US 11,992,581 B2
Methods of producing optimized gene-activated materials
Roman Vadimovich Deev, St. Petersburg (RU); Artur Aleksandrovich Isaev, Moscow (RU); Ilya Yadigerovich Bozo, Kuvshinovo (RU); and Vladimir Sergeevich Komlev, Moscow (RU)
Assigned to HISTOGRAFT, LLC, Moscow (RU)
Filed by HISTOGRAFT, LLC, Moscow (RU)
Filed on Apr. 5, 2019, as Appl. No. 16/376,552.
Application 16/376,552 is a continuation of application No. PCT/RU2017/000455, filed on Jun. 27, 2017.
Claims priority of application No. RU2016139396 (RU), filed on Oct. 7, 2016.
Prior Publication US 2019/0224379 A1, Jul. 25, 2019
Int. Cl. A61L 27/54 (2006.01); A61K 48/00 (2006.01); A61L 27/12 (2006.01); A61L 27/18 (2006.01); A61L 27/36 (2006.01); A61L 27/46 (2006.01); C12Q 1/6834 (2018.01)
CPC A61L 27/54 (2013.01) [A61K 48/00 (2013.01); A61L 27/12 (2013.01); A61L 27/18 (2013.01); A61L 27/3608 (2013.01); A61L 27/46 (2013.01); C12Q 1/6834 (2013.01); A61L 2300/414 (2013.01); A61L 2430/02 (2013.01)] 11 Claims
 
1. A gene-activated material comprising (i) a solid scaffold comprising a first portion of a predetermined dose of at least one nucleic acid; and (ii) a surface of the solid scaffold comprising a second portion of the predetermined dose of the at least one nucleic acid physically bound to said surface;
wherein the first and second portion together comprise the predetermined dose;
wherein the solid scaffold incorporating the at least one nucleic acid is produced by admixing in solution the at least one nucleic acid with scaffolding materials to produce a primary complex containing nucleic acids that are chemically-bound to the scaffolding materials and that are not removed by washing in a 0.9% solution of NaCl, and then, without washing, lyophilizing the admixture, thereby producing a gene-activated material containing a first-chemically bound fraction of the nucleic acid that is incorporated into the scaffold, which is not removed by washing in a 0.9% solution of NaCl, and a second unbound fraction of the nucleic acid that can be removed from the solid scaffold by washing in a 0.9% solution of NaCl;
wherein the gene-activated material is produced by admixing the predetermined dose of the at least one nucleic acid with scaffolding materials in the presence of beta tri-calcium phosphate to produce a primary complex containing the first portion of the dose of the at least one nucleic acid; and lyophilizing or drying the solution used to prepare the scaffold, thereby producing said gene-activated material;
wherein the scaffolding materials comprise beta tri-calcium phosphate and a complexing agent; and
wherein the at least one nucleic acid is DNA.