{"title":"Highly Sensitive Naphthalene-Based Twisted Intramolecular Charge Transfer Molecules for the Detection of In Vitro and In Cellulo Protein Aggregates.","authors":"Joy Debnath, Yuvasree Sekar, Anwesha Bera","doi":"10.1021/acsmedchemlett.4c00363","DOIUrl":"https://doi.org/10.1021/acsmedchemlett.4c00363","url":null,"abstract":"<p><p>Newly synthesized naphthalene-based twisted intramolecular charge transfer (TICT) molecules show 8.5- and 2.6-fold increases in fluorescence intensity upon binding with protein aggregates in comparison with the fluorescence enhancement for thioflavin T (ThT). The dissociation constant (<i>K</i> <sub><i>d</i></sub> ) values of these compounds with bovine serum albumin (BSA) aggregates are in the 145-176 nM range, which is 10<sup>3</sup> times lower than that of ThT. Along with the strong binding propensity, these molecules are also capable of measuring protein aggregate (BSA) concentration in the 500 to 5 pM level. Interestingly, one of the synthesized molecules was also able to bind with the intracellular protein aggregates.</p>","PeriodicalId":20,"journal":{"name":"ACS Medicinal Chemistry Letters","volume":"15 12","pages":"2129-2132"},"PeriodicalIF":3.5,"publicationDate":"2024-11-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11647678/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142845281","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}
Akram H Abd El-Haleem, Manar Abd El-Karim Kassem, Mohamed R Elnagar, Safinaz E-S Abbas, Ahmed M El Kerdawy, Ahmed K B A W Farouk
{"title":"Furan- and Furopyrimidine-Based Derivatives: Synthesis, VEGFR-2 Inhibition, and <i>In Vitro</i> Cytotoxicity.","authors":"Akram H Abd El-Haleem, Manar Abd El-Karim Kassem, Mohamed R Elnagar, Safinaz E-S Abbas, Ahmed M El Kerdawy, Ahmed K B A W Farouk","doi":"10.1021/acsmedchemlett.4c00438","DOIUrl":"https://doi.org/10.1021/acsmedchemlett.4c00438","url":null,"abstract":"<p><p>New derivatives <b>4a</b>-<b>d</b>, <b>6</b>, <b>7a</b>-<b>d</b>, <b>8a</b>-<b>c</b>, <b>9</b>, <b>11a</b>, <b>11b</b>, <b>12a</b>-<b>f</b>, <b>13a</b>-<b>c</b>, and <b>14</b> were synthesized and evaluated for their VEGFR-2 inhibition. Compounds <b>4c</b>, <b>7b</b>, and <b>7c</b> showed remarkable enzyme inhibition <b>(</b>IC<sub>50</sub> = 57.1, 42.5, and 52.5 nM, respectively) relative to sorafenib (IC<sub>50</sub> = 41.1 nM) and were assessed for their cytotoxicity versus HepG2, MCF-7, A549, HT-29, and PC3 cancer cell lines in addition to WI-38. Compound <b>7b</b> displayed nearly equipotent cytotoxicity against A549 and HT-29 (IC<sub>50</sub> = 6.66 and 8.51 μM) compared to sorafenib (IC<sub>50</sub> = 6.60 and 8.78 μM). Cell cycle analysis and apoptotic assay of <b>7b</b> in the HT-29 cell line showed cellular growth arrest at the G2/M phase in addition to the induction of apoptosis. Western blot analysis of compound <b>7b</b> revealed the deactivation of VEGFR-2. Moreover, a wound healing assay of <b>7b</b> showed inhibition of wound closure. Additionally, molecular modeling studies of compounds <b>4c</b>, <b>7b</b>, and <b>7c</b> were carried out.</p>","PeriodicalId":20,"journal":{"name":"ACS Medicinal Chemistry Letters","volume":"15 12","pages":"2150-2157"},"PeriodicalIF":3.5,"publicationDate":"2024-11-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11647721/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142845279","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}
Jacob P Beard, Sierra L Love, John C Schmitz, Aaron A Hoskins, Kazunori Koide
{"title":"Structure-Activity Relationship Study of Splicing Modulators on Hsh155/SF3B1 through Chemical Synthesis and Yeast Genetics.","authors":"Jacob P Beard, Sierra L Love, John C Schmitz, Aaron A Hoskins, Kazunori Koide","doi":"10.1021/acsmedchemlett.4c00510","DOIUrl":"https://doi.org/10.1021/acsmedchemlett.4c00510","url":null,"abstract":"<p><p>Meayamycins are synthetic analogs of the natural product FR901464 and exhibit potent anticancer activity against human cancers. They bind SF3B1 and PHF5A, components of the human spliceosome, and they alter pre-mRNA splicing. Detailed analysis of the active site led us to investigate a narrow pocket within the binding site that surrounds the α,β-unsaturated amide portion of meayamycin. We describe the synthesis and biological activity of two new analogs bearing a methyl substituent on the α or β position of the amide. With these analogs, we investigated the discrete interactions within the narrow region of SF3B1 using a human/yeast chimeric SF3B1 protein and found that the V1078 residue of SF3B1 affects compound binding at the amide moiety.</p>","PeriodicalId":20,"journal":{"name":"ACS Medicinal Chemistry Letters","volume":"15 12","pages":"2225-2230"},"PeriodicalIF":3.5,"publicationDate":"2024-11-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11647714/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142845293","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}
Jacob P. Beard, Sierra L. Love, John C. Schmitz, Aaron A. Hoskins and Kazunori Koide*,
{"title":"Structure–Activity Relationship Study of Splicing Modulators on Hsh155/SF3B1 through Chemical Synthesis and Yeast Genetics","authors":"Jacob P. Beard, Sierra L. Love, John C. Schmitz, Aaron A. Hoskins and Kazunori Koide*, ","doi":"10.1021/acsmedchemlett.4c0051010.1021/acsmedchemlett.4c00510","DOIUrl":"https://doi.org/10.1021/acsmedchemlett.4c00510https://doi.org/10.1021/acsmedchemlett.4c00510","url":null,"abstract":"<p >Meayamycins are synthetic analogs of the natural product FR901464 and exhibit potent anticancer activity against human cancers. They bind SF3B1 and PHF5A, components of the human spliceosome, and they alter pre-mRNA splicing. Detailed analysis of the active site led us to investigate a narrow pocket within the binding site that surrounds the α,β-unsaturated amide portion of meayamycin. We describe the synthesis and biological activity of two new analogs bearing a methyl substituent on the α or β position of the amide. With these analogs, we investigated the discrete interactions within the narrow region of SF3B1 using a human/yeast chimeric SF3B1 protein and found that the V1078 residue of SF3B1 affects compound binding at the amide moiety.</p>","PeriodicalId":20,"journal":{"name":"ACS Medicinal Chemistry Letters","volume":"15 12","pages":"2225–2230 2225–2230"},"PeriodicalIF":3.5,"publicationDate":"2024-11-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.acs.org/doi/epdf/10.1021/acsmedchemlett.4c00510","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142843450","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}
Akram H. Abd El-Haleem, Manar Abd El-karim Kassem, Mohamed R. Elnagar, Safinaz E-S. Abbas, Ahmed M. El Kerdawy and Ahmed K. B. A. W. Farouk*,
{"title":"Furan- and Furopyrimidine-Based Derivatives: Synthesis, VEGFR-2 Inhibition, and In Vitro Cytotoxicity","authors":"Akram H. Abd El-Haleem, Manar Abd El-karim Kassem, Mohamed R. Elnagar, Safinaz E-S. Abbas, Ahmed M. El Kerdawy and Ahmed K. B. A. W. Farouk*, ","doi":"10.1021/acsmedchemlett.4c0043810.1021/acsmedchemlett.4c00438","DOIUrl":"https://doi.org/10.1021/acsmedchemlett.4c00438https://doi.org/10.1021/acsmedchemlett.4c00438","url":null,"abstract":"<p >New derivatives <b>4a</b>–<b>d</b>, <b>6</b>, <b>7a</b>–<b>d</b>, <b>8a</b>–<b>c</b>, <b>9</b>, <b>11a</b>, <b>11b</b>, <b>12a</b>–<b>f</b>, <b>13a</b>–<b>c</b>, and <b>14</b> were synthesized and evaluated for their VEGFR-2 inhibition. Compounds <b>4c</b>, <b>7b</b>, and <b>7c</b> showed remarkable enzyme inhibition <b>(</b>IC<sub>50</sub> = 57.1, 42.5, and 52.5 nM, respectively) relative to sorafenib (IC<sub>50</sub> = 41.1 nM) and were assessed for their cytotoxicity versus HepG2, MCF-7, A549, HT-29, and PC3 cancer cell lines in addition to WI-38. Compound <b>7b</b> displayed nearly equipotent cytotoxicity against A549 and HT-29 (IC<sub>50</sub> = 6.66 and 8.51 μM) compared to sorafenib (IC<sub>50</sub> = 6.60 and 8.78 μM). Cell cycle analysis and apoptotic assay of <b>7b</b> in the HT-29 cell line showed cellular growth arrest at the G2/M phase in addition to the induction of apoptosis. Western blot analysis of compound <b>7b</b> revealed the deactivation of VEGFR-2. Moreover, a wound healing assay of <b>7b</b> showed inhibition of wound closure. Additionally, molecular modeling studies of compounds <b>4c</b>, <b>7b</b>, and <b>7c</b> were carried out.</p>","PeriodicalId":20,"journal":{"name":"ACS Medicinal Chemistry Letters","volume":"15 12","pages":"2150–2157 2150–2157"},"PeriodicalIF":3.5,"publicationDate":"2024-11-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142843349","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}
Craig W. Lindsley*, Jacob M. Hooker, Kelly Chibale, Christa E. Müller and Squire J. Booker,
{"title":"Psychedelics and Entactogens: Call for Papers","authors":"Craig W. Lindsley*, Jacob M. Hooker, Kelly Chibale, Christa E. Müller and Squire J. Booker, ","doi":"10.1021/acsmedchemlett.4c0056410.1021/acsmedchemlett.4c00564","DOIUrl":"https://doi.org/10.1021/acsmedchemlett.4c00564https://doi.org/10.1021/acsmedchemlett.4c00564","url":null,"abstract":"","PeriodicalId":20,"journal":{"name":"ACS Medicinal Chemistry Letters","volume":"15 12","pages":"2067–2068 2067–2068"},"PeriodicalIF":3.5,"publicationDate":"2024-11-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142850648","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":"Design, Synthesis, and Activity Evaluation of C-23-Modified 5-<i>O</i>-Mycaminosyltylonolide Derivatives.","authors":"Zhengmin Fan, Ziwei Lin, Hongjin Zhai, Yaquan Cao, Huanhuan Wang, Aichata Maiga, Firas Obald Arhema Frejat, Changzhong Ren, Chun-Li Wu","doi":"10.1021/acsmedchemlett.4c00458","DOIUrl":"https://doi.org/10.1021/acsmedchemlett.4c00458","url":null,"abstract":"<p><p>The widespread use of tylosin family drugs in clinical practice has led to bacterial resistance and reduced therapeutic efficacy. We designed and synthesized a series of new semisynthetic derivatives of tylosin with 5-<i>O</i>-mycaminosyltylonolide as the mother nucleus, mainly by introducing a variety of amino groups at its C-23 position. Some of the compounds showed high antibacterial activity against Gram-negative and Gram-positive bacteria. These findings indicate that the best compound, <b>c9</b>, possessed significant antibacterial activity (MIC = 0.5 ug/mL), excellent bactericidal efficacy, and a low induction rate of drug resistance against <i>Staphylococcus aureus</i> and <i>Escherichia coli</i>; it also showed good antibacterial activity against drug-resistant bacteria. In addition, compound <b>c9</b> has a low toxicity in vitro and in vivo. In conclusion, compound <b>c9</b> could be a potential antimicrobial lead compound that could also contribute to the development of macrolide antibiotics.</p>","PeriodicalId":20,"journal":{"name":"ACS Medicinal Chemistry Letters","volume":"15 12","pages":"2171-2180"},"PeriodicalIF":3.5,"publicationDate":"2024-11-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11647724/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142845275","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}
Patrick Cyr, Lee D Fader, Jason D Burch, Kelly A Pike, Daniel V Sietsema, Marc-Olivier Boily, Stéphane Ciblat, Nicolas Sgarioto, Alexander M Skeldon, Samuel Gaudreault, Philippe Le Gros, Valérie Dumais, Daniel J J McKay, Nathan S Abraham, Ria Seliniotakis, Ramsay E Beveridge
{"title":"Discovery of Potent and Orally Bioavailable Pyrimidine Amide cGAS Inhibitors via Structure-Guided Hybridization.","authors":"Patrick Cyr, Lee D Fader, Jason D Burch, Kelly A Pike, Daniel V Sietsema, Marc-Olivier Boily, Stéphane Ciblat, Nicolas Sgarioto, Alexander M Skeldon, Samuel Gaudreault, Philippe Le Gros, Valérie Dumais, Daniel J J McKay, Nathan S Abraham, Ria Seliniotakis, Ramsay E Beveridge","doi":"10.1021/acsmedchemlett.4c00471","DOIUrl":"https://doi.org/10.1021/acsmedchemlett.4c00471","url":null,"abstract":"<p><p>Using a high-throughput screening (HTS) approach, a new GTP-site binding pyridine-carboxylate series of cGAS inhibitors was discovered. The biochemical potency of this new pyridine carboxylate series was improved 166-fold from the original hit to double-digit nanomolar levels using structure-based design insights, but the series was found to suffer from low permeability and low bioavailability. A structure-based hybridization of the metal-binding motifs of the pyridine carboxylate series and our previously disclosed tetrahydrocarboline GTP-site ligand <b>23</b> identified pyrimidine amide compound <b>36</b>. Compound <b>36</b> is potent against both human and mouse cGAS isoforms and has a favorable pharmacokinetic (PK) profile in mice. Additionally, compound <b>36</b> displayed a dose-dependent reduction in cGAMP production in a ConA pharmacodynamic mouse model of acute liver injury, demonstrating potential utility as an in vivo tool compound for further investigation of the cGAS pathway.</p>","PeriodicalId":20,"journal":{"name":"ACS Medicinal Chemistry Letters","volume":"15 12","pages":"2201-2209"},"PeriodicalIF":3.5,"publicationDate":"2024-11-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11647726/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142845278","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}
{"title":"Design, Synthesis, and Activity Evaluation of C-23-Modified 5-O-Mycaminosyltylonolide Derivatives","authors":"Zhengmin Fan, Ziwei Lin, Hongjin Zhai, Yaquan Cao*, Huanhuan Wang, Aichata Maiga, Firas Obald Arhema Frejat, Changzhong Ren and Chun-Li Wu*, ","doi":"10.1021/acsmedchemlett.4c0045810.1021/acsmedchemlett.4c00458","DOIUrl":"https://doi.org/10.1021/acsmedchemlett.4c00458https://doi.org/10.1021/acsmedchemlett.4c00458","url":null,"abstract":"<p >The widespread use of tylosin family drugs in clinical practice has led to bacterial resistance and reduced therapeutic efficacy. We designed and synthesized a series of new semisynthetic derivatives of tylosin with 5-<i>O</i>-mycaminosyltylonolide as the mother nucleus, mainly by introducing a variety of amino groups at its C-23 position. Some of the compounds showed high antibacterial activity against Gram-negative and Gram-positive bacteria. These findings indicate that the best compound, <b>c9</b>, possessed significant antibacterial activity (MIC = 0.5 ug/mL), excellent bactericidal efficacy, and a low induction rate of drug resistance against <i>Staphylococcus aureus</i> and <i>Escherichia coli</i>; it also showed good antibacterial activity against drug-resistant bacteria. In addition, compound <b>c9</b> has a low toxicity in vitro and in vivo. In conclusion, compound <b>c9</b> could be a potential antimicrobial lead compound that could also contribute to the development of macrolide antibiotics.</p>","PeriodicalId":20,"journal":{"name":"ACS Medicinal Chemistry Letters","volume":"15 12","pages":"2171–2180 2171–2180"},"PeriodicalIF":3.5,"publicationDate":"2024-11-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142843350","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}
Patrick Cyr*, Lee D. Fader, Jason D. Burch, Kelly A. Pike, Daniel V. Sietsema, Marc-Olivier Boily, Stéphane Ciblat, Nicolas Sgarioto, Alexander M. Skeldon, Samuel Gaudreault, Philippe Le Gros, Valérie Dumais, Daniel J. J. McKay, Nathan S. Abraham, Ria Seliniotakis and Ramsay E. Beveridge*,
{"title":"Discovery of Potent and Orally Bioavailable Pyrimidine Amide cGAS Inhibitors via Structure-Guided Hybridization","authors":"Patrick Cyr*, Lee D. Fader, Jason D. Burch, Kelly A. Pike, Daniel V. Sietsema, Marc-Olivier Boily, Stéphane Ciblat, Nicolas Sgarioto, Alexander M. Skeldon, Samuel Gaudreault, Philippe Le Gros, Valérie Dumais, Daniel J. J. McKay, Nathan S. Abraham, Ria Seliniotakis and Ramsay E. Beveridge*, ","doi":"10.1021/acsmedchemlett.4c0047110.1021/acsmedchemlett.4c00471","DOIUrl":"https://doi.org/10.1021/acsmedchemlett.4c00471https://doi.org/10.1021/acsmedchemlett.4c00471","url":null,"abstract":"<p >Using a high-throughput screening (HTS) approach, a new GTP-site binding pyridine-carboxylate series of cGAS inhibitors was discovered. The biochemical potency of this new pyridine carboxylate series was improved 166-fold from the original hit to double-digit nanomolar levels using structure-based design insights, but the series was found to suffer from low permeability and low bioavailability. A structure-based hybridization of the metal-binding motifs of the pyridine carboxylate series and our previously disclosed tetrahydrocarboline GTP-site ligand <b>23</b> identified pyrimidine amide compound <b>36</b>. Compound <b>36</b> is potent against both human and mouse cGAS isoforms and has a favorable pharmacokinetic (PK) profile in mice. Additionally, compound <b>36</b> displayed a dose-dependent reduction in cGAMP production in a ConA pharmacodynamic mouse model of acute liver injury, demonstrating potential utility as an in vivo tool compound for further investigation of the cGAS pathway.</p>","PeriodicalId":20,"journal":{"name":"ACS Medicinal Chemistry Letters","volume":"15 12","pages":"2201–2209 2201–2209"},"PeriodicalIF":3.5,"publicationDate":"2024-11-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142843581","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}