CN108467395B - 一种几丁质酶抑制剂及其应用 - Google Patents
一种几丁质酶抑制剂及其应用 Download PDFInfo
- Publication number
- CN108467395B CN108467395B CN201810439288.0A CN201810439288A CN108467395B CN 108467395 B CN108467395 B CN 108467395B CN 201810439288 A CN201810439288 A CN 201810439288A CN 108467395 B CN108467395 B CN 108467395B
- Authority
- CN
- China
- Prior art keywords
- chitinase
- activity
- reaction system
- final concentration
- inhibitor
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 229940125842 Chitinase inhibitor Drugs 0.000 title claims abstract description 9
- 108010022172 Chitinases Proteins 0.000 claims abstract description 45
- 102000012286 Chitinases Human genes 0.000 claims abstract description 44
- 230000000694 effects Effects 0.000 claims abstract description 30
- 241000346285 Ostrinia furnacalis Species 0.000 claims abstract description 11
- 241000282414 Homo sapiens Species 0.000 claims abstract description 10
- 241001225321 Aspergillus fumigatus Species 0.000 claims abstract description 7
- 241000244203 Caenorhabditis elegans Species 0.000 claims abstract description 7
- 229940091771 aspergillus fumigatus Drugs 0.000 claims abstract description 7
- 238000006243 chemical reaction Methods 0.000 claims description 34
- 239000003112 inhibitor Substances 0.000 claims description 22
- 230000002401 inhibitory effect Effects 0.000 claims description 18
- 230000001580 bacterial effect Effects 0.000 claims description 7
- 101710082424 Endochitinase B1 Proteins 0.000 claims description 5
- 108010065883 Serratia marcescens chitinase A Proteins 0.000 claims description 5
- 241000607479 Yersinia pestis Species 0.000 claims description 5
- 208000006673 asthma Diseases 0.000 claims description 5
- 108010083291 Serratia marcescens chitinase B Proteins 0.000 claims description 4
- 206010017533 Fungal infection Diseases 0.000 claims description 3
- 206010020751 Hypersensitivity Diseases 0.000 claims description 3
- 241000124008 Mammalia Species 0.000 claims description 3
- 208000031888 Mycoses Diseases 0.000 claims description 3
- 208000026935 allergic disease Diseases 0.000 claims description 3
- 230000007815 allergy Effects 0.000 claims description 3
- RQFQJYYMBWVMQG-IXDPLRRUSA-N chitotriose Chemical compound O[C@@H]1[C@@H](N)[C@H](O)O[C@H](CO)[C@H]1O[C@H]1[C@H](N)[C@@H](O)[C@H](O[C@H]2[C@@H]([C@@H](O)[C@H](O)[C@@H](CO)O2)N)[C@@H](CO)O1 RQFQJYYMBWVMQG-IXDPLRRUSA-N 0.000 claims description 3
- 239000003814 drug Substances 0.000 claims description 3
- 102000015962 Chitinase II Human genes 0.000 claims description 2
- 108050004344 Chitinase II Proteins 0.000 claims description 2
- 241000131066 Coccinella Species 0.000 claims description 2
- 230000002378 acidificating effect Effects 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 claims 2
- 150000001875 compounds Chemical class 0.000 abstract description 45
- 230000005764 inhibitory process Effects 0.000 abstract description 31
- -1 2-amino-bipyridyl pyrimidine Chemical compound 0.000 abstract description 7
- CMEXATFKZQGGHY-UHFFFAOYSA-N 5,6,7,8-tetrahydro-1,5-naphthyridin-2-amine Chemical group Nc1ccc2NCCCc2n1 CMEXATFKZQGGHY-UHFFFAOYSA-N 0.000 abstract description 5
- 238000011160 research Methods 0.000 abstract description 5
- 239000000126 substance Substances 0.000 abstract description 3
- 241000607715 Serratia marcescens Species 0.000 abstract description 2
- 238000011156 evaluation Methods 0.000 abstract description 2
- 241000243981 Onchocerca Species 0.000 abstract 1
- 101710178876 Acidic mammalian chitinase Proteins 0.000 description 11
- 102100037839 Acidic mammalian chitinase Human genes 0.000 description 11
- 238000012216 screening Methods 0.000 description 11
- 239000000758 substrate Substances 0.000 description 10
- 239000000243 solution Substances 0.000 description 8
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 6
- 241000238631 Hexapoda Species 0.000 description 5
- 230000002538 fungal effect Effects 0.000 description 5
- 229920002101 Chitin Polymers 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 125000001424 substituent group Chemical group 0.000 description 4
- OVRNDRQMDRJTHS-UHFFFAOYSA-N N-acelyl-D-glucosamine Natural products CC(=O)NC1C(O)OC(CO)C(O)C1O OVRNDRQMDRJTHS-UHFFFAOYSA-N 0.000 description 3
- OVRNDRQMDRJTHS-RTRLPJTCSA-N N-acetyl-D-glucosamine Chemical compound CC(=O)N[C@H]1C(O)O[C@H](CO)[C@@H](O)[C@@H]1O OVRNDRQMDRJTHS-RTRLPJTCSA-N 0.000 description 3
- MBLBDJOUHNCFQT-LXGUWJNJSA-N N-acetylglucosamine Natural products CC(=O)N[C@@H](C=O)[C@@H](O)[C@H](O)[C@H](O)CO MBLBDJOUHNCFQT-LXGUWJNJSA-N 0.000 description 3
- 241000244206 Nematoda Species 0.000 description 3
- 238000002835 absorbance Methods 0.000 description 3
- 238000011161 development Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000005284 excitation Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 239000008055 phosphate buffer solution Substances 0.000 description 3
- 239000013641 positive control Substances 0.000 description 3
- 229910000029 sodium carbonate Inorganic materials 0.000 description 3
- 102000004190 Enzymes Human genes 0.000 description 2
- 108090000790 Enzymes Proteins 0.000 description 2
- 201000009961 allergic asthma Diseases 0.000 description 2
- 210000002421 cell wall Anatomy 0.000 description 2
- 230000001276 controlling effect Effects 0.000 description 2
- 210000004072 lung Anatomy 0.000 description 2
- 241000206761 Bacillariophyta Species 0.000 description 1
- 229920001661 Chitosan Polymers 0.000 description 1
- 241000238424 Crustacea Species 0.000 description 1
- 241000233866 Fungi Species 0.000 description 1
- 229940124036 Hydrolase inhibitor Drugs 0.000 description 1
- 241000237852 Mollusca Species 0.000 description 1
- OVRNDRQMDRJTHS-FMDGEEDCSA-N N-acetyl-beta-D-glucosamine Chemical compound CC(=O)N[C@H]1[C@H](O)O[C@H](CO)[C@@H](O)[C@@H]1O OVRNDRQMDRJTHS-FMDGEEDCSA-N 0.000 description 1
- 241000243985 Onchocerca volvulus Species 0.000 description 1
- 206010035664 Pneumonia Diseases 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 230000003266 anti-allergic effect Effects 0.000 description 1
- 239000003429 antifungal agent Substances 0.000 description 1
- 229940121375 antifungal agent Drugs 0.000 description 1
- 238000003556 assay Methods 0.000 description 1
- 239000000022 bacteriostatic agent Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000000872 buffer Substances 0.000 description 1
- 210000004027 cell Anatomy 0.000 description 1
- 230000003828 downregulation Effects 0.000 description 1
- 238000009510 drug design Methods 0.000 description 1
- 210000003278 egg shell Anatomy 0.000 description 1
- 230000014509 gene expression Effects 0.000 description 1
- 150000004676 glycans Chemical class 0.000 description 1
- 125000003147 glycosyl group Chemical group 0.000 description 1
- 102000040343 glycosyl hydrolase 18 family Human genes 0.000 description 1
- 108091072148 glycosyl hydrolase 18 family Proteins 0.000 description 1
- 239000004093 hydrolase inhibitor Substances 0.000 description 1
- 230000007062 hydrolysis Effects 0.000 description 1
- 238000006460 hydrolysis reaction Methods 0.000 description 1
- 230000003832 immune regulation Effects 0.000 description 1
- 208000026278 immune system disease Diseases 0.000 description 1
- 239000002955 immunomodulating agent Substances 0.000 description 1
- 229940121354 immunomodulator Drugs 0.000 description 1
- 239000002917 insecticide Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 235000021231 nutrient uptake Nutrition 0.000 description 1
- 208000002042 onchocerciasis Diseases 0.000 description 1
- RGCLLPNLLBQHPF-HJWRWDBZSA-N phosphamidon Chemical compound CCN(CC)C(=O)C(\Cl)=C(/C)OP(=O)(OC)OC RGCLLPNLLBQHPF-HJWRWDBZSA-N 0.000 description 1
- 229920001282 polysaccharide Polymers 0.000 description 1
- 239000005017 polysaccharide Substances 0.000 description 1
- 230000002685 pulmonary effect Effects 0.000 description 1
- WZUYRUCXPBGUOM-UHFFFAOYSA-N pyrido[3,2-d]pyrimidin-2-amine Chemical compound N1=CC=CC2=NC(N)=NC=C21 WZUYRUCXPBGUOM-UHFFFAOYSA-N 0.000 description 1
- 230000035484 reaction time Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000007634 remodeling Methods 0.000 description 1
- 210000002345 respiratory system Anatomy 0.000 description 1
- 241000894007 species Species 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D471/00—Heterocyclic compounds containing nitrogen atoms as the only ring hetero atoms in the condensed system, at least one ring being a six-membered ring with one nitrogen atom, not provided for by groups C07D451/00 - C07D463/00
- C07D471/12—Heterocyclic compounds containing nitrogen atoms as the only ring hetero atoms in the condensed system, at least one ring being a six-membered ring with one nitrogen atom, not provided for by groups C07D451/00 - C07D463/00 in which the condensed system contains three hetero rings
- C07D471/14—Ortho-condensed systems
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P11/00—Drugs for disorders of the respiratory system
- A61P11/06—Antiasthmatics
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P29/00—Non-central analgesic, antipyretic or antiinflammatory agents, e.g. antirheumatic agents; Non-steroidal antiinflammatory drugs [NSAID]
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P31/00—Antiinfectives, i.e. antibiotics, antiseptics, chemotherapeutics
- A61P31/04—Antibacterial agents
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P31/00—Antiinfectives, i.e. antibiotics, antiseptics, chemotherapeutics
- A61P31/10—Antimycotics
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P37/00—Drugs for immunological or allergic disorders
- A61P37/08—Antiallergic agents
Landscapes
- Health & Medical Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Pharmacology & Pharmacy (AREA)
- Animal Behavior & Ethology (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Medicinal Chemistry (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Veterinary Medicine (AREA)
- Public Health (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Pulmonology (AREA)
- Bioinformatics & Cheminformatics (AREA)
- Engineering & Computer Science (AREA)
- Communicable Diseases (AREA)
- Oncology (AREA)
- Immunology (AREA)
- Pain & Pain Management (AREA)
- Rheumatology (AREA)
- Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
- Measuring Or Testing Involving Enzymes Or Micro-Organisms (AREA)
Abstract
本发明公开一种几丁质酶的抑制剂及其应用,所述几丁质酶抑制剂为2‑氨基‑吡啶并哌啶1位和3位衍生物,其结构通式如Ⅰ所示,通过抑制效果、选择性对化合物的抑制活性进行了抑制效果评价研究,在复筛的所有75个化合物中,2‑氨基‑吡啶并哌啶1位和3位衍生物对人类、盘尾丝虫、秀丽线虫、亚洲玉米螟、烟曲霉和粘质沙雷氏菌几丁质酶均表现出一定的抑制活性。总之,本发明所述的2‑氨基‑联吡啶并嘧啶1位和3位衍生物在生物学和化学生物学等领域有广泛的应用前景。
Description
技术领域
本发明属于生物技术领域,具体涉及2-氨基-联吡啶并嘧啶1位和3位衍生物化合物作为几丁质酶的抑制剂的应用。
背景技术
几丁质(Chitin)是以N-乙酰-β-D-葡萄糖胺(GlcNAc)为基本单元,通过β-1,4糖苷键连接的天然线性直链多糖。作为重要的结构组成部分,几丁质大量存在于真菌和硅藻的细胞壁、软体动物的外壳、线虫的卵壳以及甲壳类生物和昆虫的外骨骼中,其合成和水解的动态平衡对于这些生物的生长发育具有极其重要的作用。来自糖基水解酶18家族的几丁质酶Cht(chitinase)参与细菌营养吸收、真菌细胞壁重塑、昆虫蜕皮发育和人类肺部免疫调节过程。早期对几丁质酶抑制剂的研究发现其可以有效的抑制细菌繁殖。干扰真菌几丁质酶基因表达水平将导致真菌分裂过程中细胞个体不能分离。抑制线虫几丁质酶会导致发育停滞。另外下调或敲除昆虫几丁质酶会导致昆虫蜕皮不正常而死亡。对人类几丁质酶的研究表明其对几丁质的识别会引起肺部免疫功能紊乱,同时几丁质酶参与呼吸道过敏和哮喘发病过程。因此,将18家族几丁质酶作为抑菌剂、抗真菌剂、杀虫剂和潜在的肺部免疫调节剂和抗过敏哮喘药物设计的靶点,开发高效的几丁质酶抑制剂对于抗细菌真菌感染、防治农业害虫和抗过敏哮喘具有非常重要的意义。近十年来,细菌、真菌、线虫、昆虫和人类几丁质酶研究在生物学和化学生物学等领域取得了突出进展。其中,来源于粘质沙雷氏菌几丁质酶A、B(SmChiA、SmChiB),烟曲霉几丁质酶B1(AfChiB1),秀丽隐杆线虫几丁质酶I(CeChtI),盘尾丝虫几丁质酶I(OvChtI)几丁质酶农业害虫亚洲玉米螟几丁质酶I、II-C2、h(OfChI、OfChII-C2、OfChi-h)和人壳三糖酶、酸性哺乳动物几丁质酶(HsChit1、AMCase)的晶体结构的解析取得重要进展,为针对不同物种几丁质酶的小分子理性设计提供理论基础。
发明内容
在抑制细菌生长、控制真菌繁殖、防治农业害虫和调节肺部炎症的研究中,为了找到高效的18家族糖基水解酶抑制剂,本发明筛选了大量具有2-氨基-联吡啶并嘧啶类化合物,通过抑制效果、选择性对化合物的抑制活性进行了抑制效果评价研究,最终筛选到了一组抑制剂。
首先,本发明公开一种几丁质酶抑制剂,所述几丁质酶抑制剂是2-氨基-联吡啶并嘧啶类1位和3位衍生物(2-amino-pyridopyrimidin),其结构式如I所示:
其中:R1基团选自以下取代基:
R2基团取自以下取代基:
R3基团取自以下取代基:
R4基团取自以下取代基:
本发明还公开结构式如I所示的抑制剂和/或其衍生物在抑制几丁质酶活性中的应用,尤其是在抑制18家族几丁质酶活性。
具体的,上文所述的应用,是指结构式如I所示的抑制剂和/或其衍生物在抑制人类壳三糖酶活性时,其在反应体系中使用的终浓度为不低于10μM;在抑制人类酸性哺乳动物几丁质酶活性时,其在反应体系中使用的终浓度为不低于20μM;在抑制亚洲玉米螟几丁质酶I活性时,其在反应体系中使用的终浓度为不低于50μM;在抑制亚洲玉米螟几丁质酶II活性时,其在反应体系中使用的终浓度为不低于25μM;在抑制亚洲玉米螟几丁质酶h活性时,其在反应体系中使用的终浓度为不低于1μM;在抑制粘质沙雷氏菌几丁质酶A活性时,其在反应体系中使用的终浓度为不低于10μM;在抑制粘质沙雷氏菌几丁质酶B活性时,其在反应体系中使用的终浓度为不低于1μM;在抑制烟曲霉几丁质酶B1活性时,其在反应体系中使用的终浓度为不低于10μM;在抑制秀丽隐杆线虫几丁质酶I活性时,其在反应体系中使用的终浓度为不低于20μM;在抑制盘尾丝虫几丁质酶I活性时,其在反应体系中使用的终浓度为不低于20μM。
此外,结构式如I所示的的抑制剂和/或其衍生物在抑制细菌生长、抗真菌感染、控制农业害虫和抗过敏及哮喘方面也具有广泛的应用前景。
有益效果
本发明提供了评价结构式如I所示抑制剂(2-氨基-联吡啶并嘧啶1位和3位衍生物)的抑制活性所获得的数据,包括抑制剂筛选、抑制常数测定和选择性测定所获得的数据。结果表明,在筛选的所有75个化合物中,2-氨基-联吡啶并嘧啶1位和3位衍生物均表现出对SmChiA、SmChiB、AfChiB1、CeChtI、OvChtI、OfChtI、OfChtII、OfChi-h、HsChit1和AMCase一定的抑制活性,特别的,对应表1中的化合物2-8-14对HsChit1的抑制率为98.5%,对应表2中的化合物2-8-S47对AMCase的抑制率为86.4%,对应表2中的化合物2-8-S2对OfChi-h的抑制率为86.4%,对应表1中的化合物2-8-17对OfChtI的抑制率为67%,对应表1中的化合物2-8-21对OfChtII-C2的抑制率为80%,对应表2中的化合物2-8-S16对SmChiA的抑制率为90%,对应表2中的化合物2-8-S1对SmChiB的抑制率为96.2%,对应表1中的化合物2-8-18对AfChiB1的抑制率为53.4%,对应表2中的化合物2-8-S1对CeChtI的抑制率为90.2%,对应表2中的化合物2-8-S1对OvChtI的抑制率为86.3%。
附图说明
图1、图3、图5、图7、图9为对应表1中的化合物2-8-14对SmChiA、SmChiB、OfChi-h、HsChit1、AMCase和OvChtI的Ki值测定示意图。
图2、图4、图6、图8、图10为对应表2中的化合物2-8-S2对SmChiA、SmChiB、OfChi-h、HsChit1、AMCase和OvChtI的Ki值测定示意图。图11为对应表2中的化合物2-8-S1对SmChiA、SmChiB、OfChi-h、HsChit1、AMCase和OvChtI的Ki值测定示意图。
图1~11中:图1、图3、图5、图7、图9的横坐标[2-8-14(μM)]表示化合物的浓度,单位为μM;
图2、图4、图6、图8、图10的横坐标[2-8-S2(μM)]表示化合物的浓度,单位为μM;
图11的横坐标[2-8-S1(μM)]表示化合物的浓度,单位为μM;纵坐标1/v表示反应速率的倒数;图中3条直线对应不同的底物浓度下,1/v随化合物浓度的变化而变化的趋势,图1-图10从下到上底物浓度依次为50μM、30μM和15μM;图11从下到上底物浓度依次为20μM、10μM和5μM,3条直线的交点所对应的横坐标数值既为对应表1中的化合物2-8-14对SmChiA、SmChiB、OfChi-h、HsChit1和AMCase的抑制常数Ki,分别为3.5μM、0.41μM、0.39μM、0.05μM和4.0μM;对应表2中的化合物2-8-S2对SmChiA、SmChiB、OfChi-h、HsChit1和AMCase的抑制常数Ki,分别为2.4μM、58nM、9nM、1.1μM和9.7μM;对应表2中的化合物2-8-S1对OvChtI的抑制常数Ki为0.5μM。
具体实施方式
下述非限制性实施例可以使本领域的普通技术人员更全面地理解本发明,但不以任何方式限制本发明。任何熟悉本技术领域的技术人员在本发明披露的技术范围内,根据本发明的技术方案及其发明构思进行等同替换或改变均属于本发明保护范畴。
本发明实施例中所用的酶SmChiA,SmChiB,AfChiB1,CeChtI,OvChtI,OfChtI,OfChtII-C2,OfChi-h,HsChit1和AMCase如下述参考文献给出:
Chen W.;Qu M.;Zhou Y.;Yang Q.,Structural analysis of group IIchitinase(ChtII)catalysis completes the puzzle of chitin hydrolysis ininsects.J.Biol.Chem.2018,293,2652-2660.
Liu,T.;Chen,L.;Zhou,Y.;Jiang,X.;Duan,Y.;Yang,Q.,Structure,Catalysis,and Inhibition of OfChi-h,the Lepidoptera-exclusive InsectChitinase.J.Biol.Chem.2017,292,2080-2088.
Chen,L.;Zhou,Y.;Qu,M.;Zhao,Y.;Yang,Q.,Fully deacetylatedchitooligosaccharides act as efficient glycoside hydrolase family 18chitinaseinhibitors.J.Biol.Chem.2014,289,17932-40.
Garner,A.L.;Gloeckner,C.;Tricoche,N.;Zakhari,J.S.;Samje,M.;Cho-Ngwa,F.;Lustigman,S.;Janda,K.D.,Design,synthesis,and biological activities ofclosantel analogues:structural promiscuity and its impact on Onchocercavolvulus.J.Med.Chem.2011,54,3963-72.
Schuttelkopf,A.W.;Andersen,O.A.;Rao,F.V.;Allwood,M.;Rush,C.L.;Eggleston,I.M.;van Aalten,D.M.,Bisdionin C-a rationally designed,submicromolar inhibitor of family 18chitinases.ACS Med.Chem.Lett.2011,2,428-32.
表1和表2列举了筛选几丁质酶抑制剂过程中,重点考察的75个化合物。
表1.作为几丁质酶抑制剂的25个2-氨基-吡啶并哌啶类1位和3位衍生物筛选
表2.作为几丁质酶抑制剂的50个2-氨基-吡啶并哌啶类1位和3位衍生物筛选
实施例1
将几丁质酶SmChiA、SmChiB、AfChiB1、CeChtI、OvChtI、OfChtI、OfChtII-C2、OfChi-h、HsChit1和AMCase作为靶标,对表1和表2中列举的75个化合物进行抑制剂筛选。具体步骤如下:
正对照:设置3组平行正对照。在30℃反应温度,100μL反应体系的条件下,2nmol/L几丁质酶和50μmol/L底物(MU-(GlcNAc)2)在20mmol/L的pH 6.0的磷酸盐缓冲液中孵育30min,之后加入100μL 0.5mol/L碳酸钠溶液终止反应,反应液用360nm波长的激发光进行激发后测定450nm波长下的吸光度值。
实验组:设置3组平行实验组。在30℃反应温度,100μL反应体系的条件下,2nmol/L几丁质酶和50μmol/L底物(MU-(GlcNAc)2)以及对应表1、2表中浓度的化合物在20mmol/L的pH 6.0的磷酸盐缓冲液中孵育30min,之后加入100μL 0.5mol/L碳酸钠溶液终止反应,反应液用360nm波长的激发光进行激发后测定450nm波长下的吸光度值。
根据以下公式计算抑制活性
抑制百分数=(正对照-实验组)/正对照*100
对抑制剂进行筛选时,先针对几百个样品进行大样本、长时间的初筛,在初筛的基础上对初筛获得的阳性结果进行进一步的复筛(具体步骤同上)确认后获得最终数据,结果表明,在复筛的所有75个化合物中,2-氨基-联吡啶并嘧啶1位和3位衍生物对几丁质酶HsChit1、AMCase、OfChi-h、OfChtI、OfChtII-C2、SmChiA、SmChiB、AfChiB1、CeChtI和OvChtI均表现出一定的抑制活性,特别的,对应表1中的化合物2-8-14对HsChit1的抑制率为98.5%,对应表2中的化合物2-8-S47对AMCase的抑制率为86.4%,对应表2中的化合物2-8-S2对OfChi-h的抑制率为86.4%,对应表1中的化合物2-8-17对OfChtI的抑制率为67%,对应表1中的化合物2-8-21对OfChtII-C2的抑制率为80%,对应表2中的化合物2-8-S16对SmChiA的抑制率为90%,对应表2中的化合物2-8-S1对SmChiB的抑制率为96.2%,对应表1中的化合物2-8-18对AfChiB1的抑制率为53.4%,对应表2中的化合物2-8-S43对CeChtI的抑制率为90.2%,对应表2中的化合物2-8-S3对OvChtI的抑制率为94.6%。
实施例2
抑制常数Ki测定
SmChiA、SmChiB、OfChi-h、HsChit1和AMCase:MU-(GlcNAc)2作为底物,反应设置三组底物浓度梯度,终浓度分别为15μM、30μM和50μM。OvChtI:MU-(GlcNAc)3作为底物,反应设置三组底物浓度梯度,终浓度分别为5μM、10μM和20μM。在每组底物浓度下取多组适宜的化合物浓度梯度进行抑制活性测定。反应体系为100μL,缓冲环境为20mM磷酸盐缓冲液,pH6.0,酶终浓度为2nM,反应温度30℃,反应时间30min,之后加入100μL浓度为0.5M的碳酸钠溶液终止反应,释放的MU经由360nm激发光激发后于450nm波长下测定其吸光度值。数据采用Dixon法绘图,对应表1中的化合物2-8-14对SmChiA、SmChiB、OfChi-h、HsChit1和AMCase的抑制常数Ki,分别为3.5μM、0.41μM、0.39μM、0.05μM和4.0μM;对应表2中的化合物2-8-S2对SmChiA、SmChiB、OfChi-h、HsChit1和AMCase的抑制常数Ki,分别为2.4μM、58nM、9nM、1.1μM和9.7μM;对应表2中的化合物2-8-S1对OvChtI的抑制常数Ki为0.5μM。结果分别如图1、3、5、7、9;图2、4、6、8、10;图11所示。总之,在复筛的所有75个化合物中,2-氨基-吡啶并哌啶1位和3位衍生物对人类、盘尾丝虫、秀丽线虫、亚洲玉米螟、烟曲霉和粘质沙雷氏菌几丁质酶均表现出一定的抑制活性,显示出,本发明所述的化合物在生物学和化学生物学等领域有广泛的应用前景。
对于任何熟悉本领域的技术人员而言,在不脱离本发明技术方案范围情况下,都可利用上述揭示的技术内容对本发明技术方案作出许多可能的变动和修饰,或修改为等同变化的等效实施例。因此,凡是未脱离本发明技术方案的内容,依据本发明的技术实质对以上实施例所做的任何简单修改、等同变化及修饰,均应仍属于本发明技术方案保护的范围内。
Claims (4)
3.根据权利要求2所述的应用,其特征在于:权利要求1所述的抑制剂和/或其立体异构体在抑制人类壳三糖酶活性时,其在反应体系中使用的终浓度为不低于10μM;在抑制人类酸性哺乳动物几丁质酶活性时,其在反应体系中使用的终浓度为不低于20μM;在抑制亚洲玉米螟几丁质酶I活性时,其在反应体系中使用的终浓度为不低于50μM;在抑制亚洲玉米螟几丁质酶II活性时,其在反应体系中使用的终浓度为不低于25μM;在抑制亚洲玉米螟几丁质酶h活性时,其在反应体系中使用的终浓度为不低于1μM;在抑制粘质沙雷氏菌几丁质酶A活性时,其在反应体系中使用的终浓度为不低于10μM;在抑制粘质沙雷氏菌几丁质酶B活性时,其在反应体系中使用的终浓度为不低于1μM;在抑制烟曲霉几丁质酶B1活性时,其在反应体系中使用的终浓度为不低于10μM;在抑制秀丽隐杆线虫几丁质酶I活性时,其在反应体系中使用的终浓度为不低于20μM;在抑制盘尾丝虫几丁质酶I活性时,其在反应体系中使用的终浓度为不低于20μM。
4.如权利要求1所述的抑制剂和/或其立体异构体在制备抑制细菌生长、抗真菌感染、控制农业害虫和抗过敏及哮喘药物中的应用。
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201810439288.0A CN108467395B (zh) | 2018-05-09 | 2018-05-09 | 一种几丁质酶抑制剂及其应用 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201810439288.0A CN108467395B (zh) | 2018-05-09 | 2018-05-09 | 一种几丁质酶抑制剂及其应用 |
Publications (2)
Publication Number | Publication Date |
---|---|
CN108467395A CN108467395A (zh) | 2018-08-31 |
CN108467395B true CN108467395B (zh) | 2020-12-11 |
Family
ID=63260902
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN201810439288.0A Active CN108467395B (zh) | 2018-05-09 | 2018-05-09 | 一种几丁质酶抑制剂及其应用 |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN108467395B (zh) |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN109824669A (zh) * | 2018-12-21 | 2019-05-31 | 西南大学 | 哌啶螺环酒石酸类化合物制备及应用 |
CN110540571B (zh) * | 2019-08-08 | 2021-07-06 | 云南农业大学 | 三七皂苷r1衍生物及其应用 |
CN111406752B (zh) * | 2020-04-23 | 2021-07-23 | 中国农业科学院植物保护研究所 | 二氢吡咯并吡唑酮类衍生物作为几丁质酶抑制剂或杀线虫剂的应用 |
CN114105986B (zh) * | 2021-12-06 | 2024-09-27 | 华东理工大学 | 一种芳香稠环二酮类化合物及其制备方法与应用 |
CN114249697B (zh) * | 2021-12-31 | 2023-04-07 | 中国农业大学 | 含甲基胍基脲的氮杂大环内酯化合物及其制备方法与应用 |
CN114957135B (zh) * | 2022-06-23 | 2024-04-12 | 河北农业大学 | 一种偶氮嘧啶类化合物的应用 |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN1474651A (zh) * | 2000-09-19 | 2004-02-11 | 核黄素和黄素衍生物作为几丁质酶抑制剂的用途 | |
CN103641825A (zh) * | 2013-11-01 | 2014-03-19 | 大连理工大学 | 一种萘酰亚胺衍生物及其作为酶抑制剂、杀虫剂 |
CN106659715A (zh) * | 2013-12-20 | 2017-05-10 | 药物发现研究所 | 取代的氨基三唑及其使用方法 |
CN106854144A (zh) * | 2016-12-16 | 2017-06-16 | 大连理工大学 | 一种抑制剂及其在抑制几丁质酶和己糖胺酶活性中的应用 |
CN107223663A (zh) * | 2017-04-24 | 2017-10-03 | 大连理工大学 | 春雷霉素及其衍生物为几丁质酶抑制剂的应用 |
-
2018
- 2018-05-09 CN CN201810439288.0A patent/CN108467395B/zh active Active
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN1474651A (zh) * | 2000-09-19 | 2004-02-11 | 核黄素和黄素衍生物作为几丁质酶抑制剂的用途 | |
CN103641825A (zh) * | 2013-11-01 | 2014-03-19 | 大连理工大学 | 一种萘酰亚胺衍生物及其作为酶抑制剂、杀虫剂 |
CN106659715A (zh) * | 2013-12-20 | 2017-05-10 | 药物发现研究所 | 取代的氨基三唑及其使用方法 |
CN106854144A (zh) * | 2016-12-16 | 2017-06-16 | 大连理工大学 | 一种抑制剂及其在抑制几丁质酶和己糖胺酶活性中的应用 |
CN107223663A (zh) * | 2017-04-24 | 2017-10-03 | 大连理工大学 | 春雷霉素及其衍生物为几丁质酶抑制剂的应用 |
Non-Patent Citations (2)
Title |
---|
Characterization and structure-activity relationship study of iminodipyridinopyrimidines as novel hepatitis C virus inhibitor;Dong-Sik Park 等;《European Journal of Medicinal Chemistry》;20170906;第140卷;第65-73页 * |
Enhanced Cellular Uptake of a New, in Silico Identified Antitubercular Candidate by Peptide Conjugation;Kata Horváti 等;《Bioconjugate Chem.》;20120419;第23卷(第5期);第900-907页 * |
Also Published As
Publication number | Publication date |
---|---|
CN108467395A (zh) | 2018-08-31 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN108467395B (zh) | 一种几丁质酶抑制剂及其应用 | |
Ben-Shalom et al. | Controlling gray mould caused by Botrytis cinerea in cucumber plants by means of chitosan | |
Vasyukova et al. | Modulation of plant resistance to diseases by water-soluble chitosan | |
Odjakova et al. | The complexity of pathogen defense in plants | |
Chen et al. | Nematode chitin and application | |
Nemestothy et al. | Phytoalexin accumulation, phenylalanine ammonia lyase activity and ethylene biosynthesis in fosetyl-Al treated resistant and susceptible tobacco cultivars infected with Phytophthora nicotianae var. nicotianae | |
Msogoya et al. | Identification and management of microbial contaminants of banana in vitro cultures | |
Li et al. | Antifungal properties and mechanisms of three volatile aldehydes (octanal, nonanal and decanal) on Aspergillus flavus | |
EP2524597B1 (en) | Use of an agent for enhancing resistance to disease of cucurbitaceae plant and a method for controlling plant disease using the agent | |
Borad et al. | Pathogenesis-related proteins for the plant protection | |
EP3780957B1 (en) | Synergistic mixture of plant defense inductors | |
Sami | Azadirachta indica derived compounds as inhibitors of digestive alpha-amylase in insect pests: Potential bio-pesticides in insect pest management | |
CN111406752B (zh) | 二氢吡咯并吡唑酮类衍生物作为几丁质酶抑制剂或杀线虫剂的应用 | |
CN107223663B (zh) | 春雷霉素及其衍生物为几丁质酶抑制剂的应用 | |
Meena et al. | Role of microbial bioagents as elicitors in plant defense regulation | |
US11678669B2 (en) | Process for eliciting a plant by means of edible macroscopic fungal extracts | |
Jaber et al. | Identification of two compounds able to improve flax resistance towards Fusarium oxysporum infection | |
Lahoz et al. | Induction of systemic resistance to Erysiphe orontii cast in tobacco by application on roots of an isolate of Gliocladium roseum Bainier | |
Naher et al. | mRNA expression of EgCHI1, EgCHI2, and EgCHI3 in oil palm leaves (Elaeis guineesis Jacq.) after treatment with Ganoderma boninense pat. and Trichoderma harzianum Rifai | |
JP6997456B2 (ja) | 植物の病害抵抗性増強用又は植物病害防除用組成物及びそれらの使用方法 | |
Oh et al. | Development of Integrated Pest Management Techniques Using Biomass for Organic Farming (Ⅰ): Suppresssion of Late Blight and Fusarium Wilt of Tomato by Chitosan Involving Both Antifungal and Plant Activating Activities: Suppresssion of Late Blight and Fusarium Wilt of Tomato by Chitosan Involving Both Antifungal and Plant Activating Activities | |
Li et al. | Acetylsalicylic acid (ASA) suppressed Fusarium rot development and neosolaniol (NEO) accumulation by activating phenylpropane metabolism in muskmelon fruit | |
Ashwin et al. | Transcriptional reprogramming of major defense-signaling pathways during defense priming and sugarcane-Colletotrichum falcatum interaction | |
CN113180043B (zh) | 一种几丁质水解酶抑制剂在调节昆虫生长活性中的应用 | |
CN113207883B (zh) | 双吲哚吡咯类化合物的应用 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PB01 | Publication | ||
PB01 | Publication | ||
SE01 | Entry into force of request for substantive examination | ||
SE01 | Entry into force of request for substantive examination | ||
GR01 | Patent grant | ||
GR01 | Patent grant |