About: Enhancer RNA

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Enhancer RNAs (eRNAs) represent a class of relatively long non-coding RNA molecules (50-2000 nucleotides) transcribed from the DNA sequence of enhancer regions. They were first detected in 2010 through the use of genome-wide techniques such as RNA-seq and ChIP-seq. eRNAs can be subdivided into two main classes: 1D eRNAs and 2D eRNAs, which differ primarily in terms of their size, polyadenylation state, and transcriptional directionality. The expression of a given eRNA correlates with the activity of its corresponding enhancer in target genes. Increasing evidence suggests that eRNAs actively play a role in transcriptional regulation in cis and in trans, and while their mechanisms of action remain unclear, a few models have been proposed.

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  • الرنا المعزز أو الرنا المحسِّن (بالإنجليزية: Enhancer RNA)‏ هو قسم من جزيئات الرنا غير المشفرة القصيرة نسبيا (50-2000 نيوكليوتيد) وتُنسخ من تسلسلات الدنا الخاصة بالمعززات. تم اكتشافها أول مرة سنة 2010 عبر استخدام تقنيات عالية الإنتاج مثل سَلسَلة الرنا . يمكن تقسيم الرنا المعزز إلى قسمين فرعيين: الرنا المعزز 1D والرنا المعزز 2D ويختلفان في طولهما وحالة التذييل بعديد الأدينين واتجاهية النسخ. يبدو أن التعبير عن رنا معزز معين له علاقة بنشاط المعزز الخاص به. تقترح دلائل متزايدة أن جزيئات الرنا المعزز تلعب دورا نشطا في تنظيم النسخ ورغم أن آليات عملها مازالت غير واضحة، فقد تم اقتراح بعض الآليات. (ar)
  • Enhancer RNAs (eRNAs) represent a class of relatively long non-coding RNA molecules (50-2000 nucleotides) transcribed from the DNA sequence of enhancer regions. They were first detected in 2010 through the use of genome-wide techniques such as RNA-seq and ChIP-seq. eRNAs can be subdivided into two main classes: 1D eRNAs and 2D eRNAs, which differ primarily in terms of their size, polyadenylation state, and transcriptional directionality. The expression of a given eRNA correlates with the activity of its corresponding enhancer in target genes. Increasing evidence suggests that eRNAs actively play a role in transcriptional regulation in cis and in trans, and while their mechanisms of action remain unclear, a few models have been proposed. (en)
  • Gli RNA enhancer (eRNA) rappresentano una classe di molecole di RNA non codificanti relativamente lunghe (50-2000 nucleotidi) trascritte dalla sequenza di DNA delle regioni enhancer (intensificatrici). Sono stati rilevati per la prima volta nel 2010, attraverso l'uso di tecniche quali RNA-seq e ChIP-seq . Gli eRNA possono essere suddivisi in due classi principali: eRNA 1D ed eRNA 2D, che differiscono principalmente in termini di dimensioni, stato di poliadenilazione e direzionalità trascrizionale. L'espressione di un dato eRNA è correlata con l'attività del suo corrispondente enhancer nei geni bersaglio. Un numero sempre maggiore di studii suggerisce che gli eRNA svolgono un ruolo attivo nella regolazione trascrizionale in cis e in trans e, sebbene i loro meccanismi d'azione rimangano poco chiari, sono stati proposti alcuni modelli. (it)
  • 強化子RNA(Enhancer RNA,簡稱eRNA)是真核生物基因組中強化子序列轉錄產生的非編碼RNA,長50nt至4000nt之間,此類RNA於2010年由RNA測序與ChIP-seq等大規模測序技術測得。強化子為基因組中與RNA聚合酶Ⅱ、中介體和轉錄因子結合以啟動基因轉錄的重要序列,其轉錄生成的強化子RNA大多留在細胞核中,此類RNA大多不穩定,易被細胞核中的外切體降解,但可能可調控其他基因的轉錄。並非所有強化子皆可轉錄,有研究顯示僅有少數強化子可轉錄產生出eRNA,可能為較為活躍的強化子。有些強化子RNA具複雜的次級結構,並帶有m6A等鹼基修飾。 強化子RNA可分為1D eRNA與2D eRNA兩大類,兩者長度、多腺苷酸化情況與轉錄方向皆有差異,1D eRNA的轉錄為單向,長度可達數千nt,較常被多腺苷酸化,一般由/比值較低的強化子轉錄;2D eRNA的轉錄則為雙向,且長度較短,介於50nt至2000nt之間,轉錄的強化子H3K4me1/H3K4me3較高。 有研究認為強化子RNA僅是基因轉錄的中的雜訊,即由染色體結構疏鬆的區域所隨機轉錄產生、不具重要功能的RNA,但有許多研究認為強化子RNA可能具重要的轉錄調控功能,可影響特定基因的表現,其詳細機制尚不明朗,但目前已有數個假說被提出,有些強化子RNA可能可和組蛋白修飾酶或轉錄因子等調控蛋白結合,以促進該強化子所控制基因的轉錄,例如周期蛋白D1基因強化子轉錄出的eRNA可結合組蛋白乙醯轉移酶以促進周期蛋白D1的轉錄,受p53調控的各目標基因之強化子p53BER也可轉錄出eRNA以促進各目標基因轉錄;還有些強化子RNA可能可調控其他較遠位點的基因的轉錄。有eRNA可能可作為一些癌症病理狀況的生物標記。 (zh)
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  • الرنا المعزز أو الرنا المحسِّن (بالإنجليزية: Enhancer RNA)‏ هو قسم من جزيئات الرنا غير المشفرة القصيرة نسبيا (50-2000 نيوكليوتيد) وتُنسخ من تسلسلات الدنا الخاصة بالمعززات. تم اكتشافها أول مرة سنة 2010 عبر استخدام تقنيات عالية الإنتاج مثل سَلسَلة الرنا . يمكن تقسيم الرنا المعزز إلى قسمين فرعيين: الرنا المعزز 1D والرنا المعزز 2D ويختلفان في طولهما وحالة التذييل بعديد الأدينين واتجاهية النسخ. يبدو أن التعبير عن رنا معزز معين له علاقة بنشاط المعزز الخاص به. تقترح دلائل متزايدة أن جزيئات الرنا المعزز تلعب دورا نشطا في تنظيم النسخ ورغم أن آليات عملها مازالت غير واضحة، فقد تم اقتراح بعض الآليات. (ar)
  • Enhancer RNAs (eRNAs) represent a class of relatively long non-coding RNA molecules (50-2000 nucleotides) transcribed from the DNA sequence of enhancer regions. They were first detected in 2010 through the use of genome-wide techniques such as RNA-seq and ChIP-seq. eRNAs can be subdivided into two main classes: 1D eRNAs and 2D eRNAs, which differ primarily in terms of their size, polyadenylation state, and transcriptional directionality. The expression of a given eRNA correlates with the activity of its corresponding enhancer in target genes. Increasing evidence suggests that eRNAs actively play a role in transcriptional regulation in cis and in trans, and while their mechanisms of action remain unclear, a few models have been proposed. (en)
  • Gli RNA enhancer (eRNA) rappresentano una classe di molecole di RNA non codificanti relativamente lunghe (50-2000 nucleotidi) trascritte dalla sequenza di DNA delle regioni enhancer (intensificatrici). Sono stati rilevati per la prima volta nel 2010, attraverso l'uso di tecniche quali RNA-seq e ChIP-seq . Gli eRNA possono essere suddivisi in due classi principali: eRNA 1D ed eRNA 2D, che differiscono principalmente in termini di dimensioni, stato di poliadenilazione e direzionalità trascrizionale. L'espressione di un dato eRNA è correlata con l'attività del suo corrispondente enhancer nei geni bersaglio. Un numero sempre maggiore di studii suggerisce che gli eRNA svolgono un ruolo attivo nella regolazione trascrizionale in cis e in trans e, sebbene i loro meccanismi d'azione rimangano poco (it)
  • 強化子RNA(Enhancer RNA,簡稱eRNA)是真核生物基因組中強化子序列轉錄產生的非編碼RNA,長50nt至4000nt之間,此類RNA於2010年由RNA測序與ChIP-seq等大規模測序技術測得。強化子為基因組中與RNA聚合酶Ⅱ、中介體和轉錄因子結合以啟動基因轉錄的重要序列,其轉錄生成的強化子RNA大多留在細胞核中,此類RNA大多不穩定,易被細胞核中的外切體降解,但可能可調控其他基因的轉錄。並非所有強化子皆可轉錄,有研究顯示僅有少數強化子可轉錄產生出eRNA,可能為較為活躍的強化子。有些強化子RNA具複雜的次級結構,並帶有m6A等鹼基修飾。 強化子RNA可分為1D eRNA與2D eRNA兩大類,兩者長度、多腺苷酸化情況與轉錄方向皆有差異,1D eRNA的轉錄為單向,長度可達數千nt,較常被多腺苷酸化,一般由/比值較低的強化子轉錄;2D eRNA的轉錄則為雙向,且長度較短,介於50nt至2000nt之間,轉錄的強化子H3K4me1/H3K4me3較高。 (zh)
rdfs:label
  • رنا معزز (ar)
  • Enhancer RNA (en)
  • RNA enhancer (it)
  • 強化子RNA (zh)
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