
Multifunctional SND1 (staphylococcal nuclease and tudor domain containing 1) protein is reportedly associated with different types of RNA molecules, including mRNA, miRNA, pre-miRNA, and dsRNA. SND1 has been implicated in a number of biological processes in eukaryotic cells, including cell cycle, DNA damage repair, proliferation, and apoptosis. However, the specific molecular mechanism regarding the anti-apoptotic role of SND1 in mammalian cells remains largely elusive. In this study, the analysis of the online HPA (human protein atlas) and TCGA (the cancer genome atlas) databases showed the significantly high expression of SND1 in liver cancer patients. We found that the downregulation or complete depletion of SND1 enhanced the apoptosis levels of HepG2 and SMMC-7721 cells upon stimulation with 5-Fu (5-fluorouracil), a chemotherapeutic drug for HCC (hepatocellular carcinoma). SND1 affected the 5-Fu-induced apoptosis levels of HCC cells by modulating the expression of UCA1 (urothelial cancer associated 1), which is a lncRNA (long non-coding RNA). Moreover, MYB (MYB proto-oncogene, transcription factor) may be involved in the regulation of SND1 in UCA1 expression. In summary, our study identified SND1 as an anti-apoptotic factor in hepatocellular carcinoma cells via the modulation of lncRNA UCA1, which sheds new light on the relationship between SND1 protein and lncRNA.
Collapse
Affiliation(s)
- Xiaoteng Cui
- a Department of Biochemistry and Molecular Biology, Department of Immunology, School of Basic Medical Sciences , Tianjin Medical University , Tianjin , China.,b Key Laboratory of Immune Microenvironment and Disease, Ministry of Education, Key Laboratory of Cellular and Molecular Immunology in Tianjin, Excellent Talent Project , Tianjin Medical University , Tianjin , China
| | - Chunyan Zhao
- a Department of Biochemistry and Molecular Biology, Department of Immunology, School of Basic Medical Sciences , Tianjin Medical University , Tianjin , China.,b Key Laboratory of Immune Microenvironment and Disease, Ministry of Education, Key Laboratory of Cellular and Molecular Immunology in Tianjin, Excellent Talent Project , Tianjin Medical University , Tianjin , China
| | - Xuyang Yao
- c Department of Ophthalmology, Peking University First Hospital , Beijing , China
| | - Baoxin Qian
- a Department of Biochemistry and Molecular Biology, Department of Immunology, School of Basic Medical Sciences , Tianjin Medical University , Tianjin , China.,b Key Laboratory of Immune Microenvironment and Disease, Ministry of Education, Key Laboratory of Cellular and Molecular Immunology in Tianjin, Excellent Talent Project , Tianjin Medical University , Tianjin , China
| | - Chao Su
- a Department of Biochemistry and Molecular Biology, Department of Immunology, School of Basic Medical Sciences , Tianjin Medical University , Tianjin , China.,b Key Laboratory of Immune Microenvironment and Disease, Ministry of Education, Key Laboratory of Cellular and Molecular Immunology in Tianjin, Excellent Talent Project , Tianjin Medical University , Tianjin , China
| | - Yuanyuan Ren
- a Department of Biochemistry and Molecular Biology, Department of Immunology, School of Basic Medical Sciences , Tianjin Medical University , Tianjin , China.,b Key Laboratory of Immune Microenvironment and Disease, Ministry of Education, Key Laboratory of Cellular and Molecular Immunology in Tianjin, Excellent Talent Project , Tianjin Medical University , Tianjin , China
| | - Zhi Yao
- a Department of Biochemistry and Molecular Biology, Department of Immunology, School of Basic Medical Sciences , Tianjin Medical University , Tianjin , China.,b Key Laboratory of Immune Microenvironment and Disease, Ministry of Education, Key Laboratory of Cellular and Molecular Immunology in Tianjin, Excellent Talent Project , Tianjin Medical University , Tianjin , China
| | - Xingjie Gao
- a Department of Biochemistry and Molecular Biology, Department of Immunology, School of Basic Medical Sciences , Tianjin Medical University , Tianjin , China.,b Key Laboratory of Immune Microenvironment and Disease, Ministry of Education, Key Laboratory of Cellular and Molecular Immunology in Tianjin, Excellent Talent Project , Tianjin Medical University , Tianjin , China
| | - Jie Yang
- a Department of Biochemistry and Molecular Biology, Department of Immunology, School of Basic Medical Sciences , Tianjin Medical University , Tianjin , China.,b Key Laboratory of Immune Microenvironment and Disease, Ministry of Education, Key Laboratory of Cellular and Molecular Immunology in Tianjin, Excellent Talent Project , Tianjin Medical University , Tianjin , China
| |
Collapse
|
14
|
Li L, Cui Y, Ye L, Zhao Z, Jiang WG, Ji J. Psoriasin overexpression confers drug resistance to cisplatin by activating ERK in gastric cancer. Int J Oncol 2018; 53:1171-1182. [PMID: 29956751 DOI: 10.3892/ijo.2018.4455] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2018] [Accepted: 05/17/2018] [Indexed: 11/06/2022] Open
Abstract
Psoriasin, a member of the S100 multigenic family, which is aberrantly expressed in a variety of human tumors, is considered as an attractive molecular target for cancer treatment. The present study aimed to characterize the role of psoriasin in gastric cancer (GC), the associated pathways through which it contributes to cancer development and progression, and the effect of psoriasin on cellular response to pre-operative chemotherapy in patients with GC. Expression of psoriasin mRNA and protein were analyzed using quantitative polymerase chain reaction and immunohistochemistry of gastric cancer cohorts, respectively. Gastric cancer cell models with differential expression of psoriasin were generated using stable cell lines that overexpressed psoriasin. The in vitro biological functions of the cells in response to psoriasin overexpression and to chemotherapeutic agents were assessed using various cell-based assays. Psoriasin was overexpressed in patients with advanced GC, and high psoriasin levels led to poor clinical outcomes. Increasing psoriasin expression in GC cell lines promoted cell proliferation, migration and invasion in vitro. Furthermore, psoriasin overexpression caused alterations in the levels of epithelial-mesenchymal transition-associated proteins, and activated the extracellular signal-regulated kinase signaling pathway. Additionally, higher levels of psoriasin expression were significantly associated a lack of response to neoadjuvant chemotherapy in patients with GC. Psoriasin overexpression tended to decrease the sensitivity of GC cells to cisplatin, potentially by inhibiting apoptosis or increasing the S-phase population. Taken together, these results indicate that psoriasin may be a promising therapeutic target for GC treatment, and a potential molecular marker to predict patient response to pre-operative chemotherapy.
Collapse
Affiliation(s)
- Liting Li
- Key Laboratory of Carcinogenesis and Translational Research, Department of Gastrointestinal Surgery, Peking University Cancer Hospital and Institute, Peking University, Beijing 100142, P.R. China
| | - Yuxin Cui
- Cardiff China Medical Research Collaborative, Cardiff University School of Medicine, Heath Park, Cardiff CF14 4XN, UK
| | - Lin Ye
- Cardiff China Medical Research Collaborative, Cardiff University School of Medicine, Heath Park, Cardiff CF14 4XN, UK
| | - Zehang Zhao
- Cardiff China Medical Research Collaborative, Cardiff University School of Medicine, Heath Park, Cardiff CF14 4XN, UK
| | - Wen G Jiang
- Cardiff China Medical Research Collaborative, Cardiff University School of Medicine, Heath Park, Cardiff CF14 4XN, UK
| | - Jiafu Ji
- Key Laboratory of Carcinogenesis and Translational Research, Department of Gastrointestinal Surgery, Peking University Cancer Hospital and Institute, Peking University, Beijing 100142, P.R. China
| |
Collapse
|
15
|
Fu X, Zhang C, Meng H, Zhang K, Shi L, Cao C, Wang Y, Su C, Xin L, Ren Y, Zhang W, Sun X, Ge L, Silvennoinen O, Yao Z, Yang X, Yang J. Oncoprotein Tudor-SN is a key determinant providing survival advantage under DNA damaging stress. Cell Death Differ 2018; 25:1625-1637. [PMID: 29459768 DOI: 10.1038/s41418-018-0068-9] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2017] [Revised: 01/11/2018] [Accepted: 01/12/2018] [Indexed: 01/12/2023] Open
Abstract
Herein, Tudor-SN was identified as a DNA damage response (DDR)-related protein that plays important roles in the early stage of DDR. X-ray or laser irradiation could evoke the accumulation of Tudor-SN to DNA damage sites in a poly(ADP-ribosyl)ation-dependent manner via interaction with PARP-1. Additionally, we illustrated that the SN domain of Tudor-SN mediated the association of these two proteins. The accumulated Tudor-SN further recruited SMARCA5 (ATP-dependent chromatin remodeller) and GCN5 (histone acetyltransferase) to DNA damage sites, resulting in chromatin relaxation, and consequently activating the ATM kinase and downstream DNA repair signalling pathways to promote cell survival. Consistently, the loss-of-function of Tudor-SN attenuated the enrichment of SMARCA5, GCN5 and acetylation of histone H3 (acH3) at DNA break sites and abolished chromatin relaxation; as a result, the cells exhibited DNA repair and cell survival deficiency. As Tudor-SN protein is highly expressed in different tumours, it is likely to be involved in the radioresistance of cancer treatment.
Collapse
Affiliation(s)
- Xiao Fu
- Key Laboratory of Immune Microenvironment and Disease, Ministry of Education, Key Laboratory of Cellular and Molecular Immunology in Tianjin, Department of Biochemistry and Molecular Biology, Excellent Talent Project, Department of Immunology, School of Basic Medical Sciences, Tianjin Medical University, 300070, Tianjin, China
| | - Chunyan Zhang
- Key Laboratory of Immune Microenvironment and Disease, Ministry of Education, Key Laboratory of Cellular and Molecular Immunology in Tianjin, Department of Biochemistry and Molecular Biology, Excellent Talent Project, Department of Immunology, School of Basic Medical Sciences, Tianjin Medical University, 300070, Tianjin, China
| | - Hao Meng
- Key Laboratory of Immune Microenvironment and Disease, Ministry of Education, Key Laboratory of Cellular and Molecular Immunology in Tianjin, Department of Biochemistry and Molecular Biology, Excellent Talent Project, Department of Immunology, School of Basic Medical Sciences, Tianjin Medical University, 300070, Tianjin, China
| | - Kai Zhang
- Key Laboratory of Immune Microenvironment and Disease, Ministry of Education, Key Laboratory of Cellular and Molecular Immunology in Tianjin, Department of Biochemistry and Molecular Biology, Excellent Talent Project, Department of Immunology, School of Basic Medical Sciences, Tianjin Medical University, 300070, Tianjin, China
| | - Lei Shi
- Key Laboratory of Immune Microenvironment and Disease, Ministry of Education, Key Laboratory of Cellular and Molecular Immunology in Tianjin, Department of Biochemistry and Molecular Biology, Excellent Talent Project, Department of Immunology, School of Basic Medical Sciences, Tianjin Medical University, 300070, Tianjin, China
| | - Cheng Cao
- Key Laboratory of Immune Microenvironment and Disease, Ministry of Education, Key Laboratory of Cellular and Molecular Immunology in Tianjin, Department of Biochemistry and Molecular Biology, Excellent Talent Project, Department of Immunology, School of Basic Medical Sciences, Tianjin Medical University, 300070, Tianjin, China
| | - Ye Wang
- Key Laboratory of Immune Microenvironment and Disease, Ministry of Education, Key Laboratory of Cellular and Molecular Immunology in Tianjin, Department of Biochemistry and Molecular Biology, Excellent Talent Project, Department of Immunology, School of Basic Medical Sciences, Tianjin Medical University, 300070, Tianjin, China
| | - Chao Su
- Key Laboratory of Immune Microenvironment and Disease, Ministry of Education, Key Laboratory of Cellular and Molecular Immunology in Tianjin, Department of Biochemistry and Molecular Biology, Excellent Talent Project, Department of Immunology, School of Basic Medical Sciences, Tianjin Medical University, 300070, Tianjin, China
| | - Lingbiao Xin
- Key Laboratory of Immune Microenvironment and Disease, Ministry of Education, Key Laboratory of Cellular and Molecular Immunology in Tianjin, Department of Biochemistry and Molecular Biology, Excellent Talent Project, Department of Immunology, School of Basic Medical Sciences, Tianjin Medical University, 300070, Tianjin, China
| | - Yuanyuan Ren
- Key Laboratory of Immune Microenvironment and Disease, Ministry of Education, Key Laboratory of Cellular and Molecular Immunology in Tianjin, Department of Biochemistry and Molecular Biology, Excellent Talent Project, Department of Immunology, School of Basic Medical Sciences, Tianjin Medical University, 300070, Tianjin, China
| | - Wei Zhang
- Key Laboratory of Immune Microenvironment and Disease, Ministry of Education, Key Laboratory of Cellular and Molecular Immunology in Tianjin, Department of Biochemistry and Molecular Biology, Excellent Talent Project, Department of Immunology, School of Basic Medical Sciences, Tianjin Medical University, 300070, Tianjin, China
| | - Xiaoming Sun
- Key Laboratory of Immune Microenvironment and Disease, Ministry of Education, Key Laboratory of Cellular and Molecular Immunology in Tianjin, Department of Biochemistry and Molecular Biology, Excellent Talent Project, Department of Immunology, School of Basic Medical Sciences, Tianjin Medical University, 300070, Tianjin, China
| | - Lin Ge
- Key Laboratory of Immune Microenvironment and Disease, Ministry of Education, Key Laboratory of Cellular and Molecular Immunology in Tianjin, Department of Biochemistry and Molecular Biology, Excellent Talent Project, Department of Immunology, School of Basic Medical Sciences, Tianjin Medical University, 300070, Tianjin, China
| | - Olli Silvennoinen
- Institute of Medical Technology, University of Tampere, Tampere University Hospital, Biokatu 8, 33014, Tampere, Finland
| | - Zhi Yao
- Key Laboratory of Immune Microenvironment and Disease, Ministry of Education, Key Laboratory of Cellular and Molecular Immunology in Tianjin, Department of Biochemistry and Molecular Biology, Excellent Talent Project, Department of Immunology, School of Basic Medical Sciences, Tianjin Medical University, 300070, Tianjin, China
| | - Xi Yang
- Department of Immunology, University of Manitoba, 471 Apotex Centre, 750 McDermot Avenue, Winnipeg, MB, R3E 0T5, Canada.
| | - Jie Yang
- Key Laboratory of Immune Microenvironment and Disease, Ministry of Education, Key Laboratory of Cellular and Molecular Immunology in Tianjin, Department of Biochemistry and Molecular Biology, Excellent Talent Project, Department of Immunology, School of Basic Medical Sciences, Tianjin Medical University, 300070, Tianjin, China.
| |
Collapse
|
16
|
Prognostic Roles of mRNA Expression of S100 in Non-Small-Cell Lung Cancer. BIOMED RESEARCH INTERNATIONAL 2018; 2018:9815806. [PMID: 29607329 PMCID: PMC5828052 DOI: 10.1155/2018/9815806] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/26/2017] [Accepted: 12/19/2017] [Indexed: 12/15/2022]
Abstract
The S100 protein family is involved in cancer cell invasion and metastasis, but its prognostic value in non-small-cell lung cancer (NSCLC) has not been elucidated. In the present study we investigated the prognostic role of mRNA expression of each individual S100 in NSCLC patients through the Kaplan-Meier plotter (KM plotter) database. Expression of 14 members of the S100 family correlated with overall survival (OS) for all NSCLC patients; 18 members were associated with OS in adenocarcinoma, but none were associated with OS in squamous cell carcinoma. In particular, high mRNA expression level of S100B was associated with better OS in NSCLC patients. The prognostic value of S100 according to smoking status, pathological grades, clinical stages, and chemotherapeutic treatment of NSCLC was further assessed. Although the results should be further verified in clinical trials our findings provide new insights into the prognostic roles of S100 proteins in NSCLC and might promote development of S100-targeted inhibitors for the treatment of NSCLC.
Collapse
|
17
|
Xing A, Pan L, Gao J. p100 functions as a metastasis activator and is targeted by tumor suppressing microRNA-320a in lung cancer. Thorac Cancer 2018; 9:152-158. [PMID: 29159900 PMCID: PMC5754290 DOI: 10.1111/1759-7714.12564] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2017] [Revised: 10/23/2017] [Accepted: 10/23/2017] [Indexed: 11/27/2022] Open
Abstract
BACKGROUND Lung cancer is among the most frequently diagnosed types of cancer worldwide, with high morbidity and mortality. Metastasis accounts for the deadliest and most poorly understood feature of lung cancer. Herein, we demonstrate that SND1 (also known as p100) acts as a candidate metastasis activator and is targeted by microRNA-320a (miR-320a) in lung cancer cells. METHODS p100 expression in lung cancer cell lines and tissues was determined by quantitative real time-PCR and Western blot. RNA interference was applied to investigate the functions of p100 in lung cancer cell migration, reflected by wound healing and transwell assays. Luciferase reporter assay, quantitative real time-PCR, and Western blot were finally used to examine miR-320a targeting of p100 in lung cancer cells. RESULTS p100 expression was significantly higher in lung cancer cell lines and tissues compared to normal human bronchial epithelial cells and matched normal lung tissues. Downregulation of p100 by RNA interference obviously inhibited lung cancer cell migration in vitro. Moreover, we validated p100 as a direct target of miR-320a, a tumor suppressing microRNA repressing lung cancer cell migration. Finally, we showed an inversely expressed correlation between p100 and miR-320a in tested lung cancer tissues and cell lines, both of which acted as important prognostic factors in lung cancer. CONCLUSION Our findings identify that p100, targeted by tumor suppressing miR-320a, is a key metastasis activator in lung cancer, and both p100 and miR-320a could be considered as biomarkers for prognosis of lung cancer patients.
Collapse
Affiliation(s)
- Aimin Xing
- Respiratory DepartmentTianjin 4th Center HospitalTianjinChina
| | - Li Pan
- Respiratory DepartmentTianjin 4th Center HospitalTianjinChina
| | - Jingzhen Gao
- Respiratory DepartmentTianjin 4th Center HospitalTianjinChina
| |
Collapse
|
18
|
Armengol S, Arretxe E, Enzunza L, Llorente I, Mendibil U, Navarro-Imaz H, Ochoa B, Chico Y, Martínez MJ. SREBP-2-driven transcriptional activation of human SND1 oncogene. Oncotarget 2017; 8:108181-108194. [PMID: 29296233 PMCID: PMC5746135 DOI: 10.18632/oncotarget.22569] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2017] [Accepted: 09/22/2017] [Indexed: 01/28/2023] Open
Abstract
Upregulation of Staphylococcal nuclease and tudor domain containing 1 (SND1) is linked to cancer progression and metastatic spread. Increasing evidence indicates that SND1 plays a role in lipid homeostasis. Recently, it has been shown that SND1-overexpressing hepatocellular carcinoma cells present an increased de novo cholesterol synthesis and cholesteryl ester accumulation. Here we reveal that SND1 oncogene is a novel target for SREBPs. Exposure of HepG2 cells to the cholesterol-lowering drug simvastatin or to a lipoprotein-deficient medium triggers SREBP-2 activation and increases SND1 promoter activity and transcript levels. Similar increases in SND1 promoter activity and mRNA are mimicked by overexpressing nuclear SREBP-2 through expression vector transfection. Conversely, SREBP-2 suppression with specific siRNA or the addition of cholesterol/25-hydroxycholesterol to cell culture medium reduces transcriptional activity of SND1 promoter and SND1 mRNA abundance. Chromatin immunoprecipitation assays and site-directed mutagenesis show that SREBP-2 binds to the SND1 proximal promoter in a region containing one SRE and one E-box motif which are critical for maximal transcriptional activity under basal conditions. SREBP-1, in contrast, binds exclusively to the SRE element. Remarkably, while ectopic expression of SREBP-1c or -1a reduces SND1 promoter activity, knocking-down of SREBP-1 enhances SND1 mRNA and protein levels but failed to affect SND1 promoter activity. These findings reveal that SREBP-2 and SREBP-1 bind to specific sites in SND1 promoter and regulate SND1 transcription in opposite ways; it is induced by SREBP-2 activating conditions and repressed by SREBP-1 overexpression. We anticipate the contribution of a SREBPs/SND1 pathway to lipid metabolism reprogramming of human hepatoma cells.
Collapse
Affiliation(s)
- Sandra Armengol
- Lipids & Liver Research Group, Department of Physiology, Faculty of Medicine and Nursing, University of the Basque Country UPV/EHU, Barrio Sarriena s/n, 48940 Leioa, Vizcaya, Spain
| | - Enara Arretxe
- Lipids & Liver Research Group, Department of Physiology, Faculty of Medicine and Nursing, University of the Basque Country UPV/EHU, Barrio Sarriena s/n, 48940 Leioa, Vizcaya, Spain
| | - Leire Enzunza
- Lipids & Liver Research Group, Department of Physiology, Faculty of Medicine and Nursing, University of the Basque Country UPV/EHU, Barrio Sarriena s/n, 48940 Leioa, Vizcaya, Spain
| | - Irati Llorente
- Lipids & Liver Research Group, Department of Physiology, Faculty of Medicine and Nursing, University of the Basque Country UPV/EHU, Barrio Sarriena s/n, 48940 Leioa, Vizcaya, Spain
| | - Unai Mendibil
- Lipids & Liver Research Group, Department of Physiology, Faculty of Medicine and Nursing, University of the Basque Country UPV/EHU, Barrio Sarriena s/n, 48940 Leioa, Vizcaya, Spain
| | - Hiart Navarro-Imaz
- Lipids & Liver Research Group, Department of Physiology, Faculty of Medicine and Nursing, University of the Basque Country UPV/EHU, Barrio Sarriena s/n, 48940 Leioa, Vizcaya, Spain
| | - Begoña Ochoa
- Lipids & Liver Research Group, Department of Physiology, Faculty of Medicine and Nursing, University of the Basque Country UPV/EHU, Barrio Sarriena s/n, 48940 Leioa, Vizcaya, Spain
| | - Yolanda Chico
- Lipids & Liver Research Group, Department of Physiology, Faculty of Medicine and Nursing, University of the Basque Country UPV/EHU, Barrio Sarriena s/n, 48940 Leioa, Vizcaya, Spain
| | - María José Martínez
- Lipids & Liver Research Group, Department of Physiology, Faculty of Medicine and Nursing, University of the Basque Country UPV/EHU, Barrio Sarriena s/n, 48940 Leioa, Vizcaya, Spain
| |
Collapse
|
19
|
Zhu W, Tan S. Tudor-SN protein expression in colorectal cancer and its association with clinical characteristics. Open Life Sci 2017. [DOI: 10.1515/biol-2017-0028] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
AbstractObjectivesTudor-SN protein (SND1) is known to be up-regulated in some types of human malignancies and functions as an oncogene. The objective of our study was to investigate the expression and prognostic value of SND1 in human colorectal cancer (CRC).MethodsReal-time PCR and western blot were performed to examine the SND1 expression in human CRC and their corresponding non-cancerous colon tissues from 42 patients. Its clinical significance was evaluated by analyzing its expression with multiple pathological characters of CRC patients. Finally, a Kaplan-Meier survival curve was derived for SND1 gene expression among these CRC patients.ResultsWe found a significantly increased expression of SND1 mRNA and protein in tissue samples of CRC when compared to those in the paired normal adjacent colon tissues. High SND1 expression was positively correlated with higher tumor grades, aggressive N1+N2 nodal status and poor differentiation. Additionally, the overall survival rate in CRC patients with higher expression of SND1 was significantly shorter than that with lower SND1 expression.ConclusionOur findings suggested that SND1 might act as an important agent in the CRC carcinogenesis and predicted worse outcomes. The high expression of SND1 could be used as a novel predictive and prognostic marker of CRC.
Collapse
Affiliation(s)
- Weifang Zhu
- Department of Gastroenterology, Renmin Hospital of Wuhan University, 430060, Wuhan City, PR China
- Department of Gastroenterology, Tianmen First People‘s Hospital of Hubei Province, Hubei, 431700, PR China
| | - Shiyun Tan
- Department of Gastroenterology, Renmin Hospital of Wuhan University, PR China, No.99 Zhangzhidong Road, Wuchang District, Hubei Province, Wuhan City, 430060, PR China
| |
Collapse
|
20
|
Li L, Liang S, Wasylishen AR, Zhang Y, Yang X, Zhou B, Shan L, Han X, Mu T, Wang G, Xiong S. PLA2G16 promotes osteosarcoma metastasis and drug resistance via the MAPK pathway. Oncotarget 2017; 7:18021-35. [PMID: 26933804 PMCID: PMC4951268 DOI: 10.18632/oncotarget.7694] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2015] [Accepted: 02/11/2016] [Indexed: 11/30/2022] Open
Abstract
The prognosis of metastatic osteosarcoma is dismal and a better understanding of the mechanisms underlying disease progression is essential to improve treatment options and patient outcomes. We previously demonstrated Pla2g16 overexpression in mouse osteosarcoma contributes to metastasis phenotypes and increased expression of PLA2G16 is associated with metastasis and poor prognosis in human tumors. To further examine the mechanisms through which PLA2G16 contributes to human osteosarcoma metastasis and explore the potential of PLA2G16 as a therapeutic target in osteosarcoma, we generated a panel of human osteosarcoma cell lines expressing different levels of PLA2G16. The functional analyses of these cell lines demonstrated high levels of PLA2G16 expression increased osteosarcoma cell migration, invasion, clonogenic survival, and anchorage-independent colony formation. Importantly, this activity was dependent on the phospholipase activity of PLA2G16. Additionally, PLA2G16 overexpression decreased the sensitivity of cells to a panel of chemotherapeutic agents. Analysis of downstream pathways revealed the pro-metastasis functions of PLA2G16 were mediated through the MAPK pathway, as knockdown of PLA2G16 decreased ERK1/2 phosphorylation and pharmacological inhibition of MEK significantly repressed PLA2G16 mediated cell migration and clonogenic survival. Furthermore, PLA2G16 overexpression promoted xenograft tumor growth in vivo, and these tumors exhibit increased ERK1/2 phosphorylation. Lastly, the expression of PLA2G16 is strongly correlated with the increased ERK1/2 phosphorylation in human osteosarcoma samples, and the combined lesions are associated with reduced overall and metastasis-free survival. Collectively, these results demonstrate increased PLA2G16 expression activates the MAPK pathway to enhance osteosarcoma metastasis and may be a novel therapeutic target for these cancers.
Collapse
Affiliation(s)
- Lin Li
- Institute of Cancer Stem Cell, Dalian Medical University Cancer Center, Dalian, China
| | - Shoulei Liang
- Department of Bone and Soft Tissue Tumors, Tianjin Medical University Cancer Institute and Hospital, National Clinical Research Center for Cancer, Key Laboratory of Cancer Prevention and Therapy, Tianjin, China
| | - Amanda R Wasylishen
- Department of Genetics, The University of Texas MD Anderson Cancer Center, Houston, Texas, United States of America
| | - Yanqin Zhang
- Institute of Cancer Stem Cell, Dalian Medical University Cancer Center, Dalian, China
| | - Xueli Yang
- Institute of Cancer Stem Cell, Dalian Medical University Cancer Center, Dalian, China
| | - Bingzheng Zhou
- Institute of Cancer Stem Cell, Dalian Medical University Cancer Center, Dalian, China
| | - Luling Shan
- Department of Bone and Soft Tissue Tumors, Tianjin Medical University Cancer Institute and Hospital, National Clinical Research Center for Cancer, Key Laboratory of Cancer Prevention and Therapy, Tianjin, China
| | - Xiuxin Han
- Department of Bone and Soft Tissue Tumors, Tianjin Medical University Cancer Institute and Hospital, National Clinical Research Center for Cancer, Key Laboratory of Cancer Prevention and Therapy, Tianjin, China
| | - Tianyang Mu
- Institute of Cancer Stem Cell, Dalian Medical University Cancer Center, Dalian, China
| | - Guowen Wang
- Department of Bone and Soft Tissue Tumors, Tianjin Medical University Cancer Institute and Hospital, National Clinical Research Center for Cancer, Key Laboratory of Cancer Prevention and Therapy, Tianjin, China
| | - Shunbin Xiong
- Institute of Cancer Stem Cell, Dalian Medical University Cancer Center, Dalian, China.,Department of Genetics, The University of Texas MD Anderson Cancer Center, Houston, Texas, United States of America
| |
Collapse
|
21
|
Su C, Gao X, Yang W, Zhao Y, Fu X, Cui X, Zhang C, Xin L, Ren Y, Li L, Shui W, Yang X, Wei M, Yang J. Phosphorylation of Tudor-SN, a novel substrate of JNK, is involved in the efficient recruitment of Tudor-SN into stress granules. BIOCHIMICA ET BIOPHYSICA ACTA-MOLECULAR CELL RESEARCH 2016; 1864:562-571. [PMID: 28011284 DOI: 10.1016/j.bbamcr.2016.12.018] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/09/2016] [Revised: 12/12/2016] [Accepted: 12/18/2016] [Indexed: 12/24/2022]
Abstract
Posttranslational modifications of certain stress granule (SG) proteins are closely related to the assembly of SGs, a type of cytoplasmic foci structure. Our previous studies revealed that the Tudor staphylococcal nuclease (Tudor-SN) protein participates in the formation of SGs. However, the functional significance of potential Tudor-SN modifications during stress has not been reported. In this study, we demonstrated that the Tudor-SN protein was phosphorylated at threonine 103 (T103) upon stimulation with arsenite. In addition, c-Jun N-terminal kinase (JNK) was found to be responsible for Tudor-SN phosphorylation at the T103 site. We further illustrated that either a T103A mutation or the suppression of phosphorylation of T103 by the JNK inhibitor SP600125 inhibited the efficient recruitment of Tudor-SN into SGs. In addition, the T103A mutation could affect the physical binding of Tudor-SN with the G3BP (Ras-GAP SH3 domain-binding protein) protein but not with the HuR (Hu antigen R) protein and AGTR1-3'UTR (3'-untranslated region of angiotensin II receptor, type 1) mRNA cargo. These data suggested that JNK-enhanced Tudor-SN phosphorylation promotes the interaction between Tudor-SN and G3BP and facilitates the efficient recruitment of Tudor-SN into SGs under conditions of sodium arsenite-induced oxidative stress. This finding provides novel insights into the physiological function of Tudor-SN modification.
Collapse
Affiliation(s)
- Chao Su
- Department of Biochemistry and Molecular Biology, Department of Immunology, School of Basic Medical Sciences, Tianjin Medical University, Tianjin 300070, China; Laboratory of Molecular Immunology, Research Center of Basic Medical Science, Tianjin Medical University, Tianjin 300070, China; Tianjin Key Laboratory of Cellular and Molecular Immunology, Tianjin Medical University, Tianjin 300070, China; Key Laboratory of Educational Ministry of China, Tianjin Medical University, Tianjin 300070, China
| | - Xingjie Gao
- Department of Biochemistry and Molecular Biology, Department of Immunology, School of Basic Medical Sciences, Tianjin Medical University, Tianjin 300070, China; Laboratory of Molecular Immunology, Research Center of Basic Medical Science, Tianjin Medical University, Tianjin 300070, China; Tianjin Key Laboratory of Cellular and Molecular Immunology, Tianjin Medical University, Tianjin 300070, China; Key Laboratory of Educational Ministry of China, Tianjin Medical University, Tianjin 300070, China
| | - Wendong Yang
- Department of Biochemistry and Molecular Biology, Department of Immunology, School of Basic Medical Sciences, Tianjin Medical University, Tianjin 300070, China; Tianjin Key Laboratory of Cellular and Molecular Immunology, Tianjin Medical University, Tianjin 300070, China; Key Laboratory of Educational Ministry of China, Tianjin Medical University, Tianjin 300070, China
| | - Yali Zhao
- Department of Biochemistry and Molecular Biology, Department of Immunology, School of Basic Medical Sciences, Tianjin Medical University, Tianjin 300070, China; Tianjin Key Laboratory of Cellular and Molecular Immunology, Tianjin Medical University, Tianjin 300070, China; Key Laboratory of Educational Ministry of China, Tianjin Medical University, Tianjin 300070, China
| | - Xue Fu
- Department of Biochemistry and Molecular Biology, Department of Immunology, School of Basic Medical Sciences, Tianjin Medical University, Tianjin 300070, China; Tianjin Key Laboratory of Cellular and Molecular Immunology, Tianjin Medical University, Tianjin 300070, China; Key Laboratory of Educational Ministry of China, Tianjin Medical University, Tianjin 300070, China
| | - Xiaoteng Cui
- Department of Biochemistry and Molecular Biology, Department of Immunology, School of Basic Medical Sciences, Tianjin Medical University, Tianjin 300070, China; Tianjin Key Laboratory of Cellular and Molecular Immunology, Tianjin Medical University, Tianjin 300070, China; Key Laboratory of Educational Ministry of China, Tianjin Medical University, Tianjin 300070, China
| | - Chunyan Zhang
- Department of Biochemistry and Molecular Biology, Department of Immunology, School of Basic Medical Sciences, Tianjin Medical University, Tianjin 300070, China; Tianjin Key Laboratory of Cellular and Molecular Immunology, Tianjin Medical University, Tianjin 300070, China; Key Laboratory of Educational Ministry of China, Tianjin Medical University, Tianjin 300070, China
| | - Lingbiao Xin
- Department of Biochemistry and Molecular Biology, Department of Immunology, School of Basic Medical Sciences, Tianjin Medical University, Tianjin 300070, China; Tianjin Key Laboratory of Cellular and Molecular Immunology, Tianjin Medical University, Tianjin 300070, China; Key Laboratory of Educational Ministry of China, Tianjin Medical University, Tianjin 300070, China
| | - Yuanyuan Ren
- Department of Biochemistry and Molecular Biology, Department of Immunology, School of Basic Medical Sciences, Tianjin Medical University, Tianjin 300070, China; Tianjin Key Laboratory of Cellular and Molecular Immunology, Tianjin Medical University, Tianjin 300070, China; Key Laboratory of Educational Ministry of China, Tianjin Medical University, Tianjin 300070, China
| | - Lixin Li
- High-throughput Molecular Drug Discovery Center, Tianjin Joint Academy of Biotechnology and Medicine, Tianjin 300457, China
| | - Wenqing Shui
- High-throughput Molecular Drug Discovery Center, Tianjin Joint Academy of Biotechnology and Medicine, Tianjin 300457, China
| | - Xi Yang
- Department of Immunology, University of Manitoba, 471 Apotex Centre, 750 McDermot Avenue, Winnipeg R3E 0T5, Canada
| | - Minxin Wei
- Department of Cardiovascular Surgery, Tianjin Medical University General Hospital, Tianjin 300070, China.
| | - Jie Yang
- Department of Biochemistry and Molecular Biology, Department of Immunology, School of Basic Medical Sciences, Tianjin Medical University, Tianjin 300070, China; Laboratory of Molecular Immunology, Research Center of Basic Medical Science, Tianjin Medical University, Tianjin 300070, China; Tianjin Key Laboratory of Cellular and Molecular Immunology, Tianjin Medical University, Tianjin 300070, China; Key Laboratory of Educational Ministry of China, Tianjin Medical University, Tianjin 300070, China.
| |
Collapse
|
22
|
Tudor staphylococcal nuclease: biochemistry and functions. Cell Death Differ 2016; 23:1739-1748. [PMID: 27612014 DOI: 10.1038/cdd.2016.93] [Citation(s) in RCA: 55] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2016] [Accepted: 08/01/2016] [Indexed: 12/17/2022] Open
Abstract
Tudor staphylococcal nuclease (TSN, also known as Tudor-SN, SND1 or p100) is an evolutionarily conserved protein with invariant domain composition, represented by tandem repeat of staphylococcal nuclease domains and a tudor domain. Conservation along significant evolutionary distance, from protozoa to plants and animals, suggests important physiological functions for TSN. It is known that TSN is critically involved in virtually all pathways of gene expression, ranging from transcription to RNA silencing. Owing to its high protein-protein binding affinity coexistent with enzymatic activity, TSN can exert its biochemical function by acting as both a scaffolding molecule of large multiprotein complexes and/or as a nuclease. TSN is indispensible for normal development and stress resistance, whereas its increased expression is closely associated with various types of cancer. Thus, TSN is an attractive target for anti-cancer therapy and a potent tumor marker. Considering ever increasing interest to further understand a multitude of TSN-mediated processes and a mechanistic role of TSN in these processes, here we took an attempt to summarize and update the available information about this intriguing multifunctional protein.
Collapse
|
23
|
Navarro-Imaz H, Rueda Y, Fresnedo O. SND1 overexpression deregulates cholesterol homeostasis in hepatocellular carcinoma. Biochim Biophys Acta Mol Cell Biol Lipids 2016; 1861:988-996. [DOI: 10.1016/j.bbalip.2016.05.011] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2015] [Revised: 05/18/2016] [Accepted: 05/24/2016] [Indexed: 01/06/2023]
|