英文名稱：Recombinant Mouse Insulin Like Growth Factor-1
中文簡稱：【mIGF1】重組小鼠胰島素樣生長因子-1

Recombinant Mouse Insulin Like Growth Factor-1 【mIGF1】重組小鼠胰島素樣生長因子-1 細(xì)胞因子產(chǎn)品描述：

胰島索樣生長因子一1(Insulin―like Growth Factor―l，IGF 1)是胰島素樣生長因子的重要成員，與胰島索高度同源。這個系統(tǒng)的其它成員還包括IGF Ⅱ、1GF―l受體(IGFIR)、IGF Ⅱ受體(IGFIIR)以及4種胰島素生長因子結(jié)合蛋白(IGF
BP-1、-2、-3、-4)。其中胰島素樣生長因子-1（Insulin-like growth factor-1，IGF-1）由70個氨基酸組成的單鏈堿性多肽分子，分子量為7649。它來源于體內(nèi)許多細(xì)胞，通過自分泌、旁分泌和內(nèi)分泌機(jī)制并與IGF-1受體（IGF-1R）結(jié)合發(fā)揮多種生理作用。作為一類促進(jìn)細(xì)胞生長、具有胰島素樣代謝效應(yīng)的因子。IGF-1受營養(yǎng)狀態(tài)、激素、遺傳等多因素的調(diào)節(jié)，在心血管疾病、內(nèi)分泌代謝病及腫瘤等的病理生理過程中發(fā)揮重要作用。
小鼠胰島素樣生長因子-1重組蛋白是在大腸桿菌中重組表達(dá)的，是一條單鏈、非糖基化的多肽鏈，包含有70個氨基酸，分子量為7600Da。該小鼠胰島素樣生長因子-1重組蛋白最終由標(biāo)準(zhǔn)的色譜技術(shù)純化出。
來源宿主---大腸桿菌中重組表達(dá)

Recombinant Mouse Insulin Like Growth Factor-1 【mIGF1】重組小鼠胰島素樣生長因子-1 細(xì)胞因子產(chǎn)品使用須知：
溶解：提供的小鼠胰島素樣生長因子-1(mIGF1)產(chǎn)品為過濾滅菌的白色凍干粉末；該凍干粉末是從含小鼠胰島素樣生長因子-1(mIGF1)的溶液（不含添加劑）中凍干產(chǎn)生的。我們建議加無菌的18MΩ-cm水以配制工作儲存液到100ug/ml，后繼實驗過程中可根據(jù)實驗要求進(jìn)一步稀釋。
保存：小鼠胰島素樣生長因子-1(mIGF1)凍干粉末在室溫可保存3周，或置于-18℃凍存用于長期保存。重新溶解后可以在4℃冷藏保存至少2-7天；如果想延長保存時間，建議分裝（加載體蛋白如0.1% HSA或 BSA）后置于-18℃凍存。請避免反復(fù)凍融。

Recombinant Mouse Insulin Like Growth Factor-1 【mIGF1】重組小鼠胰島素樣生長因子-1 細(xì)胞因子產(chǎn)品英文描述：
Synonyms 

Somatomedin C, IGF-I, IGFIA, IGF1.

Introduction 

The somatomedins, or insulin-like growth factors (IGFs), comprise a family of peptides that play important roles in mammalian growth and development. IGF1 mediates many of the growth-promoting effects of growth hormone (GH; MIM 139250). Early studies showed that growth hormone did not directly stimulate the incorporation of sulfate into cartilage, but rather acted through a serum factor, termed 'sulfation factor,' which later became known as 'somatomedin' (Daughaday et al., 1972). Three main somatomedins have been characterized: somatomedin C (IGF1), somatomedin A (IGF2; MIM 147470), and somatomedin B (MIM 193190) (Rotwein, 1986; Rosenfeld, 2003).

Description 

Insulin-Like Growth Factor I mouse Recombinant produced in E.Coli is a single, non-glycosylated, polypeptide chain containing 70 amino acids and having a molecular mass of 7600 Dalton.
IGF-I is purified by proprietary chromatographic techniques.

Source 

Escherichia Coli.

Physical Appearance  （外觀）

Sterile Filtered White lyophilized (freeze-dried) powder.

Formulation 

The protein was lyophilized with no additives.

Solubility  （溶解性）

It is recommended to reconstitute the lyophilized IGF1 in sterile 18MΩ-cm H2O not less than 100µg/ml, which can then be further diluted to other aqueous solutions.

Stability   （穩(wěn)定性）

Lyophilized IGFI although stable at room temperature for 3 weeks, should be stored desiccated below -18°C. Upon reconstitution IGF-1 should be stored at 4°C between 2-7 days and for future use below -18°C.
For long term storage it is recommended to add a carrier protein (0.1% HSA or BSA).
Please prevent freeze-thaw cycles.

Purity    （純度）

Greater than 98.0% as determined

by(a) Analysis by RP-HPLC.
(b) Analysis by SDS-PAGE.

Amino acid sequence   （氨基酸序列）

The sequence of the first five N-terminal amino acids was determined and was found to be Gly-Pro-Glu-Thr-Leu.

Biological Activity   （生物活性）

The ED50, calculated by the dose-dependant proliferation of murine BALB\C 3T3 cells (measured by 3H-thymidine uptake) is < 1.0 ng/ml, corresponding to a specific activity of 1MU/mg.

Protein content   （蛋白質(zhì)含量）

Protein quantitation was carried out by two independent methods
1. UV spectroscopy at 280 nm using the absorbency value of 0.47 as the extinction coefficient for a 0.1% (1mg/ml) solution. This value is calculated by the PC GENE computer analysis program of protein sequences (IntelliGenetics).
2. Analysis by RP-HPLC, using a calibrated solution of IGF-I as a Reference Standard.

Usage 

ProSpec's products are furnished for LABORATORY RESEARCH USE ONLY. The product may not be used as drugs, agricultural or pesticidal products, food additives or household chemicals.