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Delivery system using MAB 3E10 and mutants and/or functional fragments thereof

a delivery system and mab 3e10 technology, applied in the direction of peptide/protein ingredients, immunoglobulins, peptides, etc., can solve problems such as foreign proteins

Inactive Publication Date: 2016-11-22
RGT UNIV OF CALIFORNIA +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The invention provides methods for transporting a biologically active molecule into the nucleus of a target cell in vitro and in vivo. This is accomplished by combining the active molecule with a specific antibody that binds to a nuclear isoform of myosin heavy chain IIb, which is found in skeletal muscle cells. This results in the active molecule being selectively transported into these cells. The invention also provides vectors for selectively delivering active molecules and antibodies that specifically target the nuclear isoform of myosin heavy chain IIb. The use of these methods allows for more targeted and effective delivery of biologically active molecules to desired cell types.

Problems solved by technology

The potential disadvantage of these vectors is that they are foreign proteins that may be immunogenic in humans.

Method used

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  • Delivery system using MAB 3E10 and mutants and/or functional fragments thereof
  • Delivery system using MAB 3E10 and mutants and/or functional fragments thereof
  • Delivery system using MAB 3E10 and mutants and/or functional fragments thereof

Examples

Experimental program
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Effect test

example 1

Monoclonal Antibodies

[0065]mAbs 3E10, 5C6, and 4H2 are IgG2a anti-dsDNA antibodies which were produced from spleen cells of MRL-mpj / lpr mice by fusion with cells from the FOX-NY cell line as previously described (see Weisbart, et al., in J. Immunol. 144:2653 (1990)). mAb PP102 (Chemicon International, Temecula, Calif.), a murine IgG2a antibody that does not bind DNA, was used as a non-anti-DNA antibody isotype-matched control.

example 2

Monoclonal anti-DNA Antibody Binding in Vitro to Tissues of Human Organs

[0066]The monoclonal antibodies were purified from ascites by affinity chromatography using protein A-Sepharose and tested for binding kidney. mAb 3E10 was also tested for the ability to bind tissues from 19 other human organs, including blood vessels, nerve trunks, liver, connective tissues, lung, pancreas, gut, cardiac muscle, striated muscle, spleen, ovary, testis, thyroid, skin, eye, adrenal, brain, pituitary, and bone. Binding of monoclonal antibodies was detected with peroxidase conjugated affinity purified rabbit antibodies specific for mouse IgG Fc as previously described (see Taylor and Lote in Immunomicroscopy: A diagnostic tool for the surgical pathologist. Saunders, W. B., Philadelphia (1994)).

mAb 3E10 Binds Human Renal Tubular Cells in Vitro

[0067]Three anti-dsDNA antibodies, i.e., mAbs 3E10, 5C6, and 4H2, were studied in vitro for binding tissue from fixed normal human kidney. All of the antibodies ...

example 3

Monoclonal anti-DNA Antibody Binding in Vivo to Tissues of Normal BALB / c Mice

[0071]Normal BALB / c mice were primed with pristane and injected intraperitoneally with 2×107 hybridoma cells. After two weeks, the animals developed ascites containing antibodies with anti-dsDNA reactivity. Heart, liver, and kidney tissues were obtained and preserved in liquid nitrogen for studies of tissue histology. Binding of the anti-DNA antibodies to tissues was detected with peroxidase-conjugated affinity-purified rabbit antibodies specific for mouse IgG Fe as previously described (see Taylor and Lote supra).

mAb 3E10 Binds Murine Renal Tubular Cells in Vivo

[0072]Thus, to determine if mAb 3E10 was reactive with mouse renal tubular cells in vivo, kidneys were examined from normal BALB / c mice two weeks after intraperitoneal injection with 3E10 cells to establish ascites containing high concentrations of mAb 3E10. mAb 3E10 did not localize in the membrane, cytoplasm, or nuclei of liver, cardiac muscle, or...

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Abstract

A monoclonal antibody, 3E10, and active fragments thereof that selectively are transported in vivo to the nucleus of mammalian cells without cytotoxic effect are provided. The antibody and other molecules that bind to a variant of myosin IIb heavy chain found in the nucleus of skeletal muscle cells are useful as a non-viral delivery vector to target skeletal muscle in vivo. By contrast, in vitro the monoclonal antibody penetrates and is transported to the nucleus of multiple cell lines derived from different tissue types and can be used in screening tests to identify molecules that modulate growth of cells, such as cancer cells. Non-cytotoxic vectors for delivering a drug, polynucleotide or polypeptide selectively to skeletal muscle cells are also provided.

Description

[0001]This application is a Continuation-in-Part Application of U.S. application Ser. No. 09 / 142,142, filed Nov. 9, 1998 now abandoned; which was the National Stage of International Application No. PCT / US97 / 03785 under 37 CFR § 371, filed Mar. 7, 1997 and relies for priority upon U.S. Provisional Application Ser. No. 60 / 013,297, filed Mar. 8, 1996.[0002]This invention was made with Government support from the Department of Veterans Affairs. The Government has certain rights in this application.FIELD OF THE INVENTION[0003]The present invention relates to methods for the delivery of biologically active materials into cells, and compositions useful therefor.BACKGROUND OF THE INVENTION[0004]Autoantibodies to double stranded deoxyribose nucleic acid (dsDNA) are relatively specific for systemic lupus erythematosus (SLE) and are implicated in disease pathogenesis. Certain anti-DNA autoantibodies have been shown to penetrate cells and localize to the cell nucleus. Cellular penetration by an...

Claims

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Application Information

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Patent Type & Authority Patents(United States)
IPC IPC(8): A61K39/395C07K16/18C07K16/44A61K38/00A61K47/42A61K45/00A61K47/48C07K16/28
CPCA61K38/00C07K16/18C07K16/28C07K2317/77C07K16/44C07K2317/565C07K2317/622C07K2317/82A61K47/68A61K47/6849
Inventor WEISBART, RICHARD
Owner RGT UNIV OF CALIFORNIA
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