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Compositions for biological systems and methods for preparing and using the same

  • US 10,363,271 B2
  • Filed: 05/24/2018
  • Issued: 07/30/2019
  • Est. Priority Date: 06/13/2016
  • Status: Expired due to Fees
First Claim
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1. A method of making a composition for influencing biological growth configured for implantation within a subject, the method comprising:

  • (A) obtaining a sample comprising human umbilical cord blood and having a first volume VUC, wherein the human umbilical cord blood includes red blood cells, cells other than red blood cells, and non-cellular material;

    (B) combining the sample comprising human umbilical cord blood with a quantity of an aggregation agent or sedimentation agent having a volume VPC, wherein the ratio VUC/VPC is between about 0.60 and about 1.75 such that a supernatant is formed;

    (C) layering within a container at least a portion of the supernatant over a layer of an isolation reagent, the at least a portion of the supernatant having a volume VS and the layer of the isolation reagent having a volume VR, wherein the volume of the layer of the isolation reagent VR is at least 67% the volume VS of the at least a portion of the supernatant;

    (D) placing at least about 350 times the acceleration due to gravity on the contents of the container with a force vector directed toward a closed end of the container to safely cause at least a new layer substantially comprising mononuclear cells to form;

    (E) combining at least some of the layer substantially comprising mononuclear cells with lactated Ringer'"'"'s solution or an equivalent balanced or buffered solution to create a mononuclear cell solution;

    (F) determining the total number of live cells NL in at least a portion of the mononuclear cell solution, the at least a portion of the mononuclear solution having a volume VM; and

    (G) adding a volume VDD of Low Molecular Weight Dextran in Dextrose solution to the at least a portion of the mononuclear cell solution, the volume VDD based at least in part on the total number NL of live cells and the anticipated future viability of the live cells.

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