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  1. Article ; Online: Recombinant Technologies Facilitate Drug Metabolism, Pharmacokinetics, and General Biomedical Research.

    Cronin, Joseph M / Yu, Ai-Ming

    Drug metabolism and disposition: the biological fate of chemicals

    2023  Volume 51, Issue 6, Page(s) 685–699

    Abstract: The development of safe and effective medications requires a profound understanding of their pharmacokinetic (PK) and pharmacodynamic properties. PK studies have been built through investigation of enzymes and transporters that drive drug absorption, ... ...

    Abstract The development of safe and effective medications requires a profound understanding of their pharmacokinetic (PK) and pharmacodynamic properties. PK studies have been built through investigation of enzymes and transporters that drive drug absorption, distribution, metabolism, and excretion (ADME). Like many other disciplines, the study of ADME gene products and their functions has been revolutionized through the invention and widespread adoption of recombinant DNA technologies. Recombinant DNA technologies use expression vectors such as plasmids to achieve heterologous expression of a desired transgene in a specified host organism. This has enabled the purification of recombinant ADME gene products for functional and structural characterization, allowing investigators to elucidate their roles in drug metabolism and disposition. This strategy has also been used to offer recombinant or bioengineered RNA (BioRNA) agents to investigate the posttranscriptional regulation of ADME genes. Conventional research with small noncoding RNAs such as microRNAs (miRNAs) and small interfering RNAs has been dependent on synthetic RNA analogs that are known to carry a range of chemical modifications expected to improve stability and PK properties. Indeed, a novel transfer RNA fused pre-miRNA carrier-based bioengineering platform technology has been established to offer consistent and high-yield production of unparalleled BioRNA molecules from
    MeSH term(s) DNA, Recombinant ; MicroRNAs/genetics ; RNA, Small Interfering/genetics ; Metabolic Clearance Rate ; Technology ; Recombinant Proteins ; Pharmacokinetics
    Chemical Substances DNA, Recombinant ; MicroRNAs ; RNA, Small Interfering ; Recombinant Proteins
    Language English
    Publishing date 2023-03-22
    Publishing country United States
    Document type Journal Article ; Review ; Research Support, N.I.H., Extramural
    ZDB-ID 186795-7
    ISSN 1521-009X ; 0090-9556
    ISSN (online) 1521-009X
    ISSN 0090-9556
    DOI 10.1124/dmd.122.001008
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  2. Article ; Online: Recent Advances in Novel Recombinant RNAs for Studying Post-transcriptional Gene Regulation in Drug Metabolism and Disposition.

    Tu, Mei-Juan / Yu, Ai-Ming

    Current drug metabolism

    2023  Volume 24, Issue 3, Page(s) 175–189

    Abstract: Drug-metabolizing enzymes and transporters are major determinants of the absorption, disposition, metabolism, and excretion (ADME) of drugs, and changes in ADME gene expression or function may alter the pharmacokinetics/ pharmacodynamics (PK/PD) and ... ...

    Abstract Drug-metabolizing enzymes and transporters are major determinants of the absorption, disposition, metabolism, and excretion (ADME) of drugs, and changes in ADME gene expression or function may alter the pharmacokinetics/ pharmacodynamics (PK/PD) and further influence drug safety and therapeutic outcomes. ADME gene functions are controlled by diverse factors, such as genetic polymorphism, transcriptional regulation, and coadministered medications. MicroRNAs (miRNAs) are a superfamily of regulatory small noncoding RNAs that are transcribed from the genome to regulate target gene expression at the post-transcriptional level. The roles of miRNAs in controlling ADME gene expression have been demonstrated, and such miRNAs may consequently influence cellular drug metabolism and disposition capacity. Several types of miRNA mimics and small interfering RNA (siRNA) reagents have been developed and widely used for ADME research. In this review article, we first provide a brief introduction to the mechanistic actions of miRNAs in post-transcriptional gene regulation of drug-metabolizing enzymes, transporters, and transcription factors. After summarizing conventional small RNA production methods, we highlight the latest advances in novel recombinant RNA technologies and applications of the resultant bioengineered RNA (BioRNA) agents to ADME studies. BioRNAs produced in living cells are not only powerful tools for general biological and biomedical research but also potential therapeutic agents amenable to clinical investigations.
    MeSH term(s) Humans ; Gene Expression Regulation ; MicroRNAs/genetics ; Inactivation, Metabolic
    Chemical Substances RNA, recombinant ; MicroRNAs
    Language English
    Publishing date 2023-05-12
    Publishing country Netherlands
    Document type Review ; Journal Article
    ZDB-ID 2064815-7
    ISSN 1875-5453 ; 1389-2002
    ISSN (online) 1875-5453
    ISSN 1389-2002
    DOI 10.2174/1389200224666230425232433
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  3. Article ; Online: MicroRNAs in the Regulation of Solute Carrier Proteins Behind Xenobiotic and Nutrient Transport in Cells

    Colleen Yi / Ai-Ming Yu

    Frontiers in Molecular Biosciences, Vol

    2022  Volume 9

    Abstract: Altered metabolism, such as aerobic glycolysis or the Warburg effect, has been recognized as characteristics of tumor cells for almost a century. Since then, there is accumulating evidence to demonstrate the metabolic reprogramming of tumor cells, ... ...

    Abstract Altered metabolism, such as aerobic glycolysis or the Warburg effect, has been recognized as characteristics of tumor cells for almost a century. Since then, there is accumulating evidence to demonstrate the metabolic reprogramming of tumor cells, addiction to excessive uptake and metabolism of key nutrients, to support rapid proliferation and invasion under tumor microenvironment. The solute carrier (SLC) superfamily transporters are responsible for influx or efflux of a wide variety of xenobiotic and metabolites that are needed for the cells to function, as well as some medications. To meet the increased demand for nutrients and energy, SLC transporters are frequently dysregulated in cancer cells. The SLCs responsible for the transport of key nutrients for cancer metabolism and energetics, such as glucose and amino acids, are of particular interest for their roles in tumor progression and metastasis. Meanwhile, rewired metabolism is accompanied by the dysregulation of microRNAs (miRNAs or miRs) that are small, noncoding RNAs governing posttranscriptional gene regulation. Studies have shown that many miRNAs directly regulate the expression of specific SLC transporters in normal or diseased cells. Changes of SLC transporter expression and function can subsequently alter the uptake of nutrients or therapeutics. Given the important role for miRNAs in regulating disease progression, there is growing interest in developing miRNA-based therapies, beyond serving as potential diagnostic or prognostic biomarkers. In this article, we discuss how miRNAs regulate the expression of SLC transporters and highlight potential influence on the supply of essential nutrients for cell metabolism and drug exposure toward desired efficacy.
    Keywords microRNA ; nutrient ; xenobiotic ; therapy ; cancer ; solute carrier ; Biology (General) ; QH301-705.5
    Subject code 570
    Language English
    Publishing date 2022-06-01T00:00:00Z
    Publisher Frontiers Media S.A.
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  4. Article: MicroRNAs in the Regulation of Solute Carrier Proteins Behind Xenobiotic and Nutrient Transport in Cells.

    Yi, Colleen / Yu, Ai-Ming

    Frontiers in molecular biosciences

    2022  Volume 9, Page(s) 893846

    Abstract: Altered metabolism, such as aerobic glycolysis or the Warburg effect, has been recognized as characteristics of tumor cells for almost a century. Since then, there is accumulating evidence to demonstrate the metabolic reprogramming of tumor cells, ... ...

    Abstract Altered metabolism, such as aerobic glycolysis or the Warburg effect, has been recognized as characteristics of tumor cells for almost a century. Since then, there is accumulating evidence to demonstrate the metabolic reprogramming of tumor cells, addiction to excessive uptake and metabolism of key nutrients, to support rapid proliferation and invasion under tumor microenvironment. The solute carrier (SLC) superfamily transporters are responsible for influx or efflux of a wide variety of xenobiotic and metabolites that are needed for the cells to function, as well as some medications. To meet the increased demand for nutrients and energy, SLC transporters are frequently dysregulated in cancer cells. The SLCs responsible for the transport of key nutrients for cancer metabolism and energetics, such as glucose and amino acids, are of particular interest for their roles in tumor progression and metastasis. Meanwhile, rewired metabolism is accompanied by the dysregulation of microRNAs (miRNAs or miRs) that are small, noncoding RNAs governing posttranscriptional gene regulation. Studies have shown that many miRNAs directly regulate the expression of specific SLC transporters in normal or diseased cells. Changes of SLC transporter expression and function can subsequently alter the uptake of nutrients or therapeutics. Given the important role for miRNAs in regulating disease progression, there is growing interest in developing miRNA-based therapies, beyond serving as potential diagnostic or prognostic biomarkers. In this article, we discuss how miRNAs regulate the expression of SLC transporters and highlight potential influence on the supply of essential nutrients for cell metabolism and drug exposure toward desired efficacy.
    Language English
    Publishing date 2022-06-09
    Publishing country Switzerland
    Document type Journal Article ; Review
    ZDB-ID 2814330-9
    ISSN 2296-889X
    ISSN 2296-889X
    DOI 10.3389/fmolb.2022.893846
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  5. Article ; Online: RNAi-Based Therapeutics and Novel RNA Bioengineering Technologies.

    Traber, Gavin M / Yu, Ai-Ming

    The Journal of pharmacology and experimental therapeutics

    2022  Volume 384, Issue 1, Page(s) 133–154

    Abstract: RNA interference (RNAi) provides researchers with a versatile means to modulate target gene expression. The major forms of RNAi molecules, genome-derived microRNAs (miRNAs) and exogenous small interfering RNAs (siRNAs), converge into RNA-induced ... ...

    Abstract RNA interference (RNAi) provides researchers with a versatile means to modulate target gene expression. The major forms of RNAi molecules, genome-derived microRNAs (miRNAs) and exogenous small interfering RNAs (siRNAs), converge into RNA-induced silencing complexes to achieve posttranscriptional gene regulation. RNAi has proven to be an adaptable and powerful therapeutic strategy where advancements in chemistry and pharmaceutics continue to bring RNAi-based drugs into the clinic. With four siRNA medications already approved by the US Food and Drug Administration (FDA), several RNAi-based therapeutics continue to advance to clinical trials with functions that closely resemble their endogenous counterparts. Although intended to enhance stability and improve efficacy, chemical modifications may increase risk of off-target effects by altering RNA structure, folding, and biologic activity away from their natural equivalents. Novel technologies in development today seek to use intact cells to yield true biologic RNAi agents that better represent the structures, stabilities, activities, and safety profiles of natural RNA molecules. In this review, we provide an examination of the mechanisms of action of endogenous miRNAs and exogenous siRNAs, the physiologic and pharmacokinetic barriers to therapeutic RNA delivery, and a summary of the chemical modifications and delivery platforms in use. We overview the pharmacology of the four FDA-approved siRNA medications (patisiran, givosiran, lumasiran, and inclisiran) as well as five siRNAs and several miRNA-based therapeutics currently in clinical trials. Furthermore, we discuss the direct expression and stable carrier-based, in vivo production of novel biologic RNAi agents for research and development. SIGNIFICANCE STATEMENT: In our review, we summarize the major concepts of RNA interference (RNAi), molecular mechanisms, and current state and challenges of RNAi drug development. We focus our discussion on the pharmacology of US Food and Drug Administration-approved RNAi medications and those siRNAs and miRNA-based therapeutics that entered the clinical investigations. Novel approaches to producing new true biological RNAi molecules for research and development are highlighted.
    MeSH term(s) RNA Interference ; RNAi Therapeutics ; RNA, Small Interfering/genetics ; RNA, Small Interfering/therapeutic use ; MicroRNAs/genetics ; MicroRNAs/therapeutic use ; MicroRNAs/metabolism ; Bioengineering ; Biological Products
    Chemical Substances RNA, Small Interfering ; MicroRNAs ; Biological Products
    Language English
    Publishing date 2022-06-09
    Publishing country United States
    Document type Journal Article ; Review ; Research Support, N.I.H., Extramural
    ZDB-ID 3106-9
    ISSN 1521-0103 ; 0022-3565
    ISSN (online) 1521-0103
    ISSN 0022-3565
    DOI 10.1124/jpet.122.001234
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  6. Article ; Online: RNA therapeutics: From biochemical pharmacology to technology development and clinical applications.

    Ning, Baitang / Yu, Ai-Ming

    Biochemical pharmacology

    2021  Volume 189, Page(s) 114567

    MeSH term(s) Industrial Development ; RNA/genetics
    Chemical Substances RNA (63231-63-0)
    Language English
    Publishing date 2021-04-16
    Publishing country England
    Document type Editorial ; Comment
    ZDB-ID 208787-x
    ISSN 1873-2968 ; 0006-2952
    ISSN (online) 1873-2968
    ISSN 0006-2952
    DOI 10.1016/j.bcp.2021.114567
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  7. Article: Erratum: Author correction to 'Bioengineered miR-124-3p prodrug selectively alters the proteome of human carcinoma cells to control multiple cellular components and lung metastasis

    Deng, Linglong / Petrek, Hannah / Tu, Mei-Juan / Batra, Neelu / Yu, Ai-Xi / Yu, Ai-Ming

    Acta pharmaceutica Sinica. B

    2023  Volume 13, Issue 8, Page(s) 3577–3578

    Abstract: This corrects the article DOI: 10.1016/j.apsb.2021.07.027.]. ...

    Abstract [This corrects the article DOI: 10.1016/j.apsb.2021.07.027.].
    Language English
    Publishing date 2023-07-05
    Publishing country Netherlands
    Document type Published Erratum
    ISSN 2211-3835
    ISSN 2211-3835
    DOI 10.1016/j.apsb.2023.07.002
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  8. Article ; Online: Deliver the promise: RNAs as a new class of molecular entities for therapy and vaccination.

    Yu, Ai-Ming / Tu, Mei-Juan

    Pharmacology & therapeutics

    2021  Volume 230, Page(s) 107967

    Abstract: The concepts of developing RNAs as new molecular entities for therapies have arisen again and again since the discoveries of antisense RNAs, direct RNA-protein interactions, functional noncoding RNAs, and RNA-directed gene editing. The feasibility was ... ...

    Abstract The concepts of developing RNAs as new molecular entities for therapies have arisen again and again since the discoveries of antisense RNAs, direct RNA-protein interactions, functional noncoding RNAs, and RNA-directed gene editing. The feasibility was demonstrated with the development and utilization of synthetic RNA agents to selectively control target gene expression, modulate protein functions or alter the genome to manage diseases. Rather, RNAs are labile to degradation and cannot cross cell membrane barriers, making it hard to develop RNA medications. With the development of viable RNA technologies, such as chemistry and pharmaceutics, eight antisense oligonucleotides (ASOs) (fomivirsen, mipomersen, eteplirsen, nusinersen, inotersen, golodirsen, viltolarsen and casimersen), one aptamer (pegaptanib), and three small interfering RNAs (siRNAs) (patisiran, givosiran and lumasiran) have been approved by the United States Food and Drug Administration (FDA) for therapies, and two mRNA vaccines (BNT162b2 and mRNA-1273) under Emergency Use Authorization for the prevention of COVID-19. Therefore, RNAs have become a great addition to small molecules, proteins/antibodies, and cell-based modalities to improve the public health. In this article, we first summarize the general characteristics of therapeutic RNA agents, including chemistry, common delivery strategies, mechanisms of actions, and safety. By overviewing individual RNA medications and vaccines approved by the FDA and some agents under development, we illustrate the unique compositions and pharmacological actions of RNA products. A new era of RNA research and development will likely lead to commercialization of more RNA agents for medical use, expanding the range of therapeutic targets and increasing the diversity of molecular modalities.
    MeSH term(s) BNT162 Vaccine ; COVID-19 ; Humans ; Oligonucleotides ; RNA, Small Interfering ; SARS-CoV-2 ; United States ; Vaccination
    Chemical Substances Oligonucleotides ; RNA, Small Interfering ; casimersen ; BNT162 Vaccine (N38TVC63NU) ; lumasiran (RZT8C352O1)
    Language English
    Publishing date 2021-08-14
    Publishing country England
    Document type Journal Article ; Research Support, N.I.H., Extramural ; Review
    ZDB-ID 194735-7
    ISSN 1879-016X ; 0163-7258
    ISSN (online) 1879-016X
    ISSN 0163-7258
    DOI 10.1016/j.pharmthera.2021.107967
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  9. Article ; Online: Editorial

    Ye Tian / Ai-Ming Yu / Chong Yin / Airong Qian

    Frontiers in Cell and Developmental Biology, Vol

    Post-transcriptional regulation and its misregulation: From molecular basis to translational medicine

    2022  Volume 10

    Keywords post-transcriptional regulation ; non-coding RNA ; lncRNA ; microRNA ; tsRNA ; diseases ; Biology (General) ; QH301-705.5
    Language English
    Publishing date 2022-11-01T00:00:00Z
    Publisher Frontiers Media S.A.
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  10. Article ; Online: Advanced knowledge in drug metabolism and pharmacokinetics

    Ai-Ming Yu

    Acta Pharmaceutica Sinica B, Vol 6, Iss 5, Pp 361-

    2016  Volume 362

    Keywords Medicine ; R ; Therapeutics. Pharmacology ; RM1-950
    Language English
    Publishing date 2016-09-01T00:00:00Z
    Publisher Elsevier
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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