nanomedicine
DESCRIPTION
Uses of Nanotechnology: 1- Diagnosis and treatment of cancer According to the US National Cancer Institute (OTIR, 2006) “Nanotechnology will change the very foundations of cancer diagnosis, treatment, and prevention”. We have already seen how nanotechnology, an extremely wide and versatile field, can affect many of its composing disciplines in amazingly innovative and unpredictable ways. Q- what is cancer ? Cancer is a disease caused by normal cells changing them so that they grow in an uncontrolled way. The uncontrolled growth can cause problems in one or more of the following ways: -spreading into normal tissues nearby. -causing pressure on other body structure. -spreading to other parts of the body through the lymphatic system or blood stream. The word cancer was first applied to the disease by Hippocrates (460–370 B.C.), the Greek philosopher, who used the words carcinos and carcinoma to refer to non-ulcer forming and ulcer forming tumors. The words refer to a crab, probably due to the external appearance of cancerous tumors, which have branch-like projections that resemble the claws of a crab.TRANSCRIPT
Karim El-Sayed El-Abassiry
Nanotechnology is the science that deals with the processes that occur at molecular level and of nanolength scale size.
Pharmaceutical nanotechnology embraces applications of nanoscience to pharmacy as nanomaterials, and as devices like drug delivery, diagnostic, imaging and biosensor.
Introduction
Apoptosis
Genetics of cancer
Insertion Mutation
Shape of the protein
Growing olderTobaccoSunlight
radiationCertain chemicals and other substances
Some viruses and bacteriaCertain hormones
Family history of cancerAlcohol
Radiation
Cancer treatment
Nanomedicine
Diagnosis
Quantum dots
nanoparticles with quantum confinement properties
Diagnosis
Sensor test chips
thousands of nanowires
Nanowires
Nanowire sensor composition
Diagnosis
Carbon Nano Tubes
Used to make DNA biosensors
Carbon Nano Tubes
Diagnosis
Nanoscale Cantilevers
coated with molecules capable of binding to specific molecules that only cancer cells secrete
Nanoparticles as Drug DeliveryMany types of nanoparticles are under various
stages of development as drug delivery systems, including liposomes and other lipid-
based carriers (such as lipid emulsions and lipid-drug complexes), polymer-drug conjugates, polymer microspheres, micelles, and various
ligand-targeted products
Liposomes and Other Lipid-based
Nanoparticles
targeted to the internalizing antigen CD44 on B16F10 melanoma cells showed enhanced intracellular drug uptake from the targeted liposomes when compared with the free form of DOX. The enhanced uptake was correlated with enhanced cell killing efficacy. A liposomal formulation of cisplatin that lacked efficacy demonstrated encouraging therapeutic results when delivered in an immunoliposome targeted to an internalizing antigen. Recently, promising results were reported from a Phase I clinical study that evaluated the effect of MCC-465, a PEGylated liposomal formulation containing DOX targeted with an F(ab')2 fragment of a human mAb named GAH, in patients with metastatic stomach cancer
study of a liposome formulation of doxorubicin
(DOX)