Abstract:
:Poly(ADP-ribose) is a naturally occurring nuclear macromolecule resembling nucleic acids. It is synthesized from NAD+ on histones and a few other nuclear proteins. Its function, although not completely understood, might be to alter chromatin structure and to regulate the activity of proteins involved in the metabolism of DNA strand breaks such as ligase II, and topoisomerase I. In addition, poly(ADP-ribose) modifies proteins involved in gene expression such as acetylated histones. HMG proteins, and T antigen. The enzyme poly(ADP-ribose) polymerase responsible for this modification has the unique property of requiring nicks or free ends on the DNA for its activity and of being automodified. The automodified enzyme, presumably found at the vicinity of DNA strand breaks at damaged chromatin sites, could remove histones from DNA and attract enzymes that have an affinity for poly(ADP-ribose) such as ligase II or poly(ADP-ribose) glycohydrolase, the polymer-degrading enzyme. Alterations in chromatin structure alter gene expression and seem to be involved in repair, replication, and recombination and in changing DNA superhelical density, intermediate steps in molecular carcinogenesis. Experiments with cells in culture and laboratory animals show that inhibition of poly(ADP-ribosylation) alters transformation and tumorigenicity brought about by a great number of carcinogenic agents. Cancer can be caused by the accumulation of unrepaired DNA strand breaks in the cell accelerating gene rearrangements, deletions, insertions and amplifications. Repair of DNA strand breaks shows an absolute dependence upon the rapid synthesis and degradation of poly(ADP-ribose). The polymer has a very short half life indeed. Data are reviewed on changes in chromatin structure and function caused by histone and nonhistone poly(ADP-ribosylation). The link of this modification to transformation, tumorigenesis, development, replication and gene expression is examined. A model is proposed to explain the effect of poly(ADP-ribosylation) on chromatin structure at the molecular level. Mono- and oligo(ADP-ribosylated) histones present in nuclei under physiological conditions are proposed to functions, like acetylated histones, in maintaining chromatin loops into transcriptionally active structures. On the other hand, poly(ADP-ribosylated) histones and poly(ADP-ribosylated) enzymes such as DNA and RNA polymerases, suggested to be modified from in vitro studies, might only appear in cells that have been heavily damaged by carcinogen. Their function might be to remove histones from DNA in order to facilitate repair and to shut down transcription and replication.
journal_name
Anticancer Resjournal_title
Anticancer researchauthors
Boulikas Tsubject
Has Abstractpub_date
1991-03-01 00:00:00pages
489-527issue
2eissn
0250-7005issn
1791-7530journal_volume
11pub_type
杂志文章,评审abstract:BACKGROUND:Tenascin-C (Tn-C) is an extracellular matrix protein with growth-, invasion- and angiogenesis-promoting activities. It is up-regulated in tumorigenesis and has been suggested to correlate with prognosis in various carcinomas, but its significance in squamous cell carcinoma of the head and neck remains unknow...
journal_title:Anticancer research
pub_type: 杂志文章
doi:
更新日期:2003-05-01 00:00:00
abstract::The interleukins (IL)-6 and -10 and heat shock proteins (HSP) have an important role in the host-tumor interaction and in tumor bulk. HSP-90 may have a regulatory role in cytokine biosynthesis and prognostic value in some tumors. To define the role of IL-6, IL-10 and HSP-90 in prostate cancer progression the immunohis...
journal_title:Anticancer research
pub_type: 杂志文章
doi:
更新日期:2006-09-01 00:00:00
abstract:BACKGROUND:In a previous study we compared the influence of several growth factors on cancer cells in culture and observed that transforming growth factor-beta (TGF-beta) enhanced the invasiveness of several breast cancer cell lines. The objective of the present study was to determine the influence of three unique anti...
journal_title:Anticancer research
pub_type: 杂志文章
doi:
更新日期:2002-01-01 00:00:00
abstract:AIM:To determine the maximally tolerated dose (MTD), recommended phase II dose (RPTD) and toxicity profile of gemcitabine plus irinotecan combination. PATIENTS AND METHODS:Thirty-nine evaluable patients with advanced solid tumors were treated with gemcitabine (Gem) and irinotecan (Iri) on days 1, 8 and 15 of a 28-day ...
journal_title:Anticancer research
pub_type: 杂志文章
doi:
更新日期:2009-12-01 00:00:00
abstract:BACKGROUND:Epithelioid haemangioendothelioma (EHE) is a rare vascular tumour, which can arise at any site. There is little published data about the management of these tumours. PATIENTS AND METHODS:A retrospective review of patients with histologically-proven EHE presenting to the Royal Marsden Hospital from January 1...
journal_title:Anticancer research
pub_type: 杂志文章
doi:
更新日期:2015-01-01 00:00:00
abstract:BACKGROUND/AIM:Recent progress with BRAF and immune checkpoint inhibitors has dramatically changed the treatment landscape of metastatic melanoma (MM). The limited duration of responses to new agents, however, justifies the, still important, role of chemotherapy in the management of MM. This study prospectively explore...
journal_title:Anticancer research
pub_type: 杂志文章
doi:
更新日期:2015-02-01 00:00:00
abstract::The time course and characteristics of the tumor marker CASA (Cancer Associated Serum Antigen) during the menstrual cycle were analysed. We investigated whether hormonal influences in women and the score of this tumor marker ought to be considered in diagnosis. It could be demonstrated that CASA is not influenced by p...
journal_title:Anticancer research
pub_type: 杂志文章
doi:
更新日期:1997-07-01 00:00:00
abstract:AIM:To evaluate the role of radiotherapy alone or combined with chemotherapy in the treatment of recurrent vulvar cancer, emphasising the prognostic factors and outcomes. MATERIALS AND METHODS:Twenty women with loco-regional recurrence of vulvar carcinoma were retrospectively reviewed. Eleven patients were managed wit...
journal_title:Anticancer research
pub_type: 杂志文章
doi:
更新日期:2003-05-01 00:00:00
abstract:BACKGROUND:Viscum album agglutinin-1 (VAA-1) is assumed to be the biologically most active ingredient of misteltoe extracts that are often used as adjuvant cancer therapy. To develop new approaches for lung cancer treatment, we evaluated the antineoplastic activity of VAA-1 alone and in combination with other chemother...
journal_title:Anticancer research
pub_type: 杂志文章
doi:
更新日期:2001-07-01 00:00:00
abstract:BACKGROUND/AIM:Sarcoma of the oral cavity is rare accounting for around 1% of all malignant oral tumors. The purpose of this study was to find important prognostic factors for patients with oral sarcoma. PATIENTS AND METHODS:The study included 1,643 patients examined from April 1980 to March 2010 at the Departments of...
journal_title:Anticancer research
pub_type: 杂志文章,多中心研究
doi:
更新日期:2015-08-01 00:00:00
abstract::The relationship between serum and cytosolic levels of carcinoembryonic (CEA), squamous-cell carcinoma (SCC) and CA125 antigens was determined in 122 patients with non-small cell lung cancer. A pronounced serum-cytosol gradient and a high degree of dispersion in the distribution of serum and cytosol marker concentrati...
journal_title:Anticancer research
pub_type: 杂志文章
doi:
更新日期:1995-11-01 00:00:00
abstract::The NB rat prostate adenocarcinoma model is one in which microscopic carcinoma can be induced via the use of testosterone and estrogen silastic implants. There is an incidence of large, grossly-positive tumors; which approaches 10% to 15%. Seventy-three percent of the animals subjected to this induction method for per...
journal_title:Anticancer research
pub_type: 杂志文章
doi:
更新日期:1984-07-01 00:00:00
abstract::Reduction of nitroblue tetrazolium by blood monocytes was significantly increased following post-operative radiation therapy for breast cancer. Attachment and ingestion of yeast particles by monocytes was not affected. Exposure of purified monocytes in vitro to 13 Gy did not significantly affect NBT reduction of yeas...
journal_title:Anticancer research
pub_type: 杂志文章
doi:
更新日期:1982-07-01 00:00:00
abstract::Proteoglycan epitopes recognized by poly- or monoclonal antibodies were studied at the cell surface of 3LL murine tumor cell lines with different metastatic capacity. A decreased expression of heparan sulphate and chondroitin sulphate core protein epitopes was observed in the highly metastatic variant HM compared to t...
journal_title:Anticancer research
pub_type: 杂志文章
doi:
更新日期:1990-05-01 00:00:00
abstract:BACKGROUND:Breast cancer (BC) is the most common cancer in women, and the hormone receptor status is one of the most important prognostic factors in patients with BC. The aim of this study was to establish whether a relationship exists between the hormone receptor rate and the main classic risk factors in patients with...
journal_title:Anticancer research
pub_type: 杂志文章
doi:
更新日期:2008-01-01 00:00:00
abstract:AIM:The aim of the present study was to evaluate how treatment with everolimus changes readouts of the pulmonary function test (PFT) in patients with metastatic renal cell carcinoma (mRCC). We also attempted to determine whether changes of PFT or everolimus-associated non-infectious pneumonitis (NIP) might affect the e...
journal_title:Anticancer research
pub_type: 杂志文章
doi:
更新日期:2014-10-01 00:00:00
abstract:BACKGROUND/AIM:This study's aim was to investigate the safety and effectiveness of asunaprevir and daclatasvir treatment for recurrent hepatitis C virus (HCV) infection in transplant recipients. The study cohort comprised 14 transplant recipients with recurrent hepatitis C who were receiving asunaprevir and daclatasvir...
journal_title:Anticancer research
pub_type: 杂志文章
doi:10.21873/anticanres.12885
更新日期:2018-09-01 00:00:00
abstract:BACKGROUND:Cancer of the oesophagus is the most common gastrointestinal malignancy in South African blacks. The aim of this study was to determine the reversible and irreversible lipid peroxidation in cancer of the oesophagus; a feature that has not been assessed before in this or other cancer tissue. METHODS:Biopsies...
journal_title:Anticancer research
pub_type: 杂志文章
doi:
更新日期:1998-03-01 00:00:00
abstract::Prostatic 25-hydroxyvitamin D-1alpha-hydroxylase (1alpha-OHase) is up-regulated by epidermal growth factor (EGF) and down-regulated by 1alpha,25-dihydroxyvitamin D [1alpha,25(OH)2D] at the promoter level in an autocrine/paracrine fashion, suggesting that local production of 1alpha,25(OH)2D could provide an important c...
journal_title:Anticancer research
pub_type: 杂志文章
doi:
更新日期:2008-07-01 00:00:00
abstract::Growth inhibitory activity of YM881 (SMANCS) against 3 human cultured cell lines and one rat cultured cell line derived from glioma cells was assessed quantitatively. YM881 showed potent cytotoxicity against all glioma cell lines tested; the IC50 of this drug was 1.9-8.4 micrograms/ml. YM881 may be classified as a con...
journal_title:Anticancer research
pub_type: 杂志文章
doi:
更新日期:1991-11-01 00:00:00
abstract:BACKGROUND:Since the anti-HER2 monoclonal antibody trastuzumab made its triumphant advance into breast cancer therapy, new selective agents, including pan-HER inhibitors are entering clinical practice. MATERIALS AND METHODS:This study investigates the expression of the four HER-family members, HER1-4, in 48 primary br...
journal_title:Anticancer research
pub_type: 杂志文章
doi:
更新日期:2006-11-01 00:00:00
abstract:BACKGROUND:Transforming growth factor beta (TGF-beta) plays a complex role in breast carcinogenesis. Initially functioning as a tumor suppressor, this cytokine later contributes to the progression of malignant cells by enhancing their invasive and metastatic potential as well as suppressing antitumor immunity. The purp...
journal_title:Anticancer research
pub_type: 杂志文章
doi:
更新日期:2009-06-01 00:00:00
abstract::The magnetic resonance (MR) findings in malignant melanoma of soft tissues, also called clear cell sarcoma of tendons and aponeuroses, have been described as a focal abnormality with a specific MR pattern of increased signal intensity (relative to normal muscle) on T1 weighted sequences and variably decreased signal i...
journal_title:Anticancer research
pub_type: 杂志文章,评审
doi:
更新日期:2000-09-01 00:00:00
abstract::1-(phenylmethyl)-4,7,10-tris-[(4'methylphenyl)-sulfonyl]-1,4,7, 10-tetraazacyclododecane proved to possess potent in vivo antineoplastic and in vitro cytotoxicity in murine and human tissue cultured cells. In Tmolt3 leukemic cells 1-(phenylmethyl)-4,7,10-tris-[(4'methylphenyl)sulfonyl]-1,4,7, 10-tetraazacyclododecane ...
journal_title:Anticancer research
pub_type: 杂志文章
doi:
更新日期:1997-03-01 00:00:00
abstract:BACKGROUND/AIM:Glioma-associated oncogene 1 (GLI1) is an important transcription factor in the hedgehog signalling pathway and tumour formation. We evaluated the clinical significance of GLI1 expression as a prognostic factor in patients with locally advanced gastric cancer (GC). PATIENTS AND METHODS:GLI1 expression l...
journal_title:Anticancer research
pub_type: 杂志文章
doi:10.21873/anticanres.14599
更新日期:2020-10-01 00:00:00
abstract::The published literature describing the spectrum of resistance and cross-resistance to cytotoxic agents by human and murine tumour cell lines maintained in long-term culture is reviewed. The data available demonstrate that for many cytotoxic agents, especially those of higher molecular weight, cross-resistance is prop...
journal_title:Anticancer research
pub_type: 杂志文章
doi:
更新日期:1989-07-01 00:00:00
abstract:BACKGROUND:The cisplatin-pemetrexed and cisplatin-gemcitabine combinations are considered the standard treatment for malignant pleural mesothelioma. The purpose of this study was to examine the efficacy of gemcitabine plus docetaxel in the first-line setting, as this combination has not been investigated in mesotheliom...
journal_title:Anticancer research
pub_type: 杂志文章
doi:
更新日期:2009-08-01 00:00:00
abstract:BACKGROUND:In patients with melanoma, early dissemination via lymphatic and hematogenous routes is frequently seen. Thus, besides clinical follow-up examination and imaging, reliable melanoma-specific serological tumor markers are needed. PATIENTS AND METHODS:We retrospectively compared two serum markers for melanoma,...
journal_title:Anticancer research
pub_type: 杂志文章
doi:10.21873/anticanres.11918
更新日期:2017-09-01 00:00:00
abstract:BACKGROUND/AIM:Previous genetic and morphologic characterisation of mucinous tubular and spindle cell carcinoma (MTSCC) have yielded controversial results. The aim of this study was to explain the phenotypic heterogeneity of MTSCC diagnosed by genetic means. MATERIALS AND METHODS:We analyzed 7 MTSCC by array CGH and m...
journal_title:Anticancer research
pub_type: 杂志文章
doi:10.21873/anticanres.11432
更新日期:2017-03-01 00:00:00
abstract::Inv(3)(q21q26)/t(3;3)(q21;q26) is a feature of a distinctive entity of acute myeloid leukemia (AML) associated with normal or elevated platelet count, atypical megakaryocytes and multilineage dysplasia in the bone marrow, as well as minimal to no response to chemotherapy and poor clinical outcome. The presence of an i...
journal_title:Anticancer research
pub_type: 杂志文章
doi:
更新日期:2013-02-01 00:00:00