在酶免疫分析(EIA)中,一種酶能催化特定的底物, 將其轉(zhuǎn)化為有可檢測(cè)信號(hào)的產(chǎn)物,該技術(shù)是生物醫(yī)藥基礎(chǔ)研究、臨床檢驗(yàn)和衛(wèi)生檢驗(yàn)的關(guān)鍵技術(shù)。傳統(tǒng)的EIA采用色原底物測(cè)量可見(jiàn)光的吸光度, 隨著酶免疫分析技術(shù)的發(fā)展,不斷和熒光、發(fā)光技術(shù)以及儀器自動(dòng)化相融合,日臻完善[3]。近幾年以來(lái),納米材料開(kāi)始作為生物納米模擬酶被廣泛研究。Yan 等[4]發(fā)現(xiàn) Fe3O4磁性納米顆粒可以催化H2O2氧化過(guò)氧化物酶底物 3,3’,5,5’-四甲基聯(lián)苯胺(TMB)、重氮氨基苯(DAB)和鄰苯二胺(OPD)發(fā)生顏色變化。 與天然酶檢測(cè)相比,具有穩(wěn)定和成本低的優(yōu)點(diǎn)。百靈威作為專業(yè)試劑供應(yīng)商,提供常用酶分析檢測(cè)底物和生物納米材料, 包括辣根過(guò)氧化物酶底物、堿性磷酸酶底物、β-D-半乳糖苷酶底物、金屬納米顆粒、納米微球、碳納米管等。
- 產(chǎn)品靈敏度高
- 易于配置保存,穩(wěn)定性強(qiáng)
- 種類多樣,現(xiàn)貨庫(kù)存
圖 1:a 含有GSH的檢測(cè)機(jī)理示意圖,b 不含有GSH的檢測(cè)機(jī)理示意圖[1]。
圖 2:Fe3O4納米顆粒催化氧化三種酶底物 TMB, DAB 和 OPD 發(fā)生不同的顏色變化示意圖[4]。
圖 3:應(yīng)用光催化的硫化鎘納米粒子檢測(cè)葡萄糖氧化酶和谷胱甘肽還原酶[2]。
References
[1] Ni P, Sun Y, Dai H, et al. Highly sensitive and selective colorimetric detection of glutathione based on Ag[I] ion–3,3′,5,5′-tetramethylbenzidine (TMB)[J]. Biosensors & Bioelectronics, 2014, 63C:47-52.
[2] Grinyte R, Garai-Ibabe G, Saa L, et al. Application of photocatalytic cadmium sulfide nanoparticles to detection of enzymatic activities of glucose oxidase and glutathione reductase using oxidation of 3,3′,5,5′-tetramethylbenzidine[J]. Analytica Chimica Acta, 2015, 881:131-138.
[3] Lin Lin, Dongmin Shi, Quanfa Li,等. Detection of T4 polynucleotide kinase based on a MnO2 nanosheet-3,3′,5,5′-tetramethylbenzidine (TMB) colorimetric system[J]. Analytical Methods, 2016, 8(20):4119-4126.
[4] 李麗麗. 基于微納米材料過(guò)氧化物模擬酶特性的生物傳感器研究[D]. 西華師范大學(xué), 2015.
■ 過(guò)氧化物酶底物
產(chǎn)品編號(hào)
|
產(chǎn)品名稱
|
CAS
|
包裝規(guī)格
|
602529
|
4-Aminoantipyrine, 98%
4-氨基安替比林, 98%
|
83-07-8
|
25 g
100 g
500 g
|
213644
|
3-Dimethylaminobenzoic acid, 99%
3-二甲氨基苯甲酸, 99%
|
99-64-9
|
25 g
100 g
500 g
|
236213
|
5-Aminosalicylic acid, 98.5%
5-氨基水楊酸, 98.5%
|
89-57-6
|
5 g
25 g
100 g
|
185223
|
2,2'-Azino-bis(3-ethylbenzothiazoline-6-sulfonic acid) diammonium salt/ABTS, 98%
2,2'-聯(lián)氮雙(3-乙基苯并噻唑啉-6-磺酸)二銨鹽, 98%
|
30931-67-0
|
1 g
5 g
25 g
|
504147
|
3,3'-Dimethoxybenzidine dihydrochloride, 99%
3,3'-二甲氧基聯(lián)苯胺二鹽酸鹽, 99%
|
20325-40-0
|
5 g
25 g
100 g
|
292086
|
3,3',5,5'-Tetramethylbenzidine dihydrochloride, 98%
3,3',5,5'-四甲基聯(lián)苯胺二鹽酸鹽, 98%
|
64285-73-0
|
1 g
5 g
25 g
|
433886
|
3-(4-Hydroxyphenyl)propionic acid, 99%
3-(4-羥苯基)丙酸, 99%
|
501-97-3
|
5 g
25 g
100 g
|
293137
|
7-Hydroxycoumarin-3-carboxylic acid ethyl ester, 98%
7-羥基香豆素-3-羧酸乙酯, 98%
|
6093-71-6
|
25 mg
500 mg
1 g
|
■ 堿性磷酸酶底物
產(chǎn)品編號(hào)
|
產(chǎn)品名稱
|
CAS
|
包裝規(guī)格
|
132283
|
Adenosine, 99%
腺苷, 99%
|
58-61-7
|
5 g
25 g
100 g
|
545833
|
4-Nitrophenyl β-D-lactopyranoside, 98%
4-硝基苯基 β-D-吡喃乳糖苷, 98%
|
4419-94-7
|
50 mg
100 mg
|
141887
|
5-Bromo-4-chloro-3-indolyl phosphate disodium salt, 98%
5-溴-4-氯-3-吲哚磷酸二鈉鹽, 98%
|
102185-33-1
|
50 mg
250 mg
1 g
|
150020
|
5-Bromo-6-chloro-3-indolyl phosphate p-toluidine salt, 98%
(5-溴-6-氯-3-吲哚基)磷酸對(duì)甲苯胺鹽, 98%
|
6769-80-8
|
50 mg
250 mg
|
472252
|
o-Dianisidine, 98%
鄰聯(lián)茴香胺, 98%
|
119-90-4
|
5 g
25 g
100 g
|
254303
|
p-Nitrophenyl phosphate disodium salt hexahydrate, 98%
對(duì)硝基苯磷酸二鈉鹽六水合物, 98%
|
333338-18-4
|
1 g
5 g
25 g
|
1084029
|
4-Nitrophenyl phosphate disodium salt hexahydrate, 98%
4-硝基苯基磷酸二鈉鹽六水合物, 98%
|
4264-83-9
|
1 g
5 g
25 g
|
272074
|
Phenolphthalein monophosphate di(cyclohexylammonium) salt, 90%
酚酞單磷酸酯雙環(huán)己基銨鹽, 90%
|
14815-59-9
|
1 g
5 g
|
239270
|
α-Ketoglutaric acid, 99%
α-酮戊二酸, 99%
|
328-50-7
|
25 g
100 g
500 g
|
■ β-半乳糖苷酶底物
產(chǎn)品編號(hào)
|
產(chǎn)品名稱
|
CAS
|
包裝規(guī)格
|
440990
|
5-Bromo-4-chloro-3-indolyl β-D-galactopyranoside, 99%
5-溴-4-氯-3-吲哚基 β-D-吡喃半乳糖苷, 99%
|
7240-90-6
|
100 mg
1 g
|
184406
|
2-Chloro-4-nitrophenyl β-D-galactopyranoside, 98%
2-氯-4-硝基苯基 β-D-吡喃半乳糖苷, 98%
|
123706-60-5
|
1 g
|
247160
|
4-Nitrophenyl β-D-galactopyranoside, 98%
4-硝基苯基 β-D-吡喃半乳糖苷, 98%
|
3150-24-1
|
1 g
5 g
|
446877
|
2-Nitrophenyl β-D-galactopyranoside, 98%
5-溴-4-氯-3-吲哚基 β-D-吡喃半乳糖苷, 98%
|
369-07-3
|
100 mg
1 g
|
■ 熒光酶底物
產(chǎn)品編號(hào)
|
產(chǎn)品名稱
|
CAS
|
包裝規(guī)格
|
433521
|
D-Luciferin potassium salt, 98%
D-熒光素鉀鹽, 98%
|
115144-35-9
|
5 mg
25 mg
100 mg
|
308290
|
D-Luciferin sodium salt, 98%
D-熒光素鈉鹽, 98%
|
103404-75-7
|
5 mg
25 mg
100 mg
|
106094
|
3-Aminophthalhydrazide monosodium salt, 98%
3-氨基鄰苯二酰肼單鈉鹽, 98%
|
20666-12-0
|
1 g
5 g
25 g
|
393715
|
5-Fluoroorotic acid hydrate, 98%
5-氟乳清酸水合物, 98%
|
703-95-7
|
100 mg
1 g
5 g
|
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