Fate selection in the neural crest lineage and its regulation
Author: Akkuratova, Natalia
Date: 2023-09-08
Location: Eva and Georg Klein lecture hall, Solnavägen 9, Karolinska Institutet, Solna
Time: 09.00
Department: Inst för fysiologi och farmakologi / Dept of Physiology and Pharmacology
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Thesis (1.111Mb)
Abstract
The neural crest is a transient embryonic progenitor cell population that generates a diverse
array of cell and tissue types, including cartilage, bone, teeth, soft connective and adipose
tissues, peripheral sensory and autonomic neurons, myelinating and non-myelinating Schwann
cells, melanocytes, cardiac outflow tract, adrenal medulla and other derivatives. Neural crest
cells start as neuroepithelial cells forming at the border of neural and non-neural ectoderm in a
vertebrate embryo. After delaminating at the time of the early neural tube closure, they migrate
towards their final destinations in the body while undergoing major changes of their
transcriptional states during fate selection and differentiation processes. Changes in gene
regulatory networks controlling neural crest states direct neural crest development. Sets of
interacting molecular signaling pathways, transcriptional factors, epigenetic states and
downstream effector programs confer features like multipotency, multilineage differentiation
and directed migratory capacity of the neural crest. The main goal of this doctoral thesis was
to shed light on how neural crest cells make their fate choices during migration, and more
specifically, how the neural crest-derived Schwann cell precursors contribute to
neuroendocrine chromaffin cells and sympathetic neurons in the body. I also explored the
avenues of how the process of healthy transition from nerve-associated Schwann cell
precursors into chromaffin neuroendocrine cells and sympathoblasts might influence the
formation of embryonic and early pediatric malignancies, such as neuroblastoma and other
neuroendocrine tumors, using one of the most efficient approaches nowadays – single cell
transcriptomics.
In paper I, we followed the development of the adrenal medulla from the embryonic to postnatal stages and generated a new single cell transcriptomics atlas of chromaffin and Schwann cell development. We discovered that Schwann cell precursors show high microheterogeneity corresponding to early biases towards either Schwann or chromaffin terminal fates. Moreover, we found and distinguished previously unrecognized states/clusters of developing chromaffin cells, considering that some subclusters might have unique developmental roles.
In paper II, we analyzed the difference in development of murine and human sympathoadrenal and aorta-gonad-mesonephros anlagens to find out human-specific aspects of human development, which might be a key to understanding the origin of neuroblastoma. We found cell state transitions between intra-adrenal sympathoblasts and immature chromaffin cells, showing that in human and mice the transitions happen in various ways, although chromaffin cells and specific sympathoblasts in both species are derivatives of Schwann cell precursors. In humans, the process of recruitment of Schwann cell precursors from the nerves and transition into sympatho-adrenal fates in large intra-adrenal ganglia-like structures continues for weeks, which creates a potential long-lasting reservoir of cells potentially giving rise to neuroblastoma.
In paper III, we focused on the generation of the first single cell transcriptomics and spatial atlas of migrating neural crest cells in murine embryos to understand the hierarchy of fate choice via advanced trajectory analysis and obtaining insights from specific investigation of cell populations at and prior to bifurcation points in the embeddings of transcriptional states.
We discovered the hierarchy of cell fate choices, starting from a subdivision of sensory and sympatho-adrenal fates. This approach also helped us to pinpoint and validate the key difference in the fate selection dynamics in skeletogenic cranial and non-skeletogenic trunk neural crest.
Altogether, my studies provided new insights into fate selection machinery during neural crest and Schwann cell precursor development into downstream cell populations, more specifically, into diverse cells building adrenal medulla and Organ of Zuckerkandl, which are entirely responsible for production and release of adrenaline and noradrenaline in our body.
In paper I, we followed the development of the adrenal medulla from the embryonic to postnatal stages and generated a new single cell transcriptomics atlas of chromaffin and Schwann cell development. We discovered that Schwann cell precursors show high microheterogeneity corresponding to early biases towards either Schwann or chromaffin terminal fates. Moreover, we found and distinguished previously unrecognized states/clusters of developing chromaffin cells, considering that some subclusters might have unique developmental roles.
In paper II, we analyzed the difference in development of murine and human sympathoadrenal and aorta-gonad-mesonephros anlagens to find out human-specific aspects of human development, which might be a key to understanding the origin of neuroblastoma. We found cell state transitions between intra-adrenal sympathoblasts and immature chromaffin cells, showing that in human and mice the transitions happen in various ways, although chromaffin cells and specific sympathoblasts in both species are derivatives of Schwann cell precursors. In humans, the process of recruitment of Schwann cell precursors from the nerves and transition into sympatho-adrenal fates in large intra-adrenal ganglia-like structures continues for weeks, which creates a potential long-lasting reservoir of cells potentially giving rise to neuroblastoma.
In paper III, we focused on the generation of the first single cell transcriptomics and spatial atlas of migrating neural crest cells in murine embryos to understand the hierarchy of fate choice via advanced trajectory analysis and obtaining insights from specific investigation of cell populations at and prior to bifurcation points in the embeddings of transcriptional states.
We discovered the hierarchy of cell fate choices, starting from a subdivision of sensory and sympatho-adrenal fates. This approach also helped us to pinpoint and validate the key difference in the fate selection dynamics in skeletogenic cranial and non-skeletogenic trunk neural crest.
Altogether, my studies provided new insights into fate selection machinery during neural crest and Schwann cell precursor development into downstream cell populations, more specifically, into diverse cells building adrenal medulla and Organ of Zuckerkandl, which are entirely responsible for production and release of adrenaline and noradrenaline in our body.
List of papers:
I. N. Akkuratova*, L. Faure*, P. Kameneva, M.E. Kastriti, I. Adameyko. Developmental heterogeneity of embryonic neuroendocrine chromaffin cells and their maturation dynamics. Frontiers in endocrinology. 2022 Sep 27; 27;13:1020000. *equal contribution
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II. P. K ameneva, A.V. Artemov, M.E. Kastriti, L. Faure, T.K. Olsen, J. Otte, A. Erickson, B. Semsch, E. R. Andersson, M. Ratz, J. Frisén, A.S. Tischler, R.R. de Krijger, T. Bouderlique, N. Akkuratova, M. Vorontsova, O. Gusev, K. Fried, E. Sundström, S. Mei, P. Kogner, N. Baryawno, P.V. Kharchenko, I. Adameyko. (2021). Single-cell transcriptomics of human embryos identifies multiple sympathoblast lineages with potential implications for neuroblastoma origin. Nature Genetics. 2021 Apr 8; 53, 694–706.
Fulltext (DOI)
Pubmed
View record in Web of Science®
III. R. S oldatov, M. Kaucka, M.E. Kastriti, J. Petersen, T. Chontorotzea, L. Englmaier, N. Akkuratova, Y. Yang, M. Häring, V. Dyachuk, C. Bock, M. Farlik, M.L. Piacentino, F. Boismoreau, M.M. Hilscher, C. Yokota, X. Qian, M. Nilsson, M.E. Bronner, L. Croci, W. Hsiao, D.A. Guertin, JF Brunet, G.G. Consalez, P. Ernfors, K. Fried, P.V. Kharchenko, Igor Adameyko. (2019). Spatiotemporal structure of cell fate decisions in murine neural crest. Science. 2019 Jun 7; 364(6444):eaas9536.
Fulltext (DOI)
Pubmed
View record in Web of Science®
I. N. Akkuratova*, L. Faure*, P. Kameneva, M.E. Kastriti, I. Adameyko. Developmental heterogeneity of embryonic neuroendocrine chromaffin cells and their maturation dynamics. Frontiers in endocrinology. 2022 Sep 27; 27;13:1020000. *equal contribution
Fulltext (DOI)
Pubmed
View record in Web of Science®
II. P. K ameneva, A.V. Artemov, M.E. Kastriti, L. Faure, T.K. Olsen, J. Otte, A. Erickson, B. Semsch, E. R. Andersson, M. Ratz, J. Frisén, A.S. Tischler, R.R. de Krijger, T. Bouderlique, N. Akkuratova, M. Vorontsova, O. Gusev, K. Fried, E. Sundström, S. Mei, P. Kogner, N. Baryawno, P.V. Kharchenko, I. Adameyko. (2021). Single-cell transcriptomics of human embryos identifies multiple sympathoblast lineages with potential implications for neuroblastoma origin. Nature Genetics. 2021 Apr 8; 53, 694–706.
Fulltext (DOI)
Pubmed
View record in Web of Science®
III. R. S oldatov, M. Kaucka, M.E. Kastriti, J. Petersen, T. Chontorotzea, L. Englmaier, N. Akkuratova, Y. Yang, M. Häring, V. Dyachuk, C. Bock, M. Farlik, M.L. Piacentino, F. Boismoreau, M.M. Hilscher, C. Yokota, X. Qian, M. Nilsson, M.E. Bronner, L. Croci, W. Hsiao, D.A. Guertin, JF Brunet, G.G. Consalez, P. Ernfors, K. Fried, P.V. Kharchenko, Igor Adameyko. (2019). Spatiotemporal structure of cell fate decisions in murine neural crest. Science. 2019 Jun 7; 364(6444):eaas9536.
Fulltext (DOI)
Pubmed
View record in Web of Science®
Institution: Karolinska Institutet
Supervisor: Adameyko, Igor
Co-supervisor: Chagin, Andrei; Schlisio, Susanne; Kastriti, Maria Eleni
Issue date: 2023-08-16
Rights:
Publication year: 2023
ISBN: 978-91-8017-087-1
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