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PXD042803-1

PXD042803 is an original dataset announced via ProteomeXchange.

Dataset Summary
TitleThe Effect of Tamoxifen on Proteome Expression During in vitro Myogenesis in Murine Skeletal Muscle C2C12 Cells
DescriptionTamoxifen, a selective estrogen receptor modulator (SERM), is commonly used in the treatment of hormone-responsive cancers. The effects of tamoxifen in anabolic tissues harboring estrogen-receptors, such as skeletal muscle, are poorly understood. As estrogen and estrogen receptors play an important role in skeletal muscle development and repair, we hypothesize that tamoxifen may have specific effects on myogenesis, the developmental process underlying muscle cells differentiation and repair. Myogenesis is characterized by fine-tuned changes in protein expression as embryonic myoblasts and adult satellite cells transition from pluripotent stem cells to multinucleated, contractile muscle fibers: we undertake a quantitative proteomic analysis of tamoxifen-induced changes in developing skeletal muscle cells which we expect may also shed light on the effect of tamoxifen on muscle repair. We report a tandem mass-tag (TMT) approach to tamoxifen-treated myogenesis in C2C12 cells, a well-characterized model of in vitro murine skeletal muscle differentiation. A longitudinal analysis of >10,000 proteins identified in C2C12 myogenesis revealed a novel subset of 1,239 myogenically-regulated proteins. This set of regulatory proteins clustered into five distinct longitudinal expression trends which significantly overlap those obtained in similar analyses performed in human myocytes. A longitudinal analysis of myogenesis in the presence of tamoxifen, when contrasted with a similar analysis in untreated myogenesis finds that while the vast majority of myogenically-regulated proteins were unaffected by tamoxifen treatment, specific pathways and networks are affected. We document a specific functional enrichment for adiponectin-signaling, whereby a set of 198 proteins were differentially expressed relative to controls at one or more stages of myogenesis, the majority of which were involved in steroid biosynthesis, lipid storage and/or metal ion homeostasis. Interestingly, the only protein that was differentially expressed in the tamoxifen-treated cells at every stage of myogenesis was metallothionein-1 (MT1). Elevated levels of MT1 have been correlated with tamoxifen resistance and increased patient mortality and relapse in breast cancer, as well as with cachexia and muscle atrophy in rodent models. Increased MT1 expression levels may contribute to the musculoskeletal effects reported by patients undergoing tamoxifen treatment. Finally, we present a powerful, self-validating pipeline for analyzing the total proteomic response to in vitro treatment across every stage of muscle cells development which can be easily adapted to study the effects of other drugs on myogenesis.
HostingRepositoryMassIVE
AnnounceDate2023-09-06
AnnouncementXMLSubmission_2023-09-06_09:33:44.732.xml
DigitalObjectIdentifier
ReviewLevelNon peer-reviewed dataset
DatasetOriginOriginal dataset
RepositorySupportSupported dataset by repository
PrimarySubmitterMark Adamo
SpeciesList scientific name: Mus musculus; common name: house mouse; NCBI TaxID: 10090;
ModificationListCarbamidomethyl; Oxidation; TMT6plex
InstrumentOrbitrap Fusion
Dataset History
RevisionDatetimeStatusChangeLog Entry
02023-06-07 12:00:01ID requested
12023-09-06 09:33:45announced
Publication List
no publication
Keyword List
submitter keyword: tamoxifen, myogenesis, SERM, anabolic, estrogen, muscle, C2C12, adiponectin, MT1, steroid
Contact List
Stylianos P. Scordilis
contact affiliationSmith College
contact emailsscordil@science.smith.edu
lab head
Mark Adamo
contact affiliationDartmouth College
contact emailmark.e.adamo@dartmouth.edu
dataset submitter
Full Dataset Link List
MassIVE dataset URI
Dataset FTP location
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