Abstract:
:Toll-like receptor (TLR) 2/1 signalling is linked to autophagy through transcriptional actions of the 1,25-dihydroxyvitamin D3 (1,25(OH)2D3)-vitamin D receptor (VDR) complex. Population-specific effects have been reported for TLR2/1-VDR signalling. We hypothesized that population effects extend to autophagy and are influenced by vitamin D status. Serum 25(OH)D3 of healthy South Africans (Black individuals n = 10, White individuals n = 10) was quantified by LC-MS/MS. Primary monocytes-macrophages were supplemented in vitro with 1,25(OH)2D3 and stimulated with the lipoprotein Pam3CysSerLys4. TLR2, VDR, hCAP18, Beclin1, LC3-IIB, cytokines and CYP24A1 mRNA were quantified by flow cytometry and RT-qPCR, respectively. Black individuals showed significantly lower overall cumulative LC3-IIB (P < 0.010), but higher Beclin1, VDR, IL6 and TNFA (P < 0.050) than White individuals. 1,25(OH)2D3 enhanced autophagic flux in monocytes-macrophages from Black individuals upon TLR2/1 stimulation and strengthened autophagy in 25(OH)D3 deficient individuals (independent cohort, n = 20). These findings support population-directed vitamin D supplementation.
journal_name
Cell Immunoljournal_title
Cellular immunologyauthors
Abhimanyu,Meyer V,Jones BR,Bornman Ldoi
10.1016/j.cellimm.2020.104082subject
Has Abstractpub_date
2020-06-01 00:00:00pages
104082eissn
0008-8749issn
1090-2163pii
S0008-8749(19)30487-3journal_volume
352pub_type
杂志文章abstract::A low culture temperature of 27 degrees C inhibited mouse primary in vitro anti-hapten plaque-forming cell responses to a thymus-dependent (TD) antigen (Ag) (trinitrophenyl-keyhole limpet hemocyanin, TNP-KLH). In contrast, the magnitudes of secondary responses to TNP-KLH or primary responses to a thymus-independent (T...
journal_title:Cellular immunology
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journal_title:Cellular immunology
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journal_title:Cellular immunology
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journal_title:Cellular immunology
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journal_title:Cellular immunology
pub_type: 杂志文章
doi:10.1006/cimm.1996.0242
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journal_title:Cellular immunology
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journal_title:Cellular immunology
pub_type: 杂志文章
doi:10.1016/0008-8749(86)90050-x
更新日期:1986-07-01 00:00:00
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journal_title:Cellular immunology
pub_type: 杂志文章
doi:10.1006/cimm.1995.1059
更新日期:1995-04-15 00:00:00
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journal_title:Cellular immunology
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journal_title:Cellular immunology
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journal_title:Cellular immunology
pub_type: 杂志文章
doi:10.1016/0008-8749(89)90207-4
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journal_title:Cellular immunology
pub_type: 杂志文章
doi:10.1016/0008-8749(91)90347-e
更新日期:1991-04-15 00:00:00
abstract::A recombinant form of human soluble CD23 (sCD23), the low affinity receptor for IgE (FcepsilonRII), was produced by PCR cloning the lectin-binding domain sequence into a bacterial expression vector. After renaturation and purification, the sCD23 bound IgE and divalent metal ions, indicating its activity. The recombina...
journal_title:Cellular immunology
pub_type: 杂志文章
doi:10.1016/j.cellimm.2005.06.006
更新日期:2005-04-01 00:00:00
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journal_title:Cellular immunology
pub_type: 杂志文章
doi:10.1006/cimm.1995.1084
更新日期:1995-05-01 00:00:00
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journal_title:Cellular immunology
pub_type: 杂志文章
doi:10.1006/cimm.1994.1048
更新日期:1994-02-01 00:00:00
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journal_title:Cellular immunology
pub_type: 杂志文章
doi:10.1016/0008-8749(86)90268-6
更新日期:1986-03-01 00:00:00
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journal_title:Cellular immunology
pub_type: 杂志文章
doi:10.1016/j.cellimm.2005.07.007
更新日期:2005-06-01 00:00:00
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journal_title:Cellular immunology
pub_type: 杂志文章
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journal_title:Cellular immunology
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更新日期:2016-04-01 00:00:00
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journal_title:Cellular immunology
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journal_title:Cellular immunology
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journal_title:Cellular immunology
pub_type: 杂志文章
doi:10.1016/0008-8749(87)90129-8
更新日期:1987-12-01 00:00:00
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journal_title:Cellular immunology
pub_type: 杂志文章,评审
doi:10.1016/j.cellimm.2004.02.004
更新日期:2004-02-01 00:00:00
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journal_title:Cellular immunology
pub_type: 杂志文章
doi:10.1016/0008-8749(85)90081-4
更新日期:1985-08-01 00:00:00
abstract::Recent studies have indicated that Macrophage migration inhibitory factor (MIF) plays an important role in the prevention and treatment of asthma. However the role of MIF in airway inflammation and airway epithelial barrier disruption in house dust mite (HDM)-induced asthma has not been addressed. We hypothesized that...
journal_title:Cellular immunology
pub_type: 杂志文章
doi:10.1016/j.cellimm.2019.103965
更新日期:2020-01-01 00:00:00
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journal_title:Cellular immunology
pub_type: 杂志文章
doi:10.1016/0008-8749(90)90050-2
更新日期:1990-07-01 00:00:00
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journal_title:Cellular immunology
pub_type: 杂志文章
doi:10.1016/0008-8749(92)90137-e
更新日期:1992-04-15 00:00:00
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journal_title:Cellular immunology
pub_type: 杂志文章
doi:10.1016/j.cellimm.2019.104022
更新日期:2020-02-01 00:00:00
abstract::We examined the effects of a rare sugar, D-allose, which is 6-carbon monosaccharide, on endocytosis and T cell stimulation by dendritic cells (DCs). The endocytosis of BCG-anti-BCG immune complexes by DCs markedly decreased in D-allose-containing medium. Co-culture with T cells (mixed leukocyte reaction, MLR) of DCs, ...
journal_title:Cellular immunology
pub_type: 杂志文章
doi:10.1016/j.cellimm.2011.06.015
更新日期:2011-01-01 00:00:00
abstract::The majority of autoimmune diseases have a strong gender bias, affecting mostly females. Gender-specific factors like sex-hormones, the presence or absence of a second X chromosome, and gender-specific gut microbiota may contribute to this bias. In this review we will discuss the role of the X chromosome encoded toll-...
journal_title:Cellular immunology
pub_type: 杂志文章,评审
doi:10.1016/j.cellimm.2014.12.002
更新日期:2015-04-01 00:00:00