1
|
Chen Q, Li S, Fu F, Huang Q, Zhang R. MAP7 drives EMT and cisplatin resistance in ovarian cancer via wnt/β-catenin signaling. Heliyon 2024; 10:e30409. [PMID: 38726137 PMCID: PMC11078642 DOI: 10.1016/j.heliyon.2024.e30409] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2024] [Revised: 04/24/2024] [Accepted: 04/25/2024] [Indexed: 05/12/2024] Open
Abstract
Methods Our approach encompasses analyzing MAP7's expression levels across various datasets and clinical specimens, evaluating its association with patient outcomes, and probing its influence on ovarian cancer cell dynamics such as proliferation, migration, invasion, and apoptosis. Results We have identified significant upregulation of MAP7 in ovarian cancer tissues, which correlates with advanced disease stages, higher pathological grades, and unfavorable prognoses. Functionally, the inhibition of MAP7 suppresses cancer cell proliferation, migration, and invasion while promoting apoptosis. Notably, the silencing of MAP7 attenuates the epithelial-mesenchymal transition (EMT) and disrupts Wnt/β-catenin pathway signaling-two critical processes implicated in metastasis and chemoresistance. In cisplatin-resistant A2780-DDP cells, the downregulation of MAP7 effectively reverses their resistance to cisplatin. Furthermore, the nuclear localization of MAP7 in these cells underscores its pivotal role in driving cisplatin resistance by modulating the transcriptional regulation and interaction dynamics of β-catenin. Conclusion Our findings position MAP7 as a pivotal element in ovarian cancer advancement and cisplatin resistance, primarily through its modulation of EMT and the Wnt/β-catenin pathway. Its association with poor clinical outcomes underscores its potential as both a prognostic marker and a therapeutic target. Strategies aimed at MAP7 could represent a new frontier in combating chemotherapy resistance in ovarian cancer, emphasizing its significance in crafting complementary treatments for this disease.
Collapse
Affiliation(s)
- Qingqing Chen
- The Third School of Clinical Medicine,Southern Medical University, Guangzhou, 510500, China
| | - Shaojing Li
- Shanghai Fengxian District Central Hospital, 6600 Nanfeng Road, Fengxian District, Shanghai, 201400, China
| | - Furong Fu
- Pingyang Hospital affiliated to Wenzhou Medical University, No.555, Kunao Road, Zhejiang Province, China
| | - Qunhuan Huang
- Shanghai Fengxian District Central Hospital, 6600 Nanfeng Road, Fengxian District, Shanghai, 201400, China
- Shanghai Municipal Hospital of Traditional Chinese Medicine, Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Rong Zhang
- The Third School of Clinical Medicine,Southern Medical University, Guangzhou, 510500, China
- Shanghai Fengxian District Central Hospital, 6600 Nanfeng Road, Fengxian District, Shanghai, 201400, China
| |
Collapse
|
2
|
Güllülü Ö, Mayer BE, Toplek FB. Linking Gene Fusions to Bone Marrow Failure and Malignant Transformation in Dyskeratosis Congenita. Int J Mol Sci 2024; 25:1606. [PMID: 38338888 PMCID: PMC10855549 DOI: 10.3390/ijms25031606] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2023] [Revised: 01/26/2024] [Accepted: 01/26/2024] [Indexed: 02/12/2024] Open
Abstract
Dyskeratosis Congenita (DC) is a multisystem disorder intrinsically associated with telomere dysfunction, leading to bone marrow failure (BMF). Although the pathology of DC is largely driven by mutations in telomere-associated genes, the implications of gene fusions, which emerge due to telomere-induced genomic instability, remain unexplored. We meticulously analyzed gene fusions in RNA-Seq data from DC patients to provide deeper insights into DC's progression. The most significant DC-specific gene fusions were subsequently put through in silico assessments to ascertain biophysical and structural attributes, including charge patterning, inherent disorder, and propensity for self-association. Selected candidates were then analyzed using deep learning-powered structural predictions and molecular dynamics simulations to gauge their potential for forming higher-order oligomers. Our exploration revealed that genes participating in fusion events play crucial roles in upholding genomic stability, facilitating hematopoiesis, and suppressing tumors. Notably, our analysis spotlighted a particularly disordered polyampholyte fusion protein that exhibits robust higher-order oligomerization dynamics. To conclude, this research underscores the potential significance of several high-confidence gene fusions in the progression of BMF in DC, particularly through the dysregulation of genomic stability, hematopoiesis, and tumor suppression. Additionally, we propose that these fusion proteins might hold a detrimental role, specifically in inducing proteotoxicity-driven hematopoietic disruptions.
Collapse
Affiliation(s)
- Ömer Güllülü
- Department of Structural Biology, St. Jude Children’s Research Hospital, Memphis, TN 38105, USA
| | - Benjamin E. Mayer
- Computational Biology & Simulation, Technische Universität Darmstadt, 64287 Darmstadt, Germany
| | - Fran Bačić Toplek
- Dipartimento di Bioscienze, Università degli Studi di Milano, 20133 Milano, Italy
| |
Collapse
|
3
|
Şen Ö, Emanet M, Mazzuferi M, Bartolucci M, Catalano F, Prato M, Moscato S, Marino A, De Pasquale D, Pugliese G, Bonaccorso F, Pellegrini V, Castillo AEDR, Petretto A, Ciofani G. Microglia Polarization and Antiglioma Effects Fostered by Dual Cell Membrane-Coated Doxorubicin-Loaded Hexagonal Boron Nitride Nanoflakes. ACS APPLIED MATERIALS & INTERFACES 2023; 15:58260-58273. [PMID: 38051559 PMCID: PMC10739601 DOI: 10.1021/acsami.3c17097] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/14/2023] [Revised: 11/17/2023] [Accepted: 11/17/2023] [Indexed: 12/07/2023]
Abstract
Microglial cells play a critical role in glioblastoma multiforme (GBM) progression, which is considered a highly malignant brain cancer. The activation of microglia can either promote or inhibit GBM growth depending on the stage of the tumor development and on the microenvironment conditions. The current treatments for GBM have limited efficacy; therefore, there is an urgent need to develop novel and efficient strategies for drug delivery and targeting: in this context, a promising strategy consists of using nanoplatforms. This study investigates the microglial response and the therapeutic efficacy of dual-cell membrane-coated and doxorubicin-loaded hexagonal boron nitride nanoflakes tested on human microglia and GBM cells. Obtained results show promising therapeutic effects on glioma cells and an M2 microglia polarization, which refers to a specific phenotype or activation state that is associated with anti-inflammatory and tissue repair functions, highlighted through proteomic analysis.
Collapse
Affiliation(s)
- Özlem Şen
- Smart
Bio-Interfaces, Istituto Italiano di Tecnologia, Viale Rinaldo Piaggio 34, Pontedera, Pisa 56025, Italy
| | - Melis Emanet
- Smart
Bio-Interfaces, Istituto Italiano di Tecnologia, Viale Rinaldo Piaggio 34, Pontedera, Pisa 56025, Italy
| | - Martina Mazzuferi
- Smart
Bio-Interfaces, Istituto Italiano di Tecnologia, Viale Rinaldo Piaggio 34, Pontedera, Pisa 56025, Italy
- Department
of Mechanical & Aerospace Engineering, Politecnico di Torino, Corso Duca degli Abruzzi 24, Torino 10129, Italy
| | - Martina Bartolucci
- Core
Facilities-Clinical Proteomics and Metabolomics, IRCCS Istituto Giannina Gaslini, Via Gerolamo Gaslini 5, Genova 16147, Italy
| | - Federico Catalano
- Electron
Microscopy Facility, Istituto Italiano di
Tecnologia, Via Morego 30, Genova 16163, Italy
| | - Mirko Prato
- Materials
Characterization Facility, Istituto Italiano
di Tecnologia, Via Morego 30, Genova 16163, Italy
| | - Stefania Moscato
- Department
of Clinical and Experimental Medicine, University
of Pisa, Via Roma 55, Pisa 56126, Italy
| | - Attilio Marino
- Smart
Bio-Interfaces, Istituto Italiano di Tecnologia, Viale Rinaldo Piaggio 34, Pontedera, Pisa 56025, Italy
| | - Daniele De Pasquale
- Smart
Bio-Interfaces, Istituto Italiano di Tecnologia, Viale Rinaldo Piaggio 34, Pontedera, Pisa 56025, Italy
| | - Giammarino Pugliese
- Nanochemistry, Istituto Italiano di Tecnologia, Via Morego 30, Genova 16163, Italy
| | - Francesco Bonaccorso
- BeDimensional
SPA, Lungotorrente Secca
30R, Genova 16163, Italy
- Graphene
Laboratories, Istituto Italiano di Tecnologia, Via Morego 30, Genova 16163, Italy
| | - Vittorio Pellegrini
- BeDimensional
SPA, Lungotorrente Secca
30R, Genova 16163, Italy
- Graphene
Laboratories, Istituto Italiano di Tecnologia, Via Morego 30, Genova 16163, Italy
| | | | - Andrea Petretto
- Core
Facilities-Clinical Proteomics and Metabolomics, IRCCS Istituto Giannina Gaslini, Via Gerolamo Gaslini 5, Genova 16147, Italy
| | - Gianni Ciofani
- Smart
Bio-Interfaces, Istituto Italiano di Tecnologia, Viale Rinaldo Piaggio 34, Pontedera, Pisa 56025, Italy
| |
Collapse
|
4
|
Ozgencil M, Dullovi A, Christiane Higos RC, Hořejší Z, Bellelli R. The linker histone H1-BRCA1 axis is a crucial mediator of replication fork stability. Life Sci Alliance 2023; 6:e202301933. [PMID: 37364916 PMCID: PMC10292663 DOI: 10.26508/lsa.202301933] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2023] [Revised: 06/13/2023] [Accepted: 06/13/2023] [Indexed: 06/28/2023] Open
Abstract
The maintenance of genome integrity relies on replication fork stabilization upon encountering endogenous and exogenous sources of DNA damage. How this process is coordinated with the local chromatin environment remains poorly defined. Here, we show that the replication-dependent histone H1 variants interact with the tumour suppressor BRCA1 in a replication stress-dependent manner. Transient loss of the replication-dependent histones H1 does not affect fork progression in unchallenged conditions but leads to the accumulation of stalled replication intermediates. Upon challenge with hydroxyurea, cells deficient for histone H1 variants fail to recruit BRCA1 to stalled replication forks and undergo MRE11-dependent fork resection and collapse, which ultimately leads to genomic instability and cell death. In summary, our work defines an essential role of the replication-dependent histone H1 variants in mediating BRCA1-dependent fork protection and genome stability.
Collapse
Affiliation(s)
- Meryem Ozgencil
- Centre for Cancer Cell and Molecular Biology, Barts Cancer Institute, Queen Mary University of London, London, UK
| | - Arlinda Dullovi
- Centre for Cancer Cell and Molecular Biology, Barts Cancer Institute, Queen Mary University of London, London, UK
| | | | - Zuzana Hořejší
- Centre for Cancer Cell and Molecular Biology, Barts Cancer Institute, Queen Mary University of London, London, UK
| | - Roberto Bellelli
- Centre for Cancer Cell and Molecular Biology, Barts Cancer Institute, Queen Mary University of London, London, UK
| |
Collapse
|