Objects of the present invention are to provide a method for directly obtaining pluripotent stem cells which do not have tumorigenic property from body tissue and the thus obtained pluripotent stem cells. The present invention relates to SSEA-3 (+) pluripotent stem cells that can be isolated from body tissue.

The invention provides methods for using Umbilical Cord Lining Stem Cells (ULSCs) to produce therapeutic factors including growth factors, cytokines, chemokines and extracellular matrix components. ULSCs are mesenchymal stem cells isolated from umbilical cord lining. They can be efficiently propagated and expanded in vitro. Under specific conditions ULSCs produce useful therapeutic factors that can be used to treat injuries and degenerative conditions.

Factor rich compositions produced from umbilical cord (UC) mesenchymal stem cells (MSCs) are described. Secretory UC MSCs in serum free culture conditions produce a factor rich conditioned medium which may be concentrated and filtered to obtain clinical grade products.

Disclosed herein include methods and compositions for in vitro culture of three-dimensional expanded pluripotency (EP) structures from pluripotent stem cells. In some embodiments, the method can include generating expanded pluripotent stem cells (EPSCs) and culturing the EPSCs in a composition capable of supporting generation of the EP structure.

The present invention relates to a conditioned medium (CM) which is obtained by culturing, in a liquid culture medium, placental mesenchymal stem cells isolated from the placental tissue of pregnant women who not affected by preeclampsia. The conditioned medium of the present invention includes at least IL-6, IL-8 and MCP-1 proteins. The conditioned medium of the present invention is effective for the therapeutic treatment of preeclampsia.

The presently disclosed subject matter provides a microfluidic device that can simulate capillary blood flow on a fetal side of the device and pooled blood on a maternal side of the device (i.e., intervillous space). The microfluidic device can reconstitute the maternal-fetal interface, can expand the capabilities of cell culture models, and can provide an alternative to current maternal-fetal transfer models.

Described herein are systems, devices, and methods for an extracorporeal, artificial, placenta. In some embodiments, an artificial placenta and amniotic bed system may comprise a control unit, a gas delivery unit, a gas exchange unit or membrane oxygenator, a fluids delivery unit, an amniotic fluid bed, and a human machine interface. In some embodiments, the artificial placenta and amniotic bed systems, devices, and methods described herein may improve survival rates and minimize long-term disabilities in preterm, gestational-age, newborns. In some embodiments, the extracorporeal systems, devices, and methods comprise an artificial network through which oxygen and nutrient-rich blood may flow into a fetus (residing in an amniotic fluid bed), while carbon dioxide and wastes may be removed, thus re-establishing a form of intrauterine placental circulation.

Provided herein are compositions of placenta-derived adherent cell exosomes and methods of making and using the same. In one aspect, provided herein are compositions comprising exosomes produced by and/or derived from placental cells, e.g., placenta-derived adherent cells. In certain embodiments, the exosomes provided herein are produced by placenta-derived adherent cells that have been cultured in vitro for, e.g., 1, 2, 3, 4, 5, 6 or more passages.

Described herein are systems, devices, and methods for an extracorporeal, artificial, placenta. In some embodiments, an artificial placenta and amniotic bed system may comprise a control unit, a gas delivery unit, a gas exchange unit or membrane oxygenator, a fluids delivery unit, an amniotic fluid bed, and a human machine interface. In some embodiments, the artificial placenta and amniotic bed systems, devices, and methods described herein may improve survival rates and minimize long-term disabilities in preterm, gestational-age, newborns. In some embodiments, the extracorporeal systems, devices, and methods comprise an artificial network through which oxygen and nutrient-rich blood may flow into a fetus (residing in an amniotic fluid bed), while carbon dioxide and wastes may be removed, thus re-establishing a form of intrauterine placental circulation.

This invention provides a cell population comprising mesenchymal cells capable of forming a cell sheet that can be spontaneously detached from a substrate. In such cell population comprising mesenchymal cells, the proportion of cells positive for CD324 is 70% or more and the proportion of mesenchymal cells positive for CD90 is 90% or more.