Glucosylsphingosine but not Saposin C, is the target antigen in Gaucher disease-associated gammopathy.
Glucosylsphingosine but not Saposin C, is the target antigen in Gaucher disease-associated gammopathy.
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DOI:
10.1016/j.ymgme.2020.01.009
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发表时间:
2020-04
影响因子:
3.8
通讯作者:
Mistry PK
中科院分区:
文献类型:
--
作者:
Nair S;Bar N;Xu ML;Dhodapkar M;Mistry PK
In Gaucher disease type 1 (GD1), genetic deficiency of lysosomal glucocerebrosidase results in the accumulation of glucosylceramide and glucosylsphingosine (GlcSph), that underlie chronic lipid-mediated metabolic inflammation. An important age-related phenotype is high risk of monoclonal gammopathy (MG), including multiple myeloma. We identified GlcSph, a pathological lyso-sphingolipid exclusively elevated in GD, as a mediator of B cell activation and as an antigenic target for GD1-associated MG. Saposin C (SapC), is a lipid-binding protein and activator of lysosomal glucocerebrosidase, which when mutated, cause a rare variant of GD. Sera of GD1 patients with MG of diverse immunoglobulin types were compared to GD patients without gammopathy for reactivity against GlcSph and SapC. We show reactivity of clonal immunoglobulin in GD1 to GlcSph but not to SapC. In two patients with GD1 and gammopathy, GlcSph-reduction therapy with eliglustat resulted in reduction in clonal Ig. Together, our data show that GlcSph but not SapC is the antigenic target in GD1-associated MG and that therapy aimed at reducing the levels of immunogenic lipid resulted in reduction of clonal immunoglobulin in vivo.
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影响因子:
12.8
作者:
Mistry PK;Lukina E;Ben Turkia H;Shankar SP;Baris H;Ghosn M;Mehta A;Packman S;Pastores G;Petakov M;Assouline S;Balwani M;Danda S;Hadjiev E;Ortega A;Gaemers SJM;Tayag R;Peterschmitt MJ
通讯作者:
Peterschmitt MJ
DOI:
10.1056/nejmoa1508808
发表时间:
2016-02-11
期刊:
The New England journal of medicine
影响因子:
--
作者:
Nair S;Branagan AR;Liu J;Boddupalli CS;Mistry PK;Dhodapkar MV
通讯作者:
Dhodapkar MV
影响因子:
12.8
作者:
Taddei, Tamar H.;Kacena, Katherine A.;Mistry, Pramod K.
通讯作者:
Mistry, Pramod K.
影响因子:
3.5
作者:
de Fost, M.;Out, T. A.;de Wilde, F. A.;Tjin, E. P. M.;Pals, S. T.;van Oers, M. H. J.;Boot, R. G.;Aerts, J. F. M. G.;Maas, M.;vom Dahl, S.;Hollak, C. E. M.
通讯作者:
Hollak, C. E. M.
影响因子:
12.8
作者:
MARTI, GE;RYAN, ET;GRALNICK, HR
通讯作者:
GRALNICK, HR