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Ma S, Qin Y, Ren W. Insulin-like growth factor 2 mRNA-binding protein 1 (IGF2BP1) in hematological diseases. Mol Med 2024; 30:165. [PMID: 39342091 PMCID: PMC11439276 DOI: 10.1186/s10020-024-00936-2] [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: 12/01/2023] [Accepted: 09/13/2024] [Indexed: 10/01/2024] Open
Abstract
The oncofetal mRNA-binding protein IGF2BP1 belongs to a conserved family of RNA-binding proteins. It primarily promotes RNA stability, regulates translation and RNA localization, and mediates gene expression through its downstream effectors. Numerous studies have demonstrated that IGF2BP1 plays crucial roles in embryogenesis and carcinogenesis. IGF2BP1-modulated cell proliferation, invasion, and chemo-resistance in solid tumors have attracted researchers' attention. Additionally, several studies have highlighted the importance of IGF2BP1 in hematologic malignancies and hematological genetic diseases, positioning it as a promising therapeutic target for hematological disorders. However, there is a lack of systematic summaries regarding the IGF2BP1 gene within the hematological field. In this review, we provide a comprehensive overview of the discovery and molecular structure of IGF2BP1, along with recent studies on its role in regulating embryogenesis. We also focus on the mechanisms by which IGF2BP1 regulates hematological malignancies through its interactions with its targeted mRNAs. Furthermore, we systematically elucidate the function and mechanism of IGF2BP1 in promoting fetal hemoglobin expression in adult hematopoietic stem/progenitor cells. Finally, we discuss the limitations and challenges of IGF2BP1 as a therapeutic target, offering insights into its prospects.
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Affiliation(s)
- Shuangping Ma
- Institutes of Health Central Plains, Xinxiang Medical University, Xinxiang, 453003, China.
| | - Yiran Qin
- Institutes of Health Central Plains, Xinxiang Medical University, Xinxiang, 453003, China
| | - Wenjie Ren
- Institutes of Health Central Plains, Xinxiang Medical University, Xinxiang, 453003, China.
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2
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Zhou C, Ma J, Luo W, Hu J, Chen J, Liang S, He S. A Novel Platinum Resistance-Related Immune Gene Signature for Overall Survival Prediction in Patients with Ovarian Cancer. Biochem Genet 2024; 62:112-124. [PMID: 37270714 PMCID: PMC10901932 DOI: 10.1007/s10528-023-10379-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2023] [Accepted: 04/10/2023] [Indexed: 06/05/2023]
Abstract
Ovarian cancer (OV) is a highly heterogeneous gynecological tumor that makes the prognostic prediction challenging. Resistance to platinum-based chemotherapy is associated with a poor prognosis in OV. There seems to be an overlap between molecular mechanisms responsible for platinum resistance and immunogenicity in OV. However, the predictive role of platinum resistance-related immune genes for OV prognosis needs to be further explored. In our study, the mRNA expression data of OV patients with corresponding clinical information were collected from The Cancer Genome Atlas (TCGA) cohort and International Cancer Genome Consortium (ICGC) cohort. A multigene signature was constructed for OV patients in the TCGA cohort using the least absolute shrinkage and selection operator (LASSO) Cox regression model according to the optimal value of λ and was validated in the ICGC cohort. Furthermore, we performed functional analysis to explore the immune status between low- and high-risk groups based on the median value of the risk score for the multigene signature. Our data showed that there were 41.1% of the platinum resistance-related genes which differentially expressed between immune score low- and high-OV patients in the TCGA cohort. Univariate Cox regression analysis identified 30 differentially expressed genes (DEGs) associated with overall survival (OS) (P < 0.05). 14 genes were identified to construct a novel platinum resistance-related immune model for classifying OV patients into the low- and high- risk groups. Patients in the low-risk group showed significantly higher OS than those in the high-risk group (P < 0.0001 in the both TCGA and ICGC cohort), which was associated with different immune status for the two risk groups. A novel platinum resistance-related immune model can be used for prognostic prediction in OV. Targeting tumor immunity may be a therapeutic alternative for OV with platinum resistance.
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Affiliation(s)
- Chenfei Zhou
- Department of Gynecology, Guangdong Provincial People's Hospital (Guangdong Academy of Medical Sciences), Southern Medical University, Guangzhou, 510080, Guangdong, People's Republic of China
- Guangdong Provincial People's Hospital, School of Medical, South China University of Technology, Guangzhou, 510080, Guangdong, People's Republic of China
| | - Junnan Ma
- Department of Gynecology, Guangdong Provincial People's Hospital (Guangdong Academy of Medical Sciences), Southern Medical University, Guangzhou, 510080, Guangdong, People's Republic of China
- Guangdong Cardiovascular Institute, Guangzhou, 510080, Guangdong, People's Republic of China
| | - Wanjun Luo
- Department of Obstetrics and Gynecology, The First Affiliated Hospital, Sun Yat-Sen University, 510080, Guangzhou, Guangdong, People's Republic of China
| | - Jiemei Hu
- Department of Gynecology, Guangdong Provincial People's Hospital (Guangdong Academy of Medical Sciences), Southern Medical University, Guangzhou, 510080, Guangdong, People's Republic of China
- Guangdong Provincial People's Hospital, School of Medical, South China University of Technology, Guangzhou, 510080, Guangdong, People's Republic of China
| | - Jing Chen
- Department of Gynecology, Guangdong Provincial People's Hospital (Guangdong Academy of Medical Sciences), Southern Medical University, Guangzhou, 510080, Guangdong, People's Republic of China
- Guangdong Provincial People's Hospital, School of Medical, South China University of Technology, Guangzhou, 510080, Guangdong, People's Republic of China
| | - Suiying Liang
- Department of Gynecology, Guangdong Provincial People's Hospital (Guangdong Academy of Medical Sciences), Southern Medical University, Guangzhou, 510080, Guangdong, People's Republic of China
- Guangdong Provincial People's Hospital, School of Medical, South China University of Technology, Guangzhou, 510080, Guangdong, People's Republic of China
| | - Shanyang He
- Department of Gynecology, Guangdong Provincial People's Hospital (Guangdong Academy of Medical Sciences), Southern Medical University, Guangzhou, 510080, Guangdong, People's Republic of China.
- Guangdong Provincial People's Hospital, School of Medical, South China University of Technology, Guangzhou, 510080, Guangdong, People's Republic of China.
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3
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Ward BJH, Prasai K, Schaal DL, Wang J, Scott RS. A distinct isoform of lymphoid enhancer binding factor 1 (LEF1) epigenetically restricts EBV reactivation to maintain viral latency. PLoS Pathog 2023; 19:e1011873. [PMID: 38113273 PMCID: PMC10763950 DOI: 10.1371/journal.ppat.1011873] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2023] [Revised: 01/03/2024] [Accepted: 11/29/2023] [Indexed: 12/21/2023] Open
Abstract
As a human tumor virus, EBV is present as a latent infection in its associated malignancies where genetic and epigenetic changes have been shown to impede cellular differentiation and viral reactivation. We reported previously that levels of the Wnt signaling effector, lymphoid enhancer binding factor 1 (LEF1) increased following EBV epithelial infection and an epigenetic reprogramming event was maintained even after loss of the viral genome. Elevated LEF1 levels are also observed in nasopharyngeal carcinoma and Burkitt lymphoma. To determine the role played by LEF1 in the EBV life cycle, we used in silico analysis of EBV type 1 and 2 genomes to identify over 20 Wnt-response elements, which suggests that LEF1 may bind directly to the EBV genome and regulate the viral life cycle. Using CUT&RUN-seq, LEF1 was shown to bind the latent EBV genome at various sites encoding viral lytic products that included the immediate early transactivator BZLF1 and viral primase BSLF1 genes. The LEF1 gene encodes various long and short protein isoforms. siRNA depletion of specific LEF1 isoforms revealed that the alternative-promoter derived isoform with an N-terminal truncation (ΔN LEF1) transcriptionally repressed lytic genes associated with LEF1 binding. In addition, forced expression of the ΔN LEF1 isoform antagonized EBV reactivation. As LEF1 repression requires histone deacetylase activity through either recruitment of or direct intrinsic histone deacetylase activity, siRNA depletion of LEF1 resulted in increased histone 3 lysine 9 and lysine 27 acetylation at LEF1 binding sites and across the EBV genome. Taken together, these results indicate a novel role for LEF1 in maintaining EBV latency and restriction viral reactivation via repressive chromatin remodeling of critical lytic cycle factors.
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Affiliation(s)
- B. J. H. Ward
- Department of Microbiology and Immunology, Louisiana State University Health Sciences Center-Shreveport, Shreveport, Louisiana, United States of America
- Feist-Weiller Cancer Center, Louisiana State University Health Sciences Center-Shreveport, Shreveport, Louisiana, United States of America
- Center for Applied Immunology and Pathological Processes, Louisiana State University Health Sciences Center-Shreveport, Shreveport, Louisiana, United States of America
| | - Kanchanjunga Prasai
- Department of Microbiology and Immunology, Louisiana State University Health Sciences Center-Shreveport, Shreveport, Louisiana, United States of America
| | - Danielle L. Schaal
- Department of Microbiology and Immunology, Louisiana State University Health Sciences Center-Shreveport, Shreveport, Louisiana, United States of America
- Feist-Weiller Cancer Center, Louisiana State University Health Sciences Center-Shreveport, Shreveport, Louisiana, United States of America
- Center for Applied Immunology and Pathological Processes, Louisiana State University Health Sciences Center-Shreveport, Shreveport, Louisiana, United States of America
| | - Jian Wang
- Department of Microbiology and Immunology, Louisiana State University Health Sciences Center-Shreveport, Shreveport, Louisiana, United States of America
- Feist-Weiller Cancer Center, Louisiana State University Health Sciences Center-Shreveport, Shreveport, Louisiana, United States of America
- Center for Applied Immunology and Pathological Processes, Louisiana State University Health Sciences Center-Shreveport, Shreveport, Louisiana, United States of America
| | - Rona S. Scott
- Department of Microbiology and Immunology, Louisiana State University Health Sciences Center-Shreveport, Shreveport, Louisiana, United States of America
- Feist-Weiller Cancer Center, Louisiana State University Health Sciences Center-Shreveport, Shreveport, Louisiana, United States of America
- Center for Applied Immunology and Pathological Processes, Louisiana State University Health Sciences Center-Shreveport, Shreveport, Louisiana, United States of America
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4
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Otis JP, Mowry KL. Hitting the mark: Localization of mRNA and biomolecular condensates in health and disease. WILEY INTERDISCIPLINARY REVIEWS. RNA 2023; 14:e1807. [PMID: 37393916 PMCID: PMC10758526 DOI: 10.1002/wrna.1807] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/06/2023] [Revised: 05/29/2023] [Accepted: 06/06/2023] [Indexed: 07/04/2023]
Abstract
Subcellular mRNA localization is critical to a multitude of biological processes such as development of cellular polarity, embryogenesis, tissue differentiation, protein complex formation, cell migration, and rapid responses to environmental stimuli and synaptic depolarization. Our understanding of the mechanisms of mRNA localization must now be revised to include formation and trafficking of biomolecular condensates, as several biomolecular condensates that transport and localize mRNA have recently been discovered. Disruptions in mRNA localization can have catastrophic effects on developmental processes and biomolecular condensate biology and have been shown to contribute to diverse diseases. A fundamental understanding of mRNA localization is essential to understanding how aberrations in this biology contribute the etiology of numerous cancers though support of cancer cell migration and biomolecular condensate dysregulation, as well as many neurodegenerative diseases, through misregulation of mRNA localization and biomolecular condensate biology. This article is categorized under: RNA Export and Localization > RNA Localization RNA in Disease and Development > RNA in Disease RNA in Disease and Development > RNA in Development.
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Affiliation(s)
- Jessica P. Otis
- Department of Molecular Biology, Cell Biology, and Biochemistry, Brown University, Providence, RI, United States, 02912
| | - Kimberly L. Mowry
- Department of Molecular Biology, Cell Biology, and Biochemistry, Brown University, Providence, RI, United States, 02912
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5
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Hou Y, Yu W, Wu G, Wang Z, Leng S, Dong M, Li N, Chen L. Carcinogenesis promotion in oral squamous cell carcinoma: KDM4A complex-mediated gene transcriptional suppression by LEF1. Cell Death Dis 2023; 14:510. [PMID: 37553362 PMCID: PMC10409759 DOI: 10.1038/s41419-023-06024-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2023] [Revised: 07/20/2023] [Accepted: 07/27/2023] [Indexed: 08/10/2023]
Abstract
Oral squamous cell carcinoma (OSCC) is the most prevalent cancer of the mouth, characterised by rapid progression and poor prognosis. Hence, an urgent need exists for the development of predictive targets for early diagnosis, prognosis determination, and clinical therapy. Dysregulation of lymphoid enhancer-binding factor 1 (LEF1), an important transcription factor involved in the Wnt-β-catenin pathway, contributes to the poor prognosis of OSCC. Herein, we aimed to explore the correlation between LEF1 and histone lysine demethylase 4 A (KDM4A). Results show that the KDM4A complex is recruited by LEF1 and specifically binds the LATS2 promoter region, thereby inhibiting its expression, and consequently promoting cell proliferation and impeding apoptosis in OSCC. We also established NOD/SCID mouse xenograft models using CAL-27 cells to conduct an in vivo analysis of the roles of LEF1 and KDM4A in tumour growth, and our findings show that cells stably suppressing LEF1 or KDM4A have markedly decreased tumour-initiating capacity. Overall, the results of this study demonstrate that LEF1 plays a pivotal role in OSCC development and has potential to serve as a target for early diagnosis and treatment of OSCC.
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Affiliation(s)
- Yiming Hou
- Department of Orthodontics, School and Hospital of Stomatology, Cheeloo College of Medicine, Shandong University & Shandong Key Laboratory of Oral Tissue Regeneration & Shandong Engineering Laboratory for Dental Materials and Oral Tissue Regeneration & Shandong Provincial Clinical Research Center for Oral Diseases, Jinan, Shandong, 250012, China
| | - Wenqian Yu
- Research Center of Translational Medicine, Central Hospital Affiliated to Shandong First Medical University, Jinan, Shandong, 250013, P. R. China
- Department of Otolaryngology-Head and Neck Surgery, Shandong Provincial ENT Hospital, Shandong University, Jinan, Shandong, 250022, China
- Center of Clinical Laboratory, Shandong Second Provincial General Hospital, Jinan, Shandong, 250022, China
| | - Gaoyi Wu
- School of Stomatology, Heilongjiang Key Lab of Oral Biomedicine Materials and Clinical Application & Experimental Center for Stomatology Engineering, Jiamusi University, Jiamusi, Heilongjiang, 154007, China
| | - Zhaoling Wang
- Department of Oral and Maxillofacial Surgery, School and Hospital of Stomatology, Cheeloo College of Medicine, Shandong University & Shandong Key Laboratory of Oral Tissue Regeneration & Shandong Engineering Laboratory for Dental Materials and Oral Tissue Regeneration & Shandong Provincial Clinical Research Center for Oral Diseases, Jinan, Shandong, 250012, China
| | - Shuai Leng
- Research Center of Translational Medicine, Central Hospital Affiliated to Shandong First Medical University, Jinan, Shandong, 250013, P. R. China
| | - Ming Dong
- School of Stomatology, Heilongjiang Key Lab of Oral Biomedicine Materials and Clinical Application & Experimental Center for Stomatology Engineering, Jiamusi University, Jiamusi, Heilongjiang, 154007, China
| | - Na Li
- Department of Otolaryngology-Head and Neck Surgery, Shandong Provincial ENT Hospital, Shandong University, Jinan, Shandong, 250022, China.
- Center of Clinical Laboratory, Shandong Second Provincial General Hospital, Jinan, Shandong, 250022, China.
| | - Lei Chen
- Department of Orthodontics, School and Hospital of Stomatology, Cheeloo College of Medicine, Shandong University & Shandong Key Laboratory of Oral Tissue Regeneration & Shandong Engineering Laboratory for Dental Materials and Oral Tissue Regeneration & Shandong Provincial Clinical Research Center for Oral Diseases, Jinan, Shandong, 250012, China.
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6
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Jena SK, Das S, Chakraborty S, Ain R. Molecular determinants of epithelial mesenchymal transition in mouse placenta and trophoblast stem cell. Sci Rep 2023; 13:10978. [PMID: 37414855 PMCID: PMC10325982 DOI: 10.1038/s41598-023-37977-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2023] [Accepted: 06/30/2023] [Indexed: 07/08/2023] Open
Abstract
Trophectoderm cells of the blastocyst are the precursor of the placenta that is comprised of trophoblast, endothelial and smooth muscle cells. Since trophoectoderm cells are epithelial in nature, epithelial mesenchymal transition (EMT) of trophoblast stem (TS) cells might play pivotal role in placental morphogenesis. However, the molecular regulation of EMT during placental development and trophoblast differentiation still remained elusive. In this report, we sought to identify the molecular signature that regulates EMT during placental development and TS cell differentiation in mice. On E7.5 onwards the TS cells, located in the ectoplacental cone (EPC), rapidly divide and differentiate leading to formation of placenta proper. Using a real time PCR based array of functional EMT transcriptome with RNA from mouse implantation sites (IS) on E7.5 and E9.5, it was observed that there was an overall reduction of EMT gene expression in the IS as gestation progressed from E7.5 to E9.5 albeit the levels of EMT gene expression were substantial on both days. Further validation of array results using real time PCR and western blot analysis showed significant decrease in EMT-associated genes that included (a) transcription factors (Snai2, Zeb1, Stat3 and Foxc2), (b) extracellular matrix and cell adhesion related genes (Bmp1, Itga5, Vcan and Col3A1), (c) migration and motility- associated genes (Vim, Msn and FN1) and (d) differentiation and development related genes (Wnt5b, Jag1 and Cleaved Notch-1) on E9.5. To understand whether EMT is an ongoing process during placentation, the EMT-associated signatures genes, prevalent on E 7.5 and 9.5, were analysed on E12.5, E14.5 and E17.5 of mouse placenta. Interestingly, expression of these EMT-signature proteins were significantly higher at E12.5 though substantial expressions was observed in placenta with progression of gestation from mid- to late. To evaluate whether TS cells have the potential to undergo EMT ex vivo, TS cells were subjected to EMT induction, which was confirmed using morphological analysis and marker gene expression. Induction of EMT in TS cells showed similar gene expression profile of placental EMT. These results have broad biological implications, as inadequate mesenchymal transition leading to improper trophoblast-vasculogenic mimicry leads to placental pathophysiology and pregnancy failure.
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Affiliation(s)
- Shipra Kanti Jena
- Division of Cell Biology and Physiology, CSIR-Indian Institute of Chemical Biology, 4, Raja S.C. Mullick Road, Jadavpur, Calcutta, West Bengal, 700032, India
- Academy of Scientific and Innovative Research (AcSIR), Sector 19, Kamla Nehru Nagar, Ghaziabad, UP, 201002, India
| | - Shreya Das
- Division of Cell Biology and Physiology, CSIR-Indian Institute of Chemical Biology, 4, Raja S.C. Mullick Road, Jadavpur, Calcutta, West Bengal, 700032, India
| | - Shreeta Chakraborty
- Division of Cell Biology and Physiology, CSIR-Indian Institute of Chemical Biology, 4, Raja S.C. Mullick Road, Jadavpur, Calcutta, West Bengal, 700032, India
| | - Rupasri Ain
- Division of Cell Biology and Physiology, CSIR-Indian Institute of Chemical Biology, 4, Raja S.C. Mullick Road, Jadavpur, Calcutta, West Bengal, 700032, India.
- Academy of Scientific and Innovative Research (AcSIR), Sector 19, Kamla Nehru Nagar, Ghaziabad, UP, 201002, India.
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7
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Eraso P, Mazón MJ, Jiménez V, Pizarro-García P, Cuevas EP, Majuelos-Melguizo J, Morillo-Bernal J, Cano A, Portillo F. New Functions of Intracellular LOXL2: Modulation of RNA-Binding Proteins. Molecules 2023; 28:molecules28114433. [PMID: 37298909 DOI: 10.3390/molecules28114433] [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: 03/28/2023] [Revised: 05/25/2023] [Accepted: 05/26/2023] [Indexed: 06/12/2023] Open
Abstract
Lysyl oxidase-like 2 (LOXL2) was initially described as an extracellular enzyme involved in extracellular matrix remodeling. Nevertheless, numerous recent reports have implicated intracellular LOXL2 in a wide variety of processes that impact on gene transcription, development, differentiation, proliferation, migration, cell adhesion, and angiogenesis, suggesting multiple different functions for this protein. In addition, increasing knowledge about LOXL2 points to a role in several types of human cancer. Moreover, LOXL2 is able to induce the epithelial-to-mesenchymal transition (EMT) process-the first step in the metastatic cascade. To uncover the underlying mechanisms of the great variety of functions of intracellular LOXL2, we carried out an analysis of LOXL2's nuclear interactome. This study reveals the interaction of LOXL2 with numerous RNA-binding proteins (RBPs) involved in several aspects of RNA metabolism. Gene expression profile analysis of cells silenced for LOXL2, combined with in silico identification of RBPs' targets, points to six RBPs as candidates to be substrates of LOXL2's action, and that deserve a more mechanistic analysis in the future. The results presented here allow us to hypothesize novel LOXL2 functions that might help to comprehend its multifaceted role in the tumorigenic process.
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Affiliation(s)
- Pilar Eraso
- Departamento de Bioquímica UAM, Instituto de Investigaciones Biomédicas Alberto Sols, CSIC-UAM, 28029 Madrid, Spain
| | - María J Mazón
- Departamento de Bioquímica UAM, Instituto de Investigaciones Biomédicas Alberto Sols, CSIC-UAM, 28029 Madrid, Spain
| | - Victoria Jiménez
- Departamento de Bioquímica UAM, Instituto de Investigaciones Biomédicas Alberto Sols, CSIC-UAM, 28029 Madrid, Spain
| | - Patricia Pizarro-García
- Departamento de Bioquímica UAM, Instituto de Investigaciones Biomédicas Alberto Sols, CSIC-UAM, 28029 Madrid, Spain
| | - Eva P Cuevas
- Departamento de Bioquímica UAM, Instituto de Investigaciones Biomédicas Alberto Sols, CSIC-UAM, 28029 Madrid, Spain
| | - Jara Majuelos-Melguizo
- Departamento de Bioquímica UAM, Instituto de Investigaciones Biomédicas Alberto Sols, CSIC-UAM, 28029 Madrid, Spain
| | - Jesús Morillo-Bernal
- Departamento de Bioquímica UAM, Instituto de Investigaciones Biomédicas Alberto Sols, CSIC-UAM, 28029 Madrid, Spain
| | - Amparo Cano
- Departamento de Bioquímica UAM, Instituto de Investigaciones Biomédicas Alberto Sols, CSIC-UAM, 28029 Madrid, Spain
- Instituto de Investigación Sanitaria del Hospital Universitario La Paz-IdiPAZ, 28029 Madrid, Spain
- Centro de Investigación Biomédica en Red, Área de Cáncer (CIBERONC), Instituto de Salud Carlos III, 28029 Madrid, Spain
| | - Francisco Portillo
- Departamento de Bioquímica UAM, Instituto de Investigaciones Biomédicas Alberto Sols, CSIC-UAM, 28029 Madrid, Spain
- Instituto de Investigación Sanitaria del Hospital Universitario La Paz-IdiPAZ, 28029 Madrid, Spain
- Centro de Investigación Biomédica en Red, Área de Cáncer (CIBERONC), Instituto de Salud Carlos III, 28029 Madrid, Spain
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8
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Casalino L, Talotta F, Matino I, Verde P. FRA-1 as a Regulator of EMT and Metastasis in Breast Cancer. Int J Mol Sci 2023; 24:ijms24098307. [PMID: 37176013 PMCID: PMC10179602 DOI: 10.3390/ijms24098307] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2023] [Revised: 04/21/2023] [Accepted: 05/01/2023] [Indexed: 05/15/2023] Open
Abstract
Among FOS-related components of the dimeric AP-1 transcription factor, the oncoprotein FRA-1 (encoded by FOSL1) is a key regulator of invasion and metastasis. The well-established FRA-1 pro-invasive activity in breast cancer, in which FOSL1 is overexpressed in the TNBC (Triple Negative Breast Cancer)/basal subtypes, correlates with the FRA-1-dependent transcriptional regulation of EMT (Epithelial-to-Mesenchymal Transition). After summarizing the major findings on FRA-1 in breast cancer invasiveness, we discuss the FRA-1 mechanistic links with EMT and cancer cell stemness, mediated by transcriptional and posttranscriptional interactions between FOSL1/FRA-1 and EMT-regulating transcription factors, miRNAs, RNA binding proteins and cytokines, along with other target genes involved in EMT. In addition to the FRA-1/AP-1 effects on the architecture of target promoters, we discuss the diagnostic and prognostic significance of the EMT-related FRA-1 transcriptome, along with therapeutic implications. Finally, we consider several novel perspectives regarding the less explored roles of FRA-1 in the tumor microenvironment and in control of the recently characterized hybrid EMT correlated with cancer cell plasticity, stemness, and metastatic potential. We will also examine the application of emerging technologies, such as single-cell analyses, along with animal models of TNBC and tumor-derived CTCs and PDXs (Circulating Tumor Cells and Patient-Derived Xenografts) for studying the FRA-1-mediated mechanisms in in vivo systems of EMT and metastasis.
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Affiliation(s)
- Laura Casalino
- Institute of Genetics and Biophysics "A. Buzzati Traverso", Consiglio Nazionale delle Ricerche (CNR), Via Pietro Castellino, 111, 80131 Naples, Italy
| | - Francesco Talotta
- Institute of Genetics and Biophysics "A. Buzzati Traverso", Consiglio Nazionale delle Ricerche (CNR), Via Pietro Castellino, 111, 80131 Naples, Italy
| | - Ilenia Matino
- Institute of Genetics and Biophysics "A. Buzzati Traverso", Consiglio Nazionale delle Ricerche (CNR), Via Pietro Castellino, 111, 80131 Naples, Italy
| | - Pasquale Verde
- Institute of Genetics and Biophysics "A. Buzzati Traverso", Consiglio Nazionale delle Ricerche (CNR), Via Pietro Castellino, 111, 80131 Naples, Italy
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9
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Dhamdhere MR, Gowda CP, Singh V, Liu Z, Carruthers N, Grant CN, Sharma A, Dovat S, Sundstrom JM, Wang HG, Spiegelman VS. IGF2BP1 regulates the cargo of extracellular vesicles and promotes neuroblastoma metastasis. Oncogene 2023; 42:1558-1571. [PMID: 36973517 PMCID: PMC10547097 DOI: 10.1038/s41388-023-02671-0] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2022] [Revised: 03/09/2023] [Accepted: 03/15/2023] [Indexed: 03/29/2023]
Abstract
Neuroblastoma is a highly metastatic cancer, and thus is one of the leading causes of cancer-related mortalities in pediatric patients. More than 50% of NB cases exhibit 17q21-ter partial chromosomal gain, which is independently associated with poor survival, suggesting the clinical importance of genes at this locus in NB. IGF2BP1 is one such proto-oncogene located at 17q locus, and was found to be upregulated in patients with metastatic NBs. Here, utilizing multiple immunocompetent mouse models, along with our newly developed highly metastatic NB cell line, we demonstrate the role of IGF2BP1 in promoting NB metastasis. Importantly, we show the significance of small extracellular vesicles (EVs) in NB progression, and determine the pro-metastatic function of IGF2BP1 by regulating the NB-EV-protein cargo. Through unbiased proteomic analysis of EVs, we discovered two novel targets (SEMA3A and SHMT2) of IGF2BP1, and reveal the mechanism of IGF2BP1 in NB metastasis. We demonstrate that IGF2BP1 directly binds and governs the expression of SEMA3A/SHMT2 in NB cells, thereby modulating their protein levels in NB-EVs. IGF2BP1-affected levels of SEMA3A and SHMT2 in the EVs, regulate the formation of pro-metastatic microenvironment at potential metastatic organs. Finally, higher levels of SEMA3A/SHMT2 proteins in the EVs derived from NB-PDX models indicate the clinical significance of the two proteins and IGF2BP1-SEMA3A/SHMT2 axis in NB metastasis.
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Affiliation(s)
- Mayura R Dhamdhere
- Division of Pediatric Hematology and Oncology, Department of Pediatrics, The Pennsylvania State University College of Medicine, Hershey, PA, USA
| | - Chethana P Gowda
- Division of Pediatric Hematology and Oncology, Department of Pediatrics, The Pennsylvania State University College of Medicine, Hershey, PA, USA
| | - Vikash Singh
- Division of Pediatric Hematology and Oncology, Department of Pediatrics, The Pennsylvania State University College of Medicine, Hershey, PA, USA
| | - Zhenqiu Liu
- Department of Public Health Sciences, The Pennsylvania State University College of Medicine, Penn State Cancer Institute, Hershey, PA, USA
| | - Nicholas Carruthers
- Bioinformatics Core, University of Michigan Medical School, Ann Arbor, MI, USA
| | - Christa N Grant
- Division of Pediatric Surgery, Department of Surgery, The Pennsylvania State University College of Medicine, Hershey, PA, USA
| | - Arati Sharma
- Division of Pediatric Hematology and Oncology, Department of Pediatrics, The Pennsylvania State University College of Medicine, Hershey, PA, USA
| | - Sinisa Dovat
- Division of Pediatric Hematology and Oncology, Department of Pediatrics, The Pennsylvania State University College of Medicine, Hershey, PA, USA
| | - Jeffrey M Sundstrom
- Department of Ophthalmology, The Pennsylvania State University College of Medicine, Hershey, PA, USA
| | - Hong-Gang Wang
- Division of Pediatric Hematology and Oncology, Department of Pediatrics, The Pennsylvania State University College of Medicine, Hershey, PA, USA
| | - Vladimir S Spiegelman
- Division of Pediatric Hematology and Oncology, Department of Pediatrics, The Pennsylvania State University College of Medicine, Hershey, PA, USA.
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10
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Zhang X, Luo Y, Cen Y, Qiu X, Li J, Jie M, Yang S, Qin S. MACC1 promotes pancreatic cancer metastasis by interacting with the EMT regulator SNAI1. Cell Death Dis 2022; 13:923. [PMID: 36333284 PMCID: PMC9636131 DOI: 10.1038/s41419-022-05285-8] [Citation(s) in RCA: 16] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2022] [Revised: 09/16/2022] [Accepted: 09/20/2022] [Indexed: 11/06/2022]
Abstract
Metastasis is the dominant cause of cancer-related mortality. Metastasis-associated with colon cancer protein 1 (MACC1) has been proven to play a critical role in cancer metastasis. However, the prometastatic role of MACC1 in regulating the pancreatic cancer (PC) metastatic phenotype remains elusive. Here, we report that MACC1 is highly expressed in The Cancer Genome Atlas (TCGA) and tissue microarray (TMA) and identified as a good indicator for poor prognosis. Overexpression or knockdown of MACC1 in PC cells correspondingly promoted or inhibited pancreatic cancer cell migration and invasion in a MET proto-oncogene receptor tyrosine kinase (MET)-independent manner. Notably, knockdown of MACC1 in PC cells markedly decreased the liver metastatic lesions in a liver metastasis model. Mechanistically, MACC1 binds to the epithelial-mesenchymal transition (EMT) regulator snail family transcriptional repressor 1 (SNAI1) to drive EMT via upregulating the transcriptional activity of SNAI1, leading to the transactivation of fibronectin 1 (FN1) and the trans-repression of cadherin 1 (CDH1). Collectively, our results unveil a new mechanism by which MACC1 drives pancreatic cancer cell metastasis and suggest that the MACC1-SNAI1 complex-mediated mesenchymal transition may be a therapeutic target in pancreatic cancer.
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Affiliation(s)
- Xianglian Zhang
- grid.412594.f0000 0004 1757 2961Department of Gastroenterology, The First Affiliated Hospital of Guangxi Medical University, Nanning, 530021 China
| | - Ya Luo
- grid.417298.10000 0004 1762 4928Department of Gastroenterology, Xinqiao Hospital, Third Military Medical University, Chongqing, 400037 China
| | - Yu Cen
- grid.412594.f0000 0004 1757 2961Department of Gastroenterology, The First Affiliated Hospital of Guangxi Medical University, Nanning, 530021 China
| | - Xin Qiu
- grid.412594.f0000 0004 1757 2961Department of Gastroenterology, The First Affiliated Hospital of Guangxi Medical University, Nanning, 530021 China
| | - Jing Li
- grid.417298.10000 0004 1762 4928Department of Gastroenterology, Xinqiao Hospital, Third Military Medical University, Chongqing, 400037 China
| | - Mengmeng Jie
- grid.417298.10000 0004 1762 4928Department of Gastroenterology, Xinqiao Hospital, Third Military Medical University, Chongqing, 400037 China
| | - Shiming Yang
- grid.417298.10000 0004 1762 4928Department of Gastroenterology, Xinqiao Hospital, Third Military Medical University, Chongqing, 400037 China
| | - Shanyu Qin
- grid.412594.f0000 0004 1757 2961Department of Gastroenterology, The First Affiliated Hospital of Guangxi Medical University, Nanning, 530021 China
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11
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RNA-binding proteins: Underestimated contributors in tumorigenesis. Semin Cancer Biol 2022; 86:431-444. [PMID: 35124196 DOI: 10.1016/j.semcancer.2022.01.010] [Citation(s) in RCA: 15] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2021] [Revised: 01/17/2022] [Accepted: 01/28/2022] [Indexed: 02/07/2023]
Abstract
mRNA export, translation, splicing, cleavage or capping determine mRNA stability, which represents one of the primary aspects regulating gene expression and function. RNA-binding proteins (RBPs) bind to their target mRNAs to regulate multiple cell functions by increasing or reducing their stability. In recent decades, studies of the role of RBPs in tumorigenesis have revealed an increasing number of proteins impacting the prognosis, diagnosis and cancer treatment. Several RBPs have been identified based on their interactions with oncogenes or tumor suppressor genes in human cancers, which are involved in apoptosis, the epithelial-mesenchymal transition (EMT), DNA repair, autophagy, cell proliferation, immune response, metabolism, and the regulation of noncoding RNAs. In this review, we propose a model showing how RBP mutations influence tumorigenesis, and we update the current knowledge regarding the molecular mechanism by which RBPs regulate cancer. Special attention is being devoted to RBPs that represent prognostic and diagnostic factors in cancer patients.
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12
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Suphakhong K, Terashima M, Wanna-udom S, Takatsuka R, Ishimura A, Takino T, Suzuki T. m6A RNA methylation regulates the transcription factors JUN and JUNB in TGF-β-induced epithelial-mesenchymal transition of lung cancer cells. J Biol Chem 2022; 298:102554. [PMID: 36183833 PMCID: PMC9619186 DOI: 10.1016/j.jbc.2022.102554] [Citation(s) in RCA: 15] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2022] [Revised: 09/20/2022] [Accepted: 09/23/2022] [Indexed: 11/30/2022] Open
Abstract
N6-methyladenosine (m6A) is the most common internal chemical modification of mRNAs involved in many pathological processes including various cancers. In this study, we investigated the m6A-dependent regulation of JUN and JUNB transcription factors (TFs) during transforming growth factor-beta–induced epithelial–mesenchymal transition (EMT) of A549 and LC2/ad lung cancer cell lines, as the function and regulation of these TFs within this process remains to be clarified. We found that JUN and JUNB played an important and nonredundant role in the EMT-inducing gene expression program by regulating different mesenchymal genes and that their expressions were controlled by methyltransferase-like 3 (METTL3) m6A methyltransferase. METTL3–mediated regulation of JUN expression is associated with the translation process of JUN protein but not with the stability of JUN protein or mRNA, which is in contrast with the result of m6A-mediated regulation of JUNB mRNA stability. We identified the specific m6A motifs responsible for the regulation of JUN and JUNB in EMT within 3′UTR of JUN and JUNB. Furthermore, we discovered that different m6A reader proteins interacted with JUN and JUNB mRNA and controlled m6A-dependent expression of JUN protein and JUNB mRNA. These results demonstrate that the different modes of m6A-mediated regulation of JUN and JUNB TFs provide critical input in the gene regulatory network during transforming growth factor-beta–induced EMT of lung cancer cells.
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13
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IGF2BP1 Promotes Proliferation of Neuroendocrine Neoplasms by Post-Transcriptional Enhancement of EZH2. Cancers (Basel) 2022; 14:cancers14092121. [PMID: 35565249 PMCID: PMC9131133 DOI: 10.3390/cancers14092121] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2022] [Revised: 04/21/2022] [Accepted: 04/22/2022] [Indexed: 12/20/2022] Open
Abstract
Simple Summary Neuroendocrine neoplasms (NEN) are very heterogeneous malignancies arising at different sites of the body that show an increasing incidence in recent decades. Here, we show that IGF2 mRNA binding protein 1 (IGF2BP1) is highly expressed in NEN cell lines, leading to enhanced cell proliferation. This oncogenic function relies on post-transcriptional stimulation of EZH2 expression by IGF2BP1, resulting in epigenetic silencing of cell cycle inhibitors via tri-methylation of histone H3 at lysine 27 (H3K27me3). Combinatorial pharmacological targeting of IGF2BP1, EZH2, and the EZH2-activator Myc leads to synergistic antiproliferative and proapoptotic effects in NEN cells, representing a novel therapeutic strategy in neuroendocrine malignancies. Abstract Neuroendocrine neoplasms (NENs) represent a heterogenous class of highly vascularized neoplasms that are increasing in prevalence and are predominantly diagnosed at a metastatic state. The molecular mechanisms leading to tumor initiation, metastasis, and chemoresistance are still under investigation. Hence, identification of novel therapeutic targets is of great interest. Here, we demonstrate that the RNA-binding Protein IGF2BP1 is a post-transcriptional regulator of components of the Polycomb repressive complex 2 (PRC2), an epigenic modifier affecting transcriptional regulation and proliferation: Comprehensive in silico analyses along with in vitro experiments showed that IGF2BP1 promotes neuroendocrine tumor cell proliferation by stabilizing the mRNA of Enhancer of Zeste 2 (EZH2), the catalytic subunit of PRC2, which represses gene expression by tri-methylation of histone H3 at lysine 27 (H3K27me3). The IGF2BP1-driven stabilization and protection of EZH2 mRNA is m6A-dependent and enhances EZH2 protein levels which stimulates cell cycle progression by silencing cell cycle arrest genes through enhanced H3K27 tri-methylation. Therapeutic inhibition of IGF2BP1 destabilizes EZH2 mRNA and results in a reduced cell proliferation, paralleled by an increase in G1 and sub-G1 phases. Combined targeting of IGF2BP1, EZH2, and Myc, a transcriptional activator of EZH2 and well-known target of IGF2BP1 cooperatively induces tumor cell apoptosis. Our data identify IGF2BP1 as an important driver of tumor progression in NEN, and indicate that disruption of the IGF2BP1-Myc-EZH2 axis represents a promising approach for targeted therapy of neuroendocrine neoplasms.
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14
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Choudhury J, Pandey D, Chaturvedi PK, Gupta S. Epigenetic regulation of epithelial to mesenchymal transition: a trophoblast perspective. Mol Hum Reprod 2022; 28:6572349. [PMID: 35451485 DOI: 10.1093/molehr/gaac013] [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: 02/11/2022] [Revised: 03/31/2022] [Indexed: 11/12/2022] Open
Abstract
Epigenetic changes alter expression of genes at both pre- and post-transcriptional levels without changing their DNA sequence. Accumulating evidence suggests that such changes can modify cellular behaviour and characteristics required during development and in response to various extracellular stimuli. Trophoblast cells develop from the outermost trophectoderm layer of the blastocyst and undergo many phenotypic changes as the placenta develops. One such phenotypic change is differentiation of the epithelial natured cytotrophoblasts into the mesenchymal natured extravillous trophoblasts. The extravillous trophoblasts are primarily responsible for invading into the maternal decidua and thus establishing connection with the maternal spiral arteries. Any dysregulation of this process can have adverse effects on the pregnancy outcome. Hence, tight regulation of this epithelial-mesenchymal transition is critical for successful pregnancy. This review summarizes the recent research on the epigenetic regulation of the epithelial-mesenchymal transition occurring in the trophoblast cells during placental development. The functional significance of chemical modifications of DNA and histone, which regulate transcription, as well as non-coding RNAs, which control gene expression post-transcriptionally, is discussed in relation to trophoblast biology.
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Affiliation(s)
- Jaganmoy Choudhury
- Department of Reproductive Biology, All India Institute of Medical Sciences, New Delhi-, 110029, India
| | - Deepak Pandey
- Department of Reproductive Biology, All India Institute of Medical Sciences, New Delhi-, 110029, India
| | - Pradeep Kumar Chaturvedi
- Department of Reproductive Biology, All India Institute of Medical Sciences, New Delhi-, 110029, India
| | - Surabhi Gupta
- Department of Reproductive Biology, All India Institute of Medical Sciences, New Delhi-, 110029, India
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15
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Xiao KW, Yang ZQ, Yan X, Liu ZB, Yang M, Guo LY, Cai L. Molecular Characteristics of m6A Regulators and Tumor Microenvironment Infiltration in Soft Tissue Sarcoma: A Gene-Based Study. Front Bioeng Biotechnol 2022; 10:846812. [PMID: 35519620 PMCID: PMC9062003 DOI: 10.3389/fbioe.2022.846812] [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: 12/31/2021] [Accepted: 03/22/2022] [Indexed: 11/13/2022] Open
Abstract
Background: N6-methyladenosine (m6A) methylation played a key role in tumor growth. However, the relationship between m6A and soft tissue sarcoma (STS) was still unclear. Methods: The characterization and patterns of m6A modification in STS (TCGA-SARC and GSE17674) were analyzed comprehensively through bioinformatics and real-time polymerase chain reaction (RT-PCR). The effects of different m6A modification patterns on prognosis and immune infiltration of STS were further explored. Differentially expressed gene (DEG) analysis was performed. Moreover, an m6Ascore was constructed by principal component analysis (PCA). In addition, two immunotherapy datasets (IMvigor210 and GSE78220) and a sarcoma dataset (GSE17618) were used to evaluate the m6Ascore. Results: Huge differences were found in somatic mutation, CNV, and expression of 25 m6A regulators in STS. Two modification patterns (A and B) in STS were further identified and the m6A cluster A showed a better clinical outcome with a lower immune/stromal score compared with the m6A cluster B (p < 0.050).In addition to , most STS samples from m6A cluster A showed a high m6Ascore, which was related to mismatch repair and a better prognosis of STS (p < 0.001). In contrast, the m6A cluster B, characterized by a low m6Ascore, was related to the MYC signaling pathway, which led to a poor prognosis of STS. A high m6Ascore also contributed to a better outcome of PD-1/PD-L1 blockade immunotherapy. Conclusion: The modification patterns of 25 m6A regulators in the STS microenvironment were explored comprehensively. The novel m6Ascore effectively predicted the characteristics of the tumor microenvironment (TME) and outcome in STS and provided novel insights for future immunotherapy.
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Affiliation(s)
- Kang-Wen Xiao
- Department of Orthopedics, Zhongnan Hospital of Wuhan University, Wuhan, China
| | - Zhi-Qiang Yang
- Department of Orthopedics, Zhongnan Hospital of Wuhan University, Wuhan, China
| | - Xin Yan
- Department of Urology, Zhongnan Hospital of Wuhan University, Wuhan, China
| | - Zhi-Bo Liu
- Department of Orthopedics, Zhongnan Hospital of Wuhan University, Wuhan, China
| | - Min Yang
- Department of Orthopedics, Zhongnan Hospital of Wuhan University, Wuhan, China
| | - Liang-Yu Guo
- Department of Orthopedics, Zhongnan Hospital of Wuhan University, Wuhan, China
| | - Lin Cai
- Department of Orthopedics, Zhongnan Hospital of Wuhan University, Wuhan, China
- *Correspondence: Lin Cai,
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16
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Huang M, Dong W, Xie R, Wu J, Su Q, Li W, Yao K, Chen Y, Zhou Q, Zhang Q, Li W, Cheng L, Peng S, Chen S, Huang J, Chen X, Lin T. HSF1 facilitates the multistep process of lymphatic metastasis in bladder cancer via a novel PRMT5-WDR5-dependent transcriptional program. Cancer Commun (Lond) 2022; 42:447-470. [PMID: 35434944 PMCID: PMC9118058 DOI: 10.1002/cac2.12284] [Citation(s) in RCA: 46] [Impact Index Per Article: 23.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2021] [Revised: 03/16/2022] [Accepted: 03/20/2022] [Indexed: 01/09/2023] Open
Abstract
Background Lymphatic metastasis has been associated with poor prognosis in bladder cancer patients with limited therapeutic options. Emerging evidence shows that heat shock factor 1 (HSF1) drives diversified transcriptome to promote tumor growth and serves as a promising therapeutic target. However, the roles of HSF1 in lymphatic metastasis remain largely unknown. Herein, we aimed to illustrate the clinical roles and mechanisms of HSF1 in the lymphatic metastasis of bladder cancer and explore its therapeutic potential. Methods We screened the most relevant gene to lymphatic metastasis among overexpressed heat shock factors (HSFs) and heat shock proteins (HSPs), and analyzed its clinical relevance in three cohorts. Functional in vitro and in vivo assays were performed in HSF1‐silenced and ‐regained models. We also used Co‐immunoprecipitation to identify the binding proteins of HSF1 and chromatin immunoprecipitation and dual‐luciferase reporter assays to investigate the transcriptional program directed by HSF1. The pharmacological inhibitor of HSF1, KRIBB11, was evaluated in popliteal lymph node metastasis models and patient‐derived xenograft models of bladder cancer. Results HSF1 expression was positively associated with lymphatic metastasis status, tumor stage, advanced grade, and poor prognosis of bladder cancer. Importantly, HSF1 enhanced the epithelial‐mesenchymal transition (EMT) of cancer cells in primary tumor to initiate metastasis, proliferation of cancer cells in lymph nodes, and macrophages infiltration to facilitate multistep lymphatic metastasis. Mechanistically, HSF1 interacted with protein arginine methyltransferase 5 (PRMT5) and jointly induced the monomethylation of histone H3 at arginine 2 (H3R2me1) and symmetric dimethylation of histone H3 at arginine 2 (H3R2me2s). This recruited the WD repeat domain 5 (WDR5)/mixed‐lineage leukemia (MLL) complex to increase the trimethylation of histone H3 at lysine 4 (H3K4me3); resulting in upregulation of lymphoid enhancer‐binding factor 1 (LEF1), matrix metallopeptidase 9 (MMP9), C‐C motif chemokine ligand 20 (CCL20), and E2F transcription factor 2 (E2F2). Application of KRIBB11 significantly inhibited the lymphatic metastasis of bladder cancer with no significant toxicity. Conclusion Our findings reveal a novel transcriptional program directed by the HSF1‐PRMT5‐WDR5 axis during the multistep process of lymphatic metastasis in bladder cancer. Targeting HSF1 could be a multipotent and promising therapeutic strategy for bladder cancer patients with lymphatic metastasis.
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Affiliation(s)
- Ming Huang
- Department of Urology, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, Guangdong, 510120, P. R. China.,Guangdong Provincial Key Laboratory of Malignant Tumor Epigenetics and Gene Regulation, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, Guangdong, 510120, P. R. China
| | - Wen Dong
- Department of Urology, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, Guangdong, 510120, P. R. China.,Guangdong Provincial Clinical Research Center for Urological Diseases, Guangzhou, Guangdong, 510120, P. R. China
| | - Ruihui Xie
- Department of Urology, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, Guangdong, 510120, P. R. China.,Guangdong Provincial Key Laboratory of Malignant Tumor Epigenetics and Gene Regulation, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, Guangdong, 510120, P. R. China
| | - Jilin Wu
- Department of Urology, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, Guangdong, 510120, P. R. China.,Guangdong Provincial Key Laboratory of Malignant Tumor Epigenetics and Gene Regulation, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, Guangdong, 510120, P. R. China
| | - Qiao Su
- Animal Experiment Center, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, Guangdong, 510080, P. R. China
| | - Wuguo Li
- Animal Experiment Center, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, Guangdong, 510080, P. R. China
| | - Kai Yao
- Department of Urology, Sun Yat-sen University Cancer Center, Guangzhou, Guangdong, 510060, P. R. China
| | - Yuelong Chen
- Department of Urology, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, Guangdong, 510120, P. R. China.,Guangdong Provincial Key Laboratory of Malignant Tumor Epigenetics and Gene Regulation, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, Guangdong, 510120, P. R. China
| | - Qianghua Zhou
- Department of Urology, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, Guangdong, 510120, P. R. China.,Guangdong Provincial Key Laboratory of Malignant Tumor Epigenetics and Gene Regulation, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, Guangdong, 510120, P. R. China
| | - Qiang Zhang
- Department of Urology, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, Guangdong, 510120, P. R. China.,Guangdong Provincial Key Laboratory of Malignant Tumor Epigenetics and Gene Regulation, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, Guangdong, 510120, P. R. China
| | - Wenwen Li
- Animal Experiment Center, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, Guangdong, 510080, P. R. China
| | - Liang Cheng
- Department of Urology, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, Guangdong, 510120, P. R. China.,Guangdong Provincial Key Laboratory of Malignant Tumor Epigenetics and Gene Regulation, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, Guangdong, 510120, P. R. China
| | - Shengmeng Peng
- Department of Urology, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, Guangdong, 510120, P. R. China.,Guangdong Provincial Key Laboratory of Malignant Tumor Epigenetics and Gene Regulation, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, Guangdong, 510120, P. R. China
| | - Siting Chen
- Department of Urology, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, Guangdong, 510120, P. R. China.,Guangdong Provincial Key Laboratory of Malignant Tumor Epigenetics and Gene Regulation, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, Guangdong, 510120, P. R. China
| | - Jian Huang
- Department of Urology, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, Guangdong, 510120, P. R. China.,Guangdong Provincial Key Laboratory of Malignant Tumor Epigenetics and Gene Regulation, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, Guangdong, 510120, P. R. China.,Guangdong Provincial Clinical Research Center for Urological Diseases, Guangzhou, Guangdong, 510120, P. R. China
| | - Xu Chen
- Department of Urology, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, Guangdong, 510120, P. R. China.,Guangdong Provincial Key Laboratory of Malignant Tumor Epigenetics and Gene Regulation, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, Guangdong, 510120, P. R. China.,Guangdong Provincial Clinical Research Center for Urological Diseases, Guangzhou, Guangdong, 510120, P. R. China
| | - Tianxin Lin
- Department of Urology, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, Guangdong, 510120, P. R. China.,Guangdong Provincial Key Laboratory of Malignant Tumor Epigenetics and Gene Regulation, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, Guangdong, 510120, P. R. China.,Guangdong Provincial Clinical Research Center for Urological Diseases, Guangzhou, Guangdong, 510120, P. R. China
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17
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Zhao X, Li X, Li X. Multiple roles of m6A methylation in epithelial–mesenchymal transition. Mol Biol Rep 2022; 49:8895-8906. [DOI: 10.1007/s11033-022-07368-3] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2021] [Accepted: 03/11/2022] [Indexed: 01/17/2023]
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18
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Liang X, Yan Z, Wang P, Liu Y, Ao X, Liu Z, Wang D, Liu X, Zhu M, Gao S, Xie D, Zhou P, Gu Y. Irradiation Activates MZF1 to Inhibit miR-541-5p Expression and Promote Epithelial-Mesenchymal Transition (EMT) in Radiation-Induced Pulmonary Fibrosis (RIPF) by Upregulating Slug. Int J Mol Sci 2021; 22:11309. [PMID: 34768749 PMCID: PMC8582843 DOI: 10.3390/ijms222111309] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2021] [Revised: 10/15/2021] [Accepted: 10/16/2021] [Indexed: 01/01/2023] Open
Abstract
Understanding miRNAs regulatory roles in epithelial-mesenchymal transition (EMT) would help establish new avenues for further uncovering the mechanisms underlying radiation-induced pulmonary fibrosis (RIPF) and identifying preventative and therapeutic targets. Here, we demonstrated that miR-541-5p repression by Myeloid Zinc Finger 1 (MZF1) promotes radiation-induced EMT and RIPF. Irradiation could decrease miR-541-5p expression in vitro and in vivo and inversely correlated to RIPF development. Ectopic miR-541-5p expression suppressed radiation-induced-EMT in vitro and in vivo. Knockdown of Slug, the functional target of miR-541-5p, inhibited EMT induction by irradiation. The upregulation of transcription factor MZF1 upon irradiation inhibited the expression of endogenous miR-541-5p and its primary precursor (pri-miR-541-5p), which regulated the effect of the Slug on the EMT process. Our finding showed that ectopic miR-541-5p expression mitigated RIPF in mice by targeting Slug. Thus, irradiation activates MZF1 to downregulate miR-541-5p in alveolar epithelial cells, promoting EMT and contributing to RIPF by targeting Slug. Our observation provides further understanding of the development of RIPF and determines potential preventative and therapeutic targets.
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Affiliation(s)
- Xinxin Liang
- Hengyang Medical College, University of South China, Hengyang 421001, China; (X.L.); (X.A.)
- Beijing Key Laboratory for Radiobiology, Beijing Institute of Radiation Medicine, Beijing 100850, China; (Z.Y.); (P.W.); (Y.L.); (D.W.); (X.L.); (M.Z.); (S.G.); (D.X.)
| | - Ziyan Yan
- Beijing Key Laboratory for Radiobiology, Beijing Institute of Radiation Medicine, Beijing 100850, China; (Z.Y.); (P.W.); (Y.L.); (D.W.); (X.L.); (M.Z.); (S.G.); (D.X.)
| | - Ping Wang
- Beijing Key Laboratory for Radiobiology, Beijing Institute of Radiation Medicine, Beijing 100850, China; (Z.Y.); (P.W.); (Y.L.); (D.W.); (X.L.); (M.Z.); (S.G.); (D.X.)
| | - Yuhao Liu
- Beijing Key Laboratory for Radiobiology, Beijing Institute of Radiation Medicine, Beijing 100850, China; (Z.Y.); (P.W.); (Y.L.); (D.W.); (X.L.); (M.Z.); (S.G.); (D.X.)
| | - Xingkun Ao
- Hengyang Medical College, University of South China, Hengyang 421001, China; (X.L.); (X.A.)
| | - Zheng Liu
- School of Public Health, University of South China, Hengyang 421001, China;
| | - Duo Wang
- Beijing Key Laboratory for Radiobiology, Beijing Institute of Radiation Medicine, Beijing 100850, China; (Z.Y.); (P.W.); (Y.L.); (D.W.); (X.L.); (M.Z.); (S.G.); (D.X.)
| | - Xiaochang Liu
- Beijing Key Laboratory for Radiobiology, Beijing Institute of Radiation Medicine, Beijing 100850, China; (Z.Y.); (P.W.); (Y.L.); (D.W.); (X.L.); (M.Z.); (S.G.); (D.X.)
| | - Maoxiang Zhu
- Beijing Key Laboratory for Radiobiology, Beijing Institute of Radiation Medicine, Beijing 100850, China; (Z.Y.); (P.W.); (Y.L.); (D.W.); (X.L.); (M.Z.); (S.G.); (D.X.)
| | - Shanshan Gao
- Beijing Key Laboratory for Radiobiology, Beijing Institute of Radiation Medicine, Beijing 100850, China; (Z.Y.); (P.W.); (Y.L.); (D.W.); (X.L.); (M.Z.); (S.G.); (D.X.)
| | - Dafei Xie
- Beijing Key Laboratory for Radiobiology, Beijing Institute of Radiation Medicine, Beijing 100850, China; (Z.Y.); (P.W.); (Y.L.); (D.W.); (X.L.); (M.Z.); (S.G.); (D.X.)
| | - Pingkun Zhou
- Beijing Key Laboratory for Radiobiology, Beijing Institute of Radiation Medicine, Beijing 100850, China; (Z.Y.); (P.W.); (Y.L.); (D.W.); (X.L.); (M.Z.); (S.G.); (D.X.)
| | - Yongqing Gu
- Hengyang Medical College, University of South China, Hengyang 421001, China; (X.L.); (X.A.)
- Beijing Key Laboratory for Radiobiology, Beijing Institute of Radiation Medicine, Beijing 100850, China; (Z.Y.); (P.W.); (Y.L.); (D.W.); (X.L.); (M.Z.); (S.G.); (D.X.)
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19
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Investigation of the Epithelial to Mesenchymal Transition (EMT) Process in Equine Papillomavirus-2 (EcPV-2)-Positive Penile Squamous Cell Carcinomas. Int J Mol Sci 2021; 22:ijms221910588. [PMID: 34638929 PMCID: PMC8508821 DOI: 10.3390/ijms221910588] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2021] [Revised: 09/26/2021] [Accepted: 09/28/2021] [Indexed: 12/14/2022] Open
Abstract
Equine penile squamous cell carcinoma (epSCC) is the most frequent tumor of the external male genitalia, representing 67.5% of equine genital cancers. epSCC is associated with papilloma virus (PV) infection and has been recently proposed as a model for human PV-induced squamous cell carcinomas. It has already been suggested that epSCC might undergo epithelial-to-mesenchymal transition (EMT). This work aims to investigate in detail this process and the possible role of PV oncoproteins in epSCC. For this purpose, 18 penile SCCs were retrospectively selected and tested for both EcPV2 presence and oncoproteins (EcPV2 E6 and EcPV2 E7) expression. Moreover, immunohistochemical EMT characterization was carried out by analyzing the main epithelial markers (E-cadherin, β-catenin, and pan-cytokeratin AE3/AE1), the main mesenchymal markers (N-cadherin and vimentin), and the main EMT-related transcription factors (TWIST-1, ZEB-1). PCR analysis was positive for EcPV2 in 16 out of 18 samples. EMT was investigated in epSCC positive for EcPV2. The immunohistochemistry results suggested the presence of EMT processes in the neoplastic cells at the tumor invasive front. Moreover, the significant upregulation of RANKL, together with BCATN1, LEF1, and FOSL1 genes, might suggest a canonical Wnt pathway activation, similarly to what is reported in human penile squamous cell carcinomas
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20
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The biological function of IGF2BPs and their role in tumorigenesis. Invest New Drugs 2021; 39:1682-1693. [PMID: 34251559 DOI: 10.1007/s10637-021-01148-9] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2021] [Accepted: 06/30/2021] [Indexed: 01/09/2023]
Abstract
The insulin-like growth factor-2 mRNA-binding proteins (IGF2BPs) pertain to a highly conservative RNA-binding family that works as a post-transcriptional fine-tuner for target transcripts. Emerging evidence suggests that IGF2BPs regulate RNA processing and metabolism, including stability, translation, and localization, and are involved in various cellular functions and pathophysiologies. In this review, we summarize the roles and molecular mechanisms of IGF2BPs in cancer development and progression. We mainly discuss the functional relevance of IGF2BPs in embryo development, neurogenesis, metabolism, RNA processing, and tumorigenesis. Understanding IGF2BPs role in tumor progression will provide new insight into cancer pathophysiology.
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21
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Huang H, Gont A, Kee L, Dries R, Pfeifer K, Sharma B, Debruyne DN, Harlow M, Sengupta S, Guan J, Yeung CM, Wang W, Hallberg B, Palmer RH, Irwin MS, George RE. Extracellular domain shedding of the ALK receptor mediates neuroblastoma cell migration. Cell Rep 2021; 36:109363. [PMID: 34260934 PMCID: PMC8328392 DOI: 10.1016/j.celrep.2021.109363] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2019] [Revised: 03/19/2021] [Accepted: 06/17/2021] [Indexed: 12/24/2022] Open
Abstract
Although activating mutations of the anaplastic lymphoma kinase (ALK) membrane receptor occur in ~10% of neuroblastoma (NB) tumors, the role of the wild-type (WT) receptor, which is aberrantly expressed in most non-mutated cases, is unclear. Both WT and mutant proteins undergo extracellular domain (ECD) cleavage. Here, we map the cleavage site to Asn654-Leu655 and demonstrate that cleavage inhibition of WT ALK significantly impedes NB cell migration with subsequent prolongation of survival in mouse models. Cleavage inhibition results in the downregulation of an epithelial-to-mesenchymal transition (EMT) gene signature, with decreased nuclear localization and occupancy of β-catenin at EMT gene promoters. We further show that cleavage is mediated by matrix metalloproteinase 9, whose genetic and pharmacologic inactivation inhibits cleavage and decreases NB cell migration. Together, our results indicate a pivotal role for WT ALK ECD cleavage in NB pathogenesis, which may be harnessed for therapeutic benefit. Huang et al. show that extracellular domain (ECD) cleavage of the ALK cell surface tyrosine kinase receptor mediates neuroblastoma cell migration through induction of an EMT phenotype. ECD cleavage is caused by MMP-9 whose inhibition leads to decreased cell migration.
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Affiliation(s)
- Hao Huang
- Department of Pediatric Hematology/Oncology, Dana-Farber Cancer Institute, Boston, MA 02215, USA; Department of Pediatrics, Harvard Medical School, Boston, MA 02115, USA
| | - Alexander Gont
- Department of Pediatrics and Cell Biology Program, The Hospital for Sick Children, University of Toronto, Toronto, ON, Canada
| | - Lynn Kee
- Department of Pediatrics and Cell Biology Program, The Hospital for Sick Children, University of Toronto, Toronto, ON, Canada
| | - Ruben Dries
- Department of Pediatric Hematology/Oncology, Dana-Farber Cancer Institute, Boston, MA 02215, USA; Department of Pediatrics, Harvard Medical School, Boston, MA 02115, USA
| | - Kathrin Pfeifer
- Department of Medical Biochemistry and Cell Biology, Institute of Biomedicine, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
| | - Bandana Sharma
- Department of Pediatric Hematology/Oncology, Dana-Farber Cancer Institute, Boston, MA 02215, USA; Department of Pediatrics, Harvard Medical School, Boston, MA 02115, USA
| | - David N Debruyne
- Department of Pediatric Hematology/Oncology, Dana-Farber Cancer Institute, Boston, MA 02215, USA; Department of Pediatrics, Harvard Medical School, Boston, MA 02115, USA
| | - Matthew Harlow
- Department of Pediatric Hematology/Oncology, Dana-Farber Cancer Institute, Boston, MA 02215, USA; Department of Pediatrics, Harvard Medical School, Boston, MA 02115, USA
| | - Satyaki Sengupta
- Department of Pediatric Hematology/Oncology, Dana-Farber Cancer Institute, Boston, MA 02215, USA; Department of Pediatrics, Harvard Medical School, Boston, MA 02115, USA
| | - Jikui Guan
- Department of Medical Biochemistry and Cell Biology, Institute of Biomedicine, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
| | - Caleb M Yeung
- Department of Pediatric Hematology/Oncology, Dana-Farber Cancer Institute, Boston, MA 02215, USA; Department of Pediatrics, Harvard Medical School, Boston, MA 02115, USA
| | - Wenchao Wang
- Department of Pediatric Hematology/Oncology, Dana-Farber Cancer Institute, Boston, MA 02215, USA; Department of Pediatrics, Harvard Medical School, Boston, MA 02115, USA
| | - Bengt Hallberg
- Department of Medical Biochemistry and Cell Biology, Institute of Biomedicine, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
| | - Ruth H Palmer
- Department of Medical Biochemistry and Cell Biology, Institute of Biomedicine, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
| | - Meredith S Irwin
- Department of Pediatrics and Cell Biology Program, The Hospital for Sick Children, University of Toronto, Toronto, ON, Canada.
| | - Rani E George
- Department of Pediatric Hematology/Oncology, Dana-Farber Cancer Institute, Boston, MA 02215, USA; Department of Pediatrics, Harvard Medical School, Boston, MA 02115, USA.
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22
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Glaß M, Misiak D, Bley N, Müller S, Hagemann S, Busch B, Rausch A, Hüttelmaier S. IGF2BP1, a Conserved Regulator of RNA Turnover in Cancer. Front Mol Biosci 2021; 8:632219. [PMID: 33829040 PMCID: PMC8019740 DOI: 10.3389/fmolb.2021.632219] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2020] [Accepted: 02/02/2021] [Indexed: 12/13/2022] Open
Abstract
The oncofetal IGF2 mRNA-binding protein 1 (IGF2BP1) promotes tumor progression in a variety of solid tumors and its expression is associated with adverse prognosis. The main role proposed for IGF2BP1 in cancer cells is the stabilization of mRNAs encoding pro-oncogenic factors. Several IGF2BP1-RNA association studies, however, revealed a plethora of putative IGF2BP1-RNA targets. Thus, at present the main conserved target RNAs and pathways controlled by IGF2BP1 in cancer remain elusive. In this study, we present a set of genes and cancer hallmark pathways showing a conserved pattern of deregulation in dependence of IGF2BP1 expression in cancer cell lines. By the integrative analysis of these findings with publicly available cancer transcriptome and IGF2BP1-RNA association data, we compiled a set of prime candidate target mRNAs. These analyses confirm a pivotal role of IGF2BP1 in controlling cancer cell cycle progression and reveal novel cancer hallmark pathways influenced by IGF2BP1. For three novel target mRNAs identified by these studies, namely AURKA, HDLBP and YWHAZ, we confirm IGF2BP1 mRNA stabilization. In sum our findings confirm and expand previous findings on the pivotal role of IGF2BP1 in promoting oncogenic gene expression by stabilizing target mRNAs in a mainly 3'UTR, m6A-, miRNA-, and potentially AU-rich element dependent manner.
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Affiliation(s)
- Markus Glaß
- Institute of Molecular Medicine, Martin Luther University Halle-Wittenberg, Halle, Germany
| | - Danny Misiak
- Institute of Molecular Medicine, Martin Luther University Halle-Wittenberg, Halle, Germany
| | - Nadine Bley
- Institute of Molecular Medicine, Martin Luther University Halle-Wittenberg, Halle, Germany
| | - Simon Müller
- Institute of Molecular Medicine, Martin Luther University Halle-Wittenberg, Halle, Germany
| | - Sven Hagemann
- Institute of Molecular Medicine, Martin Luther University Halle-Wittenberg, Halle, Germany
| | - Bianca Busch
- Institute of Molecular Medicine, Martin Luther University Halle-Wittenberg, Halle, Germany
| | - Alexander Rausch
- Institute of Molecular Medicine, Martin Luther University Halle-Wittenberg, Halle, Germany
| | - Stefan Hüttelmaier
- Institute of Molecular Medicine, Martin Luther University Halle-Wittenberg, Halle, Germany
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Xue T, Liu X, Zhang M, E Q, Liu S, Zou M, Li Y, Ma Z, Han Y, Thompson P, Zhang X. PADI2-Catalyzed MEK1 Citrullination Activates ERK1/2 and Promotes IGF2BP1-Mediated SOX2 mRNA Stability in Endometrial Cancer. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2021; 8:2002831. [PMID: 33747724 PMCID: PMC7967072 DOI: 10.1002/advs.202002831] [Citation(s) in RCA: 38] [Impact Index Per Article: 12.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/28/2020] [Revised: 11/25/2020] [Indexed: 05/04/2023]
Abstract
Peptidylarginine deiminase II (PADI2) converts positively charged arginine residues to neutrally charged citrulline, and this activity has been associated with the onset and progression of multiple cancers. However, a role for PADI2 in endometrial cancer (EC) has not been previously explored. This study demonstrates that PADI2 is positively associated with EC proregression. Mechanistically, PADI2 interacting and catalyzing MEK1 citrullination at arginine 113/189 facilitates MEK1 on extracellular signal-regulated protein kinases 1/2 (ERK1/2) phosphorylation, which activates insulin-like growth factor-II binding protein 1 (IGF2BP1) expression. Furthermore, RNA immunoprecipitation (RIP) and RNA stability analyses reveal that IGF2BP1 binds to the m6A sites in SOX2-3'UTR to prevent SOX2 mRNA degradation. Dysregulation of IGF2BP1 by PADI2/MEK1/ERK signaling results in abnormal accumulation of oncogenic SOX2 expression, therefore supporting the malignant state of EC. Finally, PADI2 gene silencing, inhibiting MEK1 citrullination by PADI2 inhibitor, or mutation of MEK1 R113/189 equally inhibits EC progression. These data demonstrate that PADI2-catalyzed MEK1 R113/189 citrullination is a critical diver for EC malignancies and suggest that targeting PADI2/MEK1 can be a potential therapeutic approach in patients with EC.
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Affiliation(s)
- Teng Xue
- State Key Laboratory of Reproductive MedicineNanjing Medical UniversityNanjingJiangsu211166China
| | - Xiaoqiu Liu
- Key Laboratory of Pathogen Biology of Jiangsu ProvinceDepartment of MicrobiologyNanjing Medical UniversityNanjingJiangsu211166China
| | - Mei Zhang
- State Key Laboratory of Reproductive MedicineNanjing Medical UniversityNanjingJiangsu211166China
| | - Qiukai E
- State Key Laboratory of Reproductive MedicineNanjing Medical UniversityNanjingJiangsu211166China
| | - Shuting Liu
- State Key Laboratory of Reproductive MedicineNanjing Medical UniversityNanjingJiangsu211166China
| | - Maosheng Zou
- State Key Laboratory of Reproductive MedicineNanjing Medical UniversityNanjingJiangsu211166China
| | - Ying Li
- Department of ObstetricsDalian Municipal Maternal and Infant Health Care HospitalDalianLiaoning116000China
| | - Zhinan Ma
- Department of Obstetrics and GynecologyYangzhou Maternal and Child Health HospitalYangzhou UniversityYangzhouJiangsu225009China
| | - Yun Han
- Department of Obstetrics and GynecologyThe Second Affiliated Hospital of Nantong UniversityNantongJiangsu226001China
| | - Paul Thompson
- Department of Biochemistry and Molecular PharmacologyUniversity of Massachusetts Medical SchoolWorcesterMA01655USA
| | - Xuesen Zhang
- State Key Laboratory of Reproductive MedicineNanjing Medical UniversityNanjingJiangsu211166China
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Transcription Factor AP4 Mediates Cell Fate Decisions: To Divide, Age, or Die. Cancers (Basel) 2021; 13:cancers13040676. [PMID: 33567514 PMCID: PMC7914591 DOI: 10.3390/cancers13040676] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2021] [Revised: 01/31/2021] [Accepted: 02/03/2021] [Indexed: 12/12/2022] Open
Abstract
Simple Summary Here, we review the literature on Activating Enhancer-Binding Protein 4 (AP4)/transcription factor AP4 (TFAP4) function and regulation and its role in cancer. Elevated expression of AP4 was detected in tumors of various organs and is associated with poor patient survival. AP4 is encoded by a Myc target gene and mediates cell fate decisions by regulating multiple processes, such as cell proliferation, epithelial-mesenchymal transition, stemness, apoptosis, and cellular senescence. Thereby, AP4 may be critical for tumor initiation and progression. In this review article, we summarize published evidence showing how AP4 functions as a transcriptional activator and repressor of a plethora of direct target genes in various physiological and pathological conditions. We also highlight the complex interactions of AP4 with c-Myc, N-Myc, p53, lncRNAs, and miRNAs in feed-back loops, which control AP4 levels and mediate AP4 functions. In the future, a better understanding of AP4 may contribute to improved prognosis and therapy of cancer. Abstract Activating Enhancer-Binding Protein 4 (AP4)/transcription factor AP4 (TFAP4) is a basic-helix-loop-helix-leucine-zipper transcription factor that was first identified as a protein bound to SV40 promoters more than 30 years ago. Almost 15 years later, AP4 was characterized as a target of the c-Myc transcription factor, which is the product of a prototypic oncogene that is activated in the majority of tumors. Interestingly, AP4 seems to represent a central hub downstream of c-Myc and N-Myc that mediates some of their functions, such as proliferation and epithelial-mesenchymal transition (EMT). Elevated AP4 expression is associated with progression of cancer and poor patient prognosis in multiple tumor types. Deletion of AP4 in mice points to roles of AP4 in the control of stemness, tumor initiation and adaptive immunity. Interestingly, ex vivo AP4 inactivation results in increased DNA damage, senescence, and apoptosis, which may be caused by defective cell cycle progression. Here, we will summarize the roles of AP4 as a transcriptional repressor and activator of target genes and the contribution of protein and non-coding RNAs encoded by these genes, in regulating the above mentioned processes. In addition, proteins interacting with or regulating AP4 and the cellular signaling pathways altered after AP4 dysregulation in tumor cells will be discussed.
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25
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Wei L, Ling M, Yang S, Xie Y, Liu C, Yi W. Long noncoding RNA NBAT1 suppresses hepatocellular carcinoma progression via competitively associating with IGF2BP1 and decreasing c-Myc expression. Hum Cell 2021; 34:539-549. [PMID: 33387362 DOI: 10.1007/s13577-020-00464-1] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2020] [Accepted: 11/20/2020] [Indexed: 12/16/2022]
Abstract
Hepatocellular Carcinoma (HCC) is the second leading cause of cancer-related deaths. Neuroblastoma associated transcript 1 (NBAT1) is a newly identified long noncoding RNA (lncRNA), which has been reported to play an important role in human cancers. However, the functional role and underlying mechanism of NBAT1 in HCC remains unclear. Here, we found that the expression of NBAT1 was decreased in HCC tissues and cells; as well, the decreased expression of NBAT1 was also associated with tumor size and clinical TNM stages. NBAT1 overexpression, both in vitro and in vivo studies, inhibited tumorigenesis through apoptosis augmentation and cell cycle blockade. Mechanistically, NBAT1 bound to IGF2BP1 and inhibited the interaction between IGF2BP1 and c-Myc mRNA, thus suppressing the stability of c-Myc mRNA. Collectively, NBAT1 is associated with HCC tumorigenesis and could be a therapeutic target for HCC treatment.
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Affiliation(s)
- Ling Wei
- Department of Gastroenterology, The Second Affiliated Hospital, Hainan Medical University, Haikou, 570311, Hainan, China
| | - Mengzhi Ling
- Department of Gastroenterology, Cadre sanatorium of Hainan & Geriatric hospital of Hainan (CSH), Haikou, 571100, Hainan, China
| | - Song Yang
- Emergency Department, Hainan Cancer Hospital, Haikou, 570312, China
| | - Yunqian Xie
- Department of Gastroenterology, The Second Affiliated Hospital, Hainan Medical University, Haikou, 570311, Hainan, China
| | - Changjiang Liu
- Department of Gastroenterology, The Second Affiliated Hospital, Hainan Medical University, Haikou, 570311, Hainan, China
| | - Wenyi Yi
- General Department, The Second Affiliated Hospital, Hainan Medical University, No.48, Baishuitang Road, Haikou, 570311, Hainan, China.
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26
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Blocking the IGF2BP1-promoted glucose metabolism of colon cancer cells via direct de-stabilizing mRNA of the LDHA enhances anticancer effects. MOLECULAR THERAPY-NUCLEIC ACIDS 2021; 23:835-846. [PMID: 33614233 PMCID: PMC7868688 DOI: 10.1016/j.omtn.2020.12.020] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/19/2020] [Accepted: 12/19/2020] [Indexed: 01/01/2023]
Abstract
Colorectal cancer (CRC) is a commonly diagnosed cancer with poor prognosis and high mortality rate. Hyperthermia (HT) is an adjunctive therapy to enhance the antitumor effects of traditional chemo- or radio- therapy. Here, we report that a cluster of essential regulator genes and speed-limit enzymes of glucose metabolism were significantly elevated under HT from a glucose metabolism PCR array analysis. Under low glucose supply or glucose metabolism inhibition, CRC cells displayed increased sensitivity to HT treatments. By transcript sequencing from the established HT resistant (HTR) colon cancer cell line LoVo HTR, we observed that IGF2BP1, an RNA-binding protein, was significantly upregulated in HTR cells compared with parental cells. Furthermore, LDHA mRNA was identified as an IGF2BP1 direct target. An RNA immunoprecipitation assay and RNA pull-down assay consistently illustrated IGF2BP1 specifically bonds to the 3′ UTR of LDHA mRNA, leading to enhanced stability of LDHA mRNA. Finally, we demonstrated that inhibiting the IGF2BP1-promoted glycolysis sensitized colon cancer cells to HT treatment via both in vitro and in vivo experiments. Our findings suggest that targeting the IGF2BP1-LDHA-glycolysis pathway might be a promising therapeutic approach to enhance the anti-cancer effects of HT treatment.
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27
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Gao J, Tian L, Sun Y, Li W, Zhao L, Sun Y, Jing Z, Zhou L, Liu F, Zhao X. PURα mediates epithelial-mesenchymal transition to promote esophageal squamous cell carcinoma progression by regulating Snail2. Cancer Lett 2020; 498:98-110. [PMID: 33144099 DOI: 10.1016/j.canlet.2020.10.030] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2020] [Revised: 10/17/2020] [Accepted: 10/21/2020] [Indexed: 01/04/2023]
Abstract
Esophageal squamous cell carcinoma (ESCC) is one of the most common lethal cancers in the world. Dysregulation of purine-rich element binding protein alpha (PURα), which contributes to the initiation of PURΑ syndrome, is reportedly involved in the progression of multiple cancers, but its function and underlying mechanisms in ESCC progression remain unclear. Here, we first demonstrated that PURα promoted cell growth, migration and invasion in ESCC both in vitro and in vivo. An immunohistochemistry assay was then performed on 225 ESCC tissues, showing that high PURα expression was positively associated with lymph node metastasis and the AJCC stage, and the ESCC patients with positive PURα expression had worse survival. In addition, RNA sequencing implied that PURα induced epithelial-mesenchymal transition (EMT) in ESCC, which was further confirmed by qPCR, Western blotting and immunofluorescence analyses. Mechanistically, PURα enhanced the transcription of Snail2 by binding to its promoter region. Knockdown of Snail2 reversed PURα-induced EMT and inhibited the migration and invasion of ESCC cells. In conclusion, this study indicated that PURα promotes Snail2 transcriptional activity to induce EMT during ESCC progression.
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Affiliation(s)
- Jiajia Gao
- State Key Laboratory of Molecular Oncology, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, China
| | - Lusong Tian
- State Key Laboratory of Molecular Oncology, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, China
| | - Yulin Sun
- State Key Laboratory of Molecular Oncology, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, China
| | - Wei Li
- State Key Laboratory of Molecular Oncology, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, China
| | - Lina Zhao
- State Key Laboratory of Molecular Oncology, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, China
| | - Yan Sun
- State Key Laboratory of Molecular Oncology, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, China
| | - Zongpan Jing
- State Key Laboratory of Molecular Oncology, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, China
| | - Lanping Zhou
- State Key Laboratory of Molecular Oncology, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, China
| | - Fang Liu
- State Key Laboratory of Molecular Oncology, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, China
| | - Xiaohang Zhao
- State Key Laboratory of Molecular Oncology, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, China.
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Bley N, Schott A, Müller S, Misiak D, Lederer M, Fuchs T, Aßmann C, Glaß M, Ihling C, Sinz A, Pazaitis N, Wickenhauser C, Vetter M, Ungurs O, Strauss HG, Thomssen C, Hüttelmaier S. IGF2BP1 is a targetable SRC/MAPK-dependent driver of invasive growth in ovarian cancer. RNA Biol 2020; 18:391-403. [PMID: 32876513 PMCID: PMC7951963 DOI: 10.1080/15476286.2020.1812894] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022] Open
Abstract
Epithelial-to-mesenchymal transition (EMT) is a hallmark of aggressive, mesenchymal-like high-grade serous ovarian carcinoma (HGSOC). The SRC kinase is a key driver of cancer-associated EMT promoting adherens junction (AJ) disassembly by phosphorylation-driven internalization and degradation of AJ proteins. Here, we show that the IGF2 mRNA-binding protein 1 (IGF2BP1) is up-regulated in mesenchymal-like HGSOC and promotes SRC activation by a previously unknown protein-ligand-induced, but RNA-independent mechanism. IGF2BP1-driven invasive growth of ovarian cancer cells essentially relies on the SRC-dependent disassembly of AJs. Concomitantly, IGF2BP1 enhances ERK2 expression in an RNA-binding dependent manner. Together this reveals a post-transcriptional mechanism of interconnected stimulation of SRC/ERK signalling in ovarian cancer cells. The IGF2BP1-SRC/ERK2 axis is targetable by the SRC-inhibitor saracatinib and MEK-inhibitor selumetinib. However, due to IGF2BP1-directed stimulation, only combinatorial treatment effectively overcomes the IGF2BP1-promoted invasive growth in 3D culture conditions as well as intraperitoneal mouse models. In conclusion, we reveal an unexpected role of IGF2BP1 in enhancing SRC/MAPK-driven invasive growth of ovarian cancer cells. This provides a rationale for the therapeutic benefit of combinatorial SRC/MEK inhibition in mesenchymal-like HGSOC.
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Affiliation(s)
- Nadine Bley
- Sect. Molecular Cell Biology, Inst. of Molecular Medicine, Charles Tanford Protein Center, Medical Faculty, Martin Luther University Halle-Wittenberg, Halle, Germany
| | - Annekatrin Schott
- Sect. Molecular Cell Biology, Inst. of Molecular Medicine, Charles Tanford Protein Center, Medical Faculty, Martin Luther University Halle-Wittenberg, Halle, Germany
| | - Simon Müller
- Sect. Molecular Cell Biology, Inst. of Molecular Medicine, Charles Tanford Protein Center, Medical Faculty, Martin Luther University Halle-Wittenberg, Halle, Germany
| | - Danny Misiak
- Sect. Molecular Cell Biology, Inst. of Molecular Medicine, Charles Tanford Protein Center, Medical Faculty, Martin Luther University Halle-Wittenberg, Halle, Germany
| | - Marcell Lederer
- Sect. Molecular Cell Biology, Inst. of Molecular Medicine, Charles Tanford Protein Center, Medical Faculty, Martin Luther University Halle-Wittenberg, Halle, Germany
| | - Tommy Fuchs
- Sect. Molecular Cell Biology, Inst. of Molecular Medicine, Charles Tanford Protein Center, Medical Faculty, Martin Luther University Halle-Wittenberg, Halle, Germany
| | - Chris Aßmann
- Sect. Molecular Cell Biology, Inst. of Molecular Medicine, Charles Tanford Protein Center, Medical Faculty, Martin Luther University Halle-Wittenberg, Halle, Germany
| | - Markus Glaß
- Sect. Molecular Cell Biology, Inst. of Molecular Medicine, Charles Tanford Protein Center, Medical Faculty, Martin Luther University Halle-Wittenberg, Halle, Germany
| | - Christian Ihling
- Dept. of Pharmaceutical Chemistry & Bioanalytics, Inst. of Pharmacy, Charles Tanford Protein Center, Martin Luther University Halle-Wittenberg, Halle, Germany
| | - Andrea Sinz
- Dept. of Pharmaceutical Chemistry & Bioanalytics, Inst. of Pharmacy, Charles Tanford Protein Center, Martin Luther University Halle-Wittenberg, Halle, Germany
| | - Nikolaos Pazaitis
- Inst. of Pathology, Medical Faculty, Martin Luther University Halle-Wittenberg, Halle, Germany
| | - Claudia Wickenhauser
- Inst. of Pathology, Medical Faculty, Martin Luther University Halle-Wittenberg, Halle, Germany
| | - Martina Vetter
- Clinics for Gynecology, Medical Faculty, Martin Luther University Halle-Wittenberg, Halle, Germany
| | - Olga Ungurs
- Clinics for Gynecology, Medical Faculty, Martin Luther University Halle-Wittenberg, Halle, Germany
| | - Hans-Georg Strauss
- Clinics for Gynecology, Medical Faculty, Martin Luther University Halle-Wittenberg, Halle, Germany
| | - Christoph Thomssen
- Clinics for Gynecology, Medical Faculty, Martin Luther University Halle-Wittenberg, Halle, Germany
| | - Stefan Hüttelmaier
- Sect. Molecular Cell Biology, Inst. of Molecular Medicine, Charles Tanford Protein Center, Medical Faculty, Martin Luther University Halle-Wittenberg, Halle, Germany
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29
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Xie Q, Tang T, Pang J, Xu J, Yang X, Wang L, Huang Y, Huang Z, Liu G, Tong D, Zhang Y, Wang L, Zhang D, Lan W, Liu Q, Jiang J. LSD1 Promotes Bladder Cancer Progression by Upregulating LEF1 and Enhancing EMT. Front Oncol 2020; 10:1234. [PMID: 32850370 PMCID: PMC7399223 DOI: 10.3389/fonc.2020.01234] [Citation(s) in RCA: 28] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2020] [Accepted: 06/16/2020] [Indexed: 01/05/2023] Open
Abstract
Epithelial-to-mesenchymal transition (EMT) is one of the important underlying molecular mechanisms for most types of cancers including bladder cancer. The precise underlying molecular mechanism in EMT-mediated bladder cancer progression is far from completed. LSD1, a histone lysine-specific demethylase, is known to promote cancer cell proliferation, metastasis, and chemoresistance. We found in this study that LSD1 is highly upregulated in bladder cancer specimens, especially those underwent chemotherapy, and the elevated levels of LSD1 are highly associated with bladder cancer grades, metastasis status, and prognosis. Inhibiting or knockdown LSD1 repressed not only EMT process but also cancer progression. Mechanistically, LSD1 complexes with β-catenin to transcriptionally upregulate LEF1 and subsequently enhances EMT-mediated cancer progression. More importantly, LSD1 specific inhibitor GSK2879552 is capable of repressing tumor progression in patient-derived tumor xenograft. These findings altogether suggest that LSD1 can serve as not only a prognostic biomarker but also a promising therapeutic target in bladder cancer treatment.
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Affiliation(s)
- Qiubo Xie
- Department of Urology, Daping Hospital, Army Medical University, Chongqing, China
| | - Tang Tang
- Department of Urology, Daping Hospital, Army Medical University, Chongqing, China
| | - Jian Pang
- Department of Urology, Daping Hospital, Army Medical University, Chongqing, China
| | - Jing Xu
- Department of Urology, Daping Hospital, Army Medical University, Chongqing, China
| | - Xingxia Yang
- Department of Urology, Daping Hospital, Army Medical University, Chongqing, China
| | - Linang Wang
- Department of Urology, Daping Hospital, Army Medical University, Chongqing, China
| | - Yiqiang Huang
- Department of Urology, Daping Hospital, Army Medical University, Chongqing, China
| | - Zhuowei Huang
- Department of Urology, Daping Hospital, Army Medical University, Chongqing, China
| | - Gaolei Liu
- Department of Urology, Daping Hospital, Army Medical University, Chongqing, China
| | - Dali Tong
- Department of Urology, Daping Hospital, Army Medical University, Chongqing, China
| | - Yao Zhang
- Department of Urology, Daping Hospital, Army Medical University, Chongqing, China
| | - Luofu Wang
- Department of Urology, Daping Hospital, Army Medical University, Chongqing, China
| | - Dianzheng Zhang
- Department of Bio-Medical Sciences, Philadelphia College of Osteopathic Medicine, Philadelphia, PA, United States
| | - Weihua Lan
- Department of Urology, Daping Hospital, Army Medical University, Chongqing, China
| | - Qiuli Liu
- Department of Urology, Daping Hospital, Army Medical University, Chongqing, China
| | - Jun Jiang
- Department of Urology, Daping Hospital, Army Medical University, Chongqing, China
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30
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Rong Z, Wang Z, Wang X, Qin C, Geng W. Molecular interplay between linc01134 and YY1 dictates hepatocellular carcinoma progression. JOURNAL OF EXPERIMENTAL & CLINICAL CANCER RESEARCH : CR 2020; 39:61. [PMID: 32272940 PMCID: PMC7146959 DOI: 10.1186/s13046-020-01551-9] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/10/2019] [Accepted: 02/25/2020] [Indexed: 12/12/2022]
Abstract
Background Revealing the mechanical role of long non-coding RNAs (lncRNAs) in tumorigenesis can contribute to novel therapeutic target for cancers. The regulatory role of linc01134 in hepatocellular carcinoma (HCC) has not been studied yet. Materials and methods qRT-PCR and western blot were conducted to measure relevant RNA and protein expressions. CCK-8, colony formation, EdU, flow cytometry, wound-healing, transwell assays and xenograft experiments were performed to determine the role of linc01134 in HCC. ChIP and luciferase reporter assays were performed to analyze the effects of Yin Yang-1 (YY1) on linc01134 transcription activity. Relevant mechanical experiments were performed to verify interaction between relative genes. Results YY1 enhanced linc01134 transcription by interacting with linc01134 promoter. Knockdown of linc01134 inhibited proliferation, migration and epithelial-mesenchymal transition (EMT), yet promoting apoptosis in HCC cells. Mechanically, linc01134 acted as miR-324-5p sponge and interacted with insulin-like growth factor 2 mRNA binding protein 1 (IGF2BP1) to increase the stability of YY1 mRNA expression. Up-regulated YY1 continuously stimulated linc01134 expression by enhancing linc01134 promoter activity, forming a positive feedback loop. Conclusion Linc01134/miR-324-5p/IGF2BP1/YY1 feedback loop mediates HCC progression, which possibly provide prognosis and treatment target of HCC.
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Affiliation(s)
- Zhonghou Rong
- Department of Hepatobiliary Surgery, Shandong Provincial Hospital Affiliated to Shandong University, Jinan, Shandong, 250021, People's Republic of China
| | - Zhiyi Wang
- Department of Hepatobiliary Surgery, Shandong Provincial Hospital Affiliated to Shandong University, Jinan, Shandong, 250021, People's Republic of China
| | - Xinxing Wang
- Department of Hepatobiliary Surgery, Shandong Provincial Hospital Affiliated to Shandong University, Jinan, Shandong, 250021, People's Republic of China
| | - Chengkun Qin
- Department of Hepatobiliary Surgery, Shandong Provincial Hospital Affiliated to Shandong University, Jinan, Shandong, 250021, People's Republic of China
| | - Wenmao Geng
- Department of Hepatobiliary Surgery, Shandong Provincial Hospital Affiliated to Shandong University, Jinan, Shandong, 250021, People's Republic of China.
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Chaudhuri A, Das S, Das B. Localization elements and zip codes in the intracellular transport and localization of messenger RNAs in Saccharomyces cerevisiae. WILEY INTERDISCIPLINARY REVIEWS-RNA 2020; 11:e1591. [PMID: 32101377 DOI: 10.1002/wrna.1591] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/03/2019] [Revised: 02/05/2020] [Accepted: 02/07/2020] [Indexed: 12/13/2022]
Abstract
Intracellular trafficking and localization of mRNAs provide a mechanism of regulation of expression of genes with excellent spatial control. mRNA localization followed by localized translation appears to be a mechanism of targeted protein sorting to a specific cell-compartment, which is linked to the establishment of cell polarity, cell asymmetry, embryonic axis determination, and neuronal plasticity in metazoans. However, the complexity of the mechanism and the components of mRNA localization in higher organisms prompted the use of the unicellular organism Saccharomyces cerevisiae as a simplified model organism to study this vital process. Current knowledge indicates that a variety of mRNAs are asymmetrically and selectively localized to the tip of the bud of the daughter cells, to the vicinity of endoplasmic reticulum, mitochondria, and nucleus in this organism, which are connected to diverse cellular processes. Interestingly, specific cis-acting RNA localization elements (LEs) or RNA zip codes play a crucial role in the localization and trafficking of these localized mRNAs by providing critical binding sites for the specific RNA-binding proteins (RBPs). In this review, we present a comprehensive account of mRNA localization in S. cerevisiae, various types of localization elements influencing the mRNA localization, and the RBPs, which bind to these LEs to implement a number of vital physiological processes. Finally, we emphasize the significance of this process by highlighting their connection to several neuropathological disorders and cancers. This article is categorized under: RNA Export and Localization > RNA Localization.
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Affiliation(s)
- Anusha Chaudhuri
- Department of Life Science and Biotechnology, Jadavpur University, Kolkata, India
| | - Subhadeep Das
- Department of Life Science and Biotechnology, Jadavpur University, Kolkata, India
| | - Biswadip Das
- Department of Life Science and Biotechnology, Jadavpur University, Kolkata, India
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Silvestrini VC, Lanfredi GP, Masson AP, Poersch A, Ferreira GA, Thomé CH, Faça VM. A proteomics outlook towards the elucidation of epithelial-mesenchymal transition molecular events. Mol Omics 2020; 15:316-330. [PMID: 31429845 DOI: 10.1039/c9mo00095j] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
The main cause of death in cancer is the spread, or metastasis, of cancer cells to distant organs with consequent tumor formation. Additionally, metastasis is a process that demands special attention, as the cellular transformations make cancer at this stage very difficult or occasionally even impossible to be cured. The main process that converts epithelial tumor cells to mesenchymal-like metastatic cells is the Epithelial to Mesenchymal Transition (EMT). This process allows stationary and polarized epithelial cells, which are connected laterally to several types of junctions as well as the basement membrane, to undergo multiple biochemical changes that enable disruption of cell-cell adherence and apical-basal polarity. Moreover, the cells undergo important reprogramming to remodel the cytoskeleton and acquire mesenchymal characteristics such as enhanced migratory capacity, invasiveness, elevated resistance to apoptosis and a large increase in the production of ECM components. As expected, the alterations of the protein complement are extensive and complex, and thus exploring this by proteomic approaches is of particular interest. Here we review the overall findings of proteome modifications during EMT, mainly focusing on molecular signatures observed in multiple proteomic studies as well as coordinated pathways, cellular processes and their clinical relevance for altered proteins. As a result, an interesting set of proteins is highlighted as potential targets to be further investigated in the context of EMT, metastasis and cancer progression.
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Affiliation(s)
- Virgínia Campos Silvestrini
- Department of Biochemistry and Immunology - FMRP - University of São Paulo, Av. Bandeirantes, 3900, 14049-900, Ribeirão Preto, SP, Brazil.
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Tang L, Chen Y, Tang X, Wei D, Xu X, Yan F. Long Noncoding RNA DCST1-AS1 Promotes Cell Proliferation and Metastasis in Triple-negative Breast Cancer by Forming a Positive Regulatory Loop with miR-873-5p and MYC. J Cancer 2020; 11:311-323. [PMID: 31897227 PMCID: PMC6930439 DOI: 10.7150/jca.33982] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2019] [Accepted: 09/22/2019] [Indexed: 02/07/2023] Open
Abstract
Background: DC-STAMP domain containing 1-antisense 1 (DCST1-AS1) is a long noncoding RNA (lncRNA) that is up-regulated in triple-negative breast cancer (TNBC) tissues. Here, we attempt to investigate the oncogenic property of DCST1-AS1. Methods: LncRNA microarrays were used to detect differentially expressed lncRNA in cancerous tissues. Fluorescence in situ hybridization assay was used to detect the distribution of DCST1-AS1 in BT-549 and MDA-MB-231 cells. Lentiviral systems, inhibitors, siRNA and overexpression plasmids were used for gain- and loss-of-function experiments. Colony formation assay, wound healing assay, CCK8 assay, transwell assay, and flow cytometry assay were used to study the function of DCST1-AS1. Luciferase assay was used to verify the binding of MYC to the promoter region and the binding of miR-873-5p to DCST1-AS1. RNA immunoprecipitation assay was used to verify that argonaute 2 binds to both miR-873-5p and DCST1-AS1. Western blotting was used to measure changes in protein expression. Results: Consistent with the microarray results, we found that DCST1-AS1 was up-regulated in both TNBC tissue samples and cell lines. DCST1-AS1 was positively correlated with distant metastasis and histopathological grades. DCST1-AS1 is distributed in both nucleus and cytoplasm. Knockdown of DCST1-AS1 inhibits TNBC cell proliferation and metastasis, while overexpression of DCST1-AS1 promotes TNBC cell proliferation and metastasis. We confirmed that DCST1-AS1 expression in TNBC cells is regulated by MYC. Furthermore, we found that DCST1-AS1 is negatively correlated with miR-873-5p in TNBC tissues and is a direct target gene of miR-873-5p. Argonaute 2 is involved in the binding of DCST1-AS1 and miR-873-5p and promotes the degradation of DCST1-AS1. The interaction of DCST1-AS1 with miR-873-5p ultimately up-regulated the expression of insulin-like growth factor 2 mRNA binding protein 1 (IGF2BP1), MYC, CD44 and lymphoid enhancer binding factor 1 (LEF1). Conclusions:DCST1-AS1 is activated by MYC and is degraded by binding to miR-873-5p, thereby upregulating the expression of miR-873-5p downstream proteins IGF2BP1, MYC, LEF1 and CD44. MYC, DCST1-AS1 and miR-873-5p form a positive regulatory loop to promote TNBC cell proliferation and metastasis.
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Affiliation(s)
- Li Tang
- Department of Clinical Laboratory, Jiangsu Cancer Hospital & Jiangsu Institute of Cancer Research & the Affiliated Cancer Hospital of Nanjing Medical University, Nanjing 210009, P. R. China
| | - Yuli Chen
- Department of Clinical Laboratory, Nanjing Qixia District Hospital, Nanjing 210000, P. R. China
| | - Xun Tang
- Department of Clinical Laboratory, Jiangsu Cancer Hospital & Jiangsu Institute of Cancer Research & the Affiliated Cancer Hospital of Nanjing Medical University, Nanjing 210009, P. R. China
| | - Da Wei
- Department of Surgery, Jiangsu Cancer Hospital & Jiangsu Institute of Cancer Research & the Affiliated Cancer Hospital of Nanjing Medical University, Nanjing 210009, P. R. China
| | - Xinyu Xu
- Department of Pathology, Jiangsu Cancer Hospital & Jiangsu Institute of Cancer Research & the Affiliated Cancer Hospital of Nanjing Medical University, Nanjing 210009, P. R. China
| | - Feng Yan
- Department of Clinical Laboratory, Jiangsu Cancer Hospital & Jiangsu Institute of Cancer Research & the Affiliated Cancer Hospital of Nanjing Medical University, Nanjing 210009, P. R. China
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Elcheva IA, Wood T, Chiarolanzio K, Chim B, Wong M, Singh V, Gowda CP, Lu Q, Hafner M, Dovat S, Liu Z, Muljo SA, Spiegelman VS. RNA-binding protein IGF2BP1 maintains leukemia stem cell properties by regulating HOXB4, MYB, and ALDH1A1. Leukemia 2019; 34:1354-1363. [PMID: 31768017 PMCID: PMC7196026 DOI: 10.1038/s41375-019-0656-9] [Citation(s) in RCA: 94] [Impact Index Per Article: 18.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2019] [Revised: 10/24/2019] [Accepted: 11/13/2019] [Indexed: 02/08/2023]
Abstract
Insulin-like growth factor 2 mRNA-binding protein 1 (IGF2BP1) is an oncofetal protein expressed in various cancers including leukemia. In this study, we assessed the role of IGF2BP1 in orchestrating leukemia stem cell properties. Tumor-initiating potential, sensitivity to chemotherapeutic agents, and expression of cancer stem cell markers were assessed in a panel of myeloid, B-, and T-cell leukemia cell lines using gain- and loss-of-function systems, cross-linking immunoprecipitation (CLIP), and photoactivatable ribonucleoside-enhanced cross-linking and immunoprecipitation (PAR-CLIP) techniques. Here, we report that genetic or chemical inhibition of IGF2BP1 decreases leukemia cells' tumorigenicity, promotes myeloid differentiation, increases leukemia cell death, and sensitizes leukemia cells to chemotherapeutic drugs. IGF2BP1 affects proliferation and tumorigenic potential of leukemia cells through critical regulators of self-renewal HOXB4 and MYB and through regulation of expression of the aldehyde dehydrogenase, ALDH1A1. Our data indicate that IGF2BP1 maintains leukemia stem cell properties by regulating multiple pathways of stemness through transcriptional and metabolic factors.
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Affiliation(s)
- Irina A Elcheva
- Division of Pediatric Hematology and Oncology, Department of Pediatrics, Pennsylvania State University College of Medicine, Hershey, PA, USA.
| | - Tyler Wood
- Division of Pediatric Hematology and Oncology, Department of Pediatrics, Pennsylvania State University College of Medicine, Hershey, PA, USA
| | - Kathryn Chiarolanzio
- Division of Pediatric Hematology and Oncology, Department of Pediatrics, Pennsylvania State University College of Medicine, Hershey, PA, USA
| | - Bryan Chim
- Integrative Immunobiology Section, Laboratory of Immune System Biology, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD, 20892, USA
| | - Madeline Wong
- Integrative Immunobiology Section, Laboratory of Immune System Biology, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD, 20892, USA
| | - Vikash Singh
- Division of Pediatric Hematology and Oncology, Department of Pediatrics, Pennsylvania State University College of Medicine, Hershey, PA, USA
| | - Chethana P Gowda
- Division of Pediatric Hematology and Oncology, Department of Pediatrics, Pennsylvania State University College of Medicine, Hershey, PA, USA
| | - Qingli Lu
- Division of Pediatric Hematology and Oncology, Department of Pediatrics, Pennsylvania State University College of Medicine, Hershey, PA, USA
| | - Markus Hafner
- Laboratory of Muscle Stem Cells and Gene Regulation, National Institute of Arthritis and Musculoskeletal and Skin Diseases, National Institutes of Health, Bethesda, MD, 20892, USA
| | - Sinisa Dovat
- Division of Pediatric Hematology and Oncology, Department of Pediatrics, Pennsylvania State University College of Medicine, Hershey, PA, USA
| | - Zhenqiu Liu
- Division of Pediatric Hematology and Oncology, Department of Pediatrics, Pennsylvania State University College of Medicine, Hershey, PA, USA.,Department of Public Health Sciences, Pennsylvania State University College of Medicine, Penn State Cancer Institute, Hershey, PA, USA
| | - Stefan A Muljo
- Integrative Immunobiology Section, Laboratory of Immune System Biology, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD, 20892, USA
| | - Vladimir S Spiegelman
- Division of Pediatric Hematology and Oncology, Department of Pediatrics, Pennsylvania State University College of Medicine, Hershey, PA, USA.
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Werner S, Lützkendorf J, Müller T, Müller LP, Posern G. MRTF-A controls myofibroblastic differentiation of human multipotent stromal cells and their tumour-supporting function in xenograft models. Sci Rep 2019; 9:11725. [PMID: 31409840 PMCID: PMC6692381 DOI: 10.1038/s41598-019-48142-z] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2019] [Accepted: 07/18/2019] [Indexed: 12/12/2022] Open
Abstract
Tumour growth and metastatic colonization is strongly influenced by the tumour stroma, including cancer-associated fibroblasts (CAF). Multipotent mesenchymal stromal cells (MSC) are a possible source of CAF following myofibroblastic differentiation, and we have previously shown that MSC support tumour growth. Triggered by tumour cell-derived factors like transforming growth factor β1 (TGF-β1), myofibroblastic MSC differentiation is associated with the increased expression of markers including alpha smooth muscle actin (α-SMA). Here we show that myocardin-related transcription factor A (MRTF-A) plays an important role in myofibroblastic differentiation of primary human MSC in vitro and their tumour-supporting function in vivo. Recombinant TGF-β1 or tumour cell conditioned medium (TCM) elevated α-SMA, calponin 1 and collagen 1 A1 (COL1A1) amount on mRNA and protein level in MSC. This correlated with increased MRTF-A activity during MSC differentiation. MRTF-A knockdown by siRNA or shRNA impaired TGF-β1 and TCM induction of α-SMA and calponin 1, but not of COL1A1. Mixed xenograft experiments using HCT8 colorectal carcinoma cells and primary MSC of different donors revealed a significant reduction in tumour weight and volume upon MRTF-A knockdown in MSC. Our study suggests that MRTF-A is involved in the functional differentiation of MSC towards a tumour-promoting CAF phenotype in vivo.
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Affiliation(s)
- Sara Werner
- Institute for Physiological Chemistry, Medical Faculty, Martin Luther University Halle-Wittenberg, Hollystrasse 1, 06114, Halle (Saale), Germany
| | - Jana Lützkendorf
- University Clinic of Internal Medicine IV, Medical Faculty, Martin Luther University Halle-Wittenberg, Ernst-Grube-Strasse 40, 06120, Halle (Saale), Germany
| | - Thomas Müller
- University Clinic of Internal Medicine IV, Medical Faculty, Martin Luther University Halle-Wittenberg, Ernst-Grube-Strasse 40, 06120, Halle (Saale), Germany
| | - Lutz P Müller
- University Clinic of Internal Medicine IV, Medical Faculty, Martin Luther University Halle-Wittenberg, Ernst-Grube-Strasse 40, 06120, Halle (Saale), Germany.
| | - Guido Posern
- Institute for Physiological Chemistry, Medical Faculty, Martin Luther University Halle-Wittenberg, Hollystrasse 1, 06114, Halle (Saale), Germany.
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Müller S, Bley N, Glaß M, Busch B, Rousseau V, Misiak D, Fuchs T, Lederer M, Hüttelmaier S. IGF2BP1 enhances an aggressive tumor cell phenotype by impairing miRNA-directed downregulation of oncogenic factors. Nucleic Acids Res 2019; 46:6285-6303. [PMID: 29660014 PMCID: PMC6158595 DOI: 10.1093/nar/gky229] [Citation(s) in RCA: 90] [Impact Index Per Article: 18.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2017] [Accepted: 03/20/2018] [Indexed: 12/12/2022] Open
Abstract
The oncofetal IGF2 mRNA binding proteins (IGF2BPs) are upregulated in most cancers but their paralogue-specific roles in tumor cells remain poorly understood. In a panel of five cancer-derived cell lines, IGF2BP1 shows highly conserved oncogenic potential. Consistently, the deletion of IGF2BP1 impairs the growth and metastasis of ovarian cancer-derived cells in nude mice. Gene expression analyses in ovarian cancer-derived cells reveal that the knockdown of IGF2BPs is associated with the downregulation of mRNAs that are prone to miRNA regulation. All three IGF2BPs preferentially associate upstream of miRNA binding sites (MBSs) in the 3′UTR of mRNAs. The downregulation of mRNAs co-regulated by miRNAs and IGF2BP1 is abrogated at low miRNA abundance or when miRNAs are depleted. IGF2BP1 associates with these target mRNAs in RISC-free complexes and its deletion enhances their association with AGO2. The knockdown of most miRNA-regulated target mRNAs of IGF2BP1 impairs tumor cell properties. In four primary cancers, elevated synthesis of these target mRNAs is largely associated with upregulated IGF2BP1 mRNA levels. In ovarian cancer, the enhanced expression of IGF2BP1 and most of its miRNA-controlled target mRNAs is associated with poor prognosis. In conclusion, these findings indicate that IGF2BP1 enhances an aggressive tumor cell phenotype by antagonizing miRNA-impaired gene expression.
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Affiliation(s)
- Simon Müller
- Institute of Molecular Medicine, Section for Molecular Cell Biology, Faculty of Medicine, Martin Luther University Halle-Wittenberg, Kurt-Mothes-Str. 3a, 06120 Halle, Germany
| | - Nadine Bley
- Institute of Molecular Medicine, Section for Molecular Cell Biology, Faculty of Medicine, Martin Luther University Halle-Wittenberg, Kurt-Mothes-Str. 3a, 06120 Halle, Germany
| | - Markus Glaß
- Institute of Molecular Medicine, Section for Molecular Cell Biology, Faculty of Medicine, Martin Luther University Halle-Wittenberg, Kurt-Mothes-Str. 3a, 06120 Halle, Germany
| | - Bianca Busch
- Institute of Molecular Medicine, Section for Molecular Cell Biology, Faculty of Medicine, Martin Luther University Halle-Wittenberg, Kurt-Mothes-Str. 3a, 06120 Halle, Germany
| | - Vanessa Rousseau
- Institute of Molecular Medicine, Section for Molecular Cell Biology, Faculty of Medicine, Martin Luther University Halle-Wittenberg, Kurt-Mothes-Str. 3a, 06120 Halle, Germany
| | - Danny Misiak
- Institute of Molecular Medicine, Section for Molecular Cell Biology, Faculty of Medicine, Martin Luther University Halle-Wittenberg, Kurt-Mothes-Str. 3a, 06120 Halle, Germany
| | - Tommy Fuchs
- Institute of Molecular Medicine, Section for Molecular Cell Biology, Faculty of Medicine, Martin Luther University Halle-Wittenberg, Kurt-Mothes-Str. 3a, 06120 Halle, Germany
| | - Marcell Lederer
- Institute of Molecular Medicine, Section for Molecular Cell Biology, Faculty of Medicine, Martin Luther University Halle-Wittenberg, Kurt-Mothes-Str. 3a, 06120 Halle, Germany
| | - Stefan Hüttelmaier
- Institute of Molecular Medicine, Section for Molecular Cell Biology, Faculty of Medicine, Martin Luther University Halle-Wittenberg, Kurt-Mothes-Str. 3a, 06120 Halle, Germany
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Müller S, Glaß M, Singh AK, Haase J, Bley N, Fuchs T, Lederer M, Dahl A, Huang H, Chen J, Posern G, Hüttelmaier S. IGF2BP1 promotes SRF-dependent transcription in cancer in a m6A- and miRNA-dependent manner. Nucleic Acids Res 2019; 47:375-390. [PMID: 30371874 PMCID: PMC6326824 DOI: 10.1093/nar/gky1012] [Citation(s) in RCA: 256] [Impact Index Per Article: 51.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2018] [Revised: 10/09/2018] [Accepted: 10/17/2018] [Indexed: 12/13/2022] Open
Abstract
The oncofetal mRNA-binding protein IGF2BP1 and the transcriptional regulator SRF modulate gene expression in cancer. In cancer cells, we demonstrate that IGF2BP1 promotes the expression of SRF in a conserved and N6-methyladenosine (m6A)-dependent manner by impairing the miRNA-directed decay of the SRF mRNA. This results in enhanced SRF-dependent transcriptional activity and promotes tumor cell growth and invasion. At the post-transcriptional level, IGF2BP1 sustains the expression of various SRF-target genes. The majority of these SRF/IGF2BP1-enhanced genes, including PDLIM7 and FOXK1, show conserved upregulation with SRF and IGF2BP1 synthesis in cancer. PDLIM7 and FOXK1 promote tumor cell growth and were reported to enhance cell invasion. Consistently, 35 SRF/IGF2BP1-dependent genes showing conserved association with SRF and IGF2BP1 expression indicate a poor overall survival probability in ovarian, liver and lung cancer. In conclusion, these findings identify the SRF/IGF2BP1-, miRNome- and m6A-dependent control of gene expression as a conserved oncogenic driver network in cancer.
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Affiliation(s)
- Simon Müller
- Institute of Molecular Medicine, Section for Molecular Cell Biology, Faculty of Medicine, Martin Luther University Halle-Wittenberg, Charles Tanford protein center, Kurt-Mothes-Str. 3a, 06120 Halle, Germany
| | - Markus Glaß
- Institute of Molecular Medicine, Section for Molecular Cell Biology, Faculty of Medicine, Martin Luther University Halle-Wittenberg, Charles Tanford protein center, Kurt-Mothes-Str. 3a, 06120 Halle, Germany
| | - Anurag K Singh
- Institute for Physiological Chemistry, Medical Faculty, Martin Luther University Halle-Wittenberg, 06114 Halle (Saale), Germany
| | - Jacob Haase
- Institute of Molecular Medicine, Section for Molecular Cell Biology, Faculty of Medicine, Martin Luther University Halle-Wittenberg, Charles Tanford protein center, Kurt-Mothes-Str. 3a, 06120 Halle, Germany
| | - Nadine Bley
- Institute of Molecular Medicine, Section for Molecular Cell Biology, Faculty of Medicine, Martin Luther University Halle-Wittenberg, Charles Tanford protein center, Kurt-Mothes-Str. 3a, 06120 Halle, Germany
| | - Tommy Fuchs
- Institute of Molecular Medicine, Section for Molecular Cell Biology, Faculty of Medicine, Martin Luther University Halle-Wittenberg, Charles Tanford protein center, Kurt-Mothes-Str. 3a, 06120 Halle, Germany
| | - Marcell Lederer
- Institute of Molecular Medicine, Section for Molecular Cell Biology, Faculty of Medicine, Martin Luther University Halle-Wittenberg, Charles Tanford protein center, Kurt-Mothes-Str. 3a, 06120 Halle, Germany
| | - Andreas Dahl
- Deep Sequencing Group, Center for Molecular and Cellular Bioengineering, Technische Universität Dresden, Tatzberg 47/49, 01307 Dresden
| | - Huilin Huang
- Department of Systems Biology, City of Hope, Monrovia, CA 91016, USA
- Department of Cancer Biology, University of Cincinnati College of Medicine, Cincinnati, OH 45219, USA
| | - Jianjun Chen
- Department of Systems Biology, City of Hope, Monrovia, CA 91016, USA
- Department of Cancer Biology, University of Cincinnati College of Medicine, Cincinnati, OH 45219, USA
| | - Guido Posern
- Institute for Physiological Chemistry, Medical Faculty, Martin Luther University Halle-Wittenberg, 06114 Halle (Saale), Germany
| | - Stefan Hüttelmaier
- Institute of Molecular Medicine, Section for Molecular Cell Biology, Faculty of Medicine, Martin Luther University Halle-Wittenberg, Charles Tanford protein center, Kurt-Mothes-Str. 3a, 06120 Halle, Germany
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Möller B, Zergiebel L, Bürstenbinder K. Quantitative and Comparative Analysis of Global Patterns of (Microtubule) Cytoskeleton Organization with CytoskeletonAnalyzer2D. Methods Mol Biol 2019; 1992:151-171. [PMID: 31148037 DOI: 10.1007/978-1-4939-9469-4_10] [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] [Indexed: 02/12/2023]
Abstract
The microtubule cytoskeleton plays important roles in cell morphogenesis. To investigate the mechanisms of cytoskeletal organization, for example, during growth or development, in genetic studies, or in response to environmental stimuli, image analysis tools for quantitative assessment are needed. Here, we present a method for texture measure-based quantification and comparative analysis of global microtubule cytoskeleton patterns and subsequent visualization of output data. In contrast to other approaches that focus on the extraction of individual cytoskeletal fibers and analysis of their orientation relative to the growth axis, CytoskeletonAnalyzer2D quantifies cytoskeletal organization based on the analysis of local binary patterns. CytoskeletonAnalyzer2D thus is particularly well suited to study cytoskeletal organization in cells where individual fibers are difficult to extract or which lack a clearly defined growth axis, such as leaf epidermal pavement cells. The tool is available as ImageJ plugin and can be combined with publicly available software and tools, such as R and Cytoscape, to visualize similarity networks of cytoskeletal patterns.
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Affiliation(s)
- Birgit Möller
- Institute of Computer Science, Martin Luther University Halle-Wittenberg, Halle (Saale), Germany
| | - Luise Zergiebel
- Department of Molecular Signal Processing, Leibniz Institute of Plant Biochemistry (IPB), Halle (Saale), Germany
| | - Katharina Bürstenbinder
- Department of Molecular Signal Processing, Leibniz Institute of Plant Biochemistry (IPB), Halle (Saale), Germany.
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39
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Bovaird S, Patel D, Padilla JCA, Lécuyer E. Biological functions, regulatory mechanisms, and disease relevance of RNA localization pathways. FEBS Lett 2018; 592:2948-2972. [PMID: 30132838 DOI: 10.1002/1873-3468.13228] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2018] [Revised: 08/06/2018] [Accepted: 08/17/2018] [Indexed: 12/12/2022]
Abstract
The asymmetric subcellular distribution of RNA molecules from their sites of transcription to specific compartments of the cell is an important aspect of post-transcriptional gene regulation. This involves the interplay of intrinsic cis-regulatory elements within the RNA molecules with trans-acting RNA-binding proteins and associated factors. Together, these interactions dictate the intracellular localization route of RNAs, whose downstream impacts have wide-ranging implications in cellular physiology. In this review, we examine the mechanisms underlying RNA localization and discuss their biological significance. We also review the growing body of evidence pointing to aberrant RNA localization pathways in the development and progression of diseases.
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Affiliation(s)
- Samantha Bovaird
- Institut de recherches cliniques de Montréal (IRCM), QC, Canada.,Division of Experimental Medicine, Faculty of Medicine, McGill University, Montreal, QC, Canada
| | - Dhara Patel
- Institut de recherches cliniques de Montréal (IRCM), QC, Canada.,Molecular Biology Program, Faculty of Medicine, Université de Montréal, QC, Canada
| | - Juan-Carlos Alberto Padilla
- Institut de recherches cliniques de Montréal (IRCM), QC, Canada.,Division of Experimental Medicine, Faculty of Medicine, McGill University, Montreal, QC, Canada
| | - Eric Lécuyer
- Institut de recherches cliniques de Montréal (IRCM), QC, Canada.,Division of Experimental Medicine, Faculty of Medicine, McGill University, Montreal, QC, Canada.,Molecular Biology Program, Faculty of Medicine, Université de Montréal, QC, Canada.,Department of Biochemistry and Molecular Medicine, Université de Montréal, QC, Canada
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40
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Seifert A, Posern G. Tightly controlled MRTF-A activity regulates epithelial differentiation during formation of mammary acini. Breast Cancer Res 2017; 19:68. [PMID: 28592291 PMCID: PMC5463372 DOI: 10.1186/s13058-017-0860-3] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2017] [Accepted: 05/25/2017] [Indexed: 01/06/2023] Open
Abstract
Background Myocardin-related transcription factors (MRTF) A and B link actin dynamics and mechanotransduction to gene expression. In mice, MRTF-A is involved in mammary gland differentiation, but its role in human mammary epithelial cells remains unclear. Methods Three-dimensional cultures of human mammary epithelial MCF10A cells were used to model acinar morphogenesis. Stable MRTF-A knockdown, MRTF-A/B rescue and MRTF-A/B overexpression was established to characterize the functional role during morphogenesis using confocal microscopy and expression analysis. Breast cancer patient databases were analyzed for MRTF-A expression. Results We showed that a precise temporal control of MRTFs is required for normal morphogenesis of MCF10A mammary acini. MRTF transcriptional activity, but not their protein amounts, is transiently induced during 3D acini formation. MRTF-A knockdown dramatically reduces acini size and prevents lumen formation. These effects are rescued by re-expression of MRTF-A, and partially by MRTF-B. Conversely, overexpression of MRTF-A and MRTF-B increases acini size, resulting in irregular spheroids without lumen and defective apico-basal polarity. These phenotypes correlate with deregulated expression of cell cycle inhibitors p21/Waf1, p27/Kip1 and altered phosphorylation of retinoblastoma protein. In MRTF overexpressing spheroids, proliferation and apoptosis are simultaneously increased at late stages, whilst neither occurs in control acini. MRTFs interfere with anoikis of the inner cells and cause an integrin switch from α6 to α5, repression of E-cadherin and induction of mesenchymal markers vimentin, Snai2 and Zeb1. Moreover, MRTF-overexpressing spheroids are insensitive to alteration in matrix stiffness. In two breast cancer cohorts, high expression of MRTF-A and known target genes was associated with decreased patient survival. Conclusion MRTF-A is required for proliferation and formation of mammary acini from luminal epithelial cells. Conversely, elevated MRTF activity results in pre-malignant spheroid formation due to defective proliferation, polarity loss and epithelial-mesenchymal transition. Electronic supplementary material The online version of this article (doi:10.1186/s13058-017-0860-3) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Anja Seifert
- Institute for Physiological Chemistry, Medical Faculty, Martin Luther University Halle-Wittenberg, 06114, Halle (Saale), Germany
| | - Guido Posern
- Institute for Physiological Chemistry, Medical Faculty, Martin Luther University Halle-Wittenberg, 06114, Halle (Saale), Germany.
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41
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Santiago L, Daniels G, Wang D, Deng FM, Lee P. Wnt signaling pathway protein LEF1 in cancer, as a biomarker for prognosis and a target for treatment. Am J Cancer Res 2017; 7:1389-1406. [PMID: 28670499 PMCID: PMC5489786] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2017] [Accepted: 04/08/2017] [Indexed: 06/07/2023] Open
Abstract
Transcription factors are regulatory proteins that either activate or repress the transcription of genes via binding to DNA regulatory sequences and regulating recruitment of transcriptional complexes. Lymphoid enhancer-binding factor 1 (LEF1), a member of the T-cell Factor (TCF)/LEF1 family of high-mobility group transcription factors, is a downstream mediator of the Wnt/β-catenin signaling pathway, but can also modulate gene transcription independently. LEF1 is essential in stem cell maintenance and organ development, especially in its role in epithelial-mesenchymal transition (EMT) by activating the transcription of hallmark EMT effectors including N-Cadherin, Vimentin, and Snail. Aberrant expression of LEF1 is implicated in tumorigenesis and cancer cell proliferation, migration, and invasion. LEF1's activity in particular cancer cell types, such as chronic lymphocytic leukemia (CLL), Burkitt lymphoma (BL), acute lymphoblastic leukemia (ALL), oral squamous cell carcinoma (OSCC), and colorectal cancer (CRC), makes it a valuable biomarker in predicting patient prognosis. Additionally, due to aberrant LEF1 activity resulting in cancer progression, knockdown and inhibition treatments designed to target LEF1 have proven effective in alleviating cancer growth, migration, and invasion in CLL, CRC, glioblastoma multiforme (GBM), and renal cell carcinoma (RCC). In prostate cancer cells, LEF1 promotes androgen receptor expression and activity in an androgen-independent manner, ultimately increasing prostate cancer growth regardless of androgen ablation therapy. In this review, we review LEF1 regulation, its role in tumorigenesis in several cancer types, and its clinical value as a biomarker for predicting prognoses and as a target for treatment.
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Affiliation(s)
- Larion Santiago
- Department of Pathology, School of Medicine, New York UniversityNew York, American
| | - Garrett Daniels
- Department of Pathology, School of Medicine, New York UniversityNew York, American
| | - Dongwen Wang
- Department of Urology, First Hospital of Shanxi Medical UniversityTaiyuan, Shanxi, China
| | - Fang-Ming Deng
- Department of Pathology, School of Medicine, New York UniversityNew York, American
- Association of Chinese American PhysiciansFlushing, New York, American
| | - Peng Lee
- Department of Pathology, School of Medicine, New York UniversityNew York, American
- Department of Urology, School of Medicine, New York UniversityNew York, American
- Department of NYU Cancer Institute, School of Medicine, New York UniversityNew York, American
- Department of New York Harbor Healthcare System, School of Medicine, New York UniversityNew York, American
- Association of Chinese American PhysiciansFlushing, New York, American
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42
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Mishra VK, Subramaniam M, Kari V, Pitel KS, Baumgart SJ, Naylor RM, Nagarajan S, Wegwitz F, Ellenrieder V, Hawse JR, Johnsen SA. Krüppel-like Transcription Factor KLF10 Suppresses TGFβ-Induced Epithelial-to-Mesenchymal Transition via a Negative Feedback Mechanism. Cancer Res 2017; 77:2387-2400. [PMID: 28249899 DOI: 10.1158/0008-5472.can-16-2589] [Citation(s) in RCA: 45] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2016] [Revised: 10/24/2016] [Accepted: 02/16/2017] [Indexed: 12/27/2022]
Abstract
TGFβ-SMAD signaling exerts a contextual effect that suppresses malignant growth early in epithelial tumorigenesis but promotes metastasis at later stages. Longstanding challenges in resolving this functional dichotomy may uncover new strategies to treat advanced carcinomas. The Krüppel-like transcription factor, KLF10, is a pivotal effector of TGFβ/SMAD signaling that mediates antiproliferative effects of TGFβ. In this study, we show how KLF10 opposes the prometastatic effects of TGFβ by limiting its ability to induce epithelial-to-mesenchymal transition (EMT). KLF10 depletion accentuated induction of EMT as assessed by multiple metrics. KLF10 occupied GC-rich sequences in the promoter region of the EMT-promoting transcription factor SLUG/SNAI2, repressing its transcription by recruiting HDAC1 and licensing the removal of activating histone acetylation marks. In clinical specimens of lung adenocarcinoma, low KLF10 expression associated with decreased patient survival, consistent with a pivotal role for KLF10 in distinguishing the antiproliferative versus prometastatic functions of TGFβ. Our results establish that KLF10 functions to suppress TGFβ-induced EMT, establishing a molecular basis for the dichotomy of TGFβ function during tumor progression. Cancer Res; 77(9); 2387-400. ©2017 AACR.
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Affiliation(s)
- Vivek Kumar Mishra
- Department of General, Visceral and Pediatric Surgery, University Medical Center Göttingen, Göttingen Center for Molecular Biosciences, Göttingen, Germany
| | | | - Vijayalakshmi Kari
- Department of General, Visceral and Pediatric Surgery, University Medical Center Göttingen, Göttingen Center for Molecular Biosciences, Göttingen, Germany
| | - Kevin S Pitel
- Department of Biochemistry and Molecular Biology, Mayo Clinic, Rochester, Minnesota
| | - Simon J Baumgart
- Department of General, Visceral and Pediatric Surgery, University Medical Center Göttingen, Göttingen Center for Molecular Biosciences, Göttingen, Germany
| | - Ryan M Naylor
- Department of Biochemistry and Molecular Biology, Mayo Clinic, Rochester, Minnesota
| | - Sankari Nagarajan
- Department of General, Visceral and Pediatric Surgery, University Medical Center Göttingen, Göttingen Center for Molecular Biosciences, Göttingen, Germany
| | - Florian Wegwitz
- Department of General, Visceral and Pediatric Surgery, University Medical Center Göttingen, Göttingen Center for Molecular Biosciences, Göttingen, Germany
| | - Volker Ellenrieder
- Department of Gastroenterology and Gastrointestinal Oncology, University Medical Center Göttingen, Göttingen, Germany
| | - John R Hawse
- Department of Biochemistry and Molecular Biology, Mayo Clinic, Rochester, Minnesota.
| | - Steven A Johnsen
- Department of General, Visceral and Pediatric Surgery, University Medical Center Göttingen, Göttingen Center for Molecular Biosciences, Göttingen, Germany.
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Wu Y, Zhong JL, Hou N, Sun Y, Ma B, Nisar MF, Teng Y, Tan Z, Chen K, Wang Y, Yang X. MicroRNA Let-7b inhibits keratinocyte migration in cutaneous wound healing by targeting IGF2BP2. Exp Dermatol 2017; 26:116-123. [DOI: 10.1111/exd.13164] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 08/02/2016] [Indexed: 12/12/2022]
Affiliation(s)
- Yan Wu
- State Key Laboratory of Proteomics; Genetic Laboratory of Development and Diseases; Institute of Biotechnology; Beijing China
- 111 Project Laboratory of Biomechanics and Tissue Repair; College of Bioengineering & Key Laboratory of Biorheological Science and Technology; Ministry of Education Chongqing University; Chongqing China
- College of Life Sciences; Jiangsu University; Zhenjiang China
| | - Julia Li Zhong
- 111 Project Laboratory of Biomechanics and Tissue Repair; College of Bioengineering & Key Laboratory of Biorheological Science and Technology; Ministry of Education Chongqing University; Chongqing China
| | - Ning Hou
- State Key Laboratory of Proteomics; Genetic Laboratory of Development and Diseases; Institute of Biotechnology; Beijing China
| | - Yaolan Sun
- State Key Laboratory of Proteomics; Genetic Laboratory of Development and Diseases; Institute of Biotechnology; Beijing China
| | - Benting Ma
- State Key Laboratory of Proteomics; Genetic Laboratory of Development and Diseases; Institute of Biotechnology; Beijing China
| | - Muhammad Farrukh Nisar
- 111 Project Laboratory of Biomechanics and Tissue Repair; College of Bioengineering & Key Laboratory of Biorheological Science and Technology; Ministry of Education Chongqing University; Chongqing China
| | - Yan Teng
- State Key Laboratory of Proteomics; Genetic Laboratory of Development and Diseases; Institute of Biotechnology; Beijing China
| | - Zhaoli Tan
- State Key Laboratory of Proteomics; Genetic Laboratory of Development and Diseases; Institute of Biotechnology; Beijing China
| | - Keping Chen
- College of Life Sciences; Jiangsu University; Zhenjiang China
| | - Youliang Wang
- State Key Laboratory of Proteomics; Genetic Laboratory of Development and Diseases; Institute of Biotechnology; Beijing China
| | - Xiao Yang
- State Key Laboratory of Proteomics; Genetic Laboratory of Development and Diseases; Institute of Biotechnology; Beijing China
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Zhang J, Cheng J, Zeng Z, Wang Y, Li X, Xie Q, Jia J, Yan Y, Guo Z, Gao J, Yao M, Chen X, Lu F. Comprehensive profiling of novel microRNA-9 targets and a tumor suppressor role of microRNA-9 via targeting IGF2BP1 in hepatocellular carcinoma. Oncotarget 2016; 6:42040-52. [PMID: 26547929 PMCID: PMC4747208 DOI: 10.18632/oncotarget.5969] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2015] [Accepted: 10/09/2015] [Indexed: 01/01/2023] Open
Abstract
MicroRNA-9 (miR-9) dysregulation is implicated in a variety of human malignancies including hepatocellular carcinoma (HCC), but its role remains contradictory. In this study, we explored the expression and methylation status of miR-9 in HCC samples, as well as the tumor-related functions of miR-9 in vitro. Bioinformatics analysis, array-based RNA expression profile, and literature retrieval were used to identify miR-9 targets in HCC. The potential downstream candidates were then validated by luciferase reporter assay, real-time quantitative PCR, and western blot or enzyme linked immunosorbent assay (ELISA). The expression status and clinicopathologic significances of miR-9 target genes in clinical samples were further explored. The results showed that miR-9 was frequently downregulated in primary HCC. Its silencing was largely contributed by a high frequency (42.5%) of mir-9-1 hypermethylation, which was correlated with bigger tumor size (P = 0.0234). In vitro functional studies revealed that miR-9 restoration retarded HCC cell proliferation and migration. IL-6, AP3B1, TC10, ONECUT2, IGF2BP1, MYO1D, and ANXA2 were confirmed to be miR-9 targets in HCC. Among them, ONECUT2, IGF2BP1, and ANXA2 were confirmed to be aberrantly upregulated in HCC. Moreover, upregulation of ONECUT2, IGF2BP1, and IL-6 were significantly associated with poor post-surgery prognosis (P = 0.0458, P = 0.0037 and P = 0.0461, respectively). Mechanically, miR-9 plays a tumor suppressive role partially through a functional miR-9/IGF2BP1/AKT&ERK axis. Our study suggests that miR-9 functions as a tumor suppressor in HCC progression by inhibiting a series of target genes, including the newly validated miR-9/IGF2BP1/AKT&ERK axis, thus providing potential therapeutic targets and novel prognostic biomarkers for HCC patients.
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Affiliation(s)
- Jiangbo Zhang
- Department of Microbiology & Infectious Disease Center, School of Basic Medical Sciences, Peking University Health Science Center, Beijing 100191, China.,Sun Yat-sen University Cancer Center, State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Guangzhou 510060, China
| | - Jin Cheng
- Department of Microbiology & Infectious Disease Center, School of Basic Medical Sciences, Peking University Health Science Center, Beijing 100191, China.,Institute of Sports Medicine, Beijing Key Laboratory of Sports Injuries, Peking University Third Hospital, Beijing 100191, China
| | - Zhenzhen Zeng
- Department of Microbiology & Infectious Disease Center, School of Basic Medical Sciences, Peking University Health Science Center, Beijing 100191, China
| | - Yongfeng Wang
- Department of Microbiology & Infectious Disease Center, School of Basic Medical Sciences, Peking University Health Science Center, Beijing 100191, China
| | - Xiaojun Li
- Department of Microbiology & Infectious Disease Center, School of Basic Medical Sciences, Peking University Health Science Center, Beijing 100191, China
| | - Qing Xie
- Department of Clinical Laboratory, Beijing Shijitan Hospital, Capital Medical University, Beijing 100038, China
| | - Junqiao Jia
- Department of Microbiology & Infectious Disease Center, School of Basic Medical Sciences, Peking University Health Science Center, Beijing 100191, China
| | - Ying Yan
- Department of Microbiology & Infectious Disease Center, School of Basic Medical Sciences, Peking University Health Science Center, Beijing 100191, China
| | - Zhengyang Guo
- Department of Microbiology & Infectious Disease Center, School of Basic Medical Sciences, Peking University Health Science Center, Beijing 100191, China
| | - Jian Gao
- Department of Microbiology & Infectious Disease Center, School of Basic Medical Sciences, Peking University Health Science Center, Beijing 100191, China
| | - Mingjie Yao
- Department of Microbiology & Infectious Disease Center, School of Basic Medical Sciences, Peking University Health Science Center, Beijing 100191, China
| | - Xiangmei Chen
- Department of Microbiology & Infectious Disease Center, School of Basic Medical Sciences, Peking University Health Science Center, Beijing 100191, China
| | - Fengmin Lu
- Department of Microbiology & Infectious Disease Center, School of Basic Medical Sciences, Peking University Health Science Center, Beijing 100191, China
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Marriott AS, Vasieva O, Fang Y, Copeland NA, McLennan AG, Jones NJ. NUDT2 Disruption Elevates Diadenosine Tetraphosphate (Ap4A) and Down-Regulates Immune Response and Cancer Promotion Genes. PLoS One 2016; 11:e0154674. [PMID: 27144453 PMCID: PMC4856261 DOI: 10.1371/journal.pone.0154674] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2015] [Accepted: 04/18/2016] [Indexed: 01/04/2023] Open
Abstract
Regulation of gene expression is one of several roles proposed for the stress-induced nucleotide diadenosine tetraphosphate (Ap4A). We have examined this directly by a comparative RNA-Seq analysis of KBM-7 chronic myelogenous leukemia cells and KBM-7 cells in which the NUDT2 Ap4A hydrolase gene had been disrupted (NuKO cells), causing a 175-fold increase in intracellular Ap4A. 6,288 differentially expressed genes were identified with P < 0.05. Of these, 980 were up-regulated and 705 down-regulated in NuKO cells with a fold-change ≥ 2. Ingenuity® Pathway Analysis (IPA®) was used to assign these genes to known canonical pathways and functional networks. Pathways associated with interferon responses, pattern recognition receptors and inflammation scored highly in the down-regulated set of genes while functions associated with MHC class II antigens were prominent among the up-regulated genes, which otherwise showed little organization into major functional gene sets. Tryptophan catabolism was also strongly down-regulated as were numerous genes known to be involved in tumor promotion in other systems, with roles in the epithelial-mesenchymal transition, proliferation, invasion and metastasis. Conversely, some pro-apoptotic genes were up-regulated. Major upstream factors predicted by IPA® for gene down-regulation included NFκB, STAT1/2, IRF3/4 and SP1 but no major factors controlling gene up-regulation were identified. Potential mechanisms for gene regulation mediated by Ap4A and/or NUDT2 disruption include binding of Ap4A to the HINT1 co-repressor, autocrine activation of purinoceptors by Ap4A, chromatin remodeling, effects of NUDT2 loss on transcript stability, and inhibition of ATP-dependent regulatory factors such as protein kinases by Ap4A. Existing evidence favors the last of these as the most probable mechanism. Regardless, our results suggest that the NUDT2 protein could be a novel cancer chemotherapeutic target, with its inhibition potentially exerting strong anti-tumor effects via multiple pathways involving metastasis, invasion, immunosuppression and apoptosis.
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MESH Headings
- Cell Line, Tumor
- Dinucleoside Phosphates/metabolism
- Down-Regulation
- Gene Expression Profiling
- Gene Knockout Techniques
- Humans
- Leukemia, Myelogenous, Chronic, BCR-ABL Positive/genetics
- Leukemia, Myelogenous, Chronic, BCR-ABL Positive/immunology
- Leukemia, Myelogenous, Chronic, BCR-ABL Positive/metabolism
- Phosphoric Monoester Hydrolases/deficiency
- Phosphoric Monoester Hydrolases/genetics
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Affiliation(s)
- Andrew S. Marriott
- Department of Biochemistry, Institute of Integrative Biology, University of Liverpool, Liverpool, Merseyside, United Kingdom
| | - Olga Vasieva
- Department of Functional and Comparative Genomics, Institute of Integrative Biology, University of Liverpool, Liverpool, Merseyside, United Kingdom
| | - Yongxiang Fang
- Department of Functional and Comparative Genomics, Institute of Integrative Biology, University of Liverpool, Liverpool, Merseyside, United Kingdom
| | - Nikki A. Copeland
- Division of Biomedical and Life Sciences, University of Lancaster, Lancaster, Lancashire, United Kingdom
| | - Alexander G. McLennan
- Department of Biochemistry, Institute of Integrative Biology, University of Liverpool, Liverpool, Merseyside, United Kingdom
- * E-mail: (AGM); (NJJ)
| | - Nigel J. Jones
- Department of Biochemistry, Institute of Integrative Biology, University of Liverpool, Liverpool, Merseyside, United Kingdom
- * E-mail: (AGM); (NJJ)
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Busch B, Bley N, Müller S, Glaß M, Misiak D, Lederer M, Vetter M, Strauß HG, Thomssen C, Hüttelmaier S. The oncogenic triangle of HMGA2, LIN28B and IGF2BP1 antagonizes tumor-suppressive actions of the let-7 family. Nucleic Acids Res 2016; 44:3845-64. [PMID: 26917013 PMCID: PMC4856984 DOI: 10.1093/nar/gkw099] [Citation(s) in RCA: 84] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2015] [Accepted: 02/11/2016] [Indexed: 12/22/2022] Open
Abstract
The tumor-suppressive let-7 microRNA family targets various oncogene-encoding mRNAs. We identify the let-7 targets HMGA2, LIN28B and IGF2BP1 to form a let-7 antagonizing self-promoting oncogenic triangle. Surprisingly, 3′-end processing of IGF2BP1 mRNAs is unaltered in aggressive cancers and tumor-derived cells although IGF2BP1 synthesis was proposed to escape let-7 attack by APA-dependent (alternative polyadenylation) 3′ UTR shortening. However, the expression of the triangle factors is inversely correlated with let-7 levels and promoted by LIN28B impairing let-7 biogenesis. Moreover, IGF2BP1 enhances the expression of all triangle factors by recruiting the respective mRNAs in mRNPs lacking AGO proteins and let-7 miRNAs. This indicates that the downregulation of let-7, largely facilitated by LIN28B upregulation, and the protection of let-7 target mRNAs by IGF2BP1-directed shielding in mRNPs synergize in enhancing the expression of triangle factors. The oncogenic potential of this triangle was confirmed in ovarian cancer (OC)-derived ES-2 cells transduced with let-7 targeting decoys. In these, the depletion of HMGA2 only diminishes tumor cell growth under permissive conditions. The depletion of LIN28B and more prominently IGF2BP1 severely impairs tumor cell viability, self-renewal and 2D as well as 3D migration. In conclusion, this suggests the targeting of the HMGA2-LIN28B-IGF2BP1 triangle as a promising strategy in cancer treatment.
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Affiliation(s)
- Bianca Busch
- Institute of Molecular Medicine, Section for Molecular Cell Biology, Faculty of Medicine, Martin-Luther-University Halle Wittenberg, ZAMED, Heinrich-Damerow-Str.1, 06120 Halle, Germany
| | - Nadine Bley
- Institute of Molecular Medicine, Section for Molecular Cell Biology, Faculty of Medicine, Martin-Luther-University Halle Wittenberg, ZAMED, Heinrich-Damerow-Str.1, 06120 Halle, Germany
| | - Simon Müller
- Institute of Molecular Medicine, Section for Molecular Cell Biology, Faculty of Medicine, Martin-Luther-University Halle Wittenberg, ZAMED, Heinrich-Damerow-Str.1, 06120 Halle, Germany
| | - Markus Glaß
- Institute of Molecular Medicine, Section for Molecular Cell Biology, Faculty of Medicine, Martin-Luther-University Halle Wittenberg, ZAMED, Heinrich-Damerow-Str.1, 06120 Halle, Germany
| | - Danny Misiak
- Institute of Molecular Medicine, Section for Molecular Cell Biology, Faculty of Medicine, Martin-Luther-University Halle Wittenberg, ZAMED, Heinrich-Damerow-Str.1, 06120 Halle, Germany
| | - Marcell Lederer
- Institute of Molecular Medicine, Section for Molecular Cell Biology, Faculty of Medicine, Martin-Luther-University Halle Wittenberg, ZAMED, Heinrich-Damerow-Str.1, 06120 Halle, Germany
| | - Martina Vetter
- Clinic of Gynecology, Faculty of Medicine, Martin-Luther-University Halle Wittenberg, Ernst-Grube-Straße 40, 06120 Halle, Germany
| | - Hans-Georg Strauß
- Clinic of Gynecology, Faculty of Medicine, Martin-Luther-University Halle Wittenberg, Ernst-Grube-Straße 40, 06120 Halle, Germany
| | - Christoph Thomssen
- Clinic of Gynecology, Faculty of Medicine, Martin-Luther-University Halle Wittenberg, Ernst-Grube-Straße 40, 06120 Halle, Germany
| | - Stefan Hüttelmaier
- Institute of Molecular Medicine, Section for Molecular Cell Biology, Faculty of Medicine, Martin-Luther-University Halle Wittenberg, ZAMED, Heinrich-Damerow-Str.1, 06120 Halle, Germany
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47
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Rebucci M, Sermeus A, Leonard E, Delaive E, Dieu M, Fransolet M, Arnould T, Michiels C. miRNA-196b inhibits cell proliferation and induces apoptosis in HepG2 cells by targeting IGF2BP1. Mol Cancer 2015; 14:79. [PMID: 25889892 PMCID: PMC4403945 DOI: 10.1186/s12943-015-0349-6] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2014] [Accepted: 03/19/2015] [Indexed: 12/19/2022] Open
Abstract
Background Tumor hypoxia is one of the features of tumor microenvironment that contributes to chemoresistance. miRNAs have recently been shown to play important roles in tumorigenesis and drug resistance. Moreover, hypoxia also regulates the expression of a series of miRNAs. However, the interaction between chemoresistance, hypoxia and miRNAs has not been explored yet. The aim of this study is to understand the mechanisms activated/inhibited by miRNAs under hypoxia that induce resistance to chemotherapy-induced apoptosis. Methods TaqMan low-density array was used to identify changes in miRNA expression when cells were exposed to etoposide under hypoxia or normoxia. The effects of miR-196b overexpression on apoptosis and cell proliferation were studied in HepG2 cells. miR-196b target mRNAs were identified by proteomic analysis, luciferase activity assay, RT-qPCR and western blot analysis. Results Results showed that hypoxia down-regulated miR-196b expression that was induced by etoposide. miR-196b overexpression increased the etoposide-induced apoptosis and reversed the protection of cell death observed under hypoxia. By a proteomic approach combined with bioinformatics analyses, we identified IGF2BP1 as a potential target of miR-196b. Indeed, miR-196b overexpression decreased IGF2BP1 RNA expression and protein level. The IGF2BP1 down-regulation by either miR-196b or IGF2BP1 siRNA led to an increase in apoptosis and a decrease in cell viability and proliferation in normal culture conditions. However, IGF2BP1 silencing did not modify the chemoresistance induced by hypoxia, probably because it is not the only target of miR-196b involved in the regulation of apoptosis. Conclusions In conclusion, for the first time, we identified IGF2BP1 as a direct and functional target of miR-196b and showed that miR-196b overexpression reverses the chemoresistance induced by hypoxia. These results emphasize that the chemoresistance induced by hypoxia is a complex mechanism. Electronic supplementary material The online version of this article (doi:10.1186/s12943-015-0349-6) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Magali Rebucci
- Laboratory of Biochemistry and Cellular Biology (URBC), NARILIS, University of Namur, 61 rue de Bruxelles, 5000, Namur, Belgium.
| | - Audrey Sermeus
- Laboratory of Biochemistry and Cellular Biology (URBC), NARILIS, University of Namur, 61 rue de Bruxelles, 5000, Namur, Belgium.
| | - Elodie Leonard
- Laboratory of Biochemistry and Cellular Biology (URBC), NARILIS, University of Namur, 61 rue de Bruxelles, 5000, Namur, Belgium.
| | - Edouard Delaive
- Laboratory of Biochemistry and Cellular Biology (URBC), NARILIS, University of Namur, 61 rue de Bruxelles, 5000, Namur, Belgium.
| | - Marc Dieu
- Laboratory of Biochemistry and Cellular Biology (URBC), NARILIS, University of Namur, 61 rue de Bruxelles, 5000, Namur, Belgium.
| | - Maude Fransolet
- Laboratory of Biochemistry and Cellular Biology (URBC), NARILIS, University of Namur, 61 rue de Bruxelles, 5000, Namur, Belgium.
| | - Thierry Arnould
- Laboratory of Biochemistry and Cellular Biology (URBC), NARILIS, University of Namur, 61 rue de Bruxelles, 5000, Namur, Belgium.
| | - Carine Michiels
- Laboratory of Biochemistry and Cellular Biology (URBC), NARILIS, University of Namur, 61 rue de Bruxelles, 5000, Namur, Belgium.
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48
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Bell JL, Turlapati R, Liu T, Schulte JH, Hüttelmaier S. IGF2BP1 harbors prognostic significance by gene gain and diverse expression in neuroblastoma. J Clin Oncol 2015; 33:1285-93. [PMID: 25753434 DOI: 10.1200/jco.2014.55.9880] [Citation(s) in RCA: 48] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023] Open
Abstract
PURPOSE Chromosomal 17q21-ter gain in neuroblastoma is both a common and prognostically significant event. The insulin-like growth factor-2 mRNA-binding protein 1 (IGF2BP1) gene is located near the proximal edge of this region. Here, its prognostic value is evaluated in neuroblastoma. METHODS The mRNA expression of IGF2BP family members was first evaluated by microarray data sets. In addition, in a separate cohort of 69 tumors, IGF2BP1 gene copy number, mRNA, and protein abundance were determined and compared with clinical parameters. RESULTS In two independent microarray data sets, 77% to 100% of tumors had substantial IGF2BP1 mRNA levels measured. High IGF2BP1 transcript abundance was significantly associated with stage 4 tumors (P < .001) and decreased patient survival (P < .001). IGF2BP1 was also associated with MYCN gene amplification and MYCN mRNA abundance. In the 69 neuroblastoma samples, IGF2BP1 DNA copy number (increased in 84% of tumors), mRNA, and protein abundance were significantly higher in stage 4 compared with stage 1 tumors. Importantly, IGF2BP1 protein levels were associated with lower overall patient survival (P = .012) and positively correlated with MYCN mRNA, even when excluding MYCN-amplified tumors. Moreover, IGF2BP1 clearly affected MYCN expression and neuroblastoma cell survival in vitro. CONCLUSION In neuroblastoma, IGF2BP1 was expressed in the majority of neuroblastoma specimens analyzed and was associated with lower overall patient survival and MYCN abundance. These data demonstrate that IGF2BP1 is a potential oncogene and an independent negative prognostic factor in neuroblastoma.
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Affiliation(s)
- Jessica L Bell
- Jessica L. Bell, Raseswari Turlapati, and Stefan Hüttelmaier, Martin Luther University Halle-Wittenberg, Halle; Johannes H. Schulte, West German Cancer Center, University Hospital Essen, University Duisburg-Essen, and University Children's Hospital Essen, Essen; Johannes H. Schulte, German Cancer Consortium and German Cancer Research Center, Heidelberg, Germany; and Tao Liu, Children's Cancer Institute Australia for Medical Research and University of New South Wales, Randwick, New South Wales, Australia
| | - Raseswari Turlapati
- Jessica L. Bell, Raseswari Turlapati, and Stefan Hüttelmaier, Martin Luther University Halle-Wittenberg, Halle; Johannes H. Schulte, West German Cancer Center, University Hospital Essen, University Duisburg-Essen, and University Children's Hospital Essen, Essen; Johannes H. Schulte, German Cancer Consortium and German Cancer Research Center, Heidelberg, Germany; and Tao Liu, Children's Cancer Institute Australia for Medical Research and University of New South Wales, Randwick, New South Wales, Australia
| | - Tao Liu
- Jessica L. Bell, Raseswari Turlapati, and Stefan Hüttelmaier, Martin Luther University Halle-Wittenberg, Halle; Johannes H. Schulte, West German Cancer Center, University Hospital Essen, University Duisburg-Essen, and University Children's Hospital Essen, Essen; Johannes H. Schulte, German Cancer Consortium and German Cancer Research Center, Heidelberg, Germany; and Tao Liu, Children's Cancer Institute Australia for Medical Research and University of New South Wales, Randwick, New South Wales, Australia
| | - Johannes H Schulte
- Jessica L. Bell, Raseswari Turlapati, and Stefan Hüttelmaier, Martin Luther University Halle-Wittenberg, Halle; Johannes H. Schulte, West German Cancer Center, University Hospital Essen, University Duisburg-Essen, and University Children's Hospital Essen, Essen; Johannes H. Schulte, German Cancer Consortium and German Cancer Research Center, Heidelberg, Germany; and Tao Liu, Children's Cancer Institute Australia for Medical Research and University of New South Wales, Randwick, New South Wales, Australia
| | - Stefan Hüttelmaier
- Jessica L. Bell, Raseswari Turlapati, and Stefan Hüttelmaier, Martin Luther University Halle-Wittenberg, Halle; Johannes H. Schulte, West German Cancer Center, University Hospital Essen, University Duisburg-Essen, and University Children's Hospital Essen, Essen; Johannes H. Schulte, German Cancer Consortium and German Cancer Research Center, Heidelberg, Germany; and Tao Liu, Children's Cancer Institute Australia for Medical Research and University of New South Wales, Randwick, New South Wales, Australia.
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Liang J, Li Y, Daniels G, Sfanos K, De Marzo A, Wei J, Li X, Chen W, Wang J, Zhong X, Melamed J, Zhao J, Lee P. LEF1 Targeting EMT in Prostate Cancer Invasion Is Regulated by miR-34a. Mol Cancer Res 2015; 13:681-8. [PMID: 25587085 DOI: 10.1158/1541-7786.mcr-14-0503] [Citation(s) in RCA: 71] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2014] [Accepted: 12/30/2014] [Indexed: 12/16/2022]
Abstract
UNLABELLED The microRNA-34a (miR-34a), a tumor-suppressive microRNA (miRNA), is implicated in epithelial-mesenchymal transition (EMT) and cancer stem cells. Lymphoid enhancer-binding factor-1 (LEF1) is a key transcription factor in the Wnt signaling pathway, and has been suggested to be involved in regulation of cell proliferation and invasion. Here, the molecular mechanism of miR-34a and LEF1 in cooperatively regulating prostate cancer cell invasion is described. Molecular profiling analysis of miRNA levels in prostate cancer cells revealed a negative correlation between miR-34a and LEF1 expression, and the downregulation of LEF1 by miR-34a was confirmed by luciferase assays. Furthermore, miR-34a specifically repressed LEF1 expression through direct binding to its 3'-untranslated regions (3'-UTR). miR-34a modulated the levels of LEF1 to regulate EMT in prostate cancer cells. Functionally, miR-34a negatively correlated with the migration and invasion of prostate cancer cells through LEF1. An analysis of miR-34a expression levels in matched human tumor and benign tissues demonstrated consistent and statistically significant downregulation of miR-34a in primary prostate cancer specimens. These data strongly suggest that miR-34a/LEF1 regulation of EMT plays an important role in prostate cancer migration and invasion. IMPLICATIONS The miR-34a-LEF1 axis represents a potential molecular target for novel therapeutic strategies in prostate cancer.
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Affiliation(s)
- Jiaqian Liang
- Department of Pathology, New York University School of Medicine, New York, New York. Department of Urology, Wuhan No. 1 Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Yirong Li
- Department of Pathology, New York University School of Medicine, New York, New York
| | - Garrett Daniels
- Department of Pathology, New York University School of Medicine, New York, New York
| | - Karen Sfanos
- Department of Pathology, Johns Hopkins University, Baltimore, Maryland
| | - Angelo De Marzo
- Department of Pathology, Johns Hopkins University, Baltimore, Maryland
| | - Jianjun Wei
- Department of Pathology, Northwestern University, Chicago, Illinois
| | - Xin Li
- NYU Cancer Institute, New York University School of Medicine, New York, New York. Department of Urology, New York University School of Medicine, New York, New York. Basic Science and Craniofacial Biology, New York University College of Dentistry, New York, New York
| | - Wenqiang Chen
- Pediatric Lab of Medical Science Experiment Center, Guangxi Medical University, Nanning, Guangxi, China
| | - Jinhua Wang
- NYU Cancer Institute, New York University School of Medicine, New York, New York
| | - Xuelin Zhong
- Department of Pathology, New York University School of Medicine, New York, New York
| | - Jonathan Melamed
- Department of Pathology, New York University School of Medicine, New York, New York
| | - Jun Zhao
- Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.
| | - Peng Lee
- Department of Pathology, New York University School of Medicine, New York, New York. NYU Cancer Institute, New York University School of Medicine, New York, New York. Department of Urology, New York University School of Medicine, New York, New York. New York Harbor Healthcare System, New York University School of Medicine, New York, New York.
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50
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Bley N, Lederer M, Pfalz B, Reinke C, Fuchs T, Glaß M, Möller B, Hüttelmaier S. Stress granules are dispensable for mRNA stabilization during cellular stress. Nucleic Acids Res 2014; 43:e26. [PMID: 25488811 PMCID: PMC4344486 DOI: 10.1093/nar/gku1275] [Citation(s) in RCA: 89] [Impact Index Per Article: 8.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022] Open
Abstract
During cellular stress, protein synthesis is severely reduced and bulk mRNA is recruited to stress granules (SGs). Previously, we showed that the SG-recruited IGF2 mRNA-binding protein 1 (IGF2BP1) interferes with target mRNA degradation during cellular stress. Whether this requires the formation of SGs remained elusive. Here, we demonstrate that the sustained inhibition of visible SGs requires the concomitant knockdown of TIA1, TIAR and G3BP1. FRAP and photo-conversion studies, however, indicate that these proteins only transiently associate with SGs. This suggests that instead of forming a rigid scaffold for mRNP recruitment, TIA proteins and G3BP1 promote SG-formation by constantly replenishing mRNPs. In contrast, RNA-binding proteins like IGF2BP1 or HUR, which are dispensable for SG-assembly, are stably associated with SGs and the IGF2BP1/HUR-G3BP1 association is increased during stress. The depletion of IGF2BP1 enhances the degradation of target mRNAs irrespective of inhibiting SG-formation, whereas the turnover of bulk mRNA remains unaffected when SG-formation is impaired. Together these findings indicate that the stabilization of mRNAs during cellular stress is facilitated by the formation of stable mRNPs, which are recruited to SGs by TIA proteins and/or G3BP1. Importantly, however, the aggregation of mRNPs to visible SGs is dispensable for preventing mRNA degradation.
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Affiliation(s)
- Nadine Bley
- Division of Molecular Cell Biology, Institute of Molecular Medicine, Martin Luther University Halle-Wittenberg, Heinrich-Damerow-Strasse 1, 06120 Halle, Germany Core Facility Imaging (CFI) of the Medical Faculty, Institute of Molecular Medicine, Martin Luther University Halle-Wittenberg, Heinrich-Damerow-Strasse 1, 06120 Halle, Germany
| | - Marcell Lederer
- Division of Molecular Cell Biology, Institute of Molecular Medicine, Martin Luther University Halle-Wittenberg, Heinrich-Damerow-Strasse 1, 06120 Halle, Germany
| | - Birgit Pfalz
- Genome Biology Unit, European Molecular Biology Laboratory, Meyerhofstrasse 1, 69117 Heidelberg, Germany
| | - Claudia Reinke
- Division of Molecular Cell Biology, Institute of Molecular Medicine, Martin Luther University Halle-Wittenberg, Heinrich-Damerow-Strasse 1, 06120 Halle, Germany Core Facility Imaging (CFI) of the Medical Faculty, Institute of Molecular Medicine, Martin Luther University Halle-Wittenberg, Heinrich-Damerow-Strasse 1, 06120 Halle, Germany
| | - Tommy Fuchs
- Division of Molecular Cell Biology, Institute of Molecular Medicine, Martin Luther University Halle-Wittenberg, Heinrich-Damerow-Strasse 1, 06120 Halle, Germany
| | - Markus Glaß
- Division of Molecular Cell Biology, Institute of Molecular Medicine, Martin Luther University Halle-Wittenberg, Heinrich-Damerow-Strasse 1, 06120 Halle, Germany Core Facility Imaging (CFI) of the Medical Faculty, Institute of Molecular Medicine, Martin Luther University Halle-Wittenberg, Heinrich-Damerow-Strasse 1, 06120 Halle, Germany
| | - Birgit Möller
- Institute of Computer Science, Martin Luther University Halle-Wittenberg, Von-Seckendorff-Platz 1, 06099 Halle, Germany
| | - Stefan Hüttelmaier
- Division of Molecular Cell Biology, Institute of Molecular Medicine, Martin Luther University Halle-Wittenberg, Heinrich-Damerow-Strasse 1, 06120 Halle, Germany Core Facility Imaging (CFI) of the Medical Faculty, Institute of Molecular Medicine, Martin Luther University Halle-Wittenberg, Heinrich-Damerow-Strasse 1, 06120 Halle, Germany
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