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Neoplasma

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https://read.qxmd.com/read/30569725/interplay-of-transcription-factors-stat3-stat1-and-ap-1-mediates-activity-of-the-matrix-metallo-proteinase-1-promoter-in-colorectal-carcinoma-cells
#1
A Muller, J Gasch, K F Albring, F Aberger, H Nivarthi, M Khemeri, R Moriggl, K H Friedrich
Signal Transducers (STATs) 1 and 3 and Activator Protein 1 (AP-1) are transcription factors involved in the development of malignancy in colorectal carcinoma (CRC). Matrix Metalloproteinase 1 (MMP-1) is a protease frequently dysregulated in de-differentiated and invasive cancer cells. Its expression is influenced by STAT and AP-1 transcription factors. We studied their contributions to transcriptional regulation of MMP-1 in colorectal carcinoma (CRC) cells. Both STAT3 and AP-1 contribute individual expression-inducing and additive effects and interact with the MMP-1 promoter...
December 12, 2018: Neoplasma
https://read.qxmd.com/read/30569724/two-czech-patients-with-familial-adenomatous-polyposis-presenting-mosaicism-in-apc-gene
#2
M Urbanova, K Hirschfeldova, L Obeidova, B Janosikova, J Lastuvkova, M Lukas, J Kotlas, J Stekrova
During standard molecular diagnostic procedure, two Czech families with APC (Adenomatous polyposis coli gene) mosaicism have been detected. A woman with attenuated familial adenomatous polyposis (AFAP, OMIM #175100) was recently inspected by next generation sequencing. Standard bioinformatics pipeline, restricted to variants with at least 20% of reads (for germline variants) would miss mutation p.G1412X (NM_000038.5), present in 17% of reads. This novel variant was not present in any of her two children. Another woman with a clinical manifestation of attenuated FAP was tested 16 years ago without conclusive APC mutation found when denaturing gradient gel electrophoresis (DGGE), protein truncation test (PTT), multiplex ligation probe amplification (MLPA) and direct Sanger sequencing, were applied...
December 12, 2018: Neoplasma
https://read.qxmd.com/read/30569723/pituitary-tumor-transforming-gene-binding-factor-pbf-is-required-for-androgen-induced-prostate-cancer-proliferation-and-invasion
#3
S Q Huang, B Wang, Q J Liao, C X Shen, W B Li
Pituitary tumor transforming gene binding factor (PBF) is a proto-oncogene that plays a role in many cancers; however, its involvement in prostate cancer (PCa) remains unclear. Here, we examined PBF expression in clinical specimens and investigated its regulation and function in human PCa cell lines. Immunohistochemical staining of patient tissues revealed higher PBF expression in PCa than in benign prostatic hyperplasia or adjacent normal prostate specimens. In LNCaP and 22Rv1 cells, PBF expression was upregulated by androgen treatment in a manner partially blocked by the androgen receptor (AR) antagonist bicalutamide...
December 12, 2018: Neoplasma
https://read.qxmd.com/read/30569722/fusion-protein-ttf-eg3287-induces-occlusion-of-tumor-vessels-and-impairs-tumor-growth-in-human-colon-caner
#4
G Q Qiu, X Xie, B Zhao, L Z Xu, Y Q Chen
The problems including narrow indications, low drug loading, and difficulty in intervention, severely affect the clinical efficacy of anti-tumor embolization. Here, we designed a novel tTF-EG3287 protein consisting of the truncated tissue factor (tTF) fused with the bicyclic polypeptide which was encoded by exons 7 and 8 for accurately localizing to the tumor vascular endothelial cells (EG3287). This study was aimed to explore its anti-cancer effect. Gene sequencing was used to verify the fusion gene. SDS-PAGE gel was used to confirm the optimal induction time and concentration of tTF-EG3287...
December 12, 2018: Neoplasma
https://read.qxmd.com/read/30569721/development-of-a-five-gene-signature-as-a-novel-prognostic-marker-in-ovarian-cancer
#5
R Wang, X H Ye, X L Zhao, J L Liu, C Y Zhang
The prognosis of ovarian cancer (OC) remains poor. Thus, the present study aims to identify independently prognostic factor in patients with OC. OC gene expression study GSE26712 and TCGA-OV were included in the study. Prognosis associated differentially expressed genes (DEGs) between normal ovarian tissue and OC were identified. LASSO Cox proportional hazards regression model was conducted and a prognostic signature was constructed based on these DEGs. The predictive ability of the signature was analyzed in the training set and test set...
December 12, 2018: Neoplasma
https://read.qxmd.com/read/30569720/expression-profile-of-long-noncoding-rnas-in-human-papillary-thyroid-carcinoma
#6
Y Cao, C Shi, J Li, Y Liang, J Qiu, L Yuan, Z Yong, D X Zhang, G Q Shi
Long noncoding RNAs (lncRNAs) are strongly associated with cancer biology. The objective of this study was to investigate the expression profile of lncRNAs in human papillary thyroid carcinoma (PTC), and to understand the biological role of lncRNAs and their involvement in the oncogenesis of PTC. The lncRNAs and messenger RNAs (mRNAs) expression in human PTC and paired adjacent noncancerous thyroid (NCT) tissues were studied using microarray. Quantitative real-time polymerase chain reaction (qRT-PCR) was used to validate five differentially expressed lncRNAs...
December 12, 2018: Neoplasma
https://read.qxmd.com/read/30569719/local-delivery-of-temozolomide-via-a-biologically-inert-carrier-temodex-prolongs-survival-of-glioma-patients-irrespectively-of-the-mgmt-methylation-status
#7
I Karlsson, D Veevnik, A Fedulov, N Yurkshtovich, T Yurkshtovich, G Pejler, I Lokot
Glioma is the most common brain malignancy. Standard first-line therapy for glioma includes surgery, radiotherapy and systemic administration of temozolomide. However, temozolomide does not reach the brain in sufficient doses when administered orally and has poor efficiency in more than half of the patients. Strategies to improve the treatment of glial malignancies are therefore needed. We have recently developed a system (Temodex) for local administration of temozolomide by encapsulating the drug in a biologically inert matrix...
December 12, 2018: Neoplasma
https://read.qxmd.com/read/30569718/impact-of-pelvic-bone-marrow-irradiation-on-the-hematological-toxicity-of-subsequent-chemotherapy-in-rectal-cancer
#8
M Spalek, W Michalski, L Wyrwicz
Preoperative radio(chemo)therapy in rectal cancer may irreversibly damage pelvic bone marrow (PBM) and impair the tolerance of subsequent chemotherapy. The aim of the study was to assess the relationship between the irradiated volume of PBM and the toxicity of subsequent 5-fluorouracil, oxaliplatin, leucovorin (FOLFOX-4) in rectal cancer. We included consecutive rectal cancer patients who received FOLFOX-4 postoperatively or due to cancer relapse. The PBM was divided into iliac (IM), lumbosacral (LSM), and lower pelvic (LPM) marrow...
December 12, 2018: Neoplasma
https://read.qxmd.com/read/30509110/case-series-on-multiple-prostate-re-irradiation-for-locally-recurrent-prostate-cancer-something-ventured-something-gained
#9
S Volpe, B Alicja Jereczek-Fossa, D Zerini, D Patricia Rojas, C Fodor, A Vavassori, P Romanelli, S Vigorito, E Rondi, S Comi, R Cambria, F Cattani, S Dicuonzo, P De Marco, G Beltramo, G Musi, O De Cobelli, G Marvaso, R Orecchia
The aim is to present the technical feasibility and efficacy of multiple re-irradiation (re-EBRT) for local recurrence of prostate cancer (PCa) using retrospective analysis of an updated series of patients who received ablative re-EBRT with stereotactic image-guided technique for isolated local recurrence of PCa. Eight patients received three RT courses (2 re-RTs); of those 2 received 4 RT courses (3 re-RTs). Local relapse in the prostate was assessed by multiparametric magnetic resonance and/ or choline positron emission tomography...
November 25, 2018: Neoplasma
https://read.qxmd.com/read/30509112/ablative-dose-stereotactic-body-radiation-therapy-for-oligometastatic-disease-a-prospective-single-institution-study
#10
P Burkon, T Kazda, P Pospisil, M Slavik, L Kominek, I Selingerova, D M Blakaj, T Prochazka, M Vrzal, Z Rehak, P Slampa
Localized, metastasis-directed stereotactic body radiation therapy (SBRT) of oligometastatic disease (OD) is currently rapidly evolving standard of care in many institutions. Further reports of outcomes are needed to strengthen the level of evidence in the absence of comparative trials evaluating different practical procedures. The aim of this prospective single institutional study is to analyse, in unselected cohort of patients from real-world clinical practice, the long-term survival, tumor control outcomes and safety of SBRT (radical ablative radiotherapy with biological equivalent dose BED10 > 100 Gy) for OD...
November 23, 2018: Neoplasma
https://read.qxmd.com/read/30509107/survival-prediction-with-score-model-based-on-clinical-characteristics-in-advanced-hcc-patients-receiving-oxaliplatin-containing-regimens
#11
L Qian, Y B Dong, L L Zhao, H J Zhao, J W Cui, N Wang
A score model based on clinical characteristics in advanced hepatocellular carcinoma (HCC) patients treated with a systemic chemotherapy of oxaliplatin-containing regimens was established to evaluate progression-free survival (PFS) and overall survival (OS). Thirty HCC patients who were eligible for radical resection were involved in the retrospective study, and were divided into good response group (complete response (CR) / partial response (PR) group) and poor response group (stable disease (SD) / progression disease (PD) group)...
November 23, 2018: Neoplasma
https://read.qxmd.com/read/30509097/circulating-tumor-cells-in-lung-carcinogenesis-minireview
#12
H Skovierova, E Vidomanova, M Skoviera, B Tothova, E Halasova, J Strnadel
Metastasis development causes death in over 90% of cancer patients, and understanding the underlying biological features has long been hindered by difficulties in studying the widespread cancerous lesions and the absence of reliable methods of isolating and detecting viable metastatic cells during disease progression. These problems have an adverse impact on developing new agents capable of blocking cancer spread. Circulating tumor cells (CTCs) have a crucial role in carcinogenesis, and this review presents advanced understanding of the characteristics of CTCs and CTC cluster metastatic properties...
January 15, 2019: Neoplasma
https://read.qxmd.com/read/30334455/trichostatin-a-inhibits-proliferation-of-triple-negative-breast-cancer-cells-by-inducing-cell-cycle-arrest-and-apoptosis
#13
X Song, J Q Wu, X F Yu, X S Yang, Y Yang
Triple negative breast cancer (TNBC) is the most aggressive subtype of breast cancer with poor outcome. Because of lacking therapeutic targets, chemotherapy is the main treatment option for patients with TNBC. Overexpression of HDACs correlates with tumorigenesis, highlighting the potential of HDACs as therapeutic targets for TNBC. Here we demonstrate that trichostatin A (TSA, a HDAC inhibitor) selectively inhibits the proliferation of TNBC cell lines HCC1806 and HCC38 rather than a normal breast cell line MCF10A...
November 15, 2018: Neoplasma
https://read.qxmd.com/read/30334454/role-of-epigenetic-deregulation-in-hematogenous-dissemination-of-malignant-uveal-melanoma
#14
B Smolkova, V Horvathova Kajabova, I Zmetakova, L Kalinkova, G Czanner, A Markova, A Furdova
It has become increasingly clear that epigenetic deregulation plays a fundamental role in cancer. Although the understanding of molecular, genetic and transcriptional alterations involved in the initiation and progression of uveal melanoma (UM) has grown significantly in recent years, little attention has been paid to the role of epigenetic changes. In cancer, epithelial-to-mesenchymal transition (EMT) enables trans-differentiation of epithelial tumor cells, endowing them with migratory and invasive properties...
November 15, 2018: Neoplasma
https://read.qxmd.com/read/30334453/comparison-of-hla-g-and-mmp-transcription-in-human-tumor-cell-lines
#15
K Polakova, E Bandzuchova
HLA-G antigens and matrix metalloproteinases (MMPs) expressed in various tumors are involved in tumor growth and metastasis. In this study, we investigated if correlation between HLA-G and MMP expression exists in different cell lines. We examined MMP transcription in two choriocarcinoma cell lines: JEG-3 (HLA-G positive) and JAR (HLA-G negative). We discovered that both cell lines express a similar panel of MMPs; except for MMP12. Transcript MMP12 was exclusively detected in HLA-G expressing JEG-3 cells but not in HLA-G deficient JAR cells...
November 15, 2018: Neoplasma
https://read.qxmd.com/read/30334452/slc27a2-regulates-mir-411-to-affect-chemo-resistance-in-ovarian-cancer
#16
F D Chen, H H Chen, S C Ke, L R Zheng, X Y Zheng
Although platinum-based chemotherapies have long been used as standard treatment in ovarian cancer, cisplatin resistance is a major problem that restricts its use. Herein, we investigate the biological function of SLC27A2 and its underlying mechanisms in regulating chemo-resistance in ovarian cancer. The findings show that SLC27A2 down-regulation in primary ovarian cancer tissues correlates with chemo-resistance and poor patient survival in our patient cohort. Significantly, we demonstrate that up-regulation of SLC27A2 by lentivirus-mediated p-SLC27A2 sensitizes ovarian cancer cells to cisplatin in vitro and in vivo via apoptosis...
November 15, 2018: Neoplasma
https://read.qxmd.com/read/30334451/mir-451a-induced-apoptosis-of-philadelphia-chromosome-positive-acute-lymphoblastic-leukemia-cells-by-targeting-il-6r
#17
T Jiang, J Chen, X B Huang, Y X Li, L Zhong
Philadelphia chromosome positive (Ph+) acute lymphoblastic leukemia (ALL) is the most fatal leukemia due to the BCR/ABL fusion protein. This fusion protein can induce interleukin 6 (IL-6) expression in leukemia stem cells (LSCs) which sustain stemness by binding IL-6R and activating the Janus kinase (JAK)/signal transducer and activator of the transcription (STAT) pathway. IL-6R was one of the targets of miR-451a down-regulated in LSCs by BCR/ABL. We investigated the relationship between miR-451a, IL-6R, and BCR/ABL in Ph+ ALL and created a strategy to treat this disease...
November 15, 2018: Neoplasma
https://read.qxmd.com/read/30334450/pcr-based-detection-of-egfr-alk-kras-and-braf-mutations-in-russian-patients-with-lung-adenocarcinoma-a-single-center-experience
#18
N V Mitiushkina, M M Kholmatov, A R Venina, V I Tiurin, G A Yanus, T N Sokolova, O S Yatsuk, O A Zaitseva, A O Ivantsov, E Sh Kuligina, A V Togo, E N Imyanitov
In contrast to other countries with predominantly white populations, Russian smoking-related lung cancers (LC) are mainly squamous cell carcinomas and approximately half lung adenocarcinomas (AdCa) are not related to tobacco consumption. Given that smoking significantly influences the probability of presence of actionable mutations in LC, one would expect that Russian lung AdCa patients would differ from other white populations in distribution of EGFR, ALK, KRAS and BRAF mutations. Herein, 2,336 consecutive lung AdCa cases, including 1,203 patients with known smoking status, were subjected to sequential testing for the above mutations...
November 15, 2018: Neoplasma
https://read.qxmd.com/read/30334449/long-non-coding-rna-crnde-may-be-associated-with-poor-prognosis-by-promoting-proliferation-and-inhibiting-apoptosis-of-cervical-cancer-cells-through-targeting-pi3k-akt
#19
H Y Yang, C P Huang, M M Cao, Y F Wang, Y Liu
Long non-coding RNAs (lncRNAs) are attracting more and more attention from researchers because they are relatively new factors in regulating biological processes in human cancers. The Colorectal Neoplasia Differentially Expressed (CRNDE) lncRNA is transcribed from chromosome 16 on the opposite strand to the neighboring IRX5 gene. It was originally discovered abnormally expressed in colorectal cancer (CRC) and was certified a critical biomarker in many cancers. However, its biological function and mechanism underlying the tumorigenesis of cervical cancer still require exploration...
November 15, 2018: Neoplasma
https://read.qxmd.com/read/30334448/adam-protein-family-its-role-in-tumorigenesis-mechanisms-of-chemoresistance-and-potential-as-diagnostic-and-prognostic-factors
#20
L Zadka, M Jerzy Kulus, K Piatek
ADAMs are a family of transmembrane proteins described for the first time in the 1990's. ADAMs is an abbreviation of "A Disintegrin and Metallo-proteinases". Their earliest known role was involvement in gamete fusion, and their adhesion properties in intercellular interactions also suggested involvement in tumor biology. Further research emphasized the importance of ADAM proteins in the regulation of neoplastic processes due to their influence on adhesion, cell migration, proteolysis and cell signaling...
November 15, 2018: Neoplasma
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