Question: What is the role of thyroid hormone in Stem cell differentiation?

Context:
During T3-dependent amphibian metamorphosis, the digestive tract is extensively remodeled from the larval to the adult form for the adaptation of the amphibian from its aquatic herbivorous lifestyle to that of a terrestrial carnivorous frog. This involves de novo formation of ASCs that requires T3 signaling in both the larval epithelium and nonepithelial tissues.
Our results revealed that T3 induces distinct tissue-specific gene regulation programs associated with the remodeling of the intestine, particularly the formation of the ASCs, and further suggested the existence of potentially many novel stem cell-associated genes, at least in the intestine during development.
BMP signaling is an important modulator of the late differentiation stages in MSC chondrogenesis and the thyroid hormone induces this pathway. 
In addition, thyroid hormone treatment of hiPS-CMs attenuated the fetal gene expression in favor of a more adult-like pattern. 
Exposure of embryos at this developmental stage for 24 h to either a TH antagonist, NH-3, or to tetrabromobisphenol A, a flame retardant and known TH disruptor, differentially modulated the expression of a number of TH target genes implicated in neural stem cell function or neural differentiation. 
In the intestinal epithelium and the retina, TRα1 and TRβ2 are expressed at the level of the precursors where they induce cell proliferation and differentiation, respectively. 
Thyroid hormone signaling acts as a neurogenic switch by repressing Sox2 in the adult neural stem cell niche.
We will discuss observations suggesting that liganded T3 receptor (TR) regulates cell autonomous formation of adult intestinal progenitor cells and that T3 action in the connective tissue is important for the establishment of the stem cell niche.
In general, in vitro stem cell differentiation techniques stimulate a wide range of developmental programs, including thyroid hormone receptor (TR) pathways.
Although no difference of in vitro proliferation of NSCs was observed in the presence of epidermal growth factor, maturation of oligodendrocytes (defined by process number and length) was enhanced in hyperthyroidism, suggesting a more mature state than in control animals. 
Terminal erythroid maturation was significantly improved by adding human serum and thyroid hormone (3,5,3'-triiodothyronine [T3]) to the differentiation medium.
This resulted in highly synchronous differentiation of the cells toward enucleated erythrocytes within 6 days
T(3) alone stimulated neural differentiation in a similar fashion as that seen with RA in both wtES and mES cells. 
Thus, c-erbA/TR appears to act as a binary switch affecting erythroid cell fate: unliganded c-erbA/TR supports growth while ligand-activated c-erbA/TR induces differentiation. 
The thyroid hormone receptor functions as a ligand-operated developmental switch between proliferation and differentiation of erythroid progenitors.
Thyroid hormones induce hemopoietic pluripotent stem cell differentiation toward erythropoiesis 

Answer: Thyroid hormone treatment of Human-induced pluripotent stem cell-derived cardiomyocytes attenuates the fetal gene expression and induces differentiation. Liganded T3 receptor (TR) regulates cell autonomous formation of adult intestinal progenitor cells and that T3 action in the connective tissue is important for the establishment of the stem cell niche. In the intestinal epithelium, TRα1 and TRβ2 are expressed at the level of  stem/progenitor cell populations where they induce cell proliferation and differentiation, respectively.  Thyroid hormone is implicated in neural stem cell function and differentiation and acts as a neurogenic switch in the adult neural stem cell niche. Furthermore, thyroid hormone enhances maturation of oligodendrocyte precursor cells. Thyroid hormones also induce hemopoietic pluripotent stem cell differentiation toward erythropoiesis and  c-erbA/TR appears to act as a binary switch affecting erythroid cell fate: unliganded c-erbA/TR supports growth while ligand-activated c-erbA/TR induces differentiation. Finally, thyroid hormone modulates late differentiation stages of mesenchymal stem cells chondrogenesis via BMP signaling.