title: Transplantation of reversibly immortalized insulin-secreting human hepatocytes controls diabetes in pancreatectomized pigs.
abstract: Type 1 diabetes results from the destruction of insulin-producing pancreatic beta-cells by a beta-cell-specific autoimmune process. Although converting other cell types into insulin-producing cells may compensate for the loss of the beta-cell mass while evading beta-cell-specific T-cell responses, proof-of-principle of this approach in large animal models is lacking. This investigation was initiated to determine whether an insulin-producing human hepatocyte line can control diabetes when transplanted into totally pancreatectomized diabetic pigs. We established a reversibly immortalized human hepatocyte line, YOCK-13, by transferring a human telomerase reverse transcriptase cDNA and a drug-inducible Cre recombinase cassette, followed by cDNA for a modified insulin under the control of the L-type pyruvate kinase (L-PK) promoter. YOCK-13 cells produced small amounts of modified insulin and no detectable endogenous L-PK at low glucose concentrations, whereas they produced large amounts of both modified insulin and L-PK in response to high glucose concentrations. Xenotransplantation of YOCK-13 cells via the portal vein into immunosuppressed, totally pancreatectomized pigs decreased hyperglycemia and prolonged survival without adverse effects such as portal thrombosis, liver necrosis, pulmonary embolism, and tumor development. We suggest that this reversibly immortalized, insulin-secreting human hepatocyte line may overcome the shortage of donor pancreata for islet transplantation into patients with type 1 diabetes.
authors.affiliation: Department of Surgery, Okayama University Graduate School of Medicine and Dentistry, Okayama, Japan.
authors.forename: Teru
authors.initials: T
authors.lastname: Okitsu
authors.forename: Naoya
authors.initials: N
authors.lastname: Kobayashi
authors.forename: Hee-Sook
authors.initials: HS
authors.lastname: Jun
authors.forename: Seungjin
authors.initials: S
authors.lastname: Shin
authors.forename: Su-Jin
authors.initials: SJ
authors.lastname: Kim
authors.forename: Jaeseok
authors.initials: J
authors.lastname: Han
authors.forename: Hyokjoon
authors.initials: H
authors.lastname: Kwon
authors.forename: Masakiyo
authors.initials: M
authors.lastname: Sakaguchi
authors.forename: Toshinori
authors.initials: T
authors.lastname: Totsugawa
authors.forename: Michinori
authors.initials: M
authors.lastname: Kohara
authors.forename: Karen A
authors.initials: KA
authors.lastname: Westerman
authors.forename: Noriaki
authors.initials: N
authors.lastname: Tanaka
authors.forename: Philippe
authors.initials: P
authors.lastname: Leboulch
authors.forename: Ji-Won
authors.initials: JW
authors.lastname: Yoon
mesh_terms: D000818:Animals; D002460:Cell Line; D004268:DNA-Binding Proteins; D004195:Disease Models, Animal; D022781:Hepatocytes / Q000378:metabolism / Q000637:transplantation*; D006801:Humans; D006943:Hyperglycemia / Q000517:prevention & control*; D007328:Insulin / Q000378:metabolism*; D000078790:Insulin Secretion; D010180:Pancreatectomy; D011169:Portal Vein; D011401:Promoter Regions, Genetic; D011770:Pyruvate Kinase / Q000235:genetics / Q000378:metabolism; D016019:Survival Analysis; D013552:Swine; D019098:Telomerase / Q000235:genetics / Q000378:metabolism; D014183:Transplantation, Heterologous / Q000502:physiology
chemical_list: D004268:DNA-Binding Proteins; D007328:Insulin; D011770:Pyruvate Kinase; D019098:Telomerase