терипаратид [Russian] [INN]
تيريباراتيد [Arabic] [INN]
- PTH 1-34
- LY 333334 / LY-333334 / LY333334 / ZT-034
Ser Val Ser Glu Ile Gln Leu Met His Asn Leu Gly Lys His Leu Asn
Ser Met Glu Arg Val Glu Trp Leu Arg Lys Lys Leu Gln Asp Val His
- (1-34)-Human parathormone
- (1-34)-Human parathyroid hormone
- 1-34-Human PTH
- 1-34-Parathormone (human)
- 11: PN: WO0039278 SEQID: 17 unclaimed protein
- 14: PN: WO0181415 SEQID: 16 claimed protein
- 15: PN: WO0123521 SEQID: 19 claimed protein
- 1: PN: EP2905289 SEQID: 1 claimed protein
- 1: PN: WO0198348 SEQID: 13 claimed protein
- 1: PN: WO2011071480 SEQID: 14 claimed protein
- 225: PN: US20090175821 SEQID: 272 claimed protein
- 22: PN: US6110892 SEQID: 22 unclaimed protein
- 2: PN: US20100261199 SEQID: 4 claimed protein
- 31: PN: US20070099831 PAGE: 7 claimed protein
- 32: PN: WO2008068487 SEQID: 32 claimed protein
- 5: PN: WO2008033473 SEQID: 4 claimed protein
- 692: PN: WO2004005342 PAGE: 46 claimed protein
- 69: PN: US20050009742 PAGE: 20 claimed sequence
- 7: PN: WO0031137 SEQID: 8 unclaimed protein
- 7: PN: WO0040611 PAGE: 1 claimed protein
- 93: PN: WO0069900 SEQID: 272 unclaimed protein
- Human PTH(1-34)
- Human parathormone(1-34)
- Human parathyroid hormone-(1-34)
- LY 333334
- Parathormone (human)
- ZT 034
Teriparatide is a form of parathyroid hormone consisting of the first (N-terminus) 34 amino acids, which is the bioactive portion of the hormone. It is an effective anabolic (promoting bone formation) agent used in the treatment of some forms of osteoporosis. It is also occasionally used off-label to speed fracture healing. Teriparatide is identical to a portion of human parathyroid hormone (PTH) and intermittent use activates osteoblasts more than osteoclasts, which leads to an overall increase in bone.
Recombinant teriparatide is sold by Eli Lilly and Company under the brand name Forteo/Forsteo. A synthetic teriparatide from Teva Generics has been authorised for marketing in European territories. Biosimilar product from Gedeon Richter plc has been authorised in Europe. On October 4, 2019 the US FDA approved a recombinant teriparatide product, PF708, from Pfenex Inc. PF708 is the first FDA approved proposed therapeutic equivalent candidate to Forteo.
Teriparatide (recombinant human parathyroid hormone) is a potent anabolic agent used in the treatment of osteoporosis. It is manufactured and marketed by Eli Lilly and Company.
Teriparatide is a recombinant form of parathyroid hormone. It is an effective anabolic (i.e., bone growing) agent used in the treatment of some forms of osteoporosis. It is also occasionally used off-label to speed fracture healing. Teriparatide is identical to a portion of human parathyroid hormone (PTH) and intermittent use activates osteoblasts more than osteoclasts, which leads to an overall increase in bone. Teriparatide is sold by Eli Lilly and Company under the brand name Forteo.
For the treatment of osteoporosis in men and postmenopausal women who are at high risk for having a fracture. Also used to increase bone mass in men with primary or hypogonadal osteoporosis who are at high risk for fracture.
Clinical trials indicate that teriparatide increases predominantly trabecular bone in the lumbar spine and femoral neck; it has less significant effects at cortical sites. The combination of teriparatide with antiresorptive agents is not more effective than teriparatide monotherapy. The most common adverse effects associated with teriparatide include injection-site pain, nausea, headaches, leg cramps, and dizziness. After a maximum of two years of teriparatide therapy, the drug should be discontinued and antiresorptive therapy begun to maintain bone mineral density.
Mechanism of action
Teriparatide is the portion of human parathyroid hormone (PTH), amino acid sequence 1 through 34 of the complete molecule which contains amino acid sequence 1 to 84. Endogenous PTH is the primary regulator of calcium and phosphate metabolism in bone and kidney. Daily injections of teriparatide stimulates new bone formation leading to increased bone mineral density.
Teriparatide has been FDA-approved since 2002. It is effective in growing bone (e.g., 8% increase in bone density in the spine after one year) and reducing the risk of fragility fractures. When studied, teriparatide only showed bone mineral density (BMD) improvement during the first 18 months of use. Teriparatide should only be used for a period of 2 years maximum. After 2 years, another agent such a bisphosphonate or denosumab should be used in cases of osteoporosis. 
Teriparatide cuts the risk of hip fracture by more than half but does not reduce the risk of arm or wrist fracture.
Teriparatide can be used off-label to speed fracture repair and treat fracture nonunions. It has been reported to have been successfully used to heal fracture nonunions. Generally, due to HIPAA regulations, it is not publicized when American athletes receive this treatment to improve fracture recovery. But an Italian football player, Francesco Totti, was given teriparatide after a tibia/fibula fracture, and he unexpectedly recovered in time for the 2006 World Cup. It has been reported that Mark Mulder used it to recover from a hip fracture Oakland A’s for the 2003 MLB playoffs and Terrell Owens to recover from an ankle fracture before the 2005 Super Bowl.
Teriparatide is administered by injection once a day in the thigh or abdomen.
Teriparatide should not be prescribed for people who are at increased risks for osteosarcoma. This includes those with Paget’s Diseaseof bone or unexplained elevations of serum alkaline phosphate, open epiphysis, or prior radiation therapy involving the skeleton. In the animal studies and in one human case report, it was found to potentially be associated with developing osteosarcoma in test subjects after over 2 years of use. 
Patients should not start teriparatide until any vitamin D deficiency is corrected. 
Adverse effects of teriparatide include headache, nausea, dizziness, and limb pain. Teriparatide has a theoretical risk of osteosarcoma, which was found in rat studies but not confirmed in humans. This may be because unlike humans, rat bones grow for their entire life. The tumors found in the rat studies were located on the end of the bones which grew after the injections began.After nine years on the market, there were only two cases of osteosarcoma reported. This risk was considered by the FDA as “extremely rare” (1 in 100,000 people) and is only slightly more than the incidence in the population over 60 years old (0.4 in 100,000).
Mechanism of action
Teriparatide is a portion of human parathyroid hormone (PTH), amino acid sequence 1 through 34, of the complete molecule (containing 84 amino acids). Endogenous PTH is the primary regulator of calcium and phosphate metabolism in bone and kidney. PTH increases serum calcium, partially accomplishing this by increasing bone resorption. Thus, chronically elevated PTH will deplete bone stores. However, intermittent exposure to PTH will activate osteoblasts more than osteoclasts. Thus, once-daily injections of teriparatide have a net effect of stimulating new bone formation leading to increased bone mineral density.
Teriparatide is the first FDA approved agent for the treatment of osteoporosis that stimulates new bone formation.
Teriparatide was approved by the Food and Drug Administration (FDA) on 26 November 2002, for the treatment of osteoporosis in men and postmenopausal women who are at high risk for having a fracture. The drug is also approved to increase bone mass in men with primary or hypogonadal osteoporosis who are at high risk for fracture.
Combined teriparatide and denosumab
Combined teriparatide and denosumab increased BMD more than either agent alone and more than has been reported with approved therapies. Combination treatment might, therefore, be useful to treat patients at high risk of fracture by increasing BMD. However, there is no evidence of fracture rate reduction in patients taking a teriparatide and denosumab combination. Moreover, the combination therapy group showed a significant decrease in their bone formation marker, indicating that denosumab, an antiresorptive agent, might actually counteract the effect of teriparatide, a bone formation anabolic agent, in bone formation. 
Process for preparing teriparatide as parathyroid hormone receptor agonist, useful for treating osteoporosis in menopausal women. Appears to be the first filing from the assignee and the inventors on this compound, however, this invention was previously seen as a Chinese national filing published in 12/2013. Daiichi Sankyo , through its subsidiary Asubio Pharma , was developing SUN-E-3001 , a nasally administered recombinant human parathyroid hormone, for the treatment of osteoporosis.
Teriparatide is a 1-34 fragment of human parathyroid hormone, which has the same biological activity as human parathyroid hormone. Hypogonadous osteoporosis and osteoporosis in menopausal women have great market prospects.
Patent US6590081 uses a method of genetic recombination to obtain teriparatide. However, the genetic recombination method has problems such as complicated process, high cost and serious waste.
Patent CN201510005427 uses Wang resin or 2-Cl-CTC resin to synthesize teriparatide one by one from the C-terminus to the N-terminus, which belongs to the conventional solid-phase synthesis method. However, the reaction is incomplete when the method is coupled to the late stage, which makes purification of the final product difficult and the purity is not high.
Patent CN201310403743 is synthesized by one-by-one coupling method. Unlike patent CN201510005427, this patent ester-condenses the free hydroxyl of Ser at the 17-position with the carboxyl group of Asn at the 16-position, and then obtains teriparatide through O → N acyl transfer. Although this method can reduce the difficulty of coupling at subsequent sites by changing the spatial configuration of the target peptide, it still has the problem of many solid-phase coupling steps and difficult purification.
In patent CN201410262511, a pseudoproline dipeptide Fmoc-Asn (Trt) -Ser (ψ Me, Me Pro) -OH is used instead of the two amino acids at the original 16-17 positions for coupling one by one, and the final cleavage yields teriparatide. This method adopts the method of feeding pseudoproline dipeptide to avoid the generation of oxidative impurities, but it cannot avoid a variety of missing peptides due to the excessively long peptide chain. At the same time, the pseudoproline dipeptide is expensive and difficult to obtain.
Patent CN201511024053 uses multiple di- or tripeptide fragments to replace a single amino acid for coupling, and finally cleavages to obtain teriparatide. This method requires liquid phase synthesis to obtain 11 short peptide fragments, which are complicated in operation and low in production efficiency.
A method for preparing teriparatide includes:
Step 1: Coupling 3-Fmoc-4-diaminobenzoic acid with a solid phase carrier, and then sequentially coupling Fmoc-Asn (Trt) -OH, Fmoc-Leu-OH, Fmoc from the C-terminus to the N-terminus according to the peptide sequence -His (Trt) -OH, Fmoc-Lys (Boc) -OH, Fmoc-Gly-OH, Fmoc-Leu-OH, Fmoc-Asn (Trt) -OH, Fmoc-His (Trt) -OH, Fmoc-Met -OH, Fmoc-Leu-OH, Fmoc-Gln (Trt) -OH, Fmoc-Ile-OH, Fmoc-Glu (OtBu) -OH, Fmoc-Ser (tBu) -OH, Fmoc-Val-OH, and PG- Ser (tBu) -OH, then benzimidazolone is closed by phenyl p-nitrochloroformate, and finally fragmented by salicylaldehyde and TFA to obtain fragment APG-Ser-Val-Ser-Glu-Ile-Gln-Leu- Met-His-Asn-Leu-Gly-Lys-His-Leu-Asn-SAL;
Step 2: Coupling Fmoc-Phe-OH with a solid support, and then coupling Fmoc-Asn (Trt) -OH, Fmoc-His (Trt) -OH, Fmoc-Val in sequence from the C-terminus to the N-terminus according to the peptide sequence. -OH, Fmoc-Asp (tBu) -OH, Fmoc-Gln (Trt) -OH, Fmoc-Leu-OH, Fmoc-Lys (Boc) -OH, Fmoc-Lys (Boc) -OH, Fmoc-Arg (Pbf ) -OH, Fmoc-Leu-OH, Fmoc-Trp (Boc) -OH, Fmoc-Glu (OtBu) -OH, Fmoc-Val-OH, Fmoc-Arg (Pbf) -OH, Fmoc-Glu (OtBu)- OH, Fmoc-Met-OH and Fmoc-Ser (tBu) -OH, TFA cleavage to obtain fragment B Ser-Met-Glu-Arg-Val-Glu-Trp-Leu-Arg-Lys-Lys-Leu-Gln-Asp- Val-His-Asn-Phe-OH;
Step 3: Coupling Fragment A and Fragment B, and then removing the protecting group of Ser at Fragment A to obtain a crude teriparatide peptide;
Step 4: Purifying the teriparatide crude peptide to obtain teriparatide;
Step 1 and Step 2 are not in order.
Preferably, the solid phase carrier in step 1 is Rink Amide Resin or 2-Cl-CTC Resin.
Preferably, the coupling agent in step 1 is HOBt / DIPCDI, HOBt / PyBop / DIPEA, HATU / HOAt / DIPEA, HOAt / PyAop / DIPEA, or HBTU / HOBt / DIPEA.
Preferably, the PG of PG-Ser (tBu) -OH in step 1 is a Msz protecting group, a Teoc protecting group, or a Fmoc protecting group.
Preferably, the cracking lysing agent in step 1 is a mixed solution of TFA and water.
Preferably, the solid phase support in step 2 is Wang Resin.
Preferably, the coupling agent in step 2 is HOBt / DIPCDI, HOBt / DMAP / DIPCDI, HOBt / PyBop / DIPEA, HATU / HOAt / DIPEA, HOAt / PyAop / DIPEA, or HBTU / HOBt / DIPEA.
Preferably, the lysing lysing agent in step 2 is a mixed solution of TFA and TIS.
Preferably, the specific operation of the coupling in step 3 is to dissolve in a pyridine / acetic acid buffer solution for 2-4 hours.
Preferably, the specific operation of removing the protecting group of 1-Ser in the fragment A in step 3 is:
When the PG of PG-Ser (tBu) -OH in the fragment A is the protecting group of Msz, the coupling of the fragment A and the fragment B is completed by adding TFA / ammonium iodide / dimethylsulfide to remove the protecting group Msz, and the ether precipitates;
When the PG of PG-Ser (tBu) -OH in the fragment A is a Teoc protecting group, the fragment A and the fragment B are coupled and tetrabutylammonium fluoride is added to remove the protecting group Teoc;
When the PG of PG-Ser (tBu) -OH in the fragment A is a Fmoc protecting group, the fragment A and the fragment B are coupled and diethylamine is added to remove the protecting group Fmoc.
The method for preparing teriparatide in the present invention uses fragment condensation to prepare teriparatide. First synthesize the teriparatide peptide sequence 1-16 (fragment A) and the 17-34 peptide sequence (fragment B), and then couple the two fragments to obtain the crude teriparatide peptide. Riparide. The side chain of the fragment in the invention has no protecting group, has good solubility in water, does not have the problem of difficult coupling, simple operation, and high production efficiency. The obtained teriparatide product has high purity and is easy to purify. Experiments show that the crude peptide of teriparatide obtained by the present invention can obtain a purity of 80% and a total yield of 45%. After simple purification, the purity of spermeptide can reach 99.92%, and the single largest impurity is 0.05%. Compared with the prior art, the invention has the characteristics of high product quality, low cost, and suitability for industrial production.
Example 1: Synthesis of fragment one (Msz-Ser-Val-Ser-Glu-Ile-Gln-Leu-Met-His-Asn-Leu-Gly-Lys-His-Leu-Asn-SAL)
Weigh 20.0 g (10 mmol) of Rink Amide Resin with a substitution degree of 0.5 mmol / g, add it to a solid-phase reaction column, wash it twice with DMF, swell the resin with DMF for 30 minutes, remove the solution, and weigh 18.7 g (50 mmol) ) 3-Fmoc-4-diaminobenzoic acid and 8.1 g (60 mmol) of HOBt were dissolved in DMF, 8.2 g (65 mmol) of DIPCDI was added under an ice bath, and added to a solid-phase reaction column, and reacted at room temperature for 2 hours. The solution was removed by DMF Wash 3 times. The 20% piperidine solution was used to remove the Fmoc protecting group (reaction time 5 + 7 minutes), and DMF was washed 6 times.
According to the peptide sequence of fragment one, the above steps of amino acid coupling and removal of the Fmoc protecting group are repeated, using the coupling agent HOBt / DIPCDI or HOBt / PyBop / DIPEA or HATU / HOAt / DIPEA or HOAt / PyAop / DIPEA or HBTU / HOBt / DIPEA, coupled Fmoc-Asn (Trt) -OH, Fmoc-Leu-OH, Fmoc-His (Trt) -OH, Fmoc-Lys (Boc) -OH, Fmoc-Gly-OH, Fmoc-Leu- OH, Fmoc-Asn (Trt) -OH, Fmoc-His (Trt) -OH, Fmoc-Met-OH, Fmoc-Leu-OH, Fmoc-Gln (Trt) -OH, Fmoc-Ile-OH, Fmoc-Glu (OtBu) -OH, Fmoc-Ser (tBu) -OH, Fmoc-Val-OH, and Msz-Ser (tBu) -OH.
Weigh 10.1 g (50 mmol) of phenyl p-nitrochloroformate in dichloromethane, add it to a solid-phase reaction column, and react at room temperature for 1 hour, then add 12.9 g (100 mol) of DIPEA, react for 30 minutes, and remove the solution. Wash with methyl chloride 6 times. Separately weigh 10.6 g (100 mmol) of sodium carbonate and 100 ml of salicylaldehyde in a mixed solution of DCM / THF (1: 3), add to the peptide resin, react at room temperature overnight, filter, and concentrate the filtrate under reduced pressure to dryness. Finally, it was cleaved with TFA / H 2 O (95: 5) for 2 hours and precipitated with ether to obtain 19.2 g of fragment one.
Example 2: Synthesis of fragment two (Teoc-Ser-Val-Ser-Glu-Ile-Gln-Leu-Met-His-Asn-Leu-Gly-Lys-His-Leu-Asn-SAL)
Weigh 16.7 g (10 mmol) of 2-Cl-CTC Resin with a substitution degree of 0.6 mmol / g, add it to a solid-phase reaction column, wash it twice with DMF, swell the resin with DMF for 30 minutes, remove the solution, and weigh 7.48 g (20 mmol) of 3-Fmoc-4-diaminobenzoic acid was dissolved in DMF, 5.2 g (40 mmol) of DIPEA was added under an ice bath, and the solid phase reaction column was added, and the reaction was performed at room temperature for 0 hours, and 6 ml of methanol was added to block the resin for 1 hour. The solution was removed and washed 6 times with DMF.
Fmoc-Asn (Trt) -OH, Fmoc-Leu-OH, Fmoc-His (Trt) -OH, Fmoc-Lys (Boc) -OH were sequentially coupled according to the peptide sequence of fragment two according to the method in Example 1. , F moc-Gly-OH, Fmoc-Leu-OH, Fmoc-Asn (Trt) -OH, Fmoc-His (Trt) -OH, Fmoc-Met-OH, Fmoc-Leu-OH, Fmoc-Gln (Trt) -OH, Fmoc-Ile-OH, Fmoc-Glu (OtBu) -OH, Fmoc-Ser (tBu) -OH, Fmoc-Val-OH, and Teoc-Ser (tBu) -OH.
Weigh 6.1 g (30 mmol) of phenyl p-nitrochloroformate and dissolve it in dichloromethane, add it to a solid-phase reaction column, and react at room temperature for 1 hour, then add 7.7 g (60 mol) of DIPEA, react for 30 minutes, and remove the solution. Wash with methyl chloride 6 times. Another 6.4 g (60 mmol) of sodium carbonate and 60 ml of salicylaldehyde dissolved in a mixed solution of DCM / THF (1: 1) were added to the peptide resin, reacted at room temperature overnight, filtered, and the filtrate was concentrated under reduced pressure to dryness. Finally, it was cleaved with TFA / H2O (95: 5) for 2 hours and precipitated with ether to obtain 10.5 g of fragment two.
Example 3: Synthesis of fragment three (Fmoc-Ser-Val-Ser-Glu-Ile-Gln-Leu-Met-His-Asn-Leu-Gly-Lys-His-Leu-Asn-SAL)
Fmoc-Ser (tBu) -OH was used for serine at position 1. Other synthetic methods were the same as in Example 1.
Example 4: Synthesis of fragment four (Ser-Met-Glu-Arg-Val-Glu-Trp-Leu-Arg-Lys-Lys-Leu-Gln-Asp-Val-His-Asn-Phe-OH)
Weigh 62.5 g (50 mmol) of Wang Resin with a degree of substitution of 0.8 mmol / g, add it to a solid-phase reaction column, wash it twice with DMF, and swell the resin with DMF for 3 minutes, then weigh 19.37 g (50 mmol) of Fmoc-Phe- OH, 8.1 g (60 mmol) of HOBt and 6.1 g (5 mmol) of DMAP were dissolved in DMF. 8.2 g (65 mmol) of DIPCDI was added under an ice bath, and the solid phase reaction column was added. The mixture was reacted at room temperature for 2 hours and washed with DMF 6 times. 79.1 g (1000 mmol) of pyridine and 102.1 g (1000 mmol) of acetic anhydride were added to seal the resin for 6 hours, washed with DMF 6 times, and the methanol was shrunk and dried to obtain 71.4 g of Fmoc-Phe-WangResin. .
According to the method in Example 1, Fmoc-Asn (Trt) -OH, Fmoc-His (Trt) -OH, Fmoc-Val-OH, Fmoc-Asp (tBu) -OH, Fmoc-Gln (Trt) -OH, Fmoc-Leu-OH, Fmoc-Lys (Boc) -OH, Fmoc-Lys (Boc) -OH, Fmoc-Arg (Pbf) -OH, Fmoc-Leu-OH, Fmoc- Trp (Boc) -OH, Fmoc-Glu (OtBu) -OH, Fmoc-Val-OH, Fmoc-Arg (Pbf) -OH, Fmoc-Glu (OtBu) -OH, Fmoc-Met-OH and Fmoc-Ser ( tBu) -OH, the obtained peptide resin was cleaved with TFA / TIS (95: 5) for 2 hours, and the ether was precipitated to obtain 23.2 g of fragment four.
Example 5: Synthesis of crude teriparatide
19.2 g (10 mmol) of fragment 1 obtained in Example 1 and 23.2 g (10 mmol) of fragment 4 obtained in Example 4 were dissolved in a pyridine / acetic acid buffer solution (1: 1, 10 mM), reacted at room temperature for 2 hours, and concentrated under reduced pressure to Dry, add TFA / ammonium iodide / dimethylsulfide (90: 5: 5) to react for 30 minutes, and diethyl ether precipitates to obtain 37 g of teriparatide crude peptide, purity 80.10%, weight yield 90%. The purity test results are shown in Figure 2 and Table 1.
Example 6: Synthesis of crude teriparatide
21.9 g (10 mmol) of fragment 2 obtained in Example 2 and 23.2 g (10 mmol) of fragment 4 obtained in Example 4 were dissolved in a pyridine / acetic acid buffer solution (1: 1, 10 mM), and reacted at room temperature for 3 hours, and then 26.15 g was added. Tetrabutylammonium fluoride (100 mmol) was reacted overnight to obtain the teriparatide crude peptide solution for direct purification. The purity of the crude peptide was 67.97%. The purity test results are shown in Figure 3 and Table 1.
Example 7: Synthesis of crude teriparatide
21.5 g (10 mmol) of fragment 3 obtained in Example 3 and 23.2 g (10 mmol) of fragment 4 obtained in Example 4 were dissolved in a pyridine / acetic acid buffer solution (1: 1, 10 mM), reacted at room temperature for 4 hours, and concentrated under reduced pressure to Dry, add methanol to dissolve, then add 14.63 g of diethylamine (200 mmol), react at room temperature for 2 hours, and concentrate to dryness under reduced pressure to obtain 45 g of teriparatide crude peptide, purity 63.22%, weight yield 109%. The purity test results are shown in Figure 4 and Table 1.
Example 8: Purification of crude teriparatide
The crude teriparatide peptide obtained in Example 5 was purified by HPLC with a wavelength of 220 nm, a chromatographic column was a reversed-phase C18 column, a 0.1% TFA solution, and acetonitrile were used as mobile phases. The target fractions were collected, concentrated by rotary evaporation, and lyophilized. 18.5 g of teriparatide spermidine was obtained, with a purity of 99.92%, a single maximum impurity of 0.05%, and a total yield of 45%. The purity test results are shown in Figure 5 and Table 1.
The crude teriparatide peptide obtained in Example 6 was purified under the same conditions as described above to obtain 14.8 g of teriparatide spermeptide with a purity of 99.76%, a single maximum impurity of 0.07%, and a total yield of 36%.
The crude teriparatide peptide obtained in Example 7 was purified under the same conditions as described above to obtain 14.0 g of teriparatide spermeptide with a purity of 99.73%, a single maximum impurity of 0.06%, and a total yield of 34%.
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FORTEO (teriparatide [rDNA origin] injection) contains recombinant human parathyroid hormone (1- 34), and is also called rhPTH (1-34). It has an identical sequence to the 34 N-terminal amino acids(the biologically active region) of the 84-amino acid human parathyroid hormone.
Teriparatide has a molecular weight of 4117.8 daltons and its amino acid sequence is shown below:
Teriparatide (rDNA origin) is manufactured using a strain of Escherichia coli modified by recombinant DNA technology. FORTEO is supplied as a sterile, colorless, clear, isotonic solution in a glass cartridge which is pre-assembled into a disposable delivery device (pen) for subcutaneous injection. Each prefilled delivery device is filled with 2.7 mL to deliver 2.4 mL. Each mL contains 250 mcg teriparatide (corrected for acetate, chloride, and water content), 0.41 mg glacial acetic acid, 0.1 mg sodium acetate (anhydrous), 45.4 mg mannitol, 3 mg Metacresol, and Water for Injection. In addition, hydrochloric acid solution 10% and/or sodium hydroxide solution 10% may have been added to adjust the product to pH 4.
Each cartridge, pre-assembled into a delivery device, delivers 20 mcg of teriparatide per dose each day for up to 28 days.
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/////TERIPARATIDE, テリパラチド , терипаратид , تيريباراتيد , 特立帕肽 , PTH 1-34, LY 333334, LY-333334, LY333334, ZT-034, 52232-67-4, PEPTIDES