Retraction of rod-like mitochondria during microtubule-dependent transport

Bioscience Reports
María Cecilia De RossiLuciana Bruno

Abstract

Molecular motors play relevant roles on the regulation of mitochondria size and shape, essential properties for the cell homeostasis. In this work, we tracked single rod-shaped mitochondria with nanometer precision to explore the performance of microtubule motor teams during processive anterograde and retrograde transport. We analyzed simultaneously the organelle size and verified that mitochondria retracted during retrograde transport with their leading tip moving slower in comparison with the rear tip. In contrast, mitochondria preserved their size during anterograde runs indicating a different performance of plus-end directed teams. These results were interpreted considering the different performance of dynein and kinesin teams and provide valuable information on the collective action of motors during mitochondria transport.

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Citations

Jul 22, 2020·Physical Review. E·A B Fernández CasafuzL Bruno
Dec 1, 2021·Journal of Physics. Condensed Matter : an Institute of Physics Journal·Agustina B Fernández CasafuzLuciana Bruno

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