Dataset Information

Proteomics data of mouse skeletal muscles (microgravity exposure)

ABSTRACT: This project is “Medical proteome analysis of osteoporosis- and bone mass-related proteins using the Kibo Japanese Experiment Module of International Space Station (ISS)”. Applying proteomic technologies, this research aims to identify proteins involved in space flight-induced osteopenia as well as osteoporosis occurring on the ground by searching serum, bone and skeletal muscle (soleus, extensor digitorum longus) proteomes. The goal of this study is to get better understanding to protect the health of both astronauts and osteoporosis patients. Proteome analyses of skeletal muscles from 12 male C57BL/6J mouse (microgravity with fructo-oligosaccharide (FOS) ingestion, microgravity without FOS ingestion, artificial 1 g with FOS ingestion,and artificial 1 g without FOS ingestion, [n=3, respectively]) were carried out tryptic digestion followed by LC-MS/MS analysis (DDA). The obtained results were searched against UniProt DB by Mascot, and the identified peptides were filtered at 1% FDR threshold by searching against the randomized decoy DB.

ORGANISM(S): Mus Musculus (mouse)

SUBMITTER: Hisashi Hirano

PROVIDER: PXD021550 | JPOST Repository | Fri Jul 30 00:00:00 BST 2021

REPOSITORIES: jPOST

ACCESS DATA

Publications

Effects of microgravity exposure and fructo-oligosaccharide ingestion on the proteome of soleus and extensor digitorum longus muscles in developing mice.

Ohira Takashi T Ino Yoko Y Kimura Yayoi Y Nakai Yusuke Y Kimura Ayuko A Kurata Yoichi Y Kagawa Hiroyuki H Kimura Mitsuo M Egashira Kenji K Matsuda Chie C Ohira Yoshinobu Y Furukawa Satoshi S Hirano Hisashi H

NPJ microgravity 20210917 1

Short-chain fatty acids produced by the gut bacterial fermentation of non-digestible carbohydrates, e.g., fructo-oligosaccharide (FOS), contribute to the maintenance of skeletal muscle mass and oxidative metabolic capacity. We evaluated the effect of FOS ingestion on protein expression of soleus (Sol) and extensor digitorum longus muscles in mice exposed to microgravity (μ-g). Twelve 9-week-old male C57BL/6J mice were raised individually on the International Space Station under μ-g or artificial ...[more]

PMID: 34535681

Similar Datasets

Project description:Prolonged skeletal unloading through bedrest results in bone loss similar to that observed in elderly osteoporotic patients, but with an accelerated timeframe. This rapid effect on weight-bearing bones is also observed in astronauts who lose up to 2% of their bone mass per month spent in Space. Despite important implications for Spaceflight travellers and bedridden patients on Earth, the exact mechanisms involved in disuse osteoporosis have not been elucidated. Parathyroid hormone-related protein (PTHrP) regulates many physiological processes including skeletal development, and has been proposed as a gravisensor. To investigate the role of PTHrP in microgravity-induced bone loss, trabecular osteoblasts (TOs) from Pthrp+/+ and -/- mice were exposed to simulated microgravity for 6 days. Viability of TOs decreased in inverse proportion to PTHrP expression levels. Microarray analysis of Pthrp+/+ TOs after 6 days at 0g revealed expression changes in genes encoding prolactins,apoptosis and survival molecules, bone metabolism and extra-cellular matrix composition proteins, chemokines, IGF family and Wnt-related signalling molecules. Importantly, 88% of 0g-induced expression changes in Pthrp+/+ cells overlap those observed in Pthrp-/- cells in normal gravity. Pulsatile treatment with PTHrP1-36 peptide during microgravity exposure reversed a large proportion of 0g-induced changes in Pthrp+/+ TOs. Our results confirm PTHrP efficacy as an anabolic agent to prevent microgravity-induced cell death in TOs. Total RNA samples extracted from Pthrp+/+and -/- trabecular osteoblasts (TOs) exposed for 6 days to simulated 0g in Synthecon rotating cell, or left 6 days in culture at 1g. Cells had either been treated with a pulsatile treatment (2 h/day) of PTHrP1-36 peptide (10-8M) or received a change in growth medium. In total: 8 different conditions with 2 replicates each, i.e. Pthrp+/+ TOs at 0g or 1g with or without PTHrP1-36 treatment, and Pthrp-/- TOs at 0g or 1 g,with or without PTHrP1-36 treatment.

Project description:Large-scale transcriptional profiling has enormous potential for discovery of osteoporosis susceptibility genes and for identification of the molecular mechanisms by which these genes and associated pathways regulate bone maintenance and turnover. A potential challenge in the use of this method for the discovery of osteoporosis genes is the difficulty of obtaining bone tissue samples from large numbers of individuals. In this study, we tested the applicability of using peripheral blood mononuclear cell (PBMC)-derived transcriptional profiles as a surrogate to cortical bone transcriptional profiles to address questions of skeletal genetics. We used a well-established and genetically well-characterized nonhuman primate model for human bone maintenance and turnover. We determined that a high degree of overlap exists in gene expression of cortical bone and PBMCs and that genes in both the osteoporosis-associated RANK Osteoclast and Estrogen Receptor Signaling pathways are highly expressed in PBMCs. Genes within the Wnt Signaling pathway, also implicated in osteoporosis pathobiology, are expressed in PBMCs, albeit to a lesser extent. These results are the first in an effort to comprehensively characterize the relationship between the PBMC transcriptome and bone M-bM-^@M-^S knowledge that is essential for maximizing the use of PBMCs to identify genes and signaling pathways relevant to osteoporosis pathogenesis. It is also a first step in identifying genes that correlate in a predictable manner between PBMCs and cortical bone from healthy and osteoporotic individuals, potentially allowing us to identify genes that could be used to diagnose osteoporosis prior to detectible bone loss and with easily obtained PBMCs. Total RNA was isolated from peripheral blood mononuclear cells and cortical bone of a nonhuman primate model (Papio hamadryas ssp.) of bone maintenance and turnover. Both samples were taken from the same animal. Tissue from 15 animals was used for the study.

Dataset Information

Proteomics data of mouse skeletal muscles (microgravity exposure)

Publications

Effects of microgravity exposure and fructo-oligosaccharide ingestion on the proteome of soleus and extensor digitorum longus muscles in developing mice.

Similar Datasets

OmicsDI is part of the ELIXIR infrastructure