摘要:
Analogs of ShK toxin and methods for using such ShK analogs. The ShK analogs generally comprise ShK toxin attached to a chemical entity (e.g. an atom, molecule, group, residue, compound, moiety, etc.) that has an anionic charge. In some embodiments the chemical entity attached to the ShK toxin may comprise an amino acid residue. The ShK analogs may be administered to human or non-human animal subjects to cause inhibition of potassium channels or to otherwise treat diseases or disorders. In some embodiments, the chemical entity to which the ShK toxin is attached may be chosen to provide selective inhibition of certain potassium channels (e.g., Kv1.3 channels) over other potassium channels (e.g., Kv1.1 channels). In come embodiments, the chemical entity to which the ShK toxin is attached may include a fluorophore, thereby providing a fluorophore tagged ShK analog. Such fluorophore tagged ShK analogs may be used in flow cytometry alone, or in conjunction with class II tetramers that can detect autoreactive cells.
摘要:
The present invention relates to conjugates of a drug and an amino acid or an amino acid derivative or analog, pharmaceutical compositions that include the conjugates and methods of use thereof. In particular, the present invention relates to conjugates of anti-proliferative drugs and asparagine and glutamine and analogs thereof as compositions for treatment of cancer, and conjugates of imaging agent carriers and amino acids for the diagnosis of tumors and metastases.
摘要:
The present invention relates to conjugates of a drug and an amino acid or an amino acid derivative or analog, pharmaceutical compositions that include the conjugates and methods of use thereof. In particular, the present invention relates to conjugates of anti-proliferative drugs and asparagine and glutamine and analogs thereof as compositions for treatment of cancer, and conjugates of imaging agent carriers and amino acids for the diagnosis of tumors and metastases.
摘要:
The present invention relates to conjugates of a drug and an amino acid or an amino acid derivative or analog, pharmaceutical compositions that include the conjugates and methods of use thereof. In particular, the present invention relates to conjugates of anti-proliferative drugs and asparagine and glutamine and analogs thereof as compositions for treatment of cancer, and conjugates of imaging agent carriers and amino acids for the diagnosis of tumors and metastases.
摘要:
Organic compounds containing at least one hydrophilic group are rendered soluble in fatty systems by the formation of a chemical complex with a carrier selected among fatty acid esters of polyhydric hydroxyalkanes having general formula (I) ##STR1## wherein R.sub.1 is H or --CH.sub.2 OR.sub.5, R.sub.2 is H or --CH.sub.2 OR.sub.6, and each of R.sub.3, R.sub.4, R.sub.5 and R.sub.6 is independently a saturated or unsaturated fatty acid moiety having 1-30 carbon atoms or a saturated fatty acid moiety having 1-3 carbon atoms, with the proviso that at least one of R.sub.3, R.sub.4, R.sub.5 and R.sub.6 is a saturated or unsaturated fatty acid moiety having 1-30 carbon atoms, R2 and at least one or, when any of R.sub.1 and R.sub.2 is not H, at least two of R.sub.3, R.sub.4, R.sub.5 and R.sub.6 is a saturated fatty acid moiety having 1-3 carbon atoms. Diacetates of common monoglycerides are especilally preferred as the carriers for forming such complexes. The complexes are applicable for the incorporation of compounds containing hydrophilic groups into e.g. pharmaceuticals, cosmetics, foodstuffs and feeds, diet supplements and natural medicines as well as technochemical compositions.
摘要:
The present invention is directed to vaccines comprising (1) one or more bacterial, viral or tumor-associated antigens; and (2) one or more saponin-lipophile conjugate in which a lipophilic moiety such as a lipid, fatty acid, polyethylene glycol or terpene is covalently attached to a non-acylated or desacylated triterpene saponin via a carboxyl group present on the 3-O-glucuronic acid of the triterpene saponin. The attachment of a lipophile moiety to the 3-O-glucuronic acid of a saponin such as Quillaja desacylsaponin, lucyoside P, or saponin from Gypsophila, Saponaria and Acanthophyllum enhances their adjuvant effects on humoral and cell mediated immunity. Additionally, the attachment of a lipophile moiety to the 3-O-glucuronic acid residue of non- or des-acylsaponin yields a saponin analog that is easier to purify, less toxic, chemically more stable, and possesses equal or better adjuvant properties than the original saponin.
摘要:
Novel cationic amphiphiles are provided that facilitate transport of biologically active (therapeutic) molecules into cells. The amphiphiles contain lipophilic groups derived from steroids, from mono or dialkylamines, or from alkyl or acyl groups; and cationic groups, protonatable at physiological pH, derived from amines, alkylamines or polyalkylamines. There are provided also therapeutic compositions prepared typically by contacting a dispersion of one or more cationic amphiphiles with the therapeutic molecules. Therapeutic molecules that can be delivered into cells according to the practice of the invention include DNA, RNA, and polypeptides. Representative uses of the therapeutic compositions of the invention include providing gene therapy, and delivery of antisense polynucleotides or biologically active polypeptides to cells. With respect to therapeutic compositions for gene therapy, the DNA is provided typically in the form of a plasmid for complexing with the cationic amphiphile. Novel and highly effective plasmid constructs are also disclosed, including those that are particularly effective at providing gene therapy for clinical conditions complicated by inflammation. Additionally, targeting of organs for gene therapy by intravenous administration of therapeutic compositions is described.
摘要:
The present invention describes site-specific biomolecular complexes comprising a therapeutic, prophylactic and diagnostic agent, called also biologically active molecule and an omega-3 fatty acid and derivatives thereof. The complexes are further covalently bonded with cationic carriers and permeabilizer peptides for delivery across the blood-brain barrier and with targeting moieties for uptake by target brain cells. Said complexes are particularly useful for delivery of a biologically active agent to the glial tissue of the brain as well as to the cortical, cholinergic and adrenergic neurons. The preferred therapeutic complexes or conjugates comprise an omega-3 fatty acid such as alpha-linolenic acid, eicosapentaenoic acid or docosahexaenoic acid and derivatives thereof.
摘要:
The present invention is directed to novel chemical compounds in which a lipophilic moiety such as a lipid, fatty acid, polyethylene glycol or terpene is covalently attached to a non-acylated or desacylated triterpene saponin via a carboxyl group present on the 3-O-glucuronic acid of the triterpene saponin. The attachment of a lipophile moiety to the 3-O-glucuronic acid of a saponin such as Quillaja desacylsaponin, lucyoside P, or saponin from Gypsophila, Saponaria and Acanthophyllum enhances their adjuvant effects on humoral and cell mediated immunity. Additionally, the attachment of a lipophile moiety to the 3-O-glucuronic acid residue of non- or des-acylsaponin yields a saponin analog that is easier to purify, less toxic, chemically more stable, and possesses equal or better adjuvant properties than the original saponin.
摘要:
A methotrexate conjugated to 1-3 acyl groups derived from fatty acids. In particular the invention relates to altering the pharmacokinetic profile and mode of delivery of methotrexate by conjugating it to 1.2 or 3 acyl derivatives of fatty acids.