Purification of biological substances
First Claim
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1. A process for purifying one or more target substances from a source liquid, said process comprising:
- contacting the source liquid with a chromatography resin;
incubating the source liquid with the chromatography resin for a sufficient contact time to allow the resin to bind a desired fraction of one or more target substances;
recirculating the chromatography resin in a cross-flow filter wherein the following steps are performed;
concentrating the chromatography resin and separating contaminants from the chromatography-resin-bound target substance by diafiltration;
eluting the target substance from the chromatography resin; and
separating the target substance from the chromatography resin by diafiltration;
recovering the target substance; and
optionally concentrating the target substance wherein the chromatography resin comprises porous chromatography resin particles that are functionalized with affinity ligands, with the affinity ligands being located on chains extending from the particle surface.
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Abstract
A process and apparatus for purifying one or more target substances from a source liquid, employing one or more cross-flow filter elements, and one or more types of chromatography resins, in combination, to provide purification with advantageous yield, product purity, and cost- and time-efficiency.
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Citations
63 Claims
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1. A process for purifying one or more target substances from a source liquid, said process comprising:
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contacting the source liquid with a chromatography resin;
incubating the source liquid with the chromatography resin for a sufficient contact time to allow the resin to bind a desired fraction of one or more target substances;
recirculating the chromatography resin in a cross-flow filter wherein the following steps are performed;
concentrating the chromatography resin and separating contaminants from the chromatography-resin-bound target substance by diafiltration;
eluting the target substance from the chromatography resin; and
separating the target substance from the chromatography resin by diafiltration;
recovering the target substance; and
optionally concentrating the target substance wherein the chromatography resin comprises porous chromatography resin particles that are functionalized with affinity ligands, with the affinity ligands being located on chains extending from the particle surface. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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17. A process for purifying an immunoglobulin from a source liquid, said process comprising:
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contacting the source liquid with a chromatography resin, wherein the chromatography resin comprises Protein A linked to rigid, non-porous spherical beads;
incubating the source liquid with the chromatography resin for a sufficient contact time to allow the resin to bind a desired fraction of the immunoglobulin;
recirculating the chromatography resin in a cross-flow filter wherein the following steps are performed;
concentrating the chromatography resin and separating contaminants from the chromatography-resin-bound immunoglobulin by diafiltration;
eluting the immunoglobulin from the chromatography resin; and
separating the immunoglobulin from the chromatography resin by diafiltration;
recovering the immunoglobulin; and
optionally concentrating the immunoglobulin wherein the chromatography resin comprises porous chromatography resin particles that are functionalized with affinity ligands, with the affinity ligands being located on chains extending from the particle surface. - View Dependent Claims (18, 19)
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20. A purification apparatus, for separating and concentrating a target substance from a source liquid, said apparatus comprising:
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a first reservoir constructed and arranged for holding a solid-phase chromatography resin material, and for selectively flowing liquid into and out of said first reservoir;
a solid-phase chromatography resin material disposed in said first reservoir;
a first cross-flow filtration module for separating liquids into permeate and retentate streams, provided with means for flowing liquid in and permeate and retentate liquid streams out of said first cross-flow filtration module;
a second reservoir constructed and arranged for capturing and holding the permeate liquid stream, and for selectively flowing liquid into and out of said second reservoir;
a second cross-flow filtration module for concentrating a liquid stream, provided with means for flowing liquid in and permeate and retentate liquid streams out of said second cross-flow filtration module;
a collection vessel constructed and adapted for capturing the concentrated liquid stream from the second cross-flow filtration module; and
conduit, valve and pump means constructed and arranged for;
providing make-up liquids to the first and second reservoirs;
selectively flowing a source liquid to the first reservoir charged with a chromatography resin to form a slurry;
incubating the source liquid with the chromatography resin by recirculating the slurry from the first reservoir to the first cross-flow filtration module and returning both the permeate and retentate liquid streams to the first reservoir;
recirculating the slurry in a cross-flow filter in a flow pathway adapted for;
concentrating the slurry and separating contaminants from the slurry by diafiltration;
eluting the target substance from the chromatography resin; and
separating the target substance from the chromatography resin by diafiltration;
capturing the target substance in a second reservoir;
concentrating the target substance by flowing it through the second cross-flow filtration module; and
recovering the concentrated target substance in the collection vessel wherein the chromatography resin comprises porous chromatography resin particles that are functionalized with affinity ligands, with the affinity ligands being located on chains extending from the particle surface. - View Dependent Claims (21, 22, 23)
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- 24. A method of purification of a liquid containing a target substance, comprising the steps of contacting the liquid with a chromatography resin to bind the target substance thereto, and cross-flow filtering the target substance-bound chromatography resin under elution conditions to recover a filtrate comprising the target substance, wherein the chromatography resin comprises porous chromatography resin particles that are functionalized with affinity ligands, with the affinity ligands being located on chains extending from the particle surface.
- 40. A method of separating a liquid in a separation system comprising a bioreactor, a chromatographic resin reservoir, a first cross-flow filtration module, a second cross-flow filtration module, and a third cross-flow filtration module, said method comprising clarifying the perfusate of the bioreactor in the first cross-flow filtration module to yield a permeate, flowing the permeate to the chromatographic resin reservoir and flowing chromatographic resin and permeate to the second cross-flow filtration module for concentration, diafiltration and elution to yield an eluate, and flowing the eluate to the third cross-flow filtration module for concentration and diafiltration therein, wherein the chromatographic resin comprises porous chromatographic resin particles that are functionalized with affinity ligands, with the affinity ligands being located on chains extending from the particle surface.
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45. A method of purifying at least one target substance from a source liquid containing a bioactive contaminant, comprising the steps of:
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contacting the source liquid with a chromatography resin;
incubating the source liquid with the chromatography resin for a sufficient contact time to bind to the chromatography resin at least one target substance from the source liquid;
recirculating the chromatography resin in a cross-flow filter wherein the following steps are performed;
concentration and diafiltration of the chromatography resin;
elution of the target substance from the chromatography resin; and
separation of the target substance from the chromatography resin by diafiltration;
recovering the target substance; and
optionally concentrating the target substance;
further comprising inactivating the bioactive contaminant during said method wherein the chromatography resin comprises porous chromatography resin particles that are functionalized with affinity ligands, with the affinity ligands being located on chains extending from the particle surface. - View Dependent Claims (46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56)
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57. A process for purifying one or more target substances from a source liquid containing said target substances together with one or more viral species, such process comprising:
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contacting the source liquid with a viral inactivation agent for the one or more viral species;
concentrating the target substance(s) in the source liquid by tangential flow filtration in a tangential flow filter comprising a membrane effective to concentrate at least 90% by weight of the target substance(s) in such filtration;
contacting the source liquid with a chromatography resin;
incubating the source liquid with the chromatography resin for a sufficient contact time to bind a desired fraction of the target substance(s);
recirculating the chromatography resin in a cross-flow filter wherein the following steps are performed;
concentrating the chromatography resin and separating contaminants from the chromatography-resin-bound target substance by diafiltration in a filter comprising a membrane effective to retain the resin and pass species that are not bound to the resin;
eluting the target substance from the chromatography resin by contact with an elution membrane effective to retain the resin and pass the target substance(s);
separating the target substance from the chromatography resin by diafiltration;
recovering the target substance(s); and
optionally concentrating the target substance(s), wherein the chromatography resin comprises porous chromatography resin particles that are functionalized with affinity ligands, with the affinity ligands being located on chains extending from the particle surface.
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58. A process for purifying one or more target substances from a source liquid containing said target substances, such process comprising:
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contacting the source liquid with a chromatography resin;
recirculating the chromatography resin in at least one cross-flow filter wherein the following steps are performed;
concentrating the target substance and chromatography resin in the source liquid by tangential flow filtration;
diafiltering the chromatography resin in a filter comprising a membrane effective to retain the resin and pass species that are not bound to the resin;
eluting the target substance from the chromatography resin by contact with an elution membrane effective to retain the resin and pass the target substance(s);
separating the target substance from the chromatography resin by diafiltration recovering the target substance(s); and
optionally concentrating the target substance(s), wherein the chromatography resin comprises porous chromatography resin particles that are functionalized with affinity ligands, with the affinity ligands being located on chains extending from the particle surface. - View Dependent Claims (59, 60, 62, 63)
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61. A method of manufacturing universal plasma from blood containing serological Group A and/or Group B antibodies, comprising contacting the blood containing serological Group A and/or Group B antibodies with a chromatography resin comprising corresponding Group A and/or Group B antigen, and recovering an antibodies-depleted blood product as the universal plasma, wherein the chromatography resin comprises porous chromatography resin particles that are functionalized with said corresponding Group A and/or Group B antigen, with the corresponding Group A and/or Group B antigen being located on chains extending from the particle surface.
Specification