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https://www.readbyqxmd.com/read/27910859/t-cell-programming-in-pancreatic-adenocarcinoma-a-review
#1
REVIEW
Y D Seo, V G Pillarisetty
Despite recent advancements in multimodal therapy, pancreatic ductal adenocarcinoma (PDA) continues to have a dismal prognosis. In the era of burgeoning immune therapies against previously difficult-to-treat malignancies, there has been growing interest in activating the immune system against PDA; however, unlike in other cancers such as melanoma and lymphoma, immunotherapy has not yielded many clinically significant results. To harness these mechanisms for therapeutic use, an in-depth understanding of T-cell programming in the immune microenvironment of PDA must be achieved...
December 2, 2016: Cancer Gene Therapy
https://www.readbyqxmd.com/read/27910857/myeloid-derived-suppressor-cells-and-their-role-in-pancreatic-cancer
#2
REVIEW
M Pergamo, G Miller
Pancreatic cancer is a devastating disease and ranks as the third most common cause of cancer-related death. Like many cancers, there has been increased interest in the role of the immune system in the progression and development of pancreatic cancer. In particular, immunosuppression within the tumor microenvironment (TME) is thought to impair the host's antitumor response. In this article, we review myeloid-derived suppressor cells and their contribution to this immunosuppression within the pancreatic TME...
December 2, 2016: Cancer Gene Therapy
https://www.readbyqxmd.com/read/27909715/a-new-scaffold-containing-small-intestinal-submucosa-and-mesenchymal-stem-cells-improves-pancreatic-islet-function-and-survival-in%C3%A2-vitro-and-in%C3%A2-vivo
#3
Dan Wang, Xiaoming Ding, Wujun Xue, Jin Zheng, Xiaohui Tian, Yang Li, Xiaohong Wang, Huanjin Song, Hua Liu, Xiaohui Luo
It is unknown whether a scaffold containing both small intestinal submucosa (SIS) and mesenchymal stem cells (MSCs) for transplantation may improve pancreatic islet function and survival. In this study, we examined the effects of a SIS-MSC scaffold on islet function and survival in vitro and in vivo. MSCs and pancreatic islets were isolated from Sprague-Dawley rats, and SIS was isolated from Bamei pigs. The islets were apportioned among 3 experimental groups as follows: SIS-islets, SIS-MSC-islets and control-islets...
November 29, 2016: International Journal of Molecular Medicine
https://www.readbyqxmd.com/read/27908159/a-preclinical-microbeam-facility-with-a-conventional-x-ray-tube
#4
Stefan Bartzsch, Craig Cummings, Stephan Eismann, Uwe Oelfke
PURPOSE: Microbeam radiation therapy is an innovative treatment approach in radiation therapy that uses arrays of a few tens of micrometer wide and a few hundreds of micrometer spaced planar x-ray beams as treatment fields. In preclinical studies these fields efficiently eradicated tumors while normal tissue could effectively be spared. However, development and clinical application of microbeam radiation therapy is impeded by a lack of suitable small scale sources. Until now, only large synchrotrons provide appropriate beam properties for the production of microbeams...
December 2016: Medical Physics
https://www.readbyqxmd.com/read/27908156/development-of-a-four-axis-moving-phantom-for-patient-specific-qa-of-surrogate-signal-based-tracking-imrt
#5
Nobutaka Mukumoto, Mitsuhiro Nakamura, Masahiro Yamada, Kunio Takahashi, Mami Akimoto, Yuki Miyabe, Kenji Yokota, Shuji Kaneko, Akira Nakamura, Satoshi Itasaka, Yukinori Matsuo, Takashi Mizowaki, Masaki Kokubo, Masahiro Hiraoka
PURPOSE: The purposes of this study were two-fold: first, to develop a four-axis moving phantom for patient-specific quality assurance (QA) in surrogate signal-based dynamic tumor-tracking intensity-modulated radiotherapy (DTT-IMRT), and second, to evaluate the accuracy of the moving phantom and perform patient-specific dosimetric QA of the surrogate signal-based DTT-IMRT. METHODS: The four-axis moving phantom comprised three orthogonal linear actuators for target motion and a fourth one for surrogate motion...
December 2016: Medical Physics
https://www.readbyqxmd.com/read/27906162/activation-of-myeloid-and-endothelial-cells-by-cd40l-gene-therapy-supports-t-cell-expansion-and-migration-into-the-tumor-microenvironment
#6
E Eriksson, R Moreno, I Milenova, L Liljenfeldt, L C Dieterich, L Christiansson, H Karlsson, G Ullenhag, S Mangsbo, A Dimberg, R Alemany, A Loskog
CD40 is an interesting target in cancer immunotherapy due to its ability to stimulate Th1 immunity via maturation of dendritic cells and to drive M2 to M1 macrophage differentiation. Pancreatic cancer has a high M2 content that has shown responsive to anti-CD40 agonist therapy and CD40 may thus be a suitable target for immune activation in these patients. In this study, a novel oncolytic adenovirus armed with a trimerized membrane-bound extracellular CD40L (TMZ-CD40L) was evaluated as a treatment of pancreatic cancer...
December 1, 2016: Gene Therapy
https://www.readbyqxmd.com/read/27905367/-celiac-trunk-resection-in-patients-with-pancreatic-cancer-and-severe-pain-syndrome
#7
Yu I Patyutko, M G Abgaryan, N E Kudashkin, A G Kotel'nikov
AIM: To show the advisability, satisfactory tolerance and good analgesic effect of surgery for pancreatic ductal carcinoma with celiac trunk invasion. MATERIAL AND METHODS: Distal subtotal pancreatectomy with resection of celiac trunk and common hepatic artery was made in 21 patients. RESULTS: Early postoperative complications after distal subtotal pancreatectomy with celiac trunk resection occurred in 10 (47.6%) patients. There was no postoperative mortality...
2016: Khirurgiia
https://www.readbyqxmd.com/read/27905047/endoscopic-ultrasound-guided-fine-needle-aspiration-biopsy-eus-fna-in-insulinomas-indications-and-clinical-relevance-in-a-single-investigator-cohort-of-47-patients
#8
Peter Herbert Kann, Roland Moll, Detlef Bartsch, Andreas Pfützner, Thomas Forst, Gianluca Tamagno, Joachim N Goebel, Verena Fourkiotis, Simona Raluca Bergmann, Maike Collienne
PURPOSE: This study was aimed to investigate the role and relevance of endoscopic ultrasound-guided fine-needle aspiration biopsy in the diagnostic work-up of insulinomas. METHODS: We have analysed the frequency, clinical indications, success rate (obtaining diagnostic tissue), diagnostic accuracy (in comparison to the pathological diagnosis after surgery), complications, and tolerability of endoscopic ultrasound-guided fine-needle aspiration biopsy and the localization and size of the lesions in 47 consecutive patients (29 females, 18 males; 46 ± 15 years) who had surgery for insulinoma following fasting test and were explored by single investigator EUS 1994-2015...
November 30, 2016: Endocrine
https://www.readbyqxmd.com/read/27904860/interventional-therapy-for-pancreatic-cancer
#9
REVIEW
Jianwei Zhu, Zhendong Jin
BACKGROUND: Palliative therapy and primarily chemoradiotherapy are the mainstream treatments in patients with locally advanced or metastatic pancreatic cancer (PC). Conventional endoscopy and endoscopic ultrasound (EUS)-guided interventional therapy has emerged as an important procedure for PC management. In this review, the progress in conventional endoscopy and EUS for PC management is discussed. SUMMARY: For local palliative therapy against PC, EUS-guided fine needle injection (FNI) could deliver different kinds of agents, such as radioactive seeds and fiducials...
October 2016: Gastrointestinal Tumors
https://www.readbyqxmd.com/read/27904769/disruption-of-actin-filaments-and-suppression-of-pancreatic-cancer-cell-viability-and-migration-following-treatment-with-polyisoprenylated-cysteinyl-amides
#10
Augustine T Nkembo, Olufisayo Salako, Rosemary A Poku, Felix Amissah, Elizabeth Ntantie, Hernan Flores-Rozas, Nazarius S Lamango
Pancreatic cancer is characterized by K-Ras mutations in over 90% of the cases. The mutations make the tumors aggressive and resistant to current therapies resulting in very poor prognoses. Valiant efforts to drug mutant K-Ras and related proteins for the treatment of cancers with Ras mutations have been elusive. The need thus persists for therapies to target and suppress the hyperactive K-Ras mutant proteins to normal levels of activity. Polyisoprenylated cysteinyl amide inhibitors (PCAIs) of polyisoprenylated methylated protein methyl esterase (PMPMEase) were designed to disrupt polyisoprenylated protein metabolism and/or functions...
2016: American Journal of Cancer Research
https://www.readbyqxmd.com/read/27904310/laparoscopic-cholecystectomy-in-patients-with-history-of-gastrectomy
#11
Ming-Jie Zhang, Qiang Yan, Guo-Lei Zhang, Si-Yu Zhou, Wen-Bin Yuan, Hua-Ping Shen
BACKGROUND AND OBJECTIVES: Patients with previous gastrectomy have an increased incidence of gallstones and gallbladder morbidity requiring surgery. We investigated the possible risk factors that contribute to severe gallbladder disease in patients with previous gastrectomy and the role of laparoscopic cholecystectomy (LC) in the treatment of these patients. METHODS: In this retrospective study, we reviewed a database of patients who underwent LC in our hospital during the period January 1, 2010, through May 1, 2015...
October 2016: JSLS: Journal of the Society of Laparoendoscopic Surgeons
https://www.readbyqxmd.com/read/27903983/dyrk1b-blocks-canonical-and-promotes-non-canonical-hedgehog-signaling-through-activation-of-the-mtor-akt-pathway
#12
Rajeev Singh, Pavan Kumar Dhanyamraju, Matthias Lauth
Hedgehog (Hh) signaling plays important roles in embryonic development and in tumor formation. Apart from the well-established stimulation of the GLI family of transcription factors, Hh ligands promote the phosphorylation and activation of mTOR and AKT kinases, yet the molecular mechanism underlying these processes are unknown. Here, we identify the DYRK1B kinase as a mediator between Hh signaling and mTOR/AKT activation. In fibroblasts, Hh signaling induces DYRK1B protein expression, resulting in activation of the mTOR/AKT kinase signaling arm...
November 26, 2016: Oncotarget
https://www.readbyqxmd.com/read/27903970/ion-channels-in-control-of-pancreatic-stellate-cell-migration
#13
Hannah Storck, Benedikt Hild, Sandra Schimmelpfennig, Sarah Sargin, Nikolaj Nielsen, Angela Zaccagnino, Thomas Budde, Ivana Novak, Holger Kalthoff, Albrecht Schwab
Pancreatic stellate cells (PSCs) play a critical role in the progression of pancreatic ductal adenocarcinoma (PDAC). Once activated, PSCs support proliferation and metastasis of carcinoma cells. PSCs even co-metastasise with carcinoma cells. This requires the ability of PSCs to migrate. In recent years, it has been established that almost all "hallmarks of cancer" such as proliferation or migration/invasion also rely on the expression and function of ion channels. So far, there is only very limited information about the function of ion channels in PSCs...
November 26, 2016: Oncotarget
https://www.readbyqxmd.com/read/27903583/aspirin-therapy-reduces-the-ability-of-platelets-to-promote-colon-and-pancreatic-cancer-cell-proliferation-implications-for-the-oncoprotein-c-myc
#14
Annachiara Mitrugno, Joanna L Sylman, Anh T P Ngo, Jiaqing Pang, Rosalie C Sears, Craig Williams, Owen J T McCarty
Aspirin, an anti-inflammatory and anti-thrombotic drug, has become the focus of intense research as a potential anti-cancer agent owing to its ability to reduce tumor proliferation in vitro and to prevent tumorigenesis in patients. Studies have found an anti-cancer effect of aspirin when used in low, anti-platelet doses. However, the mechanism(s) through which low dose aspirin works is poorly understood. In this study we aimed to determine the effect of aspirin on the crosstalk between platelets and cancer cells...
November 30, 2016: American Journal of Physiology. Cell Physiology
https://www.readbyqxmd.com/read/27902970/activity-of-the-novel-polo-like-kinase-4-inhibitor-cfi-400945-in-pancreatic-cancer-patient-derived-xenografts
#15
I Lohse, J M Mason, P J Cao, Melania Pintilie, M R Bray, D W Hedley
BACKGROUND: Polo-like kinase 4 (PKL4) plays a key role in centriole replication. Hence PLK4 inhibition disrupts mitosis, and offers a novel approach to treating chromosomally unstable cancers, including pancreatic cancer. CFI-400945 is a first in class small molecule PLK4 inhibitor, currently undergoing early phase clinical trials. RESULTS: Treatment with CFI-400945 significantly reduced tumor growth and increased survival in four out of the six models tested. Consistent with PLK4 inhibition, we observed reduced expression of the proliferation marker Ki-67 associated with an increase in nuclear diameter during treatment with CFI-400945...
November 25, 2016: Oncotarget
https://www.readbyqxmd.com/read/27900729/radical-resection-of-t1-pancreatic-adenocarcinoma-with-a-pseudocyst-of-the-tail-due-to-acute-obstructive-pancreatitis-report-of-a-case
#16
Yuki Fujiwara, Fumitake Suzuki, Masaru Kanehira, Yasuro Futagawa, Tomoyoshi Okamoto, Katsuhiko Yanaga
A 53-year-old male visited his primary physician for epigastric and back pain. Abdominal-enhanced computed tomography (CT) revealed a simple cyst of the pancreatic tail attached to the stomach. A distal main pancreatic duct (MPD) was clearly dilated, but no pancreatic tumor was identified around the stenosis of MPD by CT scan and magnetic resonance cholangiopancreatography (MRCP). Endoscopic retrograde pancreatography (ERP) revealed stenosis and distal dilation of the MPD located between the body and tail of the pancreas...
December 2016: Surgical Case Reports
https://www.readbyqxmd.com/read/27900090/traumatic-rupture-of-solid-pseudopapillary-tumors-of-the-pancreas-in-children-a-case-report
#17
Semih Lütfi Mirapoğlu, Ibrahim Aydogdu, Zuhal Gucin, Temel Fatih Yilmaz, Tarik Umutoglu, Huseyin Kilincaslan
Solid pseudopapillary tumor (SPT) of the pancreas is a pathological entity rarely encountered in children. Despite its malignant characteristics, SPT has a favorable clinical prognosis. This tumor is more frequently observed in females and is commonly localized in the tail and body of the pancreas. This is the case report of a 9-year-old female patient who presented with severe abdominal pain of sudden onset and vomiting following blunt abdominal trauma. Upon physical examination, abdominal distension, tenderness and abdominal guarding were detected...
November 2016: Molecular and Clinical Oncology
https://www.readbyqxmd.com/read/27900027/notch4-inhibition-reduces-migration-and-invasion-and-enhances-sensitivity-to-docetaxel-by-inhibiting-akt-fascin-in-pancreatic-cancer-cells
#18
Cui-Juan Qian, Yi-Yi Chen, Xin Zhang, Fu-Qiang Liu, Ting-Ting Yue, Bei Ye, Jun Yao
Overexpression of Notch4 is associated with a variety of tumor types. Only sparse information exists on Notch4 expression in pancreatic cancer (PC). The present study demonstrated that Notch4 expression was significantly upregulated in PC cell lines compared with a non-transformed pancreatic epithelial cell line, HPDE6c-7. To investigate the possible role of Notch4 in PC cells, an RNA interference approach was used to silence Notch4 expression. The results revealed that small interfering RNA (siRNA) targeting Notch4 significantly impeded the viability, migration and invasion abilities of PC cells in vitro...
November 2016: Oncology Letters
https://www.readbyqxmd.com/read/27900001/expression-of-glucose-transporter-1-is-correlated-with-hypoxia-inducible-factor-1%C3%AE-and-malignant-potential-in-pancreatic-neuroendocrine-tumors
#19
Minoru Fujino, Shinichi Aishima, Koji Shindo, Yasunori Oda, Katsuya Morimatsu, Kosuke Tsutsumi, Takao Otsuka, Masao Tanaka, Yoshinao Oda
The present study aimed to investigate the prognostic usefulness of the expression of glucose transporter type 1 (GLUT-1) and GLUT-2, hypoxia-inducible factor 1α (HIF-1α) and insulin-like growth factor II messenger RNA-binding protein 3 (IMP3) in pancreatic neuroendocrine tumors (pNETs). Immunohistochemical staining for GLUT-1, GLUT-2, HIF-1α and IMP3 was performed in 70 pNET specimens. The expression of GLUT-1 and HIF-1α was significantly higher in the World Health Organization grade 2 (G2), neuroendocrine carcinoma cases and mixed-type pNETs compared with the G1 cases...
November 2016: Oncology Letters
https://www.readbyqxmd.com/read/27896637/seom-clinical-guideline-for-the-treatment-of-pancreatic-cancer-2016
#20
R Vera, E Dotor, J Feliu, E González, B Laquente, T Macarulla, E Martínez, J Maurel, M Salgado, J L Manzano
Pancreatic cancer remains an aggressive disease with a 5 year survival rate of 5%. Only 15% of patients with pancreatic cancer are eligible for radical surgery. Evidence suggests a benefit on survival with adjuvant chemotherapy (gemcitabine o fluourouracil) after R1/R0 resection. Adjuvant chemoradiotherapy is also a valid option in patients with positive margins. Borderline resectable pancreatic cancer is defined as the involvement of the mesenteric vasculature with a limited extension. These tumors are technically resectable, but with a high risk of positive margins...
November 28, 2016: Clinical & Translational Oncology
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