| Title: |
Stress signaler p38 mitogen-activated kinase activation: a cause for concern? |
| Authors: |
Radnaa, Enkhtuya, Richardson, Lauren, Goldman, Brett, Burks, Jared K., Baljinnyam, Tuvshintugs, Vora, Natasha, Hui-juan Zhang, Bonney, Elizabeth A., Han, Arum, Menon, Ramkumar |
| Source: |
Clinical Science; Nov2022, Vol. 136 Issue 22, p1591-1614, 24p |
| Subject Terms: |
FETAL membranes, CELL migration, AMNION, EPITHELIAL-mesenchymal transition, EXTRACELLULAR matrix, MITOGEN-activated protein kinases |
| Abstract: |
Oxidative stress (OS) induced activation of p38 mitogen-activated kinase (MAPK) and cell fate from p38 signaling was tested using the human fetal membrane’s amnion epithelial cells (AEC). We created p38 KO AEC using the CRISPR/Cas9 approach and tested cell fate in response to OS on an AEC-free fetal membrane extracellular matrix (ECM). Screening using image CyTOF indicated OS causing epithelial–mesenchymal transition (EMT). Further testing revealed p38 deficiency prevented AEC senescence, EMT, cell migration, and inflammation. To functionally validate in vitro findings, fetal membrane-specific conditional KO (cKO) mice were developed by injecting Cre-recombinase encoded exosomes intra-amniotically into p38αloxP/loxP mice. Amnion membranes from p38 cKO mice had reduced senescence, EMT, and increased anti-inflammatory IL-10 compared with WT animals. Our study sug)gested that overwhelming activation of p38 in response to OS inducing risk exposures can have an adverse impact on cells, cause cell invasion, inflammation, and ECM degradation detrimental to tissue homeostasis [ABSTRACT FROM AUTHOR] |
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| Database: |
Complementary Index |
