LncRNA CRNDE modulates cardiac progenitor cells' proliferation and migration via the miR-181a/LYRM1 axis in hypoxia

Recent insights into the microRNA and long non-coding RNA-mediated regulation of stem cell populations

Stem cells are undifferentiated cells that have multi-lineage differentiation. The transition from self-renewal to differentiation requires rapid and extensive gene expression alterations. Since different stem cells exhibit diverse non-coding RNAs (ncRNAs) expression profiles, the critical roles of ncRNAs in stem cell reprogramming, pluripotency maintenance, and differentiation have been widely investigated over the past few years. Hence, in this current review, the two main categories of ncRNAs, microRNAs (miRNAs) and long non-coding RNAs (lncRNAs), are discussed. While the primary way by which miRNAs restrict mRNA transcription is through miRNA-mRNA interaction, lncRNAs have a wide range of effects on mRNA functioning, including interactions with miRNAs. Both of these ncRNAs participate in the post-transcriptional regulation of crucial biological mechanisms, such as cell cycle regulation, apoptosis, aging, and cell fate decisions. These findings shed light on a previously unknown aspect of gene regulation in stem cell fate determination and behavior. Overall, we summarized the key roles of miRNAs (including exosomal miRNAs) and lncRNAs in the regulation of stem cell populations, such as cardiac, hematopoietic, mesenchymal, neural, and spermatogonial, as well ncRNAs' influence on malignancy through modulating cancer stem cells, which might significantly contribute to clinical stem cell therapy and in regenerative medicine.

Long Non-coding RNAs: Potential Players in Cardiotoxicity Induced by Chemotherapy Drugs

One of the most important side effects of chemotherapy is cardiovascular complications, such as cardiotoxicity. Many factors are involved in the pathogenesis of cardiotoxicity; one of the most important of which is long non-coding RNAs (lncRNAs). lncRNA has 200-1000 nucleotides. It is involved in important processes such as cell proliferation, regeneration and apoptosis; today it is used as a prognostic and diagnostic factor. A, various drugs by acting on lncRNAs can affect cells. Therefore, by accurately identifying IncRNAs function, we can play an effective role in preventing the development of cardiotoxicity-induced chemotherapy drugs, and use them as a therapeutic strategy to improve clinical symptoms and increase patient survival.

Protective effect of lncRNA CRNDE on myocardial cell apoptosis in heart failure by regulating HMGB1 cytoplasm translocation through PARP-1

Long non-coding RNAs (lncRNAs) are bound up with the regulation of various diseases. Here, we probed into the effect of lncRNA colorectal neoplasia differentially expressed (CRNDE) on heart failure (HF). The pathological alterations and cell apoptosis of heart tissues were observed by hematoxylin-eosin and TUNEL staining. The viability or apoptosis of mouse myocardial cells HL-1 was tested by XTT or flow cytometry. The interaction between lncRNA CRNDE and poly-ADP-ribose polymerase 1 (PARP-1) was verified by RNA immunoprecipitation and RNA pull-down. The stability of the PARP-1 protein and the acetylation level of high mobility group box-1 (HMGB1) were determined by cycloheximide-chase and immunoprecipitation, respectively. LncRNA CRNDE expression was decreased in HF mice tissues and doxorubicin (Dox)-treated HL-1 cells, whereas PARP-1 and HMGB1 were increased. The overexpression of lncRNA CRNDE restrained HL-1 cell apoptosis induced by Dox. Moreover, the interaction between CRNDE and PARP-1 was corroborated, CRNDE negatively regulated PARP-1 expression, and the overexpression of CRNDE reduced PARP-1 protein stability. In HL-1 cells, PARP-1 positively regulated the acetylation level and cytoplasm translocation of HMGB1. CRNDE restrained Dox-induced apoptosis in mouse myocardial cells via the PARP-1/HMGB1 pathway.