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El-Gamal R, Elfarrash S, El-Nablaway M, Salem AA, Zaraei SO, Anbar HS, Shoma A, El-Gamal MI. Anti-proliferative activity of RIHMS-Qi-23 against MCF-7 breast cancer cell line is through inhibition of cell proliferation and senescence but not inhibition of targeted kinases. BMC Cancer 2023; 23:1053. [PMID: 37919708 PMCID: PMC10621201 DOI: 10.1186/s12885-023-11547-1] [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] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2023] [Accepted: 10/18/2023] [Indexed: 11/04/2023] Open
Abstract
BACKGROUND Breast cancer is the most common malignancy globally, and is considered a major cause of cancer-related death. Tremendous effort is exerted to identify an optimal anticancer drug with limited side effects. The quinoline derivative RIMHS-Qi-23 had a wide-spectrum antiproliferative activity against various types of cancer cells. METHODS In the current study, the effect of RIMHS-Qi-23 was tested on MCF-7 breast cancer cell line to evaluate its anticancer efficacy in comparison to the reference compound doxorubicin. RESULTS Our data suggest an anti-proliferative effect of RIMHS-Qi-23 on the MCF-7 cell line with superior potency and selectivity compared to doxorubicin. Our mechanistic study suggested that the anti-proliferative effect of RIMHS-Qi-23 against MCF-7 cell line is not through targeted kinase inhibition but through other molecular machinery targeting cell proliferation and senescence such as cyclophlin A, p62, and LC3. CONCLUSION RIMHS-Qi-23 is exerting an anti-proliferative effect that is more potent and selective than doxorubicin.
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Affiliation(s)
- Randa El-Gamal
- Department of Medical Biochemistry & Molecular Biology, Faculty of Medicine, Mansoura University, Mansoura, 35516, Egypt.
- Medical Experimental Research Center (MERC), Faculty of Medicine, Mansoura University, Mansoura, 35516, Egypt.
- Department of Medical Biochemistry, Faculty of Medicine, Horus University, New Damietta, Egypt.
- Department of Medical Biochemistry, Faculty of Medicine, University of Mansoura, Mansoura, Al-Daqahlia Governorate, 35516, Arab Republic of Egypt.
| | - Sara Elfarrash
- Medical Experimental Research Center (MERC), Faculty of Medicine, Mansoura University, Mansoura, 35516, Egypt
- Department of Medical Physiology, Faculty of Medicine, Mansoura University, Mansoura, 35516, Egypt
| | - Mohammad El-Nablaway
- Department of Medical Biochemistry & Molecular Biology, Faculty of Medicine, Mansoura University, Mansoura, 35516, Egypt
- Department of Basic Medical Sciences, College of Medicine, AlMaarefa University, PO Box 71666, Riydah, 11597, Kingdom of Saudi Arabia
| | - Asmaa Ahmed Salem
- Department of Clinical Oncology and Nuclear Medicine, Faculty of Medicine, Mansoura University, Mansoura, Egypt
| | - Seyed-Omar Zaraei
- Research Institute of Medical and Health Sciences, University of Sharjah, Sharjah, 27272, United Arab Emirates
| | - Hanan S Anbar
- Department of Clinical Pharmacy and Pharmacotherapeutics, Dubai Pharmacy College for Girls, Dubai, 19099, United Arab Emirates
| | - Ashraf Shoma
- Department of General Surgery, Mansoura Faculty of Medicine, Mansoura University Hospital, Mansoura, 35516, Egypt
| | - Mohammed I El-Gamal
- Department of Medical Biochemistry, Faculty of Medicine, University of Mansoura, Mansoura, Al-Daqahlia Governorate, 35516, Arab Republic of Egypt.
- Research Institute of Medical and Health Sciences, University of Sharjah, Sharjah, 27272, United Arab Emirates.
- Department of Medicinal Chemistry, College of Pharmacy, University of Sharjah, Sharjah, 27272, United Arab Emirates.
- Department of Medicinal Chemistry, Faculty of Pharmacy, Mansoura University, Mansoura, 35516, Egypt.
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Elfarrash S, Jensen NM, Ferreira N, Schmidt SI, Gregersen E, Vestergaard MV, Nabavi S, Meyer M, Jensen PH. Polo-like kinase 2 inhibition reduces serine-129 phosphorylation of physiological nuclear alpha-synuclein but not of the aggregated alpha-synuclein. PLoS One 2021; 16:e0252635. [PMID: 34613964 PMCID: PMC8494365 DOI: 10.1371/journal.pone.0252635] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2021] [Accepted: 09/19/2021] [Indexed: 11/18/2022] Open
Abstract
Accumulation of aggregated alpha-synuclein (α-syn) is believed to play a pivotal role in the pathophysiology of Parkinson's disease (PD) and other synucleinopathies. As a key constituent of Lewy pathology, more than 90% of α-syn in Lewy bodies is phosphorylated at serine-129 (pS129) and hence, it is used extensively as a marker for α-syn pathology. However, the exact role of pS129 remains controversial and the kinase(s) responsible for the phosphorylation have yet to be determined. In this study, we investigated the effect of Polo-like kinase 2 (PLK2) inhibition on formation of pS129 using an ex vivo organotypic brain slice model of synucleinopathy. Our data demonstrated that PLK2 inhibition has no effect on α-syn aggregation, pS129 or inter-neuronal spreading of the aggregated α-syn seen in the organotypic slices. Instead, PLK2 inhibition reduced the soluble pS129 level in the nuclei. The same finding was replicated in an in vivo mouse model of templated α-syn aggregation and in human dopaminergic neurons, suggesting that PLK2 is more likely to be involved in S129-phosphorylation of the soluble physiological fraction of α-syn. We also demonstrated that reduction of nuclear pS129 following PLK2 inhibition for a short time before sample collection improves the signal-to-noise ratio when quantifying pS129 aggregate pathology.
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Affiliation(s)
- Sara Elfarrash
- Danish Research Institute of Translational Neuroscience–DANDRITE, Aarhus University, Aarhus, Denmark
- Department of Biomedicine, Aarhus University, Aarhus, Denmark
- Department of Physiology, Faculty of Medicine, Mansoura University, Mansoura, Egypt
- MERC–Medical Experimental Research Center, Faculty of Medicine, Mansoura University, Mansoura, Egypt
- * E-mail: (SE); (PHJ)
| | - Nanna Møller Jensen
- Danish Research Institute of Translational Neuroscience–DANDRITE, Aarhus University, Aarhus, Denmark
- Department of Biomedicine, Aarhus University, Aarhus, Denmark
| | - Nelson Ferreira
- Danish Research Institute of Translational Neuroscience–DANDRITE, Aarhus University, Aarhus, Denmark
- Department of Biomedicine, Aarhus University, Aarhus, Denmark
| | - Sissel Ida Schmidt
- Department of Neurobiology Research, Institute of Molecular Medicine, University of Southern Denmark, Odense, Denmark
| | - Emil Gregersen
- Danish Research Institute of Translational Neuroscience–DANDRITE, Aarhus University, Aarhus, Denmark
- Department of Biomedicine, Aarhus University, Aarhus, Denmark
| | - Marie Vibeke Vestergaard
- Danish Research Institute of Translational Neuroscience–DANDRITE, Aarhus University, Aarhus, Denmark
- Department of Biomedicine, Aarhus University, Aarhus, Denmark
| | - Sadegh Nabavi
- Danish Research Institute of Translational Neuroscience–DANDRITE, Aarhus University, Aarhus, Denmark
- Department of Molecular Biology and Genetics, Aarhus University, Aarhus, Denmark
| | - Morten Meyer
- Department of Neurobiology Research, Institute of Molecular Medicine, University of Southern Denmark, Odense, Denmark
- Department of Neurology, Odense University Hospital, Odense, Denmark
- Department of Clinical Research, BRIDGE–Brain Research Inter-Disciplinary Guided Excellence, University of Southern Denmark, Odense, Denmark
| | - Poul Henning Jensen
- Danish Research Institute of Translational Neuroscience–DANDRITE, Aarhus University, Aarhus, Denmark
- Department of Biomedicine, Aarhus University, Aarhus, Denmark
- * E-mail: (SE); (PHJ)
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Affiliation(s)
- Sara Elfarrash
- Department of Physiology, Faculty of Medicine, Mansoura University, Mansoura, Egypt
| | - Poul Henning Jensen
- DANDRITE-Danish Research Institute of Translational Neuroscience and Department of Biomedicine, Aarhus University, Aarhus, Denmark
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Elfarrash S, Jensen NM, Ferreira N, Betzer C, Thevathasan JV, Diekmann R, Adel M, Omar NM, Boraie MZ, Gad S, Ries J, Kirik D, Nabavi S, Jensen PH. Organotypic slice culture model demonstrates inter-neuronal spreading of alpha-synuclein aggregates. Acta Neuropathol Commun 2019; 7:213. [PMID: 31856920 PMCID: PMC6924077 DOI: 10.1186/s40478-019-0865-5] [Citation(s) in RCA: 38] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2019] [Accepted: 12/08/2019] [Indexed: 02/07/2023] Open
Abstract
Here we describe the use of an organotypic hippocampal slice model for studying α-synuclein aggregation and inter-neuronal spreading initiated by microinjection of pre-formed α-synuclein fibrils (PFFs). PFF injection at dentate gyrus (DG) templates the formation of endogenous α-synuclein aggregates in axons and cell bodies of this region that spread to CA3 and CA1 regions. Aggregates are insoluble and phosphorylated at serine-129, recapitulating Lewy pathology features found in Parkinson’s disease and other synucleinopathies. The model was found to favor anterograde spreading of the aggregates. Furthermore, it allowed development of slices expressing only serine-129 phosphorylation-deficient human α-synuclein (S129G) using an adeno-associated viral (AAV) vector in α-synuclein knockout slices. The processes of aggregation and spreading of α-synuclein were thereby shown to be independent of phosphorylation at serine-129. We provide methods and highlight crucial steps for PFF microinjection and characterization of aggregate formation and spreading. Slices derived from genetically engineered mice or manipulated using viral vectors allow testing of hypotheses on mechanisms involved in the formation of α-synuclein aggregates and their prion-like spreading.
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