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Dolastatin 15 (DLS 15), a depsipeptide derived from Dolabella auricularia, is a potent antimitotic agent structurally related to the antitubulin agent Dolastatin 10. Dolastatin 15 induces cell cycle arrest and apoptosis in multiple myeloma cells. Dolastatin 15 can be used as an ADC cytotoxin.

Product information

CAS Number: 123884-00-4

Molecular Weight: 837.06

Formula: C45H68N6O9


DLS 15

Chemical Name: (S)-1-((S)-2-benzyl-3-methoxy-5-oxo-2, 5-dihydro-1H-pyrrol-1-yl)-3-methyl-1-oxobutan-2-yl N-dimethyl-L-valyl-L-valyl-N-methyl-L-valyl-L-prolyl-L-prolinate

Smiles: CN(C)[C@@H](C(C)C)C(=O)N[C@@H](C(C)C)C(=O)N(C)[C@@H](C(C)C)C(=O)N1CCC[C@H]1C(=O)N1CCC[C@H]1C(=O)O[C@@H](C(C)C)C(=O)N1[C@@H](CC2C=CC=CC=2)C(=CC1=O)OC


InChi: InChI=1S/C45H68N6O9/c1-26(2)36(46-40(53)37(27(3)4)47(9)10)42(55)48(11)38(28(5)6)43(56)49-22-16-20-31(49)41(54)50-23-17-21-32(50)45(58)60-39(29(7)8)44(57)51-33(34(59-12)25-35(51)52)24-30-18-14-13-15-19-30/h13-15,18-19,25-29,31-33,36-39H,16-17,20-24H2,1-12H3,(H,46,53)/t31-,32-,33-,36-,37-,38-,39-/m0/s1

Technical Data

Appearance: Solid Power

Purity: ≥98% (or refer to the Certificate of Analysis)

Solubility: Soluble in DMSO

Shipping Condition: Shipped under ambient temperature as non-hazardous chemical or refer to Certificate of Analysis

Storage Condition: Dry, dark and -20 oC for 1 year or refer to the Certificate of Analysis.

Shelf Life: ≥12 months if stored properly.

Stock Solution Storage: 0 - 4 oC for 1 month or refer to the Certificate of Analysis.

Drug Formulation: To be determined

HS Tariff Code: 382200

How to use

In Vitro:

Dolastatin 15 (DLS 15) induces cell cycle arrest at the G2/M phase followed by apoptosis in various human myeloma cell lines (RPMI8226, U266, and IM9). Dolastatin 15 induces apoptosis of myeloma cells via activation of both mitochondrial- and Fas (CD95)/Fas-L (CD95-L)-mediated pathways. Dolastatin 15 (DLS 15) displays growth inhibitory activity against all four SCLC cell lines (NCI-H69, NCI-H82, NCI-H345, NCI-H446) with IC50 values ranging from 0.039-28.8 nM, which were 2.7-9.2-fold higher than the values for dolastatin 10. All four SCLC cell lines underwent G2/M arrest within 24 hours of exposure to dolastatin 15.

In Vivo:

Dolastatin 15 conjugates to Trastuzumab via lysine residues at the drug C-terminus using a non-cleavable linker (Trastuzumab-amide-C-term-Dol15) produced target-dependent growth inhibition of cells endogenously expressing high HER2 levels (i.e., SK-BR-3, SK-OV-3) in vitro. This ADC was effective at varying doses (i.e., 10 and 20 mg/kg) in the SK-OV-3 human ovarian cancer xenograft.


  1. Bai R, et al. Dolastatin 15, a potent antimitotic depsipeptide derived from Dolabella auricularia. Interaction with tubulin and effects of cellular microtubules. Biochem Pharmacol. 1992 Jun 23;43(12):2637-45.
  2. Ali MA, et al. Dolastatin 15 induces apoptosis and BCL-2 phosphorylation in small cell lung cancer cell lines. Anticancer Res. 1998 Mar-Apr;18(2A):1021-6.
  3. Sato M, et al. A natural peptide, dolastatin 15, induces G2/M cell cycle arrest and apoptosis of human multiple myeloma cells. Int J Oncol. 2007 Jun;30(6):1453-9.

Products are for research use only. Not for human use.


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