JP2021525762A - マイクロrnaを抑制する変形核酸及びその用途 - Google Patents
マイクロrnaを抑制する変形核酸及びその用途 Download PDFInfo
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Abstract
Description
Claims (11)
- マイクロRNAを抑制する変形核酸において、
前記変形核酸は、少なくとも6個以上のヌクレオチドで構成されたマイクロRNA標的サイト配列を少なくとも2個以上連続的に含み、
前記マイクロRNA標的サイト配列は、
1)マイクロRNAの5’末端から2番目から7番目まで又は3番目から8番目までの塩基に相補的な配列;
2)マイクロRNAの5’末端から2番目から7番目までの塩基に相補的な配列であると共に5番目と6番目塩基の間にバルジ(bulge)を含む配列;又は
3)マイクロRNAの5’末端から2番目から7番目まで又は3番目から8番目までの塩基に相補的な配列であると共にG:A又はG:Uウォブル(wobble)塩基配列を相補的に含む配列;からなる群より選択された一つであってもよく、
前記マイクロRNA標的サイト配列間の間には、少なくとも1個以上の塩基が非塩基スペーサー(abasic spacer)に置換されることを特徴とする、マイクロRNAを抑制する変形核酸。 - 前記マイクロRNAは、miR−1であることを特徴とする、請求項1に記載のマイクロRNAを抑制する変形核酸。
- 前記マイクロRNAを抑制する変形核酸は、5’−ACAUUCCA−3’又は5’−AAAUUCCA−3’配列を含むことを特徴とする、請求項1に記載のマイクロRNAを抑制する変形核酸。
- 前記マイクロRNAを抑制する変形核酸は、前記5’−ACAUUCCA−3’配列を少なくとも2個以上連続して含み、前記配列の前後に非塩基スペーサー(abasic spacer)を少なくとも一つ以上含むことを特徴とする、請求項3に記載のマイクロRNAを抑制する変形核酸。
- 前記マイクロRNAを抑制する変形核酸は、5’−AAAUUCCA−3’配列を少なくとも2個以上連続して含み、前記配列の前後に非塩基スペーサー(abasic spacer)を少なくとも一つ以上含むことを特徴とする、請求項3に記載のマイクロRNAを抑制する変形核酸。
- 前記マイクロRNA標的サイト配列は、マイクロRNAのシード領域(seed region)に相補的なヌクレオチドを6〜8個含むことを特徴とする、請求項1に記載のマイクロRNAを抑制する変形核酸。
- 前記シード領域(seed region)は、マイクロRNAの5’末端を基準として1番目から8番目の間の配列であることを特徴とする、請求項6に記載のマイクロRNAを抑制する変形核酸。
- 前記非塩基スペーサー(abasic spacer)は、塩基を含まない非塩基リボ核酸スペーサー(rSpacer、rSp)、非塩基核酸スペーサー(dSpacer)、C3 spacer及びC6 spacerからなる群より選択される一つ以上であることを特徴とする、請求項1に記載のマイクロRNAを抑制する変形核酸。
- 1)マイクロRNAの5’末端から2番目から7番目まで又は3番目から8番目までの塩基に相補的な配列;
2)マイクロRNAの5’末端から2番目から7番目までの塩基に相補的な配列であると共に5番目と6番目塩基の間にバルジ(bulge)を含む配列;又は
3)マイクロRNAの5’末端から2番目から7番目まで又は3番目から8番目までの塩基に相補的な配列であると共にG:A又はG:Uウォブル(wobble)塩基配列を相補的に含む配列;からなる群より選択された一つの配列を連続して配列するステップ;及び
前記連続して配列した塩基配列間の間に少なくとも1個以上の塩基を非塩基スペーサー(abasic spacer)に置換して連結するステップ;を含むことを特徴とする、マイクロRNAを抑制する変形核酸の製造方法。 - 請求項1〜請求項8のうちいずれか一項に記載のマイクロRNAを抑制する変形核酸を試験管内(in vitro)細胞に導入させるステップを含むことを特徴とする、マイクロRNAを抑制する方法。
- 請求項1〜請求項8のうちいずれか一項に記載のマイクロRNAを抑制する変形核酸を含むことを特徴とする、遺伝子伝達システム。
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