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During the generation of induced pluripotent stem cell (iPSC) lines from cord blood CD34 cells, a line having complete trisomy of chromosome 1 and deletion of q23 to qTer of chromosome 11 was accidentally developed in our lab. The abnormality was consistently detected even at higher passages. These chromosomal anomalies are known to manifest neurological developmental defects. In order to examine if such defects occur during in vitro differentiation of the cell line, we set up a protocol for neural differentiation. Valproic acid (VPA) was earlier reported by us to enhance neural differentiation of placental mesenchymal stem cells. Here we induced normal and abnormal iPSC lines to neural lineage with/without VPA. Neural differentiation was observed in all 4 sets, but for both the iPSCs lines, VPA sets performed better. The characteristics tested were morphology, neural filament length, detection of neural markers and electrophysiology. In summary, the karyotypically abnormal line exhibited efficient neural differentiation. This iPSC line may serve as a useful tool to study abnormalities associated with trisomy 1 and deletion of q23 to qTer of chromosome 11.
This article was published in the following journal.
Name: Journal of tissue engineering and regenerative medicine
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A growth differentiation factor that plays a role in the neural differentiation, specifically in the retinal development of the EYE.
An early embryonic developmental process of CHORDATES that is characterized by morphogenic movements of ECTODERM resulting in the formation of the NEURAL PLATE; the NEURAL CREST; and the NEURAL TUBE. Improper closure of the NEURAL GROOVE results in congenital NEURAL TUBE DEFECTS.
A glycoprotein of MW 25 kDa containing internal disulfide bonds. It induces the survival, proliferation, and differentiation of neutrophilic granulocyte precursor cells and functionally activates mature blood neutrophils. Among the family of colony-stimulating factors, G-CSF is the most potent inducer of terminal differentiation to granulocytes and macrophages of leukemic myeloid cell lines.
Antigens expressed primarily on the membranes of living cells during sequential stages of maturation and differentiation. As immunologic markers they have high organ and tissue specificity and are useful as probes in studies of normal cell development as well as neoplastic transformation.
A condition characterized by the presence of abnormal quantities of CRYOGLOBULINS in the blood. Upon cold exposure, these abnormal proteins precipitate into the microvasculature leading to restricted blood flow in the exposed areas.
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