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https://www.readbyqxmd.com/read/28638738/activation-of-the-fcgammareceptoriiia-on-human-natural-killer-cells-leads-to-increased-expression-of-functional-interleukin-21-receptor
#1
Elizabeth L McMichael, Nicholas B Courtney, Megan C Duggan, Robert Wesolowski, Dionisia Quiroga, Sri Vidya Kondadasula, Lakhvir S Atwal, Neela Bhave, Eric Luedke, Alena Cristina Jaime-Ramirez, Amanda R Campbell, Xiaokui Mo, John C Byrd, William E Carson Iii
Natural killer (NK) cells are innate immune effector cells that play a crucial role in immune surveillance and the destruction of cancer cells. NK cells express a low-affinity receptor for the Fc or constant region of immunoglobulin G (FcγRIIIa) and multiple cytokine receptors that respond to antibody-coated targets and cytokines in the tumor microenvironment. In the present work, microarray gene expression analysis revealed that the IL-21 receptor (IL-21R) was strongly upregulated following FcR stimulation...
2017: Oncoimmunology
https://www.readbyqxmd.com/read/28634480/fc-galactosylation-of-human-immunoglobulin-gamma-isotypes-improves-c1q-binding-and-enhances-complement-dependent-cytotoxicity
#2
Benjamin Peschke, Christian W Keller, Patrick Weber, Isaak Quast, Jan D Lünemann
Binding of the complement component C1q to the CH2 domain of antigen-bound immunoglobulin gamma (IgG) activates the classical complement pathway and depends on its close proximity to Fc fragments of neighboring antibodies. IgG subclasses contain a highly conserved asparagine 297 (N)-linked biantennary glycan within their CH2 domains, the core structure of which can be extended with terminal galactose and sialic acid residues. To investigate whether Fc-glycosylation regulates effector functions of human IgG subclasses, we cloned the antigen-binding region of the CD20-specific monoclonal antibody rituximab into IgG isotype expression vectors...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/28622839/water-lavage-as-an-adjunct-to-cytoreductive-surgery-with-hyperthermic-intraperitoneal-chemotherapy-crs-hipec
#3
Emmanuel Gabriel, Smit Singla, Minhyung Kim, Daniel Fisher, Colin Powers, Anthony Visioni, Kristopher Attwood, Joseph Skitzki
BACKGROUND: Water lavage (WL) during gastrointestinal cancer surgery has osmotically mediated lytic effects on tumor cells. We investigated the safety and efficacy of WL with CRS-HIPEC. METHODS: This is a retrospective review, 1/2003-7/2014, of a single institution experience with CRS-HIPEC comparing patients who had WL (WL+) to those who did not (WL-). RESULTS: Of 157 CRS-HIPECs, 16 (10.2%) were WL+. WL+ had more PCI scores >20 compared to WL- (56...
June 6, 2017: American Journal of Surgery
https://www.readbyqxmd.com/read/28620927/bendamustine-for-relapsed-blastic-plasmacytoid-dendritic-cell-leukaemia
#4
Sarah Bétrian, Sarah Guenounou, Isabelle Luquet, Cécile Demur, Anne Huynh, Loïc Ysebaert, Christian Recher, Françoise Huguet
Optimal treatment of blastic plasmacytoid dendritic cell neoplasm (BPDCN), a rare entity of dismal prognosis previously described as CD4+/CD56+ hematodermic malignancies, is not defined. We report five cases of relapsed BPDCN treated with bendamustine hydrochloride, a well-tolerated bifunctional drug acting as an alkylating and antimetabolite agent. All patients were above the age of 50 years and in advanced disease (early first relapse in two, subsequent relapse in three; multi-organ involvement in four; previous intensive chemotherapy in five; and stem cell transplantation in four)...
June 2017: Hematological Oncology
https://www.readbyqxmd.com/read/28597329/safety-and-efficacy-of-mogamulizumab-in-patients-with-adult-t-cell-leukemia-lymphoma-in-japan-interim-results-of-postmarketing-all-case-surveillance
#5
Kenji Ishitsuka, Satoshi Yurimoto, Kouichi Kawamura, Yukie Tsuji, Manabu Iwabuchi, Takeshi Takahashi, Kensei Tobinai
We present the interim results of a postmarketing all-case surveillance study in patients with C-C chemokine receptor 4 (CCR4)-positive, relapsed or refractory adult T-cell leukemia-lymphoma (ATL) treated with the anti-CCR4 monoclonal antibody mogamulizumab since its 2012 launch in Japan. The safety and efficacy analysis populations comprised 484 and 442 patients, respectively. The ATL subtype was acute in 58.9% and lymphoma in 34.2% of patients. All patients were scheduled to receive intravenous infusions of mogamulizumab (1...
June 9, 2017: International Journal of Hematology
https://www.readbyqxmd.com/read/28596531/rf1-attenuation-enables-efficient-non-natural-amino-acid-incorporation-for-production-of-homogeneous-antibody-drug-conjugates
#6
Gang Yin, Heather T Stephenson, Junhao Yang, Xiaofan Li, Stephanie M Armstrong, Tyler H Heibeck, Cuong Tran, Mary Rose Masikat, Sihong Zhou, Ryan L Stafford, Alice Y Yam, John Lee, Alexander R Steiner, Avinash Gill, Kalyani Penta, Sonia Pollitt, Ramesh Baliga, Christopher J Murray, Christopher D Thanos, Leslie M McEvoy, Aaron K Sato, Trevor J Hallam
Amber codon suppression for the insertion of non-natural amino acids (nnAAs) is limited by competition with release factor 1 (RF1). Here we describe the genome engineering of a RF1 mutant strain that enhances suppression efficiency during cell-free protein synthesis, without significantly impacting cell growth during biomass production. Specifically, an out membrane protease (OmpT) cleavage site was engineered into the switch loop of RF1, which enables its conditional inactivation during cell lysis. This facilitates extract production without additional processing steps, resulting in a scaleable extract production process...
June 8, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28589082/genetically-engineered-vaccinia-viruses-as-agents-for-cancer-treatment-imaging-and-transgene-delivery
#7
REVIEW
Dana Haddad
Despite advances in technology, the formidable challenge of treating cancer, especially if advanced, still remains with no significant improvement in survival rates, even with the most common forms of cancer. Oncolytic viral therapies have shown great promise for the treatment of various cancers, with the possible advantages of stronger treatment efficacy compared to conventional therapy due to higher tumor selectivity, and less toxicity. They are able to preferentially and selectively propagate in cancer cells, consequently destroying tumor tissue mainly via cell lysis, while leaving non-cancerous tissues unharmed...
2017: Frontiers in Oncology
https://www.readbyqxmd.com/read/28588796/analysis-of-the-incidence-of-tumor-lysis-syndrome-in-patients-with-hematological-malignancies-treated-with-rasburicase
#8
Eiseki Usami, Michio Kimura, Mina Iwai, Hitomi Teramachi, Tomoaki Yoshimura
The purpose of this study was to assess the incidence of tumor lysis syndrome (TLS) in patients with hematological malignancies treated with rasburicase, and to evaluate the dose and duration of rasburicase administration. A total of 52 patients were enrolled. The background of the patients, incidence of TLS and laboratory data were retrospectively examined; in addition, the dose and duration of rasburicase administration and the factors affecting the onset of TLS were evaluated and compared among TLS risk categories...
June 2017: Molecular and Clinical Oncology
https://www.readbyqxmd.com/read/28587951/treatment-na%C3%A3-ve-spontaneous-tumor-lysis-syndrome-in-metastatic-prostate-adenocarcinoma-an-unusual-suspect
#9
Maya Ignaszewski, Patrick Kohlitz
Tumor lysis syndrome (TLS) is a potentially fatal condition defined both by laboratory and clinical criteria. It is caused by the catabolism of tumor cells which leads to considerable release and elevated levels of phosphate, potassium and uric acid in the bloodstream. These electrolyte derangements predispose patients to renal tubule uric acid precipitation, acute kidney injury, arrhythmias, neuromuscular irritability and even seizures. Although this phenomenon is well described with hematological malignancies, it is also known to occur among solid tumors...
May 26, 2017: American Journal of Emergency Medicine
https://www.readbyqxmd.com/read/28578884/microrna-335-5p-plays-dual-roles-in-periapical-lesions-by-complex-regulation-pathways
#10
Junli Yue, Puyu Wang, Qingchun Hong, Qian Liao, Li Yan, Weizhe Xu, Xi Chen, Qinghua Zheng, Lan Zhang, Dingming Huang
INTRODUCTION: MicroRNA-335-5p has been reported to regulate osteogenic and chondrogenic differentiations of mesenchymal stem cells. The aim of this study was to explore the function and regulation mechanism of miR-335-5p in apical periodontitis (AP). METHODS: Total RNAs were extracted from human periodontal ligament fibroblasts (HPDLFs), 10 AP tissues, and 6 healthy periodontal ligament tissues using lysis buffer. Gene expression was detected using real-time polymerase chain reaction...
June 1, 2017: Journal of Endodontics
https://www.readbyqxmd.com/read/28576831/shifting-the-balance-of-activating-and-inhibitory-natural-killer-receptor-ligands-on-braf-v600e-melanoma-lines-with-vemurafenib
#11
Alexandra Frazao, Marina Colombo, Emmanuelle Fourmentraux-Neves, Meriem Messaoudene, Sylvie Rusakiewicz, Laurence Zitvogel, Eric Vivier, Frederic Vely, Florence Faure, Brigitte Dreno, Houssem Benlalam, Fanny Bouquet, Ariel Savina, Eric Pasmant, Antoine Toubert, Marie Francoise Avril, Anne Caignard
Over 60% of human melanoma tumors bear a mutation in the BRAF gene. The most frequent mutation is a substitution at codon 600 (V600E), leading to a constitutively active BRAF and overactivation of the mitogen-activated protein kinase (MAPK) pathway. Patients harboring mutated BRAF respond to kinase inhibitors such as vemurafenib. However, these responses are transient and relapses are frequent. Melanoma cells are efficiently lysed by activated natural killer (NK) cells. Melanoma cells express several stress-induced ligands that are recognized by activating NK cell receptors...
June 2, 2017: Cancer Immunology Research
https://www.readbyqxmd.com/read/28567163/targeting-melanoma-with-cancer-killing-viruses
#12
Tiantian Zhang, Yogesh R Suryawanshi, Helene M Woyczesczyk, Karim Essani
Melanoma is the deadliest skin cancer with ever-increasing incidence. Despite the development in diagnostics and therapies, metastatic melanoma is still associated with significant morbidity and mortality. Oncolytic viruses (OVs) represent a class of novel therapeutic agents for cancer by possessing two closely related properties for tumor reduction: virus-induced lysis of tumor cells and induction of host anti-tumor immune responses. A variety of viruses, either in "natural" or in genetically modified forms, have exhibited a remarkable therapeutic efficacy in regressing melanoma in experimental and/or clinical studies...
2017: Open Virology Journal
https://www.readbyqxmd.com/read/28560733/complete-remission-with-romidepsin-in-a-patient-with-t-cell-acute-lymphoblastic-leukemia-refractory-to-induction-hyper-cvad
#13
Mark W Brunvand, John Carson
T-cell acute lymphoblastic leukemia (T-ALL) and T-cell lymphoblastic lymphoma (T-LBL) are neoplasms that originate from T-cell precursors. Outcomes in adult patients with T-ALL/LBL remain unsatisfactory; early relapse following intensive induction chemotherapy is a concern, and patients with relapsed or refractory disease have a poor prognosis. Romidepsin is a potent, class 1 selective histone deacetylase inhibitor approved for the treatment of patients with peripheral T-cell lymphoma who have had ≥1 prior therapy and patients with cutaneous T-cell lymphoma who have had ≥1 prior systemic therapy...
May 30, 2017: Hematological Oncology
https://www.readbyqxmd.com/read/28559826/spontaneous-tumor-lysis-syndrome-in-a-patient-with-metastatic-small-cell-lung-cancer-a-case-report
#14
Boonphiphop Boonpheng, Ghulam Murtaza, David Ginn
Tumor lysis syndrome is an oncologic emergency that usually occurs after chemotherapy in patients with hematologic malignancies. Tumor lysis syndrome is rare in cases of solid tumors, especially when it occurs spontaneously. Herein, we present a case of spontaneous tumor lysis syndrome in a 55-year-old woman who presented with dyspnea and was found to have extensive metastatic small cell lung cancer. She developed acute oliguric renal failure and multiple electrolyte abnormalities requiring hemodialysis. The findings of this case suggest that clinicians should maintain a high index of suspicion for patients with malignancies who demonstrate the classic symptom of laboratory abnormalities even in the absence of chemotherapy...
January 2017: Case Reports in Oncology
https://www.readbyqxmd.com/read/28555079/muc1-inhibition-leads-to-decrease-in-pd-l1-levels-via-up-regulation-of-mirnas
#15
A R Pyzer, D Stroopinsky, J Rosenblatt, E Anastasiadou, H Rajabi, A Washington, A Tagde, J-H Chu, M Coll, A L Jiao, L T Tsai, D E Tenen, L Cole, K Palmer, A Ephraim, R K Leaf, M Nahas, A Apel, Mb-N Zommer, S Jain, M McMasters, L Mendez, J Arnason, B A Raby, F Slack, D Kufe, D Avigan
The PD-L1/PD-1 pathway is a critical component of the immunosuppressive tumor microenvironment in AML, but little is known about its regulation. We investigated the role of the MUC1 oncoprotein in modulating PD-L1 expression in AML. Silencing of MUC1 in AML cell lines suppressed PD-L1 expression without a decrease in PD-L1 mRNA levels, suggesting a post-transcriptional mechanism of regulation. We identified the microRNAs miR-200c and miR-34a as key regulators of PD-L1 expression in AML. Silencing of MUC1 in AML cells led to a marked increase in miR-200c and miR-34a levels, without changes in precursor microRNA, suggesting that MUC1 might regulate microRNA processing...
May 30, 2017: Leukemia: Official Journal of the Leukemia Society of America, Leukemia Research Fund, U.K
https://www.readbyqxmd.com/read/28550492/microrna-889-is-downregulated-by-histone-deacetylase-inhibitors-and-confers-resistance-to-natural-killer-cytotoxicity-in-hepatocellular-carcinoma-cells
#16
Haitao Xie, Qiugui Zhang, Hui Zhou, Jun Zhou, Ji Zhang, Yan Jiang, Jinghong Wang, Xianglin Meng, Leping Zeng, Xiaoxin Jiang
Major histocompatibility complex class I chain-related gene B (MICB) is expressed on tumor cells and participates in natural killer (NK) cell-mediated antitumor immune response through engagement with the NKG2D receptor. This study was undertaken to identify novel microRNA (miRNA) regulators of MICB and clarify their functions in NK cell-mediated cytotoxicity to hepatocellular carcinoma (HCC) cells. Bioinformatic analysis and luciferase reporter assay were conducted to search for MICB-targeting miRNAs. Overexpression and knockdown experiments were performed to determine the roles of candidate miRNAs in the susceptibility of HCC cells to NK lysis...
May 26, 2017: Cytotechnology
https://www.readbyqxmd.com/read/28539588/cooperation-of-oncolytic-herpes-virotherapy-and-pd-1-blockade-in-murine-rhabdomyosarcoma-models
#17
Chun-Yu Chen, Pin-Yi Wang, Brian Hutzen, Les Sprague, Hayley M Swain, Julia K Love, Joseph R Stanek, Louis Boon, Joe Conner, Timothy P Cripe
Oncolytic virotherapy is an effective immunotherapeutic approach for cancer treatment via a multistep process including direct tumor cell lysis, induction of cytotoxic or apoptosis-sensitizing cytokines and promotion of antitumor T cell responses. Solid tumors limit the effectiveness of immunotherapeutics in diverse ways such as secretion of immunosuppressive cytokines and expression of immune inhibitory ligands to inhibit antitumor T cell function. Blocking programmed cell death protein (PD)-1 signaling, which mediates T cell suppression via engagement of its inhibitory ligands, PD-L1 or PD-L2, is of particular interest due to recent successes in many types of cancer...
May 24, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28538856/-an-adolescent-with-lumbosacral-instability-due-to-the-presence-of-a-hydatid-cyst-a-case-report
#18
Miguel Vizcarra, Mijaíl Mujica, Vladimir Sánchez, Paul Méndez
Hydatidosis, caused by Echinococcus granulosus, affects the spinal column in 0.5-2% of all cases, with the sacral column being a rare location typically observed only in adults. The case is reported of a 14-year-old boy from Juliaca (Puno, Peru) who presented with chronic lower back pain and cauda equina syndrome. He was initially attended to in Juliaca, and then transferred to the Hospital Edgardo Rebagliati Martins (Lima, Peru) with a diagnosis of sacral tumor. In magnetic resonance imaging, a multicystic tumor was seen with L5 and S1 lysis and instability...
January 2017: Revista Peruana de Medicina Experimental y Salud Pública
https://www.readbyqxmd.com/read/28536380/tumor-associated-macrophages-in-oncolytic-virotherapy-friend-or-foe
#19
REVIEW
Nicholas L Denton, Chun-Yu Chen, Thomas R Scott, Timothy P Cripe
Cancer therapy remains a challenge due to toxicity limitations of chemotherapy and radiation therapy. Oncolytic viruses that selectively replicate and destroy cancer cells are of increasing interest. In addition to direct cell lysis, these vectors stimulate an anti-tumor immune response. A key regulator of tumor immunity is the tumor-associated macrophage population. Macrophages can either support oncolytic virus therapy through pro-inflammatory stimulation of the anti-tumor response at the cost of hindering direct oncolysis or through immunosuppressive protection of virus replication at the cost of hindering the anti-tumor immune response...
July 7, 2016: Biomedicines
https://www.readbyqxmd.com/read/28535796/identification-of-eml4-alk-as-an-alternative-fusion-gene-in-epithelioid-inflammatory-myofibroblastic-sarcoma
#20
Quan Jiang, Han-Xing Tong, Ying-Yong Hou, Yong Zhang, Jing-Lei Li, Yu-Hong Zhou, Jing Xu, Jiong-Yuan Wang, Wei-Qi Lu
BACKGROUND: Known as solid tumors of intermediate malignant potential, most inflammatory myofibroblastic tumors (IMTs) are treatable as long as the tumor is en-bloc resected. However, in some cases, the tumors have recurred and grown rapidly after successful surgery. Some of these tumors were classified as an epithelioid inflammatory myofibroblastic sarcoma (EIMS). Most previously reported EIMSs have been caused by RANBP2-ALK fusion gene. We herein report an EIMS case caused by an EML4-ALK fusion gene...
May 23, 2017: Orphanet Journal of Rare Diseases
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