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Pharmaceutical compositions and method for treating rheumathoid arthritis

a technology of rheumatoid arthritis and compositions, applied in the field of pharmaceutical compositions and methods for treating rheumatoid arthritis, can solve the problem of immunogenicity of chronic diseases treated with xenogenic neutralizing antibodies

Inactive Publication Date: 2004-05-06
RAPPAPORT FAMILY INSTITUTE FOR RESEACH IN THE MEDICAL SCIENCES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

A major disadvantage in treating chronic diseases with xenogenic neutralizing antibodies lies in their immunogenicity.

Method used

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  • Pharmaceutical compositions and method for treating rheumathoid arthritis
  • Pharmaceutical compositions and method for treating rheumathoid arthritis
  • Pharmaceutical compositions and method for treating rheumathoid arthritis

Examples

Experimental program
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Effect test

example 1

Results of Experiments Conducted With the Chemokines MIP-1.alpha., MCP-1, MIP-1.beta., and RANTES

[0119] Prevention of AA Using Naked DNA Vaccines:

[0120] Cloned PCR products of the MIP-1.alpha., MCP-1, MIP-1.beta., RANTES C-C chemokines (Youssef et al., 1998) were ligated into a pcDNA3 mammalian expression vector and used as constructs for naked DNA vaccination (FIG. 1a). Lewis rats were exposed to four weekly administrations of various naked DNA vaccines. Control rats were either injected with the pcDNA3 vector alone, or with PBS. Three weeks after the last immunization all rats were immunized with CFA to induce AA. Under working conditions established in the present study, AA manifests a long lasting form of disease that includes an acute phase, peaking around day 20, and a chronic phase that persists for more than 100 days (FIG. 1a). All control (PBS immunized) and pcDNA3 vaccinated rats (10 per group) developed a severe form of disease with a maximal clinical score (day 20) of 11...

example 2

Results of Experiments Conducted With TNF-.alpha.

[0135] Prevention of AA using TNF-.alpha. Naked DNA Vaccine:

[0136] The cloned PCR product of TNF-.alpha. was ligated into a pcDNA3 mammalian expression vector and used as constructs for naked DNA vaccination. Lewis rats were exposed to four weekly administrations of this construct. Control rats were injected with either the .beta.-actin construct, the pcDNA3 vector alone, or with PBS. Three weeks following the last immunization all rats were immunized with CFA to induce AA. Under working conditions established by the present study, AA manifests a long lasting form of disease that includes an acute phase, peaking around day 20, and a chronic phase that persists for more than 100 days (FIGS. 10a-d). All of the control rats which were treated with either PBS, pcDNA3 alone or .beta.-actin pcDNA3 (12 per group) developed a severe form of disease with a maximal clinical score (day 20) of 13.5.+-.1.8, 13.+-.1.52 and 13.+-.1.52 respectively (...

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Abstract

A method of treating rheumatoid arthritis of an individual is disclosed. The method comprises the step of expressing within the individual at least an immunologically recognizable portion of a cytokine from an exogenous polynucleotide encoding the at least a portion of the cytokine, wherein a level of expression of the at least a portion of the cytokine is sufficient to induce the formation of anti-cytokine immunoglobulins which serve for neutralizing or ameliorating the activity of a respective and / or cross reactive endogenous cytokine, to thereby treat rheumatoid arthritis.

Description

FIELD AND BACKGROUND OF THE INVENTION[0001] The present invention relates to pharmaceutical compositions and methods for treating rheumatoid arthritis in an individual. More particularly the present invention relates to DNA vaccination approaches which induce the breakdown of self-tolerance to cytokines and as such inhibit the progression of the disease.[0002] Rheumatoid arthritis (RA) is an inflammatory disorder characterized by infiltration of leukocytes into the synovial tissue (ST) and synovial fluid (SF) of joints (Harris, 1990). Depending on the type of immunization, a single administration of complete Freund's adjuvant (CFA) may result in the development of a local inflammatory process or chronic poly adjuvant induced arthritis (AIA, also termed AA) which histologically and clinically resembles human RA (Holoshitz et al., 1983). In the scientific and medical communities. AIA is considered a reliable animal model for testing drugs and treatments for RA.[0003] In both diseases ...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): A61K39/00
CPCA61K39/0008A61K2039/53A61K2039/5156
Inventor KARIN, NATHAN
Owner RAPPAPORT FAMILY INSTITUTE FOR RESEACH IN THE MEDICAL SCIENCES
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