1
|
Commer B, Schultzhaus Z, Shaw BD. Localization of NPFxD motif-containing proteins in Aspergillus nidulans. Fungal Genet Biol 2020; 141:103412. [PMID: 32445863 DOI: 10.1016/j.fgb.2020.103412] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2020] [Revised: 05/04/2020] [Accepted: 05/10/2020] [Indexed: 12/28/2022]
Abstract
During growth, filamentous fungi produce polarized cells called hyphae. It is generally presumed that polarization of hyphae is dependent upon secretion through the Spitzenkörper, as well as a mechanism called apical recycling, which maintains a balance between the tightly coupled processes of endocytosis and exocytosis. Endocytosis predominates in an annular domain called the sub-apical endocytic collar, which is located in the region of plasma membrane 1-5 μm distal to the Spitzenkörper. It has previously been proposed that one function of the sub-apical endocytic collar is to maintain the apical localization of polarization proteins. These proteins mark areas of polarization at the apices of hyphae. However, as hyphae grow, these proteins are displaced along the membrane and some must then be removed at the sub-apical endocytic collar in order to maintain the hyphoid shape. While endocytosis is fairly well characterized in yeast, comparatively little is known about the process in filamentous fungi. Here, a bioinformatics approach was utilized to identify 39 Aspergillus nidulans proteins that are predicted to be cargo of endocytosis based on the presence of an NPFxD peptide motif. This motif is a necessary endocytic signal sequence first established in Saccharomyces cerevisiae, where it marks proteins for endocytosis through an interaction with the adapter protein Sla1p. It is hypothesized that some proteins that contain this NPFxD peptide sequence in A. nidulans will be potential targets for endocytosis, and therefore will localize either to the endocytic collar or to more proximal polarized regions of the cell, e.g. the apical dome or the Spitzenkörper. To test this, a subset of the motif-containing proteins in A. nidulans was tagged with GFP and the dynamic localization was evaluated. The documented localization patterns support the hypothesis that the motif marks proteins for localization to the polarized cell apex in growing hyphae.
Collapse
Affiliation(s)
- Blake Commer
- Department of Plant Pathology and Microbiology, Texas A&M University, 2132 TAMU, College Station, TX 77843, USA.
| | - Zachary Schultzhaus
- Department of Plant Pathology and Microbiology, Texas A&M University, 2132 TAMU, College Station, TX 77843, USA.
| | - Brian D Shaw
- Department of Plant Pathology and Microbiology, Texas A&M University, 2132 TAMU, College Station, TX 77843, USA.
| |
Collapse
|
2
|
Gao Y, Li L, Xing X, Lin M, Zeng Y, Liu X, Liu J. Coronin 3 negatively regulates G6PC3 in HepG2 cells, as identified by label‑free mass‑spectrometry. Mol Med Rep 2017; 16:3407-3414. [PMID: 28713988 DOI: 10.3892/mmr.2017.7002] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2016] [Accepted: 04/28/2017] [Indexed: 11/06/2022] Open
Abstract
Human coronin 3 is involved in many types of cancers, but the underlying molecular mechanisms require further elucidation. The present study demonstrated that coronin 3 is significantly upregulated in clinical primary hepatocellular carcinoma (HCC) samples by reverse transcription‑quantitative polymerase chain reaction (RT‑qPCR) and immunohistochemical staining. Subsequently, proteins that were regulated by coronin 3 in both coronin 3 overexpressing or knocked down HepG2 cells were analyzed by label free mass spectrometry; overall, 249 proteins were identified to be closely regulated by coronin 3, and those coronin 3 regulated proteins were enriched in cellular, physiological and metabolism processes. By further in‑depth pathway analysis, it was demonstrated that those proteins were involved into 94 different pathways. Finally, the expression levels of glucose‑6‑phosphatase catalytic subunit 3 (G6PC3) were confirmed to be negatively regulated by coronin 3, as determined by RT‑qPCR and western blotting. In conclusion, these results indicated that coronin3 is significantly dysregulated in HCC tumor tissues, and may exert its function via regulating G6PC3 expression. These results provide valuable information for further study of coronin 3‑mediated signaling pathways, and implicate coronin 3 as a potential therapeutic target for HCC.
Collapse
Affiliation(s)
- Yunzhen Gao
- The United Innovation of Mengchao Hepatobiliary Technology Key Laboratory of Fujian, Mengchao Hepatobiliary Hospital of Fujian Medical University, Fuzhou, Fujian 350005, P.R. China
| | - Ling Li
- Liver Disease Center, The First Affiliated Hospital of Fujian Medical University, Fuzhou, Fujian 350005, P.R. China
| | - Xiaohua Xing
- The United Innovation of Mengchao Hepatobiliary Technology Key Laboratory of Fujian, Mengchao Hepatobiliary Hospital of Fujian Medical University, Fuzhou, Fujian 350005, P.R. China
| | - Minjie Lin
- The United Innovation of Mengchao Hepatobiliary Technology Key Laboratory of Fujian, Mengchao Hepatobiliary Hospital of Fujian Medical University, Fuzhou, Fujian 350005, P.R. China
| | - Yongyi Zeng
- The United Innovation of Mengchao Hepatobiliary Technology Key Laboratory of Fujian, Mengchao Hepatobiliary Hospital of Fujian Medical University, Fuzhou, Fujian 350005, P.R. China
| | - Xiaolong Liu
- The United Innovation of Mengchao Hepatobiliary Technology Key Laboratory of Fujian, Mengchao Hepatobiliary Hospital of Fujian Medical University, Fuzhou, Fujian 350005, P.R. China
| | - Jingfeng Liu
- The United Innovation of Mengchao Hepatobiliary Technology Key Laboratory of Fujian, Mengchao Hepatobiliary Hospital of Fujian Medical University, Fuzhou, Fujian 350005, P.R. China
| |
Collapse
|
3
|
Hosseinibarkooie S, Peters M, Torres-Benito L, Rastetter R, Hupperich K, Hoffmann A, Mendoza-Ferreira N, Kaczmarek A, Janzen E, Milbradt J, Lamkemeyer T, Rigo F, Bennett C, Guschlbauer C, Büschges A, Hammerschmidt M, Riessland M, Kye M, Clemen C, Wirth B. The Power of Human Protective Modifiers: PLS3 and CORO1C Unravel Impaired Endocytosis in Spinal Muscular Atrophy and Rescue SMA Phenotype. Am J Hum Genet 2016; 99:647-665. [PMID: 27499521 DOI: 10.1016/j.ajhg.2016.07.014] [Citation(s) in RCA: 123] [Impact Index Per Article: 15.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2016] [Accepted: 07/14/2016] [Indexed: 12/13/2022] Open
Abstract
Homozygous loss of SMN1 causes spinal muscular atrophy (SMA), the most common and devastating childhood genetic motor-neuron disease. The copy gene SMN2 produces only ∼10% functional SMN protein, insufficient to counteract development of SMA. In contrast, the human genetic modifier plastin 3 (PLS3), an actin-binding and -bundling protein, fully protects against SMA in SMN1-deleted individuals carrying 3-4 SMN2 copies. Here, we demonstrate that the combinatorial effect of suboptimal SMN antisense oligonucleotide treatment and PLS3 overexpression-a situation resembling the human condition in asymptomatic SMN1-deleted individuals-rescues survival (from 14 to >250 days) and motoric abilities in a severe SMA mouse model. Because PLS3 knockout in yeast impairs endocytosis, we hypothesized that disturbed endocytosis might be a key cellular mechanism underlying impaired neurotransmission and neuromuscular junction maintenance in SMA. Indeed, SMN deficit dramatically reduced endocytosis, which was restored to normal levels by PLS3 overexpression. Upon low-frequency electro-stimulation, endocytotic FM1-43 (SynaptoGreen) uptake in the presynaptic terminal of neuromuscular junctions was restored to control levels in SMA-PLS3 mice. Moreover, proteomics and biochemical analysis revealed CORO1C, another F-actin binding protein, whose direct binding to PLS3 is dependent on calcium. Similar to PLS3 overexpression, CORO1C overexpression restored fluid-phase endocytosis in SMN-knockdown cells by elevating F-actin amounts and rescued the axonal truncation and branching phenotype in Smn-depleted zebrafish. Our findings emphasize the power of genetic modifiers to unravel the cellular pathomechanisms underlying SMA and the power of combinatorial therapy based on splice correction of SMN2 and endocytosis improvement to efficiently treat SMA.
Collapse
|
4
|
Srivastava R, Prasadareddy Kajuluri L, Pathak N, Gupta CM, Sahasrabuddhe AA. Oligomerization of coronin: Implication on actin filament length inLeishmania. Cytoskeleton (Hoboken) 2016; 72:621-32. [DOI: 10.1002/cm.21269] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2015] [Revised: 10/27/2015] [Accepted: 12/07/2015] [Indexed: 01/02/2023]
Affiliation(s)
- Rashmi Srivastava
- Molecular and Structural Biology Division; CSIR-Central Drug Research Institute, Jankipuram Extension, Sector-10; Lucknow India
- Department of Biosciences; Integral University; Lucknow India
| | - Lova Prasadareddy Kajuluri
- Molecular and Structural Biology Division; CSIR-Central Drug Research Institute, Jankipuram Extension, Sector-10; Lucknow India
| | - Neelam Pathak
- Department of Biosciences; Integral University; Lucknow India
| | - Chhitar M. Gupta
- Institute of Bioinformatics and Applied Biotechnology; Bangalore India
| | - Amogh A. Sahasrabuddhe
- Molecular and Structural Biology Division; CSIR-Central Drug Research Institute, Jankipuram Extension, Sector-10; Lucknow India
| |
Collapse
|
5
|
Eriksson A, Williams MJ, Voisin S, Hansson I, Krishnan A, Philippot G, Yamskova O, Herisson FM, Dnyansagar R, Moschonis G, Manios Y, Chrousos GP, Olszewski PK, Frediksson R, Schiöth HB. Implication of coronin 7 in body weight regulation in humans, mice and flies. BMC Neurosci 2015; 16:13. [PMID: 25887538 PMCID: PMC4364644 DOI: 10.1186/s12868-015-0151-9] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2014] [Accepted: 02/25/2015] [Indexed: 12/22/2022] Open
Abstract
Background Obesity is a growing global concern with strong associations with cardiovascular disease, cancer and type-2 diabetes. Although various genome-wide association studies have identified more than 40 genes associated with obesity, these genes cannot fully explain the heritability of obesity, suggesting there may be other contributing factors, including epigenetic effects. Results We performed genome wide DNA methylation profiling comparing normal-weight and obese 9–13 year old children to investigate possible epigenetic changes correlated with obesity. Of note, obese children had significantly lower methylation levels at a CpG site located near coronin 7 (CORO7), which encodes a tryptophan-aspartic acid dipeptide (WD)-repeat containing protein most likely involved in Golgi complex morphology and function. Anatomical profiling of coronin 7 (Coro7) mRNA expression in mice revealed that it is highly expressed in appetite and energy balance regulating regions, including the hypothalamus, striatum and locus coeruleus, the main noradrenergic brain site. Interestingly, we found that food deprivation in mice downregulates hypothalamic Coro7 mRNA levels, and injecting ethanol, an appetite stimulant, increased the number of Coro7 expressing cells in the locus coeruleus. Finally, by employing the genetically-tractable Drosophila melanogaster model we were able to demonstrate an evolutionarily conserved metabolic function for the CORO7 homologue pod1. Knocking down the pod1 in the Drosophila adult nervous system increased their resistance to starvation. Furthermore, feeding flies a high-calorie diet significantly increased pod1 expression. Conclusion We conclude that coronin 7 is involved in the regulation of energy homeostasis and this role stems, to some degree, from the effect on feeding for calories and reward.
Collapse
Affiliation(s)
- Anders Eriksson
- Department of Neuroscience, Functional Pharmacology, Uppsala University, Husargatan 3, Box 593, Uppsala, 75 124, Sweden.
| | - Michael J Williams
- Department of Neuroscience, Functional Pharmacology, Uppsala University, Husargatan 3, Box 593, Uppsala, 75 124, Sweden.
| | - Sarah Voisin
- Department of Neuroscience, Functional Pharmacology, Uppsala University, Husargatan 3, Box 593, Uppsala, 75 124, Sweden.
| | - Ida Hansson
- Department of Neuroscience, Functional Pharmacology, Uppsala University, Husargatan 3, Box 593, Uppsala, 75 124, Sweden.
| | - Arunkumar Krishnan
- Department of Neuroscience, Functional Pharmacology, Uppsala University, Husargatan 3, Box 593, Uppsala, 75 124, Sweden.
| | - Gaetan Philippot
- Department of Neuroscience, Functional Pharmacology, Uppsala University, Husargatan 3, Box 593, Uppsala, 75 124, Sweden.
| | - Olga Yamskova
- Department of Neuroscience, Functional Pharmacology, Uppsala University, Husargatan 3, Box 593, Uppsala, 75 124, Sweden.
| | - Florence M Herisson
- Department of Biological Sciences, University of Waikato, Hamilton, New Zealand.
| | - Rohit Dnyansagar
- Department of Neuroscience, Functional Pharmacology, Uppsala University, Husargatan 3, Box 593, Uppsala, 75 124, Sweden.
| | - George Moschonis
- Department of Nutrition and Dietetics, Harokopio University, Athens, Greece.
| | - Yannis Manios
- Department of Nutrition and Dietetics, Harokopio University, Athens, Greece.
| | - George P Chrousos
- First Department of Pediatrics, Aghia Sophia Children's Hospital, Athens University Medical School, Athens, Greece.
| | - Pawel K Olszewski
- Department of Biological Sciences, University of Waikato, Hamilton, New Zealand.
| | - Robert Frediksson
- Department of Neuroscience, Functional Pharmacology, Uppsala University, Husargatan 3, Box 593, Uppsala, 75 124, Sweden.
| | - Helgi B Schiöth
- Department of Neuroscience, Functional Pharmacology, Uppsala University, Husargatan 3, Box 593, Uppsala, 75 124, Sweden.
| |
Collapse
|
6
|
Cryo-EM reveals different coronin binding modes for ADP- and ADP-BeFx actin filaments. Nat Struct Mol Biol 2014; 21:1075-81. [PMID: 25362487 PMCID: PMC4388421 DOI: 10.1038/nsmb.2907] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2014] [Accepted: 09/29/2014] [Indexed: 11/16/2022]
Abstract
Essential cellular processes involving the actin cytoskeleton are regulated by auxiliary proteins which can sense the nucleotide state of actin. Here we report cryo electron microscopy (cryoEM) structures at 8.6 Å resolution for ADP- and ADP-BeFx- (mimicking ADP-Pi) bound actin filaments in complex with the β-propeller domain (residues 1–600) of yeast coronin 1 (crn1). Our structures identify the main differences in the interaction of coronin with the two nucleotide states of F-actin. We derived pseudo-atomic models by fitting the atomic structures of actin and coronin into these structures. The identified binding interfaces on actin were confirmed by chemical crosslinking, fluorescence spectroscopy and actin mutagenesis. Importantly, the structures of actin and coronin mapped in this study offer a structural explanation for the nucleotide-dependent effects of coronin on cofilin-assisted remodeling of F-actin.
Collapse
|
7
|
Shina MC, Müller-Taubenberger A, Ünal C, Schleicher M, Steinert M, Eichinger L, Müller R, Blau-Wasser R, Glöckner G, Noegel AA. Redundant and unique roles of coronin proteins in Dictyostelium. Cell Mol Life Sci 2011; 68:303-13. [PMID: 20640912 PMCID: PMC11114531 DOI: 10.1007/s00018-010-0455-y] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2010] [Revised: 05/23/2010] [Accepted: 07/05/2010] [Indexed: 11/26/2022]
Abstract
Dictyostelium discoideum harbors a short (CRN12) and a long coronin (CRN7) composed of one and two beta-propellers, respectively. They are primarily present in the cell cortex and cells lacking CRN12 (corA⁻) or CRN7 (corB⁻) have defects in actin driven processes. We compared the characteristics of a mutant cell line (corA⁻/corB⁻) lacking CRN12 and CRN7 with the single mutants focusing on cytokinesis, phagocytosis, chemotaxis and development. Cytokinesis, uptake of small particles, and developmental defects were not enhanced in the corA⁻/corB⁻ strain as compared to the single mutants, whereas motility and phagocytosis of yeast particles were more severely impaired. It appears that although both proteins affect the same processes they do not act in a redundant manner. Rather, they often act antagonistically, which is in accordance with their proposed roles in the actin cytoskeleton where CRN12 acts in actin disassembly whereas CRN7 stabilizes actin filaments and protects them from disassembly.
Collapse
Affiliation(s)
- Maria C. Shina
- Institute for Biochemistry I, Center for Molecular Medicine Cologne (CMMC) and Cologne Excellence Cluster on Cellular Stress Responses in Aging-Associated Diseases (CECAD), Medical Faculty, University of Cologne, 50931 Cologne, Germany
| | - Annette Müller-Taubenberger
- Institute for Cell Biology and Center for Integrated Protein Science (CIPSM), Ludwig Maximilians University Munich, 80336 Munich, Germany
| | - Can Ünal
- Institute for Microbiology, Technical University Braunschweig, 38106 Brunswick, Germany
- Present Address: Medical Microbiology, Department of Laboratory Medicine, Malmö, University Hospital, Lund University, 205 02 Malmö, Sweden
| | - Michael Schleicher
- Institute for Cell Biology and Center for Integrated Protein Science (CIPSM), Ludwig Maximilians University Munich, 80336 Munich, Germany
| | - Michael Steinert
- Institute for Microbiology, Technical University Braunschweig, 38106 Brunswick, Germany
| | - Ludwig Eichinger
- Institute for Biochemistry I, Center for Molecular Medicine Cologne (CMMC) and Cologne Excellence Cluster on Cellular Stress Responses in Aging-Associated Diseases (CECAD), Medical Faculty, University of Cologne, 50931 Cologne, Germany
| | - Rolf Müller
- Institute for Biochemistry I, Center for Molecular Medicine Cologne (CMMC) and Cologne Excellence Cluster on Cellular Stress Responses in Aging-Associated Diseases (CECAD), Medical Faculty, University of Cologne, 50931 Cologne, Germany
| | - Rosemarie Blau-Wasser
- Institute for Biochemistry I, Center for Molecular Medicine Cologne (CMMC) and Cologne Excellence Cluster on Cellular Stress Responses in Aging-Associated Diseases (CECAD), Medical Faculty, University of Cologne, 50931 Cologne, Germany
| | - Gernot Glöckner
- Leibniz Institute for Freshwater Ecology and Inland Fisheries, Müggelseedamm 301, 12587 Berlin, Germany
| | - Angelika A. Noegel
- Institute for Biochemistry I, Center for Molecular Medicine Cologne (CMMC) and Cologne Excellence Cluster on Cellular Stress Responses in Aging-Associated Diseases (CECAD), Medical Faculty, University of Cologne, 50931 Cologne, Germany
- Institute for Biochemistry I, Medical Faculty, University of Cologne, Joseph-Stelzmann-Str. 52, 50931 Cologne, Germany
| |
Collapse
|
8
|
Abstract
Mutations in the gene encoding LRRK2 (leucine-rich repeat kinase 2) were first identified in 2004 and have since been shown to be the single most common cause of inherited Parkinson’s disease. The protein is a large GTP-regulated serine/threonine kinase that additionally contains several protein–protein interaction domains. In the present review, we discuss three important, but unresolved, questions concerning LRRK2. We first ask: what is the normal function of LRRK2? Related to this, we discuss the evidence of LRRK2 activity as a GTPase and as a kinase and the available data on protein–protein interactions. Next we raise the question of how mutations affect LRRK2 function, focusing on some slightly controversial results related to the kinase activity of the protein in a variety of in vitro systems. Finally, we discuss what the possible mechanisms are for LRRK2-mediated neurotoxicity, in the context of known activities of the protein.
Collapse
|