AU3675799A - Methods and compositions for modulating morphogenic protein expression - Google Patents

Description

Regulation 3.2

AUSTRALIA

Patents Act 1990 COMPLETE DIVISIONAL SPECIFICATION FOR A STANDARD PATENT

(ORIGINAL)

0 *0 0.0.

0 0000 Name of Applicant: Actual Inventors: Address for Service: Invention Title: Creative Biomolecules, Inc. of 45 South Street, Hopkinton, Massachusetts 01748, United States of America Engin Ozkaynak AND Hermann Oppermann DAVIES COLLISON CAVE, Patent Attorneys, of 1 Little Collins Street, Melbourne, Victoria 3000, Australia "Methods and Compositions for Modulating Morphogenic Protein Expression" The following statement is a full description of this invention, including the best method of performing it known to us: 3- 2-99;17!21 7/ 21

IA

Iffeyhodw and SgM*coati*:Lctor uUZAA Worphe enic ftoteis nzpAreuiob Field of the Invention The invention relates generally to the field of drug'scrouning assays. -ore particularly, Che invention relates to methods and com-Positions for identifying molacu.'ls that modulate production ot true tissue morphogenic prozeins.

*0 IS Sackoround of the invention *A class of proteins recently has been identified. the members :of which are true tissue morphagenic proteins. The mmbers of this class of proteins are characterized as compteat for inducing the developmental cascade of cellular and molecular eas that 20 culminate in the formation of nlew organ-opecifgc tissue. including any vascular and connec:Lve tissue formation as required b the naturally occurring tissue. Specifically, the merphogens are competent for inducing all of the following biological functions in a morphojenicaaly permisive onviroament; stimulating proliferation of progenitor cells; stimulating differentiation at progenitor cells: stimulating the proliferation of differentiated cells and supporting the growth and maintenance of differentiated clls. For example, the morphogenic proteins can induce the full developmental cascade of bons tissue morphogeaesis, including the migration and proliferation of moeenchymal cells, proliferation and diffofntiacin of chordrocytes. cartilage matrix formation and calcification.

vascular invasion. outeoblast proliferation, bone formation. bone remodeling. and hemaopoieie bone marrow differentiation. Thse.

if-7- T .7) WO 95/33831 PCT/US95/07349 2proteins also have been shown to induce true tissue morphogenesis of non-chondrogenic tissue, including dentin, liver, and nerve tissue.

A particularly useful tissue morphogenic protein is human op-i (Osteogenic Protein-1), described in U.S. 5,011,691; US Pat. No.

5,266,683 and Ozkaynak et al. (1990) EMBO J. 9: 2085-2093.

Species homologues identified to date include mouse op-I (see Us Pat. 5,266,683) and the Drosophila homologue 60A, described in Wharton et al. (1991) PNAS 88:9214-9218). Other closely related proteins include OP-2 (Ozkaynak (1992) J. Biol. Chem. 267:25220- 25227 and US Pat. No. 5,266,683); BMP5, BMP6 (Celeste et al.

(1991) PNAS 87:9843-9847) and Vgr-l (Lyons et al. (1989). These disclosures are incorporated herein by reference.

It previously has been contemplated that these tissue morphogens can be administered to an animal to regenerate lost or damaaed tissue. Alternatively, one can envision administering a molecule capable of modulating expression of the endogenous tissue morphogen as a means for providing morphogen to a site in vivo.

It is an object of this invention to provide compositions and methods of screening compounds which can modulate expression of an endogenous tissue morphogen, particularly OP-i and closely related genes. The compounds thus identified have utility both in vitro and in vivo. Useful compounds contemplated include those capable .of stimulating transcription and/or translation of the OP-i gene, as well as compounds capable of inhibiting transcription and/or translation of the OP-i gene.

These and other objects and features of the invention will be apparent from the description, drawings and claims which follow.

Sunmary of the Invention The invention features compositions and methods for screening candidate compounds for the ability to modulate the effective local or systemic quantity of endogenous OP-i in an organism, and methods for producing the compounds identified. In one aspect, the method is practiced by: incubating one or more candidate compounds with cells transfected with a DNA sequence encoding, in operative association with reporter gene, a portion of an OP-1 SUBSTITUTE SHEET (RULE 26) WO 95/33831 PCTfUS95/07349 -3non-coding DNA sequence that is competent to act on and affect expression of the associated receptor gene; measuring the level of reporter gene expression in the transfected cell, and (3) comparing the level of reporter gene expressed i.n the presence of the candidate compound with the level of reporter gene expressed in the absence of the candidate compound. In a related aspect, the invention features the compound that is identified by use of the method of the invention.

The screening method of the invention provides a simple method of determining a change in the level of a reporter gene product expressed by a cell following exposure to one or more compound(s).

The level of an expressed reporter gene product in a given cell culture, or a change in that level resulting from exposure to one or more compound(s) indicates that application of the compound can modulate the level of the morphogen expressed and normally associated with the non-coding sequence. Specifically,. an increase in the level of reporter gene expression is indicative of.

0* a candidate compound's ability to increase OP-i expression in vivo. Similarly, a decrease in the level of reporter gene expression is indicative of a candidate compound's ability to decrease or otherwise interfere with OP-1 expression in vivo.

The methods and compositions of the invention can be used to identify compounds showing promise as therapeutics for various in vivo and ex vivo mammalian applications, as well as to identify 025 compounds having numerous utilities. For example, morphogen expression inducing compounds can be used in vivo to correct or alleviate a diseased condition, to regenerate lost or damaged tissue, to induce cell proliferation and differentiation, and/or to maintain cell and tissue viability and/or a differentiated phenotype in vivo or ex viva. The compounds also can be used to maintain the viability of, and the differentiated phenotype of, cells in culture. The various in vivo, ex vivo, and in vitro utilities and applications of the morphogenic proteins described herein are well documented in the art. See, for example, US 92/01968 (WO 94/03200), filed March 11, 1992; US 92/07358 (WO 93/04692), filed August 28; PCT US 92/0743 (WO 93/05751), filed August 28, 1992; US 93/07321 (WO0 94/03200), filed July 29, 1993; SUBSTITUTE SHEET (RULE 26) WO 95/33831 PCTIUS95/07349 4- US 93/08808 (WO 94/06449), filed September 16, 1993; US93/08885 (W094/06420), filed September 15, 1993, and US Pat. No. 5,266,683.

Morphogen expression inhibiting compounds identified by the methods, kits and compositions described herein can be used to modulate the degree and/or timing of morphogen expression in a cell. Such compounds can be used both in vitro and in vivo to more closely regulate the production and/or available concentration of morphogen.

List of useful terms and Definitions As used herein, 'gene expression" is understood to refer to the production of the protein product encoded by a DNA sequence of interest, including the transcription of the DNA sequence and translation of the mRNA transcript.

As used herein, "operative association" is a fusion of the described DNA sequences with a reporter gene in such a reading frame as to be co-transcribed, or at such a relative positioning as to be competent to modulate expression of the reporter gene.

As used herein, *vector, is understood to mean any nucleic acid comprising a nucleotide sequence of interest and competent to •be incorporated into a host cell and recombining with and integrating into the host cell genome. Such vectors include linear nucleic acids, plasmids, phagemids, cosmids, YACIS (yeast artificial chromosomes) and the like.

As used herein, "non-coding sequence" or "non-coding

DNA*

includes DNA sequences that are not transcribed into RNA sequence, and/or RNA sequences that are not translated into protein. This category of non-coding sequence".has been defined for ease of reference in the application, and includes sequences occurring to the ATG site which indicates the start codon and sequences 3' to the stop codon, as well as intervening intron sequences that occur within the coding region of the gene. As used herein, an "OPl-specific" non-coding sequence is understood to define a noncoding sequence that lies contiguous to OPl specific coding sequence at an OP-l gene locus under naturally-occurring SUBSTITUTE SHEET (RULE 26) WO 95/33831 PCT/US95/07349 conditions. The sequences may include 3' and intron sequences.

As used herein, "allelic, species and other sequence variants thereof" includes point mutations, insertions and deletions such as would be naturally occurring or which can genetically engineered into an OP-1 non-coding DNA sequence and which do not affect substantially the regulation of a reporter gene by the OP-1 non-coding sequence. For example, one of ordinary skill in the art can use site directed mutagenesis to modify as by deletion, for example, one or more of the OP-1 non-coding sequences described herein without substantially affecting the regulation of OP-l or a reporter gene by the modification. Such modifications are considered to be within the scope of the disclosure provided herein.

e As used herein, a "Wt-I/Egr-1 consensus binding sequence" or Wt-l/Egr-l consensus binding element" is a nine base sequence which has been shown to be bound by the DNA binding proteins Wt-1 S and Egr-l. The consensus sequence of the Wt-l/Egr-l binding site has been determined by homology to be GNGNGGGNG, Seq. ID No. 4 20 (Rauscher et al., Science 250:1259-1262 (1990), incorporated .0 herein by reference).

As used herein, a "TCC binding sequence" or "TCC binding element" is an approximately 15 to 20 base sequence of DNA which contains at least three contiguous or non-contiguous repeats of the DNA sequence TCC. The TCC binding sequence identified in human OP-1 genomic DNA is shown in Seq. ID No. 5, and the TCC binding sequence identified in murine OP-1 genomic DNA is shown in Seq. ID No. 6. The TCC binding sequence has also been shown to be bound by the DNA binding proteins Wt-1 and Egr-1 (Wang et al., Proc. Natl. Acad. Sci. 90:8896-8900 (1993); Wang et al., Biochem Biophys Res. Comm., 188:433-439 (1992)).

As used herein, a "FTZ binding sequence" or "FTZ binding element" is a Fushi-tarazu DNA sequence (FTZ) that has been shown to be bound by the DNA binding protein Fushi-tarazu (FTZ-F1). The FTZ binding sequence identified in human OP-1 genomic DNA is shown in Seq. ID No. 7. The FTZ consensus sequence, a consensus sequence for the nuclear hormone receptor superfamily, is

YCAAGGYCR.

SUBSTITUTE SHEET (RULE 26) WO 95/33831 PCTI/US9517349 6- As used herein, a "steroid binding sequence" or "steroid binding element" is a DNA sequence that has been shown to be bound by one or more elements, in response to activating signal molecules. Examples of such activating signal molecules" include retinoids, Vitamin D, and also include steroids such as estrogen and progesterone. Useful elements are anticipated to include the F'Z-Fl protein, WT-l and Egr-l. Activating signal molecules of the nuclear receptor family have recently been shown to bind to DNA as homodimers, heterodimers or as monomers (Parker, M.G., Curr. Op. Cell Biol., 1993, 5:499-504). The formation of heterodimers among the nuclear receptor family molecules may significantly increase the diversity of binding elements which are recognized by these nuclear receptors, and provide for differential regulation of genes containing the specific binding sites. In addition, the nuclear receptors have been shown to interact with other accessory factors, such as transcription factors, to stimulate or repress transcription. These interactions, between the nuclear receptors and the nuclear receptors and accessory factors, indicate that there could be significant number of nuclear receptor/accessory factor interactions which have widely different transcriptional activities.

While the method of the invention is described with reference to a single cell, as will be appreciated by those having ordinary skill in the art, this is only for ease of description, and the method is most efficiently carried out using a plurality of cells.

With respect to transfection of DNA sequences in the cell and the method of the invention, all means for introducing nucleic acids into a cell are contemplated including, without limitation, CaPo 4 co-precipitation, electroporation, DEAE-dextran mediated uptake, protoplast fusion, microinjection and lipofusion. A key to the invention is the DNA sequences with which the cell is transfected, rather than the mechanical or chemical process by which the DNA incorporation is accomplished.

Useful reporter genes are characterized as being easy to transfect into a suitable host cell, easy to detect using an established assay protocol, and genes whose expression can be tightly regulated. Other reporter genes contemplated to have SUBSTITUTE SHEET (RULE 26) II m WO 95133831 PCTIUS95/07349 -7utility include, without limitation, the luciferase gene, the Green Fluorescent Protein (GFP) gene, the chloraxnphenjcol Acetyl Transferase gene (CAT), human growth hormone, and betagalactosidase. Additional useful reporter genes are any well characterized genes the expression of which is readily assayed, and examples of such reporter genes can be found in, for example, F.A. Ausubel et al., Eds., Curn rtcl nMlclrBco John Wiley Sons, New York, (1989). As will be appreciated by those having ordinary skill in the art, the listed reporter genes are only a few of the possible reporter genes, and it is only for ease of description that all available reporter genes are not listed.

While the method, vectors, and cells described recite the use of a reporter gene in operative association with an OP-l noncoding DNA sequence, it will be apparent to those of ordinary skill in the art that the DNA sequence OP-l. including human OPI, shown in Seg. ID No. I or znurine OP-l, disclosed in U.S. Patent No. 5,266,683, is also within the scope of a suitable reporter gene. Other suitable reporter genes can be used for ease in assaying for the presence of the reporter mRNA or reporter gene product.

Where a cell line is to be established, particularly where the transfected DNA is to be incorporated into the cell's genome, lines that can be immortalized are especially desirable. As used herein, -immortalized, cell lines are viable for multiple passages greater than 50 generations) without significant reduction in growth rate or protein production.

While the selected non-coding DNA sequences disclosed herein are described using defined bases, as will be appreciated by those having ordinary skill in the art, to some degree the lengths of the selected-DNA sequences recited are arbitrary. and are defined for convenience. As will be understood by those of ordinary skill in the art, shorter sequences of OP-l non-coding DNA sequence and other fusion DNA's can be used in a vector according to the invention, and can be transfected into a cell, or used in the method of the invention for screening a candidate compound for its ability to modulate OP-l expression. Specifically, it is standard procedure for molecular biologists to first identify useful SUBSTITUTE SHEET (RULE 26) WO 95/33831 PCTfUS95/7349 -8regulatory sequences, and then to determine the minimum sequence required, by systematic digestion and mutagenesis by exonuclease or endonuclease digestion, site directed mutagenesis and the like. Accordingly, subsequent, standard routine experimentation is anticipated to identify minimum sequences and these, shorter sequences are contemplated by the invention disclosed herein.

Useful cell types for the method and compositions according to the invention include any eukaryotic cell. Currently preferred are cell types known to express OP-1. Such cells include epithelial cells and cells of uro-genital cell origin, including renal (kidney or bladder) cells, as well as liver, bone, nerve, ovary, cardiac muscle and the like. The cells may be derived from tissue or cultured from an established cell line. See, for example :15 Ozkaynak et al. (1991) Biochem. BioPhvs. Res. Comm. 179:116-123 for a detailed description of tissues known to express OP-l.

Other useful cells include those known to exhibit a steroid receptor, including cells having an estrogen receptor and cells responsive to the FTZ-Fl protein. Currently preferred cells also have simple media component requirements. Other useful representative cells include, but are not limited to, Chinese hamster ovary (CHO); canine kidney (MDCK); or rat bladder (NBT-2), and the like. Useful cell types can be obtained from the American Type Culture Collection (ATCC), Rockville, MD or from the European 25 Collection of Animal Cell Cultures, Portion Down, Salisbury U.X. As used herein, "derived" means the cells are from the cultured tissue itself, or are a cell line whose parent cells are of the tissue itself.

|S

Aspects and Embodiments of the Invention In one aspect, the invention features a vector having a reporter gene operatively associated with a portion of one or more OP-l non-coding sequences. The OP-i non-coding sequence chosen is independently selected from the 51 (or "upstream*) non-coding human or murine OP-l sequence shown in Seq. ID Nos. 1 and 2, respectively, the 3' (or "downstream") non-coding human or murine OP-l sequence shown in Seq. ID Nos. I or 3, and the human intron non-coding OP-l sequences shown in Seq. ID No. 1. Also SUBSTITUTE SHEET (RULE 26) WO 95/33831 PCT/US95/07349 9anticipated to be useful are the non-coding sequences 3. and intron) of other species homologs of OP-1 and proteins closely related to OP-i. In addition, the portion of OP-1 sequence included in the vector can be a combination of two or more 5' non-coding, 31 non-coding and/or intron OP-i sequences.

In one embodiment, the vector can include a non-coding Oplspecific sequence selected from at least one of the following sequence segments of Seq. ID No. I presented below, and which define human genomic OP-I sequence comprising approximately 3.3 Kb of 5' non-coding sequence. In Seq. ID No. 1, the start codon begins at position 3318, and the upstream sequence (bases 1 to 3317) is composed of untranscribed (1 to 2790) and untranslated (2791 to 3317) OPl-specific DNA;- approximately 1 Kb of which is presented in Fig. 1 (bottom strand).

15 Useful sequence segments include bases 2548-3317, representing 750 bases sharing significant (greater than 70% identity) between the mouse and human OP-i homologs (See Fig. and bases 3170- 9 3317; 3C20-3317; 2790-3317; 2548-2790 of Seq. ID No. 1, all shorter fragments of this region of the DNA. As base 2790 is the .mRNA start site, other useful sequences include 2790-3317, :representing transcribed but not translated 5' coding sequence and shorter fragments of this DNA region as noted above; upstream fragments of OPl-specific DNA, bases 2548-2790; 1549-2790; 1-2790 of Seq. ID No. 1. Also useful sequence segments include the approximately 750 bases that have homology between the human and mouse OP-I sequences with additional upstream sequences, 2300 to 3317,; 1300 to 3317; 1-3317; all fragments of the disclosed upstream OPI-specific DNA sequences of Seq. ID No. I.

In another embodiment, the sequences are defined by the noncoding sequences of the mouse OP-I homolog, including the following 5' non-coding sequences (Seq. ID No. 2150-2296, 2000-2296, 1788-2296, and 1549-2296 all of which define the 750 bases sharing high sequence identity with the human homolog (See, Fig. 800-2296; 1-2296; 1549-1788, 800-1788 and 1-1788.

Within this region also exist a number Egr/Wt-l sites (8 in hOP-1; 7 in mOP-1), known in the art to bind the regulatory elements Egr and Wt-l. Accordingly, in another aspect, the invention contemplates a screening material for identifying SUBSTITUTE SHEET (RULE 26) WO 95133831 PCT/US95/07349 compounds which modulate OP-i expression, the assay comprising the step of identifying compounds which bind Egr/wt-l site. At least oneWt/Egr-1 element, preferably between 1-6 elements, or at least 6 Wt/Egr-l elements are included in a sequence. The relative locations of these elements are indicated in Fig. I and at positions 3192-3200; 3143-3151; 3027-3035; 2956-2964; 2732-2740; 2697-2704 of Seq. ID No. 1, and positions 2003-2011; 1913-1922; 1818-1826; 1765-1776; 1757-1765; 1731-1739; 1699-1707: 1417-1425 of Seq. ID No. 2 of Seq. ID Nos. 1, 2 substantially the same Seq.

alignment. The lengths of bases within these 5' non-coding sequences is selected to include portions of the sequence of DNA which was determined to be homologous between murine and human genomic OP-I, separately and as a part of a larger sequence including non-homologous DNA. Additionally, the portion of OP-I 5 sequence selected can be a portion of the region of homology between murine and human OP-I DNA sequences, bases 2548-2790 or 2548-3317 of Seq. ID No. 1, or bases 1549 to 1788 or 1549 to 2296 e a of Seq. ID No. 2, and/or at least one of an Wt-l/Egr-l consensus .binding sequence. In still another aspect the portion of OP-l sequence selected can include a TCC binding sequence, a FTZ binding sequence, a steroid binding sequence, or part or all of an OP-I intron sequence. The relative positions of the TCC and FTZ elements are indicated in Fig. I and at positions 2758-2778 (TCC); 9 2432-2441 (FTZ) of Seq. ID No. I and 1755-1769 (TCC) of Seq. ID No. 2.

In another aspect, the invention features a cell that has been transfected with a reporter gene in operative association with a portion of OP-i non-coding DNA sequence. The portion of OP-i non- **coding sequence is independently selected from the 5' (or upstream) non-coding human or murine OP-i sequence shown in Seq.

ID Nos. I and 2, the 3' (or downstream) non-coding murine OP-i sequence shown in Seq. ID No. 3, and the human intron non-coding OP-I sequence shown in Seq. ID No. 1. The six human intron noncoding OP-l sequences are at bases 3736 to 10700; bases 10897 to 11063; bases 11217 to 11424; Wses 11623 to 13358; bases 13440 to 10548; bases 15166 to 17250; all of seq. ID No. 1. In addition the portion of OP-i sequence selected can be a combination of non-coding, 3, non-coding and/or intron OP-I sequence. Thus, the cell can have been transfected with a reporter gene in operative SUBSTITUTE SHEET (RULE 26) WO 95/33831 IPCT/US9S/07349 association with a portion of 51 non-coding op-1 genomic sequence that is independently selected from bases 3170 to 3317; 3020 to 3317; 2790 to 3317; 2548 to 3317; 2300 to 3317; 1300 to 3317; 1 to 3317; 2548 to 2790; 1549 to 2790; and 1 to 2790; all of Seq. ID No. 1 or bases 2150 to 2296; 2000 to 2296; 1788 to 2296; 1549 to 2296; 800 to 2296; 1 to 2296; 1549 to 1788; 800 to 1788; 1 to 1788; all of Seq. ID No. 2. The lengths of bases within these non-coding sequences is selected to include portions of the sequence of DNA which was determined to be homologous between murine and human genomic OP-i, separately and as a part of a larger sequence including non-homologous DNA. Additionally, the portion of OP-i sequence selected can be a portion of the region of homology between murine and human OP-l DNA sequences, such as bases 2548-2790 or 2548-3317 of Seq. ID No. 1, or bases 1549 to 1788 or 1549 to 2296 of Seq. ID No. 2, and at least one of an wt- 1/Egr-1 consensus binding sequence, a TCC binding sequence, a FTZ binding sequence, a steroid binding sequence, and an intron. Thus the portion of OP-I sequence selected can be a portion of the

C.

non-coding human or murine OP-i genomic DNA sequences, as stated above, and at least one Wt-l/Egr-l consensus binding sequence hh alone or in combination with at least one of a TCC binding sequence, a FTZ binding sequence, a steroid binding sequence, and a human OP-i intron DNA sequence. In another embodiment more than one Wt-1/Egr-l element is used, for example, between 1-6, or at least six. These cells are suitable for use in the method of the invention.

In one embodiment, part of the OP-I coding region is anticipated to have an expression regulatory function and also can be added to a vector for use in the screening assay described herein. OP-i protein is translated as a precursor polypeptide having an N-terminal signal peptide sequence (the "pre pro" region) which is typically less than about 30 amino acid residues, followed by a "pro" region which is about 260 amino acid residues, followed by the additional amino acid residues which comprise the mature protein. The pre pro and pro regions are cleaved from the primary translation sequence to yield the mature protein sequence.

The mature sequence comprises both a conserved C-terminal seven cysteine domain and an N-terminal sequence which varies significantly in sequence between the various morphogens. The SUBSTITUTE SHEET (RULE 26) WO 95/33831 PCT/US95/07349 12mature polypeptide chains dimerize and these dimers typically are stabilized by at least one interchain disulfide bond linking the two polypeptide chain subunits. After the pro domain is cleaved from the OP-1 protein it associates noncovalently with the mature dimeric protein, presumably to enhance solubility and/or targeting properties of the mature species. See, for example, PCT/US93/07189, filed July 29, 1993. The pro region represents the nucleotide sequence occurring approximately 87 bases downstream of the ATG start codon, and continues for about 980 bases. The nucleotide sequence encoding the pro region is highly enriched in a "GC" sequence, which well may be competent to form a secondary structure as part of the mRNA transcript) which itself may modulate OP-1 expression. Accordingly, part or all of the nucleotide sequence encoding an OP-1 pro region, particularly that portion corresponding to a GC rich region, may be used, preferably in combination with one or more OP-1 non coding sequences, in the compositions and methods of the invention.

In another embodiment, the method can be practiced using a cell known to express the OP-1 gene. Suitable DNA sequences for transfection are described below, as well as suitable cells containing transfected DNA sequences.

In another aspect, the invention provides molecules, vectors, methods and kits useful in the design and/or identification of OP-1 expression modulating compounds. As used herein a "kit" comprises a cell transfected with a DNA sequence comprising a reporter gene in operative association with a portion of OP-1 upstream DNA sequence and the reagents necessary for detecting expression of the reporter gene. The portion of OP-1 upstream DNA chosen can be any of the various portions which have been described herein.

Following this disclosure,'medium flux screen assays, and kits therefore, for identifying OP-1 expression modulating compounds are available. These compounds can be naturally occurring molecules, or they can be designed and biosynthetically created using a rational drug design and an established structure/function analysis methodology. The compounds can be amino acid-based or can be composed in part or whole of non-proteinaceous synthetic organic molecules.

SUBSTITUTE SHEET (RULE 26) WO 95/33831 PCT/tJS9SIO7349 13- The OP-i expression modulating compounds thus identified then can be produced in reasonable quantities using standard recombinant expression or chemical synthesis technology well known and characterized in the art and/or as described herein. For example, automated means for the chemical synthesis of nucleic and amino acid sequences are commercially available. Alternatively, promising candidates can be modified using standard biological or chemical methodologies to, for example, enhance the binding affinity of the compound for a DNA element and the preferred candidate derivative then can be produced in quantity.

Once at candidate compound has been identified it can be tested for its effect on OP-l expression. For example, a compound which upregulates (increases) the pro--ction of OP-I in a kidney cell line is a candidate for systemic administration. The candidate can be assayed in an animal model to determine the candidate molecule's efficacy in vivo. For example, the ability of a compound to upregulate levels of circulating OP-i in viavo can be used to correct bone metabolism diseases such as osteoporosis (See, for example, PCT/US92/07932, supra). Useful in vivo animal models for systemic administration are disclosed in the art and p below.

As demonstrated herein below, OP-i is differentially expressed in different cell types. Accordingly, it further is anticipated that a candidate compound will have utility as an inducer of OP-i expression in one cell type but not in another. Thus, the invention further contemplates testing a candidate compound for its utility in modulating expression of OP-1 imn different cells in vivo, including different cells known to express OP-i under native physiological conditions.

Thus, in view of this disclosure, one of ordinary skill in recombinant DNA techniques can design and construct appropriate DNA vectors and transfect cells with appropriate DNA sequences for use in the method according to the invention to assay for compounds which modulate the expression of OP-i. These identified compounds can be used to modulate op-i production and its available concentrations in both in vivo and in vitro contexts.

Brief Ducription of the Drawings SUBSTITUTE SHEET (RULE 26) WO 95/33831 PCTIUS95/073 4 9 14- Fig. I shows the alignment of upstream sequences of the murine and human OP-i gene. The murine sequence is present in the upper sequence lines and the human sequence is the lower sequence on all lines. The murine sequence is numbered backwards, counting back from the first ATO of the translated sequence which is shown highlighted. For purposes of alignment, dashes are introduced into the DNA sequence, and three portions of human DNA sequence have been cut from the sequence and placed underneath a gap, below a solid triangle; Fig. 2 shows a time course of murine uterus OP-I mRNA regulation by estrogen; and Fig. 3a shows a schematic of the 2 kb and 4 kb OP-l mRNAs, the hybridization locations of probes I through 7 (indicated by the bars under the schematic). The solid line indicates OP-I niRNA, the indicate potential poly A signals, the boxes indicate the translated portion of OP-l mRF7A with the hatched box showing the TCF-3 -like domain. The dashed lines indicate genomic

DNA

sequences. The arrows mark the locations of the cleavage site for OP-i maturation.

Fig. 3b. shows a Northern blot hybridization analysis of OP-i specific 2 kb and 4 kb mRNAs in murine uterine tissue. Lanes 1 through 7 correspond to probes I through 7 respectively. The 2 kb and 4 kb mRNAs are indicated by the 4- and 2-on the left side of Fig. 3b, and a 0.24 to 9.49 kb RNA size ladder is indicated by dashes to the right of the figure.

Detailed Description As will be more fully described below, we have identified regions in the OPl genetic sequence useful in identifying molecules capable of modulating OP-i expression in vivo. Also as described herein, we have determined that OP-l expression in vivo can be dependent both on cell type and on the status of the cell in a tissue. Specifically, as described herein below, OP-1 protein expression is differentially regulated in uterine tissue depending on the status of the uterine tissue. For example. OP-1 expression is dramatically down-regulated in uterine mouse tissue during pregnancy, whereas it is normally expressed in this tissue in virgin mice. Moreover, OP-l expression in other tissues such SUBSTITUTE SHEET (RULE 26) WO 95/33831 PCT/US95/0734 9 as renal tissue apparently is unaffected during pregnancy.

Administration of estrogen to a virgin mouse is capable of duplicating this down-regulation of OP-1 gene expression.

We investigated the DNA sequences responsible for the regulation of OP-1 gene expression by cloning non-coding sequences for the human and mouse OP-I gene. The tissue specific modulation of OP-i gene expression, and the significant homology which was found between an approximately 750 base region of human and murine non-coding OP-1 genomic sequence, implicate these sequences as having utility in a method for the screening of compounds for their ability to modulate OP-1 expression.

In view of this disclosure and the examples provided below, a method for identifying molecules which can affect OP-I expression in a particular cell type in vivo now is provided.

Cloning of Human and Mouse OP-I Gene Non-coding Sequences In the Northern blot analysis of murine organs multiple OP-I transcripts, are detected namely, three species of 1.8. 2.2, 2.4 kb and -r'ominent 4.0 kb RNA species (Ozkaynak et al., 1992, J.

Biol. Chem., 267:25220-25227; Ozkaynak et al; Biochem. Biophys.

0Res. Comm., 179:116-123). The pattern is similar in rats with only the 1.8 kb species absent. The estrogen-mediated downregulation of OP-1 mRNA affects all of these species. In order to prove that the 4.0 kb mRNA is in fact a transcript from the same oP-i locus, cDNA clones were isolated from a mouse teratocarcinoma cDNA library.

0 Four independent clones were obtained that added sequence C information to the published mouse cDNA sequence. Two of these CDNA clones have longer 51-untranslated sequences (0.4 and 0.3 kb) than previously reported (0.1 kb). Three of the murine clones contain additional 1.4 kb at the 3'-end. The combined sequences add up to a total OP-1 cDNA size of 3.5 kb, about 0.5 kb shorter than the 4.0 kb mRNA observed on Northern blots. cDNA clones that represent the 2 kb and 4 kb messages are shown schematically in Figure 3a. Since the polyA-tail is lacking in those cDNA clones that extend the 3 '-information, it was anticipated that missing kb sequence occurs at the 3'-end.

SUBSTITUTE SHEET (RULE 26) WO 95/33831 PCT/US95/07349 16- In order to obtain the sequence immediately adjacent to the 3'-end of the 3.5 kb cDNA sequence, a mouse genomic library, ML1039J (Clontech), was screened with a 3'-end cDNA specific probe (0.45 kb, 3'-end XmnI-EcoRI fragment of murine DP-1 cDNA) according to the parameters described below for the cloning of upstream non-coding sequences. This screen yielded four lambda clones which were analyzed by Southern blotting. All clones yielded a 1.5 kb XmnI fragment which was subcloned from lambda 071 into a Bluescript vector and sequenced. Three polyadenylation signals (AATAAA) (Proudfoot et al, (1976) Nature, 263:211-214) were found in this genomic fragment, at 3.52-, 3.58-, and 3.59 kb (shown schematically in Fig. 3a by the The 3'-end cDNA and the genomic DNA sequences in the 1.5 kb XmnI fragment overlap by 0.4 kb in a region that immediately precedes the second polyadenylation signal located at 3.5 kb (Figure 3a, region indicated by probe 6) and are in complete agreement within this *stretch.

*Human upstream non-coding sequence and additional mouse upstream non-coding sequence were obtained by screening human and mouse genomic libraries, HL1067J and ML1030J respectively (Clontech). All libraries were screened by an initial plating of 750,000 plaques (approximately 50,000 plaques/plate).

Hybridizations were done in 40% formamide, 5 x SSPE, 5 x Denhardt's solution, and 0.1% SDS at 37 0 C. Nonspecific counts were removed in 0.1 x SSPE, 0.1 SDS by shaking at 50 0 c. Human and mouse upstream genomic DNA sequences were obtained from clones lambda 63 and lambda 033, respectively (Clontech, HL1067J and ML1030J). These lambda clones were isolated using a 2 P-labeled probe made from a human 0.47 kb EcoRI OP-1 cDNA fragment (obtained from p0115) containing mainly 5' non-coding and exon 1 sequences.

A 7 kb EcoRI fragment from the human genomic clone, lambda 63, was isolated which contains 5 kb of upstream non-coding sequence.

Additional upstream sequence information for murine was obtained by subcloning a 1.1 kb PstI fragment from the genomic phage clone lambda 633. This fragment overlaps with the 5'-end of the longest murine CDNA clone by 0.3 kb in the 5' non-coding region and provided 0.8 kb additional sequence information. A schematic diagram of the 2- and 4 kb OP-1 messages is shown in Figure 3a SUBSTITUTE SHEET (RULE 26) WO 95/33831 PCT/US95/07349 17with dashed lines indicating supplementing information derived from murine upstream and downstream genomic DNA.

All sequencing was done according to Sanger et al. (1977) Proc. Natl. Acad. Sci. 74:5463-5467, using exonuclease IIImediated unidirectional deletion (Ozkaynak et al., (1987) BioTechniques. 5:770-773), subcloning of restriction fragments, and synthetic primers. Compressions were resolved by performing the reactions at 70 0 C with Taq polymerase and using 7-deaza-GTP Biochemical Corp.. Cleveland, OH).

Verification of OP-1 mRNA Sequences by Northern Blotting To verify the structures of the short and long mRNA species observed, Northern blot hybridizations were performed with probes Smade from seven non-overlapping DNA fragments (Fig. 3a; probes 1 through 7) specific to the 5' and 3' non-coding region, the protein coding sequence, and genomic regions upstream or downstream of the predicted mRNAs, respectively.

Hybridization of these probes to individual Northern blot strips containing mouse kidney mRNA is consistent with the predicted 4 kb mRNA structure. As shown in Fig. 3a, and Fig. 3b, the genomic DNA probes 1 and 2 did not hybridize to any message.

Probe 2 is specific to the upstream sequences immediately adjacent to the cDNA. Probes 3, 4, and 5, specific to 5' non-coding, S* coding, and 3' non-coding regions, respectively, hybridized to both the 2 kb and 4 kb messages, hence these sequences are present in both messages. Probe 6, specific to sequences between the first and second polyadenylation signals, hybridized only to the 4 kb message. Finally, probe 7 which is specific to sequences further downstream of the fourth (last) polyadenylation signal, did not hybridize to any message. The results obtained with these probes confirm the two OP-1 mRNA structures and the approximate and 3'-end boundaries of OP-1 transcripts shown in Figure 3a.

This demonstrates that the 2 kb and 4 kb mRNA's are from the same OP-1 genomic locus rather than from multiple genes.

The extensive 3' sequence included in the 4 kb mRNA transcript suggests that the 3' untranslated sequence may play a role in OP-1 gene expression particularly as it has been detected across species namely, in mouse, rat, dog, human and chicken. Multiple SUBSTITUTE SHEET (RULE 26) WO 95/33831 PCTIUS95/07349 18stop codons in all three possible translation reading frames rule out the likelihood that this sequence encodes a peptide. The untranslated sequence itself may act therefore to influence mRNA stability.. For example, the sequence may interact with another protein as has been described for transferrin receptor mRNA.

Here, IRE-binding protein (IRE; iron response element) stabilizes the transferrin receptor mRNA by binding to the 3'-end of the mRNA (Standard et al., 1990, Genes Dev., 4:2157-2168, incorporated herein by reference). Alternatively, the 3'-end sequences may be interacting with the 5'-end sequences thereby affecting initiation of protein synthesis or, the 3'-end sequences may be serving as a binding site for other RNAs which can interfere with the binding of an expression in modulating molecule, including repressor molecule. (Klausner et al., 1989, Science, 246:870-872; Kozak, 1992, Ann. Rev. Cell Biol., 8:197-225, incorporated herein by •reference).

Comparison of 5' Non-codina Sequences of Human and Mouse OP-l DNA SThe cloning of the 5' non-coding genomic murine and human OP- 20 DNA sequences demonstrated that a high degree of sequence homology exists between the human and murine 5, non-coding DNA sequences.

The homology extends from the base immediately upstream of the translation start site for the OP-i morphogen protein to approximately 750 bases upstream of the translation start site, as 25 is shown in the shaded regions of Fig. 1, with the murine Ssequences being the upper lines and the human sequences being the lower lines. The 51 nucleotide of the region of homology for the human OP-l 5' non-coding sequence is base 2548 of Seq. ID No. 1 S. and for the murine OP-I 5' non-coding sequence is base 1549 of 30 Seq. ID No. 2. The significant homology between the human and murine 5' non-coding sequences of OP-l suggest that this region may be important in the regulation of OP-i expression. As will be discussed in more detail below, this region contains several conserved DNA sequences which have been identified as the DNA binding sequences for two DNA binding proteins, Wt-l and Egr-l, which both recognize these DNA sequences. The DNA binding sequences for Wt-l/Egr-I present in human and murine are marked in Fig. 1 with a single line. Also, the TCC binding sequence, a DNA binding sequence for Wt-i and Egr-l, is marked in Fig. I by the SUBSTITUTE SHEET (RULE 26) WO 95133831 PCTIUS95/07349 19double line. AT-1 and Egr-l proteins have also been implicated in the regulation of expression of several genes which are unrelated to OP-l.

Alignments of mouse and OP-1 human genomic sequences reveals a conserved stretch of 0.75 kb just upstream of the first ATG that contains several patterns with marked similarity to the zincfinger protein binding sequence (5-GCG GGG GCG-3') specific for Egr-l and Wt-1 (Christy et al., 1989, PNAS, 86:8737-8741; Rauscher et al., 1990, Science, 250:1259-1262; Drummond et al., 1992, Science, 257:664-678). In mouse, a total of 8, and in human 7, patterns, conforming to the degenerate Egr-l/Wt-I binding sequence NGG GNG-3') (Rupprecht et al., 1994, J. Biol. Chem., 269: 6198-6202; Werner et al., 1994, J. Biol. Chem., 269: 12940-12946 are located before and after the presumed transcriptional 15 initiation site (Fig. 1, shown by solid single lines). The presence of these has significance in light of the elevated levels of Wt-l mRNA in the rat uterus decidua during pregnancy (Zhou et al., 1993, Differentiation, 54:109-114).

The analysis also revealed, in the human upstream region, a pattern of seven TCC repeats, present at -561, immediately 31 of two Egr/Wt-I sequences (at -624 and -587) (Figure 1, shown by double solid lines and at position 2758-2778 of Seq. ID No. 1).

The mouse upstream region contains a similar, albeit less obvious sequence at -356 and at position 1755-1769 of Seq. ID No. 2. This TCC-repeat pattern is found in the promoters of PDGF-A and several other growth-related genes, and Wt-l has been found to activate transcription when either of the sequences are present and to suppress it when both sequences are present. (Wang et al., 1992, Biochem. Biophys Res. Comm., 188:433-439; Wang et al. 1993, PNAS, 90:8896-8900 incorporated herein by reference). Accordingly, estrogen receptor may exert its effect on OP-I expression in uterus by upregulating Wt-1, either directly or indirectly.

Alternatively or, in addition other regulatory elements, located further upstream of the OP-i gene may be involved in estrogen regulation.

Also on Fig. 1, the human 5, non-coding DNA sequence is shown to contain a Fushi-tarazu (FTZ) binding sequence which is marked by carats below the human DNA sequence. A FTZ binding sequence is SUBSTITUTE SHEET (RULE 26) WO 95133831 PCT/US95/07349 bound by the Fushi-tarazu protein (FTZ-Fl). which is a member of the superfamily of nuclear receptors (Parker, (1993) Current opinion in Cell Biology, 5:499-504, The superfamily of nuclear receptor proteins include steroid hormones, retinoids, thyroid hormone, nerve growth factor and Fushi-tarazu, and are structurally related. FTZ-FI is likely to belong to a subfamily of nuclear receptors that bind DNA as monomers.

The FTZ-F1 protein is a positive regulator at the fushi-tarazu gene in blastoderm stage embryos of Drosophila FTZ-F1 is closely related in the silkworm (Bombyx) BmFTZ-Fl protein and the mouse embryonal long terminal repeat binding protein (ELP) and all of them are members of the nuclear hormone receptor superfamily, which recognizes the same 9 base pair sequence, 5 '-PyCAAGGPyCPu- The FTZ binding sequence does not apparently have a direct or inverted repeat. In contrast, other members of the nuclear hormone receptor superfamily usually bind to repeated sequences.

Nevertheless, the FTZ-Fl, BmFTZ-Fl and ELP proteins have high affinities for the FTZ binding site DNA, indicating that the mechanism that the binding is somewhat different from that of other members of the nuclear hormone receptor superfamily.

(Hitachi et al., 1992, Mol. and Cell Bioloay December, pp. 5667o 5672.).

The mRNA transcription initiation site for human OP-1 is marked on Fig. 1 by the upward arrow, and the OP-1 protein translation initiation site is marked on Fig. I by the solid triangles just prior to the highlighted ATG. The transcription initiation site for the human OP-1 gene is at base 2790 of Seq. ID No. 1 and the analogous site for murine is at base 1788 of Seq. ID No. 2. The translation initiation site for the human OP-1 gene is at base 3318 of Seq. ID No. 1 and for murine it is at base 2296 of Seq. ID No. 2. The high degree of identity that the murine and human DNA sequences share in the region between the transcription initiation site and the translation initiation site, suggests that this region likely plays a role in the modulation of the expression of the OP-1 gene product.

Analysis of OP-I Gene Expression in Mouse Tissues SUBSTITUTE SHEET (RULE 26) WO 95/33831 PCT/US95/07349 21 A detailed analysis of the uro-genital tract of rats has revealed OP-1 mRNA expression in the renal (kidney), and bladder tissues, as well as at other sites of the urogenital organ system.

The most abundant levels are present in renal and uterine tissue (8 week old mice), while much lower levels were found in ovaries.

The mRNA level of G3DPH, a "housekeeping function" molecule, was used as an internal control for recovery and quality of mRNA preparations and equal amounts of poly(A)+ RNA (5mg), were loaded into each lane.

Preparation of RNA and Northern blot hybridization analysis was conducted as follows. 8-week-old female mice, strain CD-1, were obtained from Charles River Laboratories, Wilmington, MA.

Total RNA, from the various organs of mice was prepared using the acid-guanidine thiocyanate-phenol-chloroform method (Chomczynski et al., (1987) Anal. Biochem. 162:156-159). The RNA was dissolved in TES buffer (10 mM Tris-HC1, 1 mM Na:-EDTA, 0.1% SDS, containing Proteinase K (Stratagene, La Jolla, CA; approx. 1 mg proteinase /ml TES) and incubated at 37 0 C for 1 hr. Poly (A) RNA was selected in a batch procedure on oligo(dT)-cellulose (Stratagene, La Jolla, CA) in 0.5 M NaCl, 10 mM Tris-HCl, 1 mM Na -EDTA, pH 7.4 (1 x binding buffer). For the selection of poly RNA, total RNA obtained from 1 g of tissue was mixed with approximately 0.lg of oligo(dT)-cellulose (in 11 ml TES containing 0.5 M NaC1). The tubes containing the RNA and oligo(dT)-cellulose 25 were gently shaken for approx. 2 hrs. Thereafter, the oligo(dT)cellulose was washed twice in lx binding buffer and once in binding buffer (0.25 M NaCl, 10 mM Tris-HC1, 1 mM Na -EDTA, pH 7.4) and poly RNA was eluted with water and precipitated with ethanol.

Poly(A)+ RNA (5 mg per lane) was electrophoresed on 1.2% agarose-formaldehyde gels with 1 mg of 400 ig/ml ethidium bromide added to each sample prior to heat denaturation (Rosen et al., (1990) Focus, 12:23-24). Electrophoresis was performed at 100 Volts with continuous circulation of the 1 x MOPS buffer (Ausubel et al., eds., (1990) Current Protocols in Molecular Biology, John Wiley Sons, New York). Following electrophoresis, the gels were photographed, rinsed briefly in water, and blotted overnight onto Nytran (Schleicher Schuell Inc., Keene, NH) or Duralon-UV SUBSTITUTE SHEET (RULE 26) WO 95/33831 PCT/US95107349 22- (Stratagene) membranes in 10 x SSC. The membranes were dried at for 30 min. and irradiated with UV light (1 mW/cm 2 for sec.).

The 32P-labeled probe was made from a murine OP-1 CDNA fragment (0.68 kb BstXI-BGlI frg.) by random hexanucleotide priming (Feinberg et al., (1984) Anal. Biochem., 137:266-267).

The hybridizations were done in 40% formamide, 5x SSPE, Denhardt's, 0.1% SDS, pH 7.5 at 37°C overnight. The non-specific counts were washed off by shaking in 0.lx SSPE, 0.1% SDS at For re-use, filters were stripped in 1 mM Tris-HCl, 1 mM Na:-EDTA, 0.1% SDS, pH 7.5 at 80° C for 10 min.

Analysis of OP-1 Expression During Pregnancy in Mice *9 An examination of the effect of pregnancy upon OP-! expression .e 15 was undertaken by measuring OP-2 mRNA levels in kidney, ovary and uterus, before, during, and after pregnancy (virgins, 2-day postcoital 4-day pc, 6-day pc, 8-day pc, 13 day pc, 17-day pc, 3-day lactating, and retired breeders) by Northern blot hybridization of poly(A)+ RNA. These measurements demonstrated 20 that, while kidneys show no pregnancy-related changes in OP-1 mRNA l levels, the uterine levels became nearly undetectable by 6-day pc.

e S However, no changes were observed in the ovaries. A dramatic and rapid decline in OP-1 message in uterine tissue between day 3 and •4 of pregnancy is apparent in the comparison with virgin animals.

S* S 25 The levels of OP-1 mRNA in the embryo and maternal levels in uterus of 8 week old mice at day 13 and 16 of the pregnancy were also compared. While the OP-1 expression in the pregnant uterus is dramatically reduced, high levels of OP-1 message are found in the mouse embryo at 13- and 16-days. Thus, at a stage of pregnancy when OP-I mRNA expression in the maternal uterus is almost undetectable, embryonal OP-1 expression is high. The high embryonal OP-1 expression also is detected consistent with the relatively high levels of OP-1 mRNA, found in human placenta. The level of OP-1 mRNA measured in the embryo is in the same range as that measured in adult kidney or virgin uterus tissue. Hence, it is likely that OP-1 plays a critical role in the development of the embryo which may require appropriate amounts of OP-1 at very specific stages of tissue and organ morphogensis. While not being SUBSTITUTE SHEET (RULE 26) WO 95/33831 PCT/US95/07349 23limited to any given theory, it is possible that OP-I expression in uterine tissue during pregnancy potentially could interfere with the level of OP-1 produced by the developing embryo, and thereby interfere with proper development of the embryo.

Therefore, a shut-down or inhibition of uterine OP-1 expression during pregnancy might be for the benefit of the fetus.

Effect of Estrogen and Progesterone on OP- Expression During pregnancy the estrogen and progesterone levels increase many fold and high levels are sustained until birth. To determine whether these hormonal changes are responsible for the altered OP- 1 transcription in pregnant uterine tissue, non-pregnant female mice were subcutaneously administered 17p-estradiol, or progesterone, or a combination of both.

15 In the first experiment the rapid increase in estrogen and progesterone levels during pregnancy was simulated. Non-pregnant mice were injected subcutaneously on four consecutive days with increasing doses, starting with 20 mg 1 7 p-estradiol, or 100 mg progesterone or the combination of both and doubling the dose on each following day. On the fourth day the animals were sacrificed S. and mFNA was isolated from uteri and kidneys. A striking negative effect of 17p-estradiol on the uterine OP-1 mRNA expression was observed, but no effect by progesterone was seen. In the kidneys, 0. however, mRNA levels did not change after 17p-estradiol or 25 progesterone treatment.

Another experiment addressed the time course: 17p-estradiol o ;was administered to virgin female mice at a constant dose of 200 mg (50 ml of 4 mg/ml 17p-estradiol per day, subcutaneously in DMSO [dimethyl sulfoxide] 150 ml 150 mM NaCl) (Figure Following this, their uteri were extracted, poly(A)+ RNA was prepared, equal amounts of poly(A)+ RNA (5 mg) was loaded into each lane of a 1.2% agarose-formaldehyde gel and analyzed by Northern blot hybridization. The effect was rapid, with considerable decrease of OP-1 mRNA 12 hours after administration of 17p-estradiol and almost undetectable levels by 48 hours, as shown in Fig. 2. In the figure, the lanes correspond as follows: from left to right, 0-day (negative control), 0-day (negative control), 2-, SUBSTITUTE SHEET (RULE 26) W95381- 24- PCT/US95/07349 and 8-days. The arrowheads mark the two major OP-i MRNA species. A modest amount of message reappears a few days later (Figure The uterus has been identified as a major site of op-i expression. The level of OP-I expression in uterine tissue is comparable to that observed in renal tissue. However, during pregnancy, by day four, the uterine OP-i JnRNA levels are reduced to the limit of detection. The loss of OP-i expression corresponds withalso is rising levels of estrogen during this same time frame. The same dramatic loss of uterine OP-I message also is observed in estrogen-treated animals, suggesting that estrogen is involved in negative regulation of OP-i expression in uterine tissue. The effect of estrogen is rapid, with most of the message disappearing after 12 hours of 171 3 -estradiol administration. The *15 reappearance of some OP-1 message at later days may be due to a count er-regulat ory mechanism. in contrast to the modulated OP-l 6 66mRNA levels in the uterus, no substantial changes occur in renal 66 tissue during pregnancy or in response to estrogen treatment.

Thrfoe OP- mRN expression inthese difrn rasis regulated independently. The differential expression may be due, for example, to a lack of estrogen receptors in renal tissue.

Alternatively, co-regulation by means of one or more accessory ~6 6 molecules that interact with estrogen or a related nuclear receptor molecule(s) may allow for the independent regulation.

For example, each of Wt-1 protein (which binds to the Wt-l/Egr-l 666 element) and OP-2 protein are required for normal kidney development, and each are expressed at high levels during kidney tissue development. As described above the OP-l promoter region contains Wt-l consensus binding elements. Wt-2. protein also has been shown to negatively regulate the transcription of the insulin growth factor II gene and the platelet-derived growth factor A chain gene. Kreidberg et al. Cell, 1993, 74:679-691. Without being limited to a given theory, it may be that Wt-. protein, either alone or in combination with one or more molecules is involved in the expression of OP-i. For example, Wt-l protein may act in concert with a nuclear hormone receptor element, including, for example,the estrogen receptor element.

SUBSTITUTE SHEET (RULE 26) WO 95/33831 PCTIUS95/07349 Implications of Tissue Specific Differential Regulation of OP- I Expression Estrogen also has been shown to inhibit the uterine expression of calbindin-D..k, a vitamin D dependent calcium binding protein, the a-subunit expression of the glycoprotein hormones, and other proteins involved in bone formation. Estrogen also has been shown to cause dramatic decreases in the steady state mRNA levels of the bone matrix proteins osteocalcin, prepro a2(I) chain type I collagen, osteonectin, osteopontin, and alkaline phosphatase in an ovariectomized rat, which is a rat model for osteoporosis.

Estrogen appears to mediate its beneficial effect on bone metabolism in the osteoporotic model through inhibition of osteoclasts. Estrogen does not reverse osteoporosis. By contrast, OP-i, which is expressed in uterine, renal and bone tissues, is able to induce an increase in bone mass in the osteoporotic model. Thus, the negative effect of estrogen on OP-i expression in uterine tissue may seem unexpected in view of estrogen's effect on bone metabolism.

In addition to the 5' non-coding DNA sequences of OP-i, the 20 other non-coding sequences such as introns and 31 non-coding ego sequences may be involved in the nodulation of OP-l protein expression. This invention presents a method in which these noncoding sequences are assayed while in operative association with a S. reporter gene for their influence on the expression of OP-I. Non- 25 coding sequences which are involved in the modulation of OP-i S. expression will be identified by culturing cells transfected with the non-coding sequences, in operative association with a reporter gene, with one or more compound(s), measuring the level of reporter gene expression, and comparing this level of expression to the level of reporter gene expression in the absence of the compound(s).

EXEMPLARY CELLS, VECTORS, REPORTER GENES AND ASSAYS FOR USE IN SCREENING COMPOUNDS WHICH MODULATE OP-I REGULATORY SEQUENCES I. Useful Cells Any eukaryotic cell, including an immortalized cell line suitable for long term culturing conditions is contemplated to be useful for the method and cell of the invention. Useful cells SUBSTITUTE SHEET (RULE 26) WO 95133831 PCT/US95107349 26should be easy to transfect, are capable of stably maintaining foreign DNA with an unrearranged sequence, and have the necessary cellular components for efficient transcription and translation of the protein, including any elements required for posttranslational modification and secretion, if necessary. Where the cell is to be transfected with a non-dominating selection gene, the cell genotype preferably is deficient for the endogenous selection gene. Preferably, the cell line also has simple media composition requirements, and rapid generation times.

Particularly useful cell lines are mannalian cell lines, including myeloma, HeLa, fibroblast, embryonic and various tissue cell lines, kidney, liver, lung and the like. A large number of cell lines now are available through the American Type Culture Collection (Rockville, MD) or through the European Collection of 15 Animal Cell Cultures (Porton Down, Salisbury, SP4 OJG, U.K.) Where, as here, the expression of a reporter gene that is controlled by non-coding sequences of the morphogen OP-I is to be analyzed, particularly useful cells and cell lines are envisioned to include eukaryotic, preferably mammalian cells of a tissue and cell type known to express OP-l and/or closely related proteins.

Such cells, include, without limitation, cells of uro-genital cell origin, including kidney, bladder and ovary cel.s, lung, liver, mammary gland and cardiac cells, cells of gonadal origin, cells of gastrointestinal origin, glial cells and other cell lines known to 25 express endogenous genes encoding morphogenic proteins. Preferred cell lines are of epithelial origin.

11. Exemplary Vectors/Vector Construction Considerations Useful vectors for use in the invention include, but are not limited to cosmids, phagemids, yeast artificial chromosomes or other large vectors. Vectors that can be maintained within the nucleus or integrated into the genome by homologous recombination are also useful. For example a vector such as PSV2CAT would be useful.

Selected portions of non-coding OP-i sequence can be cloned into a useful vector using standard molecular cloning techniques, as will be apparent to one of ordinary skill in the art.

Restriction endonuclease sites will be utilized when possible, and can be engineered into the sequence when needed. If restriction SUBSTITUTE SHEET (RULE 26) WO 95133831 PCT/US95107349 -27 endonuclease sites are needed to be engineered into the sequence, eight base recogniition. sites are preferable because they generally occur infrequently in DNA and will enhance a practitioners ability to obtain the sequence of interest. Restriction endonuclease sites can be engineered into the non-coding sequence using the commuon techniques such as site directed mutagenesis and PCR with primers including the desired restriction endonuclease site.

As discussed above, murine and human OP-1 sequences share a region of high homology covering approximately 750 bases upstream of the translation initiation site as shown by the shading in Fig.

1. This region is positions 2548-3317 of Seq. ID No. I arnd positions 1549-2296 of Seg. ID No. 2. The rnRNA transcription initiation site lies within this region at position 2790 of Seq.

ID No. 1 and by analogy at position 1788 of Seq. ID No. 2, shown *15 in Fig. 1 by the upward arrow. This suggests that positions 2548- 2790 of Seg. ID No. 1 and 1549-1788 of Seq. ID No. 2 contain S conserved promoter elements for the expression of OP-l mRNA, and approximately 500 bases at positions 2791-3317 of Seq. ID No. 1 and positions 1790-2296 of Seq. ID No. 2 contain conserved elements of the transcribed, but not translated, sequences all or part of which may be involved in the regulation of OP-1 expression. Additionally sequences upstream- of the homology region may also be involved in the regulation of OP-l expression.

Thus a range of upstream sequences, including sequences upstream of the transcription initiation site and not including the approximately 500 bases of transcribed sequence, can be fused in operative association with a reporter gene to modulate expression of the gene.

31 non-coding sequences and intron sequences also can be fused in operative association with a reporter gene, either separately or in combination with each other or with 51 non-coding sequences.

For example, one can place the 51 sequences defined by positions 2790-3317; 2548-2790 or 2548-3317 of Seq. ID No. 1, and either/both of 31 sequences or intron sequences in operative association with a reporter gene. The positions of the six introns are shown in Seq. ID No. 1 as bases 3736 to 10700; bases 10897 to 11063; bases 11217 to 11424; bases 11623 to 13358; bases 13440 to 10548; bases 15166 to 17250; SUBSTITUTE SHEET (RULE 26) WO 95 3 3831 PCTIUS95/07349 28- Also envisioned is a nucleic acid construct comprising a small fragment of 5' non-coding OP-i sequence in combination with additional conserved elements such as one or more Wt-l/Egr-1 binding sequences; a TCC binding sequence and/or a FTZ binding sequence in operative association with a reporter gene. Such a nucleic acid construct also could include intron sequences and/or 3' non-coding sequences.

A range of useful 5' non-coding fragments has been provided, and as will be apparent to those of ordinary skill in the art, smaller fragments of OP-1 sequence also are useful. Such smaller fragments can be identified to deleting bases from one or both ends of the provided 5' non-coding fragments, using techniques that are well known in the art and testing the truncated constructs for their ability to modulate reporter gene expression.

In this way, the shortest modulating sequences can be identified.

III. Transfection Considerations Any method for incorporating nucleic acids into cells of interest is contemplated in the method of the invention. Calcium phosphate (CaPO 4 followed by glycerol shock is a standard means used in the art for introducing vectors, particularly plasmid DNA into maznmalian cells. A representative method is disclosed in Cockett et al., (1990) Biotechnology 8: 662-667, incorporated' herein by reference. Other methods that may be used include electroporation, protoplast fusion, particularly useful in myeloma transfections, microinjections, lipofections and DEAE-dextran mediated uptake. Methods for these procedures are described in F.M. Ausubel, ed., Current Protocols in Molecular Biology, John Wiley Sons, New York (1989).

As will be appreciated by those having skill in the art, optimal DNA concentrations per transfection will vary according to the transfection protocol. For calcium phosphate transfection, for example, preferably 5-10 gg plasmid DNA per plasmid type is transfected. In addition, the DNA to be transfected preferably is essentially free of contaminants that may interfere with DNA incorporation. A standard means used in the art for purifying DNA is by ethidium bromide banding.

SUBSTITUTE SHEET (RULE 26 WO 95/33831 PCT/US95/07349 29- IV. Exemplary Reporter Genes There are numerous reporter systems commercially available, which include, without limitation, the chloramphenicol acetyltransferase (CAT), luciferase. GAL4, and the human growth hormone (hGH) assay systems.

CAT is a well characterized and frequently used reporter system and a major advantage of this system is that it is an extensively validated and widely accepted measure of promoter activity. See, for example, German, Moffat, and Howard, B.H. (1982) Mol. Cell. Biol., 2:1044-1051 for a description of the reporter gene and general methodology. In this system cells are harvested 2-3 days after transfection with CAT expression vectors and extracts prepared. The extracts are incubated with acetyl CoA and radioactive chloramphenicol.

Following the incubation acetylated chloramphenicol is separated from nonacetylated form by thin layer chromatography. In this S. assay the degree of acetylation reflects the CAT gene activity S with the particular promoter.

Another well-recognized reporter system is the firefly 20 luciferase reporter system. See, for example Gould, and Subramani, S. (1988) Anal. Biochem., 7:404-408 for a description of the reporter gene and general methodology. The luciferase assay is fast and has increased sensitivity. The system also is particularly useful in bulk transfections or if the promoter of interest is weak. In this assay transfected cells are grown under standard conditions, and when cultured under assay conditions both ATP and the substrate luciferin is added to the cell lysate. The enzyme luciferase catalyzes a rapid, ATP dependent oxidation of the substrate which then emits light. The total light output is measured using a luminometer according to manufacturer's instructions Cromega) and is proportional to the amount of luciferase present over a wide range of enzyme concentrations.

A third reporter system is based on immunologic detection of hGH, it is quick and easy to use. (Selden, Burke-Howie, K.

Rowe, Goodman, and Moore, D.D. (1986), Mol. Cell.

Biol., 6:3173-3179 incorporated herein by reference). hGH is assayed in the media, rather than in cell extracts. This allows SUBSTITUTE SHEET (RULE 26) WO 95/33831 PCT/US95/07349 direct monitoring over by a single population of transfected cells over time.

As indicated above and as will be appreciated by those having ordinary skill in the art, particular details of the conventional means for transfection, expression, and assay of recombinant genes are well documented in the art and are understood by those having ordinary skill in the art. The instant invention enables and discloses vectors, cells and a method for screening compounds to determine the capability of compounds to modulate the expression of OP-1 via the non-coding sequences of the OP-1 genomic DNA.

Further details on the various technical aspects of each of the steps used in recombinant production of foreign genes in mammalian expression systems can be found in a number of texts and laboratory manuals in the art, such as, for example, F.M. Ausubel 15 et al., Ed., Current Protocols in Molecular Biology, John Wiley SSons, New York, (1989).

VIII. Exemplary Homologous/Non-Homologous Recombination One approach to screen for inducers of (organ-specific) OP-1 20 expression in a particular cell line derived from a particular tissue such as renal or uterine tissue, is through gene targeting by homologous recombination (Sedivy et al., W.H. Freeman Co., New York (1992); A.S. Waldman, Crit. Rev. Oncol. Hematol. 12, 49 (1992)). In one strategy the endogenous (genomic) OP-1 gene is 25 replaced by another reporter gene which is optimally suited for screening assays, such as the firefly luciferase gene. To target the OP-1 gene in an appropriate cell line, a kidney cell line or NBT-2, the following arrangement of genetic elements can be assembled.

Genomic OP-l upstream and promoter sequences preferably 3000 to 5000 nucleotides in length, and which mediate the homologous recombination, are attached to the luciferase gene. The OP-1 upstream sequences down to the first coding ATG can be attached at the start codon ATG of the luciferase coding sequence, using a restriction site such as Ncol, which can be introduced by site directed mutagenesis into both the promoter and the luciferase sequences.

SUBSTITUTE SHEET (RULE 26) WO 95/33831 PCT/US95/07349 31- Also included is a selective marker, preferably the neo gene, without its own promoter. Preferably, selectable marker (neo) is placed downstream of. the reporter gene (luciferase), after an intercistronic sequence derived from the poliovirus genome and which allows translation of the sequence marker on the same transcript as the reporter gene transcripts. Details of this approach, including specific intercistronic sequences and the detailed steps of homologous recombination, are described in the art, including (Jasin et al., PNAS USA 85:8583 (1988); Sedivy et al., PNAS USA 86, 227 (1989); Dorin et al., Science 243:1357 (1989) the disclosures of which are incorporated herein by reference. As described therein, the endogenes OP-1 gene is replaced by the luciferase and neo coding sequences and the expression of these sequences then asayed in a standard A screening protocol.

A genetic arrangement of OP-1 promoter (as much genomic OP-1 upstream sequence as possible, up to 10,000 bp) and reporter gene (without its original promoter but joined directly to the OP-1 ATG or in its vicinity) can also be introduced into cells on standard eukaryotic expression vectors. These vectors carry selectable markers (neo, dhfr, etc.) and will typically be integrated into the host genome with variable copy number ranging from one to several copies without efforts at amplification. Also, if desired, the vector or gene copy number can be enhanced using a well characterized amplifiable gene, such as dhfr in conjunction with methotrexate. Commercial vectors designed for autonomous replication without integration are readily available. One source vector is the Episomal Expression Epstein Barr Virus Vector (pREP, Invitrogen Corp., San Diego CA).

Introns also can be tested for regulatory sequences as described hereinabove using the methods described herein. One or more intron sequences derived from a genomic OP-1 locus preferably is introduced into proper mammalian cells using, for example, a yeast artificial chromosome (pYACneo, Clontech, Inc. Palo Alto, CA) (Ref. Albertson, H.M. et al. PNAS USA, 87:4256, 1990), or other vectors adapted to allow transfer of large sequences, e.g., up to 1 megabases. As for the OP-1 5' or 3' noncoding sequences described above, the intron sequence or a portion thereof is incorporated in operative association with a reporter gene and the SUBSTITUTE SHEET (RULE 26) WO 95/33831 PCT/US95/07349 32ability of the sequence to modulate reporter gene expressions then associated.

X. Exemplary Screening Assay for Compounds which Alter OP-1 Gene or Reporter Gene Levels Candidate compound(s) which may be administered to affect the level of a given endogenous morphogen, such as OP-1, or a reporter gene that is fused to OP-1 non-coding sequence may be found using the following screening assay, in which the level of reporter gene production by a cell type which produces measurable levels of the reporter gene expression product by incubating the cell in culture with and without the candidate compound, in order to assess the effects of the compound on the cell. This can be accomplished by detection of the reporter expression product either at the protein 15 or RNA level. The protocol is based on a procedure for identifying compounds which alter endogenous levels of morphogen expression, a detailed description also may be found in PCT US 92/07359.

Cultured cells are transfected with portions of OP-1 noncoding sequences in operative association with a reporter gene, and such transfected cells are maintained with the vector remaining as a plasmid in the cell nucleus or the vector can be integrated into the host cell genome, preferably at the OP-1 genomic locus.

25 cell samples for testing the level of reporter gene expression are collected periodically and evaluated for reporter gene expression using the appropriate assay for the given reporter gene as indicated in the section describing reporter gene assays, or, alternatively, a portion of the cell culture itself can be collected periodically and used to prepare polyA(+) RNA for mRNA analysis.

Once candidate compounds are identified, they can be produced in reasonable, useful quantities using standard methodologies known in the art. Amino acid-based molecules can be encoded by synthetic nucleic acid molecules, and expressed in a recombinant expression system as described herein above or in the art. Alternatively, such molecules can be chemically synthesized, by means of an automated peptide synthesizer, for example.

SUBSTITUTE SHEET (RULE 26) WO 95/33831 PCT/US95/07349 33- Non-amino acid-based molecules can be produced by standard organic chemical synthesis procedures.

Provided below is an exemplary protocol for carrying out the method of the invention, using the CAT gene as the reporter gene and one or more mammalian cell lines known to express OP-1. The example is non limiting, and other cells, reporter genes and OP-1 non-coding sequences are envisioned.

Exemplary Construction Of Representative Vectors For Transfections A DNA fragment containing the OP-i promoter can be joined to a reporter gene for transfection into a cell line that expresses endogenous OP-1. Suitable cell lines are selected by Northern blot hybridization to an OP-1 specific probe (by analyzing the cell extracts for OP-I mRNA). Using this technology we have found several cell lines which make high levels of OP-1 mRNA, and some of these lines are the kidney line IMCD, the bladder line NBT II.

An approximately 5 Kb EcoRI, BamHI genomic fragment containing a;proximately 4 Kb of upstream OP-1 sequences as well as part of the first intron is blunt-ended with T4 DNA polymerase and cloned into a polylinker of a pUC vector (p0146-l). An approximately kb DNA fragment containing human OP-1 upstream sequences is obtained by deleting a portion of coding sequences and the first intron from p0146-1 with the restriction enzyme Ehel. The fragment has blunt ends and contains mostly 5' non-coding sequences and also includes a short stretch of 30 bases into the OP-i gene. This upstream fragment is of -3.5kb ligated to a 1.6 kb HindIII-BamHl fragment from the CAT gene obtained from the ~vector SV2CAT by 5' HindIII end blunted ligation. The 1.6kb CAT gene fragment contains about 70 bases of upstream sequences.

These ligated fragments are cloned into Bluescript vector (Stratgene, La Jolla, CA). This construct in turn is subjected to site specific mutagenesis to delete the extra sequences (approximately 30 bases) from the 3' end of the OP-I upstream sequences and the adjacent 5' non-coding sequences (approximately bases) from the CAT gene. This mutagenesis results in the elimination of any Op-i coding sequences from the promoter fragment as well as any non-coding sequences upstream of the CAT gene. Thus the resulting construct is a fusion of OP-i upstream sequences with the CAT gene sequences which encode the CAT SUBSTITUTE SHEET (RULE 26) WO 95/33831 PCT/US95/07349 34protein. This approximately 5 kb fragment is then excised from Bluescript using HindIII and BamHI and ligated into a HindIII- BamHI cut and gel purified back-bone of the pSV2CAT vector, for transfection into suitable cell lines.

Suitable cell lines include cell lines that have been shown to contain high levels of OP-1 mRNA, indicating that the OP-1 promoter is active in the cells. Two of these cell lines are mouse inner medullary collecting duct (IMCD) cells, and the rat bladder carcinoma line (NBT II). However other cell lines of the uro-genital system that produce high levels of the OP-1 message can be used in addition to the many previously mentioned cell types and cell lines.

The transfection of this vector into an OP-1 producing cell line is accomplished following standard techniques, i.e., transfection using calcium phosphate, liposome mediated transfection, electroporation, or DEAE-dextran transfection.

a The transfected cells are harvested 48-72 hours after transfection with the CAT expression vector and extracts are made by successive freeze-thawing. 2 lI of 200 4Ci/ml 14C- 20 choramphenicol (35 to 55 mCi/mmol), 20 gl of 4 mM acetyl CoA, 32.5 S: 1l of 1 M Tris-HCl, pH 7.5, and 75.5 pl of water is added to 20 ml of cell extract, and incubated for 1 hour at 37 degrees Celsius.

Upon completion of incubation, I ml ethyl acetate is added to the reaction, microcentrifuged for 1 minute and the top layer is removed. This top layer is dried down in a SpeedVac for minutes, and each sample is resuspended in 30 ml of ethyl acetate.

The samples are spotted onto a plastic-backed TLC sheet for chromatography. The thin layer is then developed in a tank containing 200 ml of 19:1 chloroform/methanol. The chromatography is run for 2 hours and placed under film for autoradiography. The activity of the C 14 in the monoacetylated chloramphenicol series is calculated as described in Current Protocols in Molecular Biology, 1993 (Ausubel et al., eds. John Wiley Sons, New York).

Upon determination of CAT activity, the main construct can be deleted in sections to determine the regions that are responsible for the observed CAT activity. Alternatively, the upstream sequences can be deleted unidirectionally, using an exonuclease SUBSTITUTE SHEET (RULE 26) WO 95133831 PCTfUS95/07349 such as Bal3l, and the deletion product can be analyzed in the CAT activity assay. This system can also be used in the method of the invention to screen compounds for their ability to modulate op-i expression by dividing the cells into several groups, and culturing one group in the absence of any added compounds, and culturing the other groups with one or more candidate compound, and comparing the resulting levels of CAT activity.

While a readily assayable, well characterized, non OP-1 reporter gone is pref erred in the method disclosed herein, as will be appreciated by those having ordinary skill in the art, op-i coding sequence also may be used in the screening method of the invention. The OP-1 expression preferably is determined by an immunoassay or by Northern or dot blot or other means for measuring mRNA transcript. See, for example, WO 95/11983, published May 4, 1995 for a detailed description on assaying changes in 09-1 levels in a cell or fluid.

XI.A Exemplary Screening Assay for Compounds which Alter OP-l GeeExpression in Endogenous Cell Type Models.

OP-i is expressed in a variety of different cell 'types, including renal, bone, lung, heart, uterine, cardiac and neural tissue. Candidate compounds can be identified which have a modulating effect on cells of one tissue type but not another, and/or wherein the effect is modulated in the different cells.

The assay described below can be used to evaluate the effect of a candidate compound(s) in a particular cell type known to express 09-1 under physiological conditions.

iCell cultures of kidney, adrenals, urinary bladder, brain, or other organs, may be prepared as described widely in the literature. For example, kidneys may be expianted from neonatal or new born or young or adult rodents (mouse or rat) and used in organ culture as whole or sliced (1-4 mm) tissues. Primary tissue cultures and established cell lines, also derived from kidney, adrenals, urinary, bladder, brain, mammary, or other tissues may be established in multiwell plates (6 well or 24 well) according to conventional cell culture techniques, and are cultured in the absence or presence of serumn for a period of time (1-7 days).

Cells may be cultured, for example, in Oulbecco's Modified Eagle medium (Gibco, Long Island, NY) containing serum fetal calf SUBT'TUTE SHiEET (RULE 26) WO 95133831 PCT/US95/07349 36serum at Gibco) or in serum-deprived medium, as desired, or in defined medium containing insulin, transferrin, glucose, albumin, or other growth factors).

Samples for testing the level of OP-1 production includes culture supernatants or cell lysates, collected periodically and evaluated for OP-1 production by immnunoblot analysis (Sambrook et al., eds., 1989, Molecular Cloning, Cold Spring Harbor Press, Cold Spring Harbor, NY), or a portion of the cell culture itself, collected periodically and used to prepare polyA+ RNA for RNA analysis. To monitor de novo OP-i synthesis, some cultures are labeled according to conventional procedures with an 2Smethionine/ 35 S-cysteine mixture for 6-24 hours and then evaluated V to OP-1 synthesis by conventional immunoprecipitation methods.

9 15 XII. Exemplary In vivo Animal Model for Testing Efficacy of V Compounds to Modulate OP-1 Expression It previously has been demonstrated that OP1 can effect osteoporosis on the standard ovariectomized rat model, as indicated by the dose-response increase in alkaline phosphate and osteocalcin levels following injection with OP-1. The osteoporotic rat model provides an in vivo model for evaluating 9 the efficacy of a candidate modulating compound. In order to determine the effect of a candidate morphogen stimulating agent on

OP-

1 production and, thereby, on bone production in vivo, alkaline 9 25 phosphate and osteocalcin levels are measured under conditions which promote osteoporosis, wherein osteoporosis is induced by ovary removal in rats and in the presence and absence of a candidate modulating compound. A compound competent to enhance or induce endogenous OP-i expression should result in increased osteocalcin and alkaline phosphate levels.

Forty Long-Evans rats (Charles River Laboratories, Wilmington) weighing about 200g each are ovariectomized (OVX) using standard surgical procedures, and ten rats are sham operated. The ovariectomization of the rats produces an osteoporotic condition within the rats as a result of decreased estrogen production.

Food and water are provided ad libitum. Eight days after ovariectomy, the rats, prepared as described above, are divided into three groups: sham-operated rats; ovariectomized rats receiving 1 ml of phosphate-buffered saline (PBS) i.v. in the SUBSTITUTE SHEET (RULE 26) WO 95 33831 PCT/US95/07349 37tail vein; and (variectomized rats receiving various dose ranges of the candiate stimulating agent either by intravenous injection through the tail vein or direct administration to kidney tissue.

The effect of the candidate compound on in vivo bone formation can be determined by preparing sections of bone tissue from the ovariectomized rats. Each rat is injected with 5 mg of tetracycline, which will stain the new bone (visualized as a yellow color by fluorescence), on the 15th and 21st day of the study, and on day 22 the rats are sacrificed. The body weights, uterine weights, serum alkaline phosphate levels, serum calcium levels and serum osteocalcin levels then were determined for each rat. Bone sections are prepared and the distaance separating each tetracycline straining is measured to determine the amount of new 15 bone growth. The levels of OP-1 in serum following injection of .the candidate agent also can be monitered on a periodic basis S* using, for example, the immunoassay described in sections V and VII above.

V. Exemplary Determination of OP-1 Protein Production 20 Where OP- 1 acts as the reporter gene, detection fo the gene product readily can be assayed using antibodies specific to the protein and standard immunoassay testings. For example, OP-1 may be detected using a polyclonal antibody specific for OP-1 in an ELISA, as follows.

25 lg/100 pl of affinity-purified polyclonal rabbit IgG specific for OP-1 is added to each well of a 96-well plate and incubated at 37 0 C for an hour. The wells are washed four times with 0.167M sodium borate buffer with 0.15 M NaCl (BSB), pH 8.2, containing 0.1% Tween 20. To minimize non-specific binding, the wells are blocked by filling completely with 1% bovine serum albumin (BSA) in BSB and incubating for 1 hour at 37*C. The wells are then washed four times with BSB containing 0.1% Tween 20. A 100 ip aliquot of an appropriate dilution of each of the test samples of cell culture supernatant is added to each well in triplicate and incubated at 370C for 30 min. After incubation, 100 pl biotinylated rabbit anti-OP-l serum (stock solution is about 1 mg/ml and diluted 1:400 in BSB containing 1% BSA before use) is added to each well and incubated at 37CC for 30 min. The wells are then washed four times with BSB containing 0.1% Tween SUBSTITUTE SHEET (RULE 26) WO 95/33831 PCTI/US95/07349 38- 100 i streptavidin-alkaline (Southern Biotechnology Associates, Inc. Birmingham, Alabama, diluted 1:2000 in BSB containing 0.1% Tween 20 before use) is added to each well and incubated at 37*C for 30 min. The plates are washed four times with 0.SM Tris buffered Saline (TBS), pH 7.2. 50pl substrate (ELISA Amplification System Kit, Life Technologies, Inc., Bethesda, MD) is added to each well incubated at room temperature for 15 min. Then, 50 pl amplifier (from the same amplification system kit] is added and incubated for another 15 min at room temperature. The reaction is stopped by the addition of 50 ti 0.3 M sulphuric acid. The OD at 490 nm of the solution in each well is recorded. To quantitate OP-l in culture media, a OP-l standard curve is performed in parallel with the test samples.

*VI. Exemplary Production of OP-l Polyclonal and Monoclonal 15 Antibody Sa.Polyclonal antibody for OP-l protein may be prepared as follows. Each rabbit is given a primary immunization of 100 1g/500 pl E. coli produced OP-l monomer (amino acids 328-431 in SEQ ID NO:5) in 0.1% SDS mixed with 500 W1 Complete Freund's Adjuvant. The antigen is injected subcutaneously at multiple a sites on the back and flanks of the animal. The rabbit is boosted after a month in the same manner using incomplete Freund's Adjuvant. Test bleeds are taken from the ear vein seven days later. Two additional boosts and test bleeds are performed at monthly intervals until antibody against OP-1 is detected in the serum using an ELISA assay. Then, the rabbit is boosted monthly with 100 pg of antigen and bled (15 ml per bleed) at days seven and ten after boosting.

a.Monoclonal antibody specific for OP-i protein may be prepared as follows. A mouse is given two injections of E. coli produced OP-l monomer. The first injection contains 100pg of OP-l in complete Freund's adjuvant and is given subcutaneously. The second injection contains 50 pg of OP-i in incomplete adjuvant and is given intraperitoneally. The mouse then receives a total of 230 pg of OP-I (amino acids 307-431 in SEQ ID NO:5) in four intraperitoneal injections at various times over an eight month period. One week prior to fusion, both mice are boosted intraperitoneally with 100 pg of OP-i (307-431) and 30 pg of the N-terminal peptide (Ser293-Asn 309 -Cys) conjugated through the added SUBSTITUTE SHEET (RULE 26) WO 95/33831 PCT/US95/07349 39.

cysteine to bovine serum albumin with SMCC crosslinking agent.

This boost was repeated five days four days three days (IP) and one day (IV) prior to fusion. The mouse spleen cells are then fused to myeloma 653) cells at a ratio of l:1 using PEG 1500 (Boeringer Mannheim), and the cell fusion is plated and screened for OP-l-specific antibodies using OP-1 (307-431) as antigen. The cell fusion and monoclonal screening then are according to standard procedures well described in standard texts widely available in the art.

VII. Exemplary Process for Detecting OP-i in Serum Presented below is a sample protocol for identifying OP-I in serum. Following this general methodology OP-I may be detected in body fluids, including serum, and can be used in a protocol for evaluating the efficacy of an OP-l modulating compound in vivo.

A monoclonal antibody raised against mammalian, .recombinantly produced OP-I using standard immunology techniques well described in the art and described generally in example VI., above, was immobilized by passing the antibody over an agaroseactivated gel Affi-Gell", from Bio-Rad Laboratories, 20 Richmond, CA, prepared following manufacturer's instructions) and used to purify OP-l from serum. Human serum then was passed over 1 the column and eluted with 3M F-thiocyanate. K-thiocyanante fractions then were dialyzed in 6M urea, 20mM P0O, pH 7.0, applied to a C8 HPLC column, and eluted with a 20 minute, 25-50% acetonitrile/0.1% TFA gradient. Mature, recombinantly produced OP-i homodimers elute between 20-22 minutes, and are used as a positive control. Fractions then were collected and tested for the presence of OP-l by standard immunoblot using an OP-i specific antibody. Using this method OP-l readily was detected in human serum. See also, PCT/US92/07432 for a detailed description of the assay.

IX. Considerations for Formulations and Methods for Administering Therapeutic Agents Where the OP-l-modulating agent identified herein comprises part of a tissue or organ preservation solution, any commercially available preservation solution may be used to advantage. For example, useful solutions known in the art include Collins SUBSTITUTE SHEET (RULE 26) WO 95/33831 PC~r/us95/07349 solution, Wisconsin solution, Belzer solution, Eurocollins solution and lactated Ringer's solution. Generally, an organ preservation solution usually possesses one or more of the following properties: an osmotic pressure substantially equal to that of the inside of a mammalian cell, (solutions typically are hyperosmolar and have K+ and/or Mg+ ions present in an amount sufficient to produce an osmotic pressure slightly higher than the inside of a mammalian cell); the solution typically is capable of maintaining substantially normal ATP levels in the cells; and the solution usually allows optimum maintenance of glucose metabolism in the cells. organ preservation solutions also may contain anticoagulants, energy sources such as glucose, fructose and other sugars, metabolites, heavy metal chelators, glycerol and other materials of high viscosity to enhance survival at low temperatures, free oxygen radical inhibiting agents and a pH indicator. A detailed description of preservation solutions and peas useful components may be found, for example, in US Patent No. 5,002,965.

Where the OP-l-modulating agent is to be provided to an individual, the donor prior to harvest, or the recipient prior to or concomitant with transplantation, the therapeutic •agent may be provided by any suitable means, preferably directly locally, as by injection to the tissue or organ locus) or systemically parenterally or orally).

Useful solutions for parenteral administration may be prepared by any of the methods well known in the pharmaceutical art, described, for example, in Remincton's Pharmaceutical Sciences (Gennaro, Mack Pub., 1990. Formulations may include, for example, polyalkylene glycols such as polyethylene glycol, oils of vegetable original, hydrogenated naphthalenes, and the like. Formulations for direct administration, in particular, may include glycerol and other compositions of high viscosity to help maintain the agent at the desired locus. Biocompatible, preferably bioresorbable, polymers, including, for example, hyaluronic acid, collagen, tricalcium phosphate, polybutyrate, lactide and glycolide polymers and lactide/glycolide copolymers, may be useful excipients to control the release of the agent in vi vo.

SUBSTITUTE SHEET (RULE 26) 3- 2-93;17:21 S 21 -41 As Will be appzeciated by those skilled In the art. th~e concentration of te compounds described in a therapeutc composition will vary depending upon a nlumber of factors, including the dosage of the drug cc be admimistreed, the chemial characteristics hydrophobicity) of the compounads employed, and thie route of administration. Where the Mor aagen-s t mulating agent is part of a preservation solution, th~e dosage likely w.ill depen for example, an rho size of the tissue or organ to b@ transplanted. the overall health status of thme organ~ or tissue Itself, the length of time between harvest andtrnpaaio the duration in storage), the frequency w.ithj whIich the preservation sol~ution Is changed, and the type of storage antIcipated, low tem~perature. In gene ral terms, preferred ranges include A concentration range becureen aboqt 0.1 ng to loo U;rIkg per tissue or or-car. weigic per day.

Where the therapeutic agent is to bc- actniftstered to a donor e: recipient, the preferred dosage of drug t~o be Admn.istered also is likely to depend on such variables as the type and extentr of pzogression of the disease, the Ov~erall health status of the patclrpatient. th eaiebilgclefcacy ofth ccDPOund selected, the forzmulation Of the COMPOUnd excilnts, arnd C its route Of Administration. In general terms, a suitable *.':ccm~pound of this invention mail be provlided an aqueous eq p ''sio~ogic buffer solution ccntaaincn about 0.001% to l0t W/v r-=tpound for parenteral aLdministration. Typical dose ranges are *e :wom about :0 rig/kg to about I g/kg of body weight per day; and seePreferred dose range is frwom about 0.1 p.g/kg to 100 mgfkg of body Weighh; per day.

T: ineto ma be embodied in other specific forms- without departing from the spirit Or essential chAracteristics thereof.

The prsn emlbodments are therefore to be considered in all rospct2as llutraiveand not resriactive, the scope of the ivention being Indicated by the appended claims rather than by the foregoing description, and all changes which com within the C35 meaning and range of equivalency of the Claims are therefore intended to be embraced therein- Throughout this specifcation and the cliMs which follow, unless the context reqwre Odhewise, the word "COMPrisen, andi Variations such as 'comprisesand "coMprising, wvil be Understood to imply the inclusion of a suatod integer or step or group of integers or steps but not the exclusion of any other integer or step or group of integers or steps.

WO 95/33831 PC'r/TT9 7fln ^^A -42- SEQUENCE LISTING GENERAL INFORMATION: APPLICANT: OZKAYNAK, ENGIN OPPERMANN, HERMANN (ii) TITLE OF INVENTION: METHODS AND COMPOSITIONS FOR MODULATING MORPHOGENIC PROTEIN EXPRESSION (iii) NUMBER OF SEQUENCES: 7 (iv) CORRESPONDENCE ADDRESS: ADDRESSEE: PATENT ADMINISTRATOR, CREATIVE BIOMOLECULES

INC.

STREET: 45 SOUTH STREET CITY: HOPKINTON STATE: MA COUNTRY: USA ZIP: 07148 COMPUTER READABLE FORM: S(A) MEDIUM TYPE: Floppy disk COMPUTER: IBM PC compatible OPERATING SYSTEM: PC-DOS/MS-DOS SOFTWARE: PatentIn Release Version "I (vi) CURRENT APPLICATION DATA: APPLICATION NUMBER: US 07/938,021 FILING DATE: 28-AUG-1992

CLASSIFICATION:

00 (viii) ATTORNEY/AGENT

INFORMATION:

NAME: KELLEY, ROBIN D REGISTRATION NUMBER: 34,637 REFERENCE/DOCKET NUMBER: CRP-091 (ix) TELECOMMUNICATION INFORMATION: TELEPHONE: (508)-435-9001 TELEFAX: (508)-435-0992 INFORMATION FOR SEQ ID NO:1: SEQUENCE CHARACTERISTICS: LENGTH: 17415 base pairs TYPE: nucleic acid STRANDEDNESS: single TOPOLOGY: linear (ii) MOLECULE TYPE: DNA (genomic) SUBSTITUTE SHEET (RULE 26) WO 95/33831 PCTIUS95/07349 43 (vi) ORIGINAL SOURCE: ORGANISM: horno sapiens (Xi) SEQUENCE DESCRIPTION: SEQ ID NO:1: TCAACCGGTC TCTT'TAGGTT TI'GGCTGTGC TTrMTACTAT TCATTCAACA GGTACTAATT GAGCACCTGC T1GTOTGCCAG GCTCAGAATA GGCTCAGGTC AGATGCACAA AGAAGGGTAA ACTAGAATCC TTGCTTAGAC ACTOACGGAT CAGTTGTTTC ATATGTAAAT TGTAGCACCA AGACCTGCTC CCCCTOCCCC CAGCCTCACc TGCTTGTGMA GATCCCTCCA AAACATTrGA GAGTAGATAA AAACCAGAGA CTACTACTGA AGAACAGGGC TGCTTTGGCT CCTTATTATT TCAGACTTrG GAAGA.AAATG ACCTCCTITT TCTCTACTGG CACTGAGTGC ATAGCTGACC 120 180 240 300 360

TAGCAAGCCA

TOCTCTGCAG

TGTCTCTTTC

CCACCCTCCA

TGCAGGCTGA

GTGGCACTCC

CACCTTTCCT

AGAGTGATAG

TTGCTTCCCT

CCATGTCTTC

AGGTGCAAAA

TGGTGACCTC

ACTGTCCAGG

GTTGAAGGAA

TGGT GGGTOG

CTGGGGCTGT

CTCTGCCTCC

CAA=GAGAC

GGCCTGGAGG

CTCAAGCACT

TTGTCTTTCA

TCACCTCACC

AGTGACCCAG

TGCAATTTCC

TCTCCCTCCT

ACAAGATCTG

GGCCTGGAGG

CTGCCCAGCA

TTAGTACGG

AGAGTAGGAA

TTGCAGGCCC

GGAGTGAATG

GTAGAGGCCC

GTCTAAATGG

CCTTTCTCCA

CCAGAGGCCA

GCGTGTGCAG

TGCTGTTCCT

GGACTCAGGT

CTGTrATCT

GCTCTCCAGT

CCACTCTCCC

C-ATGTCCTC

CCTCTCCTTC

CGGCTCCTTG

TOCGTGCTTGG

GCAGGGGGTA

ACCAAGTGTG

CACAGCTCGC

GATGAAGAGC

CTCCCTGGCA

CCAGGACCTG

CCCATGTGGC

CTTGGCAAAC

GGCTGGGGAc

CCACCTGGGA

CAGTGGCATC

GCGCCCCCGC

TGTACACTCT

TGGOTAGGA

CTCTGCCTGG;

ACTCCCTGAA

ATGGAGTCTG

CCCTGGGACT

CTTTGTTCAT

GGGCCCTTAA

CTCCTGATAT

AGGTGCTGGG

TGGGGCTCAA

CAGGCTGGCA

CCCTCAGGCT

rACI-rCTGCT

CGAGCCTGGT

TGCcTTrCcc

TCCTCCAA.AA

CCCCACTGCC

CAGATGGACC

TTCCTGCTTG

CTTCTGAATT

TCTTATTTAA

CCATGTGGGT

GGCCACATAA

AGGTGATTCA

GAGCTGGGGG

CCTGTGC TCC

GGGTGGTTTG.

GACCTGTTCC

TTCTGCT

GCCATCTACT

CCAGAAACT

TTCTGTTCCC

TGGAAAkAGZc ACTCCCCTTc

TGTCACTTAT

CTGGACGACT

CCAGGATGCCC

GTTTCCAGAG

GGCTCTTGCT

TCGCTCATGG

TATCTGGGCC

OAACCACATA

GCCCTGTACG

ATGCTTGTCT

AGGGCCTTGC

ATCCCACAGC

CCTTGCCTGG

CCAAAAGTCC

GTAGAAGACC

420 480 540 600 660 720 780 840 900 960 1020 1080 1140 1200 1260 1320 1380 1440 SUBSTITUTE SHEET.(RULE 26) WO 95/33831 PCIJS95107349 44.

ATAATTCT

GAGCCCCT

AAGGCCCT

TTTTACCC(

COCACAGGC

COCTATTG;

CTCAGGCAC

ACTGCCACG

GCTGAGGGG,

CAGCTCACAC

ACCAGGC~CC'

GCGCCCCAGTC

CTCAAACAGc

GCGAGGCGAG

GCGTCTGAG

COAGAGACAG

AAGGATACAT

TTCCGCGCCA

TGCTCGGGCC

TCCTCCAGCC

AACATTTIGT

GGCGCGGCCG

TCCTCCTiCCT CCTCTTOTGc

CGCCGGAGGT

GGAAGAAGGA

TGGACTCCTA

CT TCCCCAGC' CC CAGACAAG( T GGGGACCC) :G CTGCCCTCA ;A CCGGTGGT 6T TGAGGATG 'A CACCCTTGG, A GGAGCGC7TGJ T' GGCTGGAAAC GCAGTTCAC7 r GGcTTCAAGG

CTCTGGGTGT

AATTCCACAC

GAAACAACCT

GGGGCGGGAG

GCTGGCMACG

GGGACTAGGG

CCTCCGCGCT

GCCTTCCTCG

GCATCCCCC

CGAGCGCTCT

AGGGCAGGTG

CCTCCT'CCGC

CATCCAGGGC

TGGAAGAGCG

GCOCTCGCCC

GGCT'TGCTGG

Irc TCCTGCTC :G CCCCCGCT XC TCTCTCAC, 6C TGCCACTC.

T CTGAGTGGJ A ATGGAT13AC.

GGGGAAGAG

STGCGAAGCC

ATACAGCGC

TATTCACTCJ

CACTGCGGG

CTAGCCGGGC

AGCAkAGAGAA

CAGCTTGGCA

GTGGTGAGTG

GCTTCAGGGA

GCAAGACCGG

CCCCCZ-J-CTT

TCCGGACCGC

GACGTCCCGC

AGAGGGAATG

GGAGGCCGCC

CCAGGCCCCA

GCACMA.GGCT

TGGGTTGCCG

GCCCGCCTGC

CTGCTCCTCC

A GGAAGGACA C CCCAACCTC

ZAGCCCCAGG,

2GOGCAGTA2

TGGGGACTCC

AGAGACAGGA

ATGTGAAGAC

TAGTGGTGGG

CCCM.?L'GAGGA

ACAA.ATCOTG

ACCAGACCTG

G CCCC;LAG~T A GCCCTTCCCA k. GGGAAGGAGA k. TTCCCTTGAG

CTGTGACAGC

GAGGAGGCCG

CAGCGGCTCGG

GCTGCGTC C GGAGGTGGGA

A~

ACTGCGCACG

T

CGAGAAGAT

C

ACOCTTAcGCA

GTTCATCCCA

CAGGAGAC

ATCCCACACC

GTOCATGCT

A=TGGAGG;T

:TCCCCAG3GC

TOCTCTCAG

~GAACCCCCC

ACAGTGGCT

TA1AG.-AGCCA ATAAAGAAGG

CACGGAGTA

ACTACAGG.1, AGPAAACAAA CGTCGAGGG GGTCTGGAG GTCTCTGGGA

GGGAGAGGTC

GGCGCGGAOG

CTCAAGGTCA

TTCCCACCGC'

GAGTGCCGAG

CAGGCTCTAG

AATGAACCCA

GCCOGGAG

GCGCGTACCA

GGGAGAGCOC

CCGCCCGAGC

CTCCTCGCTG

CACCCGCGCC

CAGGCGGAGG

GGTCAGCGTIG

CCGCCTCCAG

GGTCCGCAGC

AGGGCACCGC

GCACCCCGTG

CTGGGCACAG

GGGCCCCTCG

CTCTGGCGCT

CCCOGGGCCC

GCCAGAGCGC

CCTCCCCCC

CGCCTCCTCA

GGAGAAAGCA

GAATGGCGAG

GCTGGCTTAA

GACCTTCTAT

CCACCCGTCC

CCGCTCCGAT

GGCACTCACT

CTGGGGGAG

AAGCCCGTCC

CCCGAGGCGG

CTGCTATCCG

CAGAGGAGCG

CTTGGCTCTC

CTCGCCTTTT

1500 1560 1620 1680 1740 1800 1860 1920 1980 2040 2100 2160 2220 2280 2340 2400 2460 2520 2580 2640 2700 2760 2820 2880 2940 3000 3060 SUBSTITUTE SHEET (RULE 26) WO 9513383 1 PCT/US95/07349 CGTTCGCCGG GGCTGCr-rTC C;AGCCCTGC GGTGCGCCCG- GGCGAGTGc CCCGGGCCCA GCACCGAGCA GGGGCGGGG GTCCGGGCAG AGCGCGGCCG GGCCATCTCT GGCGCGGCCG CAGCGGGCC CGTCTGCAGC AAGTGACCGA GGCCGCCTGC CCCCTCTGCC ACCTGGCGCG GTCGGCCC GGAGCCCGGA CGCGTAGAGC CGGCGCGATC CACGTGCGCT CACTGCGAGC TCGGCGCCG TGGCGCTC'n3 GCGCACCCCTIG TTCCTIGCTGC GCTCCCGCCCT GCGCCGACTrC ACGAGGTGCA CTCGAGCTTC ATCCACCGGC GCCTCCGCAG CCAGGAGCGG AGCGCCAGAT CCTCTCCATT TTGGOCTTGC CCCACCGCCC

GCGCCCGCAC

AGCACAACTC GOCACCCATG TTCATGCTGG ACCTGTACMA CGCCATGGCG C

GGCCGAGGOG

GCCGCGGAGG

GCGGCGcGAC

GCCCGGGTAG

CACAGCM~G

ACCCTGGACA

CGGGACATGC

-TCCAGGGCA

TGGAGGAGG

3120 3180 3240 3300 3360 3420 3480 3540 3600 GCGGCGGGCC CGGCGGCCAC

GCCCCCCTCT

GCTTCGTCAA

TTTGAGACTG

GGCTGAAATC

G T "'TGCGCCC

GGATCCTCCG

GGGCGTTCAA

CCTGOATGTA

AGCCCTGCCr

ACCTOTCCCC

TCTCCGOGCC

GCTAAT-Ir C CTTTTCTTrT AG7TGCAATG

GTOCCTCAGC

GTA7T?TAGT

CAGGTOATCC

GGCCAGCCTG

CCTCGGTGAG

GGAGGGAGGG

GCACTOCCTG

CCAGGTCGGG

AAGTCCCCTC

AGCGCGGGGC

AAGGGCCCTT

GGCTCTGGCA

TCGTGGTGCG

CCGATCCCCC

TrTTTTTTCT CTTT'1-TT

CGCGATCTCT

CTCCCGAGTA

AGAGACAGGG

TCCCCCCTCA

GG-CTTCTCCT ACCCCTACAA GGCCGTCTrC AGTACCCAGG CAACATAGCC ATTTCCTCAC COACGCCGAC

ATOGTCATGA

TAAGGGCAGG

AGCCGCT'TCT

CCCGAGGGTC

CCGCTGGGTC

CATCI'ACGC

TCGOTCATGT

CCCGGCGAGG

TCGCGGCCGT

CCCGCCTTAC

ATTCTCTCTT

TTTTTTGAGA

GCTCACCGCA

GCT'GGGA.7TA

TTTCTCCATG

GCCTCCCAAA

CGAkGGGTACG

TCT.ATGCAGC

TCCCACCCAC

GGTGAGCCTG

COCCGGCCGC

GAG-CTGTCCC

CTGCCTTCC

CGCACCCCCT

GCTACCGGCC

GGCTGGAGCT

A7"1rTTTTCT

CCGAGTTTCA

ACCTCTGCCT

CAGGCATGCG

TTAGGCAGGC

GTGGTGCTGG

CCGTCTCCTT

CCGCCCAGCT

AGCCC'TATGA

TAGGGGTTAC

ATCTCTGGGG

GGGCCGGCGC

CCCCTrTCCTG TAcCCTCCCT

CTCCGAGCC

GGGGA.AGAAA

TI~mC I I 1"

CTCTTGCTCO

CCCGGGTCA

CACCATGCCT

TGGTCTCGAA

GATTACAGGC

TCGGGGGCAC

TTCCCCTCCT

CTCCCAAGcT

TGGGA.AGGAG

CTGGAGGCAA~

COGTCCGTGA

GGCCCCTCTC

CTCAAGCCCT

TTGGGGCCCC

CGGTCCCATT

TrTTrCTTTr

CCCAGACTGG

AGCGATTCTC

GGCTAATTTT

CTCCCGATCT

CTCAAGCTGT

3660 3720 3780 3840 3900 3960 4020 4080 4140 4200 4260 4320 4380 4440 4500 4560 4620 4680 SUBSTITUTE SHEET (RULE 26) WO 95/33831 WO 9533831PCTIUS95/07349 46-

GCCCTGCCGC

ATTTTCAGCA

GGATCTCAGA

CGACCCCGGC

OTOCGCGCAC

TACTCTTCTA

TTI'ACCACGT

GCTGACGACC

GACGGCAGCC

ATTCTCCAGA

TTTTAAGTAT TTACTGCTAC GTCCCGGGCC GTGGCGCGCA A.ACCACAGGT 7TTGCCATT GCGGGGGCCT GGGCGTCCCG G=CCCACT TGGGGCTGCA GCCGAGGGCC GGGGAGCTCC CTTQCTCAAA CTAACCcCCCC GGAGCAGCGC

GGCAGAATCT

GGGCGCCG

GGCCCGCGA

CCCTCCATAT

ACGGGCTGGG;

ACTGATGATC AAATATTTGG TTTCCGAGAT AACACACCCC GATAGCGCTG TTTCCTGAGc CGCT?1'CAT

TCACOCCCAC

CTGGGGCGTG

CATAAGGT

ACTACTGAAC

CAAA)jAGTT

ATI'AGAACC

GCATGTGTGC

ATTTACTGG

TCTGAT1Tr

TTAACTATAC

GADGCTCTGTC

TATAGCATCT

GCTGCCTTCA%

GAAGGCCCTG

TAGGCCCGGG

AACTITGCTC

GGAACOCCAC

CTTTCATCTT

TTGGGCTTTG

GATGGCAGAG

CTACTTGTT

GGGCCTGTCTT

GACTGGGGGC

CCCIGGAGTT

CAAGCTTCAG

TAAATTATAC

ATCTCCAAGA

?TCTATATCA

AGGGGTATAT

CGTCGTCTGC

CAA LAATAA

GCCCTCCTCA

TCCCTTCTGT

GAGCCTGGCT

CAAACCAAGA

GCTCCCTGTC

CGGCTATTT

ACCTGGGTGG

GAAAGGACAA

GCGACCCTGA

TGGCTTTTAA

AACTTOCTGC GAAAACCCCA ACCAACTCAA GACAGCAAAC CAkACATGCGA

GCGGGGGAAG

CCCGGGAGCC

CGAGOCAAGG

TAAGCAGCCA

TGIATGAGT

TCGTGTCCTC

GGCGGGGGCA

ACTTCTGTAT

AGGAAAATTC

ACCCTCGCGT

TGGGTACCCC

GGAATCATTA'

GCAAAAA.AC

CCCAAGAGA.

GCTCCCCCCA

I?'T~CCTCCT

AGACCGOCTT

CTTTCTCACG

CAGACCAC

ATAATGCATAC TGAACCCCCA CGCTGGGCAC

CGCAGATCCG

ATTGTCTGTA

GGAGGGAGGT

GTTAAGAAGG

GG;%AGrlAGC

CTGGAGGAAG

TaGCTGGGGC

TTGTGATTTT

C.AAZATACATA

TAGCCAGGCC

GGACTCCCAC

AAAAGGTATT

CCCCACTCCT

AGACCAG=T

TGGCGGCAGG

CTGGCTGTAC

GTCTIGAGCCT

TCTAkGCTTTC

TGACCTTCTT

CC2TCATGCT TCCCCTCCTC C",TAATA ATA

TTAGATGCCA

AAG,'CAGCAAT'

AAGGTGCAGA

ACACCAGGAA

TT;ACCCACTG

TrTAAAACA6A

CATATAAATA

CCTTTCTCTG

TGA ATGTGCA

TGTAATCTCT

TATOGGCCCOG

GCTCGGAGG

AGCAAGCTG

ATACACCTTT

CTI'AATCAGT

TGGGACATCA

TTCTTTCTCT

ACTAALATCCA

AAAT1'ACCTT

ATATGACCTG

T'GAGTGGGCT

CTGGAGAGAG

GGAGGTGGGC

TGTGTATPT-A

ATGAA;CCGCA

GTGGGGGATT

GOTCCCAGTG

COCTTCTGCA

CAGT1GTGGGC

TGCCTCTGGG

GACTTGTI'TG

CAATCCAT T

CAGGCTGGCT

CTCCAAATrA

CTCTGTCCCT

4740 4800 4860 4920 4980 5040 5100 5160 5220 5280 5340 5400 5460 5520 5580 5640 5~700 5760 5820 5880 5940 6000 6060 6120 6180 6240 6300 SUBSTITUTE SHEET (RULE 26) WO 95133831 PCTIUS95/07349 47 AAACTCGAGG TCATTAGI'A GGTGAAGACC AGATGCTTCT AATGOrGCCCC TrTAATTTrC' CTCCCT1'CTA TCCTTTA GCTTGGA.ATT AGGGTTGGAG AGGGTTGGGG GGAGGTGTAG AAAGTACTGC TATA =GTTT TTCCTTGGAT TCAAGTGGAT TGAGAGGATG GAACAATAGA TCGAAGAGOG AAAGGTACA.A AGAGGTGTTG GGAA.ATATCA GCGGTGAGTG ACAAACAGAA TGGGCTGCAG TTTGGCGAGA CACTTCCT GCTAAG;CAGC AGCACACAAA TAAATGGCCT TCTCCATAGG AGGGACTrGG GGGTGGCAG;T GAGACrI'GTC TQGCCACTGA oTTTGCTGAG TGCAAATCAT GTIGATCTCA ACTGCTGATT AGGAGGATAT GGCTCAGGAC AGTCAAGTAC GCACTGAATG ACCCTGAACA GGG;CTGCCCT CTCTAGTCGA AGGPCTGGAA. GTCAATTATr GTCTCCAGCT TTTGTCCCAC CCTAACCGAT GGACCATCAA; CTTCATCCAT

TCCAGGAGCO

TTCACTCAAG

TCAAAACCTG

TGGAGTGCC._l

TCTCCTGCCT

TTTTTTrGTA

CCTGACCTCG

CCGTGCCCGG

CTCACTCACT

TTGTCGACTT

TCCAGGGA-G

TACTCATCAT

CAAGCTCACA

GGTG3CAGTGG

TGACCTCAGT

TTGTATT

AACTCCT13GA

TGAGCCATCA

CTGAGG'rTCT

ACTATTGG

CTCTAXITrTT

TGCOCGATC

CAGCCTCCCG

TT'ITTAGTAG

TGATCCACCC

AATCTGCTCT

AAGATATTAT

AGGCATCTGG

ATGTTTCACC

GTAACTTCAG

CTGACTCCAC

CCAAATCTCG

CTCCCAAGTA

GTAA77TTT

GGGAATTCCC

GATATGCGTG

TTTTrrTTTT

TCAGCTCACT

AGTAGCTGGG

AGACGGGGTT

GCCTCGGCCT

.ATTTTTAA

TTACAACCCC

CTTGCAGCAA7

CTTCATATTG

TGGGATGGTC

CAAGATCTTA

GCTCACAGCA

GCTGGGACCA

CTAGAGACAG

AGTG;CTGCCT

CATGAAAGCA

GGAGATGGAG

GCAAGCTCAG

AA;TACAGG:-G

TCACTGTCTr

CCCAAACTTC

AGATATCAT

ACCATAGATT

CAGCTGGCTT

AGGAAATGGG

AGATCTATCT

AACTAGAAGC

CCTTCTG-CCT

TAGGCATGCA

AGTTTCACCA

TTOCCTACCA

GCGAAACTGA

ACCATGCCAT

ATGTAATTAT

TCTCGCTCCA

ACCTCCAGGG

CCCGCACCAT

AGCCAGGATG

TGGGATTACA

TGCAAACTrr

CAAACCTCTG

TCCTGTCTAT

CACAGAG; C

TTAACCTGGC

CAGGAOTTCA

CCTGGGCTCA

CCACTATGCC

TGTTGCCCAG

GAGTGCCGGG

CAGATGAGAA

GTAACATCCC

TCTTTCTCA

GCGCACAACC

TCACCCAGGC

TTCACACCAT

GCGCGGCT;A

GTCTCGATCT

GGCGTGACAG

GGGCACTrCA TCCTAGALATr,

GCTGTCTCCT

CCATrTCTCT

CACTCTTCCA

A.ATCCTAGCT

AGCGATCCTC

rGGCTAATT

~CCCAGTCI'

ATTACAGGT'G

AGCAGA.ACCT

6360 6420 6480 6540 6600 6660 6720 6780 6840 6900 6960 7020 7080 7140 7200 7260 7320 7380 7440 7500 7560 7620 7680 '774 0 7800 '7860 7920 CTCAAGCCAAT CTTCCCACCT TGCTACTGC CCA CAGTTGC SUBSTITUTE SHEET (RULE 26) WO 95/33831 PCY/US95/07349 48 CGTGAGTCCA CTCACTAAGA GACTCCCTAC TGAATGGCAA TAAACAACrT GGTCGCCCAA ACATGTAAAA GAAACAGAGT ATTCTACAAA TGACATPTACC TTTTCTI'GGA ACTTGATGAA ATGTGACCA CrGGTCTTT ATTATGGCT AAATGCCAAC TAAGAACATC GAAGTCTGA 1 CCCAAACTCA AGCAGTGGTT CCAAGCCCCT AAGCTTAGAz~ GTGAATTCTA CTTACTTATT AATCAAAATC ATCTGTAGAG CTTGTTALAAA C TrGACTCAGT AGGTCTCAAG TAGGGCTCA C TTTCTTTCT'G AGTCTrCI-r GACTTGATGA CAACAGTCCT TATCAGTTAT TOATACTrTCA CAACTCAGAA ACTCMTTAAT GTAAGAGAAG AAATGAATr ATCAACAGTT TCCTCGCTc TGGAAAATA CCATGGGTA ACTTAAAACT GGTTCTCAAA :ACAGGTTGC TGGTCCACCC C AATATCCAT TTCTAATGAG c

TCTCATCA.AT

ATAAGATTAT

ATAGGCMACC

ATCAAACCCA

AACTCTATCT

ATACGACACA

ACGACTTTAA

:TrCAAGGTG

AAGAGTGTC

Tcc^AGGTGA

"TAGAAGAA

ATAAACAGA

TGTTATGCC

CTCTAAGTGT TAGTCCTCGG TCTTGGGACC ACAACTTTGG

CTCAAAGATC

AAAkGGTACAA

ATCAAAGGTG

CTGTGGAGCA

TCCCTACAAA

ACTTTTAAGA

GGAGTGAGTG

AAGTGAGGCT

CTGCCAGGTT

ATCTrGAACT

ACOCACTCTA

GAACACTACT

TGAATATCAG

CCAGTGACTG

GAAGCAGCCT

GACACTAGGA

,AGAAAGGGGT

TTTTAACCAC

AGTTCAGATA

ACCCAATGCT

AACTCATOTT

GGCATTTGGG

AGTTCCCATT

GCTTCTGOTG

AGGATGCAC

TCCCAGTCCC

GAGTATTCTA

CACTTCTCCC

GGCCCTCAGG

CCAGCTAATC

CCTGATCCAT

AGATGOCCCT

GGAA'TATTT

TTAGACAGAG

AGCATTATT7A

GGGATGGGGT

GAAATTTAAT

TCATGAGGGA

CTAOTGGGAC

ITTTTA.TCTGT

ATGAGGCCCT

CAGAACCATG

TTATAGCAAC

ATACTCTGGC

CACATTCCTC

CTATCATAGA

GGCCAACAAT

TGAGCTOTGA

TAAAATTGTG

GTGGGATCTA

AATGGTATCT

CCAGGTGTC

TGCCAGTGTA

TCCACCTTCA

TGGATTAGTT

TTGCAGGCAC

CACCAGAAGC

AGCTA).ATAA

ACAAGACAGA

CTATGGACAA

TCTGCCCCTT

CCCCACCT

CAGATTCACT

OTCCTACACT

GAACAA TTGA GTWAAATAcG

AGAACAGAAA%

c ATGGATAAAC TTCAGGGGCC 7980 8040 8100 8160 8220 8280 8340 8400 8460 8520 8580 8640 8700 8760 8820 8880 8940 9000 9060 9120 9180 9240 9300 9360 9420 9480 9540

TATGG-LMG

ACATTATTGA

GGGATTAGTG

ACCATACAGT

TTCCTTrCCCC

TGACCAGATG

ACCTTTTC

CTAAGACACA

GAGTGACAGA

CCTCCCTTCT

CCCCTGACTT

TTCAAGAA'T

TGAAMCTI'CT

ATGTGCGTTTG

GAGCTTATOG

CAGTCTCCAG

GGTTGTTATA

TTCCACTTCT

TGGCTGCCTC

TCTATAAATT

GTGGTAGAMk

CAGACAAGAG

TGCAGACTCT

GATTOACCA

TGAACTAAGA

TAGCATCTTG

SUBSTITUTE SHEET (RULE 26) WO 95/33831 PCT/Us95/07349 49- GTCAGTACC CACCAGGGCC GTGGAGAGGG CTGGCTGGAG TGAGAGACCT

TGGAGGGAGA

CTCACAGCTG AGGCCTAACT CCTCTTTCT'T GGGTCAATGG ACTAACCCAG TCTGGGGTGG GGAACCCCGG

ACTTCAAGA

CCTCTTCAGC AAC-GCCCAC 9 TCATGGTGGA GGGGCAGTCT

C

CTCAATGGC TGAAAAAGAG

A

TGATAACAGG GG;CAGAGTTT

C

GACCTCTAAG TATCTCATT

A.

ACAATTTCA ATAACATAGT

C'

ATGTGCAAAC TGAGATAATG OGACATOGA

ACAAGGGTAAJ

AGAGACGGGC AGAGGAA.AGC CCTGCCMAGA

GGAGCAGAGA

GGTAATAAAA GGAGGCAAAC ATGA'TTTCC

ATGCTTACA

ATCTTTATGT CCATAAGAGG CATCCTOT

TCGAACCTCT

GGGATGGTG CAAGGGACCA TCAGTAGGA

GGCATAGTAC

GCTTTTAGAC TAGTCTVCCT CCCATQCTCC

TCCTCCCATT

CTGCTACCTA GCACACCAGT GCACCAGATC TCACTCAAAjA rCACCTCAA AAAGGCTGA), GAGCAGACTO

GCTGGCTTCT

;GGAGGTTrr AACGG'TGAAG ATGAAAACTT

TCACTTMG

AGGACCAGC AAGTGAACTG AAGCCTCCTG;

GAAAGCATCT

AAGATGAGA AGCTGTGGCA CTI'ACTCTG

CTTTGCAAT

~TTAAAGGA CTCAAACTCT AGACTCcAG

GACAAGATCT

TACCCTCCC CTCCTTCCCC CACC'ITCACC

TCTTCTTTCA

9600 9660 9720 9780 9840 9900 9960 10020 10080 20140 10200 10260

TCACAGGCTT

ACTGCTCACA

GGTTACTccC

TGACCATG

AAGGAGCAOT

ATGCTTAGAC

TGOTGTTCTCT

ATCGAGAG'fl AAkTTcCGGAT

GCGTTTATCA

AGGTGCTGAG

ACCCCATGAG

GCCCGTGTCT

ACAGGGCAC

TCCAGACCCT

CTACTTTTcc

GACCATGGOT

TGTCACTGGG

TCAGAGCCAG

TCCTCT~CCA

CCGGTTTGAT

CTACAAGGAC

GGTGCTCCAG

T'7TCCTCTGG

CTCTOCTTCC

cTCCTcCTCT TCTTAGAGCC AGGCACGGTG TrGGGATCAG GAACAAGCyC~

GTGCTACTTA,

CAGCAGGTTG

CTGAGCCTGT

GTCACTGGCA

AGAGTGAAAC

GTOGGAACATO

CICCAAGA

TACATCCGG

GAGCACTTGG

CGGCAGAGGA

CATCTGTTOG

CTCGCAGGrGA ^AGAAGCTTcc ArG^'CCTCTT GGATGG;CTGT

GATGCAGAAT

GACCCTCCAG

ATGGGC^'TOC

CCAGACACTA

ACMAGGA2T

TCCCAGAAGG

AACGC'DTCGA

GCAGGTGGGT

AGAAGGTrGGT

GGTAGTGGAG

ATCGGATCTC

CATGCTCT

TCTACAGTGT

CTCCATCTAG

ATGAGCTGTc

CTTCCACCCA

GGAAGCTGTC

CAATGAGACG,

GCTATACGGG

GAGGGTTTCC

CTGTGACCTO

TCGT1'CAGGA

GTTGOTGAGG

CTTAGGCAAG

GGTCTT'GGTG

CGCTACCACC

ACGGCACG

7ITCCGGATCA

TATCTCGGAG

CTCCCCTcCCC

CTAACGCGAA

10380 10440 10500 10560 10620 10680 10740 10800 10860 10920 10980 11040 11200 11160 CTCTGGGCCT CGGAGGAGGG CTGGCTQTG TTTGACATCA CAGCCACCAG

CAACCACTGG

SUBSTITUTE SHEET (RULE 26) WO 95/33831 PCT/US95/07349 OTGGTCAATC CGCGGCACAA CCTGGOCCTG CAGCTCTCrC TGGAG.AC~CT

GG;ATGGTGAG

TCCCCCGCCA CTGCCAGTCC TAATGCAGCC TGTGCTCCTG GACTTrCACA

GGCTCTCAGC

AGTGCTCATG CTTCCTTCAC TACAALACAGG CTTCCCCGCC CCTCCCAACC

AGTACTCCAT

GTTCAGCCTr TTCATCCTGC AGCCCTCTCC CCCTCGTGGc CCTCCTGTA

CTGCTCTTCT

GTGCACTTGG CTGCTTCCTG TCCAGGGCAG ACGATCAACC CCAAGTTGGC

GCGCCTG;ATT

GGGCGGCACG GGCCCCAGAA CAAGCAGCCC TTCATGGTGG C'TrCTTCMA

GGCCACCAG

GTCCACTrrCC GCAGCATCCG GTCCACGG;GG AGCAA.ACAGC GCAGCCAGAA

CCGCTCCAAC;

ACGCCCAAGA ACCAGGAJAGC CCTCGGATGG CCAACGTGC AGGCTATCTT

AGCTCOGACG

GATCACAGAC CCACCACAGG AACCCAGCAG GCCCCGGCCA CCGCAGGAGA

CTGACTAAAAJ

TCATTCAG~ CTCACCAAGA TGCTCTGAGC TCTCTTCC-AT TTAGCxLz.Ac

CAGGAGTCCG

AAGATCTAAG GAGAGCTGGG GGTTTGACTC- CGAGACCTCG AGCAGTCCCC AmGtCCM'GT c7TGACTCAC GAG.TTAGACT CCACTCAGAG GCTGACTGTC TCCAGGGCTCT

ACACCTCTAA

11220 11280 11340 11400 11460 11520 11580 11640 11700 11757 11820

GGGCCACACT

GCCAOTTGGG

CAACCAGTAG

GATCCAGGAG

TCAGTGCGC

TCCTCCTGGG

TCGGAACTTT

TGAACCACTT

ATAGTGACTT

CAACAAAGAT

CGTGGGAGG

AGGCACAGCC

GAAAGACAGG

GCA=TCTG

GGGCTCAAGC

ATGGTTGAG

AA.AATTCACC

CTCAACACG

TTCCTCTCAA

CAGTAGGAGG

'rrCCAGAAGT

CCTGACTCCT

TACAAAC.CCT

TCCAGGGAGG

AGCTrrGGTGT

TGGGCCTGCT

TCATGACTAG

TGAGAGAGAG

AGACTGCCGT TTTCTATATG GGATGACCCT

TCACAGGCCA

GTTTGGCTcT AGACATCAGA AGCCCGCA GA

TCCTCTGAGC

GGCCACAGCT

AAG;AGAATGA

CTCTATGTCT

GGACAGGATG

CTTTGAGAA.G

GGCATTGCAG

TTGGTCAATC

CTGAGTATGA

GAAAAAAGCA

ACAAGACAGA

GjCTAA;,Gorpc

CCCAGCTCCT

GTACTTGGCC

ATCTCTCTCC

TTTAGTTTGT

TGCACTGATG

GTGACATTGG

GTGGAGGAAA

AGTTGTCAGA

CAGAGAGCCC

ATCCCTCT

CAGACAGACA

AJACCCAACTC

GGTGGACATr TCTGCcCCAC

^'GGGGGGCTT

ATGGGTCTTT

GTTGGGTCAC

AGCTTA~CCT

AACCAAGGCT

CGGCACAT~C

GCACACCGGG

CTOGGAAGTT

T1TGGGGTGG

AAATCCGCTT

AGGOTG'CT

CCCACCATCT

CATTATT

CTTAGGATG

TTGCCCTTCC

TGGCGA'TCTA

TGACCAGACA

AAGACCCCTC

CCCTGTCAGC

GTAGGTGGAG

AAGGAAGGTT

11940 12000 1206 0 12120 12180 12240 12300 12360 12420 12480 12540 12600 12660 12720 127 CTCAGOCCCT GACCCGAATG CTTCCAAATT TACGTATrc TGcA.AAAccc

CCTGTATCAT

SUBSTITUTE SHEET (RULE 26) WO 95/33831 IPCT/US95/07349 51

TTTCACTACT

CTCTGCTGTC

CCGCATCCTC

TCATAAGCAG

TTCGATTCCC

AAACCAGTGT

ATCGGCATT

CAGGTTAGAC

F1'CA'I7CCTC CAAAGAAACC TCGGGAGTGT TTTCTCTGA TCATTTCTTC TTGCTGGTGG TGGTGATGGT 7TGCCCCTGC AGAGGGATGA GTGTGTTGGG ATCTCTTIGA GCAGGGCGCC TGCAGCGCC TTATGGAATC CAGGCAGATG TAGCATTTAA CCG-CAGAAGG TTCCAGAAAG TATTATGGGA GGCACCTCCC TAGTAGGGC CTTTGCTGG CCTCGAACTG GCTTTTGAAT CGrCGJATTT T1'cAcATCAC TGCCTAAGAT- GCAkGGA.CTT AAGGTCATCA GGTTTTGACT TGCTTGTCCC AGOCCCTGTC CCCTCACGAG TTGAG3GTTGT TrGTGTGACG

C'IGGAGGGGT

ACAACACACQ TCTATAAAAG TAAGACTACA TGAGAQAGGA GGTAGWATG AGOrTr1TAAGG; kCCCCCCAGC CGTTCTGTGC rGATGTGTGT G;TcTTTCITrT CTCCTCACTG GGCTCTGCTT CTTCACTTCC TTG;TCAATCC AGAGCCAGGC CT7GTAAGA). GCACGAGCTG GTALAGGGGCT GGCTGGGTCT GTCTTGGGTG

GCGGGTGCTG

GCCTCOCTAG

CAGAAATGTG

CCATTCTCTG

GCCGTGTGT

TTTACCCCAT

TTCCTGAACC

TCTGGAGCCA

GGGTCATGTG

CATCTCGAGC

GCAATGTGTC

CAGGGCAACT

TCTTCCCTG

GCCCTCCTGT

CCCAAACTCC

TCGCTCAGTCT

GGAACCQGAC

GTTGAGACTT

CATGCACCTC

TTGAATGTAG

TCCCATTCCC

AGTCAACTGT

TTTGCATGGA

ATCCACCTGC

GTT~CTGGGCC

TGCCCTG;TGG

GGTGGTATTrC

GGATTATGCC

GAGCCTCCCC

AGGGOCCTCT

TGTTTCTCAT

TTGGGCTAAG

GAACTCGA:,t

ATTCCCATCC

ATACCTG.GGG

ACGGGAGGGA

TTCAGGGGTG

GTGAGGCAAA

CC~rAGCTCT

CTTTCTACG

GGCTCAAATA

TACCCTCAGG

CAGACACACT

TCAGGACTGA

GCTGGAAGAT

TA'TGTCAGCT

TGGGCCCTCT

CTCTOCCAGT

GATACAGGGA

CAGGAIACCCA

CTTGGCTOCC

AGCCATCTCC

CGGATCTCCC

GCTCATGTT

AGGCAGGGGA

GGATCGTGAT

TACTGGATTG

TCCCTGGAGA

GAGCTTCTAG

CAGGGCGTAC

TGACCACATC

TCCATGTGCT

AGAGAACACC

TCCGAGACCT

GGCGTGGGCT

TAAGACTCCA

GGCCTCATG.;

AkACACT'ITGG

T'GCTTCTCA.A

CCCTCTGCCC

CAGCTTGGTr

ACTGGCACAT

TGAATCTAGG

TCTCATTCAG

GAGATGCAGC

GGGTATGTC

7TCAGTCGGA

GTCCACACAG

TACCTGCAGC

TAAGCATCAC

AGCAGGCACC

GGGCTGGCAG

CCCACAGGCA

GTATCAAGTG

AATCCGAGAG

ACTCTGAACC

CATGATOCCG

TCTCAC'I'CA

CAGGCGCTTG

GGCTGCCCCC

AGAGGAGTGA

CAGTCACGAG

GATGAACACT

ATGAGOTCAT

GACTCCAGAA

CCAGCTCTGA

TGGGACAGAA

TGAGGAGTAT

12840 12900 12960 23020 13080 13140 13200 13260 13320 13380 13440 13500 13560 13620 13680 13740 13800 13860 13920 13980 14040 14100 14160 14220 14280 14340 14400 SUBSTITUTE SHEET (RULE 26) WO 95/33831 WO 9533831PC'fIUS95/07349 52 ATTGATTATT GGGCAACAT ATCCCTTACT GACCAGTGC, CTCTCTGCA GGTGGGcAAX TGACCACCTA GTGGGTAC GCGTTCTGTC CAGAAGACAC GCTTCCTTc ATTTTATTT CTGGGGTGCA GTGGTGTGAT TACTAAGCTT GGACTATAGG CCATGAGAGG CCACCCATG;T

CTGAGGCT'TT

TG;CTCGTGCTC

ATCGCGCCTG

TCCTACATCA

TGGGGTGTG

CTGGCGGCCTG

CGTTAAA.Ak--

CTTCGACCCT

CTCCTTTGAG

CCCTOCTTCA

ACAGTGATCA

GCCA N'?CAA

ACGTGCCCAG

AOTTGATAAG

TGCTATGTA

CCCTCCCTrG TT1'ACTAATC

ATCTCATCTA

CACCTTCGTC

AGOCTTCTGC

AAGGCTACGC

ACGCCACCAA

TCACCTGGGC

AGTAGATC;TC

AAATCAAAAA

GGAGTTCATT

GATGCTTGTA

TTTTCCAGTA

GAAG--CGCC

GTTAAA1TTC

TCACGGCGAC

AGCTGTTAGG

GCTCCCTGTC

AATGCTTCTLA

T'GCCTCCTTC

TCCCTTTCAT

TTCTGTGCC;

A CCCGGAGCC

;CCGAGGCAT

AGCTGATGA

AGCCATGOA'

TATT=T

CATACGTCAC

CCAAGACTAI

TTLCCTCCCC

CTGACCCTTC

ATG;GTTTCCC

GCGCTACTAC

CC^ACGCCATC

CGGGCAGGCT

AGCCCATTGC

TTGTACTTTA

TATTTCTCCT

GTATTGTGGG

GAGGAAACAG

AGCAGGATAA

ACTCGGGTCA

ACTCACTAGG

cATTITGTCC

ATGAACATCA

GTGACAGAGA

TTTTCTTGTC

TTGATTCTGC

ACACTCTCTT CTCCTCCT2CA TG7YGAGGGGC

GTGCAGACC

GCGGGGCCAC

CATGTCATGA

TGciTGC'TrT

?AATTTTAA

TGCTGGTTAC

GTAAACAGAT

TGGGATGOAG

CCAGGAAGAT

TGTTrATTCCT

TTTG'CTTAG

TCTGAOCCTT

GCTCACTACC

CCTGTCCTroT

TCTTT'GAGGG

AGTGTGCCTT

TCCTGTOT

CAGATCCTGC

CTrrrGGGGG

OGTATA-AAGA

GTAACTAAA,

GGTGCCTAAG

GAGAAATTTC

AGATGAGTGG

TCCATIGTAT

GCTCTGCCAA

AATCCAAGGT

TCCTGCCTAC

AGGACTACTC

OTGPAACTC

CAGGGGTTTTr

GGACTGGATC

CCCTCTG;L;C

CACGCCATCT

TGCCTCCAAG

cccc'nCCGC

GGAGTATAAT

GTTGTATGGG

AGCACTGGGC

ACGAGGGGC

GGACCCATGO

AATGAGAT'rA

CAGCAACCAT

TCAAGGACCT

TGATCATCCA

CCTCCTTrTCA

CTGGAGAAMA

TCTTTcTT'rG SCCAGACCCTA GAGCCAAGGA TGGCACATGG k GCATGGGTGA TCCCATrTATG ACTTATTACC GAG7T'TGT TAAGGTGAAC TGCCAT~r TGCCTCACAC CGGAGGCTCC TTrCCGTCCCc GTCCA??J'TA GGATCAGCCA AGCCCGTGGG TAGAAATGGG GTCTTGCTCT GTCACCCAGG CGCAGCTI'rG AGCCGTC'rTC CCACTCAGTC AGAGTGGTCC 'TTCTTTCCAT rCI7rTTGGCA TGCTGGGCCC TGCTGCTCAC AAGGCATCO-.

GTGGTGGTT'r CTTTCAGCAT GGGGTTGGGA 14460 14520 14580 14640 14700 14760 14820 14880 14940 15000 15060 15120 15180 15240 15300 15360 15420 15480 15540 15600 15660 15720 15780 15840 15900 15960 16020 SUBSTITUTE SHEET (RULE 26) WO 95/33831 PCT/US95/07349 53 T-TC11-r I'rT TAAGTCTTGG T1TTTCCAAAC AAG;CCCTCAT TGGGATTGAA GGTCCTrAGC TCCCTGGCCT GGATGTGCTG TGCTGT'GCCA CCCGGCTGCC AGGGGACACA TCTCTATCCT ACAGGAOTGC CATCGCCCTG TGTGCACCTA CGATCAAAGT GAATTCTCCA GGGATTGTGA GGGCAACTCT CTrCTAGAGA GTCCTGATGA GGAATTTGCT TTAAAATCAT TCA.ACGTGGA GT"TTGAAATT GTCCATCATA AJATGTGTA.A CCCTTGCTCC CCTCCTCAA", TGAAAC1-rCA CTGGAAACAG AAGAGTCCTC CCCAACCTGT GTATCCCCTC GAAGGTGCCA GGCATGTCTC TCTCCAACCC CTGCCTrCATj GGCCCATGGA CTTCCATCAG TATTTCACCA GAGATCTGCA AATGATGCGA TTGT1GTCAT G'TTrAAAAGr, A.ATGCTTCCA GAGGWATGA GCTGATGGCT GCAGCTGGGG AAGG-GTATGG

ATGGTA.GZ

AAAGCATCGCT GGCCTATGTC AGCAGTCACA GCCTGGAGGT GGTAACAGAG TGCCAGTCAC TGATGCTCAA GCCTGGCACC TACAGTTGCT GGAAACCCAG AAGTTTCACG AACACGTGGC AcpATCTGCTA GCGGTCTTCC CTrAGTrTGC TTGCTTATCA GTGGACCTCA CACATCCTCT GTAAGGTGCA AA-GTCAGGGA CACTATTCAG CCTCCTCCTG AATGTCGGAT ATGCTTTGTr CCCCTTGTCT AGTGCTTAG^' ACAGGGAGTG CAGACAGGAT G'ITTCTTTAT CCACTGCCCA TGTDTI'GGTG AAGCCCTGCT GTGCGCCCAC TCCAACGTCA TCCTGSAAGAA CTCCTCCGAG AATTC TTGAAAAzcAA

ACACTGATCT

TTAGTCCCCG

CGAGGCACTc

GAGAAGTOCA

CAATCTACAG

CTGGCCCCTT

GCA.A]ACAGG

CTTGGCTTGG

AGAAACGTGG

TGTCTTTCAG

GCAGCTCAAT

ATACAGAA6AC CAGGACAGTG GXA.TCTCTGG

TGGTTGGCTG

CTATTCCCTA

ATAGCCATTT

TGAGCAAGAT

TGCACAGGGC

CCTTCCCCAC

GATA?.TCCCA

GGAGTGTCAC

AGGCCAGT TA

GTCCACTTCA

GCCATCTCC

ATGGTGGTCC

CCGTCAGCTT

TTGTCTTACC

GAGTCTATGT

GGAGCACTTC

AGTTCCCCAA

TGTATAAkTGT

GAACTGAGTT

CTGCAhGTCAT

GAACGACTCA

TCAACCCGGA

TCCTCTACT

GGGCCTGTGC

CCCTGTCTTG

AGGTTGAGTG

TCGGTCTAr'r

GTCCCTGTCC

TAGTGGCTCC

CAGAGAAI'A

GA.UkACCTCT

GTCCATGT'A

TCATTATGCC

CCGCTTCTC.A

AACGGTGCCC

CGATGACAGC

CTGCCACTAG

16080 16140 16200 16260 16320 16380 16440 16500 16560 16620 16680 16740 16800 16860 16920 16980 17040 17070 17160 17220 17280 17340 17400 17415 INFORMATION FOR SEQ ID NO:2: Wi SEQUENCE CHARACTERISTICS: LENGTH: 2298 base pairs TYPE: nucleic acid STRAliDEDNESS: single SUBSTITUTE SHEET (RULE 26) WO 95/33831 PCTIUS95/07349 54 TOPOLOGY: linear (ii) MOLECULE TYPE: DNA (genamic) (ix) FEATURE: NAME/KEY: miscfeature LOCATION: 1. .2298 OTHER INFORMATION: /note= *MOPl UPSTREAM SEQUENCE" (Xi) SEQUENCE DESCRIPTION: SEQ ID NO:2: TGCATAGGTC ACACATCCCT CCTCTACCCA AGGCTAGCCA GGTGCCCrAT CTCTCCCTTC

TTCGCTG-CCT

TTGCTACCCT

CCAGGTAGCC

CCCTGTGTGT

GGGCCCCTTT

A'-CTCGCAZC

ACTCTGCAC

GC:%AGTTTCT

GA GAGACCTA

CCCTAGGACT

TrACCACCCC

CCATCCCCAC

TAGGAAACGG

GTCCTCCT

TCTTCTGAAC

GGGGTTATTA

GGAGGGGGTG

CATCTGGGGT

CTGGGCCCGG

GTGTGTGTGT

CCTCCGACTG

TCTGTTCCG

GTGGAGITG

GGCACCCATG

GTTTATTCAA

CTGCTTGGCC

TGGGCCAGGG

TTTAGCCCCT

GGTACTTATC

TCAAGAGGGA

TGAAACGCTT

TCACTCACTG

AGGCTCCAAA

GOGAGGAGAG

TTGGGTACCA

GACAGTGAG

GGAACATTCT

?1'GAAGGCT ATCCCTTGGc

ATGTATGTGT

GGCTCTGACG TTCTCAGAGA GAACGWAGG GAAAGACTGC ACCTTACTGA AGGGCCTTAG TGTTTCCAGG GGCCCAAGA3A Accce'_'cGTT cTCCT~ccTC CCA'TGCTTC;C CTGC-Ct-%CTC

CAGGCCACAG

TATCA-AGAAC

TCAGATCACC

ACTCAGTACT

CAGACAGTCA

TCTGTTCCAG

CCCCCTACTC

GCTTGTCGZC

CCATTCTGGG

GAGCAGCAAT

GGAGGCTAGT

ACTGCCTACT

TACCAAAGGA

CTAGTCCCAG

TGGGTTAA.AA

TGCTGGACTT

GTGTTGGGGG

AA--GGCC ACAC

TGTAACGTGG

CACCACACCA

GG'rGGGCA6TC

CATCACCTAA;

GAAGCCTGAA

A.AGGCCCTTC

CACCTTCAGC

TGAAGGCTGC

CCACTGAGAG

CCTTTGAGAC

CCTCAGGCCC

CTCATGTCAG

ATTTCACTrTA

GATACTTGGG

GAGGGGAGGT

AGTGAAGTGT

ACAGCCTTCA

TCACCGGAGG

GGTCCAGGGA

CAAGGCCTGG

A.ATTCCTACC

AGACCAGGCT

CCCAGCCCCT

AAAGCAGGAA

TITGCTCCCA

ACCCAGTATC

AGGAAAATCG

CTGACCWG

GACCCCGCCC

TGTACTCTGCT

AAGGAAAAGC

GTGTGTGTGT

AGAAAGAAC'r

GGATGAGGCA

TCATGTCTCC

GGGGCCTCTC

GCTAAGACCT

AA'GGAGCCCT

TCCCATCTCA

ACTTGCCATT

GCCTGGCTCA

TTT TTCAGAT

TGTCTGGGAC

AGTCGGGAGC

GCTAGGGGTA

CCC CAAGAGA

AGAGCTGCAG

CGAGAAGTAC

GTGTGTGTGA

TTATCTCCAC

120 180 3 00 360 420 480 540 600 663 720 780 840 900 960 1020 1080 1140 1200 1260 SUBSTITUTE SHEET (RULE 26) WO 95133831 PCT/US9s107349 55 ATTATcTCTG GGGAGAMcGT

CGAGGGTT

GCCAGGTCCA

ATGCTTTCCT

AGAGAGCTGG

GGACACCCG

CCCGTCCTGG

TCCCCGAGGA

TTGCAT1GACT

AGAGTGGCCA

AGCACAGCCC

GCAGATTIGG

TGGGCACTCG

AAGGTCCCA GAGGAAGTGG CACCCGACGGG ACAAAACCCA GGATAGCAGA GGGGCAAGCG GGAGCAAATG GAGTGTPGGG GGGGGCGOTT CCTCCGAGGA GCCTTCTCGG ATTCCTGCGC TTAGTTGCTA CACITTTCCCC ACTTCCAAGT ATTCTTCTCT CTGGGTCCCT GCGCCTCTG GTAAATATTT GTAGAGCGCC CTGGGAGGAA G0GAGGGGCA

GTGOGGCTAC

CGAAAGATGA

TCCCTCCTG

GCGAGT CCCG

TCCCAGTGCC

TGAATGAAGC

CATTCGCCCA GGCTITGGGGA. GGGCGGGGAC AGGCGCAGGT GGGAGGCAGC GGGAGCCGGCA GGGGCGGGGA AGTCAGTCCT CCCGCTCCTC CCCCGCTCCC CCGGCGCTCC CGAGGCGGCC CGCGGGCCAT CCGGGC0CGC GCGGGAGATC GGAAAGGGT TTGTTGCTGC TGCCCGCGGG GAGGAGGGAG CTAGGGTTCG CTCAGCGCCC AGCTCCTCT TGTAGCTCTG CAAGCTGCTG CTCCTCCCAC CCCGGCCCC TCTCTGGAGT TGCTGTGCTA GCCTTGCCCT GCGTCCTG1-C CGGGCCAGA-A CTGAGTAAAG GACAGGGOCG TCCCGGGCAA GGCCATGTGT GGCGAGGCCG CCTrGAAGCT CGCCTGCAGC CCGCTGCCCT GCCCCCTCCG CTGCCACCTG GGGCGGCGCG GCGTAGAGCC GGCGCGATG INFORMATION FOR SEQ ID NO:3: SEQUENCE CHARACTERISTICS: LENGTH: 2997 base pairs TYPE: nucleic acid STRANDEDNESS: single TOPOLOGY: linear (ii) MOLECULE TYPE: DNA (geriomic)

CGGCCCCAGC

AGGGCCCTTG

CCTGAGCGCG

CCGGCACTCG

CTCCTCGCTC

GACTGCGGGC

AGCGCAGCCG

AAkGTGACCTC

GGCCCGGTGC

GCGCCCk-ACT

TATTGGGCAC

ATCAGAGCG

CTCTCCGGAC

TCTTGCTCGC

CGAGGGGCCC

GCCGGGGAG:T

GGGTCGTGGA

CCCGGATCGC

1320 1380 1440 1500 1560 1620 1680 1740 1800 1860 1920 1980 2040 2100 2160 2220 2280 2299 (ix) FEATURE: NAME/KEY: misc-teature LOCATION: l. .2997 OTHER INFORMATION: /note= MOPl TERMINAL SEQUENCE' SUBSTITUTE SHEET (RULE 26) WO 95/33831 IPCT/US9S/07349 56- (xi) SEQUENCE DESCRIPTION: SEQ ID NO:3: TACCTCTTCC TGAGACCCT0 ACCTTTGCGG GGCCACACCT TTCCAAATCT

TCGATGTCTC

ACCATCTAAG TCTCTCACTG CCCACCTTGO CGAGGAGCCA ACAGACCAAC CTCTCC~rAG CCTrCCCCTC ACCTCCCCAA CCGGAAGCAT CTAAGGOGwrC CAGAAACCTG;

ACGTGCAG

CAGCTGATGA GCGCCCTTTC CTTCTGGCAC GTGACQGACA AGATCCTACC

AGCTACCACA

GCAAACGCCT MAGAGCAGGA AAAATGTCTG CCAGGAAAOT CTCCATCC

CACATGGCC

CTGCCCCTCT GAGTCTTTGA GGAGTAATCG CAAGCCTCGT TCAGCTGCAG

CAGAAGGVAA

GGCTTAGCCA CCGTGOGCGC TGGCGTcTGT GTGA.AGc;JA AACCAAGCAG

AAGCCACTCT

AATGATACT CACAATAAA CCCATGAATG AATGGTTA GGATACAGAT

ATATTTTCCT

AAACAATTTA TCCCCGTTTC TTGGTTATT4 CTGACTTTGT '%Au'CAGAAAA

GCCGGGGCTG

TGGAGGATGG AGAGGCCCCT CCTTTCCGTC TCGTCTCGT GTGTGTGTTT

ACCAGACCTG

CCCAXATCCA

GCCTOTAGGG

ATCTGrCCCTC

AAAGGGTGTT

CACACACACA

CACACACACA

TGCACACACA

CACACACACA

CATGCATGCA

CACACACACG

CTGCCAGTCC

CTCAGCCCCA

CTAACAAGCA CAGCGGACCC TCTCCTCCAA ACAAGGCCCC CCTTCACAGC

TGCCTCTCTT

TCTGGATCTG AG0GAGATG TCCrGCTTCA

GAGGTGCGAT

CAGAGCCCCA

GCTGCCCCAA

AGTGTTTCCT

GCATCCACAC

CATCTGGTCA

GGTGGGGAAC

ITCTCTTCTG

TTTTAGTITTT

TTCGATc2'Gc GGGAAGGCCA AGGAGGAGGA GGATG-TCTGC TCAG;,.AGOG

CCAGTGAOGGG

GGGATGA2AGA CATGCATGAnT

CACACACACA,

CACACACACA

ATTCCTGccc

TACCTGAGGA

TCTGGCACCT

CACTCTCMAC

CAGAACAGGG

GTTGOTTAT

TGGTTCCTAC

AAAGAATGAG.

CAATTCTTCA

TCTTCTTCAG

TTTCTTTTTG

TGGAGGGAGG

ACACACACAC

CACACACGCA

TCTGAACCGC

CATGGTAGGA

AGCACAGGGG

CTGTGGCCGA

CCTAACAGAA

TGTACT(3GC

GCTCAMACAA

CTTCAAATGC

GTITAGCCAGG

TGTCTGCTGTC

TAGCrTTGGGC TA.NTTTTrc

TATGCATGCA

ACACACACAC

CGCACGCACG

ATGTAGACTT

AAZTCCATGAG

ATCCAGGCTC

GCTCCGGAGC

GGTTCTGCGA

TTAGAAGGTT

GGCCTCTCTG

AGAGGGTTAA

CAGGACCTAT

CCTGCAACA

TGCAGCTTCT

TGTGTGTTrG

CACACACACA

ACACACACCA

CACACGCACG

TGG-AATGGCT

A.AAk~GC.:AAG T~cAkGGACAC

CAGGTCCTGG

CAGATTGT

CAACCATGCT

CCTGAGTTTG

ACTGGCTGCC

GGCCATGTCG

CTGGGCTCTC

ACTCTGCCCA

CAGATCTGGG

120 180 240 300 360 420 480 540 600 660 720 '78 0 840 900 960 1020 1080 1140 1200 1260 1320 1380 1440 1500 1560 SUBSTITUTE SHEET (RULE 26) WO 95/33831 IPCT/us9SI/y739 57 GCT".'rTTIC,:

TCGGTGTCT

TTTCCATCT

AGTCTG=rT

TGTCCAATAJ

TTTVIGCAATA

TCCCCCTGAA

ACTGTTAACG

GTGCAGCTGT

GGTAAGGCTG

CTTCAAAGAG

TCATCCCAJIT

G TGACTCCCCT C 'ITATACTT

SAAGCTCTTC

kAGTQ;GTCCTT

AACGAGACAT

CTCCTGGACA

GGATGTTAT

GTGGGGCTCC

C

GATGGCAAAG

A

GCAGGGGTAA

AMAATAGAGG

C.

GT GGTGCACA TTTTACTTTA GAGCCCTACT

CTCCMCAG

AAATGTG TAJ. ATAGTTCTGA CAAGACAAAC

AAATTATTTA

CAAAGGCTCC TCACAGAGMA CAATGAGGCC GACTrcCTCC TAAGACTAIT TATTAACAGT TOGACCGATG

TACCCATAGC

AGTGAAAATT CTGTATAAAT AGAGTAAGMA cGGTTTGAC TTGGT'rCTGG TTGTCCGACC CATGTGTCTA

TTTGTGTCTT

CTGGAGTCTC ATCGGCTGAG AACCCTCGAC

CTTGATCTCG

'ATCCAGGCC CAGGGG.AGT CGGGCGCTCC

TCAATATTT'G

TGGCGGOA CAGACGAC CAAACAACA)A ATGTGAGTrr *GTGCCTTTG ATTGAACTAC AGCCCAGCTG

TCAGCAGCTG

ATTAGCTGT GTTTACTGCT AACATAGTCG

AAAGATTTAG

ACAAGAGAG AAGAGGGGGG GGTGTATACC

CCAAACTTGA

AAGCCATGCT GGCCTCACAG CTGGCGTCAT TCAGTGCCCG TCACACCCGG GCAGTrGGGG 1620 1680 1740 1800 1860 1920 1980 2040 2100 2160 2220 2280 2340 2400 246C 2520 2580 2640 2700 2760 2820 2880 2940 2997 GCTGCCCTCG CAGGCCAAGC TCTGGAGGTG OGCAGCCCAC

CGCAGGC'PCG

GC2CCCCACC

TGCCCACG.

GCTCTCTCTT

CCTGCGAT

CAGGCTGAA.G

?I'AGCCTCTC

ACTAATcTGT

ACCTGGTTCC

TCCCCGGCAA

GGTCACCTGA

CCCCTGI'IGA

CTAAACCTTT

CCCAGACcc.

AACCCCACCC

TGCCAATATG

TCCCTGTGTG

GCTCAGCG-CA

CGGATGTTTC

CTCAGAmiccCA

CCTGTCACTG

CAAGCCGGAG

CCACCCCCAA

TTTGCAA.A

CTGCTCCTA

GTOCTCATCT

TAGAATCCc.A

GCAACCCAGC

TCCCGACA.c

GGTCCAGATG

CCCCAGTAT

TAAGGAGTTT

C'TCAACAGAG

GGCTACATCG

G0CGATGCTT

CGTCCTA.ACA

TCACCTTI'TG

TGGCCTCTCA

GTTTACACAT

GGGCTTCTCT

GTGCCAGGGC

AGAAGGGAGT

GTCTTTGAAG

GGGACAGGCT

CATTCCAGCC

TTCTGTTTTC

CATGTCTGCC

CTTAAAAAJAC

TGAGCGGGCC

CGTTGTCACA

GACATCTTCA

AATGGAA

CATACACACA CCCCCGCCAT

GGCCTCATCC

AAATGGCTGA CGGATOTCTA

CTTGTGCCCA

INFORMATION FOR SEQ ID NO:4: ACAA.ACGGTC

GAGGTCAGCT

CGACCCAAAjA GGAATAGGAJ4 Wi SEQUENCE

CHARACTERISTICS:

LENGTH: 9 base pairs TYPE: nucleic acid STRANDEDWESS: single SUBSTITUTE SHEET (RULE 26) WO 95/33831 PCT/US9S/07349 -58 TOPOLOGY: 1linear (ii) MOLECULE TYPE: cDNA (ix) FEATURE: NAME/KEY: misc_feature LOCATION: 2. .9 OTHER INFORMATION: /note= 'WTI/EGR CONSENSUS SEQUENCE' (xi) SEQUENCE DESCRIPTION: SEQ ID NO:4: GNCN=GNG 9 INFORMATION FOR SEQ ID (14 SEQUENCE CHARACTERISTICS: LENGTH: 21 base pairs TYPE: nucleic acid STRANDEDNESS: single TOPOLOGY: linear (ii) MOLECULE TYPE: DNA (genoniic) (ix) FEATURE: 'a OV NAME/KEY: nuisc-feature a b a(B) LOCATION: 1. .21 00*4 OTHER INFORMATION: /note= *WTl/EGR HUMAN TCC BINDING SITE

M

(xi) SEQUENCE DESCRIPTION: SEQ ID T**TCCTCCTCCT CCTCCTCCTC C 21 INFORMATION FOR SEQ ID NO:6: 04 Wi SEQUENCE CHARACTERISTICS: TM *T LENGTH: 15 base pairs TYPE: nucleic acid STRANDEDNESS: single TOPOLOGY: linear (ii) MOLECULE TYPE: cDNA (ix) FEATURE: NAME/KEY: Inisc.feature LOCATION: 1. OTHER INFORXhTION: /note= "WTl/EGR MOUSE TCC BINDING SITE" (Xi) SEQUENCE DESCRIPTION: SEQ ID NO:6: SUBSTITUTE SHEET (RULE 26) WO 95/33831 PCr/US95/07349 59 Wi SEQUENCE CHARACTERISTICS: LENGTH: 9 base pairs TYPE:,nucleic acid STRANDEDNESS: single TOPOLOGY: linear (ii) MOLECULE TYPE: DNA (genoinic) (ix) FEATURE: NAME/KEY: xnisc-.feature LOCATION: 1. .9 OTHER INFORMATION: /note= "HUMAN FTZ BINDING SITE- (xi) SEQUENCE DESCRIPTION: SEQ ID N0:7; TcAAGGTCA I SUBSTITUTE SHEET (RULE 286)

Claims (37)

1. An isolated nucleic acid comprising a reporter gene in operative association with a single nucleic acid fragment of an OP-1 specific upstream non-coding sequence, wherein said nucleic acid fragment consists of nucleotides 3170 to 3317, 3020 to 3317, 2790 to 3317, 2548 to 3317, 2300 to 3317, 1300 to 3317, 2548 to 2790, 1549 to 2790, or I to 2790 of SEQ ID NO: 1, wherein said isolated nucleic acid comprises not more than one nucleic acid fragment of said OP-1 upstream sequence, and, wherein said nucleic acid fragment is operative to regulate expression of said reporter gene.

2. The nucleic acid of claim 1, wherein said nucleic acid fragment consists of nucleotides 3170 to 3317, 3020 to 3317, 2790 to 3317, or 25 4 8 to 3317 ofSEQ ID NO:1. 99*9

3. The nucleic acid of claim 1, wherein said nucleic acid fragment consists of nucleotides ""2300 to 3317, 1300 to 3317, 2548 to 2790, 1549 to 2790, or 1 to 2790 ofSEQ ID NO:1. 9 9

4. The nucleic acid of claim 1, wherein said nucleic acid fragment comprises at least one Wt-1/Egr consensus binding element.

5. The nucleic acid of claim 1, wherein said nucleic acid fragment comprises between one and six Wt-l/Egr binding elements. 9 0 6. The nucleic acid of claim 1, wherein said nucleic acid fragment comprises at least part of an Fushi-tarazu protein binding element

7. The nucleic acid of claim 1, wherein said nucleic acid fragment comprises a steroid responsive element.

8. A cell transfected with the nucleic acid of any of claims 1-6.

9. The transfected cell of claim 8, wherein at least part of said nucleic acid is operatively integrated into the cellular genore. The transfected cell of claim 9, wherein the genome of said cell has an OP-1 gene locus and at least part of said transfected nucleic acid is operatively integrated into said genome at said OP-1 locus. 61 a. a

11. The transfected cell of claim 8, wherein said cell expresses endogenous OP-i.

12. The transfected cell of claim 11, wherein said call is an epithelial cell.

13. The -ransfected cell of claim 11, wherein said call is of urogenital, liver, bone, cardiac, lung, or narve cell origin.

14. A cell transfected. with an isolated nucleic acid, said nucleic acid comprising a reporter gene in operative associationl with a first DNA sequence, wherein said farst DNA sequence is: a single nucleic acid fragment of an OP-i specific upstream non-coding sequence, wherein said nucleic acid fragment consists of nucleotides, 2548 to 3317 or 2548 to 2790 of SEQ ID NO:l1; or a nucleic, acid fragment of an OP- I specific upstreamn non-coding sequence, wherein said nucleic acid fragment consists of niucleotides 1549 to 2297, or 1549 to 1788 of SEQ ID NO:2; or a variant of a nucleic acid fragment of which hybridizes with a nucleic acid complementary to the nucleic acid fragment of under conditions of hybridization in 40% fommamide, 5 x SSPE, 5 x Denhardt's solution, and 0.1% SDS at 37 0 C, followed by washing in 0.1 x SSPE, and 0.1% SDS at 50*C; and a second DNA sequence comprising a sequence which interacts with a DNA binding molecule and affects expession of said reporter gene, wherein said isolated nucleic acid comprises not more than one nucleic acid fragment of The cell of claim 14, wherein said second DNA sequence comprises at least one Wt-l/Egr-I consensus element SEQ ED NO:4

16. The cell of claim 15, wherein said second DNA sequenc comprises between one and six wt-i/Egr-1 consensus elements SEQ ED NO:4.

17. The cell of claim 15, wherein said second DNA sequence comprises at least six Wt-1/Egr-l consensus elements SEQ IID NO:4 62

18. The cell of claim 14, wherein said second DNA sequece is selected from the group of sequences consisting of a TCC element, a Fushi-tarazu protein binding element and a steroid responsive element.

19. The cell of claim 14, fRulher comprising a third DNA sequenceim operative association with said reporter gene, said third DNA sequence being independently selected from the group of sequences consisting of a TCC element a Fushi-tarazu protein binding element and a steroid responsive element A method for screeniag a candidate compound for the ability to modulate expression of OP-i1 said method comprising the steps of: incubating a said candidate compound with a cell transfected with an isolated nucleic acid of claim 1; measuring the level of said reporter gene expressed in said cell and comparing said level with that ofsaid reporter gene expressed in said cell in the absence of said candidate compound, wherein an increase in reporter gene expression level is indicative of said candidate's ability to increase OP-I1 expression in ivo, and a decrease in reporter gene expression level is indicative of the candidate's ability to inhibit, OP-I expression Mn vivo. *21, The method of claim 20, wherein said reporter gene is in operative association with a single nuc-leic, acid fragmnrt consisting of nucleotides 3170 to 3317, 3020 to 3317, 2790 to 3317, or 2548 to 3317 of SEQ ID NO: 1.

22. The method of claim 20, wherein said reporter gene is in operative association with a singe nucleic acid fr-agment consisting of nucloddes 2300 to 3317, 1300 to 3317, 2548 to 2790, 1549 to 2790, or 1 to 2790 of SEQ ED NO:l1. -63

23. A method for screeuning a candidate compound for the ability to modulate expression of OP-I, said method comprising the steps of: incubating a said candidate compound with a cell according to any one of claim 14, 15, 18, or 19; measuri the level of reporwe gene expressed in said cail; and comparing Wad level with that of said reporter gene expressed in said cell in the absence of said candidate compound, wherein an increase in reporter gene expression level is indicative of said candidate's ability to increase OP- I expression in vivo, and a decrease in reporter gene expresion level is indicative of the candidate's ability to inhibit OP-i expression in vivo.

24. Use of a compound identified by the method of claim 20 for modulating OP-I expression. An isolated nucleic acid having anucleotide sequence cmrn mcleotides I to 1871 of SEQ ID NO:2.

26. An isolated nucleic acid having a nucleotide sequence comprising nuzclootidesl to 3317 of SEQ ID NO:lI

27. Tho method of claim 20, wherein said isolated nucleic acid further comprises part or all of a micleotide sequence encoding an OP-i pro protein in operative association with said reporter gene.

28. A method for produciing a candidate compound having the ability to modulate OP-i expression in a cell, the method comprising the step of: obtafiniuS, by the method of claim 20, a candidate compound, and producing either said candidate compound, or a derivative thereof having substantially the same OP-i expression modulating ability as said candidate.

29. The method of claim 28, wherein said candidate compound, or derivative thereot produced in stop is by recombinant DNA techniques, or by nonbiological peptide synthesis- 64 A kcit for identifying a candidate molecule capable of modulating OP-I expression in a cell, the it comprising: a receptacle containing an isolated nucleic acid Of claim 1; and means for detecting expression of sad reporter gene following exposure of a said candidate molecule to a cell containing said nucleic, acid.

31. The it of claim 30, wherein said reporter gene comprises an OP-i DNA sequence.

32. Use of a compound identified by the method of claim 23 for modulaing OP-i expression. 33 **ehdo ca.2,ween.adcl sa eihla el

33. The method of claim 27, wherein said cell is an epithelial cell.

34. The method of claim 20, wherein said cell is of epithelial, ce. ne adic uno nev .e orgn The method of claim 27, wherein said cell is of -urogenital, liver, bone, cardiac, lung, or *nerve cell origin.

36. The mtho of claim 20, wherein said ell g is f roet iver bsoion car a sigleo

37. The it of claim 30, whereint said reporter gene is in operative association wt a single cec uccacid fragment consisting of nucleotides 170 to 3317, 020 to 3317,8t 2790, to4 to 2790, or I to 2790 of SEQED NOAl. 65

39. An isolated nucleic acid comprising a reporter gene in operative association with: a nucleic acid fragment of an OP-1 specific upstream non-coding sequence, wherein said nucleic acid fragment consists of nucleotides 2151 to 2297,2001 to 2297, 1788 to 2297, 1549 to 2297, 800 to 2297, 1 to 2297, 1549 to 1788, 800 to 1788, or 1 to 1788 ofSEQ IDNO:2; or a variant of a nucleic acid fragment of which hybridizes with a nucleic acid complementary to the nucleic acid fragment of under conditions of hybridization in 40%6 formamide, 5 x SSPE, 5 x Denhardt's solution, and 0.1% SDS at 37°C, followed by washing in 0.1 x SSPB, and 0.1% SDS at :.....wherein the nucleic acid fragment of(a) or is operative to regulate expression "of said reporter gene.

40. The nucleic acid of claim 39, wherein said reporter gene is in operative association with: a nucleic acid fragment consisting of nucleotides 2151 to 2297,2001 to 2297, 1788 to 2297, or 1549 to 2297 ofSEQ ID NO0:2; or a variant of a nucleic acid fragment of(a) which hybridizes with a nucleic acid complementary to the nucleic acid fragment of under conditions of hybridization in 40% formamide, 5 x SSPE, 5 x Denbardt's solution, and 0.1% SDS at 37°C, followed by washing in 0.1 x SSPE, and 0.1% SDS at 9 41. The nucleic acid of claim 39, wherein said reporter gene is in operative association with: a nucleic acid fragment consisting of nucleotides 800 to 2297, 1 to 2297, 1549 to 1788, 800 to 1788, or 1 to 1788 ofSEQ ID NO:2; or a variant of a nucldic acid fragment of which hybridizes with a nucleic acid complementary to the nucleic acid fragment of under conditions of hybridization in 40% formnamide, 5 x SSPE, 5 x Denhardt's solution, and 0.1% SDS at 37°C, followed by washing in 0.1 x SSPE, and 0.1% SDS at

42. The nucleic acid of any one of claim 1, 2,3,39,40, or 41 further comprising part or all of a nuclcotide sequence encoding an OP-I pro protein in operative association with said reporter gene. 66 E S 5 S. S 95 S S S S *SSS .9 S. 9 S .55.

43. A vector comising the nucleic acid sequence of any one of claim 1, 23, 39, 40, or 41.

44. A it for identifying a candidate molecule capable of modulating OP- I expression in a cell, the it comprising: a receptacle containing an isolated nucleic acid of claim 39; and means for detecting expression of said reporter gene followi]ng exposure of a said candidate molecule to a cell contaixning said nucleic acid. The it of claim 44, wherein said reporter gene comprises an OP- I DNA sequence.

46. The it of clairn 44, wherein said reporter gene is in operative association with: a nucleic, acid fragment consisting of nucleotides 2151 to 2297, 2001 to 2297, 1788 to 2297, or 1549 to 2297 of SEQ ID NQ:,2; or a variant of a nucleic acid fragment of which hybridizes with a nucleic; acid complementary to the nucleic acid fament of under conditions of hybridization in 400/ formamnide. 5 x SSPE, 5 x Denhardt's solution, and 0.1 SDS at 37 0 C, Molowed by Washing in 0. 1 x SSPE, and 0. 1% SDS at 501C.

47. The it of claim 44, wherein said reporter gene is in operative association with: a nucleic acid fragment consisting of nucleotides 800 to 2297, I to 2297, 1549 to 1788, 800 to 1788, on to 1788 ofSBQlID NO:2; or a variant of a nucleic acid ftrament of which hybridizes with a nucleic acid complementary to the nucleic acid fraginent of under conditions of hybridization in 40% fornmamide, 5 x SSPE 5 x Denhardt' s solution, and 0.1 SDS at 3711C, followed by washing in 0.1 x SSPB, and 0.1% SDS at 50 0 C. 67

48- A method for screening a candidate coujpotnd for the ability to modulate expression of OP-i1, said method comprising the steps Of: incubating a said candidate compound with a cell transfected with an isolated nucleic acid of claim 39; measuring thie level of said reporter gene expressed in said cell; and comparing said level with that of said reporter gene expressad in said cell in fth absence of said candidate compound, wherein an increase in reporter gene expression level is indicative of said candidate's ability to increase OP- I expression in vMw, and a decrease in reporter gene expression level is indicative of the candidate's ability to inhibit ON- Iexpression in vivo. DATED this 24thdaY of June, 1999. Creative BiomnoleculeS, Inc. DAVIES COLLISON CAVE patent Attorneys for the Applicant