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https://www.readbyqxmd.com/read/29780259/delivery-of-bevacizumab-by-intracranial-injection-assessment-in-glioma-model
#1
Yu-Xiao Liu, Wen-Jia Liu, Hui-Ru Zhang, Zhi-Wen Zhang
Background: Many reports have indicated that the intravenous administration of bevacizumab produces a number of systemic side effects. Therefore, we investigated the therapeutic effects of intratumoral bevacizumab administration using a glioma animal model. Methods: The glioma cell lines U251 and U87 that carried luciferase were implanted into the brains of mice to develop glioma models. Glioma-bearing mice were treated with bevacizumab intravenously or intratumorally by Alzet micro-osmotic pumps, and the survival time of mice was monitored...
2018: OncoTargets and Therapy
https://www.readbyqxmd.com/read/29779430/intratumoral-immune-cells-expressing-pd-1-pd-l1-and-their-prognostic-implications-in-cancer-a-meta-analysis
#2
Younghoon Kim, Xianyu Wen, Nam Yun Cho, Gyeong Hoon Kang
BACKGROUND: The prognostic value of immune cells expressing programmed cell death 1 (PD-1) and PD-1 ligand 1 (PD-L1) in cancer are controversial, and the potential differential impact of using tissue microarrays and whole tissue sections to assess the positivity of immune cells has not been addressed. METHODS: The current study included 30 eligible studies with 7251 patients that evaluated the relationship between tumor-infiltrating lymphocytes expressing PD-1/PD-L1 and overall survival and disease-free survival, or progression-free survival...
May 1, 2018: International Journal of Biological Markers
https://www.readbyqxmd.com/read/29779072/intratumoral-heterogeneity-on-dedicated-breast-positron-emission-tomography-predicts-malignancy-grade-of-breast-cancer
#3
Norio Masumoto, Takayuki Kadoya, Shinsuke Sasada, Akiko Emi, Koji Arihiro, Morihito Okada
PURPOSE: Dedicated breast positron emission tomography (DbPET) provides detailed high-resolution images and can detect intratumoral heterogeneity using 18 F-fluorodeoxyglucose (FDG). We aimed to evaluate the correlation between FDG uptake on DbPET and the clinicopathological features of breast cancer, particularly those with an intratumoral heterogeneous distribution of FDG on DbPET. METHODS: We evaluated 195 consecutive patients with invasive breast cancer who underwent preoperative whole-body PET (WBPET) and DbPET concurrently between January 2016 and March 2017...
May 19, 2018: Breast Cancer Research and Treatment
https://www.readbyqxmd.com/read/29778891/leukocytes-and-drug-resistant-cancer-cells-are-targets-for-intracellular-delivery-by-adenoviral-dodecahedron
#4
Marta Jedynak, David Laurin, Patryk Dolega, Malgorzata Podsiadla-Bialoskorska, Inga Szurgot, Jadwiga Chroboczek, Ewa Szolajska
One of the major factors limiting the effectiveness of cancer chemotherapy is inefficient drug delivery. Systems enabling efficient delivery and enhanced intracellular uptake, appear particularly promising in this respect. Virus-like particle, adenoviral dodecahedron (Dd), employs receptor-mediated endocytosis for cell penetration and is able to deliver intracellularly dozens of cargo molecules attached to one particle. We focused on studying Dd properties in the context of cancer treatment, showing that intratumoral injection of Dd, assessed in mouse xenograft model, results in vector accumulation in tumor without spreading in off-target organs...
May 17, 2018: Nanomedicine: Nanotechnology, Biology, and Medicine
https://www.readbyqxmd.com/read/29777794/regulatory-t-cell-targeted-hybrid-nanoparticles-combined-with-immuno-checkpoint-blockage-for-cancer-immunotherapy
#5
Wenquan Ou, Raj Kumar Thapa, Liyuan Jiang, Soe Zar Chi, Milan Gautam, Jae-Hoon Chang, Jee-Heon Jeong, Sae Kwang Ku, Han-Gon Choi, Chul Soon Yong, Jong Oh Kim
Immunosuppression in tumor microenvironments induced by regulatory T (Treg) cells is regarded a critical mechanism of tumor immune escape and poses a major impediment to cancer immunotherapy. In this study, we developed tLyp1 peptide-conjugated hybrid nanoparticles for targeting Treg cells in the tumor microenvironment. The tLyp1 peptide-modified hybrid nanoparticles presented good stability and effective targeting to Treg cells, and they enhanced the effect of imatinib in downregulating Treg cell suppression through inhibition of STAT3 and STAT5 phosphorylation...
May 16, 2018: Journal of Controlled Release: Official Journal of the Controlled Release Society
https://www.readbyqxmd.com/read/29777785/psmd2-regulates-breast-cancer-cell-proliferation-and-cell-cycle-progression-by-modulating-p21-and-p27-proteasomal-degradation
#6
Yunhai Li, Jing Huang, Beilei Zeng, Dejuan Yang, Jiazheng Sun, Xuedong Yin, Mengqi Lu, Zhu Qiu, Weiyan Peng, Tingxiu Xiang, Hongzhong Li, Guosheng Ren
Alterations in the ubiquitin-proteasome system (UPS) and UPS-associated proteins have been implicated in the development of many human malignancies. In this study, we investigated the expression profiles of 797 UPS-related genes using HiSeq data from The Cancer Genome Atlas and identified that PSMD2 was markedly upregulated in breast cancer. High PSMD2 expression was significantly correlated with poor prognosis. Gene set enrichment analysis revealed that transcriptome signatures involving proliferation, cell cycle, and apoptosis were critically enriched in specimens with elevated PSMD2...
May 16, 2018: Cancer Letters
https://www.readbyqxmd.com/read/29775768/canine-pet-dog-tumor-microsurgery-and-intratumoral-concentration-and-safety-of-metronomic-chlorambucil-for-spontaneous-glioma-a-phase-i-clinical-trial
#7
R Timothy Bentley, Stephanie A Thomovsky, Margaret A Miller, Deborah W Knapp, Aaron A Cohen-Gadol
INTRODUCTION: Metronomic (daily low-dose) chlorambucil requires further study before implementation in human glioma. OBJECTIVE: Investigate the distribution and safety of metronomic chlorambucil in naturally occurring canine glioma. METHODS: Eight client-owned (pet) dogs with newly diagnosed spontaneous glioma were prospectively enrolled. Chlorambucil was administered preoperatively at 4 mg/m2 q 24hr for ≥ 3 days, and continued postoperatively until death or dose-limiting adverse events...
May 15, 2018: World Neurosurgery
https://www.readbyqxmd.com/read/29775280/fluorine-meets-amine-reducing-microenvironment-induced-amino-activatable-nanoprobes-for-19f-magnetic-resonance-imaging-of-bio-thiols
#8
Pingsheng Huang, Weisheng Guo, Guang Yang, Huijuan Song, Yuqing Wang, Chun Wang, Deling Kong, Weiwei Wang
19F MRI is of great significance for non-invasive imaging and detection of various diseases. However, the main obstacle in the application of 19F MRI agents stems from the unmet signal sensitivity, due to the poor water-solubility and restricted mobility of segments with high numbers of fluorine atoms. Herein, we report a kind of intracellular reducing microenvironment-induced amino-activatable 19F MRI nanoprobe, which can be used for specific imaging of bio-thiols. In principle, the nanoprobe has an initial architecture of hydrophobic core, where the trifluoromethyl-containing segments are compactly packed and 19F NMR/MRI signals are quenched ("OFF" state)...
May 18, 2018: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/29774221/magnetic-resonance-imaging-findings-for-differential-diagnosis-of-perianal-plexiform-schwannoma-case-report-and-review-of-the-literature
#9
Xue-Liang Sun, Ke Wen, Zhi-Zhong Xu, Xiao-Peng Wang
Plexiform schwannoma is an extremely rare variant of schwannoma, accounting for approximately 5% of cases. Due to the rarity and lack of typical symptoms, signs and radiological images, a definite diagnosis of plexiform schwannoma may not be made by clinicians prior to biopsy. In the present study, we report the first case (to our knowledge) of perianal plexiform schwannoma arising from the overlapped skin of the ischioanal fossa, and we propose an intratumorally nonenhanced circumferential capsule dividing the tumour into multiple homogeneously enhanced nodules as a magnetic resonance imaging feature to aid in the differential diagnosis of plexiform schwannoma from ancient schwannoma, cavernous haemangioma, liposarcoma and plexiform neurofibroma...
May 16, 2018: World Journal of Clinical Cases
https://www.readbyqxmd.com/read/29774124/long-term-exposure-to-carcinoma-associated-fibroblasts-makes-breast-cancer-cells-addictive-to-integrin-%C3%AE-1
#10
Angela Dittmer, Jürgen Dittmer
We studied the long-term effect of stromal factors on the development of fulvestrant-resistance (FR) and fulvestrant-induced dormancy (D). Sublines established from stroma-treated FR-cells (C-FR cells) and D-cells (C-D cells) show permanently high expression of integrin β1 as well as Bcl-3 and P-STAT3 (C-FR) or IGF1R (C-D). Yet, cells fail to withstand fulvestrant better and do not migrate or grow faster than control cells. Instead, C-D cells rely on stromal factors to perform as well as control cells. In addition, C-FR cells adapted to integrin β1 for growth in 3D cultures...
April 24, 2018: Oncotarget
https://www.readbyqxmd.com/read/29774112/rare-genetic-heterogeneity-within-single-tumor-discovered-for-the-first-time-in-colorectal-liver-metastases-after-liver-resection
#11
Mylène Sebagh, Nelly Bosselut, Alexandre Dos Santos, Marc-Antoine Allard, Aldrick Ruiz, Raphaël Saffroy, Daniel Cherqui, Eric Vibert, Denis Castaing, René Adam, Antonio Sa Cunha, Antoinette Lemoine
Effective individualized treatment of patients with colorectal liver metastases (CLM) requires tumor genotyping, usually based on the analysis of one single sample per patient. Therapy failure may partially be explained by sampling errors and/or intratumoral genetic heterogeneity. We aimed to demonstrate intratumoral genetic heterogeneity in CLM and enable pathologists to select tumor tissue for genotyping. All the tumors of 86 patients who underwent liver resection for a single CLM were reviewed. Of the 86 patients, 66 patients received chemotherapy and 20 patients did not receive chemotherapy before liver resection...
April 24, 2018: Oncotarget
https://www.readbyqxmd.com/read/29773553/intratumoral-androgen-levels-are-linked-to-tmprss2-erg-fusion-in-prostate-cancer
#12
Matias Knuuttila, Arfa Mehmood, Jenni Mäki-Jouppila, Henrik Ryberg, Pekka Taimen, Juha Knaapila, Otto Ettala, Peter J Bostrom, Claes Ohlsson, Mikko S Venäläinen, Asta Laiho, Laura L Elo, Petra Sipilä, Sari Makela, Matti Poutanen
Intratumoral androgen biosynthesis is one of the mechanisms involved in the progression of prostate cancer, and an important target for novel prostate cancer therapies. Using gas chromatography-tandem mass spectrometry and genome-wide RNA sequencing, we have analyzed androgen concentrations and androgen-regulated gene expression in cancerous and morphologically benign prostate tissue specimens and serum samples obtained from 48 primary prostate cancer patients. Intratumoral DHT concentrations were significantly higher in the cancerous tissues compared to benign prostate (p<0...
May 17, 2018: Endocrine-related Cancer
https://www.readbyqxmd.com/read/29771717/prognostic-predictive-value-of-preoperative-intratumoral-2-deoxy-2-18f-fluoro-d-glucose-uptake-heterogeneity-in-patients-with-high-grade-serous-ovarian-cancer
#13
Shuai Liu, Zheng Feng, Zhaoxia Jiang, Hao Wen, Junyan Xu, Herong Pan, Yu Deng, Lei Zhang, Xingzhu Ju, Xiaojun Chen, Xiaohua Wu
OBJECTIVE: This study aimed to explore the clinical and prognostic significance of pretreatment positron-emission tomography/computed tomography (PET/CT) parameters, especially 2-deoxy-2-(F)fluoro-D-glucose-based heterogeneity, in high-grade serous ovarian cancer (HGSC). MATERIALS AND METHODS: We retrospectively investigated 56 patients with HGSC who underwent PET/CT before primary surgery at our hospital between January 2010 and June 2015. None of these patients received neoadjuvant chemotherapy...
May 16, 2018: Nuclear Medicine Communications
https://www.readbyqxmd.com/read/29771107/design-and-synthesis-of-a-biocompatible-1d-coordination-polymer-as-anti-breast-cancer-drug-carrier-5-fu-in-vitro-and-in-vivo-studies
#14
Mahsa Rezaei, Alireza Abbasi, Rassoul Dinarvand, Mahmood Jeddi-Tehrani, Jan Janczak
Designable coordination polymers with suitable chemical diversities and biocompatible structures have been proposed as a promising class of vehicles for drug delivery systems. Here, we hydrothermally synthesized a novel one-dimensional (1D) coordination polymer, [Zn(H2 O)6 K2 (H2 BTC)2 (H2 O)4 ](H2 BTC)2 ·2H2 O, where H3 BTC = benzene-1,3,5-tricarboxylic acid (trimesic acid), cp.1. As the hydrogen bonds stabilized 1D chains in three dimensions, the cp.1 could be a good candidate for delivering small-molecule chemotherapeutics such as 5-fluorouracil (5-Fu)...
May 17, 2018: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/29770915/cytolytic-activity-score-to-assess-anticancer-immunity-in-colorectal-cancer
#15
Sumana Narayanan, Tsutomu Kawaguchi, Li Yan, Xuan Peng, Qianya Qi, Kazuaki Takabe
BACKGROUND: Elevated tumor-infiltrating lymphocytes (TILs) within the tumor microenvironment is a known positive prognostic factor in colorectal cancer (CRC). We hypothesized that since cytotoxic T cells release cytolytic proteins such as perforin (PRF1) and pro-apoptotic granzymes (GZMA) to attack cancer cells, a cytolytic activity score (CYT) would be a useful tool to assess anticancer immunity. METHODS: Genomic expression data were obtained from 456 patients from The Cancer Genome Atlas (TCGA)...
May 16, 2018: Annals of Surgical Oncology
https://www.readbyqxmd.com/read/29767262/transcutaneous-carbon-dioxide-enhances-the-antitumor-effect-of-radiotherapy-on-oral-squamous-cell-carcinoma
#16
Eiji Iwata, Takumi Hasegawa, Takeshi Ueha, Daisuke Takeda, Izumi Saito, Teruya Kawamoto, Toshihiro Akisue, Yoshitada Sakai, Ryohei Sasaki, Ryosuke Kuroda, Takahide Komori
Radiotherapy (RT) is one of the main treatment modalities for oral squamous cell carcinoma (OSCC), however, radioresistance is a major impediment to its clinical success and poses as a concern that needs to be addressed. Tumor hypoxia is known to be significantly associated with radioresistance in various malignancies, hence, resolving the hypoxic state of a tumor may improve the antitumor effect of RT on OSCC. We have previously revealed that transcutaneous CO2 induced mitochondrial apoptosis and suppressed tumor growth in OSCC by resolving hypoxia...
May 16, 2018: Oncology Reports
https://www.readbyqxmd.com/read/29767258/pd-l1-mrna-expression-in-egfr-mutant-lung-adenocarcinoma
#17
Kazutoshi Isobe, Atsushi Kakimoto, Tetuo Mikami, Kyohei Kaburaki, Hiroshi Kobayashi, Takahiro Yoshizawa, Yuta Nakano, Takashi Makino, Hajime Otsuka, Go Sano, Keishi Sugino, Susumu Sakamoto, Yujiro Takai, Naobumi Tochigi, Akira Iyoda, Sakae Homma
Molecular mechanisms of programmed death-ligand 1 (PD-L1) mRNA expression and roles of apoptosis and biomarkers are poorly understood in epidermal growth factor receptor (EGFR)-mutant lung adenocarcinoma patients. Thirty-three patients with recurrent postoperative EGFR-mutant lung adenocarcinoma (exon 19 deletion in 16, L858R in 15, G719C in 2 patients) treated with gefitinib were studied. PD-L1 mRNA expression of formalin-fixed paraffin-embedded paratumoral and intratumoral tissues was quantified by PCR. Correlations of PD-L1 mRNA expression with BIM, p53 upregulated modular of apoptosis (PUMA), human epidermal growth factor receptor 2 (HER2), mesenchymal-epithelial transition (MET), EGFR, and vascular endothelial growth factor A (VEGFA) were determined...
May 16, 2018: Oncology Reports
https://www.readbyqxmd.com/read/29764517/new-insights-from-the-widening-homogeneity-perspective-to-target-intratumor-heterogeneity
#18
REVIEW
Mengying Tong, Ziqian Deng, Xiaolong Zhang, Bin He, Mengying Yang, Wei Cheng, Quentin Liu
Precision medicine has shed new light on the treatment of heterogeneous cancer patients. However, intratumor heterogeneity strongly constrains the clinical benefit of precision medicine. Thus, rethinking therapeutic strategies from a different facet within the precision medicine framework will not only diversify clinical interventions, but also provide an avenue for precision medicine. Here, we explore the current approaches for targeting intratumor heterogeneity and their limitations. Furthermore, we propose a theoretical strategy with a "homogenization" feature based on iatrogenic evolutionary selection to target intratumor heterogeneity...
May 4, 2018: Cancer communications
https://www.readbyqxmd.com/read/29764498/talimogene-laherparepvec-combined-with-anti-pd-1-based-immunotherapy-for-unresectable-stage-iii-iv-melanoma-a-case-series
#19
Lillian Sun, Pauline Funchain, Jung Min Song, Patricia Rayman, Charles Tannenbaum, Jennifer Ko, Michael Mcnamara, C Marcela Diaz-Montero, Brian Gastman
BACKGROUND: Talimogene Laherparepvec (T-VEC) is an oncolytic virus approved as an intratumoral therapy for treating unresectable stage IIIB-IV metastatic melanoma. The mechanisms of action for T-VEC and checkpoint inhibitor are highly complementary. Recent studies have shown that combining checkpoint inhibitor therapy with T-VEC injection can lead to improved response rates for stage IIIB-IV melanoma patients. METHODS: We reviewed 10 consecutive cases of stage IIIC to stage IVM1b melanoma patients that received T-VEC plus checkpoint inhibitor(s) therapy (pembrolizumab, ipilimumab/nivolumab, or nivolumab) treated between June 2016 and August 2017 at the Cleveland Clinic with a median follow-up of 7 months (range: 4 to 13 months)...
May 16, 2018: Journal for Immunotherapy of Cancer
https://www.readbyqxmd.com/read/29761158/phase-ii-study-of-ruxolitinib-a-selective-jak1-2-inhibitor-in-patients-with-metastatic-triple-negative-breast-cancer
#20
Daniel G Stover, Carlos R Gil Del Alcazar, Jane Brock, Hao Guo, Beth Overmoyer, Justin Balko, Qiong Xu, Aditya Bardia, Sara M Tolaney, Rebecca Gelman, Maxwell Lloyd, Yu Wang, Yaomin Xu, Franziska Michor, Vivian Wang, Eric P Winer, Kornelia Polyak, Nancy U Lin
Preclinical data support a role for the IL-6/JAK2/STAT3 signaling pathway in breast cancer. Ruxolitinib is an orally bioavailable receptor tyrosine inhibitor targeting JAK1 and JAK2. We evaluated the safety and efficacy of ruxolitinib in patients with metastatic breast cancer. This was a non-randomized phase II study enrolling patients with refractory, metastatic triple-negative breast cancer. The primary endpoint was objective response by RECIST 1.1. The study was designed to enroll patients whose archival tumor tissue was pSTAT3-positive ( T -score >5) by central immunohistochemistry...
2018: NPJ Breast Cancer
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