MODELING GENETIC Diseases through Reprogramming of HUMAN Amniotic Liquid Derived CELLS

Abstract Abstract 4789 Pluripotency and self-renewal, two key characteristics of induced pluripotent stem cells (IPS), make these cells ideally suited for modeling diseases in vitro and generating biological resources usable for drug screening and cell therapy. However, the reprogramming efficiency of somatic cells greatly varies according to the cell type, to the in vitro proliferation index, the number of passages and the age of the donor. Human amniotic liquid-derived cells (hALDC), collected during amniocentesis for the prenatal diagnosis of genetic diseases, represent an abundant source of primary cells. In preliminary experiments we have shown that hALDC expressed endogenous Oct4 and Sox2 proteins suggesting that could be readily amenable to reprogramming. To this end, we have used two strategies using either hALDC or neonatal fibroblasts: (1) lentivirus mediated gene transfer of OCT4, SOX2, LIN28, NANOG, (2) retroviruses mediated gene transfer of OCT4, SOX2, CMYC, KLF4 and (3) lentiviral transfer of OCT4, SOX2. hALDC transduced by these viruses were placed on MEF and b-FGF (10 ng/ml) with daily medium changes. One to three weeks after infection, typical human ES-like colonies could be picked up for expansion before being characterized. HALDC show an increased reprogramming potential with the [OCT4, SOX2, LIN28, NANOG] and [OCT4, SOX2] cocktails, when compared to reprogramming of neonatal fibroblasts. Twelve hALDC-derived-IPS cells were obtained from 12 different samples of amniotic fluid. All hALDC-IPS cell lines maintained a normal karyotype in culture and displayed the morphology and characteristics of human embryonic stem cells, including the surface expression of Tra-160, SSEA-3, SSEA-4, HESCA-1 and alkaline phosphatase, and formed multi-lineaged teratomas upon injection to NOD-SCID mice. Gene expression profiles of the IPS cell lines reveal a high correlation coefficient between hALDC-iPS cells and human embryonic stem cells, and a low correlation between hALDC-iPS and hALDC. When compared to hES cells H1, H9 and Cl01, these cell lines generated hematopoiesis with a variable efficiency in vitro. Amongst the hALDC-IPS cell lines generated by our laboratory (http://www.hescreg.eu/) four lines carry an inherited trisomy of chromosome 21, and three lines carry the homozygous “S” mutation in the beta-globin gene of sickle-cell anemia. All hALDC-IPS cell are currently banked at the Human Pluripotent Stem Cell Core Facility, France. In conclusion, hALDC can be rapidly and efficiently reprogrammed to pluripotency with a limited number of transgenes. Moreover, hALDC-IPS cell lines derived from patients can be used to modelize in vitro the phenotypic features of monogenic diseases such as sickle cell anemia or more complex, multifactorial disorders such as Down's syndrom. The ability to generate hematopoietic differentiation from these cell lines will facilitate the modelling of these hematopoietic disorders. Disclosures: No relevant conflicts of interest to declare.

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Generation of Blood Cells from Human Ips Cells in Vitro through the Hematopoietic Progenitors Concentrated within the Unique Structures, Ips-Sac.

Blood ◽

10.1182/blood.v112.11.1992.1992 ◽

2008 ◽

Vol 112 (11) ◽

pp. 1992-1992 ◽

Cited By ~ 1

Author(s):

Naoya Takayama ◽

Koji Eto ◽

Hiromitsu Nakauchi ◽

Shinya Yamanaka

Keyword(s):

Cell Lines ◽

Blood Cells ◽

Embryonic Stem ◽

Ips Cells ◽

Dermal Fibroblasts ◽

Hematopoietic Progenitors ◽

Transfusion Therapy ◽

Ips Cell ◽

Human Ips Cells

Abstract Human embryonic stem cells (hESCs) are proposed as an alternative source for transfusion therapy or studies of hematopoiesis. We have recently established an in vitro culture system whereby hESCs can be differentiated into hematopoietic progenitors within the ‘unique sac-like structures’ (ES-sacs), that are able to produce megakaryocytes and platelets (Takayama et al., Blood, 111, 5298–306, 2008). However there is a little concern that repetitive transfusion with same human ESC-derived platelets may induce immunological rejection against transfused platelets expressing allogenic HLA. Meanwhile, induced pluripotent stem (iPS) cells established from donor with identical HLA are well known as a potential and given source on platelet transfusion devoid of rejection. To examine if human iPS cells could generate platelets as well as from hESCs, we utilized 3 different human iPS cell lines; two were induced by transduction of 4 genes (Oct3/4, Klf4, Sox2, and c-Myc) in adult dermal fibroblasts, and one was by 3 genes without c-Myc. Sac-like structures (iPS-sac), inducible from 3 iPS cell lines, concentrated hematopoietic progenitors that expressed early hemato-endothelial markers, such as CD34, CD31, CD41a (integrin αIIb) and CD45. These progenitors were able to form hematopoietic colonies in semi-solid culture and differentiate into several blood cells including leukocytes, erythrocytes or platelets. Of these, obtained platelets responded to agonist stimulation, in which the function was as much as human ESC-derived platelets, as evidenced by PAC-1 binding with activated αIIbβ3 integrin or full spreading onto fibrinogen. These results collectively indicated that human dermal fibroblasts could generate functional and mature hematopoietic cells through the reprogramming process and this method may be useful for basic studies of hematopoietic disorders and clinical therapy in the future.

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Hematopoietic Differentiation of Human Embryonic Stem Cells in Vitro : Comparison of Three Cell Lines

Blood ◽

10.1182/blood.v112.11.4787.4787 ◽

2008 ◽

Vol 112 (11) ◽

pp. 4787-4787

Author(s):

Marion Brenot ◽

Annelise Bennaceur-Griscelli ◽

Marc Peschanski ◽

Maria Teresa Mitjavila-Garcia

Keyword(s):

Stem Cells ◽

Embryonic Stem Cells ◽

Cell Lines ◽

Human Embryonic Stem Cells ◽

Hematopoietic Cells ◽

Embryonic Stem ◽

Embryoid Bodies ◽

Hematopoietic Differentiation ◽

Hematopoietic Stem

Abstract Human embryonic stem cells (hES) isolated from the inner cell mass of a blastocyst have the ability to self renew indefinitely while maintaining their pluripotency to differentiate into multiple cell lineages. Therefore, hES represent an important source of cells for perspective cell therapies and serve as an essential tool for fundamental research, specifically for understanding pathophysiological mechanisms of human diseases for the development of novel pharmacological drugs. The generation of hematopoietic stem cells from hES may serve as an alternative source of cells for hematopoietic reconstitution following bone marrow transplantation and an interesting approach to understand early stages of hematopoietic development which are difficult to study in human embryos. Using two different methods, we have differentiated three hES cell lines (SA01, H1 and H9) into hematopoietic cells by generating embryoid bodies and co-culturing on the murine Op9 cell line. In both experimental approaches, we obtain cells expressing CD34 and when cultured in hematopoietic conditions, SA01 and H1 cell lines differentiate into various hematopoietic lineages as demonstrated by BFU-E, CFU-GM and CFU-GEMM colony formation, whereas H9 have almost exclusively granulo-macrophage differentiation. Cells composing these hematopoietic colonies express CD45, CD11b, CD31, CD41 and CD235 and staining with May Grundwald-Giemsa demonstrate neutrophil and erythrocyte morphology. These results demonstrate the capacity of hES to differentiate into mature hematopoietic cells in vitro. Nevertheless, there exist some quantitative and qualitative differences about hematopoietic differentiation between the hES cell lines used. However, we still have to evaluate their capacity to reconstitute hematopoiesis in vivo in an immune deficient mouse model. We will also be interested in developing in vitro methods to expand these hematopoietic precursor cells derived from hES which may be used as a viable source for future cell therapy.

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Research Progress and Application Prospect of IPS Cells

Gene Science and Engineering ◽

10.18063/gse.v1i1.526 ◽

2018 ◽

Vol 1 (1) ◽

Author(s):

Ceng Yiwu

Keyword(s):

Stem Cells ◽

Es Cells ◽

Embryonic Stem ◽

Donor Cell ◽

Ips Cells ◽

New Drugs ◽

Theoretical Research ◽

Research Progress ◽

Ips Cell

Differentiated somatic cells can be reprogrammed into induced pluripotent stem cells (iPS cells) by introducingspecific transcription factors. This technique avoids immune rejection and ethical problems in stem cell research.A great revolution in the fi eld of science. As with embryonic stem cells (ES cells), iPS cells are able to self-renewand maintain undiff erentiated state. In vitro, iPS cells can be induced to diff erentiate into a variety of mature cells,therefore, iPS cells in theoretical research and clinical applications are extremely valuable. IPS cell diff erentiationand transplantation in the treatment of blood diseases have a great use, iPS cells can treat nervous system diseases,to provide in vitro disease model, to study the mechanism of disease formation, screening new drugs and thedevelopment of new to provide a new treatment The The use of iPS cells as a nuclear donor cell, with the appropriatereceptor cells after fusion can be directly obtained transgenic animals. Not only can improve the genetic nature ofanimals, but also can break the boundaries of species and get the new animal traits that cannot achieve by usingtraditional mating methods. The research of iPS cells has been widely concerned, and it is the research hotspot in cellbiology and molecular biology. In this paper, the defi nition of iPS cells, the acquisition of iPS cells, the history ofdevelopment, the signifi cance of research, the progress of research, the application of iPS cells, and the problems ofiPS cells were reviewed.

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Faculty Opinions recommendation of New cell lines from mouse epiblast share defining features with human embryonic stem cells.

Faculty Opinions – Post-Publication Peer Review of the Biomedical Literature ◽

10.3410/f.1088897.542025 ◽

2007 ◽

Author(s):

Stephen Dalton

Keyword(s):

Stem Cells ◽

Embryonic Stem Cells ◽

Cell Lines ◽

Human Embryonic Stem Cells ◽

Embryonic Stem

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Faculty Opinions recommendation of INS(GFP/w) human embryonic stem cells facilitate isolation of in vitro derived insulin-producing cells.

Faculty Opinions – Post-Publication Peer Review of the Biomedical Literature ◽

10.3410/f.13984975.15442093 ◽

2012 ◽

Author(s):

Gordon Weir

Keyword(s):

Stem Cells ◽

Embryonic Stem Cells ◽

Human Embryonic Stem Cells ◽

Embryonic Stem ◽

Insulin Producing Cells

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Faculty Opinions recommendation of CORTECON: a temporal transcriptome analysis of in vitro human cerebral cortex development from human embryonic stem cells.

Faculty Opinions – Post-Publication Peer Review of the Biomedical Literature ◽

10.3410/f.718478232.793498745 ◽

2014 ◽

Author(s):

Vijay Tiwari ◽

Johannes Jung

Keyword(s):

Stem Cells ◽

Cerebral Cortex ◽

Embryonic Stem Cells ◽

Human Embryonic Stem Cells ◽

Transcriptome Analysis ◽

Embryonic Stem ◽

Human Cerebral Cortex ◽

Cerebral Cortex Development

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Rapid Differentiation of Human Embryonic Stem Cells into Testosterone-Producing Leydig Cell-Like Cells In vitro

Tissue Engineering and Regenerative Medicine ◽

10.1007/s13770-021-00359-8 ◽

2021 ◽

Author(s):

Eun-Young Shin ◽

Seah Park ◽

Won Yun Choi ◽

Dong Ryul Lee

Keyword(s):

Stem Cells ◽

Embryonic Stem Cells ◽

Human Embryonic Stem Cells ◽

Embryonic Stem ◽

Male Hypogonadism ◽

Testosterone Levels ◽

Sequence Of Events ◽

Short Period ◽

Molecular Compounds

Abstract Background: Leydig cells (LCs) are testicular somatic cells that are the major producers of testosterone in males. Testosterone is essential for male physiology and reproduction. Reduced testosterone levels lead to hypogonadism and are associated with diverse pathologies, such as neuronal dysfunction, cardiovascular disease, and metabolic syndrome. LC transplantation is a promising therapy for hypogonadism; however, the number of LCs in the testis is very rare and they do not proliferate in vitro. Therefore, there is a need for an alternative source of LCs. Methods: To develop a safer, simple, and rapid strategy to generate human LC-like cells (LLCs) from stem cells, we first performed preliminary tests under different conditions for the induction of LLCs from human CD34/CD73 double positive-testis-derived stem cells (HTSCs). Based on the embryological sequence of events, we suggested a 3-step strategy for the differentiation of human ESCs into LLCs. We generated the mesendoderm in the first stage and intermediate mesoderm (IM) in the second stage and optimized the conditions for differentiation of IM into LLCs by comparing the secreted testosterone levels of each group. Results: HTSCs and human embryonic stem cells can be directly differentiated into LLCs by defined molecular compounds within a short period. Human ESC-derived LLCs can secrete testosterone and express steroidogenic markers. Conclusion: We developed a rapid and efficient protocol for the production of LLCs from stem cells using defined molecular compounds. These findings provide a new therapeutic cell source for male hypogonadism.

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