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https://www.readbyqxmd.com/read/28548122/recommendations-for-reporting-tumor-budding-in-colorectal-cancer-based-on-the-international-tumor-budding-consensus-conference-itbcc-2016
#1
Alessandro Lugli, Richard Kirsch, Yoichi Ajioka, Fred Bosman, Gieri Cathomas, Heather Dawson, Hala El Zimaity, Jean-François Fléjou, Tine Plato Hansen, Arndt Hartmann, Sanjay Kakar, Cord Langner, Iris Nagtegaal, Giacomo Puppa, Robert Riddell, Ari Ristimäki, Kieran Sheahan, Thomas Smyrk, Kenichi Sugihara, Benoît Terris, Hideki Ueno, Michael Vieth, Inti Zlobec, Phil Quirke
Tumor budding is a well-established independent prognostic factor in colorectal cancer but a standardized method for its assessment has been lacking. The primary aim of the International Tumor Budding Consensus Conference (ITBCC) was to reach agreement on an international, evidence-based standardized scoring system for tumor budding in colorectal cancer. The ITBCC included nine sessions with presentations, a pre-meeting survey and an e-book covering the key publications on tumor budding in colorectal cancer...
May 26, 2017: Modern Pathology: An Official Journal of the United States and Canadian Academy of Pathology, Inc
https://www.readbyqxmd.com/read/28546418/single-cell-dna-sequencing-reveals-a-late-dissemination-model-in-metastatic-colorectal-cancer
#2
Marco L Leung, Alexander Davis, Ruli Gao, Anna Casasent, Yong Wang, Emi Sei, Eduardo Sanchez, Dipen Maru, Scott Kopetz, Nicholas E Navin
Metastasis is a complex biological process that has been difficult to delineate in human colorectal (CRC) cancer patients. A major obstacle in understanding metastatic lineages is the extensive intratumor heterogeneity at the primary and metastatic tumor sites. To address this problem, we developed a highly-multiplexed single cell DNA sequencing approach to trace the metastatic lineages of two CRC patients with matched liver metastases. Single cell copy number or mutational profiling was performed, in addition to bulk exome and targeted deep-sequencing...
May 25, 2017: Genome Research
https://www.readbyqxmd.com/read/28545888/delivering-safer-immunotherapies-for-cancer
#3
Lauren Milling, Yuan Zhang, Darrell J Irvine
Cancer immunotherapy is now a powerful clinical reality, with a steady progression of new drug approvals and a massive pipeline of additional treatments in clinical and preclinical development. However, modulation of the immune system can be a double-edged sword: Drugs that activate immune effectors are prone to serious non-specific systemic inflammation and autoimmune side effects. Drug delivery technologies have an important role to play in harnessing the power of immune therapeutics while avoiding on-target/off-tumor toxicities...
May 22, 2017: Advanced Drug Delivery Reviews
https://www.readbyqxmd.com/read/28544324/albumin-templated-manganese-dioxide-nanoparticles-for-enhanced-radioisotope-therapy
#4
Longlong Tian, Qian Chen, Xuan Yi, Jiawen Chen, Chao Liang, Yu Chao, Kai Yang, Zhuang Liu
Although nanoparticle-based drug delivery systems have been widely explored for tumor-targeted delivery of radioisotope therapy (RIT), the hypoxia zones of tumors on one hand can hardly be reached by nanoparticles with relatively large sizes due to their limited intratumoral diffusion ability, on the other hand often exhibit hypoxia-associated resistance to radiation-induced cell damage. To improve RIT treatment of solid tumors, herein, radionuclide (131) I labeled human serum albumin (HSA)-bound manganese dioxide nanoparticles ((131) I-HSA-MnO2 ) are developed as a novel RIT nanomedicine platform that is responsive to the tumor microenvironment (TME)...
May 19, 2017: Small
https://www.readbyqxmd.com/read/28541485/histologically-defined-intratumoral-sequencing-uncovers-evolutionary-cues-into-conserved-molecular-events-driving-gliomagenesis
#5
Antony Prabhu, Pravin Kesarwani, Shiva Kant, Stewart F Graham, Prakash Chinnaiyan
BACKGROUND: Glioblastoma represents an archetypal example of a heterogeneous malignancy. To understand the diverse molecular consequences of this complex tumor ecology, we analyzed RNA-seq data generated from commonly identified intra-tumoral structures in glioblastoma enriched using laser capture microdissection. METHODS: Raw gene-level fragments per kilobase of transcript per million reads mapped (FPKM) values and the associated clinical data were acquired from the publically available Ivy GAP database and analyzed using MetaboAnalyst (v...
May 25, 2017: Neuro-oncology
https://www.readbyqxmd.com/read/28540417/monitoring-early-response-to-chemoradiotherapy-with-18-f-fmiso-dynamic-pet-in-head-and-neck-cancer
#6
Milan Grkovski, Nancy Y Lee, Heiko Schöder, Sean D Carlin, Bradley J Beattie, Nadeem Riaz, Jonathan E Leeman, Joseph A O'Donoghue, John L Humm
PURPOSE: There is growing recognition that biologic features of the tumor microenvironment affect the response to cancer therapies and the outcome of cancer patients. In head and neck cancer (HNC) one such feature is hypoxia. We investigated the utility of (18)F-fluoromisonidazole (FMISO) dynamic positron emission tomography (dPET) for monitoring the early microenvironmental response to chemoradiotherapy in HNC. EXPERIMENTAL DESIGN: Seventy-two HNC patients underwent FMISO dPET scans in a customized immobilization mask (0-30 min dynamic acquisition, followed by 10 min static acquisitions starting at ∼95 min and ∼160 min post-injection) at baseline and early into treatment where patients have already received one cycle of chemotherapy and anywhere from five to ten fractions of 2 Gy per fraction radiation therapy...
May 24, 2017: European Journal of Nuclear Medicine and Molecular Imaging
https://www.readbyqxmd.com/read/28538872/melanoma-tumor-microenvironment-and-new-treatments
#7
Mara Huffenbaecher Giavina-Bianchi, Pedro Francisco Giavina-Bianchi, Cyro Festa
In the recent past years, many discoveries in the tumor microenvironment have led to changes in the management of melanoma and it is rising up hopes, specially, to those in advanced stages. FDA approved seven new drugs from 2011 to 2014. They are: Vemurafenib, Dabrafenib and Trametinib, kinases inhibitors used for patients that have BRAFV600E mutation; Ipilimumab (anti-CTLA4), Pembrolizumab (anti-PD-1) and Nivolumab (anti-PD-1), monoclonal antibodies that stimulate the immune system; and Peginterferon alfa-2b, an anti-proliferative cytokine used as adjuvant therapy...
March 2017: Anais Brasileiros de Dermatologia
https://www.readbyqxmd.com/read/28537894/intratumoral-depletion-of-regulatory-t-cells-using-cd25-targeted-photodynamic-therapy-in-a-mouse-melanoma-model-induces-antitumoral-immune-responses
#8
Dong Sun Oh, Heegon Kim, Ji Eun Oh, Hi Eun Jung, Yun Soo Lee, Ji-Ho Park, Heung Kyu Lee
Tumor immunotherapy aims to overcome the immunosuppressive microenvironment within tumors, and various approaches have been developed. Tumor-associated T regulatory cells (Tregs) suppress the activation and expansion of tumor antigen-specific effector T cells, thus, providing a permissive environment for tumor growth. Therefore, optimal strategies need to be established to deplete tumor-infiltrated Tregs because systemic depletion of Tregs can result in reduced anti-tumor effector cells and autoimmunity. Here, to selectively deplete Tregs in tumors, we intratumorally injected anti-CD25 antibodies conjugated to Chlorin e6 (Ce6), a photosensitizer that absorbs light to generate reactive oxygen species...
May 7, 2017: Oncotarget
https://www.readbyqxmd.com/read/28537761/correlation-analysis-of-18-f-fluorodeoxyglucose-and-18-f-fluoroazomycin-arabinoside-uptake-distributions-in-lung-tumours-during-radiation-therapy
#9
Dario Di Perri, John A Lee, Anne Bol, François-Xavier Hanin, Guillaume Janssens, Daniel Labar, Annie Robert, Edmond Sterpin, Xavier Geets
BACKGROUND: PET-guided dose painting (DP) aims to target radioresistant tumour regions in order to improve radiotherapy (RT) outcome. Besides the well-known [(18)F]fluorodeoxyglucose (FDG), the hypoxia positron emission tomography (PET) tracer [(18)F]fluoroazomycin arabinoside (FAZA) could provide further useful information to guide the radiation dose prescription. In this study, we compare the spatial distributions of FDG and FAZA PET uptakes in lung tumours. MATERIAL AND METHODS: Fourteen patients with unresectable lung cancer underwent FDG and FAZA 4D-PET/CT on consecutive days at three time-points: prior to RT (pre), and during the second (w2), and the third (w3) weeks of RT...
May 24, 2017: Acta Oncologica
https://www.readbyqxmd.com/read/28537714/enhanced-afterglow-performance-of-persistent-luminescence-implants-for-efficient-repeatable-photodynamic-therapy
#10
Wenpei Fan, Nan Lu, Can Xu, Yijing Liu, Jing Lin, Sheng Wang, Zheyu Shen, Zhen Yang, Junle Qu, Tianfu Wang, Siping Chen, Peng Huang, Xiaoyuan Chen
Persistent luminescence nanoparticles (PLNPs) have been used for bioimaging without autofluorescence background interference, but the poor afterglow performance impedes their further applications in cancer therapy. To overcome the Achilles' heel of PLNPs, herein we report the construction of injectable persistent luminescence implants (denoted as PL implants) as a built-in excitation source for efficient repeatable photodynamic therapy (PDT). The injectable ZGC (ZnGa1.996O4:Cr0.004) PL implants were prepared by dissolving ZGC PLNPs in poly(lactic-co-glycolic acid)/N-methylpyrrolidone oleosol, which demonstrated much stronger persistent luminescence (PersL) intensity and longer PersL lifetime than that of ZGC PLNPs both in vitro and in vivo...
May 26, 2017: ACS Nano
https://www.readbyqxmd.com/read/28536386/recombinant-poxvirus-and-the-tumor-microenvironment-oncolysis-immune-regulation-and-immunization
#11
REVIEW
Daniel W Sharp, Edmund C Lattime
Oncolytic viruses (OVs) are being extensively studied for their potential roles in the development of cancer therapy regimens. In addition to their direct lytic effects, OVs can initiate and drive systemic antitumor immunity indirectly via release of tumor antigen, as well as by encoding and delivering immunostimulatory molecules. This combination makes them an effective platform for the development of immunotherapeutic strategies beyond their primary lytic function. Engineering the viruses to also express tumor-associated antigens (TAAs) allows them to simultaneously serve as therapeutic vaccines, targeting and amplifying an immune response to TAAs...
August 12, 2016: Biomedicines
https://www.readbyqxmd.com/read/28535990/intravenous-and-intratumoral-injection-of-pluronic-p94-the-effect-of-administration-route-on-biodistribution-and-tumor-retention
#12
C Santini, A Arranja, A G Denkova, F Schosseler, K Morawska, P Dubruel, E Mendes, M de Jong, M Bernsen
Pluronics P94 are block-copolymer showing prolonged circulation time and tumor-cell internalization in vitro, suggesting a potential for tumor accumulation and as a drug carrier. Here we report the results of the radiolabeled-P94 unimers (P94-(111)In-DTPA) on tumor uptake/retention and biodistribution after intravenous and intratumoral administration injection to tumor-bearing mice. Intravenous administration results in a high radioactive signal in the liver; while in tumor and other healthy tissues only little levels of radioactivity could be measured...
May 20, 2017: Nanomedicine: Nanotechnology, Biology, and Medicine
https://www.readbyqxmd.com/read/28535651/-study-of-susceptibility-weighted-imaging-on-mr-and-pathologic-findings-to-distinguish-benign-or-malignant-soft-tissue-tumor
#13
J Liu, Y Chen, X M Bao, X L Ling, J P Ding, Z K Zhang
Objective: To explore the diagnostic performance of susceptibility weighted imaging (SWI)in distinguishing benign or malignant soft tissue tumor, and to study pathological observation. Methods: Sixty-eight patients with soft tissue tumor, who received no previous treatment or invasive examination, received routine preoperative MRI examination and SWI scanning. The graduation and distribution of intratumoral susceptibility signal intensity(ITSS) and proportion of tumor volume were observed.The pathological results were also included for comparative analysis...
May 23, 2017: Zhonghua Zhong Liu za Zhi [Chinese Journal of Oncology]
https://www.readbyqxmd.com/read/28533668/rate-of-local-tumor-progression-following-radiofrequency-ablation-of-pathologically-early-hepatocellular-carcinoma
#14
Yoshiteru Hao, Kazushi Numata, Tomohiro Ishii, Hiroyuki Fukuda, Shin Maeda, Masayuki Nakano, Katsuaki Tanaka
AIM: To evaluate whether pathologically early hepatocellular carcinoma (HCC) exhibited local tumor progression after radiofrequency ablation (RFA) less often than typical HCC. METHODS: Fifty pathologically early HCCs [tumor diameter (mm): mean, 15.8; range, 10-23; follow-up days after RFA: median, 1213; range, 216-2137] and 187 typical HCCs [tumor diameter (mm): mean, 15.6; range, 6-30; follow-up days after RFA: median, 1116; range, 190-2328] were enrolled in this retrospective study...
May 7, 2017: World Journal of Gastroenterology: WJG
https://www.readbyqxmd.com/read/28530155/an-oncolytic-adenovirus-encoding-decorin-and-gm-csf-inhibits-tumor-growth-in-a-colorectal-tumor-model-by-targeting-pro-tumorigenic-signals-and-via-immune-activation
#15
Zhao Liu, Yuefeng Yang, Xiaoyan Zhang, Hao Wang, Weidong Xu, Hua Wang, FengJun Xiao, Zhigang Bai, Hongwei Yao, Xuemei Ma, Lan Jin, Chu-Tse Wu, Prem Seth, Zhongtao Zhang, Lisheng Wang
In advanced and metastatic stages of colorectal cancer (CRC), reduced sensitivity to conventional strategies is still a major obstacle to successful treatments. Decorin is an important regulator in the development and progression of various cancers. To examine if CRC patients have altered decorin levels, expression of decorin and its target genes, Met and vascular endothelial growth factor A (VEGFA) were analyzed in their tumors. Compared to normal tissues, decorin expression was reduced in CRC patients' tumors, while, there were increased Met and VEGFA levels...
May 20, 2017: Human Gene Therapy
https://www.readbyqxmd.com/read/28530127/an-oncolytic-adenovirus-expressing-snord44-and-gas5-exhibits-anti-tumor-effect-in-colorectal-cancer-cells
#16
Sujing Yuan, Yu Wu, Yigang Wang, Jianhua Chen, Liang Chu
SNORD44 is a C/D box small nucleolar RNA, and low expresses in breast cancer and head and neck squamous cell carcinoma tissues. Its host gene is growth arrest specific transcript 5 (GAS5), which is a long noncoding RNA. GAS5 is down-regulated in colorectal cancer (CRC), and overexpression of GAS5 suppresses cell proliferation. However, the function of SNORD44 in CRC remains largely unknown, and the application of SNORD44 combined with GAS5 in CRC treatment has not been reported. In this study, the expression levels of SNORD44 and GAS5 were measured in CRC tissues by qRT-PCR...
May 20, 2017: Human Gene Therapy
https://www.readbyqxmd.com/read/28529645/tumor-penetrating-theranostic-nanoparticles-for-enhancement-of-targeted-and-image-guided-drug-delivery-into-peritoneal-tumors-following-intraperitoneal-delivery
#17
Ning Gao, Erica N Bozeman, Weiping Qian, Liya Wang, Hongyu Chen, Malgorzata Lipowska, Charles A Staley, Y Andrew Wang, Hui Mao, Lily Yang
The major obstacles in intraperitoneal (i.p.) chemotherapy of peritoneal tumors are fast absorption of drugs into the blood circulation, local and systemic toxicities, inadequate drug penetration into large tumors, and drug resistance. Targeted theranostic nanoparticles offer an opportunity to enhance the efficacy of i.p. therapy by increasing intratumoral drug delivery to overcome resistance, mediating image-guided drug delivery, and reducing systemic toxicity. Herein we report that i.p. delivery of urokinase plasminogen activator receptor (uPAR) targeted magnetic iron oxide nanoparticles (IONPs) led to intratumoral accumulation of 17% of total injected nanoparticles in an orthotopic mouse pancreatic cancer model, which was three-fold higher compared with intravenous delivery...
2017: Theranostics
https://www.readbyqxmd.com/read/28529631/theranostic-performance-of-acoustic-nanodroplet-vaporization-generated-bubbles-in-tumor-intertissue
#18
Yi-Ju Ho, Chih-Kuang Yeh
Solid tumors with poorly perfused regions reveal some of the treatment limitations that restrict drug delivery and therapeutic efficacy. Acoustic droplet vaporization (ADV) has been applied to directly disrupt vessels and release nanodroplets, ADV-generated bubbles (ADV-Bs), and drugs into tumor tissue. In this study, we investigated the in vivo behavior of ADV-Bs stimulated by US, and evaluated the possibility of moving intertissue ADV-Bs into the poorly perfused regions of solid tumors. Intravital imaging revealed intertissue ADV-B formation, movement, and cavitation triggered by US, where the distance of intertissue ADV-B movement was 33-99 µm per pulse...
2017: Theranostics
https://www.readbyqxmd.com/read/28529585/efficacy-of-recombinant-human-adenovirus-p53-combined-with-chemotherapy-for-locally-advanced-cervical-cancer-a-clinical-trial
#19
Jie Xiao, Jian Zhou, Min Fu, Li Liang, Qiaoling Deng, Xiaoyun Liu, Fumin Liu
The aim of this study was to evaluate the efficacy and safety of recombinant human adenovirus-p53 (rhAd-p53) combined with neoadjuvant chemotherapy in treatment of locally advanced cervical cancer (LACC). A total of 40 patients with LACC (stage IB2 to IIIA) were randomized into 2 groups (n=20 each): PVB group (cisplatin + vincristine + bleomycin, intravenously) and combined group (rhAd-p53 gene therapy + neoadjuvant chemotherapy). Both groups underwent a course of chemotherapy; the only exception was the injection of the rhAd-p53 solution 1×10(12) VP intratumorally at an interval of three days thrice in the combined group thereafter...
May 2017: Oncology Letters
https://www.readbyqxmd.com/read/28528698/microrna-signatures-and-molecular-subtypes-of-glioblastoma-the-role-of-extracellular-transfer
#20
Jakub Godlewski, Ruben Ferrer-Luna, Arun K Rooj, Marco Mineo, Franz Ricklefs, Yuji S Takeda, M Oskar Nowicki, Elżbieta Salińska, Ichiro Nakano, Hakho Lee, Ralph Weissleder, Rameen Beroukhim, E Antonio Chiocca, Agnieszka Bronisz
Despite the importance of molecular subtype classification of glioblastoma (GBM), the extent of extracellular vesicle (EV)-driven molecular and phenotypic reprogramming remains poorly understood. To reveal complex subpopulation dynamics within the heterogeneous intratumoral ecosystem, we characterized microRNA expression and secretion in phenotypically diverse subpopulations of patient-derived GBM stem-like cells (GSCs). As EVs and microRNAs convey information that rearranges the molecular landscape in a cell type-specific manner, we argue that intratumoral exchange of microRNA augments the heterogeneity of GSC that is reflected in highly heterogeneous profile of microRNA expression in GBM subtypes...
May 17, 2017: Stem Cell Reports
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