摘要:
The invention provides improved methods for delivery of nucleic acids to cells, which comprise forming ternary complexes between a hydrophobic, membrane-binding anion such as hypericin; a polycation such as polylysine; and a nucleic acid such as DNA; and contacting cells with the tenary complexes. Also provided are pharmaceutical formulations comprising these ternary complexes and a pharmaceutically acceptable carrier or diluent. The methods and compositions find use in mediating DNA uptake into cells, including gene therapy applications.
摘要:
Vat dyes for dyeing and printing cellulose material have the formula ##STR1## where P=pyranthrone structure, A=1,4-or 1,5-anthraquinonyl, V=a violanthronyl or isoviol-anthronyl radical which may carry up to 2 chlorine or bromine atoms as substitutents, R=hydrogen, the acyl radical of an aliphatic C.sub.1 -C.sub.6 -carboxylic acid or the acyl or sulfonyl radical of an aromatic carboxylic or sulfonic acid, Hal=chlorine or bromine, m=from 0 to 3, n=from 1 to 4, and p=from 0 to 3, with the proviso that the sum m+n+p is not greater than 4.
摘要:
Pigments of the formula I ##STR1## where A is a five- or six-membered aromatic fused or unfused heterocycle which contains one to three hetero atoms from the series consisting of nitrogen and/or oxygen and/or sulfur and which is bonded to the methylene group via a carbon atom, R.sub.1 and R.sub.2 are each hydrogen, alkyl C.sub.1 -C.sub.4, alkylene C.sub.2 or aryl, and together R.sub.1 and R.sub.2 may also be an aliphatic or aromatic ring, R.sub.3 is hydrogen, alkyl C.sub.1 -C.sub.4 hydroxylkyl C.sub.1 -C.sub.3 or alkylene C.sub.2, P is the radical of a polycyclic pigment or a radical of a mix-crystal of polycyclic pigments, and n is a number from 0.0001 to 0.2, are useful for pigmenting high molecular weight materials in the form of plastic materials, melts, spinning solutions, surface coatings, paints, printing inks, baking finishes of the class of the alkyd melamine resin or acrylic melamine resin finishes, two-component coatings based on polyisocyanate-crosslinkable acrylic resins and printing inks based on nitrocellulose.