Alice Dautry-Varsat

SNARE protein mimicry by an intracellular bacterium (2008)

Delevoye, Cédric, Nilges, Michael, Dehoux, Pierre, Paumet, Fabienne, Perrinet, Stéphanie, Dautry-Varsat, Alice, ...

Many intracellular pathogens rely on host cell membrane compartments for their survival. The strategies they have developed to subvert intracellular trafficking are often unknown, and SNARE proteins,...

SNARE protein mimicry by an intracellular bacterium (2008)

Delevoye, Cédric, Nilges, Michael, Dehoux, Pierre, Paumet, Fabienne, Perrinet, Stéphanie, Dautry-Varsat, Alice, ...

Many intracellular pathogens rely on host cell membrane compartments for their survival. The strategies they have developed to subvert intracellular trafficking are often unknown, and SNARE proteins,...

RNAi Screen in Drosophila Cells Reveals the Involvement of the Tom Complex in Chlamydia Infection (2007)

Isabelle Derré, Marc Pypaert, Alice Dautry-Varsat, Hervé Agaisse

Chlamydia spp. are intracellular obligate bacterial pathogens that infect a wide range of host cells. Here, we show that C. caviae enters, replicates, and performs a complete developmental cycle in...

RNAi screen in Drosophila cells reveals the involvement of the Tom complex in Chlamydia infection. (2007)

Derré, Isabelle, Pypaert, Marc, Dautry-Varsat, Alice, Agaisse, Hervé

Chlamydia spp. are intracellular obligate bacterial pathogens that infect a wide range of host cells. Here, we show that C. caviae enters, replicates, and performs a complete developmental cycle in...

RNAi screen in Drosophila cells reveals the involvement of the Tom complex in Chlamydia infection. (2007)

Derré, Isabelle, Pypaert, Marc, Dautry-Varsat, Alice, Agaisse, Hervé

Chlamydia spp. are intracellular obligate bacterial pathogens that infect a wide range of host cells. Here, we show that C. caviae enters, replicates, and performs a complete developmental cycle in...

Cortactin and dynamin are required for the clathrin-independent endocytosis of gammac cytokine receptor. (2005)

Sauvonnet, Nathalie, Dujeancourt, Annick, Dautry-Varsat, Alice

Endocytosis is critical for many cellular functions. We show that endocytosis of the common gammac cytokine receptor is clathrin independent by using a dominant-negative mutant of Eps15 or RNA...

Cortactin and dynamin are required for the clathrin-independent endocytosis of gammac cytokine receptor. (2005)

Sauvonnet, Nathalie, Dujeancourt, Annick, Dautry-Varsat, Alice

Endocytosis is critical for many cellular functions. We show that endocytosis of the common gammac cytokine receptor is clathrin independent by using a dominant-negative mutant of Eps15 or RNA...

An alpha-helical signal in the cytosolic domain of the interleukin 2 receptor beta chain mediates sorting towards degradation after endocytosis. (1997)

Subtil, Agathe, Delepierre, Muriel, Dautry-Varsat, Alice

High-affinity IL2 receptors consist of three components, the alpha, beta, and gamma chains that are associated in a noncovalent manner. Both the beta and gamma chains belong to the cytokine receptor...

An alpha-helical signal in the cytosolic domain of the interleukin 2 receptor beta chain mediates sorting towards degradation after endocytosis. (1997)

Subtil, Agathe, Delepierre, Muriel, Dautry-Varsat, Alice

High-affinity IL2 receptors consist of three components, the alpha, beta, and gamma chains that are associated in a noncovalent manner. Both the beta and gamma chains belong to the cytokine receptor...

Transcriptional and post-transcriptional mechanisms are involved in the absence of CD4 surface expression in two HIV-1 chronically infected T cell lines (1993)

Serpente, Norberto, Hemar, Agnées, Cefal, Daniel, Dautry-Varsat, Alice, Fagard, Remi, Fischer, Siegmund, ...

In vivo infection of human T cell lymphocytes by HIV-1 is mediated by the specific binding of the HIV-1 envelope glycoprotein gp120 to the T cell CD4 receptor. One of the post-infection events...

Involvement of the Ubiquitin/Proteasome System in Sorting of the Interleukin 2 Receptor β Chain to Late Endocytic Compartments

Rocca, Anna, Lamaze, Christophe, Subtil, Agathe, Dautry-Varsat, Alice

Down-regulation of cell surface growth factor receptors plays a key role in the tight control of cellular responses. Recent reports suggest that the ubiquitin system, in addition to participating in...

Megalin-dependent cubilin-mediated endocytosis is a major pathway for the apical uptake of transferrin in polarized epithelia

Kozyraki, Renata, Fyfe, John, Verroust, Pierre J., Jacobsen, Christian, Dautry-Varsat, Alice, Gburek, Jakub, ...

Cubilin is a 460-kDa protein functioning as an endocytic receptor for intrinsic factor vitamin B12 complex in the intestine and as a receptor for apolipoprotein A1 and albumin reabsorption in the...

Effect of Chlamydia trachomatis Infection and Subsequent Tumor Necrosis Factor Alpha Secretion on Apoptosis in the Murine Genital Tract

Perfettini, Jean-Luc, Darville, Toni, Gachelin, Gabriel, Souque, Philippe, Huerre, Michel, Dautry-Varsat, Alice, ...

The pathology observed during Chlamydia infection is due initially to localized tissue damage caused by the infection itself, followed by deleterious host inflammatory responses that lead to...

Identification of Two Intracellular Mechanisms Leading to Reduced Expression of Oncoretrovirus Envelope Glycoproteins at the Cell Surface

Grange, Marie-Pierre, Blot, Vincent, Delamarre, Lelia, Bouchaert, Isabelle, Rocca, Anna, Dautry-Varsat, Alice, ...

All retrovirus glycoproteins have a cytoplasmic domain that plays several roles in virus replication. We have determined whether and how the cytoplasmic domains of oncoretrovirus glycoproteins...

Role of Bcl-2 Family Members in Caspase-Independent Apoptosis during Chlamydia Infection

Perfettini, Jean-Luc, Reed, John C., Israël, Nicole, Martinou, Jean-Claude, Dautry-Varsat, Alice, Ojcius, David M.

Infection with an obligate intracellular bacterium, the Chlamydia trachomatis lymphogranuloma venereum (LGV/L2) strain or the guinea pig inclusion conjunctivitis serovar of Chlamydia psittaci, leads...

Inhibition of Apoptosis by Gamma Interferon in Cells and Mice Infected with Chlamydia muridarum (the Mouse Pneumonitis Strain of Chlamydia trachomatis)

Perfettini, Jean-Luc, Darville, Toni, Dautry-Varsat, Alice, Rank, Roger G., Ojcius, David M.

The effect of gamma interferon (IFN-γ) on apoptosis due to infection by Chlamydia muridarum (the mouse pneumonitis strain of Chlamydia trachomatis) was studied in epithelial cells in culture and in...

Entry of the Lymphogranuloma Venereum Strain of Chlamydia trachomatis into Host Cells Involves Cholesterol-Rich Membrane Domains

Jutras, Isabelle, Abrami, Laurence, Dautry-Varsat, Alice

Chlamydiae are bacterial pathogens which develop strictly inside the epithelial cells of their hosts. The mechanism used by chlamydiae to enter cells is not well characterized; however, it is thought...

Over-Expression of Rififylin, a New RING Finger and FYVE-like Domain-containing Protein, Inhibits Recycling from the Endocytic Recycling Compartment

Coumailleau, Franck, Das, Vincent, Alcover, Andres, Raposo, Graça, Vandormael-Pournin, Sandrine, Le Bras, Stéphanie, ...

Endocytosed membrane components are recycled to the cell surface either directly from early/sorting endosomes or after going through the endocytic recycling compartment (ERC). Studying recycling...

Involvement of the Ubiquitin/Proteasome System in Sorting of the Interleukin 2 Receptor β Chain to Late Endocytic Compartments

Rocca, Anna, Lamaze, Christophe, Subtil, Agathe, Dautry-Varsat, Alice

Down-regulation of cell surface growth factor receptors plays a key role in the tight control of cellular responses. Recent reports suggest that the ubiquitin system, in addition to participating in...

Megalin-dependent cubilin-mediated endocytosis is a major pathway for the apical uptake of transferrin in polarized epithelia

Kozyraki, Renata, Fyfe, John, Verroust, Pierre J., Jacobsen, Christian, Dautry-Varsat, Alice, Gburek, Jakub, ...

Cubilin is a 460-kDa protein functioning as an endocytic receptor for intrinsic factor vitamin B12 complex in the intestine and as a receptor for apolipoprotein A1 and albumin reabsorption in the...

Effect of Chlamydia trachomatis Infection and Subsequent Tumor Necrosis Factor Alpha Secretion on Apoptosis in the Murine Genital Tract

Perfettini, Jean-Luc, Darville, Toni, Gachelin, Gabriel, Souque, Philippe, Huerre, Michel, Dautry-Varsat, Alice, ...

The pathology observed during Chlamydia infection is due initially to localized tissue damage caused by the infection itself, followed by deleterious host inflammatory responses that lead to...

Identification of Two Intracellular Mechanisms Leading to Reduced Expression of Oncoretrovirus Envelope Glycoproteins at the Cell Surface

Grange, Marie-Pierre, Blot, Vincent, Delamarre, Lelia, Bouchaert, Isabelle, Rocca, Anna, Dautry-Varsat, Alice, ...

All retrovirus glycoproteins have a cytoplasmic domain that plays several roles in virus replication. We have determined whether and how the cytoplasmic domains of oncoretrovirus glycoproteins...

Role of Bcl-2 Family Members in Caspase-Independent Apoptosis during Chlamydia Infection

Perfettini, Jean-Luc, Reed, John C., Israël, Nicole, Martinou, Jean-Claude, Dautry-Varsat, Alice, Ojcius, David M.

Infection with an obligate intracellular bacterium, the Chlamydia trachomatis lymphogranuloma venereum (LGV/L2) strain or the guinea pig inclusion conjunctivitis serovar of Chlamydia psittaci, leads...

Inhibition of Apoptosis by Gamma Interferon in Cells and Mice Infected with Chlamydia muridarum (the Mouse Pneumonitis Strain of Chlamydia trachomatis)

Perfettini, Jean-Luc, Darville, Toni, Dautry-Varsat, Alice, Rank, Roger G., Ojcius, David M.

The effect of gamma interferon (IFN-γ) on apoptosis due to infection by Chlamydia muridarum (the mouse pneumonitis strain of Chlamydia trachomatis) was studied in epithelial cells in culture and in...

Entry of the Lymphogranuloma Venereum Strain of Chlamydia trachomatis into Host Cells Involves Cholesterol-Rich Membrane Domains

Jutras, Isabelle, Abrami, Laurence, Dautry-Varsat, Alice

Chlamydiae are bacterial pathogens which develop strictly inside the epithelial cells of their hosts. The mechanism used by chlamydiae to enter cells is not well characterized; however, it is thought...

Over-Expression of Rififylin, a New RING Finger and FYVE-like Domain-containing Protein, Inhibits Recycling from the Endocytic Recycling Compartment

Coumailleau, Franck, Das, Vincent, Alcover, Andres, Raposo, Graça, Vandormael-Pournin, Sandrine, Le Bras, Stéphanie, ...

Endocytosed membrane components are recycled to the cell surface either directly from early/sorting endosomes or after going through the endocytic recycling compartment (ERC). Studying recycling...

RNAi Screen in Drosophila Cells Reveals the Involvement of the Tom Complex in Chlamydia Infection

Derré, Isabelle, Pypaert, Marc, Dautry-Varsat, Alice, Agaisse, Hervé

Chlamydia spp. are intracellular obligate bacterial pathogens that infect a wide range of host cells. Here, we show that C. caviae enters, replicates, and performs a complete developmental cycle in...

SNARE Protein Mimicry by an Intracellular Bacterium

Delevoye, Cédric, Nilges, Michael, Dehoux, Pierre, Paumet, Fabienne, Perrinet, Stéphanie, Dautry-Varsat, Alice, ...

Many intracellular pathogens rely on host cell membrane compartments for their survival. The strategies they have developed to subvert intracellular trafficking are often unknown, and SNARE proteins,...

Cortactin and dynamin are required for the clathrin-independent endocytosis of γc cytokine receptor

Sauvonnet, Nathalie, Dujeancourt, Annick, Dautry-Varsat, Alice

Endocytosis is critical for many cellular functions. We show that endocytosis of the common γc cytokine receptor is clathrin independent by using a dominant-negative mutant of Eps15 or RNA...

Distinct Subsets of CD1d-restricted T Cells Recognize Self-antigens Loaded in Different Cellular Compartments

Chiu, Ya-Hui, Jayawardena, Jayanthi, Weiss, Angela, Lee, Daniel, Park, Se-Ho, Dautry-Varsat, Alice, ...

Although recent studies have indicated that the major histocompatibility complex–like, β2-microglobulin–associated CD1 molecules might function to present a novel chemical class of antigens,...

AP-2/Eps15 Interaction Is Required for Receptor-mediated Endocytosis

Benmerah, Alexandre, Lamaze, Christophe, Bègue, Bernadette, Schmid, Sandra L., Dautry-Varsat, Alice, Cerf-Bensussan, Nadine

We have previously shown that the protein Eps15 is constitutively associated with the plasma membrane adaptor complex, AP-2, suggesting its possible role in endocytosis. To explore the role of Eps15...

An α-Helical Signal in the Cytosolic Domain of the Interleukin 2 Receptor β Chain Mediates Sorting Towards Degradation after Endocytosis

Subtil, Agathe, Delepierre, Muriel, Dautry-Varsat, Alice

High-affinity IL2 receptors consist of three components, the α, β, and γ chains that are associated in a noncovalent manner. Both the β and γ chains belong to the cytokine receptor superfamily....

Clathrin-independent endocytosis used by the IL-2 receptor is regulated by Rac1, Pak1 and Pak2

Grassart, Alexandre, Dujeancourt, Annick, Lazarow, Paul B, Dautry-Varsat, Alice, Sauvonnet, Nathalie

There are several endocytic pathways, which are either dependent on or independent of clathrin. This study focuses on a poorly characterized mechanism—clathrin- and caveolae-independent...