PARIS undergoes liquid–liquid phase separation and poly(ADP‐ribose)‐mediated solidification

Author:

Kang Hojin1234,Park Soojeong1,Jo Areum123ORCID,Mao Xiaobo23ORCID,Kumar Manoj23,Park Chi‐Hu5ORCID,Ahn Jee‐Yin46,Lee Yunjong16ORCID,Choi Jeong‐Yun16,Lee Yun‐Song16ORCID,Dawson Valina L2378,Dawson Ted M2389ORCID,Kam Tae‐In2310ORCID,Shin Joo‐Ho12346ORCID

Affiliation:

1. Department of Pharmacology Sungkyunkwan University School of Medicine Suwon South Korea

2. Neuroregeneration and Stem Cell Programs, Institute for Cell Engineering Johns Hopkins University School of Medicine Baltimore MD USA

3. Department of Neurology Johns Hopkins University School of Medicine Baltimore MD USA

4. Single Cell Network Research Center Sungkyunkwan University School of Medicine Suwon South Korea

5. Neurodegeneration Research Institute YEP Bio Co., Ltd. Anyang South Korea

6. Samsung Biomedical Research Institute, Samsung Medical Center Seoul South Korea

7. Department of Physiology Johns Hopkins University School of Medicine Baltimore MD USA

8. Solomon H. Snyder Department of Neuroscience Johns Hopkins University School of Medicine Baltimore MD USA

9. Department of Pharmacology and Molecular Sciences Johns Hopkins University School of Medicine Baltimore MD USA

10. Department of Brain and Cognitive Sciences Korea Advanced Institute of Science and Technology Daejeon South Korea

Abstract

AbstractZNF746 was identified as parkin‐interacting substrate (PARIS). Investigating its pathophysiological properties, we find that PARIS undergoes liquid–liquid phase separation (LLPS) and amorphous solid formation. The N‐terminal low complexity domain 1 (LCD1) of PARIS is required for LLPS, whereas the C‐terminal prion‐like domain (PrLD) drives the transition from liquid to solid phase. In addition, we observe that poly(ADP‐ribose) (PAR) strongly binds to the C‐terminus of PARIS near the PrLD, accelerating its LLPS and solidification. N‐Methyl‐N′‐nitro‐N‐nitrosoguanidine (MNNG)‐induced PAR formation leads to PARIS oligomerization in human iPSC‐derived dopaminergic neurons that is prevented by the PARP inhibitor, ABT‐888. Furthermore, SDS‐resistant PARIS species are observed in the substantia nigra (SN) of aged mice overexpressing wild‐type PARIS, but not with a PAR binding‐deficient PARIS mutant. PARIS solidification is also found in the SN of mice injected with preformed fibrils of α‐synuclein (α‐syn PFF) and adult mice with a conditional knockout (KO) of parkin, but not if α‐syn PFF is injected into mice deficient for PARP1. Herein, we demonstrate that PARIS undergoes LLPS and PAR‐mediated solidification in models of Parkinson's disease.

Funder

Korea Basic Science Institute

Publisher

Springer Science and Business Media LLC

Subject

Genetics,Molecular Biology,Biochemistry

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