Midbrain dopamine (DA) neurons for engraftment
First Claim
1. An in vitro method for differentiating pluripotent stem cells, comprising exposing a plurality of pluripotent stem cells to at least one inhibitor of TGFβ
- /Activin-Nodal signaling, at least one inhibitor of bone morphogenetic protein (BMP) signaling, at least two activators of Sonic hedgehog (SHH) signaling comprising purmorphamine and SHH C25II, and at least one inhibitor of glycogen synthase kinase 3β
(GSK3β
) signaling that activates wingless (Wnt) signaling,wherein the exposure of the cells to the at least one inhibitor of TGFβ
/Activin-Nodal signaling and the at least one inhibitor of BMP signaling begins on day 0,wherein said cells are exposed to the at least one inhibitor of GSK3β
signaling on the third (3rd) day through the eleventh (11th) day from the initial exposure of the cells to the at least one inhibitor of TGFβ
/Activin-Nodal signaling and the at least one inhibitor of BMP signaling, andwherein said cells are exposed to the at least one inhibitor of TGFβ
/Activin-Nodal signaling, the at least one inhibitor of BMP signaling, the at least two activators of SHH signaling, and the at least one inhibitor of GSK3β
signaling in amounts effective to produce a cell population comprising at least about 10% differentiated cells expressing both forkhead box protein A2 (FOXA2) and LIM homeobox transcription factor 1 alpha (LMX1A).
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Abstract
The present invention relates to the field of stem cell biology, in particular the lineage specific differentiation of pluripotent or multipotent stem cells, which can include, but is not limited to, human embryonic stem cells (hESC) in addition to nonembryonic human induced pluripotent stem cells (hiPSC), somatic stem cells, stem cells from patients with a disease, or any other cell capable of lineage specific differentiation. Specifically described are methods to direct the lineage specific differentiation of hESC and/or hiPSC into floor plate midbrain progenitor cells and then further into large populations of midbrain fate FOXA2+LMX1A+TH+ dopamine (DA) neurons using novel culture conditions. The midbrain fate FOXA2+LMX1A+TH+ dopamine (DA) neurons made using the methods of the present invention are further contemplated for various uses including, but not limited to, use in in vitro drug discovery assays, neurology research, and as a therapeutic to reverse disease of, or damage to, a lack of dopamine neurons in a patient. Further, compositions and methods are provided for differentiating midbrain fate FOXA2+LMX1A+TH+ dopamine (DA) neurons from human pluripotent stem cells for use in disease modeling, in particular Parkinson'"'"'s disease. Additionally, authentic DA neurons are enriched for markers, such as CD142, and A9 type neuronal cells.
67 Citations
14 Claims
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1. An in vitro method for differentiating pluripotent stem cells, comprising exposing a plurality of pluripotent stem cells to at least one inhibitor of TGFβ
- /Activin-Nodal signaling, at least one inhibitor of bone morphogenetic protein (BMP) signaling, at least two activators of Sonic hedgehog (SHH) signaling comprising purmorphamine and SHH C25II, and at least one inhibitor of glycogen synthase kinase 3β
(GSK3β
) signaling that activates wingless (Wnt) signaling,wherein the exposure of the cells to the at least one inhibitor of TGFβ
/Activin-Nodal signaling and the at least one inhibitor of BMP signaling begins on day 0,wherein said cells are exposed to the at least one inhibitor of GSK3β
signaling on the third (3rd) day through the eleventh (11th) day from the initial exposure of the cells to the at least one inhibitor of TGFβ
/Activin-Nodal signaling and the at least one inhibitor of BMP signaling, andwherein said cells are exposed to the at least one inhibitor of TGFβ
/Activin-Nodal signaling, the at least one inhibitor of BMP signaling, the at least two activators of SHH signaling, and the at least one inhibitor of GSK3β
signaling in amounts effective to produce a cell population comprising at least about 10% differentiated cells expressing both forkhead box protein A2 (FOXA2) and LIM homeobox transcription factor 1 alpha (LMX1A). - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
- /Activin-Nodal signaling, at least one inhibitor of bone morphogenetic protein (BMP) signaling, at least two activators of Sonic hedgehog (SHH) signaling comprising purmorphamine and SHH C25II, and at least one inhibitor of glycogen synthase kinase 3β
Specification