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Single cell analysis of iPSC-derived cortical organoids in biofunctionalized gelatin hydrogels

ABSTRACT: Single cell analysis of iPSC-derived cortical organoids in biofunctionalized gelatin hydrogels

PROVIDER: PRJEB72813 | ENA |

REPOSITORIES: ENA

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			Action	DRS
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	ERR12670841_1.fastq.gz	Fastqsanger.gz
	ERR12670841_2.fastq.gz	Fastqsanger.gz
	ERR12670842_1.fastq.gz	Fastqsanger.gz
	ERR12670842_2.fastq.gz	Fastqsanger.gz

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Single cell analysis of iPSC-derived cortical organoids in biofunctionalized gelatin hydrogels

Project description:Human neural organoid models have become an important tool for studying neurobiology. In this work, we compared Matrigel to an N-cadherin peptide-functionalized gelatin methacryloyl hydrogel (termed GelMA-Cad) for culturing cortical neural organoids. Specifically, we compare five materials: (1) Matrigel, (2) GelMA-Cad with high crosslinker (HC), (3) GelMA-Cad with low crosslinker (LC), (4) GelMA HC and (5) GelMA LC. We determined that both mechanical properties and peptide presentation can tune cell fate and diversity in gelatin-based matrices during differentiation. Of particular note, cortical organoids cultured in GelMA-Cad produce higher numbers of neurogenic and ciliated radial glia and upper-layer excitatory neurons—an important population for modeling neurodegenerative disease—compared to GelMA and Matrigel controls.

2024-02-28 | E-MTAB-13828 | biostudies-arrayexpress

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Project description:Single cell analysis of iPSC-derived cortical organoids in biofunctionalized gelatin hydrogels

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Single cell analysis of iPSC-derived cortical organoids in biofunctionalized gelatin hydrogels

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Polyvinyl alcohol/gelatin hydrogels regulate cell adhesion and chromatin accessibility

Project description:Cell adhesion is known to heavily influence cell migration and wound healing. A number of cell adhesion molecules and their roles has been extensively studied. However, the changes of global chromatin accessibility and gene expressions correlated with cell adhesion is still unclear. Here we prepared a series of PVA/Gelatin hydrogels to handily regulate cell adhesion by adjusting gelatin concentration and found that cell adhesion area and the ratio of non-circular cells were increased with the increasement of gelatin concentration while cell circularity was decreased. Our results showed that widespread chromatin accessibility was increased with increasing expression level of histone deacetylase 11 (Hdc11) under poor cell adhesion. Meanwhile, one branch of MAPK pathway - ERK 1/2 which involved in mechanotransduction signaling was also found in the enrichment analysis of downregulated genes. This work provided a handy method to regulate cell adhesion and these findings deepen our understanding of the cell adhesion process and its associated chromatin accessibility.

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Tissue extracellular matrix hydrogels as alternative to Matrigel for culturing gastrointestinal organoids

Project description:Matrigel, a mouse tumor extracellular matrix (ECM) protein mixture, is an indispensable component of most organoid tissue culture. However, it has limited the utility of organoids for drug development and regenerative medicine due to its tumor-derived origin, batch-to batch variation, high cost, and safety issues. Here, we demonstrate that gastrointestinal (GI) tissue-derived ECM hydrogels are a suitable substitute for Matrigel in GI organoid culture. We found that the development and function of GI organoids grown in GI ECM hydrogels are comparable or often superior to those in Matrigel. In addition, GI ECM hydrogels enabled long-term subculture and transplantation of GI organoids by providing GI tissue-mimetic microenvironments. Tissue-specific and age-related ECM profiles of GI ECM hydrogels that affect organoid development were also elucidated through proteomic analysis. Together, our results suggest that ECM hydrogels derived from decellularized GI tissues are an effective alternative to the current gold standard, Matrigel, and produce organoids suitable for GI disease modeling, drug development, and tissue regeneration.

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