Laboratory for Fluorescence Dynamics

A national research center for biomedical fluorescence spectroscopy at the University of California, Irvine


Weber Symposium Flyer


We gratefully acknowledge the sponsorship of the following organizations:

Globals Software

International Union for Pure Applied Biophysics

ISS Inc.

ISS Inc.

Uruguay Natural

11th International Weber Symposium

The 11th International Weber Symposium on Innovative Fluorescence Methodologies in Biochemistry and Medicine, "Weber Symposium", was held in Punta del Este, Uruguay, on January 8-13, 2023.

The symposium honors the fundamental and far-reaching contributions of Professor Gregorio Weber. It provides an overview of modern fluorescence methodologies and applications in the biological and medical sciences. Weber symposia were held in Búzios, Brazil, in 2017, in Hawaii in 2014, 2011, 2008, 2005, 2002, 1999, and 1995, and in Italy in 1986 and 1991.

Speakers describe state-of-the-art and emerging technologies used in their research programs. Topics include time-resolved fluorescence, phasors, Förster resonance energy transfer, multi-photon fluorescence microscopy, confocal microscopy, single molecule studies, fluctuation correlation spectroscopy, fluorescence imaging spectroscopy, macromolecular (nucleic acids and proteins) interactions, membrane dynamics, and quantitative cellular dynamics including metabolism.

Dates and Updates

  • Sunday January 8, 2023: Symposium started
  • October 2, 2022:Deadline extension: for Registrations and application to "Postdocs and Graduate Students Fellowships (for Latin America)"
  • September 26, 2022: Deadline for registrations and change of abstracts
  • September 26, 2022: Cut off date for the special hotel room rate.

General Information


View Larger Map

The venue for the 2023 meeting is The Grand Hotel, Punta del Este, Uruguay. Punta del Este is located an hour and a half from Montevideo, the capital of Uruguay.


A block of rooms is being held at The Grand Hotel Punta del Este. We have negotiated a special group rate of $300 per night. The resort's cut-off date for obtaining the special group rate is September 26, 2022. Be advised that there are a limited number of rooms at this rate. When the rooms at the group rate are gone, the regular hotel rate (which is considerably higher since these dates are during the summer high-season in Uruguay) will apply. A limited number of rooms will be available for 2 days after the meeting for the special rate. To use the special group rate, hotel room reservations must be made by the symposium organizers.


Transportation from the Montevideo Airport (MVD) to Punta del Este and back will be available on January 8 (pickup times to be determined) and January 13 after the meeting ends(aprox. 1pm meeting ends).

Public transportation (buses, Uber) is available to go from Montevideo Airport (MVD, Aeropuerto Carrasco) to Punta del Este. There are two bus companies (COT and COPSA ESTE) with bus stops inside the airport. The duration of the trip is approximately 2 hours by bus.


A visa may be required when travelling to Uruguay. Please check the visa requirements for your country.

Abstracts and Posters

All speakers and participants who wish to hang a poster and all speakers must submit an abstract. For abstract submission please fill up the Registration Form. Abstracts and posters must be scientific in nature; posters containing advertising are not allowed. Abstracts must contain 300 words maximum.

Posters are not required for attendance. Howerver, to be eligible for a Postdocs and Graduate students Fellowships (Latin America) is mandatory to submit an abstract and present a poster.

Based on a committee selection some of the abstract could be selected for a short talk.

The deadline for submitting abstracts for inclusion in the abstract book is September 26, 2022. Deadline extension: October 2, 2022

Size of poster area: Individual, free-standing poster boards will be used this year. The area allotted for each poster will be 4x4 feet. If your poster is in one large piece, it may extend below the 4-foot area, but cannot be wider than 4 feet.

Posters will be on display throughout the symposium. Times will be announced for the poster presentation sessions.

Exhibits and Advertisements

Companies and institutions interested to advertise in the conference abstract book or exhibit at the Weber Symposium should refer to the exhibits page.

Postdocs and Graduate Students Fellowships (for Latin America)

Ten fellowships will be available for Latin American postdocs and graduate students to cover travel and accommodation expenses. For fellowship application please fill out the Registration Form.

To be eligible for a fellowship for postdocs and graduate students in Latin America is mandatory to submit an abstract and present a poster.

A statement regarding the reasons you want to attend this symposium (300 words max.) will be required in the Registration Form.

The deadline to apply to the fellowship is September 26, 2022. Deadline extension: October 2, 2022

Notifications of the assigned fellowships should be expected by mid-October, 2022.

Registration and Payments

To register to attend the symposium please fill up the Registration Form.

The deadline for registration or change of abstracts is September 26, 2022. Deadline extension: October 2, 2022


  • Professionals: free
  • Students: free
  • Table-top Exhibitor: $1000
  • Regular Exhibitors: $2500
  • Sponsors: $4000 or more

Speaker list

  1. Francisco Barrantes - Argentina - Topography and dynamics of an archetypal neurotransmitter receptor and its dependence on the membrane environment
  2. Mellisa Birol - Germany – Quantitative modelling of the invasive and progressive nature of neurodegeneration using single molecule within scales
  3. Francesco Cardarelli - Italy – Once in a (fluorescence) lifetime: from synthetic identity to biological function of nanoencapsulated drugs in biomedical applications
  4. Soledad Celej - Argentina - Exploring the phase behavior of neurodegenerative disease-related proteins
  5. Amitabha Chattopadhyay - India – Cholesterol-dependent Endocytosis and Trafficking of GPCRs: Implications in Pathophysiology and Therapeutic
  6. Alberto Diaspro - Italy - The multimodal microscope and the Plato’s allegory of the cave. Increasing knowledge by coupling fluorescence and label-free mechanisms of contrast
  7. Michelle Digman - USA - Metabolic profiling and tracking phenotypic changes in mitochondria in cancer cells with Mitometer and the phasor approach to FLIM
  8. Elliot Elson - USA - How do Mechanical Interactions among Cells Influence their Phenotypes?
  9. Joerg Enderlein - Germany – Metal- and Graphene-Induced Energy Transfer Imaging
  10. Debora Foguel - Brazil - The role of neutrophils and neutrophil extracellular traps (NETs) in amyloid diseases
  11. Enrico Gratton - USA - Multiplexing spectra and lifetime in 32 channels simultaneously
  12. Hernan Grecco - Argentina - From experiments to model and back: activity flow in the apoptotic network
  13. Adán Guerrero - Mexico - Enhancing resolution within a single imaging frame
  14. Taekjip Ha - USA – Light, CRISPR and DNA repair
  15. Per Nik Hedde - Germany - Hyperspectral light sheet imaging of live cells and organisms
  16. Elizabeth Hinde - Australia - Fluorescence fluctuation spectroscopy of protein transport as a function of oligomeric state
  17. Martin Hof - Czech Republic - Protein hydration and dynamics seen by fluorescence: TDFS and PET-FCS
  18. Caron Jacobs - South Africa - Shedding light on mycobacterial metabolism
  19. David Jameson - USA - Nanoimaging Studies on Cytoplasmic and Nuclear Arc/Arg3.1
  20. Jay Knutson - USA - Multiple metabolic insights via FLIM
  21. Melike Lakadamyali - USA - Visualizing the inner life of cells with super-resolution microscopy
  22. Don Lamb - Germany - Measuring protein dynamics using smFRET
  23. Markita Landry - USA - Imaging chemical neurotransmission in the brain with near-infrared nanosensors
  24. Luca Lanzanò - Italy - Lifetime-based super-resolution and its application to a model of oncogenesis
  25. Luke Lavis - USA - Building bright fluorophores for advanced microscopy and beyond
  26. Valeria Levi - Argentina – Transcription factors on the move: organization and dynamics through the microscope
  27. Leonel Malacrida - Uruguay - Accessing to cellular innards water dipolar relaxation by dimethylamino-naphthalene probes and phasor analysis of multiplexing fluorescence microscopy
  28. Joachim Mueller - USA - Partitioning of ribonucleoprotein complexes at the cellular actin cortex visualized by quantitative z-scan fluorescence microscopy
  29. Sua Myong - USA - Measuring G-quadruplex and R-loop formation in transcription and translation
  30. Francesco Palomba - USA - Advanced fluorescence microscopy techniques for the biophysical understanding of protein condensates
  31. Vicente Parot - Chile - All-optical neurophysiology using high-speed wide-area optical sectioning
  32. Susana A Sánchez - Chile - Cell Membrane heterogeneity and media stiffness
  33. Lorenzo Scipioni - USA - Phasor Spectral and Lifetime Imaging Microscopy (Phasor S-FLIM) for multiplexed profiling of living cells
  34. Jerson Silva - Brazil - Phase Separation and Aggregation of Mutant p53 detected by Fluorescence
  35. Fernando Stefani - Argentina - Single-molecule localization through sequential structured illumination for super-resolution microscopy with true nm resolution
  36. Ilaria Testa - Sweden - From 4D optical nanoscopy to rotational diffusivity: versatile tools to study molecular dynamics in situ
  37. Belén Torrado - USA - Simultaneous FLIM, Harmonic Generation and Hyperspectral Imaging using optical filters
  38. Srigokul Upadhyayula - USA - Making the invisible visible: imaging subcellular dynamics in multicellular systems
  39. Alex Vallmitjana - USA – Clustering and unmixing fluorescent components via phasor analysis
  40. Thorsten Wohland - Singapore – Computational Advances and Applications in Imaging Fluorescence Correlation Spectroscopy

Organizing Committee

  • Leonel Malacrida
    Institut Pasteur de Montevideo, and Hospital de Clínicas, Universidad de la República, Uruguay.
  • David M. Jameson
    Professor of Cell and Molecular Biology, John A Burns School of Medicine, University of Hawaii at Manoa.
  • Enrico Gratton
    Principal Investigator of the LFD. Professor of Biomedical Engineering, Physics, and College of Medicine, University of California, Irvine.

Symposium Administrators

  • Belén Torrado
    Postdoctoral Research Scholar. Laboratory for Fluorescence Dynamics. University of California, Irvine, USA.
  • Marcela Diaz
    Unidad de Bioimagenología Avanzada. Institut Pasteur de Montevideo, Montevideo, Uruguay.