Abstract:
:Human cancer cells maintain telomeres by telomerase activity (TA) or by alternative lengthening of telomeres (ALT). We proposed to define the prevalence of the two telomere maintenance mechanisms (TMM), to assess their association with histology, and to compare their prognostic relevance in a series of 93 patients with liposarcoma. ALT was detected by assaying ALT-associated promyelocytic leukemia nuclear bodies and TA was assayed using the telomeric repeat amplification protocol. ALT or TA was found in 25.9% or 26.6% of 139 tested liposarcoma lesions, respectively. Three lesions were ALT+/TA+ whereas approximately 50% of lesions did not show any known TMM. TMM phenotype was consistent during disease progression. ALT was prevalent in dedifferentiated and in grade 3 liposarcomas whereas TA prevailed in most round-cell myxoid and in grade 2 liposarcomas. ALT and TA incidence was similar in primary and recurrent lesions whereas metastases were more frequently TA+ than ALT+ (59% versus 18%; P = 0.04). TMM presence negatively affected patient prognosis (P = 0.001): increased mortality was associated with positivity for TA (P = 0.038) or ALT (P < 0.0001) compared with TMM absence. ALT proved to be a stronger prognostic discriminant of increased mortality than TA even when adjusted for tumor location, grade, and histology (hazard ratio for cause-specific death, 3.58 versus 1.15). Our results indicate that ALT can support fully malignant liposarcomas and is associated with unfavorable disease outcome.
journal_name
Cancer Resjournal_title
Cancer researchauthors
Costa A,Daidone MG,Daprai L,Villa R,Cantù S,Pilotti S,Mariani L,Gronchi A,Henson JD,Reddel RR,Zaffaroni Ndoi
10.1158/0008-5472.CAN-06-0273subject
Has Abstractpub_date
2006-09-01 00:00:00pages
8918-24issue
17eissn
0008-5472issn
1538-7445pii
66/17/8918journal_volume
66pub_type
杂志文章相关文献
CANCER RESEARCH文献大全abstract::Breast cancer is a heterogeneous disease with distinct molecular subtypes characterized by differential response to targeted and chemotherapeutic agents. Enhanced understanding of the genetic alterations characteristic of different subtypes is needed to pave the way for more personalized administration of therapeutic ...
journal_title:Cancer research
pub_type: 杂志文章
doi:10.1158/0008-5472.CAN-08-0234
更新日期:2008-07-01 00:00:00
abstract::We developed a new simple enzymatic assay method for measuring urinary polyamines (total amount of putrescine, spermidine, and cadaverine), using an acylpolyamine amidohydrolase and a putrescine oxidase. First conjugated polyamines (putrescine, spermidine, and cadaverine) in urine were hydrolyzed by incubation with an...
journal_title:Cancer research
pub_type: 杂志文章
doi:
更新日期:1983-05-01 00:00:00
abstract::Sustained proliferation of cancer cells requires telomerase to maintain telomeres that regulate chromosomal stability and cellular mitosis. Expression of human telomerase reverse transcriptase (hTERT) catalytic subunit, which modulates telomerase activity, is regulated at both the transcriptional level and via phospho...
journal_title:Cancer research
pub_type: 杂志文章
doi:
更新日期:2003-01-01 00:00:00
abstract::In this study, using the carcinoembryonic antigen (CEA)-expressing C15 murine colon carcinoma system in syngeneic C57BL/6 mice, we have evaluated the efficacy of bone marrow-derived dendritic cells (DCs) pulsed with the murine anti-idiotype antibody 3H1 as a tumor vaccine. Anti-idiotype 3H1 mimics a distinct and speci...
journal_title:Cancer research
pub_type: 杂志文章
doi:
更新日期:2003-06-01 00:00:00
abstract::Significant changes in aldehyde dehydrogenase (ALDH) activity occur during chemically induced rat hepatocarcinogenesis. We have developed a procedure for the histochemical localization of hepatic ALDH which has proven extremely useful as an additional probe for studying changes in this enzyme during hepatocarcinogenes...
journal_title:Cancer research
pub_type: 杂志文章
doi:
更新日期:1983-12-01 00:00:00
abstract::Chronic exposure to the hepatocellular carcinogen diethylnitrosamine (DEN) causes a dose-dependent accumulation of the promutagenic DNA adduct O4-ethyldeoxythymidine in hepatocytes and increases in the number of initiated hepatocytes as indicated by gamma-glutamyl transpeptidase positive foci. Initiation is thought to...
journal_title:Cancer research
pub_type: 杂志文章
doi:
更新日期:1989-12-15 00:00:00
abstract::Osimertinib, a mutant-specific third-generation EGFR tyrosine kinase inhibitor, is emerging as the preferred first-line therapy for EGFR-mutant lung cancer, yet resistance inevitably develops in patients. We modeled acquired resistance to osimertinib in transgenic mouse models of EGFRL858R -induced lung adenocarcinoma...
journal_title:Cancer research
pub_type: 杂志文章
doi:10.1158/0008-5472.CAN-19-3819
更新日期:2020-05-15 00:00:00
abstract::A vitamin E derivative, vitamin E succinate (VES; RRR-alpha-tocopheryl succinate), and a vitamin E analogue, 2,5,7,8-tetramethyl-2R-(4R,8R,12-trimethyltridecyl)chroman-6-yloxy acetic acid (alpha-TEA), induce human breast, prostate, colon, lung, cervical, and endometrial tumor cells in culture to undergo apoptosis but ...
journal_title:Cancer research
pub_type: 杂志文章
doi:10.1158/0008-5472.CAN-03-2327
更新日期:2004-06-15 00:00:00
abstract::The tumor localization of various anti-CD5 immunotoxins (ITs) was studied in vivo in BALB/c nude mice bearing human ascitic Ichikawa tumor cells. Plasma and ascitic clearance of IT as well as the number of intact IT molecules taken up per tumor cell was measured with a highly sensitive immunoenzymometric assay. This a...
journal_title:Cancer research
pub_type: 杂志文章
doi:
更新日期:1990-05-15 00:00:00
abstract::Liver X receptors function as central transcriptional regulators for lipid homeostasis, for which agonists have been developed as potential drugs for treatment of cardiovascular diseases and metabolic syndromes. Because dysregulation of lipid metabolism has been implicated in sex hormone-dependent cancers, we investig...
journal_title:Cancer research
pub_type: 杂志文章
doi:10.1158/0008-5472.CAN-04-2332
更新日期:2004-11-01 00:00:00
abstract::Detecting the presence and diversity of low-level mutations in human tumors undergoing genomic instability is desirable due to their potential prognostic value and their putative influence on the ability of tumors to resist drug treatment and/or metastasize. However, direct measurement of these genetic alterations in ...
journal_title:Cancer research
pub_type: 杂志文章
doi:10.1158/0008-5472.can-03-3652
更新日期:2004-04-01 00:00:00
abstract::Constitutive tyrosine kinase activity of Bcr-Abl promotes proliferation and survival of chronic myelogenous leukemia (CML) cells. Inhibition of Bcr-Abl tyrosine kinase activity or signaling proteins activated by Bcr-Abl in CML cells blocks proliferation and causes apoptotic cell death. The selective Abl kinase inhibit...
journal_title:Cancer research
pub_type: 杂志文章
doi:
更新日期:2003-01-15 00:00:00
abstract::Emerging evidence indicates that gut microbiota affect the response to anticancer therapies by modulating the host immune system. In this study, we investigated the impact of the gut microbiota on immune-mediated trastuzumab antitumor efficacy in preclinical models of HER2-positive breast cancer (BC) and in 24 patient...
journal_title:Cancer research
pub_type: 杂志文章
doi:10.1158/0008-5472.CAN-20-1659
更新日期:2021-01-22 00:00:00
abstract::Pancreatic ductal carcinoma is characterized by a profound chemoresistance. As we have shown previously, these tumor cells can develop chemoresistance by interleukin (IL)-1beta in an autocrine and nuclear factor-kappaB-dependent fashion. Because pancreatic ductal carcinoma contains many mesenchymal stromal cells, we f...
journal_title:Cancer research
pub_type: 杂志文章
doi:10.1158/0008-5472.can-03-1860
更新日期:2004-02-15 00:00:00
abstract::We have evaluated immunohistochemical characteristics of tumors and the infiltrating cells in patients treated with various immunotherapy regimens. Forty-eight patients with advanced malignancies were treated with high dose i.v. recombinant interleukin-2 alone or in combination with cyclophosphamide, recombinant tumor...
journal_title:Cancer research
pub_type: 杂志文章
doi:
更新日期:1989-12-15 00:00:00
abstract::The metabolisms of two standard electron acceptors and a series of bioreductive antitumor compounds by purified rat and human DT-diaphorases (DTD) were compared. DTD was purified from rat liver cytosol and from Escherichia coli in which rat liver or human lung tumor DTD complementary DNA was expressed. Km and kcat val...
journal_title:Cancer research
pub_type: 杂志文章
doi:
更新日期:1994-06-15 00:00:00
abstract::We compared the effect of nine N-nitroso compounds, given by gavage to adult rats, on specific radioactivity of the trichloroacetic acid-precipitable liver proteins, 1 hr after the injection of [14C]leucine. The specific radioactivity was decreased by dimethylnitrosamine, diethylnitrosamine, methyl-n-butylnitrosamine,...
journal_title:Cancer research
pub_type: 杂志文章
doi:
更新日期:1977-05-01 00:00:00
abstract::Epithelial-mesenchymal transition (EMT) is a developmental program, which is associated with breast cancer progression and metastasis. Here, we report that ectopic overexpression of SOX4 in immortalized human mammary epithelial cells is sufficient for acquisition of mesenchymal traits, enhanced cell migration, and inv...
journal_title:Cancer research
pub_type: 杂志文章
doi:10.1158/0008-5472.CAN-12-1045
更新日期:2012-09-01 00:00:00
abstract::There is increasing evidence that high doses of radiotherapy, like those delivered in stereotactic body radiotherapy (SBRT), trigger indirect mechanisms of cell death. Such effect seems to be two-fold. High doses may trigger an immune response and may cause vascular damage, leading to cell starvation and death. Develo...
journal_title:Cancer research
pub_type: 杂志文章
doi:10.1158/0008-5472.CAN-19-0181
更新日期:2019-12-01 00:00:00
abstract::Cancer in a host induces responses that increase the ability of the microenvironment to sustain the growing mass, for example, angiogenesis, but cancer cells can have varying sensitivities to these sustainability signals. Here, we show that these sensitivities are significant determinants of ultimate tumor fate, espec...
journal_title:Cancer research
pub_type: 杂志文章
doi:10.1158/0008-5472.CAN-12-4590
更新日期:2013-06-15 00:00:00
abstract::Natural killer (NK) cells safeguard against early tumor formation by destroying transformed target cells in a process referred to as NK immune surveillance. However, the immune escape mechanisms used by malignant brain tumors to subvert this innate type of immune surveillance remain unclear. Here we show that malignan...
journal_title:Cancer research
pub_type: 杂志文章
doi:10.1158/0008-5472.CAN-14-1203
更新日期:2014-09-15 00:00:00
abstract::While showing promise, vaccination strategies to treat cancer require further optimization. Likely barriers to efficacy involve cancer-associated immunosuppression and peripheral tolerance, which limit the generation of effective vaccine-specific cytotoxic T lymphocytes (CTL). Because CD4(+) T cells improve CTL respon...
journal_title:Cancer research
pub_type: 杂志文章
doi:10.1158/0008-5472.CAN-15-3130
更新日期:2016-05-15 00:00:00
abstract::The early cellular and molecular changes in the Solt-Farber model of hepatocarcinogenesis with and without initiation was studied by using histochemical, immunohistochemical, and in situ hybridization techniques. Increased cellularity was observed in the periductal space in both models 32 to 56 h after partial hepatec...
journal_title:Cancer research
pub_type: 杂志文章
doi:
更新日期:1990-06-01 00:00:00
abstract::Neuropilin-1 (NP1), in conjunction with plexins, promotes axon repulsion by binding to semaphorin 3A (SEMA3A). Although NP1 is expressed in carcinoma cells, its functions have remained elusive, and neither SEMA3A nor plexin expression has been explored in cancer. Here we provide evidence that breast carcinoma cells su...
journal_title:Cancer research
pub_type: 杂志文章
doi:
更新日期:2003-09-01 00:00:00
abstract::Fresh surgical explants of human carcinomas were implanted as first transplant generation xenografts under the kidney capsule of mice. Immunocompetent and immune-deficient mice were compared for their ability to support the persistence and growth of these xenografts. Consistent growth of tumor xenografts could not be ...
journal_title:Cancer research
pub_type: 杂志文章
doi:
更新日期:1985-10-01 00:00:00
abstract::In the multistep process of metastasis, "anchorage-independent growth," where cancer cells need to survive without cell-substratum interaction, is supposed to be important. In this study, we found that anchorage-independent growth analyzed using the soft agar colony formation assay correlated with hematogeneous intrah...
journal_title:Cancer research
pub_type: 杂志文章
doi:
更新日期:2002-05-15 00:00:00
abstract::Previously, we have shown that metastasis-associated protein 1 (MTA1) overexpression in transgenic mice was accompanied by high incidence of spontaneous B-cell lymphomas including diffuse large B-cell lymphomas (DLBCL). To understand the molecular basis of lymphoma in MTA1-transgenic (MTA1-TG) mice, we wished to ident...
journal_title:Cancer research
pub_type: 杂志文章
doi:10.1158/0008-5472.CAN-07-0750
更新日期:2007-08-01 00:00:00
abstract::50C10 and 52H10 are two DNA clones previously reported by us to be overexpressed in human colonic mucosa at high risk for development of colonic tumors. This report presents sequencing data that reveal that these clones contain repetitive Alu elements. Each Alu sequence is associated with a 3'-oligoadenylate [oligo(A)...
journal_title:Cancer research
pub_type: 杂志文章
doi:
更新日期:1995-01-01 00:00:00
abstract::A unique electrophoretic form of lactate dehydrogenase (LDH-Z), formerly observed in a choriocarcinoma cell line (JEG-3) and first-trimester placenta, has been shown to be the same as that produced in hydatidiform mole and term placenta. We have also observed LDH-Z in second-trimester placenta, choriocarcinoma metasta...
journal_title:Cancer research
pub_type: 杂志文章
doi:
更新日期:1980-02-01 00:00:00
abstract::Given the prevalence of Ras mutations in human cancer, it is critical to understand the effector pathways downstream of oncogenic Ras leading to transformation. To directly assess the requirement for Rac1 in K-ras-induced tumorigenesis, we employed a model of lung cancer in which an oncogenic allele of K-ras could be ...
journal_title:Cancer research
pub_type: 杂志文章
doi:10.1158/0008-5472.CAN-07-2300
更新日期:2007-09-01 00:00:00