Gene therapy DNA vector based on gene therapy DNA vector VTvaf17 carrying the therapeutic gene selected from the group of COL1A1, COL1A2, P4HA1, P4HA2, COL7A1, CLCA2, ELN, and PLOD1 genes for increasing the expression level of these therapeutic genes, method of its production and use, Escherichia coli strain SCS110-AF/VTvaf17-COL1A1, or Escherichia coli strain SCS110-AF/VTvaf17-COL1A2, or Escherichia coli strain SCS110-AF/VTvaf17-P4HA1, or Escherichia coli strain SCS110-AF/VTvaf17-P4HA2, or Esch

A gene therapy DNA vector based on the VTvaf17 gene therapy DNA vector carrying a target gene selected from the group of genes COL1A1, COL1A2, P4HA1, P4HA2, COL7A1, CLCA2, ELN, PLOD1 to increase the expression level of this target gene in humans and animals. Moreover, the gene therapy DNA vector VTvaf17-COL1A1 or VTvaf17-COL1A2 or VTvaf17-P4HA1 or VTvaf17-P4HA2 or VTvaf17-COL7A1 or VTvaf17-CLCA2 or VTvaf17-ELN or VTvaf17-PLOD1 has the nucleotide sequence SEQ ID NO. SEQ ID No. 3 or SEQ ID No. 4 or SEQ ID No. 5 or SEQ ID No. 6 or SEQ ID No. 7 or SEQ ID No. 8, respectively. The DNA vector contains no nucleotide sequences of viral origin and no antibiotic resistance genes, providing the possibility of its safe use for genetic therapy in humans and animals.