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https://www.readbyqxmd.com/read/28820907/positive-regulatory-interactions-between-yap-and-hedgehog-signalling-in-skin-homeostasis-and-bcc-development-in-mouse-skin-in-vivo
#1
Bassem Akladios, Veronica Mendoza Reinoso, Jason E Cain, Taopeng Wang, Duncan L Lambie, D Neil Watkins, Annemiek Beverdam
Skin is a highly plastic tissue that undergoes tissue turnover throughout life, but also in response to injury. YAP and Hedgehog signalling play a central role in the control of epidermal stem/progenitor cells in the skin during embryonic development, in postnatal tissue homeostasis and in skin carcinogenesis. However, the genetic contexts in which they act to control tissue homeostasis remain mostly unresolved. We provide compelling evidence that epidermal YAP and Hedgehog/GLI2 signalling undergo positive regulatory interactions in the control of normal epidermal homeostasis and in basal cell carcinoma (BCC) development, which in the large majority of cases is caused by aberrant Hedgehog signalling activity...
2017: PloS One
https://www.readbyqxmd.com/read/28816699/ceruminous-adenoid-cystic-carcinoma-of-external-auditory-canal
#2
Andrew E Ebelhar, Dava S West, Rony K Aouad
An adenoid cystic carcinoma (AdCC) of the ceruminous glands is very rare; its diagnosis is most often challenging, and simple biopsies may be misleading. Our paper describes a case of a circumferential mass of the left ear canal that was initially reported as a basal cell carcinoma on biopsies in the clinic and on frozen sections intraoperatively. The final pathology was an AdCC of the ceruminous glands of the external auditory canal. Our case reflects the difficulty in the diagnosis of an AdCC of the ceruminous gland and the importance of keeping broad differential diagnoses in mind when counseling patients with masses in the ear canals until final pathology is obtained...
August 2017: Journal of International Advanced Otology
https://www.readbyqxmd.com/read/28814301/incidence-of-cancer-among-licenced-commercial-pilots-flying-north-atlantic-routes
#3
Eva Maria Gudmundsdottir, Jon Hrafnkelsson, Vilhjalmur Rafnsson
BACKGROUND: To evaluate cancer incidence among licenced commercial pilots in association with cosmic radiation. METHODS: Cohort study where ionizing radiation dose of cosmic radiation was estimated from airline data and software program and cancer incidence was obtained by record linkage with nation-wide cancer registry. All licenced commercial male airline pilots were followed from 1955 to 2015, ever or never employed at airline with international routes. Standardized incidence ratios were calculated and relative risk by Poisson regression, to examine exposure-response relation...
August 16, 2017: Environmental Health: a Global Access Science Source
https://www.readbyqxmd.com/read/28808307/lc3a-silencing-hinders-aggresome-vimentin-cage-clearance-in-primary-choroid-plexus-carcinoma
#4
Marwa Nassar, Heba Samaha, Myret Ghabriel, Maha Yehia, Hala Taha, Sherin Salem, Khaled Shaaban, Mariam Omar, Nabil Ahmed, Shahenda El-Naggar
Aggresomes are transient microtubule-dependent inclusion bodies that sequester misfolded proteins and are ultimately removed by autophagy. Here we report the generation of a choroid plexus carcinoma cell line; Children's Cancer Hospital Egypt (CCHE)-45, which is characterized by the constitutive formation of aggresomes. When examining the autophagy pathway as the main route for aggresomes clearance, CCHE-45 cells displayed increased autophagy flux mediated by MAP1LC3B. MAP1LC3A-Variant1 gene expression was silenced by promoter methylation...
August 14, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28808216/modeling-and-validating-three-dimensional-human-normal-cervix-and-cervical-cancer-tissues-in-vitro
#5
Anna Karolina Zuk, Xuesong Wen, Stephen Dilworth, Dong Li, Lucy Ghali
The use of three dimensional in vitro systems in cancer research is a promising path for developing effective anticancer therapies. The aim of this study was to engineer a functional 3-Din vitro model of normal and cancerous cervical tissue.Normal epithelial and immortalized cervical epithelial carcinoma cell lines were used to construct 3-D artificial normal cervical and cervical cancerous tissues. De-epidermised dermis (DED) was used as a scaffold for both models. Morphological analyses were conducted by using hematoxylin and eosin staining and characteristics of the models were studied by analyzing the expression of different structural cytokeratins and differential protein marker Mad1 using immunohistochemical technique...
January 19, 2017: Journal of Biomedical Research
https://www.readbyqxmd.com/read/28807594/thyroid-hormone-receptor-beta-agonist-gc-1-inhibits-met-%C3%AE-catenin-driven-hepatocellular-cancer
#6
Elisabetta Puliga, Qian Min, Junyan Tao, Rong Zhang, Tirthadipa Pradhan-Sundd, Minakshi Poddar, Sucha Singh, Amedeo Columbano, Jinming Yu, Satdarshan P Monga
The thyromimetic agent GC-1 induces hepatocyte proliferation via Wnt/β-catenin signaling and may promoting regeneration in both acute and chronic liver insufficiencies. However, β-catenin activation particularly due to mutations in CTNNB1 is seen in a subset of hepatocellular carcinomas (HCC). Thus, it will be critical to address any effect of GC-1 on HCC growth and development, before its use can be advocated to stimulate regeneration in chronic liver diseases. In the current study, we first examine the effect of GC-1 on β-catenin-TCF4 activity in HCC cell lines harboring wild-type or mutated-CTNNB1...
August 11, 2017: American Journal of Pathology
https://www.readbyqxmd.com/read/28802488/characterization-of-surgical-procedures-in-the-spanish-mohs-surgery-registry-regesmohs-for-2013-2015
#7
E de Eusebio Murillo, A Martín Fuentes, V Ruiz-Salas, J R Garcés, R Miñano Medrano, J L López-Estebaranz, T Alonso-Alonso, M Á Rodríguez-Prieto, Y Delgado Jiménez, V Morales, P Redondo Bellón, E Manubens-Mercadé, O Sanmartín-Jiménez, C Guillén Barona, R Cabeza, N Cano, A Toll-Abelló, R Navarro Tejedor, J L Artola Igarza, I Allende Markixana, A Alfaro Rubio, C Ciudad Blanco, H Vázquez-Veiga, L Barchino Ortiz, M A Descalzo, I García-Doval
INTRODUCTION: The Spanish Mohs Surgery Registry is used to collect data on the use and outcomes of Mohs micrographic surgery (MMS) in Spain. The aim of this study was to describe perioperative and intraoperative data recorded for MMS procedures performed between July 2013 (when the registry started) and January 2016. MATERIAL AND METHODS: Prospective cohort study of data from 18 hospitals. The data collected included type of anesthesia, surgical technique, hospital admission, number of Mohs stages, management of preoperative risk factors, additional treatments, previous treatments, type of tumor, operating time, and complications...
August 9, 2017: Actas Dermo-sifiliográficas
https://www.readbyqxmd.com/read/28801308/egfr-mutations-compromise-hypoxia-associated-radiation-resistance-through-impaired-replication-fork-associated-dna-damage-repair
#8
Mohammad Saki, Haruhiko Makino, Prashanthi Javvadi, Nozomi Tomimatsu, Lianghao Ding, Jennifer E Clark, Elaine Gavin, Kenichi Takeda, Joel Andrews, Debabrata Saha, Michael D Story, Sandeep Burma, Chaitanya Nirodi
Epidermal growth factor receptor (EGFR) signaling has been implicated in hypoxia-associated resistance to radiation or chemotherapy. Non-small cell lung carcinomas (NSCLC) with activating L858R or ΔE746-E750 EGFR mutations exhibit elevated EGFR activity and downstream signaling. Here, relative to wild type (WT) EGFR, mutant (MT) EGFR expression significantly increases radiosensitivity in hypoxic cells. Gene expression profiling in human bronchial epithelial cells (HBEC) revealed that MT-EGFR expression elevated transcripts related to cell cycle and replication in aerobic and hypoxic conditions and down-regulated RAD50, a critical component of non-homologous end-joining (NHEJ) and homologous recombination (HR) DNA repair pathways...
August 11, 2017: Molecular Cancer Research: MCR
https://www.readbyqxmd.com/read/28800010/cell-polarity-reversal-distinguishes-true-micropapillary-growth-from-retraction-artifact-in-invasive-urothelial-carcinoma
#9
Yiang Hui, Kara A Lombardo, M Ruhul Quddus, Andres Matoso
Focal micropapillary features in invasive urothelial carcinoma is sometimes difficult to distinguish from retraction artifact morphologically. Cell polarity reversal has been demonstrated in micropapillary tumors by epithelial membrane antigen (EMA) immunostaining. We have previously described the use of E-cadherin as a cell polarity marker in ovarian micropapillary serous borderline tumors. The aim of this study was to evaluate the utility of immunohistochemistry for EMA and E-cadherin in differentiating micropapillary urothelial carcinoma from retraction artifact...
August 9, 2017: Applied Immunohistochemistry & Molecular Morphology: AIMM
https://www.readbyqxmd.com/read/28799948/anticancer-drugs-and-the-regulation-of-hedgehog-genes-gli1-and-ptch1-a-comparative-study-in-nonmelanoma-skin-cancer-cell-lines
#10
Uffe H Olesen, Sophie Bojesen, Julie Gehl, Merete Haedersdal
Nonmelanoma skin cancer is the most common cancer in humans, comprising mainly basal cell carcinoma (BCC) and squamous cell carcinoma (SCC). BCC proliferation is highly dependent on the Hedgehog signaling pathway. We aimed to investigate a panel of anticancer drugs with known activity against skin cancer for their therapeutic potential in localized, enhanced topical treatment of SCC and BCC. Cytotoxicity profiles for vismodegib, 5-fluorouracil (5-FU), methotrexate (MTX), cisplatin, bleomycin, and vorinostat were established in terms of half maximal inhibitory concentration values in a panel of immortalized keratinocytes (HaCaT), BCC (UWBCC1 and BCC77015), and SCC (A431 and SCC25) cell lines...
August 9, 2017: Anti-cancer Drugs
https://www.readbyqxmd.com/read/28799019/endometriosis-and-the-risk-of-skin-cancer-a-prospective-cohort-study
#11
Leslie V Farland, Simon Lorrain, Stacey A Missmer, Laureen Dartois, Iris Cervenka, Isabelle Savoye, Sylvie Mesrine, Marie-Christine Boutron-Ruault, Marina Kvaskoff
PURPOSE: Endometriosis has been associated with an increased risk of skin melanoma. However, associations with other skin cancer types and how they compare with melanoma are unclear. Our objective was to prospectively investigate the relationships between endometriosis and risk of non-melanoma and melanoma skin cancers. METHODS: E3N is a prospective cohort of 98,995 French women aged 40-65 years in 1990. Data on surgically confirmed endometriosis and skin cancer diagnoses were collected every 2-3 years through self-report, with skin cancer cases confirmed through pathology reports...
August 10, 2017: Cancer Causes & Control: CCC
https://www.readbyqxmd.com/read/28797452/outcome-following-radiotherapy-for-head-and-neck-basal-cell-carcinoma-with-aggressive-features
#12
Anupam Rishi, Shao Hui Huang, Brian O'Sullivan, David P Goldstein, Lin Lu, Jolie Ringash, John Waldron, Woody Wells, Alex Sun, Andrew Hope, Peter Chung, Meredith Giuliani, Anna Spreafico, Li Tong, Wei Xu, Andrew Bayley
OBJECTIVES: The literature demonstrates that 'aggressive' head-and-neck basal cell carcinomas (HN-BCC) have a higher than expected relapse rate with unfavorable outcomes. We report outcomes following definitive (dRT) or post-operative radiotherapy (PORT) for these tumors. METHODS: We reviewed all HN-BCC patients with 'aggressive' features (primary lesions diameter >10mm, >2 recurrences, or extra-cutaneous extension), treated with megavoltage dRT or PORT between 1998 and 2013...
September 2017: Oral Oncology
https://www.readbyqxmd.com/read/28796927/epithelial-to-mesenchymal-transition-contributes-to-invasion-in-squamous-cell-carcinomas-originated-from-actinic-keratosis-through-the-differentiated-pathway-whereas-proliferation-plays-a-more-significant-role-in-the-classical-pathway
#13
X Saenz-Sardà, C Carrato, L Pérez-Roca, L Puig, C Ferrándiz, A Ariza, M T Fernández-Figueras
BACKGROUND: Every actinic keratosis (AK) starts with atypia at the basal layers of the epidermis (AK I). Progression into invasive squamous cell carcinoma (iSCC) may occur following two main pathways, classical and differentiated. In the former, iSCC only occurs after involvement of the upper epidermal layers by atypical cells (AK III), while in the latter iSCC develops directly from AK I. In the anogenital mucosa, these two pathways are associated with differential expression of p53 and p16...
August 10, 2017: Journal of the European Academy of Dermatology and Venereology: JEADV
https://www.readbyqxmd.com/read/28796899/plag1-immunohistochemistry-is-a-sensitive-marker-for-pleomorphic-adenoma-a-comparative-study-with-plag1-genetic-abnormalities
#14
Nora Katabi, Bin Xu, Achim A Jungbluth, Lei Zhang, Sung Yun Shao, Jason Lane, Ronald Ghossein, Cristina R Antonescu
AIMS: PLAG1 gene rearrangement is the most common genetic abnormality in pleomorphic adenoma (PA), resulting in overexpression of PLAG1 protein. PA and carcinoma ex pleomorphic adenoma (CA ex-PA) can mimic various benign and malignant salivary gland tumors. The aims of this study are to evaluate the sensitivity and specificity of PLAG1 immunohistochemistry (IHC) in the differential diagnosis of PA and CA ex-PA and to compare the PLAG1 immunohistochemical results to PLAG1 gene abnormalities as detected by fluorescence in situ hybridization (FISH)...
August 10, 2017: Histopathology
https://www.readbyqxmd.com/read/28794006/identification-of-the-sox2-interactome-by-bioid-reveals-ep300-as-a-mediator-of-sox2-dependent-squamous-differentiation-and-lung-squamous-cell-carcinoma-growth
#15
Bo Ram Kim, Etienne Coyaud, Estelle Laurent, Jonathan St-Germain, Emily Van de Laar, Ming Sound Tsao, Brian Raught, Nadeem Moghal
Lung cancer is the leading cause of cancer mortality worldwide, with squamous cell carcinoma (SQCC) being the second most common form. SQCCs are thought to originate in bronchial basal cells through an injury response to smoking, which results in this stem cell population committing to hyperplastic squamous rather than mucinous and ciliated fates. Copy number gains in SOX2 in the region of 3q26-28 occur in 94% of SQCCs, and appear to act both early and late in disease progression by stabilizing the initial squamous injury response in stem cells and promoting growth of invasive carcinoma...
August 9, 2017: Molecular & Cellular Proteomics: MCP
https://www.readbyqxmd.com/read/28793140/topical-sinecatechins-10-ointment-for-superficial-basal-cell-carcinoma-a-randomized-clinical-trial
#16
Janneke Kessels, Lotte Voeten, Patty Nelemans, Jack Cleutjens, Lisa Maria Hillen, Klara Mosterd, Nicole W J Kelleners-Smeets
No abstract text is available yet for this article.
August 9, 2017: JAMA Dermatology
https://www.readbyqxmd.com/read/28790030/notch-shapes-the-innate-immunophenotype-in-breast-cancer
#17
Qiang Shen, Brenda Cohen, Weiyue Zheng, Ramtin Rahbar, Bernard Martin, Kiichi Murakami, Sara Lamorte, Patrycja Thompson, Hal Berman, Juan Carlos Zúñiga-Pflücker, Pamela S Ohashi, Michael Reedijk
Notch activation, which is associated with basal-like breast cancer (BLBC), normally directs tissue patterning, suggesting that it may shape the tumor microenvironment (TME). Here we show that Notch in tumor cells regulates the expression of two powerful pro-inflammatory cytokines, IL1β and CCL2, and the recruitment of tumor-associated macrophages (TAMs). Notch also regulates TGFβ-mediated activation of tumor cells by TAMs, closing a Notch-dependent paracrine signaling loop between these two cell types. We use a novel mouse model in which Notch can be regulated in spontaneous mammary carcinoma to confirm that IL1β and CCL2 production, and macrophage recruitment are Notch-dependent...
August 8, 2017: Cancer Discovery
https://www.readbyqxmd.com/read/28789929/commentary-on-comprehensive-transcriptional-analysis-of-early-stage-urothelial-carcinoma-hedegaard-j-lamy-p-nordentoft-i-algaba-f-h%C3%A3-yer-s-ulh%C3%A3-i-bp-vang-s-reinert-t-hermann-gg-mogensen-k-thomsen-mb-nielsen-mm-marquez-m-segersten-u-aine-m-h%C3%A3-glund-m-birkenkamp
#18
Byron H Lee
Non-muscle-invasive bladder cancer (NMIBC) is a heterogeneous disease with widely different outcomes. We performed a comprehensive transcriptional analysis of 460 early-stage urothelial carcinomas and showed that NMIBC can be subgrouped into 3 major classes with basal- and luminal-like characteristics and different clinical outcomes. Large differences in biological processes such as the cell cycle, epithelial-mesenchymal transition, and differentiation were observed. Analysis of transcript variants revealed frequent mutations in genes encoding proteins involved in chromatin organization and cytoskeletal functions...
August 5, 2017: Urologic Oncology
https://www.readbyqxmd.com/read/28780365/risk-of-cutaneous-squamous-cell-carcinoma-after-treatment-of-basal-cell-carcinoma-with-vismodegib
#19
Tina Bhutani, Michael Abrouk, Camelia S Sima, Natalia Sadetsky, Jeannie Hou, Ivor Caro, Mary-Margaret Chren, Sarah T Arron
BACKGROUND: Vismodegib is a first-in-class agent targeting the hedgehog signaling pathway for treatment of patients with locally advanced basal cell carcinoma (BCC) and metastatic BCC. There have been concerns about the development of squamous cell carcinoma (SCC) in patients treated with this drug. OBJECTIVE: We sought to determine whether treatment with vismodegib is associated with an increase in the risk of cutaneous SCC. METHODS: In this retrospective cohort study, patients treated with vismodegib as part of phase I and II clinical studies were compared with participants from the University of California, San Francisco, Nonmelanoma Skin Cancer Cohort who received standard therapy for primary BCC...
August 2, 2017: Journal of the American Academy of Dermatology
https://www.readbyqxmd.com/read/28780363/effect-of-voriconazole-on-risk-of-nonmelanoma-skin-cancer-after-hematopoietic-cell-transplantation
#20
Lawrence F Kuklinski, Shufeng Li, Margaret R Karagas, Wen-Kai Weng, Bernice Y Kwong
BACKGROUND: Voriconazole has previously been associated with increased risk for cutaneous squamous cell carcinoma (SCC) in solid organ transplant recipients. Less is known about the risk in patients after hematopoietic cell transplantation (HCT). OBJECTIVE: We evaluated the effect of voriconazole on the risk for nonmelanoma skin cancer (NMSC), including SCC and basal cell carcionoma, among those who have undergone allogeneic and autologous HCT. METHODS: In all, 1220 individuals who had undergone allogeneic HCT and 1418 who had undergone autologous HCT were included in a retrospective cohort study...
August 2, 2017: Journal of the American Academy of Dermatology
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