Single-cell technologies in stem cell epigenetics

2020 ◽  
pp. 187-206
Author(s):  
Chen Kozulin ◽  
Danny Bavli ◽  
Oren Ram
Blood ◽  
2019 ◽  
Vol 134 (Supplement_1) ◽  
pp. SCI-19-SCI-19
Author(s):  
Bertie Gottgens

The Gottgens group uses a combination of experimental and computational approaches to study how transcription factor networks control the function of blood stem cells and how mutations that perturb such networks cause diseases. The group's current research focuses on (i) single cell genomics of early blood development, (ii) computer models of the transcriptional landscape of blood stem cell differentiation, (iii) transcriptional consequences of leukaemogenic mutations, and (iv) molecular characterization of human blood stem cell populations used in cell and gene therapy protocols. As requested by the session chair, this year's presentation will first provide an overview of single cell technologies, and how they are advancing our understanding of multiple facets of haematology research. This will include single cell molecular profiling, as well as single cell functional assays, and in particular also how a combination of the two allows a more precise definition of haematopoietic stem and progenitor cell types. The rest of the presentation will focus on our multidisciplinary work combining single cell molecular profiling, bioinformatics analysis and experimental/functional validation to study the normal haematopoiesis, and contrast this with 6 mouse models of pre-leukaemic disease. Comprehensive bioinformatics analysis reveals not only qualitative changes in cellular abundance, but also pinpoints the underlying molecular changes that are most likely driving the early stages of malignant disease. An overarching theme will be how single cell landscapes allow us to move seamlessly between different scales of biological investigation, from the molecular to the cellular and whole tissue scale. Finally, extrapolation to human patient data demonstrates disease relevance of gene sets identified from comparative analysis of single cell transcriptional landscapes in mouse models. Disclosures Gottgens: Astra Zeneca: Research Funding; GSK: Research Funding; Novo Nordisk: Consultancy, Research Funding; Autolus: Consultancy, Research Funding.


2021 ◽  
Vol 132 (2) ◽  
pp. S18
Author(s):  
Cristina Baricordi ◽  
Mariana Loperfido ◽  
Aimin Yan ◽  
Hareesh Chamarthi ◽  
Luigi Barbarossa ◽  
...  

2014 ◽  
Vol 16 (10) ◽  
pp. 919-927 ◽  
Author(s):  
Philipp S. Hoppe ◽  
Daniel L. Coutu ◽  
Timm Schroeder

2021 ◽  
Vol 8 (8) ◽  
pp. 2004320
Author(s):  
Hua Wang ◽  
Peng Gong ◽  
Tong Chen ◽  
Shan Gao ◽  
Zhenfeng Wu ◽  
...  

2017 ◽  
Vol 371 (1) ◽  
pp. 171-179 ◽  
Author(s):  
Lise J. Harbom ◽  
Nadine Michel ◽  
Michael J. McConnell

2020 ◽  
Vol 22 (Supplement_3) ◽  
pp. iii323-iii323
Author(s):  
Flavia W de Faria ◽  
Marta Interlandi ◽  
Natalia Moreno ◽  
Monika Graf ◽  
Viktoria Melcher ◽  
...  

Abstract Embryonal tumors with multilayered rosettes (ETMR) are deadly brain malignancies affecting young children. No standard treatment is available and the median survival is less than 12 months. Molecularly, the disease is characterized by the miRNA C19MC cluster amplification, with the expression of multiples miRNAs related to a stem cell program. The discoveries on the purely molecular mechanisms of the disease did not help to create a bridge for new treatment strategies so far and the cellular diversity of ETMR remains poorly understood. In this study, we used single-cell RNA sequencing of murine and human tumors to describe ETMR cellular heterogeneity. Our findings support that intra-tumoral heterogeneity is mainly characterized by 4 cellular programs defining a developmental hierarchy related to different metabolic states: 1) Early quiescent NSC-like cells supported by fatty-acid oxidation 2) Late NSC and NP-like proliferative cells fueled by glycolytic metabolism; 3) Post-mitotic neuroblast-like cells, relying on oxidative-phosphorylation; 4) NSC-like proliferative cells, with metabolic plasticity and capable of performing the three types of metabolism. Tumor-specific ligand-receptor interaction analysis revealed that ETMR exchange with microglia and vascular mural cells (MC) signals related to extracellular matrix (ECM) organization (Cxcl12-CxCr4), stem cell signaling (BMPs-BMP receptors), anti-apoptosis and survival (Ntf3-Ntrk), not seen in the control brain. In addition, the vascular MC showed a cancer-associated fibroblast (CAF) phenotype, with potential prognostic implications, as previously demonstrated for other tumors. This study provides new findings to build up a more robust understanding of ETMR biology and opens space for further studies in the field.


Cell Systems ◽  
2021 ◽  
Vol 12 (5) ◽  
pp. 388-400
Author(s):  
Maeve P. Nagle ◽  
Gabriela S. Tam ◽  
Evan Maltz ◽  
Zachary Hemminger ◽  
Roy Wollman

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