Fate map of serotonin transporter-expressing cells in developing mouse heart. 2007

Luigi Michele Pavone, and Pratibha Mithbaokar, and Vincenzo Mastellone, and Luigi Avallone, and Patricia Gaspar, and Veeramani Maharajan, and Antonio Baldini
Department of Biological Structures, Functions, and Technologies, University of Naples Federico II, Naples, Italy. pavone@dbbm.unina.it

Serotonin regulates cardiovascular functions during embryogenesis and adulthood. However, the source of serotonin in the cardiovascular system and the role of circulating serotonin and serotonin transporter (SERT) in the regulation of cardiovascular functions are still unclear. We used a cell fate approach to map the regions of the mouse heart expressing SERT, utilizing a Cre/loxP system driven by SERT gene expression. Cell labelling was first detected at E10.5 and was mapped until E18.5. We found labelling in the outflow tract, part of right ventricle and to a very limited extent in the left ventricle. Interestingly, the distribution pattern of SERT-fated cells was remarkably similar to that obtained with markers of the second heart field lineage. In addition, we observed staining of atrioventricular valves, consistent with valvular abnormalities observed in SERT-/-animals. Overall, our data reveal specific and regionally restricted distribution of SERT-expressing cells in the developing heart of mouse.

UI MeSH Term Description Entries
D009206 Myocardium The muscle tissue of the HEART. It is composed of striated, involuntary muscle cells (MYOCYTES, CARDIAC) connected to form the contractile pump to generate blood flow. Muscle, Cardiac,Muscle, Heart,Cardiac Muscle,Myocardia,Cardiac Muscles,Heart Muscle,Heart Muscles,Muscles, Cardiac,Muscles, Heart
D004622 Embryo, Mammalian The entity of a developing mammal (MAMMALS), generally from the cleavage of a ZYGOTE to the end of embryonic differentiation of basic structures. For the human embryo, this represents the first two months of intrauterine development preceding the stages of the FETUS. Embryonic Structures, Mammalian,Mammalian Embryo,Mammalian Embryo Structures,Mammalian Embryonic Structures,Embryo Structure, Mammalian,Embryo Structures, Mammalian,Embryonic Structure, Mammalian,Embryos, Mammalian,Mammalian Embryo Structure,Mammalian Embryonic Structure,Mammalian Embryos,Structure, Mammalian Embryo,Structure, Mammalian Embryonic,Structures, Mammalian Embryo,Structures, Mammalian Embryonic
D006321 Heart The hollow, muscular organ that maintains the circulation of the blood. Hearts
D000818 Animals Unicellular or multicellular, heterotrophic organisms, that have sensation and the power of voluntary movement. Under the older five kingdom paradigm, Animalia was one of the kingdoms. Under the modern three domain model, Animalia represents one of the many groups in the domain EUKARYOTA. Animal,Metazoa,Animalia
D050486 Serotonin Plasma Membrane Transport Proteins Sodium chloride-dependent neurotransmitter symporters located primarily on the PLASMA MEMBRANE of serotonergic neurons. They are different than SEROTONIN RECEPTORS, which signal cellular responses to SEROTONIN. They remove SEROTONIN from the EXTRACELLULAR SPACE by high affinity reuptake into PRESYNAPTIC TERMINALS. Regulates signal amplitude and duration at serotonergic synapses and is the site of action of the SELECTIVE SEROTONIN REUPTAKE INHIBITORS. Neurotransmitter Transport Proteins, Serotonin-Specific,Neurotransmitter Transporters, Serotonin-Specific,Serotonin Plasma Membrane Transporter Proteins,5-Hydroxytryptamine Plasma Membrane Transport Protein,5HT Transporter,Platelet Serotonin Transporter,SERT Proteins,SLC6A4 Protein,Serotonectin,Serotonin Transporter,Serotonin Transporter, Platelets,Sodium-Dependent Serotonin Transporter,Solute Carrier Family 6, Member 4 Protein,5 Hydroxytryptamine Plasma Membrane Transport Protein,Neurotransmitter Transport Proteins, Serotonin Specific,Neurotransmitter Transporters, Serotonin Specific,Platelets Serotonin Transporter,Serotonin Transporter, Platelet,Serotonin Transporter, Sodium-Dependent,Serotonin-Specific Neurotransmitter Transporters,Sodium Dependent Serotonin Transporter,Transporter, Sodium-Dependent Serotonin
D051379 Mice The common name for the genus Mus. Mice, House,Mus,Mus musculus,Mice, Laboratory,Mouse,Mouse, House,Mouse, Laboratory,Mouse, Swiss,Mus domesticus,Mus musculus domesticus,Swiss Mice,House Mice,House Mouse,Laboratory Mice,Laboratory Mouse,Mice, Swiss,Swiss Mouse,domesticus, Mus musculus
D018507 Gene Expression Regulation, Developmental Any of the processes by which nuclear, cytoplasmic, or intercellular factors influence the differential control of gene action during the developmental stages of an organism. Developmental Gene Expression Regulation,Embryologic Gene Expression Regulation,Gene Expression Regulation, Embryologic,Regulation of Gene Expression, Developmental,Regulation of Gene Expression, Embryologic,Regulation, Gene Expression, Developmental,Regulation, Gene Expression, Embryologic
D019070 Cell Lineage The developmental history of specific differentiated cell types as traced back to the original STEM CELLS in the embryo. Cell Lineages,Lineage, Cell,Lineages, Cell

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