RESEARCH IN THE WILDE LAB

How do different actin isoforms function in Cell Division?

There are 6 actin isoforms in mammals. Whilst they are over
95%identical we discovered they are differentially localized
within dividing cells and are required for different cytokinetic
events.Current projects are focused on how these difference
actin isoforms networks are generated and what is their
molecular requirement during cytokinesis.
References: Chen et al 2017, Chen et al 2020

Molecular Regulation of Abscission

Abscission is the final stage of cell division when the 2
new cells physically separate. Exquisite regulation of this step
is required to prevent aneuploidy and genome instability. Our
work focuses on a cyclin dependent pathway that regulates
the assembly and function of a filamentous network of ESCRT
proteins that are required to separate the cells
References: Renshaw et al 2019

Mechansims Driving Intercellular-bridge Assembly

Abscission occurs in a long narrow tube, the intercellular bridge,
that is the last connection between the 2 newly forming cells.
Failure to form the bridge disrupts cytokinesis. Our work focuses
on the role of an anillin-septin filamentous array required to
generate the intercellular bridge
References: Renshaw et al 2014, Panagiotou, et al 2022

Regulation of Furrow Ingression

The first step in the physical act of cell division is the assembly
of a contractile ring to ingress a furrow of plasma membrane
between the segregating chromosomes. If this critical step is
disrupted, cell division fails. Our work focuses on the
scaffolding molecule anillin that acts as a central nexus
between the different pathways regulating furrow ingression,
including the GTPase RhoA, microtubules and actin.
References: Renshaw et al 2014, Chen et al 2017, Panagiotou, 2022

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