Results 1 to 10 of about 2,343,487 (194)

Epigenetic silencing of SALL2 confers tamoxifen resistance in breast cancer

open access: yesEMBO Molecular Medicine, 2019
Resistance to tamoxifen is a clinically major challenge in breast cancer treatment. Although downregulation of estrogen receptor‐alpha (ERα) is the dominant mechanism of tamoxifen resistance, the reason for ERα decrease during tamoxifen therapy remains ...
Liping Ye   +18 more
doaj   +3 more sources

CXCR4 Antagonist AMD3100 Reverses the Resistance to Tamoxifen in Breast Cancer via Inhibiting AKT Phosphorylation

open access: yesMolecular Therapy: Oncolytics, 2020
Endocrine therapy is a systemic therapy and has become the main treatment strategy for patients with estrogen receptor (ER)-positive breast cancer.
Jun Zhou   +9 more
doaj   +3 more sources

NR4A1 Regulates Tamoxifen Resistance by Suppressing ERK Signaling in ER-Positive Breast Cancer

open access: yesCells, 2021
Endocrine therapy is used to treat estrogen receptor (ER)-positive breast cancer. Tamoxifen is effective against this cancer subtype. Nonetheless, approximately 30% of patients treated with tamoxifen acquire resistance, resulting in therapeutic ...
Yu Cheon Kim   +3 more
doaj   +2 more sources

miR-449a Suppresses Tamoxifen Resistance in Human Breast Cancer Cells by Targeting ADAM22 [PDF]

open access: yesCellular Physiology and Biochemistry, 2018
Background/Aims: Most of estrogen receptor positive breast cancer patients respond well initially to endocrine therapies, but often develop resistance during treatment with selective estrogen receptor modulators (SERMs) such as tamoxifen.
Jun Li   +5 more
doaj   +2 more sources

MIR497HG‐Derived miR‐195 and miR‐497 Mediate Tamoxifen Resistance via PI3K/AKT Signaling in Breast Cancer

open access: yesAdvanced Science, 2023
Tamoxifen is commonly used for the treatment of patients with estrogen receptor‐positive (ER+) breast cancer, but the acquired resistance to tamoxifen presents a critical challenge of breast cancer therapeutics.
Yao Tian   +9 more
doaj   +2 more sources

LncRNA SNHG6 sponges miR-101 and induces tamoxifen resistance in breast cancer cells through induction of EMT

open access: yesFrontiers in Oncology, 2022
Acquired resistance is a major clinical challenge for tamoxifen-based therapy. In this study, we focused on lncRNA SNHG6 which plays a role in chemoresistance of cancer cells, but has never been investigated in the context of tamoxifen resistance.
Mohammad Imran Khan   +2 more
doaj   +1 more source

Dynamic surveillance of tamoxifen‐resistance in ER‐positive breast cancer by CAIX‐targeted ultrasound imaging

open access: yesCancer Medicine, 2020
Tamoxifen‐based hormone therapy is central for the treatment of estrogen receptor positive (ER+) breast cancer. However, the acquired tamoxifen resistance, typically co‐exists with hypoxia, remains a major challenge.
Ying Li   +10 more
doaj   +1 more source

Progress in the Understanding of the Mechanism of Tamoxifen Resistance in Breast Cancer

open access: yesFrontiers in Pharmacology, 2020
Tamoxifen is a drug commonly used in the treatment of breast cancer, especially for postmenopausal patients. However, its efficacy is limited by the development of drug resistance. Downregulation of estrogen receptor alpha (ERα) is an important mechanism
Jingwei Yao   +7 more
doaj   +1 more source

Molecular Analysis of Acquired Tamoxifen Resistance in Breast Cancer Cell Line

open access: yesAsian Pacific Journal of Cancer Biology, 2017
Background: Tamoxifen is an FDA approved drug for the prevention and the treatment of breast cancer, but its therapeutic benefit is limited by the development of drug resistance.
Mansour Abachi   +4 more
doaj   +3 more sources

Upregulation of PI3K/AKT/PTEN pathway is correlated with glucose and glutamine metabolic dysfunction during tamoxifen resistance development in MCF-7 cells

open access: yesScientific Reports, 2020
Tamoxifen resistance is emerging as a big challenge in endocrine therapy of luminal A breast cancer patients. In this study, we aimed to determine the molecular changes of PI3K/AKT/PTEN signaling pathway during tamoxifen-resistance development using ...
Lama Hamadneh   +3 more
doaj   +1 more source

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