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Robert Fred Henry Walter, Claudia Vollbrecht, Robert Werner, Thomas Mairinger, Jan Schmeller, Elena Flom, Jeremias Wohlschlaeger, Nikolaos Barbetakis, Dimitrios Paliouras, Fotios Chatzinikolaou, Vasilis Adamidis, Kosmas Tsakiridis, Paul Zarogoulidis, Georgia Trakada, Daniel Christian Christoph, Kurt Werner Schmid, Fabian Dominik Mairinger
BACKGROUND: Malignant pleural mesothelioma (MPM) is a rare, predominantly asbestos-related and biologically highly aggressive tumour leading to a dismal prognosis. Multimodality therapy consisting of platinum-based chemotherapy is the treatment of choice. The reasons for the rather poor efficacy of platinum compounds remain largely unknown. MATERIAL AND METHODS: For this exploratory mRNA study, 24 FFPE tumour specimens were screened by digital gene expression analysis...
2016: Journal of Cancer
Edward A Ratovitski
Dehydroleucodine (DhL), a natural sesquiterpene lactone from Artemisia douglassiana Besser (Argentine) and Gynoxys verrucosa (Ecuador) was shown to induce a cell death in cancer cells through senescence, apoptosis, and DNA damage. Here, we found that the DhL exposure upregulated the total and phosphorylated (p-Y99) levels of TP73 in human glioblastoma U87-MG cells. We further found that TP73 silencing led to a partial rescue of U87-MG cells from the cell death induced by DhL. Upon the DhL exposure numerous gene targets were upregulated and downregulated through a TP73-dependent transcriptional mechanism...
September 23, 2016: Anti-cancer Agents in Medicinal Chemistry
Phaik Ju Teoh, Chonglei Bi, Chirackal Sintosebastian, Liang Seah Tay, Rafael Fonseca, Wee Joo Chng
Despite therapeutic advancement, multiple myeloma (MM) remains incurable with drug resistance being one of the main challenges in the clinic. Myeloma cells possess high protein secretory load, leading to increased intracellular endoplasmic reticulum (ER) stress. Hence, they are vulnerable to further perturbation to its protein homeostasis. In studying the therapeutic mechanism of PRIMA-1 (mutant-p53-reactivating-agent), we uncovered its novel p53-independent-mechanism that can be exploited for myeloma. Despite its inability in restoring the wild type-p53 protein conformation and transcriptional function in the mutant-p53-human-myeloma-cells, PRIMA-1 was efficacious against myeloma cells with differential p53 genotypes...
September 20, 2016: Oncotarget
M Chmelařová, I Sirák, M Mžik, K Sieglová, H Vošmiková, P Dundr, K Němejcová, J Michálek, M Vošmik, V Palička, J Laco
Epigenetic changes are considered to be a frequent event during tumour development. Hypermethylation of promoter CpG islands represents an alternative mechanism for inactivation of tumour suppressor genes, DNA repair genes, cell cycle regulators and transcription factors. The aim of this study was to investigate promoter methylation of specific genes in samples of sinonasal carcinoma by comparison with normal sinonasal tissue. To search for epigenetic events we used methylation-specific multiplex ligation-dependent probe amplification (MS-MLPA) to compare the methylation status of 64 tissue samples of sinonasal carcinomas with 19 control samples...
2016: Folia Biologica (Praha)
Maria C Marin, Margarita M Marques
Information regarding the role of p73 in the regulation of angiogenesis has been incomplete and quite controversial. Remarkably, several groups, including ours, have recently demonstrated that TP73 plays a fundamental role in angiogenesis regulation and that differential expression of TP73 could have important consequences in tumor angiogenesis. Here, we discuss a possible model for p73 function in the regulation of developmental angiogenesis and tumor angiogenesis.
January 2016: Molecular & Cellular Oncology
Alice Nemajerova, Daniela Kramer, Saul S Siller, Christian Herr, Orr Shomroni, Tonatiuh Pena, Cristina Gallinas Suazo, Katharina Glaser, Merit Wildung, Henrik Steffen, Anusha Sriraman, Fabian Oberle, Magdalena Wienken, Magali Hennion, Ramon Vidal, Bettina Royen, Mihai Alevra, Detlev Schild, Robert Bals, Jürgen Dönitz, Dietmar Riedel, Stefan Bonn, Ken-Ichi Takemaru, Ute M Moll, Muriel Lizé
Motile multiciliated cells (MCCs) have critical roles in respiratory health and disease and are essential for cleaning inhaled pollutants and pathogens from airways. Despite their significance for human disease, the transcriptional control that governs multiciliogenesis remains poorly understood. Here we identify TP73, a p53 homolog, as governing the program for airway multiciliogenesis. Mice with TP73 deficiency suffer from chronic respiratory tract infections due to profound defects in ciliogenesis and complete loss of mucociliary clearance...
June 1, 2016: Genes & Development
Chunbo Wang, Huan Nie, Yiqun Li, Guiyou Liu, Xu Wang, Shijie Xing, Liping Zhang, Xin Chen, Yue Chen, Yu Li
To analyze the relation between SNPs in DNA repair pathway-related genes and sensitivity of tumor radio-chemotherapy, 26 SNPs in 20 DNA repair genes were genotyped on 176 patients of NSCLC undertaking radio-chemotherapy treatment. In squamous cell carcinoma (SCC), as the rs2228000, rs2228001 (XPC), rs2273953 (TP73), rs2279744 (MDM2), rs2299939 (PTEN) and rs8178085, rs12334811 (DNA-PKcs) affected the sensitivity to chemotherapy, so did the rs8178085, rs12334811 to radiotherapy. Moreover rs344781, rs2273953 and rs12334811 were related with the survival time of SCC...
2016: Scientific Reports
H Si, H Lu, X Yang, A Mattox, M Jang, Y Bian, E Sano, H Viadiu, B Yan, C Yau, S Ng, S K Lee, R-A Romano, S Davis, R L Walker, W Xiao, H Sun, L Wei, S Sinha, C C Benz, J M Stuart, P S Meltzer, C Van Waes, Z Chen
The Cancer Genome Atlas (TCGA) network study of 12 cancer types (PanCancer 12) revealed frequent mutation of TP53, and amplification and expression of related TP63 isoform ΔNp63 in squamous cancers. Further, aberrant expression of inflammatory genes and TP53/p63/p73 targets were detected in the PanCancer 12 project, reminiscent of gene programs comodulated by cREL/ΔNp63/TAp73 transcription factors we uncovered in head and neck squamous cell carcinomas (HNSCCs). However, how inflammatory gene signatures and cREL/p63/p73 targets are comodulated genome wide is unclear...
November 3, 2016: Oncogene
Francesco Paolo Fiorentino, Elvan Tokgün, Sònia Solé-Sánchez, Sabrina Giampaolo, Onur Tokgün, Toni Jauset, Takashi Kohno, Manuel Perucho, Laura Soucek, Jun Yokota
Small cell lung cancer (SCLC) is the most aggressive type of lung cancer with high mortality. One of the MYC family genes, MYC, MYCL or MYCN, is amplified in ~20% of the SCLCs; therefore, MYC proteins are potential therapeutic targets in SCLC patients. We investigated the therapeutic impact of Omomyc, a MYC dominant negative, in a panel of SCLC cell lines. Strikingly, Omomyc suppressed the growth of all tested cell lines by inducing cell cycle arrest and/or apoptosis. Induction of G1 arrest by Omomyc was found to be dependent on the activation of CDKN1A, in part, through the TP73 pathway...
May 24, 2016: Oncotarget
Luciana C Silva, Juliana Ferreira-Strixino, Letícia C Fontana, António M d'A Rocha Gonsalves, Arménio C Serra, Marta Pineiro, Renata A Canevari
BACKGROUND: Molecular investigation of breast tumors has permitted better understanding about interaction of genes and pathways involved in tumor progression. OBJECTIVE: The aim of this study was to evaluate the association between genes belonging to the pathway of apoptosis with tumor response to photodynamic therapy. STUDY DESIGN/MATERIALS AND METHODS: The mammary tumors were induced in twenty-four Spraguey-Dawley female rats by oral gavage of 7,12-dimethylbenz(a)anthracene (8mg/Kg body weight)...
June 2016: Photodiagnosis and Photodynamic Therapy
Shi-Liang Gui, Li-Chen Teng, Shu-Qiu Wang, Shuang Liu, Ying-Li Lin, Xiao-Lian Zhao, Lei Liu, Hong-Yu Sui, Yang Yang, Li-Chun Liang, Mo-Lin Wang, Xin-Yi Li, Yu Cao, Feng-Ying Li, Wei-Qun Wang
PURPOSE: CXCL3 and its receptor CXCR2 were considered to play particularly important roles in the progression of malignancies. However, the investigations about CXCL3/CXCR2 axis in prostate cancer have been poorly involved. Herein we firstly reported our studies on the expression and biological roles of CXCL3 and CXCR2 in prostate cancer. METHODS: Expression levels of CXCL3 and CXCR2 in prostate cancer cell lines (PC-3, DU145 and LNCaP), immortalized prostate stromal cell line (WPMY-1) and immortalized prostate epithelial cell line (RWPE-1) were investigated by RT-PCR, ELISA and western blot, whereas expression levels of CXCL3 in a prostate tissue microarray were detected by immunohistochemistry...
May 2016: International Urology and Nephrology
Wenqiao Zang, Tao Wang, Yuanyuan Wang, Xiaonan Chen, Yuwen Du, Qianqian Sun, Min Li, Ziming Dong, Guoqiang Zhao
Recent studies have shown that long non-coding RNAs (lncRNAs) are involved in a variety of biological processes and diseases in humans, including cancer. Our study serves as the first comprehensive analysis of lncRNA TP73-AS1 in esophageal cancer. We utilized a lncRNA microarray to analyze the expression profile of lncRNAs in esophageal squamous cell carcinoma. Our results show that lncRNA TP73-AS1 and BDH2 levels are generally upregulated in esophageal cancer tissues and are strongly correlated with tumor location or TNM stage in clinical samples...
April 12, 2016: Oncotarget
Cynthia R Coffill, Alison P Lee, Jia Wei Siau, Sharon M Chee, Thomas L Joseph, Yaw Sing Tan, Arumugam Madhumalar, Boon-Hui Tay, Sydney Brenner, Chandra S Verma, Farid J Ghadessy, Byrappa Venkatesh, David P Lane
The extant jawless vertebrates, represented by lampreys and hagfish, are the oldest group of vertebrates and provide an interesting genomic evolutionary pivot point between invertebrates and jawed vertebrates. Through genome analysis of one of these jawless vertebrates, the Japanese lamprey (Lethenteron japonicum), we identified all three members of the important p53 transcription factor family--Tp53, Tp63, and Tp73--as well as the Mdm2 and Mdm4 genes. These genes and their products are significant cellular regulators in human cancer, and further examination of their roles in this most distant vertebrate relative sheds light on their origin and coevolution...
February 1, 2016: Genes & Development
Keiji Shinozuka, Hongwei Tang, Roy B Jones, Donghui Li, Yago Nieto
The goal of this study was to determine whether single nucleotide polymorphisms (SNPs) in genes involved in gemcitabine metabolism, DNA damage repair, multidrug resistance, and alkylator detoxification influence the clinical outcome of patients with refractory/relapsed lymphoid malignancies receiving high-dose gemcitabine/busulfan/melphalan (Gem/Bu/Mel) with autologous stem cell support. We evaluated 21 germline SNPs of the gemcitabine metabolism genes CDA, deoxycytidine kinase, and hCNT3; DNA damage repair genes RECQL, X-ray repair complementing 1, RAD54L, ATM, ATR, MLH1, MSH2, MSH3, TREX1, EXO1, and TP73; and multidrug-resistance genes MRP2 and MRP5; as well as glutathione-S-transferase GSTP1 in 153 patients with relapsed or refractory lymphoma or myeloma receiving Gem/Bu/Mel...
May 2016: Biology of Blood and Marrow Transplantation
Katie T Huang, Thomas Mikeska, Jason Li, Elena A Takano, Ewan K A Millar, Peter H Graham, Samantha E Boyle, Ian G Campbell, Terence P Speed, Alexander Dobrovic, Stephen B Fox
BACKGROUND: Patients with breast cancer have an increased risk of developing subsequent breast cancers. It is important to distinguish whether these tumours are de novo or recurrences of the primary tumour in order to guide the appropriate therapy. Our aim was to investigate the use of DNA methylation profiling and array comparative genomic hybridization (aCGH) to determine whether the second tumour is clonally related to the first tumour. METHODS: Methylation-sensitive high-resolution melting was used to screen promoter methylation in a panel of 13 genes reported as methylated in breast cancer (RASSF1A, TWIST1, APC, WIF1, MGMT, MAL, CDH13, RARβ, BRCA1, CDH1, CDKN2A, TP73, and GSTP1) in 29 tumour pairs (16 ipsilateral and 13 contralateral)...
2015: BMC Cancer
Keisuke Kataoka, Yasunobu Nagata, Akira Kitanaka, Yuichi Shiraishi, Teppei Shimamura, Jun-Ichirou Yasunaga, Yasushi Totoki, Kenichi Chiba, Aiko Sato-Otsubo, Genta Nagae, Ryohei Ishii, Satsuki Muto, Shinichi Kotani, Yosaku Watatani, June Takeda, Masashi Sanada, Hiroko Tanaka, Hiromichi Suzuki, Yusuke Sato, Yusuke Shiozawa, Tetsuichi Yoshizato, Kenichi Yoshida, Hideki Makishima, Masako Iwanaga, Guangyong Ma, Kisato Nosaka, Masakatsu Hishizawa, Hidehiro Itonaga, Yoshitaka Imaizumi, Wataru Munakata, Hideaki Ogasawara, Toshitaka Sato, Ken Sasai, Kenzo Muramoto, Marina Penova, Takahisa Kawaguchi, Hiromi Nakamura, Natsuko Hama, Kotaro Shide, Yoko Kubuki, Tomonori Hidaka, Takuro Kameda, Tsuyoshi Nakamaki, Ken Ishiyama, Shuichi Miyawaki, Sung-Soo Yoon, Kensei Tobinai, Yasushi Miyazaki, Akifumi Takaori-Kondo, Fumihiko Matsuda, Kengo Takeuchi, Osamu Nureki, Hiroyuki Aburatani, Toshiki Watanabe, Tatsuhiro Shibata, Masao Matsuoka, Satoru Miyano, Kazuya Shimoda, Seishi Ogawa
Adult T cell leukemia/lymphoma (ATL) is a peripheral T cell neoplasm of largely unknown genetic basis, associated with human T cell leukemia virus type-1 (HTLV-1) infection. Here we describe an integrated molecular study in which we performed whole-genome, exome, transcriptome and targeted resequencing, as well as array-based copy number and methylation analyses, in a total of 426 ATL cases. The identified alterations overlap significantly with the HTLV-1 Tax interactome and are highly enriched for T cell receptor-NF-κB signaling, T cell trafficking and other T cell-related pathways as well as immunosurveillance...
November 2015: Nature Genetics
Kwan Yeung Wong, Zhenhai Li, Xiaoqin Zhang, Gilberto Ka Kit Leung, Godfrey Chi-Fung Chan, Chor Sang Chim
In multiple myeloma, a long non-coding RNA, KIAA0495 (alias PDAM/TP73-AS1), had been found progressively downregulated from normal plasma cell to benign monoclonal gammopathy of undetermined significance to symptomatic myeloma. Herein, by methylation-specific PCR, the putative KIAA0495 promoter was found unmethylated in all healthy controls (N = 14) but methylated in 50 % of myeloma cell lines (N = 10). KIAA0495 methylation was shown inversely correlated with KIAA0495 expression. However, KIAA0495 methylation was detected in none of both primary myeloma samples at diagnosis (N = 61) and at relapse/progression (N = 16)...
2015: Molecular Cancer
Cathy B Moelans, Eva J Vlug, Cigdem Ercan, Peter Bult, Horst Buerger, Gabor Cserni, Paul J van Diest, Patrick W B Derksen
BACKGROUND: Pleomorphic invasive lobular cancer (pleomorphic ILC) is a rare variant of ILC that is characterized by a classic ILC-like growth pattern combined with an infiltrative ductal cancer (IDC)-like high nuclear atypicality. There is an ongoing discussion whether pleomorphic ILC is a dedifferentiated form of ILC or in origin an IDC with a secondary loss of cohesion. Since gene promoter hypermethylation is an early event in breast carcinogenesis and thus may provide information on tumor progression, we set out to compare the methylation patterns of pleomorphic ILC, classic ILC and IDC...
October 2015: Cellular Oncology (Dordrecht)
Shanzhou Duan, Ying Tsai, Peter Keng, Yongbing Chen, Soo Ok Lee, Yuhchyau Chen
Cisplatin-based chemotherapy is currently the most effective treatment regimen for non-small cell lung cancer (NSCLC), but eventually tumor resistance develops which limits its success. The potential implication of IL-6 signaling in the cisplatin resistance of NSCLC was explored by testing whether NSCLC cells with different levels of intracellular IL-6 show different responses to the cytotoxic treatment of cisplatin. When the cisplatin cytotoxicity of the IL-6 knocked down human NSCLC cells (A549IL-6si and H157IL-6si) were compared with their corresponding scramble control cells (A549sc and H157sc), higher cisplatin cytotoxicity was found in IL-6 si cells than sc cells...
September 29, 2015: Oncotarget
Natalia Bailon-Moscoso, Gabriela González-Arévalo, Gabriela Velásquez-Rojas, Omar Malagon, Giovanni Vidari, Alejandro Zentella-Dehesa, Edward A Ratovitski, Patricia Ostrosky-Wegman
Accumulating evidence supports the idea that secondary metabolites obtained from medicinal plants (phytometabolites) may be important contributors in the development of new chemotherapeutic agents to reduce the occurrence or recurrence of cancer. Our study focused on Dehydroleucodine (DhL), a sesquiterpene found in the provinces of Loja and Zamora-Chinchipe. In this study, we showed that DhL displayed cytostatic and cytotoxic activities on the human cerebral astrocytoma D384 cell line. With lactone isolated from Gynoxys verrucosa Wedd, a medicinal plant from Ecuador, we found that DhL induced cell death in D384 cells by triggering cell cycle arrest and inducing apoptosis and DNA damage...
2015: PloS One
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