The impact of protein corona on the biological behavior of targeting nanomedicines

2022 ◽  
pp. 121458
Author(s):  
Masoud Farshbaf ◽  
Hadi Valizadeh ◽  
Yunes Panahi ◽  
Yousef Fatahi ◽  
Meiwan Chen ◽  
...  
Keyword(s):  
Protein Corona ◽  
Biological Behavior ◽  
The Impact

CASE STUDY ON CIRCUMSCRIBED GLIOMAS, THEIR CLINICOPATHOLOGICAL CORRELATION IN A TERTIARY CARE CENTER

2021 ◽  
pp. 42-45
Author(s):  
Esther Alffi Papang ◽  
K. Rama
Keyword(s):  
Central Nervous System ◽  
Nervous System ◽  
Tertiary Care ◽  
Biological Behavior ◽  
Low Grade ◽  
Lower Grade ◽  
Who Grade ◽  
Primary Tumors ◽  
Short Period ◽  
The Impact

The histogenesis and biological behavior of primary tumors of the central nervous system(CNS) are very diverse. The majority of present gliomas as benign, slow growing lesions classied as by the WHO classicati grade I or II (Low grade gliomas) on of CNS tumors. However, a signicant fraction of gliomas develop over a short period of time and progress rapidly and are therefore classied as WHO grade III or IV(High grade gliomas). Astrocytomas are primary central nervous system tumours that can develop in adults or in children. They arise from the Astrocytes. They can be divided into diffuse that generally have a higher grade and poorer prognosis and those that are localised that tend to be of a lower grade and have a better prognosis. In this study, we outline the basic histological spectrum and features, epidemiological aspects and grade of circumscribed gliomas (localised) or other Astrocytic tumours according to WHO classication . These are the Pilocytic Astrocytoma, Pilomyxoid Astrocytoma, Subependymal giant cell Astrocytoma, Pleomorphic xanthoastrocytoma and Anaplastic astrocytoma . The knowledge of these tumours are important as they are one of the commonest cause of mortality and morbidity in both the young and old, accounting for about 60% of the glial tumours. Therefore neuropathological diagnosis and tumour characteristics will therefore profoundly inuence the impact of treatment strategies.

scholarly journals Osteopontin expression and its relationship with prognostic factors in diffuse large B-cell lymphoma

2019 ◽  
Vol 11 (3) ◽  
Author(s):  
Gilberto Barranco ◽  
Edith Fernández ◽  
Silvia Rivas ◽  
Roxana Quezada ◽  
Dolores Nava ◽  
...  
Keyword(s):  
Prognostic Factors ◽  
B Cell ◽  
Germinal Center ◽  
Cell Lymphoma ◽  
B Cell Lymphoma ◽  
Cox Proportional Hazards ◽  
Biological Behavior ◽  
Large B Cell Lymphoma ◽  
The Impact ◽  
Large B Cell

The aim of this study is to explore the expression of osteopontin (OPN) and its relationship with prognostic factors and survival in diffuse large B cell lymphoma (DLBCL). A tissue microarray was performed for immunohistochemical evaluation. Contingency tables were analyzed for trends; chi-square test was used to determine differences between groups. Univariate and multivariate Cox proportional hazards-regression analyses were performed to evaluate the impact of prognostic factors on survival. Expression of OPN was observed in 28%. It was different in non-germinal center DLBCL (P=0.04). The mean overall survival (OS) was lower in patients with positive OPN expression (19.762; CI 95% 14.269-25.255) it was not significant (P=0.123). It is not possible to establish a clear relationship between the expression by immunohistochemistry of osteopontin and a poor prognosis but it would be important to complement the analysis with other techniques as PCR or NGS that allow us to assess the influence of the isoforms and post-translational modifications of OPN on the biological behavior of DLBCL. Our findings indicate that OPN expression could be associated with a more aggressive variant of lymphoma: non-germinal center DLBCL.

scholarly journals Size Measurement of Extracellular Vesicles and Synthetic Liposomes: The Impact of the Hydration Shell and the Protein Corona

2020 ◽  
Vol 192 ◽  
pp. 111053 ◽  
Author(s):  
Zoltán Varga ◽  
Bence Fehér ◽  
Diána Kitka ◽  
András Wacha ◽  
Attila Bóta ◽  
...  
Keyword(s):  
Extracellular Vesicles ◽  
Hydration Shell ◽  
Protein Corona ◽  
Size Measurement ◽  
The Impact

Surface roughness influences the protein corona formation of glycosylated nanoparticles and alter their cellular uptake

Nanoscale ◽  
2019 ◽  
Vol 11 (48) ◽  
pp. 23259-23267 ◽  
Author(s):  
Alberto Piloni ◽  
Chin Ken Wong ◽  
Fan Chen ◽  
Megan Lord ◽  
Andreas Walther ◽  
...  
Keyword(s):  
Surface Roughness ◽  
Cellular Uptake ◽  
Protein Corona ◽  
Biological Behavior ◽  
Protein Absorption ◽  
Corona Formation

Patterned nanoparticle surfaces can repel protein absorption and prevent the formation of a protein corona, which alters the biological behavior and therefore the fate of the nanoparticle.

scholarly journals Plasma proteins facilitates placental transfer of polystyrene particles

2020 ◽  
Vol 18 (1) ◽  
Author(s):  
Michael M. Gruber ◽  
Birgit Hirschmugl ◽  
Natascha Berger ◽  
Magdalena Holter ◽  
Snježana Radulović ◽  
...  
Keyword(s):  
Human Plasma ◽  
Human Placenta ◽  
Plasma Proteins ◽  
Placental Transfer ◽  
Ex Vivo ◽  
Biological Fluids ◽  
Protein Corona ◽  
Human Albumin ◽  
Placental Perfusion ◽  
The Impact

Abstract Background Nanoparticles, which are exposed to biological fluids are rapidly interacting with proteins and other biomolecules forming a corona. In addition to dimension, charge and material the distinct protein corona influences the interplay of nanoparticles with tissue barriers. In this study we were focused on the impact of in situ formed human plasma protein corona on the transfer of 80 nm polystyrene nanoparticles (PS-particles) across the human placenta. To study materno-to fetal PS transfer we used the human ex vivo placental perfusion approach, which represents an intact and physiological tissue barrier. To analyze the protein corona of PS particles we performed shotgun proteomics of isolated nanoparticles before and after tissue exposure. Results Human plasma incubated with PS-particles of 80 nm and subsequent formed protein corona enhanced the transfer across the human placenta compared to PS-corona formed by bovine serum albumin and dextran which served as a control. Quantitative and qualitative changes of plasma proteins determined the changes in PS transfer across the barrier. Based on the analysis of the PS-proteome two candidate proteins, namely human albumin and immunoglobulin G were tested if these proteins may account for the enhanced PS-transfer across the placenta. Interestingly, the protein corona formed by human albumin significantly induced the transfer of PS-particles across the tissue compared to the formed IgG-corona. Conclusion In total we demonstrate the PS corona dynamically and significantly evolves upon crossing the human placenta. Thus, the initial composition of PS particles in the maternal circulation is not predictive for their transfer characteristics and performance once beyond the barrier of the placenta. The precise mechanism of these effects remains to be elucidated but highlights the importance of using well designed biological models when testing nanoparticles for biomedical applications.

Recent advances in the analysis of nanoparticle-protein coronas

Nanomedicine ◽  
2020 ◽  
Vol 15 (10) ◽  
pp. 1037-1061
Author(s):  
Muhammad Ovais ◽  
Susheel Kumar Nethi ◽  
Saleem Ullah ◽  
Irshad Ahmad ◽  
Sudip Mukherjee ◽  
...  
Keyword(s):  
Protein Corona ◽  
Recent Decade ◽  
The Body ◽  
Pharmacokinetics And Pharmacodynamics ◽  
Physiological Factors ◽  
Characterization Methods ◽  
Biological Fate ◽  
Circulation Distribution ◽  
The Impact

In spite of radical advances in nanobiotechnology, the clinical translation of nanoparticle (NP)-based agents is still a major challenge due to various physiological factors that influence their interactions with biological systems. Recent decade witnessed meticulous investigation on protein corona (PC) that is the first surrounds NPs once administered into the body. Formation of PC around NP surface exhibits resilient effects on their circulation, distribution, therapeutic activity, toxicity and other factors. Although enormous literature is available on the role of PC in altering pharmacokinetics and pharmacodynamics of NPs, understanding on its analytical characterization methods still remains shallow. Therefore, the current review summarizes the impact of PC on biological fate of NPs and stressing on analytical methods employed for studying the NP-PC.

Optimizing the Fluidized Bed Bioreactor as an External Bioartificial Liver

2017 ◽  
Vol 40 (4) ◽  
pp. 196-203 ◽  
Author(s):  
Sarah Figaro ◽  
Ulysse Pereira ◽  
Hiram Rada ◽  
Nicolas Semenzato ◽  
Dominique Pouchoulin ◽  
...  
Keyword(s):  
Fluidized Bed ◽  
Large Scale ◽  
Bioartificial Liver ◽  
Filling Ratio ◽  
Biological Behavior ◽  
Preclinical Studies ◽  
Metabolic Function ◽  
Alginate Solution ◽  
Human Scale ◽  
The Impact

Background Our team previously designed and validated a new bioartificial liver (BAL) called Suppliver based on a Prismaflex™ device, including fluidized bed bioreactors hosting alginate-encapsulated hepatocytes. To ensure correct fluidization within the bioreactor, the beads need to become heavier with the addition of inert glass microspheres. Methods In this study, we assessed the impact of this additional component on the bead production process, bed fluidization, mass transfer and the mechanical properties of the beads, as well as cell viability and basic metabolic function. Results A concentration of 20 mg (1% v/v) of microspheres for 15–20 million cells per milliliter of alginate solution appears to be the best configuration. The filling ratio for the beads in the bioreactors can reach 60%. Four 250-mL bioreactors represent approximately 15% of the hepatocytes in a liver, which is a reasonable target for extracorporeal liver supply. Conclusions Increasing bead density clearly maintained the performances of the fluidized bed with plasma of different compositions, without any risk of release out of the bioreactor. A 1% (v/v)-concentration of microspheres in alginate solution did not result in any alteration of the mechanical or biological behavior. This concentration can thus be applied to the production of large-scale encapsulated biomass for further use of the Suppliver setup in human scale preclinical studies.

scholarly journals Cover Picture: The Protein Corona Mediates the Impact of Nanomaterials and Slows Amyloid Beta Fibrillation (ChemBioChem 5/2013)

ChemBioChem ◽  
2013 ◽  
Vol 14 (5) ◽  
pp. 525-525 ◽  
Author(s):  
Morteza Mahmoudi ◽  
Marco P. Monopoli ◽  
Meisam Rezaei ◽  
Iseult Lynch ◽  
Filippo Bertoli ◽  
...  
Keyword(s):  
Amyloid Beta ◽  
Protein Corona ◽  
The Impact

Vitamin D Promotes Vascular Endothelial Cell Function via the Regulation of miR-199a-5p

2019 ◽  
Vol 9 (12) ◽  
pp. 1662-1669
Author(s):  
Lianman He ◽  
Yong Wang ◽  
Min Liu ◽  
Ling Li
Keyword(s):  
Vitamin D ◽  
Endothelial Cell ◽  
Cell Function ◽  
Vascular Endothelial Cell ◽  
Cell Counting ◽  
Biological Behavior ◽  
Luciferase Reporter ◽  
Vascular Endothelial ◽  
Endothelial Cell Function ◽  
The Impact

Essential hypertension (EH) is a main risk factor for cardiovascular disease. Vitamin D (VD) levels are inversely related to hypertension. MicroRNAs (miRNA or miR) are involved in various diseases, including EH. Till now, the role of miR-199a-5p in EH remains unclear. Cell counting kit-8, flow cytometry and Transwell assay were carried out in the current study to study the effects of VD on the biological behavior of Human umbilical vein endothelial cells (HUVECs). The expression of miR-199a-5p was subsequently determined using reverse transcription-quantitative (RT-q) PCR. TargetScan prediction and double luciferase reporter gene detection were applied to confirm the binding sites between Sirtuin 1 (SIRT1) and miR-199a-5p. The results showed that VD promoted the proliferation and migration of HUVECs and reduced cell apoptosis. VD was observed to significantly reduced miR-199a-5p level in HUVECs. Transfection of the miR-199a-5p mimic was indicated to reverse the influence of VD on the proliferation, migration and apoptosis of HUVECs. SIRT1 was also confirmed to be a target gene of miR-199a-5p. Western blot analysis and RT-qPCR were performed to measure the impact of VD on the SIRT1/AMP-activated protein kinase (AMPK)- /NFB pathway. The results demonstrated that VD increased SIRT1 expression and p-AMPK- and decreased the expression of p-p65, and the transfection of miR-199a-5p mimic reversed these effects. In conclusion, the results of the current study indicated that VD may relieve EH through promoting vascular endothelial cell function via regulating miR-199a-5p.

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