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Silverman JB, Krystofiak EE, Caplan LR, Lau KS, Tyska MJ. Intestinal tuft cells assemble a cytoskeletal superstructure composed of co-aligned actin bundles and microtubules. bioRxiv 2024:2024.03.19.585757. [PMID: 38562898 PMCID: PMC10983963 DOI: 10.1101/2024.03.19.585757] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/04/2024]
Abstract
Background & Aims All tissues consist of a distinct set of cell types, which collectively support organ function and homeostasis. Tuft cells are a rare epithelial cell type found in diverse epithelia, where they play important roles in sensing antigens and stimulating downstream immune responses. Exhibiting a unique polarized morphology, tuft cells are defined by an array of giant actin filament bundles that support ∼2 μm of apical membrane protrusion and extend over 7 μm towards the cell's perinuclear region. Despite their established roles in maintaining intestinal epithelial homeostasis, tuft cells remain understudied due to their rarity (e.g. ∼ 1% in the small intestinal epithelium). Details regarding the ultrastructural organization of the tuft cell cytoskeleton, the molecular components involved in building the array of giant actin bundles, and how these cytoskeletal structures support tuft cell biology remain unclear. Methods To begin to answer these questions, we used advanced light and electron microscopy to perform quantitative morphometry of the small intestinal tuft cell cytoskeleton. Results We found that tuft cell core bundles consist of actin filaments that are crosslinked in a parallel "barbed-end out" configuration. These polarized structures are also supported by a unique group of tuft cell enriched actin-binding proteins that are differentially localized along the giant core bundles. Furthermore, we found that tuft cell actin bundles are co-aligned with a highly ordered network of microtubules. Conclusions Tuft cells assemble a cytoskeletal superstructure that is well positioned to serve as a track for subcellular transport along the apical-basolateral axis and in turn, support the dynamic sensing functions that are critical for intestinal epithelial homeostasis. SYNOPSIS This research leveraged advanced light and electron microscopy to perform quantitative morphometry of the intestinal tuft cell cytoskeleton. Three-dimensional reconstructions of segmented image data revealed a co-aligned actin-microtubule superstructure that may play a fundamental role in tuft cell function.
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Alibardi L, Surbek M, Eckhart L. Comparative immunohistochemical analysis suggests a conserved role of EPS8L1 in epidermal and hair follicle barriers of mammals. Protoplasma 2024; 261:333-349. [PMID: 37889356 DOI: 10.1007/s00709-023-01898-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/19/2023] [Accepted: 10/02/2023] [Indexed: 10/28/2023]
Abstract
The mammalian skin and its appendages depend on tightly coordinated differentiation of epithelial cells. Epidermal growth factor receptor (EGFR) pathway substrate 8 (EPS8) like 1 (EPS8L1) is enriched in the epidermis among human tissues and has also been detected in the epidermis of lizards. Here, we show by the analysis of single-cell RNA-sequencing data that EPS8L1 mRNA is co-expressed with filaggrin and loricrin in terminally differentiated human epidermal keratinocytes. Comparative genomics indicated that EPS8L1 is conserved in all main clades of mammals, whereas the orthologous gene has been lost in birds. Using a polyclonal antibody against EPS8L1, we performed an immunohistochemical screening of skin from diverse mammalian species and immuno-electron microscopy of human skin. EPS8L1 was detected predominantly in the granular layer of the epidermis in monotremes, marsupial, and placental mammals. The labeling was partly associated with cell membranes, and it was evident along the perimeter of keratinocytes at the transition with the cornified layer of the epidermis, similar to involucrin distribution. Basal, spinous, and the fully mature cornified layers lacked immunolabeling of EPS8L1. In addition to the epidermis, the hair follicle inner root sheath (IRS) was immunolabeled. Both epidermal granular layer and IRS contribute to the barrier function of the skin, suggesting that EPS8L1 is involved in the regulation of these barriers.
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Affiliation(s)
- Lorenzo Alibardi
- Comparative Histolab Padova, Padua, Italy.
- Department of Biology, Via Selmi 3, University of Bologna, 40126, Bologna, Italy.
| | - Marta Surbek
- Department of Dermatology, Medical University of Vienna, Vienna, Austria
| | - Leopold Eckhart
- Department of Dermatology, Medical University of Vienna, Vienna, Austria
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Abstract
Inner ear hair cells assemble mechanosensitive hair bundles on their apical surface that transduce sounds and accelerations. Each hair bundle is comprised of ∼ 100 individual stereocilia that are arranged into rows of increasing height and width; their specific and precise architecture being necessary for mechanoelectrical transduction (MET). The actin cytoskeleton is fundamental to establishing this architecture, not only by forming the structural scaffold shaping each stereocilium, but also by composing rootlets and the cuticular plate that together provide a stable foundation supporting each stereocilium. In concert with the actin cytoskeleton, a large assortment of actin-binding proteins (ABPs) function to cross-link actin filaments into specific topologies, as well as control actin filament growth, severing, and capping. These processes are individually critical for sensory transduction and are all disrupted in hereditary forms of human hearing loss. In this review, we provide an overview of actin-based structures in the hair bundle and the molecules contributing to their assembly and functional properties. We also highlight recent advances in mechanisms driving stereocilia elongation and how these processes are tuned by MET.
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Affiliation(s)
- Jinho Park
- Department of Pharmacology and Therapeutics, University of Florida, Gainesville, FL 32610, United States; Myology Institute, University of Florida, Gainesville, FL 32610, United States
| | - Jonathan E Bird
- Department of Pharmacology and Therapeutics, University of Florida, Gainesville, FL 32610, United States; Myology Institute, University of Florida, Gainesville, FL 32610, United States.
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Mehrabipour M, Jasemi NSK, Dvorsky R, Ahmadian MR. A Systematic Compilation of Human SH3 Domains: A Versatile Superfamily in Cellular Signaling. Cells 2023; 12:2054. [PMID: 37626864 PMCID: PMC10453029 DOI: 10.3390/cells12162054] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2023] [Revised: 08/02/2023] [Accepted: 08/02/2023] [Indexed: 08/27/2023] Open
Abstract
SRC homology 3 (SH3) domains are fundamental modules that enable the assembly of protein complexes through physical interactions with a pool of proline-rich/noncanonical motifs from partner proteins. They are widely studied modular building blocks across all five kingdoms of life and viruses, mediating various biological processes. The SH3 domains are also implicated in the development of human diseases, such as cancer, leukemia, osteoporosis, Alzheimer's disease, and various infections. A database search of the human proteome reveals the existence of 298 SH3 domains in 221 SH3 domain-containing proteins (SH3DCPs), ranging from 13 to 720 kilodaltons. A phylogenetic analysis of human SH3DCPs based on their multi-domain architecture seems to be the most practical way to classify them functionally, with regard to various physiological pathways. This review further summarizes the achievements made in the classification of SH3 domain functions, their binding specificity, and their significance for various diseases when exploiting SH3 protein modular interactions as drug targets.
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Affiliation(s)
- Mehrnaz Mehrabipour
- Institute of Biochemistry and Molecular Biology II, Medical Faculty and University Hospital Düsseldorf, Heinrich Heine University Düsseldorf, 40225 Düsseldorf, Germany; (M.M.); (N.S.K.J.)
| | - Neda S. Kazemein Jasemi
- Institute of Biochemistry and Molecular Biology II, Medical Faculty and University Hospital Düsseldorf, Heinrich Heine University Düsseldorf, 40225 Düsseldorf, Germany; (M.M.); (N.S.K.J.)
| | - Radovan Dvorsky
- Institute of Biochemistry and Molecular Biology II, Medical Faculty and University Hospital Düsseldorf, Heinrich Heine University Düsseldorf, 40225 Düsseldorf, Germany; (M.M.); (N.S.K.J.)
- Center for Interdisciplinary Biosciences, P. J. Šafárik University, 040 01 Košice, Slovakia
| | - Mohammad R. Ahmadian
- Institute of Biochemistry and Molecular Biology II, Medical Faculty and University Hospital Düsseldorf, Heinrich Heine University Düsseldorf, 40225 Düsseldorf, Germany; (M.M.); (N.S.K.J.)
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Tian S, Tang W, Zhong Z, Wang Z, Xie X, Liu H, Chen F, Liu J, Han Y, Qin Y, Tan Z, Xiao Q. Identification of Runs of Homozygosity Islands and Functional Variants in Wenchang Chicken. Animals (Basel) 2023; 13:ani13101645. [PMID: 37238076 DOI: 10.3390/ani13101645] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2023] [Revised: 05/11/2023] [Accepted: 05/13/2023] [Indexed: 05/28/2023] Open
Abstract
Wenchang chickens, a native breed in the Hainan province of China, are famous for their meat quality and adaptability to tropical conditions. For effective management and conservation, in the present study, we systematically investigated the characteristics of genetic variations and runs of homozygosity (ROH) along the genome using re-sequenced whole-genome sequencing data from 235 Wenchang chickens. A total of 16,511,769 single nucleotide polymorphisms (SNPs) and 53,506 ROH segments were identified in all individuals, and the ROH of Wenchang chicken were mainly composed of short segments (0-1 megabases (Mb)). On average, 5.664% of the genome was located in ROH segments across the Wenchang chicken samples. According to several parameters, the genetic diversity of the Wenchang chicken was relatively high. The average inbreeding coefficient of Wenchang chickens based on FHOM, FGRM, and FROH was 0.060 ± 0.014, 0.561 ± 0.020, and 0.0566 ± 0.01, respectively. A total of 19 ROH islands containing 393 genes were detected on 9 different autosomes. Some of these genes were putatively associated with growth performance (AMY1a), stress resistance (THEMIS2, PIK3C2B), meat traits (MBTPS1, DLK1, and EPS8L2), and fat deposition (LANCL2, PPARγ). These findings provide a better understanding of the degree of inbreeding in Wenchang chickens and the hereditary basis of the characteristics shaped under selection. These results are valuable for the future breeding, conservation, and utilization of Wenchang and other chicken breeds.
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Affiliation(s)
- Shuaishuai Tian
- Hainan Key Laboratory of Tropical Animal Reproduction & Breeding and Epidemic Disease Research, College of Animal Science and Technology, Hainan University, Haikou 570228, China
| | - Wendan Tang
- Hainan Key Laboratory of Tropical Animal Reproduction & Breeding and Epidemic Disease Research, College of Animal Science and Technology, Hainan University, Haikou 570228, China
| | - Ziqi Zhong
- Hainan Key Laboratory of Tropical Animal Reproduction & Breeding and Epidemic Disease Research, College of Animal Science and Technology, Hainan University, Haikou 570228, China
| | - Ziyi Wang
- Hainan Key Laboratory of Tropical Animal Reproduction & Breeding and Epidemic Disease Research, College of Animal Science and Technology, Hainan University, Haikou 570228, China
| | - Xinfeng Xie
- Hainan Key Laboratory of Tropical Animal Reproduction & Breeding and Epidemic Disease Research, College of Animal Science and Technology, Hainan University, Haikou 570228, China
| | - Hong Liu
- Hainan Key Laboratory of Tropical Animal Reproduction & Breeding and Epidemic Disease Research, College of Animal Science and Technology, Hainan University, Haikou 570228, China
| | - Fuwen Chen
- Hainan Key Laboratory of Tropical Animal Reproduction & Breeding and Epidemic Disease Research, College of Animal Science and Technology, Hainan University, Haikou 570228, China
| | - Jiaxin Liu
- Hainan Key Laboratory of Tropical Animal Reproduction & Breeding and Epidemic Disease Research, College of Animal Science and Technology, Hainan University, Haikou 570228, China
| | - Yuxin Han
- Hainan Key Laboratory of Tropical Animal Reproduction & Breeding and Epidemic Disease Research, College of Animal Science and Technology, Hainan University, Haikou 570228, China
| | - Yao Qin
- Hainan Key Laboratory of Tropical Animal Reproduction & Breeding and Epidemic Disease Research, College of Animal Science and Technology, Hainan University, Haikou 570228, China
| | - Zhen Tan
- Hainan Key Laboratory of Tropical Animal Reproduction & Breeding and Epidemic Disease Research, College of Animal Science and Technology, Hainan University, Haikou 570228, China
| | - Qian Xiao
- Hainan Key Laboratory of Tropical Animal Reproduction & Breeding and Epidemic Disease Research, College of Animal Science and Technology, Hainan University, Haikou 570228, China
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Asmussen NC, Alam S, Lin Z, Cohen DJ, Schwartz Z, Boyan BD. 1α,25-Dihydroxyvitamin D 3 Regulates microRNA Packaging in Extracellular Matrix Vesicles and Their Release in the Matrix. Calcif Tissue Int 2023; 112:493-511. [PMID: 36840756 DOI: 10.1007/s00223-023-01067-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/01/2022] [Accepted: 01/30/2023] [Indexed: 02/26/2023]
Abstract
Growth plate chondrocytes are regulated by numerous factors and hormones as they mature during endochondral bone formation, including transforming growth factor beta-1 (TGFb1), bone morphogenetic protein 2 (BMP2), insulin-like growth factor-1 (IFG1), parathyroid hormone and parathyroid hormone related peptide (PTH, PTHrP), and Indian hedgehog (IHH). Chondrocytes in the growth plate's growth zone (GC) produce and export matrix vesicles (MVs) under the regulation of 1α,25-dihydroxyvitamin D3 [1α,25(OH)2D3]. 1α,25(OH)2D3 regulates MV enzyme composition genomically and 1α,25(OH)2D3 secreted by the cells acts on the MV membrane nongenomically, destabilizing it and releasing MV enzymes. This study examined the regulatory role 1α,25(OH)2D3 has over production and packaging of microRNA (miRNA) into MVs by GC cells and the release of miRNA by direct action on MVs. Costochondral cartilage GC cells were treated with 1α,25(OH)2D3 and the miRNA in the cells and MVs sequenced. We also treated MVs with 1α,25(OH)2D3 and determined if the miRNA was released. To assess whether MVs can act directly with chondrocytes and if this is regulated by 1α,25(OH)2D3, we stained MVs with a membrane dye and treated GC cells with them. 1α,25(OH)2D3 regulated production and packaging of a unique population of miRNA into MVs compared to the vehicle control population. 1α,25(OH)2D3 treatment of MVs did not release miRNA. Stained MVs were endocytosed by GC cells and this was increased with 1α,25(OH)2D3 treatment. This study adds new regulatory roles for 1α,25(OH)2D3 with respect to packaging and transport of MV miRNAs.
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Affiliation(s)
- Niels C Asmussen
- School of Integrative Life Sciences, Virginia Commonwealth University, Richmond, VA, USA
| | - Sheikh Alam
- School of Dentistry, Virginia Commonwealth University, Richmond, VA, USA
| | - Zhao Lin
- School of Dentistry, Virginia Commonwealth University, Richmond, VA, USA
| | - David J Cohen
- College of Engineering, Virginia Commonwealth University, Richmond, VA, USA
| | - Zvi Schwartz
- College of Engineering, Virginia Commonwealth University, Richmond, VA, USA
- Department of Periodontics, University of Texas Health Science Center at San Antonio, San Antonio, TX, USA
| | - Barbara D Boyan
- College of Engineering, Virginia Commonwealth University, Richmond, VA, USA.
- Wallace H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology, Atlanta, GA, USA.
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Alibardi L. Immunolocalization of Pglyrp3 and Eps8l1 proteins in the regenerating lizard epidermis indicates they contribute to epidermal barrier formation. ZOOLOGY 2023; 157:126080. [PMID: 36854226 DOI: 10.1016/j.zool.2023.126080] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2022] [Revised: 02/11/2023] [Accepted: 02/19/2023] [Indexed: 02/25/2023]
Abstract
During tail regeneration in lizards the new corneous layer formed in the regenerating epidermis includes antimicrobial peptides, cystatin and serpins, likely forming an anti-microbial barrier. The present study aims to reveal other proteins potentially contributing to this protective barrier of the epidermis. Using immunohistochemistry we have detected a peptidoglycan-like recognition protein-3 (pglyrp3), an antimicrobial molecule, and an epidermal growth factor receptor kinase 8 l (eps8l), a receptor of EGF (Epidermal Growth Factor) that stimulates epidermal formation. The study shows that the two proteins are mostly accumulated in the forming wound epidermis and in the shedding layer of the regenerating scales. The shedding layer is the intra-epidermal layer that allows the separation of the initial corneous layer from the regenerating epidermis. While presence of pglyrp3 is likely related to the formation of the anti-microbial barrier, the function of the eps8l protein in epidermal regeneration remains unknown. Whether the latter protein is involved in keratinocyte movement within the regenerating epidermis has to be specifically determined in future studies. Together with the antimicrobial peptides cystatin and serpins, previously detected in the wound epidermis and shedding layer, the present study indicates that pglyp3, and potentially eps8l, contribute to protect the new skin and underlying regenerated tissues from the potential microbe invasion.
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Affiliation(s)
- Lorenzo Alibardi
- Comparative Histolab Padova, Italy; Department of Biology, University of Bologna, Italy.
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Kurzawa N, Leo IR, Stahl M, Kunold E, Becher I, Audrey A, Mermelekas G, Huber W, Mateus A, Savitski MM, Jafari R. Deep thermal profiling for detection of functional proteoform groups. Nat Chem Biol 2023:10.1038/s41589-023-01284-8. [PMID: 36941476 PMCID: PMC10374440 DOI: 10.1038/s41589-023-01284-8] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2022] [Accepted: 02/09/2023] [Indexed: 03/23/2023]
Abstract
The complexity of the functional proteome extends considerably beyond the coding genome, resulting in millions of proteoforms. Investigation of proteoforms and their functional roles is important to understand cellular physiology and its deregulation in diseases but challenging to perform systematically. Here we applied thermal proteome profiling with deep peptide coverage to detect functional proteoform groups in acute lymphoblastic leukemia cell lines with different cytogenetic aberrations. We detected 15,846 proteoforms, capturing differently spliced, cleaved and post-translationally modified proteins expressed from 9,290 genes. We identified differential co-aggregation of proteoform pairs and established links to disease biology. Moreover, we systematically made use of measured biophysical proteoform states to find specific biomarkers of drug sensitivity. Our approach, thus, provides a powerful and unique tool for systematic detection and functional annotation of proteoform groups.
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Affiliation(s)
- Nils Kurzawa
- Genome Biology Unit, European Molecular Biology Laboratory (EMBL), Heidelberg, Germany
- Institute for Research in Biomedicine (IRB Barcelona), Barcelona Institute of Science and Technology, Barcelona, Spain
| | - Isabelle Rose Leo
- Clinical Proteomics Mass Spectrometry, Department of Oncology-Pathology Karolinska Institutet, Science for Life Laboratory, Solna, Sweden
| | - Matthias Stahl
- Clinical Proteomics Mass Spectrometry, Department of Oncology-Pathology Karolinska Institutet, Science for Life Laboratory, Solna, Sweden
| | - Elena Kunold
- Clinical Proteomics Mass Spectrometry, Department of Oncology-Pathology Karolinska Institutet, Science for Life Laboratory, Solna, Sweden
| | - Isabelle Becher
- Genome Biology Unit, European Molecular Biology Laboratory (EMBL), Heidelberg, Germany
| | - Anastasia Audrey
- Clinical Proteomics Mass Spectrometry, Department of Oncology-Pathology Karolinska Institutet, Science for Life Laboratory, Solna, Sweden
| | - Georgios Mermelekas
- Clinical Proteomics Mass Spectrometry, Department of Oncology-Pathology Karolinska Institutet, Science for Life Laboratory, Solna, Sweden
| | - Wolfgang Huber
- Genome Biology Unit, European Molecular Biology Laboratory (EMBL), Heidelberg, Germany
| | - André Mateus
- Genome Biology Unit, European Molecular Biology Laboratory (EMBL), Heidelberg, Germany
| | - Mikhail M Savitski
- Genome Biology Unit, European Molecular Biology Laboratory (EMBL), Heidelberg, Germany.
| | - Rozbeh Jafari
- Clinical Proteomics Mass Spectrometry, Department of Oncology-Pathology Karolinska Institutet, Science for Life Laboratory, Solna, Sweden.
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Ren G, Song S, Zhang SX, Liu Y, Lv Y, Wang YH, Zhao R, Li XY. Brain region-specific genome-wide deoxyribonucleic acid methylation analysis in patients with Alzheimer's disease. Front Mol Neurosci 2023; 16:971565. [PMID: 37122620 PMCID: PMC10133508 DOI: 10.3389/fnmol.2023.971565] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2022] [Accepted: 01/16/2023] [Indexed: 05/02/2023] Open
Abstract
Objective Alzheimer's disease (AD) is a neurodegenerative disease characterized by neuropathology and cognitive decline and associated with age. The comprehensive deoxyribonucleic acid methylation (DNAm)-transcriptome profile association analysis conducted in this study aimed to establish whole-genome DNAm profiles and explore DNAm-related genes and their potential functions. More appropriate biomarkers were expected to be identified in terms of AD. Materials and methods Illumina 450KGSE59685 dataset AD (n = 54) and HC (n = 21) and ribonucleic-acid-sequencing data GSE118553 dataset AD patients (n = 21) and HCs (n = 13) were obtained from the gene expression omnibus database before a comprehensive DNAm-transcriptome profile association analysis, and we performed functional enrichment analysis by Gene Ontology (GO) and Kyoto Encyclopedia of Genes and Genomes pathway enrichment analyses (KEGG). Three transgenic mice and three wild-type mice were used to validate the hub genes. Results A total of 18,104 DNAm sites in healthy controls (n = 21) and AD patients (n = 54) were surveyed across three brain regions (superior temporal gyrus, entorhinal cortex, and dorsolateral prefrontal cortex). With the addition of the transcriptome analysis, eight hypomethylated-related highly expressed genes and 61 hypermethylated-related lowly expressed genes were identified. Based on 69 shared differentially methylated genes (DMGs), the function enrichment analysis indicated Guanosine triphosphate enzymes (GTPase) regulator activity, a synaptic vesicle cycle, and tight junction functioning. Following this, mice-based models of AD were constructed, and five hub DMGs were verified, which represented a powerful, disease-specific DNAm signature for AD. Conclusion The results revealed that the cross-brain region DNAm was altered in those with AD. The alterations in DNAm affected the target gene expression and participated in the key biological processes of AD. The study provides a valuable epigenetic resource for identifying DNAm-based diagnostic biomarkers, developing effective drugs, and studying AD pathogenesis.
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Affiliation(s)
- Gang Ren
- Department of Neurology, Third Hospital of Shanxi Medical University, Shanxi Bethune Hospital, Shanxi Academy of Medical Sciences, Tongji Shanxi Hospital, Taiyuan, China
| | - Shan Song
- Department of Rheumatology, The Second Hospital of Shanxi Medical University, Taiyuan, China
- Key Laboratory of Cellular Physiology at Shanxi Medical University, Ministry of Education, Taiyuan, China
| | - Sheng-Xiao Zhang
- Department of Rheumatology, The Second Hospital of Shanxi Medical University, Taiyuan, China
- Key Laboratory of Cellular Physiology at Shanxi Medical University, Ministry of Education, Taiyuan, China
| | - Yan Liu
- Department of Rheumatology, The Second Hospital of Shanxi Medical University, Taiyuan, China
- Key Laboratory of Cellular Physiology at Shanxi Medical University, Ministry of Education, Taiyuan, China
| | - Yan Lv
- Department of Nephrology, Third Hospital of Shanxi Medical University, Shanxi Bethune Hospital, Shanxi Academy of Medical Sciences, Tongji Shanxi Hospital, Taiyuan, China
| | - Yan-Hong Wang
- Department of Neurology, Third Hospital of Shanxi Medical University, Shanxi Bethune Hospital, Shanxi Academy of Medical Sciences, Tongji Shanxi Hospital, Taiyuan, China
| | - Rong Zhao
- Department of Rheumatology, The Second Hospital of Shanxi Medical University, Taiyuan, China
- Key Laboratory of Cellular Physiology at Shanxi Medical University, Ministry of Education, Taiyuan, China
| | - Xin-Yi Li
- Department of Neurology, Third Hospital of Shanxi Medical University, Shanxi Bethune Hospital, Shanxi Academy of Medical Sciences, Tongji Shanxi Hospital, Taiyuan, China
- *Correspondence: Xin-Yi Li,
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Dolat L, Carpenter VK, Chen YS, Suzuki M, Smith EP, Kuddar O, Valdivia RH. Chlamydia repurposes the actin-binding protein EPS8 to disassemble epithelial tight junctions and promote infection. Cell Host Microbe 2022; 30:1685-1700.e10. [PMID: 36395759 PMCID: PMC9793342 DOI: 10.1016/j.chom.2022.10.013] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2022] [Revised: 08/08/2022] [Accepted: 10/21/2022] [Indexed: 11/17/2022]
Abstract
Invasive microbial pathogens often disrupt epithelial barriers, yet the mechanisms used to dismantle tight junctions are poorly understood. Here, we show that the obligate pathogen Chlamydia trachomatis uses the effector protein TepP to transiently disassemble tight junctions early during infection. TepP alters the tyrosine phosphorylation status of host proteins involved in cytoskeletal regulation, including the filamentous actin-binding protein EPS8. We determined that TepP and EPS8 are necessary and sufficient to remodel tight junctions and that the ensuing disruption of epithelial barrier function promotes secondary invasion events. The genetic deletion of EPS8 renders epithelial cells and endometrial organoids resistant to TepP-mediated tight junction remodeling. Finally, TepP and EPS8 promote infection in murine models of infections, with TepP mutants displaying defects in ascension to the upper genital tract. These findings reveal a non-canonical function of EPS8 in the disassembly of epithelial junctions and an important role for Chlamydia pathogenesis.
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Affiliation(s)
- Lee Dolat
- Department of Molecular Genetics and Microbiology, Duke University Medical Center, Durham, NC 27710, USA
| | - Victoria K Carpenter
- Department of Molecular Genetics and Microbiology, Duke University Medical Center, Durham, NC 27710, USA
| | - Yi-Shan Chen
- Department of Molecular Genetics and Microbiology, Duke University Medical Center, Durham, NC 27710, USA
| | - Michitaka Suzuki
- Department of Molecular Genetics and Microbiology, Duke University Medical Center, Durham, NC 27710, USA
| | - Erin P Smith
- Department of Molecular Genetics and Microbiology, Duke University Medical Center, Durham, NC 27710, USA
| | - Ozge Kuddar
- Department of Molecular Genetics and Microbiology, Duke University Medical Center, Durham, NC 27710, USA
| | - Raphael H Valdivia
- Department of Molecular Genetics and Microbiology, Duke University Medical Center, Durham, NC 27710, USA.
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Pollock GL, Grishin AM, Giogha C, Gan J, Oates CV, McMillan PJ, Gaeta I, Tyska MJ, Pearson JS, Scott NE, Cygler M, Hartland EL. Targeting of microvillus protein Eps8 by the NleH effector kinases from enteropathogenic E. coli. Proc Natl Acad Sci U S A 2022; 119:e2204332119. [PMID: 35976880 DOI: 10.1073/pnas.2204332119] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023] Open
Abstract
Attaching and effacing (AE) lesion formation on enterocytes by enteropathogenic Escherichia coli (EPEC) requires the EPEC type III secretion system (T3SS). Two T3SS effectors injected into the host cell during infection are the atypical kinases, NleH1 and NleH2. However, the host targets of NleH1 and NleH2 kinase activity during infection have not been reported. Here phosphoproteomics identified Ser775 in the microvillus protein Eps8 as a bona fide target of NleH1 and NleH2 phosphorylation. Both kinases interacted with Eps8 through previously unrecognized, noncanonical "proline-rich" motifs, PxxDY, that bound the Src Homology 3 (SH3) domain of Eps8. Structural analysis of the Eps8 SH3 domain bound to a peptide containing one of the proline-rich motifs from NleH showed that the N-terminal part of the peptide adopts a type II polyproline helix, and its C-terminal "DY" segment makes multiple contacts with the SH3 domain. Ser775 phosphorylation by NleH1 or NleH2 hindered Eps8 bundling activity and drove dispersal of Eps8 from the AE lesion during EPEC infection. This finding suggested that NleH1 and NleH2 altered the cellular localization of Eps8 and the cytoskeletal composition of AE lesions during EPEC infection.
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Liu W, Huang Z, Xia J, Cui Z, Li L, Qi Z, Liu W. Gene Expression Profile Associated with Asmt Knockout-Induced Depression-Like Behaviors and Exercise Effects in Mouse Hypothalamus. Biosci Rep 2022:BSR20220800. [PMID: 35771226 DOI: 10.1042/BSR20220800] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2022] [Revised: 06/16/2022] [Accepted: 06/29/2022] [Indexed: 11/17/2022] Open
Abstract
Sleep disorder caused by abnormal circadian rhythm is one of the main symptoms and risk factors of depression. As a known hormone regulating circadian rhythms, melatonin (MT) is also namely N-acetyl-5-methoxytryptamine. N-acetylserotonin methyltransferase (Asmt) is the key rate-limiting enzyme of MT synthesis and has been reportedly associated with depression. Although 50–90% of patients with depression have sleep disorders, there are no effective treatment ways in the clinic. Exercise can regulate circadian rhythm and play an important role in depression treatment. In the present study, we showed that Asmt knockout induced depression-like behaviors, which were ameliorated by swimming exercise. Moreover, swimming exercise increased serum levels of MT and 5-hydroxytryptamine (5-HT) in Asmt knockout mice. In addition, the microarray data identified 10 differentially expressed genes (DEGs) in KO mice compared with WT mice and 29 DEGs in KO mice after swimming exercise. Among the DEGs, the direction and magnitude of change in epidermal growth factor receptor pathway substrate 8-like 1 (Eps8l1) and phospholipase C-β 2 (Plcb2) were confirmed by qRT-PCR partly. Subsequent bioinformatic analysis showed that these DEGs were enriched significantly in the p53 signaling pathway, long-term depression and estrogen signaling pathway. In the protein–protein interaction (PPI) networks, membrane palmitoylated protein 1 (Mpp1) and p53-induced death domain protein 1 (Pidd1) were hub genes to participate in the pathological mechanisms of depression and exercise intervention. These findings may provide new targets for the treatment of depression.
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13
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Drastichova Z, Trubacova R, Novotny J. β-Arrestin2 Is Critically Involved in the Differential Regulation of Phosphosignaling Pathways by Thyrotropin-Releasing Hormone and Taltirelin. Cells 2022; 11:1473. [PMID: 35563779 DOI: 10.3390/cells11091473] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2022] [Revised: 04/22/2022] [Accepted: 04/25/2022] [Indexed: 12/17/2022] Open
Abstract
In recent years, thyrotropin-releasing hormone (TRH) and its analogs, including taltirelin (TAL), have demonstrated a range of effects on the central nervous system that represent potential therapeutic agents for the treatment of various neurological disorders, including neurodegenerative diseases. However, the molecular mechanisms of their actions remain poorly understood. In this study, we investigated phosphosignaling dynamics in pituitary GH1 cells affected by TRH and TAL and the putative role of β-arrestin2 in mediating these effects. Our results revealed widespread alterations in many phosphosignaling pathways involving signal transduction via small GTPases, MAP kinases, Ser/Thr- and Tyr-protein kinases, Wnt/β-catenin, and members of the Hippo pathway. The differential TRH- or TAL-induced phosphorylation of numerous proteins suggests that these ligands exhibit some degree of biased agonism at the TRH receptor. The different phosphorylation patterns induced by TRH or TAL in β-arrestin2-deficient cells suggest that the β-arrestin2 scaffold is a key factor determining phosphorylation events after TRH receptor activation. Our results suggest that compounds that modulate kinase and phosphatase activity can be considered as additional adjuvants to enhance the potential therapeutic value of TRH or TAL.
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14
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Kawakami T, Raghavan V, Ruhe AL, Jensen MK, Milano A, Nelson TC, Boyko AR. Early onset adult deafness in the Rhodesian Ridgeback dog is associated with an in-frame deletion in the EPS8L2 gene. PLoS One 2022; 17:e0264365. [PMID: 35385474 PMCID: PMC8985935 DOI: 10.1371/journal.pone.0264365] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2021] [Accepted: 02/08/2022] [Indexed: 11/19/2022] Open
Abstract
Domestic dogs exhibit diverse types of both congenital and non-congenital hearing losses. Rhodesian Ridgebacks can suffer from a progressive hearing loss in the early stage of their life, a condition known as early onset adult deafness (EOAD), where they lose their hearing ability within 1–2 years after birth. In order to investigate the genetic basis of this hereditary hearing disorder, we performed a genome-wide association study (GWAS) by using a sample of 23 affected and 162 control Rhodesian Ridgebacks. We identified a genomic region on canine chromosome 18 (CFA18) that is strongly associated with EOAD, and our subsequent targeted Sanger sequencing analysis identified a 12-bp inframe deletion in EPS8L2 (CFA18:25,868,739–25,868,751 in the UMICH_Zoey_3.1/canFam5 reference genome build). Additional genotyping confirmed a strong association between the 12-bp deletion and EOAD, where all affected dogs were homozygous for the deletion, while none of the control dogs was a deletion homozygote. A segregation pattern of this deletion in a 2-generation nuclear family indicated an autosomal recessive mode of inheritance. Since EPS8L2 plays a critical role in the maintenance and integrity of the inner ear hair cells in humans and other mammals, the inframe deletion found in this study represents a strong candidate causal mutation for EOAD in Rhodesian Ridgebacks. Genetic and clinical similarities between childhood deafness in humans and EOAD in Rhodesian Ridgebacks emphasizes the potential value of this dog breed in translational research in hereditary hearing disorders.
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Affiliation(s)
- Takeshi Kawakami
- Embark Veterinary, Inc., Boston, Massachusetts, United States of America
- * E-mail: (ARB); (TK)
| | - Vandana Raghavan
- Embark Veterinary, Inc., Boston, Massachusetts, United States of America
| | - Alison L. Ruhe
- Embark Veterinary, Inc., Boston, Massachusetts, United States of America
- ProjectDog, Davis, CA, United States of America
| | - Meghan K. Jensen
- Embark Veterinary, Inc., Boston, Massachusetts, United States of America
| | - Ausra Milano
- Embark Veterinary, Inc., Boston, Massachusetts, United States of America
| | - Thomas C. Nelson
- Embark Veterinary, Inc., Boston, Massachusetts, United States of America
| | - Adam R. Boyko
- Embark Veterinary, Inc., Boston, Massachusetts, United States of America
- Department of Biomedical Sciences, College of Veterinary Medicine, Cornell University, Ithaca, New York, United States of America
- * E-mail: (ARB); (TK)
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15
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Alberti G, Sánchez-lópez CM, Andres A, Santonocito R, Campanella C, Cappello F, Marcilla A. Molecular Profile Study of Extracellular Vesicles for the Identification of Useful Small “Hit” in Cancer Diagnosis. Applied Sciences 2021; 11:10787. [DOI: 10.3390/app112210787] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Tumor-secreted extracellular vesicles (EVs) are the main mediators of cell-cell communication, permitting cells to exchange proteins, lipids, and metabolites in varying physiological and pathological conditions. They contain signature tumor-derived molecules that reflect the intracellular status of their cell of origin. Recent studies have shown that tumor cell-derived EVs can aid in cancer metastasis through the modulation of the tumor microenvironment, suppression of the immune system, pre-metastatic niche formation, and subsequent metastasis. EVs can easily be isolated from a variety of biological fluids, and their content makes them useful biomarkers for the diagnosis, prognosis, monitorization of cancer progression, and response to treatment. This review aims to explore the biomarkers of cancer cell-derived EVs obtained from liquid biopsies, in order to understand cancer progression and metastatic evolution for early diagnosis and precision therapy.
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16
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Han Y, Zhou W, Tang Y, Shi W, Shao Y, Ren P, Zhang J, Xiao G, Sun H, Liu G. Microplastics aggravate the bioaccumulation of three veterinary antibiotics in the thick shell mussel Mytilus coruscus and induce synergistic immunotoxic effects. Sci Total Environ 2021; 770:145273. [PMID: 33513513 DOI: 10.1016/j.scitotenv.2021.145273] [Citation(s) in RCA: 62] [Impact Index Per Article: 20.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/22/2020] [Revised: 01/02/2021] [Accepted: 01/14/2021] [Indexed: 06/12/2023]
Abstract
Marine bivalves living in pollution-prone coastal areas may be simultaneously coexposed to veterinary antibiotic residuals and microplastics (MPs). However, the synergistic effects of these two types of emergent pollutants have not been fully elucidated in mussel species. Therefore, the immunotoxic effects of the three representative antibiotics, oxytetracycline (OTC, 270 ng/L), florfenicol (FLO, 42 ng/L), and sulfamethoxazole (SMX, 140 ng/L), with and without the copresence of polystyrene MPs (0.26 mg/L, dimeter: 500 nm), were investigated in the thick shell mussel. Our data showed that the immunity was significantly hampered by exposure to the pollutants and MP-antibiotic coexposure induced synergistic immunotoxicity. For instance, compared to those treated with antibiotics (OTC, FLO, and SMX) alone, mussels coexposed to antibiotic and MPs had significantly lower phagocytic rate (further decline by approximately 28.80%, 34.21%, and 11.22%, respectively) and total hemocyte count (further reduced by approximately 37.45%, 61.67%, and 46.32%, respectively). Exposure to the pollutants tested also led to inductions in intracellular reactive oxygen species (ROS), decreases in the F-actin cytoskeleton, declines in the cell viability of hemocytes, and downregulation of cytoskeleton- and immune-related genes. In addition, mussels coexposed to antibiotic-MP accumulated significantly greater amounts of antibiotics, which may partially explain the synergic immunotoxic effect detected. Exposure to pollutants tested also led to suppression in the activity of glutathione-S-transferase (GST) and downregulation of detoxification-related genes whereas induction in the level of lipid peroxidation (indicated by MDA content) in gills, which may facilitate the entry whereas constrain the exclusion of antibiotics and therefore result in an elevation in accumulation of antibiotics.
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Affiliation(s)
- Yu Han
- College of Animal Sciences, Zhejiang University, Hangzhou 310058, China
| | - Weishang Zhou
- College of Animal Sciences, Zhejiang University, Hangzhou 310058, China
| | - Yu Tang
- College of Animal Sciences, Zhejiang University, Hangzhou 310058, China
| | - Wei Shi
- College of Animal Sciences, Zhejiang University, Hangzhou 310058, China
| | - Yanqing Shao
- Zhejiang Mariculture Research Institute, Wenzhou, 325005, China
| | - Peng Ren
- Zhejiang Mariculture Research Institute, Wenzhou, 325005, China
| | - Jiongming Zhang
- Zhejiang Mariculture Research Institute, Wenzhou, 325005, China
| | - Guoqiang Xiao
- Zhejiang Mariculture Research Institute, Wenzhou, 325005, China
| | - Hongxiang Sun
- College of Animal Sciences, Zhejiang University, Hangzhou 310058, China
| | - Guangxu Liu
- College of Animal Sciences, Zhejiang University, Hangzhou 310058, China.
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17
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Calero-Cuenca FJ, Osorio DS, Carvalho-Marques S, Sridhara SC, Oliveira LM, Jiao Y, Diaz J, Janota CS, Cadot B, Gomes ER. Ctdnep1 and Eps8L2 regulate dorsal actin cables for nuclear positioning during cell migration. Curr Biol 2021; 31:1521-1530.e8. [PMID: 33567288 PMCID: PMC8043254 DOI: 10.1016/j.cub.2021.01.007] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2019] [Revised: 11/12/2020] [Accepted: 01/06/2021] [Indexed: 11/30/2022]
Abstract
Cells actively position their nuclei within the cytoplasm for multiple cellular and physiological functions.1, 2, 3 Consequently, nuclear mispositioning is usually associated with cell dysfunction and disease, from muscular disorders to cancer metastasis.4, 5, 6, 7 Different cell types position their nuclei away from the leading edge during cell migration.8, 9, 10, 11 In migrating fibroblasts, nuclear positioning is driven by an actin retrograde flow originated at the leading edge that drives dorsal actin cables away from the leading edge. The dorsal actin cables connect to the nuclear envelope by the linker of nucleoskeleton and cytoskeleton (LINC) complex on transmembrane actin-associated nuclear (TAN) lines.12, 13, 14 Dorsal actin cables are required for the formation of TAN lines. How dorsal actin cables are organized to promote TAN lines formation is unknown. Here, we report a role for Ctdnep1/Dullard, a nuclear envelope phosphatase,15, 16, 17, 18, 19, 20, 21, 22 and the actin regulator Eps8L223, 24, 25 on nuclear positioning and cell migration. We demonstrate that Ctdnep1 and Eps8L2 directly interact, and this interaction is important for nuclear positioning and cell migration. We also show that Ctdnep1 and Eps8L2 are involved in the formation and thickness of dorsal actin cables required for TAN lines engagement during nuclear movement. We propose that Ctdnep1-Eps8L2 interaction regulates dorsal actin cables for nuclear movement during cell migration. Ctdnep1 and Eps8L2 are required for nuclear positioning and TAN lines formation Ctdnep1 directly interacts with Eps8L2 for nuclear movement and cell migration Ctdnep1-Eps8L2 interaction regulates dorsal actin organization
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Affiliation(s)
- Francisco J Calero-Cuenca
- Instituto de Medicina Molecular João Lobo Antunes, Faculdade de Medicina da Universidade de Lisboa, Avenida Professor Egas Moniz, 1649-028 Lisboa, Portugal
| | - Daniel S Osorio
- Center for Research in Myology, INSERM U974, CNRS FRE3617, Université Pierre et Marie Curie, Sorbonne Universités, GH Pitié Salpêtrière, 75013 Paris, France
| | - Sofia Carvalho-Marques
- Instituto de Medicina Molecular João Lobo Antunes, Faculdade de Medicina da Universidade de Lisboa, Avenida Professor Egas Moniz, 1649-028 Lisboa, Portugal
| | - Sreerama Chaitanya Sridhara
- Instituto de Medicina Molecular João Lobo Antunes, Faculdade de Medicina da Universidade de Lisboa, Avenida Professor Egas Moniz, 1649-028 Lisboa, Portugal
| | - Luis M Oliveira
- Instituto de Medicina Molecular João Lobo Antunes, Faculdade de Medicina da Universidade de Lisboa, Avenida Professor Egas Moniz, 1649-028 Lisboa, Portugal
| | - Yue Jiao
- Center for Research in Myology, INSERM U974, CNRS FRE3617, Université Pierre et Marie Curie, Sorbonne Universités, GH Pitié Salpêtrière, 75013 Paris, France
| | - Jheimmy Diaz
- Center for Research in Myology, INSERM U974, CNRS FRE3617, Université Pierre et Marie Curie, Sorbonne Universités, GH Pitié Salpêtrière, 75013 Paris, France
| | - Cátia S Janota
- Instituto de Medicina Molecular João Lobo Antunes, Faculdade de Medicina da Universidade de Lisboa, Avenida Professor Egas Moniz, 1649-028 Lisboa, Portugal
| | - Bruno Cadot
- Center for Research in Myology, INSERM U974, CNRS FRE3617, Université Pierre et Marie Curie, Sorbonne Universités, GH Pitié Salpêtrière, 75013 Paris, France
| | - Edgar R Gomes
- Instituto de Medicina Molecular João Lobo Antunes, Faculdade de Medicina da Universidade de Lisboa, Avenida Professor Egas Moniz, 1649-028 Lisboa, Portugal; Center for Research in Myology, INSERM U974, CNRS FRE3617, Université Pierre et Marie Curie, Sorbonne Universités, GH Pitié Salpêtrière, 75013 Paris, France; Instituto de Histologia e Biologia do Desenvolvimento, Faculdade de Medicina, Universidade de Lisboa, Avenida Professor Egas Moniz, 1649-028 Lisboa, Portugal.
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18
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Carlton AJ, Halford J, Underhill A, Jeng J, Avenarius MR, Gilbert ML, Ceriani F, Ebisine K, Brown SDM, Bowl MR, Barr‐Gillespie PG, Marcotti W. Loss of Baiap2l2 destabilizes the transducing stereocilia of cochlear hair cells and leads to deafness. J Physiol 2021; 599:1173-1198. [PMID: 33151556 PMCID: PMC7898316 DOI: 10.1113/jp280670] [Citation(s) in RCA: 25] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2020] [Accepted: 10/27/2020] [Indexed: 12/17/2022] Open
Abstract
KEY POINTS Mechanoelectrical transduction at auditory hair cells requires highly specialized stereociliary bundles that project from their apical surface, forming a characteristic graded 'staircase' structure. The morphogenesis and maintenance of these stereociliary bundles is a tightly regulated process requiring the involvement of several actin-binding proteins, many of which are still unidentified. We identify a new stereociliary protein, the I-BAR protein BAIAP2L2, which localizes to the tips of the shorter transducing stereocilia in both inner and outer hair cells (IHCs and OHCs). We find that Baiap2l2 deficient mice lose their second and third rows of stereocilia, their mechanoelectrical transducer current, and develop progressive hearing loss, becoming deaf by 8 months of age. We demonstrate that BAIAP2L2 localization to stereocilia tips is dependent on the motor protein MYO15A and its cargo EPS8. We propose that BAIAP2L2 is a new key protein required for the maintenance of the transducing stereocilia in mature cochlear hair cells. ABSTRACT The transduction of sound waves into electrical signals depends upon mechanosensitive stereociliary bundles that project from the apical surface of hair cells within the cochlea. The height and width of these actin-based stereocilia is tightly regulated throughout life to establish and maintain their characteristic staircase-like structure, which is essential for normal mechanoelectrical transduction. Here, we show that BAIAP2L2, a member of the I-BAR protein family, is a newly identified hair bundle protein that is localized to the tips of the shorter rows of transducing stereocilia in mouse cochlear hair cells. BAIAP2L2 was detected by immunohistochemistry from postnatal day 2.5 (P2.5) throughout adulthood. In Baiap2l2 deficient mice, outer hair cells (OHCs), but not inner hair cells (IHCs), began to lose their third row of stereocilia and showed a reduction in the size of the mechanoelectrical transducer current from just after P9. Over the following post-hearing weeks, the ordered staircase structure of the bundle progressively deteriorates, such that, by 8 months of age, both OHCs and IHCs of Baiap2l2 deficient mice have lost most of the second and third rows of stereocilia and become deaf. We also found that BAIAP2L2 interacts with other key stereociliary proteins involved in normal hair bundle morphogenesis, such as CDC42, RAC1, EPS8 and ESPNL. Furthermore, we show that BAIAP2L2 localization to the stereocilia tips depends on the motor protein MYO15A and its cargo EPS8. We propose that BAIAP2L2 is key to maintenance of the normal actin structure of the transducing stereocilia in mature mouse cochlear hair cells.
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Affiliation(s)
- Adam J. Carlton
- Department of Biomedical ScienceUniversity of SheffieldSheffieldUK
- Neuroscience InstituteUniversity of SheffieldSheffieldUK
| | - Julia Halford
- Oregon Hearing Research Center & Vollum InstituteOregon Health & Science UniversityPortlandORUSA
| | - Anna Underhill
- Department of Biomedical ScienceUniversity of SheffieldSheffieldUK
- Neuroscience InstituteUniversity of SheffieldSheffieldUK
| | - Jing‐Yi Jeng
- Department of Biomedical ScienceUniversity of SheffieldSheffieldUK
- Neuroscience InstituteUniversity of SheffieldSheffieldUK
| | - Matthew R. Avenarius
- Oregon Hearing Research Center & Vollum InstituteOregon Health & Science UniversityPortlandORUSA
- Present address: Department of Pathology Wexner Medical CenterThe Ohio State UniversityColumbusOHUSA
| | - Merle L. Gilbert
- Oregon Hearing Research Center & Vollum InstituteOregon Health & Science UniversityPortlandORUSA
- Present address: US Army Medical Department Activity‐KoreaCamp HumphreysRepublic of Korea
| | - Federico Ceriani
- Department of Biomedical ScienceUniversity of SheffieldSheffieldUK
- Neuroscience InstituteUniversity of SheffieldSheffieldUK
| | | | - Steve D. M. Brown
- Mammalian Genetics UnitMRC Harwell InstituteHarwell CampusOxfordshireUK
| | - Michael R. Bowl
- Mammalian Genetics UnitMRC Harwell InstituteHarwell CampusOxfordshireUK
- Present address: UCL Ear InstituteUniversity College LondonLondonUK
| | - Peter G. Barr‐Gillespie
- Oregon Hearing Research Center & Vollum InstituteOregon Health & Science UniversityPortlandORUSA
- Oregon Hearing Research CenterOregon Health & Science UniversityPortlandORUSA
| | - Walter Marcotti
- Department of Biomedical ScienceUniversity of SheffieldSheffieldUK
- Neuroscience InstituteUniversity of SheffieldSheffieldUK
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19
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Lin L, Shi Y, Wang M, Wang C, Lu Q, Zhu J, Zhang R. Phase separation-mediated condensation of Whirlin-Myo15-Eps8 stereocilia tip complex. Cell Rep 2021; 34:108770. [PMID: 33626355 DOI: 10.1016/j.celrep.2021.108770] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2020] [Revised: 01/05/2021] [Accepted: 01/28/2021] [Indexed: 12/19/2022] Open
Abstract
Stereocilia, the mechanosensory organelles on the apical surface of hair cells, are necessary to detect sound and carry out mechano-electrical transduction. An electron-dense matrix is located at the distal tips of stereocilia and plays crucial roles in the regulation of stereocilia morphology. Mutations of the components in this tip complex density (TCD) have been associated with profound deafness. However, the mechanism underlying the formation of the TCD is largely unknown. Here, we discover that the specific multivalent interactions among the Whirlin-myosin 15 (Myo15)-Eps8 complex lead to the formation of the TCD-like condensates through liquid-liquid phase separation. The reconstituted TCD-like condensates effectively promote actin bundling. A deafness-associated mutation of Myo15 interferes with the condensates formation and consequently impairs actin bundling. Therefore, our study not only suggests that the TCD in hair cell stereocilia may form via phase separation but it also provides important clues for the possible mechanism underlying hearing loss.
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Affiliation(s)
- Lin Lin
- State Key Laboratory of Molecular Biology, Shanghai Institute of Biochemistry and Cell Biology, Center for Excellence in Molecular Cell Science, Chinese Academy of Sciences, Shanghai 200031, China; Bio-X Institutes, Key Laboratory for the Genetics of Developmental and Neuropsychiatric Disorders, Ministry of Education, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Yingdong Shi
- Ministry of Education Key Laboratory for Membrane-less Organelles & Cellular Dynamics, Hefei National Laboratory for Physical Sciences at the Microscale, School of Life Sciences, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei 230026, China
| | - Mengli Wang
- Ministry of Education Key Laboratory for Membrane-less Organelles & Cellular Dynamics, Hefei National Laboratory for Physical Sciences at the Microscale, School of Life Sciences, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei 230026, China
| | - Chao Wang
- Ministry of Education Key Laboratory for Membrane-less Organelles & Cellular Dynamics, Hefei National Laboratory for Physical Sciences at the Microscale, School of Life Sciences, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei 230026, China
| | - Qing Lu
- Bio-X Institutes, Key Laboratory for the Genetics of Developmental and Neuropsychiatric Disorders, Ministry of Education, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Jinwei Zhu
- State Key Laboratory of Molecular Biology, Shanghai Institute of Biochemistry and Cell Biology, Center for Excellence in Molecular Cell Science, Chinese Academy of Sciences, Shanghai 200031, China; Bio-X Institutes, Key Laboratory for the Genetics of Developmental and Neuropsychiatric Disorders, Ministry of Education, Shanghai Jiao Tong University, Shanghai 200240, China.
| | - Rongguang Zhang
- State Key Laboratory of Molecular Biology, Shanghai Institute of Biochemistry and Cell Biology, Center for Excellence in Molecular Cell Science, Chinese Academy of Sciences, Shanghai 200031, China.
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20
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Luo K, Zhang L, Liao Y, Zhou H, Yang H, Luo M, Qing C. Effects and mechanisms of Eps8 on the biological behaviour of malignant tumours (Review). Oncol Rep 2021; 45:824-834. [PMID: 33432368 PMCID: PMC7859916 DOI: 10.3892/or.2021.7927] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2020] [Accepted: 12/09/2020] [Indexed: 12/31/2022] Open
Abstract
Epidermal growth factor receptor pathway substrate 8 (Eps8) was initially identified as the substrate for the kinase activity of EGFR, improving the responsiveness of EGF, which is involved in cell mitosis, differentiation and other physiological functions. Numerous studies over the last decade have demonstrated that Eps8 is overexpressed in most ubiquitous malignant tumours and subsequently binds with its receptor to activate multiple signalling pathways. Eps8 not only participates in the regulation of malignant phenotypes, such as tumour proliferation, invasion, metastasis and drug resistance, but is also related to the clinicopathological characteristics and prognosis of patients. Therefore, Eps8 is a potential tumour diagnosis and prognostic biomarker and even a therapeutic target. This review aimed to describe the structural characteristics, role and related molecular mechanism of Eps8 in malignant tumours. In addition, the prospect of Eps8 as a target for cancer therapy is examined.
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Affiliation(s)
- Kaili Luo
- School of Pharmaceutical Sciences and Yunnan Key Laboratory of Pharmacology for Natural Products, Kunming Medical University, Kunming, Yunnan 650500, P.R. China
| | - Lei Zhang
- Department of Gynecology, Yunnan Tumor Hospital and The Third Affiliated Hospital of Kunming Medical University; Kunming, Yunnan 650118, P.R. China
| | - Yuan Liao
- School of Pharmaceutical Sciences and Yunnan Key Laboratory of Pharmacology for Natural Products, Kunming Medical University, Kunming, Yunnan 650500, P.R. China
| | - Hongyu Zhou
- School of Pharmaceutical Sciences and Yunnan Key Laboratory of Pharmacology for Natural Products, Kunming Medical University, Kunming, Yunnan 650500, P.R. China
| | - Hongying Yang
- Department of Gynecology, Yunnan Tumor Hospital and The Third Affiliated Hospital of Kunming Medical University; Kunming, Yunnan 650118, P.R. China
| | - Min Luo
- School of Pharmaceutical Sciences and Yunnan Key Laboratory of Pharmacology for Natural Products, Kunming Medical University, Kunming, Yunnan 650500, P.R. China
| | - Chen Qing
- School of Pharmaceutical Sciences and Yunnan Key Laboratory of Pharmacology for Natural Products, Kunming Medical University, Kunming, Yunnan 650500, P.R. China
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21
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King LE, Zhang HH, Gould CM, Thomas DW, Whitehead LW, Simpson KJ, Burgess AW, Faux MC. Genes regulating membrane-associated E-cadherin and proliferation in adenomatous polyposis coli mutant colon cancer cells: High content siRNA screen. PLoS One 2020; 15:e0240746. [PMID: 33057364 PMCID: PMC7561197 DOI: 10.1371/journal.pone.0240746] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2020] [Accepted: 10/01/2020] [Indexed: 01/17/2023] Open
Abstract
Truncating mutations in the tumour suppressor gene APC occur frequently in colorectal cancers and result in the deregulation of Wnt signalling as well as changes in cell-cell adhesion. Using quantitative imaging based on the detection of membrane-associated E-cadherin, we undertook a protein coding genome-wide siRNA screen to identify genes that regulate cell surface E-cadherin in the APC-defective colorectal cancer cell line SW480. We identified a diverse set of regulators of E-cadherin that offer new insights into the regulation of cell-cell adhesion, junction formation and genes that regulate proliferation or survival of SW480 cells. Among the genes whose depletion promotes membrane-associated E-cadherin, we identified ZEB1, the microRNA200 family, and proteins such as a ubiquitin ligase UBE2E3, CDK8, sorting nexin 27 (SNX27) and the matrix metalloproteinases, MMP14 and MMP19. The screen also identified 167 proteins required for maintaining E-cadherin at cell-cell adherens junctions, including known junctional proteins, CTNND1 and CTNNA1, as well as signalling enzymes, DUSP4 and MARK2, and transcription factors, TEAD3, RUNX2 and TRAM2. A better understanding of the post-translational regulation of E-cadherin provides new opportunities for restoring cell-cell adhesion in APC-defective cells.
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Affiliation(s)
- Lauren E. King
- Walter and Eliza Hall Institute of Medical Research, Parkville, VIC, Australia
- Department of Medical Biology, University of Melbourne, Parkville, VIC, Australia
| | - Hui-Hua Zhang
- Walter and Eliza Hall Institute of Medical Research, Parkville, VIC, Australia
- Department of Medical Biology, University of Melbourne, Parkville, VIC, Australia
| | - Cathryn M. Gould
- Victorian Centre for Functional Genomics, Peter MacCallum Cancer Centre, Melbourne, VIC, Australia
| | - Daniel W. Thomas
- Victorian Centre for Functional Genomics, Peter MacCallum Cancer Centre, Melbourne, VIC, Australia
| | - Lachlan W. Whitehead
- Walter and Eliza Hall Institute of Medical Research, Parkville, VIC, Australia
- Department of Medical Biology, University of Melbourne, Parkville, VIC, Australia
| | - Kaylene J. Simpson
- Victorian Centre for Functional Genomics, Peter MacCallum Cancer Centre, Melbourne, VIC, Australia
- The Sir Peter MacCallum Department of Oncology, University of Melbourne, Parkville, VIC, Australia
| | - Antony W. Burgess
- Walter and Eliza Hall Institute of Medical Research, Parkville, VIC, Australia
- Department of Medical Biology, University of Melbourne, Parkville, VIC, Australia
- Department of Surgery, RMH, University of Melbourne, Parkville, VIC, Australia
- * E-mail: (MCF); (AWB)
| | - Maree C. Faux
- Walter and Eliza Hall Institute of Medical Research, Parkville, VIC, Australia
- Department of Medical Biology, University of Melbourne, Parkville, VIC, Australia
- * E-mail: (MCF); (AWB)
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Ouyang X, Ahmad I, Johnson MS, Redmann M, Craver J, Wani WY, Benavides GA, Chacko B, Li P, Young M, Jegga AG, Darley-Usmar V, Zhang J. Nuclear receptor binding factor 2 (NRBF2) is required for learning and memory. J Transl Med 2020; 100:1238-51. [PMID: 32350405 DOI: 10.1038/s41374-020-0433-4] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2019] [Revised: 04/13/2020] [Accepted: 04/14/2020] [Indexed: 01/13/2023] Open
Abstract
The mechanisms which underlie defects in learning and memory are a major area of focus with the increasing incidence of Alzheimer's disease in the aging population. The complex genetically-controlled, age-, and environmentally-dependent onset and progression of the cognitive deficits and neuronal pathology call for better understanding of the fundamental biology of the nervous system function. In this study, we focus on nuclear receptor binding factor-2 (NRBF2) which modulates the transcriptional activities of retinoic acid receptor α and retinoid X receptor α, and the autophagic activities of the BECN1-VPS34 complex. Since both transcriptional regulation and autophagic function are important in supporting neuronal function, we hypothesized that NRBF2 deficiency may lead to cognitive deficits. To test this, we developed a new mouse model with nervous system-specific knockout of Nrbf2. In a series of behavioral assessment, we demonstrate that NRBF2 knockout in the nervous system results in profound learning and memory deficits. Interestingly, we did not find deficits in autophagic flux in primary neurons and the autophagy deficits were minimal in the brain. In contrast, RNAseq analyses have identified altered expression of genes that have been shown to impact neuronal function. The observation that NRBF2 is involved in learning and memory suggests a new mechanism regulating cognition involving the role of this protein in regulating networks related to the function of retinoic acid receptors, protein folding, and quality control.
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Chen B, Pan Y, Xu X, Wu F, Zheng X, Chen SY, Zhao YT, Huang Z, Cheng SH, Liu JX, Wang WH, Li YX. Inhibition of EPS8L3 suppresses liver cancer progression and enhances efficacy of sorafenib treatment. Biomed Pharmacother 2020; 128:110284. [PMID: 32480224 DOI: 10.1016/j.biopha.2020.110284] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2020] [Revised: 05/10/2020] [Accepted: 05/16/2020] [Indexed: 01/08/2023] Open
Abstract
BACKGROUND Liver cancer is a devastating disease that has second highest cancer mortality rate worldwide. Although surgical resection or liver transplantation sometimes cures early stage liver cancer, few therapeutic options are available for advanced-stage liver cancer, highlighting the importance of a better understanding of the disease to find novel therapeutic targets. METHODS Firstly, clinical features of EPS8L3 on liver cancer RNA-seq dataset of The Cancer Genome Atlas (TCGA) database was analyzed, including gene expression levels in tumor tissues in comparison with the normal tissues as well as the patients' OS. To confirm the candidate genes, we used short hairpin RNA (shRNA) to knock down the gene and quantify the cell proliferation, apoptosis, and migration. Then micro-array analysis was did to investigate the intracellular mechanisms of EPS8L3. Moreover, to gain further insights into the translational value of the findings, we treated the liver cancer cells with Sorafenib after knocking down the candidate gene, in order to interrogate the combinatorial inhibitory effects on cell metabolism. RESULTS As a result, by comparing gene expression profiles of normal liver and cancerous tissues, we find that epidermal growth factor receptor kinase substrate 8-like protein 3 (EPS8L3), a gene with unknown function, is upregulated in liver cancer, and is associated with poor prognosis. Further gene set analyses on liver cancer cells revealed that EPS8L3 is pertinent to cell division and proliferation. Indeed, knocking down EPS8L3 inhibits cell proliferation and migration, and triggers apoptosis in vitro. Additionally, when inoculated into mice, EPS8L3 knocked down cells exhibit slower growth rate. Moreover, EPS8L3 expression can substantially increase the efficacy of low dosage of Sorafenib treatment. Furthermore, the results of immunohistochemical staining of 90 paired liver cancer and adjacent normal samples demonstrated high expression of EPS8L3 yields poor prognosis in Chinese liver cancer patients. CONCLUSIONS Collectively, our results suggest that EPS8L3 has pivotal oncogenic functions in liver cancer and we propose that EPS8L3 could be a potential therapeutic target to treat liver cancer.
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Affiliation(s)
- Bo Chen
- State Key Laboratory of Molecular Oncology and Department of Radiation Oncology, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences (CAMS) and Peking Union Medical College (PUMC), Beijing, PR China
| | - Yan Pan
- Key Laboratory of Radiological Protection and Nuclear Emergency, National Institute for Radiological Protection, Chinese Center for Disease Control and Prevention, Beijing, PR China
| | - Xin Xu
- State Key Laboratory of Molecular Oncology and Department of Radiation Oncology, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences (CAMS) and Peking Union Medical College (PUMC), Beijing, PR China
| | - Fan Wu
- Department of Hepatobiliary Surgery, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences (CAMS) and Peking Union Medical College (PUMC), Beijing, PR China
| | - Xuan Zheng
- State Key Laboratory of Molecular Oncology and Department of Radiation Oncology, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences (CAMS) and Peking Union Medical College (PUMC), Beijing, PR China
| | - Si-Ye Chen
- State Key Laboratory of Molecular Oncology and Department of Radiation Oncology, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences (CAMS) and Peking Union Medical College (PUMC), Beijing, PR China
| | - Yu-Ting Zhao
- State Key Laboratory of Molecular Oncology and Department of Radiation Oncology, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences (CAMS) and Peking Union Medical College (PUMC), Beijing, PR China
| | - Zhou Huang
- State Key Laboratory of Molecular Oncology and Department of Radiation Oncology, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences (CAMS) and Peking Union Medical College (PUMC), Beijing, PR China
| | - Shu-Hui Cheng
- State Key Laboratory of Molecular Oncology and Department of Radiation Oncology, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences (CAMS) and Peking Union Medical College (PUMC), Beijing, PR China
| | - Jian-Xiang Liu
- Key Laboratory of Radiological Protection and Nuclear Emergency, National Institute for Radiological Protection, Chinese Center for Disease Control and Prevention, Beijing, PR China
| | - Wei-Hu Wang
- Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education/Beijing), Department of Radiation Oncology, Peking University Cancer Hospital & Institute, Beijing, PR China.
| | - Ye-Xiong Li
- State Key Laboratory of Molecular Oncology and Department of Radiation Oncology, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences (CAMS) and Peking Union Medical College (PUMC), Beijing, PR China.
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Xuan Z, Zhao L, Li Z, Song W, Chen J, Chen J, Chen H, Song G, Jin C, Zhou M, Xie H, Zheng S, Song P. EPS8L3 promotes hepatocellular carcinoma proliferation and metastasis by modulating EGFR dimerization and internalization. Am J Cancer Res 2020; 10:60-77. [PMID: 32064153 PMCID: PMC7017737] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2019] [Accepted: 12/06/2019] [Indexed: 06/10/2023] Open
Abstract
As a member of epidermal growth factor receptor (EGFR) kinase substrate 8 (EPS8) family, the role of EPS8 like 3 protein (EPS8L3) has not been well studied in malignancies. However, EPS8 has been reported to be associated with prognosis and functions in several kinds of cancers. Hence, whether EPS8L3 plays similar roles in the tumorigenesis of human cancers, especially in hepatocellular carcinoma (HCC), is still needed to be further explored. In this study, we revealed that EPS8L3 was overexpressed in HCC tissues compared with adjacent non-tumor tissues, and was associated with a poor clinical prognosis. Both in vitro and in vivo experiments showed that EPS8L3 could promote the proliferative ability by downregulating p21/p27 expression, and promote the migratory and invasive abilities by upregulating matrix metalloproteinase-2 expression. Furthermore, we demonstrated that EPS8L3 could affect the activation of the EGFR-ERK pathway by modulating EGFR dimerization and internalization, which may not depend on the formation of EPS8L3-SOS1-ABI1 complex. Taken together, our study showed that EPS8L3 plays a pivotal role in the tumorigenesis and progression of HCC, and it might be a potential therapeutic target for HCC.
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Affiliation(s)
- Zefeng Xuan
- Division of Hepatobiliary and Pancreatic Surgery, Department of Surgery, First Affiliated Hospital, School of Medicine, Zhejiang UniversityHangzhou 310003, China
- NHCPRC Key Laboratory of Combined Multi-organ TransplantationHangzhou 310003, Zhejiang Province, China
- Key Laboratory of The Diagnosis and Treatment of Organ Transplantation, CAMSHangzhou 310003, Zhejiang Province, China
- Key Laboratory of Organ TransplantationHangzhou 310003, Zhejiang Province, China
- Collaborative Innovation Center for Diagnosis Treatment of Infectious DiseasesHangzhou 310003, Zhejiang Province, China
| | - Long Zhao
- Division of Hepatobiliary and Pancreatic Surgery, Department of Surgery, First Affiliated Hospital, School of Medicine, Zhejiang UniversityHangzhou 310003, China
- NHCPRC Key Laboratory of Combined Multi-organ TransplantationHangzhou 310003, Zhejiang Province, China
- Key Laboratory of The Diagnosis and Treatment of Organ Transplantation, CAMSHangzhou 310003, Zhejiang Province, China
- Key Laboratory of Organ TransplantationHangzhou 310003, Zhejiang Province, China
- Collaborative Innovation Center for Diagnosis Treatment of Infectious DiseasesHangzhou 310003, Zhejiang Province, China
| | - Zequn Li
- Division of Hepatobiliary and Pancreatic Surgery, Department of Surgery, First Affiliated Hospital, School of Medicine, Zhejiang UniversityHangzhou 310003, China
- NHCPRC Key Laboratory of Combined Multi-organ TransplantationHangzhou 310003, Zhejiang Province, China
- Key Laboratory of The Diagnosis and Treatment of Organ Transplantation, CAMSHangzhou 310003, Zhejiang Province, China
- Key Laboratory of Organ TransplantationHangzhou 310003, Zhejiang Province, China
- Collaborative Innovation Center for Diagnosis Treatment of Infectious DiseasesHangzhou 310003, Zhejiang Province, China
| | - Wenfeng Song
- Division of Hepatobiliary and Pancreatic Surgery, Department of Surgery, First Affiliated Hospital, School of Medicine, Zhejiang UniversityHangzhou 310003, China
- NHCPRC Key Laboratory of Combined Multi-organ TransplantationHangzhou 310003, Zhejiang Province, China
- Key Laboratory of The Diagnosis and Treatment of Organ Transplantation, CAMSHangzhou 310003, Zhejiang Province, China
- Key Laboratory of Organ TransplantationHangzhou 310003, Zhejiang Province, China
- Collaborative Innovation Center for Diagnosis Treatment of Infectious DiseasesHangzhou 310003, Zhejiang Province, China
| | - Jun Chen
- Division of Hepatobiliary and Pancreatic Surgery, Department of Surgery, First Affiliated Hospital, School of Medicine, Zhejiang UniversityHangzhou 310003, China
- NHCPRC Key Laboratory of Combined Multi-organ TransplantationHangzhou 310003, Zhejiang Province, China
- Key Laboratory of The Diagnosis and Treatment of Organ Transplantation, CAMSHangzhou 310003, Zhejiang Province, China
- Key Laboratory of Organ TransplantationHangzhou 310003, Zhejiang Province, China
- Collaborative Innovation Center for Diagnosis Treatment of Infectious DiseasesHangzhou 310003, Zhejiang Province, China
| | - Jian Chen
- Division of Hepatobiliary and Pancreatic Surgery, Department of Surgery, First Affiliated Hospital, School of Medicine, Zhejiang UniversityHangzhou 310003, China
- NHCPRC Key Laboratory of Combined Multi-organ TransplantationHangzhou 310003, Zhejiang Province, China
- Key Laboratory of The Diagnosis and Treatment of Organ Transplantation, CAMSHangzhou 310003, Zhejiang Province, China
- Key Laboratory of Organ TransplantationHangzhou 310003, Zhejiang Province, China
- Collaborative Innovation Center for Diagnosis Treatment of Infectious DiseasesHangzhou 310003, Zhejiang Province, China
| | - Hao Chen
- Division of Hepatobiliary and Pancreatic Surgery, Department of Surgery, First Affiliated Hospital, School of Medicine, Zhejiang UniversityHangzhou 310003, China
- NHCPRC Key Laboratory of Combined Multi-organ TransplantationHangzhou 310003, Zhejiang Province, China
- Key Laboratory of The Diagnosis and Treatment of Organ Transplantation, CAMSHangzhou 310003, Zhejiang Province, China
- Key Laboratory of Organ TransplantationHangzhou 310003, Zhejiang Province, China
- Collaborative Innovation Center for Diagnosis Treatment of Infectious DiseasesHangzhou 310003, Zhejiang Province, China
| | - Guangyuan Song
- Division of Hepatobiliary and Pancreatic Surgery, Department of Surgery, First Affiliated Hospital, School of Medicine, Zhejiang UniversityHangzhou 310003, China
- NHCPRC Key Laboratory of Combined Multi-organ TransplantationHangzhou 310003, Zhejiang Province, China
- Key Laboratory of The Diagnosis and Treatment of Organ Transplantation, CAMSHangzhou 310003, Zhejiang Province, China
- Key Laboratory of Organ TransplantationHangzhou 310003, Zhejiang Province, China
- Collaborative Innovation Center for Diagnosis Treatment of Infectious DiseasesHangzhou 310003, Zhejiang Province, China
| | - Cheng Jin
- Division of Hepatobiliary and Pancreatic Surgery, Department of Surgery, First Affiliated Hospital, School of Medicine, Zhejiang UniversityHangzhou 310003, China
- NHCPRC Key Laboratory of Combined Multi-organ TransplantationHangzhou 310003, Zhejiang Province, China
- Key Laboratory of The Diagnosis and Treatment of Organ Transplantation, CAMSHangzhou 310003, Zhejiang Province, China
- Key Laboratory of Organ TransplantationHangzhou 310003, Zhejiang Province, China
- Collaborative Innovation Center for Diagnosis Treatment of Infectious DiseasesHangzhou 310003, Zhejiang Province, China
| | - Mengqiao Zhou
- Division of Hepatobiliary and Pancreatic Surgery, Department of Surgery, First Affiliated Hospital, School of Medicine, Zhejiang UniversityHangzhou 310003, China
- NHCPRC Key Laboratory of Combined Multi-organ TransplantationHangzhou 310003, Zhejiang Province, China
- Key Laboratory of The Diagnosis and Treatment of Organ Transplantation, CAMSHangzhou 310003, Zhejiang Province, China
- Key Laboratory of Organ TransplantationHangzhou 310003, Zhejiang Province, China
- Collaborative Innovation Center for Diagnosis Treatment of Infectious DiseasesHangzhou 310003, Zhejiang Province, China
| | - Haiyang Xie
- Division of Hepatobiliary and Pancreatic Surgery, Department of Surgery, First Affiliated Hospital, School of Medicine, Zhejiang UniversityHangzhou 310003, China
- NHCPRC Key Laboratory of Combined Multi-organ TransplantationHangzhou 310003, Zhejiang Province, China
- Key Laboratory of The Diagnosis and Treatment of Organ Transplantation, CAMSHangzhou 310003, Zhejiang Province, China
- Key Laboratory of Organ TransplantationHangzhou 310003, Zhejiang Province, China
- Collaborative Innovation Center for Diagnosis Treatment of Infectious DiseasesHangzhou 310003, Zhejiang Province, China
| | - Shusen Zheng
- Division of Hepatobiliary and Pancreatic Surgery, Department of Surgery, First Affiliated Hospital, School of Medicine, Zhejiang UniversityHangzhou 310003, China
- NHCPRC Key Laboratory of Combined Multi-organ TransplantationHangzhou 310003, Zhejiang Province, China
- Key Laboratory of The Diagnosis and Treatment of Organ Transplantation, CAMSHangzhou 310003, Zhejiang Province, China
- Key Laboratory of Organ TransplantationHangzhou 310003, Zhejiang Province, China
- Collaborative Innovation Center for Diagnosis Treatment of Infectious DiseasesHangzhou 310003, Zhejiang Province, China
| | - Penghong Song
- Division of Hepatobiliary and Pancreatic Surgery, Department of Surgery, First Affiliated Hospital, School of Medicine, Zhejiang UniversityHangzhou 310003, China
- NHCPRC Key Laboratory of Combined Multi-organ TransplantationHangzhou 310003, Zhejiang Province, China
- Key Laboratory of The Diagnosis and Treatment of Organ Transplantation, CAMSHangzhou 310003, Zhejiang Province, China
- Key Laboratory of Organ TransplantationHangzhou 310003, Zhejiang Province, China
- Collaborative Innovation Center for Diagnosis Treatment of Infectious DiseasesHangzhou 310003, Zhejiang Province, China
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Zhang Y, Zheng L, Le M, Nakano Y, Chan B, Huang Y, Torbaty PM, Kohwi Y, Marcucio R, Habelitz S, Den Besten PK, Kohwi-Shigematsu T. SATB1 establishes ameloblast cell polarity and regulates directional amelogenin secretion for enamel formation. BMC Biol 2019; 17:104. [PMID: 31830989 PMCID: PMC6909472 DOI: 10.1186/s12915-019-0722-9] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2019] [Accepted: 11/13/2019] [Indexed: 01/07/2023] Open
Abstract
BACKGROUND Polarity is necessary for epithelial cells to perform distinct functions at their apical and basal surfaces. Oral epithelial cell-derived ameloblasts at secretory stage (SABs) synthesize large amounts of enamel matrix proteins (EMPs), largely amelogenins. EMPs are unidirectionally secreted into the enamel space through their apical cytoplasmic protrusions, or Tomes' processes (TPs), to guide the enamel formation. Little is known about the transcriptional regulation underlying the establishment of cell polarity and unidirectional secretion of SABs. RESULTS The higher-order chromatin architecture of eukaryotic genome plays important roles in cell- and stage-specific transcriptional programming. A genome organizer, special AT-rich sequence-binding protein 1 (SATB1), was discovered to be significantly upregulated in ameloblasts compared to oral epithelial cells using a whole-transcript microarray analysis. The Satb1-/- mice possessed deformed ameloblasts and a thin layer of hypomineralized and non-prismatic enamel. Remarkably, Satb1-/- ameloblasts at the secretory stage lost many morphological characteristics found at the apical surface of wild-type (wt) SABs, including the loss of Tomes' processes, defective inter-ameloblastic adhesion, and filamentous actin architecture. As expected, the secretory function of Satb1-/- SABs was compromised as amelogenins were largely retained in cells. We found the expression of epidermal growth factor receptor pathway substrate 8 (Eps8), a known regulator for actin filament assembly and small intestinal epithelial cytoplasmic protrusion formation, to be SATB1 dependent. In contrast to wt SABs, EPS8 could not be detected at the apical surface of Satb1-/- SABs. Eps8 expression was greatly reduced in small intestinal epithelial cells in Satb1-/- mice as well, displaying defective intestinal microvilli. CONCLUSIONS Our data show that SATB1 is essential for establishing secretory ameloblast cell polarity and for EMP secretion. In line with the deformed apical architecture, amelogenin transport to the apical secretory front and secretion into enamel space were impeded in Satb1-/- SABs resulting in a massive cytoplasmic accumulation of amelogenins and a thin layer of hypomineralized enamel. Our studies strongly suggest that SATB1-dependent Eps8 expression plays a critical role in cytoplasmic protrusion formation in both SABs and in small intestines. This study demonstrates the role of SATB1 in the regulation of amelogenesis and the potential application of SATB1 in ameloblast/enamel regeneration.
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Affiliation(s)
- Yan Zhang
- Department of Orofacial Sciences, University of California, San Francisco, USA.
| | - Liwei Zheng
- Department of Orofacial Sciences, University of California, San Francisco, USA
| | - Michael Le
- Department of Orofacial Sciences, University of California, San Francisco, USA
| | - Yukiko Nakano
- Department of Orofacial Sciences, University of California, San Francisco, USA
| | - Barry Chan
- Department of Orofacial Sciences, University of California, San Francisco, USA
| | - Yulei Huang
- Department of Orofacial Sciences, University of California, San Francisco, USA
| | | | - Yoshinori Kohwi
- Department of Orofacial Sciences, University of California, San Francisco, USA
| | - Ralph Marcucio
- Department of Orthopaedic Surgery, University of California, San Francisco, USA
| | - Stefan Habelitz
- Preventive and Restorative Dental Sciences, University of California, San Francisco, USA
| | - Pamela K Den Besten
- Department of Orofacial Sciences, University of California, San Francisco, USA
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Naz S, Friedman TB. Growth factor and receptor malfunctions associated with human genetic deafness. Clin Genet 2019; 97:138-155. [PMID: 31506927 DOI: 10.1111/cge.13641] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2019] [Revised: 08/22/2019] [Accepted: 09/03/2019] [Indexed: 12/12/2022]
Abstract
A variety of different signaling pathways are necessary for development and maintenance of the human auditory system. Normal hearing allows for the detection of soft sounds within the frequency range of 20 to 20 000 Hz, but more importantly to perceive the human voice frequency band of 250 to 6000 Hz. Loss of hearing is common, and is a clinically heterogeneous disorder that can be caused by environmental factors such as exposure to loud noise, infections and ototoxic drugs. In addition, variants of hundreds of genes have been reported to disrupt processes required for hearing. Noncoding regulatory variants and variants of additional genes necessary for hearing remain to be discovered as many individuals with inherited deafness are without a genetic diagnosis, despite the advent of whole exome sequencing. Here, we discuss in detail some of these deafness-causing variants of genes encoding a ligand or its receptor. Spotlighted in this review are three growth factor-receptor-pairs EDN3/EDNRB, HGF/MET and JAG/NOTCH, which individually are necessary for normal hearing. We also offer our perspective on unanswered questions, future challenges and potential opportunities for treatments emerging from molecular genetic and mechanistic studies of deafness due to these causes.
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Affiliation(s)
- Sadaf Naz
- School of Biological Sciences, University of the Punjab, Lahore, Pakistan
| | - Thomas B Friedman
- Laboratory of Molecular Genetics, National Institute on Deafness and Other Communication Disorders, National Institutes of Health, Bethesda, Maryland
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Kretschmer A, Zhang F, Somasekharan SP, Tse C, Leachman L, Gleave A, Li B, Asmaro I, Huang T, Kotula L, Sorensen PH, Gleave ME. Stress-induced tunneling nanotubes support treatment adaptation in prostate cancer. Sci Rep 2019; 9:7826. [PMID: 31127190 DOI: 10.1038/s41598-019-44346-5] [Citation(s) in RCA: 44] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2018] [Accepted: 05/10/2019] [Indexed: 12/12/2022] Open
Abstract
Tunneling nanotubes (TNTs) are actin-based membranous structures bridging distant cells for intercellular communication. We define roles for TNTs in stress adaptation and treatment resistance in prostate cancer (PCa). Androgen receptor (AR) blockade and metabolic stress induce TNTs, but not in normal prostatic epithelial or osteoblast cells. Co-culture assays reveal enhanced TNT formation between stressed and unstressed PCa cells as well as from stressed PCa to osteoblasts. Stress-induced chaperones clusterin and YB-1 localize within TNTs, are transported bi-directionally via TNTs and facilitate TNT formation in PI3K/AKT and Eps8-dependent manner. AR variants, induced by AR antagonism to mediate resistance to AR pathway inhibition, also enhance TNT production and rescue loss of clusterin- or YB-1-repressed TNT formation. TNT disruption sensitizes PCa to treatment-induced cell death. These data define a mechanistic network involving stress induction of chaperone and AR variants, PI3K/AKT signaling, actin remodeling and TNT-mediated intercellular communication that confer stress adaptative cell survival.
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Vélez-Ortega AC, Frolenkov GI. Building and repairing the stereocilia cytoskeleton in mammalian auditory hair cells. Hear Res 2019; 376:47-57. [PMID: 30638948 DOI: 10.1016/j.heares.2018.12.012] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/11/2018] [Revised: 12/19/2018] [Accepted: 12/28/2018] [Indexed: 10/27/2022]
Abstract
Despite all recent achievements in identification of the molecules that are essential for the structure and mechanosensory function of stereocilia bundles in the auditory hair cells of mammalian species, we still have only a rudimentary understanding of the mechanisms of stereocilia formation, maintenance, and repair. Important molecular differences distinguishing mammalian auditory hair cells from hair cells of other types and species have been recently revealed. In addition, we are beginning to solve the puzzle of the apparent life-long stability of the stereocilia bundles in these cells. New data link the stability of the cytoskeleton in the mammalian auditory stereocilia with the normal activity of mechanotransduction channels. These data suggest new ideas on how a terminally-differentiated non-regenerating hair cell in the mammalian cochlea may repair and tune its stereocilia bundle throughout the life span of the organism.
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Affiliation(s)
- A Catalina Vélez-Ortega
- Department of Physiology, University of Kentucky, 800 Rose St., Lexington, KY, 40536-0298, USA.
| | - Gregory I Frolenkov
- Department of Physiology, University of Kentucky, 800 Rose St., Lexington, KY, 40536-0298, USA.
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Dunn J, Ferluga S, Sharma V, Futschik M, Hilton DA, Adams CL, Lasonder E, Hanemann CO. Proteomic analysis discovers the differential expression of novel proteins and phosphoproteins in meningioma including NEK9, HK2 and SET and deregulation of RNA metabolism. EBioMedicine 2018; 40:77-91. [PMID: 30594554 PMCID: PMC6412084 DOI: 10.1016/j.ebiom.2018.12.048] [Citation(s) in RCA: 33] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2018] [Revised: 12/20/2018] [Accepted: 12/20/2018] [Indexed: 12/26/2022] Open
Abstract
Background Meningioma is the most frequent primary intracranial tumour. Surgical resection remains the main therapeutic option as pharmacological intervention is hampered by poor knowledge of their proteomic signature. There is an urgent need to identify new therapeutic targets and biomarkers of meningioma. Methods We performed proteomic profiling of grade I, II and III frozen meningioma specimens and three normal healthy human meninges using LC-MS/MS to analyse global proteins, enriched phosphoproteins and phosphopeptides. Differential expression and functional annotation of proteins was completed using Perseus, IPA® and DAVID. We validated differential expression of proteins and phosphoproteins by Western blot on a meningioma validation set and by immunohistochemistry. Findings We quantified 3888 proteins and 3074 phosphoproteins across all meningioma grades and normal meninges. Bioinformatics analysis revealed commonly upregulated proteins and phosphoproteins to be enriched in Gene Ontology terms associated with RNA metabolism. Validation studies confirmed significant overexpression of proteins such as EGFR and CKAP4 across all grades, as well as the aberrant activation of the downstream PI3K/AKT pathway, which seems differential between grades. Further, we validated upregulation of the total and activated phosphorylated form of the NIMA-related kinase, NEK9, involved in mitotic progression. Novel proteins identified and validated in meningioma included the nuclear proto-oncogene SET, the splicing factor SF2/ASF and the higher-grade specific protein, HK2, involved in cellular metabolism. Interpretation Overall, we generated a proteomic thesaurus of meningiomas for the identification of potential biomarkers and therapeutic targets. Fund This study was supported by Brain Tumour Research.
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Affiliation(s)
- Jemma Dunn
- Institute of Translational and Stratified Medicine, Plymouth University Peninsula Schools of Medicine and Dentistry, John Bull Building, Plymouth Science Park, Research Way, Derriford, Plymouth PL6 8BU, UK
| | - Sara Ferluga
- Institute of Translational and Stratified Medicine, Plymouth University Peninsula Schools of Medicine and Dentistry, John Bull Building, Plymouth Science Park, Research Way, Derriford, Plymouth PL6 8BU, UK
| | - Vikram Sharma
- School of Biomedical Science, Faculty of Medicine and Dentistry, University of Plymouth, Derriford Research Facility, Research Way, Derriford, Plymouth PL6 8BU, UK
| | - Matthias Futschik
- School of Biomedical Science, Faculty of Medicine and Dentistry, University of Plymouth, Derriford Research Facility, Research Way, Derriford, Plymouth PL6 8BU, UK
| | - David A Hilton
- Cellular and Anatomical Pathology, Plymouth Hospitals NHS Trust, Derriford Road, Plymouth PL6 8DH, UK
| | - Claire L Adams
- Institute of Translational and Stratified Medicine, Plymouth University Peninsula Schools of Medicine and Dentistry, John Bull Building, Plymouth Science Park, Research Way, Derriford, Plymouth PL6 8BU, UK
| | - Edwin Lasonder
- School of Biomedical Science, Faculty of Medicine and Dentistry, University of Plymouth, Derriford Research Facility, Research Way, Derriford, Plymouth PL6 8BU, UK
| | - C Oliver Hanemann
- Institute of Translational and Stratified Medicine, Plymouth University Peninsula Schools of Medicine and Dentistry, John Bull Building, Plymouth Science Park, Research Way, Derriford, Plymouth PL6 8BU, UK.
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Anwar T, Arellano-Garcia C, Ropa J, Chen YC, Kim HS, Yoon E, Grigsby S, Basrur V, Nesvizhskii AI, Muntean A, Gonzalez ME, Kidwell KM, Nikolovska-Coleska Z, Kleer CG. p38-mediated phosphorylation at T367 induces EZH2 cytoplasmic localization to promote breast cancer metastasis. Nat Commun 2018; 9:2801. [PMID: 30022044 PMCID: PMC6051995 DOI: 10.1038/s41467-018-05078-8] [Citation(s) in RCA: 77] [Impact Index Per Article: 12.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2017] [Accepted: 05/31/2018] [Indexed: 12/19/2022] Open
Abstract
Overexpression of EZH2 in estrogen receptor negative (ER-) breast cancer promotes metastasis. EZH2 has been mainly studied as the catalytic component of the Polycomb Repressive Complex 2 (PRC2) that mediates gene repression by trimethylating histone H3 at lysine 27 (H3K27me3). However, how EZH2 drives metastasis despite the low H3K27me3 levels observed in ER- breast cancer is unknown. Here we show that in human invasive carcinomas and distant metastases, cytoplasmic EZH2 phosphorylated at T367 is significantly associated with ER- disease and low H3K27me3 levels. p38-mediated EZH2 phosphorylation at T367 promotes EZH2 cytoplasmic localization and potentiates EZH2 binding to vinculin and other cytoskeletal regulators of cell migration and invasion. Ectopic expression of a phospho-deficient T367A-EZH2 mutant is sufficient to inhibit EZH2 cytoplasmic expression, disrupt binding to cytoskeletal regulators, and reduce EZH2-mediated adhesion, migration, invasion, and development of spontaneous metastasis. These results point to a PRC2-independent non-canonical mechanism of EZH2 pro-metastatic function.
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MESH Headings
- Animals
- Breast Neoplasms/genetics
- Breast Neoplasms/mortality
- Breast Neoplasms/pathology
- Breast Neoplasms/therapy
- Carcinoma, Ductal, Breast/genetics
- Carcinoma, Ductal, Breast/mortality
- Carcinoma, Ductal, Breast/secondary
- Carcinoma, Ductal, Breast/therapy
- Cell Line, Tumor
- Cell Movement
- Enhancer of Zeste Homolog 2 Protein/antagonists & inhibitors
- Enhancer of Zeste Homolog 2 Protein/genetics
- Enhancer of Zeste Homolog 2 Protein/metabolism
- Estrogen Receptor alpha/genetics
- Estrogen Receptor alpha/metabolism
- Female
- Gene Expression Regulation, Neoplastic
- Heterografts
- Histones/genetics
- Histones/metabolism
- Humans
- Lung Neoplasms/genetics
- Lung Neoplasms/mortality
- Lung Neoplasms/secondary
- Lung Neoplasms/therapy
- Mice
- Mice, SCID
- Phosphorylation
- Polycomb Repressive Complex 2/genetics
- Polycomb Repressive Complex 2/metabolism
- RNA, Small Interfering/genetics
- RNA, Small Interfering/metabolism
- Survival Analysis
- Threonine
- p38 Mitogen-Activated Protein Kinases/antagonists & inhibitors
- p38 Mitogen-Activated Protein Kinases/genetics
- p38 Mitogen-Activated Protein Kinases/metabolism
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Affiliation(s)
- Talha Anwar
- Department of Pathology, University of Michigan Medical School, Ann Arbor, MI, 48109, USA
- Molecular Cellular and Pathology Training Program, University of Michigan, Ann Arbor, MI, 48109, USA
- Rogel Cancer Center, University of Michigan, Ann Arbor, MI, 48109, USA
- Medical Scientist Training Program, University of Michigan, Ann Arbor, MI, 48109, USA
| | - Caroline Arellano-Garcia
- Michigan Post-baccalaureate Research Education Program, University of Michigan, Ann Arbor, MI, 48109, USA
| | - James Ropa
- Department of Pathology, University of Michigan Medical School, Ann Arbor, MI, 48109, USA
- Molecular Cellular and Pathology Training Program, University of Michigan, Ann Arbor, MI, 48109, USA
| | - Yu-Chih Chen
- Rogel Cancer Center, University of Michigan, Ann Arbor, MI, 48109, USA
- Department of Electrical Engineering and Computer Science, University of Michigan, Ann Arbor, MI, 48109, USA
| | - Hong Sun Kim
- Department of Pathology, University of Michigan Medical School, Ann Arbor, MI, 48109, USA
- Rogel Cancer Center, University of Michigan, Ann Arbor, MI, 48109, USA
| | - Euisik Yoon
- Department of Electrical Engineering and Computer Science, University of Michigan, Ann Arbor, MI, 48109, USA
- Department of Biomedical Engineering, University of Michigan, Ann Arbor, MI, 48109, USA
| | - Sierrah Grigsby
- Department of Pathology, University of Michigan Medical School, Ann Arbor, MI, 48109, USA
- Molecular Cellular and Pathology Training Program, University of Michigan, Ann Arbor, MI, 48109, USA
| | - Venkatesha Basrur
- Department of Pathology, University of Michigan Medical School, Ann Arbor, MI, 48109, USA
| | - Alexey I Nesvizhskii
- Department of Pathology, University of Michigan Medical School, Ann Arbor, MI, 48109, USA
| | - Andrew Muntean
- Department of Pathology, University of Michigan Medical School, Ann Arbor, MI, 48109, USA
| | - Maria E Gonzalez
- Department of Pathology, University of Michigan Medical School, Ann Arbor, MI, 48109, USA
- Rogel Cancer Center, University of Michigan, Ann Arbor, MI, 48109, USA
| | - Kelley M Kidwell
- Department of Biostatistics, University of Michigan, Ann Arbor, MI, 48109, USA
| | | | - Celina G Kleer
- Department of Pathology, University of Michigan Medical School, Ann Arbor, MI, 48109, USA.
- Rogel Cancer Center, University of Michigan, Ann Arbor, MI, 48109, USA.
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Barh D, Tiwari S, Kumavath RN, Ghosh P, Azevedo V. Linking common non-coding RNAs of human lung cancer and M. tuberculosis. Bioinformation 2018; 14:337-345. [PMID: 30237679 PMCID: PMC6137563 DOI: 10.6026/97320630014337] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2018] [Revised: 06/29/2018] [Accepted: 06/30/2018] [Indexed: 02/07/2023] Open
Abstract
Lung cancer and pulmonary tuberculosis caused by Mycobacterium are two major causes of deaths worldwide. Tuberculosis linked lung cancer is known. However, the precise molecular mechanism of Mycobacterium associated increased risk of lung cancer is not understood. We report 45 common human miRNAs deregulated in both pulmonary tuberculosis and lung cancer. We show that sRNA_1096 and sRNA_1414 from M. tuberculosis have sequence homology with human mir-21. Hence, the potential role of these three small non-coding RNAs in rifampicin resistance in pulmonary tuberculosis is implied. Further, the linking of sRNA_1096 and sRNA_1414 from M. tuberculosis with the host lung tumorigenesis is inferred. Nonetheless, further analysis and validation is required to associate these three non-coding RNAs with Mycobacterium associated increased risk of lung cancer.
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Affiliation(s)
- Debmalya Barh
- Centre for Genomics and Applied Gene Technology, Institute of Integrative Omics and Applied Biotechnology (IIOAB), Nonakuri, Purba Medinipur, West Bengal, India
- Laboratorio de Genetica Celular e Molecular, Departamento de Biologia Geral, Instituto de Ciencias Biologicas (ICB), Universidade Federal de Minas Gerais, Pampulha, Belo Horizonte, Minas Gerais, Brazil
- Division of Bioinformatics and Computational Genomics, NITTE University Center for Science Education and Research (NUCSER), NITTE (Deemed to be University), Deralakatte, Mangaluru, Karnataka, India
| | - Sandeep Tiwari
- Laboratorio de Genetica Celular e Molecular, Departamento de Biologia Geral, Instituto de Ciencias Biologicas (ICB), Universidade Federal de Minas Gerais, Pampulha, Belo Horizonte, Minas Gerais, Brazil
| | - Ranjith N. Kumavath
- Department of Genomic Science, School of Biological Sciences, Central University of Kerala, Tejaswini Hills, Periya (P.O) Kasaragod, Kerala-671316, India
| | - Preetam Ghosh
- Department of Computer Science, Virginia Commonwealth University, Virginia 23284, USA
| | - Vasco Azevedo
- Laboratorio de Genetica Celular e Molecular, Departamento de Biologia Geral, Instituto de Ciencias Biologicas (ICB), Universidade Federal de Minas Gerais, Pampulha, Belo Horizonte, Minas Gerais, Brazil
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32
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de Vries M, van der Plaat DA, Vonk JM, Boezen HM. No association between DNA methylation and COPD in never and current smokers. BMJ Open Respir Res 2018; 5:e000282. [PMID: 30018765 PMCID: PMC6045732 DOI: 10.1136/bmjresp-2018-000282] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2018] [Revised: 06/07/2018] [Accepted: 06/09/2018] [Indexed: 12/04/2022] Open
Abstract
Introduction Chronic obstructive pulmonary disease (COPD) is a progressive inflammatory lung disease with cigarette smoke as the main risk factor for its development. Since not every smoker develops COPD, other factors likely underlie differences in susceptibility to develop COPD. Here, we tested if DNA methylation may be such a factor by assessing the association between DNA methylation levels and COPD in never and current smokers from the general population. Methods For the current study, 1561 subjects were non-randomly selected from the LifeLines cohort study. We included 903 never smokers and 658 current smokers with and without COPD, defined as pre-bronchodilator forced expiratory volume in 1 s/forced vital capacity (FEV1/FVC) <70%. Subsequently, we performed robust regression analysis on whole blood DNA methylation levels of 420 938 CpG sites with COPD as outcome. Results None of the CpG sites in both the never and the current smokers were genome-wide significantly associated with COPD. CpG site cg14972228 annotated to SIPAL3 was most significant (p=5.66×10−6) in the never smokers, while CpG site cg08282037 annotated to EPS8L1 was most significant (p=1.45×10−5) in the current smokers. Conclusion In contrast to a previous, smaller study, we did not observe any significant association between DNA methylation levels and the presence of COPD, independent of smoking status. Apparently, DNA methylation studies are highly variable.
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Affiliation(s)
- Maaike de Vries
- University of Groningen, University Medical Center Groningen, Department of Epidemiology, Groningen, The Netherlands.,University of Groningen, University Medical Center Groningen, Groningen Research Institute for Asthma and COPD, Groningen, The Netherlands
| | - Diana A van der Plaat
- University of Groningen, University Medical Center Groningen, Department of Epidemiology, Groningen, The Netherlands.,University of Groningen, University Medical Center Groningen, Groningen Research Institute for Asthma and COPD, Groningen, The Netherlands
| | - Judith M Vonk
- University of Groningen, University Medical Center Groningen, Department of Epidemiology, Groningen, The Netherlands.,University of Groningen, University Medical Center Groningen, Groningen Research Institute for Asthma and COPD, Groningen, The Netherlands
| | - H Marike Boezen
- University of Groningen, University Medical Center Groningen, Department of Epidemiology, Groningen, The Netherlands.,University of Groningen, University Medical Center Groningen, Groningen Research Institute for Asthma and COPD, Groningen, The Netherlands
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33
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Gonzalez-Pujana A, Rementeria A, Blanco FJ, Igartua M, Pedraz JL, Santos-Vizcaino E, Hernandez RM. The role of osmolarity adjusting agents in the regulation of encapsulated cell behavior to provide a safer and more predictable delivery of therapeutics. Drug Deliv 2018; 24:1654-1666. [PMID: 29078721 PMCID: PMC8241175 DOI: 10.1080/10717544.2017.1391894] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
Transplantation of cells within alginate microspheres has been extensively studied for sustained drug delivery. However, the lack of control over cell behavior represents a major concern regarding the efficacy and the safety of the therapy. Here, we demonstrated that when formulating the biosystem, an adequate selection of osmolarity adjusting agents significantly contributes to the regulation of cell responses. Our data showed that these agents interact in the capsule formation process, influencing the alginate crosslinking degree. Therefore, when selecting inert or electrolyte-based osmolarity adjusting agents to encapsulate D1 multipotent mesenchymal stromal cells (MSCs), alginate microcapsules with differing mechanical properties were obtained. Since mechanical forces acting on cells influence their behavior, contrasting cell responses were observed both, in vitro and in vivo. When employing mannitol as an inert osmolarity adjusting agent, microcapsules presented a more permissive matrix, allowing a tumoral-like behavior. This resulted in the formation of enormous cell-aggregates that presented necrotic cores and protruding peripheral cells, rendering the therapy unpredictable, dysfunctional, and unsafe. Conversely, the use of electrolyte osmolarity adjusting agents, including calcium or sodium, provided the capsule with a suitable crosslinking degree that established a tight control over cell proliferation and enabled an adequate therapeutic regimen in vivo. The crucial impact of these agents was confirmed when gene expression studies reported pivotal divergences not only in proliferative pathways, but also in genes involved in survival, migration, and differentiation. Altogether, our results prove osmolarity adjusting agents as an effective tool to regulate cell behavior and obtain safer and more predictable therapies.
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Affiliation(s)
- Ainhoa Gonzalez-Pujana
- a NanoBioCel Group, Laboratory of Pharmaceutics, School of Pharmacy , University of the Basque Country (UPV/EHU), Vitoria-Gasteiz, Spain.,b Biomedical Research Networking Centre in Bioengineering , Biomaterials and Nanomedicine (CIBER-BBN) , Vitoria-Gasteiz , Spain
| | - Aitor Rementeria
- c Department of Immunology, Microbiology and Parasitology, Faculty of Science and Technology , Fungal and Bacterial Biomics Research Group, University of the Basque Country (UPV/EHU) , Leioa , Spain
| | - Francisco Javier Blanco
- d CIBER-BBN-Bioscaff Cartílago , INIBIC Institute for Biomedical research , A Coruña , Spain
| | - Manoli Igartua
- a NanoBioCel Group, Laboratory of Pharmaceutics, School of Pharmacy , University of the Basque Country (UPV/EHU), Vitoria-Gasteiz, Spain.,b Biomedical Research Networking Centre in Bioengineering , Biomaterials and Nanomedicine (CIBER-BBN) , Vitoria-Gasteiz , Spain
| | - Jose Luis Pedraz
- a NanoBioCel Group, Laboratory of Pharmaceutics, School of Pharmacy , University of the Basque Country (UPV/EHU), Vitoria-Gasteiz, Spain.,b Biomedical Research Networking Centre in Bioengineering , Biomaterials and Nanomedicine (CIBER-BBN) , Vitoria-Gasteiz , Spain
| | - Edorta Santos-Vizcaino
- a NanoBioCel Group, Laboratory of Pharmaceutics, School of Pharmacy , University of the Basque Country (UPV/EHU), Vitoria-Gasteiz, Spain.,b Biomedical Research Networking Centre in Bioengineering , Biomaterials and Nanomedicine (CIBER-BBN) , Vitoria-Gasteiz , Spain
| | - Rosa Maria Hernandez
- a NanoBioCel Group, Laboratory of Pharmaceutics, School of Pharmacy , University of the Basque Country (UPV/EHU), Vitoria-Gasteiz, Spain.,b Biomedical Research Networking Centre in Bioengineering , Biomaterials and Nanomedicine (CIBER-BBN) , Vitoria-Gasteiz , Spain
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Wu X, Guldbrandtsen B, Nielsen US, Lund MS, Sahana G. Association analysis for young stock survival index with imputed whole-genome sequence variants in Nordic Holstein cattle. J Dairy Sci 2017; 100:6356-6370. [PMID: 28551195 DOI: 10.3168/jds.2017-12688] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2017] [Accepted: 04/05/2017] [Indexed: 01/09/2023]
Abstract
Identification of the genetic variants associated with calf survival in dairy cattle will aid in the elimination of harmful mutations from the cattle population and the reduction of calf and young stock mortality rates. We used de-regressed estimated breeding values for the young stock survival (YSS) index as response variables in a genome-wide association study with imputed whole-genome sequence variants. A total of 4,610 bulls with estimated breeding values were genotyped with the Illumina BovineSNP50 (Illumina, San Diego, CA) single nucleotide polymorphism (SNP) genotyping array. Genotypes were imputed to whole-genome sequence variants. After quality control, 15,419,550 SNP on 29 Bos taurus autosomes (BTA) were used for association analysis. A modified mixed-model association analysis was used for a genome scan, followed by a linear mixed-model analysis for selected genetic variants. We identified 498 SNP on BTA5 and BTA18 that were associated with the YSS index in Nordic Holstein. The SNP rs440345507 (Chr5:94721790) on BTA5 was the putative causal mutation affecting YSS. Two haplotype-based models were used to identify haplotypes with the largest detrimental effects on YSS index. For each association signal, 1 haplotype region with harmful effects and the lead associated SNP were identified. Detected haplotypes on BTA5 and BTA18 explained 1.16 and 1.20%, respectively, of genetic variance for the YSS index. We examined whether YSS quantitative trait loci (QTL) on BTA5 and BTA18 were associated with stillbirth. YSS QTL on BTA18 overlapped a QTL region for stillbirth, but most likely 2 different causal variants were responsible for these 2 QTL. Four component traits of the YSS index, defined by sex and age, were analyzed separately by the modified mixed-model approach. The same genomic regions were associated with both bull and heifer calf mortality. Several genes (EPS8, LOC100138951, and KLK family genes) contained a lead associated SNP or were included in haplotypes with large detrimental effects on YSS in Nordic Holstein cattle.
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Affiliation(s)
- Xiaoping Wu
- Center for Quantitative Genetics and Genomics, Department of Molecular Biology and Genetics, Aarhus University, 8830 Tjele, Denmark
| | - Bernt Guldbrandtsen
- Center for Quantitative Genetics and Genomics, Department of Molecular Biology and Genetics, Aarhus University, 8830 Tjele, Denmark
| | - Ulrik Sander Nielsen
- Livestock Innovation, SEGES, Danish Agricultural and Food Council F.m.b.A, 8200 Aarhus, Denmark
| | - Mogens Sandø Lund
- Center for Quantitative Genetics and Genomics, Department of Molecular Biology and Genetics, Aarhus University, 8830 Tjele, Denmark
| | - Goutam Sahana
- Center for Quantitative Genetics and Genomics, Department of Molecular Biology and Genetics, Aarhus University, 8830 Tjele, Denmark.
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35
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Gupta S, Mukherjee S, Syed P, Pandala NG, Choudhary S, Singh VA, Singh N, Zhu H, Epari S, Noronha SB, Moiyadi A, Srivastava S. Evaluation of autoantibody signatures in meningioma patients using human proteome arrays. Oncotarget 2017; 8:58443-58456. [PMID: 28938569 PMCID: PMC5601665 DOI: 10.18632/oncotarget.16997] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2016] [Accepted: 03/11/2017] [Indexed: 12/26/2022] Open
Abstract
Meningiomas are one of the most common tumors of the Central nervous system (CNS). This study aims to identify the autoantibody biomarkers in meningiomas using high-density human proteome arrays (~17,000 full-length recombinant human proteins). Screening of sera from 15 unaffected healthy individuals, 10 individuals with meningioma grade I and 5 with meningioma grade II was performed. This comprehensive proteomics based investigation revealed the dysregulation of 489 and 104 proteins in grades I and II of meningioma, respectively, along with the enrichment of several signalling pathways, which might play a crucial role in the manifestation of the disease. Autoantibody targets like IGHG4, CRYM, EFCAB2, STAT6, HDAC7A and CCNB1 were significantly dysregulated across both the grades. Further, we compared this to the tissue proteome and gene expression profile from GEO database. Previously reported upregulated proteins from meningioma tissue-based proteomics obtained from high-resolution mass spectrometry demonstrated an aggravated autoimmune response, emphasizing the clinical relevance of these targets. Some of these targets like SELENBP1 were tested for their presence in tumor tissue using immunoblotting. In the light of highly invasive diagnostic modalities employed to diagnose CNS tumors like meningioma, these autoantibody markers offer a minimally invasive diagnostic platform which could be pursued further for clinical translation.
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Affiliation(s)
- Shabarni Gupta
- Department of Biosciences and Bioengineering, Indian Institute of Technology Bombay, Mumbai, India
| | - Shuvolina Mukherjee
- Department of Biosciences and Bioengineering, Indian Institute of Technology Bombay, Mumbai, India
| | - Parvez Syed
- Department of Biosciences and Bioengineering, Indian Institute of Technology Bombay, Mumbai, India.,Department of Biochemistry/Biotechnology, University of Turku, Turun yliopisto, Finland
| | - Narendra Goud Pandala
- Department of Biosciences and Bioengineering, Indian Institute of Technology Bombay, Mumbai, India
| | - Saket Choudhary
- Department of Chemical Engineering, Indian Institute of Technology Bombay, Mumbai, India.,Molecular and Computational Biology, Department of Biological Sciences, University of Southern California, Los Angeles, CA, USA
| | - Vedita Anand Singh
- Department of Biosciences and Bioengineering, Indian Institute of Technology Bombay, Mumbai, India
| | - Namrata Singh
- Department of Biosciences and Bioengineering, Indian Institute of Technology Bombay, Mumbai, India
| | - Heng Zhu
- Department of Pharmacology and Molecular Sciences/High-Throughput Biology Center, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - Sridhar Epari
- Department of Pathology, Tata Memorial Centre, Mumbai, India
| | - Santosh B Noronha
- Department of Chemical Engineering, Indian Institute of Technology Bombay, Mumbai, India
| | | | - Sanjeeva Srivastava
- Department of Biosciences and Bioengineering, Indian Institute of Technology Bombay, Mumbai, India
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Bassiri K, Ferluga S, Sharma V, Syed N, Adams CL, Lasonder E, Hanemann CO. Global Proteome and Phospho-proteome Analysis of Merlin-deficient Meningioma and Schwannoma Identifies PDLIM2 as a Novel Therapeutic Target. EBioMedicine 2017; 16:76-86. [PMID: 28126595 PMCID: PMC5474504 DOI: 10.1016/j.ebiom.2017.01.020] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2016] [Revised: 01/13/2017] [Accepted: 01/13/2017] [Indexed: 12/20/2022] Open
Abstract
Loss or mutation of the tumour suppressor Merlin predisposes individuals to develop multiple nervous system tumours, including schwannomas and meningiomas, sporadically or as part of the autosomal dominant inherited condition Neurofibromatosis 2 (NF2). These tumours display largely low grade features but their presence can lead to significant morbidity. Surgery and radiotherapy remain the only treatment options despite years of research, therefore an effective therapeutic is required. Unbiased omics studies have become pivotal in the identification of differentially expressed genes and proteins that may act as drug targets or biomarkers. Here we analysed the proteome and phospho-proteome of these genetically defined tumours using primary human tumour cells to identify upregulated/activated proteins and/or pathways. We identified over 2000 proteins in comparative experiments between Merlin-deficient schwannoma and meningioma compared to human Schwann and meningeal cells respectively. Using functional enrichment analysis we highlighted several dysregulated pathways and Gene Ontology terms. We identified several proteins and phospho-proteins that are more highly expressed in tumours compared to controls. Among proteins jointly dysregulated in both tumours we focused in particular on PDZ and LIM domain protein 2 (PDLIM2) and validated its overexpression in several tumour samples, while not detecting it in normal cells. We showed that shRNA mediated knockdown of PDLIM2 in both primary meningioma and schwannoma leads to significant reductions in cellular proliferation. To our knowledge, this is the first comprehensive assessment of the NF2-related meningioma and schwannoma proteome and phospho-proteome. Taken together, our data highlight several commonly deregulated factors, and indicate that PDLIM2 may represent a novel, common target for meningioma and schwannoma. Proteome and phosphoproteome of Merlin-deficient schwannomas and meningiomas were analysed. Comparative studies highlighted several pathways relevant for therapeutic intervention. PDLIM2 was identified as a novel, commonly upregulated protein in both tumours. PDLIM2 knockdown led to a significant reduction in proliferation in both cell types.
Loss or mutation of the protein Merlin causes a genetic condition known as Neurofibromatosis 2 (NF2) characterised by the growth of schwannomas and meningiomas. We analysed several of these tumour samples and identified over 2000 proteins in comparative experiments between Merlin-deficient schwannoma and meningioma compared to normal controls. We identified PDZ and LIM domain protein 2 (PDLIM2) as overexpressed in both tumour types and further showed that knockdown of PDLIM2 leads to significant reductions in cellular proliferation. Taken together, our data highlight several deregulated signalling pathways, and indicate that PDLIM2 may represent a novel, common target for meningioma and schwannoma.
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Affiliation(s)
- Kayleigh Bassiri
- Institute of Translational and Stratified Medicine, Plymouth University Peninsula Schools of Medicine and Dentistry, John Bull Building, Plymouth Science Park, Research Way, Derriford, Plymouth PL6 8BU, UK
| | - Sara Ferluga
- Institute of Translational and Stratified Medicine, Plymouth University Peninsula Schools of Medicine and Dentistry, John Bull Building, Plymouth Science Park, Research Way, Derriford, Plymouth PL6 8BU, UK
| | - Vikram Sharma
- School of Biomedical and Healthcare Sciences, Plymouth University, Drakes Circus, Plymouth PL4 8AA, UK
| | - Nelofer Syed
- John Fulcher Neuro-oncology Laboratory, Division of Brain Sciences, Faculty of Medicine, Imperial College London, London W6 8RP, UK
| | - Claire L Adams
- Institute of Translational and Stratified Medicine, Plymouth University Peninsula Schools of Medicine and Dentistry, John Bull Building, Plymouth Science Park, Research Way, Derriford, Plymouth PL6 8BU, UK
| | - Edwin Lasonder
- School of Biomedical and Healthcare Sciences, Plymouth University, Drakes Circus, Plymouth PL4 8AA, UK
| | - C Oliver Hanemann
- Institute of Translational and Stratified Medicine, Plymouth University Peninsula Schools of Medicine and Dentistry, John Bull Building, Plymouth Science Park, Research Way, Derriford, Plymouth PL6 8BU, UK.
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37
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Buro C, Burmeister C, Quack T, Grevelding CG. Identification and first characterization of SmEps8, a potential interaction partner of SmTK3 and SER transcribed in the gonads of Schistosoma mansoni. Exp Parasitol 2016; 180:55-63. [PMID: 28017636 DOI: 10.1016/j.exppara.2016.12.002] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2016] [Revised: 10/28/2016] [Accepted: 12/05/2016] [Indexed: 02/07/2023]
Abstract
In eukaryotes the roles of protein kinases (PKs) regulating important biological processes such as growth and differentiation are well known. Molecular, biochemical, and physiological analyses trying to unravel principles of schistosome development have substantiated the importance for PKs also in this parasite. Amongst others the role of SmTK3 was studied, one of the first cellular PKs characterized from Schistosoma mansoni. Its function was demonstrated in mitogenic and differentiation processes in the gonads. Furthermore, first insights were obtained for the downstream part of a signal transduction cascade SmTK3 is involved in, which includes the diaphanous homolog SmDia. Here we attempted to further unravel the SmTK3 signaling cascade by searching for upstream interaction partners. Using yeast three-hybrid (Y3H) analyses we detected the epidermal growth factor receptor (EGFR) pathway substrate 8 of S. mansoni (SmEps8) as the most interesting candidate. By detailed interaction analyses we showed a contribution of the Src homology (SH) domains SH2 and SH3 of SmTK3 to binding, with a clear bias towards SH2. Compared to full-length SmEps8, binding was enhanced when only its 5' part including the phosphotyrosine binding domain (PTB) was used for interaction analyses including the SH2 domain of SmTK3, although phosphorylation seemed not to play a decisive role for binding. RT-PCR analyses and in situ hybridization experiments demonstrated similar transcription patterns of SmTK3 and SmEPS8, which co-localize in the reproductive organs. Furthermore, first evidence was obtained for SmEps8 interaction and colocalization with SER, one of the epidermal growth factor receptor (EGFR) homologs detected in S. mansoni. The results of this study provide first evidence for a SER-SmEps8-SmTK3-SmDia signal transduction pathway controlling differentiation processes in the gonads of S. mansoni.
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Affiliation(s)
- C Buro
- BFS, Institute of Parasitology, Justus-Liebig-University Giessen, Germany
| | - C Burmeister
- BFS, Institute of Parasitology, Justus-Liebig-University Giessen, Germany
| | - T Quack
- BFS, Institute of Parasitology, Justus-Liebig-University Giessen, Germany
| | - C G Grevelding
- BFS, Institute of Parasitology, Justus-Liebig-University Giessen, Germany.
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Giampietro C. VE-cadherin complex plasticity: EPS8 and YAP play relay at adherens junctions. Tissue Barriers 2016; 4:e1232024. [PMID: 28123926 DOI: 10.1080/21688370.2016.1232024] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2016] [Revised: 08/24/2016] [Accepted: 08/29/2016] [Indexed: 01/24/2023] Open
Abstract
The vascular endothelium is a selective barrier that separates the organs from the circulating blood. The endothelium has a wide variety of functions controlled by cell-to-cell junctions and in particular by Vascular Endothelial cadherin (VE-cadherin) complexes. Recent research identified the epidermal growth factor receptor kinase substrate 8 (EPS8) and the co-transcriptional regulator yes-associated protein (YAP) as new components of the adherens junction complexes. The binding of these 2 proteins to VE-cadherin determines the formation of different specialized adhesive structures contributing to the dynamic control of vascular permeability. This commentary will summarize what is currently known about the role of EPS8 and YAP in the modification of molecular organization and intracellular signaling of adherens junction complexes, and their potential multiple effects on vascular homeostasis.
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Affiliation(s)
- Costanza Giampietro
- Department of Biosciences, University of Milan, Milan, Italy; IFOM-The FIRC Institute of Molecular Oncology, Milan, Italy
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Yang X, Yan F, He Z, Liu S, Cheng Y, Wei K, Gan S, Yuan J, Wang S, Xiao Y, Ren K, Liu N, Hu X, Ding X, Hu X, Xiang S. ITSN2L Interacts with and Negatively Regulates RABEP1. Int J Mol Sci 2015; 16:28242-54. [PMID: 26633357 PMCID: PMC4691038 DOI: 10.3390/ijms161226091] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2015] [Revised: 10/28/2015] [Accepted: 11/02/2015] [Indexed: 01/26/2023] Open
Abstract
Intersectin-2Long (ITSN2L) is a multi-domain protein participating in endocytosis and exocytosis. In this study, RABEP1 was identified as a novel ITSN2L interacting protein using a yeast two-hybrid screen from a human brain cDNA library and this interaction, specifically involving the ITSN2L CC domain and RABEP1 CC3 regions, was further confirmed by in vitro GST (glutathione-S-transferase) pull-down and in vivo co-immunoprecipitation assays. Corroboratively, we observed that these two proteins co-localize in the cytoplasm of mammalian cells. Furthermore, over-expression of ITSN2L promotes RABEP1 degradation and represses RABEP1-enhanced endosome aggregation, indicating that ITSN2L acts as a negative regulator of RABEP1. Finally, we showed that ITSN2L and RABEP1 play opposite roles in regulating endocytosis. Taken together, our results indicate that ITSN2L interacts with RABEP1 and stimulates its degradation in regulation of endocytosis.
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Affiliation(s)
- Xiaoxu Yang
- Key Laboratory of Protein Chemistry and Developmental Biology of State Ministry of Education, College of Life Sciences, Hunan Normal University, Changsha 410081, China.
| | - Feng Yan
- Key Laboratory of Protein Chemistry and Developmental Biology of State Ministry of Education, College of Life Sciences, Hunan Normal University, Changsha 410081, China.
| | - Zhicheng He
- Key Laboratory of Protein Chemistry and Developmental Biology of State Ministry of Education, College of Life Sciences, Hunan Normal University, Changsha 410081, China.
| | - Shan Liu
- Key Laboratory of Protein Chemistry and Developmental Biology of State Ministry of Education, College of Life Sciences, Hunan Normal University, Changsha 410081, China.
| | - Yeqing Cheng
- Key Laboratory of Protein Chemistry and Developmental Biology of State Ministry of Education, College of Life Sciences, Hunan Normal University, Changsha 410081, China.
| | - Ke Wei
- Key Laboratory of Protein Chemistry and Developmental Biology of State Ministry of Education, College of Life Sciences, Hunan Normal University, Changsha 410081, China.
| | - Shiquan Gan
- Key Laboratory of Protein Chemistry and Developmental Biology of State Ministry of Education, College of Life Sciences, Hunan Normal University, Changsha 410081, China.
| | - Jing Yuan
- Key Laboratory of Protein Chemistry and Developmental Biology of State Ministry of Education, College of Life Sciences, Hunan Normal University, Changsha 410081, China.
| | - Shang Wang
- Key Laboratory of Protein Chemistry and Developmental Biology of State Ministry of Education, College of Life Sciences, Hunan Normal University, Changsha 410081, China.
| | - Ye Xiao
- Key Laboratory of Protein Chemistry and Developmental Biology of State Ministry of Education, College of Life Sciences, Hunan Normal University, Changsha 410081, China.
| | - Kaiqun Ren
- Key Laboratory of Protein Chemistry and Developmental Biology of State Ministry of Education, College of Life Sciences, Hunan Normal University, Changsha 410081, China.
| | - Ning Liu
- Key Laboratory of Protein Chemistry and Developmental Biology of State Ministry of Education, College of Life Sciences, Hunan Normal University, Changsha 410081, China.
| | - Xiang Hu
- Key Laboratory of Protein Chemistry and Developmental Biology of State Ministry of Education, College of Life Sciences, Hunan Normal University, Changsha 410081, China.
| | - Xiaofeng Ding
- Key Laboratory of Protein Chemistry and Developmental Biology of State Ministry of Education, College of Life Sciences, Hunan Normal University, Changsha 410081, China.
| | - Xingwang Hu
- Key Laboratory of Protein Chemistry and Developmental Biology of State Ministry of Education, College of Life Sciences, Hunan Normal University, Changsha 410081, China.
- Department of Dermatology, Xiangya Hospital, Central South University, Changsha 410081, China.
| | - Shuanglin Xiang
- Key Laboratory of Protein Chemistry and Developmental Biology of State Ministry of Education, College of Life Sciences, Hunan Normal University, Changsha 410081, China.
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Sauvanet C, Wayt J, Pelaseyed T, Bretscher A. Structure, Regulation, and Functional Diversity of Microvilli on the Apical Domain of Epithelial Cells. Annu Rev Cell Dev Biol 2015; 31:593-621. [DOI: 10.1146/annurev-cellbio-100814-125234] [Citation(s) in RCA: 110] [Impact Index Per Article: 12.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Cécile Sauvanet
- Department of Molecular Biology and Genetics and Weill Institute for Molecular and Cell Biology, Cornell University, Ithaca, New York 14853;
| | - Jessica Wayt
- Department of Molecular Biology and Genetics and Weill Institute for Molecular and Cell Biology, Cornell University, Ithaca, New York 14853;
| | - Thaher Pelaseyed
- Department of Molecular Biology and Genetics and Weill Institute for Molecular and Cell Biology, Cornell University, Ithaca, New York 14853;
| | - Anthony Bretscher
- Department of Molecular Biology and Genetics and Weill Institute for Molecular and Cell Biology, Cornell University, Ithaca, New York 14853;
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Caye A, Strullu M, Guidez F, Cassinat B, Gazal S, Fenneteau O, Lainey E, Nouri K, Nakhaei-rad S, Dvorsky R, Lachenaud J, Pereira S, Vivent J, Verger E, Vidaud D, Galambrun C, Picard C, Petit A, Contet A, Poirée M, Sirvent N, Méchinaud F, Adjaoud D, Paillard C, Nelken B, Reguerre Y, Bertrand Y, Häussinger D, Dalle J, Ahmadian MR, Baruchel A, Chomienne C, Cavé H. Juvenile myelomonocytic leukemia displays mutations in components of the RAS pathway and the PRC2 network. Nat Genet 2015; 47:1334-40. [DOI: 10.1038/ng.3420] [Citation(s) in RCA: 123] [Impact Index Per Article: 13.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2015] [Accepted: 09/16/2015] [Indexed: 12/18/2022]
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Dahmani M, Ammar-Khodja F, Bonnet C, Lefèvre GM, Hardelin JP, Ibrahim H, Mallek Z, Petit C. EPS8L2 is a new causal gene for childhood onset autosomal recessive progressive hearing loss. Orphanet J Rare Dis 2015; 10:96. [PMID: 26282398 PMCID: PMC4539681 DOI: 10.1186/s13023-015-0316-8] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2015] [Accepted: 08/03/2015] [Indexed: 12/21/2022] Open
Abstract
Background More than 70 % of the cases of congenital deafness are of genetic origin, of which approximately 80 % are non-syndromic and show autosomal recessive transmission (DFNB forms). To date, 60 DFNB genes have been identified, most of which cause congenital, severe to profound deafness, whereas a few cause delayed progressive deafness in childhood. We report the study of two Algerian siblings born to consanguineous parents, and affected by progressive hearing loss. Method After exclusion of GJB2 (the gene most frequently involved in non-syndromic deafness in Mediterranean countries), we performed whole-exome sequencing in one sibling. Results A frame-shift variant (c.1014delC; p.Ser339Alafs*15) was identified in EPS8L2, encoding Epidermal growth factor receptor Pathway Substrate 8 L2, a protein of hair cells’ stereocilia previously implicated in progressive deafness in the mouse. This variant predicts a truncated, inactive protein, or no protein at all owing to nonsense-mediated mRNA decay. It was detected at the homozygous state in the two clinically affected siblings, and at the heterozygous state in the unaffected parents and one unaffected sibling, whereas it was never found in a control population of 150 Algerians with normal hearing or in the Exome Variant Server database. Conclusion Whole-exome sequencing allowed us to identify a new gene responsible for childhood progressive hearing loss transmitted on the autosomal recessive mode.
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Affiliation(s)
- Malika Dahmani
- Equipe de Génétique, Laboratoire de Biologie Cellulaire et Moléculaire, Faculté des Sciences Biologiques, Université des Sciences et de la Technologie Houari Boumédiène (USTHB), El Alia, Bab-Ezzouar, Algiers, Algeria.
| | - Fatima Ammar-Khodja
- Equipe de Génétique, Laboratoire de Biologie Cellulaire et Moléculaire, Faculté des Sciences Biologiques, Université des Sciences et de la Technologie Houari Boumédiène (USTHB), El Alia, Bab-Ezzouar, Algiers, Algeria.
| | - Crystel Bonnet
- Syndrome de Usher et autres Atteintes Rétino-Cochléaires, Institut de la vision, 75012, Paris, France. .,UMRS 1120, Institut National de la Santé et de la Recherche Médicale (INSERM), Paris, France. .,Sorbonne Universités, UPMC Université Paris 06, Complexité du Vivant, Paris, 75252 Cedex 05, France.
| | - Gaelle M Lefèvre
- Syndrome de Usher et autres Atteintes Rétino-Cochléaires, Institut de la vision, 75012, Paris, France. .,UMRS 1120, Institut National de la Santé et de la Recherche Médicale (INSERM), Paris, France. .,Sorbonne Universités, UPMC Université Paris 06, Complexité du Vivant, Paris, 75252 Cedex 05, France.
| | - Jean-Pierre Hardelin
- UMRS 1120, Institut National de la Santé et de la Recherche Médicale (INSERM), Paris, France. .,Sorbonne Universités, UPMC Université Paris 06, Complexité du Vivant, Paris, 75252 Cedex 05, France. .,Unité de Génétique et Physiologie de l'Audition, Institut Pasteur, 75015, Paris, France.
| | - Hassina Ibrahim
- Service d'otorhinolaryngologie, Centre Hospitalier Universitaire Mustapha Pacha, Algiers, Algeria.
| | - Zahia Mallek
- Service d'otorhinolaryngologie, Centre Hospitalier Universitaire Bab El Oued, Algiers, Algeria.
| | - Christine Petit
- Syndrome de Usher et autres Atteintes Rétino-Cochléaires, Institut de la vision, 75012, Paris, France. .,UMRS 1120, Institut National de la Santé et de la Recherche Médicale (INSERM), Paris, France. .,Sorbonne Universités, UPMC Université Paris 06, Complexité du Vivant, Paris, 75252 Cedex 05, France. .,Unité de Génétique et Physiologie de l'Audition, Institut Pasteur, 75015, Paris, France. .,Collège de France, 75005, Paris, France.
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43
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Stamatakou E, Hoyos-Flight M, Salinas PC. Wnt Signalling Promotes Actin Dynamics during Axon Remodelling through the Actin-Binding Protein Eps8. PLoS One 2015; 10:e0134976. [PMID: 26252776 PMCID: PMC4529215 DOI: 10.1371/journal.pone.0134976] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2015] [Accepted: 07/07/2015] [Indexed: 11/26/2022] Open
Abstract
Upon arrival at their synaptic targets, axons slow down their growth and extensively remodel before the assembly of presynaptic boutons. Wnt proteins are target-derived secreted factors that promote axonal remodelling and synaptic assembly. In the developing spinal cord, Wnts secreted by motor neurons promote axonal remodelling of NT-3 responsive dorsal root ganglia neurons. Axon remodelling induced by Wnts is characterised by growth cone pausing and enlargement, processes that depend on the re-organisation of microtubules. However, the contribution of the actin cytoskeleton has remained unexplored. Here, we demonstrate that Wnt3a regulates the actin cytoskeleton by rapidly inducing F-actin accumulation in growth cones from rodent DRG neurons through the scaffold protein Dishevelled-1 (Dvl1) and the serine-threonine kinase Gsk3β. Importantly, these changes in actin cytoskeleton occurs before enlargement of the growth cones is evident. Time-lapse imaging shows that Wnt3a increases lamellar protrusion and filopodia velocity. In addition, pharmacological inhibition of actin assembly demonstrates that Wnt3a increases actin dynamics. Through a yeast-two hybrid screen, we identified the actin-binding protein Eps8 as a direct interactor of Dvl1, a scaffold protein crucial for the Wnt signalling pathway. Gain of function of Eps8 mimics Wnt-mediated axon remodelling, whereas Eps8 silencing blocks the axon remodelling activity of Wnt3a. Importantly, blockade of the Dvl1-Eps8 interaction completely abolishes Wnt3a-mediated axonal remodelling. These findings demonstrate a novel role for Wnt-Dvl1 signalling through Eps8 in the regulation of axonal remodeling.
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Affiliation(s)
- Eleanna Stamatakou
- Department of Cell and Developmental Biology, University College London, London, WC1E 6BT, United Kingdom
| | - Monica Hoyos-Flight
- Department of Cell and Developmental Biology, University College London, London, WC1E 6BT, United Kingdom
| | - Patricia C. Salinas
- Department of Cell and Developmental Biology, University College London, London, WC1E 6BT, United Kingdom
- * E-mail:
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Kleino I, Järviluoma A, Hepojoki J, Huovila AP, Saksela K. Preferred SH3 domain partners of ADAM metalloproteases include shared and ADAM-specific SH3 interactions. PLoS One 2015; 10:e0121301. [PMID: 25825872 PMCID: PMC4380453 DOI: 10.1371/journal.pone.0121301] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2014] [Accepted: 01/30/2015] [Indexed: 02/02/2023] Open
Abstract
A disintegrin and metalloproteinases (ADAMs) constitute a protein family essential for extracellular signaling and regulation of cell adhesion. Catalytic activity of ADAMs and their predicted potential for Src-homology 3 (SH3) domain binding show a strong correlation. Here we present a comprehensive characterization of SH3 binding capacity and preferences of the catalytically active ADAMs 8, 9, 10, 12, 15, 17, and 19. Our results revealed several novel interactions, and also confirmed many previously reported ones. Many of the identified SH3 interaction partners were shared by several ADAMs, whereas some were ADAM-specific. Most of the ADAM-interacting SH3 proteins were adapter proteins or kinases, typically associated with sorting and endocytosis. Novel SH3 interactions revealed in this study include TOCA1 and CIP4 as preferred partners of ADAM8, and RIMBP1 as a partner of ADAM19. Our results suggest that common as well as distinct mechanisms are involved in regulation and execution of ADAM signaling, and provide a useful framework for addressing the pathways that connect ADAMs to normal and aberrant cell behavior.
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Affiliation(s)
- Iivari Kleino
- Department of Virology, University of Helsinki and Helsinki University Hospital, Helsinki, Finland
| | - Annika Järviluoma
- Department of Virology, University of Helsinki and Helsinki University Hospital, Helsinki, Finland
| | - Jussi Hepojoki
- Department of Virology, University of Helsinki and Helsinki University Hospital, Helsinki, Finland
| | - Ari Pekka Huovila
- Institute of Biosciences and Medical Technology, University of Tampere, Tampere, Finland
| | - Kalle Saksela
- Department of Virology, University of Helsinki and Helsinki University Hospital, Helsinki, Finland
- * E-mail:
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45
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Ding X, Yang Z, Zhou F, Hu X, Zhou C, Luo C, He Z, Liu Q, Li H, Yan F, Wang F, Xiang S, Zhang J. Human intersectin 2 (ITSN2) binds to Eps8 protein and enhances its degradation. BMB Rep 2014; 45:183-8. [PMID: 22449706 DOI: 10.5483/bmbrep.2012.45.3.183] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023] Open
Abstract
Participates in actin remodeling through Rac and receptor endocytosis via Rab5. Here, we used yeast two-hybrid system with Eps8 as bait to screen a human brain cDNA library. ITSN2 was identified as the novel binding factor of Eps8. The interaction between ITSN2 and Eps8 was demonstrated by the in vivo co-immunoprecipitation and colocalization assays and the in vitro GST pull-down assays. Furthermore, we mapped the interaction domains to the region between amino acids 260-306 of Eps8 and the coiled-coil domain of ITSN2. In addition, protein stability assays and immunofluorescence analysis showed ITSN2 overexpression induced the degradation of Eps8 proteins, which was markedly alleviated with the lysosome inhibitor NH4Cl treatment. Taken together, our results suggested ITSN2 interacts with Eps8 and stimulates the degradation of Eps8 proteins.
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Affiliation(s)
- Xiaofeng Ding
- Key Laboratory of Protein Chemistry and Development Biology of State Education Ministry of China, College of Life Science, Hunan Normal University, Changsha, China
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Edqvist PHD, Fagerberg L, Hallström BM, Danielsson A, Edlund K, Uhlén M, Pontén F. Expression of human skin-specific genes defined by transcriptomics and antibody-based profiling. J Histochem Cytochem 2014; 63:129-41. [PMID: 25411189 DOI: 10.1369/0022155414562646] [Citation(s) in RCA: 50] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
Abstract
To increase our understanding of skin, it is important to define the molecular constituents of the cell types and epidermal layers that signify normal skin. We have combined a genome-wide transcriptomics analysis, using deep sequencing of mRNA from skin biopsies, with immunohistochemistry-based protein profiling to characterize the landscape of gene and protein expression in normal human skin. The transcriptomics and protein expression data of skin were compared to 26 (RNA) and 44 (protein) other normal tissue types. All 20,050 putative protein-coding genes were classified into categories based on patterns of expression. We found that 417 genes showed elevated expression in skin, with 106 genes expressed at least five-fold higher than that in other tissues. The 106 genes categorized as skin enriched encoded for well-known proteins involved in epidermal differentiation and proteins with unknown functions and expression patterns in skin, including the C1orf68 protein, which showed the highest relative enrichment in skin. In conclusion, we have applied a genome-wide analysis to identify the human skin-specific proteome and map the precise localization of the corresponding proteins in different compartments of the skin, to facilitate further functional studies to explore the molecular repertoire of normal skin and to identify biomarkers related to various skin diseases.
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Affiliation(s)
- Per-Henrik D Edqvist
- Department of Immunology, Genetics and Pathology, Science for Life Laboratory, Uppsala University, Uppsala, Sweden (PHDE, AD, KE, FP)
| | - Linn Fagerberg
- Science for Life Laboratory, KTH - Royal Institute of Technology, Stockholm, Sweden (LF, BMH, MU)
| | - Björn M Hallström
- Science for Life Laboratory, KTH - Royal Institute of Technology, Stockholm, Sweden (LF, BMH, MU)
| | - Angelika Danielsson
- Department of Immunology, Genetics and Pathology, Science for Life Laboratory, Uppsala University, Uppsala, Sweden (PHDE, AD, KE, FP)
| | - Karolina Edlund
- Department of Immunology, Genetics and Pathology, Science for Life Laboratory, Uppsala University, Uppsala, Sweden (PHDE, AD, KE, FP)
| | - Mathias Uhlén
- Science for Life Laboratory, KTH - Royal Institute of Technology, Stockholm, Sweden (LF, BMH, MU)
| | - Fredrik Pontén
- Department of Immunology, Genetics and Pathology, Science for Life Laboratory, Uppsala University, Uppsala, Sweden (PHDE, AD, KE, FP)
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Rody WJ, Holliday LS, McHugh KP, Wallet SM, Spicer V, Krokhin O. Mass spectrometry analysis of gingival crevicular fluid in the presence of external root resorption. Am J Orthod Dentofacial Orthop 2014; 145:787-98. [PMID: 24880850 DOI: 10.1016/j.ajodo.2014.03.013] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2013] [Revised: 03/01/2014] [Accepted: 03/01/2014] [Indexed: 12/18/2022]
Abstract
INTRODUCTION In this study, we used liquid chromatography-mass spectrometry (LC-MS) to investigate the differences in the composition of gingival crevicular fluid between resorbing deciduous molars and nonresorbing permanent teeth. The main goal was to identify novel biomarkers associated with root resorption. METHODS Eleven children (4 boys, 7 girls) in the mixed dentition were selected to participate in this split-mouth design study, in which a deciduous second molar with radiographic evidence of root resorption served as the experimental site, and the permanent first molar on the contralateral quadrant was the control site. Gingival crevicular fluid was collected using absorbing strips. A total of 22 samples (11 root resorption, 11 control) were each analyzed with 1-dimensional LC-MS. The remaining samples were then pooled across the 11 patients and analyzed by 2-dimensional LC-MS. The output files were converted to mascot generic format, which can be used to perform protein identification with conventional search engines. RESULTS The 2-dimensional LC-MS protocol was able to identify 2789 and 2421 proteins in the control and resorption pooled samples, respectively. In this population, we detected significantly upregulated and downregulated proteins in the teeth with root resorption. Interestingly, many of these proteins are characteristically found in exosomes. CONCLUSIONS We identified novel proteins that might prove to be useful biomarkers of root resorption, individually or as part of a panel.
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Affiliation(s)
- Wellington J Rody
- Assistant professor, Department of Orthodontics, College of Dentistry, University of Florida, Gainesville, Fla.
| | - L Shannon Holliday
- Associate professor, Department of Orthodontics, College of Dentistry, and Department of Anatomy and Cell Biology, College of Medicine, University of Florida, Gainesville, Fla
| | - Kevin P McHugh
- Associate professor, Department of Periodontology, College of Dentistry, University of Florida, Gainesville, Fla
| | - Shannon M Wallet
- Associate professor, Department of Periodontology, College of Dentistry, University of Florida, Gainesville, Fla
| | - Victor Spicer
- Bioinformatics specialist, Department of Physics and Astronomy, University of Manitoba, Winnipeg, Manitoba, Canada
| | - Oleg Krokhin
- Assistant professor, Department of Internal Medicine, University of Manitoba; senior scientist, Manitoba Center for Proteomics and Systems Biology, Winnipeg Manitoba, Canada
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Abstract
EPS8 was first identified as a tyrosine kinase substrate, that plays a role in EGFR-mediated mitogenic signaling. Recent research has shown that EPS8 is overexpressed in most types of cancer, for example breast cancer, colon cancer, cervical cancer and even hematologic malignancies. EPS8 is involved in many signaling pathways related to tumorigenesis, proliferation, migration and metastasis, and is a biomarker for poor prognosis of cancer patients. This review aims to provide a comprehensive picture of the role of EPS8 in cellular processes and its significance to tumorigenesis. Furthermore, this review focuses on the potential role of EPS8 as a therapeutic cancer target.
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Affiliation(s)
- Yu-Hua Li
- Department of Hematology, Zhujiang Hospital, Southern Medical University, 510282 Guangzhou, China
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49
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Olt J, Mburu P, Johnson SL, Parker A, Kuhn S, Bowl M, Marcotti W, Brown SDM. The actin-binding proteins eps8 and gelsolin have complementary roles in regulating the growth and stability of mechanosensory hair bundles of mammalian cochlear outer hair cells. PLoS One 2014; 9:e87331. [PMID: 24475274 PMCID: PMC3903700 DOI: 10.1371/journal.pone.0087331] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2013] [Accepted: 12/19/2013] [Indexed: 11/21/2022] Open
Abstract
Sound transduction depends upon mechanosensitive channels localized on the hair-like bundles that project from the apical surface of cochlear hair cells. Hair bundles show a stair-case structure composed of rows of stereocilia, and each stereocilium contains a core of tightly-packed and uniformly-polarized actin filaments. The growth and maintenance of the stereociliary actin core are dynamically regulated. Recently, it was shown that the actin-binding protein gelsolin is expressed in the stereocilia of outer hair cells (OHCs) and in its absence they become long and straggly. Gelsolin is part of a whirlin scaffolding protein complex at the stereocilia tip, which has been shown to interact with other actin regulatory molecules such as Eps8. Here we investigated the physiological effects associated with the absence of gelsolin and its possible overlapping role with Eps8. We found that, in contrast to Eps8, gelsolin does not affect mechanoelectrical transduction during immature stages of development. Moreover, OHCs from gelsolin knockout mice were able to mature into fully functional sensory receptors as judged by the normal resting membrane potential and basolateral membrane currents. Mechanoelectrical transducer current in gelsolin-Eps8 double knockout mice showed a profile similar to that observed in the single mutants for Eps8. We propose that gelsolin has a non-overlapping role with Eps8. While Eps8 is mainly involved in the initial growth of stereocilia in both inner hair cells (IHCs) and OHCs, gelsolin is required for the maintenance of mature hair bundles of low-frequency OHCs after the onset of hearing.
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MESH Headings
- Adaptor Proteins, Signal Transducing/metabolism
- Animals
- Cytoskeletal Proteins/metabolism
- Gelsolin/genetics
- Gelsolin/metabolism
- Hair Cells, Auditory, Outer/metabolism
- Hair Cells, Auditory, Outer/physiology
- Hair Cells, Auditory, Outer/ultrastructure
- Immunohistochemistry
- Mechanoreceptors/metabolism
- Mechanoreceptors/physiology
- Mechanoreceptors/ultrastructure
- Mechanotransduction, Cellular/physiology
- Mice
- Mice, Knockout
- Microfilament Proteins/metabolism
- Microscopy, Electron, Scanning
- Patch-Clamp Techniques
- Physical Stimulation
- Pyridinium Compounds
- Quaternary Ammonium Compounds
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Affiliation(s)
- Jennifer Olt
- Department of Biomedical Science, University of Sheffield, Sheffield, United Kingdom
| | - Philomena Mburu
- Medical Research Council (MRC), Mammalian Genetics Unit, Harwell, United Kingdom
| | - Stuart L. Johnson
- Department of Biomedical Science, University of Sheffield, Sheffield, United Kingdom
| | - Andy Parker
- Medical Research Council (MRC), Mammalian Genetics Unit, Harwell, United Kingdom
| | - Stephanie Kuhn
- Department of Biomedical Science, University of Sheffield, Sheffield, United Kingdom
| | - Mike Bowl
- Medical Research Council (MRC), Mammalian Genetics Unit, Harwell, United Kingdom
| | - Walter Marcotti
- Department of Biomedical Science, University of Sheffield, Sheffield, United Kingdom
- * E-mail: (WM); (SDMB)
| | - Steve D. M. Brown
- Medical Research Council (MRC), Mammalian Genetics Unit, Harwell, United Kingdom
- * E-mail: (WM); (SDMB)
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Pham TH, Gao X, Singh G, Hardwidge PR. Escherichia coli virulence protein NleH1 interaction with the v-Crk sarcoma virus CT10 oncogene-like protein (CRKL) governs NleH1 inhibition of the ribosomal protein S3 (RPS3)/nuclear factor κB (NF-κB) pathway. J Biol Chem 2013; 288:34567-74. [PMID: 24145029 DOI: 10.1074/jbc.m113.512376] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
Enterohemorrhagic Escherichia coli and other attaching/effacing bacterial pathogens cause diarrhea in humans. These pathogens use a type III secretion system to inject virulence proteins (effectors) into host cells, some of which inhibit the innate immune system. The enterohemorrhagic E. coli NleH1 effector prevents the nuclear translocation of RPS3 (ribosomal protein S3) to inhibit its participation as a nuclear "specifier" of NF-κB binding to target gene promoters. NleH1 binds to RPS3 and inhibits its phosphorylation on Ser-209 by IκB kinase-β (IKKβ). However, the precise mechanism of this inhibition is unclear. NleH1 possesses a Ser/Thr protein kinase activity that is essential both for its ability to inhibit the RPS3/NF-κB pathway and for full virulence of the attaching/effacing mouse pathogen Citrobacter rodentium. However, neither RPS3 nor IKKβ is a substrate of NleH1 kinase activity. We therefore screened ∼9,000 human proteins to identify NleH1 kinase substrates and identified CRKL (v-Crk sarcoma virus CT10 oncogene-like protein), a substrate of the BCR/ABL kinase. Knockdown of CRKL abundance prevented NleH1 from inhibiting RPS3 nuclear translocation and NF-κB activity. CRKL residues Tyr-198 and Tyr-207 were required for interaction with NleH1. Lys-159, the kinase-active site of NleH1, was necessary for its interaction with CRKL. We also identified CRKL as an IKKβ interaction partner, mediated by CRKL Tyr-198. We propose that the CRKL interaction with IKKβ recruits NleH1 to the IKKβ complex, where NleH1 then inhibits the RPS3/NF-κB pathway.
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Affiliation(s)
- Thanh H Pham
- From the College of Veterinary Medicine, Kansas State University, Manhattan, Kansas 66506 and
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