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https://www.readbyqxmd.com/read/28431267/mir-19-targeting-of-gsk3%C3%AE-mediates-sulforaphane-suppression-of-lung-cancer-stem-cells
#1
Jianyun Zhu, Shijia Wang, Yue Chen, Xiaoting Li, Ye Jiang, Xue Yang, Yuan Li, Xiaoqian Wang, Yu Meng, Mingming Zhu, Xiao Ma, Cong Huang, Rui Wu, Chunfeng Xie, Shanshan Geng, Jieshu Wu, Caiyun Zhong, Hongyu Han
Cancer stem cells (CSCs) play a central role in the development of cancer. The canonical Wnt/β-catenin pathway is critical for maintaining stemness of CSCs. Phytochemicals from dietary compounds possess anti-CSCs properties and have been characterized as promising therapeutic agents for the prevention and treatment of many cancers. To date, the involvement and function of miR-19, a key oncogenic miRNA, in regulating Wnt/β-catenin pathway and lung CSCs has not been defined. Meanwhile, the effect of sulforaphane (SFN) on lung CSCs also remains to be elucidated...
April 5, 2017: Journal of Nutritional Biochemistry
https://www.readbyqxmd.com/read/28430648/radioimmunotherapy-for-cd133-colonic-cancer-stem-cells-inhibits-tumor-development-in-nude-mice
#2
Dinghu Weng, Xueyan Jin, Saimei Qin, Xiaoli Lan, Chong Chen, Xun Sun, Xianliang She, Changling Dong, Rui An
Accumulating evidence indicates that cancer stem cells (CSCs) are the cause of tumor drug/radio-resistance or distant metastasis; therefore, it is essential to eliminate CSCs to cure cancer completely. The purpose of this study was to utilize radioimmunotherapy (RIT) to target CD133(+) colonic CSCs and observe whether this prevented tumor development, by assessing the maximum tolerated dose (MTD) of HCT116 tumor-bearing nude mice with escalating doses of 131I-AC133.1 monoclonal antibody (mAb), and determining the therapeutic efficacy of RIT with 131I-AC133...
April 6, 2017: Oncotarget
https://www.readbyqxmd.com/read/28430578/involvement-of-polo-like-kinase-1-plk1-in-quiescence-regulation-of-cancer-stem-like-cells-of-the-gastric-cancer-cell-lines
#3
Lin Zhu, Sheng Xing, Li Zhang, Jian-Min Yu, Cheng Lin, Wei-Jun Yang
Cancer stem cells (CSCs) have been hypothesized to initiate tumor growth and be resistant to chemoradiotherapy, and these processes appear to be closely related to CSC quiescence. Here, a CSC-like cell population with a high level of CD44 expression was obtained from the human gastric cancer cell lines MKN45 and MKN74. Using a PKH26-labeling retention assay, quiescent CSC-like cells with low levels of Ki67 and PCNA expression were found in spheres formed in serum-free medium, and exhibited resistance to drug and radiation treatments...
April 5, 2017: Oncotarget
https://www.readbyqxmd.com/read/28429101/human-circulating-and-tissue-gastric-cancer-stem-cells-display-distinct-epithelial-mesenchymal-features-and-behaviors
#4
Shengliang Zhang, Yanna Shang, Tie Chen, Xin Zhou, Wengtong Meng, Chuanwen Fan, Ran Lu, Qiaorong Huang, Xue Li, Xu Hong, Zongguang Zhou, Jiankun Hu, Xianming Mo
INTRODUCTION: Metastasis is a leading cause of cancer-related-deaths worldwide. Recently, cancer stem cells (CSCs) have been believed to be responsible for tumor initiation and metastasis, but till now, difference of cellular features and behaviors between CSCs from tumor tissues (TCSCs) and circulation (CCSCs) remains largely unknown, which hinders the progression of targeted therapies for metastasis. METHODS AND RESULTS: Here, we provide the features of circulating gastric cancer stem cells (CGCSCs) isolated from human gastric adenocarcinoma...
April 20, 2017: Journal of Cancer Research and Clinical Oncology
https://www.readbyqxmd.com/read/28428713/microrna-145-exerts-tumor-suppressive-and-chemo-resistance-lowering-effects-by-targeting-cd44-in-gastric-cancer
#5
Jian-Feng Zeng, Xiao-Qiu Ma, Lin-Pei Wang, Wei Wang
AIM: To determine the potential roles of CD4 and microRNA (miR)-145 in gastric cancer. METHODS: The levels of CD44 and miR-145 were determined in gastric cancer cells. Quantitative real-time polymerase chain reaction was used to measure to the level of CD44 mRNA. A luciferase reporter assay and western blotting were performed to examine the effect of miR-145 on CD44 expression. Tumor sphere and MTT assays were carried out to evaluate the self-renewal and chemo-resistance properties of gastric cancer cells...
April 7, 2017: World Journal of Gastroenterology: WJG
https://www.readbyqxmd.com/read/28428276/micellar-delivery-of-mir-34a-modulator-rubone-and-paclitaxel-in-resistant-prostate-cancer
#6
Di Wen, Yang Peng, Feng Lin, Rakesh K Singh, Ram I Mahato
Treatment of prostate cancer with paclitaxel (PTX) often fails due to development of chemoresistance caused by downregulation of the tumor suppressor gene miR-34a. In this study, we demonstrate that co-delivery of PTX and 2'-hydroxy-2,4,4',5,6'-pentamethoxychalcone (termed rubone) drives upregulation of miR-34a and chemosensitizes PTX-resistant prostate cancer cells, killing both cancer stem-like cells (CSCs) and bulk tumor cells. Rubone upregulated miR-34a and reversed its downstream target genes in DU145-TXR and PC3-TXR cells...
April 20, 2017: Cancer Research
https://www.readbyqxmd.com/read/28427648/sonochemical-synthesis-characterization-and-effects-of-temperature-power-ultrasound-and-reaction-time-on-the-morphological-properties-of-two-new-nanostructured-mercury-ii-coordination-supramolecule-compounds
#7
Payam Hayati, Ali Reza Rezvani, Ali Morsali, Daniel Ruiz Molina, Samira Geravand, Salvio Suarez-Garcia, Miguel Angel Moreno Villaecija, S García-Granda, Rafael Mendoza-Meroño, Pascal Retailleau
Two new mercury(II) coordination supramolecular compounds (CSCs) (1D and 0D), [Hg(L)(I)2]n (1) and [Hg2(L')2(SCN)2]·2H2O (2) (L=2-amino-4-methylpyridine and L'=2,6-pyridinedicarboxlic acid), have been synthesized under different experimental conditions. Micrometric crystals (bulk) or nano-sized materials have been obtained depending on using the branch tube method or sonochemical irradiation. All materials have been characterized by field emission scanning electron microscope (FESEM), scanning electron microscopy (SEM), powder X-ray diffraction (PXRD) and FT-IR spectroscopy...
July 2017: Ultrasonics Sonochemistry
https://www.readbyqxmd.com/read/28427635/sonochemical-synthesis-of-two-new-zinc-ii-1-10-phenanthroline-coordination-supramolecular-compounds-new-precursors-to-produce-nano-sized-zinc-ii-oxide
#8
Mohammad Jaafar Soltanian Fard, Payam Hayati, Azita Firoozadeh, Jan Janczak
Nanoparticles of two zinc(II) coordination supramolecule compounds (CSCs), [Zn(L)Cl2] (1) and [Zn(L)Br2] (2) L=1,10-phen=1,10-phenanthroline ligand, have been synthesized by use of a sonochemical process and characterized by scanning electron microscopy (SEM), X-ray powder diffraction (XRPD), Fourier transform infrared (FTIR) spectroscopy and elemental analyses. The single crystal X-ray data of compounds 1 and 2 imply that the Zn(+2) ions are four coordinated. Topological analysis shows that the compound 1 and 2 are new topology for net: 1,3M4-1...
July 2017: Ultrasonics Sonochemistry
https://www.readbyqxmd.com/read/28427511/role-of-hypoxia-inducible-factors-hif-in-the-maintenance-of-stemness-and-malignancy-of-colorectal-cancer
#9
REVIEW
Ramakrishna Vadde, Sarojamma Vemula, Rajeswari Jinka, Neha Merchant, Pallaval Veera Bramhachari, Ganji Purnachandra Nagaraju
Hypoxia is a condition of insufficient tissue oxygenation, which is observed during normal development as well as tumorigenesis and its response at the cellular level is primarily mediated through hypoxia inducible factors (HIFs). HIFs have a significant role in the maintenance of stemness in both stem cells as well as in cancer stem cells (CSC) by acting as transcription factors. The CSCs are proposed to be the driving force of colon tumorigenesis and malignancy. These HIFs play a significant role in a wide range of diseases including colon cancer...
May 2017: Critical Reviews in Oncology/hematology
https://www.readbyqxmd.com/read/28423495/afatinib-radiosensitizes-head-and-neck-squamous-cell-carcinoma-cells-by-targeting-cancer-stem-cells
#10
Muzafar A Macha, Satyanarayana Rachagani, Asif Khurshid Qazi, Rahat Jahan, Suprit Gupta, Anery Patel, Parthasarathy Seshacharyulu, Chi Lin, Sicong Li, Shuo Wang, Vivek Verma, Shosei Kishida, Michiko Kishida, Norifumi Nakamura, Toshiro Kibe, William M Lydiatt, Russell B Smith, Apar K Ganti, Dwight T Jones, Surinder K Batra, Maneesh Jain
The dismal prognosis of locally advanced and metastatic squamous cell carcinoma of the head and neck (HNSCC) is primarily due to the development of resistance to chemoradiation therapy (CRT). Deregulation of Epidermal Growth Factor Receptor (EGFR) signaling is involved in HNSCC pathogenesis by regulating cell survival, cancer stem cells (CSCs), and resistance to CRT. Here we investigated the radiosensitizing activity of the pan-EGFR inhibitor afatinib in HNSCC in vitro and in vivo. Our results showed strong antiproliferative effects of afatinib in HNSCC SCC1 and SCC10B cells, compared to immortalized normal oral epithelial cells MOE1a and MOE1b...
March 28, 2017: Oncotarget
https://www.readbyqxmd.com/read/28423035/genetic-profiling-of-putative-breast-cancer-stem-cells-from-malignant-pleural-effusions
#11
Verena Tiran, Stefanie Stanzer, Ellen Heitzer, Michael Meilinger, Christopher Rossmann, Sigurd Lax, Oleksiy Tsybrovskyy, Nadia Dandachi, Marija Balic
A common symptom during late stage breast cancer disease is pleural effusion, which is related to poor prognosis. Malignant cells can be detected in pleural effusions indicating metastatic spread from the primary tumor site. Pleural effusions have been shown to be a useful source for studying metastasis and for isolating cells with putative cancer stem cell (CSC) properties. For the present study, pleural effusion aspirates from 17 metastatic breast cancer patients were processed to propagate CSCs in vitro...
2017: PloS One
https://www.readbyqxmd.com/read/28420235/garcinol-from-garcinia-indica-downregulates-cancer-stem-like-cell-biomarker-aldh1a1-in-nsclc-a549-cells-through-ddit3-activation
#12
Jinhan Wang, Liwen Wang, Chi-Tang Ho, Kunsheng Zhang, Qiang Liu, Hui Zhao
Non-small cell lung cancer (NSCLC) is the most common type of lung cancer and patients with NSCLC show high mortality rates still because of failure to clean up cancer stem cells (CSCs). The anticancer activity of phytochemical garcinol has been identified in various cancer cell models. However, the effect of garcinol on NSCLC cell lines is still not clear. Of the NSCLC cell lines we tested, A549 cells were the most sensitive to garcinol. Interestingly, Aldehyde Dehydrogenase 1 Family Member A1 (ALDH1A1) is preferentially expressed in A549 cells and downregulated by the addition of garcinol...
April 18, 2017: Journal of Agricultural and Food Chemistry
https://www.readbyqxmd.com/read/28418868/grik2-has-a-role-in-the-maintenance-of-urothelial-carcinoma-stem-like-cells-and-its-expression-is-associated-with-poorer-prognosis
#13
Ryuta Inoue, Yoshihiko Hirohashi, Hiroshi Kitamura, Sachiyo Nishida, Aiko Murai, Akari Takaya, Eri Yamamoto, Masahiro Matsuki, Toshiaki Tanaka, Terufumi Kubo, Munehide Nakatsugawa, Takayuki Kanaseki, Tomohide Tsukahara, Noriyuki Sato, Naoya Masumori, Toshihiko Torigoe
Cancer stem-like cells (CSCs)/cancer-initiating cells (CICs) are small sub-population of cancer cells that are endowed with higher tumor-initiating ability, self-renewal ability and differentiation ability. CSCs/CICs could be isolated as high aldehyde dehydrogenase 1 activity cells (ALDH1high) from various cancer samples. In this study, we isolated urothelial carcinoma CSCs/CICs as ALDHhigh cells and investigated the molecular aspects. ALDH1high cells showed greater sphere-forming ability and higher tumor-initiating ability in immune-deficient mice than those of ALDH1low cells, indicating that CSCs/CICs were enriched in ALDH1high cells...
March 16, 2017: Oncotarget
https://www.readbyqxmd.com/read/28417539/usp22-mediates-the-multidrug-resistance-of-hepatocellular-carcinoma-via-the-sirt1-akt-mrp1-signaling-pathway
#14
Sunbin Ling, Jie Li, Qiaonan Shan, Haojiang Dai, Di Lu, Xue Wen, Penghong Song, Haiyang Xie, Lin Zhou, Jimin Liu, Xiao Xu, Shusen Zheng
Drug treatments for hepatocellular carcinoma (HCC) often fail because of multidrug resistance (MDR). The mechanisms of MDR are complex but cancer stem cells (CSC), which are able to self-renew and differentiate, have recently been shown to be involved. The deubiquitinating enzyme ubiquitin-specific protease 22 (USP22) is a marker for CSCs. This study aimed to elucidate the role of USP22 in MDR of HCC and the underlying mechanisms. Using in vitro and in vivo assays, we found that modified USP22 levels were responsible for the altered drug-resistant phenotype of BEL7402 and BEL/FU cells...
April 18, 2017: Molecular Oncology
https://www.readbyqxmd.com/read/28416802/rna-editing-dependent-epitranscriptome-diversity-in-cancer-stem-cells
#15
REVIEW
Qingfei Jiang, Leslie A Crews, Frida Holm, Catriona H M Jamieson
Cancer stem cells (CSCs) can regenerate all facets of a tumour as a result of their stem cell-like capacity to self-renew, survive and become dormant in protective microenvironments. CSCs evolve during tumour progression in a manner that conforms to Charles Darwin's principle of natural selection. Although somatic DNA mutations and epigenetic alterations promote evolution, post-transcriptional RNA modifications together with RNA binding protein activity (the 'epitranscriptome') might also contribute to clonal evolution through dynamic determination of RNA function and gene expression diversity in response to environmental stimuli...
April 18, 2017: Nature Reviews. Cancer
https://www.readbyqxmd.com/read/28415606/taz-induces-lung-cancer-stem-cell-properties-and-tumorigenesis-by-up-regulating-aldh1a1
#16
Jihang Yu, Adel Alharbi, Hongchao Shan, Yawei Hao, Brooke Snetsinger, Michael J Rauh, Xiaolong Yang
Recent studies suggest that lung cancer stem cells (CSCs) may play major roles in lung cancer. Therefore, identification of lung CSC drivers may provide promising targets for lung cancer. TAZ is a transcriptional co-activator and key downstream effector of the Hippo pathway, which plays critical roles in various biological processes. TAZ has been shown to be overexpressed in lung cancer and involved in tumorigenicity of lung epithelial cells. However, whether TAZ is a driver for lung CSCs and tumor formation in vivo is unknown...
March 21, 2017: Oncotarget
https://www.readbyqxmd.com/read/28415588/smad-inhibitor-induces-csc-differentiation-for-effective-chemosensitization-in-cyclin-d1-and-tgf-%C3%AE-smad-regulated-liver-cancer-stem-cell-like-cells
#17
Wei Xia, Chung Mau Lo, Randy Y C Poon, Tan To Cheung, Albert C Y Chan, Lin Chen, Sitian Yang, George S W Tsao, Xiao Qi Wang
Understanding cancer stem cell (CSC) maintenance pathways is critical for the development of CSC-targeting therapy. Here, we investigated the functional role of the cyclin D1-dependent activation of Smad2/3 and Smad4 in hepatocellular carcinoma (HCC) CSCs and in HCC primary tumors. Cyclin D1 sphere-derived xenograft tumor models were employed to evaluate the therapeutic effects of a Smad inhibitor in combination with chemotherapy. Cyclin D1 overexpression confers stemness properties by enhancing single sphere formation, enhancing the CD90+ and EpCAM+ population, increasing stemness gene expression, and increasing chemoresistance...
March 21, 2017: Oncotarget
https://www.readbyqxmd.com/read/28415561/phosphorylation-of-hsf1-at-serine-326-residue-is-related-to-the-maintenance-of-gynecologic-cancer-stem-cells-through-expression-of-hsp27
#18
Kazuyo Yasuda, Yoshihiko Hirohashi, Tasuku Mariya, Aiko Murai, Yuta Tabuchi, Takafumi Kuroda, Hiroki Kusumoto, Akari Takaya, Eri Yamamoto, Terufumi Kubo, Munehide Nakatsugawa, Takayuki Kanaseki, Tomohide Tsukahara, Yasuaki Tamura, Hiroshi Hirano, Tadashi Hasegawa, Tsuyoshi Saito, Noriyuki Sato, Toshihiko Torigoe
Cancer stem-like cells (CSCs)/ cancer-initiating cells (CICs) are defined by their higher tumor-initiating ability, self-renewal capacity and differentiation capacity. CSCs/CICs are resistant to several therapies including chemotherapy and radiotherapy. CSCs/CICs thus are thought to be responsible for recurrence and distant metastasis, and elucidation of the molecular mechanisms of CSCs/CICs are essential to design CSC/CIC-targeting therapy. In this study, we analyzed the molecular aspects of gynecological CSCs/CICs...
March 18, 2017: Oncotarget
https://www.readbyqxmd.com/read/28414327/a-novel-antibody-against-cancer-stem-cell-biomarker-dclk1-s-is-potentially-useful-for-assessing-colon-cancer-risk-after-screening-colonoscopy
#19
Shubhashish Sarkar, Vsevolod L Popov, Malaney R O'Connell, Heather L Stevenson, Brian S Lee, Robert A Obeid, Gurinder K Luthra, Pomila Singh
DCLK1 expression is critically required for maintaining growth of human colon cancer cells (hCCCs). Human colorectal tumors (CRCs) and hCCCs express a novel short isoform of DCLK1 (DCLK1-S; isoform 2) from β-promoter of hDCLK1 gene, while normal colons express long isoform (DCLK1-L; isoform 1) from 5'(α)-promoter, suggesting that DCLK1-S, and not DCLK1-L, marks cancer stem cells (CSCs). Even though DCLK1-S differs from DCLK1-L by only six amino acids, we succeeded in generating a monospecific DCLK1-S-Antibody (PS41014), which does not cross-react with DCLK1-L, and specifically detects CSCs...
April 17, 2017: Laboratory Investigation; a Journal of Technical Methods and Pathology
https://www.readbyqxmd.com/read/28411208/lgr5-cancer-stem-cells-drive-primary-and-metastatic-colorectal-cancer
#20
(no author information available yet)
LGR5(+) colorectal cancer CSCs are dispensable for primary tumor growth due to plasticity.
April 14, 2017: Cancer Discovery
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