Recombinant carrier molecule for expression, delivery and purification of target polypeptides
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
A61K-039/02
C12P-021/06
C12N-009/00
C12N-009/24
C12N-001/20
C12N-015/00
C07H-021/04
출원번호
US-0445492
(2012-04-12)
등록번호
US-8591909
(2013-11-26)
발명자
/ 주소
Yusibov, Vidadi
Mett, Vadim
Musiychuk, Konstantin
출원인 / 주소
iBio, Inc.
대리인 / 주소
Fish & Richardson P.C.
인용정보
피인용 횟수 :
3인용 특허 :
79
초록▼
Recombinant carrier molecules having amino acid sequences from thermostable enzymes and methods of use for expression, recovery and delivery of foreign sequences (peptides and polypeptides) produced in different systems (bacteria, yeast, DNA, cell cultures such as mammalian, plant, insect cell cultu
Recombinant carrier molecules having amino acid sequences from thermostable enzymes and methods of use for expression, recovery and delivery of foreign sequences (peptides and polypeptides) produced in different systems (bacteria, yeast, DNA, cell cultures such as mammalian, plant, insect cell cultures, protoplast and whole plants in vitro or in vivo are provided. The recombinant carrier molecule using sequences from lichenase B (Lic B) were also made and used as part of carrier protein to express, recover and deliver a variety of target polypeptides of interest.
대표청구항▼
1. A carrier protein comprising a recombinant carrier molecule, wherein the recombinant carrier molecule has at least 90% amino acid identity to an amino acid sequence of a modified lichenase B (licB) polypeptide that is based on a rearranged amino acid sequence of the Clostridium thermocellum wild-
1. A carrier protein comprising a recombinant carrier molecule, wherein the recombinant carrier molecule has at least 90% amino acid identity to an amino acid sequence of a modified lichenase B (licB) polypeptide that is based on a rearranged amino acid sequence of the Clostridium thermocellum wild-type licB (wild-type licB) amino acid sequence encoded by the nucleic acid sequence set forth in SEQ ID NO: 18, wherein the modified licB polypeptide comprises original N-terminal and C-terminal regions that correspond in sequence to N- and C-terminal polypeptides obtained by splitting the amino acid sequence encoded by SEQ ID NO: 18 within the loop region defined by amino acid residues 82-94 of the amino acid sequence encoded by SEQ ID NO: 18,wherein the modified licB polypeptide comprises the original C-terminal region fused upstream of the original N-terminal region, andwherein the recombinant carrier molecule optionally has a heterologous polypeptide comprising a therapeutic polypeptide or a disease-associated epitope fused thereto. 2. The carrier protein of claim 1, wherein the heterologous polypeptide is fused to the N-terminus or C-terminus of the recombinant carrier molecule. 3. The carrier protein of claim 1, wherein the heterologous polypeptide is fused at an internal location of the recombinant carrier molecule. 4. The carrier protein of claim 1, wherein the recombinant carrier molecule is fused to two or more heterologous polypeptides. 5. The carrier protein of claim 1, wherein the heterologous polypeptide sequence comprises a vaccine antigen. 6. The carrier protein of claim 1, wherein the recombinant carrier molecule has the heterologous polypeptide comprising a therapeutic polypeptide or a disease-associated epitope fused thereto. 7. A method of stimulating an immune response in an animal comprising administering to the animal a composition comprising the carrier protein of claim 1 and a pharmaceutically acceptable carrier, medium or adjuvant, wherein the recombinant carrier molecule has the heterologous polypeptide fused thereto, and wherein the heterologous polypeptide comprises at least one disease-associated antigen. 8. The method of claim 7, wherein the immune response is a humoral immune response. 9. A method for production of a carrier protein in a plant comprising: (a) providing a plant containing an expression cassette having a nucleic acid encoding a carrier protein operably linked to a promoter such that expression of the cassette results in expression of the carrier protein, wherein the carrier protein comprises a recombinant carrier molecule having at least 90% amino acid identity to an amino acid sequence of a modified licB polypeptide that is based on a rearranged amino acid sequence of the Clostridium thermocellum wild-type licB amino acid sequence encoded by the nucleic acid sequence set forth in SEQ ID NO: 18, wherein the modified licB polypeptide comprises original N-terminal and C-terminal regions that correspond in sequence to N- and C-terminal polypeptides obtained by splitting the amino acid sequence encoded by SEQ ID NO: 18 within the loop region defined by amino acid residues 82-94 of the amino acid sequence encoded by SEQ ID NO: 18, wherein the modified licB polypeptide comprises the original C-terminal region fused upstream of the original N-terminal region, and wherein the recombinant carrier molecule optionally has a heterologous polypeptide comprising a therapeutic polypeptide or a disease-associated epitope fused thereto; and(b) growing said plant under conditions in which the nucleic acid is expressed and the carrier protein is produced. 10. The method of claim 9, further comprising the step of recovering the carrier protein. 11. The method of claim 9, wherein the promoter is selected from the group consisting of plant constitutive promoters and plant tissue specific promoters. 12. The method of claim 9, wherein the carrier protein is expressed in leaf, root, or seed of the plant. 13. The method of claim 9, wherein the carrier protein is thermostable.
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