Ischemia-Induced Expression Status of Cofilin 1, CRSP2, HSP90, HSP27, and IL-8 in Epicardial Adipose Tissue and Single Cell Transcriptomic Profiling of Stromal Cells.

Epicardial adipose tissue (EAT) is a rich source of EAT-derived stromal cells (EATDS) which possess regenerative potential. CRSP2, HSP27, IL8, HSP90 and Cofilin 1 were detected in the secretome of left ventricular stromal cells under ischemia challenge. However, the association of these genes in the EAT and EATDS remain understudied.

Single cell transcriptomics profiling of the stromal cells in the pathologic association of ribosomal proteins in the ischemic myocardium and epicardial fat.

Sustenance of ischemia in the surviving cardiac tissue following myocardial infarction (MI) elicits a proinflammatory milieu resulting in subsequent pathological episodes. Also, the activation and release of ribosomal proteins under ischemic insults have been unveiled; however, their extra ribosomal functions are unknown. We identified the ribosomal proteins including RPL10A, RPL14, RPL30, RPS18, FAU-40 (RPS30), and RPSA (Laminin Receptor, LR) in the vesicles of ischemia challenged epicardial adipose tissue derived stromal cells (EATDS).

Epicardial Adipocytes in Cardiac Pathology and Healing.

Implications of epicardial adipose tissue (EAT) on the development of coronary artery disease (CAD) have garnered recent attention. Located between the myocardium and visceral pericardium, EAT possesses unique morphological and physiological contiguity to the heart. The transcriptome and secretome of EAT differ from that of other fat stores in the body.

Ischemic cardiac stromal fibroblast-derived protein mediators in the infarcted myocardium and transcriptomic profiling at single cell resolution.

This article focuses on screening the major secreted proteins by the ischemia-challenged cardiac stromal fibroblasts (CF), the assessment of their expression status and functional role in the post-ischemic left ventricle (LV) and in the ischemia-challenged CF culture and to phenotype CF at single cell resolution based on the positivity of the identified mediators. The expression level of CRSP2, HSP27, IL-8, Cofilin-1, and HSP90 in the LV tissues following coronary artery bypass graft (CABG) and myocardial infarction (MI) and CF cells followed the screening profile derived from the MS/MS findings. The histology data unveiled ECM disorganization, inflammation and fibrosis reflecting the ischemic pathology.

Pathological alterations in the expression status of rotator cuff tendon matrix components in hyperlipidemia.

Hyperlipidemia is an important risk factor in the development and progression of tendon pathology, however its role in aggravating rotator cuff tendon injury (RCTI) is largely unknown. We aimed to assess the expression status of key extracellular matrix (ECM) components in the tendon tissues and tenocytes under hyperlipidemia. Shoulder rotator cuff (RC) tendon tissues harvested from the swine model of hyperlipidemia displayed alterations in histomorphometry and the expression status of major ECM component proteins including COL-I, COL-III, COL-IV, COL-V, COL-VI, MMP2, and MMP9.

Single-cell genomics illustrates heterogeneous phenotypes of myocardial fibroblasts under ischemic insults.

Myocardial regenerative strategies are promising where the choice of ideal cell population is crucial for successful translational applications. Herein, we explored the regenerative/repair responses of infarct zone cardiac fibroblast(s) (CF) by unveiling their phenotype heterogeneity at single-cell resolution. CF were isolated from the infarct zone of Yucatan miniswine that suffered myocardial infarction, cultured under simulated ischemic and reperfusion, and grouped into control, ischemia, and ischemia/reperfusion.

Adaptation in Outbred Sexual Yeast is Repeatable, Polygenic and Favors Rare Haplotypes.

We carried out a 200 generation Evolve and Resequence (E&R) experiment initiated from an outbred diploid recombined 18-way synthetic base population. Replicate populations were evolved at large effective population sizes (>105 individuals), exposed to several different chemical challenges over 12 weeks of evolution, and whole-genome resequenced. Weekly forced outcrossing resulted in an average between adjacent-gene per cell division recombination rate of ∼0.