Author

Helen Marshall

Simons Initiative for the Developing Brain

Listed by name: these papers carry no ORCID for this author, so different people with the same name may be mixed together.

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Developmental Biology· 1

Signature Assays, Organisms & Methods

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Research Focus:cell type annotation· 1 Approach:experimental assay· 1 Organism:human· 1

Frequent Co-Authors

Danilo NegroiD· 1 shared David Jonathan PriceiD· 1 shared John O. MasoniD· 1 shared Lusi Zhao· 1 shared Mariana BeltrániD· 1 shared Megan BrowniD· 1 shared Michela BarbatoiD· 1 shared Neil Cowan HendersoniD· 1 shared

Activity by Year

2026-2026 · peak 1/yr

Co-Author Collaboration Network

10 top collaborators · 45 mutual co-author links

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1 shared paperDevelopmental Biology

Danilo NegroORCID

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1 paper

Recent·Most cited

Loss of PAX6 alters the excitatory/inhibitory neuronal ratio in human cerebral organoids

Wai Kit Chan, Shibla Abdulla, Lusi Zhao, Danilo Negro, Victoria M Munro, Sophie R. Thomson, Helen Marshall, Zrinko Kozić, Megan Brown, Michela Barbato, Mariana Beltrán, Neil Cowan Henderson, David Jonathan Price, John O. Mason

This study shows that PAX6 deficiency in human cerebral organoids leads to an increased inhibitory neuron population and altered excitatory/inhibitory ratio due to dysregulated PTN-PTPRZ1 signaling.

Development · Oct 26, 2026Peer-reviewedDevelopmental Biology