2022
DOI: 10.1158/2159-8290.cd-21-0910
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Targeting S100A9–ALDH1A1–Retinoic Acid Signaling to Suppress Brain Relapse inEGFR-Mutant Lung Cancer

Abstract: The epidermal growth factor receptor (EGFR) tyrosine kinase inhibitor (TKI) osimertinib has significantly prolonged progression-free survival (PFS) in EGFR-mutant lung cancer patients, including those with brain metastases. However, despite striking initial responses, osimertinib-treated patients eventually develop lethal metastatic relapse, often to the brain. Although osimertinib-refractory brain relapse is a major clinical challenge, its underlying mechanisms remain poorly understood. Using metastatic model… Show more

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Cited by 36 publications
(26 citation statements)
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References 61 publications
(75 reference statements)
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“…Our results, together with recent data 52 , suggest that the acquisition of therapeutic resistance in brain metastasis might be linked to the induction of cellular plasticity mechanisms activated by the crosstalk with the microenvironment during colonization. The interface between the microenvironmental influence on cell plasticity and the pre-existing heterogeneity within cancer cells might promote the emergence of specific cellular and functional phenotypes (that is, cancer stem cells) that could be therapeutically relevant.…”
Section: Discussionsupporting
confidence: 73%
See 1 more Smart Citation
“…Our results, together with recent data 52 , suggest that the acquisition of therapeutic resistance in brain metastasis might be linked to the induction of cellular plasticity mechanisms activated by the crosstalk with the microenvironment during colonization. The interface between the microenvironmental influence on cell plasticity and the pre-existing heterogeneity within cancer cells might promote the emergence of specific cellular and functional phenotypes (that is, cancer stem cells) that could be therapeutically relevant.…”
Section: Discussionsupporting
confidence: 73%
“…Cancer-related phenotypes ascribed to S100A9 include its involvement as an inducer of invasion 47 , 48 that has been linked to the premetastatic niche 49 , 50 as well as to chemoresistance driven by the recruitment of myeloid cells to lung metastases 51 or in a cell-autonomous manner 52 . Knockdown of S100A9 in H2030-BrM cells (Supplementary Fig.…”
Section: Resultsmentioning
confidence: 99%
“…S100A9 overexpression in obesity impaired macrophage differentiation via TLR4-NFkB signaling, worsening inflammation and wound healing (Franz et al, 2022). S100A9-ALDH1A1-RA signaling pathway that drives lethal brain relapse and could be targeted by pan-RAR antagonists to prevent cancer progression (Biswas et al, 2022). A microRNA-21-mediated SATB1/S100A9/NF-κB axis has been reported to promote chronic obstructive pulmonary disease pathogenesis (Kim et al, 2021).…”
Section: Discussionmentioning
confidence: 99%
“…High expression of ALDH1 can be achieved by activating the MEK/ERK signaling pathway ( 59 ). S100A9 upregulates ALDH1A1 expression and activates the RA signaling pathway in lung cancer cells ( 60 ). Regulation and expression of ALDH1 in lung cancer are mainly related to TSPYL5 ( 61 ), STAT3 ( 62 ), SOX9 ( 63 ), β-catenin ( 64 ), MiR-34a/IL-629 ( 54 ), miR-326/GNB1 ( 65 ), RNAMACC1-AS143 ( 66 ), PFKFB346 ( 67 ) and other signals and pathways.…”
Section: Aldh1 and Various Solid Tumorsmentioning
confidence: 99%
“…The vitamin A/retinoic acid axis depletes ALDH1 positive CSCs and resensitizes drug resistant lung cancer cells to cisplatin ( 53 ). Targeting the s100A9-ALDH1A1-retinoic acid signaling pathway inhibits brain recurrence in EGFR-mutant lung cancer ( 60 ). Standard drugs for lung cancer treatment, cisplatin/gemcitabine,and menadione, reduced ALDH1 expression ( 68 ), while the elimination of ALDH1A1 significantly increased apoptosis and decreased resistance to cisplatin ( 69 ).…”
Section: Aldh1 and Various Solid Tumorsmentioning
confidence: 99%