Surface Modification of Magnetite Nanoparticles with Doxorubicin and RGD Peptide and their Biomedical Application

2007 ◽  
Vol 342-343 ◽  
pp. 793-796 ◽  
Author(s):  
K.M. Kamruzzaman Selim ◽  
Mi Jin Park ◽  
Hong Mi Kim ◽  
Inn Kyu Kang
Keyword(s):  
Magnetite Nanoparticles ◽  
Tumor Targeting ◽  
Biomedical Application ◽  
Rgd Peptide ◽  
Intracellular Uptake ◽  
Culture Experiment ◽  
Targeting Delivery ◽  
Surface Modified ◽  
Targeting Effect ◽  
Cell Culture Experiment

In the present study, superparamagnetic maltotrionic acid-coated magnetite nanoparticles (MAM) were surface modified with doxorubicin (DOX) and RGD peptide to improve their intracellular uptake, ability to target tumor cells and antitumer effect. RGD was added to the distal end of MAM aiming to construct an enhanced tumor targeting delivery system. To test its targeting effect, DOX, a widely used anticancer drug, was immobilized on the RGD-modified magnetite nanoparticles. DOX-coated magnetite nanoparticles were also prepared as a control. KB cell culture experiment showed that both DOX-modified nanoparticles and DOX-RGD peptide-modified magnetite nanoparticles (DRMAM) were internalized into the cells. But the uptake amount of DRMAMs was higher than that of DOX-modified nanoparticles. This result indicates that DRMAMs have a great potential to be used as contrast agent and antitumor medicine.

scholarly journals Enhanced Intracellular Uptake of CdTe Quantum Dots by Conjugation of Oligopeptides

2013 ◽  
Vol 2013 ◽  
pp. 1-8 ◽  
Author(s):  
Moon-Jeong Choi ◽  
R. Pierson ◽  
Yongmin Chang ◽  
Haiquing Guo ◽  
Inn-Kyu Kang
Keyword(s):  
Quantum Dots ◽  
Intracellular Uptake ◽  
3T3 Cells ◽  
Culture Experiment ◽  
Mean Size ◽  
Cdte Quantum Dot ◽  
Nih 3T3 ◽  
Cell Culture Experiment ◽  
Nih 3T3 Cells

Arg-Gly-Asp-Ser (RGDS), a typical membrane-permeable carrier peptide, was conjugated with mercaptoisobutyric acid-immobilized CdTe quantum dot (CTNPs) to enhance the intracellular uptake of quantum dots. Mean size of mercaptoisobutyric acid-immobilized quantum dots (37 nm) as determined by dynamic light scattering was increased up to 54 nm after RGDS immobilization. It was found, fromin vitrocell culture experiment, that fibroblast (NIH 3T3) cells were well proliferated in the presence of RGDS-conjugated quantum dots (RCTNPs), and the intracellular uptake of CTNPs and RCTNPs was studied by means of ICP and fluorescence microscopy. As a result, the RCTNPs specifically bound to the membrane of NIH 3T3 cells and almost saturated after 6 hours incubation. The amount of RCTNPs uptaken by the cells was higher than that of CTNPs, demonstrating the enhancing effect of RGDS peptide conjugation on the intracellular uptake of quantum dots (QDs).

scholarly journals New Zr-Ti-Nb Alloy for Medical Application: Development, Chemical and Mechanical Properties, and Biocompatibility

Materials ◽  
2020 ◽  
Vol 13 (6) ◽  
pp. 1306 ◽  
Author(s):  
Oleg Mishchenko ◽  
Oleksandr Ovchynnykov ◽  
Oleksii Kapustian ◽  
Maksym Pogorielov
Keyword(s):  
Mechanical Properties ◽  
Cell Culture ◽  
Biomedical Application ◽  
Young Modulus ◽  
Commercial Application ◽  
Mechanical Parameters ◽  
Culture Experiment ◽  
Ti Alloys ◽  
Master Alloys ◽  
Cell Culture Experiment

The concept of mechanical biocompatibilities is considered an important factor for orthopedics and dental implants. The high Young modulus of traditional Ti-based alloys can lead to stress-shielding syndrome and late postoperative complications. The development of new Al- and V-free Ti alloys with a low elastic modulus is a critical task for implantology. Despite the relatively low Young modulus and appropriate biological response of metastable beta-Ti alloys, their production requires complex metallurgical solutions and a high final cost that limit commercial application. The current research aimed to develop a Zr-Ti-Nb system with a low Young modulus suitable for biomedical application, including orthopedics and dental implantology. Two different charges were used for new alloy production with melting in a vacuum-arc furnace VDP-1 under atmospheric control (argon + helium) with a non-consumable tungsten electrode and a water-cooled copper crystallizer. Post-treatment included a forging-rolling process to produce a bar suitable for implant production. SEM with EDX and the mechanical parameters of the new alloy were evaluated, and a cell culture experiment provided a biocompatibility assessment. The chemical composition of the new alloy can be represented as 59.57-19.02-21.41 mass% of Zr-Ti-Nb. The mechanical properties are characterized by an extremely low Young modulus—27,27 GPa for the alloy and 34.85 GPa for the bar. The different master alloys used for Zr-Ti-Nb production did not affect the chemical compound and mechanical parameters so it was possible to use affordable raw materials to decrease the final price of the new product. The cell culture experiment demonstrated a full biocompatibility, indicating that this new alloy can be used for dental and orthopedics implant production.

The role of ER stress for the pathogenesis of SCA3 in primary cell culture experiment

2007 ◽  
Vol 34 (S 2) ◽  
Author(s):  
C Funke ◽  
J Hübener ◽  
H Wolburg ◽  
T Schmidt ◽  
H Toresson ◽  
...  
Keyword(s):  
Cell Culture ◽  
Er Stress ◽  
Primary Cell Culture ◽  
Primary Cell ◽  
Culture Experiment ◽  
Cell Culture Experiment

Surface Modified Nanoparticulate Carriers for the Targeted Treatment of Breast Cancer

2015 ◽  
Vol 8 (1) ◽  
pp. 2698-2714
Author(s):  
Neeraj Mishra ◽  
Tejinder Singh ◽  
Nidhi ◽  
Supandeep Singh Hallan ◽  
Veerpal Kaur
Keyword(s):  
Breast Cancer ◽  
Tumor Targeting ◽  
Lipid Nanoparticles ◽  
Targeted Treatment ◽  
Therapeutic Effects ◽  
Target Drug Delivery ◽  
Target Drug ◽  
Therapeutic Outcomes ◽  
Lipid Nanocarriers ◽  
Surface Modified

Breast cancer left overs one of the greatest common metastasis disease in females. Advanced diagnostic devices and better understanding of tumour biology can extend the better therapeutic outcomes. Nanotechnology is a tool that helps in cancer diagnosis and treatment therapy. Many nanocarriers such as solid lipid nanoparticles, magnetic nanoparticles, nanocrystals, nanogels, nano-lipid nanocarriers, biodegradable nanoparticles, liposomes, and dendrimers are introduced to improve the therapeutic efficacy of antineoplastic agents. Surface modified target drug delivery system has the potential to increase the therapeutic effects and also reduce the cytotoxicity of breast cancer. Different approaches have been explored for treatment of breast cancer. This review describes the recent advances in the development of nanocarriers used for the targeted treatment of breast cancer. It also focuses on etiology, risk factor and conventional therapy of breast cancer. KEYWORDS: Breast Cancer; Nano-carriers; Tumor Targeting; Ligands; Receptor.

scholarly journals Lipoprotein-Inspired Nanocarrier Composed of Folic Acid-Modified Protein and Lipids: Preparation and Evaluation of Tumor-Targeting Effect

2020 ◽  
Vol Volume 15 ◽  
pp. 3433-3445
Author(s):  
Mengmeng Han ◽  
Xiaoman Ji ◽  
Jianfei Li ◽  
Zhiming Ge ◽  
Bin Luo ◽  
...  
Keyword(s):  
Folic Acid ◽  
Tumor Targeting ◽  
Targeting Effect ◽  
Preparation And Evaluation

Adoptive CD8+T-cell grafted with liposomal immunotherapy drugs to counteract the immune suppressive tumor microenvironment and enhance therapy for melanoma

Nanoscale ◽  
2021 ◽  
Author(s):  
Simeng Liu ◽  
Huimin Liu ◽  
Xiaoshuang Song ◽  
Ailing Jiang ◽  
Yuchuan Deng ◽  
...  
Keyword(s):  
T Cells ◽  
T Cell ◽  
Tumor Microenvironment ◽  
Cell Viability ◽  
Tumor Targeting ◽  
Cd8 T Cell ◽  
Targeting Delivery ◽  
Immunosuppressive Tumor Microenvironment

Efficient tumor-targeting delivery of CpG or BMS-202 by adoptive T-cells coupled with drug loaded liposomes reversed the immunosuppressive tumor microenvironment, restoring T cell viability and effectively inhibiting the growth of melanoma.

scholarly journals Synthesis and Characterization of Super Paramagnetic Magnetite Nanoparticles for Drug Delivery Application

2018 ◽  
Vol 7 (2.19) ◽  
pp. 87
Author(s):  
D BALAJ ◽  
C SARALA RUBI ◽  
N G. RENGANATHAN
Keyword(s):  
Drug Delivery ◽  
Magnetite Nanoparticles ◽  
Fe3o4 Nanoparticles ◽  
Biomedical Application ◽  
Synthesis And Characterization ◽  
Xrd Pattern ◽  
Magnetite Fe3o4 ◽  
Tumor Hyperthermia ◽  
Potential Applications

Attractive nanoparticles have been broadly considered on account of their potential applications as complexity operators in attractive reverberation imaging (MRI) of tumors, cell and DNA partition, attractively guided medication conveyance, tumor hyperthermia. Among the attractive oxides, magnetite nanoparticles are most appropriate because of their low danger and great attractive properties which may be used in drug delivery. Magnetite nanoparticles were synthesized using FeCl3 and FeSO4 as precursors and characterized for size and shape using non-contact AFM.  The formation of magnetite was confirmed by XRD pattern. The elemental composition of the obtained phase was determined using EDAX. In this work, we are aiming to develop drug loaded biopolymer Magnetite nanoparticles for biomedical application. Our main objective is to synthesize and characterize Magnetite (Fe3O4) nanoparticles.  

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