Publications de Alexandre de Titta

Adjuvant-free immunization with infective filarial larvae as lymphatic homing antigen carriers

Melody Swartz, Marcela Rincón-Restrepo, Sachiko Hirosue, Witold Waldemar Kilarski, Alexandre de Titta, Esra Güç, David Scott Wilson

Controlled infection with intestinal nematodes has therapeutic potential for preventing the symptoms of allergic and autoimmune diseases. Here, we engineered larvae of the filarial nematode Litomosoides sigmodontis as a vaccine strategy to induce adaptive ...

Nature Research2020

Toll-like receptor 8 agonist nanoparticles mimic immunomodulating effects of the live BCG vaccine and enhance neonatal innate and adaptive immune responses

Jeffrey Alan Hubbell, Melody Swartz, Sachiko Hirosue, Alexandre de Titta, Daniel Kenneth Bonner

Background: Newborns display distinct immune responses, leaving them vulnerable to infections and impairing immunization. Targeting newborn dendritic cells (DCs), which integrate vaccine signals into adaptive immune responses, might enable development of a ...

2017

Fibronectin EDA and CpG synergize to enhance antigen-specific Th1 and cytotoxic responses

Jeffrey Alan Hubbell, Eleonora Simeoni, Melody Swartz, Alexandre de Titta, Alizée Jéléna Grimm, Ziad Julier

Subunit vaccines, employing purified protein antigens rather than intact pathogens, require the addition of adjuvants for enhanced immunogenicity with a correct balance between strong activation of the immune system and low toxicity. Here we show that the ...

Elsevier Sci Ltd2016

Nanoparticle conjugation enhances the immunomodulatory effects of intranasally delivered CpG in house dust mite-allergic mice

Jeffrey Alan Hubbell, Melody Swartz, Benjamin John Marsland, Alexandre de Titta, Marie Ballester, Laura Jeanbart

An emerging strategy in preventing and treating airway allergy consists of modulating the immune response induced against allergens in the lungs. CpG oligodeoxynucleotides have been investigated in airway allergy studies, but even if promising, efficacy re ...

Nature Publishing Group2015

The TLR4 Agonist Fibronectin Extra Domain A is Cryptic, Exposed by Elastase-2; use in a fibrin matrix cancer vaccine

Jeffrey Alan Hubbell, Mikaël Martino, Alexandre de Titta, Laura Jeanbart, Ziad Julier

Fibronectin (FN) is an extracellular matrix (ECM) protein including numerous fibronectin type III (FNIII) repeats with different functions. The alternatively spliced FN variant containing the extra domain A (FNIII EDA), located between FNIII 11 and FNIII 1 ...

Nature Publishing Group2015

Enhancing Efficacy of Anticancer Vaccines by Targeted Delivery to Tumor-Draining Lymph Nodes

Jeffrey Alan Hubbell, Melody Swartz, Alexandre de Titta, Pedro Romero, Marie Ballester, Laura Jeanbart, Patricia Corthésy Henrioud

The sentinel or tumor-draining lymph node (tdLN) serves as a metastatic niche for many solid tumors and is altered via tumor-derived factors that support tumor progression and metastasis. tdLNs are often removed surgically, and therapeutic vaccines against ...

Amer Assoc Cancer Research2014

Materials and protein engineering approaches for modulating immunity

Jeffrey Alan Hubbell, Melody Swartz, Alexandre de Titta, Stephane Kontos, Marie Ballester, Kristen Lorentz, Laura Jeanbart, Alizée Jéléna Grimm, David Scott Wilson, Kym Lorenz Brünggel

Amer Chemical Soc2014

Engineering adjuvants for prophylactic and therapeutic subunit vaccines

Alexandre de Titta

EPFL2014

Nanoparticle conjugation of CpG enhances adjuvancy for cellular immunity and memory recall at low dose

Jeffrey Alan Hubbell, Melody Swartz, Alexandre de Titta, Marie Ballester, Laura Jeanbart, Ziad Julier

In subunit vaccines, strong CD8(+) T-cell responses are desired, yet they are elusive at reasonable adjuvant doses. We show that targeting adjuvant to the lymph node (LN) via ultrasmall polymeric nanoparticles (NPs), which rapidly drain to the LN after int ...

National Academy of Sciences2013

Peripherally Administered Nanoparticles Target Monocytic Myeloid Cells, Secondary Lymphoid Organs and Tumors in Mice

Jeffrey Alan Hubbell, Melody Swartz, Sachiko Hirosue, Alexandre de Titta, Stephane Kontos, Iraklis Kourtis

Nanoparticles have been extensively developed for therapeutic and diagnostic applications. While the focus of nanoparticle trafficking in vivo has traditionally been on drug delivery and organ-level biodistribution and clearance, recent work in cancer biol ...

Public Library of Science2013