137219-37-5 Usage
Description
Plitidepsin is a cyclic depsipeptide that was first isolated from a Mediterranean marine tunicate (Aplidium albicans) and, at present, is manufactured by total synthesis and commercialized as Aplidin?. Its antitumor activity, observed in preclinical in vitro and in vivo studies has prompted numerous clinical trials to be conducted over the last 17 years, alone or in combination with other anticancer agents.
Biological Activity
Plitidepsin is a cytotoxic peptide originally found in the sea squirt Aplidium albicans. It interacts with a protein (eEF1A2) which is overexpressed in some cancers. This interaction leads to apoptosis. Synthetically produced plitidepsin has been found to have antiproliferative effects on cancer cells. Phase II trials have investigated its activity in tumours such as lung cancer, melanoma and multiple myeloma.
Mechanism of action
Plitidepsin induces apoptosis in multiple myeloma cells, which involves activation of p38 and c-jun NH(2)-terminal kinase signaling, Fas/CD95 translocation to lipid rafts, and ultimately caspase activation. The investigational agent also decreases the proliferation of multiple myeloma cells, an effect mediated by the suppression of several proliferative genes.In a pivotal phase III trial of patients with relapsed or refractory multiple myeloma, plitidepsin in combination with dexamethasone (Dex) significantly reduced the risk of progression or death compared to Dex alone.Plitidepsin has been approved by TGA in Australia for the treatment of multiple myeloma in combination with dexamethasone for patients that relapse after three lines of treatment, including proteasome inhibitors or immunomodulators.
Clinical Use
Plitidepsin is a cyclic depsipeptide isolated from the marine tunicate Aplidium albicans. Plitidepsin displays a broad spectrum of antitumor activities, inducing apoptosis by triggering mitochondrial cytochrome c release, initiating the Fas/ DC95, JNK pathway and activating caspase 3 activation. This agent also inhibits elongation factor 1-a, thereby interfering with protein synthesis, and induces G1 arrest and G2 blockade, thereby inhibiting tumor cell growth.A phase II prospective open-label study (Ferme et al. 2008 ) to evaluate its activity in patients with relapsed/ refractory non-cutaneous PTCL was conducted in 14 patients. They were treated with plitidepsin 3.2 mg/m 2 IV infusion over 1-h on days 1, 8 and 15 every 4 weeks. Eleven patients were evaluable when preliminary results were reported, one was too early and two were non-evaluable. One con fi rmed CR and 3 PR’s were observed with a 36% objective response rate. Median overall survival was 11 months.Plitidepsin was tolerable in this heavily pretreated population with low hematological toxicity. Transient but reversible ALT elevation was noticed in 7 patients.Future trials will establish its role in T-cell lymphoma.
in vitro
In vitro studies have demonstrated that plitidepsin has anti-myeloma activity against 19 multiple myeloma cell lines including cells resistant to anti-myeloma agents frequently used in the clinic (i.e. melphalan, doxorubicin, thalidomide derivatives, and dexamethasone) and primary multiple myeloma cells isolated from patients (13 out 16 showed a response to plitidepsin).
Check Digit Verification of cas no
The CAS Registry Mumber 137219-37-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,7,2,1 and 9 respectively; the second part has 2 digits, 3 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 137219-37:
(8*1)+(7*3)+(6*7)+(5*2)+(4*1)+(3*9)+(2*3)+(1*7)=125
125 % 10 = 5
So 137219-37-5 is a valid CAS Registry Number.
InChI:InChI=1/C57H87N7O15/c1-15-33(8)46-44(66)29-45(67)79-49(32(6)7)48(68)34(9)50(69)58-39(26-30(2)3)54(73)64-25-17-19-41(64)56(75)62(13)43(28-37-20-22-38(77-14)23-21-37)57(76)78-36(11)47(52(71)59-46)60-51(70)42(27-31(4)5)61(12)55(74)40-18-16-24-63(40)53(72)35(10)65/h20-23,30-34,36,39-44,46-47,49,66H,15-19,24-29H2,1-14H3,(H,58,69)(H,59,71)(H,60,70)/t33-,34+,36-,39-,40-,41?,42+,43?,44-,46+,47+,49-/m0/s1
137219-37-5Relevant articles and documents
Total synthesis of dehydrodidemnin B. Use of uronium and phosphonium salt coupling reagents in peptide synthesis in solution
Jou, Gemma,Gonzalez, Isabel,Albericio, Fernando,Lloyd-Williams, Paul,Giralt, Ernest
, p. 354 - 366 (2007/10/03)
New total syntheses of didemnin A and of dehydrodidemnin B are described. The latter didemnin has the highest antiproliferative activity of all members of this family of macrocyclic depsipeptides. It was produced on coupling the side chain Pyr-Pro-OH to d
