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Real-time quantitative PCR analysis of mouse natural killer cells isolated from the bone marrow

ABSTRACT: A large gap in our understanding of infant immunity is why natural killer (NK) cell responses are deficient, which makes infants more prone to viral infection. Here we demonstrate that transforming growth factor-beta (TGF-beta) was responsible for NK cell immaturity during infancy. We found more fully mature NK cells in CD11cdnR mice, whose NK cells lack TGF-beta receptor (TGF-beta R) signaling. Ontogenic maturation of NK cells progressed faster in the absence of TGF-beta signaling, which results in the formation of a mature NK cell pool early in life. As a consequence, infant CD11cdnR mice efficiently controlled viral infections. These data thus demonstrate an unprecedented role for TGF-beta in ontogeny that can explain why NK cell responses are deficient early in life.

ORGANISM(S): Mus musculus

PROVIDER: GSE39511 | GEO | 2012/07/25

SECONDARY ACCESSION(S): PRJNA171245

REPOSITORIES: GEO

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Real-time quantitative PCR analysis of mouse natural killer cells isolated from the bone marrow

Project description:A large gap in our understanding of infant immunity is why natural killer (NK) cell responses are deficient, which makes infants more prone to viral infection. Here we demonstrate that transforming growth factor-beta (TGF-beta) was responsible for NK cell immaturity during infancy. We found more fully mature NK cells in CD11cdnR mice, whose NK cells lack TGF-beta receptor (TGF-beta R) signaling. Ontogenic maturation of NK cells progressed faster in the absence of TGF-beta signaling, which results in the formation of a mature NK cell pool early in life. As a consequence, infant CD11cdnR mice efficiently controlled viral infections. These data thus demonstrate an unprecedented role for TGF-beta in ontogeny that can explain why NK cell responses are deficient early in life. Bone marrow cells were isolated from CD11cdnR (TG) and wild-type (WT) mice, and NK cells were sorted at different stages of development (stages D, E, and F) using BD Biosciences FACSAria. mNK cells from stages D, E, and F were obtained from three cell sorting analyses with samples pooled from n = 12 CD11cdnR and 25 WT mice. Equal amounts of total RNA from each stage was pooled prior to gene expression analysis. RNA was prepared using the RNeasy Micro kit (Qiagen), and cDNA was obtained using the standard protocol of reverse transcription. A customized StellARay cell cycle qPCR array (Lonza) was used. Quantitative gene expression analysis (quantitative PCR) was conducted on an ABI Prism 7900 instrument (Applied Biosystems).

2012-07-25 | E-GEOD-39511 | biostudies-arrayexpress

Autocrine TGF-β1 drives tissue-specific differentiation and function of resident NK cells

Project description:Group 1 innate lymphoid cells (ILCs) encompass NK cells and ILC1s which have non-redundant roles in host protection against pathogens and cancer. Despite their circulating nature, NK cells can establish residency in selected tissues during ontogeny, forming a distinct functional subset. The mechanisms that initiate, maintain, and regulate the conversion of NK cells into tissue-resident NK (trNK) cells are currently not well understood. Here, we identify autocrine transforming growth factor-b (TGF-b) as a cell-autonomous driver for NK cell tissue-residency across multiple glandular tissues during development. Cell-intrinsic production of TGF-β was continuously required for the maintenance of trNK cells and synergized with Hobit to enhance cytotoxic function. Whereas autocrine TGF-β was redundant in tumors, our study revealed that NK cell-derived TGF-β allowed expansion of cytotoxic trNK cells during local infection with murine cytomegalovirus (MCMV) and contributed to viral control in the salivary gland. Collectively, our findings reveal tissue-specific regulation of trNK cell differentiation and function by autocrine TGF-β1, which is relevant for anti-viral immunity.

2024-11-21 | GSE282148 | GEO

Disruption of TGF-β signaling pathway is required to mediate effective killing of hepatocellular carcinoma by human iPSC-derived NK cells

Project description:Hepatocellular carcinoma (HCC) is the most common type of primary liver cancer. Transforming growth factor beta (TGF-β) is highly expressed in the liver tumor microenvironment and is known to inhibit immune cell activity. Here, we used human iPSCs to produce natural killer (NK) cells engineered to mediate improved anti-HCC activity. Specifically, we produced iPSC-NK cells with either knock out TGF-β receptor 2 (TGFBR2-KO) or expression of a dominant negative (DN) form of the TGF-β receptor 2 (TGFBR2-DN) combined with CARs that target either GPC3 or AFP. The TGFBR2-KO and TGFBR2-DN iPSC-NK cells are resistant to TGF-β inhibition and improved anti-HCC activity. However, expression of anti-HCC CARs on iPSC-NK cells did not lead to effective anti-HCC activity unless there was also inhibition of TGF-b activity. Our findings demonstrate that TGF-β signaling blockade is required for effective NK cell function against HCC and potentially other malignancies which express high levels of TGF-β.

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Small RNA profiling of wildtype and Eri1-deficient mouse T cells

Project description:Natural killer (NK) cells play a critical role in early host defense to infected and transformed cells. Here we show that mice deficient in Eri1, a conserved 3M-bM-^@M-^Y-to-5M-bM-^@M-^Y exoribonuclease that represses RNA interference, have a cell-intrinsic defect in NK cell development and maturation. Eri1M-bM-^@M-^S/M-bM-^@M-^S NK cells displayed delayed acquisition of Ly49 receptors in the bone marrow and a selective reduction in Ly49D and Ly49H activating receptors in the periphery. Eri1 was required for immune-mediated control of mouse cytomegalovirus (MCMV) infection. Ly49H+ NK cells deficient in Eri1 failed to expand efficiently during MCMV infection, and virus-specific responses were also diminished among Eri1M-bM-^@M-^S/M-bM-^@M-^S T cells. We identified miRNAs as the major endogenous small RNA target of Eri1 in mouse lymphocytes. Both NK and T cells deficient in Eri1 displayed a global, sequence-independent increase in miRNA abundance. Ectopic Eri1 expression rescued defective miRNA expression in mature Eri1M-bM-^@M-^S/M-bM-^@M-^S T cells. Thus, mouse Eri1 regulates miRNA homeostasis in lymphocytes and is required for normal NK cell development and anti-viral immunity. Small RNA profiling from wildtype and Eri1-deficient mouse CD4+ T cells

2012-07-11 | E-GEOD-31920 | biostudies-arrayexpress

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CD137 costimulation counteracts TGFβ inhibition of NK cell anti-tumor function and promotes the acquisition of tissue-resident Th9-like properties [2 treatments]

Project description:Enhancing NK cell-based cancer immunotherapy by overcoming immunosuppression is an unmet goal. Here, we demonstrate the ability of the anti-CD137 agonist urelumab for overcoming TGF-β-mediated inhibition of human NK-cell proliferation and sustained anti-tumor function. Transcriptomic, immunophenotypic and functional analyses evidenced that CD137 costimulation modified the transcriptional program induced by TGF-β on activated NK cells by limiting SMAD4-dependent inhibition of pro-proliferative (CD25, cMyc), activating (NKG2D, CD16) and effector (Granzyme B, IFNγ) molecules while maintaining SMAD4-independent acquisition of tumor-retention features (CXCR3, CD103). Activated NK cells cultured in the presence of TGF-β1 and CD137 agonist showed preserved antibody-dependent cytotoxicity against cancer cells, recovered CCL5 and IFNγ secretion and gained the capacity for producing IL-9 upon restimulation. Treatment of breast tumor-derived multicellular cultures with trastuzumab and urelumab recapitulated CD137 induction and fostered tumor-infiltrating CD16+ NK cell persistence. Our data reveals CD137 as a targetable checkpoint for overturning TGF-β constrains on NK cell anti-tumor responses

2021-09-10 | GSE156199 | GEO

CD137 costimulation counteracts TGFβ inhibition of NK cell anti-tumor function and promotes the acquisition of tissue-resident Th9-like properties [4 treatments]

2021-09-10 | GSE143375 | GEO

Expression data of Rag2-deficient Ets1++ and Rag2-deficient Ets1-- mature NK cells and WT bone marrow progenitors

Project description:Expression profiling of Rag2-deficient Ets1++ and Rag2-deficient Ets1-- mature NK cells and WT bone marrow progenitors, WT T cells, and WT Pro B cells WT Hematopoietic progenitors, CD4 T cells, Pro B cells, and WT and Ets1-deficient NK cells were FACs sorted. RNA was subsequently extracted, labelled, and hybridized to Affymetrix microarrays. The goal if this experiment was to identify Ets1 dependent genes in NK cells

2012-08-09 | E-GEOD-37301 | biostudies-arrayexpress

Cellular Mechanisms of Fatal Early-Onset Autoimmunity in Mice with the T Cell-Specific Targeting of TGFβ Receptor

Project description:Transforming growth factor-β (TGF-β) has been implicated in the control of differentiation and proliferation of multiple cell types. However, a role for TGF-β in the control of immune homeostasis is not fully understood because of its pleiotropic action. Here we report that complete ablation of the TGF-β signaling in T cells engendered aggressive early-onset, multiorgan, autoimmune-associated lesions with 100% mortality. Peripheral CD4+ and CD8+ T cells with TGF-β-receptor II (TGF-βRII) deficiency activated cytolytic and T helper 1 (Th1) differentiation program in a cell-intrinsic T cell receptor (TCR)-specific fashion. Furthermore, TGF-βRII deficiency blocked the development of canonical CD1d-restricted NKT cells. Instead, it facilitated generation of a highly pathogenic T cell subset exhibiting multiple hallmarks of NK cells and sharply elevated amounts of FasL, perforin, granzymes, and interferon-γ. Thus, TGF-β signaling in peripheral T cells is crucial in restraining TCR activation-dependent Th1, cytotoxic, and NK cell-like differentiation program which, when left unchecked, leads to rapidly progressing fatal autoimmunity. Keywords: Cell type comparison

2006-10-17 | GSE4178 | GEO

Runx3 function in splenic NK cells activated in vivo by IL-15.

Project description:NK cells are innate immune cells that recognize and kill foreign, virally-infected and tumor cells without the need for prior immunization. NK expansion following viral infection is IL-2 or IL-15-dependent. To identify Runx3 regulated genes, NK cells were isolated from spleen of IL15/Ra injected WT and Runx3-/- mice and sorted to obtain 3 subpopulations of immature (CD27) and mature (DP and CD11c) NK cells.

2014-01-22 | E-GEOD-50120 | biostudies-arrayexpress

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