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Wang W, Deng J, Zhang Y, Li J. A Small-Molecule Probe with a Dual Function of miRNA Inhibition and Target identification. Chemistry 2023; 29:e202202013. [PMID: 36253322 DOI: 10.1002/chem.202202013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2022] [Indexed: 11/07/2022]
Abstract
By virtue of their key roles in pathologies, miRNAs represent a promising class of therapeutic targets. While high-fidelity small-molecule modulators of miRNAs can be identified via high-throughput screening using cellular reporter systems, their modes of action are elusive due to the lack of proper tools. Here, we report a small-molecule probe, 1 a, that is capable of elucidating its biological target along miRNA inhibition. Derived from norathyriol, a nature product, 1 a possessed a bioorthogonal alkyne moiety for subsequent labeling via copper-catalyzed azide-alkyne cycloaddition chemistry. We demonstrated that 1 a inhibited a panel of different miRNAs by blocking their loading onto argonaute 2 (AGO2), which is the key protein responsible for miRNA function. With the alkyne handle, we successfully identified AGO2 as an intracellular target of 1 a. Therefore, this work presents a novel small-molecule tool for suppressing and probing miRNA regulatory pathways.
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Affiliation(s)
- Weishan Wang
- State Key Laboratory of Analytical Chemistry for Life Sciences, Jiangsu Key Laboratory of Advanced Organic Materials, School of Chemistry and Chemical Engineering, Chemistry and Biomedicine Innovation Center (ChemBIC), Nanjing University, Nanjing, 210023, P. R. China
| | - Jiafang Deng
- State Key Laboratory of Analytical Chemistry for Life Sciences, Jiangsu Key Laboratory of Advanced Organic Materials, School of Chemistry and Chemical Engineering, Chemistry and Biomedicine Innovation Center (ChemBIC), Nanjing University, Nanjing, 210023, P. R. China
| | - Yan Zhang
- State Key Laboratory of Analytical Chemistry for Life Sciences, Jiangsu Key Laboratory of Advanced Organic Materials, School of Chemistry and Chemical Engineering, Chemistry and Biomedicine Innovation Center (ChemBIC), Nanjing University, Nanjing, 210023, P. R. China
| | - Jinbo Li
- State Key Laboratory of Analytical Chemistry for Life Sciences, Jiangsu Key Laboratory of Advanced Organic Materials, School of Chemistry and Chemical Engineering, Chemistry and Biomedicine Innovation Center (ChemBIC), Nanjing University, Nanjing, 210023, P. R. China
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2
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Izadi Z, Barzegari E, Iranpanah A, Sajadimajd S, Derakhshankhah H. Gentamycin Rationally Repositioned to Inhibit miR-34a Ameliorates Oxidative Injury to PC12 Cells. ACS OMEGA 2023; 8:771-781. [PMID: 36643496 PMCID: PMC9835649 DOI: 10.1021/acsomega.2c06112] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/22/2022] [Accepted: 12/08/2022] [Indexed: 06/17/2023]
Abstract
Ischemic stroke accompanies oxidative stress and cell death in the cerebral tissue. The microRNA miR-34a plays a pivotal role in this molecular pathology. This study presents the rational repositioning of aminoglycosidic antibiotics as miR-34a antagonists in order to assess their efficiency in protecting the PC12 stroke model cells from oxidative stress occurring under cerebral ischemic conditions. A library of 29 amino-sugar compounds were screened against anticipated structural models of miR-34a through molecular docking. MiR-ligand interactions were mechanistically studied by molecular dynamics simulations and free-energy calculations. Cultured PC12 cells were treated by H2O2 alone or in combination with gentamycin and neomycin as selected drugs. Cell viability and apoptosis were detected by 3-(4,5-dimethylthiazolyl-2)-2,5-diphenyltetrazolium bromide (MTT) and annexin V-FITC/propidium iodate (PI) double staining assays, respectively. The expression levels of key factors involved in cell proliferation, oxidative stress, and apoptosis in treated PC12 cells were measured through a quantitative real-time polymerase chain reaction and flow cytometric annexin V-FITC/PI double staining assays. A stable and energetically favorable binding was observed for miR-34a with gentamycin and neomycin. Gentamycin pretreatments followed by H2O2 oxidative injury led to increased cell viability and protected PC12 cells against H2O2-induced apoptotic events. This study will help in further understanding how the suppression of miR-34a in neural tissue affects the cell viability upon stroke.
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Affiliation(s)
- Zhila Izadi
- Pharmaceutical
Sciences Research Center, Health Institute, Kermanshah University of Medical Sciences, Kermanshah 6715847141, Iran
- USERN
Office, Kermanshah University of Medical
Sciences, Kermanshah 6715847141, Iran
| | - Ebrahim Barzegari
- Medical
Biology Research Center, Health Technology Institute, Kermanshah University of Medical Sciences, Kermanshah 6715847141, Iran
| | - Amin Iranpanah
- Pharmaceutical
Sciences Research Center, Health Institute, Kermanshah University of Medical Sciences, Kermanshah 6715847141, Iran
- USERN
Office, Kermanshah University of Medical
Sciences, Kermanshah 6715847141, Iran
| | - Soraya Sajadimajd
- Department
of Biology, Faculty of Science, Razi University, Kermanshah 67144-14971, Iran
| | - Hossein Derakhshankhah
- Pharmaceutical
Sciences Research Center, Health Institute, Kermanshah University of Medical Sciences, Kermanshah 6715847141, Iran
- USERN
Office, Kermanshah University of Medical
Sciences, Kermanshah 6715847141, Iran
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3
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Das B, Murata A, Nakatani K. A small-molecule fluorescence probe ANP77 for sensing RNA internal loop of C, U and A/CC motifs and their binding molecules. Nucleic Acids Res 2021; 49:8462-8470. [PMID: 34358308 PMCID: PMC8421207 DOI: 10.1093/nar/gkab650] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2020] [Revised: 07/02/2021] [Accepted: 08/04/2021] [Indexed: 11/12/2022] Open
Abstract
Small-molecules interacting with particular RNAs and modulating their functions are vital tools for RNA-targeting drug discovery. Considering the substantial distribution of the internal loops involving two contiguous cytosines opposite to a single-nucleotide base (Y/CC; Y = C, U or A) within the biologically significant functional RNAs, developing small-molecule probes targeting Y/CC sites should provide profound insight into their functions and roles in biochemical processes. Herein, we report ANP77 as the small-molecule probe for sensing RNA internal loop of Y/CC motifs and molecules binding to the motifs. The Y/CC motifs interact with ANP77 via the formation of a 1:1 complex and quench the fluorescence of ANP77. The flanking sequence-dependent binding to C/CC and U/CC sites was assessed by fluorometric screening, provided the binding heat maps. The quenching phenomena of ANP77 fluorescence was confirmed with intrinsic potential drug target pre-miR-1908. Finally, the binding-dependent fluorescence quenching of ANP77 was utilized in the fluorescence indicator displacement assay to demonstrate the potential of ANP77 as an indicator by using the RNA-binding drugs, risdiplam and branaplam.
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Affiliation(s)
- Bimolendu Das
- Department of Regulatory Bioorganic Chemistry, SANKEN (The Institute of Scientific and Industrial Research), Osaka University, 8-1 Mihogaoka, Ibaraki, Osaka 567-0047, Japan
| | - Asako Murata
- Department of Regulatory Bioorganic Chemistry, SANKEN (The Institute of Scientific and Industrial Research), Osaka University, 8-1 Mihogaoka, Ibaraki, Osaka 567-0047, Japan
| | - Kazuhiko Nakatani
- Department of Regulatory Bioorganic Chemistry, SANKEN (The Institute of Scientific and Industrial Research), Osaka University, 8-1 Mihogaoka, Ibaraki, Osaka 567-0047, Japan
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4
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Lee LK, Medzikovic L, Eghbali M, Eltzschig HK, Yuan X. The Role of MicroRNAs in Acute Respiratory Distress Syndrome and Sepsis, From Targets to Therapies: A Narrative Review. Anesth Analg 2020; 131:1471-1484. [PMID: 33079870 PMCID: PMC8532045 DOI: 10.1213/ane.0000000000005146] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Acute respiratory distress syndrome (ARDS) is a significant cause of morbidity and mortality in the intensive care unit (ICU) and is characterized by lung epithelial and endothelial cell injury, with increased permeability of the alveolar-capillary membrane, leading to pulmonary edema, severe hypoxia, and difficulty with ventilation. The most common cause of ARDS is sepsis, and currently, treatment of ARDS and sepsis has consisted mostly of supportive care because targeted therapies have largely been unsuccessful. The molecular mechanisms behind ARDS remain elusive. Recently, a number of microRNAs (miRNAs) identified through high-throughput screening studies in ARDS patients and preclinical animal models have suggested a role for miRNA in the pathophysiology of ARDS. miRNAs are small noncoding RNAs ranging from 18 to 24 nucleotides that regulate gene expression via inhibition of the target mRNA translation or by targeting complementary mRNA for early degradation. Unsurprisingly, some miRNAs that are differentially expressed in ARDS overlap with those important in sepsis. In addition, circulatory miRNA may be useful as biomarkers or as targets for pharmacologic therapy. This can be revolutionary in a syndrome that has neither a measurable indicator of the disease nor a targeted therapy. While there are currently no miRNA-based therapies targeted for ARDS, therapies targeting miRNA have reached phase II clinical trials for the treatment of a wide range of diseases. Further studies may yield a unique miRNA profile pattern that serves as a biomarker or as targets for miRNA-based pharmacologic therapy. In this review, we discuss miRNAs that have been found to play a role in ARDS and sepsis, the potential mechanism of how particular miRNAs may contribute to the pathophysiology of ARDS, and strategies for pharmacologically targeting miRNA as therapy.
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Affiliation(s)
- Lisa K. Lee
- Department of Anesthesiology and Perioperative Medicine, David Geffen School of Medicine at University of California, Los Angeles, Los Angeles, California
| | - Lejla Medzikovic
- Department of Anesthesiology and Perioperative Medicine, David Geffen School of Medicine at University of California, Los Angeles, Los Angeles, California
| | - Mansoureh Eghbali
- Department of Anesthesiology and Perioperative Medicine, David Geffen School of Medicine at University of California, Los Angeles, Los Angeles, California
| | - Holger K. Eltzschig
- Department of Anesthesiology, The University of Texas Health Science Center, McGovern Medical School, Houston, Texas
| | - Xiaoyi Yuan
- Department of Anesthesiology, The University of Texas Health Science Center, McGovern Medical School, Houston, Texas
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5
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Bhattarai U, Hsieh WC, Yan H, Guo ZF, Shaikh AY, Soltani A, Song Y, Ly DH, Liang FS. Bifunctional small molecule-oligonucleotide hybrid as microRNA inhibitor. Bioorg Med Chem 2020; 28:115394. [PMID: 32139203 DOI: 10.1016/j.bmc.2020.115394] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2019] [Revised: 02/10/2020] [Accepted: 02/14/2020] [Indexed: 10/25/2022]
Abstract
miRNAs are key regulators of various biological processes. Dysregulation of miRNA is linked to many diseases. Development of miRNA inhibitor has implication in disease therapy and study of miRNA function. The biogenesis pathway of miRNA involves the processing of pre-miRNA into mature miRNA by Dicer enzyme. We previously reported a proximity enabled approach that employs bifunctional small molecules to regulate miRNA maturation through inhibiting the enzymatic activity of Dicer. By conjugating to an RNA targeting unit, an RNase inhibitor could be delivered to the cleavage site of specific pre-miRNA to deactivate the complexed Dicer enzyme. Herein, we expanded this bifunctional strategy by showing that antisense oligonucleotides (ASOs), including morpholinos and γPNAs, could be readily used as the RNA recognition unit to generate bifunctional small molecule-oligonucleotide hybrids as miRNA inhibitors. A systematic comparison revealed that the potency of these hybrids is mainly determined by the RNA binding of the targeting ASO molecules. Since the lengths of the ASO molecules used in this approach were much shorter than commonly used anti-miRNA ASOs, this may provide benefits to the specificity and cellular delivery of these hybrids. We expect that this approach could be complementary to traditional ASO and small molecule based miRNA inhibition and contribute to the study of miRNA.
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Affiliation(s)
- Umesh Bhattarai
- Department of Chemistry and Chemical Biology, University of New Mexico, 300 Terrace Street NE, Albuquerque, NM 87131, USA
| | - Wei-Che Hsieh
- Institute for Biomolecular Design and Discovery (IBD) and Department of Chemistry, Carnegie Mellon University, 4400 Fifth Avenue, Pittsburgh, PA 15213, USA
| | - Hao Yan
- Department of Chemistry and Chemical Biology, University of New Mexico, 300 Terrace Street NE, Albuquerque, NM 87131, USA; Department of Chemistry, Case Western Reserve University, 2080 Adelbert Road, Cleveland, OH 44106, USA
| | - Zhi-Fo Guo
- Department of Chemistry and Chemical Biology, University of New Mexico, 300 Terrace Street NE, Albuquerque, NM 87131, USA
| | - Ashif Yasin Shaikh
- Institute for Biomolecular Design and Discovery (IBD) and Department of Chemistry, Carnegie Mellon University, 4400 Fifth Avenue, Pittsburgh, PA 15213, USA
| | - Aria Soltani
- Institute for Biomolecular Design and Discovery (IBD) and Department of Chemistry, Carnegie Mellon University, 4400 Fifth Avenue, Pittsburgh, PA 15213, USA
| | - Yabin Song
- Department of Chemistry and Chemical Biology, University of New Mexico, 300 Terrace Street NE, Albuquerque, NM 87131, USA
| | - Danith H Ly
- Institute for Biomolecular Design and Discovery (IBD) and Department of Chemistry, Carnegie Mellon University, 4400 Fifth Avenue, Pittsburgh, PA 15213, USA.
| | - Fu-Sen Liang
- Department of Chemistry and Chemical Biology, University of New Mexico, 300 Terrace Street NE, Albuquerque, NM 87131, USA; Department of Chemistry, Case Western Reserve University, 2080 Adelbert Road, Cleveland, OH 44106, USA.
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6
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Computational Resources for Prediction and Analysis of Functional miRNA and Their Targetome. Methods Mol Biol 2019; 1912:215-250. [PMID: 30635896 DOI: 10.1007/978-1-4939-8982-9_9] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
microRNAs are evolutionarily conserved, endogenously produced, noncoding RNAs (ncRNAs) of approximately 19-24 nucleotides (nts) in length known to exhibit gene silencing of complementary target sequence. Their deregulated expression is reported in various disease conditions and thus has therapeutic implications. In the last decade, various computational resources are published in this field. In this chapter, we have reviewed bioinformatics resources, i.e., miRNA-centered databases, algorithms, and tools to predict miRNA targets. First section has enlisted more than 75 databases, which mainly covers information regarding miRNA registries, targets, disease associations, differential expression, interactions with other noncoding RNAs, and all-in-one resources. In the algorithms section, we have compiled about 140 algorithms from eight subcategories, viz. for the prediction of precursor (pre-) and mature miRNAs. These algorithms are developed on various sequence, structure, and thermodynamic based features incorporated into different machine learning techniques (MLTs). In addition, computational identification of miRNAs from high-throughput next generation sequencing (NGS) data and their variants, viz. isomiRs, differential expression, miR-SNPs, and functional annotation, are discussed. Prediction and analysis of miRNAs and their associated targets are also evaluated under miR-targets section providing knowledge regarding novel miRNA targets and complex host-pathogen interactions. In conclusion, we have provided comprehensive review of in silico resources published in miRNA research to help scientific community be updated and choose the appropriate tool according to their needs.
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7
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Fan R, Xiao C, Wan X, Cha W, Miao Y, Zhou Y, Qin C, Cui T, Su F, Shan X. Small molecules with big roles in microRNA chemical biology and microRNA-targeted therapeutics. RNA Biol 2019; 16:707-718. [PMID: 30900502 DOI: 10.1080/15476286.2019.1593094] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023] Open
Abstract
MicroRNAs (miRNAs) are small, non-coding RNAs that post-transcriptionally regulate gene expression. Aberrant miRNA expression or function have close links with various human diseases. Therefore, therapeutic treatments with disease-associated miRNAs as targets are emerging. However, the intracellular miRNA networks are extremely complicated and poorly understood, which thus hinder the development of miRNA-targeted therapeutics. Small molecules that are able to regulate endogenous miRNAs hold great potential in both elucidation of miRNA networks and treatment of miRNA-related diseases. Herein, we summarize current strategies for discovery of small molecule modifiers of miRNAs, and we highlight aspects of miRNA cellular biology elucidated by using these small molecules and miRNA-targeted therapeutics realized by these small molecules. We envision that this area will expand dramatically in the near future and will ultimately contribute to a better understanding of miRNA-involved cellular processes and development of therapeutic agents for miRNA-associated diseases.
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Affiliation(s)
- Rengen Fan
- a Department of General Surgery, Yancheng City No. 1 People's Hospital , Yancheng , China
| | - Chaocheng Xiao
- b Department of General Surgery, Yancheng City No. 1 People's Hospital , Yancheng , China
| | - Xinqiang Wan
- c Department of Gynaecology and Obstetrics, Yancheng City No. 1 People's Hospital , Yancheng , China
| | - Wenzhang Cha
- a Department of General Surgery, Yancheng City No. 1 People's Hospital , Yancheng , China
| | - Yufeng Miao
- d Department of Medical Oncology , Wuxi Third People's Hospital , Wuxi , China
| | - Yong Zhou
- a Department of General Surgery, Yancheng City No. 1 People's Hospital , Yancheng , China
| | - Chenglin Qin
- a Department of General Surgery, Yancheng City No. 1 People's Hospital , Yancheng , China
| | - Ting Cui
- e Department of Cardiology, The Third People's Hospital of Yancheng , Yancheng , China
| | - Fenglian Su
- f School of Medical University, Xuzhou , Xuzhou , China
| | - Xiangxiang Shan
- g Department of Geraeology, Yancheng City No.1 People's Hospital , Yancheng , China
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8
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Vo DD, Becquart C, Tran TPA, Di Giorgio A, Darfeuille F, Staedel C, Duca M. Building of neomycin-nucleobase-amino acid conjugates for the inhibition of oncogenic miRNAs biogenesis. Org Biomol Chem 2019; 16:6262-6274. [PMID: 30116813 DOI: 10.1039/c8ob01858h] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
MicroRNAs (miRNAs) are a recently discovered category of small RNA molecules that regulate gene expression at the post-transcriptional level. Accumulating evidence indicates that miRNAs are aberrantly expressed in a variety of human cancers, thus being oncogenic. The inhibition of oncogenic miRNAs (defined as the blocking of miRNAs' production or function) would find application in the therapy of different types of cancer in which these miRNAs are implicated. In this work, we describe the design and synthesis of new small-molecule RNA ligands with the aim of inhibiting Dicer-mediated processing of oncogenic miRNAs. One of the synthesized compound (4b) composed of the aminoglycoside neomycin conjugated to an artificial nucleobase and to amino acid histidine is able to selectively decrease miR-372 levels in gastric adenocarcinoma (AGS) cells and to restore the expression of the target LATS2 protein. This activity led to the inhibition of proliferation of these cells. The study of the interactions of 4b with pre-miR-372 allowed for the elucidation of the molecular mechanism of the conjugate, thus leading to new perspectives for the design of future inhibitors.
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Affiliation(s)
- Duc Duy Vo
- Université Côte d'Azur, CNRS, Institute of Chemistry of Nice (ICN), Nice, France.
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9
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Yan H, Bhattarai U, Song Y, Liang FS. Design, synthesis and activity of light deactivatable microRNA inhibitor. Bioorg Chem 2018; 80:492-497. [PMID: 29990897 DOI: 10.1016/j.bioorg.2018.07.003] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2018] [Revised: 06/25/2018] [Accepted: 07/01/2018] [Indexed: 12/28/2022]
Abstract
miRNAs are key cellular regulators and their dysregulation is associated with many human diseases. They are usually produced locally in a spatiotemporally controlled manner to target mRNAs and regulate gene expression. Thus, developing chemical tools for manipulating miRNA with spatiotemporal precise is critical for studying miRNA. Herein, we designed a strategy to control miRNA biogenesis with light controllable inhibitor targeting the pre-miRNA processing by Dicer. By conjugating two non-inhibiting units, a low affinity Dicer inhibitor and a pre-miRNA binder, through a photocleavable linker, the bifunctional molecule obtained could inhibit miRNA production. Taking advantage of the photocleavable property of the linker, the bifunctional inhibitor can be fragmented into separate non-inhibiting units and therefore be deactivated by light. We expect that this strategy could be applied to generate chemical biological tools that allow light-mediated spatiotemporal control of miRNA maturation and contribute to the study of miRNA function.
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Affiliation(s)
- Hao Yan
- Department of Chemistry and Chemical Biology, University of New Mexico, 300 Terrace Street NE, Albuquerque, NM 87131, United States
| | - Umesh Bhattarai
- Department of Chemistry and Chemical Biology, University of New Mexico, 300 Terrace Street NE, Albuquerque, NM 87131, United States
| | - Yabin Song
- Department of Chemistry and Chemical Biology, University of New Mexico, 300 Terrace Street NE, Albuquerque, NM 87131, United States
| | - Fu-Sen Liang
- Department of Chemistry and Chemical Biology, University of New Mexico, 300 Terrace Street NE, Albuquerque, NM 87131, United States.
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10
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Tian T, Mingyi M, Qiu X, Qiu Y. MicroRNA-101 reverses temozolomide resistance by inhibition of GSK3β in glioblastoma. Oncotarget 2018; 7:79584-79595. [PMID: 27792996 PMCID: PMC5346737 DOI: 10.18632/oncotarget.12861] [Citation(s) in RCA: 40] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2016] [Accepted: 10/14/2016] [Indexed: 02/07/2023] Open
Abstract
Glioblastoma multiforme (GBM) is a chemotherapy-resistant brain tumor with limited treatment options. Temozolomide (TMZ), an alkylating agent, is a front-line chemotherapeutic drug currently employed in GBM. Although it is currently the most promising chemotherapy for GBM, resistance to TMZ is also common and accounts for many treatment failures. Therefore, understanding the underlying mechanisms that generate resistance is essential to develop more effective chemotherapies. Here, we show that microRNA-101 (miR-101) was significantly downregulated in TMZ-resistant GBM cells and human specimens. Instead, over-expression of miR-101 could sensitize resistant GBM cells to TMZ through downregulation of glycogen synthase kinase 3β (GSK3β). Moreover, we found that GSK3β inhibition could enhance TMZ effect through repression of MGMT via promoter methylation. Importantly, decreased expression of miR-101 is related to poor prognosis in patients with GBM, suggesting its potential role as a new prognostic marker in GBM. In conclusion, our study demonstrates that miR-101 can reverse TMZ resistance by inhibition of GSK3β in GBM, thus offer a novel and powerful strategy for GBM therapy.
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Affiliation(s)
- Tian Tian
- Department of Neurology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, People's Republic of China.,Department of Neurology, Institute of Clinical Medicine, The First Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, People's Republic of China
| | - Ma Mingyi
- Department of Neurology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, People's Republic of China
| | - Xia Qiu
- Department of Medicine, Shangqiu Medical School, Shangqiu 476000, Henan Province, People's Republic of China
| | - Yang Qiu
- Department of Clinical Medicine, Shaoyang Medical College, Shaoyang 422000, Hunan Province, People's Republic of China
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11
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Nahar S, Nayak AK, Ghosh A, Subudhi U, Maiti S. Enhanced and synergistic downregulation of oncogenic miRNAs by self-assembled branched DNA. NANOSCALE 2017; 10:195-202. [PMID: 29210414 DOI: 10.1039/c7nr06601e] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
miRNAs, a group of small non-coding RNA molecules, regulate the expression of many genes involved in various cellular processes. Acute evidence suggests that one miRNA can regulate many genes as its targets, while one gene can be targeted by many miRNAs that co-operatively regulate the gene. Thus, targeting a single miRNA is not sufficient enough to rescue the disease phenotype but it is also essential to target multiple miRNAs simultaneously. This inspired us to design a novel DNA nanostructure that can concurrently downregulate multiple oncomiRNAs. Here we designed a programmable antimiR branched DNA (antimiR-bDNA) nanostructure having antimiRNAs for selective binding to oncomiRNAs miRNA-27a, 96 and 182 which collectively downregulate FOXO1a expression. The antimiR-bDNAs show enhanced stability compared to naked antimiRNAs in serum and are able to knockdown these miRNAs with up to ∼50% greater repression as compared to antimiRNAs. This synergistic miRNA repression leads to the restoration of FOXO1a protein levels which in turn inhibit G1-S traversion in cancer cells. To the best of our knowledge, this is the first study harnessing the ability of bDNA structures to silence multiple miRNAs simultaneously.
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Affiliation(s)
- S Nahar
- CSIR-Institute of Genomics & Integrative Biology, Mathura Road, Delhi 110025, India.
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12
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Yan H, Bhattarai U, Guo ZF, Liang FS. Regulating miRNA-21 Biogenesis By Bifunctional Small Molecules. J Am Chem Soc 2017; 139:4987-4990. [PMID: 28287718 DOI: 10.1021/jacs.7b00610] [Citation(s) in RCA: 45] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
We report a new strategy to regulate microRNAs (miRNAs) biogenesis by using bifunctional small molecules that consist of a pre-miRNA binding unit connected by a linker to a Dicer inhibiting unit. In this effort, fluorescence polarization-based screening was used to identify neomycin as a pre-miR-21 binding ligand. Although neomycin cannot inhibit miR-21 maturation, linking it to the RNase inhibitor 1 forms the bifunctional conjugate 7A, which inhibits the production of miR-21. We expect that this strategy will be applicable to design other molecules for miRNA regulation.
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Affiliation(s)
- Hao Yan
- Department of Chemistry and Chemical Biology, University of New Mexico , 300 Terrace Street NE, Albuquerque, New Mexico 87131, United States
| | - Umesh Bhattarai
- Department of Chemistry and Chemical Biology, University of New Mexico , 300 Terrace Street NE, Albuquerque, New Mexico 87131, United States
| | - Zhi-Fo Guo
- Department of Chemistry and Chemical Biology, University of New Mexico , 300 Terrace Street NE, Albuquerque, New Mexico 87131, United States
| | - Fu-Sen Liang
- Department of Chemistry and Chemical Biology, University of New Mexico , 300 Terrace Street NE, Albuquerque, New Mexico 87131, United States
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13
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Vo DD, Duca M. Design of Multimodal Small Molecules Targeting miRNAs Biogenesis: Synthesis and In Vitro Evaluation. Methods Mol Biol 2017; 1517:137-154. [PMID: 27924480 DOI: 10.1007/978-1-4939-6563-2_10] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
microRNAs (miRNAs) are emerging as novel biological targets for medicinal chemists to develop chemical tools for intracellular regulation. In this context, the discovery of small-molecule drugs targeting specific miRNAs and modulating their production or function represents a very promising approach that could be further developed for targeted therapy in miRNA-related pathologies. Here, we describe the design of multimodal small molecules as RNA ligands targeting DICER-mediated miRNA maturation. The synthesis and the biochemical evaluation as ligands of stem-loop-structured precursor microRNAs (pre-miRNAs) are reported.
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Affiliation(s)
- Duc D Vo
- Institute of Chemistry of Nice, University of Nice Sophia Antipolis, UMR7272 CNRS, Parc Valrose, 06100, Nice, France
| | - Maria Duca
- Institute of Chemistry of Nice, University of Nice Sophia Antipolis, UMR7272 CNRS, Parc Valrose, 06100, Nice, France.
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14
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Murata A, Otabe T, Zhang J, Nakatani K. BzDANP, a Small-Molecule Modulator of Pre-miR-29a Maturation by Dicer. ACS Chem Biol 2016; 11:2790-2796. [PMID: 27536863 DOI: 10.1021/acschembio.6b00214] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
We here report the synthesis of novel molecule BzDANP having a three-ring benzo[c][1,8]naphthyridine system, the evaluation of its binding properties to a single nucleotide bulge in RNA duplexes, and BzDANP-induced suppression of pre-miR-29a processing by Dicer. BzDANP showed much increased affinity to the bulged RNAs as compared with the parent molecule DANP, which possesses the same hydrogen-bonding surface as BzDANP but in a two-ring [1,8]naphthyridine system. Melting temperature analysis of bulged RNAs showed that BzDANP most effectively stabilized the C-bulged RNA. Dicer-mediated processing of pre-miR-29a was suppressed by BzDANP in a concentration dependent manner. The presence of the C-bulge at the Dicer cleavage site was effective for the suppression of pre-miR-29a processing by BzDANP. These results demonstrated that the small molecule binding to the bulged site in the vicinity of the Dicer cleavage site could be a potential modulator for the maturation of pre-miRNA.
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Affiliation(s)
- Asako Murata
- Department of Regulatory
Bioorganic Chemistry, The Institute of Scientific and Industrial Research, Osaka University, 8-1 Mihogaoka, Ibaraki, Osaka 567-0047, Japan
| | - Takahiro Otabe
- Department of Regulatory
Bioorganic Chemistry, The Institute of Scientific and Industrial Research, Osaka University, 8-1 Mihogaoka, Ibaraki, Osaka 567-0047, Japan
| | - Jinhua Zhang
- Department of Regulatory
Bioorganic Chemistry, The Institute of Scientific and Industrial Research, Osaka University, 8-1 Mihogaoka, Ibaraki, Osaka 567-0047, Japan
| | - Kazuhiko Nakatani
- Department of Regulatory
Bioorganic Chemistry, The Institute of Scientific and Industrial Research, Osaka University, 8-1 Mihogaoka, Ibaraki, Osaka 567-0047, Japan
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15
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Abstract
microRNAs (miRNA) are small non-coding RNAs (sRNA) that post-transcriptionally regulate gene (mRNA) expression and are implicated in many biological processes and diseases. Many miRNAs have been reported to be altered in cardiovascular disease (CVD); both cellular and extracellular miRNA levels are affected by hypercholesterolemia and atherosclerosis. We and other groups have reported that lipoproteins transport miRNAs in circulation and these lipoprotein signatures are significantly altered in hypercholesterolemia and coronary artery disease (CAD). Extracellular miRNAs are a new class of potential biomarkers for CVD; however, they may also be new drug targets as high-density lipoproteins (HDL) transfer functional miRNAs to recipient cells in an endocrine-like form of intercellular communication that likely suppresses vascular inflammation. Recently, RNA-based drugs have emerged as the next frontier in drug therapy, and there are many miRNA inhibitors and mimics in clinical development. Here, we discuss specific miRNA drug targets and how their manipulation may impact CVD. We also address the potential for manipulating HDL-miRNA levels to treat CVD and the use of HDL as a delivery vehicle for RNA and chemical drugs. Finally, we outline the current and future challenges for HDL and miRNA-based therapeutics for the prevention and treatment of CVD.
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Affiliation(s)
- Danielle L Michell
- Department of Medicine, Vanderbilt University Medical Center, Nashville, TN, United States
| | - Kasey C Vickers
- Department of Medicine, Vanderbilt University Medical Center, Nashville, TN, United States.
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16
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Patil KM, Chen G. Recognition of RNA Sequence and Structure by Duplex and Triplex Formation: Targeting miRNA and Pre-miRNA. ACTA ACUST UNITED AC 2016. [DOI: 10.1007/978-3-319-34175-0_13] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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17
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Small-molecule approaches toward the targeting of oncogenic miRNAs: roadmap for the discovery of RNA modulators. Future Med Chem 2016; 8:803-16. [DOI: 10.4155/fmc-2016-0018] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023] Open
Abstract
miRNAs are a recently discovered class of small noncoding RNAs implicated in the regulation of gene expression. The deregulation of miRNAs levels has been linked to the development of various cancers where oncogenic miRNAs are overexpressed and tumor suppressor miRNAs are underexpressed. Here we report the three main strategies developed in order to discover small-molecule drugs able to selectively interfere with oncogenic miRNAs: the high throughput screening of large libraries of compounds, the focused screening of small libraries of molecules that are known to be able to interact with RNA thus being supposed modulators of miRNAs pathway and the design of small molecules based on the secondary structure of targeted RNA and/or three-dimensional structure of enzymes involved in miRNAs pathway.
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18
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Vo DD, Tran TPA, Staedel C, Benhida R, Darfeuille F, Di Giorgio A, Duca M. Oncogenic MicroRNAs Biogenesis as a Drug Target: Structure-Activity Relationship Studies on New Aminoglycoside Conjugates. Chemistry 2016; 22:5350-62. [DOI: 10.1002/chem.201505094] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2015] [Indexed: 12/22/2022]
Affiliation(s)
- Duc Duy Vo
- University of Nice Sophia Antipolis; Institute of Chemistry of Nice, UMR7272 CNRS, Parc Valrose; 06100 Nice France
| | - Thi Phuong Anh Tran
- University of Nice Sophia Antipolis; Institute of Chemistry of Nice, UMR7272 CNRS, Parc Valrose; 06100 Nice France
| | - Cathy Staedel
- University of Bordeaux; ARNA Laboratory; 33000 Bordeaux France
- INSERM, U869; 33000 Bordeaux France
| | - Rachid Benhida
- University of Nice Sophia Antipolis; Institute of Chemistry of Nice, UMR7272 CNRS, Parc Valrose; 06100 Nice France
| | - Fabien Darfeuille
- University of Bordeaux; ARNA Laboratory; 33000 Bordeaux France
- INSERM, U869; 33000 Bordeaux France
| | - Audrey Di Giorgio
- University of Nice Sophia Antipolis; Institute of Chemistry of Nice, UMR7272 CNRS, Parc Valrose; 06100 Nice France
| | - Maria Duca
- University of Nice Sophia Antipolis; Institute of Chemistry of Nice, UMR7272 CNRS, Parc Valrose; 06100 Nice France
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19
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Hesse M, Arenz C. A Rapid and Versatile Assay for Ago2-Mediated Cleavage by Using Branched Rolling Circle Amplification. Chembiochem 2016; 17:304-7. [DOI: 10.1002/cbic.201500537] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2015] [Indexed: 11/11/2022]
Affiliation(s)
- Marlen Hesse
- Institut für Chemie; Humboldt-Universität zu Berlin; Brook-Taylor-Str. 2 12489 Berlin Germany
| | - Christoph Arenz
- Institut für Chemie; Humboldt-Universität zu Berlin; Brook-Taylor-Str. 2 12489 Berlin Germany
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20
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Nahar S, Bose D, Pal S, Chakraborty TK, Maiti S. Cyclic Cationic Peptides Containing Sugar Amino Acids Selectively Distinguishes and Inhibits Maturation of Pre-miRNAs of the Same Family. Nucleic Acid Ther 2015; 25:323-9. [DOI: 10.1089/nat.2015.0554] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Affiliation(s)
- Smita Nahar
- Academy of Scientific and Innovative Research (AcSIR), New Delhi, India
- CSIR-Institute of Genomics and Integrative Biology, New Delhi, India
| | - Debojit Bose
- CSIR-Institute of Genomics and Integrative Biology, New Delhi, India
| | - Sudip Pal
- CSIR-Central Drug Research Institute, Lucknow, India
| | - Tushar Kanti Chakraborty
- CSIR-Central Drug Research Institute, Lucknow, India
- Department of Organic Chemistry, Indian Institute of Science, Bangalore, India
| | - Souvik Maiti
- Academy of Scientific and Innovative Research (AcSIR), New Delhi, India
- CSIR-Institute of Genomics and Integrative Biology, New Delhi, India
- CSIR-National Chemical Laboratory, Pune, India
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21
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Nahar S, Ranjan N, Ray A, Arya DP, Maiti S. Potent inhibition of miR-27a by neomycin-bisbenzimidazole conjugates. Chem Sci 2015; 6:5837-5846. [PMID: 29861909 PMCID: PMC5947510 DOI: 10.1039/c5sc01969a] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2015] [Accepted: 07/07/2015] [Indexed: 12/27/2022] Open
Abstract
miRNAs are important components of regulatory networks that control gene expression and have implications in various diseases including cancer. Targeting oncogenic miRNAs with small molecules is currently being explored to develop cancer therapeutics. Here, we report the development of dual binding neomycin-bisbenzimidazole conjugates that target oncogenic miR-27a with high affinity (Ka = 1.2 to 7.4 × 108 M-1). These conjugates bring significant reduction (∼65% at 5 μM) in mature miRNA levels and penetrate easily in the cells where they localise both in the cytoplasm and the nucleus. Cell cycle analysis showed significant increase in the G0/G1 phase (∼15%) and decrease in the S phase (∼7%) upon treatment with neomycin-bisbenzimidazole conjugates, suggesting inhibition of cell proliferation. Using the conjugation approach, we show that moderately binding ligands can be covalently combined into high affinity binders. This study also highlights the role of linker optimization in designing high affinity ligands for miR-27a targeting.
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Affiliation(s)
- Smita Nahar
- Academy of Scientific and Innovative Research (AcSIR) , Anusandhan Bhawan, 2 Rafi Marg , New Delhi-110001 , India
- CSIR-Institute of Genomics and Integrative Biology , Mathura Road , Delhi-110020 , India . ; ; Tel: +91-11-2766-6156
| | - Nihar Ranjan
- Department of Chemistry , Clemson University , Clemson , SC 29634 , USA
| | - Arjun Ray
- Academy of Scientific and Innovative Research (AcSIR) , Anusandhan Bhawan, 2 Rafi Marg , New Delhi-110001 , India
- CSIR-Institute of Genomics and Integrative Biology , Mathura Road , Delhi-110020 , India . ; ; Tel: +91-11-2766-6156
| | - Dev P Arya
- Department of Chemistry , Clemson University , Clemson , SC 29634 , USA
| | - Souvik Maiti
- Academy of Scientific and Innovative Research (AcSIR) , Anusandhan Bhawan, 2 Rafi Marg , New Delhi-110001 , India
- CSIR-Institute of Genomics and Integrative Biology , Mathura Road , Delhi-110020 , India . ; ; Tel: +91-11-2766-6156
- CSIR-National Chemical Laboratory , Dr. Homi Bhabha Road , Pune , 411008 , India . ;
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22
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miRNA therapeutics: a new class of drugs with potential therapeutic applications in the heart. Future Med Chem 2015; 7:1771-92. [PMID: 26399457 DOI: 10.4155/fmc.15.107] [Citation(s) in RCA: 177] [Impact Index Per Article: 19.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
Abstract
miRNAs are small non-coding RNAs (ncRNAs), which regulate gene expression. Here, the authors describe the contribution of miRNAs to cardiac biology and disease. They discuss various strategies for manipulating miRNA activity including antisense oligonucleotides (antimiRs, blockmiRs), mimics, miRNA sponges, Tough Decoys and miRNA mowers. They review developments in chemistries (e.g., locked nucleic acid) and modifications (sugar, 'ZEN', peptide nucleic acids) and miRNA delivery tools (viral vectors, liposomes, nanoparticles, pHLIP). They summarize potential miRNA therapeutic targets for heart disease based on preclinical studies. Finally, the authors review current progress of miRNA therapeutics in clinical development for HCV and cancer, and discuss challenges that will need to be overcome for similar therapies to enter the clinic for patients with cardiac disease.
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23
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Tran TPA, Vo DD, Di Giorgio A, Duca M. Ribosome-targeting antibiotics as inhibitors of oncogenic microRNAs biogenesis: Old scaffolds for new perspectives in RNA targeting. Bioorg Med Chem 2015; 23:5334-44. [PMID: 26264847 DOI: 10.1016/j.bmc.2015.07.062] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2015] [Accepted: 07/27/2015] [Indexed: 12/23/2022]
Abstract
MicroRNAs (miRNAs) are non-coding RNAs that regulate gene expression at the post-transcriptional level. It is now well established that the overexpression of some miRNAs (oncogenic miRNAs) is responsible for initiation and progression of human cancers and the discovery of new molecules able to interfere with their production and/or function represents one of the most important challenges of current medicinal chemistry of RNA ligands. In this work, we studied the ability of 18 different antibiotics, known as prokaryotic ribosomal RNA, to bind to oncogenic miRNA precursors (stem-loop structured pre-miRNAs) in order to inhibit miRNAs production. In vitro inhibition, binding constants, thermodynamic parameters and binding sites were investigated and highlighted that aminoglycosides and tetracyclines represent interesting pre-miRNA ligands with the ability to inhibit Dicer processing.
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Affiliation(s)
- Thi Phuong Anh Tran
- Institute of Chemistry of Nice, UMR7272 CNRS-University Nice Sophia Antipolis, Parc Valrose, 06100 Nice, France
| | - Duc Duy Vo
- Institute of Chemistry of Nice, UMR7272 CNRS-University Nice Sophia Antipolis, Parc Valrose, 06100 Nice, France
| | - Audrey Di Giorgio
- Institute of Chemistry of Nice, UMR7272 CNRS-University Nice Sophia Antipolis, Parc Valrose, 06100 Nice, France
| | - Maria Duca
- Institute of Chemistry of Nice, UMR7272 CNRS-University Nice Sophia Antipolis, Parc Valrose, 06100 Nice, France.
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24
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la Rosa AHD, Acker M, Swain S, Manoharan M. The role of epigenetics in kidney malignancies. Cent European J Urol 2015; 68:157-64. [PMID: 26251734 PMCID: PMC4526599 DOI: 10.5173/ceju.2015.453] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2014] [Revised: 02/03/2015] [Accepted: 02/20/2015] [Indexed: 01/18/2023] Open
Abstract
Introduction Renal cell carcinomas (RCC) are collectively the third most common type of genitourinary neoplasms, surpassed only by prostate and bladder cancer. Cure rates for renal cell carcinoma are related to tumor grade and stage; therefore, diagnostic methods for early detection and new therapeutic modalities are of paramount importance. Epigenetics can be defined as inherited modifications in gene expression that are not encoded in the DNA sequence itself. Epigenetics may play an important role in the pursuit of early diagnosis, accurate prognostication and identification of new therapeutic targets. Material and methods We used PubMed to conduct a comprehensive search of the English medical literature using search terms including epigenetics, DNA methylation, histone modification, microRNA regulation (miRNA) and RCC. In this review, we discuss the potential application of epigenetics in the diagnosis, prognosis and treatment of kidney cancer. Results During the last decade, many different types of epigenetic alterations of DNA have been found to be associated with malignant renal tumors. This has led to the research of the diagnostic and prognostic implications of these changes in renal malignancies as well as to the development of novel drugs to target these changes, with the aim of achieving a survival benefit. Conclusions Epigenetics has become a promising field in cancer research. The potential to achieve early detection and accurate prognostication in kidney cancer might be feasible through the application of epigenetics. The possibility to reverse these epigenetic changes with new therapeutic agents motivates researchers to continue pursuing better treatment options for kidney cancer and other malignancies.
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Affiliation(s)
| | - Matthew Acker
- Department of Urology, University of Miami Miller School of Medicine, Miami, FL, USA
| | - Sanjaya Swain
- Department of Urology, University of Miami Miller School of Medicine, Miami, FL, USA
| | - Murugesan Manoharan
- Department of Urology, University of Miami Miller School of Medicine, Miami, FL, USA
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25
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Hojjat-Farsangi M. Novel and emerging targeted-based cancer therapy agents and methods. Tumour Biol 2015; 36:543-56. [PMID: 25663495 DOI: 10.1007/s13277-015-3184-x] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2014] [Accepted: 01/27/2015] [Indexed: 02/06/2023] Open
Abstract
After several decades of uncovering the cancer features and following the improvement of therapeutic agents, however cancer remains as one of the major reasons of mortality. Chemotherapy is one of the main treatment options and has significantly improved the overall survival of cancer patients, but chemotherapeutic agents are highly toxic for normal cells. Therefore, there is a great unmet medical need to develop new therapeutic principles and agents. Targeted-based cancer therapy (TBCT) agents and methods have revolutionized the cancer treatment efficacy. Monoclonal antibodies (mAbs) and small molecule inhibitors (SMIs) are among the most effective agents of TBCT. These drugs have improved the prognosis and survival of cancer patients; however, the therapeutic resistance has subdued the effects. Several mechanisms lead to drug resistance such as mutations in the drug targets, activation of compensatory pathways, and intrinsic or acquired resistance of cancer stem cells. Therefore, new modalities, improving current generation of inhibitors and mAbs, and optimizing the combinational therapy regimens are necessary to decrease the current obstacles in front of TBCT. Moreover, the success of new TBCT agents such as mAbs, SMIs, and immunomodulatory agents has sparked further therapeutic modalities with novel targets to inhibit. Due to the lack of cumulative information describing different agents and methods of TBCT, this review focuses on the most important agents and methods of TBCT that are currently under investigation.
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Affiliation(s)
- Mohammad Hojjat-Farsangi
- Department of Oncology-Pathology, Immune and Gene therapy Lab, Cancer Center Karolinska (CCK), Karolinska University Hospital Solna and Karolinska Institute, SE-171 76, Stockholm, Sweden,
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