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Cell membrane directed drugs

a technology of cell membrane and drug, applied in the direction of factor vii, thrombomodulin, pharmaceutical non-active ingredients, etc., can solve the problems of increasing the use of these substances must sometimes be limited, and the side effects of the patient are sometimes serious problems, so as to achieve satisfactory effect, increase the economic burden on the patient, and high activity

Inactive Publication Date: 2003-11-27
MOCHIDA PHARM CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For example, heparin and antithrombin III are used as anticoagulants but the use of these substances must occasionally be limited since they have side effects such as the tendency to cause bleeding.
When administering drugs, it is generally required to administer more than a certain dose in order to attain a specified efficacy and side effects to the patient are sometimes a serious problem.
In addition, it is by no means rare that administering high doses of drugs will eventually often increase the economic burden on the part of the patient.

Method used

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  • Cell membrane directed drugs
  • Cell membrane directed drugs
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Examples

Experimental program
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example 2

[0111] Cloning of Human TM cDNA and Preparation of Human TM Expressing Plasmids

[0112] Total RNA was isolated from about 20 g of human placenta by a guanidium isothiocyanate method. A portion (10 mg) of the resulting RNA was passed twice through a oligo(dT)-cellulose column (type 7, product of Pharmacia) to recover about 90 .mu.g of poly(A).sup.+ RNA. Then, using the resulting poly(A).sup.+ RNA as a starting material, single-stranded cDNA was synthesized. Briefly, single-stranded cDNA was synthesized by means of a reverse transcriptase using 10 .mu.g of the poly(A).sup.+ RNA as a template and an oligo(dT) as a primer in the usual manner.

[0113] In a separate step, by referring to a known sequence of human TM DNA [K. Suzuki et al., EMBO J., Vol. 6, 1891 (1987) and R. W. Jackman et al., Proc. Natl. Acad. Sci. USA, Vol. 84, 6425 (1987)], six DNA primers (S1-S3 and A1-A3; see FIGS. 1 and 2), each corresponding to a portion of the DNA sequence of the human TM gene and containing a suitable...

example 3

[0118] Preparation of Plasmids Expressing Soluble Human TM Having Affinity for Phosphatidylserine

[0119] (1) Preparing pM1350

[0120] Four species of single-stranded DNA (F1-F4; see FIG. 4) were synthesized with a chemical synthesizer (supra) and F1 and F2 were annealed in the usual manner and so were F3 and F4, thereby yielding DNA fragment A which was ca. 30 bp in length and which had a BsmI cleaved surface at 5' end and an EcoRI cleaved surface at 3' end, as well as DNA fragment B which was ca. 90 bp in length and which had an NspV cleaved surface at 5' end and an EcoRI cleaved surface at 3' end. Then, the pUC118-TM prepared in Example 2 was digested with restriction enzymes BsmI and EcoRI and subjected to agarose gel electrophoresis, thereby separating and recovering a DNA fragment of ca. 4.6 kbp. This DNA fragment was ligated with fragment A in the usual manner to yield pUC118-TM sub1. Subsequently, the pUC118-TM sub1 was digested with restriction enzymes MluI and EcoRI and subjec...

example 4

[0137] Preparing Unmodified Soluble TM Expressing plasmid

[0138] Two species of single-stranded DNA (F11 and F12; see FIG. 5) were synthesized with a chemical synthesizer (supra) and both were annealed in the usual manner to yield DNA fragment F ca. 20 bp in length which had a BsmI cleaved surface at 5' end and an EcoRI cleaved surface at 3' end. Then, the pUC118-TM prepared in Example 2 was digested with restriction enzymes BsmI and EcoRI and subjected to agarose gel electrophoresis, thereby separating and recovering a DNA fragment of ca. 4.6 kbp. This fragment was ligated with fragment F in the usual manner to yield pUC118-sTM. Subsequently, the pUC118-sTM was digested with restriction enzymes MluI and EcoRI and subjected to agarose gel electrophoresis, thereby separating and recovering a DNA fragment of ca. 0.8 kbp. In a separate step, the pSR.alpha.-TM prepared in Example 2 was digested with restriction enzymes MluI and EcoRI and subjected to agarose gel electrophoresis, thereby ...

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Abstract

Drugs in which peptides having affinity specific for phospholipids, preferably those which are contained in the constituents of lipid bilayers forming the surface layers of cells and of which the proportion in the outer part of each lipid bilayer increases when the cell is not normal, for example, in the case where it is damaged, denatured or activated, and biologically active substances bind to each other, deoxyribonucleic acid (DNA) which codes for the amino acid sequence of the drug in the case where the biologically active substance is a peptide, and processes for producing such drugs. The drugs and novel peptides are useful as preventives and therapeutics of diseases involving coagulopathy, inflammations and immune response.

Description

[0001] This invention relates to drugs in which peptides having affinity specific for phospholipids, preferably those which are contained in the constituents of lipid bilayers forming the surface layers of cells and of which the proportion in the outer part of each lipid bilayer increases when the cell is not normal, for example, in the case where it is damaged, denatured or activated, and biologically active substances bind to each other, deoxyribonucleic acid (DNA) which codes for the amino acid sequence of the drug in the case where the biologically active substance is a peptide, and processes for producing such drugs.[0002] The invention also relates to a novel peptide having affinity specific for a phospholipid, preferably one which is contained in the constituents of lipid bilayers forming the surface layers of cells and of which the proportion in the outer part of each lipid bilayer increases when the cell is not normal, for example, in the case where it is damaged, denatured...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): A61K38/00A61K47/48C07K14/705C07K14/745C07K14/755C07K14/81C12N9/64C12N15/12C12P21/02
CPCA61K38/00A61K47/48276C07K14/70596C07K14/7455C07K14/755C12Y304/21069C07K2319/00C12N9/6464C12N9/647C12P21/02C07K14/8114A61K47/6425
Inventor KURIYAMA, SHINICHIHASEGAWA, TAKASHI
Owner MOCHIDA PHARM CO LTD
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