Search results for "Emt"

Involvement of EZH2-MYC loop and SALL4 in Epithelial-Mesenchymal Transition (EMT) and trastuzumab resistance process in HER2+ breast cancer

2021

Breast cancer (BC) is the most common type of cancer in females worldwide. It is also the second leading cause of death in women. BC is covered with heterogeneity properties, that leads to poor prognosis and therapeutic resistance. It has always been essential to unveil the different molecular mechanisms involved in BC cancer progression, finding a suitable treatment for the patients. This thesis focuses on unwrapping the various molecular mechanisms involved in HER2+ BC subtypes, as this denotes an aggressive phenotype among other subtypes of BC. Downregulation of miR-33b has been documented in many types of cancers and involves proliferation, migration, and epithelial-mesenchymal transiti…

Preemptive Transfer of GMP-Grade CD8-Depleted Donor Lymphocytes after T-Cell Depleted Reduced-Intensity Transplantation.

2005

Abstract The combination of fludarabin (150mg/m2) / melphalan (140mg/m2) based reduced-intensity allo-transplantation (RIT) with in vivo T-cell depletion (TCD) by the anti-CD52 antibody alemtuzumab (100mg) has demonstrated efficient engraftment and reduced graft-versus-host disease (GVHD) (Kottaridis et al., Blood 2000). However, the slow lymphocyte recovery following this protocol is associated with reduced anti-infectious and antitumor immunity. In an attempt to improve immune-reconstitution after TCD / RIT, we investigated the early preemptive use of CD8-depleted donor lymphocyte infusions (DLIs). For CD8 depletion of donor leukaphereses, a new depletion protocol using clinical grade CD8…

Impact of DLI after In Vivo T-Cell-Depletion: Prophylactic CD8 Depleted or Preemptive CD3pos DLI?

2016

Abstract Introduction: The combination of reduced-intensity conditioning (RIC) with in vivo T-cell depletion by alemtuzumab prior to hematopoietic stem cell transplantation (HSCT) has demonstrated efficient engraftment and reduced graft-versus-host disease (GVHD). However, this regimen is associated with slow lymphocyte recovery leading to a delayed anti-infectious and anti-malignant immunity. DLI can be used to improve immune reconstitution. Here we investigate on the impact of different DLI: prophylactic CD8-depleted DLI vs preemptive non-depleted DLI. Methods: 256 patients with different hematologic malignancies were planned for treatment with DLI after allogeneic HSCT following reduced …

Būtisks procesuāls pārkāpums kā pamats tiesību normas atzīšanai par neatbilstošu Latvijas Republikas Satversmei

2022

Likumdošanas process, kas vēsturiski ir bijis politiskas gribas izpausme, neierobežojot to ar tiesību normām, mūsdienu aktuālo vajadzību un cilvēka, tehnoloģiju un zinātnes attīstības kontekstā, vairs neiederas demokrātiskas tiesiskas valsts tvērumā. Labas likumdošanas princips sekmē, ka tiesību normas pieņemšanas process ne vien atbilst formālajām prasībām, bet arī veicina sabiedrības uzticību valstij un tiesībām. Tas ir racionālāks un pieņemtie lēmumi ir zinātniski pamatoti. Pētījuma mērķis ir vērtēt būtisku procesuālu pārkāpumu kā pamatu tiesību normas atzīšanai par neatbilstošu Latvijas Republikas Satversmei. Pētījuma rezultātā tiek konkretizēti kritēriji, kas ir nozīmīgi, nošķirot būti…

Adipose stromal cells promote the transition of colorectal cancer cells toward a mesenchymal-like phenotype

2021

ABSTRACT Colon cancer progression is among the risks that increase with obesity. We have recently unveiled the molecular mechanism by which adipose tissue-released molecules, HGF and IL-6, make colorectal cancer (CRC) cells acquiring mesenchymal traits. Targeting of adipose-derived factors abrogate the metastatic potential of CRC stem cells (CR-CSCs) in obese patients.

p63 role in breast cancer

2016

Photoinduced charge separation in functional carbon-silver nanohybrids

2022

In recent times, nanoscience is devoting growing interest to the easy assembly of well-established nanomaterials into hybrid nanostructures displaying new emerging features. Here, we study the photophysicochemical response of binary nanohybrids obtained by the spontaneous coupling of luminescent carbon dots to silver nanoparticles with controlled surface charge. Evidence of the successful coupling is obtained by steady-state and time resolved optical measurements and further confirmed by direct imaging. We demonstrate strong interactions within nanohybrids, which can be modelled in terms of a sub-picosecond electron transfer from photoexcited carbon dots to silver nanoparticles. Accordingly…

Minimizing geminate recombination losses in small-molecule-based organic solar cells

2019

Small-molecule-based organic solar cells (OSCs) are a recurrent alternative to polymer-based OSCs. Due to the higher purity and definition of small molecules compared to polymers, the morphological requirements can be more relaxed. Here, we present a series of novel rhodanine-based small-molecule electron donors and blend them with the standard acceptor PC70BM. By performing a target analysis on femtosecond spectroscopy data, we quantify the rates of geminate charge recombination. We are able to reproduce these rates by applying the Marcus–Levich–Jortner equation, using results from quantum chemical calculations. This shows that in a series of differently substituted compounds, one can corr…

Ultrafast energy transfer in dansylated POPAM–eosin complexes

2006

Abstract Excitation energy transfer (EET) in dendritic host–guest complexes has been studied. Three generations G2, G3 and G4 of dansyl substituted poly(propyleneamine) dendrimers (POPAM) were complexed with a fluorescent dye eosin in chloroform solution. Arrival of excitation from dansyls to eosin was monitored by femtosecond transient absorption spectroscopy. EET rates from the dansyls to eosin(s) are characterised by two time constants 1 ps and 6 ps independent of dendrimer generation. Relaxation processes in eosin were clearly faster when complexed with dendrimer than in solution. As several eosins are bound to G3 and G4 dendrimers, besides host–guest interaction, also eosin–eosin inter…

The primary structural photoresponse of phytochrome proteins captured by a femtosecond X-ray laser

2020

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