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van Zwam MC, Dhar A, Bosman W, van Straaten W, Weijers S, Seta E, Joosten B, van Haren J, Palani S, van den Dries K. IntAct: A nondisruptive internal tagging strategy to study the organization and function of actin isoforms. PLoS Biol 2024; 22:e3002551. [PMID: 38466773 PMCID: PMC10957077 DOI: 10.1371/journal.pbio.3002551] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2023] [Revised: 03/21/2024] [Accepted: 02/16/2024] [Indexed: 03/13/2024] Open
Abstract
Mammals have 6 highly conserved actin isoforms with nonredundant biological functions. The molecular basis of isoform specificity, however, remains elusive due to a lack of tools. Here, we describe the development of IntAct, an internal tagging strategy to study actin isoforms in fixed and living cells. We identified a residue pair in β-actin that permits tag integration and used knock-in cell lines to demonstrate that IntAct β-actin expression and filament incorporation is indistinguishable from wild type. Furthermore, IntAct β-actin remains associated with common actin-binding proteins (ABPs) and can be targeted in living cells. We demonstrate the usability of IntAct for actin isoform investigations by showing that actin isoform-specific distribution is maintained in human cells. Lastly, we observed a variant-dependent incorporation of tagged actin variants into yeast actin patches, cables, and cytokinetic rings demonstrating cross species applicability. Together, our data indicate that IntAct is a versatile tool to study actin isoform localization, dynamics, and molecular interactions.
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Affiliation(s)
- Maxime C. van Zwam
- Department of Medical BioSciences, Radboud University Medical Center, Nijmegen, the Netherlands
| | - Anubhav Dhar
- Department of Biochemistry, Division of Biological Sciences, Indian Institute of Science, Bangalore, India
| | - Willem Bosman
- Department of Medical BioSciences, Radboud University Medical Center, Nijmegen, the Netherlands
| | - Wendy van Straaten
- Department of Medical BioSciences, Radboud University Medical Center, Nijmegen, the Netherlands
| | - Suzanne Weijers
- Department of Medical BioSciences, Radboud University Medical Center, Nijmegen, the Netherlands
| | - Emiel Seta
- Department of Medical BioSciences, Radboud University Medical Center, Nijmegen, the Netherlands
| | - Ben Joosten
- Department of Medical BioSciences, Radboud University Medical Center, Nijmegen, the Netherlands
| | | | - Saravanan Palani
- Department of Biochemistry, Division of Biological Sciences, Indian Institute of Science, Bangalore, India
| | - Koen van den Dries
- Department of Medical BioSciences, Radboud University Medical Center, Nijmegen, the Netherlands
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Abdelrahman SA, Abdelfatah MM, Keshta AT. Rapamycin-filgrastim combination therapy ameliorates portal hypertension-induced splenomegaly: Role of β actin and S100A9 proteins modulation. IRANIAN JOURNAL OF BASIC MEDICAL SCIENCES 2022; 25:732-744. [PMID: 35949314 PMCID: PMC9320204 DOI: 10.22038/ijbms.2022.64034.14101] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/25/2022] [Accepted: 06/07/2022] [Indexed: 11/06/2022]
Abstract
Objectives Thioacetamide (TAA) was administered to induce an animal model of liver disease with secondary splenomegaly to assess the mechanisms underlying the effects of rapamycin and filgrastim when taken separately or in combination on the biochemical and histopathological aspects of the liver and spleen. Materials and Methods Thirty adult male albino rats were divided into five groups (control, TAA-treated group, TAA+rapamycin, TAA+filgrastim, and TAA+rapamycin+filgrastim group). We measured relative liver and spleen weights, serum levels of alanine transaminase (ALT), aspartate transaminase (AST), and albumin. Molecular docking modeling and histopathological examination of liver and spleen sections with hematoxylin and eosin and Masson trichrome staining with immunohistochemical detection of splenic CD3 and CD20 lymphocytes, S100A9 and β actin antibodies were detected. Morphometric and statistical analyses of the results were performed. Results TAA administration altered the histological structure of the liver and spleen and impaired liver function. It increased the expression of splenic CD3, CD20 lymphocytes, and S100A9 while diminishing the expression of β actin. Each of rapamycin and filgrastim, when administered separately, improved liver and spleen indices and liver function, but rapamycin did not affect the albumin level. They lowered splenic B and T lymphocyte levels. Expression levels of S100A9 showed down-regulation while β actin levels were up-regulated when compared with TAA. Combination therapy improved liver and spleen tissue pathology and significantly ameliorated the expression of splenic lymphocytes through regulation of S100A9 and β actin expression. Conclusion The synergistic effect of combination therapy was dependent on the regulation of splenic S100A9 and β actin levels.
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Affiliation(s)
- Shaimaa A. Abdelrahman
- Medical Histology and Cell Biology Department, Faculty of Medicine, Zagazig University, Zagazig, Egypt,Corresponding author: Shaimaa A. Abdelrahman. Department of Medical Histology and Cell Biology, Faculty of Medicine, Zagazig University, Zagazig, Egypt.
| | - Mohammed M. Abdelfatah
- Biochemistry Division, Chemistry Department, Faculty of Science, Zagazig University, Zagazig, Egypt
| | - Akaber T. Keshta
- Biochemistry Division, Chemistry Department, Faculty of Science, Zagazig University, Zagazig, Egypt
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Reader JC, Fan C, Ory ECH, Ju J, Lee R, Vitolo MI, Smith P, Wu S, Ching MMN, Asiedu EB, Jewell CM, Rao GG, Fulton A, Webb TJ, Yang P, Santin AD, Huang HC, Martin SS, Roque DM. Microtentacle Formation in Ovarian Carcinoma. Cancers (Basel) 2022; 14:800. [PMID: 35159067 PMCID: PMC8834106 DOI: 10.3390/cancers14030800] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2021] [Revised: 01/16/2022] [Accepted: 01/19/2022] [Indexed: 11/16/2022] Open
Abstract
BACKGROUND The development of chemoresistance to paclitaxel and carboplatin represents a major therapeutic challenge in ovarian cancer, a disease frequently characterized by malignant ascites and extrapelvic metastasis. Microtentacles (McTNs) are tubulin-based projections observed in detached breast cancer cells. In this study, we investigated whether ovarian cancers exhibit McTNs and characterized McTN biology. METHODS We used an established lipid-tethering mechanism to suspend and image individual cancer cells. We queried a panel of immortalized serous (OSC) and clear cell (OCCC) cell lines as well as freshly procured ascites and human ovarian surface epithelium (HOSE). We assessed by Western blot β-tubulin isotype, α-tubulin post-translational modifications and actin regulatory proteins in attached/detached states. We studied clustering in suspended conditions. Effects of treatment with microtubule depolymerizing and stabilizing drugs were described. RESULTS Among cell lines, up to 30% of cells expressed McTNs. Four McTN morphologies (absent, symmetric-short, symmetric-long, tufted) were observed in immortalized cultures as well as ascites. McTN number/length varied with histology according to metastatic potential. Most OCCC overexpressed class III ß-tubulin. OCCC/OSC cell lines exhibited a trend towards more microtubule-stabilizing post-translational modifications of α-tubulin relative to HOSE. Microtubule depolymerizing drugs decreased the number/length of McTNs, confirming that McTNs are composed of tubulin. Cells that failed to form McTNs demonstrated differential expression of α-tubulin- and actin-regulating proteins relative to cells that form McTNs. Cluster formation is more susceptible to microtubule targeting agents in cells that form McTNs, suggesting a role for McTNs in aggregation. CONCLUSIONS McTNs likely participate in key aspects of ovarian cancer metastasis. McTNs represent a new therapeutic target for this disease that could refine therapies, including intraperitoneal drug delivery.
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Affiliation(s)
- Jocelyn C. Reader
- Division of Gynecologic Oncology, Greenebaum Comprehensive Cancer Center, University of Maryland School of Medicine, Baltimore, MD 21201, USA; (J.C.R.); (C.F.); (P.S.); (M.M.N.C.); (G.G.R.)
- Department of Pharmaceutical Sciences, School of Pharmacy and Health Sciences, University of Maryland Eastern Shore, Princess Anne, MD 21853, USA
| | - Cong Fan
- Division of Gynecologic Oncology, Greenebaum Comprehensive Cancer Center, University of Maryland School of Medicine, Baltimore, MD 21201, USA; (J.C.R.); (C.F.); (P.S.); (M.M.N.C.); (G.G.R.)
| | - Eleanor Claire-Higgins Ory
- Department of Physiology, Greenebaum Comprehensive Cancer Center, University of Maryland School of Medicine, Baltimore, MD 21201, USA; (E.C.-H.O.); (J.J.); (R.L.)
| | - Julia Ju
- Department of Physiology, Greenebaum Comprehensive Cancer Center, University of Maryland School of Medicine, Baltimore, MD 21201, USA; (E.C.-H.O.); (J.J.); (R.L.)
| | - Rachel Lee
- Department of Physiology, Greenebaum Comprehensive Cancer Center, University of Maryland School of Medicine, Baltimore, MD 21201, USA; (E.C.-H.O.); (J.J.); (R.L.)
| | - Michele I. Vitolo
- Department of Pharmacology, Greenebaum Comprehensive Cancer Center, University of Maryland School of Medicine, Baltimore, MD 21201, USA; (M.I.V.); (S.S.M.)
| | - Paige Smith
- Division of Gynecologic Oncology, Greenebaum Comprehensive Cancer Center, University of Maryland School of Medicine, Baltimore, MD 21201, USA; (J.C.R.); (C.F.); (P.S.); (M.M.N.C.); (G.G.R.)
| | - Sulan Wu
- Department of Chemistry and Biochemistry, Oberlin College, Oberlin, OH 44074, USA;
- Division of Biology and Biological Engineering, California Institute of Technology, Pasadena, CA 91125, USA
| | - Mc Millan Nicol Ching
- Division of Gynecologic Oncology, Greenebaum Comprehensive Cancer Center, University of Maryland School of Medicine, Baltimore, MD 21201, USA; (J.C.R.); (C.F.); (P.S.); (M.M.N.C.); (G.G.R.)
- Cellular and Molecular Medicine, Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA
- Division of Cancer Imaging, Russel H. Morgan Department of Radiology and Radiological Sciences, Johns Hopkins Hospital, Baltimore, MD 21287, USA
| | - Emmanuel B. Asiedu
- Department of Microbiology and Immunology, Greenebaum Comprehensive Cancer Center, University of Maryland School of Medicine, Baltimore, MD 21201, USA; (E.B.A.); (T.J.W.)
| | - Christopher M. Jewell
- Fischell Department of Bioengineering, University of Maryland College Park, College Park, MD 20742, USA; (C.M.J.); (H.-C.H.)
- Baltimore Veterans Administration Medical Center, Baltimore, MD 21201, USA;
| | - Gautam G. Rao
- Division of Gynecologic Oncology, Greenebaum Comprehensive Cancer Center, University of Maryland School of Medicine, Baltimore, MD 21201, USA; (J.C.R.); (C.F.); (P.S.); (M.M.N.C.); (G.G.R.)
| | - Amy Fulton
- Baltimore Veterans Administration Medical Center, Baltimore, MD 21201, USA;
- Department of Pathology, Greenebaum Comprehensive Cancer Center, University of Maryland School of Medicine, Baltimore, MD 21201, USA
| | - Tonya J. Webb
- Department of Microbiology and Immunology, Greenebaum Comprehensive Cancer Center, University of Maryland School of Medicine, Baltimore, MD 21201, USA; (E.B.A.); (T.J.W.)
| | - Peixin Yang
- Department of Obstetrics, Gynecology & Reproductive Sciences and Biochemistry & Molecular Biology, University of Maryland School of Medicine, Baltimore, MD 21201, USA;
| | - Alessandro D. Santin
- Division of Gynecologic Oncology, Smilow Cancer Center, Yale University, New Haven, CT 06520, USA;
| | - Huang-Chiao Huang
- Fischell Department of Bioengineering, University of Maryland College Park, College Park, MD 20742, USA; (C.M.J.); (H.-C.H.)
| | - Stuart S. Martin
- Department of Pharmacology, Greenebaum Comprehensive Cancer Center, University of Maryland School of Medicine, Baltimore, MD 21201, USA; (M.I.V.); (S.S.M.)
- Department of Pathology, Greenebaum Comprehensive Cancer Center, University of Maryland School of Medicine, Baltimore, MD 21201, USA
| | - Dana M. Roque
- Division of Gynecologic Oncology, Greenebaum Comprehensive Cancer Center, University of Maryland School of Medicine, Baltimore, MD 21201, USA; (J.C.R.); (C.F.); (P.S.); (M.M.N.C.); (G.G.R.)
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Zou DD, Xu D, Deng YY, Wu WJ, Zhang J, Huang L, He L. Identification of key genes in cutaneous squamous cell carcinoma: a transcriptome sequencing and bioinformatics profiling study. ANNALS OF TRANSLATIONAL MEDICINE 2021; 9:1497. [PMID: 34805359 PMCID: PMC8573448 DOI: 10.21037/atm-21-3915] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/09/2021] [Accepted: 08/30/2021] [Indexed: 12/19/2022]
Abstract
Background Long-term exposure to ultraviolet (UV) radiation can cause cutaneous squamous cell carcinoma (cSCC), which is one of the most common malignant cancers worldwide. Actinic keratosis (AK) is generally considered a precancerous lesion of cSCC. However, the pathogenesis and oncogenic processes of AK and cSCC remain elusive, especially in the context of photodamage. Methods In this study, transcriptome sequencing was performed on AK, cSCC, normal sun-exposed skin (NES) tissues, and normal non-sun-exposed skin (NNS) from 24 individuals. Bioinformatics analysis to identify the differentially expressed genes (DEGs) of 4 groups, and potential key genes of cSCC were validated by real-time quantitative reverse transcription PCR (qRT-PCR). Results A total of 46,930 genes were differentially expressed in the 4 groups, including 127 genes that were differentially expressed between NES and NNS, 420 DEGs in AK compared to NES, 1,658 DEGs in cSCC compared to NES, and 1,389 DEGs in cSCC compared to AK. The Kyoto Encyclopedia of Genes and Genomes (KEGG) pathway enrichment analysis suggested that the DEGs are involved in multiple pathways, including extracellular matrix (ECM)-receptor interaction, immune, inflammatory, microbial infection, and other related pathways. Finally, 5 new genes (HEPHL1, FBN2, SULF1, SULF2, and TCN1) were confirmed significantly upregulated in cSCC. Conclusions Using transcriptome sequencing and integrated bioinformatical analysis, we have identified key DEGs and pathways in cSCC, which could improve our understanding of the cause and underlying molecular events of AK and cSCC. HEPHL1, FBN2, SULF1, SULF2, and TCN1 may be novel potential biomarkers and therapeutic targets of cSCC.
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Affiliation(s)
- Dan-Dan Zou
- Department of Dermatology, First Affiliated Hospital of Kunming Medical University, Kunming, China
| | - Dan Xu
- Department of Dermatology, First Affiliated Hospital of Kunming Medical University, Kunming, China
| | - Yuan-Yuan Deng
- Department of Dermatology, First Affiliated Hospital of Kunming Medical University, Kunming, China
| | - Wen-Juan Wu
- Department of Dermatology, First Affiliated Hospital of Kunming Medical University, Kunming, China
| | - Juan Zhang
- Department of Dermatology, First Affiliated Hospital of Kunming Medical University, Kunming, China
| | - Ling Huang
- Department of Dermatology, First Affiliated Hospital of Dali University, Dali, China
| | - Li He
- Department of Dermatology, First Affiliated Hospital of Kunming Medical University, Kunming, China
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Gonda A, Zhao N, Shah JV, Siebert JN, Gunda S, Inan B, Kwon M, Libutti SK, Moghe PV, Francis NL, Ganapathy V. Extracellular Vesicle Molecular Signatures Characterize Metastatic Dynamicity in Ovarian Cancer. Front Oncol 2021; 11:718408. [PMID: 34868914 PMCID: PMC8637407 DOI: 10.3389/fonc.2021.718408] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2021] [Accepted: 10/29/2021] [Indexed: 01/05/2023] Open
Abstract
BACKGROUND Late-stage diagnosis of ovarian cancer, a disease that originates in the ovaries and spreads to the peritoneal cavity, lowers 5-year survival rate from 90% to 30%. Early screening tools that can: i) detect with high specificity and sensitivity before conventional tools such as transvaginal ultrasound and CA-125, ii) use non-invasive sampling methods and iii) longitudinally significantly increase survival rates in ovarian cancer are needed. Studies that employ blood-based screening tools using circulating tumor-cells, -DNA, and most recently tumor-derived small extracellular vesicles (sEVs) have shown promise in non-invasive detection of cancer before standard of care. Our findings in this study show the promise of a sEV-derived signature as a non-invasive longitudinal screening tool in ovarian cancer. METHODS Human serum samples as well as plasma and ascites from a mouse model of ovarian cancer were collected at various disease stages. Small extracellular vesicles (sEVs) were extracted using a commercially available kit. RNA was isolated from lysed sEVs, and quantitative RT-PCR was performed to identify specific metastatic gene expression. CONCLUSION This paper highlights the potential of sEVs in monitoring ovarian cancer progression and metastatic development. We identified a 7-gene panel in sEVs derived from plasma, serum, and ascites that overlapped with an established metastatic ovarian carcinoma signature. We found the 7-gene panel to be differentially expressed with tumor development and metastatic spread in a mouse model of ovarian cancer. The most notable finding was a significant change in the ascites-derived sEV gene signature that overlapped with that of the plasma-derived sEV signature at varying stages of disease progression. While there were quantifiable changes in genes from the 7-gene panel in serum-derived sEVs from ovarian cancer patients, we were unable to establish a definitive signature due to low sample number. Taken together our findings show that differential expression of metastatic genes derived from circulating sEVs present a minimally invasive screening tool for ovarian cancer detection and longitudinal monitoring of molecular changes associated with progression and metastatic spread.
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Affiliation(s)
- Amber Gonda
- Department of Biomedical Engineering, Rutgers University, Piscataway, NJ, United States
| | - Nanxia Zhao
- Department of Chemical and Biochemical Engineering, Rutgers University, Piscataway, NJ, United States
| | - Jay V. Shah
- Department of Biomedical Engineering, Rutgers University, Piscataway, NJ, United States
| | - Jake N. Siebert
- Department of Biomedical Engineering, Rutgers University, Piscataway, NJ, United States
- Rutgers-Robert Wood Johnson Medical School, Rutgers University, New Brunswick, NJ, United States
| | - Srujanesh Gunda
- School of Environmental and Biological Sciences, Rutgers University, New Brunswick, NJ, United States
| | - Berk Inan
- School of Environmental and Biological Sciences, Rutgers University, New Brunswick, NJ, United States
| | - Mijung Kwon
- Rutgers Cancer Institute of New Jersey, Rutgers University, New Brunswick, NJ, United States
| | - Steven K. Libutti
- Rutgers Cancer Institute of New Jersey, Rutgers University, New Brunswick, NJ, United States
| | - Prabhas V. Moghe
- Department of Biomedical Engineering, Rutgers University, Piscataway, NJ, United States
- Department of Chemical and Biochemical Engineering, Rutgers University, Piscataway, NJ, United States
| | - Nicola L. Francis
- Department of Biomedical Engineering, Rutgers University, Piscataway, NJ, United States
| | - Vidya Ganapathy
- Department of Biomedical Engineering, Rutgers University, Piscataway, NJ, United States
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Liu D, Zhang P, Zhao J, Yang L, Wang W. Identification of Molecular Characteristics and New Prognostic Targets for Thymoma by Multiomics Analysis. BIOMED RESEARCH INTERNATIONAL 2021; 2021:5587441. [PMID: 34104648 PMCID: PMC8159640 DOI: 10.1155/2021/5587441] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/16/2021] [Revised: 03/16/2021] [Accepted: 04/01/2021] [Indexed: 11/17/2022]
Abstract
BACKGROUND Thymoma is a heterogeneous tumor originated from thymic epithelial cells. The molecular mechanism of thymoma remains unclear. METHODS The expression profile, methylation, and mutation data of thymoma were obtained from TCGA database. The coexpression network was constructed using the variance of gene expression through WGCNA. Enrichment analysis using clusterProfiler R package and overall survival (OS) analysis by Kaplan-Meier method were carried out for the intersection of differential expression genes (DEGs) screened by limma R package and important module genes. PPI network was constructed based on STRING database for genes with significant impact on survival. The impact of key genes on the prognosis of thymoma was evaluated by ROC curve and Cox regression model. Finally, the immune cell infiltration, methylation modification, and gene mutation were calculated. RESULTS We obtained eleven coexpression modules, and three of them were higher positively correlated with thymoma. DEGs in these three modules mainly involved in MAPK cascade and PPAR pathway. LIPE, MYH6, ACTG2, KLF4, SULT4A1, and TF were identified as key genes through the PPI network. AUC values of LIPE were the highest. Cox regression analysis showed that low expression of LIPE was a prognostic risk factor for thymoma. In addition, there was a high correlation between LIPE and T cells. Importantly, the expression of LIPE was modified by methylation. Among all the mutated genes, GTF2I had the highest mutation frequency. CONCLUSION These results suggested that the molecular mechanism of thymoma may be related to immune inflammation. LIPE may be the key genes affecting prognosis of thymoma. Our findings will help to elucidate the pathogenesis and therapeutic targets of thymoma.
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Affiliation(s)
- Dazhong Liu
- Department of Thoracic Surgery, Second Affiliated Hospital of Harbin Medical University, Harbin 150086, China
| | - Pengfei Zhang
- Department of Thoracic Surgery, Second Affiliated Hospital of Harbin Medical University, Harbin 150086, China
| | - Jiaying Zhao
- Department of Thoracic Surgery, Second Affiliated Hospital of Harbin Medical University, Harbin 150086, China
| | - Lei Yang
- Department of Thoracic Surgery, Second Affiliated Hospital of Harbin Medical University, Harbin 150086, China
| | - Wei Wang
- Department of Thoracic Surgery, Second Affiliated Hospital of Harbin Medical University, Harbin 150086, China
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Malek N, Michrowska A, Mazurkiewicz E, Mrówczyńska E, Mackiewicz P, Mazur AJ. The origin of the expressed retrotransposed gene ACTBL2 and its influence on human melanoma cells' motility and focal adhesion formation. Sci Rep 2021; 11:3329. [PMID: 33558623 PMCID: PMC7870945 DOI: 10.1038/s41598-021-82074-x] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2020] [Accepted: 01/08/2021] [Indexed: 01/30/2023] Open
Abstract
We have recently found that β-actin-like protein 2 (actbl2) forms complexes with gelsolin in human melanoma cells and can polymerize. Phylogenetic and bioinformatic analyses showed that actbl2 has a common origin with two non-muscle actins, which share a separate history from the muscle actins. The actin groups' divergence started at the beginning of vertebrate evolution, and actbl2 actins are characterized by the largest number of non-conserved amino acid substitutions of all actins. We also discovered that ACTBL2 is expressed at a very low level in several melanoma cell lines, but a small subset of cells exhibited a high ACTBL2 expression. We found that clones with knocked-out ACTBL2 (CR-ACTBL2) or overexpressing actbl2 (OE-ACTBL2) differ from control cells in the invasion, focal adhesion formation, and actin polymerization ratio, as well as in the formation of lamellipodia and stress fibers. Thus, we postulate that actbl2 is the seventh actin isoform and is essential for cell motility.
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Affiliation(s)
- Natalia Malek
- Department of Cell Pathology, Faculty of Biotechnology, University of Wroclaw, ul. Joliot-Curie 14a, 50-383, Wroclaw, Poland
| | - Aleksandra Michrowska
- Department of Cell Pathology, Faculty of Biotechnology, University of Wroclaw, ul. Joliot-Curie 14a, 50-383, Wroclaw, Poland
| | - Ewa Mazurkiewicz
- Department of Cell Pathology, Faculty of Biotechnology, University of Wroclaw, ul. Joliot-Curie 14a, 50-383, Wroclaw, Poland
| | - Ewa Mrówczyńska
- Department of Cell Pathology, Faculty of Biotechnology, University of Wroclaw, ul. Joliot-Curie 14a, 50-383, Wroclaw, Poland
| | - Paweł Mackiewicz
- Department of Bioinformatics and Genomics, Faculty of Biotechnology, University of Wroclaw, ul. Joliot-Curie 14a, Wroclaw, 50-383, Poland
| | - Antonina J Mazur
- Department of Cell Pathology, Faculty of Biotechnology, University of Wroclaw, ul. Joliot-Curie 14a, 50-383, Wroclaw, Poland.
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Chen S, Wang X, Yuan J, Deng C, Xie X, Kang J. Reduced levels of actin gamma 1 predict poor prognosis in ovarian cancer patients. J Obstet Gynaecol Res 2020; 46:1827-1834. [DOI: 10.1111/jog.14353] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2019] [Revised: 04/04/2020] [Accepted: 04/22/2020] [Indexed: 12/16/2022]
Affiliation(s)
- Shiyan Chen
- Department of Obstetrics and Gynecology, Guangzhou First People's HospitalGuangzhou Medical University Guangzhou China
| | - Xiaoxia Wang
- Department of Obstetrics and Gynecology, Guangzhou First People's HospitalGuangzhou Medical University Guangzhou China
| | - Jin Yuan
- Department of Obstetrics and Gynecology, Guangzhou First People's HospitalGuangzhou Medical University Guangzhou China
| | - Cui Deng
- Department of Obstetrics and Gynecology, Guangzhou First People's HospitalGuangzhou Medical University Guangzhou China
| | - Xueman Xie
- Department of Obstetrics and Gynecology, Guangzhou First People's HospitalGuangzhou Medical University Guangzhou China
| | - Jiali Kang
- Department of Obstetrics and Gynecology, Guangzhou First People's HospitalGuangzhou Medical University Guangzhou China
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The Expressions and Mechanisms of Sarcomeric Proteins in Cancers. DISEASE MARKERS 2020; 2020:8885286. [PMID: 32670437 PMCID: PMC7346232 DOI: 10.1155/2020/8885286] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/01/2020] [Revised: 06/07/2020] [Accepted: 06/13/2020] [Indexed: 02/07/2023]
Abstract
The sarcomeric proteins control the movement of cells in diverse species, whereas the deregulation can induce tumours in model organisms and occurs in human carcinomas. Sarcomeric proteins are recognized as oncogene and related to tumor cell metastasis. Recent insights into their expressions and functions have led to new cancer therapeutic opportunities. In this review, we appraise the evidence for the sarcomeric proteins as cancer genes and discuss cancer-relevant biological functions, potential mechanisms by which sarcomeric proteins activity is altered in cancer.
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Malek N, Mrówczyńska E, Michrowska A, Mazurkiewicz E, Pavlyk I, Mazur AJ. Knockout of ACTB and ACTG1 with CRISPR/Cas9(D10A) Technique Shows that Non-Muscle β and γ Actin Are Not Equal in Relation to Human Melanoma Cells' Motility and Focal Adhesion Formation. Int J Mol Sci 2020; 21:ijms21082746. [PMID: 32326615 PMCID: PMC7216121 DOI: 10.3390/ijms21082746] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2020] [Revised: 04/10/2020] [Accepted: 04/10/2020] [Indexed: 12/12/2022] Open
Abstract
Non-muscle actins have been studied for many decades; however, the reason for the existence of both isoforms is still unclear. Here we show, for the first time, a successful inactivation of the ACTB (CRISPR clones with inactivated ACTB, CR-ACTB) and ACTG1 (CRISPR clones with inactivated ACTG1, CR-ACTG1) genes in human melanoma cells (A375) via the RNA-guided D10A mutated Cas9 nuclease gene editing [CRISPR/Cas9(D10A)] technique. This approach allowed us to evaluate how melanoma cell motility was impacted by the lack of either β actin coded by ACTB or γ actin coded by ACTG1. First, we observed different distributions of β and γ actin in the cells, and the absence of one actin isoform was compensated for via increased expression of the other isoform. Moreover, we noted that γ actin knockout had more severe consequences on cell migration and invasion than β actin knockout. Next, we observed that the formation rate of bundled stress fibers in CR-ACTG1 cells was increased, but lamellipodial activity in these cells was impaired, compared to controls. Finally, we discovered that the formation rate of focal adhesions (FAs) and, subsequently, FA-dependent signaling were altered in both the CR-ACTB and CR-ACTG1 clones; however, a more detrimental effect was observed for γ actin-deficient cells. Our research shows that both non-muscle actins play distinctive roles in melanoma cells’ FA formation and motility.
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Giachetto PF, Cunha RC, Nhani A, Garcia MV, Ferro JA, Andreotti R. Gene Expression in the Salivary Gland of Rhipicephalus (Boophilus) microplus Fed on Tick-Susceptible and Tick-Resistant Hosts. Front Cell Infect Microbiol 2020; 9:477. [PMID: 32039052 PMCID: PMC6985549 DOI: 10.3389/fcimb.2019.00477] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2019] [Accepted: 12/24/2019] [Indexed: 01/10/2023] Open
Abstract
The success of cattle tick fixation largely depends on the secretion of substances that alter the immune response of the host. The majority of these substances are expressed by the parasite salivary gland and secreted in tick saliva. It is known that hosts can mount immune responses against ticks and bovine European breeds, and bovine industrial crossbreeds are more susceptible to infestations than are Bos indicus cattle. To identify candidates for the development of novel control strategies for the cattle tick Rhipicephalus (Boophilus) microplus, a salivary gland transcriptome analysis of engorged females fed on susceptible or resistant hosts was performed. Using RNA-Seq, transcriptomes were de novo assembled and produced a total of 235,451 contigs with 93.3% transcriptome completeness. Differential expression analysis identified 137 sequences as differentially expressed genes (DEGs) between ticks raised on tick-susceptible or tick-resistant cattle. DEGs predicted to be secreted proteins include innexins, which are transmembrane proteins that form gap junction channels; the transporters Na+/dicarboxylate, Na+/tricarboxylate, and phosphate transporter and a putative monocarboxylate transporter; a phosphoinositol 4-phosphate adaptor protein; a cysteine-rich protein containing a trypsin inhibitor-like (TIL) domain; a putative defense protein 3 containing a reeler domain; and an F-actin-uncapping protein LRRC16A with a CARMIL_C domain; these genes were upregulated in ticks fed on tick-susceptible cattle. DEGs predicted to be non-secreted proteins included a small heat shock protein and the negative elongation factor B-like, both acting in a coordinated manner to increase HSP transcript levels in the salivary glands of the ticks fed on tick-susceptible cattle; the 26S protease regulatory subunit 6B and another chaperone with similarity to calnexin, also upregulated in ticks fed on tick-susceptible cattle; an EF-hand calcium binding protein and a serine carboxypeptidase (SCP), both involved in the blood coagulation cascade and upregulated in ticks fed on tick-susceptible cattle; and two ribosomal proteins, the 60S acidic ribosomal protein P2 and the 60S ribosomal protein L19. These results help to characterize cattle tick salivary gland gene expression in tick-susceptible and tick-resistant hosts and suggest new putative targets for the control of tick infestations, as those genes involved in the mechanism of stress response during blood feeding.
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Affiliation(s)
| | - Rodrigo Casquero Cunha
- Bolsista do CNPq (157460/2018-5), Programa de Pós-Graduação em Biotecnologia, Universidade Federal de Pelotas, Pelotas, Brazil
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