PMID- 22564634 OWN - NLM STAT- MEDLINE DCOM- 20120904 LR - 20220321 IS - 1873-2623 (Electronic) IS - 0041-1345 (Linking) VI - 44 IP - 4 DP - 2012 May TI - Hybrid cellular spheroids from hepatocellular carcinoma and insulin-secreting cell lines. PG - 1095-8 LID - 10.1016/j.transproceed.2012.02.016 [doi] AB - During islet transplantation into the portal vein of the liver, the islet cells are expected to have complex interactions with hepatocytes. However, the mechanism underlying this interaction is not yet understood. Hence, we developed cellular complexes containing a mixture of human hepatocellular carcinoma cell line (Hep-G2) and rat insulin-secreting cell line (RIN-5F) by using a co-culture model and studied the function and morphology of the resultant hybrid cellular spheroids (HCSs). The RIN-5F and Hep-G2 cells were suspension cultured and, within 5 days of culture, the two types of cells aggregated to yield spheroids. The functionality of the thus formed HCSs was evaluated by measuring the levels of insulin and albumin in the culture supernatant. The HCSs retained their insulin- and albumin-secreting ability and their morphology, as revealed by immunohistological staining. The insulin and albumin levels secreted by the HCSs were considerably higher than those secreted by spheroids of single-cell origin. Generally, obtaining complexes from more than two types of cells is difficult. However, we were able to generate HCSs. We believe that this culture method could have various applications such as studying the in vitro cell-cell interactions and developing new cell transplantation models. CI - Copyright (c) 2012 Elsevier Inc. All rights reserved. FAU - Kim, J Y AU - Kim JY AD - The Research Institute for Transplantation, Yonsei University Health System, Seoul, Korea. FAU - Kim, H W AU - Kim HW FAU - Bae, S J AU - Bae SJ FAU - Joo, D J AU - Joo DJ FAU - Huh, K H AU - Huh KH FAU - Fang, Y H AU - Fang YH FAU - Cho, Y AU - Cho Y FAU - Jeong, J H AU - Jeong JH FAU - Kim, Y S AU - Kim YS FAU - Lee, J I AU - Lee JI LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - United States TA - Transplant Proc JT - Transplantation proceedings JID - 0243532 RN - 0 (Albumins) RN - 0 (Insulin) SB - IM MH - Albumins/metabolism MH - Animals MH - Apoptosis MH - Carcinoma, Hepatocellular/*metabolism/pathology MH - *Cell Communication MH - Coculture Techniques MH - Hep G2 Cells MH - Humans MH - Insulin/*metabolism MH - Insulin Secretion MH - Insulin-Secreting Cells/*metabolism/pathology MH - Liver Neoplasms/*metabolism/pathology MH - Rats MH - Spheroids, Cellular MH - Time Factors EDAT- 2012/05/09 06:00 MHDA- 2012/09/05 06:00 CRDT- 2012/05/09 06:00 PHST- 2012/05/09 06:00 [entrez] PHST- 2012/05/09 06:00 [pubmed] PHST- 2012/09/05 06:00 [medline] AID - S0041-1345(12)00204-7 [pii] AID - 10.1016/j.transproceed.2012.02.016 [doi] PST - ppublish SO - Transplant Proc. 2012 May;44(4):1095-8. doi: 10.1016/j.transproceed.2012.02.016.