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Effect of CD137 (4-1BB) triggering on human monocytes

ABSTRACT: The cell surface glycoprotein CD137, which is also known as 4-1BB, belongs to the group of co-stimulatory immune receptors and is a member of the TNF receptor superfamily (TNFRSF). It is preferentially found on activated T-cells and regulatory T-cells. In T-cells, CD137-crosslinking delivers a potent co-stimulatory signal as it promotes T-cell proliferation, formation of memory cells and enhances survival. Despite numerous studies investigating the effects of co-stimulatory CD137 in T-cells, little is known regarding the role of CD137 in human monocytes/macrophages. To investigate the effect of CD137 triggering on human monocytes, monocytes were isolated and treated with an agonistic CD137 mAb and subsequently analyzed by RNA-seq.

ORGANISM(S): Homo sapiens

PROVIDER: GSE171108 | GEO | 2021/06/17

REPOSITORIES: GEO

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Differential gene expression in CD137HI vs CD137LO human healthy donor monocytes

Project description:The cell surface glycoprotein CD137, which is also known as 4-1BB, belongs to the group of co-stimulatory immune receptors and is a member of the TNF receptor superfamily (TNFRSF). It is preferentially found on activated T-cells and regulatory T-cells but also innate immune cells such as natural killer cells, neutrophils, and monocytes can express CD137. In order to delineate properties of monocytes expressing CD137, RNAseq of CD137HI vs CD137LO expression monocytes was performed.

2021-06-17 | GSE171109 | GEO

Effect of CD137 (4-1BB) triggering on human monocytes

Project description:Effect of CD137 (4-1BB) triggering on human monocytes

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Project description:CD137 (4-1BB) is a member of the TNFR family that mediates potent T-cell costimulatory signals upon ligation by CD137L or agonist monoclonal antibodies. CD137 agonists attain immunotherapeutic antitumor effects in cancer mouse models and multiple agents of this kind are undergoing clinical trials. We show that cIAP1 and cIAP2 are physically associated with the CD137-signaling complex. Moreover, cIAPs are required for CD137 signaling towards the NF-κB and MAPK pathways and for costimulation of human and mouse T lymphocytes. Functional evidence was substantiated with SMAC-mimetics that trigger cIAPs degradation and by transfecting cIAP dominant-negative variants. Antitumor effects of agonist anti-CD137 mAbs are critically dependent on the integrity of cIAPs in cancer mouse models and cIAPs are also required for signaling from CARs encompassing CD137’s cytoplasmic tail.

2024-05-24 | PXD042585 | Pride

CD137 (4-1BB) ligand mediates CD4 T-cell immuno-surveillance of pre- lymphoma B cells in a lymphoma-prone mouse model

Project description:Aberrant expression of the proto-oncogene BCL6 is a driver of tumorigenesis in diffuse large B cell lymphoma (DLBCL). Mice overexpressing BCL6 from the B cell-specific immunoglobulin heavy chain μ intron promoter (Iμ-Bcl6 Tg/+ ) develop B cell lymphomas with features typical of human DLBCL. B cell lymphoma development in these mice is tightly controlled by T cells; however, the mechanisms of this immune surveillance are poorly understood. Here we show that CD4 T cells contribute to the control of lymphoproliferative disease in lymphoma-prone Iμ-Bcl6 Tg/+ mice. Furthermore, we reveal that this CD4 T-cell immuno-surveillance requires signaling by the co-stimulatory molecule, CD137 ligand (CD137L; also known as 4-1BBL), which promotes the transition of pre malignant B cells with an activated phenotype into the germinal center stage, preventing their hazardous accumulation. Thus, CD137L-mediated CD4 T cell immuno-surveillance adds another layer of protection against B-cell malignancy to that provided by CD8 T-cell cytotoxicity.

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CD137 promotes bone metastasis of breast cancer by enhancing the migration and osteoclast differentiation of monocytes/macrophages

Project description:Rationale: Bone is the most common metastatic site of breast cancer. CD137(4-1BB), a member of the tumor necrosis factor (TNF) receptor superfamily, is mainly expressed in activated leukocytes. Previous study demonstrates the effect of CD137-CD137L bidirectional signaling pathway on RANKL-mediated osteoclastogenesis. However, the role of CD137 in bone metastasis of breast cancer needs further study. Methods: Stable monocyte/macrophage cell lines with Cd137 overexpression and silencing were established. Western blot, real-time PCR, transwell and tartrate-resistant acid phosphatase staining were used to detect the regulatory effect of CD137 on migration and osteoclastogenesis of monocytes/macrophages in vitro. Spontaneous bone metastasis mouse model was established, bioluminescent images, immunohistochemistry and histology assay were performed to detect the function of CD137 in bone metastasis in vivo. Results: We found that CD137 promotes the migration of monocytes/macrophages to tumor microenvironment by upregulating the expression of Fra1. It also promoted the differentiation of monocytes/macrophages into osteoclasts at the same time, thus providing a favorable microenvironment for the colonization and growth of breast cancer cells in bone. Based on these findings, a novel F4/80-targeted liposomal nanoparticle encapsulating the anti-CD137 Ab blocking antibody (NP-aCD137 Ab-F4/80) was synthesized. This nanoparticle could inhibit both bone and lung metastases of 4T1 breast cancer cells with high efficacy in vivo. In addition, it increased the therapeutic efficacy of Fra1 inhibitor on tumor metastasis. Conclusions: Taken together, these findings reveal the promotion effect of macrophage/monocyte CD137 on bone metastases and provide a promising therapeutic strategy for metastasis of breast cancer.

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Epithelial Ovarian Cancer is infiltrated by activated effector T cells co-expressing CD39, PD-1, TIM-3, CD137 and interacting with cancer cells and myeloid cells

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2023-10-02 | GSE243751 | GEO

CD137-CIS IO

Project description:CD137 cis-costimulation is superior to trans-costimulation at inducing transcriptomic differences in T-cell proliferation and DNA repair programs We used microarrays to detail differentially expressed genes of cis- and trans CD137-costimulated CD8 T cells with respect to CD3-TCR stimulation

2021-09-28 | GSE158041 | GEO

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2016-06-30 | E-GEOD-60199 | biostudies-arrayexpress

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