Dr. Brian Ciruna

Biography

Brian Ciruna's research program combines experimental embryology and powerful genetic live imaging technologies using zebrafish to understand the molecular genetic mechanisms that orchestrate normal development, particularly in relation to brain and spinal cord formation and defects that lead to paediatric diseases. His current focus is to identify the underlying causes of adolescent idiopathic scoliosis (AIS), a prevalent paediatric disorder characterized by a rotational deformity of the spine. Unlike congenital and neuromuscular forms of scoliosis, which arise from vertebral anomalies or deficiencies, AIS develops in the absence of clear physiological defects. Interestingly, about 80% of human scoliosis cases are classified as 'idiopathic,' with 4% of children developing AIS, and 1 in 10 patients (predominantly female) experiencing severe curve progression requiring physical or surgical intervention. The pioneering work of Ciruna's lab has generated and characterized zebrafish models for AIS, offering fundamental new insights into the disease's pathogenesis. This research has unexpectedly implicated ancient and enigmatic central nervous system organ systems, particularly irregularities in cerebrospinal fluid (CSF) homeostasis, in abnormal spinal development. His findings show that downstream CSF defects activate pro-inflammatory and oxidative stress signals in the CNS, ultimately driving spinal curvature. Additionally, immuno-modulating therapies have significantly reduced the incidence and severity of scoliosis in zebrafish models. Ciruna and his team continue to define the specific molecular biological mechanisms underlying spinal curve progression and explore potential links to neuroinflammation in human AIS while identifying novel therapeutic intervention targets.

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