AB158. Intracellular calcium concentration of corpus cavernosum smooth muscle cells is decreased by the over-expression of PnNOS gene in adipose tissue-derived stem cells
Laboratory Study, published in Transl Androl Urol (2014) — summary generated from the PubMed abstract.
Evidence from laboratory and animal studies provides groundwork for understanding mechanisms and potential before human studies continue.
- Level A · Stronger Clinical Evidence
- Level B · Emerging clinical evidence with positive signals
- Level C · Early human research exploring benefits
- Level D · Scientific groundwork from lab and animal studies
- Emerging · Emerging topic under active research
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- Study type
- Laboratory Study
- Journal
- Transl Androl Urol (2014)
- Reported sample size
- —
- Source database
- Europe PMC
- PMCID
- PMC4708504
Abstract (original English)
To investigate the effects of adipose tissue-derived stem cells (ADSCs) modified with penile neuronal nitric oxide synthase (PnNOS) gene on intracellular calcium concentration in rat corpus cavernosum smooth muscle cells (CCSMCs). ADSCs and CCSMCs of Sprague Dawley (SD) rat were isolated and cultured in vitro, respectively. Rat PnNOS gene were transferred into ADSCs mediated by recombinant adenovirus vector. The expression of PnNOS gene was detected. At the same time, the concentration of nitric oxide (NO) and cyclic guanosine monophosphate (cGMP) were assayed. After co-culturing with CCSMCs of SD rats which were isolated and expanded ex vivo, the cGMP and NO levels of ADSCs and CCSMCs were measured. Intracellular calcium concentration ([Ca]i) in rat CCSMCs was measured with Fluo-3/AM by flow cytometer after co-cultured with ADSCs over-expressing PnNOS gene. The mRNA and protein expression of PnNOS gene mediated by recombinant adenovirus vector significantly over-expressed and lasted at least 2 weeks. Meanwhile, the concentration of NO and cGMP in ADSCs were greatly elevated. The concentration of cGMP was significantly increased and [Ca]i was obviously decreased in CCSMCs compared with the control groups (P<0.05) after co-cultured with ADSCs for 3 days. These findings demonstrated that ADSCs over-expressing PnNOS gene might decrease [Ca]i in CCSMCs by up-regulating NO-cGMP sign
What this study does not prove
- • This study does not prove SVF is an approved treatment or a replacement for standard care.
- • This is preclinical work; animal or laboratory results cannot be applied to humans.
Evidence level
Evidence from laboratory and animal studies provides groundwork for understanding mechanisms and potential before human studies continue.
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