TY  - JOUR
A1  - Pfeiffer-Guglielmi, Brigitte
A1  - Dombert, Benjamin
A1  - Jablonka, Sibylle
A1  - Hausherr, Vanessa
A1  - van Thriel, Christoph
A1  - Schobel, Nicole
A1  - Jansen, Ralf-Peter
T1  - Axonal and dendritic localization of mRNAs for glycogen-metabolizing enzymes in cultured rodent neurons
JF  - BMC Neuroscience
N2  - Background: Localization of mRNAs encoding cytoskeletal or signaling proteins to neuronal processes is known to contribute to axon growth, synaptic differentiation and plasticity. In addition, a still increasing spectrum of mRNAs has been demonstrated to be localized under different conditions and developing stages thus reflecting a highly regulated mechanism and a role of mRNA localization in a broad range of cellular processes. 
Results: Applying fluorescence in-situ-hybridization with specific riboprobes on cultured neurons and nervous tissue sections, we investigated whether the mRNAs for two metabolic enzymes, namely glycogen synthase (GS) and glycogen phosphorylase (GP), the key enzymes of glycogen metabolism, may also be targeted to neuronal processes. If it were so, this might contribute to clarify the so far enigmatic role of neuronal glycogen. We found that the mRNAs for both enzymes are localized to axonal and dendritic processes in cultured lumbar spinal motoneurons, but not in cultured trigeminal neurons. In cultured cortical neurons which do not store glycogen but nevertheless express glycogen synthase, the GS mRNA is also subject to axonal and dendritic localization. In spinal motoneurons and trigeminal neurons in situ, however, the mRNAs could only be demonstrated in the neuronal somata but not in the nerves. 
Conclusions: We could demonstrate that the mRNAs for major enzymes of neural energy metabolism can be localized to neuronal processes. The heterogeneous pattern of mRNA localization in different culture types and developmental stages stresses that mRNA localization is a versatile mechanism for the fine-tuning of cellular events. Our findings suggest that mRNA localization for enzymes of glycogen metabolism could allow adaptation to spatial and temporal energy demands in neuronal events like growth, repair and synaptic transmission.
KW  - glycogen phosphorylase
KW  - neuronal primary culture
KW  - energy metabolism
KW  - nervous system
KW  - phosphorylase isozymes
KW  - brain
KW  - transport
KW  - protein synthesis
KW  - glycolysis
KW  - roles
KW  - synthase
KW  - antibodies
KW  - immunocytochemical analysis
KW  - glycogen synthase
KW  - mRNA localization
KW  - fluorescence in-situ hybridization
Y1  - 2014
U6  - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:bvb:20-opus-116049
SN  - 1471-2202
VL  - 15
IS  - 70
ER  -