Event Details

Wednesday, 13 March 2019 - Wednesday, 13 March 2019
11:00 am - 12:00 pm
QBI Level 7 Auditorium
UQ Location:
Queensland Brain Institute (St Lucia)
Event category(s):

Event Contact

Ms Deirdre Wilson
3346 6300
Org. Unit:
Queensland Brain Institute

Event Description

Full Description:
Dr Laura Gumy, School of Biomedical Sciences, University of Otago, New Zealand

Title: 'MAP2-dependent regulation of axonal transport'

Intracellular trafficking of cellular material is essential to maintain cell structure and function. This involves the movement of cellular cargoes by motor proteins that move along cytoskeletal microtubules. Such trafficking is especially critical for neurons because the extreme length of axons (up to 1 metre in humans) demands that cargoes originating in the cell body travel very long distances to reach their target destinations. Despite the importance of long-range transport to proper cell functioning, knowledge on the basic mechanisms regulating the distribution of cargoes in axons over long distances are poorly understood. To date, the bottleneck limiting advances in this area have been due to technical challenges in imaging of intracellular trafficking over long distances as evidenced by a paucity of literature in the field.

We recently developed an imaging method to visualise long distance transport in mammalian axons. We found that secretory vesicle motility along the axon depends on the switch between the activities of different motor proteins (KIF5 and KIF1) by a microtubule associated protein (MAP2). In addition to deciphering the fundamental mechanisms of long-range transport processes in neurons, we also show that modulation of intracellular transport pathways can promote axon regeneration. Given the ubiquitous presence of many microtubule associated proteins in axons, we propose the existence of a “MAP code” where microtubule associated proteins provide signals to coordinate specific transport routes.

Directions to UQ

Google Map:
To St Lucia Campus, UQ Ipswich, and UQ Gatton.

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