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Related Experiment Videos

[The solid-phase synthesis of methotrexate-alpha-peptides].

P T Shi1, X K Hao, Y Chen

  • 1Shanghai Institute of Biochemistry, Chinese Academy of Sciences, Shanghai 200031.

Yao Xue Xue Bao = Acta Pharmaceutica Sinica
|January 1, 1997
PubMed
Summary

Methotrexate-alpha-phenylalanine (MTX-alpha-Phe) acts as a prodrug, releasing methotrexate (MTX) for enhanced cancer treatment. In vitro studies show released MTX is 100 times more cytotoxic than the peptide prodrug.

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Inhibition of trypsin with active-site-directed enzyme-activated nitrosoamide substrates.

Biochemistry·1995

Area of Science:

  • Medicinal Chemistry
  • Biochemistry
  • Pharmacology

Context:

  • Methotrexate (MTX) is a crucial chemotherapy agent.
  • Developing effective prodrugs can improve drug delivery and efficacy.
  • Solid-phase peptide synthesis enables precise molecule construction.

Purpose:

  • To synthesize and characterize novel methotrexate-alpha-peptides, specifically MTX-alpha-phenylalanine (MTX-alpha-Phe) and MTX-alpha-arginine (MTX-alpha-Arg).
  • To evaluate the in vitro cytotoxic activity of these prodrugs and their potential for cancer therapy.

Summary:

  • Methotrexate and its alpha-peptides were synthesized using solid-phase peptide synthesis, with purity confirmed by HPLC and molecular weight by mass spectrometry.
  • MTX-alpha-Phe was shown to be hydrolyzed by carboxypeptidase A, releasing active methotrexate.

Related Experiment Videos

  • The in vitro cytotoxicity of released MTX was significantly higher (100-fold) than that of the parent peptide.

    • Impact:

    • MTX-alpha-Phe demonstrates potential as a prodrug for enhanced cancer treatment due to its targeted release and increased cytotoxic potency.
    • This research contributes to the development of novel drug delivery systems for chemotherapy.
    • Further investigation into MTX-alpha-Phe could lead to improved therapeutic strategies for various cancers.