Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Peptide having cell membrane penetrating activity

a cell membrane and peptide technology, applied in the direction of peptide/protein ingredients, antibody medical ingredients, peptide sources, etc., can solve the problems of limited use of in vivo cellular delivery techniques, extremely limited methods for protein delivery, etc., and achieve high efficiency in drug targeting and prominent penetrating efficiency

Inactive Publication Date: 2013-05-23
EWHA UNIV IND COLLABORATION FOUND
View PDF3 Cites 111 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The peptide in this patent has a good ability to penetrate cell membranes, which makes it useful for delivering substances into cells for research and treatment purposes. It can be combined with other substances to form a transmembrane complex, which can be used to deliver drugs or other target substances into cells. This peptide is a promising tool for drug delivery and has potential applications in various fields.

Problems solved by technology

But such methods are of extremely limited usefulness for delivery of proteins.
However, these techniques have, up to date, shown limited usefulness for in vivo cellular delivery.
However, these methods have not proved to be highly reliable or generally useful.
Recently to introduce macromolecules such as a protein into a cell interior, gene therapy becomes in the limelight but this have also problems in that targeting is incorrect.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Peptide having cell membrane penetrating activity
  • Peptide having cell membrane penetrating activity
  • Peptide having cell membrane penetrating activity

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0103]Mapping of PTD Using Various Deletion Forms of TCTP

[0104]In order to confirm the region of the TCTP acting as PTD, various deletion constructs were prepared and then used in the experiment as follows.

1) Isolation and Purification of Deletion Forms of TCTP

[0105]To overexpress each of those deletion forms of TCTP (FIGS. 1a and 1c), pRSET vector that is capable of tagging 6 histidine was employed. Subcloning with DNA sequences corresponding to each deletion forms of TCTP was performed in the multicloning site of the vector. Then, the recombinant expression vector was introduced into E. coli BL21(DE3)(Novagen) or BL21(DE3)pLysS (Novagen). The expression of the deletion forms of TCTP was induced by IPTG (isopropyl β-D-thiogalactoside) for 3 hours, then the protein was isolated and purified by using Ni column which binds to polyhistidine.

2) Cell Culture and Treatment with the Protein

[0106]BEAS-2B cell was treated with the deletion form of TCTP at the concentration of 15 ug / ml for 1 ...

example 2

Confirmation of Cell Penetrating Efficiency of the Peptide of the Present Invention

[0112]As shown in Example 1, in order to confirm that the N-terminus of TCTP can function as a PTD, the peptides consisting of N-terminus of TCTP were constructed and examined for cell penetrating efficiency.

1) Synthesis of Various Peptides Corresponding N-Terminus Amino Acid of TCTP

[0113]TCTP-derived peptides and control peptide, TAT 48-57 were synthesized as follow.

Sequence ofClassificationamino acidSEQ ID No.Residues of TCTP(1-10)MIIYRDLISH1Residues of TCTP(1-9)MIIYRDLIS2Residues of TCTP(1-8)MIIYRDLI3Residues of TCTP(2-10)IIYRDLISH4Residues of TCTP(1-7)MIIYRDL5Residues of TCTP(1-6)MIIYRD6Residues of TCTP(3-10)IYRDLISH7Control TAT(48-57)GRKKRRQRRR19

[0114]N-terminus of each peptides was labeled with fluorescence dye, rhodamine and C-terminus was protected. Peptide purity (>95%) was determined by HPLC. Syntersis of the peptides was requested to PEPTRON, Inc.

[0115]Negative control was a fluorescence dy...

example 3

Identification of Intracellular Translocation of TCTP-Derived Peptide by Fluorescence Microscope

[0126]The intracellular translocation of the peptide was identified by fluorescence microscope. HeLa cells were treated with TCTP (1-9)(SEQ ID No.: 2) at a concentration of 10 μM and 100 μM by the same method of Example 2-2). A point of difference was that HeLa cells were seeded in 12 well-plate covered a glass since the plastic plate had a property of fluorescence interference. After washing, cells on cover glass attached slide glass were observed (FIG. 4).

[0127]As shown in FIG. 4, the peptide of the present invention was weakly translocated at a low concentration of 10 μM and strongly at a high concentration of 100 μM. It was found that the peptides were distributed widely in cytoplasm and nucleus of the cell.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
sizeaaaaaaaaaa
basicaaaaaaaaaa
confocal microscopeaaaaaaaaaa
Login to View More

Abstract

Provided are transmembrane complexes that contain a protein transduction domain (PTD) from the N-terminus of IgE-dependent histamine-releasing factor (HRF) and a target substance that is to be delivered into a cell. Also provided are nucleic acid molecules encoding the transmembrane complex, and methods of delivering the target substance into a cell interior by contacting the transmembrane complex with a cell. Also provided are transfection kits containing the PTD and the target substance.

Description

RELATED APPLICATIONS[0001]This application is a continuation of co-pending U.S. application Ser. No. 12 / 280,077, filed Nov. 3, 2008, which is the U.S. National Stage application of PCT / KR2007 / 000885, filed Feb. 20, 2007, entitled “PEPTIDE HAVING CELL MEMBRANE PENETRATING ACTIVITY,” which claims priority to Korean Patent Application No. 10-2006-0016156 filed Feb. 20, 2006, to Kyunglim Lee, Moonhee Kim and Miyoung Kim. The subject matter of each of the above-mentioned applications is incorporated by reference in its entirety.TECHNICAL FIELD[0002]The present invention relates to a peptide having cell membrane penetrating activity, a transmembrane carrier comprising the peptide having cell membrane penetrating activity as an effective component, a transmembrane complex consisting of the peptide having cell membrane penetrating activity combined with a target substance, a transfection kit comprising the peptide having cell membrane penetrating activity and the target substance, use of th...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(United States)
IPC IPC(8): C07K14/435C07K16/18
CPCC07K7/06C07K14/47C07K7/08C07K16/18C07K14/435A61K47/65A61K47/64A61P43/00C07K7/00A61K48/0008C07K14/46
Inventor LEE, KYUNGLIM
Owner EWHA UNIV IND COLLABORATION FOUND
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com