Abstract
TRF2 is a ubiquitous protein that protects telomeres in the nucleus. We found that TRF2 was present at the peripheral nerve axons and the brain neuroglial cell processes extensively. It was in the cytoplasmic membrane as well as nuclear fractions, but not in the soluble cytoplasmic fraction of SH-SY5Y neuroblastoma cells. TRF2 was up-regulated in P19 embryonal carcinoma cells at the early stage of induced neural differentiation with retinoic acid treatment. Upon transfection, TRF2-expressing COS cells often produced neurite-like long cytoplasmic processes. TRF2 is a component of neuroglial cells and appears to be involved in the cytoplasmic process formation that is necessary for neural differentiation.
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