Cell Line Generation: Embryonic Stem Cell
Restoring vision by sheet transplants of retinal progenitors and retinal pigment epithelium (RPE) derived from human embryonic stem cells (hESCs)
There is currently no effective treatment to restore or improve vision for patients suffering from incurable blinding diseases such as dry age-related macular degeneration and retinitis pigmentosa, which need both new photoreceptors and retinal pigment epithelium. However, a unique method to transplant fetal retinal progenitor sheets together with its supporting retinal pigment epithelium (RPE) has […]
Understanding the status of the X chromosomes in human ESCs and preimplantation embryos
Human embryonic stem cells (hESCs) are able to divide indefinitely and under the proper conditions, can essentially become any cell in the human body. They are derived from the developing human embryo and carry great promise for regenerative medicine. However, these cells demonstrate an instability surrounding the state of the X chromosome. Male (XY) cells […]
Retinal progenitor cells for treatment of retinitis pigmentosa
The targeted disease is retinitis pigmentosa (RP), a severe form of blindness that often runs in families, but other times arises spontaneously from genetic errors. This disease is not overly common, yet represents an attainable near term target for stem cell therapy for a number of reasons: 1) RP destroys the light detecting cells of […]
Stem cell based small molecule therapy for Alzheimer’s disease
Over 6 million people in the US suffer from AD. There are no drugs that prevent the death of nerve cells in AD, nor has any drug been identified that can stimulate their replacement. Even if nerve cells could be replaced, the toxic environment of the brain will kill them unless they are protected by […]
Correlated time-lapse imaging and single cell molecular analysis of human embryo development
We understand little about human development especially at the earliest stages. Yet human developmental biology is very important to stem cell biology and regenerative medicine for two reasons: 1) Understanding human developmental pathways especially of embryonic differentiation will inform our efforts to derive pluripotent stem cells and differentiate them to stable progenitors that are suitable […]
Enhancer-mediated gene regulation during early human embryonic development
Less than 2% of the human genome encodes protein coding genes. But many trait-specific and disease specific mutations seem to map away from such coding sequences. This paradox is partially resolved by observation that some of the noncoding sequences are involved in regulation of when and where in the developing organism genes are to be […]
Homologous recombination in human pluripotent stem cells using adeno-associated virus.
Since their discovery in 1998, human embryonic stem cells (hESCs) have been considered to hold great potential for the treatment of many currently incurable diseases. Possibly the most exciting application of hESC in the clinic is in the arena of regenerative medicine where hESC-derived cell populations are used to replace diseased, damaged or dead tissues. […]
Cellular tools to study brain diseases affecting synaptic transmission
There is a group of brain diseases that are caused by functional abnormalities. The brains of patients afflicted with these diseases which include autism spectrum disorders, schizophrenia, depression, and mania and other psychiatric diseases have a normal appearance and show no structural changes. Neurons, the cellular units of the brain, function by making connections (or […]
Site-specific integration of Lmx1a, FoxA2, & Otx2 to optimize dopaminergic differentiation
The objective of this study is to develop a new, optimized technology to obtain a homogenous population of midbrain dopaminergic (mDA) neurons in a culture dish through neuronal differentiation. Dopaminergic neurons of the midbrain are the main source of dopamine in the mammalian central nervous system. Their loss is associated with one of the most […]
A hESc-based Development Candidate for Huntington’s Disease
Huntington’s disease (HD) is a devastating degenerative brain disease with a 1 in 10,000 prevalence that inevitably leads to death. These numbers do not fully reflect the large societal and familial cost of HD, which requires extensive caregiving. HD has no effective treatment or cure and symptoms unstoppably progress for 15-20 years, with onset typically […]