Cardiac microvascular endothelial cells express and release nerve growth factor but not fibroblast growth factor-2.

In Vitro Cellular & Developmental Biology. Animal
Shimon LechtPeter I Lelkes

Abstract

Endothelial cells (ECs) from different vascular beds not only display common characteristics but are also quite heterogeneous in terms of expression and secretion of neuro-angiogenic factors, which may help explain some of their distinct physiological roles. We investigated by RT-PCR the gene expression, by PC12 bioassay the neurotropic activity, and by ELISAs the levels of NGF and FGF-2 using conditioned medium collected from cultures of ECs derived from myocardial and cerebral capillaries. While NGF was expressed and released by both cell types, FGF-2 was expressed and released solely by the brain but not heart ECs. Oxygen-glucose deprivation (ischemic) insult blocked NGF secretion from heart and brain ECs and inhibited by 70% the secretion of FGF-2 from brain ECs. We propose that the differential expression of NGF and FGF-2 in heart and brain EC cultures reflect heterogeneity on demand of the microcapillary components and the surrounding microenvironment for a proper tissue-specific homeostasis.

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Citations

Aug 11, 2012·Journal of Molecular Neuroscience : MN·Aybike SaglamPeter I Lelkes
Jan 15, 2013·Journal of Basic and Clinical Physiology and Pharmacology·Jennifer L StrandePhilip Lazarovici
Apr 14, 2012·Journal of Biomedicine & Biotechnology·Aili GuanJunbo Ge

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