Defining unique molecular markers of upper motor neurons in MND

Motor neuron disease (MND) is caused by selective degeneration of both upper and lower motor neurons.

Lower motor neurons (LMNs), such as spinal motor neurons, are straightforward to anatomically identify given the simple cytoarchitecture of the spinal cord and their expression of selective markers e.g. cholinergic genes.  However, upper motor neurons (UMNs) reside in layer V of the motor cortex and are virtually indistinguishable from other pyramidal neurons, as they lack selective or specific cell markers.  UMNs are therefore difficult to identify and define which creates a major roadblock in MND research.


  • Define molecular factors and therefore markers unique to UMNs for the first time

UMNs will be isolated using tissue microdissociation and FACS, then analysed for enrichment compared to other cortical neurons and bulk tissue.  Once confirmed, RNA will be extracted from purified UMNs and subject to RNAseq for global gene expression, bioinformatic and pathway analyses to uncover molecular factors unique to UMNs.

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