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  1. Article ; Online: Human cerebral organoids - a new tool for clinical neurology research.

    Eichmüller, Oliver L / Knoblich, Juergen A

    Nature reviews. Neurology

    2022  Volume 18, Issue 11, Page(s) 661–680

    Abstract: The current understanding of neurological diseases is derived mostly from direct analysis of patients and from animal models of disease. However, most patient studies do not capture the earliest stages of disease development and offer limited ... ...

    Abstract The current understanding of neurological diseases is derived mostly from direct analysis of patients and from animal models of disease. However, most patient studies do not capture the earliest stages of disease development and offer limited opportunities for experimental intervention, so rarely yield complete mechanistic insights. The use of animal models relies on evolutionary conservation of pathways involved in disease and is limited by an inability to recreate human-specific processes. In vitro models that are derived from human pluripotent stem cells cultured in 3D have emerged as a new model system that could bridge the gap between patient studies and animal models. In this Review, we summarize how such organoid models can complement classical approaches to accelerate neurological research. We describe our current understanding of neurodevelopment and how this process differs between humans and other animals, making human-derived models of disease essential. We discuss different methodologies for producing organoids and how organoids can be and have been used to model neurological disorders, including microcephaly, Zika virus infection, Alzheimer disease and other neurodegenerative disorders, and neurodevelopmental diseases, such as Timothy syndrome, Angelman syndrome and tuberous sclerosis. We also discuss the current limitations of organoid models and outline how organoids can be used to revolutionize research into the human brain and neurological diseases.
    MeSH term(s) Animals ; Humans ; Organoids/metabolism ; Brain/metabolism ; Microcephaly ; Neurodegenerative Diseases/metabolism ; Zika Virus Infection ; Zika Virus ; Neurology
    Language English
    Publishing date 2022-10-17
    Publishing country England
    Document type Journal Article ; Review ; Research Support, Non-U.S. Gov't
    ZDB-ID 2491514-2
    ISSN 1759-4766 ; 1759-4758
    ISSN (online) 1759-4766
    ISSN 1759-4758
    DOI 10.1038/s41582-022-00723-9
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  2. Article ; Online: Human organoids: New strategies and methods for analyzing human development and disease.

    Corsini, Nina S / Knoblich, Juergen A

    Cell

    2022  Volume 185, Issue 15, Page(s) 2756–2769

    Abstract: For decades, insight into fundamental principles of human biology and disease has been obtained primarily by experiments in animal models. While this has allowed researchers to understand many human biological processes in great detail, some ... ...

    Abstract For decades, insight into fundamental principles of human biology and disease has been obtained primarily by experiments in animal models. While this has allowed researchers to understand many human biological processes in great detail, some developmental and disease mechanisms have proven difficult to study due to inherent species differences. The advent of organoid technology more than 10 years ago has established laboratory-grown organ tissues as an additional model system to recapitulate human-specific aspects of biology. The use of human 3D organoids, as well as other advances in single-cell technologies, has revealed unprecedented insights into human biology and disease mechanisms, especially those that distinguish humans from other species. This review highlights novel advances in organoid biology with a focus on how organoid technology has generated a better understanding of human-specific processes in development and disease.
    MeSH term(s) Animals ; Humans ; Models, Biological ; Organoids
    Language English
    Publishing date 2022-07-19
    Publishing country United States
    Document type Journal Article ; Review ; Research Support, Non-U.S. Gov't
    ZDB-ID 187009-9
    ISSN 1097-4172 ; 0092-8674
    ISSN (online) 1097-4172
    ISSN 0092-8674
    DOI 10.1016/j.cell.2022.06.051
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  3. Article ; Online: Neutral competition explains the clonal composition of neural organoids.

    Pflug, Florian G / Haendeler, Simon / Esk, Christopher / Lindenhofer, Dominik / Knoblich, Jürgen A / von Haeseler, Arndt

    PLoS computational biology

    2024  Volume 20, Issue 4, Page(s) e1012054

    Abstract: Neural organoids model the development of the human brain and are an indispensable tool for studying neurodevelopment. Whole-organoid lineage tracing has revealed the number of progenies arising from each initial stem cell to be highly diverse, with ... ...

    Abstract Neural organoids model the development of the human brain and are an indispensable tool for studying neurodevelopment. Whole-organoid lineage tracing has revealed the number of progenies arising from each initial stem cell to be highly diverse, with lineage sizes ranging from one to more than 20,000 cells. This high variability exceeds what can be explained by existing stochastic models of corticogenesis and indicates the existence of an additional source of stochasticity. To explain this variability, we introduce the SAN model which distinguishes Symmetrically diving, Asymmetrically dividing, and Non-proliferating cells. In the SAN model, the additional source of stochasticity is the survival time of a lineage's pool of symmetrically dividing cells. These survival times result from neutral competition within the sub-population of all symmetrically dividing cells. We demonstrate that our model explains the experimentally observed variability of lineage sizes and derive the quantitative relationship between survival time and lineage size. We also show that our model implies the existence of a regulatory mechanism which keeps the size of the symmetrically dividing cell population constant. Our results provide quantitative insight into the clonal composition of neural organoids and how it arises. This is relevant for many applications of neural organoids, and similar processes may occur in other developing tissues both in vitro and in vivo.
    MeSH term(s) Organoids/cytology ; Humans ; Cell Lineage/physiology ; Computational Biology ; Neural Stem Cells/cytology ; Neural Stem Cells/physiology ; Stochastic Processes ; Models, Biological ; Neurons/physiology ; Neurons/cytology ; Brain/cytology ; Brain/physiology ; Cell Proliferation/physiology ; Neurogenesis/physiology
    Language English
    Publishing date 2024-04-22
    Publishing country United States
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 2193340-6
    ISSN 1553-7358 ; 1553-734X
    ISSN (online) 1553-7358
    ISSN 1553-734X
    DOI 10.1371/journal.pcbi.1012054
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  4. Article: Human organoids: New strategies and methods for analyzing human development and disease

    Corsini, Nina S. / Knoblich, Juergen A.

    Cell. 2022 July 21, v. 185, no. 15

    2022  

    Abstract: For decades, insight into fundamental principles of human biology and disease has been obtained primarily by experiments in animal models. While this has allowed researchers to understand many human biological processes in great detail, some ... ...

    Abstract For decades, insight into fundamental principles of human biology and disease has been obtained primarily by experiments in animal models. While this has allowed researchers to understand many human biological processes in great detail, some developmental and disease mechanisms have proven difficult to study due to inherent species differences. The advent of organoid technology more than 10 years ago has established laboratory-grown organ tissues as an additional model system to recapitulate human-specific aspects of biology. The use of human 3D organoids, as well as other advances in single-cell technologies, has revealed unprecedented insights into human biology and disease mechanisms, especially those that distinguish humans from other species. This review highlights novel advances in organoid biology with a focus on how organoid technology has generated a better understanding of human-specific processes in development and disease.
    Keywords human development ; humans ; organoids
    Language English
    Dates of publication 2022-0721
    Size p. 2756-2769.
    Publishing place Elsevier Inc.
    Document type Article
    ZDB-ID 187009-9
    ISSN 1097-4172 ; 0092-8674
    ISSN (online) 1097-4172
    ISSN 0092-8674
    DOI 10.1016/j.cell.2022.06.051
    Database NAL-Catalogue (AGRICOLA)

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  5. Article ; Online: Brain organoids: an ensemble of bioassays to investigate human neurodevelopment and disease.

    Sidhaye, Jaydeep / Knoblich, Jürgen A

    Cell death and differentiation

    2020  Volume 28, Issue 1, Page(s) 52–67

    Abstract: Understanding etiology of human neurological and psychiatric diseases is challenging. Genomic changes, protracted development, and histological features unique to human brain development limit the disease aspects that can be investigated using model ... ...

    Abstract Understanding etiology of human neurological and psychiatric diseases is challenging. Genomic changes, protracted development, and histological features unique to human brain development limit the disease aspects that can be investigated using model organisms. Hence, in order to study phenotypes associated with human brain development, function, and disease, it is necessary to use alternative experimental systems that are accessible, ethically justified, and replicate human context. Human pluripotent stem cell (hPSC)-derived brain organoids offer such a system, which recapitulates features of early human neurodevelopment in vitro, including the generation, proliferation, and differentiation of neural progenitors into neurons and glial cells and the complex interactions among the diverse, emergent cell types of the developing brain in three-dimensions (3-D). In recent years, numerous brain organoid protocols and related techniques have been developed to recapitulate aspects of embryonic and fetal brain development in a reproducible and predictable manner. Altogether, these different organoid technologies provide distinct bioassays to unravel novel, disease-associated phenotypes and mechanisms. In this review, we summarize how the diverse brain organoid methods can be utilized to enhance our understanding of brain disorders. FACTS: Brain organoids offer an in vitro approach to study aspects of human brain development and disease. Diverse brain organoid techniques offer bioassays to investigate new phenotypes associated with human brain disorders that are difficult to study in monolayer cultures. Brain organoids have been particularly useful to study phenomena and diseases associated with neural progenitor morphology, survival, proliferation, and differentiation. OPEN QUESTION: Future brain organoid research needs to aim at later stages of neurodevelopment, linked with neuronal activity and connections, to unravel further disease-associated phenotypes. Continued improvement of existing organoid protocols is required to generate standardized methods that recapitulate in vivo-like spatial diversity and complexity.
    MeSH term(s) Animals ; Biological Assay ; Brain/cytology ; Cell Culture Techniques, Three Dimensional ; Cell Differentiation/genetics ; Fetus/cytology ; Humans ; Neurons/cytology ; Neurons/metabolism ; Organoids/cytology ; Pluripotent Stem Cells/cytology ; Pluripotent Stem Cells/metabolism
    Language English
    Publishing date 2020-06-01
    Publishing country England
    Document type Journal Article ; Research Support, Non-U.S. Gov't ; Review
    ZDB-ID 1225672-9
    ISSN 1476-5403 ; 1350-9047
    ISSN (online) 1476-5403
    ISSN 1350-9047
    DOI 10.1038/s41418-020-0566-4
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  6. Article ; Online: Prospero Phase-Separating the Way to Neuronal Differentiation.

    Bonnay, François / Knoblich, Juergen A

    Developmental cell

    2020  Volume 52, Issue 3, Page(s) 251–252

    Abstract: Drosophila neural progenitors require the transcriptional repressor Prospero to promptly establish the neuronal fate of their daughter cells to avoid tumorigenesis. In this issue of Developmental Cell, Liu et al. (2020) find that Prospero is mitotically ... ...

    Abstract Drosophila neural progenitors require the transcriptional repressor Prospero to promptly establish the neuronal fate of their daughter cells to avoid tumorigenesis. In this issue of Developmental Cell, Liu et al. (2020) find that Prospero is mitotically implanted and forms liquid-like droplets mediating HP1a condensation to permanently repress its targets.
    MeSH term(s) Animals ; Cell Differentiation ; Drosophila Proteins ; Nerve Tissue Proteins ; Nuclear Proteins ; Transcription Factors
    Chemical Substances Drosophila Proteins ; Nerve Tissue Proteins ; Nuclear Proteins ; Transcription Factors
    Language English
    Publishing date 2020-01-24
    Publishing country United States
    Document type Journal Article ; Comment
    ZDB-ID 2054967-2
    ISSN 1878-1551 ; 1534-5807
    ISSN (online) 1878-1551
    ISSN 1534-5807
    DOI 10.1016/j.devcel.2020.01.022
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  7. Article: Lab-Built Brains.

    Knoblich, Juergen A

    Scientific American

    2016  Volume 316, Issue 1, Page(s) 26–31

    MeSH term(s) Brain/embryology ; Cell Culture Techniques ; Embryonic Stem Cells ; Humans ; Models, Biological ; Organoids/growth & development
    Language English
    Publishing date 2016-12-09
    Publishing country United States
    Document type Journal Article
    ZDB-ID 246-x
    ISSN 1946-7087 ; 0036-8733
    ISSN (online) 1946-7087
    ISSN 0036-8733
    DOI 10.1038/scientificamerican0117-26
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  8. Article ; Online: Tracing Stem Cell Division in Adult Neurogenesis.

    Corsini, Nina S / Knoblich, Juergen A

    Cell stem cell

    2018  Volume 22, Issue 2, Page(s) 143–145

    Abstract: Neural stem cells in the ventricular-subventricular zone of the adult brain continuously generate differentiated neurons without depleting the stem cell pool. In this issue of Cell Stem Cell, Obernier et al. (2018) present the surprising finding that ... ...

    Abstract Neural stem cells in the ventricular-subventricular zone of the adult brain continuously generate differentiated neurons without depleting the stem cell pool. In this issue of Cell Stem Cell, Obernier et al. (2018) present the surprising finding that this occurs through mostly symmetric divisions that either generate two differentiating or two self-renewing daughter cells.
    MeSH term(s) Cell Differentiation ; Cell Division ; Cell Self Renewal ; Neural Stem Cells ; Neurogenesis
    Language English
    Publishing date 2018-02-15
    Publishing country United States
    Document type Journal Article ; Comment
    ZDB-ID 2375354-7
    ISSN 1875-9777 ; 1934-5909
    ISSN (online) 1875-9777
    ISSN 1934-5909
    DOI 10.1016/j.stem.2018.01.012
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  9. Article ; Online: Human organoids: model systems for human biology and medicine.

    Kim, Jihoon / Koo, Bon-Kyoung / Knoblich, Juergen A

    Nature reviews. Molecular cell biology

    2020  Volume 21, Issue 10, Page(s) 571–584

    Abstract: The historical reliance of biological research on the use of animal models has sometimes made it challenging to address questions that are specific to the understanding of human biology and disease. But with the advent of human organoids - which are stem ...

    Abstract The historical reliance of biological research on the use of animal models has sometimes made it challenging to address questions that are specific to the understanding of human biology and disease. But with the advent of human organoids - which are stem cell-derived 3D culture systems - it is now possible to re-create the architecture and physiology of human organs in remarkable detail. Human organoids provide unique opportunities for the study of human disease and complement animal models. Human organoids have been used to study infectious diseases, genetic disorders and cancers through the genetic engineering of human stem cells, as well as directly when organoids are generated from patient biopsy samples. This Review discusses the applications, advantages and disadvantages of human organoids as models of development and disease and outlines the challenges that have to be overcome for organoids to be able to substantially reduce the need for animal experiments.
    MeSH term(s) Animals ; Biology/methods ; Communicable Diseases/pathology ; Genetic Diseases, Inborn/pathology ; Genetic Engineering/methods ; Humans ; Medicine/methods ; Neoplasms/pathology ; Organoids/physiology ; Stem Cells/physiology
    Keywords covid19
    Language English
    Publishing date 2020-07-07
    Publishing country England
    Document type Journal Article ; Research Support, Non-U.S. Gov't ; Review
    ZDB-ID 2031313-5
    ISSN 1471-0080 ; 1471-0072
    ISSN (online) 1471-0080
    ISSN 1471-0072
    DOI 10.1038/s41580-020-0259-3
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  10. Article ; Online: Integrated transcriptome and proteome analysis reveals posttranscriptional regulation of ribosomal genes in human brain organoids.

    Sidhaye, Jaydeep / Trepte, Philipp / Sepke, Natalie / Novatchkova, Maria / Schutzbier, Michael / Dürnberger, Gerhard / Mechtler, Karl / Knoblich, Jürgen A

    eLife

    2023  Volume 12

    Abstract: During development of the human cerebral cortex, multipotent neural progenitors generate excitatory neurons and glial cells. Investigations of the transcriptome and epigenome have revealed important gene regulatory networks underlying this crucial ... ...

    Abstract During development of the human cerebral cortex, multipotent neural progenitors generate excitatory neurons and glial cells. Investigations of the transcriptome and epigenome have revealed important gene regulatory networks underlying this crucial developmental event. However, the posttranscriptional control of gene expression and protein abundance during human corticogenesis remains poorly understood. We addressed this issue by using human telencephalic brain organoids grown using a dual reporter cell line to isolate neural progenitors and neurons and performed cell class and developmental stage-specific transcriptome and proteome analysis. Integrating the two datasets revealed modules of gene expression during human corticogenesis. Investigation of one such module uncovered mTOR-mediated regulation of translation of the 5'TOP element-enriched translation machinery in early progenitor cells. We show that in early progenitors partial inhibition of the translation of ribosomal genes prevents precocious translation of differentiation markers. Overall, our multiomics approach proposes novel posttranscriptional regulatory mechanisms crucial for the fidelity of cortical development.
    MeSH term(s) Humans ; Transcriptome ; Proteome/metabolism ; Neurogenesis/genetics ; Brain/metabolism ; Organoids/metabolism
    Chemical Substances Proteome
    Language English
    Publishing date 2023-03-29
    Publishing country England
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 2687154-3
    ISSN 2050-084X ; 2050-084X
    ISSN (online) 2050-084X
    ISSN 2050-084X
    DOI 10.7554/eLife.85135
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