scholarly journals Bicuspid aortic valve formation: Nos3 mutation leads to abnormal lineage patterning of neural crest cells and the second heart field

2018 ◽  
Vol 11 (10) ◽  
pp. dmm034637 ◽  
Author(s):  
Joshua C. Peterson ◽  
Mary Chughtai ◽  
Lambertus J. Wisse ◽  
Adriana C. Gittenberger-de Groot ◽  
Qingping Feng ◽  
...  
2020 ◽  
Vol 7 (4) ◽  
pp. 38
Author(s):  
Deborah J. Henderson ◽  
Lorraine Eley ◽  
Bill Chaudhry

Although in many ways the arterial and atrioventricular valves are similar, both being derived for the most part from endocardial cushions, we now know that the arterial valves and their surrounding structures are uniquely dependent on progenitors from both the second heart field (SHF) and neural crest cells (NCC). Here, we will review aspects of arterial valve development, highlighting how our appreciation of NCC and the discovery of the SHF have altered our developmental models. We will highlight areas of research that have been particularly instructive for understanding how the leaflets form and remodel, as well as those with limited or conflicting results. With this background, we will explore how this developmental knowledge can help us to understand human valve malformations, particularly those of the bicuspid aortic valve (BAV). Controversies and the current state of valve genomics will be indicated.


Development ◽  
2017 ◽  
Vol 145 (1) ◽  
pp. dev151944 ◽  
Author(s):  
Gaëlle Odelin ◽  
Emilie Faure ◽  
Fanny Coulpier ◽  
Maria Di Bonito ◽  
Fanny Bajolle ◽  
...  

2020 ◽  
Author(s):  
Adriana C. Gittenberger-de Groot ◽  
Joshua C. Peterson ◽  
Lambertus J. Wisse ◽  
Arno A.W. Roest ◽  
Robert E. Poelmann ◽  
...  

AbstractObjectivesIn congenital heart malformations with pulmonary stenosis to atresia an abnormal lateral ductus arteriosus to left pulmonary artery connection can lead to a localised narrowing (pulmonary ductal coarctation) or even interruption We investigated embryonic remodelling and pathogenesis of this area.Material and methods. Normal development was studied in WntCre reporter mice (E10.0-12.5) for neural crest cells and Nkx2.5 immunostaining for second heart field cells. Data were compared to stage matched human embryos and a VEGF120/120 mutant mouse strain developing pulmonary atresia.ResultsNormal mouse and human embryos showed that the mid-pharyngeal endothelial plexus, connected side-ways to the 6th pharyngeal arch artery. The ventral segment formed the proximal pulmonary artery. The dorsal segment (future DA) was solely surrounded by neural crest cells. The ventral segment had a dual outer lining with neural crest and second heart field cells, while the distal pulmonary artery was covered by none of these cells. The asymmetric contribution of second heart field to the future pulmonary trunk on the left side of the aortic sac (so-called pulmonary push) was evident. The ventral segment became incorporated into the pulmonary trunk leading to a separate connection of the left and right pulmonary arteries. The VEGF120/120 embryos showed a stunted pulmonary push and a variety of vascular anomalies.SummarySide-way connection of the DA to the left pulmonary artery is a congenital anomaly. The primary problem is a stunted development of the pulmonary push leading to pulmonary stenosis/atresia and a subsequent lack of proper incorporation of the ventral segment into the aortic sac. Clinically, the aberrant smooth muscle tissue of the ductus arteriosus should be addressed to prohibit development of severe pulmonary ductal coarctation or even interruption of the left pulmonary artery.


PLoS ONE ◽  
2017 ◽  
Vol 12 (9) ◽  
pp. e0183556 ◽  
Author(s):  
Jessica Martínez-Vargas ◽  
Jacint Ventura ◽  
Ángela Machuca ◽  
Francesc Muñoz-Muñoz ◽  
María Carmen Fernández ◽  
...  

2006 ◽  
Vol 298 (1) ◽  
pp. 12-21 ◽  
Author(s):  
Mariko Sato ◽  
Huai-Jen Tsai ◽  
H. Joseph Yost

2012 ◽  
Vol 110 (7) ◽  
pp. 922-926 ◽  
Author(s):  
Kurt A. Engleka ◽  
Lauren J. Manderfield ◽  
Rachael D. Brust ◽  
Li Li ◽  
Ashley Cohen ◽  
...  

eLife ◽  
2018 ◽  
Vol 7 ◽  
Author(s):  
Lorriane Eley ◽  
Ahlam MS Alqahtani ◽  
Donal MacGrogan ◽  
Rachel V Richardson ◽  
Lindsay Murphy ◽  
...  

Abnormalities of the arterial valve leaflets, predominantly bicuspid aortic valve, are the commonest congenital malformations. Although many studies have investigated the development of the arterial valves, it has been assumed that, as with the atrioventricular valves, endocardial to mesenchymal transition (EndMT) is the predominant mechanism. We show that arterial is distinctly different from atrioventricular valve formation. Whilst the four septal valve leaflets are dominated by NCC and EndMT-derived cells, the intercalated leaflets differentiate directly from Tnnt2-Cre+/Isl1+ progenitors in the outflow wall, via a Notch-Jag dependent mechanism. Further, when this novel group of progenitors are disrupted, development of the intercalated leaflets is disrupted, resulting in leaflet dysplasia and bicuspid valves without raphe, most commonly affecting the aortic valve. This study thus overturns the dogma that heart valves are formed principally by EndMT, identifies a new source of valve interstitial cells, and provides a novel mechanism for causation of bicuspid aortic valves without raphe.


2017 ◽  
Vol 7 (1) ◽  
Author(s):  
Kazuki Kodo ◽  
Shinsuke Shibata ◽  
Sachiko Miyagawa-Tomita ◽  
Sang-Ging Ong ◽  
Hiroshi Takahashi ◽  
...  

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