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Cellular Therapy

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https://www.readbyqxmd.com/read/29342359/semiconducting-photothermal-nanoagonist-for-remote-controlled-specific-cancer-therapy
#1
Xu Zhen, Chen Xie, Yuyan Jiang, Xiangzhao Ai, Bengang Xing, Kanyi Pu
Nanomedicines have shown success in cancer therapy, but the pharmacological actions of most nanomedicine are often nonspecific to cancer cells because of utilization of the therapeutic agents that induce cell apoptosis from inner organelles. We herein report the development of semiconducting photothermal nanoagonists that can remotely and specifically initiate the apoptosis of cancer cells from cell membrane. The organic nanoagonists comprise semiconducting polymer nanoparticles (SPNs) and capsaicin (Cap) as the photothermally-responsive nanocarrier and the agonist for activation of transient receptor potential cation channel subfamily V member 1 (TRPV1), respectively...
January 17, 2018: Nano Letters
https://www.readbyqxmd.com/read/29342309/prognostic-power-of-a-tumor-differentiation-gene-signature-for-bladder-urothelial-carcinomas
#2
Qianxing Mo, Fotis Nikolos, Fengju Chen, Zoe Tramel, Yu-Cheng Lee, Kazukuni Hayashi, Jing Xiao, Jianjun Shen, Keith Syson Chan
Background: Muscle-invasive bladder cancers (MIBCs) cause approximately 150 000 deaths per year worldwide. Survival for MIBC patients is heterogeneous, with no clinically validated molecular markers that predict clinical outcome. Non-MIBCs (NMIBCs) generally have favorable outcome; however, a portion progress to MIBC. Hence, development of a prognostic tool that can guide decision-making is crucial for improving clinical management of bladder urothelial carcinomas. Methods: Tumor grade is defined by pathologic evaluation of tumor cell differentiation, and it often associates with clinical outcome...
January 12, 2018: Journal of the National Cancer Institute
https://www.readbyqxmd.com/read/29342230/metformin-as-an-anti-cancer-agent-actions-and-mechanisms-targeting-cancer-stem-cells
#3
Nipun Saini, Xiaohe Yang
Metformin, a first line medication for type II diabetes, initially entered the spotlight as a promising anti-cancer agent due to epidemiologic reports that found reduced cancer risk and improved clinical outcomes in diabetic patients taking metformin. To uncover the anti-cancer mechanisms of metformin, preclinical studies determined that metformin impairs cellular metabolism and suppresses oncogenic signaling pathways, including receptor tyrosine kinase, PI3K/Akt, and mTOR pathways. Recently, the anti-cancer potential of metformin has gained increasing interest due to its inhibitory effects on cancer stem cells (CSCs), which are associated with tumor metastasis, drug resistance, and relapse...
October 7, 2017: Acta Biochimica et Biophysica Sinica
https://www.readbyqxmd.com/read/29341583/tumor-catalytic-photothermal-therapy-with-yolk-shell-gold-carbon-nanozymes
#4
Lei Fan, Xiangdong Xu, Chunhua Zhu, Jie Han, Lizeng Gao, Juqun Xi, Rong Guo
Nanozymes, as a new generation of artificial enzymes, offer great opportunities in biomedical engineering and disease treatment. Synergizing the multiple intrinsic functions of nanozymes can improve their performance in biological systems. Here, we report a novel nanozyme with yolk-shell structure fabricated by combining a single gold nanoparticle core with a porous hollow carbon shell nanospheres (Au@HCNs). Au@HCNs exhibited enzyme-like activities similar to horseradish peroxidase and oxidase under an acidic environment, showing the ability of ROS generation...
January 17, 2018: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/29341292/amniotic-fluid-stem-cell-exosomes-therapeutic-perspective
#5
Francesca Beretti, Manuela Zavatti, Francesca Casciaro, Giuseppina Comitini, Fabrizia Franchi, Veronica Barbieri, Giovanni B La Sala, Tullia Maraldi
It is widely accepted that the therapeutic potential of stem cells can be largely mediated by paracrine factors, also included into exosomes. Thus, stem cell-derived exosomes represent a major therapeutic option in regenerative medicine avoiding, if compared to stem cells graft, abnormal differentiation and tumor formation. Exosomes derived from mesenchymal stem cells (MSC) induce damaged tissue repair, and can also exert immunomodulatory effects on the differentiation, activation and function of different lymphocytes...
January 16, 2018: BioFactors
https://www.readbyqxmd.com/read/29341153/circulating-tumour-cells-and-dna-as-liquid-biopsies-in-gastrointestinal-cancer
#6
REVIEW
O Nordgård, K Tjensvoll, B Gilje, K Søreide
BACKGROUND: Blood is the most extensively studied body fluid and, because it contains circulating tumour cells (CTCs) and circulating tumour-derived cell-free DNA (ctDNA), it may represent a liquid biopsy for cancer. Methods for enrichment and detection of CTCs and ctDNA, their clinical applications and future opportunities in gastrointestinal cancers were the focus of this review. METHODS: The PubMed database was searched for literature up to 24 June 2017, with a focus on the past 10 years...
January 2018: British Journal of Surgery
https://www.readbyqxmd.com/read/29340025/the-novel-atm-inhibitor-az31-enhances-antitumor-activity-in-patient-derived-xenografts-that-are-resistant-to-irinotecan-monotherapy
#7
Justin Greene, Anna Nguyen, Stacey M Bagby, Gemma N Jones, W M Tai, Kevin S Quackenbush, Anna Schreiber, Wells A Messersmith, Kalpana M Devaraj, Patrick Blatchford, S Gail Eckhardt, Elaine B Cadogan, Gareth D Hughes, Aaron Smith, Todd M Pitts, John J Arcaroli
Irinotecan, a standard of care therapy for CRC, elicits cytotoxic effects by generating double strand breaks resulting in DNA damage. The activation of the ATM pathway plays a fundamental role in regulating the cellular response and repair to DNA damage. The objective of this preclinical study was to determine whether ATM inhibition would enhance sensitivity to irinotecan treatment. Treatment effects of AZ31, irinotecan or AZ31 + irinotecan were investigated in CRC cell lines and CRC patient derived xenografts...
December 19, 2017: Oncotarget
https://www.readbyqxmd.com/read/29339473/identification-of-thioredoxin-interacting-protein-txnip-as-a-downstream-target-for-igf1-action
#8
Karthik Nagaraj, Lena Lapkina-Gendler, Rive Sarfstein, David Gurwitz, Metsada Pasmanik-Chor, Zvi Laron, Shoshana Yakar, Haim Werner
Laron syndrome (LS), or primary growth hormone (GH) insensitivity, is the best-characterized entity among the congenital insulin-like growth factor 1 (IGF1) deficiencies. Life-long exposure to minute endogenous IGF1 levels is linked to low stature as well as a number of endocrine and metabolic abnormalities. While elevated IGF1 is correlated with increased cancer incidence, epidemiological studies revealed that patients with LS do not develop tumors. The mechanisms associated with cancer protection in LS are yet to be discovered...
January 16, 2018: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/29339377/robust-antitumor-responses-result-from-local-chemotherapy-and-ctla-4-blockade
#9
Charlotte E Ariyan, Mary Sue Brady, Robert H Siegelbaum, Jian Hu, Danielle M Bello, Jamie Green, Charles Fisher, Robert A Lefkowitz, Katherine S Panageas, Melissa Pulitzer, Marissa Vignali, Ryan Emerson, Christopher Tipton, Harlan Robins, Taha Merghoub, Jianda Yuan, Achim Jungbluth, Jorge Blando, Padmanee Sharma, Alexander Y Rudensky, Jedd D Wolchok, James P Allison
Clinical responses to immunotherapy have been associated with augmentation of preexisting immune responses, manifested by heightened inflammation in the tumor microenvironment. However, many tumors have a non-inflamed microenvironment, and response rates to immunotherapy in melanoma have been <50%. We approached this problem by utilizing immunotherapy (CTLA-4 blockade) combined with chemotherapy to induce local inflammation. In murine models of melanoma and prostate cancer, the combination of chemotherapy and CTLA-4 blockade induced a shift in the cellular composition of the tumor microenvironment, with infiltrating CD8+ and CD4+ T cells increasing the CD8/Foxp3 T-cell ratio...
January 16, 2018: Cancer Immunology Research
https://www.readbyqxmd.com/read/29339270/proceedings-from-the-fourth-haploidentical-stem-cell-transplantation-symposium-haplo2016-san-diego-california-december-1-2016
#10
REVIEW
Monzr Al Malki, Richard Jones, Qing Ma, Dean Lee, Yair Reisner, Jeffrey S Miller, Peter Lang, Suradej Hongeng, Parameswaran Hari, Samuel Strober, Jianhua Yu, Richard Maziarz, Domenico Mavilio, Denis-Claude Roy, Chiara Bonini, Richard E Champlin, Ephraim J Fuchs, Stefan O Ciurea
The resurgence of haploidentical stem cell transplantation (HaploSCT) over the last decade is one of the most important advances in the field of hematopoietic stem cell transplantation (HSCT). The modified platforms of T cell depletion either ex vivo (CD34+ selection, 'mega-dose' of purified CD34+ cells, or selective depletion of T-cells) or newer platforms of in vivo depletion of T cells, with either post-transplant high-dose cyclophosphamide (PTCy) or intensified immune suppression, have contributed to better outcomes, with survival that is similar to HLA-match donor transplantation...
January 12, 2018: Biology of Blood and Marrow Transplantation
https://www.readbyqxmd.com/read/29339213/nrp-2-in-tumor-lymphangiogenesis-and-lymphatic-metastasis
#11
Jingwen Wang, Yuhong Huang, Jun Zhang, Boyi Xing, Wei Xuan, Honghai Wang, He Huang, Jiayu Yang, Jianwu Tang
Neuropilin-2 (NRP-2) not only functions as a receptor for semaphorins, a family of neural axon guidance factors, but also interacts with VEGFs, a family of vascular endothelial growth factors. As an independent receptor or a co-receptor, NRP-2 binds to ligands VEGF-C/D, activates the VEGF-C/D-NRP-2 signaling axis, and further regulates lymphangiogenesis-associated factors in both lymphatic endothelial cells (LECs) and some tumor cells during tumor progression. Via VEGF-C/D-NRP-2 axis, NRP-2 induces LEC proliferation, reconstruction and lymphangiogenesis and subsequently promotes tumor cell migration, invasion and lymphatic metastasis...
January 12, 2018: Cancer Letters
https://www.readbyqxmd.com/read/29339161/a-new-genetically-engineered-mouse-model-of-choroid-plexus-carcinoma
#12
Salsabiel El Nagar, Frederique Zindy, Charlotte Moens, Luc Martin, Damien Plassard, Martine F Roussel, Thomas Lamonerie, Nathalie Billon
Choroid plexus carcinomas (CPCs) are highly malignant brain tumours predominantly found in children and associated to poor prognosis. Improved therapy for these cancers would benefit from the generation of animal models. Here we have created a novel mouse CPC model by expressing a stabilised form of c-Myc (MycT58A) and inactivating Trp53 in the choroid plexus of newborn mice. This induced aberrant proliferation of choroid plexus epithelial cells, leading to aggressive tumour development and death within 150 days...
January 12, 2018: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/29339144/addressing-barriers-to-effective-cancer-immunotherapy-with-nanotechnology-achievements-challenges-and-roadmap-to-the-next-generation-of-nanoimmunotherapeutics
#13
Enping Hong, Marina A Dobrovolskaia
Cancer is a complex systemic disorder that affects many organs and tissues and arises from the altered function of multiple cellular and molecular mechanisms. One of the systems malfunctioning in cancer is the immune system. Restoring and improving the ability of the immune system to effectively recognize and eradicate cancer is the main focus of immunotherapy, a topic which has garnered recent and significant interest. The initial excitement about immunotherapy, however, has been challenged by its limited efficacy in certain patient populations and the development of adverse effects such as therapeutic resistance and autoimmunity...
January 12, 2018: Advanced Drug Delivery Reviews
https://www.readbyqxmd.com/read/29339061/dose-dependent-photochemical-photothermal-toxicity-of-indocyanine-green-based-therapy-on-three-different-cancer-cell-lines
#14
Mustafa Kemal Ruhi, Ayşe Ak Can, Murat Gülsoy
The Food and Drug Administration-approved Indocyanine Green can be used as a photosensitizer to kill cancer cells selectively. Although indocyanine green is advantageous as a photosensitizer in terms of strong absorption in the near-infrared region, indocyanine green-based cancer treatment is still not approved as a clinical method. Some reasons for this are aggregation at high concentrations, rapid clearance of the photosensitizer from the body, low singlet oxygen quantum yield, and the uncertainty concerning its action mechanism...
January 12, 2018: Photodiagnosis and Photodynamic Therapy
https://www.readbyqxmd.com/read/29338744/new-insights-in-the-relative-radiobiological-effectiveness-of-proton-irradiation
#15
REVIEW
K Ilicic, S E Combs, T E Schmid
BACKGROUND: Proton radiotherapy is a form of charged particle therapy that is preferentially applied for the treatment of tumors positioned near to critical structures due to their physical characteristics, showing an inverted depth-dose profile. The sparing of normal tissue has additional advantages in the treatment of pediatric patients, in whom the risk of secondary cancers and late morbidity is significantly higher. Up to date, a fixed relative biological effectiveness (RBE) of 1...
January 16, 2018: Radiation Oncology
https://www.readbyqxmd.com/read/29338468/inhibition-of-the-proteasome-activity-by-graphene-oxide-contributes-to-its-cytotoxicity
#16
Xiaochuan Ma, Sangyun Lee, Xingshu Fei, Ge Fang, Tien Huynh, Yu Chong, Zhifang Chai, Cuicui Ge, Ruhong Zhou
Due to its hydrophobicity and other unique physicochemical properties, graphene oxide (GO) has been extensively utilized in various biological applications. However, introducing nanomaterials into the biological environment may raise serious risk in terms of nanotoxicity, leading to some unintended changes to the structure and the function of other biomolecules. This study investigates the interaction of GO with the ubiquitin-proteasome system, one of the essential machineries in the cellular metabolism, using a combination of experimental and computational approaches...
January 16, 2018: Nanotoxicology
https://www.readbyqxmd.com/read/29337533/localized-fe-ii-induced-cytotoxic-reactive-oxygen-species-generating-nano-system-for-enhanced-anticancer-therapy
#17
Yuxue Ding, Jiaxun Wan, Zihao Zhang, Fang Wang, Jia Guo, Changchun Wang
The anticancer therapy on basis of reactive oxygen species (ROS)-mediated cellular apoptosis has achieved great progress. However, this kind of theraputic strategy still faces some challenges such as light, photosensitizer and oxygen (O2) dependence. In this article, a ROS-mediated anticancer therapy independent of light, photosensitizer and oxygen was established based on a Fe2+-induced ROS-generating nano-system. First, artemisinin (ART) was loaded in porous magnetic supraparticles (MSP) by a nano-deposition method...
January 16, 2018: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/29337531/a-branched-glycerol-based-copolymer-with-ultrahigh-p65-sirna-delivery-efficiency-for-enhanced-cancer-therapy
#18
Li Zhou, Xiaoyan Qu, Yi Guo, Min Wang, Bo Lei, Peter X Ma
The small interfering RNA (siRNA) is emerging as a potential therapeutic for the treatment of various diseases, because of the targeted gene silencing capability. The suppression of p65 expression has shown great potential in various cancer treatments. However, various substantial obstacles limit their clinical applications, including low cellular uptake, instability and cytotoxicity of delivery vehicles. We show a highly branched and biocompatible glycerol-based copolymer (HBGCs) to effectively deliver siRNA for excellent p65 gene silencing and safe lung cancer treatment in vitro and in vivo...
January 16, 2018: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/29337187/metabolomics-reveals-that-dietary-xenoestrogens-alter-cellular-metabolism-induced-by-palbociclib-letrozole-combination-cancer-therapy
#19
Benedikt Warth, Philipp Raffeiner, Ana Granados, Tao Huan, Mingliang Fang, Erica M Forsberg, H Paul Benton, Laura Goetz, Caroline H Johnson, Gary Siuzdak
Recently, the palbociclib/letrozole combination therapy was granted accelerated US FDA approval for the treatment of estrogen receptor (ER)-positive breast cancer. Since the underlying metabolic effects of these drugs are yet unknown, we investigated their synergism at the metabolome level in MCF-7 cells. As xenoestrogens interact with the ER, we additionally aimed at deciphering the impact of the phytoestrogen genistein and the estrogenic mycotoxin zearalenone. A global metabolomics approach was applied to unravel metabolite and pathway modifications...
January 10, 2018: Cell Chemical Biology
https://www.readbyqxmd.com/read/29337120/deriving-dorsal-spinal-sensory-interneurons-from-human-pluripotent-stem%C3%A2-cells
#20
Sandeep Gupta, Daniel Sivalingam, Samantha Hain, Christian Makkar, Enrique Sosa, Amander Clark, Samantha J Butler
Cellular replacement therapies for neurological conditions use human embryonic stem cell (hESC)- or induced pluripotent stem cell (hiPSC)-derived neurons to replace damaged or diseased populations of neurons. For the spinal cord, significant progress has been made generating the in-vitro-derived motor neurons required to restore coordinated movement. However, there is as yet no protocol to generate in-vitro-derived sensory interneurons (INs), which permit perception of the environment. Here, we report on the development of a directed differentiation protocol to derive sensory INs for both hESCs and hiPSCs...
January 9, 2018: Stem Cell Reports
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