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Avaxia_InGelDigest_Pancreatin digest products of bovine Ig

ABSTRACT: Analysis of bovine immunoglobulins from serum or colostrum after treatment with simulated intestinal fluid containing pancreatin

INSTRUMENT(S): Q Exactive

ORGANISM(S): Bos Taurus (bovine)

TISSUE(S): B Cell, Colostrum

DISEASE(S): Disease Free

SUBMITTER: Randall Burton

LAB HEAD: Randall Edward Burton

PROVIDER: PXD019768 | Pride | 2020-07-29

REPOSITORIES: Pride

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			Action	DRS
	060614_470_17kD.raw	Raw
	060614_470_40kD.raw	Raw
	060614_470_8kD.raw	Raw
	FileName_060614_470_17kD.rawF012273.mzid.gz	Mzid
	FileName_060614_470_17kD.rawF012273.mzid_File_Name__060614_470_17kD.raw_F012273.MGF	Mzid

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Publications

Structural features of bovine colostral immunoglobulin that confer proteolytic stability in a simulated intestinal fluid.

Burton Randall E RE Kim Skaison S Patel Rutvij R Hartman Deborah S DS Tracey Daniel E DE Fox Barbara S BS

The Journal of biological chemistry 20200714 34

Bovine colostral antibodies, purified from cow's milk produced immediately after calving, have enhanced resistance to degradation by intestinal proteases relative to antibodies from human or bovine serum, making them of particular interest as orally administered therapeutic agents. However, the basis of this resistance is not well defined. We evaluated the stability of AVX-470, a bovine colostral anti-tumor necrosis factor (TNF) polyclonal antibody used in early clinical studies for treatment of ...[more]

PMID: 32665404

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Protein profiling of bovine colostrum and transition milk

Project description:The protein profile of bovine milk serum was characterised as milk transitions from colostrum to transition milk over the first 5 days of lactation. Samples were collected from first and third parity cows at days 0, 2, 5 (D0, D2, D5) after calving. Following isolation of the milk serum fraction, label-free quantitative proteomics was carried out following normalisation by total protein concentration. Protein profiles indicated samples clustered by day postpartum, but not by parity. Proteins (n = 471) were identified and relative quantification was performed, with 199 protein groups showing altered abundance by day of lactation (fold change ≥ 2, P < 0.05). Elevated levels of immune proteins, including immunoglobulins and complement proteins were detected in colostrum with levels significantly decreasing by D2. These findings provide an outline of the dynamics of the protein profile of bovine milk and colostrum in early lactation.

2023-09-25 | PXD044877 | Pride

Toxicity of LCDD monoclonal Ig free light chains on renal glomeruli

Project description:We analyzed the transcriptome (RNA-seq) of glomeruli in a mouse model of light chain deposition disease (LCDD) as compared to control mice (WT and DH-LMP2A, the latter producing no complete immunoglobulins, only free Ig light chains). Kidney lesions in LCDD are due to the deposition of an abnormal monoclonal free Ig light chain and comprise progressive thickening of basement membranes (tubular and glomerular) and nodular glomerulosclerosis resembling the lesions observed in diabetic nephropathy. The aim of the present study is to analyse the transcriptomic changes at early steps of glomerulosclerosis.

2020-05-14 | GSE119049 | GEO

Dietary protein in vitro digest (LC-MS)

Project description:16 dietary protein preparations were digested according to a standardized invitro digestion (InfoGest) protocol, simulating gastrointestinal digestion. Resulting oligopeptide mixtures were subsequently analyzed by UPLC-MS using DDA shot-gun detection. Peak intensity data from MS1 spectra were obtained using Progenesis QI. MS1 peak data were matched and filtered based on overlap with the reference digest of Whey protein using a custom made script in R. MSMS fragmentation spectra were converted to .mgf format and de novo interpreted using SearchGUI 3.3.17 and RapidNOVOR algorithm. Raw data, peak intensity tables and de novo interpretaion data are provided.

2021-09-09 | PXD021577 | Pride

Intrinsic toxicity of LCDD monoclonal Ig free light chain on plasma cells (PC)

Project description:We analyzed the transcriptome (RNA-seq) of mouse plasma cells (PC) expressing a human Ig light chain from a patient suffering light chain deposition disease (LCDD) as compared to control plasma cells (WT and DH-LMP2A, the latter producing no complete immunoglobulins, only free Ig light chains). Ig light chains causing LCDD present structural peculiarities leading to their aggregation and deposition into tissues and organs, mainly the kidney. We sought to determine if plasma cells producing these abnormal Ig could present specific phenotypes. The aim of the present study is to analyse the transcriptomic signature of plasma cells producing abnormal Ig free light chains.

2020-05-14 | GSE119048 | GEO

DIDS protects against neuronal injury

Project description:Using long-oligo beadschip arrays, we examined the global gene expression profile in cultured hippocampal slices under the simulated ischemic condition with and without the presence of DIDS . Control-ACSF: cultured hippocampal slices were incubated with ACSF for 2 hours and were analysed on whole-genome expression chips to determine the gene expression profile. This group was used as controls for IS-treated groups and ACSF+DIDS-treated grous. IS: cultured hippocampal slices were treated wtih IS for 2 hours and the gene expression was analyzed and compared with the control group. IS+DIDS: cultured slices were treated with both IS and DIDS for 2 hours and the gene expression profile was determined. Differentially expression genes were identified by comparing with IS group. ACSF+DIDS: cultured slices were incubated with both ACSF and DIDS for 2 hours and gene expression profile was determined. This group was used as a control for IS+DIDS group. ACSF: artificial cerebral spinal fluid DIDS: 4,4'-diisothiocyanatostilbene-2,2'-disulfonic acid IS: ischemic solution

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Evaluation of bovine colostrum extracellular vesicles on NASH mouse model

Project description:The potential of orally administered colostrum-derived EVs to regulate gut microbiota dysbiosis and prevent non-alcoholic steatohepatitis was evaluated. The results demonstrated that colostrum-derived EVs improved steatosis, fibrosis, and inflammation. Transcriptome analysis showed decreased lipid metabolism, bacterial response, and inflammatory responses in the intestine, and reduced inflammatory and fibrosis-related pathways in the liver. Gut microbiota and metabolite analysis revealed an increased abundance of Akkermansia and elevated cholesterol excretion. Additionally, treatment with colostrum-derived EVs increased the production of tight junction proteins and mucin in the intestine. These findings suggest that increased Akkermansia due to colostrum-derived EVs improves intestinal inflammation and barrier function, preventing endotoxin translocation to the liver and thereby reducing liver inflammation and fibrosis.

2024-08-01 | GSE273582 | GEO

Solid digest

Project description:Solid digest Raw sequence reads

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Genome wide transcriptome analysis provides bases on colonic mucosal immune system development in neonatal calves affected by colostrum feeding strategies in neonatal calves

Project description:Delivery of colostrum within the first several hours after birth is vital for establishing successful passive immunity in neonatal dairy calves. However, it is unclear whether the difference in colostrum feeding strategy can affect the development of the calf gastrointestinal tract. The aim of this study was to evaluate the effect of colostrum feeding time within the first 12 h after birth on the colonic mucosal immune system in neonatal calves using a genome wide transcriptome analysis.RNA sequencing based transcriptome analysis of colon tissues collected from twenty-seven male Holstein calves which were randomly assigned to one of three colostrum feeding strategies (immediately after birth (TRT0); 6 h after birth (TRT6); 12 h after birth (TRT12)) and were euthanized at 51 h of age detected 15935 ± 210, 15332 ± 415, and 15539 ± 440 expressed genes in groups, respectively. The core transcriptome of the colon in dairy calves included 12,678 genes, with enriched “cellular process” and “metabolic process” as the top three biological functions. Expression of 802 immune related genes were detected in the colon tissue. Principal component analysis of the transcriptomes did not display a clear separation by colostrum feeding strategy, and differential abundance analyses showed no significant difference in the expression of immune related genes among the treatments.Transcriptome analysis indicates that the development of the colonic mucosal immune system in neonatal calves may be independent of the timing of initial colostrum meal within 12 h after birth.

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