The oncogene AAMDC links PI3K-AKT-mTOR signaling with metabolic reprograming in estrogen receptor-positive breast cancer.
Antineoplastic Agents
/ pharmacology
Breast Neoplasms
/ genetics
Cell Cycle Proteins
/ genetics
Everolimus
/ pharmacology
Female
GTPase-Activating Proteins
/ metabolism
Gene Expression Regulation, Neoplastic
Humans
Imidazoles
/ pharmacology
Nerve Tissue Proteins
/ metabolism
Oncogenes
/ genetics
Phosphatidylinositol 3-Kinases
/ metabolism
Protein Binding
Proto-Oncogene Proteins c-akt
/ metabolism
Quinolines
/ pharmacology
Receptors, Estrogen
/ metabolism
Signal Transduction
/ drug effects
TOR Serine-Threonine Kinases
/ metabolism
Journal
Nature communications
ISSN: 2041-1723
Titre abrégé: Nat Commun
Pays: England
ID NLM: 101528555
Informations de publication
Date de publication:
26 03 2021
26 03 2021
Historique:
received:
31
10
2020
accepted:
25
02
2021
entrez:
27
3
2021
pubmed:
28
3
2021
medline:
13
4
2021
Statut:
epublish
Résumé
Adipogenesis associated Mth938 domain containing (AAMDC) represents an uncharacterized oncogene amplified in aggressive estrogen receptor-positive breast cancers. We uncover that AAMDC regulates the expression of several metabolic enzymes involved in the one-carbon folate and methionine cycles, and lipid metabolism. We show that AAMDC controls PI3K-AKT-mTOR signaling, regulating the translation of ATF4 and MYC and modulating the transcriptional activity of AAMDC-dependent promoters. High AAMDC expression is associated with sensitization to dactolisib and everolimus, and these PI3K-mTOR inhibitors exhibit synergistic interactions with anti-estrogens in IntClust2 models. Ectopic AAMDC expression is sufficient to activate AKT signaling, resulting in estrogen-independent tumor growth. Thus, AAMDC-overexpressing tumors may be sensitive to PI3K-mTORC1 blockers in combination with anti-estrogens. Lastly, we provide evidence that AAMDC can interact with the RabGTPase-activating protein RabGAP1L, and that AAMDC, RabGAP1L, and Rab7a colocalize in endolysosomes. The discovery of the RabGAP1L-AAMDC assembly platform provides insights for the design of selective blockers to target malignancies having the AAMDC amplification.
Identifiants
pubmed: 33772001
doi: 10.1038/s41467-021-22101-7
pii: 10.1038/s41467-021-22101-7
pmc: PMC7998036
doi:
Substances chimiques
AAMDC protein, human
0
Antineoplastic Agents
0
Cell Cycle Proteins
0
GTPase-Activating Proteins
0
Imidazoles
0
Nerve Tissue Proteins
0
Quinolines
0
RABGAP1L protein, human
0
Receptors, Estrogen
0
Everolimus
9HW64Q8G6G
MTOR protein, human
EC 2.7.1.1
Proto-Oncogene Proteins c-akt
EC 2.7.11.1
TOR Serine-Threonine Kinases
EC 2.7.11.1
dactolisib
RUJ6Z9Y0DT
Types de publication
Journal Article
Research Support, N.I.H., Extramural
Research Support, Non-U.S. Gov't
Langues
eng
Sous-ensembles de citation
IM
Pagination
1920Subventions
Organisme : NCI NIH HHS
ID : R01 CA170370
Pays : United States
Organisme : NIDA NIH HHS
ID : R01 DA036906
Pays : United States
Organisme : NIH HHS
ID : S10 OD020025
Pays : United States
Organisme : NIEHS NIH HHS
ID : R01 ES027595
Pays : United States
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