2.RNA interference technology, which uses small RNA to interfere with the expression of specific genes, was listed as the first major breakthrough project of the year by Science in 2002 and entered the clinical stage. At present, it is mainly used to treat tumors.
3.DNA methylation inhibition technology can be used to inhibit abnormal methylation of tumor cells and reduce the occurrence of tumors. However, due to its toxic effect on normal cells, this problem has not been solved and has not yet entered the clinical stage.
4. Gene therapy of DNA vector, by constructing a vector, introduces specific DNA fragments into cells, interferes with the expression of specific genes in cells, and is used to treat diseases such as Parkinson's disease, but the technology is immature, and the safety of the vector constructed with virus is questioned, which is still in the exploration stage.
It is the latest news that viruses are used to treat specific cancers. The virus discovered by AAV2 can effectively kill breast cancer cells, and it is a very new technology to deal with cancer through viruses.