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Patients derived xenograft mouse model cancer (PDX)

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https://www.readbyqxmd.com/read/28315646/procedure-for-horizontal-transfer-of-patient-derived-xenograft-tumors-to-eliminate-corynebacterium-bovis
#1
Christopher A Manuel, Stacey M Bagby, Julie A Reisinger, Umarani Pugazhenthi, Todd M Pitts, Stephen B Keysar, John J Arcaroli, Jori K Leszczynski
Human patient-derived xenograft (PDX) tumors, propagated in immunodeficient mice, are rapidly growing in use as a model for cancer research. Horizontal transfer between mice, without in vitro cell culture, allows these tumors to retain many of their unique characteristics from their individual patient of origin. However, the immunodeficient mouse strains used to grow these tumors are susceptible to numerous opportunistic pathogens, including Corynebacterium bovis. At our institution, 2 in vivo tumor banks of PDX tumors had been maintained within nude mouse colonies enzootically infected with C...
March 1, 2017: Journal of the American Association for Laboratory Animal Science: JAALAS
https://www.readbyqxmd.com/read/28249646/chromosomal-abnormalities-and-molecular-landscape-of-metastasizing-mucinous-salivary-adenocarcinoma
#2
Alex Panaccione, Yi Zhang, Yanfang Mi, Yoshitsugu Mitani, Guo Yan, Manju L Prasad, W Hayes McDonald, Adel K El-Naggar, Wendell G Yarbrough, Sergey V Ivanov
BACKGROUND: Mucinous adenocarcinoma of the salivary gland (MAC) is a lethal cancer with unknown molecular etiology and a high propensity to lymph node metastasis. Mostly due to its orphan status, MAC remains one of the least explored cancers that lacks cell lines and mouse models that could help translational and pre-clinical studies. Surgery with or without radiation remains the only treatment modality but poor overall survival (10-year, 44%) underscores the urgent need for mechanism-based therapies...
March 2017: Oral Oncology
https://www.readbyqxmd.com/read/28211314/procedure-for-horizontal-transfer-of-patient-derived-xenograft-tumors-to-eliminate-corynebacterium-bovis
#3
Christopher A Manuel Stacey M Bagby Julie A Reisinger Umarani Pugazhenthi Todd M Pitts Stephen B Keysar John J Arcaroli And Jori K Leszczynski
Human patient-derived xenograft (PDX) tumors, propagated in immunodeficient mice, are rapidly growing in use as amodelfor cancer research. Horizontal transfer between mice, without in vitro cell culture, allows these tumors to retainmany of their unique characteristics from their individual patient of origin. However, the immunodeficient mouse strainsused to grow these tumors are susceptible to numerous opportunistic pathogens, including Corynebacterium bovis. At ourinstitution, 2 in vivo tumor banks of PDX tumors had been maintained within nude mouse colonies enzootically infectedwith C...
February 16, 2017: Journal of the American Association for Laboratory Animal Science: JAALAS
https://www.readbyqxmd.com/read/28186974/a-notch-sensitive-upar-regulated-oncolytic-adenovirus-effectively-suppresses-pancreatic-tumor-growth-and-triggers-synergistic-anticancer-effects-with-gemcitabine-and-nab-paclitaxel
#4
Ana Mato-Berciano, Giulia Raimondi, Maria Victoria Maliandi, Ramon Alemany, Lluis Montoliu, Cristina Fillat
Notch signaling pathway is an embryonic program that becomes reactivated in pancreatic cancer and contributes to cancer stem cell (CSC) maintenance. We explored the concept of oncolytic adenoviral activity in response to Notch activation signaling, in the context of a chimeric promoter with uPAR regulatory sequences, as a strategy to drive its activity in neoplastic and CSC. We explored the advantages of a chemo-virotherapy approach based on synergistic combinations. Regulatory sequences recognized by the transcriptional factor CSL upstream a minimal uPAR promoter were engineered in adenoviral vectors and in the oncolytic adenovirus AdNuPARmE1A...
February 7, 2017: Oncotarget
https://www.readbyqxmd.com/read/28154808/patient-derived-xenograft-models-of-non-small-cell-lung-cancer-and-their-potential-utility-in-personalized-medicine
#5
Katherine M Morgan, Gregory M Riedlinger, Jeffrey Rosenfeld, Shridar Ganesan, Sharon R Pine
Traditional preclinical studies of cancer therapeutics have relied on the use of established human cell lines that have been adapted to grow in the laboratory and, therefore, may deviate from the cancer they were meant to represent. With the emphasis of cancer drug development shifting from non-specific cytotoxic agents to rationally designed molecularly targeted therapies or immunotherapy comes the need for better models with predictive value regarding therapeutic activity and response in clinical trials. Recently, the diversity and accessibility of immunodeficient mouse strains has greatly enhanced the production and utility of patient-derived xenograft (PDX) models for many tumor types, including non-small cell lung cancer (NSCLC)...
2017: Frontiers in Oncology
https://www.readbyqxmd.com/read/28120979/novel-iodinated-gold-nanoclusters-for-precise-diagnosis-of-thyroid-cancer
#6
Xin Chen, Huanhuan Zhu, Xin Huang, Peisong Wang, Fulei Zhang, Wei Li, Guang Chen, Bingdi Chen
As the most common endocrine malignancy with a high incidence, thyroid cancer lacks a dual-modal imaging method for precise diagnosis. An accurate and multimodal imaging system is pivotal to solve this problem. Herein, dual-modality fluorescence/Computed Tomography (CT) iodinated gold nanoclusters for malignant thyroid cancer visualization have been recently fabricated. In this study, innovative iodinated gold nanoclusters (AuNCs@BSA-I) were synthesized via Bovine serum albumin (BSA) and chloramine-T. AuNCs@BSA-I not only possess an ultra-small size and brilliant biocompatibility but also exhibit excellent fluorescence/CT imaging properties...
January 25, 2017: Nanoscale
https://www.readbyqxmd.com/read/28104906/interrogating-open-issues-in-cancer-precision-medicine-with-patient-derived-xenografts
#7
REVIEW
Annette T Byrne, Denis G Alférez, Frédéric Amant, Daniela Annibali, Joaquín Arribas, Andrew V Biankin, Alejandra Bruna, Eva Budinská, Carlos Caldas, David K Chang, Robert B Clarke, Hans Clevers, George Coukos, Virginie Dangles-Marie, S Gail Eckhardt, Eva Gonzalez-Suarez, Els Hermans, Manuel Hidalgo, Monika A Jarzabek, Steven de Jong, Jos Jonkers, Kristel Kemper, Luisa Lanfrancone, Gunhild Mari Mælandsmo, Elisabetta Marangoni, Jean-Christophe Marine, Enzo Medico, Jens Henrik Norum, Héctor G Palmer, Daniel S Peeper, Pier Giuseppe Pelicci, Alejandro Piris-Gimenez, Sergio Roman-Roman, Oscar M Rueda, Joan Seoane, Violeta Serra, Laura Soucek, Dominique Vanhecke, Alberto Villanueva, Emilie Vinolo, Andrea Bertotti, Livio Trusolino
Patient-derived xenografts (PDXs) have emerged as an important platform to elucidate new treatments and biomarkers in oncology. PDX models are used to address clinically relevant questions, including the contribution of tumour heterogeneity to therapeutic responsiveness, the patterns of cancer evolutionary dynamics during tumour progression and under drug pressure, and the mechanisms of resistance to treatment. The ability of PDX models to predict clinical outcomes is being improved through mouse humanization strategies and the implementation of co-clinical trials, within which patients and PDXs reciprocally inform therapeutic decisions...
April 2017: Nature Reviews. Cancer
https://www.readbyqxmd.com/read/28097235/a-patient-derived-xenograft-platform-to-study-brca-deficient-ovarian-cancers
#8
Erin George, Hyoung Kim, Clemens Krepler, Brandon Wenz, Mehran Makvandi, Janos L Tanyi, Eric Brown, Rugang Zhang, Patricia Brafford, Stephanie Jean, Robert H Mach, Yiling Lu, Gordon B Mills, Meenhard Herlyn, Mark Morgan, Xiaochen Zhang, Robert Soslow, Ronny Drapkin, Neil Johnson, Ying Zheng, George Cotsarelis, Katherine L Nathanson, Fiona Simpkins
Approximately 50% of high-grade serous ovarian cancers (HGSOCs) have defects in genes involved in homologous recombination (HR) (i.e., BRCA1/2). Preclinical models to optimize therapeutic strategies for HR-deficient (HRD) HGSOC are lacking. We developed a preclinical platform for HRD HGSOCs that includes primary tumor cultures, patient-derived xenografts (PDXs), and molecular imaging. Models were characterized by immunohistochemistry, targeted sequencing, and reverse-phase protein array analysis. We also tested PDX tumor response to PARP, CHK1, and ATR inhibitors...
January 12, 2017: JCI Insight
https://www.readbyqxmd.com/read/27941872/er-stress-protein-agr2-precedes-and-is-involved-in-the-regulation-of-pancreatic-cancer-initiation
#9
L Dumartin, W Alrawashdeh, S M Trabulo, T P Radon, K Steiger, R M Feakins, M P di Magliano, C Heeschen, I Esposito, N R Lemoine, T Crnogorac-Jurcevic
The mechanisms of initiation of pancreatic ductal adenocarcinoma (PDAC) are still largely unknown. In the present study, we analysed the role of anterior gradient-2 (AGR2) in the earliest stages of pancreatic neoplasia. Immunohistochemical analysis of chronic pancreatitis (CP) and peritumoral areas in PDAC tissues showed that AGR2 was present in tubular complexes (TC) and early pancreatic intraepithelial neoplasia (PanINs). Moreover, AGR2 was also found in discrete subpopulations of non-transformed cells neighbouring these pre-neoplastic lesions...
December 12, 2016: Oncogene
https://www.readbyqxmd.com/read/27935045/patient-derived-xenografts-of-gastrointestinal-cancers-are-susceptible-to-rapid-and-delayed-b-lymphoproliferation
#10
Sebastian M Dieter, Klara M Giessler, Mark Kriegsmann, Taronish D Dubash, Lino Möhrmann, Erik R Schulz, Christine Siegl, Sarah Weber, Hendrik Strakerjahn, Ava Oberlack, Ulrike Heger, Jianpeng Gao, Eva-Maria Hartinger, Felix Oppel, Christopher M Hoffmann, Nati Ha, Benedikt Brors, Felix Lasitschka, Alexis Ulrich, Oliver Strobel, Manfred Schmidt, Christof von Kalle, Martin Schneider, Wilko Weichert, K Roland Ehrenberg, Hanno Glimm, Claudia R Ball
Patient-derived cancer xenografts (PDX) are widely used to identify and evaluate novel therapeutic targets, and to test therapeutic approaches in preclinical mouse avatar trials. Despite their widespread use, potential caveats of PDX models remain considerably underappreciated. Here, we demonstrate that EBV-associated B-lymphoproliferations frequently develop following xenotransplantation of human colorectal and pancreatic carcinomas in highly immunodeficient NOD.Cg-Prkdc(scid) Il2rg(tm1Wjl) /SzJ (NSG) mice (18/47 and 4/37 mice, respectively), and in derived cell cultures in vitro...
March 15, 2017: International Journal of Cancer. Journal International du Cancer
https://www.readbyqxmd.com/read/27929464/labeling-of-breast-cancer-patient-derived-xenografts-with-traceable-reporters-for-tumor-growth-and-metastasis-studies
#11
Colton Hanna, Letty Kwok, Jessica Finlay-Schultz, Carol A Sartorius, Diana M Cittelly
The use of preclinical models to study tumor biology and response to treatment is central to cancer research. Long-established human cell lines, and many transgenic mouse models, often fail to recapitulate the key aspects of human malignancies. Thus, alternative models that better represent the heterogeneity of patients' tumors and their metastases are being developed. Patient-derived xenograft (PDX) models in which surgically resected tumor samples are engrafted into immunocompromised mice have become an attractive alternative as they can be transplanted through multiple generations,and more efficiently reflect tumor heterogeneity than xenografts derived from human cancer cell lines...
November 30, 2016: Journal of Visualized Experiments: JoVE
https://www.readbyqxmd.com/read/27917934/c-met-as-a-potential-therapeutic-target-in-ovarian-clear-cell-carcinoma
#12
Ha-Jeong Kim, Aera Yoon, Ji-Yoon Ryu, Young-Jae Cho, Jung-Joo Choi, Sang Yong Song, Heejin Bang, Ji Soo Lee, William Chi Cho, Chel Hun Choi, Jeong-Won Lee, Byoung-Gie Kim, Duk-Soo Bae
In this study, we investigated the therapeutic effects of c-MET inhibition in ovarian clear cell carcinoma (OCCC). Expression levels of c-MET in the epithelial ovarian cancers (EOCs) and normal ovarian tissues were evaluated using real-time PCR. To test the effects of c-MET inhibitors in OCCC cell lines, we performed MTT and apoptosis assays. We used Western blots to evaluate the expression of c-MET and its down-stream pathway. In vivo experiments were performed to test the effects of c-MET inhibitor on tumor growth in orthotopic mouse xenografts of OCCC cell line RMG1 and a patient-derived tumor xenograft (PDX) model of OCCC...
December 5, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27823983/genomic-profiling-is-predictive-of-response-to-cisplatin-treatment-but-not-to-pi3k-inhibition-in-bladder-cancer-patient-derived-xenografts
#13
Lei Wei, Sreenivasulu Chintala, Eric Ciamporcero, Swathi Ramakrishnan, May Elbanna, Jianmin Wang, Qiang Hu, Sean T Glenn, Mitsuko Murakami, Lu Liu, Eduardo Cortes Gomez, Yuchen Sun, Jacob Conroy, Kiersten Marie Miles, Kullappan Malathi, Sudha Ramaiah, Anand Anbarasu, Anna Woloszynska-Read, Candace S Johnson, Jeffrey Conroy, Song Liu, Carl D Morrison, Roberto Pili
PURPOSE: Effective systemic therapeutic options are limited for bladder cancer. In this preclinical study we tested whether bladder cancer gene alterations may be predictive of treatment response. EXPERIMENTAL DESIGN: We performed genomic profiling of two bladder cancer patient derived tumor xenografts (PDX). We optimized the exome sequence analysis method to overcome the mouse genome interference. RESULTS: We identified a number of somatic mutations, mostly shared by the primary tumors and PDX...
November 3, 2016: Oncotarget
https://www.readbyqxmd.com/read/27793847/dna-repair-capacity-in-multiple-pathways-predicts-chemoresistance-in-glioblastoma-multiforme
#14
Zachary D Nagel, Gaspar J Kitange, Shiv K Gupta, Brian A Joughin, Isaac A Chaim, Patrizia Mazzucato, Douglas A Lauffenburger, Jann N Sarkaria, Leona D Samson
Cancer cells can resist the effects of DNA-damaging therapeutic agents via utilization of DNA repair pathways, suggesting that DNA repair capacity (DRC) measurements in cancer cells could be used to identify patients most likely to respond to treatment. However, the limitations of available technologies have so far precluded adoption of this approach in the clinic. We recently developed fluorescence-based multiplexed host cell reactivation (FM-HCR) assays to measure DRC in multiple pathways. Here we apply a mathematical model that uses DRC in multiple pathways to predict cellular resistance to killing by DNA-damaging agents...
January 1, 2017: Cancer Research
https://www.readbyqxmd.com/read/27775705/pim1-kinase-inhibition-as-a-targeted-therapy-against-triple-negative-breast-tumors-with-elevated-myc-expression
#15
Dai Horiuchi, Roman Camarda, Alicia Y Zhou, Christina Yau, Olga Momcilovic, Sanjeev Balakrishnan, Alexandra N Corella, Henok Eyob, Kai Kessenbrock, Devon A Lawson, Lindsey A Marsh, Brittany N Anderton, Julia Rohrberg, Ratika Kunder, Alexey V Bazarov, Paul Yaswen, Michael T McManus, Hope S Rugo, Zena Werb, Andrei Goga
Triple-negative breast cancer (TNBC), in which cells lack expression of the estrogen receptor (ER), the progesterone receptor (PR) and the ERBB2 (also known as HER2) receptor, is the breast cancer subtype with the poorest outcome. No targeted therapy is available against this subtype of cancer owing to a lack of validated molecular targets. We previously reported that signaling involving MYC-an essential, pleiotropic transcription factor that regulates the expression of hundreds of genes-is disproportionally higher in triple-negative (TN) tumors than in receptor-positive (RP) tumors...
November 2016: Nature Medicine
https://www.readbyqxmd.com/read/27765934/patient-derived-mouse-models-of-cancer-need-to-be-orthotopic-in-order-to-evaluate-targeted-anti-metastatic-therapy
#16
Yukihiko Hiroshima, Ali Maawy, Yong Zhang, Nan Zhang, Takashi Murakami, Takashi Chishima, Kuniya Tanaka, Yasushi Ichikawa, Michael Bouvet, Itaru Endo, Robert M Hoffman
Patient-derived xenograft (PDX) mouse models of cancer are emerging as an important component of personalized precision cancer therapy. However, most models currently offered to patients have their tumors subcutaneously-transplanted in immunodeficient mice, which rarely metastasize. In contrast, orthotopic-transplant patient-derived models, termed patient-derived orthotopic xenografts (PDOX), usually metastasize as in the patient. We demonstrate in the present report why orthotopic models are so important for the patient, since primary and metastatic tumors developed in an orthotopic model can have differential chemosensitivity, not detectable in standard subcutaneous tumor models...
November 1, 2016: Oncotarget
https://www.readbyqxmd.com/read/27750381/molecular-heterogeneity-of-non-small-cell-lung-carcinoma-patient-derived-xenografts-closely-reflect-their-primary-tumors
#17
Dennis Wang, Nhu-An Pham, Jiefei Tong, Shingo Sakashita, Ghassan Allo, Lucia Kim, Naoki Yanagawa, Vibha Raghavan, Yuhong Wei, Christine To, Quang M Trinh, Maud H W Starmans, Michelle A Chan-Seng-Yue, Dianne Chadwick, Lei Li, Chang-Qi Zhu, Ni Liu, Ming Li, Sharon Lee, Vladimir Ignatchenko, Dan Strumpf, Paul Taylor, Nadeem Moghal, Geoffrey Liu, Paul C Boutros, Thomas Kislinger, Melania Pintilie, Igor Jurisica, Frances A Shepherd, John D McPherson, Lakshmi Muthuswamy, Michael F Moran, Ming-Sound Tsao
Availability of lung cancer models that closely mimic human tumors remains a significant gap in cancer research, as tumor cell lines and mouse models may not recapitulate the spectrum of lung cancer heterogeneity seen in patients. We aimed to establish a patient-derived tumor xenograft (PDX) resource from surgically resected non-small cell lung cancer (NSCLC). Fresh tumor tissue from surgical resection was implanted and grown in the subcutaneous pocket of non-obese severe combined immune deficient (NOD SCID) gamma mice...
February 1, 2017: International Journal of Cancer. Journal International du Cancer
https://www.readbyqxmd.com/read/27633667/influence-of-a-novel-histone-deacetylase-inhibitor-panobinostat-lbh589-on-the-growth-of-ovarian-cancer
#18
Leslie A Garrett, Whitfield B Growdon, Bo R Rueda, Rosemary Foster
BACKGROUND: Pre-clinical studies have demonstrated that natural and synthetic histone deacetylase (HDAC) inhibitors can impede the in vitro and in vivo growth of cell lines from a variety of gynecologic and other malignancies. We investigated the anti-tumor activity of panobinostat (LBH589) both in vitro and in vivo as either a single agent or in combination with conventional cytotoxic chemotherapy using patient-derived xenograft (PDX) models of primary serous ovarian tumors. METHODS: The ovarian cancer cell lines OVCAR8, SKOV3 and their paclitaxel-resistant derivatives OVCAR8-TR and SKOV3-TR were treated with increasing doses of LBH589...
September 15, 2016: Journal of Ovarian Research
https://www.readbyqxmd.com/read/27611664/quantitation-of-murine-stroma-and-selective-purification-of-the-human-tumor-component-of-patient-derived-xenografts-for-genomic-analysis
#19
Valentina E Schneeberger, Viola Allaj, Eric E Gardner, J T Poirier, Charles M Rudin
Patient-derived xenograft (PDX) mouse models are increasingly used for preclinical therapeutic testing of human cancer. A limitation in molecular and genetic characterization of PDX tumors is the presence of integral murine stroma. This is particularly problematic for genomic sequencing of PDX models. Rapid and dependable approaches for quantitating stromal content and purifying the malignant human component of these tumors are needed. We used a recently developed technique exploiting species-specific polymerase chain reaction (PCR) amplicon length (ssPAL) differences to define the fractional composition of murine and human DNA, which was proportional to the fractional composition of cells in a series of lung cancer PDX lines...
2016: PloS One
https://www.readbyqxmd.com/read/27608715/plasma-exosome-micrornas-are-indicative-of-breast-cancer
#20
Bethany N Hannafon, Yvonne D Trigoso, Cameron L Calloway, Y Daniel Zhao, David H Lum, Alana L Welm, Zhizhuang J Zhao, Kenneth E Blick, William C Dooley, W Q Ding
BACKGROUND: microRNAs are promising candidate breast cancer biomarkers due to their cancer-specific expression profiles. However, efforts to develop circulating breast cancer biomarkers are challenged by the heterogeneity of microRNAs in the blood. To overcome this challenge, we aimed to develop a molecular profile of microRNAs specifically secreted from breast cancer cells. Our first step towards this direction relates to capturing and analyzing the contents of exosomes, which are small secretory vesicles that selectively encapsulate microRNAs indicative of their cell of origin...
September 8, 2016: Breast Cancer Research: BCR
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