Anti-FABP7 polyclonal antibody

Reported pig induced pluripotent stem cells (piPSCs) have shown either a bFGF-dependent state with human embryonic stem cell (ESC) and mouse epiblast stem cell (EpiSC) morphology and molecular features or piPSCs exist in a LIF-dependent state and resemble fully reprogrammed mouse iPSCs. The features of authentic piPSCs and molecular events during the reprogramming are largely unknown. In this study, we assessed the transcriptome profile of multiple piPSC lines derived from different laboratories worldwide and compared to mouse and human iPSCs to determine the molecular signaling pathways that might play a central role in authentic piPSCs. The results demonstrated that the up-regulation of endogenous epithelial cells adhesion molecule (EpCAM) was correlated with the pluripotent state of pig pluripotent cells, which could be utilized as a marker for evaluating pig cell reprogramming. Comparison of key signaling pathways JAK-STAT, NOTCH, TGFB1, WNT and VEGF in pig, mouse and human iPSCs showed that the core transcriptional network to maintain pluripotency and self-renewal in pig were different from that in mouse, but had significant similarities to human. Pig iPSCs, which lacked expression of specific na < ve state markers KLF2/4/5 and TBX3, but expressed the primed state markers of Otx2 and Fabp7, share defining features with human ESCs and mouse EpiSCs. The cluster of imprinted genes delineated by the delta-like homolog 1 gene and the type III iodothyronine deiodinase gene (DLK1-DIO3) were silenced in piPSCs as previously seen in mouse iPSCs that have limited ability to contribute to chimaeras. These key differences in na < ve state gene and imprinting gene expression suggests that so far known piPSC lines may be more similar to primed state cells. The primed state of these cells may potentially explain the rare ability of piPSCS to generate chimeras and cloned offspring.

Background: The underlying pathways that drive retinal neurogenesis and synaptogenesis are still relatively poorly understood. Protein expression analysis can provide direct insight into these complex developmental processes. The aim of this study was therefore to employ proteomic analysis to study the developing chick retina throughout embryonic ( E) development commencing at day 12 through 13, 17, 19 and post-hatch ( P) 1 and 33 days. Results: 2D proteomic and mass spectrometric analysis detected an average of 1514 spots per gel with 15 spots demonstrating either modulation or constitutive expression identified via MS. Proteins identified included alpha and beta-tubulin, alpha enolase, B-creatine kinase, gamma-actin, platelet-activating factor (PAF), PREDICTED: similar to TGF-beta interacting protein 1, capping protein ( actin filament muscle Z line), nucleophosmin 1 (NPM1), dimethylarginine dimethylaminohydrolase, triosphoaphate isomerase, DJI, stathmin, fatty acid binding protein 7 (FABP7/B-FABP), beta-synuclein and enhancer of rudimentary homologue. Conclusion: This study builds upon previous proteomic investigations of retinal development and represents the addition of a unique data set to those previously reported. Based on reported bioactivity some of the identified proteins are most likely to be important to normal retinal development in the chick. Continued analysis of the dynamic protein populations present at the early stages and throughout retinal development will increase our understanding of the molecular events underpinning retinogenesis.