LANZANO' , Luca

Expansion microscopy (ExM) is a super-resolution imaging method that does not require any special optical microscope(1). The key point resides on the possibility of uniformly chemically expanding a sample, thus increasing the relative distances among objects of interest as fluorescent molecules labeling specific components. ExM is highly...

Structured Illumination Microscopy (SIM) is an important tool among the Super Resolution Microscopy techniques [1]. SIM stands out for its capability to perform optical sectioning, multicolor channel acquisition and live cell imaging, thanks to its low phototoxicity. In SIM, the specimen is illuminated with a high-frequency grating pattern,...

The DEK oncoprotein is a ubiquitous nuclear factor that has been consistently associated with tumor progression: its expression level differs between normal and cancer cells, raising the possibility of using DEK as a tumor marker. Moreover, DEK is a non-histone architectural chromatin factor that may influence nucleosomal accessibility and...

Stimulated emission depletion (STED) microscopy and Separation of Photons by Lifetime Tuning (SPLIT) provide optical super-resolution imaging, at the nanometer scale, on intact single cell nuclei. The resolution that can be achieved is limited by factors such as photobleaching and/or reduction of signal-to-noise, which depend on the conditions...

Oncogenes activation may lead to alterations in chromatin organization at the nanoscale by interfering with fundamental processes such as DNA transcription, DNA replication, and DNA Damage Response [1]. The in vitro observation of these molecular processes is crucial to understand how oncogenes can alter chromatin organization leading to tumor...

The architectural organization of chromatin can play an important role in gene expression by regulating the diffusion of molecules via binding interactions and molecular crowding [1]. In this respect, understanding how variations of chromatin architecture affect nuclear dynamics is of fundamental importance. Fluorescence Correlation...

The fact that the size of many molecular complexes is in the range of 10 to 100nm has generated a growing interest for the development of super-resolved fluorescence microscopy techniques. Optical super-resolution is generally achieved by switching on-off the fluorophores by stochastic or targeted approaches [1]. For instance, in stimulated...