Publications by authors named "P L Soong"

Corneal endothelium cells (CECs) regulate corneal hydration between the leaky barrier of the corneal endothelium and the ionic pumps on the surface of CECs. As CECs do not regenerate, loss of CECs leads to poor vision and corneal blindness. Corneal transplant is the only treatment option; however, there is a severe shortage of donor corneas globally.

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Rationale: Cardiac-expressed long noncoding RNAs (lncRNAs) are important for cardiomyocyte (CM) differentiation and function. Several lncRNAs have been identified and characterized for early CM lineage commitment, however those in later CM lineage specification and maturation remain less well studied. Moreover, unique atrial / ventricular lncRNA expression has never been studied in detail.

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Through extensive multisystem phenotyping, the central aim of Project PICMAN is to correlate metabolic flexibility to measures of cardiometabolic health, including myocardial diastolic dysfunction, coronary and cerebral atherosclerosis, body fat distribution and severity of non-alcoholic fatty liver disease. This cohort will form the basis of larger interventional trials targeting metabolic inflexibility in the prevention of cardiovascular disease. Participants aged 21-72 years with no prior manifest atherosclerotic cardiovascular disease (ASCVD) are being recruited from a preventive cardiology clinic and an existing cohort of non-alcoholic fatty liver disease (NAFLD) in an academic medical centre.

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Ischemic heart disease, which is often associated with irreversibly damaged heart muscle, is a major global health burden. Here, we report the potential of stem cell-derived committed cardiac progenitors (CCPs) have in regenerative cardiology. Human pluripotent embryonic stem cells were differentiated to CCPs on a laminin 521 + 221 matrix, characterized with bulk and single-cell RNA sequencing, and transplanted into infarcted pig hearts.

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Article Synopsis
  • Mitochondrial dysfunction from acute cardiac ischemia-reperfusion may heighten the risk of arrhythmias by affecting energy production, oxidative stress, and calcium balance.
  • A study compared cardiomyocyte action potential duration (APD) and conduction velocity (CV) between Mitofusins-1/2 double-knockout (Mfn-DKO) and wild-type (WT) mice, revealing that Mfn-DKO mice had longer APD and lower baseline CV.
  • Mfn-DKO hearts showed abnormal connexin-43 (Cx43) lateralization, indicating that mitofusins may play a role in the development of cardiac arrhythmias after myocardial injury.
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