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https://www.readbyqxmd.com/read/30044833/lentiviral-delivery-of-novel-fusion-protein-il12-fasti-for-cancer-immune-gene-therapy
#1
Xi Yang, Xianzhong Yu, Yanzhang Wei
Many of the cytokine-based cancer immunotherapies are hindered by the devastating side effects of systemic delivery of the cytokines. To address this problem, we previously described a novel approach to locally achieve high doses of interleukin-12 (IL-12) in tumors and demonstrated that bi-functional fusion protein mIL-12/FasTI expressed by stable clones of TC-1 cells efficiently suppressed tumor proliferation by activating natural killer (NK) cells and other cytolytic killer cells and sending apoptotic signals into tumor cells...
2018: PloS One
https://www.readbyqxmd.com/read/30024300/effect-of-cationic-lipid-in-cationic-liposomes-on-sirna-delivery-into-the-lung-by-intravenous-injection-of-cationic-lipoplex
#2
Yoshiyuki Hattori, Mari Nakamura, Nozomi Takeuchi, Kyoko Tamaki, Satono Shimizu, Yuki Yoshiike, Masamitsu Taguchi, Hiroaki Ohno, Kei-Ichi Ozaki, Hiraku Onishi
Cationic liposomes composed of dialkyl cationic lipid such as 1,2-dioleoyl-3-trimethylammonium-propane (DOTAP) can efficiently deliver siRNA to the lungs following the intravenous injection of cationic liposome/siRNA complexes (lipoplexes). In this study, we examined the effect of cationic lipid of cationic liposomes on siRNA delivery to the lungs after intravenous injection. We used 6 kinds of cationic cholesterol derivatives and 11 kinds of dialkyl or trialkyl cationic lipids as cationic lipids, and prepared 17 kinds of cationic liposomes composed of a cationic lipid and 1,2-dioleoyl-L-α-glycero-3-phosphatidylethanolamine (DOPE) for evaluation of siRNA biodistribution and in vivo gene silencing effects...
July 19, 2018: Journal of Drug Targeting
https://www.readbyqxmd.com/read/30016696/characterization-of-a-novel-endogenous-cysteine-proteinase-inhibitor-trichocystatin-3-tc-3-localized-on-the-surface-of-trichomonas-vaginalis
#3
Diana Belén Sánchez-Rodríguez, Jaime Ortega-López, Rosa Elena Cárdenas-Guerra, Gerardo Reséndiz-Cardiel, Bibiana Chávez-Munguía, Anel Lagunes-Guillen, Rossana Arroyo
Trichomonas vaginalis is a flagellated protist responsible for human trichomoniasis. T. vaginalis has three genes encoding for endogenous cysteine proteinase (CP) inhibitors, known as trichocystatin-1 through trichocystatin-3 (TC-1, TC-2, and TC-3). These inhibitors belong to the cystatin family. In this study, we characterized trichocystatin-3 (TC-3), an endogenous cysteine proteinase (CP) inhibitor of T. vaginalis. TC-3 possesses a signal peptide in the N-terminus and two putative glycosylation sites (typical of family 2, cystatins) but lacks the PW motif and cysteine residues (typical of family 1, stefins)...
September 2018: International Journal of Biochemistry & Cell Biology
https://www.readbyqxmd.com/read/29946612/magnetic-relaxation-and-three-dimensional-critical-fluctuations-in-b-doped-q-carbon-a-high-temperature-superconductor
#4
Anagh Bhaumik, Ritesh Sachan, Jagdish Narayan
Dimensional fluctuations and magnetic relaxations in high-temperature superconductors are key considerations for practical applications in high-speed electronic devices. We report the creep of trapped magnetic flux and three-dimensional critical fluctuations near the superconducting transition temperature (Tc = 36 K) in B-doped amorphous Q-carbon. The superconducting phase in B-doped Q-carbon is formed by nanosecond pulsed laser melting in a super undercooled state followed by subsequent quenching. Time-dependent magnetic moment measurements in the B-doped Q-carbon follow the Anderson-Kim logarithmic decay model with the calculated value of pinning potential to be 0...
July 9, 2018: Nanoscale
https://www.readbyqxmd.com/read/29929402/combined-immunization-against-tgf-%C3%AE-1-enhances-hpv16-e7-specific-vaccine-elicited-antitumour-immunity-in-mice-with-grafted-tc-1-tumours
#5
Xiaojie Chu, Yang Li, Weiwei Huang, Xuejun Feng, Pengyan Sun, Yufeng Yao, Xu Yang, Wenjia Sun, Hongmei Bai, Cunbao Liu, Yanbing Ma
Therapeutic vaccine appears to be a potential approach for the treatment of human papillomavirus (HPV)-associated tumours, but its efficacy can be dampened by immunosuppressive factors such as transforming growth factor (TGF)-β1. We sought to investigate whether active immunity against TGF-β1 enhances the anti-tumour immunity elicited by an HPV16 E7-specific vaccine that we developed previously. In this study, virus-like particles of hepatitis B virus core antigen were used as vaccine carriers to deliver either TGF-β1 B cell epitopes or E7 cytotoxic T-lymphocyte epitope...
June 22, 2018: Artificial Cells, Nanomedicine, and Biotechnology
https://www.readbyqxmd.com/read/29920829/a-discrete-self-assembled-pd12-triangular-orthobicupola-cage-and-its-use-for-intramolecular-cycloaddition
#6
Partha Sarathi Mukherjee, Imtiyaz Ahmad Bhat, Anthonisamy Devaraj, Ennio Zangrando
A water soluble M12L6 coordination cage (TC-1) was synthesized by coordination self-assembly of a symmetrical tetrapyridyl donor (L) with the 90° ditopic acceptor cis-(tmeda)Pd(NO3)2 [tmeda = N,N,N',N'-tetramethylethane-1,2-diamine]. The newly synthesized M12L6 coordination assembly represents an uncommon example of a coordination cage having triangular orthobicupola-like geometry. It was characterized by multinuclear NMR, ESI-MS and single crystal X-ray diffraction analysis (SCXRD). Self-assembly of a tetratopic donor with a cis-blocked 90° ditopic acceptor generally yields either tri-/tetra-/hexagonal barrels or closed cubic cages...
June 19, 2018: Chemistry: a European Journal
https://www.readbyqxmd.com/read/29894683/synthetic-antimicrobial-peptides-delocalize-membrane-bound-proteins-thereby-inducing-a-cell-envelope-stress-response
#7
Soraya Omardien, Jan W Drijfhout, Henk van Veen, Soraya Schachtschabel, Martijn Riool, Leendert W Hamoen, Stanley Brul, Sebastian A J Zaat
BACKGROUND: Three amphipathic cationic antimicrobial peptides (AMPs) were characterized by determining their effect on Gram-positive bacteria using Bacillus subtilis strain 168 as a model organism. These peptides were TC19 and TC84, derivatives of thrombocidin-1 (TC-1), the major AMPs of human blood platelets, and Bactericidal Peptide 2 (BP2), a synthetic designer peptide based on human bactericidal permeability increasing protein (BPI). METHODS: To elucidate the possible mode of action of the AMPs we performed a transcriptomic analysis using microarrays...
June 9, 2018: Biochimica et Biophysica Acta
https://www.readbyqxmd.com/read/29862288/comparative-proteomic-study-of-the-antiproliferative-activity-of-frog-host-defence-peptide-caerin-1-9-and-its-additive-effect-with-caerin-1-1-on-tc-1-cells-transformed-with-hpv16-e6-and-e7
#8
Guoying Ni, Di Liang, Scott F Cummins, Shelley F Walton, Shu Chen, Yuejian Wang, Kate Mounsey, Ming Q Wei, Jianwei Yuan, Xuan Pan, Xiaosong Liu, Tianfang Wang
Caerin is a family of peptides isolated from the glandular secretion of Australian tree frogs, the genus Litoria , and has been previously shown to have anticancer activity against several cancer cells. In this work, we used two host-defence peptides, caerin 1.1 and caerin 1.9, to investigate their ability to inhibit a murine derived TC-1 cell transformed with human papillomavirus 16 E6 and E7 growth in vitro . Caerin 1.9 inhibits TC-1 cell proliferation, although inhibition is more pronounced when applied in conjunction with caerin 1...
2018: BioMed Research International
https://www.readbyqxmd.com/read/29783083/adsorption-behaviors-of-supercritical-lennard-jones-fluid-in-slit-like-pores
#9
Yingfeng Li, Mengqi Cui, Bo Peng, Mingde Qin
Understanding the adsorption behaviors of supercritical fluid in confined space is pivotal for coupling the supercritical technology and the membrane separation technology. Based on grand canonical Monte Carlo simulations, the adsorption behaviors of a Lennard-Jones (LJ) fluid in slit-like pores at reduced temperatures over the critical temperature, Tc *  = 1.312, are investigated; and impacts of the wall-fluid interactions, the pore width, and the temperature are taken into account. It is found that even if under supercritical conditions, the LJ fluid can undergo a "vapor-liquid phase transition" in confined space, i...
August 2018: Journal of Molecular Graphics & Modelling
https://www.readbyqxmd.com/read/29783020/immune-modulation-of-a-lipid-soluble-extract-of-pinellia-pedatisecta-schott-in-the-tumor-microenvironment-of-an-hpv-tumor-burdened-mouse-model
#10
Haixia Huang, Mingxing Zhang, Sheng Yao, Meng Zhang, Jing Peng
ETHNOPHARMACOLOGICAL RELEVANCE: Pinellia pedatisecta Schott extract (PE), a traditional Chinese medicine, has been used to reduce swelling, dry dampness and suppress cervical tumors. AIMS: To evaluate the roles of PE in the regulation of anti-tumor effects and the cellular immune response in the tumor microenvironment. METHODS: The immune microenvironment of HPV+ TC-1 tumors was examined by immunohistochemistry, real-time PCR and flow cytometry...
October 28, 2018: Journal of Ethnopharmacology
https://www.readbyqxmd.com/read/29702142/dual-tlr-agonist-nanodiscs-as-a-strong-adjuvant-system-for-vaccines-and-immunotherapy
#11
Rui Kuai, Xiaoqi Sun, Wenmin Yuan, Lukasz J Ochyl, Yao Xu, Alireza Hassani Najafabadi, Lindsay Scheetz, Min-Zhi Yu, Ishina Balwani, Anna Schwendeman, James J Moon
Recent studies have shown that certain combinations of Toll-like receptor (TLR) agonists can induce synergistic immune activation. However, it remains challenging to achieve such robust responses in vivo in a manner that is effective, facile, and amenable for clinical translation. Here, we show that MPLA, a TLR4 agonist, and CpG, a TLR9 agonist, can be efficiently co-loaded into synthetic high-density lipoprotein nanodiscs, forming a potent adjuvant system (ND-MPLA/CpG) that can be readily combined with a variety of subunit antigens, including proteins and peptides...
July 28, 2018: Journal of Controlled Release: Official Journal of the Controlled Release Society
https://www.readbyqxmd.com/read/29699516/reduction-of-mhc-i-expression-limits-t-lymphocyte-mediated-killing-of-cancer-initiating-cells
#12
Brian J Morrison, Jason C Steel, John C Morris
BACKGROUND: It has been proposed that cancer establishment, maintenance, and recurrence may be attributed to a unique population of tumor cells termed cancer-initiating cells (CICs) that may include characteristics of putative cancer stem cell-like cells. Studies in lung cancer have shown that such cells can be enriched and propagated in vitro by culturing tumor cells in serum-free suspension as tumorspheres. CICs have been characterized for their phenotype, stem cell-like qualities, and their role in establishing tumor and maintaining tumor growth...
April 26, 2018: BMC Cancer
https://www.readbyqxmd.com/read/29652833/a-lipophilic-ir-780-dye-encapsulated-zwitterionic-polymer-lipid-micellar-nanoparticle-for-enhanced-photothermal-therapy-and-nir-based-fluorescence-imaging-in-a-cervical-tumor-mouse-model
#13
Santhosh Kalash Rajendrakumar, Ning-Chu Chang, Adityanarayan Mohapatra, Saji Uthaman, Byeong-Il Lee, Wei-Bor Tsai, In-Kyu Park
To prolong blood circulation and avoid the triggering of immune responses, nanoparticles in the bloodstream require conjugation with polyethylene glycol (PEG). However, PEGylation hinders the interaction between the nanoparticles and the tumor cells and therefore limits the applications of PEGylated nanoparticles for therapeutic drug delivery. To overcome this limitation, zwitterionic materials can be used to enhance the systemic blood circulation and tumor-specific delivery of hydrophobic agents such as IR-780 iodide dye for photothermal therapy...
April 13, 2018: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/29615034/multipulse-transcranial-electrical-stimulation-tes-normative-data-for-motor-evoked-potentials-in-healthy-horses
#14
Sanne Lotte Journée, Henricus Louis Journée, Cornelis Marinus de Bruijn, Cathérine John Ghislaine Delesalle
BACKGROUND: There are indications that transcranial electrical stimulation (TES) assesses the motor function of the spinal cord in horses in a more sensitive and reproducible fashion than transcranial magnetic stimulation (TMS). However, no normative data of TES evoked motor potentials (MEP) is available. RESULTS: In this prospective study normative data of TES induced MEP wave characteristics (motor latency times (MLT); amplitude and waveform) was obtained from the extensor carpi radialis (ECR) and tibial cranialis (TC) muscles in a group of healthy horses to create a reference frame for functional diagnostic purposes...
April 3, 2018: BMC Veterinary Research
https://www.readbyqxmd.com/read/29570629/constructing-tc-1-gluc-lmp2-model-tumor-cells-to-evaluate-the-anti-tumor-effects-of-lmp2-related-vaccines
#15
Liying Sun, Yanzhe Hao, Zhan Wang, Yi Zeng
Epstein-Barr virus (EBV) is related to a variety of malignant tumors, and its encoded protein, latent membrane protein 2 (LMP2), is an effective target antigen that is widely used to construct vector vaccines. However, the model cells carrying LMP2 have still not been established to assess the oncolytic effect of LMP2-related vaccines at present. In this study, TC-1-GLUC-LMP2 tumor cells were constructed as target cells to evaluate the anti-tumor effects of LMP2-assosiated vaccines. The results showed that both LMP2 and Gaussia luciferase ( GLuc ) genes could be detected by polymerase chain reaction (PCR) and reverse transcription-polymerase chain reaction (RT-PCR) in TC-1-GLUC-LMP2 cells...
March 23, 2018: Viruses
https://www.readbyqxmd.com/read/29564263/antiadhesive-and-cytotoxic-effect-of-iranian-vipera-lebetina-snake-venom-on-lung-epithelial-cancer-cells
#16
Akbar Oghalaie, Fatemeh Kazemi-Lomedasht, Mohammad Reza Zareinejad, Delavar Shahbazzadeh
Background: Cancer is one of the major health problems worldwide. Hence, finding potent therapeutics from natural sources seems necessary. Snake venom of Vipera lebetina contains potential component with anticancer activities such as antiproliferation, migration, invasion, adhesion, and angiogenesis effect. Evaluation of cytotoxic and antiadhesive effect of V. lebetina venom on lung epithelial cancer tumor cell (TC-1) was the main aim of this study. Materials and Methods: Here, we purified snake venom of V...
October 2017: Journal of Family Medicine and Primary Care
https://www.readbyqxmd.com/read/29550551/the-car-agonist-tcpobop-inhibits-lipogenesis-and-promotes-fibrosis-in-the-mammary-gland-of-adolescent-female-mice
#17
Pengfei Xu, Fan Hong, Jing Wang, Shu Dai, Jialin Wang, Yonggong Zhai
Constitutive androstane receptor (CAR) is a nuclear receptor that not only regulates drug-metabolizing enzymes but also influences energy metabolism. TC, 1, 4-bis [2-(3, 5-dichloropyridyloxy)] benzene (TCPOBOP) has been shown to inhibit lipogenesis in the liver and adipose tissues. The mammary gland is mainly composed of fat pads and duct systems in adolescent female mice. Here, activation of CAR by TC reduces the mammary gland weight, blocks lipid accumulation by inhibiting lipogenesis and gluconeogenesis, and accelerates collagen formation and fibrosis in the mammary fat pad of adolescent female mice...
June 15, 2018: Toxicology Letters
https://www.readbyqxmd.com/read/29540781/chemo-photothermal-therapy-combination-elicits-anti-tumor-immunity-against-advanced-metastatic-cancer
#18
Jutaek Nam, Sejin Son, Lukasz J Ochyl, Rui Kuai, Anna Schwendeman, James J Moon
Photothermal therapy (PTT) is a promising cancer treatment modality, but PTT generally requires direct access to the source of light irradiation, thus precluding its utility against disseminated, metastatic tumors. Here, we demonstrate that PTT combined with chemotherapy can trigger potent anti-tumor immunity against disseminated tumors. Specifically, we have developed polydopamine-coated spiky gold nanoparticles as a new photothermal agent with extensive photothermal stability and efficiency. Strikingly, a single round of PTT combined with a sub-therapeutic dose of doxorubicin can elicit robust anti-tumor immune responses and eliminate local as well as untreated, distant tumors in >85% of animals bearing CT26 colon carcinoma...
March 14, 2018: Nature Communications
https://www.readbyqxmd.com/read/29532687/delivery-of-vinblastine-containing-niosomes-results-in-potent-in-vitro-in-vivo-cytotoxicity-on-tumor-cells
#19
Boshra Amiri, Hasan Ahmadvand, Ali Farhadi, Aazam Najmafshar, Mohsen Chiani, Dariush Norouzian
Vinblastine (VB), as a chemotherapeutic agent, is widely used in treatment of different types of cancer. However, its clinical application is limited due to its low water solubility, side effects, and multidrug resistance. The aim of this study was to increase the therapeutic efficacy of VB using drug delivery systems. For this purpose, a PEGylated niosomal formulation of vinblastine (Pn-VB) was prepared by thin film hydration method and physicochemically characterized. Drug release pattern was performed by dialysis diffusion method...
August 2018: Drug Development and Industrial Pharmacy
https://www.readbyqxmd.com/read/29525270/evaluation-of-murine-lung-epithelial-cells-tc-1-jhu-1-line-to-develop-th2-promoting-cytokines-il-25-il-33-tslp-and-genes-tlr2-tlr4-in-response-to-aspergillus-fumigatus
#20
A R Khosravi, H Shokri, S Hassan Al-Heidary, F Ghafarifar
OBJECTIVE: The aims of this study were to determine the role of live and heat-killed Aspergillus fumigatus conidia in releasing interleukin (IL)-25, IL-33 and thymic stromal lymphopoietin (TSLP) and to express Toll-like receptor (Tlr)2 and Tlr4 genes. MATERIALS AND METHODS: Murine lung epithelial cells were incubated with live and heat-killed A. fumigatus conidia at 37°C for 6, 24 and 48h. After treatments, ELISA was performed to measure the concentrations of IL-25, IL-33 and TSLP in the supernatants...
June 2018: Journal de Mycologie Médicale
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