PMID- 34207482 OWN - NLM STAT- PubMed-not-MEDLINE LR - 20210705 IS - 2079-7737 (Print) IS - 2079-7737 (Electronic) IS - 2079-7737 (Linking) VI - 10 IP - 6 DP - 2021 Jun 18 TI - Autophagy a Close Relative of AML Biology. LID - 10.3390/biology10060552 [doi] LID - 552 AB - Autophagy, which literally means "eat yourself", is more than just a lysosomal degradation pathway. It is a well-known regulator of cellular metabolism and a mechanism implicated in tumor initiation/progression and therapeutic resistance in many cancers. However, whether autophagy acts as a tumor suppressor or promoter is still a matter of debate. In acute myeloid leukemia (AML), it is now proven that autophagy supports cell proliferation in vitro and leukemic progression in vivo. Mitophagy, the specific degradation of mitochondria through autophagy, was recently shown to be required for leukemic stem cell functions and survival, highlighting the prominent role of this selective autophagy in leukemia initiation and progression. Moreover, autophagy in AML sustains fatty acid oxidation through lipophagy to support mitochondrial oxidative phosphorylation (OxPHOS), a hallmark of chemotherapy-resistant cells. Nevertheless, in the context of therapy, in AML, as well as in other cancers, autophagy could be either cytoprotective or cytotoxic, depending on the drugs used. This review summarizes the recent findings that mechanistically show how autophagy favors leukemic transformation of normal hematopoietic stem cells, as well as AML progression and also recapitulates its ambivalent role in resistance to chemotherapies and targeted therapies. FAU - Joffre, Carine AU - Joffre C AUID- ORCID: 0000-0002-7551-356X AD - Centre de Recherches en Cancerologie de Toulouse (CRCT), Universite de Toulouse, Inserm, CNRS, 31037 Toulouse, France. FAU - Ducau, Charlotte AU - Ducau C AD - Centre de Recherches en Cancerologie de Toulouse (CRCT), Universite de Toulouse, Inserm, CNRS, 31037 Toulouse, France. FAU - Poillet-Perez, Laura AU - Poillet-Perez L AD - Centre de Recherches en Cancerologie de Toulouse (CRCT), Universite de Toulouse, Inserm, CNRS, 31037 Toulouse, France. FAU - Courdy, Charly AU - Courdy C AD - Centre de Recherches en Cancerologie de Toulouse (CRCT), Universite de Toulouse, Inserm, CNRS, 31037 Toulouse, France. FAU - Mansat-De Mas, Veronique AU - Mansat-De Mas V AUID- ORCID: 0000-0003-1878-9129 AD - Centre de Recherches en Cancerologie de Toulouse (CRCT), Universite de Toulouse, Inserm, CNRS, 31037 Toulouse, France. AD - Centre Hospitalo-Universitaire (CHU) de Toulouse, Institut Universitaire du Cancer de Toulouse-Oncopole (IUCT-O), 31059 Toulouse, France. LA - eng PT - Journal Article PT - Review DEP - 20210618 PL - Switzerland TA - Biology (Basel) JT - Biology JID - 101587988 PMC - PMC8235674 OTO - NOTNLM OT - AML OT - autophagy OT - hematopoiesis OT - mitophagy OT - therapy COIS- The authors declare no conflict of interest. EDAT- 2021/07/03 06:00 MHDA- 2021/07/03 06:01 PMCR- 2021/06/18 CRDT- 2021/07/02 01:31 PHST- 2021/05/11 00:00 [received] PHST- 2021/06/10 00:00 [revised] PHST- 2021/06/18 00:00 [accepted] PHST- 2021/07/02 01:31 [entrez] PHST- 2021/07/03 06:00 [pubmed] PHST- 2021/07/03 06:01 [medline] PHST- 2021/06/18 00:00 [pmc-release] AID - biology10060552 [pii] AID - biology-10-00552 [pii] AID - 10.3390/biology10060552 [doi] PST - epublish SO - Biology (Basel). 2021 Jun 18;10(6):552. doi: 10.3390/biology10060552.