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Dugina V, Vasileva M, Khromova N, Vinokurova S, Shagieva G, Mikheeva E, Galembikova A, Dunaev P, Kudlay D, Boichuk S, Kopnin P. Imbalance between Actin Isoforms Contributes to Tumour Progression in Taxol-Resistant Triple-Negative Breast Cancer Cells. Int J Mol Sci 2024; 25:4530. [PMID: 38674115 PMCID: PMC11049934 DOI: 10.3390/ijms25084530] [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: 03/26/2024] [Revised: 04/15/2024] [Accepted: 04/18/2024] [Indexed: 04/28/2024] Open
Abstract
The widespread occurrence of breast cancer and its propensity to develop drug resistance highlight the need for a comprehensive understanding of the molecular mechanisms involved. This study investigates the intricate pathways associated with secondary resistance to taxol in triple-negative breast cancer (TNBC) cells, with a particular focus on the changes observed in the cytoplasmic actin isoforms. By studying a taxol-resistant TNBC cell line, we revealed a shift between actin isoforms towards γ-actin predominance, accompanied by increased motility and invasive properties. This was associated with altered tubulin isotype expression and reorganisation of the microtubule system. In addition, we have shown that taxol-resistant TNBC cells underwent epithelial-to-mesenchymal transition (EMT), as evidenced by Twist1-mediated downregulation of E-cadherin expression and increased nuclear translocation of β-catenin. The RNA profiling analysis revealed that taxol-resistant cells exhibited significantly increased positive regulation of cell migration, hormone response, cell-substrate adhesion, and actin filament-based processes compared with naïve TNBC cells. Notably, taxol-resistant cells exhibited a reduced proliferation rate, which was associated with an increased invasiveness in vitro and in vivo, revealing a complex interplay between proliferative and metastatic potential. This study suggests that prolonged exposure to taxol and acquisition of taxol resistance may lead to pro-metastatic changes in the TNBC cell line.
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Affiliation(s)
- Vera Dugina
- A.N. Belozersky Institute of Physico-Chemical Biology, Lomonosov Moscow State University, Moscow 119991, Russia; (V.D.); (G.S.)
- Biological Faculty, M.V. Lomonosov Moscow State University, Moscow 119991, Russia
| | - Maria Vasileva
- Scientific Research Institute of Carcinogenesis, N. N. Blokhin National Medical Research Center of Oncology, Moscow 115522, Russia; (M.V.); (N.K.); (S.V.)
| | - Natalia Khromova
- Scientific Research Institute of Carcinogenesis, N. N. Blokhin National Medical Research Center of Oncology, Moscow 115522, Russia; (M.V.); (N.K.); (S.V.)
| | - Svetlana Vinokurova
- Scientific Research Institute of Carcinogenesis, N. N. Blokhin National Medical Research Center of Oncology, Moscow 115522, Russia; (M.V.); (N.K.); (S.V.)
| | - Galina Shagieva
- A.N. Belozersky Institute of Physico-Chemical Biology, Lomonosov Moscow State University, Moscow 119991, Russia; (V.D.); (G.S.)
| | - Ekaterina Mikheeva
- Department of Pathology, Kazan State Medical University, Kazan 420012, Russia; (E.M.); (A.G.); (P.D.); (S.B.)
| | - Aigul Galembikova
- Department of Pathology, Kazan State Medical University, Kazan 420012, Russia; (E.M.); (A.G.); (P.D.); (S.B.)
| | - Pavel Dunaev
- Department of Pathology, Kazan State Medical University, Kazan 420012, Russia; (E.M.); (A.G.); (P.D.); (S.B.)
| | - Dmitry Kudlay
- Department of Pharmacology, The I. M. Sechenov First Moscow State Medical University (The Sechenov University), Moscow 119991, Russia;
- Department of Pharmacognosy and Industrial Pharmacy, Lomonosov Moscow State University, Moscow 119992, Russia
| | - Sergei Boichuk
- Department of Pathology, Kazan State Medical University, Kazan 420012, Russia; (E.M.); (A.G.); (P.D.); (S.B.)
- Department of Radiotherapy and Radiology, Russian Medical Academy of Continuous Professional Education, Moscow 119454, Russia
- “Biomarker” Research Laboratory, Institute of Fundamental Medicine and Biology, Kazan Federal University, Kazan 420008, Russia
| | - Pavel Kopnin
- Scientific Research Institute of Carcinogenesis, N. N. Blokhin National Medical Research Center of Oncology, Moscow 115522, Russia; (M.V.); (N.K.); (S.V.)
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Dugina VB, Shagieva GS, Kopnin PB. Cytoplasmic Beta and Gamma Actin Isoforms Reorganization and Regulation in Tumor Cells in Culture and Tissue. Front Pharmacol 2022; 13:895703. [PMID: 35721191 PMCID: PMC9204531 DOI: 10.3389/fphar.2022.895703] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2022] [Accepted: 05/11/2022] [Indexed: 11/26/2022] Open
Abstract
The cytoplasmic actin isoforms (β- and γ-actins) contribute greatly to cellular processes such as cel-cell and cell-matrix interactions, as well as cell polarization, motility and division. Distinct isoforms modulations are linked to serious pathologies, so investigations of underlying mechanisms would be of major relevance not only for fundamental research but also for clinical applications. Therefore, the study of the relevant mechanisms of change in the isoform’s balance is important for basic research and for clinical studies. The disruption of actin cytoskeleton and intercellular adhesions contribute to the neoplastic transformation, as it is important for the tumor growth, invasiveness and metastasis. Cytoplasmic actins display the functional diversity: β-actin is responsible for contractility, whereas γ-actin participates in the submembrane flexible cortex organization and direction cell motility. The involvement of β- and γ-actin in cell architecture, motility, division, and adhesion junctions in normal cells is not equivalent, and the major question was following: whether isoform ratio and the distribution in the cell corresponds to pathological function. Significant data were obtained in the study of tumor and normal cells in culture, as well as on clinical material of human tissues, and via selective regulation of β- and γ-actin’s expression. Investigation of the actins’ diversity and function in cancers may help to choose the benefit treatment strategies, and to design new therapies.
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Affiliation(s)
- V. B. Dugina
- A.N. Belozerskiy Research Institute of Physico-Chemical Biology, M.V. Lomonosov Moscow State University, Moscow, Russia
- Biological Faculty, M.V. Lomonosov Moscow State University, Moscow, Russia
| | - G. S. Shagieva
- A.N. Belozerskiy Research Institute of Physico-Chemical Biology, M.V. Lomonosov Moscow State University, Moscow, Russia
| | - P. B. Kopnin
- Research Institute of Carcinogenesis, N.N. Blokhin Russian Cancer Research Center, Ministry of Health of Russia, Moscow, Russia
- *Correspondence: P. B. Kopnin,
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