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PRMT6 mediates CSE induced inflammation and apoptosis
Naixing Kang1, Ping Chen1, Yan Chen1
1Department of Respiratory Medicine, The Second Xiangya Hospital, Central-South University, Changsha, Hunan 410011, China.
International Immunopharmacology
|December 8, 2014
Summary
Cigarette smoke extract triggers cell death and inflammation by reducing PRMT6, a key enzyme. PRMT6 levels regulate these effects through histone modification, impacting endothelial cell health.
Area of Science:
- Molecular Biology
- Cell Biology
- Biochemistry
Background:
- Cigarette smoke extract (CSE) is known to induce apoptosis and inflammation in endothelial cells.
- The precise molecular mechanisms underlying CSE-induced cellular damage remain incompletely understood.
- Arginine methyltransferase (PRMT6) plays a role in regulating gene transcription through histone modifications.
Purpose of the Study:
- To investigate the role of PRMT6 in mediating CSE-induced apoptosis and inflammation in human umbilical vein endothelial cells (HUVECs).
- To determine if the histone modification H3R2me2a is involved in the PRMT6-mediated response to CSE.
Main Methods:
- Real-time reverse transcription PCR and Western blotting to quantify apoptosis and inflammation markers.
- Annexin-V staining to assess apoptosis.
- Enzyme-linked immunosorbent assay (ELISA) to detect inflammatory markers.
- Manipulation of PRMT6 expression levels in HUVECs.
Main Results:
- CSE treatment significantly increased apoptosis and inflammation in HUVECs.
- CSE exposure led to a decrease in PRMT6 protein abundance.
- Overexpression of PRMT6 attenuated CSE-induced apoptosis and inflammation.
- Inhibition of PRMT6 exacerbated CSE-induced cellular damage.
- H3R2me2a levels were found to be associated with PRMT6 activity in response to CSE.
Conclusions:
- PRMT6 plays a critical role in regulating CSE-induced apoptosis and inflammation in HUVECs.
- The mechanism involves the modulation of H3R2me2a by PRMT6.
- Targeting PRMT6 may offer a therapeutic strategy for mitigating cigarette smoke-induced endothelial damage.
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