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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
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Toll like receptors and myeloid cells in development and disease
Balounová, Jana ; Filipp, Dominik (advisor) ; Špíšek, Radek (referee) ; Vannucci, Luca Ernesto (referee)
Toll like receptors (TLRs) are germline-encoded pattern recognition receptors (PRRs) that play a central role in host cell recognition and responses to pathogens. Primarily they are responsible for induction and regulation of the innate and adaptive immune responses whereby the effector function is executed chiefly by differentiated myeloid cells. Somewhat unexpectedly, TLRs have been also shown to be involved in direct pathogen sensing by bone marrow-derived hematopoietic stem cells (HSCs) and hematopoietic progenitors when, under inflammatory conditions, the rapid generation of innate immune effector cells that effectively combat the infection is of utmost priority. While it has been recognized that the release of inflammatory cytokines from inflamed tissues along with the changes in proportions of differentiating cells in the bone marrow (BM) as well as the BM niche can nudge the differentiation of adult BM-derived cells towards myeloid cells and granulocytes, a direct role of TLRs expressed by HSCs in this process has been demonstrated only recently. However, whether a similar mechanism operates also during embryonic hematopoiesis is unknown. Here we show that TLRs and their adaptor proteins are functionally expressed during early stages of embryogenesis by short-lived maternally-transferred...
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New ferritin nanoparticles for specific targeting of experimental melanoma in mice: in vitro and in vivo tests.
Rajsiglová, Lenka ; Vannucci, Luca Ernesto (advisor) ; Šírová, Milada (referee)
Cancer diseases represent second most frequent cause of death after cardiovascular diseases in Europe. Nowadays used medical treatments like chemotherapy and radiotherapy are nonspecific and cause huge side effects. Various systems to deliver therapy directly inside the tumour microenvironment and reduce side effects are under development. Protein nanoparticles seem to be very promising strategy to achieve that goal. Our group in cooperation with CNR in Rome tested nanoparticles based on heavy chain of human ferritine. These constructs, modified to expose the tumor targeting molecule, were able to be specifically internalised by B16F10 melanoma cells in vitro. They also specifically target and localise at the sites of primary melanoma and lung metastases of different size in mouse in vivo model. These nanoparticles can carry either therapeutic or diagnostic molecules. Thus they represent a suitable candidate for further studies for potential use in clinical praxis as a diagnostic and/or therapeutic agents (theranostics). Powered by TCPDF (www.tcpdf.org)
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Gut microbiome and colorectal cancer
Tlaskalová-Hogenová, Helena ; Klimešová, Klára ; Zákostelská, Zuzana ; Kverka, Miloslav ; Hornová, Michaela ; Vannucci, Luca ; Štěpánková, Renata ; Hudcovic, Tomáš ; Kozáková, Hana ; Rossmann, Pavel
The work deals with metagenomic approaches that are currently being used to decipher the genome of the microbiota (microbiome), and, in parallel, functional studies are being performed to analyze the effects of microbiota on the host.
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Multivalentní glykokonjugáty ve studiu interakce lektinových receptorů NK/NKT buněk
Vannucci, Luca ; Pospíšil, Miloslav ; Rossmann, Pavel ; Chernyavskiy, Oleksandr ; Kubínová, Lucie ; Křen, Vladimír ; Luptovcová, Martina ; Svoboda, Jan ; Kuldová, Markéta ; Bezouška, Karel ; Fišerová, Anna
The events following the administration of GN8 in vitro, in vivo and ex vivo, lead to increased expression of CD69. The CD69-dependent IFNg production is modulated by co-activation of NKG2D and Ly49 receptors. Glycodendrimers can assist the dissection of activation network of NK/NKT cell lectin-like receptors in rat and murine models
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Multivalentní glykomika v imunoterapii experimentálních nádorů
Vannucci, Luca ; Pospíšil, Miloslav ; Krist, Pavel ; Křen, Vladimír ; Huliková, Katarína ; Luptovcová, Martina ; Svoboda, Jan ; Kuldová, Markéta ; Bezouška, Karel ; Rossmann, Pavel ; Difato, Francesco ; Mosca, F. ; Fišerová, Anna
Lectin-like receptors can modulate the cytotoxic, regulatory and dendritic cell responses by their interactions. GN8 multivalent glycoconjugates are able to internalize inside and activate NKR-P1 positive cells inducing production of IFN-gamma and expression of CD69. The final effect is a modulation of anticancer immunity with reduction of cancer growth
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