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9 papers found.
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RNA-splicing factor SART3 regulates translesion DNA synthesis

Translesion DNA synthesis (TLS) is one mode of DNA damage tolerance that uses specialized DNA polymerases to replicate damaged DNA. DNA polymerase η (Polη) is well known to facilitate TLS across ultraviolet (UV) irradiation and mutations in POLH are implicated in skin carcinogenesis. However, the basis for recruitment of Polη to stalled replication forks is not completely...

FANCD2 and REV1 cooperate in the protection of nascent DNA strands in response to replication stress

REV1 is a eukaryotic member of the Y-family of DNA polymerases involved in translesion DNA synthesis and genome mutagenesis. Recently, REV1 is also found to function in homologous recombination. However, it remains unclear how REV1 is recruited to the sites where homologous recombination is processed. Here, we report that loss of mammalian REV1 results in a specific defect in...

Surface plasmon optical study of the interfacial phase transition of elastinlike polypeptide grafted on gold

0 Kimberly Trabbic-Carlson and Ashutosh Chilkoti Department of Biomedical Engineering, Duke University , Box 90281, Durham, North Carolina 27708 1 Fei Xu and Huang Min Joon Institute of Materials

Pregnane X Receptor as a Therapeutic Target to Inhibit Androgen Activity

The androgen-androgen receptor signaling pathway plays an important role in the pathogenesis of prostate cancer. Accordingly, androgen deprivation has been the most effective endocrine therapy for hormone-dependent prostate cancer. Here, we report a novel pregnane X receptor (PXR)-mediated and metabolism-based mechanism to reduce androgenic tone. PXR is a nuclear receptor...

Urinary Excretion of Codeine and Morphine following the Administration of Codeine-Containing Cold Syrup

The concentrations of codeine ([C]) and morphine ([M]) excreted in urine obtained from nine subjects at various time intervals after the ingestion of 10–40 mg of both simple and compound codeine doses three times per day for three days were determined by gas chromatography-mass spectrometry analysis. Four distinct [C]/[M] distribution patterns (phases) were observed: a, [C] > [M...

The Role of Polymeric Immunoglobulin Receptor in Inflammation-Induced Tumor Metastasis of Human Hepatocellular Carcinoma

Expression of the polymeric immunoglobulin receptor (pIgR), a transporter of polymeric IgA and IgM, is commonly increased in response to viral or bacterial infections, linking innate and adaptive immunity. Abnormal expression of pIgR in cancer was also observed, but its clinical relevance remains uncertain.

Total Morphine Stability in Urine Specimens Stored under Various Conditions

The stability of total morphine in urine stored under various conditions was studied using control and experimental specimens. Samples in the control group were prepared using drug-free urine spiked with morphine at three concentration levels (300, 1000, and 2500 ng/mL), each with the pH adjusted to 5.5, 6.5, and 7.5. Samples in the experimental group came from 20 alleged heroin...

Overexpression of MUC15 activates extracellular signal-regulated kinase 1/2 and promotes the oncogenic potential of human colon cancer cells

Mucins play a key role in tumorigenesis. MUC15 is a membrane-bound mucin and the MUC15 messenger RNA (mRNA) has been detected in various organs. However, its role in tumor malignancy is still unclear. This study was to investigate the MUC15 expression in colorectal tumors and the role of MUC15 in colon cancer cells. We found that the mRNA expression of MUC15 was significantly...