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Dive into the research topics where Françoise Dieterlen-Lièvre is active.

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Featured researches published by Françoise Dieterlen-Lièvre.


Cell | 1996

Lymphoid Potential, Probed before Circulation in Mouse, Is Restricted to Caudal Intraembryonic Splanchnopleura

Ana Cumano; Françoise Dieterlen-Lièvre; Isabelle Godin

Emergence of hemopoietic stem cells in the mammalian embryo has yet to be definitively allocated. Previously, we detected multipotent hemopoietic precursors in the region surrounding the dorsal aorta (paraaortic splanchnopleura) beginning at 8.5 days postcoitum (dpc). However, as circulation is already established, it remained unclear whether hemopoietic precursors arise in situ or are blood-delivered. By adding an organotypic step to our former culture system, we now detect lymphocyte and multipotent myeloid precursors from the intraembryonic splanchnopleura as early as 7.5 dpc. Under identical conditions, yolk sacs from the same embryos are unable to generate lymphoid progeny and have a reduced potential for myeloid differentiation and maintenance. Thus, if isolated before circulation, the yolk sac does not produce multipotent precursors and therefore does not contribute to definitive hemopoiesis in the mouse.


Developmental Biology | 1981

Diffuse intraembryonic hemopoiesis in normal and chimeric avian development

Françoise Dieterlen-Lièvre; C. Martin

Abstract We have previously demonstrated in quail embryos grafted on chick yolk sacs the existence of intraembryonic stem cells responsible for definitive hemopoiesis. In order to determine the origin of these cells, we now examine the diffuse hemopoietic processes within the avian embryos mesoderm. At 4–5 days of incubation in the two species, basophilic cells were found throughout the dorsal mesentery. At 6–8 days these cells became very numerous and built up dense foci at the level of branching of the anterior and posterior cardinal veins. These cells often infiltrated the wall of lymph spaces and channels and were also present in the lumen of blood vessels. Such locations support the interpretation that these basophilic cells represent early stages of hemopoietic differentiation. At 8–10 days, erythropoiesis or granulopoiesis was seen in the foci, which then regressed rapidly. The foci maximal development coincided with the period of colonization of the intraembryonic organ rudiments. In “yolk sac chimeras,” the foci were always constituted by quail cells, indicating their intraembryonic origin. The primordial origin of the intramesodermal cells remains to be determined. A likely source might be the ventral wall of the aorta which appeared to shed cells into the lumen and into the mesentery in the 3-day embryo.


Anatomy and Embryology | 1995

Potential intraembryonic hemogenic sites at pre-liver stages in the mouse.

Juan A. García-Porrero; Isabelle Godin; Françoise Dieterlen-Lièvre

In the course of a previous experimental study on the early development of the mouse embryo hemopoietic system, we found that, at the 10–25 pairs of somite stages, the para-aortic splanchnopleure contains hemopoietic progenitors. Trying to discover a structural basis for this potentiality, we have looked for cytological signs of hemopoiesis in the embryo proper between 8.5 and 12 days post-coitum, i.e. prior to full-blown fetal liver hemopoiesis. Two suggestive findings are reported: (1) intra-arterial hemopoietic cells aggregates are present in the omphalomesenteric and umbilical arteries and to a lesser degree in the dorsal aorta; (2) cells groups resembling yolk sac blood islands are observed in the mesentery. The intra-arterial aggregates are strikingly similar to the intra-aortic clusters of avian embryos. These cytological aspects provide the anatomical basis underlying recent functional data that revealed the hemogenic capacity of the para-aortic splanchnopleure.


Development | 2003

Mouse placenta is a major hematopoietic organ

Marcio Alvarez-Silva; Patricia Belo-Diabangouaya; Josselyne Salaün; Françoise Dieterlen-Lièvre

Placenta and yolk sac from 8- to 17-day-old (E8-E17) mouse embryos/fetuses were investigated for the presence of in vitro clonogenic progenitors. At E8-E9, the embryonic body from the umbilicus caudalwards was also analysed. Fetal liver was analysed beginning on E10. At E8, between five and nine somite pairs (sp), placenta, yolk sac and embryonic body yielded no progenitors. The first progenitors appeared at E8.5 at the stage of 15 sp in the yolk sac, 18 sp in the embryonic body, 20 sp in the placenta and only at E12 in the fetal liver (absent at E10, at E11 not determined). Progenitors with a high proliferation potential that could be replated for two months, as well as the whole range of myeloid progenitors, were found at all stages in all organs. However, the earliest of these progenitors (these yielding large, multilineage colonies) were 2-4 times more frequent in the placenta than in the yolk sac or fetal liver. In the fetal liver, late progenitors were more frequent and the cellularity increased steeply with developmental age. Thus, the fetal liver, which is a recognized site for amplification and commitment, has a very different hematopoietic developmental profile from placenta or yolk sac. Placentas were obtained from GFP transgenic embryos in which only the embryonic contribution expressed the transgene. 80% of the colonies derived from these placental cells were GFP+, and so originated from the fetal component of the placenta. These data point to the placenta as a major hematopoietic organ that is active during most of pregnancy.


Nature | 1978

The origin of lymphoid stem cells studied in chick yolk sac–embryo chimaeras

Olli Lassila; Jussi Eskola; Paavo Toivanen; Claude Martin; Françoise Dieterlen-Lièvre

THE development of lymphoid organs in the chick embryo is dependent on colonisation by extrinsic stem cells1–6, some of which are present in the yolk sac blood islands, as Moore and Owen demonstrated by transplanting 7-d yolk sac cells into 14-d-old irradiated chicken embryos2. These authors demonstrated population of lymphoid organs by donor-derived cells, and suggested that all haemopoietic stem cells are formed in the early yolk sac3. This interpretation has been challenged7–11, particularly on the basis of results obtained in quail–chick chimaeric germs7. We present here further evidence, based on the use of chick–chick yolk sac–embryo chimaeras, that lymphoid stem cells in the chicken do not originate primarily in the yolk sac.


Anatomy and Embryology | 1993

Emergence of endothelial and hemopoietic cells in the avian embryo

Luc Pardanaud; Françoise Dieterlen-Lièvre

SummaryDuring organogenesis, endothelial cells develop through two different mechanisms: differentiation of intrinsic precursors in organ rudiments constituted of mesoderm associated with endoderm, and colonization by extrinsic precursors in organs constituted of mesoderm associated with ectoderm (Pardanaud et al. 1989). On the other hand, both types of rudiment are colonized by extrinsic hemopoietic stem cells. In the present work we extend our former study by investigating the hemangioblastic (i.e. hemopoietic and angioblastic) potentialities of primordial germ layers in the area pellucida during the morphogenetic period. By means of interspecific grafts between quail and chick embryos, we show that splanchnopleural mesoderm gives rise to abundant endothelial cells, and to numerous hemopoietic cells in a permissive microenvironment, while somatopleural mesoderm produces very few cells belonging to these lineages, or none. Thus we confirm that the angioblastic capacities of the mesoderm differ radically, depending on its association with ectoderm or endoderm. Furthermore, at this embryonic period, both endothelial and hemopoietic potentialities are displayed by splanchnopleural mesoderm. However the site of emergence of intraembryonic hemopoietic stem cells appears spatially restricted by comparison to more widespread angioblastic capacities.


Mechanisms of Development | 1978

Developmental relationships between vitelline and intra-embryonic haemopoiesis studied in avian ‘yolk sac chimaeras’

C. Martin; Denise Beaupain; Françoise Dieterlen-Lièvre

Using the quail-chick marker technique, cells have been traced in the haemopoietic organs of 149 developing chimaeras composed of a quail embryo with a chick yolk sac. The existence of intraembryonic stem cell relaying yolk sac stem cells, previously demonstrated with this system, is confirmed. Thymus, bursa of Fabricius and bone marrow are preferentially populated by intraembryonic stem cells. The spleen shows a transitory phase of colonization by chick yolk sac stem cells at 11--12 days of incubation. From 7 days onwards the yolk sac receives quail stem cell emigrating from the embryo.


Developmental and Comparative Immunology | 1998

Antigenic profiles of endothelial and hemopoietic lineages in murine intraembryonic hemogenic sites

Juan A. García-Porrero; Alexandra Manaia; Jaime Jimeno; Laurence L Lasky; Françoise Dieterlen-Lièvre; Isabelle Godin

Two hemogenic sites are present in mouse embryos before the onset of fetal liver hemopoiesis. While the yolk sac provides for immediate erythropoiesis, an intraembryonic region encompassing the dorsal aorta produces definitive hematopoietic stem cells, as shown experimentally. At early developmental stages this region, that we named paraaortic splanchnopleura, produces multipotent progenitors. At the time of fetal liver colonisation, the paraaortic splanchnopleura further evolves into aorta, gonads and mesonephros (AGM) and contains progenitors capable of long term multilineage reconstitution. Only then are cytologically identifiable collections of early hemopoietic cells present in various arteries and in the mesentery. The present report focuses on the antigenic characterisation of immature hemopoietic progenitors in order to trace back the intraembryonic precursors at earlier developmental stages. CD34, an antigen expressed by immature progenitors and endothelial cells, labels all potential hemopoietic sites. Markers, supposed to counterstain endothelial cells and spare CD34+ hemopoietic cells, also stain various hemopoietic cells. The meaning of these shared antigenic expressions between cells of the endothelial and hemopoietic lineages in the early embryo is discussed.


Cell Adhesion and Communication | 1993

Expression of C-ETS1 in early chick embryo mesoderm: relationship to the hemangioblastic lineage.

Luc Pardanaud; Françoise Dieterlen-Lièvre

In situ hybridization was used to detect the expression of the c-ets1 protooncogene during formation of the germ layers in the chick blastodisc. c-ets1 transcripts were present during the gastrulation process, i.e. when the mesodermal cells invaginated. The expression became down-regulated in lateral plate and the dorsal part of the somites while an intense signal was retained in the intermediate cell mass. When vasculogenesis started, c-ets1 transcripts labelled blood islands and endothelial cells. Before the mesoderm split, transcripts were present over the whole layer, more abundant however on its ventral side in contact with the endoderm. After the mesoderm split, silver grains became distributed asymmetrically: splanchnopleural mesoderm expressed c-ets1 messengers all over while expression in the somatopleural mesoderm was restricted to a few profiles corresponding to small endothelial cell groups. This asymmetrical distribution of c-ets1 transcripts is in agreement with our previous experimental findings establishing the different potentialities of the two mesodermal layers regarding hemopoiesis, vasculogenesis and angiogenesis processes.


Developmental Biology | 1980

A study of the development of the hemopoietic system using quail-chick chimeras obtained by blastoderm recombination

C. Martin; Denise Beaupain; Françoise Dieterlen-Lièvre

Abstract The anterior part of the area pellucida from quail blastoderms extending to the 10th or the 17th somite level was substituted for the corresponding region of chick blastoderms in ovo. Reciprocal grafts were also carried out. In external appearance the resulting chimeras had a composite body, one species contributing the head and neck or the head, neck, and wing regions while the other species provided the remainder. The chimeras were always grafted on a chick yolk sac. The cellular composition of hemopoietic organs according to species was analyzed by means of the quail-chick nuclear difference, in 39 viable chimeras at 11–13 days of incubation. The thymus composition depended on the level of the boundary between the two species. In chimeras in which the quail contributed head and neck, the thymic epithelial stroma was made of quail cells while the lymphoid population was of chick origin. In contrast, when the quail contribution also extended to the wings, both thymic stroma and lymphoid cells were of quail origin. In reciprocal combinations, in which head and neck were of chicken origin on a quail body, a different result was obtained: no lymphoid cells were present in the thymus which was reduced to its epithelial component and this was of chick origin. On the other hand, if the chick contribution extended to the wings, as in the reciprocal combination, all thymus components were of chick origin. The spleen and the bursa of Fabricius in most instances did not differ in their cellular composition from the surrounding tissues; however in some chimeras a minor admixture of cells of the other species was also found. Overall these results suggest that hemopoietic stem cells destined to colonize intraembryonic organs arise in territories derived from the whole area pellucida excluding the prospective head-neck region. Furthermore, each hemopoietic organ rudiment appears to be colonized by precursors derived from adjacent territories.

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Josselyne Salaün

Centre national de la recherche scientifique

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