• Home
  • Search Results
  • Tumor cell-derived exosomes home to their cells of origin and can be used as Trojan horses to deliver cancer drugs.

Tumor cell-derived exosomes home to their cells of origin and can be used as Trojan horses to deliver cancer drugs.

Theranostics (2020-03-25)
Li Qiao, Shiqi Hu, Ke Huang, Teng Su, Zhenhua Li, Adam Vandergriff, Jhon Cores, Phuong-Uyen Dinh, Tyler Allen, Deliang Shen, Hongxia Liang, Yongjun Li, Ke Cheng
ABSTRACT

Cancer is the second leading cause of death worldwide and patients are in urgent need of therapies that can effectively target cancer with minimal off-target side effects. Exosomes are extracellular nano-shuttles that facilitate intercellular communication between cells and organs. It has been established that tumor-derived exosomes contain a similar protein and lipid composition to that of the cells that secrete them, indicating that exosomes might be uniquely employed as carriers for anti-cancer therapeutics. Methods: We isolated exosomes from two cancer cell lines, then co-cultured each type of cancer cells with these two kinds of exosomes and quantified exosome. HT1080 or Hela exosomes were systemically injected to Nude mice bearing a subcutaneous HT1080 tumor to investigate their cancer-homing behavior. Moreover, cancer cell-derived exosomes were engineered to carry Doxil (a common chemotherapy drug), known as D-exo, were used to detect their target and therapeutic efficacy as anti-cancer drugs. Exosome proteome array analysis were used to reveal the mechanism underly this phenomenon. Results: Exosomes derived from cancer cells fuse preferentially with their parent cancer cells, in vitro. Systemically injected tumor-derived exosomes home to their original tumor tissues. Moreover, compared to Doxil alone, the drug-loaded exosomes showed enhanced therapeutic retention in tumor tissues and eradicated them more effectively in nude mice. Exosome proteome array analysis revealed distinct integrin expression patterns, which might shed light on the underlying mechanisms that explain the exosomal cancer-homing behavior. Conclusion: Here we demonstrate that the exosomes' ability to target the parent cancer is a phenomenon that opens up new ways to devise targeted therapies to deliver anti-tumor drugs.

MATERIALS
Product Number
Brand
Product Description

Sigma-Aldrich
RIPA Buffer
Sigma-Aldrich
Cell Counting Kit - 8, for quantitation of viable cell number in proliferation and cytotoxicity assays
Millipore
Steriflip-GP Sterile Centrifuge Tube Top Filter Unit, Sterile, 50 mL process volume, 0.22 µm pore size, polyethersulfone membrane, sterilized by gamma irradiation
Sigma-Aldrich
(Tyr[SO3H]27)Cholecystokinin fragment 26-33 Amide, ≥97% (HPLC), powder

Social Media

LinkedIn icon
Twitter icon
Facebook Icon
Instagram Icon

MilliporeSigma

Research. Development. Production.

We are a leading supplier to the global Life Science industry with solutions and services for research, biotechnology development and production, and pharmaceutical drug therapy development and production.

© 2021 Merck KGaA, Darmstadt, Germany and/or its affiliates. All Rights Reserved.

Reproduction of any materials from the site is strictly forbidden without permission.