Targeting Regnase-1 unleashes CAR T cell antitumor activity for osteosarcoma and creates a proinflammatory tumor microenvironment [scRNAseq2]
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ABSTRACT:
ORGANISM(S): Mus musculus
PROVIDER: GSE295138 | GEO | 2026/07/14
REPOSITORIES: GEO
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Project description:We took advantage of CAR T cells targeting B7-H3 in immune competent osteosarcoma models and evaluated the intrinsic and extrinsic effects of the known negative regulator Regnase-1 (Reg-1).
2026-07-14 | GSE295137 | GEO
Project description:Having identified the crucial role of IFN-γ in anti-tumor immunity of Reg-1ΔNK, we attempted to elucidate the mechanism underlying the regulation of Ifng in the context of Regnase-1 deletion. Despite the notable increase in Ifng mRNA expression in Reg-1ΔNK-NK cells, Ifng was not a direct substrate of Regnase-1. However, the production of the IFN-γ was further enhanced upon stimulation with IL-12/18. We proposed that modifications may have occurred in the transcriptional regulation of Ifng in Reg-1ΔNK-NK cells.
2024-05-30 | GSE237641 | GEO
Project description:Having identified the crucial role of IFN-γ in anti-tumor immunity of Reg-1ΔNK, we attempted to elucidate the mechanism underlying the regulation of Ifng in the context of Regnase-1 deletion. Despite the notable increase in Ifng mRNA expression in Reg-1ΔNK-NK cells, Ifng was not a direct substrate of Regnase-1. However, the production of the IFN-γ was further enhanced upon stimulation with IL-12/18. We proposed that modifications may have occurred in the transcriptional regulation of Ifng in Reg-1ΔNK-NK cells.
2024-05-30 | GSE237637 | GEO
Project description:Regnase-2, an enzyme responsible for suppressing inflammation and producing toxins, including indole. This study used genetically engineered mice to explore the role of Regnase-2 (Reg-2) in kidneys. Using conditional knockout (Conditional KO) mouse models, renal proximal tubule–specific Inmt function was assessed. Gene expression changes, apoptotic cell percentages, and mitochondrial DNA copy numbers were examined by RNA sequencing, histopathology, and various molecular assays. Those analyses were further complemented by immunofluorescence and electron microscopy to investigate cellular and structural alterations.Results: Inmt downregulation induced AKI associated with increased production of reactive oxygen species, and increased tubular apoptosis.
2026-03-28 | GSE316214 | GEO
Project description:Regulation of lineage biases in hematopoietic stem and progenitor cells (HSPCs) is pivotal for balanced hematopoietic output. However, little is known about the mechanism behind lineage choice in HSPCs. Here, we show that mRNA decay factors Regnase-1 (Zc3h12a) and Regnase-3 (Zc3h12c) are critical for induction of myeloid lineage priming, restricting lymphoid differentiation in HSPCs. Regnase-1- and Regnase-3-mediated control of mRNA encoding Nfkbiz, a transcriptional and epigenetic regulator, was essential for balancing lymphoid/myeloid lineage output in HSPCs in vivo. Furthermore, single cell-assay for transposase-accessible chromatin sequencing (scATAC-seq) analysis revealed that Regnase-1 and Regnase-3 control the epigenetic landscape on myeloid-related gene loci in hematopoietic stem cells (HSCs) via Nfkbiz. Consistently, an antisense oligonucleotide designed to inhibit Regnase-1- and Regnase-3-mediated Nfkbiz mRNA degradation primed HSCs toward myeloid lineages by enhancing Nfkbiz expression. Collectively, the collaboration between post-transcriptional control and chromatin remodeling by the Regnase-1/Regnase-3-Nfkbiz axis governs lineage priming, instructing HSC lineage specification.
2024-02-09 | GSE228923 | GEO
Project description:The RNase Regnase-1 is a master RNA regulator in macrophages and T cells that degrades cellular and viral RNA upon NF-kB signaling. The roles of the other Regnase family-members remain largely unknown. Here, we analyze Regnase-3 deficient mice, which develop hypertrophic lymph nodes. We used various mice with immune cell specific deletions of Regnase-3 to demonstrate that Regnase-3 acts specifically within myeloid cells. Regnase-3 deficiency systemically increased interferon signaling, which increased the proportion of immature B and innate immune cells and suppressed follicles and germinal center formation. Expression analysis revealed that Regnase-3 and Regnase-1 share protein degradation pathways. Nevertheless, Regnase-3 expression is specifically high in macrophages and transcriptionally controlled by interferon signaling. Although direct targets in macrophages remain unknown, Regnase-3 can bind, degrade and regulate mRNAs, such Zc3h12a encoding Regnase-1, in vitro. These data indicate that Regnase-3, like Regnase-1, is an RNase and essential for immune homeostasis, but has diverged as a key regulator for the interferon pathway in macrophages.
2019-04-05 | GSE129325 | GEO
Project description:Post-transcriptional regulation of immune-related transcripts by RNA-binding proteins (RBPs) impacts immune cell responses, including mast cell functionality. Despite their importance in immune regulation, the functional role of most RBPs remains to be understood. By manipulating the expression of specific RBPs in murine mast cells, coupled with mass spectrometry and transcriptomic analyses, we found that the Regnase family of proteins acts as a potent regulator of mast cell physiology. Specifically, Regnase-1 is required to maintain basic cell proliferation and survival, while both Regnase-1 and -3 cooperatively regulate the expression of inflammatory transcripts upon activation, with Tnf being a primary target in both human and mouse cells. Further, Regnase-3 directly interacts with Regnase-1 in mast cells and is necessary to restrain Regnase-1 expression through the destabilization of its transcript. Overall, our study identifies protein interactors of endogenously expressed Regnase factors, characterizes the regulatory interplay between Regnase family members in mast cells, and establishes their role in the control of mast cell homeostasis and inflammatory responses.
2024-05-31 | PXD051849 | Pride
Project description:Gene expression profiling of primary mouse articular chondrocyte infected with recombinant adenovirus expression mouse Regnase-1 or recombinant adenovirus expressing mouse small hairpin RNA of Regnase-1. In this study, we have attempted to explore the effects of Regnase-1 overexpression or knockdown on mouse transcriptome and have identified numerous genes which are involved in osteoarthritis pathogenesis.
2021-01-01 | GSE153179 | GEO
Project description:Dysregulation of mast cell activation can lead to allergic and anaphylactic reactions. Post-transcriptional regulation of immune-related transcripts by RNA-binding proteins (RBPs) is critical in controlling immune cell responses, including mast cell functionality. The Regnase family of RBPs plays a central role in regulating gene expression and controlling immune responses in both lymphoid and myeloid cells. However, what is the functional role of Regnase proteins in mast cells remains to be understood. Using different approaches of Regnase proteins depletion and deletion as well as overexpression by mRNA delivery, we found that Regnase-1 is a powerful negative regulator of mast cell proliferation, survival and ability to produce inflammatory cytokines. On the other hand, Regnase-3 was essential to modulate Regnase-1 expression in mast cells by direct targeting of the 3’-untranslated region of Regnase-1, leading to the destabilization of the Zc3h12a mRNA. Regnase-1 deletion had widespread effect on mast proliferation and survival even in the absence of stimulation and was at least in part linked to specific nuclear functions of Regnase-1 in modulating the ability of mast cells to withstand DNA damage. Overall, we describe the importance of Regnase proteins in modulating mast cell homeostatic and inflammatory responses and we describe the impact of Regnase-1 in the maintenance of genome stability.
2024-05-31 | GSE240035 | GEO
Project description:Dysregulation of mast cell activation can lead to allergic and anaphylactic reactions. Post-transcriptional regulation of immune-related transcripts by RNA-binding proteins (RBPs) is critical in controlling immune cell responses, including mast cell functionality. The Regnase family of RBPs plays a central role in regulating gene expression and controlling immune responses in both lymphoid and myeloid cells. However, what is the functional role of Regnase proteins in mast cells remains to be understood. Using different approaches of Regnase proteins depletion and deletion as well as overexpression by mRNA delivery, we found that Regnase-1 is a powerful negative regulator of mast cell proliferation, survival and ability to produce inflammatory cytokines. On the other hand, Regnase-3 was essential to modulate Regnase-1 expression in mast cells by direct targeting of the 3’-untranslated region of Regnase-1, leading to the destabilization of the Zc3h12a mRNA. Regnase-1 deletion had widespread effect on mast proliferation and survival even in the absence of stimulation and was at least in part linked to specific nuclear functions of Regnase-1 in modulating the ability of mast cells to withstand DNA damage. Overall, we describe the importance of Regnase proteins in modulating mast cell homeostatic and inflammatory responses and we describe the impact of Regnase-1 in the maintenance of genome stability.
2024-05-31 | GSE240095 | GEO