Inhibition of mTOR delayed but could not prevent experimental collapsing focal segmental glomerulosclerosis
dc.contributor.author | Miesen, L | |
dc.contributor.author | Eymael, J | |
dc.contributor.author | Sharma, S | |
dc.contributor.author | Loeven, MA | |
dc.contributor.author | Willemsen, B | |
dc.contributor.author | Bakker-van Bebber, M | |
dc.contributor.author | Mooren, F | |
dc.contributor.author | Meyer-Schwesinger, C | |
dc.contributor.author | Dijkman, H | |
dc.contributor.author | Wetzels, JFM | |
dc.contributor.author | Jansen, J | |
dc.contributor.author | van der Vlag, J | |
dc.contributor.author | Smeets, B | |
dc.date.accessioned | 2020-11-26T16:26:57Z | |
dc.date.issued | 2020-12 | |
dc.identifier.issn | 2045-2322 | |
dc.identifier.issn | 2045-2322 | |
dc.identifier.other | 8580 | |
dc.identifier.uri | http://hdl.handle.net/10026.1/16682 | |
dc.description.abstract |
<jats:title>Abstract</jats:title><jats:p>Anti-Thy1.1 transgenic mice develop glomerular lesions that mimic collapsing focal segmental glomerulosclerosis (FSGS) in humans with collapse of the glomerular tuft and marked hyperplasia of the parietal epithelial cells (PECs). Immunostaining of phosphor-S6 ribosomal protein (pS6RP) revealed high mTOR activity in PECs of the FSGS lesions of these mice. In this study we questioned whether the mTOR inhibitor rapamycin (sirolimus) could attenuate the development and progression of glomerulosclerotic lesions in the anti-Thy1.1 transgenic mice. We observed reduced mTOR signalling and proliferation in human parietal epithelial cells after rapamycin treatment. Experiments with anti-Thy1.1. mice showed that early treatment with sirolimus reduced the development of glomerular lesions and glomerular cell proliferation at day 4. Levels of albuminuria, podocyte injury and podocyte number were similar in the sirolimus and vehicle treated groups. The initial beneficial effects of sirolimus treatment were not observed at day 7. Late sirolimus treatment did not reduce albuminuria or the progression of glomerulosclerosis. Taken together, rapamycin attenuated PEC proliferation and the formation of early FSGS lesions in experimental FSGS and reduced human PEC proliferation <jats:italic>in vitro</jats:italic>. However, the initial inhibition of PEC proliferation did not translate into a decline of albuminuria nor in a sustained reduction in sclerotic lesions.</jats:p> | |
dc.format.extent | 8580- | |
dc.format.medium | Electronic | |
dc.language | en | |
dc.language.iso | en | |
dc.publisher | Springer Science and Business Media LLC | |
dc.subject | Albuminuria | |
dc.subject | Animals | |
dc.subject | Cell Proliferation | |
dc.subject | Glomerulosclerosis, Focal Segmental | |
dc.subject | Humans | |
dc.subject | Immunosuppressive Agents | |
dc.subject | Male | |
dc.subject | Mice | |
dc.subject | Mice, Inbred C57BL | |
dc.subject | Mice, Transgenic | |
dc.subject | Sclerosis | |
dc.subject | Signal Transduction | |
dc.subject | Sirolimus | |
dc.subject | TOR Serine-Threonine Kinases | |
dc.subject | Thy-1 Antigens | |
dc.title | Inhibition of mTOR delayed but could not prevent experimental collapsing focal segmental glomerulosclerosis | |
dc.type | journal-article | |
dc.type | Journal Article | |
plymouth.author-url | https://www.ncbi.nlm.nih.gov/pubmed/32444668 | |
plymouth.issue | 1 | |
plymouth.volume | 10 | |
plymouth.publication-status | Published online | |
plymouth.journal | Scientific Reports | |
dc.identifier.doi | 10.1038/s41598-020-65352-y | |
plymouth.organisational-group | /Plymouth | |
plymouth.organisational-group | /Plymouth/Faculty of Health | |
plymouth.organisational-group | /Plymouth/Faculty of Health/School of Biomedical Sciences | |
plymouth.organisational-group | /Plymouth/Research Groups | |
plymouth.organisational-group | /Plymouth/Research Groups/Institute of Translational and Stratified Medicine (ITSMED) | |
plymouth.organisational-group | /Plymouth/Research Groups/Institute of Translational and Stratified Medicine (ITSMED)/CBR | |
plymouth.organisational-group | /Plymouth/Users by role | |
plymouth.organisational-group | /Plymouth/Users by role/Academics | |
dc.publisher.place | England | |
dcterms.dateAccepted | 2020-04-30 | |
dc.rights.embargodate | 2020-11-28 | |
dc.identifier.eissn | 2045-2322 | |
dc.rights.embargoperiod | Not known | |
rioxxterms.versionofrecord | 10.1038/s41598-020-65352-y | |
rioxxterms.licenseref.uri | http://www.rioxx.net/licenses/all-rights-reserved | |
rioxxterms.licenseref.startdate | 2020-12 | |
rioxxterms.type | Journal Article/Review |