To certain infections: 26 (n = 22) of Finnish patients with recurrent respiratory infections vs.14 (n = 10) of healthy controls (p = 0.048) had C4A deficiency. Not unexpectedly, 50 of the patients with C4A deficiency had MBL concentrations .1.5 mg/ml, the mean human MBL serum concentration but notably, more than one-third had very high MBL levels (.4 mg/ ml). Further clinical studies are requir
To certain infections: 26 (n = 22) of Finnish patients with recurrent respiratory infections vs.14 (n = 10) of healthy controls (p = 0.048) had C4A deficiency. Not unexpectedly, 50 of the patients with C4A deficiency had MBL concentrations .1.5 mg/ml, the mean human MBL serum concentration but notably, more than one-third had very high MBL levels (.4 mg/ ml). Further clinical studies are requir
Particles mixed withFigure 8. Proposed model of MBL-mediated macropinocytosis of EBOV. MBL carbohydrate recognition domains (CRD) bind to highly glycosylated mucin-rich regions of EBOV GP and the MBL-virion complex is presented to the cell surface. Then MBL binds to cognate cellular receptors, such as C1QBP or calreticulin [6] via MBL collagenous stalks. In this manner, MBL concentrates virus at t
In part, the evolutionary selection of MBL mutant haplotypes that encode low or intermediate MBL serum levels in the majority of humans.Supporting InformationFigure S1 RhMBL enhances HIV-EBOV GP infection in a calcium-dependent manner. We preincubated HIVEBOV-GP virion-like particles with rhMBL in 5 MBL-deficient serum and Veronal-buffered saline with or without calcium supplementation. *, ** and
In part, the evolutionary selection of MBL mutant haplotypes that encode low or intermediate MBL serum levels in the majority of humans.Supporting InformationFigure S1 RhMBL enhances HIV-EBOV GP infection in a calcium-dependent manner. We preincubated HIVEBOV-GP virion-like particles with rhMBL in 5 MBL-deficient serum and Veronal-buffered saline with or without calcium supplementation. *, ** and
Exposed to autoradiography film. High-mannose moieties were preserved only in untreated virus confirming that PNGase F and endo H effectively cleaved high-mannose residues on GPs of HIV-EBOV virion-like particles. (EPS) Figure S4 Thermolysin treatment of HIV-EBOV GP abrogates enhancement of infection by rhMBL in a thermolysin-concentration dependent manner. We preincubated HIV-EBOV GP virion-like
Ge activity .500 U/mL (13/21 vs 1/ 14, p,0.005) compared with MBL2 O/O or O/A haplotypes (O refers to B,C or D alleles). (EPS) Figure S3 Endoglycosidases cleave N-linked glycans in HIV-EBOV GP. We preincubated HIV-EBOZ GP virion-like particles (12,000 pg/ml) with PNGase F or endo H (10,000 U/ml each) diluted in DMEM or with DMEM alone for 1 hour at 37uC. Viruses then underwent gel electrophoresis;
Ge activity .500 U/mL (13/21 vs 1/ 14, p,0.005) compared with MBL2 O/O or O/A haplotypes (O refers to B,C or D alleles). (EPS) Figure S3 Endoglycosidases cleave N-linked glycans in HIV-EBOV GP. We preincubated HIV-EBOZ GP virion-like particles (12,000 pg/ml) with PNGase F or endo H (10,000 U/ml each) diluted in DMEM or with DMEM alone for 1 hour at 37uC. Viruses then underwent gel electrophoresis;