rethinkPeptides Search
Menu
Home / Research library
Study breakdown

Wasp Venom Peptide Shows Unexpected Anti-Malaria and Anti-Cancer Activity

RPEP-051692020Torres, Marcelo D T; Silva, Adriana F; Andrade, Gislaine P; Pedron, Cibele N; Cerchiaro, Giselle; Ribeiro, Anderson O; Oliveira, Vani X; de la Fuente-Nunez, Cesar
In VitroPreliminary evidence
The takeaway

The wasp venom peptide polybia-CP and its redesigned derivatives kill malaria parasites and cancer cells, with helical structure and positive charge driving antimalarial potency.

Dual activity

Wasp venom peptide derivatives kill both malaria parasites and cancer cells while having reduced toxicity

What the researchers found

Polybia-CP derivatives with optimized helicity and charge show potent antiplasmodial and anticancer activity while having reduced general toxicity compared to the wild-type peptide.

Why it matters

Malaria kills hundreds of thousands annually and drug resistance is growing. Antimicrobial peptides with antiplasmodial activity represent a new drug class with a different mechanism of action.

The numbers in context

Submicromolar antiplasmodial potency; micromolar anticancer; helicity + charge drive activity; hydrophobicity needed for cancer

How the study worked

Physicochemical-guided peptide design, antiplasmodial activity against Plasmodium sporozoites, cancer cell killing assays, structure-activity analysis.

Who was studied

In vitro Plasmodium sporozoite and cancer cell assays

What this study cannot tell us

In vitro activity data only. Selectivity between parasite/cancer cells and host cells needs further optimization. No in vivo efficacy data.

How to read the evidence

In vitro proof-of-concept demonstrating new biological activities. Early discovery stage.

When this study was published

Published in 2020. Antimicrobial peptides as antimalarials is a relatively new research direction.

The bigger picture

This study reveals that antimicrobial peptides may have broader biological activities than originally recognized, opening new applications in infectious disease and oncology.

Questions still open

  • Can polybia-CP derivatives be optimized for safe in vivo antimalarial use?
  • What is the mechanism of action against Plasmodium sporozoites?
  • Could these peptides complement existing antimalarial drugs?

Common questions

How can a wasp venom peptide fight malaria?
Antimicrobial peptides interact with cell membranes. Malaria parasites (Plasmodium sporozoites) have membrane properties that make them vulnerable to these peptides. The researchers found that peptides with the right balance of helical shape and positive charge are particularly effective.
Why redesign the original wasp venom peptide?
The natural peptide polybia-CP is effective but also highly toxic to healthy cells. By modifying its sequence, researchers reversed the toxicity while preserving and even enhancing its antimicrobial, antimalarial, and anticancer properties.

Read the original research

The wasp venom antimicrobial peptide polybia-CP and its synthetic derivatives display antiplasmodial and anticancer properties.

Bioengineering & translational medicine, 5(3), e10167

View on PubMed ↗Publisher’s paper ↗

Citation

Torres, Marcelo D T; Silva, Adriana F; Andrade, Gislaine P; Pedron, Cibele N; Cerchiaro, Giselle; Ribeiro, Anderson O; Oliveira, Vani X; de la Fuente-Nunez, Cesar. (2020). The wasp venom antimicrobial peptide polybia-CP and its synthetic derivatives display antiplasmodial and anticancer properties.. Bioengineering & translational medicine, 5(3), e10167. https://doi.org/10.1002/btm2.10167