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Castañeda-Sánchez CY, Chimal-Vega B, León-Gutiérrez R, Araiza-Robles AE, Serafín-Higuera N, Pulido-Capiz A, Rivero IA, Díaz-Molina R, Alatorre-Meda M, Rodríguez-Velázquez E, García-González V. Low-Density Lipoproteins Increase Proliferation, Invasion, and Chemoresistance via an Exosome Autocrine Mechanism in MDA-MB-231 Chemoresistant Cells. Biomedicines 2024; 12:742. [PMID: 38672098 PMCID: PMC11048396 DOI: 10.3390/biomedicines12040742] [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: 12/23/2023] [Revised: 03/01/2024] [Accepted: 03/07/2024] [Indexed: 04/28/2024] Open
Abstract
Dyslipidemias involving high concentrations of low-density lipoproteins (LDLs) increase the risk of developing triple-negative breast cancer (TNBC), wherein cholesterol metabolism and protein translation initiation mechanisms have been linked with chemoresistance. Doxorubicin (Dox) treatment, a member of the anthracycline family, represents a typical therapeutic strategy; however, chemoresistance remains a significant challenge. Exosomes (Exs) secreted by tumoral cells have been implicated in cell communication pathways and chemoresistance mechanisms; the content of exosomes is an outcome of cellular cholesterol metabolism. We previously induced Dox resistance in TNBC cell models, characterizing a variant denominated as variant B cells. Our results suggest that LDL internalization in parental and chemoresistant variant B cells is associated with increased cell proliferation, migration, invasion, and spheroid growth. We identified the role of eIF4F translation initiation factor and the down-regulation of tumor suppressor gene PDCD4, an inhibitor of eIF4A, in chemoresistant variant B cells. In addition, the exomes secreted by variant B cells were characterized by the protein content, electronic microscopy, and cell internalization assays. Critically, exosomes purified from LDL-treated variant B cell promoted cell proliferation, migration, and an increment in lactate concentration. Our results suggest that an autocrine phenomenon induced by exosomes in chemoresistant cells may induce modifications on signaling mechanisms of the p53/Mdm2 axis and activation of p70 ribosomal protein kinase S6. Moreover, the specific down-regulated profile of chaperones Hsp90 and Hsp70 secretion inside the exosomes of the chemoresistant variant could be associated with this phenomenon. Therefore, autocrine activation mediated by exosomes and the effect of LDL internalization may influence changes in exosome chaperone content and modulate proliferative signaling pathways, increasing the aggressiveness of MDA-MB-231 chemoresistant cells.
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Affiliation(s)
- César Y. Castañeda-Sánchez
- Departamento de Bioquímica, Facultad de Medicina Mexicali, Universidad Autónoma de Baja California, Mexicali 21000, Mexico; (C.Y.C.-S.); (B.C.-V.); (R.L.-G.); (A.E.A.-R.); (A.P.-C.); (R.D.-M.)
- Laboratorio Multidisciplinario de Estudios Metabólicos y Cáncer, Universidad Autónoma de Baja California, Mexicali 21000, Mexico
| | - Brenda Chimal-Vega
- Departamento de Bioquímica, Facultad de Medicina Mexicali, Universidad Autónoma de Baja California, Mexicali 21000, Mexico; (C.Y.C.-S.); (B.C.-V.); (R.L.-G.); (A.E.A.-R.); (A.P.-C.); (R.D.-M.)
- Laboratorio Multidisciplinario de Estudios Metabólicos y Cáncer, Universidad Autónoma de Baja California, Mexicali 21000, Mexico
| | - Roberto León-Gutiérrez
- Departamento de Bioquímica, Facultad de Medicina Mexicali, Universidad Autónoma de Baja California, Mexicali 21000, Mexico; (C.Y.C.-S.); (B.C.-V.); (R.L.-G.); (A.E.A.-R.); (A.P.-C.); (R.D.-M.)
- Laboratorio Multidisciplinario de Estudios Metabólicos y Cáncer, Universidad Autónoma de Baja California, Mexicali 21000, Mexico
| | - Adrián Ernesto Araiza-Robles
- Departamento de Bioquímica, Facultad de Medicina Mexicali, Universidad Autónoma de Baja California, Mexicali 21000, Mexico; (C.Y.C.-S.); (B.C.-V.); (R.L.-G.); (A.E.A.-R.); (A.P.-C.); (R.D.-M.)
- Laboratorio Multidisciplinario de Estudios Metabólicos y Cáncer, Universidad Autónoma de Baja California, Mexicali 21000, Mexico
| | - Nicolás Serafín-Higuera
- Facultad de Odontología Mexicali, Universidad Autónoma de Baja California, Mexicali 21000, Mexico;
| | - Angel Pulido-Capiz
- Departamento de Bioquímica, Facultad de Medicina Mexicali, Universidad Autónoma de Baja California, Mexicali 21000, Mexico; (C.Y.C.-S.); (B.C.-V.); (R.L.-G.); (A.E.A.-R.); (A.P.-C.); (R.D.-M.)
- Laboratorio Multidisciplinario de Estudios Metabólicos y Cáncer, Universidad Autónoma de Baja California, Mexicali 21000, Mexico
| | - Ignacio A. Rivero
- Centro de Graduados e Investigación en Química, Tecnológico Nacional de México, Instituto Tecnológico de Tijuana, Tijuana 22510, Mexico;
| | - Raúl Díaz-Molina
- Departamento de Bioquímica, Facultad de Medicina Mexicali, Universidad Autónoma de Baja California, Mexicali 21000, Mexico; (C.Y.C.-S.); (B.C.-V.); (R.L.-G.); (A.E.A.-R.); (A.P.-C.); (R.D.-M.)
- Laboratorio Multidisciplinario de Estudios Metabólicos y Cáncer, Universidad Autónoma de Baja California, Mexicali 21000, Mexico
| | - Manuel Alatorre-Meda
- Centro de Graduados e Investigación en Química-Grupo de Biomateriales y Nanomedicina, CONAHCYT-Tecnológico Nacional de México, Instituto Tecnológico de Tijuana, Tijuana 22510, Mexico;
| | - Eustolia Rodríguez-Velázquez
- Facultad de Odontología, Universidad Autónoma de Baja California, Tijuana 22390, Mexico;
- Centro de Graduados e Investigación en Química-Grupo de Biomateriales y Nanomedicina, Tecnológico Nacional de México, Instituto Tecnológico de Tijuana, Tijuana 22510, Mexico
| | - Victor García-González
- Departamento de Bioquímica, Facultad de Medicina Mexicali, Universidad Autónoma de Baja California, Mexicali 21000, Mexico; (C.Y.C.-S.); (B.C.-V.); (R.L.-G.); (A.E.A.-R.); (A.P.-C.); (R.D.-M.)
- Laboratorio Multidisciplinario de Estudios Metabólicos y Cáncer, Universidad Autónoma de Baja California, Mexicali 21000, Mexico
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Piwocka O, Musielak M, Ampuła K, Piotrowski I, Adamczyk B, Fundowicz M, Suchorska WM, Malicki J. Navigating challenges: optimising methods for primary cell culture isolation. Cancer Cell Int 2024; 24:28. [PMID: 38212739 PMCID: PMC10785493 DOI: 10.1186/s12935-023-03190-4] [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: 11/07/2023] [Accepted: 12/24/2023] [Indexed: 01/13/2024] Open
Abstract
Primary cell lines are invaluable for exploring cancer biology and investigating novel treatments. Despite their numerous advantages, primary cultures are laborious to obtain and maintain in culture. Hence, established cell lines are still more common. This study aimed to evaluate a range of techniques for isolating primary breast cancer cultures, employing distinct enzymatic compositions, incubation durations, and mechanical approaches, including filtration. Out of several protocols, we opted for a highly effective method (Method 5) that gave rise to a primary cell culture (BC160). This method combines mechanical disaggregation and enzymatic digestion with hyaluronidase and collagenase. Moreover, the paper addresses common issues in isolating primary cultures, shedding light on the struggle against fibroblasts overgrowing cancer cell populations. To make primary cell lines a preferred model, it is essential to elaborate and categorise isolation methods, develop approaches to separate heterogeneous cultures and investigate factors influencing the establishment of primary cell lines.
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Affiliation(s)
- Oliwia Piwocka
- Department of Electroradiology, Poznan University of Medical Sciences, Poznan, 61-701, Poland.
- Doctoral School, Poznan University of Medical Sciences, Poznan, 61-701, Poland.
- Radiobiology Laboratory, Department of Medical Physics, Greater Poland Cancer Centre, Poznan, 61- 866, Poland.
| | - Marika Musielak
- Department of Electroradiology, Poznan University of Medical Sciences, Poznan, 61-701, Poland
- Doctoral School, Poznan University of Medical Sciences, Poznan, 61-701, Poland
- Radiobiology Laboratory, Department of Medical Physics, Greater Poland Cancer Centre, Poznan, 61- 866, Poland
| | - Karolina Ampuła
- Faculty of Biology, Adam Mickiewicz University, Poznan, 61-614, Poland
| | - Igor Piotrowski
- Radiobiology Laboratory, Department of Medical Physics, Greater Poland Cancer Centre, Poznan, 61- 866, Poland
| | - Beata Adamczyk
- Breast Surgical Oncology Department, Greater Poland Cancer Centre, Poznan, 61-866, Poland
| | | | - Wiktoria Maria Suchorska
- Department of Electroradiology, Poznan University of Medical Sciences, Poznan, 61-701, Poland
- Radiobiology Laboratory, Department of Medical Physics, Greater Poland Cancer Centre, Poznan, 61- 866, Poland
| | - Julian Malicki
- Department of Electroradiology, Poznan University of Medical Sciences, Poznan, 61-701, Poland
- Medical Physics Department, Greater Poland Cancer Centre, Poznan, 61-866, Poland
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