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Mertens TF, Liebheit AT, Ehl J, Köhler R, Rakhymzhan A, Woehler A, Katthän L, Ebel G, Liublin W, Kasapi A, Triantafyllopoulou A, Schulz TJ, Niesner RA, Hauser AE. MarShie: a clearing protocol for 3D analysis of single cells throughout the bone marrow at subcellular resolution. Nat Commun 2024; 15:1764. [PMID: 38409121 PMCID: PMC10897183 DOI: 10.1038/s41467-024-45827-6] [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: 03/06/2023] [Accepted: 02/01/2024] [Indexed: 02/28/2024] Open
Abstract
Analyzing immune cell interactions in the bone marrow is vital for understanding hematopoiesis and bone homeostasis. Three-dimensional analysis of the complete, intact bone marrow within the cortex of whole long bones remains a challenge, especially at subcellular resolution. We present a method that stabilizes the marrow and provides subcellular resolution of fluorescent signals throughout the murine femur, enabling identification and spatial characterization of hematopoietic and stromal cell subsets. By combining a pre-processing algorithm for stripe artifact removal with a machine-learning approach, we demonstrate reliable cell segmentation down to the deepest bone marrow regions. This reveals age-related changes in the marrow. It highlights the interaction between CX3CR1+ cells and the vascular system in homeostasis, in contrast to other myeloid cell types, and reveals their spatial characteristics after injury. The broad applicability of this method will contribute to a better understanding of bone marrow biology.
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Affiliation(s)
- Till Fabian Mertens
- Department of Rheumatology and Clinical Immunology, Charité - Universitätsmedizin Berlin, corporate member of Freie Universität Berlin and Humboldt-Universität zu Berlin, 10117, Berlin, Germany
- Immune Dynamics, Deutsches Rheuma-Forschungszentrum (DRFZ), a Leibniz Institute, Charitéplatz 1, 10117, Berlin, Germany
| | - Alina Tabea Liebheit
- Department of Rheumatology and Clinical Immunology, Charité - Universitätsmedizin Berlin, corporate member of Freie Universität Berlin and Humboldt-Universität zu Berlin, 10117, Berlin, Germany
- Immune Dynamics, Deutsches Rheuma-Forschungszentrum (DRFZ), a Leibniz Institute, Charitéplatz 1, 10117, Berlin, Germany
- Institute of Chemistry and Biochemistry, Department of Biology, Chemistry and Pharmacy, Freie Universität Berlin, Berlin, Germany
| | - Johanna Ehl
- Department of Rheumatology and Clinical Immunology, Charité - Universitätsmedizin Berlin, corporate member of Freie Universität Berlin and Humboldt-Universität zu Berlin, 10117, Berlin, Germany
- Immune Dynamics, Deutsches Rheuma-Forschungszentrum (DRFZ), a Leibniz Institute, Charitéplatz 1, 10117, Berlin, Germany
| | - Ralf Köhler
- Immune Dynamics, Deutsches Rheuma-Forschungszentrum (DRFZ), a Leibniz Institute, Charitéplatz 1, 10117, Berlin, Germany
| | - Asylkhan Rakhymzhan
- Department of Rheumatology and Clinical Immunology, Charité - Universitätsmedizin Berlin, corporate member of Freie Universität Berlin and Humboldt-Universität zu Berlin, 10117, Berlin, Germany
- Biophysical Analytics, Deutsches Rheuma-Forschungszentrum (DRFZ), a Leibniz Institute, Charitéplatz 1, 10117, Berlin, Germany
| | - Andrew Woehler
- Berlin Institute for Medical Systems Biology, Max Delbrück Center for Molecular Medicine, 10115, Berlin, Germany
- Janelia Research Campus, Howard Hughes Medical Institute, Ashburn, VA, 20147, USA
| | - Lukas Katthän
- Miltenyi Biotec B.V. and Co. Bertha-von-Suttner-Straße 5, 37085, Göttingen, Germany
| | - Gernot Ebel
- Miltenyi Biotec B.V. and Co. Bertha-von-Suttner-Straße 5, 37085, Göttingen, Germany
| | - Wjatscheslaw Liublin
- Biophysical Analytics, Deutsches Rheuma-Forschungszentrum (DRFZ), a Leibniz Institute, Charitéplatz 1, 10117, Berlin, Germany
| | - Ana Kasapi
- Department of Rheumatology and Clinical Immunology, Charité - Universitätsmedizin Berlin, corporate member of Freie Universität Berlin and Humboldt-Universität zu Berlin, 10117, Berlin, Germany
- Innate Immunity in Rheumatic Diseases, Deutsches Rheuma-Forschungszentrum (DRFZ), a Leibniz Institute, Charitéplatz 1, 10117, Berlin, Germany
| | - Antigoni Triantafyllopoulou
- Department of Rheumatology and Clinical Immunology, Charité - Universitätsmedizin Berlin, corporate member of Freie Universität Berlin and Humboldt-Universität zu Berlin, 10117, Berlin, Germany
- Innate Immunity in Rheumatic Diseases, Deutsches Rheuma-Forschungszentrum (DRFZ), a Leibniz Institute, Charitéplatz 1, 10117, Berlin, Germany
| | - Tim Julius Schulz
- Department of Adipocyte Development and Nutrition, German Institute of Human Nutrition (DIfE) Potsdam-Rehbruecke, 14558, Nuthetal, Germany
- German Center for Diabetes Research (DZD), 85764, Munich-Neuherberg, Germany
| | - Raluca Aura Niesner
- Biophysical Analytics, Deutsches Rheuma-Forschungszentrum (DRFZ), a Leibniz Institute, Charitéplatz 1, 10117, Berlin, Germany
- Dynamic and Functional in vivo Imaging, Veterinary Medicine, Freie Universität Berlin, Berlin, Germany
| | - Anja Erika Hauser
- Department of Rheumatology and Clinical Immunology, Charité - Universitätsmedizin Berlin, corporate member of Freie Universität Berlin and Humboldt-Universität zu Berlin, 10117, Berlin, Germany.
- Immune Dynamics, Deutsches Rheuma-Forschungszentrum (DRFZ), a Leibniz Institute, Charitéplatz 1, 10117, Berlin, Germany.
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Hernández-Barrientos D, Pelayo R, Mayani H. The hematopoietic microenvironment: a network of niches for the development of all blood cell lineages. J Leukoc Biol 2023; 114:404-420. [PMID: 37386890 DOI: 10.1093/jleuko/qiad075] [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: 03/07/2023] [Revised: 05/25/2023] [Accepted: 06/15/2023] [Indexed: 07/01/2023] Open
Abstract
Blood cell formation (hematopoiesis) takes place mainly in the bone marrow, within the hematopoietic microenvironment, composed of a number of different cell types and their molecular products that together shape spatially organized and highly specialized microstructures called hematopoietic niches. From the earliest developmental stages and throughout the myeloid and lymphoid lineage differentiation pathways, hematopoietic niches play a crucial role in the preservation of cellular integrity and the regulation of proliferation and differentiation rates. Current evidence suggests that each blood cell lineage develops under specific, discrete niches that support committed progenitor and precursor cells and potentially cooperate with transcriptional programs determining the gradual lineage commitment and specification. This review aims to discuss recent advances on the cellular identity and structural organization of lymphoid, granulocytic, monocytic, megakaryocytic, and erythroid niches throughout the hematopoietic microenvironment and the mechanisms by which they interconnect and regulate viability, maintenance, maturation, and function of the developing blood cells.
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Affiliation(s)
- Daniel Hernández-Barrientos
- Hematopoietic Stem Cells Laboratory, Oncology Research Unit, Oncology Hospital, National Medical Center, IMSS, Av. Cuauhtemoc 330. Mexico City, 06720, Mexico
| | - Rosana Pelayo
- Onco-Immunology Laboratory, Eastern Biomedical Research Center, IMSS, Km 4.5 Atlixco-Metepec, 74360, Puebla, Mexico
| | - Hector Mayani
- Hematopoietic Stem Cells Laboratory, Oncology Research Unit, Oncology Hospital, National Medical Center, IMSS, Av. Cuauhtemoc 330. Mexico City, 06720, Mexico
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3
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Pirabe A, Frühwirth S, Brunnthaler L, Hackl H, Schmuckenschlager A, Schrottmaier WC, Assinger A. Age-Dependent Surface Receptor Expression Patterns in Immature Versus Mature Platelets in Mouse Models of Regenerative Thrombocytopenia. Cells 2023; 12:2419. [PMID: 37830633 PMCID: PMC10571991 DOI: 10.3390/cells12192419] [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: 09/15/2023] [Revised: 10/04/2023] [Accepted: 10/05/2023] [Indexed: 10/14/2023] Open
Abstract
Aging is a multifaceted process that unfolds at both the individual and cellular levels, resulting in changes in platelet count and platelet reactivity. These alterations are influenced by shifts in platelet production, as well as by various environmental factors that affect circulating platelets. Aging also triggers functional changes in platelets, including a reduction in RNA content and protein production capacity. Older individuals and RNA-rich immature platelets often exhibit hyperactivity, contributing significantly to pathologic conditions such as cardiovascular diseases, sepsis, and thrombosis. However, the impact of aging on surface receptor expression of circulating platelets, particularly whether these effects vary between immature and mature platelets, remains largely unexplored. Thus, we investigated the expression of certain surface and activation receptors on platelets from young and old mice as well as on immature and mature platelets from mouse models of regenerative thrombocytopenia by flow cytometry. Our findings indicate that aged mice show an upregulated expression of the platelet endothelial cell adhesion molecule-1 (CD31), tetraspanin-29 (CD9), and Toll-like receptor 2 (TLR2) compared to their younger counterparts. Interestingly, when comparing immature and mature platelets in both young and old mice, no differences were observed in mature platelets. However, immature platelets from young mice displayed higher surface expression compared to immature platelets from old mice. Additionally, in mouse models of regenerative thrombocytopenia, the majority of receptors were upregulated in immature platelets. These results suggest that distinct surface receptor expressions are increased on platelets from old mice and immature platelets, which may partially explain their heightened activity and contribute to an increased thrombotic risk.
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Affiliation(s)
- Anita Pirabe
- Institute of Vascular Biology and Thrombosis Research, Center of Physiology and Pharmacology, Medical University of Vienna, 1090 Vienna, Austria
| | - Sabine Frühwirth
- Institute of Vascular Biology and Thrombosis Research, Center of Physiology and Pharmacology, Medical University of Vienna, 1090 Vienna, Austria
| | - Laura Brunnthaler
- Institute of Vascular Biology and Thrombosis Research, Center of Physiology and Pharmacology, Medical University of Vienna, 1090 Vienna, Austria
| | - Hubert Hackl
- Institute of Bioinformatics, Biocenter, Medical University of Innsbruck, 6020 Innsbruck, Austria;
| | - Anna Schmuckenschlager
- Institute of Vascular Biology and Thrombosis Research, Center of Physiology and Pharmacology, Medical University of Vienna, 1090 Vienna, Austria
| | - Waltraud C. Schrottmaier
- Institute of Vascular Biology and Thrombosis Research, Center of Physiology and Pharmacology, Medical University of Vienna, 1090 Vienna, Austria
| | - Alice Assinger
- Institute of Vascular Biology and Thrombosis Research, Center of Physiology and Pharmacology, Medical University of Vienna, 1090 Vienna, Austria
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Liu H, Ishikawa-Ankerhold H, Winterhalter J, Lorenz M, Vladymyrov M, Massberg S, Schulz C, Orban M. Multiphoton In Vivo Microscopy of Embryonic Thrombopoiesis Reveals the Generation of Platelets through Budding. Cells 2023; 12:2411. [PMID: 37830625 PMCID: PMC10572188 DOI: 10.3390/cells12192411] [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: 07/26/2023] [Revised: 09/25/2023] [Accepted: 10/03/2023] [Indexed: 10/14/2023] Open
Abstract
Platelets are generated by specialized cells called megakaryocytes (MKs). However, MK's origin and platelet release mode have remained incompletely understood. Here, we established direct visualization of embryonic thrombopoiesis in vivo by combining multiphoton intravital microscopy (MP-IVM) with a fluorescence switch reporter mouse model under control of the platelet factor 4 promoter (Pf4CreRosa26mTmG). Using this microscopy tool, we discovered that fetal liver MKs provide higher thrombopoietic activity than yolk sac MKs. Mechanistically, fetal platelets were released from MKs either by membrane buds or the formation of proplatelets, with the former constituting the key process. In E14.5 c-Myb-deficient embryos that lack definitive hematopoiesis, MK and platelet numbers were similar to wild-type embryos, indicating the independence of embryonic thrombopoiesis from definitive hematopoiesis at this stage of development. In summary, our novel MP-IVM protocol allows the characterization of thrombopoiesis with high spatio-temporal resolution in the mouse embryo and has identified membrane budding as the main mechanism of fetal platelet production.
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Affiliation(s)
- Huan Liu
- Department of Internal Medicine I, Ludwig Maximilians University, 81377 Munich, Germany; (H.L.); (H.I.-A.); (J.W.); (M.L.); (S.M.)
| | - Hellen Ishikawa-Ankerhold
- Department of Internal Medicine I, Ludwig Maximilians University, 81377 Munich, Germany; (H.L.); (H.I.-A.); (J.W.); (M.L.); (S.M.)
| | - Julia Winterhalter
- Department of Internal Medicine I, Ludwig Maximilians University, 81377 Munich, Germany; (H.L.); (H.I.-A.); (J.W.); (M.L.); (S.M.)
| | - Michael Lorenz
- Department of Internal Medicine I, Ludwig Maximilians University, 81377 Munich, Germany; (H.L.); (H.I.-A.); (J.W.); (M.L.); (S.M.)
| | - Mykhailo Vladymyrov
- Laboratory for High Energy Physics (LHEP), Albert Einstein Center for Fundamental Physics, University of Bern, 3012 Bern, Switzerland;
- Theodor Kocher Institute, University of Bern, 3012 Bern, Switzerland
- Data Science Lab, Mathematical Institute, University of Bern, 3012 Bern, Switzerland
| | - Steffen Massberg
- Department of Internal Medicine I, Ludwig Maximilians University, 81377 Munich, Germany; (H.L.); (H.I.-A.); (J.W.); (M.L.); (S.M.)
- DZHK (German Centre for Cardiovascular Research), Partner Site Munich Heart Alliance, 80802 Munich, Germany
| | - Christian Schulz
- Department of Internal Medicine I, Ludwig Maximilians University, 81377 Munich, Germany; (H.L.); (H.I.-A.); (J.W.); (M.L.); (S.M.)
- DZHK (German Centre for Cardiovascular Research), Partner Site Munich Heart Alliance, 80802 Munich, Germany
| | - Mathias Orban
- Department of Internal Medicine I, Ludwig Maximilians University, 81377 Munich, Germany; (H.L.); (H.I.-A.); (J.W.); (M.L.); (S.M.)
- DZHK (German Centre for Cardiovascular Research), Partner Site Munich Heart Alliance, 80802 Munich, Germany
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5
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Tilburg J, Becker IC, Italiano JE. Don't you forget about me(gakaryocytes). Blood 2022; 139:3245-3254. [PMID: 34582554 PMCID: PMC9164737 DOI: 10.1182/blood.2020009302] [Citation(s) in RCA: 15] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2021] [Accepted: 09/08/2021] [Indexed: 11/20/2022] Open
Abstract
Platelets (small, anucleate cell fragments) derive from large precursor cells, megakaryocytes (MKs), that reside in the bone marrow. MKs emerge from hematopoietic stem cells in a complex differentiation process that involves cytoplasmic maturation, including the formation of the demarcation membrane system, and polyploidization. The main function of MKs is the generation of platelets, which predominantly occurs through the release of long, microtubule-rich proplatelets into vessel sinusoids. However, the idea of a 1-dimensional role of MKs as platelet precursors is currently being questioned because of advances in high-resolution microscopy and single-cell omics. On the one hand, recent findings suggest that proplatelet formation from bone marrow-derived MKs is not the only mechanism of platelet production, but that it may also occur through budding of the plasma membrane and in distant organs such as lung or liver. On the other hand, novel evidence suggests that MKs not only maintain physiological platelet levels but further contribute to bone marrow homeostasis through the release of extracellular vesicles or cytokines, such as transforming growth factor β1 or platelet factor 4. The notion of multitasking MKs was reinforced in recent studies by using single-cell RNA sequencing approaches on MKs derived from adult and fetal bone marrow and lungs, leading to the identification of different MK subsets that appeared to exhibit immunomodulatory or secretory roles. In the following article, novel insights into the mechanisms leading to proplatelet formation in vitro and in vivo will be reviewed and the hypothesis of MKs as immunoregulatory cells will be critically discussed.
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Affiliation(s)
- Julia Tilburg
- Vascular Biology Program, Boston Children's Hospital, Boston, MA
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6
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Zini G, Viscovo M. Cytomorphology of normal, reactive, dysmorphic, and dysplastic megakaryocytes in bone marrow aspirates. Int J Lab Hematol 2021; 43 Suppl 1:23-28. [PMID: 34288439 DOI: 10.1111/ijlh.13536] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2021] [Revised: 03/08/2021] [Accepted: 03/19/2021] [Indexed: 11/27/2022]
Abstract
This paper aims to emphasize the importance of applying international consensus guidelines to detect qualitative and quantitative abnormalities of megakaryocytes on smears of bone marrow aspirates (BMA) for a shared and harmonized diagnostic path between different laboratories. Careful evaluation of megakaryocytes on BMA smears represents a cornerstone in the diagnosis of most clonal and nonclonal hematological diseases. Images associated with the detailed morphologic description of normal, reactive, abnormal, and dysplastic megakaryocytes are also reported together with examples of similar cells that, if not promptly identified, can lead to a morphological misdiagnosis.
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Affiliation(s)
- Gina Zini
- Dipartimento Universitario di Scienze Radiologiche ed Ematologiche, Università Cattolica del Sacro Cuore, Roma, Italy.,UOC Emotrasfusione, Fondazione Policlinico Universitario A. Gemelli IRCCS, Roma, Italy
| | - Marcello Viscovo
- Dipartimento Universitario di Scienze Radiologiche ed Ematologiche, Università Cattolica del Sacro Cuore, Roma, Italy
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7
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Meza-León B, Gratzinger D, Aguilar-Navarro AG, Juárez-Aguilar FG, Rebel VI, Torlakovic E, Purton LE, Dorantes-Acosta EM, Escobar-Sánchez A, Dick JE, Flores-Figueroa E. Human, mouse, and dog bone marrow show similar mesenchymal stromal cells within a distinctive microenvironment. Exp Hematol 2021; 100:41-51. [PMID: 34228982 DOI: 10.1016/j.exphem.2021.06.006] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2021] [Revised: 06/22/2021] [Accepted: 06/26/2021] [Indexed: 12/22/2022]
Abstract
Bone marrow stromal cells (BMSCs) are a key part of the hematopoietic niche. Mouse and human BMSCs are recognized by different markers (LepR and NGFR/CD271, respectively). However, there has not been a detailed in situ comparison of both populations within the hematopoietic microenvironment. Moreover, dog BMSCs have not been characterized in situ by any of those markers. We conducted a systematic histopathological comparison of mouse, human, and dog BMSCs within their bone marrow architecture and microenvironment. Human and dog CD271+ BMSCs had a morphology, frequency, and distribution within trabecular bone marrow similar to those of mouse LepR+ BMSCs. However, mouse bone marrow had higher cellularity and megakaryocyte content. In conclusion, highly comparable bone marrow mesenchymal stromal cell distribution among the three species establishes the validity of using mouse and dog as a surrogate experimental model of hematopoietic stem cell-BMSC interactions. However, the distinct differences in adipocyte and megakaryocyte microenvironment content of mouse bone marrow and how they might influence hematopoietic stem cell interactions as compared with humans require further study.
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Affiliation(s)
- Berenice Meza-León
- Unidad de Investigación Médica en Enfermedades Oncológicas. Centro Médico Nacional Siglo XXI, Instituto Mexicano del Seguro Social, Mexico City, México
| | - Dita Gratzinger
- Department of Pathology, Stanford University School of Medicine, Stanford, CA
| | - Alicia G Aguilar-Navarro
- Unidad de Investigación Médica en Enfermedades Oncológicas. Centro Médico Nacional Siglo XXI, Instituto Mexicano del Seguro Social, Mexico City, México
| | - Fany G Juárez-Aguilar
- Departamento de Patología, Hospital de Especialidades, Centro Médico Nacional Siglo XXI, Instituto Mexicano del Seguro Social, Mexico City, México
| | - Vivienne I Rebel
- Department of Cell Systems & Anatomy, The University of Texas Health Science Center at San Antonio, San Antonio, TX
| | - Emina Torlakovic
- Saskatchewan Health Authority (SHA), Saskatoon, Saskatchewan, Canada; University of Saskatchewan, Saskatchewan, Canada
| | - Louise E Purton
- St. Vincent's Institute of Medical Research, Fitzroy, VIC, Australia; Department of Medicine, University of Melbourne, Parkville, VIC, Australia
| | - Elisa M Dorantes-Acosta
- Biobanco de Investigación en Células Leucémicas, Hospital Infantil de México Federico Gómez, Mexico City, México
| | | | - John E Dick
- Princess Margaret Cancer Centre, University Health Network, Toronto, ON, Canada; Department of Molecular Genetics, University of Toronto, Toronto, ON, Canada
| | - Eugenia Flores-Figueroa
- Unidad de Investigación Médica en Enfermedades Oncológicas. Centro Médico Nacional Siglo XXI, Instituto Mexicano del Seguro Social, Mexico City, México; Princess Margaret Cancer Centre, University Health Network, Toronto, ON, Canada.
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8
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Ghosh J, El Koussa R, Mohamad SF, Liu J, Kacena MA, Srour EF. Cellular components of the hematopoietic niche and their regulation of hematopoietic stem cell function. Curr Opin Hematol 2021; 28:243-250. [PMID: 33966008 PMCID: PMC8169581 DOI: 10.1097/moh.0000000000000656] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
PURPOSE OF REVIEW Development and functions of hematopoietic stem cells (HSC) are regulated by multiple cellular components of the hematopoietic niche. Here we review the recent advances in studying the role of three such components -- osteoblasts, osteomacs, and megakaryocytes and how they interact with each other in the hematopoietic niche to regulate HSC. RECENT FINDINGS Recent advances in transgenic mice models, scRNA-seq, transcriptome profile, proteomics, and live animal imaging have revealed the location of HSC within the bone and signaling molecules required for the maintenance of the niche. Interaction between megakaryocytes, osteoblasts and osteomacs enhances hematopoietic stem and progenitor cells (HSPC) function. Studies also revealed the niche as a dynamic entity that undergoes cellular and molecular changes in response to stress. Aging, which results in reduced HSC function, is associated with a decrease in endosteal niches and osteomacs as well as reduced HSC--megakaryocyte interactions. SUMMARY Novel approaches to study the cellular components of the niche and their interactions to regulate HSC development and functions provided key insights about molecules involved in the maintenance of the hematopoietic system. Furthermore, these studies began to build a more comprehensive model of cellular interactions and dynamics in the hematopoietic niche.
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Affiliation(s)
- Joydeep Ghosh
- Department of Medicine, Indiana University School of Medicine, Indianapolis, IN, USA
| | - Roy El Koussa
- Department of Microbiology and Immunology, Indiana University School of Medicine, Indianapolis, IN, USA
| | - Safa F. Mohamad
- Department of Hematology/Oncology, Boston Children’s Hospital, Harvard University, Boston, MA, USA
| | - Jianyun Liu
- Department of Medicine, Indiana University School of Medicine, Indianapolis, IN, USA
| | - Melissa A. Kacena
- Department of Orthopaedic Surgery, Indiana University School of Medicine, Indianapolis, IN, USA
- Department of Anatomy, Cell Biology and Physiology, Indiana University School of Medicine, Indianapolis, IN, USA
| | - Edward F. Srour
- Department of Medicine, Indiana University School of Medicine, Indianapolis, IN, USA
- Department of Microbiology and Immunology, Indiana University School of Medicine, Indianapolis, IN, USA
- Department of Pediatrics, Indiana University School of Medicine, Indianapolis, IN, USA
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9
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Buglak NE, Lucitti J, Ariel P, Maiocchi S, Miller FJ, Bahnson ESM. Light sheet fluorescence microscopy as a new method for unbiased three-dimensional analysis of vascular injury. Cardiovasc Res 2021; 117:520-532. [PMID: 32053173 PMCID: PMC7820842 DOI: 10.1093/cvr/cvaa037] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/27/2019] [Revised: 01/02/2020] [Accepted: 02/05/2020] [Indexed: 12/12/2022] Open
Abstract
AIMS Assessment of preclinical models of vascular disease is paramount in the successful translation of novel treatments. The results of these models have traditionally relied on two-dimensional (2D) histological methodologies. Light sheet fluorescence microscopy (LSFM) is an imaging platform that allows for three-dimensional (3D) visualization of whole organs and tissues. In this study, we describe an improved methodological approach utilizing LSFM for imaging of preclinical vascular injury models while minimizing analysis bias. METHODS AND RESULTS The rat carotid artery segmental pressure-controlled balloon injury and mouse carotid artery ligation injury were performed. Arteries were harvested and processed for LSFM imaging and 3D analysis, as well as for 2D area histological analysis. Artery processing for LSFM imaging did not induce vessel shrinkage or expansion and was reversible by rehydrating the artery, allowing for subsequent sectioning and histological staining a posteriori. By generating a volumetric visualization along the length of the arteries, LSFM imaging provided different analysis modalities including volumetric, area, and radial parameters. Thus, LSFM-imaged arteries provided more precise measurements compared to classic histological analysis. Furthermore, LSFM provided additional information as compared to 2D analysis in demonstrating remodelling of the arterial media in regions of hyperplasia and periadventitial neovascularization around the ligated mouse artery. CONCLUSION LSFM provides a novel and robust 3D imaging platform for visualizing and quantifying arterial injury in preclinical models. When compared with classic histology, LSFM outperformed traditional methods in precision and quantitative capabilities. LSFM allows for more comprehensive quantitation as compared to traditional histological methodologies, while minimizing user bias associated with area analysis of alternating, 2D histological artery cross-sections.
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Affiliation(s)
- Nicholas E Buglak
- Division of Vascular Surgery, Department of Surgery, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599, USA
- Center for Nanotechnology in Drug Delivery, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599, USA
- Curriculum in Toxicology & Environmental Medicine, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599, USA
- McAllister Heart Institute, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599, USA
| | | | - Pablo Ariel
- Microscopy Services Laboratory, Department of Pathology and Laboratory Medicine, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599, USA
| | - Sophie Maiocchi
- Division of Vascular Surgery, Department of Surgery, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599, USA
- Center for Nanotechnology in Drug Delivery, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599, USA
- McAllister Heart Institute, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599, USA
| | - Francis J Miller
- Department of Medicine, Duke University, Durham, NC 27708, USA
- Department of Medicine, Veterans Administration Medical Center, Durham, NC 27705, USA
| | - Edward S M Bahnson
- Division of Vascular Surgery, Department of Surgery, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599, USA
- Center for Nanotechnology in Drug Delivery, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599, USA
- Curriculum in Toxicology & Environmental Medicine, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599, USA
- McAllister Heart Institute, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599, USA
- Department of Cell Biology & Physiology, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599, USA
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10
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Stegner D, Heinze KG. Intravital imaging of megakaryocytes. Platelets 2020; 31:599-609. [PMID: 32153253 DOI: 10.1080/09537104.2020.1738366] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Abstract
The dynamics of platelet formation could only be investigated since the development of two-photon microscopy in combination with suitable fluorescent labeling strategies. In this review paper, we give an overview of recent advances in fluorescence imaging of the bone marrow that have contributed to our understanding of platelet biogenesis during the last decade. We make a brief survey through the perspectives and limitations of today's intravital imaging, but also discuss complementary methods that may help to piece together the puzzle of megakaryopoiesis and platelet formation.
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Affiliation(s)
- David Stegner
- Institute of Experimental Biomedicine, University Hospital Würzburg , Würzburg, Germany
| | - Katrin G Heinze
- Rudolf Virchow Center for Experimental Biomedicine, University of Würzburg , Würzburg, Germany
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