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Identification of adsorbing human plasma proteins on alginate gel beads

ABSTRACT: The biocompatibility of immunoisolation devices is a major challenge for their use in cellular therapies. Utilisation of alginate for the encapsulation of pancreatic islets as a potential cellular therapy for type 1 diabetes has shown to be limited in terms of long-term graft survival, due to pericapsular fibrotic overgrowth. Fibrotic overgrowth is a complex process that involves several factors, including protein adsorption. This work investigates the protein adsorption profiles of plasma incubated alginate beads for the identification of key proteins that may play a role in the biocompatibility of this biomaterial.

INSTRUMENT(S): LTQ Orbitrap Elite

ORGANISM(S): Homo Sapiens (human)

TISSUE(S): Blood Cell, Blood Plasma

SUBMITTER: Animesh Sharma

LAB HEAD: Geir Slupphaug

PROVIDER: PXD009135 | Pride | 2023-03-10

REPOSITORIES: Pride

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			Action	DRS
	20160313_AnneMari_01-t1.raw	Raw
	20160313_AnneMari_01-t2.raw	Raw
	20160313_AnneMari_01_redo-t1.raw	Raw
	20160313_AnneMari_01_redo-t2.raw	Raw
	20160313_AnneMari_02-t1.raw	Raw

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Publications

MS-proteomics provides insight into the host responses towards alginate microspheres.

Coron Abba E AE Fonseca Davi M DM Sharma Animesh A Slupphaug Geir G Strand Berit L BL Rokstad Anne Mari A AMA

Materials today. Bio 20221111

Protein adsorption to biomaterial surfaces is considered a determining factor for the host response. Here we detail the protein adsorption profiles of alginate hydrogel microspheres relevant for cell therapy using mass spectrometry (MS)-based proteomics. The investigated microspheres include sulfated alginate (SA), high G alginate (HiG), and poly-l-lysine coated alginate (AP), which previously have been shown to exhibit different inflammatory and fibrotic responses. The biological significance w ...[more]

PMID: 36420052

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Gene expression in cells encapsulated within different types of alginate microcapsules

Project description:D1 multipotent mesenchymal stromal cells (D1‐MSCs,ATCC® CRL 12424TM) and genetically modified with the lentiviral vector pSIN‐EF2‐Epo‐Pur to express erythropoietin (EPO). D1‐MSCs genetically modified to release EPO were immobilized into 3D alginatepoly‐ L‐lysine‐alginate (APA) microcapsules. Since different formulations of alginate 1.5%, poly‐L‐lysine 0.05%, alginate 0.1% and washings were designed, two types of APA microcapsules were obtained: Biological microcapsules (made of Biological formulations) and Technological microcapsules (made of Technological formulations). The expression of the cells under different conditions of these two types of microcapsules have been analyzed. The present analysis proved that the mechanical properties of the matrix in which cells are enclosed influences drastically gene expression

2017-10-30 | E-MTAB-5786 | biostudies-arrayexpress

Towards optimized tissue regeneration: A new 3D printable bioink of alginate/cellulose hydrogel loaded with thrombocyte concentrate

Project description:Introduction: Autologous platelet concentrates (APC) are pro-angiogenic and can promote wound healing and tissue repair, also in combination with other biomaterials. However, challenging defect situations remain demanding. 3D bioprinting of an APC based bioink encapsulated in a hydrogel could overcome this limitation with enhanced physio-mechanical interface, growth factor retention/secretion and defect-personalized shape to ultimately enhance regeneration. Methods: This study used extrusion-based bioprinting to create a novel bioink of alginate/cellulose hydrogel loaded with thrombocyte concentrate. Chemico-physical testing exhibited an amorphous structure characterized by high shape fidelity. Cytotoxicity assay and incubation of human osteogenic sarcoma cells (SaOs2) exposed excellent biocompatibility. ELISA analysis confirmed pro-angiogenic growth factor release of the printed constructs, and co-incubation with HUVECS displayed proper cell viability and proliferation. Chorioallantoic membrane (CAM) assay explored the pro-angiogenic potential of the prints in vivo. Detailed proteome and secretome analysis revealed a substantial amount and homologous presence of pro-angiogenic proteins in the 3D construct. Results: This study demonstrated a 3D bioprinting approach to fabricate a novel bioink of alginate/cellulose hydrogel loaded with thrombocyte concentrate with high shape fidelity, biocompatibility, and substantial pro-angiogenic properties. Conclusion: This approach may be suitable for challenging physiological and anatomical defect situations when translated into clinical use.

2024-06-23 | PXD050629 | Pride

Dynamic study of In vitro murine follicle maturation in 3% alginate gels

Project description:Multilayer murine follicles were grown in 3% alginate and follicles were isolated for transcriptomics analysis at day 0, 2, 4,5,6,and 8 after encapsulation. This data complements to the GSE42795, where follicles were grown in vitro in 0.5% alginate gels A total of 8 samples were analyzed, each of them repeted in triplicate

2014-06-01 | E-GEOD-55969 | biostudies-arrayexpress

Expression analysis of Sphingomonas. sp A1 AlgO-deficient mutant grown in 0.5% alginate medium or 0.5% yeast extract medium

Project description:Investigation of whole genome gene expression level changes in Sphingomonas. sp A1 AlgO-deficient mutant grown on alginate compared with that on yeast extract AlgO is a possble transcriptional factor described in J. Bacteriol. (2000) 182(14):3998-4004 by Momma K, Okamoto M, Mishima Y, Mori S, Hashimoto W, and Murata K. A two chip study using total RNA recovered from two cultures of Sphingomonas. sp A1 AlgO-deficient mutant grown in 0.5% alginate medium and 0.5% yeast extract medium. Each chip measures the expression level of genes from Sphingomonas. sp A1.

2014-01-28 | E-GEOD-54410 | biostudies-arrayexpress

Expression analysis of motile strain of Sphingomonas sp. A1

Project description:Investigation of whole genome gene expression level in motile strain of Sphingomonas. sp A1 All flagellar genes in motile strain of Sphingomonas. sp A1 are highly transcribed. A two chip study using total RNA recovered from wild-type and motile strains of Sphingomonas. sp A1 grown in 0.5% alginate medium.

2014-11-01 | E-GEOD-62901 | biostudies-arrayexpress

Genome-wide studies of murine ovarian follicle maturation in vitro

Project description:A microarray study to compare gene expression during ovarian follicle development to better understand transcriptional changes during follicular growth. Multi-layered secondary follicles (150-180 M-BM-5m in diameter) were mechanically isolated from ovaries of 16-day old CD-1 mice and individually encapsulated in 0.5% alginate. Follicles were culture for up to 8 days. Day 0 samples correspond to follicles that were isolated and immediately frozen. Samples were collected after 0, 2, 4, 5, 6 and 8 days in culture in triplicate and day 0 was collected 5 times.

2012-12-08 | E-GEOD-42795 | biostudies-arrayexpress

Transcription profiling of human mesenchymal stem cells from adipose tissue grown in normal media in monolayer or with LVG or RGD alignate

Project description:Experiment to see the effect of regular and RGD alginate on MSC derived from bone marrow and adipose tissue

2008-04-01 | E-MEXP-1273 | biostudies-arrayexpress

Expression data of osteoarthritic and healthy human labrum cells

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2014-11-17 | E-GEOD-60762 | biostudies-arrayexpress

LC-MSMS study of hiPSC-derived β-like cells in different 3D Eevironments

Project description:In this project hiPSC-derived β-like cells were studied in two different 3D enviromnets; size-adjusted cell aggregates (using Aggrewell™ plates) and inside alginate capsules. The hiPSC derived from a patient with maturity-onset diabetes of the young 1 (MODY1), which is a monogenic diabetes form, caused by a mutation in the HNF4A gene. We also generated and included a CRISPR/cas9 corrected isogenic control line. Human islets were also included as positive control. In the data analysis we compared to proteome of the cells in 3D environments compared to the frat 2D enviromnet. We found HNF4A mutation specific effects with both distinct 3D environments, where the cells are challenged differentially in term of oxygen, nutrient supply and cell-to-cell contact. We identified HNF4A mutation-specific phenotypes, including a unique proteome signature suggesting metabolic changes in the alginate bead environment, and mutation-specific cellular phenotypes and a unique proteome signature in the aggregation environment.

2022-05-20 | PXD025054 | Pride

Transcription profiling of human 3D cultured chrondrocytes treated with supernatant of synovial fibroblasts from an RA patients vs controls to investigate key regulatory molecules of cartilage destruction in rheumatoid arthritis

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