Activation of ERK/MAPK signaling by MAZ through transcriptional repression of PPP3CA to promote osteoclastogenesis and osteoporosis progression: Functions and mechanisms
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View abstract on PubMed
Summary
This summary is machine-generated.Myc-associated zinc finger protein (MAZ) promotes osteoporosis by inhibiting protein phosphatase 3 catalytic subunit α (PPP3CA) and activating the ERK/MAPK pathway. This MAZ/PPP3CA/ERK-MAPK axis is a potential therapeutic target for osteoporosis.
Area Of Science
- Molecular Biology
- Skeletal Biology
- Biochemistry
Background
- Osteoporosis (OP) is a skeletal disease characterized by reduced bone strength and increased fracture risk.
- Understanding the molecular mechanisms underlying OP is crucial for developing effective treatments.
Purpose Of The Study
- To investigate the role of protein phosphatase 3 catalytic subunit α (PPP3CA) in osteoporosis.
- To elucidate the regulatory mechanisms involving PPP3CA in bone metabolism.
Main Methods
- Bioinformatics analysis to identify OP-associated genes and transcription factors.
- Construction of an osteoporosis mouse model using ovariectomy (OVX).
- In vitro osteoclast differentiation assays using RAW264.7 cells stimulated with RANKL.
Main Results
- PPP3CA expression was decreased in OVX-induced mouse femoral tissues.
- Overexpression of PPP3CA reduced osteoclast differentiation markers (NFATC1, MMP9) and ERK1/2 phosphorylation, inhibiting OP progression.
- Myc-associated zinc finger protein (MAZ) was upregulated in OVX mice, inhibited PPP3CA transcription, and promoted osteoclastogenesis via the ERK/MAPK pathway.
Conclusions
- MAZ promotes osteoclastogenesis and OP progression by transcriptionally inhibiting PPP3CA, thereby activating the ERK/MAPK pathway.
- The MAZ/PPP3CA/ERK-MAPK axis represents a novel mechanism in osteoclastogenesis and a potential therapeutic target for osteoporosis.
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