Peptides for inhibition of apoptosis and pharmaceutical compositions containing them
申请人:Ziv Ilan
公开号:US06849603B1
公开(公告)日:2005-02-01
The present invention relates to an isolated and purified peptide of the RY domain having an amino acid sequence of general formula (I) comprising a sequence of the following amino acids: X
1
—X
2
—X
3
—X
4
—X
1
—X
4
—X
4
—X
3
—X
1
, X
1
=Phe, Tyr, or any amino acid having a substituted aromatic residue; X
2
=Glu, Asp, Ser, or any amino acid having a —(CH
2
)
n
—COO residue, wherein n=0-3; X
3
=Asp, Thr, any aliphatic amino acid, or any of amino acids X
4
; and X
4
=Arg, Lys, or any amino acid having a —(CH
2
)
n
—NH
3
+
residue, or a —(CH
2
)
n
—NH—C(NH
3
+
)NH
2
residue wherein n=0-4; as well as functional equivalents thereof. The invention relates also to pharmaceutical compositions comprising a compound of general formula (I), the use of said RY peptide and of said pharmaceutical composition in the preparation of a medicament and in method for the treatment of disorders of inappropriate activation of apoptosis; for increasing the number of viable cells in a biological tissue; and in a method for the enhancement for the survival of biological cells. The invention also relates to a method for the preparation of a RY-peptide of general formula (I). Furthermore, the invention also relates to an in vitro assay system for the regulation of cell death by the Bcl-2 family of test compounds (as hereinbefore defined).
本发明涉及一种具有一般式(I)氨基酸序列的RY结构域的分离和纯化肽,包括以下氨基酸序列:X1—X2—X3—X4—X1—X4—X4—X3—X1,其中X1=Phe、Tyr或具有取代芳香基的任何氨基酸;X2=Glu、Asp、Ser或具有—(CH2)n—COO残基的任何氨基酸,其中n=0-3;X3=Asp、Thr、任何脂肪族氨基酸或任何氨基酸X4;X4=Arg、Lys或具有—(CH2)n—NH3+残基的任何氨基酸,或具有—(CH2)n—NH—C(NH3+)NH2残基的任何氨基酸,其中n=0-4;以及其功能等效物。该发明还涉及包含一般式(I)化合物的药物组合物,以及利用所述RY肽和所述药物组合物制备药物和治疗不恰当激活凋亡的疾病的方法;用于增加生物组织中存活细胞数量的方法;以及用于增强生物细胞存活的方法。该发明还涉及一种制备一般式(I)的RY-肽的方法。此外,该发明还涉及一种用于通过Bcl-2家族的试验化合物(如前文所定义)调节细胞死亡的体外测定系统。