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Cell of origin

Fazlur Rahman Talukdar, Massimiliano di Pietro, Maria Secrier, Markus Moehler, Katrin Goepfert, Sheila Soares Coelho Lima, Luis Felipe Ribeiro Pinto, Denver Hendricks, Mohamed Iqbal Parker, Zdenko Herceg
Esophageal cancer (EC) is one of the most lethal cancers and a public health concern worldwide, owing to late diagnosis and lack of efficient treatment. Esophageal squamous cell carcinoma (ESCC) and esophageal adenocarcinoma (EAC) are main histopathological subtypes of EC that show striking differences in geographical distribution, possibly due to differences in exposure to risk factors and lifestyles. ESCC and EAC are distinct diseases in terms of cell of origin, epidemiology, and molecular architecture of tumor cells...
June 19, 2018: Annals of the New York Academy of Sciences
Hirosumi Tamura, Arisa Higa, Hirotaka Hoshi, Gen Hiyama, Nobuhiko Takahashi, Masae Ryufuku, Gaku Morisawa, Yuka Yanagisawa, Emi Ito, Jun-Ichi Imai, Yuu Dobashi, Kiyoaki Katahira, Shu Soeda, Takafumi Watanabe, Keiya Fujimori, Shinya Watanabe, Motoki Takagi
Patient-derived tumor xenograft models represent a promising preclinical cancer model that better replicates disease, compared with traditional cell culture; however, their use is low-throughput and costly. To overcome this limitation, patient-derived tumor organoids (PDOs) were established from human lung, ovarian and uterine tumor tissues, among others, to accurately and efficiently recapitulate the tissue architecture and function. PDOs were able to be cultured for >6 months, and formed cell clusters with similar morphologies to their source tumors...
June 18, 2018: Oncology Reports
Minkyu Kyeong, Jinho Lee, Kwanghee Lee, Sukwon Hong
Recently perovskite solar cells (PSCs) have emerged as an excellent photovoltaic device owing to the outstanding power conversion efficiency (PCE). Nevertheless, device instability remains a critical issue in this field. To overcome device instability without deteriorating PCE, dopant-free hole transporting materials (HTMs) is needed to separate the air-sensitive perovskite layer from extrinsic factors which induce its degradation. Herein we developed novel conjugate polymers of benzo[1,2-b:4,5-b']dithiophene (BDT) and 4,4-difluoro-4-bora-3a,4a-diaza- s-indacene (BODIPY) for use as HTMs without dopants...
June 19, 2018: ACS Applied Materials & Interfaces
B Yun, T Zhang, M A K Azad, J Wang, C J Nowell, P Kalitsis, T Velkov, D F Hudson, J Li
In the original publication of the article, part of Fig. 6 is missing. The missing subpanels, Fig. 6c, d are given below.
June 18, 2018: Archives of Toxicology
Andrew C Tiu, Rashmika Potdar, Djeneba Audrey Djibo, Muhammad Masab, Claudia Dourado
African Americans (AA) have the highest incidence and mortality rates with lung cancer. They are diagnosed at an earlier age with more advanced disease. Programmed cell death protein-1 inhibitor, Nivolumab, was approved as a second-line agent after failure of platinum-based therapy for advanced or metastatic non-small cell lung cancer (NSCLC). The original studies leading to the approval of Nivolumab had insufficient AA patients, thus there is still inadequate knowledge on treatment outcomes among AA patients...
June 18, 2018: Medical Oncology
Morgan Burke, Melissa Hardesty, Wayne Downs
Recurrent clear cell ovarian carcinoma is a difficult to treat condition and early trial data has suggested a possible role for immune checkpoint inhibitors. Nivolumab is an anti-PD-1 immunotherapy that has been used in this setting. While immune related toxicity of these agents has been well described, the occurrence of immune specific neurotoxicity is thought to be rare. We present a case of severe encephalitis while on PD-1 immunotherapy for a recurrent ovarian clear cell cancer and we believe this to be the first such reported case associated with the use of PD-1 inhibitor monotherapy...
May 2018: Gynecologic Oncology Reports
Noortje de Haan, Maarten J D van Tol, Gertjan J Driessen, Manfred Wuhrer, Arjan C Lankester
Immunoglobulin G (IgG) fragment crystallizable (Fc) N -glycosylation has a large influence on the affinity of the antibody for binding to Fcγ-receptors (FcγRs) and C1q protein, thereby influencing immune effector functions. IgG Fc glycosylation is known to be partly regulated by genetics and partly by stimuli in the microenvironment of the B cell. Following allogeneic hematopoietic stem cell transplantation (HSCT), and in the presence of (almost) complete donor chimerism, IgG is expected to be produced by, and glycosylated in, B cells of donor origin...
2018: Frontiers in Immunology
Jie Yu, Jie Zhao, Yuqin Song, Jiachao Zhang, Zhongjie Yu, Heping Zhang, Zhihong Sun
Lactobacillus reuteri is a catalase-negative, Gram-positive, non-motile, obligately heterofermentative bacterial species that has been used as a model to describe the ecology and evolution of vertebrate gut symbionts. However, the genetic features and evolutionary strategies of L. reuteri from the gastrointestinal tract of herbivores remain unknown. Therefore, 16 L. reuteri strains isolated from goat, sheep, cow, and horse in Inner Mongolia, China were sequenced in this study. A comparative genomic approach was used to assess genetic diversity and gain insight into the distinguishing features related to the different hosts based on 21 published genomic sequences...
2018: Frontiers in Microbiology
Mariano J Alvarez, Prem S Subramaniam, Laura H Tang, Adina Grunn, Mahalaxmi Aburi, Gabrielle Rieckhof, Elena V Komissarova, Elizabeth A Hagan, Lisa Bodei, Paul A Clemons, Filemon S Dela Cruz, Deepti Dhall, Daniel Diolaiti, Douglas A Fraker, Afshin Ghavami, Daniel Kaemmerer, Charles Karan, Mark Kidd, Kyoung M Kim, Hee C Kim, Lakshmi P Kunju, Ülo Langel, Zhong Li, Jeeyun Lee, Hai Li, Virginia LiVolsi, Roswitha Pfragner, Allison R Rainey, Ronald B Realubit, Helen Remotti, Jakob Regberg, Robert Roses, Anil Rustgi, Antonia R Sepulveda, Stefano Serra, Chanjuan Shi, Xiaopu Yuan, Massimo Barberis, Roberto Bergamaschi, Arul M Chinnaiyan, Tony Detre, Shereen Ezzat, Andrea Frilling, Merten Hommann, Dirk Jaeger, Michelle K Kim, Beatrice S Knudsen, Andrew L Kung, Emer Leahy, David C Metz, Jeffrey W Milsom, Young S Park, Diane Reidy-Lagunes, Stuart Schreiber, Kay Washington, Bertram Wiedenmann, Irvin Modlin, Andrea Califano
We introduce and validate a new precision oncology framework for the systematic prioritization of drugs targeting mechanistic tumor dependencies in individual patients. Compounds are prioritized on the basis of their ability to invert the concerted activity of master regulator proteins that mechanistically regulate tumor cell state, as assessed from systematic drug perturbation assays. We validated the approach on a cohort of 212 gastroenteropancreatic neuroendocrine tumors (GEP-NETs), a rare malignancy originating in the pancreas and gastrointestinal tract...
June 18, 2018: Nature Genetics
Enrico Ser-Giacomi, Lucie Zinger, Shruti Malviya, Colomban De Vargas, Eric Karsenti, Chris Bowler, Silvia De Monte
Marine plankton populate 70% of Earth's surface, providing the energy that fuels ocean food webs and contributing to global biogeochemical cycles. Plankton communities are extremely diverse and geographically variable, and are overwhelmingly composed of low-abundance species. The role of this rare biosphere and its ecological underpinnings are however still unclear. Here, we analyse the extensive dataset generated by the Tara Oceans expedition for marine microbial eukaryotes (protists) and use an adaptive algorithm to explore how metabarcoding-based abundance distributions vary across plankton communities in the global ocean...
June 18, 2018: Nature Ecology & Evolution
Mengyun Zhang, Yong Dong, Fangxiao Hu, Dan Yang, Qianhao Zhao, Cui Lv, Ying Wang, Chengxiang Xia, Qitong Weng, Xiaofei Liu, Chen Li, Peiqing Zhou, Tongjie Wang, Yuxian Guan, Rongqun Guo, Lijuan Liu, Yang Geng, Hongling Wu, Juan Du, Zheng Hu, Sheng Xu, Jiekai Chen, Aibin He, Bing Liu, Demin Wang, Yong-Guang Yang, Jinyong Wang
In the version of this article initially published, some identification of the supplementary information was incorrect. The items originally called Supplementary Tables 1, 2, 3, 4 and 5 should be Source Data Figures 1, 2, 4, 5 and 7, respectively; those originally called Supplementary Tables 6, 7 and 8 should be Supplementary Tables 1, 2 and 3, respectively; and those originally called Source Data Figures 1, 2, 4, 5 and 7 should be Supplementary Tables 4, 5, 6, 7 and 8, respectively. The errors have been corrected in the HTML version of the article...
June 18, 2018: Nature Immunology
Ann-Sophie Walravens, Maarten Vanhaverbeke, Lara Ottaviani, Hilde Gillijns, Sander Trenson, Nina Vanden Driessche, Aernout Luttun, Bart Meyns, Paul Herijgers, Filip Rega, Ruth Heying, Maurilio Sampaolesi, Stefan Janssens
The loss of endogenous cardiac regenerative capacity within the first week of postnatal life has intensified clinical trials to induce cardiac regeneration in the adult mammalian heart using different progenitor cell types. We hypothesized that donor age-related phenotypic and functional characteristics of cardiac progenitor cells (CPC) account for mixed results of cell-based cardiac repair. We compared expression profiles and cell turnover rates of human heart-derived c-kitpos progenitors (c-kitpos CPC) and cardiosphere-derived cells (CDC) from young and adult donor origin and studied their in vitro angiogenic and cardiac differentiation potential, which can be relevant for cardiac repair...
June 18, 2018: Scientific Reports
Shai Rosenberg, Iva Simeonova, Franck Bielle, Maite Verreault, Bertille Bance, Isabelle Le Roux, Mailys Daniau, Arun Nadaradjane, Vincent Gleize, Sophie Paris, Yannick Marie, Marine Giry, Marc Polivka, Dominique Figarella-Branger, Marie-Hélène Aubriot-Lorton, Chiara Villa, Alexandre Vasiljevic, Emmanuèle Lechapt-Zalcman, Michel Kalamarides, Ariane Sharif, Karima Mokhtari, Stefano Maria Pagnotta, Antonio Iavarone, Anna Lasorella, Emmanuelle Huillard, Marc Sanson
Chordoid glioma (ChG) is a characteristic, slow growing, and well-circumscribed diencephalic tumor, whose mutational landscape is unknown. Here we report the analysis of 16 ChG by whole-exome and RNA-sequencing. We found that 15 ChG harbor the same PRKCA D463H mutation. PRKCA encodes the Protein kinase C (PKC) isozyme alpha (PKCα) and is mutated in a wide range of human cancers. However the hot spot PRKCA D463H mutation was not described in other tumors. PRKCA D463H is strongly associated with the activation of protein translation initiation (EIF2) pathway...
June 18, 2018: Nature Communications
Penghao Li, Zhe Song, Yaxin Yao, Tianhua Huang, Rurong Mao, Jun Huang, Yongyi Ma, Xin Dong, Wenlong Huang, Jihua Huang, Tianjian Chen, Ting Qu, Lingxiao Li, Ying Zhong, Jiang Gu
Preimplantation genetic screening (PGS) detects chromosomal aneuploidy from DNA extracted from trophectodermal biopsy of the embryos before implantation. Although a controlled study showed no difference in pregnancy rates between this invasive cell biopsy technique and a non-biopsied control group, the potential long-term damage by the current PGS method has not be completely ruled out. We therefore tested a less-invasive protocol which utilizes spent culture medium combining with blastocoel fluid (ECB) to assess chromosomal aneuploidy...
June 18, 2018: Scientific Reports
Geoffrey A Watson, Yasar Ahmed, Sarah Picardo, Sonya Chew, Shona Cobbe, Cillian Mahony, James Crotty, Fintan Wallis, Martin J Shelly, Patrick Kiely, Olu Bunmi Ipadeola, Vourneen Healy, Nemer Osman, Rajnish K Gupta
BACKGROUND Neuroendocrine tumors (NETs) encompass a diverse group of varying clinicopathological entities arising from cells of the endocrine and nervous systems. The presentation of these unique tumors can range from occult disease discovered incidentally to hyperactive, metastatic secretory tumors. NETs most commonly originate in the gastrointestinal and respiratory tract, although they may occur at any site in the body due to the wide distribution of neuroendocrine cells. Their classification system is complex and continues to evolve, and the current system uses histological grade in defining these subtypes...
June 19, 2018: American Journal of Case Reports
Dean E Hammond, J Dinesh Kumar, Lorna Raymond, Deborah M Simpson, Robert J Beynon, Graham J Dockray, Andrea Varro
Analysis of secretomes critically underpins the capacity to understand the mechanisms determining interactions between cells and between cells and their environment. In the context of cancer cell micro-environments, the relevant interactions are recognised to be an important determinant of tumor progression. Global proteomic analyses of secretomes are often performed at a single time point and frequently identify both classical secreted proteins (possessing an N-terminal signal sequence), as well as many intracellular proteins, the release of which is of uncertain biological significance...
June 18, 2018: Molecular & Cellular Proteomics: MCP
Raj K Gopal, Sarah E Calvo, Angela R Shih, Frances L Chaves, Declan McGuone, Eran Mick, Kerry A Pierce, Yang Li, Andrea Garofalo, Eliezer M Van Allen, Clary B Clish, Esther Oliva, Vamsi K Mootha
Renal oncocytomas are benign tumors characterized by a marked accumulation of mitochondria. We report a combined exome, transcriptome, and metabolome analysis of these tumors. Joint analysis of the nuclear and mitochondrial (mtDNA) genomes reveals loss-of-function mtDNA mutations occurring at high variant allele fractions, consistent with positive selection, in genes encoding complex I as the most frequent genetic events. A subset of these tumors also exhibits chromosome 1 loss and/or cyclin D1 overexpression, suggesting they follow complex I loss...
June 18, 2018: Proceedings of the National Academy of Sciences of the United States of America
Julien Muffat, Yun Li, Attya Omer, Ann Durbin, Irene Bosch, Grisilda Bakiasi, Edward Richards, Aaron Meyer, Lee Gehrke, Rudolf Jaenisch
Maternal Zika virus (ZIKV) infection during pregnancy is recognized as the cause of an epidemic of microcephaly and other neurological anomalies in human fetuses. It remains unclear how ZIKV accesses the highly vulnerable population of neural progenitors of the fetal central nervous system (CNS), and which cell types of the CNS may be viral reservoirs. In contrast, the related dengue virus (DENV) does not elicit teratogenicity. To model viral interaction with cells of the fetal CNS in vitro, we investigated the tropism of ZIKV and DENV for different induced pluripotent stem cell-derived human cells, with a particular focus on microglia-like cells...
June 18, 2018: Proceedings of the National Academy of Sciences of the United States of America
S Kallel, R Kallel, S Ayadi, A Ghorbel
INTRODUCTION: We report the first case of squamous cell carcinoma (SCC) of the thyroid gland coexisting with papillary thyroid carcinoma (PTC) and Hashimoto's thyroiditis and discuss various theories concerning the histogenesis of SCC of the thyroid gland and the optimal treatment strategy. CASE REPORT: A 54-year-old woman presented with an anterior neck mass measuring 4cm on clinical examination. Imaging showed a suspicious thyroid nodule invading the trachea. Total thyroidectomy with bilateral central lymph node resection was performed...
June 15, 2018: European Annals of Otorhinolaryngology, Head and Neck Diseases
Ryo Miyamoto, Sena Kurita, Hiroyuki Tani, Masato Kobayashi, Soudai Sugiura, Kae Shigihara, Yuka Sato, Yoshikazu Tanaka, Kyoichi Tamura, Makoto Bonkobara
Feline histiocytic sarcoma (HS) is an aggressive and uncommon tumor originating from dendritic cells/macrophages. Here, a feline HS cell line, FHS-1, was established from a case of feline HS and characterized. Immunohistochemically, FHS-1 cells were positive for vimentin and Iba-1, and negative for MHC class II and CD163. FHS-1 cells were positive for α-naphthyl butyrate esterase staining, which was clearly inhibited by sodium fluoride. FHS-1 cells had phagocytic and antigen uptake/processing activities. Moreover, FHS-1 cells were tested for susceptibility to feline infectious peritonitis virus (FIPV) strain 79-1146; however, this cell line was not susceptible to this viral strain...
July 2018: Veterinary Immunology and Immunopathology
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