PMID- 33672324 OWN - NLM STAT- MEDLINE DCOM- 20210601 LR - 20240331 IS - 1422-0067 (Electronic) IS - 1422-0067 (Linking) VI - 22 IP - 4 DP - 2021 Feb 23 TI - The Multifaceted Role of CMA in Glioma: Enemy or Ally? LID - 10.3390/ijms22042217 [doi] LID - 2217 AB - Chaperone-mediated autophagy (CMA) is a catabolic pathway fundamental for cell homeostasis, by which specific damaged or non-essential proteins are degraded. CMA activity has three main levels of regulation. The first regulatory level is based on the targetability of specific proteins possessing a KFERQ-like domain, which can be recognized by specific chaperones and delivered to the lysosomes. Target protein unfolding and translocation into the lysosomal lumen constitutes the second level of CMA regulation and is based on the modulation of Lamp2A multimerization. Finally, the activity of some accessory proteins represents the third regulatory level of CMA activity. CMA's role in oncology has not been fully clarified covering both pro-survival and pro-death roles in different contexts. Taking all this into account, it is possible to comprehend the actual complexity of both CMA regulation and the cellular consequences of its activity allowing it to be elected as a modulatory and not only catabolic machinery. In this review, the role covered by CMA in oncology is discussed with a focus on its relevance in glioma. Molecular correlates of CMA importance in glioma responsiveness to treatment are described to identify new early efficacy biomarkers and new therapeutic targets to overcome resistance. FAU - Lo Dico, Alessia AU - Lo Dico A AUID- ORCID: 0000-0002-8627-5050 AD - Department of Pathophysiology and Transplantation, University of Milan, Via F.Cervi 93, Segrate, 20090 Milan, Italy. FAU - Martelli, Cristina AU - Martelli C AUID- ORCID: 0000-0003-0023-9110 AD - Department of Pathophysiology and Transplantation, University of Milan, Via F.Cervi 93, Segrate, 20090 Milan, Italy. FAU - Diceglie, Cecilia AU - Diceglie C AUID- ORCID: 0000-0003-1749-1080 AD - Department of Pathophysiology and Transplantation, University of Milan, Via F.Cervi 93, Segrate, 20090 Milan, Italy. FAU - Ottobrini, Luisa AU - Ottobrini L AUID- ORCID: 0000-0002-5002-6845 AD - Department of Pathophysiology and Transplantation, University of Milan, Via F.Cervi 93, Segrate, 20090 Milan, Italy. AD - Institute of Molecular Bioimaging and Physiology, National Research Council (IBFM-CNR), Via F.Cervi 93, Segrate, 20090 Milan, Italy. LA - eng PT - Journal Article PT - Review DEP - 20210223 PL - Switzerland TA - Int J Mol Sci JT - International journal of molecular sciences JID - 101092791 RN - 0 (Antineoplastic Agents, Alkylating) RN - 0 (Nuclear Proteins) RN - 0 (Proteins) RN - EC 3.1.3.16 (PHLPP1 protein, human) RN - EC 3.1.3.16 (Phosphoprotein Phosphatases) RN - YF1K15M17Y (Temozolomide) SB - IM MH - Antineoplastic Agents, Alkylating/pharmacology MH - *Chaperone-Mediated Autophagy/drug effects/physiology MH - Glioma/*drug therapy/metabolism/*pathology MH - Humans MH - Nuclear Proteins/metabolism MH - Phosphoprotein Phosphatases/metabolism MH - Proteins/metabolism MH - Temozolomide/pharmacology PMC - PMC7926390 OTO - NOTNLM OT - Hypoxia Inducible Factor-1alpha (HIF-1alpha) OT - PHLPP1 OT - Temozolomide (TMZ) OT - autophagy OT - chaperone proteins OT - oxidative stress OT - therapeutic target COIS- The authors declare no conflict of interest. EDAT- 2021/03/07 06:00 MHDA- 2021/06/02 06:00 PMCR- 2021/02/23 CRDT- 2021/03/06 01:13 PHST- 2021/01/30 00:00 [received] PHST- 2021/02/18 00:00 [revised] PHST- 2021/02/20 00:00 [accepted] PHST- 2021/03/06 01:13 [entrez] PHST- 2021/03/07 06:00 [pubmed] PHST- 2021/06/02 06:00 [medline] PHST- 2021/02/23 00:00 [pmc-release] AID - ijms22042217 [pii] AID - ijms-22-02217 [pii] AID - 10.3390/ijms22042217 [doi] PST - epublish SO - Int J Mol Sci. 2021 Feb 23;22(4):2217. doi: 10.3390/ijms22042217.