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https://www.readbyqxmd.com/read/29776450/the-role-of-surgical-margins-in-atypical-lipomatous-tumours-of-the-extremities
#1
Jessica Rauh, Alexander Klein, Andrea Baur-Melnyk, Thomas Knösel, Lars Lindner, Falk Roeder, Volkmar Jansson, Hans Roland Dürr
BACKGROUND: Atypical lipomatous tumours (ALT) are common adipocytic tumours. Due to their large size and deep-seated location, wide resection might result in severe functional deficits. The question which margins should be aimed is hence discussed controversially. METHODS: Forty consecutive patients underwent limb-sparing resections. Margins were defined as R0 (wide resection), R1 (marginal resection) or R2 if tumour was left. All patients were followed for evidence of local recurrence or remote metastases...
May 17, 2018: BMC Musculoskeletal Disorders
https://www.readbyqxmd.com/read/29772614/-a-case-of-retroperitoneal-liposarcoma-in-which-magnetic-resonance-imaging-was-useful-in-the-decision-of-resection-of-primary-and-recurrenttumors
#2
Sohei Kuribayashi, Yasutomo Nakai, Hirotaka Tsuji, Satoru Yumiba, Koji Hatano, Masashi Nakayama, Kenichi Kakimoto, Chiaki Kubo, Kazuo Nishimura
A 47-year-old female was referred to our hospital because of retroperitoneal tumor which was detected by computer tomography (CT). Since the tumor was considered to be benign by magnetic resonance imaging (MRI), she was followed by MRI every 3 months. The site of the tumor was gradually increased, and 15 months after presentation, a lesion with high signal intensity on diffusion weighted image (DWI) appeared in the tumor. At that time, we performed tumor resection considering the tumor to be malignant. Pathological diagnosis was dedifferentiated liposarcoma...
April 2018: Hinyokika Kiyo. Acta Urologica Japonica
https://www.readbyqxmd.com/read/29763619/targeting-the-un-differentiated-state-of-cancer
#3
Lajos V Kemeny, David E Fisher
Dedifferentation in cancer is associated with intrinsic and acquired resistance to therapies. In this issue of Cancer Cell, Tsoi et al. identify four differentiation states in melanoma and provide evidence that melanoma cells develop drug resistance through a stepwise dedifferentiation process, making them vulnerable to ferroptotic cell death-inducing compounds.
May 14, 2018: Cancer Cell
https://www.readbyqxmd.com/read/29760957/simulated-microgravity-induces-a-cellular-regression-of-the-mature-phenotype-in-human-primary-osteoblasts
#4
Magda Gioia, Anna Michaletti, Manuel Scimeca, Mario Marini, Umberto Tarantino, Lello Zolla, Massimo Coletta
Decreased mechanical loading on bones, such as prolonged bed rest and microgravity during space flights, leads to the development of an osteoporotic-like phenotype. Although osteoblast hypo-functionality is reported to be involved in the progression of bone pathological conditions, the cellular mechanisms of this process remain largely unknown. The combined application of mass spectrometry "-omics" and histochemical and ultrastructural approaches have been employed to investigate the effects of the gravitational unloading on human bone-cell biology...
2018: Cell Death Discovery
https://www.readbyqxmd.com/read/29760048/tipifarnib-inhibits-hras-driven-dedifferentiated-thyroid-cancers
#5
Brian R Untch, Vanessa Dos Anjos, Maria E R Garcia-Rendueles, Jeffrey A Knauf, Gnana P Krishnamoorthy, Mahesh Saqcena, Umeshkumar K Bhanot, Nicholas D Socci, Alan L Ho, Ronald Ghossein, James A Fagin
Of the three RAS oncoproteins, only HRAS is delocalized and inactivated by farnesyltransferase inhibitors (FTI), an approach yet to be exploited clinically. In this study, we treat mice bearing Hras-driven poorly differentiated and anaplastic thyroid cancers (Tpo-Cre/HrasG12V/p53flox/flox) with the FTI tipifarnib. Treatment caused sustained tumor regression and increased survival; however, early and late resistance was observed. Adaptive reactivation of RAS-MAPK signaling was abrogated in vitro by selective RTK (i...
May 14, 2018: Cancer Research
https://www.readbyqxmd.com/read/29756093/lineage-plasticity-in-cancer-progression-and-treatment
#6
Clémentine Le Magnen, Michael M Shen, Cory Abate-Shen
Historically, it has been widely presumed that differentiated cells are determined during development and become irreversibly committed to their designated fates. In certain circumstances, however, differentiated cells can display plasticity by changing their identity, either by dedifferentiation to a progenitor-like state or by transdifferentiation to an alternative differentiated cell type. Such cellular plasticity can be triggered by physiological or oncogenic stress, or it can be experimentally induced through cellular reprogramming...
March 2018: Annual Review of Cancer Biology
https://www.readbyqxmd.com/read/29755853/reg3%C3%AE-from-cardiomyocytes-regulated-macrophage-migration-proliferation-and-functional-skewing-in-experimental-autoimmune-myocarditis
#7
Shanshan Zhou, Han Jiang, Han Wang, Hongxiang Lu, Rong Chen, Huaxi Xu, Zhaoliang Su, Xiaoyi Shao
Macrophages play critical roles in inflammatory initiation, development, resolution and cardiac regeneration of myocarditis. However, Reg3β, as a member of regenerating family of proteins, contributes to dedifferentiation of injury cardiomyocytes as well as cardiac function remodeling. It remains unclear whether Reg3β was associated with macrophages reprogramming during autoimmune myocarditis. Our results showed that Reg3β could effectively recruit macrophages, promoted their proliferation and phagocytosis, and facilitated their polarized into M2 macrophages...
2018: American Journal of Clinical and Experimental Immunology
https://www.readbyqxmd.com/read/29754954/the-polycomb-dependent-epigenome-controls-%C3%AE-cell-dysfunction-dedifferentiation-and-diabetes
#8
Tess Tsai-Hsiu Lu, Steffen Heyne, Erez Dror, Eduard Casas, Laura Leonhardt, Thorina Boenke, Chih-Hsiang Yang, Sagar, Laura Arrigoni, Kevin Dalgaard, Raffaele Teperino, Lennart Enders, Madhan Selvaraj, Marius Ruf, Sunil J Raja, Huafeng Xie, Ulrike Boenisch, Stuart H Orkin, Francis C Lynn, Brad G Hoffman, Dominic Grün, Tanya Vavouri, Adelheid M Lempradl, J Andrew Pospisilik
To date, it remains largely unclear to what extent chromatin machinery contributes to the susceptibility and progression of complex diseases. Here, we combine deep epigenome mapping with single-cell transcriptomics to mine for evidence of chromatin dysregulation in type 2 diabetes. We find two chromatin-state signatures that track β cell dysfunction in mice and humans: ectopic activation of bivalent Polycomb-silenced domains and loss of expression at an epigenomically unique class of lineage-defining genes...
May 4, 2018: Cell Metabolism
https://www.readbyqxmd.com/read/29752431/ddb2-represses-ovarian-cancer-cell-dedifferentiation-by-suppressing-aldh1a1
#9
Tiantian Cui, Amit Kumar Srivastava, Chunhua Han, Dayong Wu, Nissar Wani, Lu Liu, Zhiqin Gao, Meihua Qu, Ning Zou, Xiaoli Zhang, Ping Yi, Jianhua Yu, Erica H Bell, Shyh-Ming Yang, David J Maloney, Yanfang Zheng, Altaf A Wani, Qi-En Wang
Cancer stem cells (CSCs), representing the root of many solid tumors including ovarian cancer, have been implicated in disease recurrence, metastasis, and therapeutic resistance. Our previous study has demonstrated that the CSC subpopulation in ovarian cancer can be limited by DNA damage-binding protein 2 (DDB2). Here, we demonstrated that the ovarian CSC subpopulation can be maintained via cancer cell dedifferentiation, and DDB2 is able to suppress this non-CSC-to-CSC conversion by repression of ALDH1A1 transcription...
May 11, 2018: Cell Death & Disease
https://www.readbyqxmd.com/read/29751502/the-development-of-compartmentation-of-camp-signaling-in-cardiomyocytes-the-role-of-t-tubules-and-caveolae-microdomains
#10
REVIEW
Navneet K Bhogal, Alveera Hasan, Julia Gorelik
3′-5′-cyclic adenosine monophosphate (cAMP) is a signaling messenger produced in response to the stimulation of cellular receptors, and has a myriad of functional applications depending on the cell type. In the heart, cAMP is responsible for regulating the contraction rate and force; however, cAMP is also involved in multiple other functions. Compartmentation of cAMP production may explain the specificity of signaling following a stimulus. In particular, transverse tubules (T-tubules) and caveolae have been found to be critical structural components for the spatial confinement of cAMP in cardiomyocytes, as exemplified by beta-adrenergic receptor (β-ARs) signaling...
May 3, 2018: Journal of Cardiovascular Development and Disease
https://www.readbyqxmd.com/read/29750813/autophagy-mediates-tumor-necrosis-factor-%C3%AE-induced-phenotype-switching-in-vascular-smooth-muscle-a7r5-cell-line
#11
Marina García-Miguel, Jaime A Riquelme, Ignacio Norambuena-Soto, Pablo E Morales, Fernanda Sanhueza-Olivares, Constanza Nuñez-Soto, David Mondaca-Ruff, Nicole Cancino-Arenas, Alejandra San Martín, Mario Chiong
Vascular smooth muscle cells (VSMC) dedifferentiation from a contractile to a synthetic phenotype contributes to atherosclerosis. Atherosclerotic tissue has a chronic inflammatory component with high levels of tumor necrosis factor-α (TNF-α). VSMC of atheromatous plaques have increased autophagy, a mechanism responsible for protein and intracellular organelle degradation. The aim of this study was to evaluate whether TNF-α induces phenotype switching of VSMCs and whether this effect depends on autophagy...
2018: PloS One
https://www.readbyqxmd.com/read/29750003/dedifferentiated-retroperitoneal-liposarcoma-spontaneously-occurring-in-an-aged-sd-rat
#12
Tomoharu Naito, Tsuyoshi Saito, Tamami Higuchi, Akira Inomata, Takuo Hayashi, Yasuhiro Shimada, Atsuko Yamauchi-Ohguchi, Sayaka Kenmochi, Chihaya Kakinuma, Takashi Yao
Liposarcoma is a rare neoplasm in rats and is characterized by the presence of lipoblasts containing multiple cytoplasmic vacuoles. We encountered a rare type of liposarcoma in a male SD (Crj:CD(SD)IGS) rat during a long-term study to gather background data. At necropsy at 105 weeks of age, there was a large amount of fatty tissue covering the mesentery, pancreas, and retroperitoneum; a white nodule in the right kidney; and paleness of the liver. Microscopically, the tumor had a well-differentiated component and dedifferentiated high-grade component...
April 2018: Journal of Toxicologic Pathology
https://www.readbyqxmd.com/read/29746306/source-and-microenvironmental-regulation-of-erythropoietin-in-the-kidney
#13
Karen A Nolan, Roland H Wenger
PURPOSE OF REVIEW: Historically, the identity of O2-sensing renal erythropoietin (Epo)-producing (REP) cells was a matter of debate. This review summarizes how recent breakthroughs in transgenic mouse and in-situ hybridization techniques have facilitated sensitive and specific detection of REP cells and accelerated advancements in the understanding of the regulation of renal Epo production in health and disease. RECENT FINDINGS: REP cells are a dynamically regulated unique subpopulation of tubulointerstitial cells with features of fibroblasts, pericytes and neurons...
May 8, 2018: Current Opinion in Nephrology and Hypertension
https://www.readbyqxmd.com/read/29744727/immunohistochemical-biomarkers-in-thyroid-pathology
#14
REVIEW
Zubair Baloch, Ozgur Mete, Sylvia L Asa
The application of immunohistochemistry to the diagnosis of thyroid lesions has increased as new biomarkers have emerged. In this review, we discuss the biomarkers that are critical for accurate diagnosis, prognosis, and management. Immunohistochemical markers are used to confirm that an unusual tumor in the thyroid is indeed of thyroid origin, either of follicular epithelial or C-cell differentiation; the various mimics include nonthyroidal lesions such as parathyroid tumors, paragangliomas, thymic neoplasms, and metastatic malignancies...
May 9, 2018: Endocrine Pathology
https://www.readbyqxmd.com/read/29740489/dedifferentiated-liposarcoma-of-the-oral-floor-a-case-study-and-literature-review-of-50-cases-of-head-and-neck-neoplasm
#15
Fumikazu Nimura, Toshiyuki Nakasone, Hirofumi Matsumoto, Tessho Maruyama, Akira Matayoshi, Nobuyuki Maruyama, Naoki Yoshimi, Akira Arasaki, Kazuhide Nishihara
Dedifferentiated liposarcoma (DDLS) has a relatively poor prognosis, however this neoplasm rarely occurs in the head and neck. To date, no definite protocol has been established for the diagnosis and treatment of head and neck DDLS. The present study reports the case of a 69-year-old male patient with DDLS of the oral floor. To the best of our knowledge, this is the first documented case of oral floor DDLS. In addition, this is the first reported case with the development of a second primary malignancy following the treatment of head and neck DDLS...
May 2018: Oncology Letters
https://www.readbyqxmd.com/read/29740279/activation-of-neuregulin-1-erbb-signaling-is-involved-in-the-development-of-tocp-induced-delayed-neuropathy
#16
Hai-Yang Xu, Pan Wang, Ying-Jian Sun, Ming-Yuan Xu, Li Zhu, Yi-Jun Wu
Organophosphate-induced delayed neuropathy (OPIDN) is characterized by progressive axonal degeneration and demyelination of the spinal cord and sciatic nerves. The neuregulin 1/epidermal growth factor receptor (ErbB) signaling pathway is crucial for axonal myelination. In this study, we investigated whether the neuregulin 1/ErbB signaling pathway mediated the progression of OPIDN. Adult hens were given tri- o -cresyl phosphate (TOCP), a typical neuropathic organophosphorus compound, to induce OPIDN. The ErbB inhibitor lapatinib was administered to hens 4 h prior to and 4 days after TOCP exposure...
2018: Frontiers in Molecular Neuroscience
https://www.readbyqxmd.com/read/29731991/targeted-next-generation-sequencing-of-well-differentiated-dedifferentiated-liposarcoma-reveals-novel-gene-amplifications-and-mutations
#17
Neeta Somaiah, Hannah C Beird, Andrea Barbo, Juhee Song, Kenna R Mills Shaw, Wei-Lien Wang, Karina Eterovic, Ken Chen, Alexander Lazar, Anthony P Conley, Vinod Ravi, Patrick Hwu, Andrew Futreal, George Simon, Funda Meric-Bernstam, David Hong
Well-differentiated/dedifferentiated liposarcoma is a common soft tissue sarcoma with approximately 1500 new cases per year. Surgery is the mainstay of treatment but recurrences are frequent and systemic options are limited. 'Tumor genotyping' is becoming more common in clinical practice as it offers the hope of personalized targeted therapy. We wanted to evaluate the results and the clinical utility of available next-generation sequencing panels in WD/DD liposarcoma. Patients who had their tumor sequenced by either FoundationOne ( n = 13) or the institutional T200/T200...
April 13, 2018: Oncotarget
https://www.readbyqxmd.com/read/29721169/differentiation-inducing-therapeutic-effect-of-notch-inhibition-in-reversing-malignant-transformation-of-liver-normal-stem-cells-via-met
#18
Hao Luo, Wei-Hui Liu, Hong-Yin Liang, Hong-Tao Yan, Ning Lin, Dong-Yu Li, Tao Wang, Li-Jun Tang
Background: Liver cancer stem cells (LCSCs) are the key factors for cancer metastasis, recurrent, and drug resistance. LCSCs are originated from either hepatocytes dedifferentiation or differentiation arresting of liver normal stem cells (LNSCs). Differentiation-inducing therapy is a novel strategy in solid tumors. Furthermore, Notch signaling pathway has been proved to play important role in the process of hepatocytes differentiation. In previous study, a malignant transformation cellular model of LNSCs has been built up, and in this study we are trying to illustrate whether inhibition of Notch can reverse this malignant tendency and drive these malignant cells back to differentiate into mature hepatocytes...
April 10, 2018: Oncotarget
https://www.readbyqxmd.com/read/29721073/ovol2-links-stemness-and-metastasis-via-fine-tuning-epithelial-mesenchymal-transition-in-nasopharyngeal-carcinoma
#19
Xue-Kang Qi, Hui-Qiong Han, Hao-Jiong Zhang, Miao Xu, Lili Li, Lin Chen, Tong Xiang, Qi-Sheng Feng, Tiebang Kang, Chao-Nan Qian, Mu-Yan Cai, Qian Tao, Yi-Xin Zeng, Lin Feng
Rationale: Metastasis is the leading cause of disease-related death among patients with nasopharyngeal carcinoma (NPC). Mounting evidence suggest that epithelial-mesenchymal transition (EMT) is crucial for cancer cells to acquire metastatic ability. In this study, we aim to clarify the extent to which EMT is involved in various cancer properties and identify novel markers for predicting the prognosis of NPC patients. Methods: Two cellular models derived from the same NPC cell line with distinct metastasis ability were used for microarray analysis to identify key transcriptional factors that drive metastasis...
2018: Theranostics
https://www.readbyqxmd.com/read/29719936/induced-ptf1a-expression-in-pancreatic-ductal-adenocarcinoma-cellsactivates-acinar-gene-networks-reduces-tumorigenic-properties-and-sensitizes-cells-to-gemcitabine-treatment
#20
Brad L Jakubison, Patrick G Schweickert, Sarah E Moser, Yi Yang, Hongyu Gao, Kathleen Scully, Pamela Itkin-Ansari, Yunlong Liu, Stephen F Konieczny
Pancreatic acinar cells synthesize, package, and secrete digestive enzymes into the duodenum to aid in nutrient absorption and meet metabolic demands. When exposed to cellular stresses and insults acinar cells undergo a dedifferentiation process termed acinar-ductal metaplasia (ADM). ADM lesions with oncogenic mutations eventually give rise to pancreatic ductal adenocarcinoma (PDAC). In healthy pancreata, the basic helix-loop-helix (bHLH) factors MIST1 and PTF1a coordinate an acinar-specific transcription network that maintains the highly developed differentiation status of the cells, protecting the pancreas from undergoing a transformative process...
May 2, 2018: Molecular Oncology
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