Researchers design a nano-carrier to release drugs into damaged cells

Senescent cells are damaged cells that do not perform their normal roles anymore but that are not dead -hence they are commonly known as zombi cells. These cells interfere with the functioning of the tissue in which they accumulate. Senescence is a cell program that is triggered by many types of damage and senescent cells are present in many diseases. They accumulate in diverse types of tissues during aging, thus contributing to the progressive deterioration associated to aging. Eliminating these zombi cells is one of the challenges facing science today.

In the Cellular Plasticity and Disease lab headed by the ICREA researcher Manuel Serrano at the Institute for Research in Biomedicine (IRB Barcelona) and supported by "la Caixa" Banking Foundation, the researchers devise strategies to eliminate senescent cells. In a study published in EMBO Molecular Medicine, they present a proof of principle of a drug delivery system with selectivity for tissues that harbour senescent cells.

In collaboration with a team headed by Ramón Martínez-Máñez at the Universidad Politécnica de Valencia, the IRB Barcelona scientists have exploited a particular hallmark of senescent cells in order to design a delivery system that specifically targets them. They have demonstrated its efficacy in cells in vitro and in two experimental mouse models, namely pulmonary fibrosis and cancer. These diseases are characterized by the presence of damaged cells, and in the case of cancer this is particularly true after treatment with chemotherapy.

In these models, the senescent cells take up the carrier more efficiently than other cells and once inside the cell the casing of the carrier degrades to release the drug cargo. When the nano-vehicles contained cytotoxic compounds, the senescent cells were killed and this resulted in therapeutic improvements in mice with pulmonary fibrosis or with cancer.

"This nano-carrier may pave the way for new therapeutic approaches for serious conditions, such as pulmonary fibrosis or to eliminate chemotherapy-induced senescent cells," explains Manuel Serrano. Another outcome of this study is that these nano-carriers could be used for diagnostic tests of senescence as they can transport a fluorescent compound or marker.

Daniel Muñoz‐Espín, Miguel Rovira, Irene Galiana, Cristina Giménez, Beatriz Lozano‐Torres, Marta Paez‐Ribes, Susana Llanos, Selim Chaib, Maribel Muñoz‐Martín, Alvaro C Ucero, Guillermo Garaulet, Francisca Mulero, Stephen G Dann, Todd VanArsdale, David J Shields, Andrea Bernardos, José Ramón Murguía, Ramón Martínez‐Máñez, Manuel Serrano.
A versatile drug delivery system targeting senescent cells.
EMBO Molecular Medicine (2018) e9355. doi: 10.15252/emmm.201809355.

Most Popular Now

Novartis receives FDA approval for Mayzent® (sipon…

Novartis today announced that the US Food and Drug Administration (FDA) has approved Mayzent® (siponimod) for the treatment of adults with relapsing forms of multiple scl...

Compound that kills drug-resistant fungi is isolat…

Antimicrobial and antifungal resistance, which describe the ability of bacteria and other pathogens to resist the effects of drugs to which they were once sensitive, is a...

First bacterial genome created entirely with a com…

All the genome sequences of organisms known throughout the world are stored in a database belonging to the National Center for Biotechnology Information in the United Sta...

Liver, colon cancer cells thwarted by compounds de…

The plant that adds flavor, color and bitterness to beer also produces a primary compound that thwarts cancer cells, and two important derivatives of the compound do as w...

Clinical trial finds therapy to be well-tolerated …

A phase I clinical trial that set out to assess the safety of a new combination therapy for a type of aggressive brain tumour has found the treatment to be well tolerated...

Immune cells fighting blood cancer visualized for …

When cancer escapes the immune system, our defenses are rendered powerless and are unable to fight against the disease. Chimeric antigen receptor T cells (CAR T cells) re...

FDA approves treatment for patients with a type of…

The U.S. Food and Drug Administration today approved Cimzia (certolizumab pegol) injection for treatment of adults with a certain type of inflammatory arthritis called no...

Boehringer Ingelheim announces FDA and EMA regulat…

Boehringer Ingelheim has filed for regulatory approval of nintedanib in patients with systemic sclerosis associated interstitial lung disease (SSc-ILD) with the FDA and E...

Selumetinib granted US Breakthrough Therapy Design…

AstraZeneca and MSD, Inc., Kenilworth, NJ, US (MSD: known as Merck & Co., Inc. inside the US and Canada) today announced that the US Food and Drug Administration (FDA) ha...

Novartis adds clinical and preclinical anti-inflam…

Novartis announced that it is adding to its broad portfolio of immunomodulatory medicines with the planned acquisition of IFM Tre, a subsidiary of IFM Therapeutics LLC fo...

Forxiga approved in Japan for type-1 diabetes

The Japanese Ministry of Health, Labour and Welfare (MHLW) has approved Forxiga (dapagliflozin) as an oral adjunct treatment to insulin for adults with type-1 diabetes (T...

Novartis continues transformation into a leading m…

Novartis today completed the spin-off of the Alcon eye care devices business through a dividend-in-kind distribution to holders of Novartis shares and ADRs (American Depo...