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Concept

Haematopoiesis

Related publications (30)

Characterization of the gut-bone marrow axis through bile acid signaling

Alejandro Alonso Calleja

Communication between the intestine and other organs such as the lungs, brain or bones is mediated by several metabolites, like short-chain fatty acids or bile acids, that relay information about nutritional and microbiota status. Bile acids are endogenous ...

EPFL2024

Novel quantitative bioengineered tools to track human bone marrow niche cellular constituents in health and disease

Rita Sarkis

Acute leukemia has a high mortality rate of approximately 50%, and current methods are not effective in predicting disease progression and relapse. To improve our understanding of hematopoiesis and develop new markers for predicting disease relapse in dead ...

EPFL2023

Epigenome-wide DNA methylation in externalizing behaviours: A review and combined analysis

Maria del Carmen Sandi Perez

DNA methylation (DNAm) is one of the most frequently studied epigenetic mechanisms facilitating the interplay of genomic and environmental factors, which can contribute to externalizing behaviours and related psychiatric disorders. Previous epigenome-wide ...

PERGAMON-ELSEVIER SCIENCE LTD2023

New approaches to uncover the minimally functional hematopoietic niche using the adipocytic differentiation axis: pharmacological modulation and adrenal niche induction

Frédérica Schyrr

Hematopoietic Stem and Progenitor Cells (HSPCs) reside in their niche, a structure that regulates the balance of cellular quiescence, self-renewal and commitment towards differentiated cells. This highly plastic niche is formed by several cellular players, ...

EPFL2022

Tcf1 is essential for initiation of oncogenic Notch1-driven chromatin topology in T-ALL

Freddy Radtke, Ute Koch, Nadine Fournier, Mateusz Waldemar Antoszewski, Marianne Nkosi, Tara Kimberly Sugrue, Christelle Dubey

NOTCH1 is a well-established lineage specifier for T cells and among the most frequently mutated genes throughout all subclasses of T cell acute lymphoblastic leukemia (T-ALL). How oncogenic NOTCH1 signaling launches a leukemia-prone chromatin landscape du ...

AMER SOC HEMATOLOGY2022

A Manganese Phosphate Nanocluster Activates the cGAS‐STING Pathway for Enhanced Cancer Immunotherapy

Li Tang, Yugang Guo, Armand Kurum, Kewen Lei, Yuqing Xie, Min Gao, Yu Zhao, Xiaomeng Hu

Targeting the stimulator of interferon genes (STING) pathway with cyclic dinucleotides (CDNs), the natural STING agonists, is a promising immunotherapeutic strategy for cancer. However, the clinical application of natural CDNs as therapeutics is greatly hi ...

2021

A functional model of adult dentate gyrus neurogenesis

Wulfram Gerstner, Olivia Gozel

In adult dentate gyrus neurogenesis, the link between maturation of newborn neurons and their function, such as behavioral pattern separation, has remained puzzling. By analyzing a theoretical model, we show that the switch from excitation to inhibition of ...

2021

The Periostin/Integrin-alpha v Axis Regulates the Size of Hematopoietic Stem Cell Pool in the Fetal Liver

Jörg Hülsken

We earlier showed that outside-in integrin signaling through POSTN-ITGAV interaction plays an important role in regulating adult he-matopoietic stem cell (HSC) quiescence. Here, we show that Itgav deletion results in increased frequency of phenotypic HSCs ...

2020

Tweaking DNA of myeloid cells curbs cancer spread

Michele De Palma, Ali Ghasemi

Blood cells called myeloid cells can facilitate metastasis - the spread of a tumour to distant organs. Taming these cells with drugs that alter the chemical structure of their DNA limits metastasis in mice. ...

NATURE PUBLISHING GROUP2020

In Vivo Pre-Instructed HSCs Robustly Execute Asymmetric Cell Divisions In Vitro

Matthias Lütolf, Mukul Girotra, Aline Roch, Vincent Trachsel

Hematopoietic stem cells (HSCs) are responsible for life-long production of all mature blood cells. Under homeostasis, HSCs in their native bone marrow niches are believed to undergo asymmetric cell divisions (ACDs), with one daughter cell maintaining HSC ...

2020

Inhibition of mitophagy drives macrophage activation and antibacterial defense during sepsis

Johan Auwerx, Antoine Jalil

Mitochondria have emerged as key actors of innate and adaptive immunity. Mitophagy has a pivotal role in cell homeostasis, but its contribution to macrophage functions and host defense remains to be delineated. Here, we showed that lipopolysaccharide (LPS) ...

AMER SOC CLINICAL INVESTIGATION INC2020

MarrowQuantAcross Aging and Aplasia: A Digital Pathology Workflow for Quantification of Bone Marrow Compartments in Histological Sections

Nicolas Kunz, Olaia Maria Naveiras Torres-Quiroga, Olivier Burri, Josefine Catharina Pedersen Tratwal, Vasco Ledebur de Antas de Campos, Rita Sarkis, Frédérica Schyrr, Shanti Rojas-Sutterlin, Daniel Naveed Tavakol

The bone marrow (BM) exists heterogeneously as hematopoietic/red or adipocytic/yellow marrow depending on skeletal location, age, and physiological condition. Mouse models and patients undergoing radio/chemotherapy or suffering acute BM failure endure rapi ...

2020

Characterization of myelodysplastic syndromes progressing to acute lymphoblastic leukemia

Filipe Amândio Brandão Sanches Vong Martins

Myelodysplastic syndromes (MDS) are a heterogeneous group of diseases, with a variable probability of transformation into acute leukemia, which is, in the vast majority of cases, of myeloid lineage. Nevertheless, rare cases of acute lymphoblastic leukemia ...

SPRINGER2021

Canonical Notch signaling controls the early thymic epithelial progenitor cell state and emergence of the medullary epithelia lineage in fetal thymus development

Freddy Radtke, Ute Koch, Dong Liu

Thymus function depends on the epithelial compartment of the thymic stroma. Cortical thymic epithelial cells (cTECs) regulate T cell lineage commitment and positive selection, while medullary (m) TECs impose central tolerance on the T cell repertoire. Duri ...

2020

Metabolic and microenvironmental strategies to accelerate hematopoietic recovery post-aplasia

Vasco Ledebur de Antas de Campos

The procedure-associated mortality rate of bone marrow transplantations (BMT) remains close to 25%. The BMT is therefore only indicated for life-threatening diseases, with no replacement of this technology to be expected in the foreseeable future. Modest i ...

EPFL2019

Targeting small molecule drugs to T cells with antibody-directed cell-penetrating gold nanoparticles

Francesco Stellacci, Ahmet Bekdemir

We sought to develop a nanoparticle vehicle that could efficiently deliver small molecule drugs to target lymphocyte populations. The synthesized amphiphilic organic ligand-protected gold nanoparticles (amph-NPs) were capable of sequestering large payloads ...

2019

Measurement of Mitochondrial Mass and Membrane Potential in Hematopoietic Stem Cells and T-cells by Flow Cytometry

George Coukos, Olaia Maria Naveiras Torres-Quiroga, Alexandre Harari, Mukul Girotra, Nicola Vannini

A fine balance of quiescence, self-renewal, and differentiation is key to preserve the hematopoietic stem cell (HSC) pool and maintain lifelong production of all mature blood cells. In recent years cellular metabolism has emerged as a crucial regulator of ...

2019

The NAD-Booster Nicotinamide Riboside Potently Stimulates Hematopoiesis through Increased Mitochondrial Clearance

Johan Auwerx, Matthias Lütolf, Bart Deplancke, Carlos Canto Alvarez, George Coukos, Olaia Maria Naveiras Torres-Quiroga, Dongryeol Ryu, Yang Li, Josefine Catharina Pedersen Tratwal, Vasco Ledebur de Antas de Campos, Mukul Girotra, Joanna Ratajczak, Nicola Vannini, Eija Riitta Pirinen, Pedro Romero, Pernille Yde Rainer, Sonja Giger, Gennady Nikitin, Shanti Rojas-Sutterlin, Aurélien Laurent Jean-Charles Oggier, Vincent Trachsel

It has been recently shown that increased oxidative phosphorylation, as reflected by increased mitochondrial activity, together with impairment of the mitochondrial stress response, can severely compromise hematopoietic stem cell (HSC) regeneration. Here w ...

CELL PRESS2019

The nuclear receptor corepressor NCoR1 regulates hematopoiesis and leukemogenesis in vivo

Johan Auwerx, Lulu Liu, Wei Zhang

Enhanced understanding of normal and malignant hematopoiesis pathways should facilitate the development of effective clinical treatment strategies for hematopoietic malignancies. Nuclear receptor corepressor 1 (NCoR1) has been implicated in transcriptional ...

AMER SOC HEMATOLOGY2019

Modeling hematopoietic stem cell dynamics in bioengineered niches

Sonja Giger

Bone marrow transplantation is a well-established medical procedure for the treatment of various hematologic diseases. However, the relatively low number of hematopoietic stem cells (HSCs) that can be harvested, especially from umbilical cord blood, limits ...

EPFL2019