Photodynamic inactivation of cancer cells in vitro. Effect of irradiation temperature and dose fractionation.

abstract：:Monoclonal antibodies were produced and characterized in order to allow the monitoring of the urinary excretion of six modified nucleosides. The specificity of each antibody was determined and competitive solid-phase enzyme-linked immunoassays were designed, the sensitivity of which lay in the pmol range. Detection an...

journal_title：Cancer letters

authors： Reynaud C,Bruno C,Boullanger P,Grange J,Barbesti S,Niveleau A

更新日期：1992-01-31 00:00:00

abstract：:Expression of cyclooxygenase (COX)-2 protein in preneoplastic and neoplastic lung lesions induced by the administration of 2000 ppm of N-nitrosobis(2-hydroxypropyl)amine (BHP) in the drinking water to Wistar male rats, was examined immunohistochemically. The majority of alveolar/bronchiolar adenomas (ADs) and all aden...

journal_title：Cancer letters

authors： Kitayama W,Denda A,Yoshida J,Sasaki Y,Takahama M,Murakawa K,Tsujiuchi T,Tsutsumi M,Konishi Y

更新日期：2000-02-01 00:00:00

abstract：:In vitro metabolism of dimethylnitrosamine (DMN) by liver microsomal fractions of hamster, rat and chicken revealed that the three species under certain assay conditions, were capable of metabolizing DMN at different rates (hamster greater than rat greater than chicken). The magnitude of the demethylase activity was f...

journal_title：Cancer letters

authors： Prasanna HR,Lotlikar PD,Brandt C,Magee PN

更新日期：1985-02-01 00:00:00

abstract：:One of the most promising substances used in photodynamic therapy (PDT) is 5-aminolevulinic acid (ALA), which induces endogenous synthesis and accumulation of porphyrins in malignant cells. In this paper we have shown that both topical and intratumoral administration of ALA in a subcutaneously implanted mammary carcin...

journal_title：Cancer letters

authors： Casas A,Fukuda H,Meiss R,Batlle AM

更新日期：1999-07-01 00:00:00

abstract：:Acquired resistance to mechanisms of programmed cell death is one of the hallmarks of cancer. Human melanoma, in advanced stage, is hardly curable, due to development of several strategies that impair apoptosis induced by the death receptor and the mitochondrial pathways of apoptosis. Among these apoptosis escape stra...

journal_title：Cancer letters

authors： Anichini A,Mortarini R,Sensi M,Zanon M

更新日期：2006-07-18 00:00:00

abstract：:The mitochondrial genetic system is indispensable for the biosynthesis of the enzyme complexes involved in aerobic energy generation. Tetracyclines inhibit the expression of only the mitochondrial genes because they specifically block mitochondrial protein synthesis. A salient feature is that this inhibition occurs at...

journal_title：Cancer letters

authors： Kroon AM,Dontje BH,Holtrop M,Van den Bogert C

更新日期：1984-11-01 00:00:00

abstract：:The thiol N-acetylcysteine (NAC), a precursor of intracellular glutathione (GSH), efficiently prevented the induction of lung tumors in Swiss albino mice, when supplemented to the diet (0.2%) both before and after an i.p. injection of the carcinogen urethan (ethyl carbamate). Irrespective of urethan administration, NA...

journal_title：Cancer letters

authors： De Flora S,Astengo M,Serra D,Bennicelli C

更新日期：1986-09-01 00:00:00

abstract：:We analysed the expression of BIRC5 and BIRC5-2B in primary neuroblastoma (NB) tumors and NB model systems. In tumors, overexpression of BIRC5 correlated closely with its isoform BIRC5-2B. Expression of both transcripts was stage-dependent, associated with poor prognosis and with the expression of the transcription fa...

journal_title：Cancer letters

authors： Eckerle I,Muth D,Batzler J,Henrich KO,Lutz W,Fischer M,Witt O,Schwab M,Westermann F

更新日期：2009-11-18 00:00:00

abstract：:Polo-like kinase 1 (PLK1) is required for multiple stages of mitosis and has been found to be overexpressed in many human malignancies. Previous studies by our group have revealed PLK1 overexpression as an independent prognostic factor for hepatocellular carcinoma (HCC). However, the underlying mechanisms of the tumor...

journal_title：Cancer letters

authors： He Z,Wu J,Dang H,Lin H,Zheng H,Zhong D

更新日期：2011-04-28 00:00:00

abstract：:Dibenzo[a,e]fluoranthene ( DBF ), a non- alternant carcinogenic polycyclic aromatic hydrocarbon (PAH), binds covalently to DNA. The main adducts were characterized as covalent additions of its bay-region and pseudo-bay-region diol-epoxides. The structure of these 2 adducts was analyzed by mass spectrometry using their...

journal_title：Cancer letters

authors： Perin-Roussel O,Croisy A,Ekert B,Zajdela F

更新日期：1984-04-01 00:00:00

abstract：:Spontaneous testicular teratomas which develop at a high rate in 129/Sv-Sl/+ mice are thought to be derived from germ cells. The teratomas present initially as groups of atypical germ-like cells within seminiferous cords of the 15.5 days post coitum (dpc) embryonic testes. These pluripotent teratoma stem cells are cap...

journal_title：Cancer letters

authors： Wang D,Enders GC

更新日期：1996-02-27 00:00:00

abstract：:Hamster liver S9 prepared from control animals and animals given 30% glucose in drinking water 48 h before killing was used in studies of benzo[a]pyrene (BaP) and aflatoxin (AFB1)-induced mutagenesis, metabolism of BaP and AFB1, and metabolite binding to calf thymus DNA. BAP-induced mutagenesis in Salmonella typhimuri...

journal_title：Cancer letters

authors： Rubano DC,Teel RW,Strother A

更新日期：1990-07-16 00:00:00

abstract：:Diet-induced changes in serum cholesterol levels and their relationship to mammary carcinogenesis initiated by 7,12-dimethylbenz[a]anthracene (DMBA) were studied in female Sprague-Dawley rats. DMBA was given to rats subjected to 3 dietary treatments: (1) a semipurified, cholesterol-free diet (SP); (2) the same diet wi...

journal_title：Cancer letters

authors： Klurfeld DM,Kritchevsky D

更新日期：1981-12-01 00:00:00

abstract：:Consumption of false morel (Gyromitra esculenta Fr.) has been associated not only with acute poisoning, but also with a carcinogenic risk. The hydrolysis of acetaldehyde-N-methyl-N-formylhydrazone (gyromitrin, the main toxic component of false morel) results in the formation of the methylating agents N-methyl-N-formyl...

journal_title：Cancer letters

authors： Bergman K,Hellenäs KE

更新日期：1992-01-10 00:00:00

abstract：:Free hematoporphyrin administered intravenously to healthy rabbits (1-28 mg/kg body weight) is bound by the 3 major lipoprotein components of plasma (VLDL, LDL and HDL) with different efficiency. In vitro-prepared complexes of hematoporphyrin (Hp) with lipoprotein fractions isolated from mouse serum have been injected...

journal_title：Cancer letters

authors： Barel A,Jori G,Perin A,Romandini P,Pagnan A,Biffanti S

更新日期：1986-08-01 00:00:00

abstract：:Several classes of plant polyphenols namely, flavonoids, chalcones and coumarins exhibited varying degrees of inhibition on the cell proliferation of human colon adenocarcinoma cell line 220.1. At the highest concentration tested (100 microM), many of the chalcones showed > 100% growth inhibition and their order of po...

journal_title：Cancer letters

authors： Yit CC,Das NP

更新日期：1994-07-15 00:00:00

abstract：:The hypoxic microenvironment is well-characterized in hepatocellular carcinoma (HCC). Delineation of hypoxia-responsive events is an integral part to understand the pathogenesis of HCC. We studied the functional role and clinical relevance of Stanniocalcin 1 (STC1), a hypoxia-induced molecular target, in HCC. In our c...

journal_title：Cancer letters

authors： Chan KK,Leung CO,Wong CC,Ho DW,Chok KS,Lai CL,Ng IO,Lo RC

更新日期：2017-09-10 00:00:00

abstract：:In this study, we demonstrated that thrombin activates protein kinase C (PKC), mitogen activated protein kinases (MAP kinases), transcription factor nuclear factor-kappa B (NF-kappa B), and cAMP-dependent protein kinase (PKA) in the human renal carcinoma cell line A-498. In addition, it enhanced the migratory capacity...

journal_title：Cancer letters

authors： Kaufmann R,Junker U,Junker K,Nuske K,Ranke C,Zieger M,Scheele J

更新日期：2002-06-28 00:00:00

abstract：:The genomic aberration profile of chromosome 20q in distal CIN colon carcinomas was analysed using allelotyping and CGH arrays. Allelotyping revealed carcinomas with allelic imbalance along the full long arm, and carcinomas with fully non-aberrant 20q. Oligonucleotide-based CGH showed that among the carcinomas without...

journal_title：Cancer letters

authors： Nicolet C,Guérin E,Neuville A,Kerckaert JP,Wicker N,Bergmann E,Brigand C,Kedinger M,Gaub MP,Guenot D

更新日期：2009-09-18 00:00:00

abstract：:Non-small cell lung cancer (NSCLC) remains one of the most metastasizing tumors, and directional cell migration is critical for targeting tumor metastasis. GIT2 has been known to bind to Paxillin to control cell polarization and directional migration. However, the molecular mechanisms underlying roles of GIT2 in contr...

journal_title：Cancer letters

authors： Duan B,Cui J,Sun S,Zheng J,Zhang Y,Ye B,Chen Y,Deng W,Du J,Zhu Y,Chen Y,Gu L

更新日期：2016-08-28 00:00:00

abstract：:Paclitaxel (Taxol) is currently used as the front-line chemotherapeutic drug for many types of human cancers. However, the emergence of drug resistance has been a major obstacle to the effective treatment of cancers in clinical settings. The transcription factor Forkhead box protein C2 (FOXC2) was recently demonstrate...

journal_title：Cancer letters

authors： Zhou Z,Zhang L,Xie B,Wang X,Yang X,Ding N,Zhang J,Liu Q,Tan G,Feng D,Sun LQ

更新日期：2015-07-28 00:00:00

abstract：:To understand the role of cyclooxygenase-2 (COX-2) in gastric cancer, we examined the abundance of COX-2, vascular endothelial growth factor-A (VEGF-A), and CD34 in 45 surgically resected human gastric cancers and paired normal gastric mucosa by immunohistochemical analysis. In addition, the message RNA (mRNA) express...

journal_title：Cancer letters

authors： Yu HG,Li JY,Yang YN,Luo HS,Yu JP,Meier JJ,Schrader H,Bastian A,Schmidt WE,Schmitz F

更新日期：2003-05-30 00:00:00

abstract：:We previously showed that polyphyllin D (PD) produced a stronger apoptotic effect in R-HepG2 with multi-drug resistance (MDR) than that in its parent HepG2 cells without MDR. In this study, PD was found to elicit mitochondrial fragmentation in live cells by using total internal reflection fluorescence microscopy (TIRF...

journal_title：Cancer letters

authors： Ong RC,Lei J,Lee RK,Cheung JY,Fung KP,Lin C,Ho HP,Yu B,Li M,Kong SK

更新日期：2008-03-18 00:00:00

abstract：:G protein-coupled oestrogen receptor 1 (GPER1), predicted to be a novel oestrogen receptor, has been linked to the development and progression of breast cancer. However, the molecular mechanisms underlying its functions remain elusive. Here, we show that the protein levels of GPER1 are negatively associated with those...

journal_title：Cancer letters

authors： Zhang N,Sun P,Xu Y,Li H,Liu H,Wang L,Cao Y,Zhou K,TinghuaiWang

更新日期：2021-02-01 00:00:00

abstract：:Interferons are able to enhance the expression of carcinoembryonic antigen (CEA) on tumour cells, allowing improved tumour targeting. In this report the hypothesis is tested that combinations of cytokines may further increase the tumour antigen expression. The combination of both IFN-gamma and IFN-alpha with interleuk...

journal_title：Cancer letters

authors： Verhaar MJ,Damen CA,Zonnenberg BA,Blijham GH

更新日期：1999-05-03 00:00:00

abstract：:Ascorbate anion and glutathione were found to inhibit the aqueous reaction between nitrogen dioxide (NO2) and morpholine (MOR) and thereby prevented the formation of N-nitrosomorpholine (NMOR) and N-nitromorpholine (NTMOR) at both pH 7.4 and 12.5. These antioxidants are approximately 3 orders of magnitude more reactiv...

journal_title：Cancer letters

authors： Cooney RV,Ross PD,Bartolini GL

更新日期：1986-07-01 00:00:00

abstract：:Since calpain 6 is overexpressed in uterine cervical cancer tissue compared to normal tissue, we sought to define the role of calpain 6 during tumorigenesis. We overexpressed calpain 6 or inhibited calpain 6 in human cervical cancer cells (HeLa cells) and human umbilical vein endothelial cells (HUVECs), and measured c...

journal_title：Cancer letters

authors： Rho SB,Byun HJ,Park SY,Chun T

更新日期：2008-11-28 00:00:00

abstract：INTRODUCTION:Glioma initiating cells (GICs) play important roles in tumor initiation and progression. However, interactions between tumor cells and host cells of local tumor microenvironment are kept largely unknown. Besides GICs and their progeny cells, whether adjacent normal glial cells contribute to tumorigenesis d...

journal_title：Cancer letters

authors： Chen Y,Wang Z,Dai X,Fei X,Shen Y,Zhang M,Wang A,Li X,Wang Z,Huang Q,Dong J

更新日期：2015-09-01 00:00:00

abstract：:To obtain an optimal condition for ultrasound (US)-induced apoptosis that could be useful for cancer therapy, we applied low intensity pulsed US to sonicate U937 cells in vitro. Cells were then incubated at different time intervals before measuring apoptosis. The apoptosis was assessed by DNA fragmentation and phospha...

journal_title：Cancer letters

authors： Feril LB Jr,Kondo T,Cui ZG,Tabuchi Y,Zhao QL,Ando H,Misaki T,Yoshikawa H,Umemura S

更新日期：2005-04-28 00:00:00

abstract：:Fanconi anemia (FA) is a rare genome instability syndrome characterized by progressive bone marrow failure and predisposition to cancer, especially head and neck squamous cell carcinoma. Surgical resection is the standard of care for solid tumors, as patients with FA do not tolerate genotoxic chemotherapies or radiati...

journal_title：Cancer letters

authors： Ramírez MJ,Minguillón J,Loveless S,Lake K,Carrasco E,Stjepanovic N,Balmaña J,Català A,Mehta PA,Surrallés J

更新日期：2020-03-01 00:00:00