Oncogenic PITX2 facilitates tumor cell drug resistance by inverse regulation of hOCT3/SLC22A3 and ABC drug transporters in colon and kidney cancers.

abstract：:Inhibition of DNA synthesis was observed and quantitated in hamster buccal pouch epithelium exposed in vivo and in vitro to indirect acting carcinogens. Topical application of a 0.5% solution of the potent hamster buccal pouch carcinogen 7,12-dimethylbenz[a]-anthracene (DMBA) acutely inhibited epithelial DNA synthesis...

journal_title：Cancer letters

authors： Nagabhushan M,Ng YK,Elias R,Polverini PJ,Solt DB

更新日期：1990-09-01 00:00:00

abstract：:The uptake of several metallophthalocyanine tetrasulfonates by cultured Chinese hamster cells was studied. Uranyl- and chloraluminium were taken up at the highest rate followed by Ni-, Zn-, Cu-, Co- and dichlorosilicon-phthalocyanine tetrasulfonate. The uptake from the growth medium containing 10% serum in which only ...

journal_title：Cancer letters

authors： Ben-Hur E,Siwecki JA,Newman HC,Crane SW,Rosenthal I

更新日期：1987-12-01 00:00:00

abstract：:Tumor promoters such as phorbol esters, teleocidin and okadaic acid increase the numbers of multilayered, transformed foci produced by BPV DNA-transfected C3H/10T1/2 cells. We questioned whether arsenic and chromium, which are known human carcinogens also enhance transformation of BPV DNA-transfected C3H/10T1/2 cells....

journal_title：Cancer letters

authors： Kowalski LA,Tsang SS,Davison AJ

更新日期：1996-05-15 00:00:00

abstract：:Mangiferin, 1,3,6,7-tetrahydroxyxanthone-C2-beta-D-glucoside, is one of xanthone derivatives and C-glucosylxanthones, is widely distributed in higher plants and is one of constituents of folk medicines. Recent studies showed that mangiferin has a potential as an anti-oxidant and an anti-viral agent. In this study, we ...

journal_title：Cancer letters

authors： Yoshimi N,Matsunaga K,Katayama M,Yamada Y,Kuno T,Qiao Z,Hara A,Yamahara J,Mori H

更新日期：2001-02-26 00:00:00

abstract：:Solid tumors are composed of tumor cells and stromal cells including lymphatic endothelial cells (LEC), which are mainly viewed as cells forming lymphatic vessels involved in the transport of metastatic and immune cells. We here reveal a new mechanism by which tumor exposed-LEC (teLEC) exert mitogenic effects on tumor...

journal_title：Cancer letters

authors： Van de Velde M,Ebroin M,Durré T,Joiret M,Gillot L,Blacher S,Geris L,Kridelka F,Noel A

更新日期：2021-01-28 00:00:00

abstract：:In order to determine the effects of intermittent hormonal manipulation on the promotion stage of rat prostate carcinogenesis, testosterone and/or estrogen were administered to F344 rats for 40 weeks after 20-weeks treatment with the prostate carcinogen, 3,2'-dimethyl-4-aminobiphenyl. For this purpose testosterone pro...

journal_title：Cancer letters

authors： Cui L,Mori T,Takahashi S,Imaida K,Akagi K,Yada H,Yaono M,Shirai T

更新日期：1998-01-09 00:00:00

abstract：:Development of antiandrogen-resistance in advanced prostate cancer involves multiple androgen receptor (AR)-dependent and -independent pathways. Here, we demonstrated that endothelial nitric oxide synthase (eNOS) exhibited an overexpression pattern in hormone-refractory prostate cancer and several models of advanced h...

journal_title：Cancer letters

authors： Yu S,Jia L,Zhang Y,Wu D,Xu Z,Ng CF,To KK,Huang Y,Chan FL

更新日期：2013-01-01 00:00:00

abstract：:We present here a new cell line, NOR-P1, established from a metastatic subcutaneous tumor of a patient with pancreatic cancer. The cells show rapid growth in culture with a doubling time of 16 h and high migration activity. Genetic and molecular analyses revealed high telomerase activity and a mutation in the K-ras on...

journal_title：Cancer letters

authors： Sato N,Mizumoto K,Beppu K,Maehara N,Kusumoto M,Nabae T,Morisaki T,Katano M,Tanaka M

更新日期：2000-07-31 00:00:00

abstract：:Nitric oxide (NO) and associated reactive nitrogen species (RNS) are involved in many physiological functions. There has been an ongoing debate to whether RNS can inhibit or perpetuate chronic inflammation and associated carcinogenesis. Although the final outcome depends on the genetic make-up of its target, the surro...

journal_title：Cancer letters

authors： Hofseth LJ

更新日期：2008-09-08 00:00:00

abstract：:We studied the effect of staurosporine (SSP), a broad-spectrum protein kinase inhibitor, on the levels of protein kinase C (PKC) activity and proliferation in two murine neuroblastoma cell lines, Neuro2a and its clone NB41A3. The PKC activity was examined in whole cell lysate, cytosolic and particulate fractions. A di...

journal_title：Cancer letters

authors： Mohan DR,Nagarathna R,Krishna M,Jagtap JC,Shastry P

更新日期：1999-05-24 00:00:00

abstract：:The analogs of benzidine were assay for mutagenicity using Salmonella typhimurium TA-98 and TA-100 and a mouse liver enzyme preparation. Only 4-aminobiphenyl produced both frameshift and base pair substitution mutations and 3,3'-dichlorobenzidine was the only compound which was mutagenic without the mammalian enzyme f...

journal_title：Cancer letters

authors： Lazear EJ,Louie SC

更新日期：1978-01-01 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：:Innate resistance to various therapeutic interventions is a hallmark of cancer. In recent years, however, acquired resistance has emerged as a daunting challenge to anticancer treatments including chemotherapy, radiation and targeted therapy, which abolishes the efficacy of otherwise successful regimens. Cancer cells ...

journal_title：Cancer letters

authors： Sun Y

更新日期：2016-09-28 00:00:00

abstract：:Thyroid hormone receptor interactor 4 (TRIP4), a subunit of the tetrameric nuclear activating signal co-integrator 1 (ASC-1) complex, exerts pro-tumorigenic effects. The role for TRIP4 in the regulation of cervical cancer growth and radiation resistance is presently unknown. In this study, TRIP4 was found to be highly...

journal_title：Cancer letters

authors： Che Y,Li Y,Zheng F,Zou K,Li Z,Chen M,Hu S,Tian C,Yu W,Guo W,Luo M,Deng W,Zou L

更新日期：2019-06-28 00:00:00

abstract：:We evaluated the ability of brain-derived neurotrophic factor (BDNF) to decrease the chemosensitivity of neuroblastoma cells to cisplatin. Two cell lines, one derived from SH-SY5Y (SY5Y-TB8) and the other from SK-N-AS (AS-TB8), transfected with a TrkB plasmid were generated, and used to assess the effects of activatio...

journal_title：Cancer letters

authors： Jaboin J,Hong A,Kim CJ,Thiele CJ

更新日期：2003-04-10 00:00:00

abstract：:The present study was conducted to investigate protein levels of inducible NO synthase (iNOS) and cayclooxygenase-2 (COX-2) in human colon cancer tissues. Significant increase of iNOS and COX-2 levels in tumors as compared to paired normal tissue was observed in 15 and 28, respectively, of 29 cases investigated. No co...

journal_title：Cancer letters

authors： Ohta T,Takahashi M,Ochiai A

更新日期：2006-08-08 00:00:00

abstract：:Currently, chemoresistance is an important cause of treatment failure in colorectal cancer. Cancer stem cells, which are a population of multi-potent cells with the capacity to self-renew and differentiate, have been found to participate in chemoresistance. In the present study, the chemotherapeutic drug oxaliplatin i...

journal_title：Cancer letters

authors： Yang HZ,Ma Y,Zhou Y,Xu LM,Chen XJ,Ding WB,Zou HB

更新日期：2015-05-28 00:00:00

abstract：:Although mesenchymal stem cells (MSCs) have been reported to inhibit tumor growth, the mechanism controlling this tumor suppression function is unclear. Here, we report that high-density (40,000 cells/cm2) cultured adipose tissue-derived MSCs (40K-ASCs) expressed interferon (IFN)-β and tumor necrosis factor-related ap...

journal_title：Cancer letters

authors： Jung PY,Ryu H,Rhee KJ,Hwang S,Lee CG,Gwon SY,Kim J,Kim J,Yoo BS,Baik SK,Bae KS,Eom YW

更新日期：2019-01-01 00:00:00

abstract：:The capacity of the human adrenal gland to metabolize various xenobiotics was investigated. Adrenal microsomal and mitochondrial preparations showed a maximal absorption at 450 nm for dithionite-reduced cytochromes in the presence of carbon monoxide. Occasionally, absorption maxima at 448 nm were observed with both mi...

journal_title：Cancer letters

authors： Papadopoulos D,Seidegard J,Rydström J

更新日期：1984-02-01 00:00:00

abstract：:The mdm2 oncogene is amplified and overexpressed in a variety of human tumours and the oncogenic potential of MDM2 is partly due to its ability to inactivate tumour suppressor p53 function. In the present communication we describe the cloning, sequence analysis and expression of the complete wildtype canine and equine...

journal_title：Cancer letters

authors： Nasir L,Burr PD,McFarlane ST,Gault E,Thompson H,Argyle DJ

更新日期：2000-04-28 00:00:00

abstract：:This review centers on recent findings with respect to modulating cancer multidrug resistance (MDR) with the well-known antidepressant fluoxetine (prozac). The MDR phenomena and mechanisms are discussed, including the roles of ABC transporters as MDR-pumps and the potential involvement of cancer stem cells. The three ...

journal_title：Cancer letters

authors： Peer D,Margalit R

更新日期：2006-06-18 00:00:00

abstract：:Chlorophyllin (CHL), a water-soluble derivative of chlorophyll, has been used for the treatment of several abnormal human conditions without apparent toxicity. Recent studies have revealed that CHL has the excellent chemopreventive potential. In the present investigation, we have found the inhibitory activities of CHL...

journal_title：Cancer letters

authors： Chung WY,Lee JM,Park MY,Yook JI,Kim J,Chung AS,Surh YJ,Park KK

更新日期：1999-10-18 00:00:00

abstract：:Celecoxib has a potential role for oral cancer chemoprevention but its systemic side effects are a concern. Topical chemoprevention is a promising way to reduce the toxicity. This study was designed to determine whether topical application of polymer delivered celecoxib would have an inhibitory effect on human oral ca...

journal_title：Cancer letters

authors： Wang Z,Polavaram R,Shapshay SM

更新日期：2003-07-30 00:00:00

abstract：:Pancreatic cancer remains a highly lethal malignancy. We have recently shown that simultaneous expression of Kras and mutant Tp53R175H promotes invasive ductal adenocarcinoma from pancreatic ductal cells. We hypothesized specific mutations in TP53 have divergent mechanisms of transforming ductal cells. In order to und...

journal_title：Cancer letters

authors： Polireddy K,Singh K,Pruski M,Jones NC,Manisundaram NV,Ponnela P,Ouellette M,Van Buren G,Younes M,Bynon JS,Dar WA,Bailey JM

更新日期：2019-07-01 00:00:00

abstract：:A single administration of enantiomerically pure 11,12-dihydrodiols of dibenzo[a,l]pyrene (DB[a,l]P) on the back of NMRI mice and subsequent chronic treatment with 12-O-tetradecanoylphorbol 13-acetate (TPA) (initiation/promotion assay) revealed strikingly different carcinogenic activities of both enantiomers. Tumor-in...

journal_title：Cancer letters

authors： Luch A,Friesel H,Seidel A,Platt KL

更新日期：1999-03-01 00:00:00

abstract：:We have investigated the structure of the carbohydrate moiety of the precursors of the cathepsin B-like proteinase (PCBt). The largest precursor has an apparent molecular size (Mr) of 45-47 Kd and it contains 3 N-linked oligosaccharide chains which were Endo beta N acetylglucosaminidase H (Endo H)-resistant forms. On ...

journal_title：Cancer letters

authors： Pagano M,Dalet-Fumeron V,Engler R

更新日期：1989-04-01 00:00:00

abstract：:A hitherto unreported lactate dehydrogenase (LD) isoenzyme, which migrates electrophoretically to the relative position between LD2 and LD3 has been identified in the electropheratogram in 7 of 7 (100%) cultured hepatoma cell lines with various degrees of differentiation and is thus given the name LD2-3. LD2-3 seems t...

journal_title：Cancer letters

authors： Liu TZ,Chen PY,Chiu DT,Wei JS,Chang KS,Lin KH

更新日期：1994-12-09 00:00:00

abstract：:Carcinogenicity of quercetin and rutin were examined in inbred ACI strain rats. Rats were given a diet containing 1% or 5% quercetin or 5% rutin for 540 days, or 10% quercetin and 10% rutin for 850 days. Rats in control groups were fed a normal basal diet. Most tumors found in experimental groups were also found in th...

journal_title：Cancer letters

authors： Hirono I,Ueno I,Hosaka S,Takanashi H,Matsushima T,Sugimura T,Natori S

更新日期：1981-06-01 00:00:00

abstract：:Efficient DNA repair mechanisms comprise a critical component in the protection against human cancer, as indicated by the high predisposition to cancer of individuals with germ-line mutations in DNA repair genes. This includes biallelic germ-line mutations in the MUTYH gene, encoding a DNA glycosylase that is involved...

journal_title：Cancer letters

authors： Paz-Elizur T,Sevilya Z,Leitner-Dagan Y,Elinger D,Roisman LC,Livneh Z

更新日期：2008-07-18 00:00:00

abstract：:As a promising method for local tumor treatment, nanosecond pulsed electric field (nsPEF) ablation elicits a potent anti-tumor immune response. However, the mechanism of the nsPEF-mediated anti-tumor immune response and its effects on the tumor microenvironment remains unclear. Here, we demonstrated that nsPEF treatme...

journal_title：Cancer letters

authors： Qian J,Chen T,Wu Q,Zhou L,Zhou W,Wu L,Wang S,Lu J,Wang W,Li D,Xie H,Su R,Guo D,Liu Z,He N,Yin S,Zheng S

更新日期：2020-12-28 00:00:00