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Calledda FR, Malara A, Balduini A. Inflammation and bone marrow fibrosis: novel immunotherapeutic targets. Curr Opin Hematol 2023; 30:237-244. [PMID: 37548363 DOI: 10.1097/moh.0000000000000778] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/08/2023]
Abstract
PURPOSE OF REVIEW Myelofibrosis (MF) is primarily driven by constitutive activation of the Janus kinase/signal transducer of activators of transcription (JAK/STAT) pathway. While JAK inhibitors have shown to alleviate disease symptoms, their disease-modifying effects in MF are limited. The only curative treatment remains allogeneic stem cell transplantation, which can be applied to a minority of patients. As a result, there is a need to explore novel targets in MF to facilitate appropriate drug development and therapeutic pathways. RECENT FINDINGS Recent research has focused on identifying novel signals that contribute to the abnormal cross-talk between hematopoietic and stromal cells, which promotes MF and disease progression. Inflammation and immune dysregulation have emerged as key drivers of both the initiation and progression of MF. A growing number of actionable targets has been identified, including cytokines, transcription factors, signalling networks and cell surface-associated molecules. These targets exhibit dysfunctions in malignant and nonmalignant hematopoietic cells, but also in nonhematopoietic cells of the bone marrow. The study of these inflammation-related molecules, in preclinical models and MF patient's samples, is providing novel therapeutic targets. SUMMARY The identification of immunotherapeutic targets is expanding the therapeutic landscape of MF. This review provides a summary of the most recent advancements in the study of immunotherapeutic targets in MF.
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Guinard I, Nguyen T, Brassard-Jollive N, Weber J, Ruch L, Reininger L, Brouard N, Eckly A, Collin D, Lanza F, Léon C. Matrix stiffness controls megakaryocyte adhesion, fibronectin fibrillogenesis, and proplatelet formation through Itgβ3. Blood Adv 2023; 7:4003-4018. [PMID: 37171626 PMCID: PMC10410137 DOI: 10.1182/bloodadvances.2022008680] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2022] [Revised: 04/13/2023] [Accepted: 04/17/2023] [Indexed: 05/13/2023] Open
Abstract
Megakaryocytes (MKs) are the precursor cells of platelets, located in the bone marrow (BM). Once mature, they extend elongated projections named proplatelets through sinusoid vessels, emerging from the marrow stroma into the circulating blood. Not all signals from the microenvironment that regulate proplatelet formation are understood, particularly those from the BM biomechanics. We sought to investigate how MKs perceive and adapt to modifications of the stiffness of their environment. Although the BM is one of the softest tissue of the body, its rigidification results from excess fibronectin (FN), and other matrix protein deposition occur upon myelofibrosis. Here, we have shown that mouse MKs are able to detect the stiffness of a FN-coated substrate and adapt their morphology accordingly. Using a polydimethylsiloxane substrate with stiffness varying from physiological to pathological marrow, we found that a stiff matrix favors spreading, intracellular contractility, and FN fibrils assembly at the expense of proplatelet formation. Itgb3, but not Itgb1, is required for stiffness sensing, whereas both integrins are involved in fibrils assembly. In contrast, soft substrates promote proplatelet formation in an Itgb3-dependent manner, consistent with the ex vivo decrease in proplatelet formation and the in vivo decrease in platelet number in Itgb3-deficient mice. Our findings demonstrate the importance of environmental stiffness for MK functions with potential pathophysiological implications during pathologies that deregulate FN deposition and modulate stiffness in the marrow.
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Affiliation(s)
- Ines Guinard
- UMR_S1255, INSERM, Etablissement Français du Sang-Grand Est, Fédération de Médecine Translationnelle de Strasbourg, Université de Strasbourg, Strasbourg, France
| | - Thao Nguyen
- UMR_S1255, INSERM, Etablissement Français du Sang-Grand Est, Fédération de Médecine Translationnelle de Strasbourg, Université de Strasbourg, Strasbourg, France
| | - Noémie Brassard-Jollive
- UMR_S1255, INSERM, Etablissement Français du Sang-Grand Est, Fédération de Médecine Translationnelle de Strasbourg, Université de Strasbourg, Strasbourg, France
| | - Josiane Weber
- UMR_S1255, INSERM, Etablissement Français du Sang-Grand Est, Fédération de Médecine Translationnelle de Strasbourg, Université de Strasbourg, Strasbourg, France
| | - Laurie Ruch
- UMR_S1255, INSERM, Etablissement Français du Sang-Grand Est, Fédération de Médecine Translationnelle de Strasbourg, Université de Strasbourg, Strasbourg, France
| | - Laura Reininger
- UMR_S1255, INSERM, Etablissement Français du Sang-Grand Est, Fédération de Médecine Translationnelle de Strasbourg, Université de Strasbourg, Strasbourg, France
| | - Nathalie Brouard
- UMR_S1255, INSERM, Etablissement Français du Sang-Grand Est, Fédération de Médecine Translationnelle de Strasbourg, Université de Strasbourg, Strasbourg, France
| | - Anita Eckly
- UMR_S1255, INSERM, Etablissement Français du Sang-Grand Est, Fédération de Médecine Translationnelle de Strasbourg, Université de Strasbourg, Strasbourg, France
| | | | - François Lanza
- UMR_S1255, INSERM, Etablissement Français du Sang-Grand Est, Fédération de Médecine Translationnelle de Strasbourg, Université de Strasbourg, Strasbourg, France
| | - Catherine Léon
- UMR_S1255, INSERM, Etablissement Français du Sang-Grand Est, Fédération de Médecine Translationnelle de Strasbourg, Université de Strasbourg, Strasbourg, France
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Koshiishi M, Kawashima I, Hyuga H, Nakadate A, Matsuura M, Hosokawa E, Sakamoto Y, Suzuki J, Suzuki M, Kumagai T, Yamamoto T, Nakajima K, Tanaka M, Kirito K. Presence of bone marrow fibrosis in multiple myeloma may predict extramedullary disease. Int J Hematol 2022; 116:544-552. [PMID: 35538304 DOI: 10.1007/s12185-022-03373-1] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2022] [Revised: 04/20/2022] [Accepted: 04/20/2022] [Indexed: 11/25/2022]
Abstract
We analyzed the incidence of bone marrow fibrosis in 91 newly diagnosed Japanese multiple myeloma (MM) patients and evaluated the impact of fibrosis on clinical characteristics and therapeutic outcomes. Thirty-four (37%) patients had greater than grade 1 bone marrow fibrosis. The presence of bone marrow fibrosis did not affect laboratory data, the percentage of plasma cells in bone marrow or cytogenetic findings. It also had no significant effect on response to initial treatment, engraftment after autologous hematopoietic stem cell transplantation or overall survival. Interestingly, the incidence of extramedullary disease at diagnosis was significantly higher in patients with bone marrow fibrosis (p = 0.006). Analysis of biological characteristics of MM cells revealed that expression of CD49e, an alpha5/beta1 integrin, was downregulated in MM cells derived from patients with bone marrow fibrosis (p = 0.026). When seven of the original 34 patients were re-evaluated for fibrosis grading after treatment, five (71%) showed a reduction in fibrosis. Our present findings suggest that the presence of bone marrow fibrosis may predict development of extramedullary disease in MM.
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Affiliation(s)
- Megumi Koshiishi
- Department of Hematology/Oncology, University of Yamanashi, 1110, Shimokato, Chuo City, Yamanashi-ken, 409-3898, Japan
| | - Ichiro Kawashima
- Department of Hematology/Oncology, University of Yamanashi, 1110, Shimokato, Chuo City, Yamanashi-ken, 409-3898, Japan
| | - Hideto Hyuga
- Department of Hematology/Oncology, University of Yamanashi, 1110, Shimokato, Chuo City, Yamanashi-ken, 409-3898, Japan
| | - Ayato Nakadate
- Department of Hematology/Oncology, University of Yamanashi, 1110, Shimokato, Chuo City, Yamanashi-ken, 409-3898, Japan
| | - Minori Matsuura
- Department of Hematology/Oncology, University of Yamanashi, 1110, Shimokato, Chuo City, Yamanashi-ken, 409-3898, Japan
| | - Eriko Hosokawa
- Department of Hematology/Oncology, University of Yamanashi, 1110, Shimokato, Chuo City, Yamanashi-ken, 409-3898, Japan
| | - Yuma Sakamoto
- Department of Hematology/Oncology, University of Yamanashi, 1110, Shimokato, Chuo City, Yamanashi-ken, 409-3898, Japan
| | - Jun Suzuki
- Department of Hematology/Oncology, University of Yamanashi, 1110, Shimokato, Chuo City, Yamanashi-ken, 409-3898, Japan
| | - Megumi Suzuki
- Department of Hematology/Oncology, University of Yamanashi, 1110, Shimokato, Chuo City, Yamanashi-ken, 409-3898, Japan
| | - Takuma Kumagai
- Department of Hematology/Oncology, University of Yamanashi, 1110, Shimokato, Chuo City, Yamanashi-ken, 409-3898, Japan
| | - Takeo Yamamoto
- Department of Hematology/Oncology, University of Yamanashi, 1110, Shimokato, Chuo City, Yamanashi-ken, 409-3898, Japan
| | - Kei Nakajima
- Department of Hematology/Oncology, University of Yamanashi, 1110, Shimokato, Chuo City, Yamanashi-ken, 409-3898, Japan
| | - Masaru Tanaka
- Department of Hematology/Oncology, University of Yamanashi, 1110, Shimokato, Chuo City, Yamanashi-ken, 409-3898, Japan
| | - Keita Kirito
- Department of Hematology/Oncology, University of Yamanashi, 1110, Shimokato, Chuo City, Yamanashi-ken, 409-3898, Japan.
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Gaye MM, Ward CM, Piasecki AJ, Stahl VL, Karagianni A, Costello CE, Ravid K. Characterization of Glycoproteoforms of Integrins α2 and β1 in Megakaryocytes in the Occurrence of JAK2V617F Mutation-Induced Primary Myelofibrosis. Mol Cell Proteomics 2022; 21:100213. [PMID: 35182768 PMCID: PMC8968581 DOI: 10.1016/j.mcpro.2022.100213] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2021] [Revised: 01/14/2022] [Accepted: 02/14/2022] [Indexed: 12/22/2022] Open
Abstract
Primary myelofibrosis (PMF) is a neoplasm prone to leukemic transformation, for which limited treatment is available. Among individuals diagnosed with PMF, the most prevalent mutation is the JAK2V617F somatic point mutation that activates the Janus kinase 2 (JAK2) enzyme. Our earlier reports on hyperactivity of β1 integrin and enhanced adhesion activity of the α2β1 complex in JAK2V617F megakaryocytes (MKs) led us to examine the new hypothesis that this mutation leads to posttranslational modification via changes in glycosylation. Samples were derived from immunoprecipitation of MKs obtained from Vav1-hJAK2V617F and WT mice. Immunoprecipitated fractions were separated by SDS-PAGE and analyzed using LC-MS/MS techniques in a bottom-up glycoproteomics workflow. In the immunoprecipitate, glycopeptiforms corresponding to 11 out of the 12 potential N-glycosylation sites of integrin β1 and to all nine potential glycosylation sites of integrin α2 were observed. Glycopeptiforms were compared across WT and JAK2V617F phenotypes for both integrins. The overall trend observed is that JAK2V617F mutation in PMF MKs leads to changes in β1 glycosylation; in most cases, it results in an increase in the integrated area of glycopeptiforms. We also observed that in mutated MKs, changes in integrin α2 glycosylation were more substantial than those observed for integrin β1 glycosylation, a finding that suggests that altered integrin α2 glycosylation may also affect activation. Additionally, the identification of proteins associated to the cytoskeleton that were co-immunoprecipitated with integrins α2 and β1 demonstrated the potential of the methodology employed in this study to provide some insight, at the peptide level, into the consequences of integrin activation in MKs. The extensive and detailed glycosylation patterns we uncovered provide a basis for future functional studies of each site in control cells as compared to JAK2V617F-mutated cells. Data are available via ProteomeXchange with identifier PXD030550.
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Affiliation(s)
- Maissa M. Gaye
- Department of Biochemistry, Center for Biomedical Mass Spectrometry, Boston University School of Medicine, Boston, Massachusetts, USA,Department of Medicine and Whitaker Cardiovascular Institute, Boston University School of Medicine, Boston, Massachusetts, USA
| | - Christina M. Ward
- Department of Medicine and Whitaker Cardiovascular Institute, Boston University School of Medicine, Boston, Massachusetts, USA
| | - Andrew J. Piasecki
- Department of Medicine and Whitaker Cardiovascular Institute, Boston University School of Medicine, Boston, Massachusetts, USA
| | - Vanessa L. Stahl
- Department of Biochemistry, Center for Biomedical Mass Spectrometry, Boston University School of Medicine, Boston, Massachusetts, USA
| | - Aikaterini Karagianni
- Department of Medicine and Whitaker Cardiovascular Institute, Boston University School of Medicine, Boston, Massachusetts, USA,Department of Internal Medicine, School of Medicine, University of Crete, Heraklion, Greece
| | - Catherine E. Costello
- Department of Biochemistry, Center for Biomedical Mass Spectrometry, Boston University School of Medicine, Boston, Massachusetts, USA,For correspondence: Catherine E. Costello; Katya Ravid
| | - Katya Ravid
- Department of Medicine and Whitaker Cardiovascular Institute, Boston University School of Medicine, Boston, Massachusetts, USA.
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Yang X, Chitalia SV, Matsuura S, Ravid K. Integrins and their role in megakaryocyte development and function. Exp Hematol 2022; 106:31-39. [PMID: 34910941 PMCID: PMC8795491 DOI: 10.1016/j.exphem.2021.11.007] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2021] [Accepted: 11/24/2021] [Indexed: 02/03/2023]
Abstract
Mature megakaryocytes, the platelet precursors, originate from hematopoietic stem cell progenitors, which, once committed to this lineage, undergo endomitosis leading to polyploidization. The process entails repeated rounds of DNA replication without cell division, yielding polyploid cells. Supporting the cell's developmental process and various cellular functions are integrin receptors, a conduit of communication between the extracellular environment and the cell actin cytoskeleton. Integrins are heterodimers of α and β subunits, where different combinations of the known 18 α and 8 β subunits confer specificity to the receptor. Integrin ligands range from extracellular matrices through soluble ligands, infectious agents, and counterreceptors, to cells. In this review, we describe the different integrins expressed on bone marrow megakaryocytes and their attributed roles in lineage development and cellular functions, including adhesion, spreading, proplatelet formation, and functional interaction with other cells. Pathologies associated with dysregulated megakaryocyte integrin expression are also reviewed.
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Affiliation(s)
- Xiaosheng Yang
- Department of Medicine and Whitaker Cardiovascular Institute, Boston University School of Medicine, Boston, MA, 02118
| | - Shlok V. Chitalia
- Department of Medicine and Whitaker Cardiovascular Institute, Boston University School of Medicine, Boston, MA, 02118
| | - Shinobu Matsuura
- Department of Medicine and Whitaker Cardiovascular Institute, Boston University School of Medicine, Boston, MA, 02118
| | - Katya Ravid
- Department of Medicine and Whitaker Cardiovascular Institute, Boston University School of Medicine, Boston, MA, 02118,To whom correspondence should be addressed: Katya Ravid, Boston University School of Medicine, 700 Albany St, W-6, Boston, MA 02118, Tel: (617)358-8042,
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6
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Bone marrow microenvironment of MPN cells. INTERNATIONAL REVIEW OF CELL AND MOLECULAR BIOLOGY 2021. [PMID: 34756245 DOI: 10.1016/bs.ircmb.2021.07.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/10/2023]
Abstract
In this chapter, we will discuss the current knowledge concerning the alterations of the cellular components in the bone marrow niche in Myeloproliferative Neoplasms (MPNs), highlighting the central role of the megakaryocytes in MPN progression, and the extracellular matrix components characterizing the fibrotic bone marrow.
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7
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Qi H, Shi M, Ni Y, Mo W, Zhang P, Jiang S, Zhang Y, Deng X. Size-Confined Effects of Nanostructures on Fibronectin-Induced Macrophage Inflammation on Titanium Implants. Adv Healthc Mater 2021; 10:e2100994. [PMID: 34196125 DOI: 10.1002/adhm.202100994] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2021] [Indexed: 01/01/2023]
Abstract
Macrophage activation determines the fate of biomaterials implantation. Though researches have shown that fibronectin (FN) is highly involved in integrin-induced macrophage activation on biomaterials, the mechanism of how nanosized structure affects macrophage behavior is still unknown. Here, titanium dioxide nanotube structures with different sizes are fabricated to investigate the effects of nanostructure on macrophage activation. Compared with larger sized nanotubes and smooth surface, 30 nm nanotubes exhibit considerable lesser pro-inflammatory properties on macrophage differentiation. Confocal protein observation and molecular dynamics simulation show that FN displays conformation changes on different nanotubes in a feature of "size-confined," which causes the hiding of Arg-Gly-Asp (RGD) domain on other surfaces. The matching size of nanotube with FN allows the maximum exposure of RGD on 30 nm nanotubes, activating integrin-mediated focal adhesion kinase (FAK)-phosphatidylinositol-3 kinase γ (PI3Kγ) pathway to inhibit nuclear factor kappa B (NF-κB) signaling. In conclusion, this study explains the mechanism of nanostructural-biological signaling transduction in protein and molecular levels, as well as proposes a promising strategy for surface modification to regulate immune responses on bioimplants.
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Affiliation(s)
- Haoning Qi
- The State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei MOST) & Key Laboratory of Oral Biomedicine Ministry of Education School & Hospital of Stomatology Wuhan University Wuhan 430079 P. R. China
| | - Miusi Shi
- The State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei MOST) & Key Laboratory of Oral Biomedicine Ministry of Education School & Hospital of Stomatology Wuhan University Wuhan 430079 P. R. China
| | - Yueqi Ni
- The State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei MOST) & Key Laboratory of Oral Biomedicine Ministry of Education School & Hospital of Stomatology Wuhan University Wuhan 430079 P. R. China
| | - Wenting Mo
- The State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei MOST) & Key Laboratory of Oral Biomedicine Ministry of Education School & Hospital of Stomatology Wuhan University Wuhan 430079 P. R. China
| | - Peng Zhang
- The State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei MOST) & Key Laboratory of Oral Biomedicine Ministry of Education School & Hospital of Stomatology Wuhan University Wuhan 430079 P. R. China
| | - Shuting Jiang
- The State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei MOST) & Key Laboratory of Oral Biomedicine Ministry of Education School & Hospital of Stomatology Wuhan University Wuhan 430079 P. R. China
| | - Yufeng Zhang
- The State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei MOST) & Key Laboratory of Oral Biomedicine Ministry of Education School & Hospital of Stomatology Wuhan University Wuhan 430079 P. R. China
- Medical Research Institute School of Medicine Wuhan University Wuhan 430071 P. R. China
| | - Xuliang Deng
- National Engineering Laboratory for Digital and Material Technology of Stomatology NMPA Key Laboratory for Dental Materials Beijing Laboratory of Biomedical Materials & Beijing Key Laboratory of Digital Stomatology Peking University School and Hospital of Stomatology Beijing 100081 P. R. China
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Cai B, Lin D, Li Y, Wang L, Xie J, Dai T, Liu F, Tang M, Tian L, Yuan Y, Kong L, Shen SGF. N2-Polarized Neutrophils Guide Bone Mesenchymal Stem Cell Recruitment and Initiate Bone Regeneration: A Missing Piece of the Bone Regeneration Puzzle. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2021; 8:e2100584. [PMID: 34382372 PMCID: PMC8498914 DOI: 10.1002/advs.202100584] [Citation(s) in RCA: 47] [Impact Index Per Article: 15.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/10/2021] [Revised: 04/25/2021] [Indexed: 05/14/2023]
Abstract
The role of neutrophils in bone regeneration remains elusive. In this study, it is shown that intramuscular implantation of interleukin-8 (IL-8) (commonly recognized as a chemotactic cytokine for neutrophils) at different levels lead to outcomes resembling those of fracture hematoma at various stages. Ectopic endochondral ossification is induced by certain levels of IL-8, during which neutrophils are recruited to the implanted site and are N2-polarized, which then secrete stromal cell-derived factor-1α (SDF-1α) for bone mesenchymal stem cell (BMSC) chemotaxis via the SDF-1/CXCR4 (C-X-C motif chemokine receptor 4) axis and its downstream phosphatidylinositol 3'-kinase (PI3K)/Akt pathway and β-catenin-mediated migration. Neutrophils are pivotal for recruiting and orchestrating innate and adaptive immunocytes, as well as BMSCs at the initial stage of bone healing and regeneration. The results in this study delineate the mechanism of neutrophil-initiated bone regeneration and interaction between neutrophils and BMSCs, and innate and adaptive immunities. This work lays the foundation for research in the fields of bone regenerative therapy and biomaterial development, and might inspire further research into novel therapeutic options.
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Affiliation(s)
- Bolei Cai
- Department of Oral & Cranio‐Maxillofacial SurgeryShanghai Ninth People's HospitalCollege of StomatologyShanghai Jiao Tong University School of MedicineNational Clinical Research Center for Oral DiseasesShanghai Key Laboratory of Stomatology & Shanghai Research Institute of StomatologyShanghai200011China
- State Key Laboratory of Military Stomatology & National Clinical Research Center for Oral Diseases & Shaanxi Key Laboratory of Oral DiseasesDepartment of Oral and Maxillofacial SurgerySchool of StomatologyThe Fourth Military Medical UniversityXi'an710032China
| | - Dan Lin
- Department of Oral & Cranio‐Maxillofacial SurgeryShanghai Ninth People's HospitalCollege of StomatologyShanghai Jiao Tong University School of MedicineNational Clinical Research Center for Oral DiseasesShanghai Key Laboratory of Stomatology & Shanghai Research Institute of StomatologyShanghai200011China
| | - Yan Li
- State Key Laboratory of Military Stomatology & National Clinical Research Center for Oral Diseases & Shaanxi Key Laboratory of Oral DiseasesDepartment of ProsthodonticsSchool of StomatologyThe Fourth Military Medical UniversityXi'an710032China
| | - Le Wang
- Department of Oral & Cranio‐Maxillofacial SurgeryShanghai Ninth People's HospitalCollege of StomatologyShanghai Jiao Tong University School of MedicineNational Clinical Research Center for Oral DiseasesShanghai Key Laboratory of Stomatology & Shanghai Research Institute of StomatologyShanghai200011China
| | - Jirong Xie
- Department of Oral & Cranio‐Maxillofacial SurgeryShanghai Ninth People's HospitalCollege of StomatologyShanghai Jiao Tong University School of MedicineNational Clinical Research Center for Oral DiseasesShanghai Key Laboratory of Stomatology & Shanghai Research Institute of StomatologyShanghai200011China
- Department of ProsthodonticsSchool of Stomatologythe Jiamusi UniversityJiamusi154003China
| | - Taiqiang Dai
- State Key Laboratory of Military Stomatology & National Clinical Research Center for Oral Diseases & Shaanxi Key Laboratory of Oral DiseasesDepartment of Oral and Maxillofacial SurgerySchool of StomatologyThe Fourth Military Medical UniversityXi'an710032China
| | - Fuwei Liu
- State Key Laboratory of Military Stomatology & National Clinical Research Center for Oral Diseases & Shaanxi Key Laboratory of Oral DiseasesDepartment of Oral and Maxillofacial SurgerySchool of StomatologyThe Fourth Military Medical UniversityXi'an710032China
| | - Mingyue Tang
- State Key Laboratory of Military Stomatology & National Clinical Research Center for Oral Diseases & Shaanxi Key Laboratory of Oral DiseasesDepartment of Oral and Maxillofacial SurgerySchool of StomatologyThe Fourth Military Medical UniversityXi'an710032China
| | - Lei Tian
- Department of Oral & Cranio‐Maxillofacial SurgeryShanghai Ninth People's HospitalCollege of StomatologyShanghai Jiao Tong University School of MedicineNational Clinical Research Center for Oral DiseasesShanghai Key Laboratory of Stomatology & Shanghai Research Institute of StomatologyShanghai200011China
| | - Yuan Yuan
- Key Laboratory for Ultrafine Materials of Ministry of EducationSchool of Materials Science and Engineeringand Engineering Research Center for Biomedical Materials of Ministry of EducationEast China University of Science and TechnologyShanghai200237P. R. China
| | - Liang Kong
- State Key Laboratory of Military Stomatology & National Clinical Research Center for Oral Diseases & Shaanxi Key Laboratory of Oral DiseasesDepartment of Oral and Maxillofacial SurgerySchool of StomatologyThe Fourth Military Medical UniversityXi'an710032China
| | - Steve G. F. Shen
- Department of Oral & Cranio‐Maxillofacial SurgeryShanghai Ninth People's HospitalCollege of StomatologyShanghai Jiao Tong University School of MedicineNational Clinical Research Center for Oral DiseasesShanghai Key Laboratory of Stomatology & Shanghai Research Institute of StomatologyShanghai200011China
- Shanghai University of Medicine and Health SciencesShanghai201318P. R. China
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Abstract
Thrombocytopoiesis is a complex process beginning at the level of hematopoietic stem cells, which ultimately generate megakaryocytes, large marrow cells with a distinctive morphology, and then, through a process of terminal maturation, megakaryocytes shed thousands of platelets into the circulation. This process is controlled by intrinsic and extrinsic factors. Emerging data indicate that an important intrinsic control on the late stages of thrombopoiesis is exerted by integrins, a family of transmembrane receptors composed of one α and one β subunit. One β subunit expressed by megakaryocytes is the β1 integrin, the role of which in the regulation of platelet formation is beginning to be clarified. Here, we review recent data indicating that activation of β1 integrin by outside-in and inside-out signaling regulates the interaction of megakaryocytes with the endosteal niche, which triggers their maturation, while its inactivation by galactosylation determines the migration of these cells to the perivascular niche, where they complete their terminal maturation and release platelets in the bloodstream. Furthermore, β1 integrin mediates the activation of transforming growth factor β (TGF-β), a protein produced by megakaryocytes that may act in an autocrine fashion to halt their maturation and affect the composition of their surrounding extracellular matrix. These findings suggest that β1 integrin could be a therapeutic target for inherited and acquired disorders of platelet production.
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Affiliation(s)
- Maria Mazzarini
- Biomedical and Neuromotor Sciences, Alma Mater University Bologna, Italy
| | - Paola Verachi
- Biomedical and Neuromotor Sciences, Alma Mater University Bologna, Italy
| | - Fabrizio Martelli
- National Center for Preclinical and Clinical Research and Evaluation of Pharmaceutical Drugs, Rome, Italy
| | - Anna Rita Migliaccio
- University Campus Biomedico, Rome, Italy
- Myeloproliferative Neoplasm-Research Consortium, New York, NY, USA
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10
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Wirth F, Lubosch A, Hamelmann S, Nakchbandi IA. Fibronectin and Its Receptors in Hematopoiesis. Cells 2020; 9:cells9122717. [PMID: 33353083 PMCID: PMC7765895 DOI: 10.3390/cells9122717] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2020] [Revised: 12/08/2020] [Accepted: 12/15/2020] [Indexed: 02/07/2023] Open
Abstract
Fibronectin is a ubiquitous extracellular matrix protein that is produced by many cell types in the bone marrow and distributed throughout it. Cells of the stem cell niche produce the various isoforms of this protein. Fibronectin not only provides the cells a scaffold to bind to, but it also modulates their behavior by binding to receptors on the adjacent hematopoietic stem cells and stromal cells. These receptors, which include integrins such as α4β1, α9β1, α4β7, α5β1, αvβ3, Toll-like receptor-4 (TLR-4), and CD44, are found on the hematopoietic stem cell. Because the knockout of fibronectin is lethal during embryonal development and because fibronectin is produced by almost all cell types in mammals, the study of its role in hematopoiesis is difficult. Nevertheless, strong and direct evidence exists for its stimulation of myelopoiesis and thrombopoiesis using in vivo models. Other reviewed effects can be deduced from the study of fibronectin receptors, which showed their activation modifies the behavior of hematopoietic stem cells. Erythropoiesis was only stimulated under hemolytic stress, and mostly late stages of lymphocytic differentiation were modulated. Because fibronectin is ubiquitously expressed, these interactions in health and disease need to be taken into account whenever any molecule is evaluated in hematopoiesis.
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Affiliation(s)
- Franziska Wirth
- Institute of Immunology, University of Heidelberg, 69120 Heidelberg, Germany; (F.W.); (A.L.); (S.H.)
| | - Alexander Lubosch
- Institute of Immunology, University of Heidelberg, 69120 Heidelberg, Germany; (F.W.); (A.L.); (S.H.)
| | - Stefan Hamelmann
- Institute of Immunology, University of Heidelberg, 69120 Heidelberg, Germany; (F.W.); (A.L.); (S.H.)
| | - Inaam A. Nakchbandi
- Institute of Immunology, University of Heidelberg, 69120 Heidelberg, Germany; (F.W.); (A.L.); (S.H.)
- Max-Planck Institute for Medical Research, 69120 Heidelberg, Germany
- Correspondence: ; Tel.: +49-622-156-8744
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Yuan X, Yang S, Li W, Li J, Lin J, Wu Y, Chen Y. Construction of fibronectin conditional gene knock-out mice and the effect of fibronectin gene knockout on hematopoietic, biochemical and immune parameters in mice. PeerJ 2020; 8:e10224. [PMID: 33194415 PMCID: PMC7605225 DOI: 10.7717/peerj.10224] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2020] [Accepted: 09/29/2020] [Indexed: 12/03/2022] Open
Abstract
Fibronectin (FN) is a multi-functional glycoprotein that primarily acts as a cell adhesion molecule and tethers cells to the extra cellular matrix. In order to clarify the effect of FN deficiency on hematopoiesis, biochemical and immune parameters in mice. We constructed a tamoxifen-induced conditional (cre-loxp system) fibronectin knock-out (FnKO) mouse model on a C57BL/6 background, and monitored their behavior, fertility, histological, hematopoietic, biochemical and immunological indices. We found that the Fn KO mice had reduced fertility, high platelet counts, smaller bone marrow megakaryocytes and looser attachment between the hepatocyte and vascular endothelial junctions compared to the wild type (WT) mice. In contrast, the behavior, hematological counts, serum biochemical indices and vital organ histology were similar in both Fn KO and WT mice. This model will greatly help in elucidating the role of FN in immune-related diseases in future.
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Affiliation(s)
- Xiaohong Yuan
- Insitute of Hematology, Fujian Medical University Union Hospital, Fuzhou, Fujian, China
| | - Shu Yang
- Insitute of Hematology, Fujian Medical University Union Hospital, Fuzhou, Fujian, China
| | - Wen Li
- Department of Pathology, Fujian Medical University Union Hospital, Fuzhou, Fujian, China
| | - Jinggang Li
- Insitute of Hematology, Fujian Medical University Union Hospital, Fuzhou, Fujian, China
| | - Jia Lin
- Insitute of Hematology, Fujian Medical University Union Hospital, Fuzhou, Fujian, China
| | - Yong Wu
- Insitute of Hematology, Fujian Medical University Union Hospital, Fuzhou, Fujian, China
| | - Yuanzhong Chen
- Insitute of Hematology, Fujian Medical University Union Hospital, Fuzhou, Fujian, China
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