{"id":330,"date":"2015-01-20T19:06:58","date_gmt":"2015-01-21T03:06:58","guid":{"rendered":"https:\/\/keck.usc.edu\/news\/researchers-grow-functional-intestine-from-human-cells\/"},"modified":"2023-11-26T08:16:25","modified_gmt":"2023-11-26T16:16:25","slug":"researchers-grow-functional-intestine-from-human-cells","status":"publish","type":"post","link":"https:\/\/keck.usc.edu\/news\/researchers-grow-functional-intestine-from-human-cells\/","title":{"rendered":"Researchers grow functional intestine from human cells"},"content":{"rendered":"\n \n \n\n\n\n\n\n\n\n
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\n\n \n Press Release<\/span>\n\n\n\n<\/div>\n \n \n
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Researchers grow functional intestine from human cells<\/h1>\n\n\n<\/div>\n \n \n
\n \n January 20, 2015<\/span>\n <\/div>\n \n \n
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The Grikscheit Lab (Photo by Cristy Lytal)<\/figcaption>\n <\/figure>\n \n \n \n\n<\/div>\n \n\n <\/div><\/div>\n\r\n\r\n\n\n \n \n\n\n\n\n\n\n\n
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A new study by Keck School of Medicine faculty at Children\u2019s Hospital Los Angeles has shown that small intestine grown from human cells replicates key aspects of a functioning human intestine. The small intestine they developed contains important elements of the mucosal lining and support structures, including the ability to absorb sugars, and even tiny or ultra-structural components like cellular connections.
\nPublished online January 8 by the American Journal of Physiology: GI & Liver, the work brings surgeons one step closer to helping human patients using this regenerative medicine technique.
\nTissue-engineered small intestine (TESI) grows from stem cells contained in the intestine and offers a promising treatment for short bowel syndrome (SBS), a major cause of intestinal failure, particularly in premature babies and newborns with congenital intestinal anomalies. TESI may one day offer a therapeutic alternative to the current standard treatment, which is intestinal transplantation, and could potentially solve its largest challenges \u2013 donor shortage and the need for lifelong immunosuppression.
\nTracy C. Grikscheit, MD, a principal investigator in The Saban Research Institute of CHLA and its Developmental Biology and Regenerative Medicine program, is also a pediatric surgeon at Children\u2019s Hospital Los Angeles, an assistant professor of surgery at the Keck School of Medicine of USC and a principal investigator with USC Stem Cell.
\nGrikscheit aims to help her most vulnerable young patients, including premature babies who develop a devastating disease called necrotizing enterocolitis (NEC), where life-threatening intestinal damage requires removal of large portions of the small intestine. Without enough intestinal length, the babies are dependent on intravenous feeding, which is costly and may cause liver damage. NEC and other contributors to intestinal failure occur in 24.5 out of 100,000 live births, and the incidence of SBS is increasing. Nearly a third of patients die within five years.
\nCHLA scientists had previously shown that TESI could be generated from human small intestine donor tissue implanted into immunocompromised mice. However, in those initial studies \u2013 published in July 2011 in the biomedical journal Tissue Engineering, Part A \u2013 only basic components of the intestine were identified. For clinical relevance, it remained necessary to more fully investigate intact components of function, such as the ability to form a healthy barrier while still absorbing nutrition or specific mechanisms of electrolyte exchange.
\nThe new study determined that mouse TESI is highly similar to the TESI derived from human cells, and that both contain important building blocks, such as the stem and progenitor cells that will continue to regenerate the intestine as a living tissue replacement. And these cells are found within the engineered tissue in specific locations and in close proximity to other specialized cells that are known to be necessary in healthy human intestine for a fully functioning organ.
\n\u201cWe have shown that we can grow tissue-engineered small intestine that is more complex than other stem cell or progenitor cell models that are currently used to study intestinal regeneration and disease, and proven it to be fully functional as it develops from human cells,\u201d said Grikscheit. \u201cDemonstrating the functional capacity of this tissue-engineered intestine is a necessary milestone on our path toward one day helping patients with intestinal failure.\u201d
\nAdditional contributors include Christa N. Grant, Garcia Salvador, Frederic Sala, Ryan J. Hill, Daniel E. Levin, Allison L. Speer, Erik R. Barthel, and Hiroyuki Shimada, Children\u2019s Hospital Los Angeles; and Nicholas C. Zachos, Johns Hopkins University School of Medicine. Funding was provided in part by the California Institute for Regenerative Medicine (CIRM) RN200946 AND RN306425 and the National Institutes of Health K01-DK080930 and R03-DK091482.
\nby Children’s Hospital Los Angeles<\/p>\n\n\n\n<\/div>\n <\/div>\n\n\n <\/div><\/div>\n","protected":false},"excerpt":{"rendered":"","protected":false},"author":168,"featured_media":331,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"advgb_blocks_editor_width":"","advgb_blocks_columns_visual_guide":"","footnotes":"","_links_to":"","_links_to_target":""},"categories":[6],"tags":[65,20,436],"class_list":["post-330","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-press-release","tag-department-of-pediatrics","tag-research","tag-usc-stem-cell"],"acf":[],"yoast_head":"\nResearchers grow functional intestine from human cells<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/keck.usc.edu\/news\/researchers-grow-functional-intestine-from-human-cells\/\" 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