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https://www.readbyqxmd.com/read/29163814/multivalent-cationic-pseudopeptide-polyplexes-as-a-tool-for-cancer-therapy
#1
Zoi Diamantopoulou, Maud-Emmanuelle Gilles, Maha Sader, Mélissande Cossutta, Benoit Vallée, Claire Houppe, Damien Habert, Blandine Brissault, Eric Leroy, Federica Maione, Enrico Giraudo, Damien Destouches, Jacques Penelle, José Courty, Ilaria Cascone
In this study, a novel anticancer reagent based on polyplexes nanoparticles was developed. These nanoparticles are obtained by mixing negatively charged polyelectrolytes with the antitumour cationically-charged pseudopeptide N6L. Using two in vivo experimental tumor pancreatic models based upon PANC-1 and mPDAC cells, we found that the antitumour activity of N6L is significantly raised via its incorporation in polyplexed nanoparticles. Study of the mechanism of action using affinity isolation and si-RNA experiments indicated that N6L-polyplexes are internalized through their interaction with nucleolin...
October 27, 2017: Oncotarget
https://www.readbyqxmd.com/read/29161242/cadherin-1-and-cadherin-3-cooperation-determines-the-aggressiveness-of-pancreatic-ductal-adenocarcinoma
#2
Carole Siret, Aurélie Dobric, Anna Martirosyan, Chloé Terciolo, Sébastien Germain, Renaté Bonier, Thassadite Dirami, Nelson Dusetti, Richard Tomasini, Marion Rubis, Stéphane Garcia, Juan Iovanna, Dominique Lombardo, Véronique Rigot, Frédéric André
BACKGROUND: Pancreatic ductal adenocarcinoma (PDAC) is characterised by an extensive tissue invasion and an early formation of metastasis. Alterations in the expression of cadherins have been reported in PDAC. Yet, how these changes contribute to tumour progression is poorly understood. Here, we investigated the relationship between cadherins expression and PDAC development. METHODS: Cadherins expression was assessed by immunostaining in both human and murine tissue specimens...
November 21, 2017: British Journal of Cancer
https://www.readbyqxmd.com/read/29161241/determination-of-an-optimal-response-cut-off-able-to-predict-progression-free-survival-in-patients-with-well-differentiated-advanced-pancreatic-neuroendocrine-tumours-treated-with-sunitinib-an-alternative-to-the-current-recist-defined-response
#3
Angela Lamarca, Jorge Barriuso, Matthew Kulke, Ivan Borbath, Heinz-Josef Lenz, Jean Luc Raoul, Neal J Meropol, Catherine Lombard-Bohas, James Posey, Sandrine Faivre, Eric Raymond, Juan W Valle
BACKGROUND: Sunitinib prolongs progression-free survival (PFS) in patients with advanced pancreatic neuroendocrine tumours (pNET). Response Evaluation Criteria in Solid Tumors (RECIST)-defined partial responses (PR; classically defined as ⩾30% size decrease from baseline) are infrequent. METHODS: Individual data of pNET patients from the phase II [NCT00056693] and pivotal phase III [NCT00428597] trials of sunitinib were analysed in this investigator-initiated, post hoc study...
November 21, 2017: British Journal of Cancer
https://www.readbyqxmd.com/read/29158237/resection-of-pancreatic-cancer-in-europe-and-usa-an-international-large-scale-study-highlighting-large-variations
#4
Lei Huang, Lina Jansen, Yesilda Balavarca, Esther Molina-Montes, Masoud Babaei, Lydia van der Geest, Valery Lemmens, Liesbet Van Eycken, Harlinde De Schutter, Tom B Johannesen, Claus W Fristrup, Michael B Mortensen, Maja Primic-Žakelj, Vesna Zadnik, Nikolaus Becker, Thilo Hackert, Margit Mägi, Tiziana Cassetti, Romano Sassatelli, Robert Grützmann, Susanne Merkel, Ana F Gonçalves, Maria J Bento, Péter Hegyi, Gábor Lakatos, Andrea Szentesi, Michel Moreau, Tony van de Velde, Annegien Broeks, Milena Sant, Pamela Minicozzi, Vincenzo Mazzaferro, Francisco X Real, Alfredo Carrato, Xavier Molero, Marc G Besselink, Núria Malats, Markus W Büchler, Petra Schrotz-King, Hermann Brenner
OBJECTIVE: Resection can potentially cure resectable pancreatic cancer (PaC) and significantly prolong survival in some patients. This large-scale international study aimed to investigate variations in resection for PaC in Europe and USA and determinants for its utilisation. DESIGN: Data from six European population-based cancer registries and the US Surveillance, Epidemiology, and End Results Program database during 2003-2016 were analysed. Age-standardised resection rates for overall and stage I-II PaCs were computed...
November 20, 2017: Gut
https://www.readbyqxmd.com/read/29158145/intratumoural-leukocyte-infiltration-is-a-prognostic-indicator-among-pancreatic-cancer-patients-with-type-2-diabetes
#5
Emelie Karnevi, Agata Sasor, Katarzyna Said Hilmersson, Daniel Ansari, Jonas S Erjefält, Ann H Rosendahl, Roland Andersson
BACKGROUND: The life expectancy of pancreatic cancer patients remains minimal. The disease progression may be influenced by type 2 diabetes (T2D) and inflammatory status, although important gaps persist around their joint effects on disease outcome. The aim of this study was to investigate the clinical significance of the tumour immune microenvironment on pancreatic cancer prognosis in relation to T2D status. METHOD: Tumour-infiltrating macrophages, neutrophils and eosinophils were studied in primary pancreatic tumours and paired lymph node metastases in relation to patient and tumour characteristics, T2D status and overall survival in a retrospective cohort of patients with resectable pancreatic cancer in Sweden...
November 11, 2017: Pancreatology: Official Journal of the International Association of Pancreatology (IAP) ... [et Al.]
https://www.readbyqxmd.com/read/29152076/profiling-tumour-heterogeneity-through-circulating-tumour-dna-in-patients-with-pancreatic-cancer
#6
Patricia Adamo, Caroline M Cowley, Christopher P Neal, Vilas Mistry, Karen Page, Ashley R Dennison, John Isherwood, Robert Hastings, JinLi Luo, David A Moore, Pringle J Howard, Martins L Miguel, Catrin Pritchard, Margaret Manson, Jacqui A Shaw
The majority of pancreatic ductal adenocarcinomas (PDAC) are diagnosed late so that surgery is rarely curative. Earlier detection could significantly increase the likelihood of successful treatment and improve survival. The aim of the study was to provide proof of principle that point mutations in key cancer genes can be identified by sequencing circulating free DNA (cfDNA) and that this could be used to detect early PDACs and potentially, premalignant lesions, to help target early effective treatment. Targeted next generation sequencing (tNGS) analysis of mutation hotspots in 50 cancer genes was conducted in 26 patients with PDAC, 14 patients with chronic pancreatitis (CP) and 12 healthy controls with KRAS status validated by digital droplet PCR...
October 20, 2017: Oncotarget
https://www.readbyqxmd.com/read/29150545/tumour-diameter-is-not-reliable-for-management-of-non-secreting-pancreatic-neuroendocrine-tumours
#7
Logan Mills, Panagiotis Drymousis, Yogesh Vashist, Christoph Burdelski, Andreas Prachalias, Parthi Srinivasan, Krishna Menon, Corina Cotoi, Saboor Khan, Judith Cave, Thomas Armstrong, Martin O Weickert, Jakob Izbicki, Joerg Schrader, Andreja Frilling, John K Ramage, Raj Srirajaskanthan
Small non-functioning pancreatic NETs (pNETs) ≤2 cm can pose a management dilemma in terms of surveillance or resection. There is evidence to suggest that a surveillance approach can be considered since there are no significant radiological changes observed in lesions during long-term follow-up. However, other studies have suggested loco-regional spread can be present in ≤2 cm pNETs. The aim of this study was to characterise the prevalence of malignant features and identify any useful predictive variables in a surgically resected cohort of pNETs...
November 2017: Endocrine Connections
https://www.readbyqxmd.com/read/29149107/treponema-denticola-chymotrypsin-like-proteinase-may-contribute-to-orodigestive-carcinogenesis-through-immunomodulation
#8
Mikko T Nieminen, Dyah Listyarifah, Jaana Hagström, Caj Haglund, Daniel Grenier, Dan Nordström, Veli-Jukka Uitto, Marcela Hernandez, Tülay Yucel-Lindberg, Taina Tervahartiala, Mari Ainola, Timo Sorsa
BACKGROUND: Periodontal pathogens have been linked to oral and gastrointestinal (orodigestive) carcinogenesis. However, the exact mechanisms remain unknown. Treponema denticola (Td) is associated with severe periodontitis, a chronic inflammatory disease leading to tooth loss. The anaerobic spirochete Td is an invasive bacteria due to its major virulence factor chymotrypsin-like proteinase. Here we aimed to investigate the presence of Td chymotrypsin-like proteinase (Td-CTLP) in major orodigestive tumours and to elucidate potential mechanisms for Td to contribute to carcinogenesis...
November 16, 2017: British Journal of Cancer
https://www.readbyqxmd.com/read/29139481/pancreatic-cancer-tailored-therapy-for-pancreatic-tumour-subtype
#9
Iain Dickson
No abstract text is available yet for this article.
November 15, 2017: Nature Reviews. Gastroenterology & Hepatology
https://www.readbyqxmd.com/read/29137302/functional-and-non-functional-pancreatic-neuroendocrine-tumours-enets-or-ajcc-tnm-staging-system
#10
Min Yang, Neng-Wen Ke, Yi Zhang, Chun-Lu Tan, Bo-Le Tian, Xu-Bao Liu, Wei Huang, Quentin Nunes, Robert Sutton
Background: There are currently 2 Tumour-Node-Metastasis (TNM) staging systems for pancreatic neuroendocrine tumours (p-NETs) - European Neuroendocrine Tumour Society (ENETS) and American Joint Committee on Cancer (AJCC). P-NETs being heterogeneous, we investigated the prognostic value of the 2 systems in p-NETs, as a whole, and more interestingly in functional and non-functional sub-groups separately, with a view to ascertaining any potential clinical benefits of using one system over the other...
October 10, 2017: Oncotarget
https://www.readbyqxmd.com/read/29134352/accuracy-of-apparent-diffusion-coefficient-in-differentiating-pancreatic-neuroendocrine-tumour-from-intrapancreatic-accessory-spleen
#11
Ankur Pandey, Pallavi Pandey, Mounes Aliyari Ghasabeh, Farnaz Najmi Varzaneh, Pegah Khoshpouri, Nannan Shao, Manijeh Zargham Pour, Daniel Fadaei Fouladi, Ralph H Hruban, Anne Marie O'Broin-Lennon, Ihab R Kamel
OBJECTIVES: To evaluate and compare the accuracy of absolute apparent diffusion coefficient (ADC) and normalised ADC (lesion-to-spleen ADC ratio) in differentiating pancreatic neuroendocrine tumour (NET) from intrapancreatic accessory spleen (IPAS). METHODS: Study included 62 patients with the diagnosis of pancreatic NET (n=51) or IPAS (n=11). Two independent reviewers measured ADC on all lesions and spleen. Receiver operating characteristics (ROC) analysis to differentiate NET from IPAS was performed and compared for absolute and normalised ADC...
November 13, 2017: European Radiology
https://www.readbyqxmd.com/read/29132801/robotic-stereotactic-treatment-for-malignant-metastasis-of-solid-tumour-in-the-pancreas-a-multiple-case-report-and-review-of-literature
#12
M Loi, A Magallon-Baro, C Papalazarou, M Milder, J J Nuyttens
Metastatic involvement of the pancreas occurs in 5% of patients affected by advanced malignancies. Surgical resection has been reported by number of authors as a valuable option to improve disease control, in particular in patients with limited disease burden and favourable histotypes; however, the benefit of this procedure has been questioned due to patient selection, technical challenges and relevant risk of perioperative mortality and severe complications. In the present study, a cohort of surgically unfit patients affected by a solitary metastasis in the pancreas from various primary tumours received stereotactic radiotherapy with an ablative dose schedule, obtaining promising local and distant disease progression-free delay with minor toxicity...
November 10, 2017: Cancer Radiothérapie: Journal de la Société Française de Radiothérapie Oncologique
https://www.readbyqxmd.com/read/29132146/identification-of-unique-neoantigen-qualities-in-long-term-survivors-of-pancreatic-cancer
#13
Vinod P Balachandran, Marta Łuksza, Julia N Zhao, Vladimir Makarov, John Alec Moral, Romain Remark, Brian Herbst, Gokce Askan, Umesh Bhanot, Yasin Senbabaoglu, Daniel K Wells, Charles Ian Ormsby Cary, Olivera Grbovic-Huezo, Marc Attiyeh, Benjamin Medina, Jennifer Zhang, Jennifer Loo, Joseph Saglimbeni, Mohsen Abu-Akeel, Roberta Zappasodi, Nadeem Riaz, Martin Smoragiewicz, Z Larkin Kelley, Olca Basturk, Mithat Gönen, Arnold J Levine, Peter J Allen, Douglas T Fearon, Miriam Merad, Sacha Gnjatic, Christine A Iacobuzio-Donahue, Jedd D Wolchok, Ronald P DeMatteo, Timothy A Chan, Benjamin D Greenbaum, Taha Merghoub, Steven D Leach
Pancreatic ductal adenocarcinoma is a lethal cancer with fewer than 7% of patients surviving past 5 years. T-cell immunity has been linked to the exceptional outcome of the few long-term survivors, yet the relevant antigens remain unknown. Here we use genetic, immunohistochemical and transcriptional immunoprofiling, computational biophysics, and functional assays to identify T-cell antigens in long-term survivors of pancreatic cancer. Using whole-exome sequencing and in silico neoantigen prediction, we found that tumours with both the highest neoantigen number and the most abundant CD8(+) T-cell infiltrates, but neither alone, stratified patients with the longest survival...
November 8, 2017: Nature
https://www.readbyqxmd.com/read/29126671/treatment-challenges-in-and-outside-a-specialist-network-setting-pancreatic-neuroendocrine-tumours
#14
Panagis M Lykoudis, Stefano Partelli, Francesca Muffatti, Martyn Caplin, Massimo Falconi, Giuseppe K Fusai
Pancreatic Neuroendocrine Neoplasms comprise a group of rare tumours with special biology, an often indolent behaviour and particular diagnostic and therapeutic requirements. The specialized biochemical tests and radiological investigations, the complexity of surgical options and the variety of medical treatments that require individual tailoring, mandate a multidisciplinary approach that can be optimally achieved through an organized network. The present study describes currents concepts in the management of these tumours as well as an insight into the challenges of delivering the pathway in and outside a Network...
October 16, 2017: European Journal of Surgical Oncology
https://www.readbyqxmd.com/read/29124493/genotype-phenotype-correlation-in-asian-indian-von-hippel-lindau-vhl-syndrome-patients-with-pheochromocytoma-paraganglioma
#15
Nilesh Lomte, Sanjeet Kumar, Vijaya Sarathi, Reshma Pandit, Manjunath Goroshi, Swati Jadhav, Anurag R Lila, Tushar Bandgar, Nalini S Shah
The data in genotype-phenotype correlation in Indian von Hippel-Lindau (VHL) patients is limited. We have retrospectively studied 31 genetically proven VHL patients with pheochromocytoma/paraganglioma (PCC/PGL) from families and have reviewed the World literature on PCC/PGL in patients with large VHL deletions. Three patients had large deletions and 28 patients had other mutations [missense mutations in 25, 3 bp deletion in 2 and single bp duplication in one]. Unilateral PCC were significantly more common in patients with large VHL deletions whereas multiple PCC (bilateral PCC or PCC + sympathetic PGL) were significantly more common in those with other mutations...
November 9, 2017: Familial Cancer
https://www.readbyqxmd.com/read/29119617/computer-aided-design-of-human-sialyltransferase-inhibitors-of-hst8sia-iii
#16
Christopher Dobie, Andrew P Montgomery, Rémi Szabo, Danielle Skropeta, Haibo Yu
Sialyltransferase (ST) upregulation and the resultant hypersialylation of tumour cell surfaces is an established hallmark of many cancers including lung, breast, ovarian, pancreatic and prostate cancer. The role of ST enzymes in tumour cell growth and metastasis, as well as links to multi-drug resistance, has seen ST inhibition emerge as a target for potential antimetastatic cancer treatments. The most potent of these reported inhibitors are transition-state analogues. Although there are several examples of these in the literature, many have suspected poor pharmacokinetic properties and are not readily synthetically accessible...
November 9, 2017: Journal of Molecular Recognition: JMR
https://www.readbyqxmd.com/read/29115428/inhibition-of-p21-activated-kinase-enhances-tumour-immune-response-and-sensitizes-pancreatic-cancer-to-gemcitabine
#17
Kai Wang, Nhi Huynh, Xiao Wang, Graham Baldwin, Mehrdad Nikfarjam, Hong He
Pancreatic ductal adenocarcinoma (PDA) is one of the major types of cancer that exhibit high mortality worldwide because of the late diagnosis and the lack of effective treatment. Immunotherapy appears to be ineffective in PDA treatment due to the existence of a unique immune-suppressive microenvironment in PDA. Gemcitabine-based therapy is still the most commonly used chemotherapy to treat PDA patients with only marginal increased survival rates. This prompted us to continue the search for more effective therapy for PDA treatment...
November 7, 2017: International Journal of Oncology
https://www.readbyqxmd.com/read/29113292/nod-mice-susceptible-to-pancreatic-autoimmunity-demonstrate-delayed-growth-of-pancreatic-cancer
#18
James Dooley, Emanuela Pasciuto, Vasiliki Lagou, Yulia Lampi, Tom Dresselaers, Uwe Himmelreich, Adrian Liston
Pancreatic cancer is a high mortality form of cancer, with a median survival only six months. There are multiple associated risk factors associated, most importantly type 2 diabetes, obesity, pancreatitis and smoking. The relative rarity of the disease, however, has made it difficult to dissect causative risk factors, especially with related risk factors. A major unanswered question with important therapeutic implications is the effect of immunological responses on pancreatic cancer formation, with data from other cancers suggesting the potential for local immunological responses to either increase cancer development or increase cancer elimination...
October 6, 2017: Oncotarget
https://www.readbyqxmd.com/read/29104610/functional-pancreatic-neuroendocrine-tumour-causing-cushing-s-syndrome-the-effect-of-chemotherapy-on-clinical-symptoms
#19
Paulo Henrique do Amor Divino, Katia Regina Marchetti, Madson Q Almeida, Rachel P Riechelmann
Background: Neuroendocrine tumours (NETs) are a heterogeneous group of diseases that can originate from any part of the gastrointestinal tract, bronchi, thyroid and pancreas. These tumours may be functioning or not depending on their ability to produce active substances, such as adrenocorticotrophic hormone (ACTH). ACTH-producing pancreatic neuroendocrine tumours are rare, with limited data about effective antitumor therapies. Case Report: A 58-year-old man with a history of type-2 diabetes mellitus and arterial hypertension was diagnosed with Cushing's syndrome (CS) secondary to an ACTH ectopic production from a well-differentiated neuroendocrine tumour of the pancreas metastatic to the liver...
2017: Ecancermedicalscience
https://www.readbyqxmd.com/read/29100513/ghrelin-therapy-improves-lung-and-cardiovascular-function-in-experimental-emphysema
#20
Nazareth de Novaes Rocha, Milena Vasconcellos de Oliveira, Cássia Lisboa Braga, Gabriela Guimarães, Lígia de Albuquerque Maia, Gisele de Araújo Padilha, Johnatas Dutra Silva, Christina Maeda Takiya, Vera Luiza Capelozzi, Pedro Leme Silva, Patricia Rieken Macedo Rocco
BACKGROUND: Emphysema is a progressive disease characterized by irreversible airspace enlargement followed by a decline in lung function. It also causes extrapulmonary effects, such as loss of body mass and cor pulmonale, which are associated with shorter survival and worse clinical outcomes. Ghrelin, a growth-hormone secretagogue, stimulates muscle anabolism, has anti-inflammatory effects, promotes vasodilation, and improves cardiac performance. Therefore, we hypothesized that ghrelin might reduce lung inflammation and remodelling as well as improve lung mechanics and cardiac function in experimental emphysema...
November 3, 2017: Respiratory Research
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