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ALS-associated mutations in TDP-43 increase its stability and promote TDP-43 complexes with FUS/TLS

Open access
Ling, Shuo-Chien, Albuquerque, Claudio P., Han, Joo Seok, Lagier-Tourenne, Clotilde, Tokunaga, Seiya, Zhou, Huilin, Cleveland, Don W.·2010·Proceedings of the National Academy of Sciences

Abstract

Dominant mutations in two functionally related DNA/RNA-binding proteins, trans-activating response region (TAR) DNA-binding protein with a molecular mass of 43 KDa (TDP-43) and fused in sarcoma/translocation in liposarcoma (FUS/TLS), cause an inherited form of ALS that is accompanied by nuclear and cytoplasmic aggregates containing TDP-43 or FUS/TLS. Using isogenic cell lines expressing wild-type or ALS-linked TDP-43 mutants and fibroblasts from a human patient, pulse-chase radiolabeling of newly synthesized proteins is used to determine, surprisingly, that ALS-linked TDP-43 mutant polypeptides are more stable than wild-type TDP-43. Tandem-affinity purification and quantitative mass spectrometry are used to identify TDP-43 complexes not only with heterogeneous nuclear ribonucleoproteins family proteins, as expected, but also with components of Drosha microprocessor complexes, consistent with roles for TDP-43 in both mRNA processing and microRNA biogenesis. A fraction of TDP-43 is shown to be complexed with FUS/TLS, an interaction substantially enhanced by TDP-43 mutants. Taken together, abnormal stability of mutant TDP-43 and its enhanced binding to normal FUS/TLS imply a convergence of pathogenic pathways from mutant TDP-43 and FUS/TLS in ALS.

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Metadata

Authors
Ling, S.-C., Albuquerque, C. P., Han, J. S., Lagier-Tourenne, C., Tokunaga, S., Zhou, H., & Cleveland, D. W.
Venue
Proceedings of the National Academy of Sciences
Published
2010-07-12
Volume
107
Issue
30
Pages
13318-13323
ISSN
  • 0027-8424 (ISSN-L)
  • 1091-6490
OpenAlex
W2117428493
Cited by
449
References
9
FWCI
19.80
Type
journal article
Language
en
Open access
bronze

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CoChat. (2026). Citation check: ALS-associated mutations in TDP-43 increase its stability and promote TDP-43 complexes with FUS/TLS. https://app.cochat.ai/papers/10.1073/pnas.1008227107
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Ling, S.-C., Albuquerque, C. P., Han, J. S., Lagier-Tourenne, C., Tokunaga, S., Zhou, H., & Cleveland, D. W. (2010). ALS-associated mutations in TDP-43 increase its stability and promote TDP-43 complexes with FUS/TLS. Proceedings of the National Academy of Sciences. https://doi.org/10.1073/pnas.1008227107

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