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Project YumAlgae

Project YumAlgae | iBB | Scoop.it

Consumer acceptance of microalgae products is often hampered by their colour, “fishy” smell and flavor. An international project with research teams from ISA (PI Prof. Anabela Raymundo), IST (Carla de Carvalho, iBB-BERG), Norce (Norway) and the company Pagarete Microalgae solutions (Portugal) is aimed at the use of enzymes to improve the overall sensory quality of microalgal ingredients. The project, entitled “YUM ALGAE - enzYmes for improved sensory qUality of MicroALGAE ingredients in foods”, is funded in ca. 1 million euros by the Iceland, Liechtenstein, Norway grants (EEA grants, Blue Growth programme).

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Ana Melo Delivers Invited Seminar at the Portuguese Neuroscience Meeting

Ana Melo Delivers Invited Seminar at the Portuguese Neuroscience Meeting | iBB | Scoop.it

Ana Melo gave an invited talk during the XVII Meeting of the Portuguese Society for Neuroscience, at Coimbra, 1 - 3 December, 2021. She presented recent work focused on characterizing the distinct conformational dynamics of the flanking polyQ regions in the membrane-bound state of Huntington exon 1, and its role in Huntington´s disease. Her presentation was in the framework of the SPB Symposium: “A biophysical perspective on degenerative diseases: protein assembly and phase separation”, together with Sandra Macedo Ribeiro (IBMC- i3S) and Salvador Ventura (IBB-Universitat Autonoma de Barcelona).

 

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Implementation of Synthetic Pathways towards Microbe-Based Production of Non-Natural Carboxylic Acids

Implementation of Synthetic Pathways towards Microbe-Based Production of Non-Natural Carboxylic Acids | iBB | Scoop.it

Carboxylic acids (CAs) are considered key players in the implementation of more sustainable industrial processes due to their potential to replace a set of oil-derived commodity chemicals and there is growing interest in producing them through microbial processes. While many CAs are intermediates of microbial central carbon metabolism, and therefore envisaging their production in a host of choice is relatively straightforward; for other CAs this approach is difficult. This could be because they do not occur naturally (as is the case for levulinic acid) or because the described production pathway cannot be easily ported (as it is the case for adipic, muconic or glucaric acids). In a review published in Journal of Fungi, Nuno Mira’s team (iBB) reviewed the synthetic biology approaches that have been made towards enabling the production of non-natural CAs in microbes, with a large emphasis on metabolic retrobiosynthesis methodologies. Additionally, the authors also reviewed the pathway prospecting studies towards microbial levulinic, poly-lactic and methacrylic acid production, as two case-studies where there is a need to bridge the gap between natural CAs and their non-natural industrial derivatives.

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Special Issue "Bioprocess Engineering: Sustainable Manufacturing for a Green Society"

Special Issue "Bioprocess Engineering: Sustainable Manufacturing for a Green Society" | iBB | Scoop.it

The mild operational conditions typically required by biobased production processes, together with the selective nature of biocatalysts, microbial diversity and tunability, and the century-long record of fermentation, clearly place bioprocesses as the primary contenders, by far, in achieving the generalized implementation of efficient, green manufacturing strategies. Moreover, by overlapping with the biorefinery approach, the foundations needed for bioprocesses to embrace the circular economy concept are set. In this Special Issue on “Bioprocess Engineering: Sustainable Manufacturing for a Green Society", guest edited by Pedro Fernandes and Carla de Carvalho (iBB-BERG) in Processes, the papers will discuss new bioproducts and concomitant bioengineering approaches to achieve a sustainable and environmentally friendly economy.

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Matilde Marques Wins Poster Prize at MICROBIOTEC21

Matilde Marques Wins Poster Prize at MICROBIOTEC21 | iBB | Scoop.it

PhD student Matilde Marques from DBE and iBB-BSRG received a Best Poster Prize for her video-poster presented at the Microbiotec21 web-conference. Matilde showed her work on metagenomics of viral communities in healthy and diseased octocorals. Matilde is a first year PhD student of the MIT Portugal program supervised by Rodrigo Costa and Tina Keller-Costa from IST and Raquel Peixoto from KAUST. Her thesis project focuses on developing microbiome therapy strategies to improve octocoral health. Congrats, Matilde!

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Magnetic Particles for the Purification of DNA Scaffolds for Biomanufacturing DNA-Origami Nanostructures

Magnetic Particles for the Purification of DNA Scaffolds for Biomanufacturing DNA-Origami Nanostructures | iBB | Scoop.it

Asymmetric PCR (aPCR) is often used to generate single-stranded DNA (ssDNA) scaffolds, which can then be assembled into nanoobjects by the DNA-origami technique. The scaffolds are usually purified by agarose gel extraction, a laborious, time consuming, limited, and non-scalable technique that presents low recovery yields, delivers low-quality products. To overcome such pitfalls, Ana Silva-Santos, Rui Silva, Sara Rosa and Miguel Prazeres from BERG-iBB, in collaboration with Pedro Paulo from CQE developed a simple, fast, and potentially scalable affinity-based method comprising magnetic particles. Specifically, scaffolds were synthesized by aPCR and purifed using magnetic particles functionalized with a 20 nt oligonucleotide complementary to the 3′ end of the target. The purified scaffolds were used to assemble 31 and 63 bp edge length tetrahedra with short oligonucleotides and thermal annealing, demonstrating the potential of affinity-based magnetic beads in the production of DNA-origami nanostructures. The work was published in ACS Applied Nanomaterials.

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Opportunities in Continuous Manufacturing of Large Molecules

Opportunities in Continuous Manufacturing of Large Molecules | iBB | Scoop.it

Continuous manufacturing has attracted significant interest over the past decade for small molecules formulated as drug products. The case for adopting continuous manufacturing platforms for manufacturing biologics (i.e., large proteins or biologic products such as vaccines) is made in a paper co-authored by José Cardoso Menezes from BERG-iBB and colleagues and published in Pharmaceutical Engineering. The article briefly reviews continuous biomanufacturing (CBM) at a time of very high and global demand for vaccines as well as increased demand for cell and gene therapy products.

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Antitumour and Antiproliferative Effect of Xanthohumol-loaded PLGA Nanoparticles on Melanoma

Antitumour and Antiproliferative Effect of Xanthohumol-loaded PLGA Nanoparticles on Melanoma | iBB | Scoop.it

Cutaneous melanoma is the deadliest type of skin cancer and current treatment is still inadequate, with low patient survival rates. The use of polyphenols loaded into nanoparticles could potentially address the lack of efficacy of current therapy. In a collaborative work published in a special issue of the journal Materials, with researchers from the University of Porto, Pedro Fonte and Ana Macedo from BERG-iBB assessed the potential of xanthohumol-loaded nanoparticles to treat melanoma. Nanoparticles had a size of about 300 nm and a PdI of 0.259, while achieving a xanthohumol loading of about 90%. The viability study showed similar cytoxicity between the xanthohumol and xanthohumol-loaded nanoparticles at 48 h with the IC50 established at 10 µM.  The ultimate anti-melanoma effect emerged from an association between the viability, migration and macrophagic phenotype modulation. These results display the remarkable antitumour effect of the xanthohumol-loaded nanoparticles and are the first advance towards the application of a nanoformulation to deliver xanthohumol to reduce adverse effects by currently employed chemotherapeutics.

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Lipid Changes in Daptomycin-resistant MRSA During Antibiotic Exposure

Lipid Changes in Daptomycin-resistant MRSA During Antibiotic Exposure | iBB | Scoop.it

The cyclic anionic lipopeptide daptomycin (DAP) is used in the treatment of severe infections caused by Gram-positive pathogens, including methicillin-resistant Staphylococcus aureus (MRSA). DAP resistance, though rare, often results in treatment failure. Paradoxically, in MRSA, DAP resistance is usually accompanied by a concomitant decrease in b-lactam resistance in what is known as the ‘see-saw effect’. In a recent publication in the Journal of Antimicrobial Chemotherapy, Carla CCR de Carvalho (iBB-BERG), Agustina Taglialegna and Adriana E. Rosato (currently at Riverside University Health System, USA), showed that the post-translocational protein PrsA has a major role in orchestrating the cell membrane lipid adaptation associated with the see-saw effect, in addition to its function required for the posttranscriptional maturation of PBP 2a. This study contributes greatly to the understanding of MRSA biology and of the impact of DAP/b-lactam on the cell membrane/cell wall machinery.

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iBB Researcher Nuno Bernardes is a Fulbright Visiting Scholar at the University of Pennsylvania

iBB Researcher Nuno Bernardes is a Fulbright Visiting Scholar at the University of Pennsylvania | iBB | Scoop.it

In cancer cells, the glycome is distinct from that on non-cancer cells, affecting the functionality of many overexpressed membrane oncogenes. In the scope of a visit to the laboratory of Prof. Elizabeth Rhoades at the University of Pennsylvania, Nuno Bernardes from BSRG-iBB will use advanced microscopy-based biophysical approaches to determine and quantify the molecular determinants involved in protein-glycan interactions between azurin(s)-derived peptides and cancer cells. This will make use of giant plasma membrane vesicles (GPMVs) originated from cell lines and primary tumor cells. The characterization of these interactions will foster the development nano-delivery systems like nanoparticles and exosomes engineered to surface display azurins-derived peptides to improve tumor treatments. The project and visit is supported by the Fulbright program, as described here. 

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Prediction of the Haa1-regulatory Network in the Oleaginous Yeast Rhodotorula toruloides

Prediction of the Haa1-regulatory Network in the Oleaginous Yeast Rhodotorula toruloides | iBB | Scoop.it

A new bioinformatics tool, developed by our computational biologist collaborators at INESC-ID, is described in a recent article published in BMC Bioinformatics. The BSRG-iBB team contributed to the application of the tool to predict the putative Haa1-regulon in the lipid producing yeast cell factory Rhodotorula toruloides. For this, genomic information on this species was collected and included in the CommunityYeastract to benefit from the access to all the comparative genomics queries offered in the YEASTRACT + portal. The transcription factor Haa1 is the main regulator of S. cerevisiae genomic response to acetic acid stress, regulating, directly or indirectly, the majority of acetic acid tolerance genes. The prediction of RtHaa1-regulon has an expected impact in the optimization of R. toruloides robustness for biorefinery processes using hydrolysates from lignocellulosic residues. The BSRG-iBB team involved in these studies included the PhD student Miguel Antunes, his supervisor Isabel Sá-Correia, and Cláudia P. Godinho and Miguel C. Teixeira. 

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Lipid Hydroperoxide Compromises the Membrane Structure Organization

Lipid Hydroperoxide Compromises the Membrane Structure Organization | iBB | Scoop.it

Lipid hydroperoxides have recently been recognized as key mediators of diseases (such as neurodegenerative disorders or Type II diabetes) and cell death. In a recent work, structural and dynamic perturbations induced by the hydroperoxidized POPC lipid (POPC-OOH) in fluid POPC membranes were addressed using advanced small-angle X-ray scattering (SAXS) and fluorescence methodologies. Notably, this multidisciplinary approach revealed that the hydroperoxide group located at the membrane interface, promotes a higher membrane hydration and microviscosity, with a strikingly lower order and bending rigidity, an unusual trend in membrane biophysics, which ultimately compromises membrane structure organization. This international work co-led by Ana M. Melo (BSIRG-iBB) and Rosangela Itri (Institute of Physics, University of São Paulo) was recently published in Langmuir and involved other BSIRG-iBB researchers (Ana Coutinho, Alexander Fedorov and Manuel Prieto).

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Gefitinib-Loaded p28-PLGA Nanoparticles Reduce Tumor Burden and Metastases in Lung Cancer

Gefitinib-Loaded p28-PLGA Nanoparticles Reduce Tumor Burden and Metastases in Lung Cancer | iBB | Scoop.it

p28 is a 28 amino acids peptide derived from the bacterial protein azurin. It possesses cell-penetrating capabilities showing preferential enter in cancer cells. Moreover it has been subject in US to two phase I clinical trials as a anticancer agent. In a recent paper published in Journal of Controlled Release, a iBB team (Garizo AR, Dias TP, Fernandes F, Bernardes N, Fialho AM) together with a i3S/UP team (Castro F, Martins C, Almeida A, Barrias CC, Sarmento B) were able for the first time to fabricate p28-functionalized PLGA nanoparticles (NPs) loaded with the EGFR tyrosine kinase inhibitor gefitinib. The results obtained indicate that these NPs interact preferentially with lung cancer cells due to their decoration with p28 peptide. In vitro cytotoxicity assays demonstrate biological activity of the NPs against lung cancer cancer cells. Finally, in vivo studies demonstrated a great potential of the p28-NPs in enhancing the therapeutic effects of gefitinib.

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Algae2Fish Project Featured in PT Newspaper Público

Algae2Fish Project Featured in PT Newspaper Público | iBB | Scoop.it

"This week in the Portuguese newspaper "Público" you will find a summary of the Algae2Fish project, where you can read about the reasons behind the project and its perspectives for the next two years. The team, composed by professor Frederico Ferreira, Dr. Paola Sanjuan Alberte, Dr. Carlos Rodrigues, and Msc Diana Marques, with the support of The Good Food Institute, is currently working to produce the first cell-cultured sea bass fillet!"

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Special Issue: Coral Reef Ecology, Conservation, and Inspiration for Marine Drugs Development

Special Issue: Coral Reef Ecology, Conservation, and Inspiration for Marine Drugs Development | iBB | Scoop.it

Marine invertebrates together with a plethora of symbiotic and free-living algae, fungi and prokaryotes are amidst the most prolific producers of bioactive compounds in coral reefs and marine environments at large. Their natural products often show astounding structural novelty and complexity, facilitating chemically mediated behaviours and interspecies interactions from competition to cooperation. There is great potential for a minimally invasive and economically reliable exploitation of bioactive secondary metabolites from the highly diverse and chemically complex reef communities. iBB researchers Tina Keller-Costa and Rodrigo Costa (BSRG) are guest editing a special issue on Coral Reef Ecology, Conservation and Inspiration for Marine Drugs Development in the Journal Marine Drugs and cordially invite the scientific community to contribute original research or review articles on the role of natural products in coral reef ecology and conservation, organismal interactions and biotechnology.

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Seabass Fillets from 3D-Printed Cells

Seabass Fillets from 3D-Printed Cells | iBB | Scoop.it

The project Algae2Fish led by Frederico Ferreira from SCERG-iBB has received funding from the Global Food Institute with the aim of developing a boneless cultivated seabass fillet. 3D printing technology will be used to produce scaffolds that will give the fillet structure, replicating the fibrous texture of fish. The scaffolds will be formed using material from algae and plants, with the algae contributing valuable omega-3 fatty acids such as those found in conventional fish. Read more about the project here.

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Today’s Pharma and Biotech Projects: A Phased Approach

Today’s Pharma and Biotech Projects: A Phased Approach | iBB | Scoop.it

The general outline of a pharma or biotech engineering project includes phases and tasks that typically span 2–3 years. The concept of phased engineering, procurement, and construction (EPC) is revisited in a paper co-authored by José Cardoso Menezes from BERG-iBB and colleagues and published in Pharmaceutical Engineering. The concept is further updated with risk-based considerations specifically regarding the commissioning, qualification, and validation (CQV) of general life-cycle principles for pharma and biotech projects.

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Acyl-chain Saturation Regulates the Order of Phosphatidylinositol 4,5-bisphosphate Nanodomains

Acyl-chain Saturation Regulates the Order of Phosphatidylinositol 4,5-bisphosphate Nanodomains | iBB | Scoop.it

PI(4,5)P2 is a phospholipid found mostly in the plasma membrane of eukaryotic cells, where it plays a crucial role in processes like vesicle trafficking, cytoskeletal regulation, ion channel function, viral assembly and budding. While most phospholipids show considerable acyl-chain diversity, PI(4,5)P2 lipids are exceptionally enriched in specific acyl-chains, the most frequent composition in mammalian cells being 1-stearoyl-2-arachidonyl (18:0 20:4). The biological functions that call for this specific enrichment are still not fully clear. In a recent paper published in Communications Chemistry, a BSIRG-iBB team led by Fábio Fernandes together with the teams of Dr. Nuno Santos (IMM) and Dr. Manuel Melo (ITQB) identified a previously unreported increase in membrane order upon calcium-dependent PI(4,5)P2 clustering. Remarkably, the interaction of saturated PI(4,5)P2 with calcium culminated in the formation of gel nanodomains for fully saturated PI(4,5)P2, and the formation of these gel domains was abrogated in the presence of 18:0 20:4 polyunsaturated PI(4,5)P2. These results support a role of (18:0 20:4)PI(4,5)P2 in inhibiting the formation of highly ordered PI(4,5)P2 nanodomains in the plasma membrane.

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Quantitative FRET Microscopy Reveals a Crucial Role of Cytoskeleton in Promoting PI(4,5)P2 Confinement

Quantitative FRET Microscopy Reveals a Crucial Role of Cytoskeleton in Promoting PI(4,5)P2 Confinement | iBB | Scoop.it

Phosphatidylinositol 4,5-bisphosphate (PI(4,5)P2) is crucial to many cellular processes in eukaryotes, including membrane trafficking, signal transduction, ion channel function  and cytoskeleton dynamics. This function multiplicity is partially achieved through a dynamic spatiotemporal organization of PI(4,5)P2 within the membrane. In a recent paper published in IJMS, an IBB team (Maria J. Sarmento, Luís Borges-Araújo, Sandra N.Pinto, Nuno Bernardes, Joana Ricardo, Ana Coutinho, Manuel Prieto and Fábio Fernandes) was able to quantify PI(4,5)P2 confinement in living cells making use of FRET imaging measurements. PI(4,5)P2 was found to be significantly compartmentalized at the plasma membrane of HeLa cells. These PI(4,5)P2 enriched domains were shown to not depend on cholesterol content, ruling out an association with lipid rafts. On the other hand, upon inhibition of actin polymerization, compartmentalization of PI(4,5)P2 was almost entirely eliminated, confirming that the cytoskeleton network is the critical component responsible for the formation of nanoscale PI(4,5)P2 domains.

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Application of Perinatal Derivatives in Animal Models on Cutaneous Wound Healing

Application of Perinatal Derivatives in Animal Models on Cutaneous Wound Healing | iBB | Scoop.it

Many studies that apply PnD in pre-clinical cutaneous wound healing models show large variations in the choice of the animal species (e.g., large animals, rodents), the choice of diabetic or non-diabetic animals, the type of injury (full-thickness wounds, burns, radiation-induced wounds, skin flaps), the source and type of PnD (placenta, umbilical cord, fetal membranes, cells, secretomes, tissue extracts), the method of administration (topical application, intradermal/subcutaneous injection, intravenous or intraperitoneal injection, subcutaneous implantation), and the type of delivery systems (e.g., hydrogels, synthetic or natural biomaterials as carriers for transplanted cells, extracts or secretomes). In a collaborative work coordinated by Prof. Pedro Fonte under the COST Action SPRINT (CA17116), the Postdoc researcher Ana Macedo and Master student Francisca Mendes from BERG-iBB, provided a comprehensive and integrative overview of the application of PnD in wound healing to assess its efficacy in preclinical animal models. The review was published in Frontiers in Bioengineering and Biotechnology.

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Miguel Fuzeta to Defend PhD Thesis in Bioengineering

Miguel Fuzeta to Defend PhD Thesis in Bioengineering | iBB | Scoop.it

 Miguel de Almeida Fuzeta will be defending his PhD thesis in Bioengineering on Wednesday the 27th october 2021 at 10:00 h (https://videoconf-colibri.zoom.us/j/81143862412). During the last years, and under the supervision of Cláudia Lobato Silva from SCERG and BERG-IBB and Diana Maria Diez Gaspar from FEUP, Miguel focused his efforts on the development of Bioprocesses for the scalable manufacturing of extracellular vesicles derived from mesenchymal stromal cells. The title of the thesis is “Scalable Production of Extracellular Vesicles Derived from Mesenchymal Stromal Cells for Cancer-Targeted Drug Delivery”.

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The Azurin-Derived Peptide CT-p19LC Exhibits Membrane-Active Properties and Induces Cancer Cell Death

The Azurin-Derived Peptide CT-p19LC Exhibits Membrane-Active Properties and Induces Cancer Cell Death | iBB | Scoop.it

The bacterial protein azurin shows an unexpected therapeutic effect against various types of cancer. This property seems to result from its unique structural and surface features. A 28-residue peptide (named p28) derived from the middle part of azurin has been subjected to various studies and reached two clinical trials phase I in US. In a recent paper published in Biomedicines, a iBB team (Ana Rita Garizo, Lígia Coelho, Sandra Pinto, Tiago Dias, Fábio Fernandes, Nuno Bernardes and Arsénio M Fialho) were able to identified another anticancer bioactive peptide (CT-p19LC) derived from the C-terminal of azurin. CT-p19LC proved to interact preferentially with cancer cells, causing a significative inhibition of cell proliferation in a dose dependent manner. Moreover, it is proposed that the mode of action of CT-p19LC involves perturbation or disruption of cancer cell membranes. Overall this study highlights the relevance of azurin as a source of bioactive peptides with potential application in cancer therapies.

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Exploring N.C.Yeastract to Study Gene and Genomic Regulation in Non Conventional Yeasts

Exploring N.C.Yeastract to Study Gene and Genomic Regulation in Non Conventional Yeasts | iBB | Scoop.it

Responding to the recent interest of the yeast research community in non-Saccharomyces cerevisiae species of biotechnological relevance, the N.C.Yeastract was associated to YEASTRACT+, a curated repository of known regulatory associations between transcription factors (TFs) and target genes in yeasts. A recent Minireview published in FEMS Yeast Research aims to advertise the update of the existing information since the release of N.C.Yeastract in 2019, and to raise awareness in the community about its potential to help the day-to-day work on non-Saccharomyces species, exploring all the information and bioinformatics tools available in YEASTRACT +. Using simple and widely used examples, a guided exploitation is offered. The usage potentialities of the new CommunityYeastract platform by the yeast community are also discussed. The Minireview is coauthored by a BSRG-iBB team coordinated by Isabel Sá-Correia and including Cláudia P. Godinho, Margarida Palma, Miguel C. Teixeira and the PhD students Miguel Antunes and Marta N. Mota, in collaboration with INESC-ID colleagues.

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Nutritional Composition, Bioactivity and Nanoencapsulation of Extracts from Wild Asparagus

Nutritional Composition, Bioactivity and Nanoencapsulation of Extracts from Wild Asparagus | iBB | Scoop.it

The nutritional composition and bioactive properties of roots and rhizomes of Asparagus stipularis were evaluated to demonstrate its potential in the food and pharmaceutical industries. HPLC-DAD-ESI/MS characterization of infusions allowed the identification and quantitation of 7 hydroxycinnamoyl derivatives, with caffeic acid as the most abundant. Roots infusion contained the highest amounts of these compounds. It also exhibited the highest antioxidant activity in all assays, with EC50 values of 0.44 ± 0.01, 0.98 ± 0.03 and 0.64 ± 0.01 mg/mL for DPPH, ABTS and FRAP assays, respectively, with no toxicity towards PLP2 primary cell cultures (GI50 > 400 μg/mL). The extract was encapsulated into PLGA nanoparticles obtaining a size of 260 nm and a polydispersity index around 0.1, with a zeta potential of -36 mV, as well as a good encapsulation efficiency of approximately 83%. The particles had a spherical morphology and smooth surface. FTIR and DSC assays confirmed the efficacy of the encapsulation methodology. This paper was published in Food Bioscience by Pedro Fonte from BERG-iBB in a transnational collaboration with researchers from Portugal, Spain, Italy and Tunisia. The developed systems will be used as delivery systems for bioactive compounds of A. stipularis and as an innovative dietary supplement.

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Nanocarrier-Mediated Topical Insulin Delivery for Wound Healing

Nanocarrier-Mediated Topical Insulin Delivery for Wound Healing | iBB | Scoop.it

Wound care is clinically demanding due to treatment inefficiency and represents an economic burden for healthcare systems. A promising therapeutic strategy is the use of exogenous growth factors that are decreased at the wound site and hence limit recovery of the skin. Insulin is one of the cheapest growth factors in the market able to accelerate the re-epithelialization and stimulate angiogenesis and cell migration. However, the effectiveness of topical insulin in wound healing is hampered by the proteases in the wound bed. The encapsulation into nanoparticles improves its stability in the wound, providing adhesion to the mucosal surface and allowing its sustained release. In a paper published in Materials, Pedro Fonte from BERG-iBB in a collaboration with researchers from CCMAR, University of Algarve and LAQV, University of Porto performed a standing point about a promising strategy to treat different types of wounds by the topical delivery of insulin-loaded nanocarriers.

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