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Primary Cultures of Pure Embryonic Dorsal Root Ganglia Sensory Neurons as a New Cellular Model for Friedreich's Ataxia.

07:00 EST 1st January 2020 | BioPortfolio

Summary of "Primary Cultures of Pure Embryonic Dorsal Root Ganglia Sensory Neurons as a New Cellular Model for Friedreich's Ataxia."

Peripheral neuropathies can have various origins, from genetic to acquired causes, and affect altogether a large group of people in the world. Current available therapies aim at helping the disease symptoms but not to correct or stop the development of the disease. Primary neuronal cultures represent an essential tool in the study of events related to peripheral neuropathies as they allow to isolate the affected cell types, often originating in complex tissues in which they account for only a few percentage of cells. They provide a powerful system to identifying or testing compounds with potential therapeutic effect in the treatment of those diseases. Friedreich's ataxia is an autosomal recessive neurodegenerative disorder, which is characterized by a progressive spinocerebellar and sensory ataxia. Proprioceptive neurons of the dorsal root ganglia (DRG) are the primary affected cells. The disease is triggered by a mutation in the gene FXN which leads to a reduction of the frataxin protein. In order to study the neurophysiopathology of the disease at the cellular and molecular levels, we have established a model of primary cultures of DRG sensory neurons in which we induce the loss of the frataxin protein. With such a model we can alleviate the issues related to the complexity of DRG tissues and low amount of sensory neuron material in adult mouse. Hereby, we provide a protocol of detailed and optimized methods to obtain high yield of healthy mouse DRG sensory neuron in culture.

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This article was published in the following journal.

Name: Methods in molecular biology (Clifton, N.J.)
ISSN: 1940-6029
Pages: 241-253

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Medical and Biotech [MESH] Definitions

Sensory ganglia located on the dorsal spinal roots within the vertebral column. The spinal ganglion cells are pseudounipolar. The single primary branch bifurcates sending a peripheral process to carry sensory information from the periphery and a central branch which relays that information to the spinal cord or brain.

The paired bundles of nerve fibers entering and leaving the spinal cord at each segment. The dorsal and ventral nerve roots join to form the mixed segmental spinal nerves. The dorsal roots are generally afferent, formed by the central projections of the spinal (dorsal root) ganglia sensory cells, and the ventral roots efferent, comprising the axons of spinal motor and autonomic preganglionic neurons. There are, however, some exceptions to this afferent/efferent rule.

Clusters of neurons in the somatic peripheral nervous system which contain the cell bodies of sensory nerve axons. Sensory ganglia may also have intrinsic interneurons and non-neuronal supporting cells.

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A voltage-gated sodium channel subtype found in the neurons of the NERVOUS SYSTEM and DORSAL ROOT GANGLIA. It may play a role in the generation of heat and mechanical pain hypersensitivity.

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