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Camacho-Concha N, Santana-Román ME, Sánchez NC, Velasco I, Pando-Robles V, Pedraza-Alva G, Pérez-Martínez L. Insights into Zika Virus Pathogenesis and Potential Therapeutic Strategies. Biomedicines 2023; 11:3316. [PMID: 38137537 PMCID: PMC10741857 DOI: 10.3390/biomedicines11123316] [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: 10/01/2023] [Revised: 11/10/2023] [Accepted: 11/11/2023] [Indexed: 12/24/2023] Open
Abstract
Zika virus (ZIKV) has emerged as a significant public health threat, reaching pandemic levels in 2016. Human infection with ZIKV can manifest as either asymptomatic or as an acute illness characterized by symptoms such as fever and headache. Moreover, it has been associated with severe neurological complications in adults, including Guillain-Barre syndrome, and devastating fetal abnormalities, like microcephaly. The primary mode of transmission is through Aedes spp. mosquitoes, and with half of the world's population residing in regions where Aedes aegypti, the principal vector, thrives, the reemergence of ZIKV remains a concern. This comprehensive review provides insights into the pathogenesis of ZIKV and highlights the key cellular pathways activated upon ZIKV infection. Additionally, we explore the potential of utilizing microRNAs (miRNAs) and phytocompounds as promising strategies to combat ZIKV infection.
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Affiliation(s)
- Nohemi Camacho-Concha
- Laboratorio de Neuroinmunobiología, Departamento de Medicina Molecular y Bioprocesos, Instituto de Biotecnología, Universidad Nacional Autónoma de México, Cuernavaca 62210, Morelos, Mexico; (N.C.-C.); (M.E.S.-R.); (N.C.S.); (G.P.-A.)
| | - María E. Santana-Román
- Laboratorio de Neuroinmunobiología, Departamento de Medicina Molecular y Bioprocesos, Instituto de Biotecnología, Universidad Nacional Autónoma de México, Cuernavaca 62210, Morelos, Mexico; (N.C.-C.); (M.E.S.-R.); (N.C.S.); (G.P.-A.)
| | - Nilda C. Sánchez
- Laboratorio de Neuroinmunobiología, Departamento de Medicina Molecular y Bioprocesos, Instituto de Biotecnología, Universidad Nacional Autónoma de México, Cuernavaca 62210, Morelos, Mexico; (N.C.-C.); (M.E.S.-R.); (N.C.S.); (G.P.-A.)
| | - Iván Velasco
- Instituto de Fisiología Celular-Neurociencias, Universidad Nacional Autónoma de México, Ciudad de México 04510, Mexico;
- Laboratorio de Reprogramación Celular, Instituto Nacional de Neurología y Neurocirugía “Manuel Velasco Suárez”, Ciudad de México 14269, Mexico
| | - Victoria Pando-Robles
- Centro de Investigación Sobre Enfermedades Infecciosas, Instituto Nacional de Salud Pública, Cuernavaca 62100, Morelos, Mexico;
| | - Gustavo Pedraza-Alva
- Laboratorio de Neuroinmunobiología, Departamento de Medicina Molecular y Bioprocesos, Instituto de Biotecnología, Universidad Nacional Autónoma de México, Cuernavaca 62210, Morelos, Mexico; (N.C.-C.); (M.E.S.-R.); (N.C.S.); (G.P.-A.)
| | - Leonor Pérez-Martínez
- Laboratorio de Neuroinmunobiología, Departamento de Medicina Molecular y Bioprocesos, Instituto de Biotecnología, Universidad Nacional Autónoma de México, Cuernavaca 62210, Morelos, Mexico; (N.C.-C.); (M.E.S.-R.); (N.C.S.); (G.P.-A.)
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Sicking M, Falke I, Löblein MT, Eich HT, Götte M, Greve B, Troschel FM. The Musashi RNA-binding proteins in female cancers: insights on molecular mechanisms and therapeutic relevance. Biomark Res 2023; 11:76. [PMID: 37620963 PMCID: PMC10463710 DOI: 10.1186/s40364-023-00516-2] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2023] [Accepted: 08/16/2023] [Indexed: 08/26/2023] Open
Abstract
RNA-binding proteins have increasingly been identified as important regulators of gene expression given their ability to bind distinct RNA sequences and regulate their fate. Mounting evidence suggests that RNA-binding proteins are involved in the onset and progression of multiple malignancies, prompting increasing interest in their potential for therapeutic intervention.The Musashi RNA binding proteins Musashi-1 and Musashi-2 were initially identified as developmental factors of the nervous system but have more recently been found to be ubiquitously expressed in physiological tissues and may be involved in pathological cell behavior. Both proteins are increasingly investigated in cancers given dysregulation in multiple tumor entities, including in female malignancies. Recent data suggest that the Musashi proteins serve as cancer stem cell markers as they contribute to cancer cell proliferation and therapy resistance, prompting efforts to identify mechanisms to target them. However, as the picture remains incomplete, continuous efforts to elucidate their role in different signaling pathways remain ongoing.In this review, we focus on the roles of Musashi proteins in tumors of the female - breast, endometrial, ovarian and cervical cancer - as we aim to summarize current knowledge and discuss future perspectives.
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Affiliation(s)
- Mark Sicking
- Department of Radiation Oncology, University Hospital Münster, Albert Schweitzer-Campus 1, 48149, Münster, Germany
| | - Isabel Falke
- Department of Radiation Oncology, University Hospital Münster, Albert Schweitzer-Campus 1, 48149, Münster, Germany
| | - Maria T Löblein
- Department of Radiation Oncology, University Hospital Münster, Albert Schweitzer-Campus 1, 48149, Münster, Germany
| | - Hans Th Eich
- Department of Radiation Oncology, University Hospital Münster, Albert Schweitzer-Campus 1, 48149, Münster, Germany
| | - Martin Götte
- Department of Gynecology and Obstetrics, University Hospital Münster, Albert-Schweitzer-Campus 1, 48149, Münster, Germany
| | - Burkhard Greve
- Department of Radiation Oncology, University Hospital Münster, Albert Schweitzer-Campus 1, 48149, Münster, Germany
| | - Fabian M Troschel
- Department of Radiation Oncology, University Hospital Münster, Albert Schweitzer-Campus 1, 48149, Münster, Germany.
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Chen Y, Qin H, Zheng L. Research progress on RNA−binding proteins in breast cancer. Front Oncol 2022; 12:974523. [PMID: 36059653 PMCID: PMC9433872 DOI: 10.3389/fonc.2022.974523] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2022] [Accepted: 07/27/2022] [Indexed: 11/16/2022] Open
Abstract
Breast cancer is the most common malignancy in women and has a high incidence rate and mortality. Abnormal regulation of gene expression plays an important role in breast cancer occurrence and development. RNA-binding proteins (RBPs) are one kind of the key regulators for gene expression. By interacting with RNA, RBPs are widely involved in RNA cutting, transport, editing, intracellular localization, and translation regulation. RBPs are important during breast cancer occurrence and progression by engaging in many aspects, like proliferation, migration, invasion, and stemness. Therefore, comprehensively understanding the role of RBPs in breast cancer progression can facilitate early diagnosis, timely treatment, and long-term survival and quality of life of breast cancer patients.
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Affiliation(s)
- Ying Chen
- School of Life Science and Technology, Jiangsu Key Laboratory of Carcinogenesis and Intervention, China Pharmaceutical University, Nanjing, China
| | - Hai Qin
- Department of Clinical Laboratory, Guizhou Provincial Orthopedic Hospital, Guiyang, China
- *Correspondence: Lufeng Zheng, ; Hai Qin,
| | - Lufeng Zheng
- School of Life Science and Technology, Jiangsu Key Laboratory of Carcinogenesis and Intervention, China Pharmaceutical University, Nanjing, China
- *Correspondence: Lufeng Zheng, ; Hai Qin,
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Shi H, Xiang T, Feng J, Yang X, Li Y, Fang Y, Xu L, Qi Q, Shen J, Tang L, Shen Q, Wang X, Xu H, Rao J. N6-Methyladenosine Methylomic Landscape of Ureteral Deficiency in Reflux Uropathy and Obstructive Uropathy. Front Med (Lausanne) 2022; 9:924579. [PMID: 35795641 PMCID: PMC9251069 DOI: 10.3389/fmed.2022.924579] [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: 04/20/2022] [Accepted: 05/23/2022] [Indexed: 11/13/2022] Open
Abstract
Background Congenital anomalies of the kidneys and urinary tracts (CAKUT) represent the most prevalent cause for renal failure in children. The RNA epigenetic modification N6-methyladenosine (m6A) methylation modulates gene expression and function post-transcriptionally, which has recently been revealed to be critical in organ development. However, it is uncertain whether m6A methylation plays a role in the pathogenesis of CAKUT. Thus, we aimed to explore the pattern of m6A methylation in CAKUT. Methods Using m6A-mRNA epitranscriptomic microarray, we investigated the m6A methylomic landscape in the ureter tissue of children with obstructive megaureter (M group) and primary vesicoureteral reflux (V group). Results A total of 228 mRNAs engaged in multiple function-relevant signaling pathways were substantially differential methylated between the “V” and “M” groups. Additionally, 215 RNA-binding proteins that recognize differentially methylated regions were predicted based on public databases. The M group showed significantly higher mRNA levels of m6A readers/writers (YTHDF1, YTHDF2, YTHDC1, YTHDC2 and WTAP) and significantly lower mRNA levels of m6A eraser (FTO) according to real-time PCR. To further investigate the differentially methylated genes, m6A methylome and transcriptome data were integrated to identified 298 hypermethylated mRNAs with differential expressions (265 upregulation and 33 downregulation) and 489 hypomethylated mRNAs with differential expressions (431 upregulation and 58 downregulation) in the M/V comparison. Conclusion The current results highlight the pathogenesis of m6A methylation in obstructive and reflux uropathy.
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Affiliation(s)
- Hua Shi
- Department of Nephrology, Children's Hospital of Fudan University, Shanghai, China
- Shanghai Kidney Development and Pediatric Kidney Disease Research Center, Shanghai, China
- Shanghai Key Lab of Birth Defect, Children's Hospital of Fudan University, Shanghai, China
| | - Tianchao Xiang
- Department of Nephrology, Children's Hospital of Fudan University, Shanghai, China
- Shanghai Kidney Development and Pediatric Kidney Disease Research Center, Shanghai, China
- Shanghai Key Lab of Birth Defect, Children's Hospital of Fudan University, Shanghai, China
| | - Jiayan Feng
- Department of Pathology, Children's Hospital of Fudan University, Shanghai, China
| | - Xue Yang
- Department of Nephrology, Children's Hospital of Fudan University, Shanghai, China
- Shanghai Kidney Development and Pediatric Kidney Disease Research Center, Shanghai, China
- Shanghai Key Lab of Birth Defect, Children's Hospital of Fudan University, Shanghai, China
| | - Yaqi Li
- Department of Nephrology, Children's Hospital of Fudan University, Shanghai, China
- Shanghai Kidney Development and Pediatric Kidney Disease Research Center, Shanghai, China
- Shanghai Key Lab of Birth Defect, Children's Hospital of Fudan University, Shanghai, China
| | - Ye Fang
- Department of Nephrology, Children's Hospital of Fudan University, Shanghai, China
- Shanghai Kidney Development and Pediatric Kidney Disease Research Center, Shanghai, China
- Shanghai Key Lab of Birth Defect, Children's Hospital of Fudan University, Shanghai, China
| | - Linan Xu
- Department of Nephrology, Children's Hospital of Fudan University, Shanghai, China
- Shanghai Kidney Development and Pediatric Kidney Disease Research Center, Shanghai, China
- Shanghai Key Lab of Birth Defect, Children's Hospital of Fudan University, Shanghai, China
| | - Qi Qi
- Department of Nephrology, Children's Hospital of Fudan University, Shanghai, China
- Shanghai Kidney Development and Pediatric Kidney Disease Research Center, Shanghai, China
- Shanghai Key Lab of Birth Defect, Children's Hospital of Fudan University, Shanghai, China
| | - Jian Shen
- Department of Urology, Children's Hospital of Fudan University, Shanghai, China
| | - Liangfeng Tang
- Department of Urology, Children's Hospital of Fudan University, Shanghai, China
| | - Qian Shen
- Department of Nephrology, Children's Hospital of Fudan University, Shanghai, China
- Shanghai Kidney Development and Pediatric Kidney Disease Research Center, Shanghai, China
- Shanghai Key Lab of Birth Defect, Children's Hospital of Fudan University, Shanghai, China
| | - Xiang Wang
- Department of Urology, Children's Hospital of Fudan University, Shanghai, China
- *Correspondence: Xiang Wang
| | - Hong Xu
- Department of Nephrology, Children's Hospital of Fudan University, Shanghai, China
- Shanghai Kidney Development and Pediatric Kidney Disease Research Center, Shanghai, China
- Shanghai Key Lab of Birth Defect, Children's Hospital of Fudan University, Shanghai, China
- Hong Xu
| | - Jia Rao
- Department of Nephrology, Children's Hospital of Fudan University, Shanghai, China
- Shanghai Key Lab of Birth Defect, Children's Hospital of Fudan University, Shanghai, China
- State Key Laboratory of Medical Neurobiology, Institutes of Brain Science and School of Basic Medical Science, Fudan University, Shanghai, China
- Jia Rao
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Zhang Y, Li T, Pan M, Wang W, Huang W, Yuan Y, Xie Z, Chen Y, Peng J, Li X, Meng Y. SIRT1 prevents cigarette smoking-induced lung fibroblasts activation by regulating mitochondrial oxidative stress and lipid metabolism. J Transl Med 2022; 20:222. [PMID: 35568871 PMCID: PMC9107262 DOI: 10.1186/s12967-022-03408-5] [Citation(s) in RCA: 29] [Impact Index Per Article: 14.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2022] [Accepted: 04/24/2022] [Indexed: 12/06/2022] Open
Abstract
BACKGROUND Cigarette smoking (CS) is a strong risk factor for idiopathic pulmonary fibrosis (IPF). It can activate lung fibroblasts (LF) by inducing redox imbalance. We previously showed that clearing mitochondrial reactive oxygen species (mtROS) protects against CS-induced pulmonary fibrosis. However, the precise mechanisms of mtROS in LF need further investigation. Here we focused on mtROS to elucidate how it was regulated by CS in LF and how it contributed to LF activation. METHODS We treated cells with 1% cigarette smoking extract (CSE) and examined mtROS level by MitoSOX™ indicator. And the effect of CSE on expression of SIRT1, SOD2, mitochondrial NOX4 (mtNOX4), fatty acid oxidation (FAO)-related protein PPARα and CPT1a and LF activation marker Collagen I and α-SMA were detected. Nile Red staining was performed to show cellular lipid content. Then, lipid droplets, autophagosome and lysosome were marked by Bodipy 493/503, LC3 and LAMP1, respectively. And lipophagy was evaluated by the colocalization of lipid droplets with LC3 and LAMP1. The role of autophagy on lipid metabolism and LF activation were explored. Additionally, the effect of mitochondria-targeted ROS scavenger mitoquinone and SIRT1 activator SRT1720 on mitochondrial oxidative stress, autophagy flux, lipid metabolism and LF activation were investigated in vitro and in vivo. RESULTS We found that CS promoted mtROS production by increasing mtNOX4 and decreasing SOD2. Next, we proved mtROS inhibited the expression of PPARα and CPT1a. It also reduced lipophagy and upregulated cellular lipid content, suggesting lipid metabolism was disturbed by CS. In addition, we showed both insufficient FAO and lipophagy resulted from blocked autophagy flux caused by mtROS. Moreover, we uncovered decreased SIRT1 was responsible for mitochondrial redox imbalance. Furthermore, we proved that both SRT1720 and mitoquinone counteracted the effect of CS on NOX4, SOD2, PPARα and CPT1a in vivo. CONCLUSIONS We demonstrated that CS decreased SIRT1 to activate LF through dysregulating lipid metabolism, which was due to increased mtROS and impaired autophagy flux. These events may serve as therapeutic targets for IPF patients.
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Affiliation(s)
- Yue Zhang
- Department of Respiratory and Critical Care Medicine, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong, China
| | - Ting Li
- Department of Respiratory and Critical Care Medicine, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong, China
| | - Miaoxia Pan
- Department of Respiratory and Critical Care Medicine, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong, China
| | - Wei Wang
- Department of Respiratory and Critical Care Medicine, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong, China
| | - Wenhui Huang
- Department of Respiratory and Critical Care Medicine, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong, China
| | - Yafei Yuan
- Department of Respiratory and Critical Care Medicine, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong, China
| | - Zhanzhan Xie
- Department of Respiratory and Critical Care Medicine, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong, China
| | - Yixin Chen
- Department of Respiratory and Critical Care Medicine, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong, China
| | - Jun Peng
- Department of Respiratory and Critical Care Medicine, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong, China
| | - Xu Li
- Department of Emergency Medicine, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong, China.
- Ministry of Education, Key Laboratory of Hainan Trauma and Disaster Rescue, College of Emergency and Trauma, Hainan Medical University, Haikou, China.
| | - Ying Meng
- Department of Respiratory and Critical Care Medicine, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong, China.
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Abstract
RNA-binding proteins (RBPs) are of fundamental importance for post-transcriptional gene regulation and protein synthesis. They are required for pre-mRNA processing and for RNA transport, degradation and translation into protein, and can regulate every step in the life cycle of their RNA targets. In addition, RBP function can be modulated by RNA binding. RBPs also participate in the formation of ribonucleoprotein complexes that build up macromolecular machineries such as the ribosome and spliceosome. Although most research has focused on mRNA-binding proteins, non-coding RNAs are also regulated and sequestered by RBPs. Functional defects and changes in the expression levels of RBPs have been implicated in numerous diseases, including neurological disorders, muscular atrophy and cancers. RBPs also contribute to a wide spectrum of kidney disorders. For example, human antigen R has been reported to have a renoprotective function in acute kidney injury (AKI) but might also contribute to the development of glomerulosclerosis, tubulointerstitial fibrosis and diabetic kidney disease (DKD), loss of bicaudal C is associated with cystic kidney diseases and Y-box binding protein 1 has been implicated in the pathogenesis of AKI, DKD and glomerular disorders. Increasing data suggest that the modulation of RBPs and their interactions with RNA targets could be promising therapeutic strategies for kidney diseases.
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Troschel FM, Palenta H, Borrmann K, Heshe K, Hua SH, Yip GW, Kiesel L, Eich HT, Götte M, Greve B. Knockdown of the prognostic cancer stem cell marker Musashi-1 decreases radio-resistance while enhancing apoptosis in hormone receptor-positive breast cancer cells via p21 WAF1/CIP1. J Cancer Res Clin Oncol 2021; 147:3299-3312. [PMID: 34291358 PMCID: PMC8484224 DOI: 10.1007/s00432-021-03743-y] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2021] [Accepted: 07/13/2021] [Indexed: 02/02/2023]
Abstract
Purpose While the stem cell marker Musashi-1 (MSI-1) has been identified as a key player in a wide array of malignancies, few findings exist on its prognostic relevance and relevance for cancer cell death and therapy resistance in breast cancer. Methods First, we determined prognostic relevance of MSI-1 in database analyses regarding multiple survival outcomes. To substantiate findings, MSI-1 was artificially downregulated in MCF-7 breast cancer cells and implications for cancer stem cell markers, cell apoptosis and apoptosis regulator p21, proliferation and radiation response were analyzed via flow cytometry and colony formation. Radiation-induced p21 expression changes were investigated using a dataset containing patient samples obtained before and after irradiation and own in vitro experiments. Results MSI-1 is a negative prognostic marker for disease-free and distant metastasis-free survival in breast cancer and tends to negatively influence overall survival. MSI-1 knockdown downregulated stem cell gene expression and proliferation, but increased p21 levels and apoptosis. Similar to the MSI-1 knockdown effect, p21 expression was strongly increased after irradiation and was expressed at even higher levels in MSI-1 knockdown cells after irradiation. Finally, combined use of MSI-1 silencing and irradiation reduced cancer cell survival. Conclusion MSI-1 is a prognostic marker in breast cancer. MSI-1 silencing downregulates proliferation while increasing apoptosis. The anti-proliferation mediator p21 was upregulated independently after both MSI-1 knockdown and irradiation and even more after both treatments combined, suggesting synergistic potential. Radio-sensitization effects after combining radiation and MSI-1 knockdown underline the potential of MSI-1 as a therapeutic target. Supplementary Information The online version contains supplementary material available at 10.1007/s00432-021-03743-y.
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Affiliation(s)
- Fabian M Troschel
- Department of Radiation Oncology, University Hospital Münster, 48149, Münster, Germany.
| | - Heike Palenta
- Department of Gynecology and Obstetrics, University Hospital Münster, 48149, Münster, Germany
| | - Katrin Borrmann
- Department of Radiation Oncology, University Hospital Münster, 48149, Münster, Germany
| | - Kristin Heshe
- Department of Radiation Oncology, University Hospital Münster, 48149, Münster, Germany
| | - San Hue Hua
- Department of Anatomy, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, 117594, Singapore
| | - George W Yip
- Department of Anatomy, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, 117594, Singapore
| | - Ludwig Kiesel
- Department of Gynecology and Obstetrics, University Hospital Münster, 48149, Münster, Germany
| | - Hans Theodor Eich
- Department of Radiation Oncology, University Hospital Münster, 48149, Münster, Germany
| | - Martin Götte
- Department of Gynecology and Obstetrics, University Hospital Münster, 48149, Münster, Germany
| | - Burkhard Greve
- Department of Radiation Oncology, University Hospital Münster, 48149, Münster, Germany
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Zheng B, Yuan M, Wang S, Tan Y, Xu Y, Ye J, Gao Y, Sun X, Wang T, Kong L, Wu X, Xu Q. Fraxinellone alleviates kidney fibrosis by inhibiting CUG-binding protein 1-mediated fibroblast activation. Toxicol Appl Pharmacol 2021; 420:115530. [PMID: 33845055 DOI: 10.1016/j.taap.2021.115530] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2020] [Revised: 03/18/2021] [Accepted: 04/05/2021] [Indexed: 12/11/2022]
Abstract
Chronic Kidney Disease (CKD) is a serious threat to human health. In addition, kidney fibrosis is a key pathogenic intermediate for the progression of CDK. Moreover, excessive activation of fibroblasts is key to the development of kidney fibrosis and this process is difficult to control. Notably, fraxinellone is a natural compound isolated from Dictamnus dasycarpus and has a variety of pharmacological activities, including hepatoprotective, anti-inflammatory and anti-cancer effects. However, the effect of fraxinellone on kidney fibrosis is largely unknown. The present study showed that fraxinellone could alleviate folic acid-induced kidney fibrosis in mice in a dose dependent manner. Additionally, the results revealed that fraxinellone could effectively down-regulate the expression of CUGBP1, which was highly up-regulated in human and murine fibrotic renal tissues. Furthermore, expression of CUGBP1 was selectively induced by the Transforming Growth Factor-beta (TGF-β) through p38 and JNK signaling in kidney fibroblasts. On the other hand, downregulating the expression of CUGBP1 significantly inhibited the activation of kidney fibroblasts. In conclusion, these findings demonstrated that fraxinellone might be a new drug candidate and CUGBP1 could be a promising target for the treatment of kidney fibrosis.
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Affiliation(s)
- Bingfeng Zheng
- State Key Laboratory of Pharmaceutical Biotechnology, School of Life Sciences, Nanjing University, Nanjing 210023, China
| | - Manman Yuan
- State Key Laboratory of Pharmaceutical Biotechnology, School of Life Sciences, Nanjing University, Nanjing 210023, China
| | - Shenglan Wang
- State Key Laboratory of Pharmaceutical Biotechnology, School of Life Sciences, Nanjing University, Nanjing 210023, China
| | - Yang Tan
- State Key Laboratory of Pharmaceutical Biotechnology, School of Life Sciences, Nanjing University, Nanjing 210023, China
| | - Yizhu Xu
- State Key Laboratory of Pharmaceutical Biotechnology, School of Life Sciences, Nanjing University, Nanjing 210023, China
| | - Jing Ye
- State Key Laboratory of Pharmaceutical Biotechnology, School of Life Sciences, Nanjing University, Nanjing 210023, China
| | - Yanjie Gao
- State Key Laboratory of Pharmaceutical Biotechnology, School of Life Sciences, Nanjing University, Nanjing 210023, China
| | - Xueqing Sun
- State Key Laboratory of Pharmaceutical Biotechnology, School of Life Sciences, Nanjing University, Nanjing 210023, China
| | - Tianyi Wang
- State Key Laboratory of Pharmaceutical Biotechnology, School of Life Sciences, Nanjing University, Nanjing 210023, China
| | - Lingdong Kong
- State Key Laboratory of Pharmaceutical Biotechnology, School of Life Sciences, Nanjing University, Nanjing 210023, China
| | - Xingxin Wu
- State Key Laboratory of Pharmaceutical Biotechnology, School of Life Sciences, Nanjing University, Nanjing 210023, China.
| | - Qiang Xu
- State Key Laboratory of Pharmaceutical Biotechnology, School of Life Sciences, Nanjing University, Nanjing 210023, China.
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MSI1 Promotes the Expression of the GBM Stem Cell Marker CD44 by Impairing miRNA-Dependent Degradation. Cancers (Basel) 2020; 12:cancers12123654. [PMID: 33291443 PMCID: PMC7762192 DOI: 10.3390/cancers12123654] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2020] [Revised: 11/30/2020] [Accepted: 12/03/2020] [Indexed: 01/03/2023] Open
Abstract
Simple Summary Glioblastoma (GBM) is the most lethal brain tumor with a median survival rate of approximately 14 months. GBM patients commonly suffer from tumor recurrence, indicating that populations of chemo/radio-resistant stem cell-like tumor cells survive treatments. Here we reveal that the neuronal stem cell marker Musashi1 (MSI1) is highly expressed in primary GBM and recurrences. We identify a novel regulatory role of MSI1 in GBM-derived cell lines and patient-derived tumorspheres, the enhancement of stemness marker expression, here demonstrated for CD44. Furthermore, we provide a rationale for MSI1-centered therapeutic targeting strategies to improve treatment options of this chemo/radio-resistant malignancy. Abstract The stem cell marker Musashi1 (MSI1) is highly expressed during neurogenesis and in glioblastoma (GBM). MSI1 promotes self-renewal and impairs differentiation in cancer and non-malignant progenitor cells. However, a comprehensive understanding of its role in promoting GBM-driving networks remains to be deciphered. We demonstrate that MSI1 is highly expressed in GBM recurrences, an oncologist’s major defiance. For the first time, we provide evidence that MSI1 promotes the expression of stem cell markers like CD44, co-expressed with MSI1 within recurrence-promoting cells at the migrating front of primary GBM samples. With GBM cell models of pediatric and adult origin, including isolated primary tumorspheres, we show that MSI1 promotes stem cell-like characteristics. Importantly, it impairs CD44 downregulation in a 3′UTR- and miRNA-dependent manner by controlling mRNA turnover. This regulation is disturbed by the previously reported MSI1 inhibitor luteolin, providing further evidence for a therapeutic target potential of MSI1 in GBM treatment.
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Orzechowska EJ, Katano T, Bialkowska AB, Yang VW. Interplay among p21 Waf1/Cip1, MUSASHI-1 and Krüppel-like factor 4 in activation of Bmi1-Cre ER reserve intestinal stem cells after gamma radiation-induced injury. Sci Rep 2020; 10:18300. [PMID: 33110120 PMCID: PMC7591575 DOI: 10.1038/s41598-020-75171-w] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2020] [Accepted: 10/12/2020] [Indexed: 12/23/2022] Open
Abstract
Gamma radiation is a commonly used adjuvant treatment for abdominally localized cancer. Since its therapeutic potential is limited due to gastrointestinal (GI) syndrome, elucidation of the regenerative response following radiation-induced gut injury is needed to develop a preventive treatment. Previously, we showed that Krüppel-like factor 4 (KLF4) activates certain quiescent intestinal stem cells (ISCs) marked by Bmi1-CreER to give rise to regenerating crypts following γ irradiation. In the current study, we showed that γ radiation-induced expression of p21Waf1/Cip1 in Bmi1-CreER cells is likely mitigated by MUSASHI-1 (MSI1) acting as a negative regulator of p21Waf1/Cip1 mRNA translation, which promotes exit of the Bmi1-CreER cells from a quiescent state. Additionally, Bmi1-specific Klf4 deletion resulted in decreased numbers of MSI1+ cells in regenerating crypts compared to those of control mice. We showed that KLF4 binds to the Msi1 promoter and activates its expression in vitro. Since MSI1 has been shown to be crucial for crypt regeneration, this finding elucidates a pro-proliferative role of KLF4 during the postirradiation regenerative response. Taken together, our data suggest that the interplay among p21Waf1/Cip1, MSI1 and KLF4 regulates Bmi1-CreER cell survival, exit from quiescence and regenerative potential upon γ radiation-induced injury.
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Affiliation(s)
- Emilia J Orzechowska
- Department of Medicine, Renaissance School of Medicine at Stony Brook University, Stony Brook, NY, USA.,Department of Molecular Biology, Faculty of Biology, University of Warsaw, Warsaw, Poland
| | - Takahito Katano
- Department of Medicine, Renaissance School of Medicine at Stony Brook University, Stony Brook, NY, USA.,Department of Gastroenterology and Metabolism, Nagoya City University Graduate School of Medical Sciences, Nagoya, Japan
| | - Agnieszka B Bialkowska
- Department of Medicine, Renaissance School of Medicine at Stony Brook University, Stony Brook, NY, USA.
| | - Vincent W Yang
- Department of Medicine, Renaissance School of Medicine at Stony Brook University, Stony Brook, NY, USA. .,Department of Physiology and Biophysics, Renaissance School of Medicine at Stony, Brook University, Stony Brook, NY, USA.
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11
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Dong Y, Li J, Liu R, Zhao Z, Wang S, Cui K. Musashi1 expression is negatively correlated with numb expression in brain metastases. Medicine (Baltimore) 2020; 99:e22000. [PMID: 33120728 PMCID: PMC7581019 DOI: 10.1097/md.0000000000022000] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/15/2020] [Revised: 07/25/2020] [Accepted: 07/31/2020] [Indexed: 11/25/2022] Open
Abstract
The expression of tumor stem cell markers musashi1 (msi1) and numb in brain metastases were detected to explore their roles in the development of brain metastases.A total of 51 cases of brain metastasis, 29 cases of primary tumor and 15 cases of normal brain tissue were selected. Immunohistochemistry and reverse transcription polymerase chain reaction (RT-PCR) were used to detect msi1 and numb expression at the protein and mRNA levels. Correlation between msi1 and numb in brain metastases were evaluated.Immunohistochemistry and RT-PCR showed that no significant difference in the expression of msi1 and numb between brain metastases and primary tumors was observed (P > .05); the expression of msi1 and numb in brain metastases was significantly higher than that in normal brain tissues (P < .05); and the expression of msi1 and numb in primary tumors was significantly higher than that in normal brain tissues (P < .05). In general, the expression of msi1 gene was negatively correlated with the expression of numb at mRNA level by Pearson correlation analysis (r = -0.345, P < .05). Additionally, the expression of msi1 and numb in brain metastases was not related to gender, age, and tissue origin (P > .05).Msi1 is highly expressed in brain metastases and primary tumors, while numb is lowly expressed in brain metastases and primary tumors; msi1 and numb are negatively correlated in brain metastases, suggesting that msi1 and numb may have regulatory mechanisms in the development of brain metastases.
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12
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Wu Z, Li C, Li Q, Li J, Lu X. Puerarin alleviates cisplatin-induced acute renal damage and upregulates microRNA-31-related signaling. Exp Ther Med 2020; 20:3122-3129. [PMID: 32855680 PMCID: PMC7444337 DOI: 10.3892/etm.2020.9081] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2020] [Accepted: 06/26/2020] [Indexed: 02/06/2023] Open
Abstract
Cisplatin (DDP) is a commonly used chemotherapy drug; however, the side effects associated with its use, particularly acute kidney injury (AKI), limit its clinical application. Puerarin is a natural flavonoid extracted from the Chinese medical herb Radix puerariae, which has been reported to alleviate DDP-induced nephrotoxicity. However, the mechanisms underlying puerarin regulation on microRNA (miR)-31-mediated signaling pathways in AKI remain unknown. Thus, the present study aimed to investigate the function of puerarin in a DDP-induced AKI rat model via reverse transcription-quantitative PCR and western blot analyses. The results demonstrated that DDP upregulated the levels of miR-31 in a concentration-dependent manner, both in vitro and in vivo. Furthermore, DDP significantly increased blood urea nitrogen and malondialdehyde content, serum creatinine and histopathological changes, while significantly decreasing the expression levels of superoxide dismutase, catalase and glutathione S-transferase in kidney tissues. TUNEL and western blot analyses indicated that DDP increased the expression levels of apoptotic proteins and affected the Numb/Notch1 signaling pathway, which is downstream of miR-31. The effects induced by DDP were counteracted following treatment with puerarin. Taken together, the results of the present study suggest that puerarin exhibits a renal protective effect against DDP-induced AKI by upregulating miR-31 expression and inhibiting the Numb/Notch1 signaling pathway.
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Affiliation(s)
- Zhen Wu
- Department of Clinical Laboratory, The Second Hospital of Shandong University, Jinan, Shandong 250033, P.R. China
| | - Chunfeng Li
- Department of Blood Transfusion, The Second Hospital of Shandong University, Jinan, Shandong 250033, P.R. China
| | - Qiang Li
- Department of Blood Transfusion, The Second Affiliated Hospital of Shandong University of Traditional Chinese Medicine, Jinan, Shandong 250033, P.R. China
| | - Jing Li
- Department of Blood Transfusion, The Second Hospital of Shandong University, Jinan, Shandong 250033, P.R. China
| | - Xin Lu
- Department of Blood Transfusion, The Second Hospital of Shandong University, Jinan, Shandong 250033, P.R. China
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13
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Goldsmith J, Marsh T, Asthana S, Leidal AM, Suresh D, Olshen A, Debnath J. Ribosome profiling reveals a functional role for autophagy in mRNA translational control. Commun Biol 2020; 3:388. [PMID: 32681145 PMCID: PMC7367890 DOI: 10.1038/s42003-020-1090-2] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2019] [Accepted: 06/19/2020] [Indexed: 01/09/2023] Open
Abstract
Autophagy promotes protein degradation, and therefore has been proposed to maintain amino acid pools to sustain protein synthesis during metabolic stress. To date, how autophagy influences the protein synthesis landscape in mammalian cells remains unclear. Here, we utilize ribosome profiling to delineate the effects of genetic ablation of the autophagy regulator, ATG12, on translational control. In mammalian cells, genetic loss of autophagy does not impact global rates of cap dependent translation, even under starvation conditions. Instead, autophagy supports the translation of a subset of mRNAs enriched for cell cycle control and DNA damage repair. In particular, we demonstrate that autophagy enables the translation of the DNA damage repair protein BRCA2, which is functionally required to attenuate DNA damage and promote cell survival in response to PARP inhibition. Overall, our findings illuminate that autophagy impacts protein translation and shapes the protein landscape.
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Affiliation(s)
- Juliet Goldsmith
- Department of Pathology, University of California San Francisco, San Francisco, CA, 94143, USA
| | - Timothy Marsh
- Department of Pathology, University of California San Francisco, San Francisco, CA, 94143, USA
| | - Saurabh Asthana
- Department of Epidemiology and Biostatistics, University of California San Francisco, San Francisco, CA, 94158, USA
- Helen Diller Comprehensive Cancer Center, University of California San Francisco, San Francisco, CA, 94158, USA
| | - Andrew M Leidal
- Department of Pathology, University of California San Francisco, San Francisco, CA, 94143, USA
| | - Deepthisri Suresh
- Department of Pathology, University of California San Francisco, San Francisco, CA, 94143, USA
| | - Adam Olshen
- Department of Epidemiology and Biostatistics, University of California San Francisco, San Francisco, CA, 94158, USA
- Helen Diller Comprehensive Cancer Center, University of California San Francisco, San Francisco, CA, 94158, USA
| | - Jayanta Debnath
- Department of Pathology, University of California San Francisco, San Francisco, CA, 94143, USA.
- Helen Diller Comprehensive Cancer Center, University of California San Francisco, San Francisco, CA, 94158, USA.
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14
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RNA-Targeted Therapies and High-Throughput Screening Methods. Int J Mol Sci 2020; 21:ijms21082996. [PMID: 32340368 PMCID: PMC7216119 DOI: 10.3390/ijms21082996] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2020] [Revised: 04/20/2020] [Accepted: 04/21/2020] [Indexed: 02/07/2023] Open
Abstract
RNA-binding proteins (RBPs) are involved in regulating all aspects of RNA metabolism, including processing, transport, translation, and degradation. Dysregulation of RNA metabolism is linked to a plethora of diseases, such as cancer, neurodegenerative diseases, and neuromuscular disorders. Recent years have seen a dramatic shift in the knowledge base, with RNA increasingly being recognised as an attractive target for precision medicine therapies. In this article, we are going to review current RNA-targeted therapies. Furthermore, we will scrutinise a range of drug discoveries targeting protein-RNA interactions. In particular, we will focus on the interplay between Lin28 and let-7, splicing regulatory proteins and survival motor neuron (SMN) pre-mRNA, as well as HuR, Musashi, proteins and their RNA targets. We will highlight the mechanisms RBPs utilise to modulate RNA metabolism and discuss current high-throughput screening strategies. This review provides evidence that we are entering a new era of RNA-targeted medicine.
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15
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Montalbano M, McAllen S, Sengupta U, Puangmalai N, Bhatt N, Ellsworth A, Kayed R. Tau oligomers mediate aggregation of RNA-binding proteins Musashi1 and Musashi2 inducing Lamin alteration. Aging Cell 2019; 18:e13035. [PMID: 31532069 PMCID: PMC6826126 DOI: 10.1111/acel.13035] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2019] [Revised: 08/07/2019] [Accepted: 08/17/2019] [Indexed: 01/01/2023] Open
Abstract
The exact mechanisms leading to neurodegeneration in Alzheimer's disease (AD) and other tauopathies are not yet entirely understood. However, it is known that several RNA-binding proteins (RBPs) form toxic aggregates and also interact with tau in such granules in tauopathies, including AD. The Musashi (MSI) family of RBPs, consisting of two homologues: Musashi1 and Musashi2, have not been extensively investigated in neurodegenerative diseases. Here, using a tau inducible HEK (iHEK) model we investigate whether MSI proteins contribute to the aggregation of toxic tau oligomers (TauO). Wild-type and mutant P301L tau iHEK cells are used to study the effect of different tau variants on the cellular localization of MSI proteins. Interestingly, we observe that tau co-localizes with MSI in the cytoplasm and nuclei, altering the nuclear transport of MSI. Furthermore, incremental changes in the size and density of nuclear MSI/tau foci are observed. We also report here that TauO interact with MSI to cause the formation of distinct nuclear aggregates. Moreover, tau/MSI aggregates induce structural changes to LaminB1, leading to nuclear instability. These results illustrate a possible mechanism of neurodegeneration mediated by the aggregation of MSI proteins and TauO, suggesting that MSI plays a critical role in cellular dysfunction.
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Affiliation(s)
- Mauro Montalbano
- Mitchell Center for Neurodegenerative DiseasesUniversity of Texas Medical BranchGalvestonTXUSA
- Department of Neurology, Neuroscience and Cell BiologyUniversity of Texas Medical BranchGalvestonTXUSA
| | - Salome McAllen
- Mitchell Center for Neurodegenerative DiseasesUniversity of Texas Medical BranchGalvestonTXUSA
- Department of Neurology, Neuroscience and Cell BiologyUniversity of Texas Medical BranchGalvestonTXUSA
| | - Urmi Sengupta
- Mitchell Center for Neurodegenerative DiseasesUniversity of Texas Medical BranchGalvestonTXUSA
- Department of Neurology, Neuroscience and Cell BiologyUniversity of Texas Medical BranchGalvestonTXUSA
| | - Nicha Puangmalai
- Mitchell Center for Neurodegenerative DiseasesUniversity of Texas Medical BranchGalvestonTXUSA
- Department of Neurology, Neuroscience and Cell BiologyUniversity of Texas Medical BranchGalvestonTXUSA
| | - Nemil Bhatt
- Mitchell Center for Neurodegenerative DiseasesUniversity of Texas Medical BranchGalvestonTXUSA
- Department of Neurology, Neuroscience and Cell BiologyUniversity of Texas Medical BranchGalvestonTXUSA
| | - Anna Ellsworth
- Mitchell Center for Neurodegenerative DiseasesUniversity of Texas Medical BranchGalvestonTXUSA
- Department of Neurology, Neuroscience and Cell BiologyUniversity of Texas Medical BranchGalvestonTXUSA
| | - Rakez Kayed
- Mitchell Center for Neurodegenerative DiseasesUniversity of Texas Medical BranchGalvestonTXUSA
- Department of Neurology, Neuroscience and Cell BiologyUniversity of Texas Medical BranchGalvestonTXUSA
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16
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Wang CF, Zhang HC, Feng XM, Song XM, Wu YN. Knockdown of MSI1 inhibits the proliferation of human oral squamous cell carcinoma by inactivating STAT3 signaling. Int J Mol Med 2019; 44:115-124. [PMID: 31059073 PMCID: PMC6559311 DOI: 10.3892/ijmm.2019.4181] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2018] [Accepted: 04/24/2019] [Indexed: 12/12/2022] Open
Abstract
Musashi RNA-binding protein 1 (MSI1) is highly expressed in several types of cancer; however, its role in oral squamous cell carcinoma (OSCC) remains unknown. The purpose of this study was to investigate the probable mechanism underlying the involvement of MSI1 in OSCC. The results demonstrated that MSI1 was upregulated in OSCC tissues, but not in adjacent healthy tissues. MSI1 silencing resulted in decreased cell proliferative, invasive and migrative capacity. In addition, MSI1 silencing led to cell cycle arrest at the S phase, downregulation of c-Myc and cyclin D1, and upregulation of p21 and p27 levels. Additional studies demonstrated that MSI1 suppression inhibited the activation of signal transducer and activator of transcription 3 (STAT3) signaling. Accordingly, the findings of the present study suggested that MSI1 silencing can suppress OSCC cell proliferation and progression, in part by inhibiting the activation of the c-Myc/STAT3 pathway.
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Affiliation(s)
- Chen-Fei Wang
- Jiangsu Key Laboratory of Oral Diseases, Nanjing Medical University, Nanjing, Jiangsu 210000, P.R. China
| | - Hong-Chuang Zhang
- Jiangsu Key Laboratory of Oral Diseases, Nanjing Medical University, Nanjing, Jiangsu 210000, P.R. China
| | - Xin-Mei Feng
- Department of Oral and Maxillofacial Surgery, Affiliated Hospital of Nantong University, Nantong, Jiangsu 216000, P.R. China
| | - Xiao-Meng Song
- Jiangsu Key Laboratory of Oral Diseases, Nanjing Medical University, Nanjing, Jiangsu 210000, P.R. China
| | - Yu-Nong Wu
- Jiangsu Key Laboratory of Oral Diseases, Nanjing Medical University, Nanjing, Jiangsu 210000, P.R. China
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17
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Lin JC, Tsai JT, Chao TY, Ma HI, Liu WH. Musashi-1 Enhances Glioblastoma Migration by Promoting ICAM1 Translation. Neoplasia 2019; 21:459-468. [PMID: 30959276 PMCID: PMC6453839 DOI: 10.1016/j.neo.2019.02.006] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2018] [Revised: 02/28/2019] [Accepted: 02/28/2019] [Indexed: 12/12/2022] Open
Abstract
Glioblastoma multiforme (GBM) is a lethal brain tumor with a mean survival time of 1 year. One major reason for therapeutic failure is that GBM cells have an extraordinary capacity to invade normal brain tissue beyond the surgical margin, accounting for the lack of treatment efficacy. GBM cells that can infiltrate into the healthy brain possess tumor properties of stemness and invasion, and previous studies demonstrate that Musashi-1 (MSI1), a neural stem cell marker, plays an important role in the maintenance of stem cell status, cellular differentiation, and tumorigenesis in cancers. By analyzing neuronal progenitor cell markers and stemness genes, we predicted that MSI1 might be an important factor in GBM pathogenesis. Because inflammation aids in the proliferation and survival of malignant cells, the inflammatory microenvironment also promotes GBM invasion, and intercellular adhesion molecule-1 (ICAM1), a member of the immunoglobulin superfamily, is involved in inflammation. Our results indicate that the above phenomena are likely due to MSI1 upregulation, which occurred simultaneously with higher expression of ICAM1 in GBM cells. Indeed, MSI1 knockdown effectively suppressed ICAM1 expression and blocked GBM cell motility and invasion, whereas overexpressing ICAM1 reversed these effects. According to RNA immunoprecipitation assays, MSI1-mediated mRNA interactions promote ICAM1 translation. Finally, immunohistochemical analysis showed MSI1 and ICAM-1 to be coexpressed at high levels in GBM tissues. Thus, the MSI1/ICAM1 pathway plays an important role in oncogenic resistance, including increased tumor invasion, and MSI1/ICAM1 may be a target for GBM treatment.
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Affiliation(s)
- Jang-Chun Lin
- Graduate Institute of Clinical Medicine, College of Medicine, Taipei Medical University, Taipei, Taiwan, ROC; Department of Radiation Oncology, Shuang Ho Hospital, Taipei Medical University, Taipei, Taiwan, ROC; Department of Radiology, School of Medicine, College of Medicine, Taipei Medical University, Taipei, Taiwan, ROC
| | - Jo-Ting Tsai
- Department of Radiation Oncology, Shuang Ho Hospital, Taipei Medical University, Taipei, Taiwan, ROC; Department of Radiology, School of Medicine, College of Medicine, Taipei Medical University, Taipei, Taiwan, ROC
| | - Tsu-Yi Chao
- Graduate Institute of Clinical Medicine, College of Medicine, Taipei Medical University, Taipei, Taiwan, ROC; Division of Hematology/Oncology, Shuang-Ho Hospital, Taipei Medical University, Taipei, Taiwan, ROC
| | - Hsin-I Ma
- Department of Neurological Surgery, Tri-Service General Hospital and National Defense Medical Center, No.325, Sec. 2, Cheng-Kung Road, Taipei 11490, Taiwan; Department of Surgery, School of Medicine, National Defense Medical Center, Taipei, Taiwan
| | - Wei-Hsiu Liu
- Department of Neurological Surgery, Tri-Service General Hospital and National Defense Medical Center, No.325, Sec. 2, Cheng-Kung Road, Taipei 11490, Taiwan; Department of Surgery, School of Medicine, National Defense Medical Center, Taipei, Taiwan.
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18
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Human oncoprotein Musashi-2 N-terminal RNA recognition motif backbone assignment and identification of RNA-binding pocket. Oncotarget 2017; 8:106587-106597. [PMID: 29290973 PMCID: PMC5739758 DOI: 10.18632/oncotarget.22540] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2017] [Accepted: 10/30/2017] [Indexed: 12/13/2022] Open
Abstract
RNA-binding protein Musashi-2 (MSI2) is a key regulator in stem cells, it is over-expressed in a variety of cancers and its higher expression is associated with poor prognosis. Like Musashi-1, it contains two N-terminal RRMs (RNA-recognition Motifs, also called RBDs (RNA-binding Domains)), RRM1 and RRM2, which mediate the binding to their target mRNAs. Previous studies have obtained the three-dimensional structures of the RBDs of Musashi-1 and the RBD1:RNA complex. Here we show the binding of MSI2-RRM1 to a 15nt Numb RNA in Fluorescence Polarization assay and time resolved Fluorescence Resonance Energy Transfer assay. Using nuclear magnetic resonance (NMR) spectroscopy we assigned the backbone resonances of MSI2-RRM1, and characterized the direct interaction of RRM1 to Numb RNA r(GUAGU). Our NMR titration and structure modeling studies showed that MSI2-RRM1 and MSI1-RBD1 have similar RNA binding events and binding pockets. This work adds significant information to MSI2-RRM1 structure and RNA binding pocket, and contributes to the development of MSI2 specific and MSI1/MSI2 dual inhibitors.
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19
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Wang Y, Li Y, Liu X, Pu W, Wang X, Wang J, Xiong M, Yao Shugart Y, Jin L. Bagging Nearest-Neighbor Prediction independence Test: an efficient method for nonlinear dependence of two continuous variables. Sci Rep 2017; 7:12736. [PMID: 28986523 PMCID: PMC5630623 DOI: 10.1038/s41598-017-12783-9] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2017] [Accepted: 09/15/2017] [Indexed: 12/03/2022] Open
Abstract
Testing dependence/correlation of two variables is one of the fundamental tasks in statistics. In this work, we proposed an efficient method for nonlinear dependence of two continuous variables (X and Y). We addressed this research question by using BNNPT (Bagging Nearest-Neighbor Prediction independence Test, software available at https://sourceforge.net/projects/bnnpt/). In the BNNPT framework, we first used the value of X to construct a bagging neighborhood structure. We then obtained the out of bag estimator of Y based on the bagging neighborhood structure. The square error was calculated to measure how well Y is predicted by X. Finally, a permutation test was applied to determine the significance of the observed square error. To evaluate the strength of BNNPT compared to seven other methods, we performed extensive simulations to explore the relationship between various methods and compared the false positive rates and statistical power using both simulated and real datasets (Rugao longevity cohort mitochondrial DNA haplogroups and kidney cancer RNA-seq datasets). We concluded that BNNPT is an efficient computational approach to test nonlinear correlation in real world applications.
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Affiliation(s)
- Yi Wang
- Ministry of Education Key Laboratory of Contemporary Anthropology, Collaborative Innovation Center for Genetics and Development, School of Life Sciences, Fudan University, Shanghai, China
| | - Yi Li
- Ministry of Education Key Laboratory of Contemporary Anthropology, Collaborative Innovation Center for Genetics and Development, School of Life Sciences, Fudan University, Shanghai, China
| | - Xiaoyu Liu
- Ministry of Education Key Laboratory of Contemporary Anthropology, Collaborative Innovation Center for Genetics and Development, School of Life Sciences, Fudan University, Shanghai, China
| | - Weilin Pu
- Ministry of Education Key Laboratory of Contemporary Anthropology, Collaborative Innovation Center for Genetics and Development, School of Life Sciences, Fudan University, Shanghai, China
| | - Xiaofeng Wang
- State Key Laboratory of Genetic Engineering, Collaborative Innovation Center for Genetics and Development, School of Life Sciences, Fudan University, Shanghai, China
| | - Jiucun Wang
- State Key Laboratory of Genetic Engineering, Collaborative Innovation Center for Genetics and Development, School of Life Sciences, Fudan University, Shanghai, China
| | - Momiao Xiong
- Ministry of Education Key Laboratory of Contemporary Anthropology, Collaborative Innovation Center for Genetics and Development, School of Life Sciences, Fudan University, Shanghai, China.,Human Genetics Center, School of Public Health, University of Texas Houston Health Sciences Center, Houston, Texas, USA
| | - Yin Yao Shugart
- Ministry of Education Key Laboratory of Contemporary Anthropology, Collaborative Innovation Center for Genetics and Development, School of Life Sciences, Fudan University, Shanghai, China. .,Unit on Statistical Genomics, Division of Intramural Division Programs, National Institute of Mental Health, National Institutes of Health, Bethesda, MD, USA.
| | - Li Jin
- State Key Laboratory of Genetic Engineering, Collaborative Innovation Center for Genetics and Development, School of Life Sciences, Fudan University, Shanghai, China.
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20
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Musashi-1 Enhances Glioblastoma Cell Migration and Cytoskeletal Dynamics through Translational Inhibition of Tensin3. Sci Rep 2017; 7:8710. [PMID: 28821879 PMCID: PMC5562834 DOI: 10.1038/s41598-017-09504-7] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2017] [Accepted: 07/26/2017] [Indexed: 01/11/2023] Open
Abstract
The RNA-binding protein Musashi-1 (MSI1) exerts essential roles in multiple cellular functions, such as maintenance of self-renewal and pluripotency of stem cells. MSI1 overexpression has been observed in several tumor tissues, including glioblastoma (GBM), and is considered as a well-established marker for tumor metastasis and recurrence. However, the molecular mechanisms by which MSI1 regulates cell migration are still undetermined. Here we reported that MSI1 alters cell morphology, promotes cell migration, and increases viscoelasticity of GBM cells. We also found that MSI1 directly binds to the 3′UTR of Tensin 3 (TNS3) mRNA, a negative regulator of cell migration, to inhibit its translation. Additionally, we identified that RhoA-GTP could be a potential regulator in MSI1/TNS3-mediated cell migration and morphological changes. In a xenograft animal model, high expression ratio of MSI1 to TNS3 enhanced GBM tumor migration. We also confirmed that MSI1 and TNS3 expressions are mutually exclusive in migratory tumor lesions, and GBM patients with MSI1high/TNS3low pattern tend to have poor clinical outcome. Taken together, our findings suggested a critical role of MSI1-TNS3 axis in regulating GBM migration and highlighted that the ratio of MSI1/TNS3 could predict metastatic and survival outcome of GBM patients.
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21
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Trivedi P, Kumar RK, Iyer A, Boswell S, Gerarduzzi C, Dadhania VP, Herbert Z, Joshi N, Luyendyk JP, Humphreys BD, Vaidya VS. Targeting Phospholipase D4 Attenuates Kidney Fibrosis. J Am Soc Nephrol 2017; 28:3579-3589. [PMID: 28814511 DOI: 10.1681/asn.2016111222] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2016] [Accepted: 07/11/2017] [Indexed: 01/13/2023] Open
Abstract
Phospholipase D4 (PLD4), a single-pass transmembrane glycoprotein, is among the most highly upregulated genes in murine kidneys subjected to chronic progressive fibrosis, but the function of PLD4 in this process is unknown. Here, we found PLD4 to be overexpressed in the proximal and distal tubular epithelial cells of murine and human kidneys after fibrosis. Genetic silencing of PLD4, either globally or conditionally in proximal tubular epithelial cells, protected mice from the development of fibrosis. Mechanistically, global knockout of PLD4 modulated innate and adaptive immune responses and attenuated the upregulation of the TGF-β signaling pathway and α1-antitrypsin protein (a serine protease inhibitor) expression and downregulation of neutrophil elastase (NE) expression induced by obstructive injury. In vitro, treatment with NE attenuated TGF-β-induced accumulation of fibrotic markers. Furthermore, therapeutic targeting of PLD4 using specific siRNA protected mice from folic acid-induced kidney fibrosis and inhibited the increase in TGF-β signaling, decrease in NE expression, and upregulation of mitogen-activated protein kinase signaling. Immunoprecipitation/mass spectrometry and coimmunoprecipitation experiments confirmed that PLD4 binds three proteins that interact with neurotrophic receptor tyrosine kinase 1, a receptor also known as TrkA that upregulates mitogen-activated protein kinase. PLD4 inhibition also prevented the folic acid-induced upregulation of this receptor in mouse kidneys. These results suggest inhibition of PLD4 as a novel therapeutic strategy to activate protease-mediated degradation of extracellular matrix and reverse fibrosis.
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Affiliation(s)
- Priyanka Trivedi
- Renal Division, Department of Medicine, Brigham and Women's Hospital, Boston, Massachusetts
| | - Ramya K Kumar
- Renal Division, Department of Medicine, Brigham and Women's Hospital, Boston, Massachusetts
| | - Ashwin Iyer
- Renal Division, Department of Medicine, Brigham and Women's Hospital, Boston, Massachusetts
| | - Sarah Boswell
- Harvard Program in Therapeutic Sciences, Harvard Medical School, Boston, Massachusetts
| | - Casimiro Gerarduzzi
- Renal Division, Department of Medicine, Brigham and Women's Hospital, Boston, Massachusetts
| | - Vivekkumar P Dadhania
- Renal Division, Department of Medicine, Brigham and Women's Hospital, Boston, Massachusetts.,Harvard Program in Therapeutic Sciences, Harvard Medical School, Boston, Massachusetts
| | - Zach Herbert
- Molecular Biology Core Facilities, Dana-Farber Cancer Institute, Boston, Massachusetts
| | - Nikita Joshi
- Department of Pathobiology and Diagnostic Investigation, Michigan State University, East Lansing, Michigan
| | - James P Luyendyk
- Department of Pathobiology and Diagnostic Investigation, Michigan State University, East Lansing, Michigan
| | - Benjamin D Humphreys
- Division of Nephrology, Washington University School of Medicine, St. Louis, Missouri; and
| | - Vishal S Vaidya
- Renal Division, Department of Medicine, Brigham and Women's Hospital, Boston, Massachusetts; .,Harvard Program in Therapeutic Sciences, Harvard Medical School, Boston, Massachusetts.,Department of Environmental Health, Harvard T.H. Chan School of Public Health, Boston, Massachusetts
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Kudinov AE, Karanicolas J, Golemis EA, Boumber Y. Musashi RNA-Binding Proteins as Cancer Drivers and Novel Therapeutic Targets. Clin Cancer Res 2017; 23:2143-2153. [PMID: 28143872 DOI: 10.1158/1078-0432.ccr-16-2728] [Citation(s) in RCA: 175] [Impact Index Per Article: 25.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2016] [Revised: 12/16/2016] [Accepted: 12/19/2016] [Indexed: 12/12/2022]
Abstract
Aberrant gene expression that drives human cancer can arise from epigenetic dysregulation. Although much attention has focused on altered activity of transcription factors and chromatin-modulating proteins, proteins that act posttranscriptionally can potently affect expression of oncogenic signaling proteins. The RNA-binding proteins (RBP) Musashi-1 (MSI1) and Musashi-2 (MSI2) are emerging as regulators of multiple critical biological processes relevant to cancer initiation, progression, and drug resistance. Following identification of Musashi as a regulator of progenitor cell identity in Drosophila, the human Musashi proteins were initially linked to control of maintenance of hematopoietic stem cells, then stem cell compartments for additional cell types. More recently, the Musashi proteins were found to be overexpressed and prognostic of outcome in numerous cancer types, including colorectal, lung, and pancreatic cancers; glioblastoma; and several leukemias. MSI1 and MSI2 bind and regulate the mRNA stability and translation of proteins operating in essential oncogenic signaling pathways, including NUMB/Notch, PTEN/mTOR, TGFβ/SMAD3, MYC, cMET, and others. On the basis of these activities, MSI proteins maintain cancer stem cell populations and regulate cancer invasion, metastasis, and development of more aggressive cancer phenotypes, including drug resistance. Although RBPs are viewed as difficult therapeutic targets, initial efforts to develop MSI-specific inhibitors are promising, and RNA interference-based approaches to inhibiting these proteins have had promising outcomes in preclinical studies. In the interim, understanding the function of these translational regulators may yield insight into the relationship between mRNA expression and protein expression in tumors, guiding tumor-profiling analysis. This review provides a current overview of Musashi as a cancer driver and novel therapeutic target. Clin Cancer Res; 23(9); 2143-53. ©2017 AACR.
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Affiliation(s)
- Alexander E Kudinov
- Program in Molecular Therapeutics, Fox Chase Cancer Center, Philadelphia, Pennsylvania
| | - John Karanicolas
- Program in Molecular Therapeutics, Fox Chase Cancer Center, Philadelphia, Pennsylvania
| | - Erica A Golemis
- Program in Molecular Therapeutics, Fox Chase Cancer Center, Philadelphia, Pennsylvania
| | - Yanis Boumber
- Program in Molecular Therapeutics, Fox Chase Cancer Center, Philadelphia, Pennsylvania. .,Department of Hematology/Oncology, Fox Chase Cancer Center, Philadelphia, Pennsylvania
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