MP05-04 DISCOVERY OF DRUGS THAT PROMOTE THE PHAGOCYTIC ABILITY OF MACROPHAGES TO CALCIUM OXALATE CRYSTALS USING THE FDA-APPROVED DRUG LIBRARY

You have accessJournal of UrologyCME1 May 2022MP05-04 DISCOVERY OF DRUGS THAT PROMOTE THE PHAGOCYTIC ABILITY OF MACROPHAGES TO CALCIUM OXALATE CRYSTALS USING THE FDA-APPROVED DRUG LIBRARY Atsushi Okada, Hiroshi Takase, Masahiko Isogai, Tomoki Okada, Tatsuya Hattori, Ryosuke Chaya, Kengo Kawase, Yutaro Tanaka, Taiki Kato, Teruaki Sugino, Rei Unno, Kazumi Taguchi, Shuzo Hamamoto, Ryosuke Ando, Tadahiro Hashita, Keiichi Tozawa, Tamihide Matsunaga, Kenjiro Kohri, and Takahiro Yasui Atsushi OkadaAtsushi Okada More articles by this author , Hiroshi TakaseHiroshi Takase More articles by this author , Masahiko IsogaiMasahiko Isogai More articles by this author , Tomoki OkadaTomoki Okada More articles by this author , Tatsuya HattoriTatsuya Hattori More articles by this author , Ryosuke ChayaRyosuke Chaya More articles by this author , Kengo KawaseKengo Kawase More articles by this author , Yutaro TanakaYutaro Tanaka More articles by this author , Taiki KatoTaiki Kato More articles by this author , Teruaki SuginoTeruaki Sugino More articles by this author , Rei UnnoRei Unno More articles by this author , Kazumi TaguchiKazumi Taguchi More articles by this author , Shuzo HamamotoShuzo Hamamoto More articles by this author , Ryosuke AndoRyosuke Ando More articles by this author , Tadahiro HashitaTadahiro Hashita More articles by this author , Keiichi TozawaKeiichi Tozawa More articles by this author , Tamihide MatsunagaTamihide Matsunaga More articles by this author , Kenjiro KohriKenjiro Kohri More articles by this author , and Takahiro YasuiTakahiro Yasui More articles by this author View All Author Informationhttps://doi.org/10.1097/JU.0000000000002522.04AboutPDF ToolsAdd to favoritesDownload CitationsTrack CitationsPermissionsReprints ShareFacebookLinked InTwitterEmail Abstract INTRODUCTION AND OBJECTIVE: We have reported that calcium oxalate monohydrate crystal phagocytosis by anti-inflammatory macrophages is an important protective factor for urinary stones, suggesting that the factor may be less functional in patients with urinary stones. In order to search for new drugs that apply this mechanism, a crystal phagocytosis test was conducted using an FDA-approved drug library. METHODS: Of the 2,923 FDA-approved Drug Libraries, 823 drugs extracted with the keywords "Kidney stone," "Urinary stone," "Urolithiasis," and "Macrophage" were selected by PubMed search. Cultured macrophages RAW267.4 were stained with CellTracker ™ Orange CMRA Dye, adjusted to 1x104 cells / 100 µl, and the cells were dispensed 100 µl into 96-well plates. Each well was administered with 10 uM of each drug, and 15 µg / cm2 of fluorescent calcium oxalate monohydrate (COM) crystals stained with Alexa Fluor 488 was added. The cell area and f-COM crystal area were measured with the IncuCyte® high-throughput live cell analysis system, and total COM remaining amount (CRA) was calculated. All drugs were tested 3-5 times under the same conditions and CRA was measured. Using DMSO as a solvent as a control, the average value of CRA at 24 hours was compared by Welch's t-test. RESULTS: Live imaging with IncuCyte confirmed the image of macrophages phagocytosing COM crystals while extending dendrites over time. Of the 823 compounds, 213 and 58 drugs showed a significant difference of p <0.05 and p <0.01, respectively. Of the 58 rugs, 36 enhanced crystal phagocytosis and 22 suppressed phagocytosis. One of the flavonols reduced CRA most, and the difference in mean CRA compared to DMSO was 50.6% (p <0.0001). CONCLUSIONS: We have identified FDA-approved drugs that significantly alter the phagocytosis of COM crystals. The therapeutic effect will be verified in animal model research and clinical research in the future. Source of Funding: Japanese Urological Association Grants-in-Aid for Scientific Research © 2022 by American Urological Association Education and Research, Inc.FiguresReferencesRelatedDetails Volume 207Issue Supplement 5May 2022Page: e68 Advertisement Copyright & Permissions© 2022 by American Urological Association Education and Research, Inc.MetricsAuthor Information Atsushi Okada More articles by this author Hiroshi Takase More articles by this author Masahiko Isogai More articles by this author Tomoki Okada More articles by this author Tatsuya Hattori More articles by this author Ryosuke Chaya More articles by this author Kengo Kawase More articles by this author Yutaro Tanaka More articles by this author Taiki Kato More articles by this author Teruaki Sugino More articles by this author Rei Unno More articles by this author Kazumi Taguchi More articles by this author Shuzo Hamamoto More articles by this author Ryosuke Ando More articles by this author Tadahiro Hashita More articles by this author Keiichi Tozawa More articles by this author Tamihide Matsunaga More articles by this author Kenjiro Kohri More articles by this author Takahiro Yasui More articles by this author Expand All Advertisement PDF DownloadLoading ...