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Cancer biomaterials

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https://www.readbyqxmd.com/read/28776612/overcoming-t-gondii-infection-and-intracellular-protein-nanocapsules-as-biomaterials-for-ultrasonically-controlled-drug-release
#1
REVIEW
M S Aw, L Paniwnyk
One of the pivotal matters of concern in intracellular drug delivery is the preparation of biomaterials containing drugs that are compatible with the host target. Nanocapsules for oral delivery are found to be suitable candidates for targeting Toxoplasma gondii (T. gondii), a maneuvering and smart protozoic parasite found across Europe and America that causes a subtle but deadly infection. To overcome this disease, there is much potential of integrating protein-based cells into bioinspired nanocompartments such as via biodegradable cross-linked disulfide polyelectrolyte nanoparticles...
August 4, 2017: Biomaterials Science
https://www.readbyqxmd.com/read/28760796/past-speculations-of-future-health-technologies-a-description-of-technologies-predicted-in-15-forecasting-studies-published-between-1986-and-2010
#2
Lucy Doos, Claire Packer, Derek Ward, Sue Simpson, Andrew Stevens
OBJECTIVE: To describe and classify health technologies predicted in forecasting studies. DESIGN AND METHODS: A portrait describing health technologies predicted in 15 forecasting studies published between 1986 and 2010 that were identified in a previous systematic review. Health technologies are classified according to their type, purpose and clinical use; relating these to the original purpose and timing of the forecasting studies. DATA SOURCES: All health-related technologies predicted in 15 forecasting studies identified in a previously published systematic review...
July 31, 2017: BMJ Open
https://www.readbyqxmd.com/read/28756194/red-blood-cell-membrane-camouflaged-melanin-nanoparticles-for-enhanced-photothermal-therapy
#3
Qin Jiang, Zimiao Luo, Yongzhi Men, Peng Yang, Haibao Peng, Ranran Guo, Ye Tian, Zhiqing Pang, Wuli Yang
Photothermal therapy (PTT) has represented a promising noninvasive approach for cancer treatment in recent years. However, there still remain challenges in developing non-toxic and biodegradable biomaterials with high photothermal efficiency in vivo. Herein, we explored natural melanin nanoparticles extracted from living cuttlefish as effective photothermal agents and developed red blood cell (RBC) membrane-camouflaged melanin (Melanin@RBC) nanoparticles as a platform for in vivo antitumor PTT. The as-obtained natural melanin nanoparticles demonstrated strong absorption at NIR region, higher photothermal conversion efficiency (∼40%) than synthesized melanin-like polydopamine nanoparticles (∼29%), as well as favorable biocompatibility and biodegradability...
July 20, 2017: Biomaterials
https://www.readbyqxmd.com/read/28745767/phosphorus-dendrimers-for-nanomedicine
#4
Anne-Marie Caminade
From biomaterials to imaging, and from drug delivery to drugs by themselves, phosphorus-containing dendrimers offer a large palette of biological properties, depending essentially on their types of terminal functions. The most salient examples of phosphorus dendrimers used for the elaboration of bio-chips and of supports for cell cultures, for imaging biological events, and for carrying and delivering drugs or biomacromolecules are presented in this feature article. Several phosphorus dendrimers can be considered also as drugs per se (by themselves) in particular to fight against cancers, neurodegenerative diseases, and inflammation, both in vitro and in vivo...
July 26, 2017: Chemical Communications: Chem Comm
https://www.readbyqxmd.com/read/28715636/backbone-engineered-%C3%AE-peptide-amphitropic-gels-for-immobilization-of-semiconductor-quantum-dots-and-2d-cell-culture
#5
Rajkumar Misra, Aman Sharma, Anjali Shiras, Hosahudya N Gopi
We are reporting a spontaneous supramolecular assembly of backbone engineered γ-peptide scaffold and its utility in the immobilization of semiconductor quantum dots and in cell culture. The stimulating feature of this γ-peptide scaffold is that it efficiently gelates both aqueous phosphate buffers and aromatic organic solvents. A comparative and systematic investigation reveals that the greater spontaneous self-aggregation property of γ-peptide over the α- and β-peptide analogues is mainly due to the backbone flexibility, increased hydrophobicity, and π-π stacking of γ-phenylalanine residues...
July 30, 2017: Langmuir: the ACS Journal of Surfaces and Colloids
https://www.readbyqxmd.com/read/28714303/melittin-containing-hybrid-peptide-hydrogels-for-enhanced-photothermal-therapy-of-glioblastoma
#6
Honglin Jin, Guifang Zhao, Jianli Hu, Quanguang Ren, Kui Yang, Chao Wan, Ai Huang, Pindong Li, Jue-Ping Feng, Jing Chen, Zhenwei Zou
The design of biocompatible and efficacious anticancer biomaterials to achieve relatively low tumor recurrence rates is the main pursuit of cancer photothermal therapy (PTT). RADA16-I is a synthetic amphiphilic peptide with the sequence RADARADARADARADA that can self-assemble into a peptide nanofiber hydrogel. In this study, we synthesized a novel melittin-RADA32-indocyanine green (ICG) hydrogel ("MRI hydrogel"), which contains melittin in the peptide hydrogel backbone and ICG in the hydrogel matrix, for enhanced PTT of glioblastomas...
August 9, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28694238/functionalized-bioengineered-spider-silk-spheres-improve-nuclease-resistance-and-activity-of-oligonucleotide-therapeutics-providing-a-strategy-for-cancer-treatment
#7
Anna Karolina Kozlowska, Anna Florczak, Maciej Smialek, Ewelina Dondajewska, Andrzej Mackiewicz, Marcin Kortylewski, Hanna Dams-Kozlowska
Cell-selective delivery and sensitivity to serum nucleases remain major hurdles to the clinical application of RNA-based oligonucleotide therapeutics, such as siRNA. Spider silk shows great potential as a biomaterial due to its biocompatibility and biodegradability. Self-assembling properties of silk proteins allow for processing into several different morphologies such as fibers, scaffolds, films, hydrogels, capsules and spheres. Moreover, bioengineering of spider silk protein sequences can functionalize silk by adding peptide moieties with specific features including binding or cell recognition domains...
September 1, 2017: Acta Biomaterialia
https://www.readbyqxmd.com/read/28691384/vaginectomy-and-vaginoplasty-for-isolated-vaginal-recurrence-8%C3%A2-years-after-cervical-cancer-radical-hysterectomy-a-case-report-and-literature-review
#8
Yanying Lin, Jingyi Zhou, Lin Dai, Yuan Cheng, Jianliu Wang
A subgroup of early-stage cervical cancer patients suffer from vaginal cuff recurrence following a primary surgery; however, recurrence after a disease-free interval of 5 years is rare. Treatments for isolated vaginal relapse remain controversial. Here we report a case of a 50-year-old woman with isolated vaginal cuff recurrence 8 years after primary radical surgery for cervical cancer. We conducted a vaginectomy and vaginoplasty using a type of tissue-engineered biomaterial graft. Three chemotherapy cycles of paclitaxel and cisplatin were administered after surgery...
July 10, 2017: Journal of Obstetrics and Gynaecology Research
https://www.readbyqxmd.com/read/28679607/the-instructive-extracellular-matrix-of-the-lung-basic-composition-and-alterations-in-chronic-lung-disease
#9
Gerald Burgstaller, Bettina Oehrle, Michael Gerckens, Eric S White, Herbert B Schiller, Oliver Eickelberg
The pulmonary extracellular matrix (ECM) determines the tissue architecture of the lung, and provides mechanical stability and elastic recoil, which are essential for physiological lung function. Biochemical and biomechanical signals initiated by the ECM direct cellular function and differentiation, and thus play a decisive role in lung development, tissue remodelling processes and maintenance of adult homeostasis. Recent proteomic studies have demonstrated that at least 150 different ECM proteins, glycosaminoglycans and modifying enzymes are expressed in the lung, and these assemble into intricate composite biomaterials...
July 2017: European Respiratory Journal: Official Journal of the European Society for Clinical Respiratory Physiology
https://www.readbyqxmd.com/read/28663555/three-dimensional-spheroid-culture-targeting-versatile-tissue-bioassays-using-a-pdms-based-hanging-drop-array
#10
Ching-Te Kuo, Jong-Yueh Wang, Yu-Fen Lin, Andrew M Wo, Benjamin P C Chen, Hsinyu Lee
Biomaterial-based tissue culture platforms have emerged as useful tools to mimic in vivo physiological microenvironments in experimental cell biology and clinical studies. We describe herein a three-dimensional (3D) tissue culture platform using a polydimethylsiloxane (PDMS)-based hanging drop array (PDMS-HDA) methodology. Multicellular spheroids can be achieved within 24 h and further boosted by incorporating collagen fibrils in PDMS-HDA. In addition, the spheroids generated from different human tumor cells exhibited distinct sensitivities toward drug chemotherapeutic agents and radiation as compared with two-dimensional (2D) cultures that often lack in vivo-like biological insights...
June 29, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28650030/carbon-nanoscroll-silk-crystallite-hybrid-structures-with-controllable-hydration-and-mechanical-properties
#11
Yuan Cheng, Leng-Duei Koh, Fan Wang, Dechang Li, Baohua Ji, Jingjie Yeo, Guijian Guan, Ming-Yong Han, Yong-Wei Zhang
Hybrid structures of nanomaterials (e.g. tubes, scrolls, threads, cages) and biomaterials (e.g. proteins) hold tremendous potential for applications as drug carriers, biosensors, tissue scaffolds, cancer therapeutic agents, etc. However, in many cases, the interacting forces at the nano-bio interfaces and their roles in controlling the structures and dynamics of nano-bio-hybrid systems are very complicated but poorly understood. In this study, we investigate the structure and mechanical behavior of a protein-based hybrid structure, i...
July 6, 2017: Nanoscale
https://www.readbyqxmd.com/read/28649015/on-command-on-off-switching-of-progenitor-cell-and-cancer-cell-polarized-motility-and-aligned-morphology-via-a-cytocompatible-shape-memory-polymer-scaffold
#12
Jing Wang, Andy Quach, Megan E Brasch, Christopher E Turner, James H Henderson
In vitro biomaterial models have enabled advances in understanding the role of extracellular matrix (ECM) architecture in the control of cell motility and polarity. Most models are, however, static and cannot mimic dynamic aspects of in vivo ECM remodeling and function. To address this limitation, we present an electrospun shape memory polymer scaffold that can change fiber alignment on command under cytocompatible conditions. Cellular response was studied using the human fibrosarcoma cell line HT-1080 and the murine mesenchymal stem cell line C3H/10T1/2...
September 2017: Biomaterials
https://www.readbyqxmd.com/read/28637915/tumour-on-a-chip-microfluidic-models-of-tumour-morphology-growth-and-microenvironment
#13
REVIEW
Hsieh-Fu Tsai, Alen Trubelja, Amy Q Shen, Gang Bao
Cancer remains one of the leading causes of death, albeit enormous efforts to cure the disease. To overcome the major challenges in cancer therapy, we need to have a better understanding of the tumour microenvironment (TME), as well as a more effective means to screen anti-cancer drug leads; both can be achieved using advanced technologies, including the emerging tumour-on-a-chip technology. Here, we review the recent development of the tumour-on-a-chip technology, which integrates microfluidics, microfabrication, tissue engineering and biomaterials research, and offers new opportunities for building and applying functional three-dimensional in vitro human tumour models for oncology research, immunotherapy studies and drug screening...
June 2017: Journal of the Royal Society, Interface
https://www.readbyqxmd.com/read/28631533/u-can-a-prospective-longitudinal-collection-of-biomaterials-and-clinical-information-from-adult-cancer-patients-in-sweden
#14
Bengt Glimelius, Beatrice Melin, Gunilla Enblad, Irina Alafuzoff, Anna Beskow, Håkan Ahlström, Anna Bill-Axelson, Helgi Birgisson, Ove Björ, Per-Henrik Edqvist, Tony Hansson, Thomas Helleday, Per Hellman, Kerstin Henriksson, Göran Hesselager, Magnus Hultdin, Michael Häggman, Martin Höglund, Håkan Jonsson, Chatarina Larsson, Henrik Lindman, Ingrid Ljuslinder, Stephanie Mindus, Peter Nygren, Fredrik Pontén, Katrine Riklund, Richard Rosenquist, Fredrik Sandin, Jochen M Schwenk, Roger Stenling, Karin Stålberg, Peter Stålberg, Christer Sundström, Camilla Thellenberg Karlsson, Bengt Westermark, Anders Bergh, Lena Claesson-Welsh, Richard Palmqvist, Tobias Sjöblom
BACKGROUND: Progress in cancer biomarker discovery is dependent on access to high-quality biological materials and high-resolution clinical data from the same cases. To overcome current limitations, a systematic prospective longitudinal sampling of multidisciplinary clinical data, blood and tissue from cancer patients was therefore initiated in 2010 by Uppsala and Umeå Universities and involving their corresponding University Hospitals, which are referral centers for one third of the Swedish population...
June 20, 2017: Acta Oncologica
https://www.readbyqxmd.com/read/28629381/the-era-of-bioengineering-how-will-this-affect-the-next-generation-of-cancer-immunotherapy
#15
REVIEW
Michele Graciotti, Cristiana Berti, Harm-Anton Klok, Lana Kandalaft
BACKGROUND: Immunotherapy consists of activating the patient's immune system to fight cancer and has the great potential of preventing future relapses thanks to immunological memory. A great variety of strategies have emerged to harness the immune system against tumors, from the administration of immunomodulatory agents that activate immune cells, to therapeutic vaccines or infusion of previously activated cancer-specific T cells. However, despite great recent progress many difficulties still remain, which prevent the widespread use of immunotherapy...
June 19, 2017: Journal of Translational Medicine
https://www.readbyqxmd.com/read/28629092/binary-functional-porous-multi-mineral-substituted-apatite-nanoparticles-for-reducing-osteosarcoma-colonization-and-enhancing-osteoblast-cell-proliferation
#16
Dharman Govindaraj, Chandramohan Govindasamy, Mariappan Rajan
We investigated the use of combined nanoparticles in bone replacement for patients with bone cancer. Bismuth (Bi) is known to have antitumor effects, and the inclusion of Bi in bioactive mineral (M)-substituted hydroxyapatite (M-HAP) may provide anti-cancer properties implant resources. A series of Bi-substituted M-HAP (Bi-M-HAP) nanoparticles with various Bi concentrations was synthesized via the ultrasound irradiation method. The nanoparticles were examined using physicochemical strategies. The cell-substance interface of the nanoparticles was observed in vitro with human osteosarcoma cells and cell multiplication was measured at 1, 3, and 7days of incubation and in vivo in rats after 3weeks of implantation...
October 1, 2017: Materials Science & Engineering. C, Materials for Biological Applications
https://www.readbyqxmd.com/read/28628010/-the-main-stages-of-the-preparation-of-viable-tumor-cells-of-bladder-cancer-from-isolation-of-the-tumor-material-till-cryopreservation-of-cell-lines
#17
T Slavyanskaya, S -Salnikova
The development of personalized autologous dendritic cell anti-tumor vaccines (PDPW) against bladder cancer (BC) is a relevant issue that covers many aspects required for its standardization. The article presents personal experimental studies related to development of optimal conditions of transportation of biological material; temperature and temporary modes for the storage of the samples; the materials about the optimal method of disaggregation of the biomaterial; there has been shown a comparative analysis of different methods of tumor disaggregation; the selection of nutritious growth mediums and growth factors for urothelial carcinoma cells (UCC), the conditions of cryopreservation of tumor cells for maximum UCC viability, potentially suitable for creating PDPW against BC...
May 2017: Georgian Medical News
https://www.readbyqxmd.com/read/28600130/highly-antibacterial-polypeptide-based-amphiphilic-copolymers-as-multifunctional-non-viral-vectors-for-enhanced-intracellular-sirna-delivery-and-anti-infection
#18
Li Zhou, Yuewei Xi, Meng Yu, Min Wang, Yi Guo, Peng Li, Peter X Ma, Bo Lei
For next-generation regenerative medicine and cancer therapy applications, the development of multifunctional biodegradable biomaterials with good antibacterial activity, biocompatibility and gene delivery capability is showing increased interests. As a natural cationic polypeptide, poly(ε-l-lysine) (EPL) has been as attractive antibacterial agent and non-viral gene vectors, however, its gene therapy is still limited probably due to the cytotoxicity, low stability in physiological environment and poor transfection efficiency...
June 7, 2017: Acta Biomaterialia
https://www.readbyqxmd.com/read/28576066/designing-of-macroporous-magnetic-bioscaffold-based-on-functionalized-methacrylate-network-covered-by-hydroxyapatites-and-doped-with-nano-mgfe2o4-for-potential-cancer-hyperthermia-therapy
#19
Łukasz John, Mateusz Janeta, Sławomir Szafert
In this paper, we report on synthesis and characterization of three-dimensional biocomposite based on a polymerized 3-(trimethoxysilyl)propyl methacrylate/ethylene glycol dimethacrylate (pTMSPMA/pEGDMA) framework. The resulting composite was doped with Ca(2+) and PO4(3-) or decorated by hydroxyapatite (HA) and carbonate hydroxyapatite (CHA) to aid potential bone fixation and the in vitro bioactivity was evaluated. During the construction of the macroporous scaffold, the size and shape of pores were modified depending on the type of porogens which was applied (commercially available sugar, NaCl, or NH4Cl)...
September 1, 2017: Materials Science & Engineering. C, Materials for Biological Applications
https://www.readbyqxmd.com/read/28576022/a-biomimetic-au-bsa-dta-nanocomposites-based-contrast-agent-for-computed-tomography-imaging
#20
Wenjing Zhao, Zhiming Wang, Lina Chen, Chusen Huang, Yuankui Huang, Nengqin Jia
Early detection of cancer is increasingly important for being considered to increase the survival rate in the treatment process. The past decades years have witnessed the great progress in the biological detection application of gold nanoparticles. Herein, we reported a facile one-pot synthesis process to obtain gold nanoparticles (Au@BSA) with bovine serum albumin (BSA) as a biotemplate following with conjugation of diatrizoic acid (DTA) for a potential X-ray computed tomography (CT) imaging contrast agent (Au@BSA-DTA)...
September 1, 2017: Materials Science & Engineering. C, Materials for Biological Applications
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