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Chehade G, El Hajj N, Aittaleb M, Alkailani MI, Bejaoui Y, Mahdi A, Aldaalis AAH, Verbiest M, Lelotte J, Ruiz-Reig N, Durá I, Raftopoulos C, Tajeddine N, Tissir F. DIAPH3 predicts survival of patients with MGMT-methylated glioblastoma. Front Oncol 2024; 14:1359652. [PMID: 38454929 PMCID: PMC10917989 DOI: 10.3389/fonc.2024.1359652] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2023] [Accepted: 02/07/2024] [Indexed: 03/09/2024] Open
Abstract
Background Glioblastoma is one of the most aggressive primary brain tumors, with a poor outcome despite multimodal treatment. Methylation of the MGMT promoter, which predicts the response to temozolomide, is a well-established prognostic marker for glioblastoma. However, a difference in survival can still be detected within the MGMT methylated group, with some patients exhibiting a shorter survival than others, emphasizing the need for additional predictive factors. Methods We analyzed DIAPH3 expression in glioblastoma samples from the cancer genome atlas (TCGA). We also retrospectively analyzed one hundred seventeen histological glioblastomas from patients operated on at Saint-Luc University Hospital between May 2013 and August 2019. We analyzed the DIAPH3 expression, explored the relationship between mRNA levels and Patient's survival after the surgical resection. Finally, we assessed the methylation pattern of the DIAPH3 promoter using a targeted deep bisulfite sequencing approach. Results We found that 36% and 1% of the TCGA glioblastoma samples exhibit copy number alterations and mutations in DIAPH3, respectively. We scrutinized the expression of DIAPH3 at single cell level and detected an overlap with MKI67 expression in glioblastoma proliferating cells, including neural progenitor-like, oligodendrocyte progenitor-like and astrocyte-like states. We quantitatively analyzed DIAPH3 expression in our cohort and uncovered a positive correlation between DIAPH3 mRNA level and patient's survival. The effect of DIAPH3 was prominent in MGMT-methylated glioblastoma. Finally, we report that the expression of DIAPH3 is at least partially regulated by the methylation of three CpG sites in the promoter region. Conclusion We propose that combining the DIAPH3 expression with MGMT methylation could offer a better prediction of survival and more adapted postsurgical treatment for patients with MGMT-methylated glioblastoma.
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Affiliation(s)
- Georges Chehade
- Université Catholique de Louvain, Institute of Neuroscience, Cellular and Molecular Division, Brussels, Belgium
| | - Nady El Hajj
- College of Health and Life Sciences, Hamad Bin Khalifa University, Doha, Qatar
| | - Mohamed Aittaleb
- College of Health and Life Sciences, Hamad Bin Khalifa University, Doha, Qatar
| | - Maisa I. Alkailani
- College of Health and Life Sciences, Hamad Bin Khalifa University, Doha, Qatar
| | - Yosra Bejaoui
- College of Health and Life Sciences, Hamad Bin Khalifa University, Doha, Qatar
| | - Asma Mahdi
- College of Health and Life Sciences, Hamad Bin Khalifa University, Doha, Qatar
| | - Arwa A. H. Aldaalis
- College of Health and Life Sciences, Hamad Bin Khalifa University, Doha, Qatar
| | - Michael Verbiest
- Laboratory of Population Genomics, Department of Internal Medicine, Erasmus University Medical Center, Rotterdam, Netherlands
| | - Julie Lelotte
- Department of Neuropathology, Saint-Luc University Hospital, Brussels, Belgium
| | - Nuria Ruiz-Reig
- Université Catholique de Louvain, Institute of Neuroscience, Cellular and Molecular Division, Brussels, Belgium
| | - Irene Durá
- Université Catholique de Louvain, Institute of Neuroscience, Cellular and Molecular Division, Brussels, Belgium
| | | | - Nicolas Tajeddine
- Université Catholique de Louvain, Institute of Neuroscience, Cellular and Molecular Division, Brussels, Belgium
| | - Fadel Tissir
- Université Catholique de Louvain, Institute of Neuroscience, Cellular and Molecular Division, Brussels, Belgium
- College of Health and Life Sciences, Hamad Bin Khalifa University, Doha, Qatar
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Lau EOC, Damiani D, Chehade G, Ruiz-Reig N, Saade R, Jossin Y, Aittaleb M, Schakman O, Tajeddine N, Gailly P, Tissir F. DIAPH3 deficiency links microtubules to mitotic errors, defective neurogenesis, and brain dysfunction. eLife 2021; 10:e61974. [PMID: 33899739 PMCID: PMC8102060 DOI: 10.7554/elife.61974] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2020] [Accepted: 04/23/2021] [Indexed: 12/13/2022] Open
Abstract
Diaphanous (DIAPH) three (DIAPH3) is a member of the formin proteins that have the capacity to nucleate and elongate actin filaments and, therefore, to remodel the cytoskeleton. DIAPH3 is essential for cytokinesis as its dysfunction impairs the contractile ring and produces multinucleated cells. Here, we report that DIAPH3 localizes at the centrosome during mitosis and regulates the assembly and bipolarity of the mitotic spindle. DIAPH3-deficient cells display disorganized cytoskeleton and multipolar spindles. DIAPH3 deficiency disrupts the expression and/or stability of several proteins including the kinetochore-associated protein SPAG5. DIAPH3 and SPAG5 have similar expression patterns in the developing brain and overlapping subcellular localization during mitosis. Knockdown of SPAG5 phenocopies DIAPH3 deficiency, whereas its overexpression rescues the DIAHP3 knockdown phenotype. Conditional inactivation of Diaph3 in mouse cerebral cortex profoundly disrupts neurogenesis, depleting cortical progenitors and neurons, leading to cortical malformation and autistic-like behavior. Our data uncover the uncharacterized functions of DIAPH3 and provide evidence that this protein belongs to a molecular toolbox that links microtubule dynamics during mitosis to aneuploidy, cell death, fate determination defects, and cortical malformation.
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Affiliation(s)
- Eva On-Chai Lau
- Université catholique de Louvain, Institute of Neuroscience, Developmental NeurobiologyBrusselsBelgium
| | - Devid Damiani
- Université catholique de Louvain, Institute of Neuroscience, Developmental NeurobiologyBrusselsBelgium
| | - Georges Chehade
- Université catholique de Louvain, Institute of Neuroscience, Developmental NeurobiologyBrusselsBelgium
| | - Nuria Ruiz-Reig
- Université catholique de Louvain, Institute of Neuroscience, Developmental NeurobiologyBrusselsBelgium
| | - Rana Saade
- Université catholique de Louvain, Institute of Neuroscience, Developmental NeurobiologyBrusselsBelgium
| | - Yves Jossin
- Université catholique de Louvain, Institute of Neuroscience, Mammalian Development and Cell BiologyBrusselsBelgium
| | | | - Olivier Schakman
- Université catholique de Louvain, Institute of Neuroscience, Cell PhysiologyBrusselsBelgium
| | - Nicolas Tajeddine
- Université catholique de Louvain, Institute of Neuroscience, Cell PhysiologyBrusselsBelgium
| | - Philippe Gailly
- Université catholique de Louvain, Institute of Neuroscience, Cell PhysiologyBrusselsBelgium
| | - Fadel Tissir
- Université catholique de Louvain, Institute of Neuroscience, Developmental NeurobiologyBrusselsBelgium
- College of Health and Life Sciences, HBKUDohaQatar
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Cangkrama M, Wietecha M, Mathis N, Okumura R, Ferrarese L, Al-Nuaimi D, Antsiferova M, Dummer R, Innocenti M, Werner S. A paracrine activin A- mDia2 axis promotes squamous carcinogenesis via fibroblast reprogramming. EMBO Mol Med 2020; 12:e11466. [PMID: 32150356 PMCID: PMC7136968 DOI: 10.15252/emmm.201911466] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2019] [Revised: 02/06/2020] [Accepted: 02/10/2020] [Indexed: 12/18/2022] Open
Abstract
Cancer‐associated fibroblasts (CAFs) are key regulators of tumorigenesis and promising targets for next‐generation therapies. We discovered that cancer cell‐derived activin A reprograms fibroblasts into pro‐tumorigenic CAFs. Mechanistically, this occurs via Smad2‐mediated transcriptional regulation of the formin mDia2, which directly promotes filopodia formation and cell migration. mDia2 also induces expression of CAF marker genes through prevention of p53 nuclear accumulation, resulting in the production of a pro‐tumorigenic matrisome and secretome. The translational relevance of this finding is reflected by activin A overexpression in tumor cells and of mDia2 in the stroma of skin cancer and other malignancies and the correlation of high activin A/mDia2 levels with poor patient survival. Blockade of this signaling axis using inhibitors of activin, activin receptors, or mDia2 suppressed cancer cell malignancy and squamous carcinogenesis in 3D organotypic cultures, ex vivo, and in vivo, providing a rationale for pharmacological inhibition of activin A‐mDia2 signaling in stratified cancer patients.
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Affiliation(s)
- Michael Cangkrama
- Department of Biology, Institute of Molecular Health Sciences, ETH Zurich, Zurich, Switzerland
| | - Mateusz Wietecha
- Department of Biology, Institute of Molecular Health Sciences, ETH Zurich, Zurich, Switzerland
| | - Nicolas Mathis
- Department of Biology, Institute of Molecular Health Sciences, ETH Zurich, Zurich, Switzerland
| | - Rin Okumura
- Department of Biology, Institute of Molecular Health Sciences, ETH Zurich, Zurich, Switzerland
| | - Luca Ferrarese
- Department of Biology, Institute of Molecular Health Sciences, ETH Zurich, Zurich, Switzerland
| | - Dunja Al-Nuaimi
- Department of Biology, Institute of Molecular Health Sciences, ETH Zurich, Zurich, Switzerland
| | - Maria Antsiferova
- Department of Biology, Institute of Molecular Health Sciences, ETH Zurich, Zurich, Switzerland
| | - Reinhard Dummer
- Department of Dermatology, University Hospital Zurich, Zurich, Switzerland
| | - Metello Innocenti
- Heidelberg University Biochemistry Center (BZH), Heidelberg University, Heidelberg, Germany
| | - Sabine Werner
- Department of Biology, Institute of Molecular Health Sciences, ETH Zurich, Zurich, Switzerland
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Argenzio E, Innocenti M. The chloride intracellular channel protein CLIC4 inhibits filopodium formation induced by constitutively active mutants of formin mDia2. FEBS Lett 2020; 594:1750-1758. [PMID: 32145706 DOI: 10.1002/1873-3468.13766] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2020] [Revised: 02/14/2020] [Accepted: 03/02/2020] [Indexed: 11/07/2022]
Abstract
Chloride intracellular channel 4 (CLIC4) functions in diverse actin-dependent processes. Upon Rho activation, CLIC4 reversibly translocates from the cytosol to the plasma membrane to regulate cell adhesion and migration. At the plasma membrane, CLIC4 counters the formation of filopodia, which requires actin assembly by the formin mammalian Diaphanous (mDia)2. To this end, mDia2 must be activated through conversion from the closed to the open conformation. Thus, CLIC4 could harness the activation or the open conformation of mDia2 to inhibit filopodium formation. Here, we find that CLIC4 silencing enhances the filopodia induced by two constitutively active mDia2 mutants. Furthermore, we report that CLIC4 binds the actin-regulatory region of mDia2 in vitro. These results suggest that CLIC4 modulates the activity of the open conformation of mDia2, shedding new light into how cells may control filopodia.
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Affiliation(s)
- Elisabetta Argenzio
- Division of Cell Biology, The Netherlands Cancer Institute, Amsterdam, The Netherlands
| | - Metello Innocenti
- Heidelberg University Biochemistry Center (BZH), Heidelberg University, Germany
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5
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Sankaran JS, Sen B, Dudakovic A, Paradise CR, Perdue T, Xie Z, McGrath C, Styner M, Newberg J, Uzer G, van Wijnen AJ, Rubin J. Knockdown of formin mDia2 alters lamin B1 levels and increases osteogenesis in stem cells. Stem Cells 2020; 38:102-117. [PMID: 31648392 PMCID: PMC6993926 DOI: 10.1002/stem.3098] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2019] [Revised: 09/03/2019] [Accepted: 09/12/2019] [Indexed: 02/06/2023]
Abstract
Nuclear actin plays a critical role in mediating mesenchymal stem cell (MSC) fate commitment. In marrow-derived MSCs, the principal diaphanous-related formin Diaph3 (mDia2) is present in the nucleus and regulates intranuclear actin polymerization, whereas Diaph1 (mDia1) is localized to the cytoplasm and controls cytoplasmic actin polymerization. We here show that mDia2 can be used as a tool to query actin-lamin nucleoskeletal structure. Silencing mDia2 affected the nucleoskeletal lamin scaffold, altering nuclear morphology without affecting cytoplasmic actin cytoskeleton, and promoted MSC differentiation. Attempting to target intranuclear actin polymerization by silencing mDia2 led to a profound loss in lamin B1 nuclear envelope structure and integrity, increased nuclear height, and reduced nuclear stiffness without compensatory changes in other actin nucleation factors. Loss of mDia2 with the associated loss in lamin B1 promoted Runx2 transcription and robust osteogenic differentiation and suppressed adipogenic differentiation. Hence, mDia2 is a potent tool to query intranuclear actin-lamin nucleoskeletal structure, and its presence serves to retain multipotent stromal cells in an undifferentiated state.
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Affiliation(s)
- Jeyantt S. Sankaran
- Department of Medicine, University of North Carolina Chapel
Hill, Chapel Hill, North Carolina
| | - Buer Sen
- Department of Medicine, University of North Carolina Chapel
Hill, Chapel Hill, North Carolina
| | - Amel Dudakovic
- Department of Orthopedic Surgery and Biochemistry and
Molecular Biology, Mayo Clinic, Rochester, Minnesota
| | - Christopher R. Paradise
- Graduate School of Biomedical Sciences and Center for
Regenerative Medicine, Mayo Clinic, Rochester, Minnesota
| | - Tony Perdue
- Department of Biology, University of North Carolina Chapel
Hill, Chapel Hill, North Carolina
| | - Zhihui Xie
- Department of Medicine, University of North Carolina Chapel
Hill, Chapel Hill, North Carolina
| | - Cody McGrath
- Department of Medicine, University of North Carolina Chapel
Hill, Chapel Hill, North Carolina
| | - Maya Styner
- Department of Medicine, University of North Carolina Chapel
Hill, Chapel Hill, North Carolina
| | - Joshua Newberg
- Department of Mechanical and Biomedical Engineering, Boise
State University, Boise, Idaho
| | - Gunes Uzer
- Department of Mechanical and Biomedical Engineering, Boise
State University, Boise, Idaho
| | - Andre J. van Wijnen
- Department of Orthopedic Surgery and Biochemistry and
Molecular Biology, Mayo Clinic, Rochester, Minnesota
| | - Janet Rubin
- Department of Medicine, University of North Carolina Chapel
Hill, Chapel Hill, North Carolina
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Abstract
Accurate chromosome segregation in mammalian cells is guided by the centromere, a specialized chromosome region defined by the histone H3 variant centromere protein A (CENP-A). It is not well understood how cells maintain CENP-A levels at centromeres while continuously going through genome replications and cell divisions. A MgcRacGAP-dependent small GTPase molecular switch has been shown as essential for centromeric CENP-A maintenance. By using quantitative imaging, pulse-chase and live cell analysis, a recent work has suggested that the diaphanous formin mDia2, a well-established small GTPase effector, functions downstream of this small GTPase pathway to maintain CENP-A levels at centromeres. A constitutively active mDia2 construct is able to rescue the CENP-A loading defect caused by MgcRacGAP depletion. This study has uncovered an unsuspected role of the cytoskeleton protein mDia2 as an effector of the MgcRacGAP-dependent small GTPase signaling inside the nucleus to participate in the epigenetic regulation of centromere maintenance during cell cycle.
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Affiliation(s)
- Chenshu Liu
- a Department of Pathology and Cell Biology , Columbia University Medical Center , New York , NY , USA
| | - Yinghui Mao
- a Department of Pathology and Cell Biology , Columbia University Medical Center , New York , NY , USA
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7
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Mei Y, Zhao B, Yang J, Gao J, Wickrema A, Wang D, Chen Y, Ji P. Ineffective erythropoiesis caused by binucleated late-stage erythroblasts in mDia2 hematopoietic specific knockout mice. Haematologica 2015; 101:e1-5. [PMID: 26471482 DOI: 10.3324/haematol.2015.134221] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
Affiliation(s)
- Yang Mei
- Department of Pathology, Feinberg School of Medicine, Northwestern University, Chicago, IL, USA
| | - Baobing Zhao
- Department of Pathology, Feinberg School of Medicine, Northwestern University, Chicago, IL, USA
| | - Jing Yang
- Department of Pathology, Feinberg School of Medicine, Northwestern University, Chicago, IL, USA
| | - Juehua Gao
- Department of Pathology, Feinberg School of Medicine, Northwestern University, Chicago, IL, USA
| | - Amittha Wickrema
- Section of Hematology/Oncology, Department of Medicine, The University of Chicago, IL, USA
| | - Dehua Wang
- Division of Pathology and Laboratory Medicine, Cincinnati Children's Hospital Medical Center, OH, USA
| | - Yihua Chen
- Department of Pathology, Feinberg School of Medicine, Northwestern University, Chicago, IL, USA
| | - Peng Ji
- Department of Pathology, Feinberg School of Medicine, Northwestern University, Chicago, IL, USA
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8
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Abstract
Formin proteins were recognized as effectors of Rho GTPases some 15 years ago. They contribute to different cellular actin cytoskeleton structures by their ability to polymerize straight actin filaments at the barbed end. While not all formins necessarily interact with Rho GTPases, a subgroup of mammalian formins, termed Diaphanous-related formins or DRFs, were shown to be activated by small GTPases of the Rho superfamily. DRFs are autoinhibited in the resting state by an N- to C-terminal interaction that renders the central actin polymerization domain inactive. Upon the interaction with a GTP-bound Rho, Rac, or Cdc42 GTPase, the C-terminal autoregulation domain is displaced from its N-terminal recognition site and the formin becomes active to polymerize actin filaments. In this review we discuss the current knowledge on the structure, activation, and function of formin-GTPase interactions for the mammalian formin families Dia, Daam, FMNL, and FHOD. We describe both direct and indirect interactions of formins with GTPases, which lead to formin activation and cytoskeletal rearrangements. The multifaceted function of formins as effector proteins of Rho GTPases thus reflects the diversity of the actin cytoskeleton in cells.
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Affiliation(s)
- Sonja Kühn
- Center of Advanced European Studies and Research (caesar); Group Physical Biochemistry; Bonn, Germany
| | - Matthias Geyer
- Center of Advanced European Studies and Research (caesar); Group Physical Biochemistry; Bonn, Germany
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