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cGMP Signaling: From Bench to Bedside

A special issue of International Journal of Molecular Sciences (ISSN 1422-0067). This special issue belongs to the section "Molecular Biology".

Deadline for manuscript submissions: 20 July 2025 | Viewed by 2554

Special Issue Editor


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Guest Editor
Department of Internal Medicine/Cardiology, UT-Houston McGovern Medical School, Houston, TX, USA
Interests: cGMP signaling; sGC activity and regulation; NO/cGMP

Special Issue Information

Dear Colleagues,

Soluble guanylyl cyclase (sGC) was originally discovered as a cellular receptor for gaseous secondary messenger Nitric Oxide (NO). Upon binding of the NO molecule to sGC heme, the sGC enzyme activates the conversion of GTP to ubiquitous secondary messenger cGMP thereby multiplying and propagating downstream signaling of the cascade. Since the original discovery of sGC’s role in vascular regulation, NO/cGMP-signaling importance was demonstrated in a multitude of physiological and pathophysiological processes. The critical role sGC plays in the homeostasis of the cardiovascular, pulmonary, gastrointestinal, renal and neuronal systems established this enzyme as a prominent therapeutic target. Currently, a growing number of sGC-targeting drugs to combat various diseases has been identified and tested in various disease models or clinical trials.

This Special Issue will explore emerging applications of sGC targeted therapeutics to modulate NO/cGMP signaling activity to tackle an array of new diseases such as ischemia, fibrosis and cancer proliferation, to name a few. Research articles/reviews related to this topic are welcome in this issue.

Dr. Iraida Sharina
Guest Editor

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Keywords

  • nitric oxide
  • cellular signaling
  • cardiovascular biology
  • cerebrovascular regulation
  • aging

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Published Papers (2 papers)

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Research

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13 pages, 4818 KiB  
Article
The α1- and β1-Subunits of Nitric Oxide-Sensitive Guanylyl Cyclase in Pericytes of Healthy Human Dental Pulp
by Yüksel Korkmaz, Galyna Pryymachuk, Mechthild M. Schroeter, Behrus Puladi, Nadin Piekarek, Sarah Appel, Wilhelm Bloch, Jan-Wilm Lackmann, James Deschner and Andreas Friebe
Int. J. Mol. Sci. 2025, 26(1), 30; https://doi.org/10.3390/ijms26010030 - 24 Dec 2024
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Abstract
Nitric oxide-sensitive guanylyl cyclase (NO-GC) is a heterodimeric enzyme with an α- and a β-subunit. In its active form as an α1β1-heterodimer, NO-GC produces cyclic guanosine-3′,5′-monophophate (cGMP) to regulate vasodilation and proliferation of vascular smooth muscle cells (VSMCs). In [...] Read more.
Nitric oxide-sensitive guanylyl cyclase (NO-GC) is a heterodimeric enzyme with an α- and a β-subunit. In its active form as an α1β1-heterodimer, NO-GC produces cyclic guanosine-3′,5′-monophophate (cGMP) to regulate vasodilation and proliferation of vascular smooth muscle cells (VSMCs). In contrast to VSMCs, only a few studies reported on the expression of the NO-GC α1β1-heterodimer in human pericytes. Since NO-GC is a marker for platelet-derived growth factor-β (PDGFRβ)-positive pericytes, we investigated whether NO-GC is expressed in its active α1β1-heterodimer in pericytes of healthy human dental pulp. In our previous studies, we developed and validated an antibody against the α1-subunit of human NO-GC. Here, we developed a new antibody against the β1-subunit of human NO-GC and validated it by immunoblot, mass spectrometry, and immunohistochemistry on tissue samples from humans and NO-GC knockout (GCKO) mice. Using both antibodies, we detected α1- and β1-subunits of NO-GC in pericytes of pre-capillary arterioles, capillaries, and post-capillary venules in dental pulp of decalcified and non-decalcified human molars. We concluded that NO-GC as an active α1β1-heterodimer may be involved in the regulation of vascular permeability, vascular stability, organ homeostasis, and organ regeneration in healthy human dental pulp. Full article
(This article belongs to the Special Issue cGMP Signaling: From Bench to Bedside)
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Review

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25 pages, 3622 KiB  
Review
Challenging the Norm: The Unrecognized Impact of Soluble Guanylyl Cyclase Subunits in Cancer
by María Teresa L. Pino, María Victoria Rocca, Lucas H. Acosta and Jimena P. Cabilla
Int. J. Mol. Sci. 2024, 25(18), 10053; https://doi.org/10.3390/ijms251810053 - 19 Sep 2024
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Abstract
Since the discovery of nitric oxide (NO), a long journey has led us to the present, during which much knowledge has been gained about its pathway members and their roles in physiological and various pathophysiological conditions. Soluble guanylyl cyclase (sGC), the main NO [...] Read more.
Since the discovery of nitric oxide (NO), a long journey has led us to the present, during which much knowledge has been gained about its pathway members and their roles in physiological and various pathophysiological conditions. Soluble guanylyl cyclase (sGC), the main NO receptor composed of the sGCα1 and sGCβ1 subunits, has been one of the central figures in this narrative. However, the sGCα1 and sGCβ1 subunits remained obscured by the focus on sGC’s enzymatic activity for many years. In this review, we restore the significance of the sGCα1 and sGCβ1 subunits by compiling and analyzing available but previously overlooked information regarding their roles beyond enzymatic activity. We delve into the basics of sGC expression regulation, from its transcriptional regulation to its interaction with proteins, placing particular emphasis on evidence thus far demonstrating the actions of each sGC subunit in different tumor models. Exploring the roles of sGC subunits in cancer offers a valuable opportunity to enhance our understanding of tumor biology and discover new therapeutic avenues. Full article
(This article belongs to the Special Issue cGMP Signaling: From Bench to Bedside)
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