ArticleMedical science monitor : international medical journal of experimental and clinical research2019
Increased Expression of Exosomal AGAP2-AS1 (AGAP2 Antisense RNA 1) In Breast Cancer Cells Inhibits Trastuzumab-Induced Cell Cytotoxicity.
Article in Medical science monitor : international medical journal of experimental and clinical research, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 62 papers, 1 of them a synthesis that pooled it.
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Who cites it
62 citing papers in PubMed, 1 synthesis or guideline pooled it, 94 citations in OpenAlex.
- Unveiling the functional paradigm of exosome-derived long non-coding RNAs (lncRNAs) in cancer: based on a narrative review and systematic review.Journal of cancer research and clinical oncology · 2023Pooled it
- Circulating IncRNA DRAIC as a potential serum biomarker for predicting lymphatic and vascular spread in pancreatic cancer.Journal of medical biochemistry · 2026Article
- Harnessing exosomal long non-coding RNAs as a new frontier for molecular diagnostics and therapeutics in diabetes mellitus.Cell communication and signaling : CCS · 2026Review
- Long non-coding RNAs in the exosomal network: dual roles and clinical implications in cancer.Animal cells and systems · 2026Review
- The mechanism of ncRNA in trastuzumab resistance in HER2-positive tumors.Medical oncology (Northwood, London, England) · 2025Review
- Potential biological roles of exosomal non-coding RNAs in breast cancer.FASEB journal : official publication of the Federation of American Societies for Experimental Biology · 2025Review
- The role of exosomal non-coding RNAs in the breast cancer tumor microenvironment.Functional & integrative genomics · 2025Review
- Extracellular Vesicles as Mediators and Potential Targets in Combating Cancer Drug Resistance.Molecules (Basel, Switzerland) · 2025Review
- Extracellular vesicles in triple-negative breast cancer: current updates, challenges and future prospects.Frontiers in molecular biosciences · 2025Review
- Investigating the role of exosomal long non-coding RNAs in drug resistance within female reproductive system cancers.Frontiers in cell and developmental biology · 2025Review
- Biofluid-Derived Exosomal LncRNAs: Their Potential in Obesity and Related Comorbidities.Biology · 2024Review
- Review
- The signature of extracellular vesicles in hypoxic breast cancer and their therapeutic engineering.Cell communication and signaling : CCS · 2024Review
- Long Non-Coding RNAMolecules (Basel, Switzerland) · 2024Review
- Drug resistance in breast cancer is based on the mechanism of exocrine non-coding RNA.Discover oncology · 2024Review
- Biological Roles and Clinical Applications of Exosomes in Breast Cancer: A Brief Review.International journal of molecular sciences · 2024Review
- Exosomal lncRNAs as regulators of breast cancer chemoresistance and metastasis and their potential use as biomarkers.Frontiers in oncology · 2024Review
- LncRNA AGAP2 antisense RNA 1 stabilized by insulin-like growth factor 2 mRNA binding protein 3 promotes macrophage M2 polarization in clear cell renal cell carcinoma through regulation of the microRNA-9-5p/THBS2/PI3K-Akt pathway.Cancer cell international · 2023Article
- Exosomal Linc00969 induces trastuzumab resistance in breast cancer by increasing HER-2 protein expression and mRNA stability by binding to HUR.Breast cancer research : BCR · 2023Article
- The role of non-coding RNAs in extracellular vesicles in breast cancer and their diagnostic implications.Oncogene · 2023Review
2 more citing papers are in PubMed but not listed here.
Corrections and comments
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Authors and funding
5 authors at 2 institutions in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
BACKGROUND Trastuzumab therapy is important for patients with HER2-positive breast cancer, but more and more patients have experienced trastuzumab resistance during recent years. Accumulating evidence from recent studies showed that long non-coding RNAs (lncRNAs) play essential roles in chemoresistance of various cancer types, but the precise role of lncRNAs in trastuzumab resistance is unclear. In the present study, we aimed to identify the biofunction of lncRNA APAP2-AS1 in tranastuzumab resistance and to reveal the underlying regulatory mechanism. MATERIAL AND METHODS By culturing HER2-positive SKBR-3 and BT474 cells with transtuzumab-containing medium, we built trastuzumab-resistant cells. Quantitative real-time PCR was used to test the expression of AGAP2-AS1 in the built trastuzumab-resistant cells. Cell viability assay and TUNEL assay were used to test the cell viability and apoptosis in each group. Exosomes were purified from cells cultured in exosomes-depleted FBS and identified by transmission electron microscopy. RESULTS qRT-PCR assay suggested that AGAP2-AS1 was upregulated in the built trastuzumab-resistant cells when compared with parental sensitive cells. Cell viability assay showed that silencing of AGAP2-AS1 enhanced the cytotoxicity induced by trastuzumab treatment. Mechanistically, we revealed that AGAP2-AS1 was secreted outside cells by incorporation into exosomes in an hnRNPA2B1-dependent manner. More importantly, co-culture AGAP2-AS1-containing exosomes with sensitive cells reduced the trastuzumab-induced cell death, and silencing of AGAP2-AS1 from exosomes reversed this effect. In summary, AGAP2-AS1 promotes trastuzumab resistance of breast cancer cells through packaging into exosomes. CONCLUSIONS Knockdown of AGAP2-AS1 may be helpful for improving the clinical outcome for HER2+ breast cancer patients and could serve as a therapeutic target.
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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.