PhD Defense · 17 June 2026

From Target to Modulator.

Integrative approaches to understanding and activating the gamma-glutamyl cycle in heart failure.

Candidate Jose Antonio Esquivel-Gaytan
Institution University of Groningen
Supervisor Prof. P. van der Meer

01 · Public DefenseYou are invited.

University of Groningen

The public defense of the doctoral thesis
From Target to Modulator

Date
Wednesday, 17 June 2026
Time
14.30 hours
Venue
Aula, Academiegebouw
Broerstraat 5, 9712 CP Groningen
By
Jose Antonio Esquivel-Gaytan
Promotor
Prof. P. van der Meer
Co-promotor
Dr. N. Bömer
Paranymphs
Karla Arevalo, MSc
Valentina Braçun, PhD
Days
Hours
Minutes
Seconds
Academiegebouw
Broerstraat 5, 9712 CP Groningen
The Netherlands
View on map →

And afterwards — you are invited to celebrate.

17 June 2026
01 · Reception
Directly after~ 16.30
Reception

Same building — Academiegebouw, Broerstraat 5

Drinks and bites with the committee, family and friends, immediately following the defense in the Aula.

02 · Drinks
From 19.15
Celebration drinks

Hemingway Groningen ↗

An informal evening to keep the conversation going. Come for one, stay for many — everyone welcome.

02 · The ThesisFrom Target to Modulator.

Thesis cover: From Target to Modulator
Click to open the flipbook

Heart failure remains one of the most challenging syndromes in contemporary cardiovascular medicine — population studies still report ~50% mortality at five years after diagnosis. Decades of antioxidant trials have largely failed, yet the underlying premise — that oxidative stress drives progression — keeps reasserting itself.

This thesis steps back from broad-spectrum antioxidants and into a single regulatory hub: the gamma-glutamyl cycle. Across six chapters it moves from systematic evidence and patient cohorts, through translational biomarkers, into novel nanoparticle-mediated delivery of an activator for 5-oxoprolinase — reframing a metabolic target as a tractable modulator for heart-failure therapy.

Access phrase required — request it via email below.

03 · Chapters & PublicationsSix chapters, one cycle.

CH. 01

General Introduction

Framing the heart-failure burden, oxidative stress as an outdated paradigm, and the case for the gamma-glutamyl cycle.
p. 09
CH. 02

Glutathione Deficiency and Heart Failure

A systematic review of human and animal evidence — what we actually know about glutathione depletion across heart-failure phenotypes.
Published · ScienceDirect
p. 17
CH. 03

Elevated 5-Oxoproline Levels and Adverse Outcomes

A clinical biomarker study linking 5-oxoproline to outcomes in heart-failure cohorts — and what it reveals about a stressed cycle.
p. 61
CH. 04

Nanoparticle-Mediated AMP Delivery

Adenosine 5′-monophosphate, delivered via nanoparticles, enhances 5-oxoprolinase activity and mitigates oxidative stress in heart failure.
Published · Advanced Therapeutics (Wiley)
p. 127
CH. 05

404-Error “Disease Not Found”

Unleashing the translational potential of -omics approaches beyond traditional disease classification in heart-failure research.
Published · European Journal of Heart Failure
p. 171
CH. 06

General Discussion

Synthesis: from target to modulator. What changes if we treat the gamma-glutamyl cycle as a tunable system rather than a passive readout.
p. 205

04 · ContactStay in touch.

MD from the National Autonomous University of Mexico (2016); MSc in Nanotechnology & Regenerative Medicine from UCL (2017, distinction); PhD candidate at the UMCG Experimental Cardiology department since 2018, currently exploring 5-oxoprolinase as a therapeutic target for heart failure with preserved ejection fraction.

Open to conversations about heart-failure metabolism, translational nanomedicine, and AI-driven tools for biomedical research.