Single-cell RNA-seq reveals cell type–specific molecular and genetic associations to lupus

Author:

Perez Richard K.1ORCID,Gordon M. Grace2345ORCID,Subramaniam Meena24ORCID,Kim Min Cheol13467ORCID,Hartoularos George C.234ORCID,Targ Sasha126,Sun Yang34ORCID,Ogorodnikov Anton34,Bueno Raymund34ORCID,Lu Andrew8ORCID,Thompson Mike9ORCID,Rappoport Nadav10ORCID,Dahl Andrew11ORCID,Lanata Cristina M.312ORCID,Matloubian Mehrdad312ORCID,Maliskova Lenka413ORCID,Kwek Serena S.14ORCID,Li Tony14ORCID,Slyper Michal15ORCID,Waldman Julia15ORCID,Dionne Danielle15ORCID,Rozenblatt-Rosen Orit15ORCID,Fong Lawrence14ORCID,Dall’Era Maria1ORCID,Balliu Brunilda16ORCID,Regev Aviv151718ORCID,Yazdany Jinoos3ORCID,Criswell Lindsey A.3412,Zaitlen Noah19ORCID,Ye Chun Jimmie34121320ORCID

Affiliation:

1. School of Medicine, University of California, San Francisco, CA, USA.

2. Biological and Medical Informatics Graduate Program, University of California, San Francisco, CA, USA.

3. Division of Rheumatology, Department of Medicine, University of California, San Francisco, CA, USA.

4. Institute for Human Genetics, University of California, San Francisco, CA, USA.

5. Department of Bioengineering and Therapeutic Sciences, University of California, San Francisco, CA, USA.

6. Medical Scientist Training Program, University of California, San Francisco, CA, USA.

7. UC Berkeley–UCSF Graduate Program in Bioengineering, San Francisco, CA, USA.

8. UCLA-Caltech Medical Scientist Training Program, Los Angeles, CA, USA.

9. Department of Computer Science, University of California, Los Angeles, CA, USA.

10. Department of Software and Information Systems Engineering, Ben-Gurion University of the Negev, Be’er Sheva, Israel.

11. Section of Genetic Medicine, Department of Medicine, University of Chicago, Chicago, IL 60637, USA.

12. Rosalind Russell/Ephraim P. Engleman Rheumatology Research Center, University of California, San Francisco, CA, USA.

13. Department of Epidemiology and Biostatistics, University of California, San Francisco, CA, USA.

14. Division of Hematology/Oncology, Department of Medicine, University of California, San Francisco, CA, USA.

15. Klarman Cell Observatory, Broad Institute, Cambridge, MA, USA.

16. Department of Computational Medicine, David Geffen School of Medicine, University of California, Los Angeles, CA, USA.

17. Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, MA 02139, USA.

18. Howard Hughes Medical Institute, Department of Biology, Massachusetts Institute of Technology, Cambridge, MA 02139, USA.

19. Center for Neurobehavioral Genetics, Semel Institute for Neuroscience and Human Behavior, University of California, Los Angeles, CA, USA.

20. Parker Institute for Cancer Immunotherapy, San Francisco, CA, USA.

Abstract

Systemic lupus erythematosus (SLE) is a heterogeneous autoimmune disease. Knowledge of circulating immune cell types and states associated with SLE remains incomplete. We profiled more than 1.2 million peripheral blood mononuclear cells (162 cases, 99 controls) with multiplexed single-cell RNA sequencing (mux-seq). Cases exhibited elevated expression of type 1 interferon–stimulated genes (ISGs) in monocytes, reduction of naïve CD4 + T cells that correlated with monocyte ISG expression, and expansion of repertoire-restricted cytotoxic GZMH + CD8 + T cells. Cell type–specific expression features predicted case-control status and stratified patients into two molecular subtypes. We integrated dense genotyping data to map cell type–specific cis–expression quantitative trait loci and to link SLE-associated variants to cell type–specific expression. These results demonstrate mux-seq as a systematic approach to characterize cellular composition, identify transcriptional signatures, and annotate genetic variants associated with SLE.

Publisher

American Association for the Advancement of Science (AAAS)

Subject

Multidisciplinary

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