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https://www.readbyqxmd.com/read/29328371/cd133-expression-predicts-post-operative-recurrence-in-patients-with-colon-cancer-with-peritoneal-metastasis
#1
Hiroshi Nagata, Soichiro Ishihara, Junko Kishikawa, Hirofumi Sonoda, Koji Murono, Shigenobu Emoto, Manabu Kaneko, Kazuhito Sasaki, Kensuke Otani, Takeshi Nishikawa, Toshiaki Tanaka, Tomomichi Kiyomatsu, Keisuke Hata, Kazushige Kawai, Hiroaki Nozawa
Despite extensive research on cancer stem cells in colorectal cancer, the impact of stem cell markers on patient survival remains unclear, particularly in those with distant metastasis. In this study, we focused on colon cancer with peritoneal metastasis and investigated the association between the expression of CD133, aldehyde dehydrogenase-1 (ALDH1) and leucine-rich repeating G-protein coupled receptor-5 (Lgr5), and disease prognosis. Putative stem cell marker expression was immunohistochemically evaluated in samples from 142 primary tumours and 75 peritoneal nodules...
January 8, 2018: International Journal of Oncology
https://www.readbyqxmd.com/read/29321622/evaluation-of-a-developmental-hierarchy-for-breast-cancer-cells-to-assess-risk-based-patient-selection-for-targeted-treatment
#2
Sarah A Bliss, Sunirmal Paul, Piotr W Pobiarzyn, Seda Ayer, Garima Sinha, Saumya Pant, Holly Hilton, Neha Sharma, Maria F Cunha, Daniel J Engelberth, Steven J Greco, Margarette Bryan, Magdalena J Kucia, Sham S Kakar, Mariusz Z Ratajczak, Pranela Rameshwar
This study proposes that a novel developmental hierarchy of breast cancer (BC) cells (BCCs) could predict treatment response and outcome. The continued challenge to treat BC requires stratification of BCCs into distinct subsets. This would provide insights on how BCCs evade treatment and adapt dormancy for decades. We selected three subsets, based on the relative expression of octamer-binding transcription factor 4 A (Oct4A) and then analysed each with Affymetrix gene chip. Oct4A is a stem cell gene and would separate subsets based on maturation...
January 10, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29307001/three-dimensional-cellular-arrangement-in-epithelial-ovarian-cancer-cell-lines-tov-21g-and-skov-3-is-associated-with-apoptosis-related-mirna-expression-modulation
#3
Aline Brito de Lima, Luciana Maria Silva, Nikole Gontijo Gonçales, Maria Raquel Santos Carvalho, Agnaldo Lopes da Silva Filho, Letícia da Conceição Braga
Epithelial ovarian cancer (EOC) is the most lethal gynecological malignancy, and the lack of chemoresistance biomarkers contributes to the poor prognosis. Cancer stem cells (CSC) have been investigated in EOC to understand its relationship with chemoresistance and recurrence. In this context, in vitro cultivation-models are important tools for CSC studies. MicroRNAs (miRNAs) play key roles in cancer, CSC regulation and apoptosis. Thus, this study aims to evaluate the tumorsphere model as CSC-enrichment method in EOC studies and investigate apoptosis-related miRNAs in tumorspheres-derived EOC cell lines...
January 6, 2018: Cancer Microenvironment: Official Journal of the International Cancer Microenvironment Society
https://www.readbyqxmd.com/read/29306324/stromal-cd10-expression-in-breast-cancer-correlates-with-tumor-invasion-and-cancer-stem-cell-phenotype
#4
Tahani Louhichi, Hanene Saad, Myriam Ben Dhiab, Sonia Ziadi, Mounir Trimeche
BACKGROUND: Previous investigations have indicated that CD10 is associated with biological aggressivity in human cancers, but the use of this marker for diagnosis and prognosis is more complex. The aim of this study was to evaluate the expression of CD10 in breast cancer and its association with the clinicopathological features. In addition, we investigated whether a relationship exists between CD10 expression and cancer stem cells. METHODS: CD10 expression was examined by the immunohistochemistry in a series of 133 invasive breast carcinoma cases...
January 6, 2018: BMC Cancer
https://www.readbyqxmd.com/read/29245909/inhibition-of-aldehyde-dehydrogenase-1-enhances-the-cytotoxic-effect-of-retinaldehyde-on-a549-cancer-cells
#5
Jin Won Park, Kyung-Ho Jung, Jin Hee Lee, Seung Hwan Moon, Young Seok Cho, Kyung-Han Lee
We hypothesized that aldehyde dehydrogenase1 (ALDH1) protects cancer cells from retinaldehyde-induced cytotoxicity, and that targeting this enzyme would enhance the therapeutic effect of retinaldehyde. ALDEFLUOR™ assays showed high ALDH activity in A549 and H522 cancer cells and low activity in H1666 and T47D cancer cells. Immunoblots showed that expression of ALDH1A1 and ALDH1A3 was high in A549 and H522 cells, but low in H1666 cells. HPLC confirmed that N, N-diethylaminobenzaldehyde (DEAB) inhibits ALDH-mediated disposal of retinaldehyde in A549 cells and lysates...
November 21, 2017: Oncotarget
https://www.readbyqxmd.com/read/29235528/identification-of-newly-committed-pancreatic-cells-in-the-adult-mouse-pancreas
#6
Mairobys Socorro, Angela Criscimanna, Patricia Riva, Manuj Tandon, Krishna Prasadan, Ping Guo, Abhinav Humar, Sohail Z Husain, Steven D Leach, George K Gittes, Farzad Esni
Multipotent epithelial cells with high Aldehyde dehydrogenase activity have been previously reported to exist in the adult pancreas. However, whether they represent true progenitor cells remains controversial. In this study, we isolated and characterized cells with ALDH activity in the adult mouse or human pancreas during physiological conditions or injury. We found that cells with ALDH activity are abundant in the mouse pancreas during early postnatal growth, pregnancy, and in mouse models of pancreatitis and type 1 diabetes (T1D)...
December 13, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29228728/protein-tyrosine-phosphatase-receptor-type-%C3%AE-acts-as-a-negative-regulator-suppressing-breast-cancer
#7
Xiaotang Yu, Fan Zhang, Jun Mao, Ying Lu, Jiazhi Li, Wei Ma, Shujun Fan, Chunying Zhang, Qing Li, Bo Wang, Bo Song, Lianhong Li
Protein tyrosine phosphatase receptor-type δ (PTPRD) is frequently inactivated in human cancers. This study investigated the role of PTPRD in the regulation of stemness, epithelial-mesenchymal transition (EMT), and migration and invasion in breast cancer cells. In vitro, PTPRD silencing using siRNA enhanced the stem cell-like properties of breast cancer cells, including their mammosphere- and holoclone-forming abilities, and it promoted tumorigenicity in vivo. PTPRD knockdown also increased the CD44+/CD24- breast cancer stem cell (BCSC) population and the expression of the stem cell markers ALDH1 and OCT4...
November 17, 2017: Oncotarget
https://www.readbyqxmd.com/read/29212198/targeting-oral-cancer-stemness-and-chemoresistance-by-isoliquiritigenin-mediated-grp78-regulation
#8
Fang-Wei Hu, Cheng-Chia Yu, Pei-Ling Hsieh, Yi-Wen Liao, Ming-Yi Lu, Pei-Ming Chu
Cancer stem cells (CSCs) are cells that drive tumorigenesis, contributing to metastasis and cancer recurrence as well as resistance to chemotherapy of oral squamous cell carcinomas (OSCC). Therefore, approaches to target CSCs become the subject of intense research for cancer therapy. In this study, we demonstrated that isoliquiritigenin, a chalcone-type flavonoid isolated from licorice root, exhibited more toxicity in oral cancer stem cells (OSCC-CSCs) compared to normal cells. Treatment of isoliquiritigenin not only inhibited the self-renewal ability but also reduced the expression of CSC markers, including the ALDH1 and CD44...
November 7, 2017: Oncotarget
https://www.readbyqxmd.com/read/29207686/molecular-targeting-of-the-aurora-a-smad5-oncogenic-axis-restores-chemosensitivity-in-human-breast-cancer-cells
#9
Mateusz Opyrchal, Malgorzata Gil, Jeffrey L Salisbury, Mathew P Goetz, Vera Suman, Amy Degnim, James McCubrey, Tufia Haddad, Ianko Iankov, Chenye B Kurokawa, Nicole Shumacher, James N Ingle, Evanthia Galanis, Antonino B D'Assoro
Although the majority of breast cancers initially respond to the cytotoxic effects of chemotherapeutic agents, most breast cancer patients experience tumor relapse and ultimately die because of drug resistance. Breast cancer cells undergoing epithelial to mesenchymal transition (EMT) acquire a CD44+/CD24-/ALDH1+ cancer stem cell-like phenotype characterized by an increased capacity for tumor self-renewal, intrinsic drug resistance and high proclivity to develop distant metastases. We uncovered in human breast tumor xenografts a novel non-mitotic role of Aurora-A kinase in promoting breast cancer metastases through activation of EMT and expansion of breast tumor initiating cells (BTICs)...
October 31, 2017: Oncotarget
https://www.readbyqxmd.com/read/29200967/pharmacological-inhibition-of-bmi1-by-ptc-209-impaired-tumor-growth-in-head-neck-squamous-cell-carcinoma
#10
Qiong Wang, Zhongwu Li, Yaping Wu, Rong Huang, Yumin Zhu, Wei Zhang, Yanling Wang, Jie Cheng
Background: Bmi1 (B lymphoma Mo-MLV insertion region 1 homolog) contributes to human tumorigenesis via epigenetic transcriptional silencing and represents a novel therapeutic target with great potentials. Here we sought to determine the therapeutic efficiency of PTC-209, a potent and selective Bmi1 inhibitor, in head neck squamous cell carcinoma (HNSCC) cells and a HNSCC xenograft model. Methods: The mutation pattern, mRNA level of Bmi1 in HNSCC and its associations with clinicopathological parameters were determined through comprehensive data mining and interrogation using publicly available databases GENT, cBioPortal, Oncomine and TCGA...
2017: Cancer Cell International
https://www.readbyqxmd.com/read/29193723/traf6-regulates-tumour-metastasis-through-emt-and-csc-phenotypes-in-head-and-neck-squamous-cell-carcinoma
#11
Lei Chen, Yi-Cun Li, Lei Wu, Guang-Tao Yu, Wen-Feng Zhang, Cong-Fa Huang, Zhi-Jun Sun
Epithelial-mesenchymal transition (EMT) is associated with metastasis formation, generation and maintenance of cancer stem cells (CSCs). However, the regulatory mechanisms of CSCs have not been clarified. This study aims to investigate the role of TNF receptor-associated factor 6 (TRAF6) on EMT and CSC regulation in squamous cell carcinoma of head and neck (SCCHN). We found TRAF6 was overexpressed in human SCCHN tissues, and high TRAF6 expression was associated with lymphatic metastasis and resulted in poor prognosis in patients with SCCHN...
November 29, 2017: Journal of Cellular and Molecular Medicine
https://www.readbyqxmd.com/read/29190952/verrucarin-j-inhibits-ovarian-cancer-and-targets-cancer-stem-cells
#12
Kelsey Carter, Pranela Rameshwar, Mariusz Z Ratajczak, Sham S Kakar
Ovarian Cancer is the fifth leading cause of death among women from cancer. Cancer stem cells are a small population of cells present in cancer and the cause of chemoresistance and recurrence of cancer. We tested a new compound "Verrucarin J (VJ)", a metabolite of the Myrothecium fungus family, and showed that VJ significantly inhibits cell proliferation of both cisplatin-sensitive (A2780 and OVCAR5) and cisplatin-resistant (A2780/CP70) cell lines in a dose- and time-dependent manner with IC50 value of approximately 10 nM after 48 h of treatment...
November 3, 2017: Oncotarget
https://www.readbyqxmd.com/read/29182685/mir205-inhibits-stem-cell-renewal-in-sum159pt-breast-cancer-cells
#13
Víctor Mayoral-Varo, Annarica Calcabrini, María Pilar Sánchez-Bailón, Jorge Martín-Pérez
miR205 has a dual activity, as tumor suppressor and as oncogene. Here we analyzed the impact of miR205 ectopic expression in the initial tumorigenic processes of SUM159PT, a triple negative breast cancer cell line with low endogenous levels of miR205. In SUM159PT, miR205 inhibited expression of its targets VEGFA, ErbB3, Zeb1, Fyn and Lyn A/B; it reduced cell proliferation, and Myc/cyclin D1 levels, while increased p27kip1 expression. miR205 abolished anchorage-independent growth, inhibited migration and invasion, Src-kinases/Stat3 axis activation, and levels of secreted MMP9...
2017: PloS One
https://www.readbyqxmd.com/read/29181106/aldh-enzyme-activity-is-regulated-by-nodal-and-histamine-in-the-a549-cell-line
#14
Yang Jiang, Hui Li, Yi Wang, Tian Tian, Yan He, Yinji Jin, Changsong Han, Xiaoming Jin, Fengmin Zhang, Eiichi Morii
The present study aimed to examine whether the enzyme activity of aldehyde dehydrogenase (ALDH) was regulated by Nodal and histamine in the human alveolar adenocarcinoma A549 cell line. The regulated enzyme activity of ALDH was analyzed by flow cytometry in the A549 cell line. ALDH1 and Nodal expression was investigated by immunohistochemistry in28 cases of lung mixed adenocarcinoma. The enzyme activity of ALDH was upregulated by histamine and agonists of histamine H1 receptor (H1R) and histamine H2 receptor (H2R)...
December 2017: Oncology Letters
https://www.readbyqxmd.com/read/29180203/ceacam1-is-associated-with-recurrence-after-hepatectomy-for-colorectal-liver-metastasis
#15
Shunsuke Yamaguchi, Shozo Yokoyama, Masaki Ueno, Shinya Hayami, Yasuyuki Mitani, Akihiro Takeuchi, John E Shively, Hiroki Yamaue
BACKGROUND: Carcinoembryonic antigen-related cell adhesion molecule 1 (CEACAM1) is re-expressed at the invasion front of colorectal cancer. CEACAM1 expression at metastatic sites remains to be investigated. The current study aims to clarify the association between CEACAM1 expression and recurrence after hepatectomy of colorectal liver metastasis and to address whether CEACAM1 induces tumor-initiating properties needed for growth at metastatic sites. METHODS: Immunohistochemical analyses for CEACAM1 were performed in 67 patients with liver metastasis of colorectal cancer who had undergone curative hepatectomy...
December 2017: Journal of Surgical Research
https://www.readbyqxmd.com/read/29179207/reduction-of-nanog-mediates-the-inhibitory-effect-of-aspirin-on-tumor-growth-and-stemness-in-colorectal-cancer
#16
Hefei Wang, Bing Liu, Jing Wang, Jinglin Li, Ying Gong, Sisi Li, Chunli Wang, Bai Cui, Xiaoyuan Xue, Mengying Yang, Wenjun Fan, Zhijie Kang, Muhammad Kamran, Jie Xu, Pengfei Tian, Yuanyuan Luo, Zhijie Hou, Lin Dong, Yanling Ren, Man Li, Qingping Wen, Wei Cheng, Lingzhi Xu, Ling Wang, Quentin Liu
BACKGROUND/AIMS: Cancer stem cells (CSCs) are considered to be responsible for tumor relapse and metastasis, which serve as a potential therapeutic target for cancer. Aspirin has been shown to reduce cancer risk and mortality, particularly in colorectal cancer. However, the CSCs-suppressing effect of aspirin and its relevant mechanisms in colorectal cancer remain unclear. METHODS: CCK8 assay was employed to detect the cell viability. Sphere formation assay, colony formation assay, and ALDH1 assay were performed to identify the effects of aspirin on CSC properties...
November 27, 2017: Cellular Physiology and Biochemistry
https://www.readbyqxmd.com/read/29167315/a-novel-yap1-inhibitor-targets-cscs-enriched-radiation-resistant-cells-and-exerts-strong-antitumor-activity-in-esophageal-adenocarcinoma
#17
Shumei Song, Min Xie, Ailing W Scott, Jiankang Jin, Lang Ma, Xiaochuan Dong, Heath D Skinner, Randy L Johnson, Sheng Ding, Jaffer A Ajani
Mounting evidence suggests that the Hippo co-activator Yes-associated protein 1 (YAP1) is a major mediator of cancer stem cell (CSC) properties, tumor progression, and therapy resistance as well as often a terminal node of many oncogenic pathways. Thus, targeting YAP1 may be a novel therapeutic strategy for many types of tumors with high YAP1 expression, including esophageal adenocarcinoma (EAC). However, effective YAP1 inhibitors are currently lacking. Here, we identify a small molecule (CA3) that not only has remarkable inhibitory activity on YAP1/Tead transcriptional activity but also demonstrates strong inhibitory effects on EAC cell growth especially on YAP1 high expressing EAC cells both in vitro and in vivo...
November 22, 2017: Molecular Cancer Therapeutics
https://www.readbyqxmd.com/read/29163813/the-novel-zip4-regulation-and-its-role-in-ovarian-cancer
#18
Qipeng Fan, Qingchun Cai, Pengfei Li, Wenyan Wang, Jing Wang, Emily Gerry, Tian-Li Wang, Ie-Ming Shih, Kenneth P Nephew, Yan Xu
Our RNAseq analyses revealed that ZIP4 is a top gene up-regulated in more aggressive ovarian cancer cells. ZIP4's role in cancer stem cells has not been reported in any type of cancer. In addition, the role and regulation of ZIP4, a zinc transporter, have been studied in the context of extracellular zinc transporting. Factors other than zinc with ZIP4 regulatory effects are essentially unknown. ZIP4 expression and its regulation in epithelial ovarian cancer cells was assessed by immunoblotting, quantitative PCR, or immunohistochemistry staining in human ovarian tissues...
October 27, 2017: Oncotarget
https://www.readbyqxmd.com/read/29162703/deformability-of-breast-cancer-cells-in-correlation-with-surface-markers-and-cell-rolling
#19
Amina Mohammadalipour, Monica M Burdick, David F J Tees
Although the cancer stem cell (CSC) hypothesis has been around for many years, the reliability of cell-surface markers to classify CSCs has remained debatable. The finding that cancerous cells are significantly more deformable than healthy ones has provided motivation to consider mechanical properties as a possible biomarker for stemness. In this study, using the micropipette aspiration technique, mechanical properties of multiple breast cancer cell lines were investigated and correlated with breast cancer stem cell (BCSC) marker, CD44(+)/CD24(-)/ALDH1(+) The results indicated that Hs578T and MDA-MB-231 cell lines with CD44(+)/CD24(-)/ALDH1(+) phenotype were significantly more deformable than the MDA-MB-468 cell line, which did not express the BCSC marker...
November 21, 2017: FASEB Journal: Official Publication of the Federation of American Societies for Experimental Biology
https://www.readbyqxmd.com/read/29162480/dual-targeting-immunoliposomes-using-angiopep-2-and-cd133-antibody-for-glioblastoma-stem-cells
#20
Jung Seok Kim, Dae Hwan Shin, Jin-Seok Kim
Glioblastoma stem cells (GSCs), which are identified as subpopulation of CD133(+)/ALDH1(+), are known to show resistance to the most of chemotherapy and radiation therapy, leading to the recurrence of tumor in glioblastoma multiforme (GBM) patients. Also, delivery of temozolomide (TMZ), a mainline treatment of GBM, to the GBM site is hampered by various barriers including the blood-brain barrier (BBB). A dual-targeting immunoliposome encapsulating TMZ (Dual-LP-TMZ) was developed by using angiopep-2 (An2) and anti-CD133 monoclonal antibody (CD133 mAb) for BBB transcytosis and specific delivery to GSCs, respectively...
November 18, 2017: Journal of Controlled Release: Official Journal of the Controlled Release Society
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