Endocrine Abstracts

One of the pathways of DTC dissemination is the lymphatic system, however the molecular basis of this process is still unknown. One of the key regulators of lymphangiogesis is Prospero homeobox 1 (Prox1) specifically expressed in LEC and in some human cancers. The present study investigates the expression and function Prox1 in biology of differentiated cancer cells.Studies were performed in a series of thyroid cancer FTC and PTC cell lines. Protein and t...

Podoplanin (PDPN), a mucine type transmembrane glycoprotein specific to lymphatic system is expressed in a variety of human tumors and regarded as a factor promoting tumor progression. In a recent work, we found PDPN expression in tumor cells of 40% of papillary thyroid carcinomas (PTC), however it role remains unclear. The purpose of this study was to elucidate the molecular role of PDPN in the biology of thyroid cancer cells.PDPN gene and prot...

Introduction: The differentiated thyroid cancer (DTC) is the most frequent endocrine malignancy with the incidence increasing worldwide. Although, DTCs are considered to be mostly indolent lesions, the proportion of patients develop metastases. Therefore, identification of molecular factors that are involved in thyroid tumour progression might help to better understand the mechanism of thyroid cancer metastasis. In the present study we examine the role of the transcription fac...

Thyroid cancer (TC) has one of the fastest increasing incidences worldwide and primarily involves papillary thyroid cancer (PTC). Cancer cells have numerous mechanisms that govern drug resistance, among which activation of multidrug resistance (MDR) genes encoding ABC efflux pumps plays an important role. Acquisition of drug resistance by TC cells is becoming a significant obstacle to effective therapy, leading to insensitivity to classical chemotherapeutics, but also to speci...

Introduction: Podoplanin (PDPN) is a transmembrane protein linked with metastases of various cancers, including papillary thyroid carcinoma (PTC). PDPN is significantly upregulated in PTC specimens and PTC- derived cell lines: TPC1 and BCPAP, harboring RET/PTC and BRAF V600E alterations, respectively. We observed that depletion of PDPN impairs migration of TPC1 cells, but surprisingly, augments metastases of BCPAP cells. To elucidate this phenomenon we aimed to further investi...