Abstract
Human genetic factors predispose to tuberculosis (TB). We studied 7.6 million genetic variants in 5,530 people with pulmonary TB and in 5,607 healthy controls. In the combined analysis of these subjects and the follow-up cohort (15,087 TB patients and controls altogether), we found an association between TB and variants located in introns of the ASAP1 gene on chromosome 8q24 (P = 2.6 × 10 -11 for rs4733781; P = 1.0 × 10 -10 for rs10956514). Dendritic cells (DCs) showed high ASAP1 expression that was reduced after Mycobacterium tuberculosis infection, and rs10956514 was associated with the level of reduction of ASAP1 expression. The ASAP1 protein is involved in actin and membrane remodeling and has been associated with podosomes. The ASAP1-depleted DCs showed impaired matrix degradation and migration. Therefore, genetically determined excessive reduction of ASAP1 expression in M. tuberculosis-infected DCs may lead to their impaired migration, suggesting a potential mechanism of predisposition to TB.
| Original language | English |
|---|---|
| Pages (from-to) | 523-527 |
| Number of pages | 5 |
| Journal | Nature Genetics |
| Volume | 47 |
| Issue number | 5 |
| DOIs | |
| Publication status | Published - 30 May 2015 |
Bibliographical note
Funding Information:The study was supported by Wellcome Trust grants 088838/Z/09/Z (to S.N., J.C.B., F.D.) and 095198/Z/10/Z (to S.N.), EU Framework Programme 7 Collaborative grant 201483 (to S.N., F.D., R.D.H., P.N.), European Research Council Starting grant 260477 (to S.N.), and Royal Society grants UF0763346 (to S.N.) and RG090638 (to S.N.). S.N. is a Wellcome Trust Senior Research Fellow in Basic Biomedical Science and is also supported by the National Institute for Health Research (NIHR) Cambridge Biomedical Research Centre. This study makes use of data generated by the Wellcome Trust Case-Control Consortium. A full list of the investigators who contributed to the generation of the data is available from www.wtccc.org.uk. Funding for the project was provided by the Wellcome Trust under award 076113, 085475 and 090355.