PMID- 6777600 OWN - NLM STAT- MEDLINE DCOM- 19810226 LR - 20190829 IS - 0141-8955 (Print) IS - 0141-8955 (Linking) VI - 3 IP - 2 DP - 1980 TI - Argininosuccinic acid synthetase deficiency in a hamster cell line and its complementation of argininosuccinic aciduria human fibroblasts. PG - 45-8 AB - Unlike normal human cells, cultured fibroblasts from patients with argininosuccinic aciduria cannot synthesize arginine from citrulline because they have a deficiency of argininosuccinic acid lyase (ASL). We have found that V79, a Chinese hamster cell line, cannot grow on citrulline. Although these cells show a normal uptake of citrulline and have levels of ASL comparable to a human cell line (HeLa) which can grow in citrulline-containing medium, V79 cells have less than 5% of the argininosuccinic acid synthetase (ASS) activity of HeLa and cannot convert citrulline to argininosuccinate and thence to arginine. When heterokaryocytes are formed between V79 and a human cell line derived from a patient with ASL deficiency, complementation takes place and citrulline is incorporated into cell protein, presumably after having been converted to arginine. This is the first time that a genetic defect of the urea cycle has been corrected in human cells. FAU - Gonzalez-Noriega, A AU - Gonzalez-Noriega A FAU - Verduzco, J AU - Verduzco J FAU - Prieto, E AU - Prieto E FAU - Velazquez, A AU - Velazquez A LA - eng PT - Journal Article PL - United States TA - J Inherit Metab Dis JT - Journal of inherited metabolic disease JID - 7910918 RN - 2387-71-5 (Argininosuccinic Acid) RN - 29VT07BGDA (Citrulline) RN - 94ZLA3W45F (Arginine) RN - EC 4.- (Lyases) RN - EC 4.3.2.1 (Argininosuccinate Lyase) RN - EC 6.- (Ligases) RN - EC 6.3.4.5 (Argininosuccinate Synthase) SB - IM MH - Animals MH - Arginine/*analogs & derivatives MH - Argininosuccinate Lyase/genetics/*metabolism MH - Argininosuccinate Synthase/*deficiency/genetics MH - Argininosuccinic Acid/*urine MH - Cell Line MH - Citrulline/metabolism MH - Cricetinae MH - Female MH - Fibroblasts/enzymology MH - Genes, Recessive MH - Genetic Complementation Test MH - HeLa Cells MH - Humans MH - Hybrid Cells MH - Ligases/*deficiency MH - Liver/enzymology MH - Lyases/*metabolism MH - Male MH - Renal Aminoacidurias/*metabolism EDAT- 1980/01/01 00:00 MHDA- 1980/01/01 00:01 CRDT- 1980/01/01 00:00 PHST- 1980/01/01 00:00 [pubmed] PHST- 1980/01/01 00:01 [medline] PHST- 1980/01/01 00:00 [entrez] AID - 10.1007/BF02312521 [doi] PST - ppublish SO - J Inherit Metab Dis. 1980;3(2):45-8. doi: 10.1007/BF02312521.