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Proteomic analysis of U251 MG glioblastoma cells in the presence and absence of α-fodrin

ABSTRACT: The cortical cytoskeleton comprises mainly of the spectrin family of proteins. Spectrin and fodrin are members of this family. They support the plasma membrane. Fodrin is expressed in most tissues apart from the erythrocytes. Fodrin has been shown to be important in a wide variety of functions such as signal transduction, cardiac and brain development, etc. Through our studies it was understood that fodrin not only serves as a cortical supporting protein, but it also interacts with γ-tubulin and inhibits its microtubule nucleation activity. To gain a comprehensive view on the diverse functions of fodrin it was imperative to look into the downstream effectors of this protein in an unbiased fashion. Hence, we decided to downregulate α-fodrin in glioblastoma cells U-251 MG, and then perform a global protein expression analysis.

INSTRUMENT(S): Synapt MS

ORGANISM(S): Homo Sapiens (human)

TISSUE(S): Glial Cell, Brain

DISEASE(S): Brain Glioblastoma Multiforme

SUBMITTER: MAHESH CHANDRAN V R

LAB HEAD: Dr.Suparna sengupta

PROVIDER: PXD023457 | Pride | 2021-05-24

REPOSITORIES: Pride

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Project description:Guava Psidium guajava L (Pg) and bhumi amla Phyllanthus amarus Schum. et Thonn (Pa) are well-known plants in traditional medicine. However, the capacity of these plants for improving the immune system of aquatic species has received less attention so far. This study aimed to investigate the effects of single supply or mixture of Pg and Pa extracts on immune responses, disease resistance and liver proteome profiles in striped catfish Pangasianodon hypophthalmus. Fish were fed diets including basal diet 0% or one of three doses of each plant extract, either alone or in mixture, 0.08, 0.2 or 0.5% Pg, Pa or mixture (Pg:Pa, v/v) for 6 weeks. The immune parameters (respiratory burst activity (RBA); nitric oxide synthase (NOS), total immunoglobulin, lysozyme and complement activities) were examined at W3, W6 post-feeding, and after challenge test. The growth parameters and the challenge test with Edwardsiella ictaluri were done at W6. The liver proteome profiles were analysed in W6 at 0.08% and 0.5% of each extract. The results showed that extract-based diets significantly improved growth parameters in the Pg0.2 group compared to control. The cellular immune responses in spleen and the humoral immune responses in plasma were significantly improved in a dose and time-dependent manner. Diets supplemented with single Pg and Pa extracts, and to lesser extent to combined extracts, could significantly decrease the mortality of striped catfish following bacterial infection compared to control. The proteomic results indicated that some pathways related to immune responses, antioxidant and lipid metabolism were enriched in liver at W6. Several proteins (i.e., CD8B, HSP90AA1, HSP90AB1, PDIA3, CASP8, TUBA1C, CCKAR, GNAS, GRIN2D, PLCG1, PRKCA, SLC25A5, VDAC2, ACTN4, GNAI2, LCK, CARD9, NLRP12, and NLRP3) were synergistically upregulated in mixture of Pg and Pa-based diets compared to control and single dietary treatments. Taken together, the results revealed that single Pg and Pa extracts at 0.2 and 0.5% and their mixture at 0.08 and 0.5% have the potential to modulate the immune mechanisms and disease resistance of striped catfish. Moreover, the combination of Pg and Pa in diets suggested positive synergistic effects liver proteome profile related to immune system processes.

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Proteomic analysis of U251 MG glioblastoma cells in the presence and absence of α-fodrin

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