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Brix A, Belleri L, Pezzotta A, Pettinato E, Mazzola M, Zoccolillo M, Marozzi A, Monteiro R, Del Bene F, Mortellaro A, Pistocchi A. ADA2 regulates inflammation and hematopoietic stem cell emergence via the A 2bR pathway in zebrafish. Commun Biol 2024; 7:615. [PMID: 38777862 PMCID: PMC11111730 DOI: 10.1038/s42003-024-06286-3] [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: 09/28/2023] [Accepted: 05/03/2024] [Indexed: 05/25/2024] Open
Abstract
Deficiency of adenosine deaminase 2 (DADA2) is an inborn error of immunity caused by loss-of-function mutations in the adenosine deaminase 2 (ADA2) gene. Clinical manifestations of DADA2 include vasculopathy and immuno-hematological abnormalities, culminating in bone marrow failure. A major gap exists in our knowledge of the regulatory functions of ADA2 during inflammation and hematopoiesis, mainly due to the absence of an ADA2 orthologue in rodents. Exploring these mechanisms is essential for understanding disease pathology and developing new treatments. Zebrafish possess two ADA2 orthologues, cecr1a and cecr1b, with the latter showing functional conservation with human ADA2. We establish a cecr1b-loss-of-function zebrafish model that recapitulates the immuno-hematological and vascular manifestations observed in humans. Loss of Cecr1b disrupts hematopoietic stem cell specification, resulting in defective hematopoiesis. This defect is caused by induced inflammation in the vascular endothelium. Blocking inflammation, pharmacological modulation of the A2r pathway, or the administration of the recombinant human ADA2 corrects these defects, providing insights into the mechanistic link between ADA2 deficiency, inflammation and immuno-hematological abnormalities. Our findings open up potential therapeutic avenues for DADA2 patients.
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Affiliation(s)
- Alessia Brix
- Department of Medical Biotechnology and Translational Medicine, Università degli Studi di Milano, L.I.T.A., via Fratelli Cervi 93, Segrate, 20054, Milan, Italy
| | - Laura Belleri
- Department of Medical Biotechnology and Translational Medicine, Università degli Studi di Milano, L.I.T.A., via Fratelli Cervi 93, Segrate, 20054, Milan, Italy
- Department of Development, Institut de la Vision, 17 Rue Moreau, 75012, Paris, France
| | - Alex Pezzotta
- Department of Medical Biotechnology and Translational Medicine, Università degli Studi di Milano, L.I.T.A., via Fratelli Cervi 93, Segrate, 20054, Milan, Italy
| | - Emanuela Pettinato
- San Raffaele Telethon Institute for Gene Therapy (SR-Tiget), IRCCS San Raffaele Scientific Institute, via Olgettina 60, 20132, Milan, Italy
| | - Mara Mazzola
- Department of Medical Biotechnology and Translational Medicine, Università degli Studi di Milano, L.I.T.A., via Fratelli Cervi 93, Segrate, 20054, Milan, Italy
| | - Matteo Zoccolillo
- San Raffaele Telethon Institute for Gene Therapy (SR-Tiget), IRCCS San Raffaele Scientific Institute, via Olgettina 60, 20132, Milan, Italy
| | - Anna Marozzi
- Department of Medical Biotechnology and Translational Medicine, Università degli Studi di Milano, L.I.T.A., via Fratelli Cervi 93, Segrate, 20054, Milan, Italy
| | - Rui Monteiro
- Institute of Cancer and Genomic Sciences, University of Birmingham, Birmingham, Edgbaston, B15 2TTB, UK
| | - Filippo Del Bene
- Department of Development, Institut de la Vision, 17 Rue Moreau, 75012, Paris, France
| | - Alessandra Mortellaro
- San Raffaele Telethon Institute for Gene Therapy (SR-Tiget), IRCCS San Raffaele Scientific Institute, via Olgettina 60, 20132, Milan, Italy.
| | - Anna Pistocchi
- Department of Medical Biotechnology and Translational Medicine, Università degli Studi di Milano, L.I.T.A., via Fratelli Cervi 93, Segrate, 20054, Milan, Italy.
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Zheng K, Wei Z, Li W. Ecological insights into hematopoiesis regulation: unraveling the influence of gut microbiota. Gut Microbes 2024; 16:2350784. [PMID: 38727219 PMCID: PMC11093038 DOI: 10.1080/19490976.2024.2350784] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/04/2024] [Accepted: 04/29/2024] [Indexed: 05/16/2024] Open
Abstract
The gut microbiota constitutes a vast ecological system within the human body, forming a mutually interdependent entity with the host. In recent years, advancements in molecular biology technologies have provided a clearer understanding of the role of the gut microbiota. They not only influence the local immune status and metabolic functions of the host's intestinal tract but also impact the functional transformation of hematopoietic stem cells (HSCs) through the gut-blood axis. In this review, we will discuss the role of the gut microbiota in influencing hematopoiesis. We analyze the interactions between HSCs and other cellular components, with a particular emphasis on the direct functional regulation of HSCs by the gut microbiota and their indirect influence through cellular components in the bone marrow microenvironment. Additionally, we propose potential control targets for signaling pathways triggered by the gut microbiota to regulate hematopoietic function, filling crucial knowledge gaps in the development of this research field.
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Affiliation(s)
- Kaiwen Zheng
- Cancer Center, the First Hospital of Jilin University, Changchun, China
| | - Zhifeng Wei
- Department of Hematology, The First Hospital of Jilin University, Changchun, China
| | - Wei Li
- Cancer Center, the First Hospital of Jilin University, Changchun, China
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Kotlyarov S. Immune Function of Endothelial Cells: Evolutionary Aspects, Molecular Biology and Role in Atherogenesis. Int J Mol Sci 2022; 23:ijms23179770. [PMID: 36077168 PMCID: PMC9456046 DOI: 10.3390/ijms23179770] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2022] [Revised: 08/23/2022] [Accepted: 08/25/2022] [Indexed: 11/16/2022] Open
Abstract
Atherosclerosis is one of the key problems of modern medicine, which is due to the high prevalence of atherosclerotic cardiovascular diseases and their significant share in the structure of morbidity and mortality in many countries. Atherogenesis is a complex chain of events that proceeds over many years in the vascular wall with the participation of various cells. Endothelial cells are key participants in vascular function. They demonstrate involvement in the regulation of vascular hemodynamics, metabolism, and innate immunity, which act as leading links in the pathogenesis of atherosclerosis. These endothelial functions have close connections and deep evolutionary roots, a better understanding of which will improve the prospects of early diagnosis and effective treatment.
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Affiliation(s)
- Stanislav Kotlyarov
- Department of Nursing, Ryazan State Medical University, 390026 Ryazan, Russia
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