1
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Ricci MMC, Orenberg A, Ohayon L, Gau D, Wills RC, Bae Y, Das T, Koes D, Hammond GRV, Roy P. Actin-binding protein profilin1 is an important determinant of cellular phosphoinositide control. J Biol Chem 2024; 300:105583. [PMID: 38141770 PMCID: PMC10826164 DOI: 10.1016/j.jbc.2023.105583] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2023] [Revised: 12/09/2023] [Accepted: 12/13/2023] [Indexed: 12/25/2023] Open
Abstract
Membrane polyphosphoinositides (PPIs) are lipid-signaling molecules that undergo metabolic turnover and influence a diverse range of cellular functions. PPIs regulate the activity and/or spatial localization of a number of actin-binding proteins (ABPs) through direct interactions; however, it is much less clear whether ABPs could also be an integral part in regulating PPI signaling. In this study, we show that ABP profilin1 (Pfn1) is an important molecular determinant of the cellular content of PI(4,5)P2 (the most abundant PPI in cells). In growth factor (EGF) stimulation setting, Pfn1 depletion does not impact PI(4,5)P2 hydrolysis but enhances plasma membrane (PM) enrichment of PPIs that are produced downstream of activated PI3-kinase, including PI(3,4,5)P3 and PI(3,4)P2, the latter consistent with increased PM recruitment of SH2-containing inositol 5' phosphatase (SHIP2) (a key enzyme for PI(3,4)P2 biosynthesis). Although Pfn1 binds to PPIs in vitro, our data suggest that Pfn1's affinity to PPIs and PM presence in actual cells, if at all, is negligible, suggesting that Pfn1 is unlikely to directly compete with SHIP2 for binding to PM PPIs. Additionally, we provide evidence for Pfn1's interaction with SHIP2 in cells and modulation of this interaction upon EGF stimulation, raising an alternative possibility of Pfn1 binding as a potential restrictive mechanism for PM recruitment of SHIP2. In conclusion, our findings challenge the dogma of Pfn1's binding to PM by PPI interaction, uncover a previously unrecognized role of Pfn1 in PI(4,5)P2 homeostasis and provide a new mechanistic avenue of how an ABP could potentially impact PI3K signaling byproducts in cells through lipid phosphatase control.
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Affiliation(s)
- Morgan M C Ricci
- Department of Cell Biology, University of Pittsburgh, Pittsburgh, Pennsylvania, USA
| | - Andrew Orenberg
- Department of Bioengineering, University of Pittsburgh, Pittsburgh, Pennsylvania, USA
| | - Lee Ohayon
- Department of Bioengineering, University of Pittsburgh, Pittsburgh, Pennsylvania, USA
| | - David Gau
- Department of Bioengineering, University of Pittsburgh, Pittsburgh, Pennsylvania, USA
| | - Rachel C Wills
- Department of Cell Biology, University of Pittsburgh, Pittsburgh, Pennsylvania, USA
| | - Yongho Bae
- Department of Pathology and Anatomical Science, University at Buffalo, Buffalo, New York, USA
| | - Tuhin Das
- Tavotek Biotherapeutics, Spring House, Pennsylvania, USA
| | - David Koes
- Department of Computational and Systems Biology, University of Pittsburgh, Pittsburgh, Pennsylvania, USA
| | - Gerald R V Hammond
- Department of Cell Biology, University of Pittsburgh, Pittsburgh, Pennsylvania, USA.
| | - Partha Roy
- Department of Bioengineering, University of Pittsburgh, Pittsburgh, Pennsylvania, USA; Department of Pathology, University of Pittsburgh, Pittsburgh, Pennsylvania, USA.
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2
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Eder I, Yu V, Chen F, Gau D, Joy M, Lucas P, Boone D, Lee AV, Roy P. MRTF promotes breast cancer cell motility through SRF-dependent upregulation of DIAPH3 expression. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2023:2023.12.21.572883. [PMID: 38187641 PMCID: PMC10769385 DOI: 10.1101/2023.12.21.572883] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/09/2024]
Abstract
Dysregulated actin cytoskeleton gives rise to aberrant cell motility and metastatic spread of tumor cells. The MRTF-SRF transcriptional complex plays a key role in regulating the expressions of actin cytoskeleton-modulatory genes. In this study, we demonstrate that MRTF's interaction with SRF is critical for migration and invasion of breast cancer cells. Disruption of the MRTF-SRF interaction suppresses membrane dynamics affecting the frequency and the effectiveness of membrane protrusion during cell motility. Consistent with these phenotypic changes, we further show that MRTF promotes actin polymerization at the leading edge, a key aspect of membrane protrusion, and migration of breast cancer cells through upregulating the expression of formin-family actin nucleating/elongating protein encoding gene DIAPH3 in an SRF-dependent manner. In support of these findings, multiplexed quantitative immunohistochemistry and transcriptome analyses of clinical specimens of breast cancer further demonstrate a positive correlation between nuclear localization of MRTF with malignant traits of cancer cells as well as enrichment of MRTF/SRF gene signature in distant metastases relative to primary tumors. In conclusion, this study for the first time links the MRTF/SRF signaling axis to cell migration through the regulation of a specific actin-binding protein, and provides evidence for an association between MRTF/SRF activity and malignancy in human breast cancer.
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3
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Huang Z, Zhang C, Zhu K, Hu J, Xu E, Ma X, Wang Y, Zhu Y, Zhu J. (E)-SIS3 suppressed osteosarcoma progression via promoting cell apoptosis, arresting cell cycle, and regulating the tumor immune microenvironment. Drug Dev Res 2023; 84:1751-1763. [PMID: 37784254 DOI: 10.1002/ddr.22120] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2023] [Revised: 09/10/2023] [Accepted: 09/22/2023] [Indexed: 10/04/2023]
Abstract
Osteosarcoma is a prevalent malignant bone tumor with a poor prognosis. Mothers against decapentaplegic homolog 3 (Smad3) present as a therapeutic target in antitumor treatment, whereas its functions in the osteosarcoma have not been well explored. In the current study, we aimed to investigate the effects of Smad3 in the progression of osteosarcoma. The tumor immune single-cell hub 2 website was used for graph-based visualization of Smad3 status in osteosarcoma single-cell database. Western Blot was applied to detect the expression of Smad3 protein in cell lines. Colony formation and cell counting kit-8 assays were used to evaluate cell proliferation. Transwell and wound healing assays were used to detect the migration and invasion abilities of cells. Cell apoptosis rates and cell cycle changes were explored by using flow cytometry analysis. The xenograft tumor growth model was applied to explore the effect in tumor growth after Smad3 blockage in vivo. Moreover, to confirm the potential mechanism of Smad3's effects on osteosarcoma, bioinformatics analysis was performed in TARGET-Osteosarcoma and GSE19276 databases. Our study found that the Smad3 protein is overexpressed in 143B and U2OS cells, suppressing the expression of Smad3 protein in osteosarcoma cells by Smad3 target inhibitor (E)-SIS3 or lentivirus can inhibit the proliferation, migration, invasion, promote cell apoptosis, arrest cell G1 cycle in osteosarcoma cells in vitro, and suppress tumor growth in vivo. Furthermore, the bioinformatics analysis demonstrated that high expression of Smad3 is closely associated with low immune status in TARGET-Osteosarcoma and GSE19276 databases. Our study suggested that Smad3 could contribute positively to osteosarcoma progression via the regulation of tumor immune microenvironment, and Smad3 may represent as an valuable potential therapeutic target in osteosarcoma therapy.
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Affiliation(s)
- Zhen Huang
- Department of Orthopaedic, Shanghai Tenth People's Hospital, School of Medicine, Tongji University, Shanghai, China
| | - Chunlin Zhang
- Department of Orthopaedic, Shanghai Tenth People's Hospital, School of Medicine, Tongji University, Shanghai, China
| | - Kunpeng Zhu
- Department of Orthopaedic, Shanghai Tenth People's Hospital, School of Medicine, Tongji University, Shanghai, China
| | - Jianping Hu
- Department of Orthopaedic, Shanghai Tenth People's Hospital, School of Medicine, Tongji University, Shanghai, China
| | - Enjie Xu
- Department of Orthopaedic, Shanghai Tenth People's Hospital, School of Medicine, Tongji University, Shanghai, China
| | - Xiaolong Ma
- Department of Orthopaedic, Shanghai Tenth People's Hospital, School of Medicine, Tongji University, Shanghai, China
| | - Yongjie Wang
- Department of Orthopaedic, Shanghai Tenth People's Hospital, School of Medicine, Tongji University, Shanghai, China
| | - Yurun Zhu
- Department of Orthopaedic, Shanghai Tenth People's Hospital, School of Medicine, Tongji University, Shanghai, China
| | - Jiazhuang Zhu
- Department of Orthopaedic, Shanghai Tenth People's Hospital, School of Medicine, Tongji University, Shanghai, China
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4
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Zhang J, Li S, Zhang X, Li C, Zhang J, Zhou W. LncRNA HLA-F-AS1 promotes colorectal cancer metastasis by inducing PFN1 in colorectal cancer-derived extracellular vesicles and mediating macrophage polarization. Cancer Gene Ther 2021; 28:1269-1284. [PMID: 33531647 DOI: 10.1038/s41417-020-00276-3] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2020] [Revised: 11/04/2020] [Accepted: 11/24/2020] [Indexed: 02/07/2023]
Abstract
Colorectal cancer (CRC) is a prevalent malignancy with high incidence and low 5-year survival. Long non-coding RNAs (lncRNAs), a kind of specific RNA transcript, are increasingly implicated in tumor growth, metastasis, invasion, and prognosis by regulating the tumor microenvironment in extracellular vesicles (EVs). This study aims at investigating the potential effect of lncRNA HLA-F-AS1 on CRC by affecting the profilin 1 (PFN1) expression pattern in the tumor EVs. The expression patterns of HLA-F-AS1 and miR-375 were determined by RT-qPCR in the CRC tissues and cells. CCK-8 and Transwell assays were conducted to detect the cell proliferation and migration, and invasion, respectively. Western blot analysis was performed to measure the expression pattern of the epithelial-mesenchymal transition (EMT) markers. Bioinformatics prediction website and dual-luciferase reporter assay were conducted to verify the interaction between HLA-F-AS1 and miR-375. The CRC-derived EVs were extracted with the expression pattern of PFN1 determined by ELISA, while its effect on the macrophage polarization was assessed by flow cytometry. The effect of PFN1-treated macrophages on CRC cell proliferation and migration was observed by subcutaneous tumorigenesis experiments in nude mice. The results indicated that the HLA-F-AS1 expression pattern was increased in the CRC tissues and cells, which promoted the migration, invasion, and EMT of CRC cells in vitro. Mechanistically, HLA-F-AS1 competitively bound to miR-375 and inversely regulated miR-375 expression pattern. Interestingly, PFN1 was identified as a direct target of miR-375, and positively modulated by HLA-F-AS1 by binding to miR-375. Overexpression of HLA-F-AS1 repressed miR-375 and promoted the PFN1 expression pattern in CRC cells and CRC-derived EVs, further promoting M2 polarization of macrophages. Furthermore, macrophages treated with PFN1 in CRC-derived EVs stimulated CRC cell proliferation and migration in vitro and in vivo. Collectively, these outcomes highlight that HLA-F-AS1 promotes the expression pattern of PFN1 in CRC-EVs by inhibiting miR-375, thereby polarizing macrophages toward M2 phenotype, and aggravating the tumorigenesis of CRC, eliciting that HLA-F-AS1 may serve as a viable and promising therapeutic strategy for CRC.
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Affiliation(s)
- Jing Zhang
- Department of Colorectal and Anal Surgery, The First Hospital of Jilin University, Changchun, 130000, P.R. China
| | - Shiquan Li
- Department of Colorectal and Anal Surgery, The First Hospital of Jilin University, Changchun, 130000, P.R. China
| | - Xiaona Zhang
- Department of Anesthesiology, The First Hospital of Jilin University, Changchun, 130000, P.R. China
| | - Chao Li
- Department of Colorectal and Anal Surgery, The First Hospital of Jilin University, Changchun, 130000, P.R. China
| | - Jiantao Zhang
- Department of Colorectal and Anal Surgery, The First Hospital of Jilin University, Changchun, 130000, P.R. China.
| | - Wenli Zhou
- Department of Neonatology, The First Hospital of Jilin University, Changchun, 130000, P.R. China.
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5
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Zembroski AS, Andolino C, Buhman KK, Teegarden D. Proteomic Characterization of Cytoplasmic Lipid Droplets in Human Metastatic Breast Cancer Cells. Front Oncol 2021; 11:576326. [PMID: 34141606 PMCID: PMC8204105 DOI: 10.3389/fonc.2021.576326] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2020] [Accepted: 05/10/2021] [Indexed: 12/19/2022] Open
Abstract
One of the characteristic features of metastatic breast cancer is increased cellular storage of neutral lipid in cytoplasmic lipid droplets (CLDs). CLD accumulation is associated with increased cancer aggressiveness, suggesting CLDs contribute to metastasis. However, how CLDs contribute to metastasis is not clear. CLDs are composed of a neutral lipid core, a phospholipid monolayer, and associated proteins. Proteins that associate with CLDs regulate both cellular and CLD metabolism; however, the proteome of CLDs in metastatic breast cancer and how these proteins may contribute to breast cancer progression is unknown. Therefore, the purpose of this study was to identify the proteome and assess the characteristics of CLDs in the MCF10CA1a human metastatic breast cancer cell line. Utilizing shotgun proteomics, we identified over 1500 proteins involved in a variety of cellular processes in the isolated CLD fraction. Interestingly, unlike other cell lines such as adipocytes or enterocytes, the most enriched protein categories were involved in cellular processes outside of lipid metabolism. For example, cell-cell adhesion was the most enriched category of proteins identified, and many of these proteins have been implicated in breast cancer metastasis. In addition, we characterized CLD size and area in MCF10CA1a cells using transmission electron microscopy. Our results provide a hypothesis-generating list of potential players in breast cancer progression and offers a new perspective on the role of CLDs in cancer.
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Affiliation(s)
- Alyssa S Zembroski
- Department of Nutrition Science, Purdue University, West Lafayette, IN, United States
| | - Chaylen Andolino
- Department of Nutrition Science, Purdue University, West Lafayette, IN, United States
| | - Kimberly K Buhman
- Department of Nutrition Science, Purdue University, West Lafayette, IN, United States
| | - Dorothy Teegarden
- Department of Nutrition Science, Purdue University, West Lafayette, IN, United States
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6
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Akkoc Y, Peker N, Akcay A, Gozuacik D. Autophagy and Cancer Dormancy. Front Oncol 2021; 11:627023. [PMID: 33816262 PMCID: PMC8017298 DOI: 10.3389/fonc.2021.627023] [Citation(s) in RCA: 34] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2020] [Accepted: 01/22/2021] [Indexed: 12/13/2022] Open
Abstract
Metastasis and relapse account for the great majority of cancer-related deaths. Most metastatic lesions are micro metastases that have the capacity to remain in a non-dividing state called “dormancy” for months or even years. Commonly used anticancer drugs generally target actively dividing cancer cells. Therefore, cancer cells that remain in a dormant state evade conventional therapies and contribute to cancer recurrence. Cellular and molecular mechanisms of cancer dormancy are not fully understood. Recent studies indicate that a major cellular stress response mechanism, autophagy, plays an important role in the adaptation, survival and reactivation of dormant cells. In this review article, we will summarize accumulating knowledge about cellular and molecular mechanisms of cancer dormancy, and discuss the role and importance of autophagy in this context.
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Affiliation(s)
- Yunus Akkoc
- Koç University Research Center for Translational Medicine (KUTTAM), Istanbul, Turkey
| | - Nesibe Peker
- Koç University Research Center for Translational Medicine (KUTTAM), Istanbul, Turkey
| | - Arzu Akcay
- Yeni Yüzyıl University, School of Medicine, Private Gaziosmanpaşa Hospital, Department of Pathology, Istanbul, Turkey
| | - Devrim Gozuacik
- Koç University Research Center for Translational Medicine (KUTTAM), Istanbul, Turkey.,Koç University School of Medicine, Istanbul, Turkey.,Sabancı University Nanotechnology Research and Application Center (SUNUM), Istanbul, Turkey
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7
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Profilin-1; a novel regulator of DNA damage response and repair machinery in keratinocytes. Mol Biol Rep 2021; 48:1439-1452. [PMID: 33590416 PMCID: PMC7925496 DOI: 10.1007/s11033-021-06210-6] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2020] [Accepted: 01/29/2021] [Indexed: 10/25/2022]
Abstract
Profilin-1 (PFN1) regulates actin polymerization and cytoskeletal growth. Despite the essential roles of PFN1 in cell integration, its subcellular function in keratinocyte has not been elucidated yet. Here we characterize the specific regulation of PFN1 in DNA damage response and repair machinery. PFN1 depletion accelerated DNA damage-mediated apoptosis exhibiting PTEN loss of function instigated by increased phosphorylated inactivation followed by high levels of AKT activation. PFN1 changed its predominant cytoplasmic localization to the nucleus upon DNA damage and subsequently restored the cytoplasmic compartment during the recovery time. Even though γH2AX was recruited at the sites of DNA double strand breaks in response to DNA damage, PFN1-deficient cells failed to recruit DNA repair factors, whereas control cells exhibited significant increases of these genes. Additionally, PFN1 depletion resulted in disruption of PTEN-AKT cascade upon DNA damage and CHK1-mediated cell cycle arrest was not recovered even after the recovery time exhibiting γH2AX accumulation. This might suggest PFN1 roles in regulating DNA damage response and repair machinery to protect cells from DNA damage. Future studies addressing the crosstalk and regulation of PTEN-related DNA damage sensing and repair pathway choice by PFN1 may further aid to identify new mechanistic insights for various DNA repair disorders.
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8
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Papa R, Penco F, Volpi S, Gattorno M. Actin Remodeling Defects Leading to Autoinflammation and Immune Dysregulation. Front Immunol 2021. [PMID: 33488606 DOI: 10.3389/fimmu.2020.604206)] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/04/2022] Open
Abstract
A growing number of monogenic immune-mediated diseases have been related to genes involved in pathways of actin cytoskeleton remodeling. Increasing evidences associate cytoskeleton defects to autoinflammatory diseases and primary immunodeficiencies. We reviewed the pathways of actin cytoskeleton remodeling in order to identify inflammatory and immunological manifestations associated to pathological variants. We list more than twenty monogenic diseases, ranging from pure autoinflammatory conditions as familial Mediterranean fever, mevalonate kinase deficiency and PAPA syndrome, to classic and novel primary immunodeficiencies as Wiskott-Aldrich syndrome and DOCK8 deficiency, characterized by the presence of concomitant inflammatory and autoimmune manifestations, such as vasculitis and cytopenia, to severe and recurrent infections. We classify these disorders according to the role of the mutant gene in actin cytoskeleton remodeling, and in particular as disorders of transcription, elongation, branching and activation of actin. This expanding field of rare immune disorders offers a new perspective to all immunologists to better understand the physiological and pathological role of actin cytoskeleton in cells of innate and adaptive immunity.
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Affiliation(s)
- Riccardo Papa
- Center for Autoinflammatory Diseases and Immunodeficiencies, IRCCS Istituto Giannina Gaslini, Genoa, Italy
| | - Federica Penco
- Center for Autoinflammatory Diseases and Immunodeficiencies, IRCCS Istituto Giannina Gaslini, Genoa, Italy
| | - Stefano Volpi
- Center for Autoinflammatory Diseases and Immunodeficiencies, IRCCS Istituto Giannina Gaslini, Genoa, Italy
| | - Marco Gattorno
- Center for Autoinflammatory Diseases and Immunodeficiencies, IRCCS Istituto Giannina Gaslini, Genoa, Italy
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9
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Papa R, Penco F, Volpi S, Gattorno M. Actin Remodeling Defects Leading to Autoinflammation and Immune Dysregulation. Front Immunol 2021; 11:604206. [PMID: 33488606 PMCID: PMC7817698 DOI: 10.3389/fimmu.2020.604206] [Citation(s) in RCA: 39] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2020] [Accepted: 11/19/2020] [Indexed: 12/12/2022] Open
Abstract
A growing number of monogenic immune-mediated diseases have been related to genes involved in pathways of actin cytoskeleton remodeling. Increasing evidences associate cytoskeleton defects to autoinflammatory diseases and primary immunodeficiencies. We reviewed the pathways of actin cytoskeleton remodeling in order to identify inflammatory and immunological manifestations associated to pathological variants. We list more than twenty monogenic diseases, ranging from pure autoinflammatory conditions as familial Mediterranean fever, mevalonate kinase deficiency and PAPA syndrome, to classic and novel primary immunodeficiencies as Wiskott-Aldrich syndrome and DOCK8 deficiency, characterized by the presence of concomitant inflammatory and autoimmune manifestations, such as vasculitis and cytopenia, to severe and recurrent infections. We classify these disorders according to the role of the mutant gene in actin cytoskeleton remodeling, and in particular as disorders of transcription, elongation, branching and activation of actin. This expanding field of rare immune disorders offers a new perspective to all immunologists to better understand the physiological and pathological role of actin cytoskeleton in cells of innate and adaptive immunity.
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Affiliation(s)
- Riccardo Papa
- Center for Autoinflammatory Diseases and Immunodeficiencies, IRCCS Istituto Giannina Gaslini, Genoa, Italy
| | - Federica Penco
- Center for Autoinflammatory Diseases and Immunodeficiencies, IRCCS Istituto Giannina Gaslini, Genoa, Italy
| | - Stefano Volpi
- Center for Autoinflammatory Diseases and Immunodeficiencies, IRCCS Istituto Giannina Gaslini, Genoa, Italy
| | - Marco Gattorno
- Center for Autoinflammatory Diseases and Immunodeficiencies, IRCCS Istituto Giannina Gaslini, Genoa, Italy
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10
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Allen A, Gau D, Francoeur P, Sturm J, Wang Y, Martin R, Maranchie J, Duensing A, Kaczorowski A, Duensing S, Wu L, Lotze MT, Koes D, Storkus WJ, Roy P. Actin-binding protein profilin1 promotes aggressiveness of clear-cell renal cell carcinoma cells. J Biol Chem 2020; 295:15636-15649. [PMID: 32883810 PMCID: PMC7667959 DOI: 10.1074/jbc.ra120.013963] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2020] [Revised: 09/01/2020] [Indexed: 12/14/2022] Open
Abstract
Clear-cell renal cell carcinoma (ccRCC), the most common subtype of renal cancer, has a poor clinical outcome. A hallmark of ccRCC is genetic loss-of-function of VHL (von Hippel-Lindau) that leads to a highly vascularized tumor microenvironment. Although many ccRCC patients initially respond to antiangiogenic therapies, virtually all develop progressive, drug-refractory disease. Given the role of dysregulated expressions of cytoskeletal and cytoskeleton-regulatory proteins in tumor progression, we performed analyses of The Cancer Genome Atlas (TCGA) transcriptome data for different classes of actin-binding proteins to demonstrate that increased mRNA expression of profilin1 (Pfn1), Arp3, cofilin1, Ena/VASP, and CapZ, is an indicator of poor prognosis in ccRCC. Focusing further on Pfn1, we performed immunohistochemistry-based classification of Pfn1 staining in tissue microarrays, which indicated Pfn1 positivity in both tumor and stromal cells; however, the vast majority of ccRCC tumors tend to be Pfn1-positive selectively in stromal cells only. This finding is further supported by evidence for dramatic transcriptional up-regulation of Pfn1 in tumor-associated vascular endothelial cells in the clinical specimens of ccRCC. In vitro studies support the importance of Pfn1 in proliferation and migration of RCC cells and in soluble Pfn1's involvement in vascular endothelial cell tumor cell cross-talk. Furthermore, proof-of-concept studies demonstrate that treatment with a novel computationally designed Pfn1-actin interaction inhibitor identified herein reduces proliferation and migration of RCC cells in vitro and RCC tumor growth in vivo Based on these findings, we propose a potentiating role for Pfn1 in promoting tumor cell aggressiveness in the setting of ccRCC.
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Affiliation(s)
- Abigail Allen
- Department of Bioengineering, University of Pittsburgh, Pittsburgh, Pennsylvania, USA
| | - David Gau
- Department of Bioengineering, University of Pittsburgh, Pittsburgh, Pennsylvania, USA
| | - Paul Francoeur
- Department of Computational and Systems Biology, University of Pittsburgh, Pittsburgh, Pennsylvania, USA
| | - Jordan Sturm
- Department of Bioengineering, University of Pittsburgh, Pittsburgh, Pennsylvania, USA
| | - Yue Wang
- Department of Surgery, University of Pittsburgh, Pittsburgh, Pennsylvania, USA
| | - Ryan Martin
- Department of Biology, University of Pittsburgh, Pittsburgh, Pennsylvania, USA
| | - Jodi Maranchie
- Department of Urology, University of Pittsburgh, Pittsburgh, Pennsylvania, USA
| | - Anette Duensing
- Department of Pathology, University of Pittsburgh, Pittsburgh, Pennsylvania, USA
| | - Adam Kaczorowski
- Department of Urology, Heidelberg School of Medicine, Heidelberg, Germany
| | - Stefan Duensing
- Department of Urology, Heidelberg School of Medicine, Heidelberg, Germany
| | - Lily Wu
- Department of Urology, University of California, Los Angeles, Los Angeles, California, USA
| | - Michael T. Lotze
- Department of Bioengineering, University of Pittsburgh, Pittsburgh, Pennsylvania, USA,Department of Surgery, University of Pittsburgh, Pittsburgh, Pennsylvania, USA,Department of Immunology, University of Pittsburgh, Pittsburgh, Pennsylvania USA
| | - David Koes
- Department of Computational and Systems Biology, University of Pittsburgh, Pittsburgh, Pennsylvania, USA
| | - Walter J. Storkus
- Department of Bioengineering, University of Pittsburgh, Pittsburgh, Pennsylvania, USA,Department of Urology, University of Pittsburgh, Pittsburgh, Pennsylvania, USA,Department of Immunology, University of Pittsburgh, Pittsburgh, Pennsylvania USA,Department of Dermatology, University of Pittsburgh, Pittsburgh, Pennsylvania USA
| | - Partha Roy
- Department of Bioengineering, University of Pittsburgh, Pittsburgh, Pennsylvania, USA; Department of Urology, University of Pittsburgh, Pittsburgh, Pennsylvania, USA.
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11
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Gau D, Vignaud L, Allen A, Guo Z, Sahel J, Boone D, Koes D, Guillonneau X, Roy P. Disruption of profilin1 function suppresses developmental and pathological retinal neovascularization. J Biol Chem 2020; 295:9618-9629. [PMID: 32444495 PMCID: PMC7363146 DOI: 10.1074/jbc.ra120.012613] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2020] [Revised: 05/20/2020] [Indexed: 12/18/2022] Open
Abstract
Angiogenesis-mediated neovascularization in the eye is usually associated with visual complications. Pathological angiogenesis is particularly prominent in the retina in the settings of proliferative diabetic retinopathy, in which it can lead to permanent loss of vision. In this study, by bioinformatics analyses, we provide evidence for elevated expression of actin-binding protein PFN1 (profilin1) in the retinal vascular endothelial cells (VECs) of individuals with proliferative diabetic retinopathy, findings further supported by gene expression analyses for PFN1 in experimentally induced abnormal retinal neovascularization in an oxygen-induced retinopathy murine model. We observed that in a conditional knockout mouse model, postnatal deletion of the Pfn1 gene in VECs leads to defects in tip cell activity (marked by impaired filopodial protrusions) and reduced vascular sprouting, resulting in hypovascularization during developmental angiogenesis in the retina. Consistent with these findings, an investigative small molecule compound targeting the PFN1-actin interaction reduced random motility, proliferation, and cord morphogenesis of retinal VECs in vitro and experimentally induced abnormal retinal neovascularization in vivo In summary, these findings provide the first direct in vivo evidence that PFN1 is required for formation of actin-based protrusive structures and developmental angiogenesis in the retina. The proof of concept of susceptibility of abnormal angiogenesis to small molecule intervention of PFN1-actin interaction reported here lays a conceptual foundation for targeting PFN1 as a possible strategy in angiogenesis-dependent retinal diseases.
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Affiliation(s)
- David Gau
- Department of Bioengineering, University of Pittsburgh, Pittsburgh, Pennsylvania, USA
| | - Lucile Vignaud
- Institut de la Vision, Sorbonne Université, INSERM, Paris, France
| | - Abigail Allen
- Department of Bioengineering, University of Pittsburgh, Pittsburgh, Pennsylvania, USA
| | - Zhijian Guo
- Department of Nephrology, Southern Medical University, Guangzhou, China
| | - Jose Sahel
- Institut de la Vision, Sorbonne Université, INSERM, Paris, France,Department of Ophthalmology, University of Pittsburgh Medical Center, Pittsburgh, Pennsylvania, USA
| | - David Boone
- Department of Biomedical Informatics, University of Pittsburgh, Pittsburgh, Pennsylvania, USA
| | - David Koes
- Department of Computational Biology, University of Pittsburgh, Pittsburgh, Pennsylvania, USA
| | | | - Partha Roy
- Department of Bioengineering, University of Pittsburgh, Pittsburgh, Pennsylvania, USA .,Department of Pathology, University of Pittsburgh, Pittsburgh, Pennsylvania, USA
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12
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Huang Y, Sun H, Ma X, Zeng Y, Pan Y, Yu D, Liu Z, Xiang Y. HLA-F-AS1/miR-330-3p/PFN1 axis promotes colorectal cancer progression. Life Sci 2019; 254:117180. [PMID: 31863778 DOI: 10.1016/j.lfs.2019.117180] [Citation(s) in RCA: 34] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2019] [Revised: 12/10/2019] [Accepted: 12/14/2019] [Indexed: 02/07/2023]
Abstract
OBJECTIVE Accumulating Studies implies that long-chain non-coding RNA (lncRNA) plays a vital regulatory role in the occurrence and progression of tumors. This study aimed to explore the function and mechanism of lncRNA HLA-F antisense RNA 1 (HLA-F-AS1) in colorectal cancer (CRC). METHODS Expressions of HLA-F-AS1, miR-330-3p and profilin 1 (PFN1) mRNA in CRC tissues were detected by RT-PCR. MTT assay was used to detect cell proliferation, and Transwell assay was used to detect cell migration and invasion. In addition, PFN1 and apoptosis-related protein Bcl-2 associated X (Bax) and B cell lymphoma/leukmia-2 (Bcl2) were detected by western blot. Interactions between miR-330-3p and HLA-F-AS1 or the 3'UTR of PFN1 were predicted and determined by bioinformatics analysis and luciferase reporter assay. RESULTS Expressions of HLA-F-AS1 and PFN1 were significantly up-regulated while miR-330-3p was significantly down-regulated in CRC tissues and cell lines. Over-expressions of HLA-F-AS1 or transfection of miR-330-3p inhibitors could promote the proliferation, migration and invasion and block apoptosis of CRC cells, whereas knockdown of HLA-F-AS1 or transfection of miR-330-3p mimics led to the opposite effects. Additionally, HLA-F-AS1 could down-regulate miR-330-3p via sponging it. HLA-F-AS1 also enhanced the expressions of PFN1, which was validated as a target gene of miR-330-3p. CONCLUSION HLA-F-AS1 promoted CRC progression via regulating miR-330-3p/PFN1 axis.
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Affiliation(s)
- Yongguo Huang
- Department of Laboratory Medicine, Wuhan Children's Hospital, Tongji Medical College, Huazhong University of Science & Technology, Wuhan 430016, Hubei Province, China
| | - Hong Sun
- Department of Laboratory Medicine, Wuhan Children's Hospital, Tongji Medical College, Huazhong University of Science & Technology, Wuhan 430016, Hubei Province, China
| | - Xiang Ma
- Department of Laboratory Medicine, Wuhan Children's Hospital, Tongji Medical College, Huazhong University of Science & Technology, Wuhan 430016, Hubei Province, China
| | - Ye Zeng
- Department of Laboratory Medicine, Wuhan Children's Hospital, Tongji Medical College, Huazhong University of Science & Technology, Wuhan 430016, Hubei Province, China
| | - Yang Pan
- Department of Laboratory Medicine, Wuhan Children's Hospital, Tongji Medical College, Huazhong University of Science & Technology, Wuhan 430016, Hubei Province, China
| | - Dongyang Yu
- Department of Laboratory Medicine, Wuhan Children's Hospital, Tongji Medical College, Huazhong University of Science & Technology, Wuhan 430016, Hubei Province, China
| | - Zhisheng Liu
- Department of Neurology, Wuhan Children's Hospital, Tongji Medical College, Huazhong University of Science & Technology, Wuhan 430016, Hubei Province, China
| | - Yun Xiang
- Department of Laboratory Medicine, Wuhan Children's Hospital, Tongji Medical College, Huazhong University of Science & Technology, Wuhan 430016, Hubei Province, China.
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