Aorta Gonad Mesonephros
Aorta Gonad Mesonephros - Related Videos
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Application of Aorta-gonad-mesonephros Explant Culture System in Developmental Hematopoiesis
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Cited by 2 •
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This protocol describes using cultured Aorta-Gonad-Mesonephros for expression analyses, colony-forming units in the culture and spleen, and long-term reconstitution to determine the effect of regulatory factors and signaling pathways on hematopoietic stem cell development. This has been demonstrated as an effective system for studying hematopoietic stem cell biology and function.
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Dissection of Larval Zebrafish Gonadal Tissue
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Cited by 6 •
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Here, we present a protocol for isolating gonadal tissue of larval zebrafish, which will facilitate investigations of zebrafish sex differentiation and maintenance.
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C. elegans Gonad Extrusion: A Rapid Dissection Technique
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2023
This video describes a method to dissect gonads from adult C. elegans hermaphrodites, resulting in tissues that are suitable for immunostaining and fluorescent imaging.
03:59
Gonad Microinjection: A Method of Compound Delivery Directly into the Germline of C. elegans
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2023
This video describes microinjection, a common method of creating transgenic C. elegans strains. In the example, we will see microinjection used to introduce a ribonucleoprotein (RNP) complex for CRISPR-bases gene editing.
01:24
Gonadal and Placental Hormones
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2026
The gonads, namely the testes in males and the ovaries in females, are pivotal in producing gonadal hormones that orchestrate the intricate processes of sexual development and reproduction. In males, testosterone is the primary gonadal androgen. It plays a central role in the maturation of male reproductive organs — the penis and testes. Additionally, testosterone is instrumental in the development of secondary sexual characteristics — a deep voice as well as facial and pubic hair growth — and...
FAQs
The key mechanistic event in AGM blood development is the endothelial-to-hematopoietic transition. Specialized hemogenic endothelial cells in the ventral wall of the dorsal aorta change developmental state and generate definitive hematopoietic stem and progenitor cells. This links vascular tissue directly to blood formation and makes the region useful for investigating how blood stem-cell emergence begins during vertebrate organogenesis.
The ventral wall of the dorsal aorta is important because it contains the specialized hemogenic endothelial cells identified as the source of definitive hematopoietic stem and progenitor cells. Focusing on this wall helps relate vascular development to the emergence of blood-forming cells, rather than treating blood production as an isolated process. This spatial relationship is central to AGM biology.
The proximity of the aorta, gonadal region, and mesonephric region makes the AGM a setting for studying neighboring-tissue interactions. Blood-forming, reproductive, and urinary developmental processes occur within the same embryonic domain, so research can consider how organ systems develop in relation to one another. This perspective is especially relevant to vertebrate organogenesis and developmental biology.
Once definitive hematopoietic stem and progenitor cells arise, they migrate from the AGM to sites such as the fetal liver. This movement shows that the AGM is an emergence site rather than the only location relevant to subsequent blood development. Following the relationship between origin and destination helps frame how embryonic blood formation is organized across tissues.
Researchers use the AGM region to connect three questions: how vascular development produces blood-forming cells, how neighboring tissues interact, and how emerging stem and progenitor cells relocate. As a model, it supports integrated study of organogenesis rather than analysis of blood, vessels, reproductive tissues, or urinary tissues in isolation. Its value lies in this developmental context.
AGM research can help frame congenital disease studies around abnormal organ development, blood-stem-cell emergence, or interactions among adjacent embryonic tissues. Because the region links vascular, hematopoietic, reproductive, and urinary development, it offers a context for asking how disruptions during organogenesis might affect more than one developmental system. The source material identifies congenital disease as a key application.
The AGM region is relevant because it provides a developmental reference for the emergence of definitive hematopoietic stem and progenitor cells from hemogenic endothelium. Understanding this relationship can inform efforts to generate blood stem cells for regenerative medicine by focusing attention on the embryonic context in which those cells first arise. The approach connects developmental biology with translational goals.