Agricultural Technology Research Institute

Animal Technology Institute Taiwan

Stresspro Biomedicine Incorporation

Yu-Hsyu Su

Chin-Kai Chuang

Wen-Chuan Lee

Ming-Yu Chen

Chiu-Ting Fan

Tai-Yun Lin

Jung-Chuan Yu

A synthetic peptide that targets cancer stem cells is provided. The peptide consists of the amino acid sequence of anyone of SEQ ID NO: 1 to SEQ ID NO: 15. Also provided is a composition comprising said synthetic peptide with a therapeutic agent fused thereto, and a pharmaceutically acceptable carrier or diluent. Further provided is a method of screening a peptide specifically targeting to a cancer stem cell. The method comprises the steps of establishing an oligopeptide library by using a phage expression system, contacting the library with a culture of bulk tumor cells of a cancer cell line, contacting the phages which do not bind to the bulk tumor cells with a culture of cancer stem cells of said cancer cell line, and screening a peptide specifically targeting to a cancer stem cell from the phages which bind to the cancer stem cells.

Cancer stem cell targeting peptide and use thereof

Expression system for enhancing solubility and immunogenicity of recombinant proteins. The expression system includes a protein expression vector that contains a chimeric gene encoding a chimeric protein comprising: (a) a first polypeptidyl fragment at the N-terminal end of the chimeric protein, containing a protein transduction domain (PTD), or a fragment thereof, having HIV Tat PTD activity; (b) a second polypeptidyl fragment at the C-terminal end of the first polypeptidyl fragment, containing a J-domain, or a fragment thereof, having heat shock protein 70 (Hsp70)-interacting activity; and (c) a third polypeptidyl fragment at the C-terminal end of the second polypeptidyl fragment, containing a target protein or polypeptide.

Expression system for enhancing solubility and immunogeneicity of recombinant proteins

Expression system for enhancing solubility and immunogenicity of recombinant proteins. The expression system includes a protein expression vector that contains a chimeric gene encoding a chimeric protein. The chimeric protein contains three polypeptidyl fragments: (a) a first polypeptidyl fragment at the N-terminal end of the chimeric protein that contains a protein transduction domain (PTD) or a fragment thereof having HIV Tat PTD activity; (b) a second polypeptidyl fragment at the C-terminal end of the first polypeptidyl fragment that contains a J-domain or a fragment thereof having heat shock protein 70 (Hsp70)-interacting activity; and (c) a third polypeptidyl fragment at the C-terminal end of the second polypeptidyl fragment that contains a target protein or polypeptide.

Growing community of inventors

Taipei, Taiwan

Yu-Hsyu Su