FIELD: biotechnology, microbiology, genetic engineering.
SUBSTANCE: invention proposes a new recombinant plasmid pR752 (5269 pair bases) comprising genetic construction under control of bacteriophage T5 promoter and encoding a module polypeptide consisting of 6 histidine residues, hemoglobin-like protein of E. coli, modified fragment of large T-antigen SV-40, translocation domain of diphtheria toxin, spacer sequence (Gly-Ser)5 and human epidermal growth factor (6 His-HMP-NLS-Dtox-(Gly-Ser)5-EGF) and designated for the directed transfer of photosensitizers into target-cell nuclei. By transformation of the strain E. coli M15 (rep 4) with plasmid pR752 the recombinant strain E. coli VKPM B-8356 as a producer of new polypeptide vector is prepared. The usage of this new strain is able to enhance the effectiveness of effect of photosensitizers by some orders. Invention can be used in medicinal-biological industry in preparing agents providing the directed transport of photosensitizing agents into tumor cell nuclei.
EFFECT: valuable biological and medicinal properties of polypeptide.
3 dwg, 4 ex
| Title |
Year |
Author |
Number |
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|
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|
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|
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0 |
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SU1780542A3 |
