{"title":"Discovery of a Phosphodiesterase 7A Inhibitor of High Isozyme Selectivity Exhibiting In Vivo Anti-Osteoporotic Effects","authors":"Kentaro Kondo, Kazuki Otake, Tetsudo Kaya, Shohei Miwa, Yoshifumi Ueyama, Tsunemitsu Haruta, Jun Nishihata, Takashi Nakagawa, Nobuhide Azuma, Kayoko Takagi, Toshiki Urashima, Yuki Kitao and Makoto Shiozaki*, ","doi":"10.1021/acsmedchemlett.4c0057010.1021/acsmedchemlett.4c00570","DOIUrl":"https://doi.org/10.1021/acsmedchemlett.4c00570https://doi.org/10.1021/acsmedchemlett.4c00570","url":null,"abstract":"<p >Phosphodiesterases (PDEs) have drawn attention due to their critical roles in physiological and pathological conditions. Many research groups have studied these hydrolytic enzymes to develop new drugs, including apremilast as a PDE4 inhibitor and sildenafil as a PDE5 inhibitor. Targeting PDE7 has also been deemed a rational strategy to ameliorate autoimmune conditions. However, to date, no successful clinical results have been reported. We postulated that progress in these studies with PDE7 had been hampered by the lack of a potent ligand with a reasonable selectivity for this PDE isozyme. Therefore, starting from a PDE7A/7B dual inhibitor, our investigations led to improved selectivity along with extended metabolic stability, resulting in a novel PDE7A inhibitor <b>26</b>. This compound with high selectivity over the closest isozyme is an ideal chemical entity to unveil new pharmacological roles of PDE7A-dependent signaling, as exemplified by the <i>in vivo</i> antiosteoporotic effects.</p>","PeriodicalId":20,"journal":{"name":"ACS Medicinal Chemistry Letters","volume":"16 1","pages":"167–173 167–173"},"PeriodicalIF":3.5,"publicationDate":"2024-12-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143086736","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Simone Giovannuzzi, Andrea Angeli, Paloma Begines, Marta Ferraroni, Alessio Nocentini, Claudiu T Supuran
{"title":"Tetrazole Is a Novel Zinc Binder Chemotype for Carbonic Anhydrase Inhibition.","authors":"Simone Giovannuzzi, Andrea Angeli, Paloma Begines, Marta Ferraroni, Alessio Nocentini, Claudiu T Supuran","doi":"10.1021/acsmedchemlett.4c00562","DOIUrl":"10.1021/acsmedchemlett.4c00562","url":null,"abstract":"<p><p>The tetrazole group is here proposed as a zinc-binding warhead for the inhibition of the metalloenzyme carbonic anhydrases. A set of synthesized derivatives incorporating the tetrazole moiety were evaluated as inhibitors against a panel of human isoforms, exhibiting <i>K</i> <sub>I</sub> values spanning between the submicromolar and low-to-medium micromolar ranges (0.62-19.6 μM). X-ray crystallographic studies were conducted to gain insights into their modes of binding to the target enzyme. These findings mark a significant advancement in the search for inhibitory chemotypes other than classical sulfonamides.</p>","PeriodicalId":20,"journal":{"name":"ACS Medicinal Chemistry Letters","volume":"16 1","pages":"163-166"},"PeriodicalIF":3.5,"publicationDate":"2024-12-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11726385/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142982226","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Simone Giovannuzzi*, Andrea Angeli, Paloma Begines, Marta Ferraroni, Alessio Nocentini and Claudiu T. Supuran*,
{"title":"Tetrazole Is a Novel Zinc Binder Chemotype for Carbonic Anhydrase Inhibition","authors":"Simone Giovannuzzi*, Andrea Angeli, Paloma Begines, Marta Ferraroni, Alessio Nocentini and Claudiu T. Supuran*, ","doi":"10.1021/acsmedchemlett.4c0056210.1021/acsmedchemlett.4c00562","DOIUrl":"https://doi.org/10.1021/acsmedchemlett.4c00562https://doi.org/10.1021/acsmedchemlett.4c00562","url":null,"abstract":"<p >The tetrazole group is here proposed as a zinc-binding warhead for the inhibition of the metalloenzyme carbonic anhydrases. A set of synthesized derivatives incorporating the tetrazole moiety were evaluated as inhibitors against a panel of human isoforms, exhibiting <i>K</i><sub>I</sub> values spanning between the submicromolar and low-to-medium micromolar ranges (0.62–19.6 μM). X-ray crystallographic studies were conducted to gain insights into their modes of binding to the target enzyme. These findings mark a significant advancement in the search for inhibitory chemotypes other than classical sulfonamides.</p>","PeriodicalId":20,"journal":{"name":"ACS Medicinal Chemistry Letters","volume":"16 1","pages":"163–166 163–166"},"PeriodicalIF":3.5,"publicationDate":"2024-12-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143086230","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Talea Knak, Sana Takada, Boris Illarionov, Violetta Krisilia, Lais Pessanha de Carvalho, Beate Lungerich, Yasumitsu Sakamoto, Stefan Höfmann, Adelbert Bacher, Rainer Kalscheuer, Jana Held, Markus Fischer, Nobutada Tanaka, Thomas Kurz
{"title":"Expanding the Chemical Space of Reverse Fosmidomycin Analogs.","authors":"Talea Knak, Sana Takada, Boris Illarionov, Violetta Krisilia, Lais Pessanha de Carvalho, Beate Lungerich, Yasumitsu Sakamoto, Stefan Höfmann, Adelbert Bacher, Rainer Kalscheuer, Jana Held, Markus Fischer, Nobutada Tanaka, Thomas Kurz","doi":"10.1021/acsmedchemlett.4c00501","DOIUrl":"10.1021/acsmedchemlett.4c00501","url":null,"abstract":"<p><p>Multidrug-resistant pathogens pose a major threat to human health, necessitating the identification of new drug targets and lead compounds that are not susceptible to cross-resistance. This study demonstrates that novel reverse thia analogs of the phosphonohydroxamic acid antibiotic fosmidomycin inhibit 1-deoxy-d-xylulose 5-phosphate reductoisomerase (DXR), an essential enzyme for <i>Plasmodium falciparum</i>, <i>Escherichia coli</i>, and <i>Mycobacterium tuberculosis</i> that is absent in humans. Some novel analogs with large α-phenyl substituents exhibited strong inhibition across these three DXR orthologues, surpassing the inhibitory activity of fosmidomycin. Despite nanomolar target inhibition, the new DXR inhibitors demonstrated mainly weak or no <i>in vitro</i> growth inhibition of the pathogens. Crystallographic studies revealed that compounds <b>12a</b> and <b>12b</b> induce an open <i>Pf</i>DXR conformation and that the enzyme selectively binds the <i>S</i>-enantiomers. The study underscores the difficulties of achieving potent cellular activity despite strong DXR inhibition and emphasizes the need for novel structural optimization strategies and comprehensive pharmacokinetic studies.</p>","PeriodicalId":20,"journal":{"name":"ACS Medicinal Chemistry Letters","volume":"16 1","pages":"136-143"},"PeriodicalIF":3.5,"publicationDate":"2024-12-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11726376/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142982000","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Bharti Rajesh Kumar Shyamlal, Amol T. Mahajan, Vikash Kumar, Aarohi Gupta, Rishabh Shrivastava Ronin, Manas Mathur, Janmejaya Sen and Sandeep Chaudhary*,
{"title":"N-Arylsulfonylated C-Homoaporphines as a New Class of Antiplatelet and Antimicrobial Agents","authors":"Bharti Rajesh Kumar Shyamlal, Amol T. Mahajan, Vikash Kumar, Aarohi Gupta, Rishabh Shrivastava Ronin, Manas Mathur, Janmejaya Sen and Sandeep Chaudhary*, ","doi":"10.1021/acsmedchemlett.4c0049110.1021/acsmedchemlett.4c00491","DOIUrl":"https://doi.org/10.1021/acsmedchemlett.4c00491https://doi.org/10.1021/acsmedchemlett.4c00491","url":null,"abstract":"<p >A series of novel N-arylsulfonylated C-homoaporphine alkaloids were synthesized under microwave irradiation and evaluated for their <i>in vitro</i> antiplatelet and antimicrobial activities. Among the series, compounds <b>12a</b>, <b>12c</b>, <b>12e</b>, <b>12f</b>, <b>12h</b>, <b>12j</b>, <b>12k</b>, <b>12m</b>, and <b>12o</b> demonstrated highly potent (∼3-fold) platelet aggregation inhibitory activity than acetylsalicylic acid (IC<sub>50</sub> = 21.34 μg/mL). Several N-arylsulfonylated C-homoaporphines also exhibited promising antimicrobial activity against various strains, including <i>Macrophoma phaseolina</i>, <i>Trichoderma reesei</i>, and <i>Aspergillus niger</i>, with minimum inhibitory concentrations (MIC) of 12.5, 6.25, and 12.5 μg/mL, respectively, comparable to Ketoconazole [MIC = 12.5 μg/mL (MP and AN strain); 6.25 μg/mL (TR strain)]. <b>12h</b> showed potent antibacterial activity (IC<sub>50</sub> = 6.25 μg/mL against <i>Escherichia coli</i> and <i>Bacillus subtilis</i>) compared to Ampicillin (IC<sub>50</sub> = 12.5 μg/mL). After thorough structure–activity relationship (SAR) and <i>in silico</i> studies, C-homoaporphines were identified as a novel class of antiplatelet and antimicrobial agents.</p>","PeriodicalId":20,"journal":{"name":"ACS Medicinal Chemistry Letters","volume":"16 1","pages":"116–125 116–125"},"PeriodicalIF":3.5,"publicationDate":"2024-12-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143085785","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Juan Pablo Cerutti, Lucas Abreu Diniz, Viviane Corrêa Santos, Salomé Catalina Vilchez Larrea, Guillermo Daniel Alonso, Rafaela Salgado Ferreira, Mario Alfredo Quevedo, Wim Dehaen
{"title":"Discovery of a Potent Triazole-Based Reversible Targeted Covalent Inhibitor of Cruzipain.","authors":"Juan Pablo Cerutti, Lucas Abreu Diniz, Viviane Corrêa Santos, Salomé Catalina Vilchez Larrea, Guillermo Daniel Alonso, Rafaela Salgado Ferreira, Mario Alfredo Quevedo, Wim Dehaen","doi":"10.1021/acsmedchemlett.4c00460","DOIUrl":"10.1021/acsmedchemlett.4c00460","url":null,"abstract":"<p><p>Cruzipain (CZP) is an essential cysteine protease of <i>Trypanosoma cruzi</i>, the etiological agent of Chagas disease, and a promising druggable target. To date, no CZP inhibitors have reached clinical use, with research efforts mostly hampered by insufficient potency, limited target selectivity or lack of bioactivity translation from the isolated enzyme to the parasite in cellular environments. In this study, we report the design of <b>SH-1</b>, a 1,2,3-triazole-based targeted covalent inhibitor with nanomolar potency (IC<sub>50</sub> = 28 nM) and null inhibition of human cathepsin L. <b>SH-1</b> demonstrates bioactivity translation comparable to that of K777 (1-10 μM), a CZP inhibitor previously advanced to clinical trials. Experimental findings indicate that <b>SH-1</b> forms a reversible covalent bond with Cys25 in CZP, while <i>in silico</i> and structure-activity relationship studies suggest that this interaction is guided by acid-base equilibrium dynamics. The potential of <b>SH-1</b> for preclinical development is discussed alongside detailed structure-activity relationships for the further optimization of CZP inhibitors.</p>","PeriodicalId":20,"journal":{"name":"ACS Medicinal Chemistry Letters","volume":"16 1","pages":"72-79"},"PeriodicalIF":3.5,"publicationDate":"2024-12-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11726379/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142981993","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Bharti Rajesh Kumar Shyamlal, Amol T Mahajan, Vikash Kumar, Aarohi Gupta, Rishabh Shrivastava Ronin, Manas Mathur, Janmejaya Sen, Sandeep Chaudhary
{"title":"N-Arylsulfonylated C-Homoaporphines as a New Class of Antiplatelet and Antimicrobial Agents.","authors":"Bharti Rajesh Kumar Shyamlal, Amol T Mahajan, Vikash Kumar, Aarohi Gupta, Rishabh Shrivastava Ronin, Manas Mathur, Janmejaya Sen, Sandeep Chaudhary","doi":"10.1021/acsmedchemlett.4c00491","DOIUrl":"10.1021/acsmedchemlett.4c00491","url":null,"abstract":"<p><p>A series of novel N-arylsulfonylated C-homoaporphine alkaloids were synthesized under microwave irradiation and evaluated for their <i>in vitro</i> antiplatelet and antimicrobial activities. Among the series, compounds <b>12a</b>, <b>12c</b>, <b>12e</b>, <b>12f</b>, <b>12h</b>, <b>12j</b>, <b>12k</b>, <b>12m</b>, and <b>12o</b> demonstrated highly potent (∼3-fold) platelet aggregation inhibitory activity than acetylsalicylic acid (IC<sub>50</sub> = 21.34 μg/mL). Several N-arylsulfonylated C-homoaporphines also exhibited promising antimicrobial activity against various strains, including <i>Macrophoma phaseolina</i>, <i>Trichoderma reesei</i>, and <i>Aspergillus niger</i>, with minimum inhibitory concentrations (MIC) of 12.5, 6.25, and 12.5 μg/mL, respectively, comparable to Ketoconazole [MIC = 12.5 μg/mL (MP and AN strain); 6.25 μg/mL (TR strain)]. <b>12h</b> showed potent antibacterial activity (IC<sub>50</sub> = 6.25 μg/mL against <i>Escherichia coli</i> and <i>Bacillus subtilis</i>) compared to Ampicillin (IC<sub>50</sub> = 12.5 μg/mL). After thorough structure-activity relationship (SAR) and <i>in silico</i> studies, C-homoaporphines were identified as a novel class of antiplatelet and antimicrobial agents.</p>","PeriodicalId":20,"journal":{"name":"ACS Medicinal Chemistry Letters","volume":"16 1","pages":"116-125"},"PeriodicalIF":3.5,"publicationDate":"2024-12-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11726367/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142982086","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Talea Knak, Sana Takada, Boris Illarionov, Violetta Krisilia, Lais Pessanha de Carvalho, Beate Lungerich, Yasumitsu Sakamoto, Stefan Höfmann, Adelbert Bacher, Rainer Kalscheuer, Jana Held, Markus Fischer, Nobutada Tanaka* and Thomas Kurz*,
{"title":"Expanding the Chemical Space of Reverse Fosmidomycin Analogs","authors":"Talea Knak, Sana Takada, Boris Illarionov, Violetta Krisilia, Lais Pessanha de Carvalho, Beate Lungerich, Yasumitsu Sakamoto, Stefan Höfmann, Adelbert Bacher, Rainer Kalscheuer, Jana Held, Markus Fischer, Nobutada Tanaka* and Thomas Kurz*, ","doi":"10.1021/acsmedchemlett.4c0050110.1021/acsmedchemlett.4c00501","DOIUrl":"https://doi.org/10.1021/acsmedchemlett.4c00501https://doi.org/10.1021/acsmedchemlett.4c00501","url":null,"abstract":"<p >Multidrug-resistant pathogens pose a major threat to human health, necessitating the identification of new drug targets and lead compounds that are not susceptible to cross-resistance. This study demonstrates that novel reverse thia analogs of the phosphonohydroxamic acid antibiotic fosmidomycin inhibit 1-deoxy-<span>d</span>-xylulose 5-phosphate reductoisomerase (DXR), an essential enzyme for <i>Plasmodium falciparum</i>, <i>Escherichia coli</i>, and <i>Mycobacterium tuberculosis</i> that is absent in humans. Some novel analogs with large α-phenyl substituents exhibited strong inhibition across these three DXR orthologues, surpassing the inhibitory activity of fosmidomycin. Despite nanomolar target inhibition, the new DXR inhibitors demonstrated mainly weak or no <i>in vitro</i> growth inhibition of the pathogens. Crystallographic studies revealed that compounds <b>12a</b> and <b>12b</b> induce an open <i>Pf</i>DXR conformation and that the enzyme selectively binds the <i>S</i>-enantiomers. The study underscores the difficulties of achieving potent cellular activity despite strong DXR inhibition and emphasizes the need for novel structural optimization strategies and comprehensive pharmacokinetic studies.</p>","PeriodicalId":20,"journal":{"name":"ACS Medicinal Chemistry Letters","volume":"16 1","pages":"136–143 136–143"},"PeriodicalIF":3.5,"publicationDate":"2024-12-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143085886","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Juan Pablo Cerutti, Lucas Abreu Diniz, Viviane Corrêa Santos, Salomé Catalina Vilchez Larrea, Guillermo Daniel Alonso, Rafaela Salgado Ferreira, Mario Alfredo Quevedo* and Wim Dehaen*,
{"title":"Discovery of a Potent Triazole-Based Reversible Targeted Covalent Inhibitor of Cruzipain","authors":"Juan Pablo Cerutti, Lucas Abreu Diniz, Viviane Corrêa Santos, Salomé Catalina Vilchez Larrea, Guillermo Daniel Alonso, Rafaela Salgado Ferreira, Mario Alfredo Quevedo* and Wim Dehaen*, ","doi":"10.1021/acsmedchemlett.4c0046010.1021/acsmedchemlett.4c00460","DOIUrl":"https://doi.org/10.1021/acsmedchemlett.4c00460https://doi.org/10.1021/acsmedchemlett.4c00460","url":null,"abstract":"<p >Cruzipain (CZP) is an essential cysteine protease of <i>Trypanosoma cruzi</i>, the etiological agent of Chagas disease, and a promising druggable target. To date, no CZP inhibitors have reached clinical use, with research efforts mostly hampered by insufficient potency, limited target selectivity or lack of bioactivity translation from the isolated enzyme to the parasite in cellular environments. In this study, we report the design of <b>SH-1</b>, a 1,2,3-triazole-based targeted covalent inhibitor with nanomolar potency (IC<sub>50</sub> = 28 nM) and null inhibition of human cathepsin L. <b>SH-1</b> demonstrates bioactivity translation comparable to that of K777 (1–10 μM), a CZP inhibitor previously advanced to clinical trials. Experimental findings indicate that <b>SH-1</b> forms a reversible covalent bond with Cys25 in CZP, while <i>in silico</i> and structure–activity relationship studies suggest that this interaction is guided by acid–base equilibrium dynamics. The potential of <b>SH-1</b> for preclinical development is discussed alongside detailed structure–activity relationships for the further optimization of CZP inhibitors.</p>","PeriodicalId":20,"journal":{"name":"ACS Medicinal Chemistry Letters","volume":"16 1","pages":"72–79 72–79"},"PeriodicalIF":3.5,"publicationDate":"2024-12-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143085607","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Novel Ergoline Compounds as 5-HT2A Agonists for Treating Mood Disorders Such as Depressive Disorders and Bipolar Disorders.","authors":"Ram W Sabnis","doi":"10.1021/acsmedchemlett.4c00593","DOIUrl":"10.1021/acsmedchemlett.4c00593","url":null,"abstract":"<p><p>Provided herein are novel ergoline compounds as 5-HT2A agonists, pharmaceutical compositions, use of such compounds in treating mood disorders such as depressive disorders and bipolar disorders, and processes for preparing such compounds.</p>","PeriodicalId":20,"journal":{"name":"ACS Medicinal Chemistry Letters","volume":"16 1","pages":"32-33"},"PeriodicalIF":3.5,"publicationDate":"2024-12-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11726375/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142982108","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}