PMID- 33352936 OWN - NLM STAT- MEDLINE DCOM- 20210316 LR - 20240330 IS - 1422-0067 (Electronic) IS - 1422-0067 (Linking) VI - 21 IP - 24 DP - 2020 Dec 18 TI - Linking ABCC6 Deficiency in Primary Human Dermal Fibroblasts of PXE Patients to p21-Mediated Premature Cellular Senescence and the Development of a Proinflammatory Secretory Phenotype. LID - 10.3390/ijms21249665 [doi] LID - 9665 AB - Pseudoxanthoma elasticum (PXE) is a rare autosomal-recessive disorder that is mainly caused by mutations in the ATP-binding cassette sub-family C member 6 (ABCC6) gene. Clinically PXE is characterized by a loss of skin elasticity, arteriosclerosis or visual impairments. It also shares some molecular characteristics with known premature aging syndromes like the Hutchinson-Gilford progeria syndrome (HGPS). However, little is known about accelerated aging processes, especially on a cellular level for PXE now. Therefore, this study was performed to reveal a potential connection between premature cellular aging and PXE pathogenesis by analyzing cellular senescence, a corresponding secretory phenotype and relevant factors of the cell cycle control in primary human dermal fibroblasts of PXE patients. Here, we could show an increased senescence-associated beta-galactosidase (SA-beta-Gal) activity as well as an increased expression of proinflammatory factors of a senescence-associated secretory phenotype (SASP) like interleukin 6 (IL6) and monocyte chemoattractant protein-1 (MCP1). We further observed an increased gene expression of the cyclin-dependent kinase inhibitor (CDKI) p21, but no simultaneous induction of p53 gene expression. These data indicate that PXE is associated with premature cellular senescence, which is possibly triggered by a p53-independent p21-mediated mechanism leading to a proinflammatory secretory phenotype. FAU - Tiemann, Janina AU - Tiemann J AD - Institut fur Laboratoriums-und Transfusionsmedizin, Herz-und Diabeteszentrum Nordrhein-Westfalen, Universitatsklinik der Ruhr-Universitat Bochum, 32545 Bad Oeynhausen, Germany. FAU - Wagner, Thomas AU - Wagner T AD - Institut fur Laboratoriums-und Transfusionsmedizin, Herz-und Diabeteszentrum Nordrhein-Westfalen, Universitatsklinik der Ruhr-Universitat Bochum, 32545 Bad Oeynhausen, Germany. FAU - Lindenkamp, Christopher AU - Lindenkamp C AD - Institut fur Laboratoriums-und Transfusionsmedizin, Herz-und Diabeteszentrum Nordrhein-Westfalen, Universitatsklinik der Ruhr-Universitat Bochum, 32545 Bad Oeynhausen, Germany. FAU - Plumers, Ricarda AU - Plumers R AUID- ORCID: 0000-0003-2265-9415 AD - Institut fur Laboratoriums-und Transfusionsmedizin, Herz-und Diabeteszentrum Nordrhein-Westfalen, Universitatsklinik der Ruhr-Universitat Bochum, 32545 Bad Oeynhausen, Germany. FAU - Faust, Isabel AU - Faust I AUID- ORCID: 0000-0002-2234-9196 AD - Institut fur Laboratoriums-und Transfusionsmedizin, Herz-und Diabeteszentrum Nordrhein-Westfalen, Universitatsklinik der Ruhr-Universitat Bochum, 32545 Bad Oeynhausen, Germany. FAU - Knabbe, Cornelius AU - Knabbe C AD - Institut fur Laboratoriums-und Transfusionsmedizin, Herz-und Diabeteszentrum Nordrhein-Westfalen, Universitatsklinik der Ruhr-Universitat Bochum, 32545 Bad Oeynhausen, Germany. FAU - Hendig, Doris AU - Hendig D AUID- ORCID: 0000-0002-3660-6923 AD - Institut fur Laboratoriums-und Transfusionsmedizin, Herz-und Diabeteszentrum Nordrhein-Westfalen, Universitatsklinik der Ruhr-Universitat Bochum, 32545 Bad Oeynhausen, Germany. LA - eng GR - K107-16/FORUM Research Grant of the Ruhr-University Bochum/ PT - Journal Article DEP - 20201218 PL - Switzerland TA - Int J Mol Sci JT - International journal of molecular sciences JID - 101092791 RN - 0 (ABCC6 protein, human) RN - 0 (Biomarkers) RN - 0 (Cyclin-Dependent Kinase Inhibitor p21) RN - 0 (Lamin Type B) RN - 0 (Multidrug Resistance-Associated Proteins) RN - 0 (RNA, Messenger) RN - 147604-94-2 (Cyclin-Dependent Kinase Inhibitor p27) SB - IM MH - Biomarkers MH - Cellular Senescence/*genetics MH - Cyclin-Dependent Kinase Inhibitor p21/*metabolism MH - Cyclin-Dependent Kinase Inhibitor p27/genetics MH - Dermis/*cytology MH - Fibroblasts/*metabolism MH - Gene Expression MH - Humans MH - Lamin Type B/genetics MH - Multidrug Resistance-Associated Proteins/*deficiency MH - Mutation MH - Phenotype MH - Pseudoxanthoma Elasticum/*etiology/*metabolism/pathology MH - RNA, Messenger PMC - PMC7766446 OTO - NOTNLM OT - cellular senescence OT - pseudoxanthoma elasticum OT - senescence-associated secretory phenotype COIS- The authors declare no conflict of interest. EDAT- 2020/12/24 06:00 MHDA- 2021/03/17 06:00 PMCR- 2020/12/18 CRDT- 2020/12/23 01:02 PHST- 2020/11/18 00:00 [received] PHST- 2020/12/16 00:00 [revised] PHST- 2020/12/17 00:00 [accepted] PHST- 2020/12/23 01:02 [entrez] PHST- 2020/12/24 06:00 [pubmed] PHST- 2021/03/17 06:00 [medline] PHST- 2020/12/18 00:00 [pmc-release] AID - ijms21249665 [pii] AID - ijms-21-09665 [pii] AID - 10.3390/ijms21249665 [doi] PST - epublish SO - Int J Mol Sci. 2020 Dec 18;21(24):9665. doi: 10.3390/ijms21249665.