Extractable nuclear antigens (ENAs) are over 100 different soluble cytoplasmic and nuclear antigens. They are known as "extractable" because they can be removed from cell nuclei using saline and represent six main proteins: Ro, La, Sm, RNP, Scl-70, Jo1. Most ENAs are part of spliceosomes or nucleosomes complexes and are a type of small nuclear ribonucleoprotein (snRNPS). The location in the nucleus and association with spliceosomes or nucleosomes results in these ENAs being associated with additional RNA and proteins such as polymerases. This quality of ENAs often makes it difficult to purify and quantify their presence for clinical use.
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| - Extractable nuclear antigen (en)
- Antigeni nucleari estraibili (it)
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| - Extractable nuclear antigens (ENAs) are over 100 different soluble cytoplasmic and nuclear antigens. They are known as "extractable" because they can be removed from cell nuclei using saline and represent six main proteins: Ro, La, Sm, RNP, Scl-70, Jo1. Most ENAs are part of spliceosomes or nucleosomes complexes and are a type of small nuclear ribonucleoprotein (snRNPS). The location in the nucleus and association with spliceosomes or nucleosomes results in these ENAs being associated with additional RNA and proteins such as polymerases. This quality of ENAs often makes it difficult to purify and quantify their presence for clinical use. (en)
- Gli antigeni nucleari estraibili, noti anche come ENA (sigla dell'inglese extractable nuclear antigens), sono componenti del nucleo cellulare che possono essere legati da anticorpi e causare una risposta immunitaria. Possono essere coinvolti nella patogenesi di numerose malattie autoimmuni quando vengono riconosciuti e legati da specifici autoanticorpi. (it)
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| - Extractable nuclear antigens (ENAs) are over 100 different soluble cytoplasmic and nuclear antigens. They are known as "extractable" because they can be removed from cell nuclei using saline and represent six main proteins: Ro, La, Sm, RNP, Scl-70, Jo1. Most ENAs are part of spliceosomes or nucleosomes complexes and are a type of small nuclear ribonucleoprotein (snRNPS). The location in the nucleus and association with spliceosomes or nucleosomes results in these ENAs being associated with additional RNA and proteins such as polymerases. This quality of ENAs often makes it difficult to purify and quantify their presence for clinical use. (en)
- Gli antigeni nucleari estraibili, noti anche come ENA (sigla dell'inglese extractable nuclear antigens), sono componenti del nucleo cellulare che possono essere legati da anticorpi e causare una risposta immunitaria. Possono essere coinvolti nella patogenesi di numerose malattie autoimmuni quando vengono riconosciuti e legati da specifici autoanticorpi. Tali antigeni sono circa un centinaio, ma solo sei sono utilizzati diffusamente nelle indagini di laboratorio: Ro, La, Sm, RNP, Scl-70 e Jo1. La presenza di anticorpi diretti verso tali antigeni rappresenta spesso un biomarcatore molto sensibile o molto specifico per determinate malattie, tra le quali il lupus eritematoso sistemico, l'artrite reumatoide e la sclerodermia. (it)
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