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人的鐵調素定量分析酶聯免疫檢測試劑盒

本試劑盒僅供科研使用 。用於體外定量檢測人血清 、血漿或細胞培養上清液中的 HEPCIDIN 濃度 。使用前請仔細閱讀說明書並檢查試劑

組分是否完整 。如有產品包裝破損或質量投拆 ，請在收到貨一個月之內聯係尊龍凱時 。如有其它疑問請登錄上海尊龍凱時生物科技有限公司網站或

致電本公司 。

hepcidin簡介 ：

鐵調素（HAMP）是一種屬於鐵調素家族的分泌蛋白 。是哺乳動物的鐵循環的關鍵調控分子 。在體內主要由肝髒 、心髒以及腦產生 。

鐵調素前體蛋白經過不同剪切後 ，可形成20 、22和25個氨基酸的不同氨基酸數量的成熟多肽 ，這些多肽內均富含能形成分子內的二硫

鍵的半胱氨酸 ，這些分子內的二硫鍵能使β 片層結構更穩定 。

鐵調素主要作用是介導鐵的體內平衡的生理過程 ，在巨噬細胞的存貯及小腸吸收鐵的過程中起重要作用 。在如炎症等狀態下 ，鐵調素

異常升高 ，因為巨噬細胞和肝細胞中的鐵富集體的出現使得血清鐵濃度迅速下降 ，同時 ，由於鐵調素的異常升高 ，使得鐵的吸收也會下降 ，

這些效果均會使得血清中鐵濃度的不足 ，紅細胞發育不良而造成貧血 。當鐵調素的濃度很低時 ，如血色沉著病患者 ，經過轉鐵蛋白介異的

鐵過度吸收會造成鐵過載 。

檢測原理:

本試劑盒采用雙抗體夾心ELISA法檢測樣本中HEPCIDIN 的濃度 。HEPCIDIN 捕獲抗體已預包被於酶標板上 ，當加入標本或參考品時 ，其

中的HEPCIDIN 會與捕獲抗體結合 ，其它遊離的成分通過洗滌的過程被除去 。當加入生物素化的抗人HEPCIDIN 抗體後 ，抗人HEPCIDIN 抗體

與HEPCIDIN 接合 ，形成夾心的免疫複合物 ，其它遊離的成分通過洗滌的過程被除去 。隨後加入辣根過氧化物酶標記的親合素 。生物素與親

合素特異性結合 ，親合素連接的酶就會與夾心的免疫複合物連接起來 ；其它遊離的成分通過洗滌的過程被除去 。最後加入顯色劑，若樣本

中存在HEPCIDIN 將會形成免疫複合物 ，辣根過氧化物酶會催化無色的顯色劑氧化成藍色物質 ，在加入終止液後呈黃色 。通過酶標儀檢測 ，

讀其450nm處的OD值 ，HEPCIDIN 濃度與OD450值之間呈正比 ，通過參考品繪製標準曲線 ，對照未知樣本中OD值 ，即可算出標本中HEPCIDIN 濃

度 。

人HEPCIDIN定量分析酶聯免疫檢測試劑盒組成:

組分 規格（96T/48T）

人HEPCIDIN預包被板 12條/6條

5×標準品稀釋液 20ml/10ml

人HEPCIDIN標準品 2/1支(凍幹)

人HEPCIDIN生物素化抗體 10ml/5ml

親和素連接的HRP酶 10ml/5ml

濃縮洗滌液 20× 30ml/15ml

TMB底物 10ml/5ml

中止液 5ml/3ml

封板膠紙 3/2張

說明書 1份

標本收集:

1.標本的收集請按下列流程進行操作 ；

A.細胞上清標本離心去除懸浮物後即可 ；

B.血清標本應是自然凝固後 ，取上清 ，避免在冰箱中凝固血液 ；

C.血漿標本 ，推薦用EDTA的方法收集

D.若待測樣本不能及時檢測 ，標本收集後請分裝 ，凍存於－20℃ ，避免反複凍融 。

2.血清標本不應添加任何防腐劑或抗凝劑；

3.標本應清澈透明 ，檢測前樣本中如有懸浮物應通過離心去除 。

4.請勿使用溶血 ，高血脂或汙染的標本檢測 ，否則結果將不準確 。注意事項:

1.試劑盒請保存在2～8℃ 。

2.濃縮洗滌液因在低溫下可能有結晶 ，請水浴加熱使結晶完全溶解後再配製工作液 。

3.標準品複溶加樣後 ，剩餘部份請丟棄 。

4.底物請勿接觸氧化劑和金屬 。

5.加樣時 ，請及時更換槍頭 ，避免交叉汙染 。

6.嚴禁混用不同批號的試劑盒組份 。

7.充分混勻對保證反應結果的準性很重要 ，在加液後請輕輕叩擊邊緣以保證混勻 。

8.室溫反應 ，請嚴格控製在25～28℃ 。

9.洗滌過程是至關重要的 ，洗滌不充分會使精確度下降並導致結果誤差較大 。

10.試驗中標準品和樣本檢測時建議作雙複孔。

11.加樣過程中避免氣泡的產生 。

12.血清和血漿標本的檢測時 ，檢測抗體的孵育時間應適當延長 。

檢測前準備工作:

1. 試劑盒自冰箱中取出後應置室溫（25-28℃）平衡20分鍾 ；每次檢測後剩餘試劑請及時於2～8℃保存 。

2. 將濃縮洗滌液用雙蒸水或去離子水稀釋(1份加19份水) 。

3.如有5X準品稀釋液 ，請按所需量用雙蒸水或去離子水稀釋(1份加4水) 。

4.標準品: 按標簽複溶體積加入1X標準品稀釋液複溶使HEPCIDIN終濃度達到200pg/ml ，室溫反應 ，請嚴格控製在25～28℃ ，靜置15~20分鍾

後輕輕混懸（建議抽吸幾次）待徹底溶解 ，用標準品稀釋液倍比梯度稀釋後依次加入檢測孔中 。（標準曲線取七個點 ，最高濃度為200 pg/ml,

標準品稀釋液直接加入作為0濃度.）

洗滌方法:

自動洗板機或人工洗板 ：每孔洗滌液為300ul ，注入與吸出間隔15-30秒 。洗板5次 。最後一次洗板完成後將板倒扣著在厚吸水紙上用力拍幹 。

實驗過程需自備的材料 ：

1.不同規格的加樣槍及相應的槍頭 ；

2.酶標儀 ；

3.自動洗板機 ；

4.去離子水或雙蒸水 ；

操作步驟:

1.通過計算並確定一次性實驗所需的板條數 ，取出所需板條放置在框架內 ，暫時用不到板條請放回鋁箔袋密封 ，保存於4℃ 。

2.建議設置本底較正孔 ，即空白孔,設置方法為該孔隻加TMB顯色液和中止液 。每次實驗均需做標準品對照並畫出標準曲線 。

3.分別將標本或不同濃度標準品(100ul/孔)加入相應孔中 ，用封板膠紙封住反應孔 ，室溫（25-28℃）孵育120分鍾 。對於血清或血漿標本 ，

以100~1000倍稀釋開始 ，如果預實驗 ，從200倍開始稀釋 。

4.洗板5次 ，且最後一次置厚吸水紙上拍幹 。

5.加入生物素化抗體工作液(100ul/孔) 。用封板膠紙封住反應孔 ，室溫（25-28℃）孵育60分鍾 。

6.洗板5次 ，且最後一次置厚吸水紙上拍幹 。

7.加入親和素連接的HRP酶工作液(100ul/孔) 。用封板膠紙封住反應孔 ，避光室溫（25-28℃）孵育20分鍾 。

8.洗板5次 ，且最後一次置厚吸水紙上拍幹 。

9.加入顯色劑TMB100ul/孔 ，避光室溫（25-28℃）孵育20分鍾 。

10.加入中止液50ul/孔,混勻後即刻測量OD450值 。

上海尊龍凱時生物科技有限公司 www.ruianjituan.comhepcidin參考標準曲線

0

0.5

1

1.5

2

2.5

3

3.5

4

0 6.25 12.5 2 5 5 0 100 200

濃度（pg/jl）

O

D值

上海尊龍凱時生物科技有限公司 www.ruianjituan.com

結果判斷:

1.複孔的值在20%的差異範圍內結果才有效 ，複孔的值平均後可作為測量值 。

2.每個標準品或標本的OD值應減去本底校正孔的OD值 。

3.手工繪製標準曲線。以標準品濃度作橫坐標 ，OD值作縱坐標 ，以平滑線連接各標準品的坐標點 。通過標本的OD值可在標準曲線上查出其

濃度。

4.若標本OD值高於標準曲線上限 ，應適當稀釋後重測 ，計算濃度時應乘以稀釋倍數 。

典型數值和參考曲線

濃度pg/ml 典型OD值1 典型OD值2 OD平均值

0 0.062 0.059 0.0605

6.25 0.189 0.186 0.1875

12.5 0.304 0.314 0.309

25 0.527 0.526 0.5265

50 1.052 0.988 1.02

100 2.255 2.233 2.244

200 3.82 3.792 3.806

人HEPCIDIN參考標準曲線

注意 ：本圖僅供參考 ，應以同次試驗標準品所繪標準曲線計算標本含量 。

靈敏度 ，特異性和重複性:

1.靈敏度 ：多次重複結果表明 ，最小檢出量為3.2pg/ml

2.特異性 ：與人的α 2-Macroglobulin不反應 ，與小鼠的hepcidin沒有交叉反應性 。本試劑盒檢測總Hepcidin的含量 ，即能檢測Hepcidin-20,

Hepcidin-22 Hepcidin-24和 Hepcidin-25 。

3.重複性 ：板內 ，板間變異係數均<10%.

參考文獻:

1. Park CH, Valore EV, Waring AJ, et al. Hepcidin, a urinary antimicrobial peptide synthesized in the liver. J Biol

Chem 2001; 276; 7806-7810

2. Camaschella C, Silvestri L. Molecular mechanisms regulating hepcidin revealed by hepcidin

disorders. ScientificWorldJournal. 2011; 11:1357-66.

3. Girelli D et al. Reduced serum hepcidin levels in patients with chronic hepatitis C. J. Hepatol.2009; 51(5):845-52.

4. Krause A, Neitz S, Magert HJ, et al. LEAP-1, a novel highly-disulfide bonded human peptide, exhibits anti-microbialactivity.

FEBS Lett 2000; 480; 147-150

5. Scamuffa N, et al. Regulation of prohepcidin processing and activity by the subtilisin-like

proprotein convertases Furin, PC5, PACE4 and PC7. Gut. 2008; 57(11):1573-82.

6. Kulaksiz H, et al. Pro-hepcidin: expression and cell-specific localization in the liver and its regulation in

hereditaryhemochromatosis, chronic renal insufficiency, and renal anemia. GUT 2004; 53: 735-743

7. Kroot J et al. Hepcidin in Human Iron Disorders: Diagnostic Implications. Clin. Chem. 2011;57:121650–1669.

上海尊龍凱時生物科技有限公司 www.ruianjituan.com上海尊龍凱時生物科技有限公司 www.ruianjituan.com

ELISA Kit for the Quantitative Analysis of Human HEPCIDIN

The human HEPCIDIN ELISA (enzyme-linked immunosorbent assay) kit is used for detection of human HEPCIDIN in cell culture

supernatants,human serum and plasma.THE ELISA KIT IS FOR RESEARCH USE ONLY. Please read this instruction manual carefully

and check out the material provided before use, and you can contact with our company if any questions. You can enter our website or call

us for other aim.

Introduction

Interleukin-4 is a pleiotropic cytokine, mainly produced by activated T-lymphocyte cells, mast cells and bone marrow stromal cells.

HEPCIDIN exhibits in molecular weight forms between 15 and 19 kDa based on variable glycosylation.HEPCIDIN regulates the function

of the immune response in variety of cells. HEPCIDIN participates in at least several B-cell activation processes as well as other cell

types. It is a costimulator of DNA-synthesis. It induces the expression of class II MHC molecules on resting B-cells. It enhances both

secretion and cell surface expression of IgE and IgG1; it also regulates the expression of the low affinity Fc receptor for IgE (CD23) on

both lymphocytes and monocytes.

HEPCIDIN plays an important role in regulating the subtype Conversion of antibodies, it is also the important regulator involved in

the differentiation of Th cell precursor into Th2 cells, and then indirectly regulates the humoral immune response and the generation of

antibodies. In addition, genetic variations in IL4 may be a cause of susceptibility to ischemic stroke , cerebrovascular accident or cerebral

infarction.

Principles of the Test

The kits is a solid sandwich enzyme-linked immunosorbent assay for detection of human HEPCIDIN. An anti-human HEPCIDIN

monoclonal antibody has been absorbed onto the wells of the microtiter strips provided. Samples including specimens or standards were

pipetted into wells. The human HEPCIDIN in specimens or standards would be captured by the coated antibody and the free others were

removed by washing. The human HEPCIDIN biotin-conjugated antibody were added and binds to human HEPCIDIN captured by the first

antibody, which formed a sandwich. Streptavidin-HRP would be added and binds to the biotin conjugated antibody, then free

Streptavidin-HRP would be removed during a wash step. After this, subtrate solution would be added and catalyzed by the HRP, and a

coloured product is formed. The intensity of the colored product is used to calculate in proportion to the amount of human HEPCIDIN in

the original specimen.

Materials provided with the kits:

Reagent 96/48Test Kit

Human HEPCIDIN Antibody-Coated

Wells

12 strips/6 strips

5×Standard Diluent 20ml/10ml

Human HEPCIDIN Standard 2/1vial(s)

Human HEPCIDIN Detetion Antibody 10ml/5ml

Streptavidin-HRP 10ml/5ml

Wash Buffer Concentrate 20× 30ml/15ml

TMB 10ml/5ml

Stop Solution 5ml/3 ml

Plate Covers 3/2

Complete Instruction Manual 1Specimen Collection

1. Collecting specimen as following:

A. The particulate of the cell culture supernatants should be removed before use.

B. Serum was obtained from clot at room temperature.

C. Please collect plasma with EDTA.

D. Assay immediately or store samples at -20℃. Avoid free-thaw cycles.

2. Antiseptic and anticoagulant should not appear in Serum

samples.

3. Any particulate should be removed from samples before use.

4. Do not use grossly hemolyzed or lipemic samples.

Precautions for use:

1.Please storage the Kit at 2～8℃ 。

2. Washing buffer concentrate may have crystal in low temperature, and you can melt its in water-bath before use.

3. Please discard the remains after use of the dissolved standard.

4. Avoid contact of substrate solution with oxidizing agents and metal.

5. Usage of disposable pipette tips avoid microbial contamination or cross-contamination of reagents or specimens.

6. Do not mix or substitute reagents with those from other lots or other sources.

7. To ensure the adequate mixure of added reagents, please tap gently the plate after the wells were filled with liquid.

8. Incubation temperature should be 25～28℃.

9. Wash step was crucial for whole assay process.

10. Duplicate wells of the same sample were recommended in

assay process.

11. Avoid the foam while pour the liquid into wells.

12．For serum or plasma samples ,the biotin-conjugated antibody should be incubate for at least 90 minutes.

Reagent Preparation

1.The reagents should be warmed up to room temperature before use.The remanent reagents must reseal and put into refrigeratory

again as soon as possible.

2.Dilute 1ml of wash buffer Concentrate into 19ml deionized or distilled water to work.

3. If you have a 5x standard diluent, please dilute it with double steaming water or deionized water.

4. Add standard diluent to the bottle according to the volume of the label and wait15 minutes for complete dissolution. Incubation

temperature should be 25- 28℃ 。.And in turn add the half concentration diluent by standard diluent .

Wash step:

Automated microplate washer or operating by pipette: Each well should be pour into300ul wash buffer and soak 15 or 30 seconds,then

be aspirated, five times process were repeated. After the last wash, remove remaining wash buffer by aspirating. Invert the plate and blot

it against clean paper towels.

Materials Required But Not Provided

1. pipettes and pipette tips

2. Microwell strip reader capable of reading at 450 nm (540 nm as ptional reference wave length)

3. automated microplate washer

4.Glass-distilled or deionized water

Assay procedure

1.The needed strips were putted into the frame, the remains were returned into foil pouch and resealed.

2.Blank well were recommended, which only color reagent and stop solution be added. It is suggested that each testing with gradient

density of standard for standard curve.

3.Add 100ul of standard or sample.Cover with the Plate Covers provided.Incubate for 2 hours at room temperature If is plasma serum

samples, different sample dilution ratio is different, generally in the range of 100 ~ 1000 times, if there is no definite scope, advice from

200 times dilution, if the sample concentration is too high, more than test scope, please increase after diluted times dilution test again.

4.Five times wash process were repeated.

5.Add 100ul of detetion antibody. Cover with the Plate Covers provided.Incubate for 1 hour at room temperature.

6.Five times wash process were repeated.

7.Add 100ul of Streptavidin-HRP. Cover with the Plate Covers provided. Lucifugal incubation for 20 minutes at room temperature.

8.Five times wash process were repeated.

9.Add 100ul of TMB ，Lucifugal incubation for 20 minutes at room temperature.

10.Add 50ul of stop solution to each well, determine the optical

density of each well within 10 minutes.

Calculation of Results

1.Duplicates should be within 20 percent of the mean. Average absorbance values for each set of duplicate samples were used as

detection results.

2.The blank absorbance values of subtract should be deducted.

3.Drawing a best fit curve through the points of graph. Draw the standard curve by plotting assayed OD valure (on the Y axis) vs.

concentration (on the X axis). The sample concentration was obtained based on its OD value founding in the standard concentration

curve.

4.If the values obtained are not within the expected range of the standard, Samples should be dilute and assay again

Typical Data and Standard Curve

concentrati

on (pg/ml)

Typical data 1 Typical data 2 Average

0 0.062 0.059 0.0605

6.25 0.189 0.186 0.1875

12.5 0.304 0.314 0.309

25 0.527 0.526 0.5265

50 1.052 0.988 1.02

100 2.255 2.233 2.244

200 3.82 3.792 3.806

Human HEPCIDIN Standard Curve

Sensitivity,Specificity, Repeatability

Sensitivity: repeated assays were evalsuated and the minimum detectable dose was 3.2pg/ml.

Specificity : : No significant cross-reactivity or interference with human α2-Macroglobulin and mouse hepcidin. This Kit recognizes

human Hepcidin-20, human Hepcidin-22,human Hepcidin-24, and human Hepcidin-25.

Repeatability: The coefficient of variation between wells or plates is less than 10 percent.

REFERENCES:

1. Park CH, Valore EV, Waring AJ, et al. Hepcidin, a urinary antimicrobial peptide synthesized in the liver. J BiolChem 2001; 276; 7806-7810

2. Camaschella C, Silvestri L. Molecular mechanisms regulating hepcidin revealed by hepcidin

disorders. ScientificWorldJournal. 2011; 11:1357-66.

3. Girelli D et al. Reduced serum hepcidin levels in patients with chronic hepatitis C. J. Hepatol.

2009; 51(5):845-52.

4. Krause A, Neitz S, Magert HJ, et al. LEAP-1, a novel highly-disulfide bonded human peptide, exhibits anti-microbialactivity.

FEBS Lett 2000; 480; 147-150

5. Scamuffa N, et al. Regulation of prohepcidin processing and activity by the subtilisin-like

proprotein convertases Furin, PC5, PACE4 and PC7. Gut. 2008; 57(11):1573-82.

6. Kulaksiz H, et al. Pro-hepcidin: expression and cell-specific localization in the liver and its regulation in

hereditaryhemochromatosis, chronic renal insufficiency, and renal anemia. GUT 2004; 53: 735-743

7. Kroot J et al. Hepcidin in Human Iron Disorders: Diagnostic Implications. Clin. Chem. 2011;57:121650–1669.

上海尊龍凱時生物科技有限公司 www.ruianjituan.com