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Identification of activity of anti-HPV16 E7-ribozyme expressed in CV-1 cells

机译:鉴定在CV-1细胞中表达的抗HPV16 E7核酶的活性

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Studies in recent years have demonstrated that HPV16 (human papilloma-virus type 16) E6 and E7 gene expression plays an important role in the pathogenesis and the maintenance of malignant phenotype of anogenital cancer, particularly of cervical cancer. It was proved that anti-HPV16 E7-ribozyme was able to specifically cleave the E7 mRNA fragment in vitro. We studied the expression of ribozyme in eucaryotic cells by means of T7-vaccinia virus delivery system. The results showed that CV-1 cells were able to produce the anti-HPV16 E7-ribozyme molecules with specific catalytic cleavage activity in vitro; meanwhile, it was observed that the ribozyme could lead to reduction of HPV16 E7 mRNA in cells. In this note, it was also demonstrated that ribozyme possessed some biological activity in eucaryotic cells and could reverse the malignant phenotype of HPV-positive cervical cancer cells.
机译:近年来的研究表明,HPV16(人乳头瘤病毒16型)E6和E7基因表达在生殖器癌,特别是宫颈癌的恶性表型的发病机理和维持中起着重要作用。证明抗HPV16 E7核酶能够在体外特异性切割E7 mRNA片段。我们通过T7-牛痘病毒传递系统研究了核酶在真核细胞中的表达。结果表明,CV-1细胞能够在体外产生具有特异性催化裂解活性的抗HPV16 E7核酶。同时,观察到核酶可导致细胞中HPV16 E7 mRNA的减少。在此说明中,还证明了核酶在真核细胞中具有一定的生物学活性,并且可以逆转HPV阳性宫颈癌细胞的恶性表型。

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