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Lima JA, Sorroche BP, Tostes K, Dias TC, de Carvalho Rodrigues N, Tansini A, da Silva Oliveira RJ, Arantes LMRB. Repurposing discarded leukodepletion filters as a source of mononuclear cells for advanced in vitro research. J Immunol Methods 2024; 530:113694. [PMID: 38797273 DOI: 10.1016/j.jim.2024.113694] [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: 01/11/2024] [Revised: 05/22/2024] [Accepted: 05/23/2024] [Indexed: 05/29/2024]
Abstract
In light of advancements in the field of immuno-oncology, the demand for obtaining mononuclear cells for in vitro assays has surged. However, obtaining these cells from healthy donors remains a challenging task due to difficulties in donor recruitment and the requirement for substantial blood volumes. Here, we present a protocol for isolating peripheral blood mononuclear cells (PBMCs) from leukodepletion filters used in whole blood and erythrocytes by apheresis donations at the Hemonucleus of the Barretos Cancer Hospital, Brazil. The method involves rinsing the leukodepletion filters and subsequent centrifugation using a Ficoll-Paque concentration gradient. The isolated PBMCs were analyzed by flow cytometry, which allowed the identification of various subpopulations, including CD4+ T lymphocytes (CD45+CD4+), CD8+ T lymphocytes (CD45+CD8+), B lymphocytes (CD45+CD20+CD19+), non-classical monocytes (CD45+CD64+CD14-), classical monocytes (CD45+CD64+CD14+), and granulocytes (CD45+CD15+CD14-). In our comparative analysis of filters, we observed a higher yield of PBMCs from whole blood filters than those obtained from erythrocytes through apheresis. Additionally, fresh samples exhibited superior viability when compared to cryopreserved ones. Given this, leukodepletion filters provide a practical and cost-effective means to isolate large quantities of pure PBMCs, making it a feasible source for obtaining mononuclear cells for in vitro experiments. SUMMARY: Here, we provide a detailed protocol for the isolation of mononuclear cells from leukodepletion filters, which are routinely discarded at the Barretos Cancer Hospital's Hemonucleus.
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Affiliation(s)
| | | | - Katiane Tostes
- Molecular Oncology Research Center, Barretos Cancer Hospital, Barretos, SP, Brazil
| | | | | | - Aline Tansini
- Molecular Diagnosis Laboratory, Barretos Cancer Hospital, Barretos, SP, Brazil
| | - Renato José da Silva Oliveira
- Molecular Oncology Research Center, Barretos Cancer Hospital, Barretos School of Health Sciences Dr. Paulo Prata-FACISB, Barretos, SP, Brazil
| | - Lidia Maria Rebolho Batista Arantes
- Molecular Oncology Research Center, Barretos Cancer Hospital, Antenor Duarte Vilela - 1301/1302, Doutor Paulo Prata, 14784400 Barretos, SP, Brazil.
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Patel J, Borucki R, Werth VP. An Update on the Pathogenesis of Cutaneous Lupus Erythematosus and Its Role in Clinical Practice. Curr Rheumatol Rep 2020; 22:69. [PMID: 32845411 DOI: 10.1007/s11926-020-00946-z] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
PURPOSE OF REVIEW Understanding the pathogenesis of cutaneous lupus erythematosus (CLE) is an important step in developing new medications and providing effective treatment to patients. This review focuses on novel research within CLE pathogenesis, as well as some of the medications being developed based on this knowledge. RECENT FINDINGS The subtle differences between systemic lupus erythematosus (SLE) and CLE pathogenesis are highlighted by differences in the circulating immune cells found in each disease, as well as the specific pathways activated by ultraviolet light. Plasmacytoid dendritic cells and the related type I interferon pathway are major components of CLE pathogenesis, and as such, therapies targeting components of this pathway have been successful in recent clinical trials. B cell-depleting therapies have shown success in SLE; however, their role in CLE is less clear. Understanding the differences between these manifestations of lupus allows for the development of therapies that are more effective in skin-specific disease. Discovering key pathways in CLE pathogenesis is critical for understanding the clinical features of the disease and ultimately developing new and effective therapies.
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Affiliation(s)
- Jay Patel
- Corporal Michael J. Crescenz VAMC, Philadelphia, PA, USA.,Department of Dermatology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, USA
| | - Robert Borucki
- Corporal Michael J. Crescenz VAMC, Philadelphia, PA, USA.,Department of Dermatology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, USA
| | - Victoria P Werth
- Corporal Michael J. Crescenz VAMC, Philadelphia, PA, USA. .,Department of Dermatology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, USA. .,Department of Dermatology, Perelman Center for Advanced Medicine, Suite 1-330A, 3400 Civic Center Boulevard, Philadelphia, PA, 19104, USA.
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Cicarini WB, Duarte RCF, Ferreira KS, Loures CDMG, Consoli RV, Neiva CLS, de Pádua PM, Nunes FFC, Alves LCV, Reis EA, Moreira CC, Guimarães TMPD, de Toledo VDPCP, Carvalho MDG. Impact of markers of endothelial injury and hypercoagulability on systemic lupus erythematosus. Lupus 2020; 29:182-190. [PMID: 31948350 DOI: 10.1177/0961203319899478] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
We have explored the relationship between possible hemostatic changes and clinical manifestation of the systemic lupus erythematosus (SLE) as a function of greater or lesser disease activity according to Systemic Lupus Erythematosus Disease Activity Index-2000 (SLEDAI-2K) criteria. Endothelial injury and hypercoagulability were investigated in patients with SLE by measuring thrombomodulin (TM), D-dimer (DDi) and thrombin generation (TG) potential. A total of 90 participants were distributed into three groups: 1) women with SLE presenting with low disease activity (laSLE) (SLEDAI-2K ≤ 4), 2) women with SLE presenting with moderate to high disease activity (mhaSLE) (SLEDAI-2K > 4), and 3) a control group comprising healthy women. Levels of TM and DDi were higher both in the laSLE and mhaSLE groups compared to controls and in mhaSLE compared to the laSLE group. With respect to TG assay, lagtime and endogen thrombin potential, low concentrations of tissue factor provided the best results for discrimination among groups. Analysis of these data allow us to conclude that TM, DDi and TG are potentially useful markers for discriminating patients with very active from those with lower active disease. Higher SLE activity may cause endothelial injury, resulting in higher TG and consequently a hypercoagulability state underlying the picture of thrombosis common in this inflammatory disease.
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Affiliation(s)
- W Batista Cicarini
- Department of Clinical and Toxicological Analysis, Faculty of Pharmacy, Federal University of Minas Gerais, Minas Gerais, Brazil
| | - R C Figueiredo Duarte
- Department of Clinical and Toxicological Analysis, Faculty of Pharmacy, Federal University of Minas Gerais, Minas Gerais, Brazil
| | - K Silvestre Ferreira
- Department of Clinical and Toxicological Analysis, Faculty of Pharmacy, Federal University of Minas Gerais, Minas Gerais, Brazil
| | - C de Mello Gomes Loures
- Department of Clinical and Toxicological Analysis, Faculty of Pharmacy, Federal University of Minas Gerais, Minas Gerais, Brazil
| | | | | | | | - F Freire Campos Nunes
- Department of Clinical and Toxicological Analysis, Faculty of Pharmacy, Federal University of Minas Gerais, Minas Gerais, Brazil
| | - L C Vieira Alves
- Department of Clinical and Toxicological Analysis, Faculty of Pharmacy, Federal University of Minas Gerais, Minas Gerais, Brazil
| | - E Afonso Reis
- Department of Statistics, Institute of Exact Sciences, Federal University of Minas Gerais, Minas Gerais, Brazil
| | - C Coelho Moreira
- Department of Statistics, Institute of Exact Sciences, Federal University of Minas Gerais, Minas Gerais, Brazil
| | - T M Pinto Dabés Guimarães
- Department of Clinical and Toxicological Analysis, Faculty of Pharmacy, Federal University of Minas Gerais, Minas Gerais, Brazil
| | | | - M das Graças Carvalho
- Department of Clinical and Toxicological Analysis, Faculty of Pharmacy, Federal University of Minas Gerais, Minas Gerais, Brazil
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Xiang Y, Guo J, Peng YF, Huang HT, Lan Y, Wei YS. Association study of CD154 polymorphisms and serum CD154 level with systemic lupus erythematous in Chinese population. Rheumatol Int 2017; 37:1287-1294. [DOI: 10.1007/s00296-017-3745-y] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2017] [Accepted: 05/17/2017] [Indexed: 10/19/2022]
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