Dataset Information

Background Proteins in Human Chorionic Gonadotrophin Pharmaceutical Formulations of Different Origin

ABSTRACT: Gonadotrophins, including Human chorionic gonadotrophin (hCG), have been used since and for several decades to treat infertility by ovarian stimulation. The hCG is being extracted from urine of pregnant women and it does inevitably contains other proteins secreted into urine. The presence of other proteins varies from batch to batch and it can be significantly high. Current study investigated the presence of proteins other than hCG in different batches of commercial formulations produced by extraction from urine and by using the recombinant approach. The total protein content varied from batch to batch and a large number of contaminant urinary proteins were identified in all analyzed samples except for the recombinant product

INSTRUMENT(S):

ORGANISM(S): Homo Sapiens (human)

TISSUE(S): Urine

DISEASE(S): Infertility,Disease Free

SUBMITTER: Goran Mitulović

LAB HEAD: Goran Mitulović

PROVIDER: PXD010471 | Pride | 2019-03-21

REPOSITORIES: Pride

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Human chorionic gonadotrophin pharmaceutical formulations of urinary origin display high levels of contaminant proteins-A label-free quantitation proteomics study.

Panić-Janković Tanja T Mitulović Goran G

Electrophoresis 20190325 11

To determine whether there is a measurable protein background in different formulations of urinary and recombinant human chorionic gonadotropin (hCG). Primary outcome measures: identification of contaminant proteins in urinary-derived formulations of hCG; secondary outcome measures: quantitative values of contaminant proteins in different batches of urinary -derived hCG formulations. It was found that urinary-derived batches have high presence of contaminant proteins beside the active substance. ...[more]

PMID: 30883802

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Project description:Goal of the experiment: To examine differential gene expression in granulosa cells of women undergoing ovarian stimulation with either recombinant human follicle stimulating hormone or purified human menopausal gonadotropin for in vitro fertilization. Brief description of the experiment: The study was designed to test the hypothesis that human granulosa cell (GC) gene expression response differs between pure recombinant FSH and human menopausal gonadotropin (hMG) stimulation regimens. Women < 35 years-old undergoing in vitro fertilization for tubal or male factor infertility were prospectively randomized to one of two stimulation protocols, Gonadotropin releasing hormone (GnRH) agonist long protocol plus individualized dosages of (1) recombinant follicle stimulating hormone (rFSH) (Gonal-F®) (n=4) or (2) purified human menopausal gonadotropin (hMG; Menopur®; 75 IU FSH/75 IU LH per vial) (n=3). Follicle development was monitored by ultrasound and serum estradiol levels. When two follicles were ≥ 17mm, human chorionic gonadotropin (hCG) (10,000 IU; Novarel®) was administered. Oocytes were retrieved 35 h post-hCG. Following oocyte recovery, GC were immediately collected in RNALater®. Pooled GC from individual patients were washed, centrifuged over 40% Percoll®, resuspended in RNALater, and snap-frozen in LN. Total RNA was extracted and stored at -70C. Biotinylated cRNA was synthesized from total RNA and each sample was run individually on CodeLink Whole Human Genome Bioarrays (Applied Microarrays). Unnamed genes and genes with <2-fold difference in expression were excluded from further analysis. After exclusions, 1736 genes exhibited differential expression between groups. Over 400 were categorized as signal transduction genes, ~180 as transcriptional regulators, and ~175 as enzymes/metabolic genes. Expression of selected genes was confirmed by RT-PCR. Differentially expressed genes included A kinase anchor protein 11 (AKAP11), bone morphogenic protein receptor II (BMPR2), epidermal growth factor (EGF), insulin-like growth factor binding protein (IGFBP)-4, IGFBP-5, basigin, and hypoxia-inducible factor (HIF)-1 alpha. The results suggest that major differences exist in the mechanism by which pure FSH alone versus FSH/LH regulate gene expression in preovulatory GC that could impact oocyte maturity and developmental competence.

Project description:To explore chorionic gonadotropin (CG)-regulated gene expression in the primate corpus luteum (CL), adult female rhesus macaques were treated with a model of simulated early pregnancy (SEP). Total RNA was isolated from individual CL and hybridized to AffymetrixM-bM-^DM-" GeneChip Rhesus Macaque Genome Arrays The level of 1192 transcripts changed expression > 2-fold (one-way ANOVA, FDR correction; P<0.05) during SEP when compared to Day 10 untreated controls, and the majority of changes occurred between Days 10 and 12 of SEP. To compare transcript levels between SEP rescued and regressing CL, previously banked rhesus GeneChip array data from the mid- to late and very late luteal phase were analyzed with time-matched intervals in SEP. Comparing RMA-normalized transcripts from the natural cycle with those from luteal rescue revealed 7677 transcripts changing in expression pattern >2 fold (one-way ANOVA, FDR correction; P<0.05) between the two groups. Clustering of samples revealed that the SEP samples possessed the most related transcript expression profiles. Regressed CL (days 18-19, around menses) were the most unlike all other CL. The most affected KEGG pathway was Steroid Biosynthesis, and most significantly absent pathways following SEP treatment includes groups of genes whose products promote cell-death. By further comparing the genome-wide changes in luteal gene expression during rescue in SEP, with those in CL during luteolysis in the natural menstrual cycle, it is possible to identify key regulatory pathways promoting fertility. Simulated early pregnancy (SEP) treatment was begun on day 9 as Duffy and Stouffer (1997) by treatment of females with recombinant human chorionic gonadotropin (hCG; NovarelM-bM-^DM-", Ferring Pharmaceuticals Inc. Parsippany, NJ, USA) in increasing dosages (15, 30,45,90,180,360,720,1440, and 2880 IU) twice daily by intramuscular injection. CL were collected by laparotomy on days 10, 12, 15, and 18, representing 1, 3, 6 and 9 days of hCG treatment (n=4 CL/day). Additionally, luteal day 10 untreated CL were collected to serve as baseline controls for SEP CL. All CL were dissected away from luteal tissue, sectioned, and snap-frozen in liquid nitrogen and stored at -80M-BM-0C until RNA and protein isolation by TRIzolM-BM-. extraction (Invitrogen, Carlsbad, CA, USA) according to manufacturerM-bM-^@M-^Ys protocols.

			Action	DRS
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	Chorimone_1.pride.mgf.gz	Mgf
	Chorimone_1.raw	Raw
	Chorimone_2.mgf	Mgf
	Chorimone_2.pride.mgf.gz	Mgf