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Troumpoukis D, Vasileiou AR, Siskos N, Stylianopoulou E, Ypsilantis P, Skavdis G, Grigoriou ME. Characterization of the Abracl-Expressing Cell Populations in the Embryonic Mammalian Telencephalon. Biomolecules 2023; 13:1337. [PMID: 37759737 PMCID: PMC10527439 DOI: 10.3390/biom13091337] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2023] [Revised: 08/28/2023] [Accepted: 08/29/2023] [Indexed: 09/29/2023] Open
Abstract
Abracl (ABRA C-terminal-like protein) is a small, non-typical winged-helix protein that shares similarity with the C-terminal domain of the protein ABRA (Actin-Binding Rho-Activating protein). The role of Abracl in the cell remains elusive, although in cancer cells, it has been implicated in proliferation, migration and actin dynamics. Our previous study showed that Abracl mRNA was expressed in the dividing cells of the subpallial subventricular zone (SVZ), in the developing cortical plate (CP), and in the diencephalic SVZ; however, the molecular identities of the Abracl-expressing cell populations were not defined in that work. In this study, we use double immunofluorescence to characterize the expression of Abracl on sections of embryonic murine (E11.5-E18.5) and feline (E30/31-E33/34) telencephalon; to this end, we use a battery of well-known molecular markers of cycling (Ki67, Ascl1, Dlx2) or post-mitotic (Tubb3, Gad65/67, Lhx6 and Tbr1) cells. Our experiments show that Abracl protein has, compared to the mRNA, a broader expression domain, including, apart from proliferating cells of the subpallial and diencephalic SVZ, post-mitotic cells occupying the subpallial and pallial mantle (including the CP), as well as subpallial-derived migrating interneurons. Interestingly, in late embryonic developmental stages, Abracl was also transiently detected in major telencephalic fiber tracts.
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Affiliation(s)
- Dimitrios Troumpoukis
- Laboratory of Developmental Biology & Molecular Neurobiology, Department of Molecular Biology & Genetics, Democritus University of Thrace, GR-681 00 Alexandroupolis, Greece (E.S.)
| | - Andreas Rafail Vasileiou
- Laboratory of Developmental Biology & Molecular Neurobiology, Department of Molecular Biology & Genetics, Democritus University of Thrace, GR-681 00 Alexandroupolis, Greece (E.S.)
- Laboratory of Molecular Regulation & Diagnostic Technology, Department of Molecular Biology & Genetics, Democritus University of Thrace, GR-681 00 Alexandroupolis, Greece;
| | - Nikistratos Siskos
- Laboratory of Developmental Biology & Molecular Neurobiology, Department of Molecular Biology & Genetics, Democritus University of Thrace, GR-681 00 Alexandroupolis, Greece (E.S.)
| | - Electra Stylianopoulou
- Laboratory of Developmental Biology & Molecular Neurobiology, Department of Molecular Biology & Genetics, Democritus University of Thrace, GR-681 00 Alexandroupolis, Greece (E.S.)
- Laboratory of Molecular Regulation & Diagnostic Technology, Department of Molecular Biology & Genetics, Democritus University of Thrace, GR-681 00 Alexandroupolis, Greece;
| | - Petros Ypsilantis
- Laboratory of Experimental Surgery and Surgical Research, Department of Medicine, Democritus University of Thrace, GR-681 00 Alexandroupolis, Greece
| | - George Skavdis
- Laboratory of Molecular Regulation & Diagnostic Technology, Department of Molecular Biology & Genetics, Democritus University of Thrace, GR-681 00 Alexandroupolis, Greece;
| | - Maria E. Grigoriou
- Laboratory of Developmental Biology & Molecular Neurobiology, Department of Molecular Biology & Genetics, Democritus University of Thrace, GR-681 00 Alexandroupolis, Greece (E.S.)
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Liu B, Guan Y, Wang M, Han Y, Wang W, Wang Y, Wu P. ABRACL as a potential prognostic biomarker and correlates with immune infiltration in low-grade gliomas. INTERDISCIPLINARY NEUROSURGERY 2022. [DOI: 10.1016/j.inat.2022.101618] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022] Open
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Beepat SS, Davy SK, Oakley CA, Mashini A, Peng L, Bell JJ. Increased cellular detoxification, cytoskeletal activities and protein transport explain physiological stress in a lagoon sponge. J Exp Biol 2021; 224:273478. [PMID: 34661236 DOI: 10.1242/jeb.242820] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2021] [Accepted: 10/13/2021] [Indexed: 11/20/2022]
Abstract
Tropical lagoon-inhabiting organisms live in highly irradiated ecosystems and are particularly susceptible to thermal stress resulting from climate change. However, despite living close to their thermal maxima, stress response mechanisms found in these organisms are poorly understood. We used a novel physiological-proteomic approach for sponges to describe the stress response mechanisms of the lagoon-inhabiting sponge Amphimedon navalis, when exposed to elevated seawater temperatures of +2°C and +4°C relative to a 26°C ambient temperature for 4 weeks. After 4 weeks of thermal exposure, the buoyant weight of the sponge experienced a significant decline, while its pumping rates and oxygen consumption rates significantly increased. Proteome dynamics revealed 50 differentially abundant proteins in sponges exposed to elevated temperature, suggesting that shifts in the sponge proteome were potential drivers of physiological dysfunction. Thermal stress promoted an increase in detoxification proteins, such as catalase, suggesting that an excess of reactive oxygen species in sponge cells was responsible for the significant increase in oxygen consumption. Elevated temperature also disrupted cellular growth and cell proliferation, promoting the loss of sponge biomass, and the high abundance of multiple α-tubulin chain proteins also indicated an increase in cytoskeletal activities within sponge cells, which may have induced the increase in sponge pumping rate. Our results show that sustained thermal exposure in susceptible lagoonal sponges may induce significant disruption of cellular homeostasis, leading to physiological dysfunction, and that a combined physiological-proteomic approach may provide new insights into physiological functions and cellular processes occurring in sponges.
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Affiliation(s)
- Sandeep S Beepat
- School of Biological Sciences, Victoria University of Wellington, Wellington 6140, New Zealand
| | - Simon K Davy
- School of Biological Sciences, Victoria University of Wellington, Wellington 6140, New Zealand
| | - Clinton A Oakley
- School of Biological Sciences, Victoria University of Wellington, Wellington 6140, New Zealand
| | - Amirhossein Mashini
- School of Biological Sciences, Victoria University of Wellington, Wellington 6140, New Zealand
| | - Lifeng Peng
- School of Biological Sciences, Victoria University of Wellington, Wellington 6140, New Zealand
| | - James J Bell
- School of Biological Sciences, Victoria University of Wellington, Wellington 6140, New Zealand
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miR-145-5p Inhibits the Proliferation, Migration, and Invasion of Esophageal Carcinoma Cells by Targeting ABRACL. BIOMED RESEARCH INTERNATIONAL 2021; 2021:6692544. [PMID: 33728339 PMCID: PMC7937467 DOI: 10.1155/2021/6692544] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/23/2020] [Revised: 01/26/2021] [Accepted: 02/03/2021] [Indexed: 12/31/2022]
Abstract
Objective The study is aimed at investigating the regulatory relationship between miR-145-5p and ABRACL, and has tried at clarifying the mechanisms underlying the proliferation, migration, and invasion of esophageal carcinoma (EC) cells. Methods Gene expression data related to EC were accessed from TCGA database, and the “edgeR” package was used to screen differentially expressed genes. TargetScan, miRDB, and miRTarBase databases were used to predict potential targets for the target miRNA miR-145-5p. qRT-PCR and Western blot were performed to assess the expression of miR-145-5p and ABRACL in EC cells. Dual-luciferase reporter assay was performed to validate the targeting relationship between miR-145-5p and ABRACL. Functional experiments including CCK-8 assay, Transwell migration, and invasion assays were used to detect the proliferation, migration, and invasion of EC cells. Results The expression of miR-145-5p was significantly decreased in EC, while ABRACL was remarkably increased. In addition, there was a negative correlation identified between miR-145-5p and ABRACL mRNA. Overexpressing miR-145-5p was able to suppress cell proliferation, migration, and invasion, whereas silencing miR-145-5p posed an opposite effect. In the meantime, ABRACL was identified as a direct target of miR-145-5p by dual-luciferase reporter assay. Furthermore, miR-145-5p could inhibit the expression of ABRACL, in turn inhibiting the proliferation, migration, and invasion of EC cells. Conclusion miR-145-5p functions on the proliferation, migration, and invasion of EC cells via targeting ABRACL, and it may be a novel therapeutic target in EC treatment.
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Hsiao BY, Chen CH, Chi HY, Yen PR, Yu YZ, Lin CH, Pang TL, Lin WC, Li ML, Yeh YC, Chou TY, Chen MY. Human Costars Family Protein ABRACL Modulates Actin Dynamics and Cell Migration and Associates with Tumorigenic Growth. Int J Mol Sci 2021; 22:ijms22042037. [PMID: 33670794 PMCID: PMC7922284 DOI: 10.3390/ijms22042037] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2021] [Accepted: 02/16/2021] [Indexed: 12/16/2022] Open
Abstract
Regulation of cellular actin dynamics is pivotal in driving cell motility. During cancer development, cells migrate to invade and spread; therefore, dysregulation of actin regulators is often associated with cancer progression. Here we report the role of ABRACL, a human homolog of the Dictyostelium actin regulator Costars, in migration and tumorigenic growth of cancer cells. We found a correlation between ABRACL expression and the migratory ability of cancer cells. Cell staining revealed the colocalization of ABRACL and F-actin signals at the leading edge of migrating cells. Analysis of the relative F-/G-actin contents in cells lacking or overexpressing ABRACL suggested that ABRACL promotes cellular actin distribution to the polymerized fraction. Physical interaction between ABRACL and cofilin was supported by immunofluorescence staining and proximity ligation. Additionally, ABRACL hindered cofilin-simulated pyrene F-actin fluorescence decay in vitro, indicating a functional interplay. Lastly, analysis on a colorectal cancer cohort demonstrated that high ABRACL expression was associated with distant metastasis, and further exploration showed that depletion of ABRACL expression in colon cancer cells resulted in reduced cell proliferation and tumorigenic growth. Together, results suggest that ABRACL modulates actin dynamics through its interaction with cofilin and thereby regulates cancer cell migration and participates in cancer pathogenesis.
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Affiliation(s)
- Bo-Yuan Hsiao
- Institute of Biochemistry and Molecular Biology, National Yang-Ming University, Taipei 11221, Taiwan; (B.-Y.H.); (C.-H.C.); (H.-Y.C.); (P.-R.Y.); (Y.-Z.Y.); (T.-L.P.); (W.-C.L.); (M.-L.L.); (T.-Y.C.)
| | - Chia-Hsin Chen
- Institute of Biochemistry and Molecular Biology, National Yang-Ming University, Taipei 11221, Taiwan; (B.-Y.H.); (C.-H.C.); (H.-Y.C.); (P.-R.Y.); (Y.-Z.Y.); (T.-L.P.); (W.-C.L.); (M.-L.L.); (T.-Y.C.)
| | - Ho-Yi Chi
- Institute of Biochemistry and Molecular Biology, National Yang-Ming University, Taipei 11221, Taiwan; (B.-Y.H.); (C.-H.C.); (H.-Y.C.); (P.-R.Y.); (Y.-Z.Y.); (T.-L.P.); (W.-C.L.); (M.-L.L.); (T.-Y.C.)
| | - Pei-Ru Yen
- Institute of Biochemistry and Molecular Biology, National Yang-Ming University, Taipei 11221, Taiwan; (B.-Y.H.); (C.-H.C.); (H.-Y.C.); (P.-R.Y.); (Y.-Z.Y.); (T.-L.P.); (W.-C.L.); (M.-L.L.); (T.-Y.C.)
| | - Ying-Zhen Yu
- Institute of Biochemistry and Molecular Biology, National Yang-Ming University, Taipei 11221, Taiwan; (B.-Y.H.); (C.-H.C.); (H.-Y.C.); (P.-R.Y.); (Y.-Z.Y.); (T.-L.P.); (W.-C.L.); (M.-L.L.); (T.-Y.C.)
| | - Chia-Hsin Lin
- Faculty of Medicine, School of Medicine, National Yang-Ming University, Taipei 11221, Taiwan;
| | - Te-Ling Pang
- Institute of Biochemistry and Molecular Biology, National Yang-Ming University, Taipei 11221, Taiwan; (B.-Y.H.); (C.-H.C.); (H.-Y.C.); (P.-R.Y.); (Y.-Z.Y.); (T.-L.P.); (W.-C.L.); (M.-L.L.); (T.-Y.C.)
| | - Wei-Chi Lin
- Institute of Biochemistry and Molecular Biology, National Yang-Ming University, Taipei 11221, Taiwan; (B.-Y.H.); (C.-H.C.); (H.-Y.C.); (P.-R.Y.); (Y.-Z.Y.); (T.-L.P.); (W.-C.L.); (M.-L.L.); (T.-Y.C.)
| | - Min-Lun Li
- Institute of Biochemistry and Molecular Biology, National Yang-Ming University, Taipei 11221, Taiwan; (B.-Y.H.); (C.-H.C.); (H.-Y.C.); (P.-R.Y.); (Y.-Z.Y.); (T.-L.P.); (W.-C.L.); (M.-L.L.); (T.-Y.C.)
| | - Yi-Chen Yeh
- Department of Pathology and Laboratory Medicine, Taipei Veterans General Hospital, Taipei 11217, Taiwan;
| | - Teh-Ying Chou
- Institute of Biochemistry and Molecular Biology, National Yang-Ming University, Taipei 11221, Taiwan; (B.-Y.H.); (C.-H.C.); (H.-Y.C.); (P.-R.Y.); (Y.-Z.Y.); (T.-L.P.); (W.-C.L.); (M.-L.L.); (T.-Y.C.)
- Department of Pathology and Laboratory Medicine, Taipei Veterans General Hospital, Taipei 11217, Taiwan;
- Institute of Clinical Medicine, National Yang-Ming University, Taipei 11221, Taiwan
- Cancer Progression Research Center, National Yang-Ming University, Taipei 11221, Taiwan
| | - Mei-Yu Chen
- Institute of Biochemistry and Molecular Biology, National Yang-Ming University, Taipei 11221, Taiwan; (B.-Y.H.); (C.-H.C.); (H.-Y.C.); (P.-R.Y.); (Y.-Z.Y.); (T.-L.P.); (W.-C.L.); (M.-L.L.); (T.-Y.C.)
- Faculty of Medicine, School of Medicine, National Yang-Ming University, Taipei 11221, Taiwan;
- Cancer Progression Research Center, National Yang-Ming University, Taipei 11221, Taiwan
- Correspondence: ; Tel.: +886-(02)-2826-7269
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Hiltunen AE, Kangas SM, Ohlmeier S, Pietilä I, Hiltunen J, Tanila H, McKerlie C, Govindan S, Tuominen H, Kaarteenaho R, Hallman M, Uusimaa J, Hinttala R. Variant in NHLRC2 leads to increased hnRNP C2 in developing neurons and the hippocampus of a mouse model of FINCA disease. Mol Med 2020; 26:123. [PMID: 33297935 PMCID: PMC7724728 DOI: 10.1186/s10020-020-00245-4] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2020] [Accepted: 11/18/2020] [Indexed: 12/13/2022] Open
Abstract
Background FINCA disease is a pediatric cerebropulmonary disease caused by variants in the NHL repeat-containing 2 (NHLRC2) gene. Neurological symptoms are among the first manifestations of FINCA disease, but the consequences of NHLRC2 deficiency in the central nervous system are currently unexplored. Methods The orthologous mouse gene is essential for development, and its complete loss leads to early embryonic lethality. In the current study, we used CRISPR/Cas9 to generate an Nhlrc2 knockin (KI) mouse line, harboring the FINCA patient missense mutation (c.442G > T, p.Asp148Tyr). A FINCA mouse model, resembling the compound heterozygote genotype of FINCA patients, was obtained by crossing the KI and Nhlrc2 knockout mouse lines. To reveal NHLRC2-interacting proteins in developing neurons, we compared cortical neuronal precursor cells of E13.5 FINCA and wild-type mouse embryos by two-dimensional difference gel electrophoresis. Results Despite the significant decrease in NHLRC2, the mice did not develop severe early onset multiorgan disease in either sex. We discovered 19 altered proteins in FINCA neuronal precursor cells; several of which are involved in vesicular transport pathways and actin dynamics which have been previously reported in other cell types including human to have an association with dysfunctional NHLRC2. Interestingly, isoform C2 of hnRNP C1/C2 was significantly increased in both developing neurons and the hippocampus of adult female FINCA mice, connecting NHLRC2 dysfunction with accumulation of RNA binding protein. Conclusions We describe here the first NHLRC2-deficient mouse model to overcome embryonic lethality, enabling further studies on predisposing and causative mechanisms behind FINCA disease. Our novel findings suggest that disrupted RNA metabolism may contribute to the neurodegeneration observed in FINCA patients.
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Affiliation(s)
- Anniina E Hiltunen
- Medical Research Center Oulu and PEDEGO Research Unit, University of Oulu and Oulu University Hospital, PO Box 5000, 90014, Oulu, Finland. .,Biocenter Oulu, University of Oulu, Oulu, Finland.
| | - Salla M Kangas
- Medical Research Center Oulu and PEDEGO Research Unit, University of Oulu and Oulu University Hospital, PO Box 5000, 90014, Oulu, Finland.,Biocenter Oulu, University of Oulu, Oulu, Finland
| | - Steffen Ohlmeier
- Proteomics Core Facility, Biocenter Oulu, Faculty of Biochemistry and Molecular Medicine, University of Oulu, PO Box 5400, Oulu, 90014, Finland
| | - Ilkka Pietilä
- Medical Research Center Oulu and PEDEGO Research Unit, University of Oulu and Oulu University Hospital, PO Box 5000, 90014, Oulu, Finland.,Department of Immunology, Genetics and Pathology, Science for Life Laboratory, Uppsala University, Rudbeck Laboratory, Uppsala, Sweden
| | - Jori Hiltunen
- Medical Research Center Oulu and PEDEGO Research Unit, University of Oulu and Oulu University Hospital, PO Box 5000, 90014, Oulu, Finland
| | - Heikki Tanila
- A.I. Virtanen Institute, University of Eastern Finland, Kuopio, Finland
| | - Colin McKerlie
- The Hospital for Sick Children, Toronto, Canada.,Faculty of Medicine, University of Toronto, Toronto, Canada
| | - Subashika Govindan
- Tissue Engineering Laboratory, Hepia/HES-SO, University of Applied Sciences Western Switzerland, Geneva, Switzerland
| | - Hannu Tuominen
- Department of Pathology, Cancer and Translational Medicine Research Unit, University of Oulu, Oulu, Finland.,Department of Pathology, Oulu University Hospital, Oulu, Finland
| | - Riitta Kaarteenaho
- Research Unit of Internal Medicine, Respiratory Research, University of Oulu, Oulu, Finland.,Medical Research Center Oulu and Unit of Internal Medicine and Respiratory Medicine, Oulu University Hospital, Oulu, Finland
| | - Mikko Hallman
- Medical Research Center Oulu and PEDEGO Research Unit, University of Oulu and Oulu University Hospital, PO Box 5000, 90014, Oulu, Finland
| | - Johanna Uusimaa
- Medical Research Center Oulu and PEDEGO Research Unit, University of Oulu and Oulu University Hospital, PO Box 5000, 90014, Oulu, Finland.,Clinic for Children and Adolescents, Paediatric Neurology Unit, Oulu University Hospital, Oulu, Finland
| | - Reetta Hinttala
- Medical Research Center Oulu and PEDEGO Research Unit, University of Oulu and Oulu University Hospital, PO Box 5000, 90014, Oulu, Finland.,Biocenter Oulu, University of Oulu, Oulu, Finland
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Wang D, Liu H, Ren C, Wang L. High Expression of ABRACL Is Associated with Tumorigenesis and Affects Clinical Outcome in Gastric Cancer. Genet Test Mol Biomarkers 2019; 23:91-97. [PMID: 30676103 DOI: 10.1089/gtmb.2018.0195] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022] Open
Abstract
BACKGROUND The ABRA C-terminal like (ABRACL) protein belongs to a novel family of low-molecular weight proteins that increase actin dynamics and cell motility. It is involved in various diseases including cancer; however, its role in gastric cancer is unclear. In this study, the expression of ABRACL in gastric cancer and its relationships with patients' clinicopathological features and survival are examined. METHODS Sample expression profiles were downloaded from the Gene Expression Omnibus database and the Cancer Genome Atlas. ABRACL expression at the protein level in normal gastric and gastric cancer tissues was compared by using immunohistochemistry staining data provided by the Human Protein Atlas. Correlations between ABRACL expression and clinicopathological features are analyzed by chi-square tests. Patient survival was evaluated by Kaplan-Meier analysis. RESULTS ABRACL expression is upregulated in gastric cancer tissues than in normal tissues. High ABRACL levels indicated a poor prognosis. ABRACL expression (low ABRACL, n = 96; high ABRACL, n = 96) in gastric cancer tissues (primary data from GSE15459) is significantly correlated with poor overall survival (χ2 = 4.078, p = 0.043; log-rank test). ABRACL protein levels (low ABRACL, n = 172, high ABRACL, n = 171) in gastric cancer tissues (primary data from www.kmplot.com ) are significantly correlated with poor overall survival (χ2 = 4.305, p = 0.038, log-rank test). CONCLUSIONS Our results indicate that ABRACL is highly expressed in gastric cancer and is a potential prognostic marker and therapeutic target for this disease.
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Affiliation(s)
- Dazhi Wang
- 1 Pharmacy Department, Qingdao Municipal Hospital, Qingdao, China.,2 Cheeloo College of Medicine, Shandong University, Jinan, China
| | - HuaQiang Liu
- 1 Pharmacy Department, Qingdao Municipal Hospital, Qingdao, China
| | - Chunling Ren
- 3 Pharmacy Department, Qingdao Women and Children's Hospital, School of Medicine, Qingdao University, Qingdao, China
| | - Lanying Wang
- 1 Pharmacy Department, Qingdao Municipal Hospital, Qingdao, China
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Ura B, Monasta L, Arrigoni G, Franchin C, Radillo O, Peterlunger I, Ricci G, Scrimin F. A proteomic approach for the identification of biomarkers in endometrial cancer uterine aspirate. Oncotarget 2017; 8:109536-109545. [PMID: 29312627 PMCID: PMC5752540 DOI: 10.18632/oncotarget.22725] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2017] [Accepted: 11/01/2017] [Indexed: 12/31/2022] Open
Abstract
Endometrial cancer arises from the endometrium. It has a slow progression and a reported survival rate of 75%. The identification of soluble biomarkers in the uterine aspirate may be very useful for its early diagnosis. Uterine aspirates from 10 patients with endometrial cancer and 6 non-endometrial cancer controls were analyzed by two-dimensional gel electrophoresis coupled with mass spectrometry and western blotting for data verification. A total of 25 proteins with fold change in %V ≥2 or ≤0.5 in intensity were observed to change significantly (P<0.05). From the discovery phase, four proteins (costars family protein ABRACL, phosphoglycerate mutase 2, fibrinogen beta chain, annexin A3) were found to be present in the uterine aspirate of endometrial cancers and not in healthy aspirates. Western blotting verification data demonstrated that costars family protein ABRACL, phosphoglycerate mutase 2 were present only in endometrial cancer uterine aspirate while fibrinogen beta chain, annexin A3 were also present in healthy aspirates. To our knowledge, phosphoglycerate mutase 2 has not been previously associated with endometrial cancer. In this study we demonstrate that uterine aspirates are a promising biological fluid in which to identify endometrial cancer biomarkers. In our opinion proteins like costars family protein ABRACL and phosphoglycerate mutase 2 have a great potential to reach the clinical phase after a validation phase.
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Affiliation(s)
- Blendi Ura
- Institute for Maternal and Child Health-IRCCS "Burlo Garofolo", Trieste, Italy
| | - Lorenzo Monasta
- Institute for Maternal and Child Health-IRCCS "Burlo Garofolo", Trieste, Italy
| | - Giorgio Arrigoni
- Department of Biomedical Sciences, University of Padova, Padova, Italy.,Proteomics Center, University of Padova and Azienda Ospedaliera di Padova, Padova, Italy
| | - Cinzia Franchin
- Department of Biomedical Sciences, University of Padova, Padova, Italy.,Proteomics Center, University of Padova and Azienda Ospedaliera di Padova, Padova, Italy
| | - Oriano Radillo
- Institute for Maternal and Child Health-IRCCS "Burlo Garofolo", Trieste, Italy
| | - Isabel Peterlunger
- Institute for Maternal and Child Health-IRCCS "Burlo Garofolo", Trieste, Italy
| | - Giuseppe Ricci
- Institute for Maternal and Child Health-IRCCS "Burlo Garofolo", Trieste, Italy.,Department of Medical, Surgery and Health Sciences, University of Trieste, Trieste, Italy
| | - Federica Scrimin
- Institute for Maternal and Child Health-IRCCS "Burlo Garofolo", Trieste, Italy
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Wilking-Busch MJ, Ndiaye MA, Liu X, Ahmad N. RNA interference-mediated knockdown of SIRT1 and/or SIRT2 in melanoma: Identification of downstream targets by large-scale proteomics analysis. J Proteomics 2017; 170:99-109. [PMID: 28882678 DOI: 10.1016/j.jprot.2017.09.002] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2017] [Revised: 08/14/2017] [Accepted: 09/03/2017] [Indexed: 02/07/2023]
Abstract
Melanoma is the most notorious and fatal of all skin cancers and the existing treatment options have not been proven to effectively manage this neoplasm, especially the metastatic disease. Sirtuin (SIRT) proteins have been shown to be differentially expressed in melanoma. We have shown that SIRTs 1 and 2 were overexpressed in melanoma and inhibition of SIRT1 imparts anti-proliferative responses in human melanoma cells. To elucidate the impact of SIRT 1 and/or 2 in melanoma, we created stable knockdowns of SIRTs 1, 2, and their combination using shRNA mediated RNA interference in A375 human melanoma cells. We found that SIRT1 and SIRT1&2 combination knockdown caused a decreased cellular proliferation in melanoma cells. Further, the knockdown of SIRT 1 and/or 2 resulted in a decreased colony formation in melanoma cells. To explore the downstream targets of SIRTs 1 and/or 2, we employed a label-free quantitative nano-LC-MS/MS proteomics analysis using the stable lines. We found aberrant levels of proteins involved in many vital cellular processes, including cytoskeletal organization, ribosomal activity, oxidative stress response, and angiogenesis. These findings provide clear evidence of cellular systems undergoing alterations in response to sirtuin inhibition, and have unveiled several excellent candidates for future study. SIGNIFICANCE Melanoma is the deadliest form of skin cancer, due to its aggressive nature, metastatic potential, and a lack of sufficient treatment options for advanced disease. Therefore, detailed investigations into the molecular mechanisms of melanoma growth and progression are needed. In the search for candidate genes to serve as therapeutic targets, the sirtuins show promise as they have been found to be upregulated in melanoma and they regulate a large number of proteins involved in cellular processes known to affect tumor growth, such as DNA damage repair, cell cycle arrest, and apoptosis. In this study, we used a large-scale label-free comparative proteomics system to identify novel protein targets that are affected following knockdown of SIRT1 and/or 2 in A375 metastatic melanoma cell line. Our study offers important insight into the potential downstream targets of SIRTs 1 and/or 2. This may unravel new potential areas of exploration in melanoma research.
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Affiliation(s)
- Melissa J Wilking-Busch
- Department of Dermatology, University of Wisconsin, 1300 University Avenue, Madison, WI 53706, USA
| | - Mary A Ndiaye
- Department of Dermatology, University of Wisconsin, 1300 University Avenue, Madison, WI 53706, USA
| | - Xiaoqi Liu
- Department of Biochemistry, Purdue University, 175 S. University Street, West Lafayette, IN, USA
| | - Nihal Ahmad
- Department of Dermatology, University of Wisconsin, 1300 University Avenue, Madison, WI 53706, USA; William S. Middleton VA Medical Center, 2500 Overlook Terrace, Madison, WI 53705, USA.
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Zaleska M, Fogl C, Kho AL, Ababou A, Ehler E, Pfuhl M. The Cardiac Stress Response Factor Ms1 Can Bind to DNA and Has a Function in the Nucleus. PLoS One 2015; 10:e0144614. [PMID: 26656831 PMCID: PMC4682817 DOI: 10.1371/journal.pone.0144614] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2015] [Accepted: 11/21/2015] [Indexed: 11/21/2022] Open
Abstract
Ms1 (also known as STARS and ABRA) has been shown to act as an early stress response gene in processes as different as hypertrophy in skeletal and cardiac muscle and growth of collateral blood vessels. It is important for cardiac development in zebrafish and is upregulated in mouse models for cardiac hypertrophy as well as in human failing hearts. Ms1 possesses actin binding sites at its C-terminus and is usually found in the cell bound to actin filaments in the cytosol or in sarcomeres. We determined the NMR structure of the only folded domain of Ms1 comprising the second actin binding site called actin binding domain 2 (ABD2, residues 294-375), and found that it is similar to the winged helix-turn-helix fold adopted mainly by DNA binding domains of transcriptional factors. In vitro experiments show specific binding of this domain, in combination with a newly discovered AT-hook motif located N-terminally, to the sequence (A/C/G)AAA(C/A). NMR and fluorescence titration experiments confirm that this motif is indeed bound specifically by the recognition helix. In neonatal rat cardiomyocytes endogenous Ms1 is found in the nucleus in a spotted pattern, reminiscent of PML bodies. In adult rat cardiomyocytes Ms1 is exclusively found in the sarcomere. A nuclear localisation site in the N-terminus of the protein is required for nuclear localisation. This suggests that Ms1 has the potential to act directly in the nucleus through specific interaction with DNA in development and potentially as a response to stress in adult tissues.
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Affiliation(s)
- Mariola Zaleska
- Cardiovascular and Randall Division, King's College London, London, United Kingdom
| | - Claudia Fogl
- Department of Biochemistry, University of Leicester, Lancaster Road, Leicester, United Kingdom
| | - Ay Lin Kho
- Cardiovascular and Randall Division, King's College London, London, United Kingdom
| | - Abdessamad Ababou
- Department of Pathology, University of Cambridge, Tennis Court Road, Cambridge, United Kingdom
| | - Elisabeth Ehler
- Cardiovascular and Randall Division, King's College London, London, United Kingdom
| | - Mark Pfuhl
- Cardiovascular and Randall Division, King's College London, London, United Kingdom
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Lin WC, Wang LC, Pang TL, Chen MY. Actin-binding protein G (AbpG) participates in modulating the actin cytoskeleton and cell migration in Dictyostelium discoideum. Mol Biol Cell 2015; 26:1084-97. [PMID: 25609090 PMCID: PMC4357508 DOI: 10.1091/mbc.e14-05-0972] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Dictyostelium cells lacking actin-binding protein G (AbpG) migrate at a reduced speed and display elevated F-actin levels. AbpG is enriched in the cortical/lamellipodial regions and colocalizes with F-actin. A novel protein domain in AbpG mediates the interaction with F-actin and is required for the cellular function of AbpG. Cell migration is involved in various physiological and pathogenic events, and the complex underlying molecular mechanisms have not been fully elucidated. The simple eukaryote Dictyostelium discoideum displays chemotactic locomotion in stages of its life cycle. By characterizing a Dictyostelium mutant defective in chemotactic responses, we identified a novel actin-binding protein serving to modulate cell migration and named it actin-binding protein G (AbpG); this 971–amino acid (aa) protein contains an N-terminal type 2 calponin homology (CH2) domain followed by two large coiled-coil regions. In chemoattractant gradients, abpG− cells display normal directional persistence but migrate significantly more slowly than wild-type cells; expressing Flag-AbpG in mutant cells eliminates the motility defect. AbpG is enriched in cortical/lamellipodial regions and colocalizes well with F-actin; aa 401–600 and aa 501–550 fragments of AbpG show the same distribution as full-length AbpG. The aa 501–550 region of AbpG, which is essential for AbpG to localize to lamellipodia and to rescue the phenotype of abpG− cells, is sufficient for binding to F-actin and represents a novel actin-binding protein domain. Compared with wild-type cells, abpG− cells have significantly higher F-actin levels. Collectively our results suggest that AbpG may participate in modulating actin dynamics to optimize cell locomotion.
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Affiliation(s)
- Wei-Chi Lin
- Institute of Biochemistry and Molecular Biology, National Yang-Ming University, Taipei 11221, Taiwan
| | - Liang-Chen Wang
- Institute of Biochemistry and Molecular Biology, National Yang-Ming University, Taipei 11221, Taiwan
| | - Te-Ling Pang
- Institute of Biochemistry and Molecular Biology, National Yang-Ming University, Taipei 11221, Taiwan
| | - Mei-Yu Chen
- Institute of Biochemistry and Molecular Biology, National Yang-Ming University, Taipei 11221, Taiwan Genome Research Center, National Yang-Ming University, Taipei 11221, Taiwan
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Ambrose KV, Belanger FC. SOLiD-SAGE of endophyte-infected red fescue reveals numerous effects on host transcriptome and an abundance of highly expressed fungal secreted proteins. PLoS One 2012; 7:e53214. [PMID: 23285269 PMCID: PMC3532157 DOI: 10.1371/journal.pone.0053214] [Citation(s) in RCA: 66] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2012] [Accepted: 11/27/2012] [Indexed: 11/19/2022] Open
Abstract
One of the most important plant-fungal symbiotic relationships is that of cool season grasses with endophytic fungi of the genera Epichloë and Neotyphodium. These associations often confer benefits, such as resistance to herbivores and improved drought tolerance, to the hosts. One benefit that appears to be unique to fine fescue grasses is disease resistance. As a first step towards understanding the basis of the endophyte-mediated disease resistance in Festuca rubra we carried out a SOLiD-SAGE quantitative transcriptome comparison of endophyte-free and Epichloë festucae-infected F. rubra. Over 200 plant genes involved in a wide variety of physiological processes were statistically significantly differentially expressed between the two samples. Many of the endophyte expressed genes were surprisingly abundant, with the most abundant fungal tag representing over 10% of the fungal mapped tags. Many of the abundant fungal tags were for secreted proteins. The second most abundantly expressed fungal gene was for a secreted antifungal protein and is of particular interest regarding the endophyte-mediated disease resistance. Similar genes in Penicillium and Aspergillus spp. have been demonstrated to have antifungal activity. Of the 10 epichloae whole genome sequences available, only one isolate of E. festucae and Neotyphodium gansuense var inebrians have an antifungal protein gene. The uniqueness of this gene in E. festucae from F. rubra, its transcript abundance, and the secreted nature of the protein, all suggest it may be involved in the disease resistance conferred to the host, which is a unique feature of the fine fescue-endophyte symbiosis.
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Affiliation(s)
- Karen V. Ambrose
- Department of Plant Biology and Pathology, Rutgers University, New Brunswick, New Jersey, United States of America
| | - Faith C. Belanger
- Department of Plant Biology and Pathology, Rutgers University, New Brunswick, New Jersey, United States of America
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Fogl C, Puckey L, Hinssen U, Zaleska M, El-Mezgueldi M, Croasdale R, Bowman A, Matsukawa A, Samani NJ, Savva R, Pfuhl M. A structural and functional dissection of the cardiac stress response factor MS1. Proteins 2011; 80:398-409. [PMID: 22081479 DOI: 10.1002/prot.23201] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2011] [Revised: 09/02/2011] [Accepted: 09/07/2011] [Indexed: 11/11/2022]
Abstract
MS1 is a protein predominantly expressed in cardiac and skeletal muscle that is upregulated in response to stress and contributes to development of hypertrophy. In the aortic banding model of left ventricular hypertrophy, its cardiac expression was significantly upregulated within 1 h. Its function is postulated to depend on its F-actin binding ability, located to the C-terminal half of the protein, which promotes stabilization of F-actin in the cell thus releasing myocardin-related transcription factors to the nucleus where they stimulate transcription in cooperation with serum response factor. Initial attempts to purify the protein only resulted in heavily degraded samples that showed distinct bands on SDS gels, suggesting the presence of stable domains. Using a combination of combinatorial domain hunting and sequence analysis, a set of potential domains was identified. The C-terminal half of the protein actually contains two independent F-actin binding domains. The most C-terminal fragment (294-375), named actin binding domain 2 (ABD2), is independently folded while a proximal fragment called ABD1 (193-296) binds to F-actin with higher affinity than ABD2 (KD 2.21 ± 0.47 μM vs. 10.61 ± 0.7 μM), but is not structured by itself in solution. NMR interaction experiments show that it binds and folds in a cooperative manner to F-actin, justifying the label of domain. The architecture of the MS1 C-terminus suggests that ABD1 alone could completely fulfill the F-actin binding function opening up the intriguing possibility that ABD2, despite its high level of conservation, could have developed other functions.
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Affiliation(s)
- Claudia Fogl
- Department of Biochemistry, University of Leicester, Leicester LE1 9HN, United Kingdom
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