Hassan Gamal, Khadiga A Ismail, A-Mohsen M E Omar, Mohamed Teleb, Marwa M Abu-Serie, Sun Huang, Abdalla S Abdelsattar, Gerald W Zamponi, Hesham Fahmy
{"title":"Non-small cell lung cancer sensitisation to platinum chemotherapy via new thiazole-triazole hybrids acting as dual T-type CCB/MMP-9 inhibitors.","authors":"Hassan Gamal, Khadiga A Ismail, A-Mohsen M E Omar, Mohamed Teleb, Marwa M Abu-Serie, Sun Huang, Abdalla S Abdelsattar, Gerald W Zamponi, Hesham Fahmy","doi":"10.1080/14756366.2024.2388209","DOIUrl":"10.1080/14756366.2024.2388209","url":null,"abstract":"<p><p>Cisplatin remains the unchallenged standard therapy for NSCLC. However, it is not completely curative due to drug resistance and oxidative stress-induced toxicity. Drug resistance is linked to overexpression of matrix metalloproteinases (MMPs) and aberrant calcium signalling. We report synthesis of novel thiazole-triazole hybrids as MMP-9 inhibitors with T-type calcium channel blocking and antioxidant effects to sensitise NSCLC to cisplatin and ameliorate its toxicity. MTT and whole cell patch clamp assays revealed that <b>6d</b> has a balanced profile of cytotoxicity (IC<sub>50</sub> = 21 ± 1 nM, SI = 12.14) and T-type calcium channel blocking activity (⁓60% at 10 μM). It exhibited moderate ROS scavenging activity and nanomolar MMP-9 inhibition (IC<sub>50</sub> = 90 ± 7 nM) surpassing NNGH with MMP-9 over -2 and MMP-10 over -13 selectivity. Docking and MDs simulated its receptor binding mode. Combination studies confirmed that <b>6d</b> synergized with cisplatin (CI = 0.69 ± 0.05) lowering its IC<sub>50</sub> by 6.89 folds. Overall, the study introduces potential lead adjuvants for NSCLC platinum-based therapy.</p>","PeriodicalId":15769,"journal":{"name":"Journal of Enzyme Inhibition and Medicinal Chemistry","volume":null,"pages":null},"PeriodicalIF":5.6,"publicationDate":"2024-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11328607/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141975776","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Discovery of novel anaplastic lymphoma kinase (ALK) and histone deacetylase (HDAC) dual inhibitors exhibiting antiproliferative activity against non-small cell lung cancer.","authors":"Kang-Li Wang, Tsung-Yu Yeh, Pei-Chen Hsu, Tzu-Hsuan Wong, Jia-Rong Liu, Ji-Wang Chern, Miao-Hsia Lin, Chao-Wu Yu","doi":"10.1080/14756366.2024.2318645","DOIUrl":"10.1080/14756366.2024.2318645","url":null,"abstract":"<p><p>A series of novel benzimidazole derivatives were designed and synthesised based on the structures of reported oral available ALK inhibitor and HDAC inhibitor, pracinostat. In enzymatic assays, compound <b>3b</b>, containing a 2-acyliminobenzimidazole moiety and hydroxamic acid side chain, could inhibit both ALK and HDAC6 (IC<sub>50</sub> = 16 nM and 1.03 µM, respectively). Compound <b>3b</b> also inhibited various ALK mutants known to be involved in crizotinib resistance, including mutant L1196M (IC<sub>50</sub>, 4.9 nM). Moreover, <b>3b</b> inhibited the proliferation of several cancer cell lines, including ALK-addicted H2228 cells. To evaluate its potential for treating cancers <i>in vivo</i>, <b>3b</b> was used in a human A549 xenograft model with BALB/c nude mice. At 20 mg/kg, <b>3b</b> inhibited tumour growth by 85% yet had a negligible effect on mean body weight. These results suggest a attracting route for the further research and optimisation of dual ALK/HDAC inhibitors.</p>","PeriodicalId":15769,"journal":{"name":"Journal of Enzyme Inhibition and Medicinal Chemistry","volume":null,"pages":null},"PeriodicalIF":5.6,"publicationDate":"2024-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10930102/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140094175","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Correction.","authors":"","doi":"10.1080/14756366.2023.2297117","DOIUrl":"10.1080/14756366.2023.2297117","url":null,"abstract":"","PeriodicalId":15769,"journal":{"name":"Journal of Enzyme Inhibition and Medicinal Chemistry","volume":null,"pages":null},"PeriodicalIF":5.6,"publicationDate":"2024-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10763826/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138829972","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Di Wang, Jiang-Jie Duan, Yu-Feng Guo, Jun-Jie Chen, Tian-Qing Chen, Jun Wang, Shi-Cang Yu
{"title":"Targeting the glutamine-arginine-proline metabolism axis in cancer.","authors":"Di Wang, Jiang-Jie Duan, Yu-Feng Guo, Jun-Jie Chen, Tian-Qing Chen, Jun Wang, Shi-Cang Yu","doi":"10.1080/14756366.2024.2367129","DOIUrl":"10.1080/14756366.2024.2367129","url":null,"abstract":"<p><p>Metabolic abnormalities are an important feature of tumours. The glutamine-arginine-proline axis is an important node of cancer metabolism and plays a major role in amino acid metabolism. This axis also acts as a scaffold for the synthesis of other nonessential amino acids and essential metabolites. In this paper, we briefly review (1) the glutamine addiction exhibited by tumour cells with accelerated glutamine transport and metabolism; (2) the methods regulating extracellular glutamine entry, intracellular glutamine synthesis and the fate of intracellular glutamine; (3) the glutamine, proline and arginine metabolic pathways and their interaction; and (4) the research progress in tumour therapy targeting the glutamine-arginine-proline metabolic system, with a focus on summarising the therapeutic research progress of strategies targeting of one of the key enzymes of this metabolic system, P5CS (ALDH18A1). This review provides a new basis for treatments targeting the metabolic characteristics of tumours.</p>","PeriodicalId":15769,"journal":{"name":"Journal of Enzyme Inhibition and Medicinal Chemistry","volume":null,"pages":null},"PeriodicalIF":5.6,"publicationDate":"2024-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11275534/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141759105","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Mengru Jin, Luyao Shi, Li Wang, Dingyuan Zhang, Yanjing Li
{"title":"Dihydroartemisinin enhances the anti-tumour effect of photodynamic therapy by targeting PKM2-mediated glycolysis in oesophageal cancer cell.","authors":"Mengru Jin, Luyao Shi, Li Wang, Dingyuan Zhang, Yanjing Li","doi":"10.1080/14756366.2023.2296695","DOIUrl":"10.1080/14756366.2023.2296695","url":null,"abstract":"<p><p>Photodynamic therapy (PDT) has been demonstrated to provide immediate relief of oesophageal cancer patients' re-obstruction and extend their lifespan. However, tumour regrowth may occur after PDT due to enhanced aerobic glycolysis. Previous research has confirmed the inhibitory effect of Dihydroartemisinin (DHA) on aerobic glycolysis. Therefore, the current study intends to investigate the function and molecular mechanism of DHA targeting tumour cell aerobic glycolysis in synergia PDT. The combined treatment significantly suppressed glycolysis in vitro and in vivo compared to either monotherapy. Exploration of the mechanism through corresponding experiments revealed that pyruvate kinase M2 (PKM2) was downregulated in treated cells, whereas overexpression of PKM2 nullified the inhibitory effects of DHA and PDT. This study proposes a novel therapeutic strategy for oesophageal cancer through DHA-synergized PDT treatment, targeting inhibit PKM2 to reduce tumour cell proliferation and metastasis.</p>","PeriodicalId":15769,"journal":{"name":"Journal of Enzyme Inhibition and Medicinal Chemistry","volume":null,"pages":null},"PeriodicalIF":5.6,"publicationDate":"2024-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138804772","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Mohamed A Mahmoud, Anber F Mohammed, Ola I A Salem, Tahani Mazyad Almutairi, Stefan Bräse, Bahaa G M Youssif
{"title":"Design, synthesis, and apoptotic antiproliferative action of new 1,2,3-triazole/1,2,4-oxadiazole hybrids as dual EGFR/VEGFR-2 inhibitors.","authors":"Mohamed A Mahmoud, Anber F Mohammed, Ola I A Salem, Tahani Mazyad Almutairi, Stefan Bräse, Bahaa G M Youssif","doi":"10.1080/14756366.2024.2305856","DOIUrl":"10.1080/14756366.2024.2305856","url":null,"abstract":"<p><p>A novel series of 1,2,3-triazole/1,2,4-oxadiazole hybrids (<b>7a</b>-<b>o</b>) was developed as dual inhibitors of EGFR/VEGFR-2. Compounds <b>7a</b>-<b>o</b> were evaluated as antiproliferative agents with Erlotinib as the reference drug. Results demonstrated that most of the tested compounds showed significant antiproliferative action with GI<sub>50</sub> values ranging from 28 to 104 nM, compared to Erlotinib (GI<sub>50</sub> = 33 nM), and compounds <b>7i</b>-<b>m</b> were the most potent. Compounds <b>7h</b>, <b>7i</b>, <b>7j</b>, <b>7k</b>, and <b>7l</b> were evaluated as dual EGFR/VEGFR-2 inhibitors. These <i>in vitro</i> experiments demonstrated that compounds <b>7j</b>, <b>7k</b>, and <b>7l</b> are potent antiproliferative agents that may operate as dual EGFR/VEGFR-2 inhibitors. Compounds <b>7j</b>, <b>7k</b>, and <b>7l</b> were evaluated for their apoptotic potential activity, where findings indicated that compounds <b>7j</b>, <b>7k,</b> and <b>7l</b> promote apoptosis by activating caspase-3, 8, and Bax and down-regulating the anti-apoptotic Bcl-2. Molecular docking simulations show the binding mode of the most active antiproliferative compounds within EGFR and VEGFR-2 active sites.</p>","PeriodicalId":15769,"journal":{"name":"Journal of Enzyme Inhibition and Medicinal Chemistry","volume":null,"pages":null},"PeriodicalIF":5.6,"publicationDate":"2024-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10854447/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139702683","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Yujuan Li, Luyou Yelv, Xiaoqiu Wu, Ning Liu, Yamin Zhu
{"title":"Design, synthesis and biological evaluation of marine naphthoquinone-naphthol derivatives as potential anticancer agents.","authors":"Yujuan Li, Luyou Yelv, Xiaoqiu Wu, Ning Liu, Yamin Zhu","doi":"10.1080/14756366.2024.2412865","DOIUrl":"https://doi.org/10.1080/14756366.2024.2412865","url":null,"abstract":"<p><p>1'-Hydroxy-4',8,8'-trimethoxy-[2,2'-binaphthalene]-1,4-dione (compound <b>5</b>), a secondary metabolite recently discovered in marine fungi, demonstrates promising cytotoxic and anticancer potential. However, knowledge regarding the anticancer activities and biological mechanisms of its derivatives remains limited. Herein, a series of novel naphthoquinone-naphthol derivatives were designed, synthesised, and evaluated for their anticancer activity against cancer cells of different origins. Among these, Compound <b>13</b>, featuring an oxopropyl group at the <i>ortho</i>-position of quinone group, exhibited the most potent inhibitory effects on HCT116, PC9, and A549 cells, with IC<sub>50</sub> values decreasing from 5.27 to 1.18 μM (4.5-fold increase), 6.98 to 0.57 μM (12-fold increase), and 5.88 to 2.25 μM (2.6-fold increase), respectively, compared to compound <b>5</b>. Further mechanistic studies revealed that compound <b>13</b> significantly induced cell apoptosis by increasing the expression levels of cleaved caspase-3 and reducing Bcl-2 proteins through downregulating the EGFR/PI3K/Akt signalling pathway, leading to the inhibition of proliferation in HCT116 and PC9 cells. The present findings suggest this novel naphthoquinone-naphthol derivative may hold potential as an anticancer therapeutic lead.</p>","PeriodicalId":15769,"journal":{"name":"Journal of Enzyme Inhibition and Medicinal Chemistry","volume":null,"pages":null},"PeriodicalIF":5.6,"publicationDate":"2024-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11486183/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142467263","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Christine A Morcos, Nesreen S Haiba, Rafik W Bassily, Marwa M Abu-Serie, Amira F El-Yazbi, Omar A Soliman, Sherine N Khattab, Mohamed Teleb
{"title":"Structure optimization and molecular dynamics studies of new tumor-selective <i>s</i>-triazines targeting DNA and MMP-10/13 for halting colorectal and secondary liver cancers.","authors":"Christine A Morcos, Nesreen S Haiba, Rafik W Bassily, Marwa M Abu-Serie, Amira F El-Yazbi, Omar A Soliman, Sherine N Khattab, Mohamed Teleb","doi":"10.1080/14756366.2024.2423174","DOIUrl":"https://doi.org/10.1080/14756366.2024.2423174","url":null,"abstract":"<p><p>A series of triazole-tethered triazines bearing pharmacophoric features of DNA-targeting agents and non-hydroxamate MMPs inhibitors were synthesized and screened against HCT-116, Caco-2 cells, and normal colonocytes by MTT assay. <b>7a</b> and <b>7g</b> surpassed doxorubicin against HCT-116 cells regarding potency (IC<sub>50</sub> = 0.87 and 1.41 nM) and safety (SI = 181.93 and 54.41). <b>7g</b> was potent against liver cancer (HepG-2; IC<sub>50</sub> = 65.08 nM), the main metastatic site of CRC with correlation to MMP-13 expression. Both derivatives induced DNA damage at 2.67 and 1.87 nM, disrupted HCT-116 cell cycle and triggered apoptosis by 33.17% compared to doxorubicin (DNA damage at 0.76 nM and 40.21% apoptosis induction). <b>7g</b> surpassed NNGH against MMP-10 (IC<sub>50</sub> = 0.205 μM) and MMP-13 (IC<sub>50</sub> = 0.275 μM) and downregulated HCT-116 VEGF related to CRC progression by 38%. Docking and MDs simulated ligands-receptors binding modes and highlighted SAR. Their ADMET profiles, drug-likeness and possible off-targets were computationally predicted.</p>","PeriodicalId":15769,"journal":{"name":"Journal of Enzyme Inhibition and Medicinal Chemistry","volume":null,"pages":null},"PeriodicalIF":5.6,"publicationDate":"2024-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142604651","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Fatma A Elshibani, Abdullah D Alamami, Hamdoon A Mohammed, Rabab Ahmed Rasheed, Radwa M El Sabban, Mohamed A Yehia, Sherif S Abdel Mageed, Taghreed A Majrashi, Eslam B Elkaeed, Mahmoud A El Hassab, Wagdy M Eldehna, Mohamed K El-Ashrey
{"title":"A multidisciplinary approach to the antioxidant and hepatoprotective activities of <i>Arbutus pavarii</i> Pampan fruit; <i>in vitro</i> and <i>in Vivo</i> biological evaluations, and <i>in silico</i> investigations.","authors":"Fatma A Elshibani, Abdullah D Alamami, Hamdoon A Mohammed, Rabab Ahmed Rasheed, Radwa M El Sabban, Mohamed A Yehia, Sherif S Abdel Mageed, Taghreed A Majrashi, Eslam B Elkaeed, Mahmoud A El Hassab, Wagdy M Eldehna, Mohamed K El-Ashrey","doi":"10.1080/14756366.2023.2293639","DOIUrl":"10.1080/14756366.2023.2293639","url":null,"abstract":"<p><p>The Libyan Strawberry, <i>Arbutus pavarii</i> Pampan (ARB), is an endemic Jebel Akhdar plant used for traditional medicine. This study presents the antioxidant and hepatoprotective properties of ARB fruit-extract. ARB phytochemical analysis indicated the presence of 354.54 GAE and 36.2 RE of the phenolics and flavonoids. LC-MS analysis identified 35 compounds belonging to phenolic acids, procyanidins, and flavonoid glycosides. Gallic acid, procyanidin dimer B3, β-type procyanidin trimer C, and quercetin-3-O-glucoside were the major constituents of the plant extract. ARB administration to paracetamol (PAR)-intoxicated rats reduced serum ALT, AST, bilirubin, hepatic tissue MDA and proinflammatory markers; TNF-α and IL-6 with an increase in tissue GSH level and SOD activity. Histological and immunohistochemical studies revealed that ARB restored the liver histology and significantly reduced the tissue expression of caspase 3, IL-1B, and NF-KB in PAR-induced liver damage. Docking analysis disclosed good binding affinities of some compounds with XO, COX-1, 5-LOX, and PI3K.</p>","PeriodicalId":15769,"journal":{"name":"Journal of Enzyme Inhibition and Medicinal Chemistry","volume":null,"pages":null},"PeriodicalIF":5.6,"publicationDate":"2024-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10763860/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139048862","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Marwa E Abdelaziz, Mostafa M M El-Miligy, Salwa M Fahmy, Marwa M Abu-Serie, Aly A Hazzaa, Mona A Mahran
{"title":"Imparting aromaticity to 2-pyridone derivatives by <i>O</i>-alkylation resulted in new competitive and non-competitive PIM-1 kinase inhibitors with caspase-activated apoptosis.","authors":"Marwa E Abdelaziz, Mostafa M M El-Miligy, Salwa M Fahmy, Marwa M Abu-Serie, Aly A Hazzaa, Mona A Mahran","doi":"10.1080/14756366.2024.2304044","DOIUrl":"10.1080/14756366.2024.2304044","url":null,"abstract":"<p><p>New aromatic <i>O</i>-alkyl pyridine derivatives were designed and synthesised as Proviral Integration Moloney (PIM)-1 kinase inhibitors. <b>4c</b> and <b>4f</b> showed potent <i>in vitro</i> anticancer activity against NFS-60, HepG-2, PC-3, and Caco-2 cell lines and low toxicity against normal human lung fibroblast Wi-38 cell line. Moreover, <b>4c</b> and <b>4f</b> induced apoptosis in the four tested cancer cell lines with high percentage. In addition, <b>4c</b> and <b>4f</b> significantly induced caspase 3/7 activation in HepG-2 cell line. Furthermore, <b>4c</b> and <b>4f</b> showed potent PIM-1 kinase inhibitory activity with IC<sub>50</sub> = 0.110, 0.095 µM, respectively. Kinetic studies indicated that <b>4c</b> and <b>4f</b> were both competitive and non-competitive inhibitors for PIM-1 kinase enzyme. In addition, <i>in silico</i> prediction of physiochemical properties, pharmacokinetic profile, ligand efficiency, ligand lipophilic efficiency, and induced fit docking studies were consistent with the biological and kinetic studies, and predicted that <b>4c</b> and <b>4f</b> could act as PIM-1 kinase competitive non-adenosine triphosphate (ATP) mimetics with drug like properties.</p>","PeriodicalId":15769,"journal":{"name":"Journal of Enzyme Inhibition and Medicinal Chemistry","volume":null,"pages":null},"PeriodicalIF":5.6,"publicationDate":"2024-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10795791/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139478512","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}