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A complete up-to-date list of publications of Robert can be found on Google Scholar and full-texts might be available from the Warwick Research Active Portal (WRAP).

Hyperbranched poly(ethylenimine-co-oxazoline) by thiol-yne chemistry for non-viral gene delivery:investigating the role of polymer architecture

Happy to have been able to help out for this interesting new paper looking into new ways of transfecting cells.

Fri 01 Feb 2019, 21:12 | Tags: Original Article 2019

RAFT Emulsion Polymerization as a Platform to Generate Well‐Defined Biocompatible Latex Nanoparticles

The first paper in collaboration with the group of Prof. Seb Perrier (Warwick Chemistry)

Current approaches to generate core–shell nanoparticles for biomedical applications are limited by factors such as synthetic scalability and circula- tory desorption of cytotoxic surfactants. Developments in controlled radical polymerization, particularly in dispersed states, represent a promising method of overcoming these challenges. In this work, well-defined PEGylated nanoparticles are synthesized using reversible addition fragmentation chain transfer emulsion polymerization to control particle size and surface compo- sition and were further characterized with light scattering, electron micros- copy, and size exclusion chromatography. Importantly, the nanoparticles are found to be tolerated both in vitro and in vivo, without the need for any puri- fication after particle synthesis. Pharmacokinetic and biodistribution studies in mice, following intraperitoneal injection of the nanoparticles, reveal a long (>76 h) circulation time and accumulation in the liver.

Thu 09 Aug 2018, 22:49 | Tags: 2018 Original Article

Circadian rest-activity rhythm as an objective biomarker of patient-reported outcomes in patients with advanced cancer

Collaboration lead by Pasquale Innominato

In this international observational study including two independent cohorts of patients with advanced cancers, an objective measure of circadian function was significantly associated with symptoms’ score severity and health-related quality of life. Circadian rest-activity pattern monitoring through wearable devices provides a reliable, consistent and continuous biomarker that identifies several psychosocial dimensions.

Sat 30 Jun 2018, 21:56 | Tags: 2018 Original Article

Circadian Control of DRP1 Activity Regulates Mitochondrial Dynamics and Bioenergetics

Mitochondrial fission-fusion dynamics and mitochondrial bioenergetics, including oxidative phosphorylation and generation of ATP, are strongly clock controlled. Here we show that these circadian oscillations depend on circadian modification of dynamin-related protein 1 (DRP1), a key mediator of mitochondrial fission. We used a combination of in vitro and in vivo models, including human skin fibroblasts and DRP1-deficient or clock-deficient mice, to show that these dynamics are clock controlled via circadian regulation of DRP1. Genetic or pharmacological abrogation of DRP1 activity abolished circadian network dynamics and mitochondrial respiratory activity and eliminated circadian ATP production. Pharmacological silencing of pathways regulating circadian metabolism and mitochondrial function (e.g., sirtuins, AMPK) also altered DRP1 phosphorylation, and abrogation of DRP1 activity impaired circadian function. Our findings provide new insight into the crosstalk between the mitochondrial network and circadian cycles.

Tue 27 Feb 2018, 21:27 | Tags: 2018 Original Article

Dosing time dependent in vitro pharmacodynamics of Everolimus despite a defective circadian clock

First collaboration manuscript between Warwick and Paris

Everolimus (EV), a rapamycin analogue mTOR inhibitor, is used in the clinic to treat Estrogen positive (ER+) breast cancer in order to avoid the resistance to hormonotherapy. Here, we investigate if EV has different effects dependent on time of administration.

Tue 03 Oct 2017, 16:11 | Tags: 2017 Original Article

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