Plant Cell expressing target protein， Method of Preparing the Same and Method of Preparing Target Protein Using the Same

The present invention relates to a plant cell expressing a target protein， a method for producing the same， and a method for producing a target protein using the same. A recombinant vector containing a gene encoding a protein of interest is introduced into the plant cell， and the plant cell includes stem cells (CMC) or callus derived from the plant cambium. At this time， the plant cambium-derived stem cells (CMC) are plant-derived cell lines containing innately undifferentiated cells isolated from plants， and the cell line is separated from the cambium tissue of the plant， and division without dedifferentiation into callus It is characterized by having an organizational continuity. The target protein expression system according to the present invention solves the problems of conventional plant cell culture and enables the mass production of target proteins including biopharmaceutical proteins due to the breakthrough transformation rate， thereby enabling the commercialization of biopharmaceuticals such as plant-derived protein products. What makes it possible is useful.