TY - JOUR
T1 - Liposomes Bearing Non-Bilayer Phospholipid Arrangements Induce Specific IgG Anti-Lipid Antibodies by Activating NK1.1+, CD4+ T Cells in Mice
AU - Landa-Saldívar, Carla
AU - Reséndiz-Mora, Albany
AU - Sánchez-Barbosa, Sandra
AU - Sotelo-Rodríguez, Anahi
AU - Barrera-Aveleida, Giovanna
AU - Nevárez-Lechuga, Irene
AU - Galarce-Sosa, Iván
AU - Taniguchi-Ponciano, Keiko
AU - Del Rocío Cruz-Guzmán, Oriana
AU - Wong-Baeza, Isabel
AU - Escobar-Gutiérrez, Alejandro
AU - Baeza, Isabel
AU - Wong-Baeza, Carlos
N1 - Publisher Copyright:
© 2022 by the authors. Licensee MDPI, Basel, Switzerland.
PY - 2022/7
Y1 - 2022/7
N2 - Liposomes are artificial models of cellular membranes that are used as delivery systems for genes, drugs and protein antigens. We have previously used them to study the antigenic properties of their phospholipids. Here, we used them to induce the production of IgG anti-non-bilayer phospholipid arrangements (NPAs) antibodies in mice; these antibodies cause cell lysis and trigger a lupus-like disease in mice. We studied the mechanisms that lead to the production of these antibodies, and provide evidence that NK1.1+, CD4+ T cells respond to NPA-bearing liposomes and deliver the help required for specific B cell activation and antibody class-switching to IgG. We found increased numbers of IL-4-producing NK1.1+, CD4+ T cells in the secondary lymphoid organs of mice administered with NPAs, and these cells also expressed CD40L, which is required for B cell activation. Additionally, we isolated and purified NK1.1+, CD4+ T cells from spleens and determined that they over-expressed 40 genes, which are key players in inflammatory processes and B cell stimulation and have TRAF6 and UNC39B1 as key nodes in their network. These results show that liposomes are membrane models that can be used to analyze the immunogenicity of lipids.
AB - Liposomes are artificial models of cellular membranes that are used as delivery systems for genes, drugs and protein antigens. We have previously used them to study the antigenic properties of their phospholipids. Here, we used them to induce the production of IgG anti-non-bilayer phospholipid arrangements (NPAs) antibodies in mice; these antibodies cause cell lysis and trigger a lupus-like disease in mice. We studied the mechanisms that lead to the production of these antibodies, and provide evidence that NK1.1+, CD4+ T cells respond to NPA-bearing liposomes and deliver the help required for specific B cell activation and antibody class-switching to IgG. We found increased numbers of IL-4-producing NK1.1+, CD4+ T cells in the secondary lymphoid organs of mice administered with NPAs, and these cells also expressed CD40L, which is required for B cell activation. Additionally, we isolated and purified NK1.1+, CD4+ T cells from spleens and determined that they over-expressed 40 genes, which are key players in inflammatory processes and B cell stimulation and have TRAF6 and UNC39B1 as key nodes in their network. These results show that liposomes are membrane models that can be used to analyze the immunogenicity of lipids.
KW - NK1.1, CD4 T cells
KW - anti-lipid antibodies
KW - liposomes
KW - non-bilayer phospholipid arrangements
KW - systemic lupus erythematosus
UR - http://www.scopus.com/inward/record.url?scp=85132980677&partnerID=8YFLogxK
U2 - 10.3390/membranes12070643
DO - 10.3390/membranes12070643
M3 - Artículo
C2 - 35877846
AN - SCOPUS:85132980677
SN - 2077-0375
VL - 12
JO - Membranes
JF - Membranes
IS - 7
M1 - 643
ER -