Notch Signaling in HSC Emergence: When, Why and How

The hematopoietic stem cell (HSC) sustains blood homeostasis throughout life in vertebrates. During embryonic development, HSCs emerge from the aorta-gonads and mesonephros (AGM) region along with hematopoietic progenitors within hematopoietic clusters which are found in the dorsal aorta, the main a...

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Main Authors: Roshana Thambyrajah, Anna Bigas
Format: Article
Language:English
Published: MDPI AG 2022-01-01
Series:Cells
Subjects:
Online Access:https://www.mdpi.com/2073-4409/11/3/358
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author Roshana Thambyrajah
Anna Bigas
author_facet Roshana Thambyrajah
Anna Bigas
author_sort Roshana Thambyrajah
collection DOAJ
description The hematopoietic stem cell (HSC) sustains blood homeostasis throughout life in vertebrates. During embryonic development, HSCs emerge from the aorta-gonads and mesonephros (AGM) region along with hematopoietic progenitors within hematopoietic clusters which are found in the dorsal aorta, the main arterial vessel. Notch signaling, which is essential for arterial specification of the aorta, is also crucial in hematopoietic development and HSC activity. In this review, we will present and discuss the evidence that we have for Notch activity in hematopoietic cell fate specification and the crosstalk with the endothelial and arterial lineage. The core hematopoietic program is conserved across vertebrates and here we review studies conducted using different models of vertebrate hematopoiesis, including zebrafish, mouse and in vitro differentiated Embryonic stem cells. To fulfill the goal of engineering HSCs in vitro, we need to understand the molecular processes that modulate Notch signaling during HSC emergence in a temporal and spatial context. Here, we review relevant contributions from different model systems that are required to specify precursors of HSC and HSC activity through Notch interactions at different stages of development.
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spelling doaj.art-4f43515fbcb74e4a9b6b5bddbdebcd262023-11-23T16:10:30ZengMDPI AGCells2073-44092022-01-0111335810.3390/cells11030358Notch Signaling in HSC Emergence: When, Why and HowRoshana Thambyrajah0Anna Bigas1Program in Cancer Research, Institut Hospital del Mar d’Investigacions Mèdiques, CIBERONC, 08003 Barcelona, SpainProgram in Cancer Research, Institut Hospital del Mar d’Investigacions Mèdiques, CIBERONC, 08003 Barcelona, SpainThe hematopoietic stem cell (HSC) sustains blood homeostasis throughout life in vertebrates. During embryonic development, HSCs emerge from the aorta-gonads and mesonephros (AGM) region along with hematopoietic progenitors within hematopoietic clusters which are found in the dorsal aorta, the main arterial vessel. Notch signaling, which is essential for arterial specification of the aorta, is also crucial in hematopoietic development and HSC activity. In this review, we will present and discuss the evidence that we have for Notch activity in hematopoietic cell fate specification and the crosstalk with the endothelial and arterial lineage. The core hematopoietic program is conserved across vertebrates and here we review studies conducted using different models of vertebrate hematopoiesis, including zebrafish, mouse and in vitro differentiated Embryonic stem cells. To fulfill the goal of engineering HSCs in vitro, we need to understand the molecular processes that modulate Notch signaling during HSC emergence in a temporal and spatial context. Here, we review relevant contributions from different model systems that are required to specify precursors of HSC and HSC activity through Notch interactions at different stages of development.https://www.mdpi.com/2073-4409/11/3/358Notch signalingHSCdevelopmental hematopoiesisAGM
spellingShingle Roshana Thambyrajah
Anna Bigas
Notch Signaling in HSC Emergence: When, Why and How
Cells
Notch signaling
HSC
developmental hematopoiesis
AGM
title Notch Signaling in HSC Emergence: When, Why and How
title_full Notch Signaling in HSC Emergence: When, Why and How
title_fullStr Notch Signaling in HSC Emergence: When, Why and How
title_full_unstemmed Notch Signaling in HSC Emergence: When, Why and How
title_short Notch Signaling in HSC Emergence: When, Why and How
title_sort notch signaling in hsc emergence when why and how
topic Notch signaling
HSC
developmental hematopoiesis
AGM
url https://www.mdpi.com/2073-4409/11/3/358
work_keys_str_mv AT roshanathambyrajah notchsignalinginhscemergencewhenwhyandhow
AT annabigas notchsignalinginhscemergencewhenwhyandhow