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Pehkonen H, Filippou A, Väänänen J, Lindfors I, Vänttinen M, Ianevski P, Mäkelä A, Munne P, Klefström J, Toppila‐Salmi S, Grénman R, Hagström J, Mäkitie AA, Karhemo P, Monni O. Liprin-α1 contributes to oncogenic MAPK signaling by counteracting ERK activity. Mol Oncol 2024; 18:662-676. [PMID: 38264964 PMCID: PMC10920090 DOI: 10.1002/1878-0261.13593] [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: 07/05/2023] [Revised: 12/15/2023] [Accepted: 01/15/2024] [Indexed: 01/25/2024] Open
Abstract
PTPRF interacting protein alpha 1 (PPFIA1) encodes for liprin-α1, a member of the leukocyte common antigen-related protein tyrosine phosphatase (LAR-RPTPs)-interacting protein family. Liprin-α1 localizes to adhesive and invasive structures in the periphery of cancer cells, where it modulates migration and invasion in head and neck squamous cell carcinoma (HNSCC) and breast cancer. To study the possible role of liprin-α1 in anticancer drug responses, we screened a library of oncology compounds in cell lines with high endogenous PPFIA1 expression. The compounds with the highest differential responses between high PPFIA1-expressing and silenced cells across cell lines were inhibitors targeting mitogen-activated protein kinase kinase (MEK)/extracellular signal-regulated kinases (ERK) signaling. KRAS proto-oncogene, GTPase (KRAS)-mutated MDA-MB-231 cells were more resistant to trametinib upon PPFIA1 knockdown compared with control cells. In contrast, liprin-α1-depleted HNSCC cells with low RAS activity showed a context-dependent response to MEK/ERK inhibitors. Importantly, we showed that liprin-α1 depletion leads to increased p-ERK1/2 levels in all our studied cell lines independent of KRAS mutational status, suggesting a role of liprin-α1 in the regulation of MAPK oncogenic signaling. Furthermore, liprin-α1 depletion led to more pronounced redistribution of RAS proteins to the cell membrane. Our data suggest that liprin-α1 is an important contributor to oncogenic RAS/MAPK signaling, and the status of liprin-α1 may assist in predicting drug responses in cancer cells in a context-dependent manner.
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Affiliation(s)
- Henna Pehkonen
- Applied Tumor Genomics Research Program, Faculty of MedicineUniversity of HelsinkiFinland
| | - Artemis Filippou
- Applied Tumor Genomics Research Program, Faculty of MedicineUniversity of HelsinkiFinland
| | - Juho Väänänen
- Applied Tumor Genomics Research Program, Faculty of MedicineUniversity of HelsinkiFinland
| | - Iida Lindfors
- Applied Tumor Genomics Research Program, Faculty of MedicineUniversity of HelsinkiFinland
| | - Mira Vänttinen
- Applied Tumor Genomics Research Program, Faculty of MedicineUniversity of HelsinkiFinland
| | - Philipp Ianevski
- Institute for Molecular Medicine Finland (FIMM)University of HelsinkiFinland
| | - Anne Mäkelä
- Applied Tumor Genomics Research Program, Faculty of MedicineUniversity of HelsinkiFinland
| | - Pauliina Munne
- Finnish Cancer Institute, FICAN South Helsinki University Hospital & Translational Cancer Medicine, Medical FacultyUniversity of HelsinkiFinland
| | - Juha Klefström
- Finnish Cancer Institute, FICAN South Helsinki University Hospital & Translational Cancer Medicine, Medical FacultyUniversity of HelsinkiFinland
- iCAN Digital Precision Cancer Medicine FlagshipHelsinkiFinland
| | - Sanna Toppila‐Salmi
- Skin and Allergy HospitalHelsinki University Hospital and University of HelsinkiFinland
- Department of Otorhinolaryngology, Kuopio University Hospital and School of Medicine, Institute of Clinical MedicineUniversity of Eastern FinlandKuopioFinland
| | - Reidar Grénman
- Department of Otorhinolaryngology‐Head and Neck SurgeryUniversity of Turku and Turku University HospitalFinland
| | - Jaana Hagström
- Department of PathologyUniversity of Helsinki and Helsinki University HospitalFinland
- Institute of DentistryUniversity of TurkuFinland
| | - Antti A. Mäkitie
- iCAN Digital Precision Cancer Medicine FlagshipHelsinkiFinland
- Department of Otorhinolaryngology‐Head and Neck Surgery, Research Program in Systems OncologyUniversity of Helsinki and Helsinki University HospitalFinland
| | - Piia‐Riitta Karhemo
- Applied Tumor Genomics Research Program, Faculty of MedicineUniversity of HelsinkiFinland
- iCAN Digital Precision Cancer Medicine FlagshipHelsinkiFinland
| | - Outi Monni
- Applied Tumor Genomics Research Program, Faculty of MedicineUniversity of HelsinkiFinland
- iCAN Digital Precision Cancer Medicine FlagshipHelsinkiFinland
- Department of Oncology, Faculty of MedicineUniversity of HelsinkiFinland
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Sjöblom A, Pehkonen H, Jouhi L, Monni O, Randén-Brady R, Karhemo PR, Tarkkanen J, Haglund C, Mattila P, Mäkitie A, Hagström J, Carpén T. Liprin-α1 Expression in Tumor-Infiltrating Lymphocytes Associates with Improved Survival in Patients with HPV-Positive Oropharyngeal Squamous Cell Carcinoma. Head Neck Pathol 2023; 17:647-657. [PMID: 37335526 PMCID: PMC10513983 DOI: 10.1007/s12105-023-01565-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/31/2023] [Accepted: 06/03/2023] [Indexed: 06/21/2023]
Abstract
BACKGROUND Liprin-α1 is a scaffold protein involved in cell adhesion, motility, and invasion in malignancies. Liprin-α1 inhibits the expression of metastatic suppressor CD82 in cancers such as oral carcinoma, and the expression of these proteins has been known to correlate negatively. The role of these proteins has not been previously studied in human papillomavirus (HPV)-related head and neck cancers. Our aim was to assess the clinical and prognostic role of liprin-α1 and CD82 in HPV-positive oropharyngeal squamous cell carcinoma (OPSCC) in comparison to HPV-negative OPSCC. METHODS The data included 139 OPSCC patients treated at the Helsinki University Hospital (HUS) during 2012-2016. Immunohistochemistry was utilized in HPV determination and in biomarker assays. Overall survival (OS) was used in the survival analysis. RESULTS Stronger expression of liprin-α1 in tumor-infiltrating lymphocytes (TILs) was linked to lower cancer stage (p < 0.001) and HPV positivity (p < 0.001). Additionally, we found an association between elevated expression of liprin-α1 and weak expression of CD82 in tumor cells (p = 0.029). In survival analysis, we found significant correlation between favorable OS and stronger expression of liprin-α1 in TILs among the whole patient cohort (p < 0.001) and among HPV-positive patients (p = 0.042). CONCLUSIONS Increased liprin-α1 expression in the TILs is associated with favorable prognosis in OPSCC, especially among HPV-positive patients.
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Affiliation(s)
- Anni Sjöblom
- Department of Pathology, University of Helsinki and Helsinki University Hospital, PO Box 21, 00014 Helsinki, Finland
| | - Henna Pehkonen
- Applied Tumor Genomics Research Program, Faculty of Medicine, University of Helsinki, Helsinki, Finland
| | - Lauri Jouhi
- Department of Otorhinolaryngology, Head and Neck Surgery, University of Helsinki and Helsinki University Hospital, Helsinki, Finland
| | - Outi Monni
- Applied Tumor Genomics Research Program and Department of Oncology, Clinicum, Faculty of Medicine, University of Helsinki, Helsinki, Finland
| | - Reija Randén-Brady
- Department of Pathology, University of Helsinki and Helsinki University Hospital, PO Box 21, 00014 Helsinki, Finland
| | - Piia-Riitta Karhemo
- Applied Tumor Genomics Research Program, Faculty of Medicine, University of Helsinki, Helsinki, Finland
| | - Jussi Tarkkanen
- Department of Pathology, University of Helsinki and Helsinki University Hospital, PO Box 21, 00014 Helsinki, Finland
| | - Caj Haglund
- Research Programs Unit, Translational Cancer Medicine and Department of Surgery, University of Helsinki and Helsinki University Hospital, Helsinki, Finland
| | - Petri Mattila
- Department of Otorhinolaryngology, Head and Neck Surgery, University of Helsinki and Helsinki University Hospital, Helsinki, Finland
| | - Antti Mäkitie
- Department of Otorhinolaryngology, Head and Neck Surgery, University of Helsinki and Helsinki University Hospital, Helsinki, Finland
- Division of Ear, Nose and Throat Diseases, Department of Clinical Sciences, Intervention and Technology, Karolinska Institutet and Karolinska Hospital, Stockholm, Sweden
- Departments of Pathology and of Otorhinolaryngology, Head and Neck Surgery and Research Program in Systems Oncology, Faculty of Medicine, University of Helsinki, Helsinki, Finland
| | - Jaana Hagström
- Department of Pathology and Research Programs Unit, Translational Cancer Medicine, University of Helsinki, Helsinki, Finland
- Department of Oral Pathology and Oral Radiology, University of Turku, Turku, Finland
| | - Timo Carpén
- Departments of Pathology and of Otorhinolaryngology, Head and Neck Surgery and Research Program in Systems Oncology, Faculty of Medicine, University of Helsinki, Helsinki, Finland
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Clements CM, Henen MA, Vögeli B, Shellman YG. The Structural Dynamics, Complexity of Interactions, and Functions in Cancer of Multi-SAM Containing Proteins. Cancers (Basel) 2023; 15:3019. [PMID: 37296980 PMCID: PMC10252437 DOI: 10.3390/cancers15113019] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2023] [Revised: 05/25/2023] [Accepted: 05/30/2023] [Indexed: 06/12/2023] Open
Abstract
SAM domains are crucial mediators of diverse interactions, including those important for tumorigenesis or metastasis of cancers, and thus SAM domains can be attractive targets for developing cancer therapies. This review aims to explore the literature, especially on the recent findings of the structural dynamics, regulation, and functions of SAM domains in proteins containing more than one SAM (multi-SAM containing proteins, MSCPs). The topics here include how intrinsic disorder of some SAMs and an additional SAM domain in MSCPs increase the complexity of their interactions and oligomerization arrangements. Many similarities exist among these MSCPs, including their effects on cancer cell adhesion, migration, and metastasis. In addition, they are all involved in some types of receptor-mediated signaling and neurology-related functions or diseases, although the specific receptors and functions vary. This review also provides a simple outline of methods for studying protein domains, which may help non-structural biologists to reach out and build new collaborations to study their favorite protein domains/regions. Overall, this review aims to provide representative examples of various scenarios that may provide clues to better understand the roles of SAM domains and MSCPs in cancer in general.
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Affiliation(s)
- Christopher M. Clements
- Department of Dermatology, School of Medicine, University of Colorado Anschutz Medical Campus, Aurora, CO 80045, USA;
| | - Morkos A. Henen
- Department of Biochemistry and Molecular Genetics, School of Medicine, University of Colorado Anschutz Medical Campus, Aurora, CO 80045, USA; (M.A.H.); (B.V.)
| | - Beat Vögeli
- Department of Biochemistry and Molecular Genetics, School of Medicine, University of Colorado Anschutz Medical Campus, Aurora, CO 80045, USA; (M.A.H.); (B.V.)
| | - Yiqun G. Shellman
- Department of Dermatology, School of Medicine, University of Colorado Anschutz Medical Campus, Aurora, CO 80045, USA;
- Charles C. Gates Regenerative Medicine and Stem Cell Biology Institute, University of Colorado Anschutz Medical Campus, Aurora, CO 80045, USA
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Gao Y, Guan L, Jia R, Xiao W, Han Y, Li Y, Tang P, Yu Z, Zhang H. High expression of PPFIA1 in human esophageal squamous cell carcinoma correlates with tumor metastasis and poor prognosis. BMC Cancer 2023; 23:417. [PMID: 37158817 PMCID: PMC10169376 DOI: 10.1186/s12885-023-10872-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2022] [Accepted: 04/21/2023] [Indexed: 05/10/2023] Open
Abstract
BACKGROUND PTPRF interacting protein alpha 1 (PPFIA1) is reportedly related to the occurrence and progression of several kinds of malignancies. However, its role in esophageal squamous cell carcinoma (ESCC) is unclear. This current study investigated the prognostic significance and biological functions of PPFIA1 in ESCC. METHODS Oncomine, Gene Expression Profiling Interactive Analysis (GEPIA), and Gene Expression Omnibus (GEO) were used to investigate PPFIA1 expression in esophageal cancer. The relationship between PPFIA1 expression and clinicopathological characteristics and patient survival was evaluated in GSE53625 dataset, and verified in the cDNA array based on qRT-PCR and tissue microarray (TMA) dataset based on immunohistochemistry. The impact of PPFIA1 on the migration and invasion of cancer cells were investigated by wound-healing and transwell assays, respectively. RESULTS The expression of PPFIA1 was obviously increased in ESCC tissues versus adjacent esophageal tissues according to online database analyses (all P < 0.05). High PPFIA1 expression was closely related to several clinicopathological characteristics, including tumor location, histological grade, tumor invasion depth, lymph node metastasis, and tumor-node-metastasis (TNM) stage. High PPFIA1 expression was related to worse outcomes and was identified as an independent prognostic factor of overall survival in ESCC patients (GSE53625 dataset, P = 0.019; cDNA array dataset, P < 0.001; TMA dataset, P = 0.039). Downregulation of PPFIA1 expression can significantly reduce the migration and invasion ability of ESCC cells. CONCLUSION PPFIA1 is related to the migration and invasion of ESCC cells, and can be used as a potential biomarker to evaluate the prognosis of ESCC patients.
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Affiliation(s)
- Yongyin Gao
- Tianjin Medical University Cancer Institute and Hospital, National Clinical Research Center for Cancer, Tianjin's Clinical Research Center for Cancer, Key Laboratory of Cancer Prevention and Therapy of Tianjin, Tianjin, 300060, China
| | - Lizhao Guan
- Department of Biochemistry and Molecular Biology, School of Basic Medical Sciences, Tianjin Medical University, Tianjin, 300070, China
| | - Ran Jia
- National Cancer Center, National Clinical Research Center for Cancer, Cancer Hospital & Shenzhen Hospital, Chinese Academy of Medical Sciences and PeKing Union Medical College, Shenzhen, 518116, China
| | - Wanyi Xiao
- Tianjin Medical University Cancer Institute and Hospital, National Clinical Research Center for Cancer, Tianjin's Clinical Research Center for Cancer, Key Laboratory of Cancer Prevention and Therapy of Tianjin, Tianjin, 300060, China
| | - Youming Han
- Binhai Hospital of Tianjin Medical University General Hospital, Tianjin, 300456, China
| | - Yue Li
- Tianjin Medical University Cancer Institute and Hospital, National Clinical Research Center for Cancer, Tianjin's Clinical Research Center for Cancer, Key Laboratory of Cancer Prevention and Therapy of Tianjin, Tianjin, 300060, China
| | - Peng Tang
- Tianjin Medical University Cancer Institute and Hospital, National Clinical Research Center for Cancer, Tianjin's Clinical Research Center for Cancer, Key Laboratory of Cancer Prevention and Therapy of Tianjin, Tianjin, 300060, China.
| | - Zhentao Yu
- National Cancer Center, National Clinical Research Center for Cancer, Cancer Hospital & Shenzhen Hospital, Chinese Academy of Medical Sciences and PeKing Union Medical College, Shenzhen, 518116, China.
| | - Hongdian Zhang
- Tianjin Medical University Cancer Institute and Hospital, National Clinical Research Center for Cancer, Tianjin's Clinical Research Center for Cancer, Key Laboratory of Cancer Prevention and Therapy of Tianjin, Tianjin, 300060, China.
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Bason C, Barbieri A, Martinelli N, Olivieri B, Argentino G, Bartoloni E, Beri R, Jadav G, Puccetti A, Tinazzi E, Lunardi C. Identification of a Novel Serological Marker in Seronegative Rheumatoid Arthritis Using the Peptide Library Approach. Front Immunol 2021; 12:753400. [PMID: 34675934 PMCID: PMC8525329 DOI: 10.3389/fimmu.2021.753400] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2021] [Accepted: 09/17/2021] [Indexed: 11/16/2022] Open
Abstract
Rheumatoid arthritis (RA) is a systemic autoimmune disease characterized by chronic inflammation mainly affecting the joints leading to cartilage and bone destruction. The definition of seropositive or seronegative RA is based on the presence or absence of rheumatoid factor (RF) and anti-citrullinated peptide antibodies (ACPAs). Other autoantibodies have been identified in the last decade such as antibodies directed against carbamylated antigens, peptidyl-arginine deiminase type 4 and v-Raf murine sarcoma viral oncogene homologue B. In order to identify relevant autoantigens, we screened a random peptide library (RPL) with pooled IgGs obtained from 50 patients with seronegative RA. Patients’ sera were then used in an ELISA test to identify the most frequently recognized peptide among those obtained by screening the RPL. Sera from age- and sex-matched healthy subjects were used as controls. We identified a specific peptide (RA-peptide) recognized by RA patients’ sera, but not by healthy subjects or by patients with other immune-mediated diseases. The majority of sera from seronegative and seropositive RA patients (73.8% and 63.6% respectively) contained IgG antibodies directed against the RA-peptide. Interestingly, this peptide shares homology with some self-antigens, such as Protein-tyrosine kinase 2 beta, B cell scaffold protein, Liprin-alfa1 and Cytotoxic T lymphocyte protein 4. Affinity purified anti-RA-peptide antibodies were able to cross react with these autoantigens. In conclusion, we identified a peptide that is recognized by seropositive and, most importantly, by seronegative RA patients’ sera, but not by healthy subjects, conferring to this epitope a high degree of specificity. This peptide shares also homology with other autoantigens which can be recognized by autoantibodies present in seronegative RA sera. These newly identified autoantibodies, although present also in a percentage of seropositive RA patients, may be considered as novel serum biomarkers for seronegative RA, which lacks the presence of RF and/or ACPAs.
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Affiliation(s)
- Caterina Bason
- Department of Medicine, University of Verona, Verona, Italy
| | - Alessandro Barbieri
- Department of Laboratory Medicine, Boston Children's Hospital, Harvard Medical School, Boston, MA, United States
| | | | | | | | - Elena Bartoloni
- Division of Rheumatology, Department of Medicine, University of Perugia, Perugia, Italy
| | - Ruggero Beri
- Department of Medicine, University of Verona, Verona, Italy
| | | | - Antonio Puccetti
- Department of Experimental Medicine, Section of Histology, University of Genova, Genova, Italy
| | - Elisa Tinazzi
- Department of Medicine, University of Verona, Verona, Italy
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Liprins in oncogenic signaling and cancer cell adhesion. Oncogene 2021; 40:6406-6416. [PMID: 34654889 PMCID: PMC8602034 DOI: 10.1038/s41388-021-02048-1] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2021] [Revised: 09/21/2021] [Accepted: 09/28/2021] [Indexed: 12/30/2022]
Abstract
Liprins are a multifunctional family of scaffold proteins, identified by their involvement in several important neuronal functions related to signaling and organization of synaptic structures. More recently, the knowledge on the liprin family has expanded from neuronal functions to processes relevant to cancer progression, including cell adhesion, cell motility, cancer cell invasion, and signaling. These proteins consist of regions, which by prediction are intrinsically disordered, and may be involved in the assembly of supramolecular structures relevant for their functions. This review summarizes the current understanding of the functions of liprins in different cellular processes, with special emphasis on liprins in tumor progression. The available data indicate that liprins may be potential biomarkers for cancer progression and may have therapeutic importance.
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Shatnawi A, Abu Rabe DI, Frigo DE. Roles of the tumor suppressor inhibitor of growth family member 4 (ING4) in cancer. Adv Cancer Res 2021; 152:225-262. [PMID: 34353439 DOI: 10.1016/bs.acr.2021.05.004] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Inhibitor of growth family member 4 (ING4) is best known as a tumor suppressor that is frequently downregulated, deleted, or mutated in many cancers. ING4 regulates a broad array of tumor-related processes including proliferation, apoptosis, migration, autophagy, invasion, angiogenesis, DNA repair and chromatin remodeling. ING4 alters local chromatin structure by functioning as an epigenetic reader of H3K4 trimethylation histone marks (H3K4Me3) and regulating gene transcription through directing histone acetyltransferase (HAT) and histone deacetylase (HDAC) protein complexes. ING4 may serve as a useful prognostic biomarker for many cancer types and help guide treatment decisions. This review provides an overview of ING4's central functions in gene expression and summarizes current literature on the role of ING4 in cancer and its possible use in therapy.
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Affiliation(s)
- Aymen Shatnawi
- Department of Pharmaceutical and Administrative Sciences, University of Charleston School of Pharmacy, Charleston, WV, United States.
| | - Dina I Abu Rabe
- Integrated Bioscience Program, North Carolina Central University, Durham, NC, United States
| | - Daniel E Frigo
- Department of Cancer Systems Imaging, University of Texas MD Anderson Cancer Center, Houston, TX, United States; Department of Genitourinary Medical Oncology, University of Texas MD Anderson Cancer Center, Houston, TX, United States
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Filippou A, Pehkonen H, Karhemo PR, Väänänen J, Nieminen AI, Klefström J, Grénman R, Mäkitie AA, Joensuu H, Monni O. ANO1 Expression Orchestrates p27Kip1/MCL1-Mediated Signaling in Head and Neck Squamous Cell Carcinoma. Cancers (Basel) 2021; 13:cancers13051170. [PMID: 33803266 PMCID: PMC7967175 DOI: 10.3390/cancers13051170] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2021] [Revised: 03/01/2021] [Accepted: 03/05/2021] [Indexed: 12/24/2022] Open
Abstract
Simple Summary Our aim was to elucidate the molecular mechanisms of how ANO1 contributes to oncogenic processes in squamous cell carcinoma of the head and neck (HNSCC). We explored transcriptional programs influenced by ANO1 knockdown in patient-derived UT-SCC cell lines with 11q13 amplification and ANO1 overexpression. ANO1 depletion led to downregulation of broad pro-survival BCL2 family protein members, including MCL1, and simultaneously induced upregulation of the cell cycle inhibitor p27Kip1 and its redistribution from the cytoplasm into the nucleus in the studied HNSCC cells. Gene set enrichment analysis highlighted pathways associated with perturbed cell cycle and apoptosis in the ANO1-depleted samples. Silencing of ANO1 and application of an ANO1-targeting small-molecule inhibitor led to ANO1 degradation and reduction of cell viability. These findings suggest that ANO1 has drug target potential that deserves further evaluation in preclinical in vivo models. Abstract Head and neck squamous cell carcinoma (HNSCC) is a heterogeneous group of tumors that derive from the mucosal epithelium of the upper aerodigestive tract and present high mortality rate. Lack of efficient targeted-therapies and biomarkers towards patients’ stratification are caveats in the disease treatment. Anoctamin 1 (ANO1) gene is amplified in 30% of HNSCC cases. Evidence suggests involvement of ANO1 in proliferation, migration, and evasion of apoptosis; however, the exact mechanisms remain elusive. Aim of this study was to unravel the ANO1-dependent transcriptional programs and expand the existing knowledge of ANO1 contribution to oncogenesis and drug response in HNSCC. We cultured two HNSCC cell lines established from primary tumors harboring amplification and high expression of ANO1 in three-dimensional collagen. Differential expression analysis of ANO1-depleted HNSCC cells demonstrated downregulation of MCL1 and simultaneous upregulation of p27Kip1 expression. Suppressing ANO1 expression led to redistribution of p27Kip1 from the cytoplasm to the nucleus and associated with a cell cycle arrested phenotype. ANO1 silencing or pharmacological inhibition resulted in reduction of cell viability and ANO1 protein levels, as well as suppression of pro-survival BCL2 family proteins. Collectively, these data provide insights of ANO1 involvement in HNSCC carcinogenesis and support the rationale that ANO1 is an actionable drug target.
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Affiliation(s)
- Artemis Filippou
- Applied Tumor Genomics Research Program, Faculty of Medicine, University of Helsinki, 00014 Helsinki, Finland; (A.F.); (H.P.); (P.-R.K.); (J.V.)
| | - Henna Pehkonen
- Applied Tumor Genomics Research Program, Faculty of Medicine, University of Helsinki, 00014 Helsinki, Finland; (A.F.); (H.P.); (P.-R.K.); (J.V.)
| | - Piia-Riitta Karhemo
- Applied Tumor Genomics Research Program, Faculty of Medicine, University of Helsinki, 00014 Helsinki, Finland; (A.F.); (H.P.); (P.-R.K.); (J.V.)
| | - Juho Väänänen
- Applied Tumor Genomics Research Program, Faculty of Medicine, University of Helsinki, 00014 Helsinki, Finland; (A.F.); (H.P.); (P.-R.K.); (J.V.)
| | - Anni I. Nieminen
- Translational Cancer Medicine Research Program and Medicum, Faculty of Medicine, University of Helsinki, 00014 Helsinki, Finland;
| | - Juha Klefström
- Finnish Cancer Institute, FICAN South Helsinki University Hospital, Faculty of Medicine, University of Helsinki, 00014 Helsinki, Finland;
| | - Reidar Grénman
- Department of Otorhinolaryngology-Head and Neck Surgery, University of Turku and Turku University Hospital, 20520 Turku, Finland;
| | - Antti A. Mäkitie
- Department of Otorhinolaryngology-Head and Neck Surgery, University of Helsinki and Helsinki University Hospital, 00130 Helsinki, Finland;
- Research Program in Systems Oncology, Faculty of Medicine, University of Helsinki, 00014 Helsinki, Finland
| | - Heikki Joensuu
- Department of Oncology, University of Helsinki and Helsinki University Hospital, 00290 Helsinki, Finland;
| | - Outi Monni
- Applied Tumor Genomics Research Program, Faculty of Medicine, University of Helsinki, 00014 Helsinki, Finland; (A.F.); (H.P.); (P.-R.K.); (J.V.)
- Department of Oncology, Clinicum, Faculty of Medicine, University of Helsinki, 00014 Helsinki, Finland
- Correspondence: ; Tel.: +358-407639302
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Alfarsi LH, El Ansari R, Craze ML, Masisi BK, Ellis IO, Rakha EA, Green AR. PPFIA1 expression associates with poor response to endocrine treatment in luminal breast cancer. BMC Cancer 2020; 20:425. [PMID: 32410585 PMCID: PMC7227113 DOI: 10.1186/s12885-020-06939-6] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2020] [Accepted: 05/07/2020] [Indexed: 12/11/2022] Open
Abstract
BACKGROUND PPFIA1 is an important regulator of cell migration and invasion, regulating focal adhesion signalling and disassembly. PPFIA1 is frequently amplified in breast cancer, and recent functional studies indicate that PPFIA1 is an important promoter of migration and invasion in breast cancer. This study aims to evaluate the utility of PPFIA1 expression in the luminal breast cancer as a prognostic marker to predict the response to endocrine therapy. METHODS Large, well-characterised cohorts of primary luminal breast cancer patients with long-term follow-up was assessed for the clinical impact of PPFIA1 expression at the transcriptomic and proteomic levels. Prognostic significance of PPFIA1 and its relationship with clinical outcome and benefit of endocrine therapy were analysed. In addition, its association with other related-genes was analysed. RESULTS There was significant association between PPFIA1 expression and a member of the liprin family that involves in cell invasion (PPFIBPI), and the cell cycle regulator (CCND1), whereas a negative association was observed with the tumour suppressor gene (CD82). Patients with high PPFIA1 expression were associated with high risk of recurrence, distant metastasis and death from breast cancer (P < 0.05). Importantly, high PPFIA1 expression predicted relapse in a subset of patients who were subject to endocrine treatment alone, and was an independent prognostic marker of unfavourable outcome in these patients (P < 0.05). CONCLUSIONS These findings support the proposed role for PPFIA1 as a regulator of cell migration in breast cancer and provides definitive evidence for the clinical utility of PPFIA1 expression in patients with luminal breast cancer. Most importantly, our data suggests that PPFIA1 might be a potential predictive marker for poor benefit from endocrine therapy.
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Affiliation(s)
- Lutfi H Alfarsi
- Nottingham Breast Cancer Research Centre, Division of Cancer and Stem Cells, School of Medicine, University of Nottingham Biodiscovery Institute, University Park, Nottingham, NG7 2RD, UK
| | - Rokaya El Ansari
- Nottingham Breast Cancer Research Centre, Division of Cancer and Stem Cells, School of Medicine, University of Nottingham Biodiscovery Institute, University Park, Nottingham, NG7 2RD, UK
| | - Madeleine L Craze
- Nottingham Breast Cancer Research Centre, Division of Cancer and Stem Cells, School of Medicine, University of Nottingham Biodiscovery Institute, University Park, Nottingham, NG7 2RD, UK
| | - Brendah K Masisi
- Nottingham Breast Cancer Research Centre, Division of Cancer and Stem Cells, School of Medicine, University of Nottingham Biodiscovery Institute, University Park, Nottingham, NG7 2RD, UK
| | - Ian O Ellis
- Nottingham Breast Cancer Research Centre, Division of Cancer and Stem Cells, School of Medicine, University of Nottingham Biodiscovery Institute, University Park, Nottingham, NG7 2RD, UK.,Cellular Pathology, Nottingham University Hospitals NHS Trust, Hucknall Road, Nottingham, NG5 1PB, UK
| | - Emad A Rakha
- Nottingham Breast Cancer Research Centre, Division of Cancer and Stem Cells, School of Medicine, University of Nottingham Biodiscovery Institute, University Park, Nottingham, NG7 2RD, UK.,Cellular Pathology, Nottingham University Hospitals NHS Trust, Hucknall Road, Nottingham, NG5 1PB, UK
| | - Andrew R Green
- Nottingham Breast Cancer Research Centre, Division of Cancer and Stem Cells, School of Medicine, University of Nottingham Biodiscovery Institute, University Park, Nottingham, NG7 2RD, UK.
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Brown J, Stepien AJ, Willem P. Landscape of copy number aberrations in esophageal squamous cell carcinoma from a high endemic region of South Africa. BMC Cancer 2020; 20:281. [PMID: 32252688 PMCID: PMC7137242 DOI: 10.1186/s12885-020-06788-3] [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: 10/09/2019] [Accepted: 03/26/2020] [Indexed: 02/08/2023] Open
Abstract
Background Esophageal squamous cell carcinoma (ESCC) is an aggressive cancer with one of the highest world incidences in the Eastern Cape region of South Africa. Several genome wide studies have been performed on ESCC cohorts from Asian countries, North America, Malawi and other parts of the world but none have been conducted on ESCC tumors from South Africa to date, where the molecular pathology and etiology of this disease remains unclear. We report here tumor associated copy number changes observed in 51 ESCC patients’ samples from the Eastern Cape province of South Africa. Methods We extracted tumor DNA from 51 archived ESCC specimens and interrogated tumor associated DNA copy number changes using Affymetrix® 500 K SNP array technology. The Genomic Identification of Significant Targets in Cancer (GISTIC 2.0) algorithm was applied to identify significant focal regions of gains and losses. Gains of the top recurrent cancer genes were validated by fluorescence in situ hybridization and their protein expression assessed by immunohistochemistry. Results Twenty-three significant focal gains were identified across samples. Gains involving the CCND1, MYC, EGFR and JAG1 loci recapitulated those described in studies on Asian and Malawian cohorts. The two most significant gains involved the chromosomal sub-bands 3q28, encompassing the TPRG1 gene and 11q13.3 including the CTTN, PPFIA1and SHANK2 genes. There was no significant homozygous loss and the most recurrent hemizygous deletion involved the B3GAT1 gene on chromosome 11q25. Focal gains on 11q13.3 in 37% of cases (19/51), consistently involved CTTN and SHANK2 genes. Twelve of these cases (23,5%), had a broader region of gain that also included the CCND1, FGF19, FGF4 and FGF3 genes. SHANK2 and CTTN are co-amplified in several cancers, these proteins interact functionally together and are involved in cell motility. Immunohistochemistry confirmed both Shank2 (79%) and cortactin (69%) protein overexpression in samples with gains of these genes. In contrast, cyclin D1 (65%) was moderately expressed in samples with CCND1 DNA gain. Conclusions This study reports copy number changes in a South African ESCC cohort and highlights similarities and differences with cohorts from Asia and Malawi. Our results strongly suggest a role for CTTN and SHANK2 in the pathogenesis of ESCC in South Africa.
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Affiliation(s)
- Jacqueline Brown
- School of Pathology, Department of Molecular Medicine and Haematology, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg and the National Health Laboratory Services, Johannesburg, South Africa.
| | - Andrzej J Stepien
- Department of Anatomical Pathology, School of Medicine, Faculty of Health Science, Walter Sisulu University, National Health Laboratory Services/NMAH, Mthatha, South Africa
| | - Pascale Willem
- School of Pathology, Department of Molecular Medicine and Haematology, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg and the National Health Laboratory Services, Johannesburg, South Africa
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11
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Duan X, Gan J, Peng DY, Bao Q, Xiao L, Wei L, Wu J. Identification and functional analysis of microRNAs in rats following focal cerebral ischemia injury. Mol Med Rep 2019; 19:4175-4184. [PMID: 30896823 PMCID: PMC6471137 DOI: 10.3892/mmr.2019.10073] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2018] [Accepted: 02/22/2019] [Indexed: 01/08/2023] Open
Abstract
MicroRNA sequencing (miRNA‑seq) was performed in the present study to investigate miRNA expression profiles in infarcted brain areas following focal cerebral ischemia induced by middle cerebral artery occlusion in rats. In total, 20 miRNAs were identified to be upregulated and 17 to be downregulated in the infarct area. The expression levels of six differentially expressed miRNAs (DEmiRs), miR‑211‑5p, miR‑183‑5p, miR‑10b‑3p, miR‑182, miR‑217‑5p and miR‑96‑5p, were examined by reverse transcription‑quantitative polymerase chain reaction. Subsequently, a miRNA‑mRNA network was constructed. Gene Ontology and Kyoto Encyclopedia of Genes and Genomes analyses were performed to investigate the functions of the mRNAs targeted by these DEmiRs. The present study aimed to investigate the association between miRNAs and cerebral ischemia to provide potential insight into the molecular mechanisms underlying ischemic stroke.
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Affiliation(s)
- Xianchun Duan
- School of Pharmacy, Anhui University of Chinese Medicine, Hefei, Anhui 230012, P.R. China
| | - Jianghua Gan
- School of Pharmacy, Anhui University of Chinese Medicine, Hefei, Anhui 230012, P.R. China
| | - Dai-Yin Peng
- School of Pharmacy, Anhui University of Chinese Medicine, Hefei, Anhui 230012, P.R. China
| | - Qiuyu Bao
- School of Pharmacy, China Pharmaceutical University, Nanjing, Jiangsu 211198, P.R. China
| | - Ling Xiao
- School of Pharmacy, China Pharmaceutical University, Nanjing, Jiangsu 211198, P.R. China
| | - Liangbing Wei
- School of Pharmacy, Anhui University of Chinese Medicine, Hefei, Anhui 230012, P.R. China
| | - Jian Wu
- School of Pharmacy, Anhui University of Chinese Medicine, Hefei, Anhui 230012, P.R. China
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12
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Zhou H, Cao T, Li WP, Wu G. Combined expression and prognostic significance of PPFIA1 and ALG3 in head and neck squamous cell carcinoma. Mol Biol Rep 2019; 46:2693-2701. [PMID: 30805892 DOI: 10.1007/s11033-019-04712-y] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2018] [Accepted: 02/20/2019] [Indexed: 01/19/2023]
Abstract
PPFIA family members and ALG3 play important roles in tumorigenesis and tumor progression. However, the exact roles of distinct PPFIA family members and ALG3 in head and neck squamous cell carcinoma (HNSCC) remain unclear. We studied the mRNA expressions of PPFIA family members and ALG3 in a variety of tumor types compared with the normal controls using the Oncomine database along with meta-analyses of their expressions in HNSCC cancer cell line. The mRNA expressions of PPFIA family members and ALG3 in laryngeal squamous cell carcinoma cell line and normal laryngeal cell line were detected by quantitative real-time polymerase chain reaction. Based on the cBioportal database, we further studied mRNA expression alterations and co-occurrence relationships of the PPFIA family members and ALG3 in HNSCC. The relationship between PPFIA1 and ALG3 mRNA expression alterations and prognoses in patients with HNSCC was explored. We found that PPFIA1 and ALG3 were distinctively overexpressed at the mRNA level in HNSCC tissues compared with normal tissues, they had a significant co-occurrence relationship, their mRNA expressions were significantly higher than other PPFIA family members in laryngeal squamous cell carcinoma cell line, and their mRNA expressions were also significantly higher in laryngeal carcinoma cell line than in normal laryngeal cell line. Patients without both PPFIA1 and ALG3 mRNA expression alterations had better overall survival and disease/progression-free survival compared with patients with both PPFIA1 and ALG3 alterations. Based on these findings, PPFIA1 and ALG3 may play roles in oncogene expression in HNSCC. Their combined overexpression is significantly associated with poor survival outcomes. The relationship between them and the mechanism of action in head and neck cancers deserve further investigation.
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Affiliation(s)
- Hong Zhou
- Department of Otorhinolaryngology Head and Neck Surgery, Shanghai Pudong Hospital, Fudan University Pudong Medical Center, Shanghai, 201399, China
| | - Ting Cao
- Center for Medical Research and Innovation, Shanghai Pudong Hospital, Fudan University Pudong Medical Center, Shanghai, 201399, China
| | - Wen Ping Li
- Department of Otorhinolaryngology Head and Neck Surgery, Shanghai Pudong Hospital, Fudan University Pudong Medical Center, Shanghai, 201399, China
| | - Gang Wu
- Department of Otorhinolaryngology Head and Neck Surgery, Shanghai Pudong Hospital, Fudan University Pudong Medical Center, Shanghai, 201399, China.
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13
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Kahue CN, Jerrell RJ, Parekh A. Expression of human papillomavirus oncoproteins E6 and E7 inhibits invadopodia activity but promotes cell migration in HPV-positive head and neck squamous cell carcinoma cells. Cancer Rep (Hoboken) 2018; 1:e1125. [PMID: 32721084 PMCID: PMC7941430 DOI: 10.1002/cnr2.1125] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2018] [Revised: 06/19/2018] [Accepted: 06/19/2018] [Indexed: 12/30/2022] Open
Abstract
Background The rapid increase in the incidence of head and neck squamous cell carcinoma (HNSCC) is caused by high‐risk human papillomavirus (HPV) infections. The HPV oncogenes E6 and E7 promote carcinogenesis by disrupting signaling pathways that control survival and proliferation. Although these cancers are often diagnosed with metastases, the mechanisms that regulate their dissemination are unknown. Aims The aim of this study was to determine whether the HPV‐16 E6 and E7 oncogenes affected the invasive and migratory properties of HNSCC cells which promote their spread and metastasis. Methods and results Invasiveness was determined using invadopodia assays which allow for quantitation of extracellular matrix (ECM) degradation by invadopodia which are proteolytic membrane protrusions that facilitate invasion. Using cell lines and genetic manipulations, we found that HPV inhibited invadopodia activity in aggressive cell lines which was mediated by the E6 and E7 oncogenes. Given these findings, we also tested whether HPV caused differences in the migratory ability of HNSCC cells using Transwell assays. In contrast to our invadopodia results, we found no correlation between HPV status and cell migration; however, blocking the expression of the E6 and E7 oncoproteins in a HPV‐positive (HPV+) HNSCC cell line resulted in decreased migration. Conclusions Our data suggest that the E6 and E7 oncoproteins are negative regulators of invadopodia activity but may promote migration in HPV+ HNSCC cells. Despite the need for ECM proteolysis to penetrate most tissues, the unique structure of the head and neck tissues in which these cancers arise may facilitate the spread of migratory cancer cells without significant proteolytic ability.
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Affiliation(s)
- Charissa N Kahue
- Department of Otolaryngology, Vanderbilt University Medical Center, Nashville, TN, USA
| | - Rachel J Jerrell
- Department of Otolaryngology, Vanderbilt University Medical Center, Nashville, TN, USA
| | - Aron Parekh
- Department of Otolaryngology, Vanderbilt University Medical Center, Nashville, TN, USA.,Vanderbilt-Ingram Cancer Center, Vanderbilt University Medical Center, Nashville, TN, USA.,Department of Biomedical Engineering, Vanderbilt University, Nashville, TN, USA
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Liprin-α1 modulates cancer cell signaling by transmembrane protein CD82 in adhesive membrane domains linked to cytoskeleton. Cell Commun Signal 2018; 16:41. [PMID: 30005669 PMCID: PMC6045882 DOI: 10.1186/s12964-018-0253-y] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2018] [Accepted: 07/10/2018] [Indexed: 12/26/2022] Open
Abstract
Background PPFIA1 is located at the 11q13 region commonly amplified in cancer. The protein liprin-α1 encoded by PPF1A1 contributes to the adhesive and invasive structures of cytoskeletal elements and is located at the invadosomes in cancer cells. However, the precise mechanism of liprin-α1 function in cancer progression has remained elusive. Methods Invasion regulating activity of liprin-α1 was examined by analyzing the functions of squamous cell carcinoma of head and neck (HNSCC) cell lines in three-dimensional collagen I after RNAi mediated gene knockdown. Transcriptome profiling and Gene Set Enrichment Analysis from HNSCC and breast cancer cells were used to identify expression changes relevant to specific cellular localizations, biological processes and signaling pathways after PPFIA1 knockdown. The significance of the results was assessed by relevant statistical methods (Wald and Benjamini-Hochberg). Localization of proteins associated to liprin-α1 was studied by immunofluorescence in 2D and 3D conditions. The association of PPFIA1 amplification to HNSCC patient survival was explored using The Cancer Genome Atlas data. Results In this study, we show that liprin-α1 regulates biological processes related to membrane microdomains in breast carcinoma, as well as protein trafficking, cell-cell and cell-substrate contacts in HNSCC cell lines cultured in three-dimensional matrix. Importantly, we show that in all these cancer cells liprin-α1 knockdown leads to the upregulation of transmembrane protein CD82, which is a suppressor of metastasis in several solid tumors. Conclusions Our results provide novel information regarding the function of liprin-α1 in biological processes essential in cancer progression. The results reveal liprin-α1 as a novel regulator of CD82, linking liprin-α1 to the cancer cell invasion and metastasis pathways. Electronic supplementary material The online version of this article (10.1186/s12964-018-0253-y) contains supplementary material, which is available to authorized users.
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15
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Maturi V, Morén A, Enroth S, Heldin CH, Moustakas A. Genomewide binding of transcription factor Snail1 in triple-negative breast cancer cells. Mol Oncol 2018; 12:1153-1174. [PMID: 29729076 PMCID: PMC6026864 DOI: 10.1002/1878-0261.12317] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2017] [Revised: 03/28/2018] [Accepted: 04/15/2018] [Indexed: 12/15/2022] Open
Abstract
Transcriptional regulation mediated by the zinc finger protein Snail1 controls early embryogenesis. By binding to the epithelial tumor suppressor CDH1 gene, Snail1 initiates the epithelial–mesenchymal transition (EMT). The EMT generates stem‐like cells and promotes invasiveness during cancer progression. Accordingly, Snail1 mRNA and protein is abundantly expressed in triple‐negative breast cancers with enhanced metastatic potential and phenotypic signs of the EMT. Such high endogenous Snail1 protein levels permit quantitative chromatin immunoprecipitation‐sequencing (ChIP‐seq) analysis. Snail1 associated with 185 genes at cis regulatory regions in the Hs578T triple‐negative breast cancer cell model. These genes include morphogenetic regulators and signaling components that control polarized differentiation. Using the CRISPR/Cas9 system in Hs578T cells, a double deletion of 10 bp each was engineered into the first exon and into the second exon–intron junction of Snail1, suppressing Snail1 expression and causing misregulation of several hundred genes. Specific attention to regulators of chromatin organization provides a possible link to new phenotypes uncovered by the Snail1 loss‐of‐function mutation. On the other hand, genetic inactivation of Snail1 was not sufficient to establish a full epithelial transition to these tumor cells. Thus, Snail1 contributes to the malignant phenotype of breast cancer cells via diverse new mechanisms.
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Affiliation(s)
- Varun Maturi
- Department of Medical Biochemistry and Microbiology, Science for Life Laboratory, Ludwig Institute for Cancer Research, Uppsala University, Sweden
| | - Anita Morén
- Department of Medical Biochemistry and Microbiology, Science for Life Laboratory, Ludwig Institute for Cancer Research, Uppsala University, Sweden
| | - Stefan Enroth
- Department of Immunology, Genetics and Pathology, Science for Life Laboratory, Uppsala University, Sweden
| | - Carl-Henrik Heldin
- Department of Medical Biochemistry and Microbiology, Science for Life Laboratory, Ludwig Institute for Cancer Research, Uppsala University, Sweden
| | - Aristidis Moustakas
- Department of Medical Biochemistry and Microbiology, Science for Life Laboratory, Ludwig Institute for Cancer Research, Uppsala University, Sweden
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16
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Sala K, Raimondi A, Tonoli D, Tacchetti C, de Curtis I. Identification of a membrane-less compartment regulating invadosome function and motility. Sci Rep 2018; 8:1164. [PMID: 29348417 PMCID: PMC5773524 DOI: 10.1038/s41598-018-19447-2] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2017] [Accepted: 12/27/2017] [Indexed: 02/07/2023] Open
Abstract
Depletion of liprin-α1, ERC1 or LL5 scaffolds inhibits extracellular matrix degradation by invasive cells. These proteins co-accumulate near invadosomes in NIH-Src cells, identifying a novel invadosome–associated compartment distinct from the core and adhesion ring of invadosomes. Depletion of either protein perturbs the organization of invadosomes without influencing the recruitment of MT1-MMP metalloprotease. Liprin-α1 is not required for de novo formation of invadosomes after their disassembly by microtubules and Src inhibitors, while its depletion inhibits invadosome motility, thus affecting matrix degradation. Fluorescence recovery after photobleaching shows that the invadosome–associated compartment is dynamic, while correlative light immunoelectron microscopy identifies bona fide membrane–free invadosome–associated regions enriched in liprin-α1, which is virtually excluded from the invadosome core. The results indicate that liprin-α1, LL5 and ERC1 define a novel dynamic membrane-less compartment that regulates matrix degradation by affecting invadosome motility.
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Affiliation(s)
- Kristyna Sala
- Cell Adhesion Unit - Division of Neuroscience, IRCSS San Raffaele Scientific Institute, 20132, Milano, Italy
| | - Andrea Raimondi
- Experimental Imaging Center, IRCSS San Raffaele Scientific Institute, 20132, Milano, Italy
| | - Diletta Tonoli
- Cell Adhesion Unit - Division of Neuroscience, IRCSS San Raffaele Scientific Institute, 20132, Milano, Italy
| | - Carlo Tacchetti
- Experimental Imaging Center, IRCSS San Raffaele Scientific Institute, 20132, Milano, Italy.,San Raffaele Vita-Salute University, via Olgettina 58, 20132, Milano, Italy
| | - Ivan de Curtis
- Cell Adhesion Unit - Division of Neuroscience, IRCSS San Raffaele Scientific Institute, 20132, Milano, Italy. .,San Raffaele Vita-Salute University, via Olgettina 58, 20132, Milano, Italy.
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17
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Yang J, Wu NN, Huang DJ, Luo YC, Huang JZ, He HY, Lu HL, Song WL. PPFIA1 is upregulated in liver metastasis of breast cancer and is a potential poor prognostic indicator of metastatic relapse. Tumour Biol 2017; 39:1010428317713492. [PMID: 28720060 DOI: 10.1177/1010428317713492] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Although the oncogenic role of PPFIA1 (liprin-α1) in breast cancer has been reported, whether its dysregulation is associated with metastasis risk or survival outcomes in breast cancer patients is not clear. Our primary data showed that PPFIA1 expression was significantly higher in liver metastatic breast tumors than in the primary tumors. Then, we tried to pool previous annotated genomic data to assess the prognostic value of PPFIA1 in distant metastasis-free survival, the risk of metastatic relapse, and metastatic relapse-free survival in breast cancer patients by data mining in two large databases, Kaplan-Meier plotter and bc-GenExMiner 4.0. Results from Kaplan-Meier plotter showed that although high PPFIA1 expression was generally associated with decreased distant metastasis-free survival in estrogen receptor+ patients, subgroup analysis only confirmed significant association in estrogen receptor+/N- (nodal negative) group (median survival, high PPFIA1 group vs low PPFIA1 cohort: 191.21 vs 236.22 months; hazard ratio: 2.23, 95% confidence interval: 1.42-3.5, p < 0.001), but not in estrogen receptor+/N+ (nodal positive) group (hazard ratio: 1.63, 95% confidence interval: 0.88-3.03, p = 0.12). In estrogen receptor- patients, there was no association between PPFIA1 expression and distant metastasis-free survival, no matter in Nm (nodal status mixed), N-, or N+ subgroups. In bc-GenExMiner 4.0, Nottingham Prognostic Index- and Adjuvant! Online-adjusted analysis validated the independent prognostic value of PPFIA1 in metastatic risks in estrogen receptor+/N- patients. Based on these findings, we infer that high PPFIA1 expression might be an independent prognostic indicator of increased metastatic relapse risk in patients with estrogen receptor+/N- breast cancer, but not in estrogen receptor+/N+ or estrogen receptor- patients.
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Affiliation(s)
- Jing Yang
- 1 Department of Interventional Radiology, The Second Affiliated Hospital of Harbin Medical University, Harbin, China
| | - Ning-Ni Wu
- 2 Department of Medical Oncology, Yijishan Hospital of Wannan Medical College, Wuhu, China
| | - De-Jia Huang
- 3 Department of Interventional Radiology, Affiliated Tumor Hospital of Guangxi Medical University, Nanning, China
| | - Yao-Chang Luo
- 4 Department of Interventional Radiology, The First Affiliated Hospital of Guangxi University of Chinese Medicine, Nanning, China
| | - Jun-Zhen Huang
- 4 Department of Interventional Radiology, The First Affiliated Hospital of Guangxi University of Chinese Medicine, Nanning, China
| | - Hai-Yuan He
- 4 Department of Interventional Radiology, The First Affiliated Hospital of Guangxi University of Chinese Medicine, Nanning, China
| | - Hai-Lin Lu
- 4 Department of Interventional Radiology, The First Affiliated Hospital of Guangxi University of Chinese Medicine, Nanning, China
| | - Wen-Ling Song
- 4 Department of Interventional Radiology, The First Affiliated Hospital of Guangxi University of Chinese Medicine, Nanning, China
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