Transcriptomic profiling of FDH cells expressing wild-type or Site 4 mutant IL-3 receptor
Ontology highlight
ABSTRACT:
PROVIDER: PRJNA592897 | ENA |
REPOSITORIES: ENA
Dataset's files
| Action | DRS | |||
|---|---|---|---|---|
| SRR10573355.fastq.gz | Fastqsanger.gz | |||
| SRR10573356.fastq.gz | Fastqsanger.gz | |||
| SRR10573357.fastq.gz | Fastqsanger.gz | |||
| SRR10573358.fastq.gz | Fastqsanger.gz | |||
| SRR10573359.fastq.gz | Fastqsanger.gz |
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Project description:RNA was extracted after treatment of FDH cells expressing wild-type or Site 4 mutant IL-3 receptor with IL-3 and the transcriptome was characterised using RNA sequencing.
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Project description:Despite extensive investigation, it remains a paradox that IL-2 and IL-15 can differentially modulate the immune response using the same signaling receptors. In our previous work, we dissected the phosphotyrosine-driven signaling cascades triggered by both cytokines in Kit225 T-cells unveiling subtle differences that may contribute to their functional dichotomy. In the present study, we aimed to decipher the receptor complex assembly in IL-2- and IL-15-activated T-lymphocytes that is fine tune orchestrated by site-specific phosphorylation events. Comparing the cytokine-induced interactome of the interleukin receptor beta and gamma subunits shared by the two cytokines, we defined the components of the early IL-2 and IL-15 receptor-associated complex discovering novel constituents such as FAM59A and SOCS2. Additionally, phosphopeptide-directed analysis allowed us to detect several cytokine-dependent and –independent phosphorylation events within the activated receptor complex including novel phosphorylated sites located in the cytoplasmic region of IL-2Rβ. We proved that the distinct phosphorylations induced by the cytokines serve for recruiting different types of effectors to the initial receptor/ligand complex. Whereas IL-2Rβ pS431 binds to clathrins, which are involved in the receptor internalization and subsequent signal attenuation, IL-2Rγ pY325 and pY357 attract phosphatases, adaptor proteins, kinases as well as the newly identified member of the interleukin receptor complex SOCS2. Overall our study sheds new light into the initial molecular mechanisms triggered by IL-2 and IL-15 and constitutes a further step towards a better understanding of the early signaling aspects of the two closely-related cytokines in T-lymphocytes.
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Project description:Interleukin-17A (IL-17A) is a key mediator of protective immunity to yeast and bacterial infections but also drives the pathogenesis of several autoimmune diseases, such as psoriasis or psoriatic arthritis. Here, we show that the tetra-transmembrane protein CMTM4 is a subunit of the IL-17 receptor (IL-17R). CMTM4 constitutively associated with IL-17R subunit C (IL-17RC) to mediate its stability, posttranslational modification, and plasma membrane localization. Both mouse and human cell lines deficient in CMTM4 were largely unresponsive to IL-17A, due to their inability to assemble the IL-17 receptor signaling complex. Accordingly, CMTM4-deficient mice were largely resistant to experimental psoriasis. Collectively, our data identified CMTM4 as an essential component of the IL-17 receptor and a potential therapeutic target for treating IL-17-mediated autoimmune diseases.
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Project description:Reactivation of androgen receptor (AR) may drive recurrent prostate cancer in castrate patients. Ack1 tyrosine kinase is overexpressed in prostate cancer and promotes castrate resistant xenograft tumor growth and enhances androgen target gene expression and AR recruitment to enhancers. Ack1 phosphorylates AR at Tyr-267 in the N-terminal transactivation domain. In this study, the role of this phosphorylation site was investigated by characterizing the phosphorylation site mutant in the context of full length and truncated AR lacking the ligand-binding domain. The Y267F mutant showed decreased transactivation of reporters. Expression of wild type full length and truncated AR in LNCaP cells increased cell proliferation in androgen-depleted conditions and increased colony formation. However, the Y267F mutant of full length and truncated AR was defective in stimulating cell proliferation. The full length AR Y267F mutant was defective in nuclear translocation induced by androgen or Ack1 kinase. The truncated AR was constitutively localized to the nucleus. Chromatin immunoprecipitation analysis showed that it was recruited to the target enhancers without androgen. The truncated Y267F AR mutant did not exhibit constitutive nuclear localization and androgen enhancer binding activity. Expression of AR responsive genes in cells expressing truncated AR wt and AR-Y267F mutant under androgen deprived conditions was assessed by microarray gene expression analysis. The AR pathway score was increased in cells expressing truncated AR wt and decreased in cells expressing truncated AR-Y267F. These results support the concept that phosphorylation of Tyr-267 is required for AR nuclear translocation and recruitment and DNA binding and transcription of AR responsive genes. Gene expression profiling was performed using RNA samples from LNCaP cells expressing truncated AR-wt and truncated AR-Y267F growing in androgen deprived conditions. The RNA sample from vector control cells were used as reference sample. Two biological replicates were used per each cell line.
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