ribose/sarcoma

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Poly(ADP-ribose) polymerase 1 binds to Kaposi's sarcoma-associated herpesvirus (KSHV) terminal repeat sequence and modulates KSHV replication in latency.

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During latency, Kaposi's sarcoma-associated herpesvirus (KSHV) is thought to replicate once and to be partitioned in synchrony with the cell cycle of the host. In this replication cycle, the KSHV terminal repeat (TR) sequence functions as a replication origin, assisted by the latency-associated

Ewing sarcoma protein promotes dissociation of poly(ADP-ribose) polymerase 1 from chromatin

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Poly(ADP-ribose) polymerase 1 (PARP1) facilitates DNA damage response (DDR). While the Ewing's sarcoma breakpoint region 1 (EWS) protein fused to FLI1 triggers sarcoma formation, the physiological function of EWS is largely unknown. Here, we investigate the physiological role of EWS in regulating

Poly(ADP-ribose) polymerase turnover alterations do not contribute to PARP overexpression in Ewing's sarcoma cells.

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Ewing's sarcoma (EWS) cells contain significantly higher levels of poly(ADP-ribose) polymerase (PARP) mRNA, protein and enzymatic activities than any other eukaryotic cells. Evidence from our laboratory showed that increased transcription, rather than mRNA stability, contributes to the elevated PARP

Radiation-induced apoptosis of Ewing's sarcoma cells: DNA fragmentation and proteolysis of poly(ADP-ribose) polymerase.

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Ewing's sarcoma (ES) cells express high levels of poly(ADP-ribose) polymerase (PADPRP) and are responsive to killing by ionizing radiation. We have determined that ionizing radiation induced a pronounced but reversible G2-M phase cell cycle arrest that was maximum by 24 h after exposure. Following

Co-regulated expression of dbl and poly(ADP-ribose) polymerase in Ewing's sarcoma cells and dbl-transformed NIH3T3 fibroblasts.

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Poly(ADP-ribose) polymerase (PADPRP) is a ubiquitous enzyme constitutively expressed at low levels in the majority of eukaryotic cells, including most mammalian tumors and tumor-derived cell lines. Overexpression of PADPRP following the introduction of cDNA recombinant constructs into various cell

Expression of the human Bcl-2 increases resistance of Ewing's sarcoma cells to apoptosis and inhibits poly(ADP-ribose) polymerase cleavage induced by radiation.

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We reported previously that Ewing's sarcoma (ES) cells respond to ionizing radiation exposure by arrest in G(2)/M phase and induction of apoptosis which occurs in conjunction with poly(ADP-ribose) polymerase (PARP) proteolytic cleavage. ES cells (A4573 cell line) do not express immunodetectable

Identification of a rearrangement in the 5' upstream region of the poly(ADP-ribose) polymerase pseudogene on chromosome 13 in Ewing's sarcoma cells.

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We have cloned a 3.0 kb SalI-Sau3AI fragment containing 5' upstream sequences of a human poly(ADP-ribose) polymerase (PARR) pseudogene from the Ewing's sarcoma (ES) cell line A4573. The nucleotide sequence of the entire cloned fragment has been determined. Nucleotide sequence homology and Southern

Enhancement of Soft Tissue Sarcoma Cell Radiosensitivity by Poly(ADP-ribose) Polymerase-1 Inhibitors.

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Soft tissue sarcomas (STS) are aggressive tumors with a poor prognosis. Poly(ADP-ribose) polymerase (PARP)-1 inhibitors (PARPi) enhance the cytotoxic effects of radiation. In this study, we evaluated the effect of PARPi on survival and DNA damage of irradiated STS cells. For clonogenic assays, STS

Ewing sarcoma: The clinical relevance of the insulin-like growth factor 1 and the poly-ADP-ribose-polymerase pathway.

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BACKGROUND In the last three decades the outcome for patients with localised Ewing sarcoma (ES) has improved significantly since the introduction of multimodality primary treatment. However, for patients with (extra-) pulmonary metastatic and/or non-resectable relapsed disease the outcome remains

Enhanced poly(adenosine diphosphate ribose) polymerase activity and gene expression in Ewing's sarcoma cells.

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Ewing's sarcoma (ES) is a highly malignant childhood bone tumor and is considered curable by moderate doses of radiotherapy. The addition of chemical inhibitors of the activity of the nuclear enzyme poly(adenosine diphosphate ribose) [poly(ADPR)] polymerase to ES cells in culture results in

Fused in Sarcoma (FUS) in DNA Repair: Tango with Poly(ADP-ribose) Polymerase 1 and Compartmentalisation of Damaged DNA

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The fused in sarcoma (FUS) protein combines prion-like properties with a multifunctional DNA/RNA-binding domain and has functions spanning the regulation of RNA metabolism, including transcription, pre-mRNA splicing, mRNA transport and translation. In addition to its roles in RNA metabolism, FUS is

Poly(ADP-ribose) polymerase inhibitors in Ewing sarcoma.

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OBJECTIVE In 2012, two publications revealed a particular sensitivity of Ewing sarcoma cells to the inhibition of poly(ADP-ribose) polymerase (PARP). This review updates the reader on PARP function, the development of PARP inhibitors (PARPi) and the evidence for targeting PARP in Ewing sarcoma. It

The RNA-binding protein fused in sarcoma (FUS) functions downstream of poly(ADP-ribose) polymerase (PARP) in response to DNA damage.

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The list of factors that participate in the DNA damage response to maintain genomic stability has expanded significantly to include a role for proteins involved in RNA processing. Here, we provide evidence that the RNA-binding protein fused in sarcoma/translocated in liposarcoma (FUS) is a novel

Treatment of breast cancer 2 (BRCA2)-mutant follicular dendritic cell sarcoma with a poly ADP-ribose polymerase (PARP) inhibitor: a case report.

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BACKGROUND Follicular dendritic cell sarcoma is a rare tumour with clinical behaviour covering a spectrum from indolent to aggressive disease. Treatment recommendations are currently based on case reports and small series describing combinations of surgery, chemotherapy and radiotherapy providing

Sensitizing Ewing sarcoma to chemo- and radiotherapy by inhibition of the DNA-repair enzymes DNA protein kinase (DNA-PK) and poly-ADP-ribose polymerase (PARP) 1/2.

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UNASSIGNED DNA-PK and PARP inhibitors sensitize cancer cells to chemo- and radiotherapy. ETS transcription factors (EWS-FLI1) have been described as biomarkers for PARP-inhibitor sensitivity. Sensitivity to single agent PARP inhibitors has so far been limited to homologous recombination repair (HRR)

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