PMID- 11779163 OWN - NLM STAT- MEDLINE DCOM- 20020225 LR - 20211203 IS - 0006-291X (Print) IS - 0006-291X (Linking) VI - 290 IP - 1 DP - 2002 Jan 11 TI - 5-amino-4-imidazolecarboxamide riboside confers strong tolerance to glucose starvation in a 5'-AMP-activated protein kinase-dependent fashion. PG - 263-7 AB - Acadesine, 5-amino-4-imidazolecarboxamide riboside (AICAR), has been claimed to protect the heart, lung, and small intestine against ischemic damage. The biochemical mechanisms of this effect of AICAR are not yet fully understood. To understand the mechanism, we examined the effect of AICAR on glucose starvation, since cellular responses to ischemia could be regarded as a protective response to an insufficient blood supply, cells might display adaptive reactions not only to oxygen deficiency but to nutrient deficiency. AICAR was found to confer strong tolerance to glucose starvation. By using antisense RNA expression vector for alpha subunit of 5'-AMP-activated protein kinase, the effect of AICAR was found to be dependent on 5'-AMP-activated protein kinase containing the alpha2 subunit. The AICAR effect was also dependent on the presence of amino acids, indicating an energy source switch from glucose to amino acids. CI - (c)2002 Elsevier Science. FAU - Hashimoto, Koichi AU - Hashimoto K AD - Investigative Treatment Division, National Cancer Center Research Institute East, 6-5-1, Kashiwanoha, Kashiwa, Chiba 277-8577, Japan. FAU - Kato, Kazuyoshi AU - Kato K FAU - Imamura, Kazuhiro AU - Imamura K FAU - Kishimoto, Atsuhiro AU - Kishimoto A FAU - Yoshikawa, Hiroyuki AU - Yoshikawa H FAU - Taketani, Yuuji AU - Taketani Y FAU - Esumi, Hiroyasu AU - Esumi H LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - United States TA - Biochem Biophys Res Commun JT - Biochemical and biophysical research communications JID - 0372516 RN - 0 (DNA-Binding Proteins) RN - 0 (HIF1A protein, human) RN - 0 (Hypoglycemic Agents) RN - 0 (Hypoxia-Inducible Factor 1) RN - 0 (Hypoxia-Inducible Factor 1, alpha Subunit) RN - 0 (Multienzyme Complexes) RN - 0 (Nuclear Proteins) RN - 0 (Oligonucleotides, Antisense) RN - 0 (RNA, Antisense) RN - 0 (Ribonucleotides) RN - 0 (Transcription Factors) RN - 360-97-4 (Aminoimidazole Carboxamide) RN - 63231-63-0 (RNA) RN - 8L70Q75FXE (Adenosine Triphosphate) RN - EC 2.7.11.1 (PRKAA2 protein, human) RN - EC 2.7.11.1 (Protein Serine-Threonine Kinases) RN - EC 2.7.11.31 (AMP-Activated Protein Kinases) RN - F0X88YW0YK (AICA ribonucleotide) RN - IY9XDZ35W2 (Glucose) RN - S88TT14065 (Oxygen) SB - IM MH - AMP-Activated Protein Kinases MH - Adenosine Triphosphate/metabolism MH - Aminoimidazole Carboxamide/*analogs & derivatives/*metabolism MH - Blotting, Northern MH - Cell Line MH - Cell Survival MH - DNA-Binding Proteins/biosynthesis MH - Fibroblasts/metabolism MH - Glucose/*metabolism MH - Humans MH - Hypoglycemic Agents/*pharmacology MH - Hypoxia MH - Hypoxia-Inducible Factor 1 MH - Hypoxia-Inducible Factor 1, alpha Subunit MH - Multienzyme Complexes/*metabolism MH - Nuclear Proteins/biosynthesis MH - Oligonucleotides, Antisense/pharmacology MH - Oxygen/metabolism MH - Protein Serine-Threonine Kinases/*metabolism MH - RNA/metabolism MH - RNA, Antisense/metabolism MH - Ribonucleotides/*metabolism MH - Time Factors MH - *Transcription Factors MH - Tumor Cells, Cultured EDAT- 2002/01/10 10:00 MHDA- 2002/02/28 10:01 CRDT- 2002/01/10 10:00 PHST- 2002/01/10 10:00 [pubmed] PHST- 2002/02/28 10:01 [medline] PHST- 2002/01/10 10:00 [entrez] AID - S0006291X01961935 [pii] AID - 10.1006/bbrc.2001.6193 [doi] PST - ppublish SO - Biochem Biophys Res Commun. 2002 Jan 11;290(1):263-7. doi: 10.1006/bbrc.2001.6193.