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  1. Article ; Online: Fluorescence-Based Peptidolytic Assay for High-Throughput Screening of MMP14 Inhibitors.

    Lee, Hyun / Ibrahimi, Lucas / Han, Kyu-Yeon

    Methods in molecular biology (Clifton, N.J.)

    2023  Volume 2747, Page(s) 229–242

    Abstract: The membrane-bound matrix metalloproteinase 14 (MMP14, also known as MT1-MMP) plays important roles in the remodeling of the extracellular matrix during various cellular processes such as cancer metastasis, angiogenesis, and wound healing through its ... ...

    Abstract The membrane-bound matrix metalloproteinase 14 (MMP14, also known as MT1-MMP) plays important roles in the remodeling of the extracellular matrix during various cellular processes such as cancer metastasis, angiogenesis, and wound healing through its proteolytic activity. There are no known MMP14-specific inhibitors to date, and hence identification of MMP14-specific inhibitors will be beneficial for finding potential therapeutics for various diseases, including cancer and inflammation. High-throughput screening (HTS) assays have become a common way to search for new small compounds, peptides, and natural products. Enzymatic assays are highly amenable to HTS because most enzyme activities are quantifiable with the effect of many small molecules of interest on a specific target enzyme. Here, we describe a fluorescence-based enzymatic assay that can be applied as a large-scale HTS and a follow-up enzyme kinetics assay to find MMP14-specific inhibitors.
    MeSH term(s) Humans ; Matrix Metalloproteinase 14/chemistry ; High-Throughput Screening Assays ; Peptides ; Neoplasms ; Wound Healing
    Chemical Substances Matrix Metalloproteinase 14 (EC 3.4.24.80) ; Peptides ; MMP14 protein, human (EC 3.4.24.80)
    Language English
    Publishing date 2023-12-01
    Publishing country United States
    Document type Journal Article
    ISSN 1940-6029
    ISSN (online) 1940-6029
    DOI 10.1007/978-1-0716-3589-6_18
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  2. Article ; Online: Chlorine-Induced Toxicity on Murine Cornea: Exploring the Potential Therapeutic Role of Antioxidants.

    An, Seungwon / Anwar, Khandaker / Ashraf, Mohammadjavad / Han, Kyu-Yeon / Djalilian, Ali R

    Cells

    2024  Volume 13, Issue 5

    Abstract: Chlorine ( ... ...

    Abstract Chlorine (Cl
    MeSH term(s) Humans ; Animals ; Mice ; Antioxidants/metabolism ; Chlorine/toxicity ; Reactive Oxygen Species/metabolism ; Cornea/metabolism ; Corneal Injuries ; Fluorescein/pharmacology
    Chemical Substances Antioxidants ; Chlorine (4R7X1O2820) ; Reactive Oxygen Species ; Fluorescein (TPY09G7XIR)
    Language English
    Publishing date 2024-03-05
    Publishing country Switzerland
    Document type Journal Article
    ZDB-ID 2661518-6
    ISSN 2073-4409 ; 2073-4409
    ISSN (online) 2073-4409
    ISSN 2073-4409
    DOI 10.3390/cells13050458
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  3. Article ; Online: The Role of Membrane-Type 1 Matrix Metalloproteinase-Substrate Interactions in Pathogenesis.

    Lee, Hyun / Ibrahimi, Lucas / Azar, Dimitri T / Han, Kyu-Yeon

    International journal of molecular sciences

    2023  Volume 24, Issue 3

    Abstract: A protease is an enzyme with a proteolytic activity that facilitates the digestion of its substrates. Membrane-type I matrix metalloproteinase (MT1-MMP), a member of the broader matrix metalloproteinases (MMP) family, is involved in the regulation of ... ...

    Abstract A protease is an enzyme with a proteolytic activity that facilitates the digestion of its substrates. Membrane-type I matrix metalloproteinase (MT1-MMP), a member of the broader matrix metalloproteinases (MMP) family, is involved in the regulation of diverse cellular activities. MT1-MMP is a very well-known enzyme as an activator of pro-MMP-2 and two collagenases, MMP-8 and MMP-13, all of which are essential for cell migration. As an anchored membrane enzyme, MT1-MMP has the ability to interact with a diverse group of molecules, including proteins that are not part of the extracellular matrix (ECM). Therefore, MT1-MMP can regulate various cellular activities not only by changing the extra-cellular environment but also by regulating cell signaling. The presence of both intracellular and extra-cellular portions of MT1-MMP can allow it to interact with proteins on both sides of the cell membrane. Here, we reviewed the MT1-MMP substrates involved in disease pathogenesis.
    MeSH term(s) Collagenases ; Matrix Metalloproteinase 14 ; Matrix Metalloproteinases ; Matrix Metalloproteinases, Membrane-Associated ; Metalloendopeptidases/metabolism ; Proteins ; Substrate Specificity
    Chemical Substances Collagenases (EC 3.4.24.-) ; Matrix Metalloproteinase 14 (EC 3.4.24.80) ; Matrix Metalloproteinases (EC 3.4.24.-) ; Matrix Metalloproteinases, Membrane-Associated (EC 3.4.24.-) ; Metalloendopeptidases (EC 3.4.24.-) ; Proteins
    Language English
    Publishing date 2023-01-22
    Publishing country Switzerland
    Document type Journal Article ; Review
    ZDB-ID 2019364-6
    ISSN 1422-0067 ; 1422-0067 ; 1661-6596
    ISSN (online) 1422-0067
    ISSN 1422-0067 ; 1661-6596
    DOI 10.3390/ijms24032183
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  4. Article: Chemical constituents of Entandrophragma angolense and their anti-inflammatory activity

    Youn, Isoo / Han, Kyu-Yeon / Gurgul, Aleksandra / Wu, Zhenlong / Lee, Hyun / Che, Chun-Tao

    Phytochemistry. 2022 Sept., v. 201

    2022  

    Abstract: From the stem bark of Entandrophragma angolense, six undescribed compounds were isolated, including seco-tirucallane type triterpenoids, limonoids, and a catechin glucoside, along with nineteen known structures. All structures were determined by ... ...

    Abstract From the stem bark of Entandrophragma angolense, six undescribed compounds were isolated, including seco-tirucallane type triterpenoids, limonoids, and a catechin glucoside, along with nineteen known structures. All structures were determined by interpretation of spectroscopic and HRMS data, and absolute configuration was confirmed with the aid of electronic circular dichroism. The isolated compounds were tested for LPS-induced NO inhibition in RAW 264.7 macrophages and EC₅₀ values for moluccensin O and (−)-catechin were 81 μM and 137 μM, respectively.
    Keywords Entandrophragma angolense ; anti-inflammatory activity ; bark ; catechin ; circular dichroism spectroscopy ; glucosides ; limonoids ; macrophages
    Language English
    Dates of publication 2022-09
    Publishing place Elsevier Ltd
    Document type Article
    ZDB-ID 208884-8
    ISSN 1873-3700 ; 0031-9422
    ISSN (online) 1873-3700
    ISSN 0031-9422
    DOI 10.1016/j.phytochem.2022.113276
    Database NAL-Catalogue (AGRICOLA)

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  5. Article ; Online: Proteomics-Based Characterization of the Effects of MMP14 on the Protein Content of Exosomes from Corneal Fibroblasts.

    Han, Kyu-Yeon / Chang, Jin-Hong / Azar, Dimitri T

    Protein and peptide letters

    2020  Volume 27, Issue 10, Page(s) 979–988

    Abstract: Background: Exosomes secreted by corneal fibroblasts contain matrix metalloproteinase (MMP) 14, which is known to influence pro-MMP2 accumulation on exosomes. Accordingly, we hypothesized that the enzymatic activity of MMP14 may alter the protein ... ...

    Abstract Background: Exosomes secreted by corneal fibroblasts contain matrix metalloproteinase (MMP) 14, which is known to influence pro-MMP2 accumulation on exosomes. Accordingly, we hypothesized that the enzymatic activity of MMP14 may alter the protein content of corneal fibroblast- secreted exosomes.
    Objective: The aim of this study was to investigate the effects of MMP14 on the composition and biological activity of corneal fibroblast-derived exosomes.
    Methods: Knock out of the catalytic domain (ΔExon4) of MMP14 in corneal fibroblasts was used to determine the effect of MMP14 expression on the characteristics of fibroblast-secreted exosomes. The amount of secreted proteins and their size distribution were measured using Nano Tracking Analysis. Proteins within exosomes from wild-type (WT) and ΔExon4-deficient fibroblasts were identified by liquid chromatography-tandem mass spectrometry (MS/MS) proteomics analysis. The proteolytic effects of MMP14 were evaluated in vitro via MS identification of eliminated proteins. The biological functions of MMP14-carrying exosomes were investigated via fusion to endothelial cells and flow cytometric assays.
    Results: Exosomes isolated from WT and ΔExon4-deficient fibroblasts exhibited similar size distributions and morphologies, although WT fibroblasts secreted a greater amount of exosomes. The protein content, however, was higher in ΔExon4-deficient fibroblast-derived exosomes than in WT fibroblast-derived exosomes. Proteomics analysis revealed that WT-derived exosomes included proteins that regulated cell migration, and ΔExon4 fibroblast-derived exosomes contained additional proteins that were cleaved by MMP14.
    Conclusion: Our findings suggest that MMP14 expression influences the protein composition of exosomes secreted by corneal fibroblasts, and through those biological components, MMP14 in corneal fibroblasts derived-exosomes may regulate corneal angiogenesis.
    MeSH term(s) Animals ; Cornea/metabolism ; Exosomes/metabolism ; Fibroblasts/metabolism ; Matrix Metalloproteinase 14/metabolism ; Mice ; Protein Domains ; Proteomics
    Chemical Substances Mmp14 protein, mouse ; Matrix Metalloproteinase 14 (EC 3.4.24.80)
    Language English
    Publishing date 2020-04-08
    Publishing country Netherlands
    Document type Journal Article
    ZDB-ID 1280776-x
    ISSN 1875-5305 ; 0929-8665
    ISSN (online) 1875-5305
    ISSN 0929-8665
    DOI 10.2174/0929866527666200408142827
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  6. Article ; Online: Chemical constituents of Entandrophragma angolense and their anti-inflammatory activity.

    Youn, Isoo / Han, Kyu-Yeon / Gurgul, Aleksandra / Wu, Zhenlong / Lee, Hyun / Che, Chun-Tao

    Phytochemistry

    2022  Volume 201, Page(s) 113276

    Abstract: From the stem bark of Entandrophragma angolense, six undescribed compounds were isolated, including seco-tirucallane type triterpenoids, limonoids, and a catechin glucoside, along with nineteen known structures. All structures were determined by ... ...

    Abstract From the stem bark of Entandrophragma angolense, six undescribed compounds were isolated, including seco-tirucallane type triterpenoids, limonoids, and a catechin glucoside, along with nineteen known structures. All structures were determined by interpretation of spectroscopic and HRMS data, and absolute configuration was confirmed with the aid of electronic circular dichroism. The isolated compounds were tested for LPS-induced NO inhibition in RAW 264.7 macrophages and EC
    MeSH term(s) Anti-Inflammatory Agents/pharmacology ; Catechin ; Limonins/chemistry ; Limonins/pharmacology ; Meliaceae/chemistry ; Molecular Structure
    Chemical Substances Anti-Inflammatory Agents ; Limonins ; Catechin (8R1V1STN48)
    Language English
    Publishing date 2022-06-15
    Publishing country England
    Document type Journal Article
    ZDB-ID 208884-8
    ISSN 1873-3700 ; 0031-9422
    ISSN (online) 1873-3700
    ISSN 0031-9422
    DOI 10.1016/j.phytochem.2022.113276
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  7. Article ; Online: Polyoxygenated cyclohexene derivatives and other constituents of Uvaria rufa stem.

    Gurgul, Aleksandra / Wu, Zhenlong / Han, Kyu-Yeon / Shetye, Gauri / Sydara, Kongmany / Souliya, Onevilay / Johnson, Jeremy J / Che, Chun-Tao

    Phytochemistry

    2023  Volume 216, Page(s) 113884

    Abstract: Six undescribed compounds, uvarirufols D and E, (+)-uvarigranol B, (-)-uvarigranol E, 6-acetoxy-5-hydroxy-7-methoxyflavanone and cherrevenaphthalene D, along with twelve known compounds, including polyoxygenated cyclohexenes, flavonoids, and lignans, ... ...

    Abstract Six undescribed compounds, uvarirufols D and E, (+)-uvarigranol B, (-)-uvarigranol E, 6-acetoxy-5-hydroxy-7-methoxyflavanone and cherrevenaphthalene D, along with twelve known compounds, including polyoxygenated cyclohexenes, flavonoids, and lignans, were isolated from the methanol extract of Uvaria rufa stems. Their structures were elucidated by spectroscopic analyses and the absolute configurations were determined using electronic circular dichroism. Several isolates were evaluated for cytotoxic, antitubercular and anti-inflammatory potentials. (-)-6-Acetylzeylenol showed moderate inhibitory activity against Mycobacterium tuberculosis, with MIC value of 47.10 μg/mL. Cherrevenaphthalene D exhibited weak antimycobacterial activity and potent inhibitory effect on lipopolysaccharide-induced nitric oxide (NO) production in RAW 264.7 cells (EC
    MeSH term(s) Uvaria/chemistry ; Molecular Structure ; Cyclohexenes/pharmacology ; Cyclohexenes/chemistry ; Lignans/pharmacology
    Chemical Substances cyclohexene (12L0P8F7GN) ; Cyclohexenes ; Lignans
    Language English
    Publishing date 2023-10-07
    Publishing country England
    Document type Journal Article
    ZDB-ID 208884-8
    ISSN 1873-3700 ; 0031-9422
    ISSN (online) 1873-3700
    ISSN 0031-9422
    DOI 10.1016/j.phytochem.2023.113884
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  8. Article ; Online: Identification of small molecule inhibitors against MMP-14 via High-Throughput screening.

    Lee, Hyun / Youn, Isoo / Demissie, Robel / Vaid, Tasneem M / Che, Chun-Tao / Azar, Dimitri T / Han, Kyu-Yeon

    Bioorganic & medicinal chemistry

    2023  Volume 85, Page(s) 117289

    Abstract: Matrix metalloproteinases (MMPs) are involved in various cellular events in physiology and pathophysiology through endopeptidases activity. The expression levels and activities of most MMPs remain minimal in the normal conditions, whereas some MMPs are ... ...

    Abstract Matrix metalloproteinases (MMPs) are involved in various cellular events in physiology and pathophysiology through endopeptidases activity. The expression levels and activities of most MMPs remain minimal in the normal conditions, whereas some MMPs are significantly activated in pathological conditions such as cancer and neovascularization. Hence, MMPs are considered as both diagnostic markers and potential targets for therapeutic agents. Twenty-three known human MMPs share a similar active site structure with a zinc-binding motif, resulting in lack of specificity. Therefore, the enhancement of target specificity is a primary goal for the development of specific MMP inhibitors. MMP-14 regulates VEGFA/VEGFR2-system through cleavage of the non-functional VEGFR1 in vascular angiogenesis. In this study, we developed a fluorescence-based enzymatic assay using a specific MMP-14 substrate generated from VEGFR1 cleavage site. This well optimized assay was used as a primary screen method to identify MMP-14 specific inhibitors from 1,200 Prestwick FDA-approved drug library. Of ten initial hits, two compounds showed IC
    MeSH term(s) Humans ; High-Throughput Screening Assays ; Matrix Metalloproteinase 14 ; Clioquinol ; Matrix Metalloproteinase Inhibitors/chemistry ; Matrix Metalloproteinases/metabolism
    Chemical Substances Matrix Metalloproteinase 14 (EC 3.4.24.80) ; Clioquinol (7BHQ856EJ5) ; Matrix Metalloproteinase Inhibitors ; Matrix Metalloproteinases (EC 3.4.24.-)
    Language English
    Publishing date 2023-04-17
    Publishing country England
    Document type Journal Article ; Research Support, N.I.H., Extramural ; Research Support, Non-U.S. Gov't
    ZDB-ID 1161284-8
    ISSN 1464-3391 ; 0968-0896
    ISSN (online) 1464-3391
    ISSN 0968-0896
    DOI 10.1016/j.bmc.2023.117289
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  9. Article ; Online: MMP14-Containing Exosomes Cleave VEGFR1 and Promote VEGFA-Induced Migration and Proliferation of Vascular Endothelial Cells.

    Han, Kyu-Yeon / Chang, Jin-Hong / Azar, Dimitri T

    Investigative ophthalmology & visual science

    2019  Volume 60, Issue 6, Page(s) 2321–2329

    Abstract: Purpose: Investigate the impact matrix metalloproteinase 14 (MMP14) delivered via exosomes produced by corneal fibroblasts on vascular endothelial growth factor receptor 1 (VEGFR1) cleavage on endothelial cells, and other key processes of angiogenesis.!# ...

    Abstract Purpose: Investigate the impact matrix metalloproteinase 14 (MMP14) delivered via exosomes produced by corneal fibroblasts on vascular endothelial growth factor receptor 1 (VEGFR1) cleavage on endothelial cells, and other key processes of angiogenesis.
    Methods: Proteolysis of VEGFR1 and R2 by the catalytic domain of MMP14 was investigated via immunocytochemistry with anti-VEGFR1, anti-VEGFR2, and anti-MMP14 antibodies. Exosomes were isolated via precipitation and serial ultracentrifugation from wild-type (WT) and MMP14 exon4-deficient corneal fibroblasts. Transmission electron microscopy and nanotracking analysis were used to characterize the isolated exosomes. The presence of MMP14 in exosomes from WT fibroblasts was confirmed by Western blotting. VEGFR1 cleavage upon treatment with WT-derived exosomes, Δexon4-derived exosomes, or the pan-MMP inhibitor GM60001 was examined via in vitro proteolysis analysis using recombinant mouse (rm) VEGFR1/R2. Endothelial cell migration and proliferation were investigated using a Boyden chamber assay and BrdU incorporation, respectively.
    Results: WT-derived exosomes specifically cleaved rmVEGFR1 in vitro, whereas Δexon4-derived exosomes did not. Treatment with the pan-MMP inhibitor GM6001 effectively inhibited VEGFR1 cleavage by WT-derived exosomes, confirming the role of MMP14 in this cleavage. WT-derived exosomes induced greater endothelial cell migration (P < 0.01) and proliferation (P < 0.5) compared to Δexon4-derived exosomes.
    Conclusions: MMP14-containing exosomes may be involved in the regulation of corneal neovascularization through degradation of VEGFR1 and VEGFA-induced endothelial cell proliferation and migration.
    MeSH term(s) Cell Movement/drug effects ; Cell Proliferation/drug effects ; Cornea/cytology ; Endothelial Cells/metabolism ; Exosomes/physiology ; Humans ; Immunohistochemistry ; Matrix Metalloproteinase 14/pharmacology ; Vascular Endothelial Growth Factor A/metabolism ; Vascular Endothelial Growth Factor Receptor-1/metabolism
    Chemical Substances Vascular Endothelial Growth Factor A ; Vascular Endothelial Growth Factor Receptor-1 (EC 2.7.10.1) ; MMP14 protein, human (EC 3.4.24.80) ; Matrix Metalloproteinase 14 (EC 3.4.24.80)
    Language English
    Publishing date 2019-05-21
    Publishing country United States
    Document type Journal Article ; Research Support, N.I.H., Extramural ; Research Support, Non-U.S. Gov't
    ZDB-ID 391794-0
    ISSN 1552-5783 ; 0146-0404
    ISSN (online) 1552-5783
    ISSN 0146-0404
    DOI 10.1167/iovs.18-26277
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  10. Article ; Online: MMP14 Regulates VEGFR3 Expression on Corneal Epithelial Cells.

    Han, Kyu-Yeon / Chang, Jin-Hong / Azar, Dimitri T

    Protein and peptide letters

    2016  Volume 23, Issue 12, Page(s) 1095–1102

    Abstract: Vascular endothelial growth factor receptor 3 (VEGFR3) regulates the growth and differentiation of blood and lymphatic vessels. To determine whether matrix metalloproteinase 14 (MMP14) modulates VEGFR3 expression in the corneal epithelium to influence ... ...

    Abstract Vascular endothelial growth factor receptor 3 (VEGFR3) regulates the growth and differentiation of blood and lymphatic vessels. To determine whether matrix metalloproteinase 14 (MMP14) modulates VEGFR3 expression in the corneal epithelium to influence the avascularity of the cornea, VEGFR3 expression was compared between wild-type and MMP14-deficient (MMP14 Δexon4) corneal epithelial cells. Western blot analysis showed that VEGFR3 protein expression was higher on MMP14 Δexon4 corneal epithelial cells than on wild-type cells, and quantitative RT-PCR analysis showed that VEGFR3 gene expression was highly induced in MMP14 Δexon4 corneal epithelial cells but not in wild-type corneal epithelial cells or wild-type and MMP14 Δexon4 corneal keratocytes. Unlike in epithelial cells, MMP14 Δexon4 keratocytes did not express relatively higher levels of VEGFR3 than wild-type keratocytes. Interestingly, in vitro proteolysis experiments showed that MMP14 does not cleave VEGFR3 in vitro as it does VEGFR1, indicating that other genes may be involved in the modulation of VEGFR3 expression by MMP14. Using proteomic analysis to identify candidate factors, we found that 39 nuclear proteins were differentially expressed between wildtype and MMP14 Δexon4 corneal epithelial cells. These findings suggest that MMP14 may regulate VEGFR3 expression at the transcriptional level on corneal epithelial cells but not on corneal keratocytes.
    MeSH term(s) Animals ; Cells, Cultured ; Corneal Keratocytes/metabolism ; Epithelium, Corneal/blood supply ; Epithelium, Corneal/cytology ; Epithelium, Corneal/metabolism ; Gene Expression Regulation ; Matrix Metalloproteinase 14/genetics ; Matrix Metalloproteinase 14/metabolism ; Mice ; Neovascularization, Physiologic/physiology ; Proteomics ; Vascular Endothelial Growth Factor Receptor-2/metabolism ; Vascular Endothelial Growth Factor Receptor-3/metabolism
    Chemical Substances Mmp14 protein, mouse ; Kdr protein, mouse (EC 2.7.10.1) ; Vascular Endothelial Growth Factor Receptor-2 (EC 2.7.10.1) ; Vascular Endothelial Growth Factor Receptor-3 (EC 2.7.10.1) ; Matrix Metalloproteinase 14 (EC 3.4.24.80)
    Language English
    Publishing date 2016-10-21
    Publishing country Netherlands
    Document type Journal Article
    ZDB-ID 1280776-x
    ISSN 1875-5305 ; 0929-8665
    ISSN (online) 1875-5305
    ISSN 0929-8665
    DOI 10.2174/0929866523666161024142824
    Database MEDical Literature Analysis and Retrieval System OnLINE

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