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DHX36 resolves G-rich structures in mRNA untranslated region to allow their translation [PAR-CLIP-seq]

ABSTRACT: DHX36 is a ATP-dependent, 3´-5´ RNA helicase of the DEAH family. Previous publications reported this helicase to associate with AU-rich elements and to specifically unwind G-quadruplex structures. Here, we performed PAR-CLIP in duplicates to specifically crosslink DHX36 and helicase-dead DHX36 E335A to its RNA binding targets in HEK293 cells. After sequencing and mapping to the human genome at nucleotide-resolution level we combined sequencing reads to a total of over 60000 binding clusters on more than 9000 transcripts. Distribution analyses revealed that DHX36 binds mainly to CDSs and 3´UTRS of mRNAs. Also, a G-rich binding motif for DHX36 was identified.

ORGANISM(S): Homo sapiens

PROVIDER: GSE105171 | GEO | 2019/07/01

REPOSITORIES: GEO

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DHX36 resolves G-rich structures in mRNA untranslated region to allow their translation [ChrRNA-seq]

Project description:DHX36 is a ATP-dependent, 3´-5´ RNA helicase of the DEAH family. Previous publications reported this helicase to associate with AU-rich elements and to specifically unwind G-quadruplex structures. Here, we performed RNA-seq in triplicats of HEK293 wildtype cells and DHX36-KO-HEK293 cells to identify changes in RNA abundance upon presence or absence of this helicase. After sequencing and mapping to the human genome at nucleotide-resolution level we analysed the mRNA abundance of target mRNAs, identified in this study (see PAR-CLIP). Our analyses show that binding of DHX36 to 3´UTRS of target mRNAs significantly reduce their abundance.

2019-07-01 | GSE105169 | GEO

DHX36 resolves G-rich structures in mRNA untranslated region to allow their translation [cPDS-RNA-seq]

2019-07-01 | GSE105170 | GEO

DHX36 resolves G-rich structures in mRNA untranslated region to allow their translation [Ribo-Seq]

Project description:DHX36 is a ATP-dependent, 3´-5´ RNA helicase of the DEAH family. Previous publications reported this helicase to associate with AU-rich elements and to specifically unwind G-quadruplex structures. Here, we performed Ribosome footprintin in triplicats of HEK293 wildtype cells and DHX36-KO-HEK293 cells to identify changes in ribosome occupancy on mRNAs upon presence or absence of this helicase. After sequencing and mapping to the human genome at nucleotide-resolution level we analysed the coverage of ribosomes on target mRNAs, identified in this study (see PAR-CLIP). Our analyses show that only minor changes upon DHX36 knockout can be observed.

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DHX36 is the missing link to understand RNA G-quadruplex structures, mRNA stability, and translation [RNA-seq]

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DHX36 binding induces RNA structurome remodeling and regulates RNA abundance via m6A/YTHDF1

Project description:RNA structure constitutes a new layer of gene regulatory mechanisms. RNA binding proteins can modulate RNA secondary structures, thus participating in post-transcriptional regulation. The DEAH-box helicase 36 (DHX36) is known to bind and unwind RNA G-quadruplex (rG4) structure but the transcriptome-wide RNA structure remodeling induced by DHX36 binding and the impact on RNA fate remain poorly understood. Here, we investigate the RNA structurome alteration induced by DHX36 depletion. Our findings reveal that DHX36 binding induces structure remodeling not only at the localized binding sites but also on the entire mRNA transcript most pronounced in3’UTR regions. DHX36 binding increase structural accessibility at 3’UTRs which is correlated with decreased post-transcriptional mRNA abundance. Further analyses and experiments uncover that DHX36 binding sites are enriched for N6-methyladenosine (m6A) modification and YTHDF1 binding; and DHX36 induced structural change may facilitate YTHDF1 binding to m6A sites leading to RNA degradation. Altogether, our findings uncover the structural remodeling effect of DHX36 binding and its impact on RNA abundance through regulating m6A dependent YTHDF1 binding.

2024-10-03 | GSE264642 | GEO

Transcriptomic RNA structure mapping unveils the structure dynamic induced by DHX36 binding (RBNS)

Project description:RNA binding proteins can modulate RNA secondary structures, thus participating in post-transcriptional regulation. The DEAH-box helicase 36 (DHX36) has a remarkable ability to bind and unwind RNA G-quadruplex (rG4) and duplex. However, the transcriptome-wide RNA structure dynamic induced by DHX36 and how structure change subsequently influences RNA fate remain poorly understood. Here, we first identify the endogenous binding sites and specificity of DHX36 based on binding profiles. Next, we capture in vivo RNA structuromes to investigate the structure change of DHX36-bound mRNAs following DHX36 knockout. DHX36 induces structure remodeling on not only the localized binding sites but also the other sites across the entire mRNA especially in 3’UTR. DHX36-induced more accessible structures of 3’UTR are revealed to correlate with post-transcriptional mRNA decrease. Furthermore, we demonstrate that DHX36 binding sites are enriched for N6-methyladenosine (m6A) modification and YTHDF1 binding. Finally, we experimentally validate that YTHDF1 binding is repelled to DHX36 loss-induced structure inaccessibility and YTHDF1 loss-induced mRNA stabilization could be a source of DHX36 loss-induced mRNA increase. Altogether, our findings uncover the effect of DHX36 binding on in vivo mRNA structure and propose a plausible mechanism of how RNA secondary structure change involves in post-transcriptional regulation through orchestrating YTHDF1 binding.

2024-10-03 | GSE237159 | GEO

Transcriptomic RNA structure mapping unveils the structure dynamic induced by DHX36 binding (Structure-seq)

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Project description:In this study, we deciphered the functions of Dhx36 and related molecular mechanisms in muscle stem cells and muscle regeneration. We found Dhx36 was highly induced in activated muscle stem cells during regeneration induced by injury. Conditional inactivation of Dhx36 in mouse muscle stem cells caused significant impaired regeneration, which was due to the dramatically decreased cell proliferation. Dhx36 was a well-known RNA helicase for binding/unwinding DNA/RNA G-quadruplexes and it was dominantly expressed in cytoplasm of proliferating myoblast. To examine whether Dhx36 regulates translation process, we conducted polysome profiling followed by RNA-seq in WT and Dhx36 KO myoblast cells.

2021-04-27 | GSE151123 | GEO

System-wide analysis of Dhx36 function in skeletal muscle satellite cells reveals its binding with 5’UTR G4 structure to promote Gnai2 RNA translation [CLIP-seq]

Project description:In this study, we deciphered the functions of Dhx36 and related molecular mechanisms in muscle stem cells and muscle regeneration. We found Dhx36 was highly induced in activated muscle stem cells during regeneration induced by injury. Conditional inactivation of Dhx36 in mouse muscle stem cells caused significant impaired regeneration, which was due to the dramatically decreased cell proliferation. Dhx36 was a well-known RNA helicase for binding/unbinding DNA/RNA G-quadruplexes and it was dominantly expressed in cytoplasm of proliferating myoblast. Therefore CLIP-seq was conducted to identify the mRNAs interacting with Dhx36 in myoblast cells.

2021-04-27 | GSE151122 | GEO

DNA/RNA helicase DHX36 is required for late stages of spermatogenesis

Project description:Spermatogenesis is a highly complex developmental process that typically consists of mitosis, meiosis, and spermiogenesis. DNA/RNA helicase DHX36, a unique guanine-quadruplex (G4) resolvase, play crucial roles in a variety of biological processes. We previously showed that DHX36 is highly expressed in male germ cells with the highest level in zygotene spermatocytes. Here, we delete Dhx36 in advanced germ cells with Stra8-GFPCre, and found that a Dhx36 deficiency in the differentiated spermatogonia leads to meiotic defects and abnormal spermiogenesis. These defects in late stages of spermatogenesis arise from dysregulated transcription of G4-harboring genes, which are required for meiosis. Thus, this study reveals that Dhx36 play crucial roles in the late stages of spermatogenesis.

2022-11-24 | GSE218477 | GEO

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