keyword
MENU ▼
Read by QxMD icon Read
search

Patient derived xenograft PDX

keyword
https://www.readbyqxmd.com/read/28924803/patient-derived-xenografts-as-preclinical-neuroblastoma-models
#1
REVIEW
Noémie Braekeveldt, Daniel Bexell
The prognosis for children with high-risk neuroblastoma is often poor and survivors can suffer from severe side effects. Predictive preclinical models and novel therapeutic strategies for high-risk disease are therefore a clinical imperative. However, conventional cancer cell line-derived xenografts can deviate substantially from patient tumors in terms of their molecular and phenotypic features. Patient-derived xenografts (PDXs) recapitulate many biologically and clinically relevant features of human cancers...
September 19, 2017: Cell and Tissue Research
https://www.readbyqxmd.com/read/28923776/prostate-cancer-xenografts-and-hormone-induced-prostate-carcinogenesis
#2
REVIEW
Dalton T McLean, Douglas W Strand, William A Ricke
Despite the advancement of transgenic and gene knockout animal models in the prostate cancer research, there is still a need for utilizing xenograft models. Xenografts can be grown in multiple sites/organs within immunocompromised animals such as mice and rats. Although prostate xenografts have been derived from many species, human cells and tissues are the most commonly used due to their potential clinical significance. Xenograft models that progress from one state or stage to another are commonly used to address important scientific questions including malignant transformation, metastatic spread, and castration resistance...
September 8, 2017: Differentiation; Research in Biological Diversity
https://www.readbyqxmd.com/read/28920960/long-noncoding-rna-egfr-as1-mediates-epidermal-growth-factor-receptor-addiction-and-modulates-treatment-response-in-squamous-cell-carcinoma
#3
Daniel S W Tan, Fui Teen Chong, Hui Sun Leong, Shen Yon Toh, Dawn P Lau, Xue Lin Kwang, Xiaoqian Zhang, Gopinath M Sundaram, Gek San Tan, Mei Mei Chang, Boon Tin Chua, Wan Teck Lim, Eng Huat Tan, Mei Kim Ang, Tony K H Lim, Prabha Sampath, Balram Chowbay, Anders J Skanderup, Ramanuj DasGupta, N Gopalakrishna Iyer
Targeting EGFR is a validated approach in the treatment of squamous-cell cancers (SCCs), although there are no established biomarkers for predicting response. We have identified a synonymous mutation in EGFR, c.2361G>A (encoding p.Gln787Gln), in two patients with head and neck SCC (HNSCC) who were exceptional responders to gefitinib, and we showed in patient-derived cultures that the A/A genotype was associated with greater sensitivity to tyrosine kinase inhibitors (TKIs) as compared to the G/A and G/G genotypes...
September 18, 2017: Nature Medicine
https://www.readbyqxmd.com/read/28916653/yap-suppresses-lung-squamous-cell-carcinoma-progression-via-deregulation-of-the-dnp63-gpx2-axis-and-ros-accumulation
#4
Hsinyi Huang, Wenjing Zhang, Yafang Pan, Yijun Gao, Lei Deng, Fuming Li, Fei Li, Xueyan Ma, Shenda Hou, Jing Xu, Peixue Li, Xiaoxun Li, Guohong Hu, Cheng Li, Haiquan Chen, Lei Zhang, Hongbin Ji
Lung squamous cell carcinoma (SCC), accounting for approximately 30% of non-small cell lung cancer, is often refractory to therapy. Screening a small molecule library, we identified digitoxin as a high potency compound for suppressing human lung SCC growth in vitro and in vivo. Mechanistic investigations revealed that digitoxin attenuated YAP phosphorylation and promoted YAP nuclear sequestration. YAP activation led to excessive accumulation of reactive oxygen species (ROS) by downregulating the antioxidant enzyme GPX2 in a manner related to p63 blockade...
September 15, 2017: Cancer Research
https://www.readbyqxmd.com/read/28915623/inhibition-of-the-pi3k-akt-mtor-pathway-activates-autophagy-and-compensatory-ras-raf-mek-erk-signalling-in-prostate-cancer
#5
Dominika E Butler, Christopher Marlein, Hannah F Walker, Fiona M Frame, Vincent M Mann, Matthew S Simms, Barry R Davies, Anne T Collins, Norman J Maitland
The PI3K/AKT/mTOR pathway is frequently activated in advanced prostate cancer, due to loss of the tumour suppressor PTEN, and is an important axis for drug development. We have assessed the molecular and functional consequences of pathway blockade by inhibiting AKT and mTOR kinases either in combination or as individual drug treatments. In established prostate cancer cell lines, a decrease in cell viability and in phospho-biomarker expression was observed. Although apoptosis was not induced, a G1 growth arrest was observed in PTEN null LNCaP cells, but not in BPH1 or PC3 cells...
August 22, 2017: Oncotarget
https://www.readbyqxmd.com/read/28904884/circulating-tumor-cells-and-cdx-models-as-a-tool-for-preclinical-drug-development
#6
REVIEW
Alice Lallo, Maximilian W Schenk, Kristopher K Frese, Fiona Blackhall, Caroline Dive
Lung cancers are the main cause of cancer-related deaths worldwide. Efforts placed to improve the survival of lung cancer patients and untangle the complexity of this disease, have resulted in the generation of hundreds of lung cancer cell lines and several genetically engineered mouse models (GEMMs). Although these research tools have extended our knowledge of lung cancer, improvement in the clinical care of lung cancer patients have been limited overall, with measured optimism regarding initial responses to targeted therapies in stratified subgroups of patients...
August 2017: Translational Lung Cancer Research
https://www.readbyqxmd.com/read/28904384/targeting-the-vulnerability-to-nad-depletion-in-b-cell-acute-lymphoblastic-leukemia
#7
S Takao, W Chien, V Madan, D-C Lin, L-W Ding, Q-Y Sun, A Mayakonda, M Sudo, L Xu, Y Chen, Y-Y Jiang, S Gery, M Lill, E Park, W Senapedis, E Baloglu, M Müschen, H P Koeffler
Although substantial progress has been made in the treatment of B-cell acute lymphoblastic leukemia (B-ALL), the prognosis of patients with either refractory or relapsed B-ALL remains dismal. Novel therapeutic strategies are needed to improve the outcome of these patients. KPT-9274 is a novel dual inhibitor of p21-activated kinase 4 (PAK4) and nicotinamide phosphoribosyltransferase (NAMPT). PAK4 is a serine/threonine kinase, which regulates a variety of fundamental cellular processes. NAMPT is a rate-limiting enzyme in the salvage biosynthesis pathway of nicotinamide adenine dinucleotide (NAD), which plays a vital role in energy metabolism...
September 14, 2017: Leukemia: Official Journal of the Leukemia Society of America, Leukemia Research Fund, U.K
https://www.readbyqxmd.com/read/28903551/the-generation-and-application-of-patient-derived-xenograft-pdx-model-for-cancer-research
#8
Jaeyun Jung, Hyang Sook Seol, Suhwan Chang
Establishing an appropriate preclinical model is crucial for translational cancer research. The most common way that has been adopted by far is grafting cancer cell lines, derived from patients. Although this xenograft model is easy to generate, but has several limitations because this cancer model could not represent the unique features of each cancer patient sufficiently. Moreover, accumulating evidences demonstrate cancer is a highly heterogeneous disease so that a tumor is comprised of cancer cells with diverse characteristics...
September 13, 2017: Cancer Research and Treatment: Official Journal of Korean Cancer Association
https://www.readbyqxmd.com/read/28889386/patient-derived-bladder-cancer-xenografts
#9
Carina Bernardo, Lúcio Lara Santos
Patient-derived xenograft (PDX ) tumors are models developed by direct transplant of human tumors into immune-compromised hosts such as nude mice. These models retain the histological and genetic characteristics of the primary tumor and are considered a valuable platform for translational cancer research. This chapter describes the methodology to establish and propagate bladder cancer PDX model.
2018: Methods in Molecular Biology
https://www.readbyqxmd.com/read/28881819/apio-ee-9-is-a-novel-aurora-a-and-b-antagonist-that-suppresses-esophageal-cancer-growth-in-a-pdx-mouse-model
#10
Guoguo Jin, Ke Yao, Zhiping Guo, Zhenjiang Zhao, Kangdong Liu, Fangfang Liu, Hanyong Chen, Dhilli Rao Gorja, Kanamata Reddy, Ann M Bode, Ziming Dong, Zigang Dong
Esophageal cancer (EC) is one of the most aggressive malignancies of the upper aerodigestive tract. Over the past three decades, with advances in surgical techniques and treatment, the prognosis of esophageal cancer has only slowly improved. Thus identifying novel molecular targets and developing therapeutic agents are critical. Aurora kinases play a crucial role in mitosis and selective inhibitors might provide an effective therapeutic treatment for cancer. However, the role of Aurora kinases in EC is still inadequately studied...
August 8, 2017: Oncotarget
https://www.readbyqxmd.com/read/28870739/increased-vascular-permeability-in-the-bone-marrow-microenvironment-contributes-to-disease-progression-and-drug-response-in-acute-myeloid-leukemia
#11
Diana Passaro, Alessandro Di Tullio, Ander Abarrategi, Kevin Rouault-Pierre, Katie Foster, Linda Ariza-McNaughton, Beatriz Montaner, Probir Chakravarty, Leena Bhaw, Giovanni Diana, François Lassailly, John Gribben, Dominique Bonnet
The biological and clinical behaviors of hematological malignancies can be influenced by the active crosstalk with an altered bone marrow (BM) microenvironment. In the present study, we provide a detailed picture of the BM vasculature in acute myeloid leukemia using intravital two-photon microscopy. We found several abnormalities in the vascular architecture and function in patient-derived xenografts (PDX), such as vascular leakiness and increased hypoxia. Transcriptomic analysis in endothelial cells identified nitric oxide (NO) as major mediator of this phenotype in PDX and in patient-derived biopsies...
September 11, 2017: Cancer Cell
https://www.readbyqxmd.com/read/28860499/neuroblastoma-patient-derived-xenograft-cells-cultured-in-stem-cell-promoting-medium-retain-tumorigenic-and-metastatic-capacities-but-differentiate-in-serum
#12
Camilla U Persson, Kristoffer von Stedingk, Daniel Bexell, My Merselius, Noémie Braekeveldt, David Gisselsson, Marie Arsenian-Henriksson, Sven Påhlman, Caroline Wigerup
Cultured cancer cells serve as important models for preclinical testing of anti-cancer compounds. However, the optimal conditions for retaining original tumor features during in vitro culturing of cancer cells have not been investigated in detail. Here we show that serum-free conditions are critical for maintaining an immature phenotype of neuroblastoma cells isolated from orthotopic patient-derived xenografts (PDXs). PDX cells could be grown either as spheres or adherent on laminin in serum-free conditions with retained patient-specific genomic aberrations as well as tumorigenic and metastatic capabilities...
August 31, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28858862/pancreas-cancer-precision-treatment-using-avatar-mice-from-a-bioinformatics-perspective
#13
Javier Perales-Patón, Elena Piñeiro-Yañez, Héctor Tejero, Pedro P López-Casas, Manuel Hidalgo, Gonzalo Gómez-López, Fátima Al-Shahrour
Pancreatic ductal adenocarcinoma (PDAC) is a leading cause of cancer-related death among solid malignancies. Unfortunately, PDAC lethality has not substantially decreased over the past 20 years. This aggressiveness is related to the genomic complexity and heterogeneity of PDAC, but also to the absence of an effective screening for the detection of early-stage tumors and a lack of efficient therapeutic options. Therefore, there is an urgent need to improve the arsenal of anti-PDAC drugs for an effective treatment of these patients...
2017: Public Health Genomics
https://www.readbyqxmd.com/read/28855353/met-grb2-signaling-associated-complexes-correlate-with-oncogenic-met-signaling-and-sensitivity-to-met-kinase-inhibitors
#14
Matthew A Smith, Thomas Licata, Aliya Lakhani, Marileila Varella-Garcia, Hans-Ulrich Schildhaus, Vincent Vuaroqueaux, Balazs Halmos, Alain Borczuk, Y Ann Chen, Ben C Creelan, Theresa A Boyle, Eric B Haura
PURPOSE: Targeting MET in cancer is hampered by lack of diagnostics that accurately reflect high MET signaling and dependence. We hypothesized that assays reflecting MET signaling associated protein complexes could redefine tumors dependent on MET and could add additional precision beyond genomic assessments. EXPERIMENTAL DESIGN: We utilized biochemical approaches, cellular viability studies and proximity ligation assays to assess MET dependence. We examined MET signaling complexes in lung cancer patient specimens (N=406) and patient-derived xenograft models of solid tumors (N=308)...
August 29, 2017: Clinical Cancer Research: An Official Journal of the American Association for Cancer Research
https://www.readbyqxmd.com/read/28854237/tumor-engraftment-in-patient-derived-xenografts-of-pancreatic-ductal-adenocarcinoma-is-associated-with-adverse-clinicopathological-features-and-poor-survival
#15
Ilaria Pergolini, Vicente Morales-Oyarvide, Mari Mino-Kenudson, Kim C Honselmann, Matthew W Rosenbaum, Sabikun Nahar, Marina Kem, Cristina R Ferrone, Keith D Lillemoe, Nabeel Bardeesy, David P Ryan, Sarah P Thayer, Andrew L Warshaw, Carlos Fernández-Del Castillo, Andrew S Liss
Patient-derived xenograft (PDX) tumors are powerful tools to study cancer biology. However, the ability of PDX tumors to model the biological and histological diversity of pancreatic ductal adenocarcinoma (PDAC) is not well known. In this study, we subcutaneously implanted 133 primary and metastatic PDAC tumors into immunodeficient mice. Fifty-seven tumors were successfully engrafted and even after extensive passaging, the histology of poorly-, moderately-, and well-differentiated tumors was maintained in the PDX models...
2017: PloS One
https://www.readbyqxmd.com/read/28851812/a-first-in-class-twist1-inhibitor-with-activity-in-oncogene-driven-lung-cancer
#16
Zachary A Yochum, Jessica Cades, Lucia Mazzacurati, Neil M Neumann, Susheel K Khetarpal, Suman Chatterjee, Hailun Wang, Myriam A Attar, Eric H-B Huang, Sarah Nh Chatley, Katriana Nugent, Ashwin Somasundaram, Johnathan Engh, Andrew J Ewald, Yoon-Jae Cho, Charles M Rudin, Phuoc T Tran, Timothy F Burns
TWIST1, an epithelial-mesenchymal transition (EMT) transcription factor, is critical for oncogene-driven non-small cell lung cancer (NSCLC) tumorigenesis. Given the potential of TWIST1 as a therapeutic target, a chemical-bioinformatic approach using connectivity mapping (CMAP) analysis was used to identify TWIST1 inhibitors. Characterization of the top ranked candidates from the unbiased screen revealed that harmine, a harmala alkaloid, inhibited multiple TWIST1 functions including single-cell dissemination, suppression of normal branching in 3D epithelial culture, and proliferation of oncogene driver-defined NSCLC cells...
August 29, 2017: Molecular Cancer Research: MCR
https://www.readbyqxmd.com/read/28830923/frequent-genetic-aberrations-in-the-cdk4-pathway-in-acral-melanoma-indicate-the-potential-for-cdk4-6-inhibitors-in-targeted-therapy
#17
Yan Kong, Xinan Sheng, Xiaowen Wu, Junya Yan, Meng Ma, Jiayi Yu, Lu Si, Zhihong Chi, Chuanliang Cui, Jie Dai, Yiqian Li, Huan Yu, Tianxiao Xu, Huan Tang, Bixia Tang, Lili Mao, Bin Lian, Xuan Wang, Xieqiao Yan, Siming Li, Jun Guo
PURPOSE: Effective therapies for the majority of metastatic acral melanoma (AM) patients has not been established. Thus, we investigated genetic aberrations of CDK4 pathway in AM and evaluate the efficacy of CDK4/6 inhibitors in targeted therapy of AM. EXPERIMENTAL DESIGN: A total of 514 primary AM samples were examined for the copy number variations (CNVs) of CDK4 pathway-related genes, including Cdk4, Ccnd1 and P16INK4a, by QuantiGenePlex DNA Assay. The sensitivity of established AM cell lines and patient-derived xenograft (PDX) containing typical CDK4 aberrations to CDK4/6 inhibitors was evaluated...
August 22, 2017: Clinical Cancer Research: An Official Journal of the American Association for Cancer Research
https://www.readbyqxmd.com/read/28810913/selinexor-kpt-330-demonstrates-anti-tumor-efficacy-in-preclinical-models-of-triple-negative-breast-cancer
#18
Natalia Paez Arango, Erkan Yuca, Ming Zhao, Kurt W Evans, Stephen Scott, Charissa Kim, Ana Maria Gonzalez-Angulo, Filip Janku, Naoto T Ueno, Debu Tripathy, Argun Akcakanat, Aung Naing, Funda Meric-Bernstam
BACKGROUND: Selinexor (KPT-330) is an oral agent that has been shown to inhibit the nuclear exporter XPO1. Given the pressing need for novel therapies for triple-negative breast cancer (TNBC), we sought to determine the antitumor effects of selinexor in vitro and in vivo. METHODS: Twenty-six breast cancer cell lines of different breast cancer subtypes were treated with selinexor in vitro. Cell proliferation assays were used to measure the half-maximal inhibitory concentration (IC50) and to test the effects in combination with chemotherapy...
August 15, 2017: Breast Cancer Research: BCR
https://www.readbyqxmd.com/read/28808038/the-phosphatidylinositol-3-kinase-pathway-as-a-potential-therapeutic-target-in-bladder-cancer
#19
Shuxiong Zeng, Yanjun Zhu, Ai-Hong Ma, Weimin Yu, Hongyong Zhang, Tzu-Yin Lin, Wei Shi, Clifford G Tepper, Paul T Henderson, Susan Airhart, Jianming Guo, Chuanliang Xu, Ralph de Vere White, Chong-Xian Pan
PURPOSE: Activation of the phosphatidylinositol 3-kinase (PI3K) pathway occurs in over 40% of bladder urothelial cancers. The aim of this study is to determine the therapeutic potential, the underlying action and resistant mechanisms of drugs targeting the PI3K pathway. EXPERIMENTAL DESIGN: Urothelial cancer cell lines and patient-derived xenografts (PDXs) were analyzed for alterations of the PI3K pathway and for their sensitivity to the small molecule inhibitor pictilisib alone and in combination with cisplatin and/or gemcitabine...
August 14, 2017: Clinical Cancer Research: An Official Journal of the American Association for Cancer Research
https://www.readbyqxmd.com/read/28806950/precision-medicine-approaches-to-lung-adenocarcinoma-with-concomitant-met-and-her2-amplification
#20
Doo-Yi Oh, Kyungsoo Jung, Ji-Young Song, Seokhwi Kim, Sang Shin, Yong-Jun Kwon, Ensel Oh, Woong-Yang Park, Sang Yong Song, Yoon-La Choi
BACKGROUND: Patient-derived xenograft (PDX) models are important tools in precision medicine and for the development of targeted therapies to treat cancer patients. This study aimed to evaluate our precision medicine strategy that integrates genomic profiling and preclinical drug-screening platforms, in order to personalize cancer treatments using PDX models. METHODS: We performed array-comparative genomic hybridization, microarray, and targeted next-generation sequencing analyses, in order to determine the oncogenic driver mutations...
August 10, 2017: BMC Cancer
keyword
keyword
58003
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"