A research team led by the IBEC, in collaboration with the CMR [B], discovers a mechanism that generates binucleated cells.This mechanism has been identified during the regeneration of the heart of the zebrafish, and could be associated with the extraordinary regenerative power of this animal.
After an acute heart lesion, such as a myocardial infarction, the human heart is unable to regenerate. The adult cardiac cells cannot grow and divide to replace the damaged ones, and the lesion becomes irreversible. But this does not happen in all animals. A freshwater fish native to Southeast Asia, known as a zebrafish, can completely regenerate its heart even after 20% ventricular amputation.
For the first time in humans, researchers from IBEC have simultaneously recorded the brain activity of the two key areas linked to memory: the hippocampus and the neocortex.
This study was made possible thanks to the voluntary participation of epilepsy patients who, due to their disease, have intracranial electrode implants. Making use of virtual reality, the participants performed spatial memory tasks. The taste of your favourite snack after school, your first kiss, that time you partied until dawn… Memories are a way of travelling into the past. Despite how easy it can be to remember a situation, the cerebral process taking place is complex and continues to be, for the most part, a mystery.
Researchers from the IBEC have developed a virtual reality-based system for rehabilitating patients with Broca’s aphasia. RGSa has been proven to improve communicative frequency and effectiveness in daily life, as well as sustaining improvements in testing after an 8-week period.
Rehabilitation to recover speech after brain damage is efficient, provided that it is carried out intensively, and can be included in relevant behavioural tasks. However, limited resources in healthcare systems cannot always provide said treatment in sufficient doses. Achieving a cost-effective, evidence-based rehabilitation method is one of the objectives targeted by the SPECS research group.
The Biomimetic systems for cell engineering group has developed a new method to generate 3D intestinal tissue using hydrogels. This new in vitro model has been improved by providing cells with a more physiologically realistic environment, including tissue architecture, cell-matrix interactions and chemical signalling while remaining compatible with standard cell characterization techniques.
Epithelial tissues contain complex three-dimensional microtopographies that are essential for their proper performance. These 3D microstructures provide cells with the physicochemical and mechanical signals needed to guide their self-organization into functional tissue structures and are key to their proper functioning.
The Bacterial Infections: Antimicrobial Therapies group from IBEC, led by Eduard Torrents, has designed a new method that, for the first time, makes it possible to check antimicrobial treatment efficacy in the presence of nanoparticles.This new technique has recently been published in the Journal of Nanobiotechnology..
Antimicrobial resistance is one of the main threats facing global healthcare today. According to data from the WHO, there are an increasing number of infections (pneumonia, tuberculosis, gonorrhoea) that are more difficult to treat given that many antibiotics have lost their effectiveness. The root of this problem lies in the excessive use and misuse of antibiotics, which causes bacteria to become resistant to them. As a result, antibiotics are no longer effective.
A scientific team led by IBEC and UAB manages to efficiently activate molecules located inside cell tissues using two-photon excitation of with infrared light lasers. The results of the study has been published in Nature Communications.
Having absolute control of the activity of a molecule in an organism. Deciding when, where and how a drug is activated. These are some of the goals expected to be reached with the so-called photoswitchable molecules, compounds that, in the presence of certain light waves, change their properties. Today, thanks to the results of a study led by the Institute for Bioengineering of Catalonia (IBEC) together with the Universitat Autònoma de Barcelona (UAB), the scientific community is one step closer to achieving this objective.
IBEC’s Smart Nano-Bio-Devices group have published a paper describing nanomotors that can attack 3D bladder cancer spheroids in vitro.
The nanomotors carry anti-FGFR3 on their outer surface, an antibody that not only enables cancerous cells to be specifically targeted, but also inhibits the fibroblast growth factor signaling pathway, suppressing tumor growth. Crucially, the fuel that gives the nanomotors the capability of autonomous motion is urea, which is present at high concentrations in the bladder – making these particular nanomotors a promising avenue for this particular cancer.
Researchers from the IBEC have created, for the first time, 3D organoid cultures from pluripotent stem cells, which resemble human embryonic kidney tissue during the second trimester of pregnancy.
Using biomaterials that mimic the embryonic microenvironment, researchers have also achieved mini-kidneys with relevant features for immediate use in renal disease modeling.
A study published today in Nature Materials reports how researchers from IBEC have created organoids, or mini-organs, that resemble the human embryonic kidney, and how these 3D cultures mimic essential aspects during the formation of the kidney, such as distribution, functionality and specific organization of cells.
Cell migration is an essential biological process that drives tissue and organ formation during embryo development, and also helps protect the body through immune response and wound healing mechanisms. The shape changes necessary for cell migration depends on dynamic organization and force generation from the cell’s internal actomyosin cytoskeleton, which is made up of structural actin filaments and contractile myosin motor proteins.
Reorganization of these components enables two mechanisms of cell migration.
IBEC’s Smart Nano-Bio-Devices group – the institute’s experts in micro- and nanorobots – have used 3D bioprinting to produce ‘biorobots’ made of biological elements such as muscle tissue.
These bio-inspired soft robotic devices could offer many more capabilities for movement and performance – such as real-time bio-sensing, self-organization, adaptability, or self-healing – than existing systems, which use solely artificial materials.
“Bio-inspired soft robotics is an exciting new discipline, as it may help us overcome the limitations of traditional robotic systems, such as flexibility, responsiveness and adaptability,” says Samuel Sanchez, group leader at IBEC and ICREA research professor.