Project description:The giant panda (Ailuropoda melanoleuca) stands as a flagship and umbrella species, symbolizing global biodiversity. While traditional assisted reproductive technology faces constraints in safeguarding the genetic diversity of giant pandas and bolstering the population size of giant pandas, induced pluripotent stem cells (iPSCs) known for their capacity to differentiate into diverse cells types, including germ cells, present a transformative potential for conservation of endangered animals. In our study, we isolated primary fibroblast cells from an individual giant panda and successfully generated giant panda induced pluripotent stem cells (GPiPSCs) through a non-integrating episomal vectors reprogramming method. Characterization of these GPiPSCs revealed their state of primed pluripotency and demonstrated their potential for differentiation. Furthermore, we innovatively formulated a species-specific chemically defined FACL medium and unraveled the intricate signaling pathway networks responsible for maintaining the pluripotency and fostering cell proliferation of GPiPSCs. This study provides key insights into rare species iPSCs, offering materials for panda characteristics research and laying the groundwork for in vitro giant panda gamete generation, potentially aiding endangered species conservation.
Project description:Background:The morphology of vaginal secretions during estrus and diestrus is characteristic and easy to distinguish. There are also significant differences in hormone levels between the two periods in physiological condition. However, the gene changes during estrus cycle especially the two periods are still unclear. Therefore, this study plans to find out the pathway changes related to the estrus cycle of female mice, the expression of various proteins, predict the genes sensitive to hormone changes in vivo through gene analysis of 15 tissues in the two periods and construct of differential gene expression library. Methods:The wildtype healthy female mice in estrus were compared with those in diestrus. The transcriptome changes between the two periods were probed by using high-throughput RNA-seq techniques. Results:A comprehensive mouse transcriptome map in estrus or diestrus across fifteen tissues including aorta, vein, brown adipose tissue, white adipose tissue, heart, kidney, liver, skeletal muscle, stomach, duodenum, cerebrum, hypothalamus, ovary, womb and spleen were provided. Conclusions:This dataset could serve as a baseline resource for investigating the potential gene changes sensitive to the estrus cycle across different tissues and provide the information for screening the key functional genes or molecular markers of estrus cycle.
2022-12-17 | GSE131172 | GEO
Project description:Study vaginal microbiome of giant pandas by metagenomic sequencing.
Project description:In this study, small RNAs were isolated from individual donations of eight forensically relevant biological fluids (blood, semen, vaginal fluid, menstrual blood, saliva, urine, feces, and perspiration) and subjected to next generation sequencing using the Illumina® Hi-Seq platform. Sequencing reads were aligned and annotated against miRbase release 21, resulting in a list of miRNAs and their relative expression levels for each sample analyzed. Body fluids with high bacterial loads (vaginal fluid, saliva, and feces) yielded relatively low annotated miRNA counts, likely due to oversaturation of small RNAs from the endogenous bacteria. Both body-fluid specific and potential normalization miRNAs were identified for further analysis as potential body fluid identification tools for each body fluid. 32 samples - 3-5 replicates of each human biological fluid: venous blood, urine, semen (normal and vasectomized), vaginal secretions, menstrual secretions, perspiration, feces, saliva
Project description:we applied RNA-seq to detect novel expressed transcripts in 12 tissues of giant pandas, using a transcriptome reconstruction strategy combining reference-based and de novo methods. Then we used mass spectrometry method to identify proteomes of five selected tissues, aiming at validating these novel full-length genes we identified.
Project description:We provide proteomes of vaginal fluid in three phases of the estrous cycle – proestrus, estrus and metestrus in six adult females of wild mice Mus musculus musculus. The total of 1167 particular proteins were identified by label-free nano- scale liquid chromatography tandem mass spectrometry (nLC-MS 2 ).