Endocrine Abstracts

Introduction: Cells with stem-like properties have been reported in benign and malignant thyroid diseases, and can be propagated by culturing them as non-adherent spheres.Design: Aim of the present study was to widely characterize the stem-like cells in tumor and normal thyroid tissues and in the corresponding in vitro-cultured thyrospheres, and to investigate in vivo the proangiogenic potential of thyrospheres in a zebrafish model....

Parathyroid carcinoma is a rare cause of primary hyperparathyroidism. Though the loss of the oncosuppressor HRPT2 gene product, parafibromin, has been involved in the hyperparathyroidism-jaw tumor syndrome and in a consistent set of sporadic parathyroid carcinomas, parathyroid carcinogenesis remains obscure. MicroRNAs (miRNAs) are a new class of small, non-coding RNAs implicated in embryonic development and cancer. A deregulated miRNA can induce the aberrant expression ...

The embryonic transcription factor TBX1 plays a critical role in cell differentiation during organogenesis of the parathyroid glands. Here we demonstrated that TBX1 mRNA and protein were detected in human adult normal parathyroid tissues (n=3). Immunostaining showed that TBX1 protein was expressed in endothelial CD31+, alfa-SMA+ cells. By contrast, TBX1 mRNA and protein was expressed at higher levels in parathyroid typical adenomas (n=23), where TBX1 staining was...