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Ait Belkacem I, Mossadegh‐keller N, Bourgoin P, Arnoux I, Loosveld M, Morange P, Markarian T, Michelet P, Busnel JM, Roulland S, Galland F, Malergue F. Cell Analysis from Dried Blood Spots: New Opportunities in Immunology, Hematology, and Infectious Diseases. Adv Sci (Weinh) 2021; 8:e2100323. [PMID: 34278739 PMCID: PMC8456206 DOI: 10.1002/advs.202100323] [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] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/26/2021] [Revised: 05/03/2021] [Indexed: 05/04/2023]
Abstract
Blood cell analysis is a major pillar of biomedical research and healthcare. These analyses are performed in central laboratories. Rapid shipment from collection site to the central laboratories is currently needed because cells and biomarkers degrade rapidly. The dried blood spot from a fingerstick allows the preservation of cellular molecules for months but entire cells are never recovered. Here leucocyte elution is optimized from dried blood spots. Flow cytometry and mRNA expression profiling are used to analyze the recovered cells. 50-70% of the leucocytes that are dried on a polyester solid support via elution after shaking the support with buffer are recovered. While red blood cells lyse upon drying, it is found that the majority of leucocytes are preserved. Leucocytes have an altered structure that is improved by adding fixative in the elution buffer. Leucocytes are permeabilized, allowing an easy staining of all cellular compartments. Common immunophenotyping and mRNAs are preserved. The ability of a new biomarker (CD169) to discriminate between patients with and without Severe Acute Respiratory Syndrome induced by Coronavirus 2 (SARS-CoV-2) infections is also preserved. Leucocytes from blood can be dried, shipped, and/or stored for at least 1 month, then recovered for a wide variety of analyses, potentially facilitating biomedical applications worldwide.
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Affiliation(s)
- Ines Ait Belkacem
- Department of Research and DevelopmentBeckman Coulter Life Sciences‐Immunotech130 Avenue de Lattre de TassignyMarseille13009France
- Aix Marseille UniversitéCNRSINSERMCIMLCentre d'Immunologie de Marseille‐LuminyMarseille13009France
| | | | - Penelope Bourgoin
- Department of Research and DevelopmentBeckman Coulter Life Sciences‐Immunotech130 Avenue de Lattre de TassignyMarseille13009France
| | - Isabelle Arnoux
- Department of Hematology LaboratoryTimone University HospitalAPHM264 Rue Saint‐PierreMarseille13005France
| | - Marie Loosveld
- Department of Hematology LaboratoryTimone University HospitalAPHM264 Rue Saint‐PierreMarseille13005France
| | - Pierre‐emmanuel Morange
- Department of Hematology LaboratoryTimone University HospitalAPHM264 Rue Saint‐PierreMarseille13005France
- Aix Marseille UniversitéINSERMINRAEC2VN, 27 Boulevard Jean MoulinMarseille13385France
| | - Thibaut Markarian
- Department of Hematology LaboratoryTimone University HospitalAPHM264 Rue Saint‐PierreMarseille13005France
- Aix Marseille UniversitéINSERMINRAEC2VN, 27 Boulevard Jean MoulinMarseille13385France
| | - Pierre Michelet
- Aix Marseille UniversitéINSERMINRAEC2VN, 27 Boulevard Jean MoulinMarseille13385France
- Department of Emergency Medicine and Intensive CareTimone University HospitalAPHM264 Rue Saint PierreMarseille13005France
| | - Jean Marc Busnel
- Department of Research and DevelopmentBeckman Coulter Life Sciences‐Immunotech130 Avenue de Lattre de TassignyMarseille13009France
| | - Sandrine Roulland
- Aix Marseille UniversitéCNRSINSERMCIMLCentre d'Immunologie de Marseille‐LuminyMarseille13009France
| | - Franck Galland
- Aix Marseille UniversitéCNRSINSERMCIMLCentre d'Immunologie de Marseille‐LuminyMarseille13009France
| | - Fabrice Malergue
- Department of Research and DevelopmentBeckman Coulter Life Sciences‐Immunotech130 Avenue de Lattre de TassignyMarseille13009France
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Belkacem IA, Bourgoin P, Busnel JM, Galland F, Malergue F. One-step White Blood Cell Extracellular Staining Method for Flow Cytometry. Bio Protoc 2021; 11:e4135. [PMID: 34541052 PMCID: PMC8413609 DOI: 10.21769/bioprotoc.4135] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2021] [Revised: 05/19/2021] [Accepted: 05/26/2021] [Indexed: 11/02/2022] Open
Abstract
Flow cytometry is a powerful analytical technique that is increasingly used in scientific investigations and healthcare; however, it requires time-consuming, multi-step sample procedures, which limits its use to specialized laboratories. In this study, we propose a new universal one-step method in which white blood cell staining and red blood cell lysis are carried out in a single step, using a gentle lysis solution mixed with fluorescent antibody conjugates or probes in a dry or liquid format. The blood sample may be obtained from a routine venipuncture or directly from a fingerprick, allowing for near-patient analysis. This procedure enables the analysis of common white blood cell markers as well as markers related to infections or sepsis. This simpler and faster protocol may help to democratize the use of flow cytometry in the research and medical fields. Graphic abstract: One-step White Blood Cell Extracellular Staining Method for Flow Cytometry.
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Affiliation(s)
- Ines Ait Belkacem
- Aix Marseille University, Centre d'Immunologie de Marseille-Luminy, Marseille, France
- Department of Research and Development, Beckman Coulter Life Sciences-Immunotech, Marseille, France
| | - Pénélope Bourgoin
- Department of Research and Development, Beckman Coulter Life Sciences-Immunotech, Marseille, France
| | - Jean Marc Busnel
- Department of Research and Development, Beckman Coulter Life Sciences-Immunotech, Marseille, France
| | - Franck Galland
- Aix Marseille University, Centre d'Immunologie de Marseille-Luminy, Marseille, France
| | - Fabrice Malergue
- Department of Research and Development, Beckman Coulter Life Sciences-Immunotech, Marseille, France
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Sénéchal H, Keykhosravi S, Couderc R, Selva MA, Shahali Y, Aizawa T, Busnel JM, Arif R, Mercier I, Pham-Thi N, Charpin DA, Poncet P. Pollen/Fruit Syndrome: Clinical Relevance of the Cypress Pollen Allergenic Gibberellin-Regulated Protein. Allergy Asthma Immunol Res 2019; 11:143-151. [PMID: 30479084 PMCID: PMC6267187 DOI: 10.4168/aair.2019.11.1.143] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/12/2018] [Revised: 09/04/2018] [Accepted: 09/05/2018] [Indexed: 11/20/2022]
Abstract
A pollen/food-associated syndrome (PFAS) has been described between peach and cypress pollen. Cross-reactive allergens were characterized which belong to the Gibberellin-regulated protein (GRP) family, BP14 in cypress pollen and Pru p 7 in peach. GRP are small cationic protein with anti-microbial properties. A patient suffering from a peach/cypress syndrome was explored clinically and biologically using 2 types of immunoglobulin E (IgE) multiarray microchip, immunoblots and a basophil activation test to assess the clinical relevance of various extracts and purified allergens from fruits or cypress pollen. In addition to PR10 sensitization, the patient showed specific IgE to Pru p 7, BP14 and allergen from pomegranate. These last 3 allergens and allergenic sources are able to induce ex vivo basophil activation characterized by the monitoring of the expression of CD63 and CD203c, both cell surface markers correlated with a basophil mediator release. Up to 100% of cells expressed CD203c at 50 ng/mL of BP14 protein. In contrast, snakin-1, a GRP from potato sharing 82% sequence identity with Pru p 7 did not activate patient's basophils. These results strongly suggest that, like Pru p 7, BP14 is a clinically relevant allergenic GRP from pollen. Allergen members of this newly described protein family are good candidates for PFAS where no cross-reactive allergens have been characterized.
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Affiliation(s)
- Hélène Sénéchal
- Department of Biochemistry, Armand Trousseau Children Hospital, APHP, A&E Research Team, Paris, France
| | - Sanaz Keykhosravi
- Department of Biochemistry, Armand Trousseau Children Hospital, APHP, A&E Research Team, Paris, France.,Paris-Sud Analytical Chemistry Group, Paris-Sud University, Orsay, France
| | - Rémy Couderc
- Department of Biochemistry, Armand Trousseau Children Hospital, APHP, Paris, France
| | - Marie Ange Selva
- Department of Biochemistry, Armand Trousseau Children Hospital, APHP, Paris, France
| | - Youcef Shahali
- Razi Vaccine and Serum Research Institute, Agricultural Research, Education and Extension Organization, Karaj, Iran
| | - Tomoyasu Aizawa
- Global Institution for Collaborative Research and Education, Protein Science Laboratory, Hokkaïdo University, Sapporo, Japan
| | | | - Rihane Arif
- Beckman Coulter, Life Sciences Research, Marseille, France
| | - Inna Mercier
- Department of Allergology, Pasteur Institute Medical Center, Paris, France
| | - Nhan Pham-Thi
- Department of Allergology, Pasteur Institute Medical Center, Paris, France
| | - Denis André Charpin
- Department of Pneumonology and Allergy, La Timone Hospital, APHM, Aix-Marseille University, Marseille, France
| | - Pascal Poncet
- Department of Biochemistry, Armand Trousseau Children Hospital, APHP, A&E Research Team, Paris, France.,Pasteur Institute, Center of Resources and Technological Research, Paris, France.
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