The research team employed sophisticated CRISPR barcoding techniques in murine models coupled with mosaic variant lineage tracing in humans to unpick the complexities of neural crest progenitor dynamics. These approaches allowed for an unprecedented resolution of clonal relationships among neural crest derivatives. Crucially, the findings revealed robust bilateral clonal dispersal along the rostrocaudal axis—meaning that progenitor cells proliferate and colonize tissues distributed along the length of the body axis symmetrically on both sides. This long-range dispersal challenges previous assumptions of highly localized clonal territories in neural crest-derived structures.

Surprisingly, despite this extensive rostrocaudal migration, there was a strikingly limited overlap in the clonal origins of sensory and sympathetic lineages. This suggests that rudimentary fate restrictions exist early during neural crest differentiation, confining descendant cells to either sensory or sympathetic pathways rather than retaining broad multipotency. The lineage divergence appears to be not a product of stochastic fate acquisition post-delamination, but rather a preordained bias tightly linked to their embryonic origin within the neural tube.

Complementing the genetic lineage tracing, computational modeling of mosaic variants supported a model wherein a majority of neural crest cells are already fate-restricted before delamination occurs. This insight addresses a major controversy within developmental biology, where the extent of in vivo multipotency of delaminated neural crest cells has been hotly contested. Rather than a homogeneous pool of multipotent cells migrating out and choosing their fate in a permissive environment, the evidence now strongly favors a pre-specified cohort primed to contribute selectively to either sensory or sympathetic ganglia.

Furthermore, dynamic live imaging experiments performed on quail embryos added a novel mechanistic layer to this developmental narrative. These studies revealed that fibroblast growth factor (FGF) signaling plays a central role in driving rostrocaudal dispersion of the neural crest progenitors across the embryonic body axis. This FGF-dependent migration underscores a tightly regulated biochemical environment that orchestrates the spatial distribution of neural crest cells, highlighting how extrinsic cues are integral in shaping the eventual anatomical organization of the peripheral nervous system.

Collectively, these findings redefine the developmental architecture of the neural crest, emphasizing that fate predisposition is fundamentally established within the confines of the neural tube. Only a minor subpopulation of delaminated neural crest cells appears to retain genuine multipotency, capable of giving rise to both sensory and sympathetic derivatives. This nuanced understanding revises longstanding models that assumed a broad multipotent potential maintained post-delamination and accretion of extrinsic fate cues as the principal determinant.

Importantly, this research bridges insights across species by integrating data from both mouse and human models, thereby enhancing the translational relevance of the results. The congruent patterns observed in human mosaic variant analyses point to deeply conserved mechanisms in neural crest biology, offering potential avenues for exploring developmental disorders and regenerative therapies centered on neural crest derivatives.

The revelation of robust bilateral clonal spread raises intriguing questions about the temporal window and regulatory inputs governing neural crest progenitor proliferation and dispersion. It also compels a reassessment of how early molecular cues map onto spatial lineage segregation, possibly informing new strategies to manipulate neural crest cells in regenerative medicine and disease modeling contexts.

Moreover, the methodological innovation exemplified by the dual application of CRISPR barcoding and mosaic variant tracing represents a significant leap forward in lineage tracing technologies. The ability to trace progenitor-descendant relationships at such high resolution and with bilateral symmetry considerations promises to catalyze a new era of developmental biology research.

This study not only refines the fundamental biological narrative surrounding neural crest fate specification but also sets the stage for further inquiries into how signaling pathways like FGF orchestrate complex migratory behaviors and tissue integration. Such work will likely illuminate novel target points for therapeutic intervention in neurocristopathies and peripheral neuropathies linked to aberrant neural crest development.

In summary, this compelling research presents a sophisticated model integrating fate restriction within the neural tube, expansive rostrocaudal clonal migration, and FGF-driven dispersal. Collectively, these mechanisms choreograph the developmental assembly of sensory and sympathetic ganglia from the neural crest. This integrated perspective marks a major milestone, enhancing our holistic appreciation of vertebrate embryogenesis and peripheral nervous system formation.

Subject of Research: Neural crest cell fate determination and migration in vertebrate sensory and sympathetic ganglion development

Article Title: Developmental organization of sensory and sympathetic ganglia

Article References:
Vong, K.I., Alvarez, Y.D., Zhang, Q. et al. Developmental organization of sensory and sympathetic ganglia. Nature (2026). https://doi.org/10.1038/s41586-026-10313-0

Image Credits: AI Generated

DOI: https://doi.org/10.1038/s41586-026-10313-0

Keywords: neural crest, lineage tracing, CRISPR barcoding, mosaic variants, sensory ganglia, sympathetic ganglia, neuronal fate restriction, fibroblast growth factor, embryonic development, rostrocaudal migration

Carole LaBonne, the Erastus Otis Haven Professor of Molecular Biosciences at Northwestern’s Weinberg College of Arts and Sciences, has emerged as a pioneering figure in developmental biology. Her election to the AAAS Fellowship specifically recognizes her groundbreaking work on gene regulatory networks essential for cell fate determination and the developmental pathways of the neural crest in vertebrates. LaBonne’s research delves into the intricate molecular dialogues that govern embryonic stem cells, especially pluripotent cells, which have the capacity to differentiate into diverse tissue types critical to vertebrate anatomy.

Central to LaBonne’s research is the study of neural crest cells— a multipotent, migratory cell population unique to vertebrates. These cells are pivotal in forming crucial structures, including the craniofacial skeleton, peripheral nervous system, cardiac tissues, and pigmentation patterns. By utilizing model organisms such as Xenopus (African clawed frog) and lampreys, her lab interrogates the evolutionary origins and developmental mechanisms of these stem cells. This approach not only elucidates fundamental biological processes but also advances our understanding of evolution and morphogenesis in vertebrate species, including humans.

Delving deeper, LaBonne’s laboratory unravels the complex gene regulatory networks— ensembles of interacting genes, transcription factors, and signaling pathways— that orchestrate the emergence and differentiation of neural crest stem cells. The identification and functional characterization of these networks offer insights into how dynamic gene expression drives cell fate decisions during early embryogenesis. This knowledge has broad implications, shedding light on congenital malformations, tumorigenesis, and potential avenues for regenerative medicine by manipulating stem cell populations.

Importantly, LaBonne’s contributions extend beyond basic developmental biology. Her work provides an invaluable framework for understanding pathophysiological conditions such as neurocristopathies—disorders arising from aberrant neural crest development. Furthermore, the parallels between neural crest stem cell behavior and cancer metastasis present promising intersections for therapeutic interventions. Through her innovative research, she bridges fundamental biology and clinical applications, reinforcing the significance of developmental mechanisms in health and disease.

Parallel to LaBonne’s achievements, Matthew Goldrick, a professor of linguistics and director of the cognitive science program at Northwestern’s Weinberg College, achieves recognition as an AAAS Fellow for his influential contributions to language science. His research primarily focuses on the neural and cognitive mechanisms driving speech production, processing, and the computational modeling that elucidates the intricate workings of linguistic function.

Goldrick employs an interdisciplinary methodology incorporating behavioral experiments, computational modeling, and sophisticated analyses of speech acoustics. His scientific pursuits leverage artificial intelligence to dissect the acoustic features of spoken language, elucidating how complex speech patterns are generated and recognized by the human brain. These studies have profound implications for understanding not only normal language function but also impairments associated with psychiatric conditions like major depressive disorder, where speech production anomalies may serve as biomarkers.

Expanding on multilingual and monolingual speakers, Goldrick’s theoretical frameworks elucidate how linguistic knowledge is represented and processed in the brain. His work dissects mechanisms such as speech planning, error correction, and the dynamic interplay between semantic, syntactic, and phonological systems. This research is vital for advancing artificial speech recognition technologies and developing therapeutic strategies for language disorders.

Goldrick’s accomplishments extend into community building and fostering collaboration across disciplines, underpinning his commitment to advancing cognitive science holistically. His accolades include the prestigious Jeffrey L. Elman Prize from the Cognitive Science Society, reflecting his dual contributions to scientific innovation and nurturing scholarly networks. As a co-founder of initiatives like Reviewer Zero and Bilingualism Matters Chicago, he promotes equity and community engagement within the scientific sphere.

Northwestern University’s vibrant interdisciplinary environment bolsters the work of both LaBonne and Goldrick. Their affiliations with a range of institutional bodies—such as the department of psychology, Interdepartmental Neuroscience Program (NUIN), Institute for Innovations in Developmental Science, and Institute on Complex Systems—create fertile ground for pioneering research. This ecosystem fosters cross-pollination of ideas between molecular biology, neuroscience, linguistics, and computational science, exemplifying the university’s commitment to addressing complex scientific challenges.

The distinguished career trajectory of Carole LaBonne includes her service as chair of the Molecular Biosciences department from 2017 to 2023 and her tenure as president of the Society for Developmental Biology. Her numerous accolades— including the Ann McClaren Memorial Award and the American Cancer Society Scholar Award— testify to her profound impact in both research and leadership within developmental biology. Similarly, Matthew Goldrick’s extensive grant support from the National Science Foundation and National Institutes of Health underscores the scientific merit and societal relevance of his investigations.

Together, LaBonne and Goldrick embody the spirit of research excellence, bridging fundamental science with practical applications that address pressing biomedical and cognitive challenges. Their recognition as AAAS Fellows not only honors their individual achievements but also highlights the essential role of multidisciplinary research in driving scientific advancement. As they continue to explore the frontiers of developmental biology and language science, their work promises to deepen understanding of the biological and cognitive foundations of life and communication.

This AAAS Fellowship distinction arrives at a critical juncture, underscoring the indispensable nature of basic science amid evolving societal and research landscapes. LaBonne reflects on this honor with a sense of duty and optimism, emphasizing the importance of foundational science even as funding and operational conditions grow increasingly challenging. Both scholars’ commitments exemplify the potential of dedicated inquiry to transform scientific knowledge into benefits for human health and cognition.

The upcoming AAAS Fellows Forum provides a testament to the collective achievements of a diverse scientific community spanning disciplines and continents. As LaBonne and Goldrick join this prestigious cohort, their work continues to inspire future generations of researchers and affirms the enduring power of curiosity-driven science to illuminate the complexities of biological systems and human language.

Subject of Research: Developmental biology, neural crest cell gene regulatory networks, cognitive science of language, speech production and processing, computational modeling of linguistic mechanisms

Article Title: Northwestern University Faculty Carole LaBonne and Matthew Goldrick Elected 2025 AAAS Fellows for Breakthrough Contributions in Developmental Biology and Language Science

News Publication Date: 2024

Web References:

• Carole LaBonne: https://molbiosci.northwestern.edu/people/core-faculty/carole-labonne.html
• Matthew Goldrick: https://faculty.wcas.northwestern.edu/matt-goldrick/#!/
• Weinberg College of Arts and Sciences: https://weinberg.northwestern.edu/

Image Credits: Courtesy of Northwestern University

Keywords: Molecular biology, Developmental biology, Neural crest cells, Gene regulatory networks, Stem cells, Evolution, Cognitive neuroscience, Language science, Speech production, Speech processing, Computational modeling, Artificial intelligence, Multilingualism