MRX34
/ Synlogic
- LARVOL DELTA
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November 17, 2025
Nanotechnology-enabled miRNA delivery systems next-generation molecular strategies in cancer therapy.
(PubMed, Biochem Biophys Res Commun)
- "We conclude with a concise roadmap that prioritizes platform selection for near-term translation and integration with tumor-specific miRNA signatures to advance personalized therapy. Our translation-first synthesis links barriers to design solutions (pKa-tuned LNPs; exosome-mimetic/hybrid vesicles) and highlights AI/ML-guided formulation; lessons from MRX34/TargomiRs inform safety, scalability, and CMC-together yielding a practical 24-36-month roadmap toward clinical readiness, with functionalized LNPs best positioned for near-term translation."
Journal • Review • Oncology
July 22, 2025
Targeted Delivery of miR-34a via Anti-CD47 Antibody Conjugates for Enhanced Cancer Immunotherapy in Triple Negative Breast Cancer.
(PubMed, Small)
- "However, the clinical translation of miR-34a has been hindered by challenges such as poor stability, inefficient cytoplasmic delivery, and immune-related toxicities, as evidenced by the failure of MRX34 in trials...This dual mechanism promoted macrophage phagocytosis, enhanced CD8+ T-cell activation, and induced apoptosis, resulting in significant tumor inhibition without systemic toxicity. These findings demonstrate the transformative potential of aCD47-C-miR34a in overcoming TNBC's oncogenic and immune-evasive mechanisms, paving the way for innovative treatments in TNBC and other heterogeneous, aggressive cancers."
IO biomarker • Journal • Breast Cancer • HER2 Breast Cancer • HER2 Positive Breast Cancer • Hormone Receptor Breast Cancer • Oncology • Solid Tumor • Triple Negative Breast Cancer • CD8 • ER • HER-2 • MIR34A • PD-L1 • PGR
May 06, 2025
Oligonucleotide-Based Modulation of Macrophage Polarization: Emerging Strategies in Immunotherapy.
(PubMed, Immun Inflamm Dis)
- "Optimizing delivery platforms, enhancing molecular stability, and rigorous safety profiling are critical. Integration with emerging modalities-such as engineered CAR‑macrophages-will enable precise, disease‑specific interventions, and advance oligonucleotide‑guided macrophage modulation toward clinical translation."
Journal • Review • Infectious Disease • Oncology
August 07, 2022
MicroRNAs and Long Non-coding RNAs as Novel Targets in Anti-cancer Drug Development.
(PubMed, Curr Pharm Biotechnol)
- "In this chapter, the strategies and importance of targeting microRNAs and long non-coding RNAs will be described, along with the clinical studies that involve microRNA-based cancer therapeutics and preclinical studies that involve long non-coding RNA-based therapeutics. Finally, the delivery strategies that have great importance in the effective delivery of the non-coding RNA-based cancer therapeutics, hence the therapy's effectiveness, will be described."
Journal • Oncology
November 17, 2021
Functional and Clinical Significance of Dysregulated microRNAs in Liver Cancer.
(PubMed, Cancers (Basel))
- "Clinical treatment drugs have been developed based on miR-34 and miR-122 (MRX34 and Miravirsen, respectively), but their side effects have not yet been overcome. Future research is needed to address these weaknesses and establish a feasible microRNA-based treatment strategy for liver cancer."
Clinical • Journal • Review • Gastrointestinal Cancer • Hepatitis C • Hepatology • Infectious Disease • Inflammation • Liver Cancer • Oncology • Solid Tumor • MIR122 • MIR21 • MIR214 • MIR34A
March 26, 2021
MicroRNA-34a: Potent Tumor Suppressor, Cancer Stem Cell Inhibitor, and Potential Anticancer Therapeutic.
(PubMed, Front Cell Dev Biol)
- "We shall briefly discuss potential reasons behind the failure of the first-in-class clinical trial of MRX34, a liposomal miR-34a mimic. Finally, we offer several clinical settings where miR-34a can potentially be deployed to therapeutically target CSCs and advanced, therapy-resistant, and p53-mutant tumors in order to overcome therapy resistance and curb tumor relapse."
Cancer stem cells • IO biomarker • Journal • Review • Oncology • BCL2 • CD44 • MIR34A • MYC • TP53
September 29, 2016
Down-regulation of target gene expression in human white blood cells (hWBCs) by MRX34, a liposomal miR-34 mimic: Next generation sequencing (NGS) results from a first-in-human trial of microRNA cancer therapy
(ESMO 2016)
- P1; "This NGS analysis of hWBC samples from patients treated with MRX34 in a first-in-human clinical trial of miRNA cancer therapy showed dosedependent modulation of expression for validated and predicted miR-34a target genes, including key oncogenes. Our work suggests that MRX34 effectively delivers active miR-34a mimics to hWBCs in patients with cancer, and provides a potentially useful method to evaluate biomarkers of response to MRX34 therapy."
Biomarker • Cancer stem cells • Clinical • Tumor microenvironment • Biosimilar • Oncology
July 08, 2018
Shousha, Naglaa Zayed, Mahmoud N El-Rouby, Ahmed O Kaseb, Ashraf
- "...Ahmed O. Kaseb...Veliparib Hydrophobic bile acids, such as deoxycholic acid (DCA), are know to modulate the expression of several apoptosis-related proteins, including c-Jun N-terminal kinase (JNK), leading to cell death. In addition, microRNAs (miRNAs or miRs) are being increasingly implicated in cell death and in the pathogenesis of human liver diseases."
April 03, 2020
Phase 1 study of MRX34, a liposomal miR-34a mimic, in patients with advanced solid tumours.
(PubMed, Br J Cancer)
- P1 | "MRX34 treatment with dexamethasone premedication demonstrated a manageable toxicity profile in most patients and some clinical activity. Although the trial was closed early due to serious immune-mediated AEs that resulted in four patient deaths, dose-dependent modulation of relevant target genes provides proof-of-concept for miRNA-based cancer therapy."
Clinical • Journal • P1 data
February 17, 2020
Epithelial to Mesenchymal Transition: A Mechanism that Fuels Cancer Radio/Chemoresistance.
(PubMed, Cells)
- "Several EMT inhibitory mechanisms are instrumental in reversing EMT or targeting EMT cells. Currently, these mechanisms are also significant for clinical use."
Journal • Review • CD8 • IL6
June 28, 2019
Expanding the Biotherapeutics Realm via miR-34a: "Potent Clever Little" Agent in Breast Cancer Therapy.
(PubMed, Curr Pharm Biotechnol)
- "These findings suggest a robust cause for developing miR-34a as a therapeutic agent to target BC. In that scenario, miR-34a is strongly useful to introduce new therapeutic goals for BC. Moreover, this review aims to confirm the signal pathways, therapeutic and diagnostic values of miR- 34a in BC and beyond."
IO Biomarker • Journal
February 07, 2019
MicroRNA-34 family: a potential tumor suppressor and therapeutic candidate in cancer.
(PubMed, J Exp Clin Cancer Res)
- P1; "...Along with the application of MRX34, the first tumor-targeted microRNA drug which based on miR-34a mimics, on phase I clinical trial (NCT01829971), the significance of miR-34 is increasingly recognized...Furthermore, its potential role as a microRNA therapeutic candidate is also discussed. Notwithstanding some obstacles existed, the extensive application prospect of miR-34 on oncotherapy cannot be neglected."
Journal • Review
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