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Sharma, Swati, 2013. Vaat functionality in cholinergic and dopaminergic neurons. Second cycle, A2E. Uppsala: SLU, Dept. of Microbiology

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Abstract

SLC10A4 (Solute carrier family 10 member 4) is a member of the sodium/bile acid co-transporter protein family. Previous studies indicated that this protein is a molecular link between two subpopulations of neurons i.e the monoaminergic and cholinergic. These neural subpopulations are widespread in the central nervous system (CNS) and are involved in most processes of our behaviour related to motivation, perseverance, reward system as well as all of the motor output. In this research study the focus has been on using Slc10a4 wild type (WT), knockout (KO) and Slc10a4 over expressing mouse, to characterize the function of a Vesicular Aminergic Associated transporter (VAAT) in cholinergic and dopaminergic neurons in the brain. Increased motor activity and increased drug-induced hyperactivity have been observed in KO mice. At subcellular level VAAT co-localizes with Vesicular Acetylcholine Transporter (VAChT) and Vesicular monoamine transporter (Vmat-2) on small synaptic vesicles (SV) at axon-termini in the brain. Experiments were performed to understand the significance of VAAT in cholinergic and dopaminergic systems, investigate VAChT distribution in neuromuscular junctions (NMJ) in VAAT mutant mice, study dopamine (DA) uptake efficiency in vesicles, investigate the epileptic link of VAAT and understand motor behavior of mutant mice. It was observed that VAAT colocalizes with VAChT in NMJ’s of diaphragm and gastrocnemius mouse muscles. The protocol for vesicular uptake studies was optimized under different conditions. Results illustrated that VAAT over-expressing mice show higher DA uptake compared to WT, while KO mice show less vesicular uptake. RNA expression analysis of muscarinic, nicotinic and dopaminergic receptors in striatum and hippocampus brain regions was performed. RT-qPCR results indicated no significant difference in expression levels; in both control and KO VAAT samples.

Main title:Vaat functionality in cholinergic and dopaminergic neurons
Authors:Sharma, Swati
Supervisor:Tiukova, Ievgeniia and Patra, Kalicharan and Kullander, Klas
Examiner:Passoth, Volkmar
Series:Examensarbete / Sveriges lantbruksuniversitet, Institutionen för mikrobiologi
Volume/Sequential designation:2013:1
Year of Publication:2013
Level and depth descriptor:Second cycle, A2E
Student's programme affiliation:NM003 Biotechnology - Master's Programme 120 HEC
Department:(NL, NJ) > Dept. of Microbiology
Keywords:VAAT, VAChT, cholinergic, dopaminergic, synaptic vesicles, neuromuscular junctions, SLC10a4, dopamine uptake, striatum, hippocampus
URN:NBN:urn:nbn:se:slu:epsilon-s-1995
Permanent URL:
http://urn.kb.se/resolve?urn=urn:nbn:se:slu:epsilon-s-1995
Subjects:Animal physiology and biochemistry
Language:English
Deposited On:25 Jan 2013 15:29
Metadata Last Modified:04 Nov 2015 10:47

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