Publications de Anne Grapin-Botton

Longitudinal three-dimensional visualisation of autoimmune diabetes by functional optical coherence imaging

Theo Lasser, Martin Villiger, Anne Grapin-Botton, Arno Pino Bouwens, Corinne Berclaz, Daniel Pawel Szlag, Jérôme Extermann, Joan Goulley

Aims/hypothesis It is generally accepted that structural and functional quantitative imaging of individual islets would be beneficial to elucidate the pathogenesis of type 1 diabetes. We here introduce functional optical coherence imaging (FOCI) for fast, ...

Springer Verlag2016

Label-free fast 3D coherent imaging reveals pancreatic islet micro-vascularization and dynamic blood flow

Theo Lasser, Paul James Marchand, Anne Grapin-Botton, Arno Pino Bouwens, Corinne Berclaz, David Nguyen, Daniel Pawel Szlag, Jérôme Extermann, Julia Sophie Katarina Nilsson

In diabetes, pancreatic beta-cells play a key role. These cells are clustered within structures called islets of Langerhans inside the pancreas and produce insulin, which is directly secreted into the blood stream. The dense vascularization of islets of La ...

2016

Combined Optical Coherence and Fluorescence Microscopy to assess dynamics and specificity of pancreatic beta-cell tracers

Theo Lasser, Anne Grapin-Botton, Arno Pino Bouwens, Christophe Pache, Daniel Pawel Szlag, Corinne Berclaz, Antonio Lopez

The identification of a beta-cell tracer is a major quest in diabetes research. However, since MRI, PET and SPECT cannot resolve individual islets, optical techniques are required to assess the specificity of these tracers. We propose to combine Optical Co ...

Nature Publishing Group2015

Concise Reviews: In Vitro-Produced Pancreas Organogenesis Models in Three Dimensions: Self-Organization From Few Stem Cells or Progenitors

Filippo De Franceschi, Anne Grapin-Botton, Chiara Greggio

Three-dimensional models of organ biogenesis have recently flourished. They promote a balance between stem/progenitor cell expansion and differentiation without the constraints of flat tissue culture vessels, allowing for autonomous self-organization of ce ...

Wiley-Blackwell2015

Bicaudal C1 promotes pancreatic NEUROG3+ endocrine progenitor differentiation and ductal morphogenesis

Daniel Constam, Anne Grapin-Botton, Jacques Rougemont, Joan Goulley, Yung Hae Kim, Laurence Anne E Lemaire

In human, mutations in bicaudal C1 (BICC1), an RNA binding protein, have been identified in patients with kidney dysplasia. Deletion of Bicc1 in mouse leads to left-right asymmetry randomization and renal cysts. Here, we show that BICC1 is also expressed i ...

Company Of Biologists Ltd2015

REST represses a subset of the pancreatic endocrine differentiation program

Anne Grapin-Botton, Yung Hae Kim

To contribute to devise successful beta-cell differentiation strategies for the cure of Type 1 diabetes we sought to uncover barriers that restrict endocrine fate acquisition by studying the role of the transcriptional repressor REST in the developing panc ...

Academic Press Inc Elsevier Science2015

Cell Cycle-Dependent Differentiation Dynamics Balances Growth and Endocrine Differentiation in the Pancreas

Anne Grapin-Botton, Laurence Anne E Lemaire, Yung Hae Kim

Organogenesis relies on the spatiotemporal balancing of differentiation and proliferation driven by an expanding pool of progenitor cells. In the mouse pancreas, lineage tracing at the population level has shown that the expanding pancreas progenitors can ...

Public Library Science2015

In Vitro Pancreas Organogenesis from Dispersed Mouse Embryonic Progenitors

Filippo De Franceschi, Anne Grapin-Botton, Chiara Greggio

The pancreas is an essential organ that regulates glucose homeostasis and secretes digestive enzymes. Research on pancreas embryogenesis has led to the development of protocols to produce pancreatic cells from stem cells. The whole embryonic organ can be c ...

Journal Of Visualized Experiments2014

Artificial three-dimensional niches deconstruct pancreas development in vitro

Matthias Lütolf, Filippo De Franceschi, Anne Grapin-Botton, Adrian Ranga, Samy Gobaa, Chiara Greggio

In the context of a cellular therapy for diabetes, methods for pancreatic progenitor expansion and subsequent differentiation into insulin-producing beta cells would be extremely valuable. Here we establish three-dimensional culture conditions in Matrigel ...

Company Of Biologists Ltd2013

COUP-TFII Controls Mouse Pancreatic beta-Cell Mass through GLP-1-beta-Catenin Signaling Pathways

Anne Grapin-Botton

Background: The control of the functional pancreatic beta-cell mass serves the key homeostatic function of releasing the right amount of insulin to keep blood sugar in the normal range. It is not fully understood though how beta-cell mass is determined. ...

2012