{"type": "root", "children": [{"type": "p", "children": [{"type": "t", "text": "\nRecent studies have demonstrated that cellular stress responses to viral components can trigger complex inflammatory and metabolic pathways. In particular, research on SARS‑CoV‑2 nucleocapsid protein has revealed its role in activating the SCAP‑SREBP pathway, which in turn promotes lipogenic gene expression and NLRP3 inflammasome assembly in vascular smooth muscle cells. These findings emphasize how viral proteins can potentiate systemic inflammation and metabolic dysregulation, setting the stage for understanding broader cellular stress responses."}, {"type": "fg", "children": [{"type": "fg_f", "ref": "1"}]}, {"type": "t", "text": "\n"}]}, {"type": "t", "text": "\n\n"}, {"type": "p", "children": [{"type": "t", "text": "\nIn a separate context, PIERCE1—originally identified as “p53 induced expression 1” in Rb null cells in mice—has been characterized as a novel p53 target gene involved in the DNA damage response and cell cycle regulation. Notably, in murine models, PIERCE1 expression is robustly upregulated following p53 activation, thereby contributing to cellular defense mechanisms against genomic stress; however, the p53-responsive elements of the PIERCE1 promoter are not conserved in humans, underscoring significant species-specific regulatory differences."}, {"type": "fg", "children": [{"type": "fg_f", "ref": "2"}]}, {"type": "t", "text": "\n"}]}, {"type": "t", "text": "\n\n"}, {"type": "p", "children": [{"type": "t", "text": "\nTogether, these insights illustrate the multifaceted nature of cellular responses under stress conditions. While the SARS‑CoV‑2 study broadens our understanding of how viral components can trigger inflammatory and lipogenic pathways, the functional characterization of PIERCE1 in murine cells illuminates a crucial link between p53‐mediated DNA damage repair and cell cycle control. The apparent divergence in PIERCE1 regulation between species not only highlights the importance of considering evolutionary differences in gene regulation but also may provide a framework for future studies exploring the interplay between inflammation, metabolic changes, and genomic integrity.\n"}]}, {"type": "rg", "children": [{"type": "r", "ref": 1, "children": [{"type": "t", "text": "Mi-Hua Liu, Xiao-Long Lin, Le-Le Xiao "}, {"type": "b", "children": [{"type": "t", "text": "SARS-CoV-2 nucleocapsid protein promotes TMAO-induced NLRP3 inflammasome activation by SCAP-SREBP signaling pathway."}]}, {"type": "t", "text": " "}, {"type": "i", "children": [{"type": "t", "text": "Tissue Cell (2024)"}]}, {"type": "t", "text": " DOI: "}, {"type": "a", "children": [{"type": "t", "text": "10.1016/j.tice.2023.102276"}], "href": "https://doi.org/10.1016/j.tice.2023.102276"}, {"type": "t", "text": " PMID: "}, {"type": "a", "children": [{"type": "t", "text": "37979395"}], "href": "https://pubmed.ncbi.nlm.nih.gov/37979395"}]}, {"type": "r", "ref": 2, "children": [{"type": "t", "text": "Hye Jeong Kim, Seung Eon Lee, Heeju Na, et al. "}, {"type": "b", "children": [{"type": "t", "text": "Divergence of the PIERCE1 expression between mice and humans as a p53 target gene."}]}, {"type": "t", "text": " "}, {"type": "i", "children": [{"type": "t", "text": "PLoS One (2020)"}]}, {"type": "t", "text": " DOI: "}, {"type": "a", "children": [{"type": "t", "text": "10.1371/journal.pone.0236881"}], "href": "https://doi.org/10.1371/journal.pone.0236881"}, {"type": "t", "text": " PMID: "}, {"type": "a", "children": [{"type": "t", "text": "32745107"}], "href": "https://pubmed.ncbi.nlm.nih.gov/32745107"}]}]}]}