What is the difference between targeted drugs and chemotherapy drugs?

The mechanism of action of these two drugs is completely different. Chemotherapeutic drugs are a universal cancer cell killing effect, while targeted drugs are specific cancer cell killing effects targeting targets.

1. Targeted drugs are a kind of effective drugs for treating tumors at present. Targeted drugs are mainly used for different types of tumors, and different drugs are used for symptomatic treatment. There is a special protein on tumor cells, such as A, B, C and D, and targeted drugs are aimed at these protein on tumor cells. If the protein on tumor cells is A, then the target of targeted drugs is A. Therefore, targeted therapy of tumor can well control the growth of malignant tumor cells, and at the same time, it can beat the tumor cells to death and play an anti-tumor role.

Second, chemotherapy drugs are a kind of drugs to treat tumors. Chemotherapy drugs can kill tumor cells. These drugs can act on different links of tumor cell growth and reproduction, and inhibit or kill tumor cells. Chemotherapy is one of the main methods to treat tumors at present.

Three, the classification method of chemotherapy drugs

1. is a traditional classification method: according to the source and chemical structure of drugs, they are divided into alkylating agents, antimetabolites, anticancer antibiotics, plants, hormones and miscellaneous.

2. According to the different effects of drugs on cell proliferation dynamics, they are divided into cell cycle specific drugs and cell cycle nonspecific drugs.

3. According to the therapeutic mechanism, it can be divided into drugs that directly act on tumor cells and drugs that indirectly act by enhancing the immune function or endocrine system of the body, such as traditional Chinese medicine, immunostimulants and hormones.

4. The above classification has great guiding significance for clinical rational drug use, but it is more complicated. For convenience, cell cycle nonspecific drugs and phase nonspecific drugs are generally called cell cycle nonspecific drugs, including most alkylating agents and anticancer antibiotics in traditional classification; The third kind of drugs are called cell cycle-specific drugs, including most of the anti-metabolic and plant anticancer drugs in the traditional classification.

Fourth, the side effects of chemotherapy drugs: all anti-tumor chemotherapy drugs used in clinic have different degrees of side effects, and some serious side effects are the direct reasons for limiting the dosage or use of drugs. While killing tumor cells, it also kills normal tissue cells, especially blood and lymphoid tissue cells that grow vigorously in human body. These cells and tissues are the important immune defense system of human body, which destroys the immune system of human body, and cancer may develop rapidly and cause serious consequences.