The combination of engineering antibody and plant biotechnology creates the plantibody. It has been reported that the engineering antibodies expressed in plant, no matter whether they are intact or small-molecular ant...The combination of engineering antibody and plant biotechnology creates the plantibody. It has been reported that the engineering antibodies expressed in plant, no matter whether they are intact or small-molecular antibodies, keep their antigen-binding specificity, which means they are functional.This trait makes plantibody notable. Now the researches are focused mainly on the following three aspects: ( ⅰ ) Therapeutic antibody in clinic. It is expected to offer the opportunity of large-scale antibody production in agriculture systems, for the purpose of decreasing the cost greatly. Moreover, the property of multiple sexual hybridization between plants can be used to produce bi-or multi-functional antibodies and create new antibody medicines. (ⅱ) Plant physiology. Engineering antibodies against plant hormones or some active materials can block their activities in plant, so the trait of plantibody could be used to study the growth and development of plant. ( ⅲ ) Plant disease-resistance. The gene of展开更多
The origin and the recent progress of pollen_tube pathway method (PTPM) is described. The results of transforming wheat during 1990 to 1994 are reported briefly. They are: (ⅰ) Transformation frequencies were 3%-6%, e...The origin and the recent progress of pollen_tube pathway method (PTPM) is described. The results of transforming wheat during 1990 to 1994 are reported briefly. They are: (ⅰ) Transformation frequencies were 3%-6%, even reached 13.5%; (ⅱ) the genetic expression of four continuous generations obtained from single individuals of transgenic plants by self_fertilization was investigated. Plants with higher expression of foreign gene were found in every generation (from T1 to T4), but a phenomenon of gene silence, in which the genotype contained foreign gene but did not express, was also observed. In addition, from the angle of fertilization biology the transformation mechanism of PTPM (or PTDM) was analyzed and discussed. It was considered that the essential principle of this method was just like that of protoplast method.展开更多
文摘The combination of engineering antibody and plant biotechnology creates the plantibody. It has been reported that the engineering antibodies expressed in plant, no matter whether they are intact or small-molecular antibodies, keep their antigen-binding specificity, which means they are functional.This trait makes plantibody notable. Now the researches are focused mainly on the following three aspects: ( ⅰ ) Therapeutic antibody in clinic. It is expected to offer the opportunity of large-scale antibody production in agriculture systems, for the purpose of decreasing the cost greatly. Moreover, the property of multiple sexual hybridization between plants can be used to produce bi-or multi-functional antibodies and create new antibody medicines. (ⅱ) Plant physiology. Engineering antibodies against plant hormones or some active materials can block their activities in plant, so the trait of plantibody could be used to study the growth and development of plant. ( ⅲ ) Plant disease-resistance. The gene of
文摘The origin and the recent progress of pollen_tube pathway method (PTPM) is described. The results of transforming wheat during 1990 to 1994 are reported briefly. They are: (ⅰ) Transformation frequencies were 3%-6%, even reached 13.5%; (ⅱ) the genetic expression of four continuous generations obtained from single individuals of transgenic plants by self_fertilization was investigated. Plants with higher expression of foreign gene were found in every generation (from T1 to T4), but a phenomenon of gene silence, in which the genotype contained foreign gene but did not express, was also observed. In addition, from the angle of fertilization biology the transformation mechanism of PTPM (or PTDM) was analyzed and discussed. It was considered that the essential principle of this method was just like that of protoplast method.