esophageal neoplasms/phosphatase

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Expression of protein tyrosine phosphatases and its significance in esophageal cancer.

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Expression of mRNA protein tyrosine phosphatases (PTPs) was surveyed in an esophageal cancer cell line by RT-PCR using degenerate primers. The mRNAs for eight kinds of PTPs were expressed in the cell line. We examined mRNA expression of these PTPs in 12 cases of esophageal cancer by Northern

Inhibition of microRNA-21 increases radiosensitivity of esophageal cancer cells through phosphatase and tensin homolog deleted on chromosome 10 activation.

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The radioresistance of esophageal squamous cell carcinoma is a great obstacle to treatment. Although it has been demonstrated that microRNA-21 (miR-21) can act as an 'oncogene' in esophageal squamous cell carcinoma, its role in radioresistance remains unexplored. The aims of this study were to

MicroRNA-20b (miR-20b) Promotes the Proliferation, Migration, Invasion, and Tumorigenicity in Esophageal Cancer Cells via the Regulation of Phosphatase and Tensin Homologue Expression.

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Increasing evidence has indicated that many microRNAs participate in the development and progression of esophageal cancer and gene expression regulation. MicroRNA-20b (miR-20b) has been reported to be aberrantly expressed in various cancers, but its exact role in esophageal cancer cells remains

[Expression of placental alkaline phosphatase in esophageal cancer cell line Eca109].

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The expression and property of alkaline phosphatase (ALP) in Eca109 cells, a cell line derived from human esophageal carcinoma were studied with specific inhibition assay and poly-acrylamide gel electrophoresis. The results showed that ALP of Eca109 cells was heat stable and was strongly inhibited

Disseminated epithelial tumor cells in bone marrow of patients with esophageal cancer: detection and prognostic significance.

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Minimal residual disease in patients with operable esophageal cancer is frequently missed by current noninvasive tumor staging. Here we applied an immunocytochemical cytokeratin assay that allows identification of individual esophageal carcinoma cells disseminated to bone marrow. Prior to therapy,

Postoperative hyperbilirubinemia after resection of thoracic esophageal cancer.

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The rate of occurrence of postoperative hyperbilirubinemia (PHB) following esophagectomy for thoracic esophageal cancer was 67%, 115/171 cases, which was significantly higher than those following total gastrectomy (28%, 40/144 cases) and colectomy (12%, 7/59 cases). Among the operative procedures,

Scoring system for predicting response to chemoradiotherapy, including 5-Fluorouracil and platinum, for patients with esophageal cancer.

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We have retrospectively evaluated clinical data before therapy to enable reliable prediction of the response of esophageal cancer to chemoradiotherapy (CRT). We analyzed 108 patients who received 5-fluorouracil and platinum combined with 60 Gy radiation for esophageal cancer. Factors significantly

Inhibition of protein serine/threonine phosphatases by fumonisin B1, a mycotoxin.

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Fumonisin B1 (FB1), a mycotoxin produced by the fungus Fusarium moniliforme, which is a common contaminant of corn, is suspected to be a cause of human esophageal cancer. FB1 is hepatotoxic and hepatocarcinogenic in rats, and although the mechanisms involved have not been clarified, the latter is

The adenovirus-mediated transfer of PTEN inhibits the growth of esophageal cancer cells in vitro and in vivo.

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The development and progression of esophageal cancer is associated with multiple alterations in the genome, including loss of the tumor suppressor phosphatase and tensin homolog deleted from the chromosome 10 (PTEN) gene. The purpose of this study was to determine the effects of adenovirus-mediated

siRNA-mediated downregulation of TC21 sensitizes esophageal cancer cells to cisplatin.

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OBJECTIVE To determine the functional significance of TC21 in esophageal squamous cell carcinoma (ESCC). METHODS TC21 siRNA transfection was carried out using Hyperfectamine to knock down TC21, and transcripts were analyzed by reverse transcription-polymerase chain reaction and protein by Western

Effect and mechanism of microRNA-10b on proliferation and invasion of esophageal cancer cells.

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MicroRNA (miR)-10b is highly expressed in esophageal cancer tissues and is associated with poor prognosis of esophageal cancer. However, the role and mechanism of miR-10b in esophageal cancer cells remains unclear, therefore, the present study aimed to investigate this. Esophageal cancer cells, TE-1

Overexpression of CDC25B overrides radiation-induced G2-M arrest and results in increased apoptosis in esophageal cancer cells.

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CDC25B phosphatase plays a key role in controlling G2-M progression by dephosphorylating two inhibitory residues of CDC2 and also has been suggested to have an oncogenic property. In this study, we investigated the effect of CDC25B overexpression on radiation-induced G2-M arrest and radiation

Aberrant promoter 2 methylation‑mediated downregulation of protein tyrosine phosphatase, non‑receptor type 6, is associated with progression of esophageal squamous cell carcinoma.

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The human protein tyrosine phosphatase, non‑receptor type 6 (PTPN6) gene is located on chromosome 12p13 and encodes an Mr 68,000 non‑receptor type protein‑tyrosine phosphatase. The PTPN6 gene has been considered as a candidate tumor suppressor in hematological and solid malignancies, and promoter

Overexpression of miR-200c induces chemoresistance in esophageal cancers mediated through activation of the Akt signaling pathway.

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OBJECTIVE To determine the relationship between resistance to chemotherapy and microRNA (miRNA) expression in esophageal cancer, we focused on miRNAs known to be associated with maintenance of stem cell function. METHODS Using 98 formalin-fixed, paraffin-embedded samples obtained from patients with

Genetic variations in the PI3K/PTEN/AKT/mTOR pathway are associated with clinical outcomes in esophageal cancer patients treated with chemoradiotherapy.

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OBJECTIVE The phosphoinositide-3-kinase (PI3K), phosphatase and tensin homolog (PTEN), v-akt murine thymoma viral oncogene homolog (AKT), and mammalian target of rapamycin (mTOR) signaling pathway has been implicated in resistance to several chemotherapeutic agents. In this retrospective study, we

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