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LncRNA INPP5F ameliorates stress-induced hypertension via the miR-335/Cttn axis in rostral ventrolateral medulla.
- Source :
-
CNS neuroscience & therapeutics [CNS Neurosci Ther] 2023 Jul; Vol. 29 (7), pp. 1830-1847. Date of Electronic Publication: 2023 Feb 27. - Publication Year :
- 2023
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Abstract
- Aims: The rostral ventrolateral medulla (RVLM) is an essential vasomotor center responsible for regulating the development of stress-induced hypertension (SIH). Long non-coding RNAs (lncRNAs) play critical roles in various physiopathology processes, but existing research on the functions of RVLM lncRNAs on SIH has been lacking. In this study, we investigated the roles of RVLM lncRNAs in SIH.<br />Methods: Genome-wide lncRNA profiles in RVLM were determined by RNA sequencing in a SIH rat model established using electric foot shocks plus noises. The hypotensive effect of lncRNA INPP5F and the underlying mechanisms of lncRNA INPP5F on SIH were explored through in vivo and in vitro experiments, such as intra-RVLM microinjection and immunofluorescence.<br />Results: We discovered 10,179 lncRNA transcripts, among which the lncRNA INPP5F expression level was significantly decreased in SIH rats. Overexpression of lncRNA INPP5F in RVLM dramatically reduced the blood pressure, sympathetic nerve activity, and neuronal excitability of SIH rats. LncRNA INPP5F overexpression markedly increased Cttn expression and reduced neural apoptosis by activating the PI3K-AKT pathway, and its inhibition had opposite effects. Mechanistically, lncRNA INPP5F acted as a sponge of miR-335, which further regulated the Cttn expression.<br />Conclusion: LncRNA INPP5F was a key factor that inhibited SIH progression, and the identified lncRNA INPP5F/miR-335/Cttn/PI3K-AKT/apoptosis axis represented one of the possible mechanisms. LncRNA INPP5F could serve as a therapeutic target for SIH.<br /> (© 2023 The Authors. CNS Neuroscience & Therapeutics published by John Wiley & Sons Ltd.)
- Subjects :
- Rats
Animals
Proto-Oncogene Proteins c-akt metabolism
Phosphatidylinositol 3-Kinases metabolism
Medulla Oblongata metabolism
Blood Pressure
Sympathetic Nervous System metabolism
Cortactin metabolism
Cortactin pharmacology
RNA, Long Noncoding genetics
RNA, Long Noncoding metabolism
Hypertension genetics
Hypertension metabolism
MicroRNAs genetics
MicroRNAs metabolism
Subjects
Details
- Language :
- English
- ISSN :
- 1755-5949
- Volume :
- 29
- Issue :
- 7
- Database :
- MEDLINE
- Journal :
- CNS neuroscience & therapeutics
- Publication Type :
- Academic Journal
- Accession number :
- 36852438
- Full Text :
- https://doi.org/10.1111/cns.14142