title: A scalable system for production of functional pancreatic progenitors from human embryonic stem cells.
abstract: Development of a human embryonic stem cell (hESC)-based therapy for type 1 diabetes will require the translation of proof-of-principle concepts into a scalable, controlled, and regulated cell manufacturing process. We have previously demonstrated that hESC can be directed to differentiate into pancreatic progenitors that mature into functional glucose-responsive, insulin-secreting cells in vivo. In this study we describe hESC expansion and banking methods and a suspension-based differentiation system, which together underpin an integrated scalable manufacturing process for producing pancreatic progenitors. This system has been optimized for the CyT49 cell line. Accordingly, qualified large-scale single-cell master and working cGMP cell banks of CyT49 have been generated to provide a virtually unlimited starting resource for manufacturing. Upon thaw from these banks, we expanded CyT49 for two weeks in an adherent culture format that achieves 50-100 fold expansion per week. Undifferentiated CyT49 were then aggregated into clusters in dynamic rotational suspension culture, followed by differentiation en masse for two weeks with a four-stage protocol. Numerous scaled differentiation runs generated reproducible and defined population compositions highly enriched for pancreatic cell lineages, as shown by examining mRNA expression at each stage of differentiation and flow cytometry of the final population. Islet-like tissue containing glucose-responsive, insulin-secreting cells was generated upon implantation into mice. By four- to five-months post-engraftment, mature neo-pancreatic tissue was sufficient to protect against streptozotocin (STZ)-induced hyperglycemia. In summary, we have developed a tractable manufacturing process for the generation of functional pancreatic progenitors from hESC on a scale amenable to clinical entry.
authors.affiliation: Viacyte, Inc., Athens, Georgia, United States of America. tschulz@viacyte.com
authors.forename: Thomas C
authors.initials: TC
authors.lastname: Schulz
authors.forename: Holly Y
authors.initials: HY
authors.lastname: Young
authors.forename: Alan D
authors.initials: AD
authors.lastname: Agulnick
authors.forename: M Josephine
authors.initials: MJ
authors.lastname: Babin
authors.forename: Emmanuel E
authors.initials: EE
authors.lastname: Baetge
authors.forename: Anne G
authors.initials: AG
authors.lastname: Bang
authors.forename: Anindita
authors.initials: A
authors.lastname: Bhoumik
authors.forename: Igor
authors.initials: I
authors.lastname: Cepa
authors.forename: Rosemary M
authors.initials: RM
authors.lastname: Cesario
authors.forename: Carl
authors.initials: C
authors.lastname: Haakmeester
authors.forename: Kuniko
authors.initials: K
authors.lastname: Kadoya
authors.forename: Jonathan R
authors.initials: JR
authors.lastname: Kelly
authors.forename: Justin
authors.initials: J
authors.lastname: Kerr
authors.forename: Laura A
authors.initials: LA
authors.lastname: Martinson
authors.forename: Amanda B
authors.initials: AB
authors.lastname: McLean
authors.forename: Mark A
authors.initials: MA
authors.lastname: Moorman
authors.forename: Janice K
authors.initials: JK
authors.lastname: Payne
authors.forename: Mike
authors.initials: M
authors.lastname: Richardson
authors.forename: Kelly G
authors.initials: KG
authors.lastname: Ross
authors.forename: Eric S
authors.initials: ES
authors.lastname: Sherrer
authors.forename: Xuehong
authors.initials: X
authors.lastname: Song
authors.forename: Alistair Z
authors.initials: AZ
authors.lastname: Wilson
authors.forename: Eugene P
authors.initials: EP
authors.lastname: Brandon
authors.forename: Chad E
authors.initials: CE
authors.lastname: Green
authors.forename: Evert J
authors.initials: EJ
authors.lastname: Kroon
authors.forename: Olivia G
authors.initials: OG
authors.lastname: Kelly
authors.forename: Kevin A
authors.initials: KA
authors.lastname: D'Amour
authors.forename: Allan J
authors.initials: AJ
authors.lastname: Robins
mesh_terms: D000704:Analysis of Variance; D000818:Animals; D061249:Batch Cell Culture Techniques / Q000379:methods*; D002454:Cell Differentiation / Q000502:physiology*; D015925:Cryopreservation / Q000379:methods; D003922:Diabetes Mellitus, Type 1 / Q000628:therapy*; D053595:Embryonic Stem Cells / Q000166:cytology* / Q000502:physiology / Q000637:transplantation*; D005434:Flow Cytometry; D005455:Fluorescent Antibody Technique; D020869:Gene Expression Profiling; D006801:Humans; D050417:Insulin-Secreting Cells / Q000166:cytology*; D008297:Male; D051379:Mice; D016513:Mice, SCID; D013311:Streptozocin
chemical_list: D013311:Streptozocin