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

Embryonic stem cells (ESCs) hold immense promise due to their pluripotency—the ability to differentiate into any cell type in the body—making them a central focus in developmental biology and therapeutic research. At the heart of maintaining this delicate pluripotent state lies a network of epigenetic regulators, among which DNA methyltransferase 3-like protein (Dnmt3L) plays a pivotal role. Although Dnmt3L itself lacks methyltransferase activity, it acts as a crucial cofactor for de novo DNA methyltransferases, influencing DNA methylation patterns essential for early development.

The team led by Nam, Kwon, and Im embarked on an exhaustive investigation to identify and characterize acetylation sites on Dnmt3L, hypothesizing that these post-translational modifications could significantly influence the protein’s stability and functionality within ESCs. By leveraging state-of-the-art proteomic approaches and high-resolution mass spectrometry, the researchers pinpointed multiple lysine residues on Dnmt3L subject to acetylation. These modifications, they revealed, are not just random occurrences but orchestrated molecular switches dictating the protein’s half-life and its capability to guide differentiation.

Mechanistically, the acetylation of Dnmt3L was found to protect it from proteasomal degradation, thereby stabilizing its presence within embryonic stem cells. This protective acetylation ensures that Dnmt3L maintains its role in shaping the epigenome during critical differentiation windows. In contrast, the lack of acetylation flags the protein for ubiquitination and subsequent breakdown, truncating its functional lifespan and impairing the ESC’s differentiation potential. These findings underscore a delicate balance in post-translational modifications that maintain cellular homeostasis and define developmental trajectories.

Moreover, functional assays detailed in the study demonstrated that manipulating the acetylation state of Dnmt3L could directly impact the potency of ESC differentiation. Cells expressing acetylation-deficient mutants of Dnmt3L exhibited marked deficiencies in their ability to differentiate into specific lineages, emphasizing that acetylation is indispensable for proper developmental programming. This tight regulation at the protein modification level enriches the existing paradigm of epigenetic control, highlighting acetylation as a key determinant of stem cell fate decisions.

The implications of this research extend far beyond developmental biology and into the realm of regenerative medicine. Understanding the precise molecular regulation of Dnmt3L opens new doors to optimizing stem cell-based therapies. By harnessing the acetylation machinery, scientists may develop strategies to enhance stem cell stability and differentiation capacity, potentially improving outcomes in cell replacement therapies for degenerative diseases, injury repair, and congenital defects.

From a broader epigenetic perspective, this study enriches our knowledge of how protein modifications intersect with DNA methylation to orchestrate gene expression programs. The interplay between acetylation and ubiquitination of Dnmt3L exemplifies the intricate regulatory crosstalk that governs protein turnover, a fundamental process influencing cell identity and function. This nuanced understanding may guide future research toward identifying similar modifications in other epigenetic regulators, further unraveling the complexity of cellular reprogramming and lineage commitment.

The research also raises fascinating questions about the temporal dynamics of acetylation during embryogenesis. How is the acetylation status of Dnmt3L modulated in response to developmental cues and environmental stimuli? Are there specific acetyltransferases or deacetylases targeting Dnmt3L that act as molecular switches during distinct differentiation phases? Addressing these questions will be crucial for deciphering the full spectrum of Dnmt3L’s role in development and for translating these insights into therapeutic contexts.

Technologically, the study exemplifies the power of integrating proteomics, molecular biology, and stem cell biology to unravel complex regulatory networks. The identification of acetylation sites relied on sensitive mass spectrometric techniques capable of detecting subtle post-translational modifications, while functional validation required precise genetic editing tools to create acetylation-deficient mutants. Such multidisciplinary approaches represent the future of epigenetic research, yielding detailed mechanistic insights with direct translational potential.

Furthermore, this discovery hints at the possibility of pharmacologically targeting Dnmt3L acetylation to modulate stem cell behavior. Small molecules that enhance or inhibit acetylation could serve as potent modulators of stem cell fate, expanding the toolkit available to stem cell biologists and clinicians. Such agents would need to be designed with specificity and precision to avoid off-target effects, given the complex interplay of acetyltransferases across multiple cellular proteins.

In the context of disease, aberrations in Dnmt3L function have been implicated in developmental disorders and cancers where epigenetic dysregulation plays a central role. This new understanding of acetylation-mediated regulation may illuminate paths to correct such epigenetic abnormalities. Restoring proper acetylation patterns could stabilize Dnmt3L function, reinstating normal epigenetic landscapes and halting disease progression.

As this research enters the scientific spotlight, it inevitably invites a new wave of studies aimed at further dissecting epigenetic modifications of Dnmt3L and related proteins. Questions about their interaction networks, the upstream signaling pathways modulating acetylation, and their roles in adult stem cells and tissue homeostasis will no doubt attract intense investigation. This foundational work sets a precedent for uncovering how finely-tuned molecular modifications dictate cell fate decisions with profound biological and clinical consequences.

In conclusion, the identification of acetylation sites on Dnmt3L and their role in regulating protein stability and differentiation potency in embryonic stem cells mark a transformative leap in stem cell and epigenetic research. By unraveling these molecular details, the study not only enhances basic biological understanding but also fuels the translation of stem cell therapies, promising more effective and controlled approaches to regenerative medicine. The elegant orchestration of acetylation-dependent stability exemplifies the exquisite molecular symphony underlying life’s earliest developmental choices.

Subject of Research: Regulation of Dnmt3L acetylation and its impact on protein stability and differentiation potency in embryonic stem cells.

Article Title: Uncovering the acetylation sites of Dnmt3L that regulate protein stability and differentiation potency in embryonic stem cells.

Article References:
Nam, Y.J., Kwon, H., Im, H.J. et al. Uncovering the acetylation sites of Dnmt3L that regulate protein stability and differentiation potency in embryonic stem cells. Exp Mol Med (2026). https://doi.org/10.1038/s12276-026-01655-w

Image Credits: AI Generated

DOI: 10.1038/s12276-026-01655-w (Published on 04 March 2026)