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Cancer Biology & Therapy

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https://read.qxmd.com/read/30755064/lamc1-promotes-the-warburg-effect-in-hepatocellular-carcinoma-cells-by-regulating-pkm2-expression-through-akt-pathway
#1
GuanXiong Ye, Yong Qin, Shi Wang, DeBiao Pan, ShengQian Xu, ChengJun Wu, XinMei Wang, Jun Wang, HaiLin Ye, HeJuan Shen
Hepatocellular carcinoma (HCC), the most common aggressive malignancy of liver, is the third leading cause of cancer death across the world. Laminin gamma 1 (Lamc1), encodes laminin-γ1, an extracellular matrix protein involved in various progresses such as tumor cell proliferation and metabolism. In the present study, high expression of Lamc1 and PKM2 was observed in tumor tissues of HCC patients. In vitro, down-regulation of Lamc1 inhibited proliferation of HCC cells by promoting cell death, reduced glucose consumption and lactate production, accompanied by a decrease in the expression of glucose transporter 1 (GLUT1) and lactate dehydrogenase A (LDHA), and PTEN increased, as well as PTEN S380 and AKT S473/T308 phosphorylation decreased, while Lamc1 up-regulation had the opposite effect...
February 12, 2019: Cancer Biology & Therapy
https://read.qxmd.com/read/30744539/case-report-her2-amplification-as-a-resistance-mechanism-to-crizotinib-in-nsclc-with-met-exon-14-skipping
#2
Guanggui Ding, Jian Wang, Peikun Ding, Yuxin Wen, Lin Yang
Patients with non-small cell lung cancer (NSCLC) harboring MET exon 14 skipping can benefit from crizotinib treatment. Currently, the main resistance mechanisms to crizotinib are MET D1228N and Y1230C mutations. We reported a case of a Chinese NSCLC patient with MET exon 14 skipping detected by targeted next-generation sequencing (NGS) achieved clinical and imaging remission after crizotinib treatment. Then, amplification of multiple genes such as erb-b2 receptor tyrosine kinase 2 (HER2) was detected when disease progressed, indicating novel resistance mechanisms to crizotinib...
February 11, 2019: Cancer Biology & Therapy
https://read.qxmd.com/read/30739532/the-functional-roles-of-exosomes-derived-long-non-coding-rna-in-human-cancer
#3
Feiyu Chen, Ning Wang, Hor-Yue Tan, Wei Guo, Cheng Zhang, Yibin Feng
Cancer is one of the most pervasive causes of morbidity and mortality worldwide regardless of the fact that a majority of therapeutic strategies have been constantly invented. The survival rate of cancer patients remains unsatisfactory due to the late diagnosis, frequent metastasis and poor response to chemotherapeutics. Therefore, novel methods with high specificity and susceptibility for prompt diagnosis and precise treatment of cancer are imperative. Circulating RNA is located in bodily fluids, including urine, saliva, breast milk and naturally present in blood...
February 11, 2019: Cancer Biology & Therapy
https://read.qxmd.com/read/30739523/inhibition-of-linc00994-represses-malignant-behaviors-of-pancreatic-cancer-cells-interacting-with-mir-765-3p-runx2-axis
#4
Xuan Zhu, Xing Niu, Chunlin Ge
Pancreatic cancer exhibits one of the worst prognosis of all human cancers, and it is associated with gene dysregulation. Our microarray results first indicated long intergenic non-protein coding RNA 994 (LINC00994) as an upregulated long non-coding RNA (lncRNA) and miR-765-3p as a downregulated microRNA (miRNA) in pancreatic cancer tissues (Fold change ≥ 2 and P < 0.05; three paired samples). To investigate the role of LINC00994 in pancreatic carcinogenesis, a pair of short hairpin RNA (shRNA) was used to stably knock down the endogenous expression of LINC00994 in Panc-1 and AsPC-1 pancreatic cancer cells in vitro...
February 11, 2019: Cancer Biology & Therapy
https://read.qxmd.com/read/30727796/investigation-of-copper-cysteamine-nanoparticles-as-a-new-photosensitizer-for-anti-hepatocellular-carcinoma
#5
Xuejing Huang, Fengjie Wan, Lun Ma, Jonathan B Phan, Rebecca Xueyi Lim, Cuiping Li, Jiagui Chen, Jinghuan Deng, Yasi Li, Wei Chen, Min He
Hepatocellular carcinoma (HCC) is a primary malignancy of the liver and occurs predominantly in patients with underlying chronic liver disease and cirrhosis. HCC is now the third leading cause of cancer deaths worldwide, with over 500,000 people affected. However, there is no complete effective (ideal) treatment for liver cancer yet, and the new methods are expected to be discovered. Herein, for the first time, we report the anti-HCC effects of copper-cysteamine nanoparticles (Cu-Cy NPs), a new type of photosensitizers...
February 6, 2019: Cancer Biology & Therapy
https://read.qxmd.com/read/30712446/lox-and-acsl5-as-potential-relapse-markers-for-pancreatic-cancer-patients
#6
Weidong Ma, Ting Li, Si Wu, Jian Li, Xiuchao Wang, Hui Li
Pancreatic cancer is one of the most malignant diseases and has a poor prognosis. The screening and validation of biomarkers with predictive value for prognosis and treatment efficacy are important. To identify potential prognostic markers of pancreatic cancer patients, we conducted a study that included 99 pancreatic cancer patients. Three patients with PFS>18 months were enrolled in the treat group, and three patients with PFS<12 months were enrolled in the control group. Differentially expressed genes (DEGs) between these two groups were analyzed by whole-genome expression microarray...
February 3, 2019: Cancer Biology & Therapy
https://read.qxmd.com/read/30638113/functional-evaluation-of-variants-of-unknown-significance-in-the-brca2-gene-identified-in-genetic-testing
#7
Marie Heczkova, Eva Machackova, Peter Macinga, Eike Gallmeier, Monika Cahova, Julius Spicak, Milan Jirsa, Lenka Foretova, Tomas Hucl
Heterozygous germline BRCA2 mutations predispose to breast, ovarian, pancreatic and other types of cancer. The presence of a pathogenic mutation in patients or their family members warrants close surveillance or prophylactic surgery. Besides clearly pathogenic mutations, variants leading only to a single amino acid substitution are often identified. The influence of such variants on cancer risk is often unknown, making their presence a major clinical problem. When genetic methods are insufficient to classify these variants, functional assays with various cellular models are performed...
January 13, 2019: Cancer Biology & Therapy
https://read.qxmd.com/read/30626261/vastatin-the-nc1-domain-of-human-type-viii-collagen-a1-chain-is-linked-to-stromal-reactivity-and-elevated-in-serum-from-patients-with-colorectal-cancer
#8
Nicholas Willumsen, Lars Nannestad Jorgensen, Morten Asser Karsdal
Vastatin, a fragment derived from type VIII collagen, is one of the least studied collagen-derived matrikines. Vastatin can be detected in serum but little is known regarding the relevance of serum vastatin in colorectal cancer (CRC). In this study, serum vastatin was measured (ELISA) in 67 healthy controls and 48 CRC patients prior to resection and compared to clinicopathological parameters and serum biomarkers of stromal reactivity (C3M, VICM). Impact of resection and chemotherapy were evaluated by comparing baseline values with a 3-month follow-up sample (n = 23)...
January 9, 2019: Cancer Biology & Therapy
https://read.qxmd.com/read/30621501/antitumor-effect-of-curcumin-liposome-after-transcatheter-arterial-embolization-in-vx2-rabbits
#9
Xiuming Zhang, Feng Dai, Jun Chen, Xiaodong Xie, Hanzi Xu, Chenguang Bai, Wei Qiao, Wenrong Shen
BACKGROUND: Hypoxia may affect the therapeutic efficacy of transcatheter arterial embolization (TAE), which is widely used in nonsurgical hepatocellular carcinoma (HCC). Liposomal curcumin can exert anticancer effect. Our purpose is to explore the antitumor effect of liposomal curcumin on the HCC after TAE. METHODS: The HepG2 cells were cultured under hypoxic condition (1% O2 ) and then treated with curcumin liposome. Cell viability, apoptosis and cell cycle were respectively measured by CCK-8 and a flow cytometry...
January 8, 2019: Cancer Biology & Therapy
https://read.qxmd.com/read/30590988/kr%C3%A3-ppel-like-factor-6-splice-variant-1-klf6-sv1-overexpression-recruits-macrophages-to-participate-in-lung-cancer-metastasis-by-up-regulating-twist1
#10
Jian Wang, Xiao Wang, Yawei Wang, Shuguang Li, Xiuwen Wang
The aim of this study was to investigate the mechanism by which KLF6-SV1 promoted lung cancer metastasis through tumor-associated macrophages (TAMs). Plasmid transfection was used to construct cells that upregulated or silenced gene. Tumor-bearing mouse model was established using A549 cells. SP staining was performed to detect the CD163 and CD68. Six-well plates and Transwell chamber were used for co-culture of lung cancer A549 cells and macrophages. CCK-8 and Transwell assay were applied to detected the cell viability and migration respectively...
December 27, 2018: Cancer Biology & Therapy
https://read.qxmd.com/read/30582709/lncrna-rmrp-silence-curbs-neonatal-neuroblastoma-progression-by-regulating-microrna-206-tachykinin-1-receptor-axis-via-inactivating-extracellular-signal-regulated-kinases
#11
Juntao Pan, Da Zhang, Jiao Zhang, Pan Qin, Jiaxiang Wang
BACKGROUND: Neuroblastoma is the commonest malignancy in neonates. Long non-coding RNA (lncRNA) RNA component of mitochondrial RNA processing endoribonuclease (RMRP) has been reported to be an oncogenic factor in some malignancies. However, its roles and molecular mechanisms in neuroblastoma progression are poor defined. METHODS: The expression of RMRP, microRNA-206 (miR-206), and tachykinin-1 receptor (TACR1) mRNA was measured by RT-qPCR assay. Protein levels of TACR1, phosphorylated extracellular signal-regulated kinases (ERK) 1/2 (p-ERK1/2) and ERK1/2 were detected by western blot assay...
December 24, 2018: Cancer Biology & Therapy
https://read.qxmd.com/read/30580676/long-non-coding-rna-linc01133-silencing-exerts-antioncogenic-effect-in-pancreatic-cancer-through-the-methylation-of-dkk1-promoter-and-the-activation-of-wnt-signaling-pathway
#12
Yuan-Chi Weng, Jin Ma, Jun Zhang, Jian-Cheng Wang
Recent studies have acknowledged the critical roles played by long non-coding RNAs (lncRNAs) in the development and progression of pancreatic cancer. Therefore, the present study aimed to elucidate the mechanism underlying on how LINC01133 regulates the Wnt signaling pathway in pancreatic cancer. A microarray-based gene expression analysis was performed to identify the differentially expressed lncRNAs in pancreatic cancer. In addition, ectopic expression assays, knockdown experiments and gene reporter assays were conducted to clarify the role of LINC01133 in pancreatic cancer and to understand the interaction between LINC01133 and the methylation of DKK1 promoter...
December 22, 2018: Cancer Biology & Therapy
https://read.qxmd.com/read/30572778/combined-%C3%AE-programmed-death-1-monoclonal-antibody-blockade-and-fractionated-radiation-therapy-reduces-tumor-growth-in-mouse-el4-lymphoma
#13
Xiuyun Lin, Tao Zeng, Jiani Xiong, Qiong Zhang, Pan Jiang, Xiufeng Li, Shuchun Lin, Qianqian Xu, Huanjiao Weng, Haichun Lai, Huichun Gong, Jinxiang Lin, Niangmei Cheng, Xinling Tian, Yunlu Xu, Shubin Fang, Rong Jin, Zhiwei Chen, Jianbo Yang, Luke Morton, Bevan Yueh, Jizhen Lin
The programmed death (PD) pathway is frequently present in the tumor microenvironment (TME) and suppresses tumor immunity by inhibiting the activity of tumor-infiltrating lymphocytes (TILs), particularly, CD8+ lymphocytes. PD immunotherapy involves stimulation of the immune response in the region surrounding the tumor but is insufficient to prevent tumor progression. Therefore, in this study, we examined the effects of combined PD immunotherapy with fractionated radiotherapy (RT) on antitumor immunity and tumor growth in lymphoma...
December 20, 2018: Cancer Biology & Therapy
https://read.qxmd.com/read/30572767/detecting-and-phenotyping-of-aneuploid-circulating-tumor-cells-in-patients-with-various-malignancies
#14
Zhenlong Ye, Yongmei Ding, Zhuo Chen, Zhong Li, Shuo Ma, Zenghui Xu, Liang Cheng, Xinyue Wang, Xiaoxia Zhang, Na Ding, Qian Zhang, Qijun Qian
Circulating tumor cells (CTCs) have been exclusively studied and served to assess the clinical outcomes of treatments and progression of cancer. Most CTC data have mainly been derived from distinct cohorts or selected tumor types. In the present study, a total of 594 blood samples from 479 cases with 19 different carcinomas and 30 healthy samples were collected and analyzed by Subtraction enrichment method combined with immunostaining-fluorescence in situ hybridization (iFISH). Non-hematopoietic cells with aneuploid chromosome 8 (more than 2 copies) were regarded as positive CTCs...
December 20, 2018: Cancer Biology & Therapy
https://read.qxmd.com/read/30571927/neratinib-and-entinostat-combine-to-rapidly-reduce-the-expression-of-k-ras-n-ras-g%C3%AE-q-and-g%C3%AE-11-and-kill-uveal-melanoma-cells
#15
Laurence Booth, Jane L Roberts, Cindy Sander, Alshad S Lalani, John M Kirkwood, John F Hancock, Andrew Poklepovic, Paul Dent
There is no efficacious standard of care therapy for uveal melanoma. Unlike cutaneous disease, uveal melanoma does not exhibit RAS mutations but instead contains mutations with ~90% penetrance in either Gαq or Gα11 . Previously we demonstrated that neratinib caused ERBB1/2/4 and RAS internalization into autolysosomes which resulted in their proteolytic degradation. In PDX isolates of uveal melanoma, neratinib caused the internalization and degradation of Gαq and Gα11 in parallel with ERBB1 breakdown. These effects were enhanced by the HDAC inhibitor entinostat...
December 20, 2018: Cancer Biology & Therapy
https://read.qxmd.com/read/30514153/2-methoxy-5-3-4-5-trimethosyphenyl-seleninyl-phenol-reverses-egf-induced-cell-migration-and-invasion-through-down-regulation-of-mdm2-in-breast-cancer-cell-lines
#16
Dayong Zheng, Xing Chang, Yang Liu, Jingwen Xu, Wenfeng Gou, Zengqiang Li, Daiying Zuo, Weige Zhang, Yingliang Wu
2-Methoxy-5((3,4,5-trimethosyphenyl)seleninyl) phenol (SQ), a novel synthesized combretastatin A-4
(CA-4) analogue, is identified as a microtubule inhibitor and has been shown to exert anticancer activity in breast cancer cells. Here, we found that SQ reversed epidermal growth factor (EGF)-induced motility and invasion in breast cancer cell lines by the in vitro Wound healing and Transwell assay. Further studies showed that SQ treatment resulted in inhibitory alteration of EGF-stimulated epithelial-to-mesenchymal transition (EMT) and MMP-2 activity...
December 4, 2018: Cancer Biology & Therapy
https://read.qxmd.com/read/30489194/upregulation-of-long-non-coding-rna-nnt-as1-promotes-osteosarcoma-progression-by-inhibiting-the-tumor-suppressive-mir-320a
#17
Changhui Li, Shouyun Zhang, Tongguo Qiu, Yuanji Wang, David M Ricketts, Chao Qi
OBJECTIVE: To investigate the role and mechanism of action of nicotinamide nucleotide transhydrogenase antisense RNA 1 (NNT-AS1) in osteosarcoma (OS). METHODS: Bioinformatic analysis suggested miR-320a as potential target of NNT-AS1. Influence of NNT-AS1 overexpression or knockdown on OS cell proliferation, colony-formation, apoptosis, migration and invasion capacity was first investigated. Expression levels of NNT-AS1, miR-320a, beta-catenin, RUNX2, IGF-1R, c-Myc, Cyclin D1 and MMP13 were also evaluated by RT-qPCR and western blotting accordingly...
November 29, 2018: Cancer Biology & Therapy
https://read.qxmd.com/read/30481117/discovery-platform-for-inhibitors-of-igh-gene-enhancer-activity
#18
Nathan G Dolloff
Immunoglobulin heavy chain (IgH) translocations are common and early oncogenic events in B cell and plasma cell malignancies including B cell non-Hodgkin's lymphoma (NHL) and multiple myeloma (MM). IgH translocations bring oncogenes into close proximity with potent enhancer elements within the IgH locus, leading to oncogene up-regulation. As IgH enhancer activity is tightly controlled by B cell lineage-specific signaling and transcriptional networks, we hypothesized that IgH enhancers are potentially druggable targets/elements...
November 27, 2018: Cancer Biology & Therapy
https://read.qxmd.com/read/30481109/lncrna-tatdn1-contributes-to-the-cisplatin-resistance-of-non-small-cell-lung-cancer-through-tatdn1-mir-451-trim66-axis
#19
Linmei Wang, Xueqin Shang, Qingqing Feng
BACKGROUND: Chemoresistance has been considered to be a major obstacle for cancer therapy clinically. Long non-coding RNAs (LncRNAs) are asscociated with the development, prognosis and drug-resistance of non-small cell lung cancer (NSCLC). Whereas, the regulatory mechanism of lncRNA TATDN1 in the cisplatin resistance of NSCLC is still not clear. METHODS: The expression of TATDN1, miR-451 and TRIM66 in NSCLC tissues and cell lines were detected by qRT-PCR or western blot...
November 27, 2018: Cancer Biology & Therapy
https://read.qxmd.com/read/30462564/successful-treatment-of-a-braf-v600e-mutant-extracranial-metastatic-anaplastic-oligoastrocytoma-with-vemurafenib-and-everolimus
#20
Liangliang Shi, Zhenwei Zou, Qian Ding, Qing Liu, Hongxia Zhou, Xiaohua Hong, Gang Peng
BACKGROUND: Extracranial metastasis is a rare phenomenon of anaplastic oligoastrocytoma. When patients progress after comprehensive treatment, there is often no effective treatment. Rapid development of gene detection technology makes precision treatment of glioma possible. PATIENT AND METHODS: A 22-year-old girl was firstly diagnosed with anaplastic oligoastrocytoma WHO grade III-IV in 2014, and progressed rapidly after chemoradiotherapy in multiple extraneural lesions in 2016...
November 21, 2018: Cancer Biology & Therapy
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