|
|
Nanotransporters for theranostics
Dostálová, Simona ; Adam,, Vojtěch (referee) ; Kizek, René (advisor)
Master thesis deals with the use of bacteriophage as a theranostic drug nanocarrier. The term theranostics is used in recent years for systems that allow connecting of diagnostics, targeted drug delivery and monitoring of patient’s response to administered treatment in a single modality. These systems are very suitable especially with heterogeneous diseases, such as cancer. Nowadays, the treatment of cancer has often severe side effects to the patient’s body, which lowers his capability to fight the disease. Theoretical part of this work is focused on the properties of viral capsids, proteins and inorganic materials as drug nanocarriers. In practical part of this work, different methods for cultivation of bacteriophage are compared, both in liquid and solid medium and with different concentrations of the maltose, trough whose receptors bacteriophage is able to enter the host cell. Optimal was cultivation with 0.2% maltose in solid medium. Practical part is focused mainly on the use of bacteriophage as a nanocarrier for cytotoxic drug doxorubicin. Bacteriophage was able to encapsulate all applied concentrations of doxorubicin (0; 12.5; 25; 50; 100 and 200 g/ml), which was proved using fluorescent detection. Different times of encapsulation (2; 4; 8 and 12 hours) were studied. Optimal time was 2 hours. Encapsulation properties of bacteriophage were compared to apoferritin. Bacteriophage was able to encapsulate 4× higher concentrations of doxorubicin and its release during rinsing with water was 10× lower compared to apoferritin. This work concludes that bacteriophage is a very suitable platform for targeted drug delivery in theranostics.
|
|
|
Cell Surface Markers in Colorectal Cancer
Červená, Klára ; Španielová, Hana (advisor) ; Plocek, Vítězslav (referee)
Colorectal cancer is the most frequent cancer in the Czech Republic. Retrospective analysis of patients with colorectal cancer have led and still lead to the discovery of new biomarkers that may be important in treatment, prediction or prognosis of cancer. The main aim of this thesis was to desribe discovered cell surface proteins (biomarkers) of colorectal cancer, that correlate with colorectal cancer progression, metastasis and patient outcome, and discusses the possibilities of their utilization as cancer cell targets for theranostic purposes. Keywords: colorectal cancer, biomarkers, targeting, theranostics, prediction, prognosis
|
|
|
Testování nových nanomateriálů pro teranostické aplikace u modelu myši
Donovalová, Alexandra
Theranostics is connecting two medical branches, diagnostic and therapy. It enables transport of drugs and diagnostic imaging in one step. Nanoparticles, nanotubes, lipozomes or apoferritin can be used as platform for targeted transport. Apoferritin (APO) is a protein from ferritin family, which is characterized by an empty cavity. Is possible encapsulate some cargo (e.g., drug) into this cavity. Encapsulation is done by pH change. There is a possibility to modify APO surface. It causes targeted transport to for example cancer cells. In this study, process of preparation of targeted nanotransporter based on APO is described; next, its characterization by in vitro experiments is shown. The prepared targeted nanotransporter delivered drug to cancer cells and in the same time was decreased toxicity on surrounding tissue and organs.
|
|
|
Therapeutic Nanoparticles and Immunotoxicity
Lehutová, Daniela ; Vannucci, Luca Ernesto (advisor) ; Grobárová, Valéria (referee)
Nanočastice sú submikroskopické štruktúry vyhotovené z rôznych materiálov s obrovským terapeutickým potenciálom. Rovnako predstavujú nový nástroj pre lepšie cielenie a podávanie liečiv do jednotlivých tkanív. Bolo vynaložených mnoho pokusov pre vyvinutie terapeutík, ktoré budú lepšie kompatibilné v organizme a zároveň by zlepšili účinnosť moderných liekov. Na rozdiel od bežne používaných spôsobov pre podávanie liečiv, enkapsulovaná forma predstavuje obrovskú výhodu pri znižovaní vedľajších účinkov oproti bežne používaných liekoch. V tejto práci sú porovnávané výhody použitia nanočastíc spolu s ich možným rizikom, najmä na ich munitný systém. Vzhľadom k tomu, že toxicita sa líši v závislosti na chemicko fyzikálnych vlastnostiach a tkanivách, v ktorých sa akumulovali, musí byť zvolená vhodná stratégia, aby sa predišlo možných nežiaducim účinkom. Z tohto dôvodu je potrebné zvážiť preventívne opatrenia a správne upraviť dané nanočástice predtým, než budú použité v organizme, rovnako ako spôsobená odpoveď organizmu a jej dôsledok musia byť vhodne monitorované. Zvýšená pozornosť musí byť venovaná príprave nanočastíc, aby sa predišlo prípadnej kontaminácii a nebezpečenstvu pre laboratórny personál. Kľúčové slová nanočástice, podávanie liečiv, imunita, toxicita, teranostika
|
|
|
Cell Surface Markers in Colorectal Cancer
Červená, Klára ; Španielová, Hana (advisor) ; Plocek, Vítězslav (referee)
Colorectal cancer is the most frequent cancer in the Czech Republic. Retrospective analysis of patients with colorectal cancer have led and still lead to the discovery of new biomarkers that may be important in treatment, prediction or prognosis of cancer. The main aim of this thesis was to desribe discovered cell surface proteins (biomarkers) of colorectal cancer, that correlate with colorectal cancer progression, metastasis and patient outcome, and discusses the possibilities of their utilization as cancer cell targets for theranostic purposes. Keywords: colorectal cancer, biomarkers, targeting, theranostics, prediction, prognosis
|
|
|
Nanotransporters for theranostics
Dostálová, Simona ; Adam,, Vojtěch (referee) ; Kizek, René (advisor)
Master thesis deals with the use of bacteriophage as a theranostic drug nanocarrier. The term theranostics is used in recent years for systems that allow connecting of diagnostics, targeted drug delivery and monitoring of patient’s response to administered treatment in a single modality. These systems are very suitable especially with heterogeneous diseases, such as cancer. Nowadays, the treatment of cancer has often severe side effects to the patient’s body, which lowers his capability to fight the disease. Theoretical part of this work is focused on the properties of viral capsids, proteins and inorganic materials as drug nanocarriers. In practical part of this work, different methods for cultivation of bacteriophage are compared, both in liquid and solid medium and with different concentrations of the maltose, trough whose receptors bacteriophage is able to enter the host cell. Optimal was cultivation with 0.2% maltose in solid medium. Practical part is focused mainly on the use of bacteriophage as a nanocarrier for cytotoxic drug doxorubicin. Bacteriophage was able to encapsulate all applied concentrations of doxorubicin (0; 12.5; 25; 50; 100 and 200 g/ml), which was proved using fluorescent detection. Different times of encapsulation (2; 4; 8 and 12 hours) were studied. Optimal time was 2 hours. Encapsulation properties of bacteriophage were compared to apoferritin. Bacteriophage was able to encapsulate 4× higher concentrations of doxorubicin and its release during rinsing with water was 10× lower compared to apoferritin. This work concludes that bacteriophage is a very suitable platform for targeted drug delivery in theranostics.
|
guest ::
