JPH03504494A - IGF-binding protein, a DNA construct encoding the IGF-binding protein, and a vector containing this DNA construct - Google Patents

IGF-binding protein, a DNA construct encoding the IGF-binding protein, and a vector containing this DNA construct

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JPH03504494A
JPH03504494A JP1503492A JP50349289A JPH03504494A JP H03504494 A JPH03504494 A JP H03504494A JP 1503492 A JP1503492 A JP 1503492A JP 50349289 A JP50349289 A JP 50349289A JP H03504494 A JPH03504494 A JP H03504494A
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igf
binding protein
ibp
binding
protein
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ドロップ,ステンワルト レオナルド セバスチャン
ブリンクマン,アレンド
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エラスムス、ユニベルシテイト
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    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07KPEPTIDES
    • C07K14/00Peptides having more than 20 amino acids; Gastrins; Somatostatins; Melanotropins; Derivatives thereof
    • C07K14/435Peptides having more than 20 amino acids; Gastrins; Somatostatins; Melanotropins; Derivatives thereof from animals; from humans
    • C07K14/46Peptides having more than 20 amino acids; Gastrins; Somatostatins; Melanotropins; Derivatives thereof from animals; from humans from vertebrates
    • C07K14/47Peptides having more than 20 amino acids; Gastrins; Somatostatins; Melanotropins; Derivatives thereof from animals; from humans from vertebrates from mammals
    • C07K14/4701Peptides having more than 20 amino acids; Gastrins; Somatostatins; Melanotropins; Derivatives thereof from animals; from humans from vertebrates from mammals not used
    • C07K14/4743Insulin-like growth factor binding protein
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61PSPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
    • A61P17/00Drugs for dermatological disorders
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61PSPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
    • A61P3/00Drugs for disorders of the metabolism
    • A61P3/02Nutrients, e.g. vitamins, minerals
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61PSPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
    • A61P43/00Drugs for specific purposes, not provided for in groups A61P1/00-A61P41/00
    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07KPEPTIDES
    • C07K14/00Peptides having more than 20 amino acids; Gastrins; Somatostatins; Melanotropins; Derivatives thereof
    • C07K14/435Peptides having more than 20 amino acids; Gastrins; Somatostatins; Melanotropins; Derivatives thereof from animals; from humans
    • C07K14/78Connective tissue peptides, e.g. collagen, elastin, laminin, fibronectin, vitronectin, cold insoluble globulin [CIG]
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61KPREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K38/00Medicinal preparations containing peptides

Abstract

(57)【要約】本公報は電子出願前の出願データであるため要約のデータは記録されません。 (57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

【発明の詳細な説明】 IGF結合結合タンパクコGF結合結合タンパクコードするDNA構造体及びこ のDNA構造体を含有したベクタ一 本発明はヒト胎盤/子宮内膜に由来した分子量約28kDを有するインシュリン 様成長因子結合タンパク質IBP−1及びその同等修飾体に関する。[Detailed description of the invention] IGF-binding binding protein; DNA structure encoding GF-binding binding protein; A vector containing a DNA structure of The present invention provides insulin with a molecular weight of approximately 28 kD derived from human placenta/endometrium. The present invention relates to a similar growth factor binding protein IBP-1 and its equivalent modifications.

更に、本発明はIBP−1をコードするDNA構造体、このDNA構造体を含有 した発現ベクター及びかかるベクターを含んだ原核細胞又は真核細胞に関する。Furthermore, the present invention provides a DNA structure encoding IBP-1, a DNA structure containing this DNA structure. expression vectors and prokaryotic or eukaryotic cells containing such vectors.

更に、本発明はIBP−1を含んだ医薬製剤にも関する。Furthermore, the present invention also relates to pharmaceutical formulations containing IBP-1.

IGF又はインシュリン様成長因子はソマトメジンと同義である。ソマトメジン 群はインシュリン遺伝子から得られるポリペプチド群の1つである。遺伝子産物 としてはインシュリン、インシュリン様成長因子(IGF)■及び■、レラキシ ン並びに神経成長因子(NGF)のBユニットがある(Rlnderknech t及びHullbel 、 1978a;Rinderknecht及びHum bel、1978b;Bradshav 1978;1saacsら、1978 )。IGFはインシュリンのすべての標的組織に対して伝統的なインシュリン効 果を発揮し、即ちIGFは脂肪組織のグルコース代謝を速め、かつ、脂質、グリ コーゲン及びタンパク質の合成を促進する。IGFはある細胞類型においてDN A合成も促進する。この特徴はインビボで細胞増殖を誘導しかつ器官成長を促進 しうるIGFの能力を反映している。更に、IGFは間葉細胞の分化にも作用す る(pr□eschら、1985)。IGF or insulin-like growth factor is synonymous with somatomedin. somatomedin The group is one of a group of polypeptides derived from the insulin gene. gene product Examples include insulin, insulin-like growth factor (IGF) ■ and ■, and relaxi and the B unit of nerve growth factor (NGF). T and Hullbell, 1978a; Rinderknecht and Hum bel, 1978b; Bradshav 1978; 1saacs et al., 1978 ). IGF has a traditional insulin effect on all target tissues of insulin. In other words, IGF accelerates glucose metabolism in adipose tissue, and Promotes cogen and protein synthesis. IGFs are DN in certain cell types. It also promotes A synthesis. This feature induces cell proliferation and promotes organ growth in vivo. This reflects the IGF's ability to Furthermore, IGF also acts on mesenchymal cell differentiation. (pr□esch et al., 1985).

IGF−1及びIGF−IIは、それらが血漿中の特定の結合タンパク質と複合 化される点で独特である(Sijth、1984)。少なくとも2種の異なる結 合タンパク質が成人血清中で確認された。即ち(1)はとんどの内在IGFペプ チドを運搬する150kD複合体に由来すると考えられる、GH依依存性結合タ ンパ資質る結合タンパク質53 (BP−53)及び(2)子宮内膜及び肝臓で 特異的に発現される組織でありかつ血漿中におけるほとんどの不飽和結合部位の 原因でもある約30〜40kDのIGF結合結合タンパクコIBP−1である。IGF-1 and IGF-II are complexed with specific binding proteins in plasma. (Sijth, 1984). At least two different outcomes Synthetic proteins were identified in adult serum. That is, (1) is the most endogenous IGF pep A GH-dependent binding protein thought to be derived from a 150 kD complex that transports binding protein 53 (BP-53) and (2) in the endometrium and liver. It is a tissue specifically expressed and contains most of the unsaturated binding sites in plasma. The causative agent is IBP-1, an approximately 30-40 kD IGF-binding protein.

53kD結合タンパク質はGHコントロール下にあるが、30〜40kD種はG H非依存的に発現されるらしい。The 53kD binding protein is under GH control, while the 30-40kD species is under GH control. It seems to be expressed in an H-independent manner.

低分子量結合タンパク質は最初ヒト羊水で確認され、精製かつ特徴付けられた( Choehlnovら、1977;Dropら。Low molecular weight binding proteins were first identified in human amniotic fluid, purified and characterized ( Choehlnov et al., 1977; Drop et al.

1979;Dropら、1982)。この30〜40kDのIGF結合結合タン パクコヒト血清及びヒトへバトーマ細胞系HEPG2から精製された結合タンパ ク質と同一であるらしい (Dropら、1984aHPovoaら、1984 ; Povoaら、19115)。1979; Drop et al., 1982). This 30-40 kD IGF-binding protein Binding protein purified from Paco human serum and human hebatoma cell line HEPG2 It seems to be the same as the proteinaceous substance (Drop et al., 1984aHPovoa et al., 1984 ; Povoa et al., 19115).

Povoaらは、羊水及びHEPG2細胞系に存在する結合タンパク質のN H 2末端アミノ酸配列が類似していることを示した(Povoaら、 1985) 。Povoa et al. reported that N H of the binding protein present in amniotic fluid and HEPG2 cell line. The two terminal amino acid sequences were shown to be similar (Povoa et al., 1985). .

最初にヒト胎盤から単離されたタンパク質たる胎盤タンパク質pp12は、IG Fと結合しかつ同一のNH2H端アミノ酸配列を有することがわかった(Kof stinenら。Placental protein pp12, the protein first isolated from human placenta, is an IG It was found that it binds to F and has the same NH2H terminal amino acid sequence (Kof Stinen et al.

198B)。198B).

IGF結合結合タンパクコ物学的機能に関しては、促進及び阻害双方の効果につ いて記載されている。Regarding the physical function of IGF-binding proteins, both promoting and inhibiting effects are known. It is listed as follows.

IGF結合結合タンパクコ進効果は少なくとも2つの例が示されている。クレモ ンス(Ole+uons)ら(1986年)は、その結合タンパク質と複合化し て、繊維芽細胞及び平滑筋細胞の表面IGFレセプターとの結合性を高めること を示した。At least two examples of IGF binding binding protein co-stimulatory effects have been shown. Cremo Ole + uons et al. (1986) demonstrated that to increase binding to surface IGF receptors of fibroblasts and smooth muscle cells. showed that.

脂肪細胞によるグルコース輸送、軟骨細胞による硫酸取込み及び繊維芽細胞中へ のチミジン取込みの促進を含めた、インビトロにおける様々なIGF作用に関す るIGF結合結合タンパクコ害効果についても記載されている(Zaptら、  1979;Dropら、1979; Ooiら、198B)。加えて、正常細胞 における成長因子媒介分裂促進活性に関したIGF結合結合タンパクコ害効果も 記載された〔軟骨アッセイ(cartilage assay)、Drop、学 位論文、1983 )。Glucose transport by adipocytes, sulfuric acid uptake by chondrocytes and into fibroblasts on various IGF actions in vitro, including promotion of thymidine uptake in The harmful effects of IGF-binding proteins have also been described (Zapt et al. 1979; Drop et al., 1979; Ooi et al., 198B). In addition, normal cells IGF-binding binding proteins have also been shown to have a detrimental effect on growth factor-mediated mitogenic activity in Described [cartilage assay, Drop, dissertation, 1983).

本発明によるIGF結合結合タンパクコ記アミノ酸配列を有する: 八1a−Pro−Trp−G1n−Cys−Ala−Pro−Cys−5er− Ala−Glu−Lys−Leu−Ala−Leu−Cys−Pro−Pro− Va 1−5e r−A 1 a−5er−Cys−5e r−Gl u−Va  1−Thr−Ax:5er−A 1 a−G 1 y−Cys −G 1 y −Cys −Cys−Pro−Met−Cys −A l a −Leu−Pr o|Leu− Gl y−A 1a−Al a −Cys −G 1 y−Va 1−A 1  a−Thr−A 1 a−Arg−Cys −A la−A窒■|G 1 y− Leu−5er−Cys −Arg−A 1 a−Leu−Pro−G l y −G l u−G 1 n−G L n−P ro−Leu|Hi s − A 1 a−Leu−Thr−Arg−G 1 y−G 1 n−G 1 y− Al a−Cys −Va 1−G 1 n−G 1 u−Ter−As p− A l a−5et−A 1a−Pro−Hi 5−Ala−Ala −G 1  u −A 1 a−G 1 y−5er−Pro−G l@u−5er − Pro−Glu−5er−Thr−Glu−工1e−Thr−Glu−Glu− Glu−Leu−Leu−Asp−Asn−Phe−Hi s−Leu−Met −A 1 a −P ro−5er−G l u−G 1 u−As p−Hi  5−5er−工1e−kau− Trp−Asp−Ala−工1 e−S e r−Thr−Tyr−As p− G 1 y−5er−Lys−kia−Leu−Hi s | Va 1−Thr−As n −I 1 e−Lys −Lys −Trp−L ys −G l u−Pro7Cys−Arg−工1e−G撃普| Leu−Tyr−Arg−Va 1−Va l −Gl u−5e r−Leu −Ala −Lys −Al a −G 1 n−G 1 普|Thr − 5er−Gl y−G 1 u−Glu−I 1 e−5er−Lys−Phe −Tyr−Leu −Pro−Asn−Cys−Asn−Ly s −As n −G 1 y−Phe−Tyr−Hi s −5er−Arg−G 1 n−C ys −G l u−Thr−5er|Met− As p−G 1 y −G l u−A 1 a −G 1 y−Leu−C ys −Trp−Cys −Va 1−Tyr−Phe−T窒吹|As n− Gly−Lys−Arg(le−Pro−Gly−5er−Pro−Glu−工 1e−Arg−Gly−Asp−Pro−Asn−Cys−Gln−Met−T yr−Phe−Asn−Val−Gln−Asn対応cDNA配列の完全ヌクレ オチド配列は、請求の範囲第5項に記載された構造を有することが示された。The IGF-binding protein according to the present invention has the following amino acid sequence: 81a-Pro-Trp-G1n-Cys-Ala-Pro-Cys-5er- Ala-Glu-Lys-Leu-Ala-Leu-Cys-Pro-Pro- Va 1-5e r-A 1 a-5er-Cys-5e r-Gl u-Va 1-Thr-Ax:5er-A 1 a-G 1 y-Cys-G 1 y -Cys -Cys-Pro-Met-Cys -A l a -Leu-Pr o|Leu- Gl y-A 1a-Al a-Cys-G 1 y-Va 1-A 1 a-Thr-A 1 a-Arg-Cys -A la-A nit■|G 1 y- Leu-5er-Cys-Arg-A 1 a-Leu-Pro-G l y -G u-G 1 n-G n-P ro-Leu|His - A 1 a-Leu-Thr-Arg-G 1 y-G 1 n-G 1 y- Al a-Cys -Va 1-G 1 n-G 1 u-Ter-As p- A l a-5et-A 1a-Pro-Hi 5-Ala-Ala-G 1 u -A 1 a-G 1 y-5er-Pro-G l@u-5er - Pro-Glu-5er-Thr-Glu-Engineering 1e-Thr-Glu-Glu- Glu-Leu-Leu-Asp-Asn-Phe-His-Leu-Met -A 1 a -P ro-5er-G l u-G 1 u-As p-Hi 5-5er-Eng 1e-kau- Trp-Asp-Ala-Engineering 1 e-S e r-Thr-Tyr-As p- G1 y-5er-Lys-kia-Leu-His | Va -Thr-As -I  e-Lys -Lys -Trp-L ys-Gl u-Pro7Cys-Arg-工1e-G发pus| Leu-Tyr-Arg-Va 1-Va l-Gl u-5e r-Leu -Ala -Lys -Al a -G 1 n-G 1 Thr - 5er-Gl y-G 1 u-Glu-I 1 e-5er-Lys-Phe -Tyr-Leu -Pro-Asn-Cys-Asn-Lys -Asn -G 1 y-Phe-Tyr-His -5er-Arg-G 1 n-C ys-Gl u-Thr-5er|Met- As p-G 1 y-G l u-A 1 a-G 1 y-Leu-C ys-Trp-Cys-Va 1-Tyr-Phe-TNitsubuki|As n- Gly-Lys-Arg(le-Pro-Gly-5er-Pro-Glu- 1e-Arg-Gly-Asp-Pro-Asn-Cys-Gln-Met-T Complete nucleotide sequence of cDNA corresponding to yr-Phe-Asn-Val-Gln-Asn The otide sequence was shown to have the structure set forth in claim 5.

本発明のタンパク質はソマトメジンの機能化に関する効果的なボテンシェークー として用いることができる。The protein of the present invention is an effective protein for the functionalization of somatomedin. It can be used as

その効果は、生理学的条件下におけるソマトメジンとそれらの結合タンパク質と の堅固な結合を介して媒介することができる。このように複合化されたソマトメ ジンはそれらの結合タンパク質と一緒になって過度のタンパク質分解から保護さ れ、ソマトメジンの生物学的半減期を存意に増加させる。更に、このIGF結合 タンパク質又はその修飾体はIGFのその局所作用部位への有効なキ特表平3− 504494 (3) ヤリアとして機能するであろう。The effect is similar to that of somatomedins and their binding proteins under physiological conditions. can be mediated through the tight binding of Somatome compounded in this way Together with their binding proteins, gins are protected from excessive proteolysis. This significantly increases the biological half-life of somatomedin. Furthermore, this IGF binding The protein or its modified form is an effective key to the local action site of IGF. 504494 (3) It will function as a yaria.

クレモンスの研究(1986年)は、組織修復に際した結合組織及び筋肉細胞の 増殖強化及び受精に関する、このIGF−1結合タンパク質又はその修飾体の潜 在的な有用性について立証している。Clemons's research (1986) showed that connective tissue and muscle cells are important for tissue repair. The potential of this IGF-1 binding protein or its modifications for enhanced proliferation and fertilization. The current usefulness of this method has been demonstrated.

アルファIPEGのようなIGF結合タンパク質又はその修飾体は子宮内膜にお ける脱落膜細胞の主分泌可溶性タンパク質であるため、IBP−1は胎盤発育中 における子宮内膜への栄養芽層侵入を制限する上で重要な機能を有する。更に、 細胞増殖アッセイにおけるIBP−1の阻害機能及びある癌細胞のエストローゲ ン応答性に関するIBP−1の予想外の直接的阻害効果は、IBP−1又はその 修飾体を局所増殖阻害効果によって可能性ある抗癌剤とさせる。IGF-binding proteins such as alpha-IPEG or modified versions thereof can be IBP-1 is the main secreted soluble protein of decidual cells during placental development. It has an important function in restricting trophoblast invasion into the endometrium. Furthermore, Inhibitory function of IBP-1 in cell proliferation assay and estrogen in certain cancer cells The unexpected direct inhibitory effect of IBP-1 on responsiveness to IBP-1 or its The local growth inhibition effect makes the modified form a potential anticancer agent.

本発明は図面を参考にして以下の記載から更に詳細に説明される。The invention will be explained in more detail in the following description with reference to the drawings.

第1図は、ヒト28kDIGF結合タンパク質c DNAクローンに関する制限 地図及び配列について示している。Figure 1 shows the restrictions regarding the human 28kDIGF binding protein c DNA clone. The map and arrangement are shown.

第2図は、胎盤cDNA配列と肝臓cDNA配列との差異が括弧で示されたヒト 羊水結合タンパク質のヌクレオチド及び推定アミノ酸配列について示している。Figure 2 shows human human cDNA sequences with differences between placental and liver cDNA sequences indicated in parentheses. The nucleotide and deduced amino acid sequences of amniotic fluid binding protein are shown.

第3図は、pSV19、pSV4、pSV4Invでトランスフェクト(tra nsfect)されたCO5−1細胞及び非トランスフェクトCO5−1細胞の 培地のSDS/PAGE分析について示している。Figure 3 shows transfection (tra) with pSV19, pSV4, and pSV4Inv. nsfect) and non-transfected CO5-1 cells. Shown is SDS/PAGE analysis of the culture medium.

IGF−BPをコードするcDNAは、ヒト羊水結合タンパク質に対するポリク ローナル抗体でヒト胎盤及びヒトヘバトー7 (HEPG−2)cDNA発現ラ イブラリーをスクリーニングすることにより得られた(Dropら。The cDNA encoding IGF-BP is a polynucleotide for human amniotic fluid-binding protein. Human placenta and human Hebatou 7 (HEPG-2) cDNA expression assay using local antibodies. (Drop et al.

1984a )。1984a).

制限分析では、胎盤ライブラリーから単離されたクローン及びHEPG2ライブ ラリーから単離されたクローンが共直線性であって(第1図)、それらの候補を IGF結合結合タンパクロクローンて支持することを示した。複合制限地図は第 1図の最上部に示されている。In restriction analysis, clones isolated from placental library and HEPG2 live The clones isolated from the library were colinear (Figure 1), making these candidates It was shown that IGF-binding binding protein clones support IGF binding. Composite restriction map is 1 is shown at the top of Figure 1.

推定リーダー配列は翻訳領域を表すオーブンボックスの前に示されている。各矢 印はチェインターミネータ−法による配列決定の方向及び範囲について示してい る。4種の異なるクローンが並べられている。p4及びp19は胎盤cDNAラ イブラリーに由来し、一方W61及びWS2はHEPG2  cDNAライブラ リーに由来する(E−EcoRIs P−Ps t I、B−BamHI、H− Hind■、S−5stI、X−Xbal、N−Ncol)。The putative leader sequence is shown in front of the oven box representing the translated region. each arrow The marks indicate the direction and range of sequencing using the chain terminator method. Ru. Four different clones are lined up. p4 and p19 are placental cDNA W61 and WS2 are derived from the HEPG2 cDNA library, while W61 and WS2 are derived from the HEPG2 cDNA library. (E-EcoRIs P-Ps tI, B-BamHI, H- Hind■, S-5stI, X-Xbal, N-Ncol).

単離されたクローンの1つ(p 19)のcDNAインサートの完全ヌクレオチ ド配列が決定された。第2図で示された1421ヌクレオチド配列は、52ヌク レオチドの5′非翻訳領域、しかる後ATGコドン及び776ヌクレオチドのオ ーブン読取り枠を含んでいる。潜在的な開始コドンは、開始コドンに関するコザ ックの基準に適合した5′配列に隣接されている(Kozak、 198B)。Complete nucleotide of the cDNA insert of one of the isolated clones (p19) The code sequence was determined. The 1421 nucleotide sequence shown in Figure 2 consists of 52 nucleotides. the 5' untranslated region of leotide, followed by the ATG codon and the 776 nucleotide oligonucleotide. Contains an open reading frame. Potential start codons are It is flanked by a 5' sequence that meets the criteria of a block (Kozak, 198B).

3′末端において、オーブン読取り枠は翻訳終結コドン(TGA)及び569ヌ クレオチド鎖長の3′非翻訳配列に隣接されている。At the 3' end, the open reading frame includes a translation termination codon (TGA) and a 569-nucleotide It is flanked by 3' untranslated sequences of cleotide length.

cDNAクローンp19におけるオーブン読取り枠は、第2図でも(−文字コー ドで)示される計算My28.172ダルトンの259残基のタンパク質をコー ドする能力を有している。開始メチオニンは、小胞体膜への形成期ポリペプチド 配列の移行に必要な推定シグナル配列を表す24残基高疎水性ペプチド配列(下 線部分)の最初のアミノ酸である。好ましいシグナルペプチダーゼ開裂部位(a  1 a −g 1 y)はpos+1のアラニン残基のずぐN末端側に存在す る(won He1jne、1987) 、予想された成熟タンパク質のNH2 末端は、羊水(Povoaら。The open reading frame for cDNA clone p19 is also shown in Figure 2 (- character code). The calculated My28.172 Dalton 259-residue protein shown in It has the ability to The initiating methionine is a nascent polypeptide that enters the endoplasmic reticulum membrane. A 24-residue highly hydrophobic peptide sequence representing the putative signal sequence required for sequence migration (see below) It is the first amino acid of the line part). Preferred signal peptidase cleavage site (a 1a-g1y) is present immediately on the N-terminal side of the alanine residue of pos+1. (won Heljne, 1987), the predicted mature protein NH2 The terminus is amniotic fluid (Povoa et al.

19g4) 、HEPG2細胞系(Povoaら、1985)及び血清(Bax terら、1987)から単離されるIGF結合タンパク質に関して記載された 化学的決定NH2末端と同一である。19g4), HEPG2 cell line (Povoa et al., 1985) and serum (Bax ter et al., 1987) described for the IGF-binding protein isolated from Identical to the chemically determined NH2 terminus.

シグナルペプチド配列を除いた場合、この遺伝子産物のMrは2350ダルトン と予想される。血清IGF結合タンパク質のMrは約28.000ダルトンであ る(Baxterら、1987)。差異はIGF結合タンパク質のグリコジル化 に起因すると考えられる(Bohnら、1980;Kolstinenら、19 8B)。If the signal peptide sequence is excluded, the Mr of this gene product is 2350 daltons. It is expected to be. Mr of serum IGF binding protein is approximately 28,000 daltons. (Baxter et al., 1987). The difference is glycosylation of IGF-binding proteins (Bohn et al., 1980; Kolstinen et al., 1999). 8B).

そのアミノ酸配列ではN結合グリコジル化部位(N−TSN−S)について開示 していなかった。しかしながら、少なくとも5つの潜在的な0結合グリコジル化 部位が分子のN H2末端でみられた。IBP−1タンパク質のC0OH末端部 分にRGD配列がみられた。このような短鎖配列は、インシュリン群のレセプタ ーに対するフィブロネクチン、ビトロネクチン及びフォンビルプラント因子のよ うなマトリックスタンパク質の細胞付着にとって重要であると考えられる。Its amino acid sequence discloses an N-linked glycosylation site (N-TSN-S) I hadn't. However, at least five potential 0-linked glycosylation A site was found at the NH2 terminus of the molecule. C0OH terminal of IBP-1 protein An RGD sequence was observed in . Such short sequences act as receptors for the insulin group. - such as fibronectin, vitronectin and von Willeplant factor. It is thought that this matrix protein is important for cell attachment.

他の公知タンパク質及びペプチドとのアミノ酸相同性はNFBRデータベースバ ージョン12.0及び26.0をサーチすることにより調べた。IGF−BPタ ンパク質はいかなる有意のタンパク質相同性も示さず、IGF−BPが独特なタ ンパク質であることを示している。特に、IGF−1、IGF−II、インシュ リン、I型IGFレセプター及び■型IGFレセプターアミノ酸配列のアミノ酸 配列比較では相同的なドメインのないことを示した。加えて、高分子量IGF結 合タンパク質に関して報告されたNH2末端アミノ酸配列との相同性もみられな かった(Baxterら、198B)。Amino acid homology with other known proteins and peptides can be found in the NFBR database. This was determined by searching for versions 12.0 and 26.0. IGF-BP The proteins do not show any significant protein homology and IGF-BP is a unique protein. This indicates that it is a protein. In particular, IGF-1, IGF-II, insulin phosphorus, type I IGF receptor and type I IGF receptor amino acid sequences Sequence comparison showed no homologous domains. In addition, high molecular weight IGF binding There is also no homology with the NH2-terminal amino acid sequence reported for the combined protein. (Baxter et al., 198B).

更に、唾乳動物細胞でIBP−1を発現させることができた。発現ベクターps V19、pSV4及びpSV41nvは発現ベクターpSV328に全鎖長クロ ーンp4及びp19を挿入することにより組み立てられた。Furthermore, we were able to express IBP-1 in mammalian cells. expression vector ps V19, pSV4 and pSV41nv were cloned into the expression vector pSV328. It was assembled by inserting the genes p4 and p19.

cDNAインサートが3゛−5−向きであるベクターpSV4、psV19及び pSV4InvはCO5−1細胞にトランスフェクトされた。SDS/PAGE 分析の適用により、psV19(A列) 、pSV4 (B列)及び羊水(0列 )でトランスフェクトされたCOS −1細胞の細胞培地が分析された。IGF 結合結合タンパ音質DNAライブラリーのスクリーニングに関して記載されるよ うに免疫染色によって可視化された。遺伝子が正しい向きであるpSV4及びp Sv19トランスフエク1−CO3−1細胞の培地において、羊水(第3図)か らのIGF結合結合タンパ音質免疫学的に区別される32kDのタンパク質が検 出された。すべての培地において、35kDSMBP抗体と反応するバンドがみ えるが、但しこれは非トランスフェクトCOS −1細胞の培地には存在しなか った。Vectors pSV4, psV19 and psV19 with cDNA inserts in 3'-5-orientation pSV4Inv was transfected into CO5-1 cells. SDS/PAGE Application of the analysis revealed psV19 (column A), pSV4 (column B) and amniotic fluid (column 0). ) was analyzed. IGF The screening of conjugated protein-sound DNA libraries is described. The sea urchin was visualized by immunostaining. pSV4 and pSV4 with the gene in the correct orientation In the culture medium of Sv19 transfected 1-CO3-1 cells, amniotic fluid (Fig. 3) A 32 kD protein that is immunologically distinct from IGF-binding proteins was detected. Served. A band reactive with the 35kDSMBP antibody was observed in all media. However, this is not present in the culture medium of non-transfected COS-1 cells. It was.

IBP−1はCOS −1細胞でうまく発現されたが、推定タンパク質において N結合グリコジル化部位が欠如していても、様々な治療組成物で用いられるIB P−1の産生を高める上では、酵母及び細菌における発現にとり好ましい。IBP-1 was successfully expressed in COS-1 cells, but the putative protein Despite the lack of N-linked glycosylation sites, IBs used in various therapeutic compositions Expression in yeast and bacteria is preferred for increasing P-1 production.

本発明はIBP−1又はその誘導体及び薬理学的に許容される賦形剤を含んだ治 療組成物を提供する。本発明のrGF結合タンパク質又はその誘導体を含んだこ のような組成物は、ソマトメジンの生理学的機能に関連した多くの治療用途を有 している。The present invention provides a therapeutic method comprising IBP-1 or a derivative thereof and a pharmacologically acceptable excipient. therapeutic compositions. A product containing the rGF binding protein of the present invention or a derivative thereof. Such compositions have many therapeutic uses related to the physiological functions of somatomedin. are doing.

本発明のIGF結合結合タンパ音質通常の賦形剤と共にIGF結合結合タンパ音 質んだ医薬製剤として処方してもよい。本発明の医薬製剤は、非経口投与、例え ば1、  ■、 、S、  C,% 1. m、 s植込み、皮下もしくは静脈 内投与、粘膜、例えば経口、経鼻、経口腔、舌下もしくは経直腸投与を介する投 与又は経皮投与用の懸濁液でも又は溶液の形であってもよい。IGF-binding proteins of the present invention together with conventional excipients. It may also be formulated as a regular pharmaceutical preparation. The pharmaceutical formulation of the invention can be administered parenterally, e.g. Ba1, ■, , S, C,% 1. m, s implantation, subcutaneous or intravenous Administration via mucous membranes, e.g. oral, nasal, buccal, sublingual or rectal administration. It may be in the form of a suspension or solution for intravenous or transdermal administration.

例えば、ソマトメジンの生理学的半減期が本発明で記載されたIBP−1をIG F−1及びIGF−2と複合化させることで長(なるようにして、ソマトメジン が特定標的組織に輸送されねばならない場合がある。本発明によれば、このよう な複合体からのIGF−1又は2の徐放性は、この投与法によって局所的又は全 身的に一定レベルのソマトメジンを確実なものにする。これによって、本発明で 記載されたIBP−1は、高用量で、即ち静脈内から投与された場合であっても 繊維芽細胞、筋肉細胞及び内皮細胞のような様々な細胞で望ましくない局所細胞 増殖を引き起こすソマトメジンの強い分裂促進効果を消失させる。For example, IBP-1, which has a physiological half-life of somatomedin as described in the present invention, By complexing with F-1 and IGF-2, somatomedin may need to be delivered to specific target tissues. According to the present invention, such The sustained release of IGF-1 or 2 from the complex is achieved by this method of administration, either locally or globally. Physically ensure a certain level of somatomedin. This allows the present invention to The IBP-1 described is effective even when administered in high doses, i.e. intravenously. Undesirable local cells such as fibroblasts, muscle cells and endothelial cells Eliminates the strong mitogenic effect of somatomedin, which causes proliferation.

しかしながら、本発明で記載されたIBF−1は、IGF−1、IGF−2及び 他の成長因子と共に投与されるか又は創傷の治癒、骨粗髭症の治療及び骨の治癒 に用いられる治療装置で適用される(PDGF、EGF。However, IBF-1 described in the present invention is limited to IGF-1, IGF-2 and Administered with other growth factors or for wound healing, osteoporosis treatment and bone healing (PDGF, EGF.

FGFSTGFアルファ又はTGFベータのような)局所用の通常製剤として処 方される場合であっても、このような治療装置によるソマトメジンの定常的なコ ントロールされた放出のため価値があろう。(such as FGFSTGF alpha or TGF beta). Even when treatment is performed, the constant supply of somatomedin by such treatment devices would be valuable because of controlled emissions.

このような製剤は、例えばIBP−1及びIGF−1、IBP−1及びIGF− 2又はIBP−1、IGF−1及びIGF−2を含んだ組合せ製剤の形で場合に より投与される。Such formulations include, for example, IBP-1 and IGF-1, IBP-1 and IGF-1. 2 or in the form of a combination preparation containing IBP-1, IGF-1 and IGF-2. more administered.

一般に、本発明のIBP−1は高いIGF−1及び/又はIGF−2レベルを要 する障害又は他の機能不全の将来の治療においてIGF−1及び/又はIGF− 2の放出に関し強い調節機能を示すようになるであろう。Generally, the IBP-1 of the invention requires high IGF-1 and/or IGF-2 levels. IGF-1 and/or IGF-1 in the future treatment of disorders or other dysfunctions It will show a strong regulatory function regarding the release of 2.

他方、本発明のIBP−1又はその誘導体は多量のソマトメジン産生で特徴付け られるある癌の増殖の治療に有用であり、したがって軟骨肉腫、繊維肉腫及び乳 癌のような癌における望ましくない細胞増殖のオートラリン/バラクリン生理学 的促進を阻害する。On the other hand, IBP-1 or its derivatives of the present invention are characterized by the production of large amounts of somatomedin. It is useful in the treatment of certain cancerous growths such as chondrosarcoma, fibrosarcoma and breast cancer. Autoralin/Baracrine Physiology of Undesirable Cell Growth in Cancer-like Cancers hinders the promotion of

更に、本発明で記載されたIBP−1又はその誘導体は抗体の産生にも有用であ る。このようなモノ又はポリクローナル抗体は、組織内におけるIBP−1の免 疫組織化学的分析のような免疫学的方法を開発する上で及びIBP−1定量のた めのEL I SAを開発する上で適している−このようなELI SAは様々 なIGF−1及びIGF−2レベルの患者においてIBP−ルベルを早期にスク リーニングするために有益であろう。Furthermore, IBP-1 or its derivatives described in the present invention are also useful for producing antibodies. Ru. Such mono- or polyclonal antibodies can inhibit IBP-1 immunity within tissues. In developing immunological methods such as epithelial histochemical analysis and for IBP-1 quantification. Suitable for developing a new ELI SA - such an ELI SA can be early screening of IBP-Lubel in patients with moderate IGF-1 and IGF-2 levels. It would be beneficial for leaning.

s、  c、及びi、m、投与用の本発明の医薬製剤は下記成分を混合すること により製造できる: IGF−1、IGF−2及び他の成長因子と共にIBP− 1及びその誘導体、等張剤、緩衝剤、保存剤及び水。混合後、製剤のpH値は必 要であればpH−7,3に調整される。The pharmaceutical formulation of the present invention for administration of s, c, and i, m can be prepared by mixing the following ingredients: Can be produced by: IBP-1 along with IGF-1, IGF-2 and other growth factors. 1 and its derivatives, isotonic agents, buffering agents, preservatives and water. After mixing, the pH value of the formulation must be If necessary, the pH is adjusted to -7.3.

保存剤の例:フェノール及びm−クレゾール。等張剤の例:塩化ナトリウム及び グリセロール。緩衝剤の例はリン酸ナトリウムである。Examples of preservatives: phenol and m-cresol. Examples of isotonic agents: sodium chloride and Glycerol. An example of a buffering agent is sodium phosphate.

経粘膜投与用の本発明の医薬製剤は下記成分を混合することにより製造できる:  IGF−1、IGF−2及び他の成長因子と共にIBP−1及びその誘導体、 緩衝剤、等張剤、保存剤、吸収促進剤並びにビヒクル、例えば水、セルロース、 水溶性セルロースアルキルエーテル、結晶セルロース、水溶性ポリアクリレート 又はそれらの混合物。Pharmaceutical formulations of the invention for transmucosal administration can be prepared by mixing the following ingredients: IBP-1 and its derivatives together with IGF-1, IGF-2 and other growth factors, Buffers, isotonic agents, preservatives, absorption enhancers and vehicles such as water, cellulose, Water-soluble cellulose alkyl ether, crystalline cellulose, water-soluble polyacrylate or a mixture thereof.

経皮投与用の本発明の医薬製剤は下記成分を混合することにより製造できる:I GF−1、IGF−2及び他の成長因子と共にIBP−1及びその誘導体、等張 剤、保存剤並びにビヒクル、例えば水溶性セルロースアルキルエーテルの親水性 ゲル。Pharmaceutical formulations of the invention for transdermal administration can be prepared by mixing the following ingredients: I IBP-1 and its derivatives, along with GF-1, IGF-2 and other growth factors, isotonic Hydrophilicity of agents, preservatives and vehicles such as water-soluble cellulose alkyl ethers gel.

本発明はIBP−1の単離及びキャラクタライゼイションについて記載する下記 実施例で更に説明される。The present invention describes the isolation and characterization of IBP-1 below. This is further explained in the Examples.

例 (ラムダgtl1発現ライブラリーのスクリーニング)ラムダgtllのヒト胎 盤cDNAライブラリー及びヒトへパトーマ細胞系HEPG2のcDNAライブ ラリーを、ヤング及びデービスにより記載された操作(Young及びDavi s、1982)に従い、ヒト羊水結合タンパク質に対するポリクローナル抗体で スクリーニングした。ヒト羊水から単離された35kDソマトメジン結合タンパ ク質SMBPに対するウサギ抗体をドロップら、1984a年に記載されたよう に産生かつ精製した。抗体は、101イソプロピルβ−d−チオガラクトピラノ シド(IPTG)で誘導された大腸菌Y1090/ラムダgtllの集密溶菌プ レートから引き上げられたニトロセルロースフィルターと共にインキュベートす ることにより、大腸菌Y1090及びラムダgtllに対して吸収させた。抗体 を更にニトロセルロースフィルター上に固定されたヒト血清アルブミンに対して 吸収させた。胎盤ライブラリーの約4×105クローン及びHPEG2ライブラ リーの約0.5X105クローンをスクリーニングした。150關ベトリ皿当た り3〜5X104のプラーク形成単位をY1090細菌のローン(lawn)上 におき、インキュベートした。2時間のインキュベート後、プレートを10aM IPTGで飽和されたニトロセルロースフィルター(ミリボア(M目11por e) HA T F )でカバーした。プレートを37℃で2〜2.5時間イン キュベートシた。フィルターを取出し、室温でトリス緩衝液(TBS ; 10 iM)リス/MCI、pH7,5/150a+MNacl)により洗浄し、室温 で30分間TBS中3%BSAと共にインキュベートした。部分的に精製された 1 :125希釈ウサギポリクロ一ナル35kDSMBP抗体を、TBS中3% BSA+0.02%アジドに加え、フィルターを4℃で一夜インキユベートした 。フィルターを洗浄し、TBS中3%BSA中において1 : 200希釈され た西洋ワサビペルオキシダーゼ複合化ヤギ抗ウサギIgG(タボ(Tago)) と共に室温で60分間インキュベートした。フィルターを洗浄し、室温でpH9 ,2の0.2Mトリス/ HC1−10IIMM g CI 2中のアミドフェ ニル及びナフトールAS−MXホスフェートと共に放置した。example (Screening of lambda gtl1 expression library) Lambda gtll human embryo cDNA library and human hepatoma cell line HEPG2 cDNA live The rally was carried out using the procedure described by Young and Davis (Young and Davi s, 1982) with a polyclonal antibody against human amniotic fluid-binding protein. Screened. 35kD somatomedin-binding protein isolated from human amniotic fluid Rabbit antibodies against SMBP were as described by Drop et al., 1984a. was produced and purified. The antibody is 101 isopropyl β-d-thiogalactopyrano A confluent lytic plate of E. coli Y1090/lambda gtll induced with sid (IPTG) Incubate with a nitrocellulose filter pulled from the plate. By doing so, it was absorbed into E. coli Y1090 and lambda gtll. antibody for human serum albumin further immobilized on a nitrocellulose filter. I let it absorb. Approximately 4 x 105 clones of placenta library and HPEG2 library Approximately 0.5×105 clones of Lee were screened. 150 pieces per plate Place 3-5 x 104 plaque-forming units on a lawn of Y1090 bacteria. and incubated. After 2 hours incubation, plate at 10aM Nitrocellulose filter saturated with IPTG (millibore (M order 11por) e) Covered with HA TF). Incubate the plate at 37°C for 2-2.5 hours. Cubed. Remove the filter and add Tris buffer (TBS; 10 iM) Rhys/MCI, pH 7,5/150a+MNacl) and kept at room temperature. and 3% BSA in TBS for 30 minutes. partially refined 1:125 diluted rabbit polyclonal 35k DSMBP antibody at 3% in TBS. Added BSA + 0.02% azide and incubated the filters overnight at 4°C. . Filters were washed and diluted 1:200 in 3% BSA in TBS. horseradish peroxidase-conjugated goat anti-rabbit IgG (Tago) and incubated for 60 minutes at room temperature. Wash the filter and adjust it to pH 9 at room temperature. , 2 of 0.2M Tris/HC1-10IIMM g CI 2 and naphthol AS-MX phosphate.

陽性ファージを単離し、DNAを標準的方法で単離した(Maniatisら、 19g2)。ポリクローナル抗体と強く交差反応するプラーク約33を胎盤及び HEPG2  cDNAライブラリーで確認した。再スクリーニング後、サイズ 0.9〜1.5kDの様々なインサートを単離し、ファルマシア(Pharsa cla)のベクターPTZ19に組込んでサブクローニングした。胎盤ライブラ リーからの1つのクローン及びHEPG2ライブラリーからの5つの弱いハイブ リッド形成りローンを除き、すべての単離されたクローンはサザンプロットで交 差ハイブリッド形成を示した。Positive phages were isolated and DNA isolated using standard methods (Maniatis et al. 19g2). Approximately 33 plaques that strongly cross-reacted with polyclonal antibodies were collected from the placenta and Confirmed with HEPG2 cDNA library. After rescreening, size Various inserts of 0.9-1.5 kD were isolated and purchased from Pharmacia (Pharsa). cla) and subcloned into the vector PTZ19. placenta library 1 clone from Lee and 5 weak hives from HEPG2 library With the exception of lid-forming clones, all isolated clones were crossed on Southern blots. showed differential hybridization.

DNAを供給者の指示に従い様々な制限エンドヌクレアーゼ(BRL、NEN、 ベーリンガー(Boehringer))で切断し、0.8%アガロース中で電 気泳動に付し、サザンの方法(Southern、 1975)に従いニトロセ ルロースフィルターに移動させた。mRNAをジメチルスルホキシド(DMSO )及びグリオキサールで変性し、1%アガロース中で電気泳動に付し、ニトロセ ルロースフィルター(ミリボアHFTF)に移動させた。The DNA was digested with various restriction endonucleases (BRL, NEN, Cut with a Boehringer and electrolyte in 0.8% agarose. nitroseparate according to Southern's method (Southern, 1975). Transferred to lurose filter. mRNA was extracted with dimethyl sulfoxide (DMSO). ) and glyoxal, electrophoresed in 1% agarose, and nitrose Transferred to a lurose filter (millibore HFTF).

制限断片をベクターPT21g又はPTZ19 (ファルマシア)に組込んでサ ブクローニングし、チェインターミネータ−法(Sangerら、1977)に 従い配列決定した。The restriction fragment was incorporated into the vector PT21g or PTZ19 (Pharmacia) for support. cloned and chain terminator method (Sanger et al., 1977). It was then sequenced.

好都合な制限部位を欠く領域の場合には、適切なりローンをBa131ヌクレア ーゼ切断で得た。In the case of regions lacking convenient restriction sites, a suitable clone can be added to the Ba131 nucleus. Obtained by enzyme cleavage.

(CO8−1細胞のトランスフェクション)全鎖長cDNAクローンp4及びp 19を、サルウィルス40 (SV40)初期プロモーターを用いてクローン化 インサートを発現する、pSV328(7)ECORIに組込んでサブクローニ ングした(Van Heuvelら、1986)。(Transfection of CO8-1 cells) Full length cDNA clones p4 and p 19 was cloned using the simian virus 40 (SV40) early promoter. Subcloned into pSV328(7)ECORI expressing the insert. (Van Heuvel et al., 1986).

DEAE−デキストラン操作(McCuthchan & Pagano。DEAE-dextran manipulation (McCutchan & Pagano.

1986)後、ダルベツコMEM (DMEM)中での4時間の100μMクロ ロキンとの処理によって、C08−1細胞をトランスフェクトした(Gluzs an、 1981)。この処理の後、細胞をDMEM+5%牛脂児血清で24時 間増殖させた。培地を72時間後に除去し、細胞をDMEMで徹底洗浄し、無血 清DMEMで72時間インキュベートした。培地中における32kD結合タンパ ク質の産生は35kDSMBP抗体を用いて調べた。(1986) followed by 100 μM cloning for 4 h in Dulbecco MEM (DMEM). C08-1 cells were transfected by treatment with Rokin (Gluzs an, 1981). After this treatment, the cells were incubated with DMEM + 5% tallow serum for 24 hours. It was grown for a while. The medium was removed after 72 hours and the cells were thoroughly washed with DMEM and blood-free. Incubated in clear DMEM for 72 hours. 32kD binding protein in the medium Protein production was examined using a 35kDSMBP antibody.

IBP−1の精製 羊水又はならし培地からのタンパク質を最終濃度35%の硫酸アンモニウムで沈 降させた。遠心後、上澄を50%硫酸アンモニウムにした。ベレットを45%硫 酸アンモニウムに溶解し、最終ペレットを更に精製及びキャラクタライゼイショ ンのためにpH7,5の50mMトリスHCIに溶解した。溶解された硫酸アン モニウム沈降物をC18逆相クロマトグラフィーで更に精製した。Purification of IBP-1 Proteins from amniotic fluid or conditioned medium were precipitated with ammonium sulfate to a final concentration of 35%. It rained. After centrifugation, the supernatant was made into 50% ammonium sulfate. Beret with 45% sulfur The final pellet was dissolved in ammonium chloride for further purification and characterization. The solution was dissolved in 50mM Tris-HCI at pH 7.5 for analysis. dissolved ammonium sulfate The monium precipitate was further purified by C18 reverse phase chromatography.

pH7,5の50IIMトリスHCI及び50%メタノール中pH7,5のトリ スHCIで洗浄後、純粋なIBP−1を65%メタノール中pH7,5のトリス I(CIでカラムから溶出させた。IBP−1を7%トリクロロ酢酸溶液中で一 夜かけて沈降させた。沈降物をpH7,5の20sM)リスHCIに溶解し、凍 結乾燥し、−20℃で貯蔵した。50IIM Tris HCI at pH 7.5 and Tris at pH 7.5 in 50% methanol. After washing with HCl, pure IBP-1 was washed with Tris at pH 7.5 in 65% methanol. The column was eluted with IBP-1 (CI) in a 7% trichloroacetic acid solution. It was allowed to settle overnight. The sediment was dissolved in 20 sM (pH 7.5) Lis HCl and frozen. Dry and store at -20°C.

精製IBP−1のキャラクタライゼイションIBP−1は、過剰の冷IGF−1 又はIGF−2存在下又は非存在下+  125I I IGF−1及び112 5IIIGF−2との結合アッセイで測定した場合にほぼ同様の特異性でIGF −1及びIGF−2の双方と結合する。Characterization of Purified IBP-1 IBP-1 is derived from excess cold IGF-1. or in the presence or absence of IGF-2 + 125I I IGF-1 and 112 5IIIGF-2 with approximately similar specificity as measured in a binding assay. -1 and IGF-2.

IBP−1反応の特異性は、かかる競合アッセイを用いる同様のアッセイ、及び 、IBP−1−IGF結合がIBP−1に対する抗体の特異的反応を介して視覚 化されるアッセイで試験した。このようなアッセイにおいて、IBP−1はIG F−1及びIGF−2のみと反応したが、但しインシュリン、プロインシュリン 又はそれらの端部欠如体のような密接に関連した化合物とは反応しなかった。The specificity of the IBP-1 reaction was determined by similar assays using such competitive assays, and , IBP-1-IGF binding is mediated by the specific reaction of antibodies against IBP-1. tested in a standard assay. In such assays, IBP-1 is Reacted only with F-1 and IGF-2, but with the exception of insulin and proinsulin. or with closely related compounds such as their truncated forms.

IBP−1の精製サンプルの生物学的効果についてはMCF−7乳癌細胞系中へ の3H−チミジン取込みを利用したインビトロ分裂促進試験で試験した。細胞増 殖に関するIGF−1及びIGF−2双方の促進効果は用量依存的にIBP−1 で阻害された。IGF−2依存細胞増殖に関するIBP−1の効果はIBF−1 の効果よりも顕著であった。Biological effects of purified samples of IBP-1 in MCF-7 breast cancer cell line was tested in an in vitro mitogenic assay utilizing 3H-thymidine incorporation. cell increase The promoting effects of both IGF-1 and IGF-2 on proliferation are dose dependent on IBP-1. was inhibited. The effect of IBP-1 on IGF-2-dependent cell proliferation is due to IBF-1 The effect was more significant than that of .

更に、軟骨中への+35S+−メチオニン取込みを利用したアッセイにおいて、 IGF−1及びIGF−2の促進効果は低ng範囲でIBPにより消失した。Furthermore, in an assay using +35S+-methionine uptake into cartilage, The stimulatory effects of IGF-1 and IGF-2 were abolished by IBP in the low ng range.

25ng  IBP−1 10ng  IGF−1 0,7%NaC1 1/75Mリン酸ナトリウム 水 全量1ml 計算量のIBP−1及びIGF−1をNaC1含有リン酸緩衝液に溶解し希釈し た。pHを7.3〜7.4に調整した。25ng IBP-1 10ng IGF-1 0.7%NaCl 1/75M sodium phosphate Water total volume 1ml Calculated amounts of IBP-1 and IGF-1 were dissolved and diluted in phosphate buffer containing NaCl. Ta. The pH was adjusted to 7.3-7.4.

例2 25ng  IBP−1 10ng  IGF−2 1,6%グリセリン 1/75Mリン酸ナトリウム 0.01%塩化ベンザルコニウム 0.05%エデト酸ナトリウム 水 全量1ml 計算量のIBP−1及びIGF−2をグリセリン、塩化ベンザルコニウム及びエ デト酸ナトリウム含有リン酸緩衝液に溶解し希釈した。pHを7.4に調整した 。Example 2 25ng IBP-1 10ng IGF-2 1,6% glycerin 1/75M sodium phosphate 0.01% benzalkonium chloride 0.05% sodium edetate Water total volume 1ml Calculated amounts of IBP-1 and IGF-2 were added to glycerin, benzalkonium chloride and It was dissolved and diluted in a phosphate buffer containing sodium detate. pH was adjusted to 7.4 .

例3 25ng  IBP−1 10ng  IGF−1 10ng  IGF−2 5%ヒドロキシエチルセルロース 0.9%ベンジルアルコール 1/75Mリン酸緩衝液 水 全量1ml ゲルはヒドロキシエチルセルロースをIBP−1、IGF−1及びIGF−2含 有水相と混合することにより製造する。Example 3 25ng IBP-1 10ng IGF-1 10ng IGF-2 5% hydroxyethyl cellulose 0.9% benzyl alcohol 1/75M phosphate buffer Water total volume 1ml The gel contains hydroxyethyl cellulose containing IBP-1, IGF-1 and IGF-2. Produced by mixing with an aqueous phase.

文献: 1、 Baxter R,C,、Martin J、L、、Tyler M、1 .、Hovden M。Literature: 1, Baxter R, C, Martin J, L, Tyler M, 1 .. , Hovden M.

E、H,、ヒト血漿からの成長ホルモン依存性インシュリン様成長因子(IGF )結合タンパク質は他のヒトIGF結合タンパク質と異なる(Growth h ormone−dependentlnsulln−1ike growth  f’actor(IGP)binding proteinrrovI hum an  plasma  differs  rroyr  other  h uman  IGPbinding  protelns)、a、Bioche m、Blophys、Res、Communun。E, H, Growth hormone-dependent insulin-like growth factor (IGF) from human plasma. ) binding protein is different from other human IGF binding proteins (Growth ormone-dependentlnsulln-1ike growth f’actor (IGP) binding proteinrrovI hum an plasma differs rroyr other h uman IGP binding protelns), a, Bioche m, Blophys, Res, Commun.

1986:139:125B−1281゜2、 Bohn H,、Kraus  w、、新規胎盤特異タンパク質の単離及び特徴化(Isolierung un d Charakterislerungeines neuen plasz entaspezifischen Proteins(PP12))。1986:139:125B-1281゜2, Bohn H, Kraus Isolation and characterization of novel placenta-specific proteins (Isolierung un d Charakterislerungeines neuen plasz Entaspezifischen Proteins (PP12)).

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Endocrinol、Metab、1984a:59:899−907゜9、 Elgfn R,G、、Busby Jr、v、H,、CIe**ons DJ 、、インシュリン様成長因子(IGF)結合タンパク質はIGF−■に対する生 物学的応答を高める(An insulin−likegrowth fact or(IGF) binding protetn enhances the biologic response to IGP−1)、Proc、Nat l、Acad、Sci、USAI987:84:3254−3258゜10、  Proesch E、R,,5chaid C,,5chvander J、、 Zapf」、、インシュリン様成長因子の作用(Actions ofinsu lin−1ike growth factor)、Ann、Rev、Phys iol、1985:47:443−487゜ 11、 He1jne G、、von、、シグナル配列開裂部位を予想するため の新規方法(A new method f’or predictingsi gnal 5equence cleavage 5ltes)、Nuclei c、Ac1d。Endocrinol, Metab, 1984a:59:899-907°9, Elgfn R, G,, Busby Jr, v, H,, CIe**ons DJ ,, Insulin-like growth factor (IGF) binding protein has a biological effect on IGF-■. An insulin-like growth fact or(IGF) binding protectn enhancements the biological response to IGP-1), Proc, Nat l, Acad, Sci, USAI987:84:3254-3258゜10, Proesch E, R,,5chaid C,,5chvander J,, Actions of insulin-like growth factor lin-1ike growth factor), Ann, Rev, Phys iol, 1985:47:443-487゜ 11. He1jne G, von, To predict the signal sequence cleavage site A new method f’or predicting gnal 5equence cleavage 5ltes), Nuclei c, Ac1d.

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ヒトへパトーマ細胞系から単離されたソマトメジン結合タンパク質はヒト羊水か らソマトメジン結合タンパク質と同一である(The sorAatomedi n−binding proteinisolated from ahuma n hepatoma cell Ijne l5Identical  to   the  hulanalniotie  fluid  SOIatOI edin−binding  protein)、Biochew、BIoph ys、Res、cosnun、1985:128:1071−1078゜ 18、 Rinderknecht E、、HulIbel R,E、、ヒトイ ンシュリン様成長因子Iのアミノ酸配列及びプロインシュリンとのその構造相同 性(The alIino acid 5equence of humanI nsulin−like growth factor I and its  structuralhomology  with  prolnsulln )、J、Blol、Chem、1978a:253:2769−2776゜ 19、 Rlnderknecht E、、Husbel R,E、、ヒトイン シュリン様成長因子Hの一次構造(Primary 5tructure or human  1nsulin−1ike  growth  factorn )、PEB5  Lett、1978b:89:283−288゜ 20、 Sanger P、、NIcklan A、R,、Coulson J 、、鎖終結阻害剤によるDNA配列決定(DNA sequencing wi th chain−te「1natfng fnhlbitor)、Proc、 Natl、Acad、Sci、USA1977:74:5483゜ 21、 Sm1th G、L、、ソマトメジンキャリアタンパク質(SoIIa tosedln carrier proteins)、Mo1.(JIl、E ndocrinal1984:34:85−89゜ 22.5outhern E、、ゲル電気泳動で分離されたDNA断片中におけ る特異的配列の検出(Detection of’5pecirlc 5equ ences aLOong DNA rragments 5eparatec lby gelelectrophoresjs)、J、Mo1.Blol、1 975:98:503゜23、 Young R,A、、Davis R,W、 、抗体プローブを用いることによる遺伝子の効率釣車flit(Efficie nt 1solationof genes by using antlbo dy probes)、Proc、Natl、Acad。Somatomedin-binding protein isolated from human hepatoma cell line is human amniotic fluid The somatomedin-binding protein is identical to the somatomedin binding protein. n-binding proteinisolated from ahuma n hepatoma cell Ijne l5Identical to  the hulanalniotie fluid SOIatOI edin-binding protein), Biochew, BIoph ys, Res, cosnun, 1985:128:1071-1078゜ 18, Rinderknecht E, Huilbel R,E, Hitoi Amino acid sequence of insulin-like growth factor I and its structural homology with proinsulin Sex (The alIino acid 5 sequence of humanI nsulin-like growth factor I and its structural homology with ), J. Blol, Chem, 1978a:253:2769-2776° 19, Rlnderknecht E, Husbel R,E, Human In Primary structure of shrin-like growth factor H (Primary 5structure or human 1nsulin-1ike growth factorn ), PEB5 Lett, 1978b:89:283-288° 20, Sanger P, Nicklan A, R, Coulson J , DNA sequencing using chain termination inhibitors th chain-te "1 natfng fnhlbitor), Proc, Natl, Acad, Sci, USA1977:74:5483゜ 21, Sm1th G, L, somatomedin carrier protein (SoIIa tosedln carrier proteins), Mo1. (JIl,E ndocrinal1984:34:85-89゜ 22.5outhern E, in DNA fragments separated by gel electrophoresis Detection of specific sequences ences aLOong DNA rragments 5eparatec lby gelelectrophoresjs), J, Mo1. Blol, 1 975:98:503゜23, Young R, A,, Davis R, W, , Genetic Efficiency Flit (Efficie) by Using Antibody Probes nt 1solation of genes by using antlbo dy probes), Proc, Natl, Acad.

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Trapaan J、、Zwarthoff E、C,、天然及びハイブリッド ネズミアルファインターフェロンの性質(Propertles ofnatu ral  and  hybr4d  1lur4ne  alpha  jn terrerons)、J、Gen。Trapaan J, Zwarthoff E, C, Natural and Hybrid Properties of murine alpha interferon ral and hybr4d 1lur4ne alpha jn terrerons), J, Gen.

Vjrol、、67(PtlC1)2215−22.f’l160ct/I)1 0−8701゜27、  Zapf J、、5choenle E、、Jage rs G、、5and 1.。Vjrol, 67 (PtlC1) 2215-22. f’l160ct/I)1 0-8701゜27, Zapf J,,5choenle E,,Jage rs G,,5and 1. .

Grunwaldノ、、Froesch E、R,、単離脂肪細胞における非抑 制インシュリン様活性の作用のそのキャリアタンパク質と結合することによる阻 害(Inhibition of the actionor nonsupp ressIbIe 1nsuljn−1jke activity oniso lated fat cells by binding to Us car rierprotein)、J、Cl1n、Invest、1979:63:1 077−1084゜28、 Baxter R,C1,Martin J、L、 、成熟ラット血清中のインシュリン様成長因子に関する結合タンパク質:他のヒ ト及びラット結合タンパク質との比較(Bindingproteins fo r 1nsulin−like growth factors in adu ltrat serum、Col1parison vHh other hu man and ratbInding proteins>、BIochet x、Blophys、Res、Cotarrun、19B7:147:408゜ 29、 Ool G、T、、Herington^、C0,ヒト血清の特異的阻 害剤に対するインシュリン様成長因子1の共有結合架橋(Covalent c ross−1jnklng of 1nsulin−1ike growthf actors I to a 5peclf1c 1nhibltor Tro ts huo+anseru11)、Blochei、Blophys、I?e s、Coml1un、lHf1i:137:411゜30、 Chochino v R,H,、Mariz 1.に、、Hajek A、S、。Grunwald et al., Froesch E.R., Non-suppression in isolated adipocytes. Inhibition of the effects of antiinsulinoid activity by binding to its carrier protein Inhibition of the action ressIbIe 1nsuljn-1jke activity oniso rated fat cells by binding to Us car rierprotein), J, Cl1n, Invest, 1979:63:1 077-1084゜28, Baxter R, C1, Martin J, L, , a binding protein for insulin-like growth factor in adult rat serum: other human Comparison with rat and rat binding proteins (Binding proteins fo r1nsulin-like growth factors in adu ltrat serum, Col1 parison vHh other hu man and ratbInding proteins>, BIochet x, Blophys, Res, Cotarrun, 19B7:147:408° 29, Ool G, T, Herington^, C0, Specific inhibition of human serum. Covalent cross-linking of insulin-like growth factor 1 to harmful agents ross-1jnklng of 1nsulin-1ike growthf actors I to a 5peclf1c 1nhibltor Tro ts huo+anseru11), Blochei, Blophys, I? e s, Coml1un, lHf1i:137:411゜30, Chochino v R, H,, Mariz 1. To,,Hajek A,S,.

Daughaday W、H,、ソマトメジンCラジオレセプターアッセイで反 応する中期ヒト羊水中におけるタンパク質の牛ヤラクタライゼイション(Cha raeteriZatiOn 01’ aprotein  in  mid− 1ermhuian  amnjotic  fluid  whichrea cts in somatowedln−Cradloreceptor as say)、J。Daughaday, W. H., Somatomedin C radioreceptor assay. Bovine Yaractalization (Cha raeteriZatiOn 01' aprotein in mid- 1ermhuian amnjotic fluid whichchrea cts in somatowedln-Cradloreceptor as say), J.

ClIn、Endocrfnol、Metab、l977 : 44:902゜ FIo、1 AAACACIJCTCτATAA丁ccxAAcaT丁丁x1KK!!xス( raTTCTCCATtliGAAAAAAAAllAAA`AAAAAAAA AAJ、AA +36013)Q138013901UOO14101〜20FrG、2 BC FIG、3 1引・c11111I+1^””””””    PCT/IJ丁 IIqzn nnn。ClIn, Endocrfnol, Metab, l977: 44:902゜ FIo, 1 AAACACIJCTCτATAAdingccxAAcaTdingdingx1KK! ! x ( raTTCTCCATtliGAAAAAAAAAAllAAA`AAAAAAAAA A.A.J., A.A. +36013) Q138013901UOO14101~20FrG, 2 B.C. FIG.3 1 pull/c11111I+1^”””””” PCT/IJ Ding IIqzn nnn.

国際調査報告international search report

Claims (10)

【特許請求の範囲】[Claims] 1.下記アミノ酸配列を有するIGF結合タンパク質; 【配列があります】 又はその同等修飾体。1. IGF binding protein having the following amino acid sequence; [There is an array] or its equivalent modification. 2.請求項1に記載のタンパク質のグリコシル化修飾体。2. A glycosylated modified protein of claim 1. 3.1以上のヒドロキシ基がグリコシル化されている、請求項2に記載のIGF 結合タンパク質。3. IGF according to claim 2, wherein one or more hydroxy groups are glycosylated. binding protein. 4.請求項1に記載のIGF結合タンパク質をコードするDNA配列。4. A DNA sequence encoding the IGF binding protein according to claim 1. 5.コード鎖が下記構造を含んでなる、請求項4記載のcDNA配列。 【配列があります】5. 5. The cDNA sequence of claim 4, wherein the coding strand comprises the following structure: [There is an array] 6.請求項4又は5に記載のDNA配列を含んでなる、発現ベクター。6. An expression vector comprising the DNA sequence according to claim 4 or 5. 7.発現ベクターpSV19。7. Expression vector pSV19. 8.発現ベクターpSV4。8. Expression vector pSV4. 9.請求項6、7又は8に記載の発現ベクターを含んでなる、細胞系統又は微生 物。9. A cell line or microorganism comprising the expression vector according to claim 6, 7 or 8. thing. 10.請求項1〜3のいずれか一項に記載の結合タンパク質を含んでなる、医薬 製剤。10. A medicament comprising the binding protein according to any one of claims 1 to 3. formulation.
JP1503492A 1988-03-11 1989-03-10 IGF-binding protein, a DNA construct encoding the IGF-binding protein, and a vector containing this DNA construct Pending JPH03504494A (en)

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