PMID- 32393629 OWN - NLM STAT- MEDLINE DCOM- 20200818 LR - 20240328 IS - 1091-6490 (Electronic) IS - 0027-8424 (Print) IS - 0027-8424 (Linking) VI - 117 IP - 21 DP - 2020 May 26 TI - TDP-43 dysfunction restricts dendritic complexity by inhibiting CREB activation and altering gene expression. PG - 11760-11769 LID - 10.1073/pnas.1917038117 [doi] AB - Amyotrophic lateral sclerosis (ALS) and frontotemporal dementia (FTD) are two related neurodegenerative diseases that present with similar TDP-43 pathology in patient tissue. TDP-43 is an RNA-binding protein which forms aggregates in neurons of ALS and FTD patients as well as in a subset of patients diagnosed with other neurodegenerative diseases. Despite our understanding that TDP-43 is essential for many aspects of RNA metabolism, it remains obscure how TDP-43 dysfunction contributes to neurodegeneration. Interestingly, altered neuronal dendritic morphology is a common theme among several neurological disorders and is thought to precede neurodegeneration. We previously found that both TDP-43 overexpression (OE) and knockdown (KD) result in reduced dendritic branching of cortical neurons. In this study, we used TRIBE (targets of RNA-binding proteins identified by editing) as an approach to identify signaling pathways that regulate dendritic branching downstream of TDP-43. We found that TDP-43 RNA targets are enriched for pathways that signal to the CREB transcription factor. We further found that TDP-43 dysfunction inhibits CREB activation and CREB transcriptional output, and restoring CREB signaling rescues defects in dendritic branching. Finally, we demonstrate, using RNA sequencing, that TDP-43 OE and KD cause similar changes in the abundance of specific messenger RNAs, consistent with their ability to produce similar morphological defects. Our data therefore provide a mechanism by which TDP-43 dysfunction interferes with dendritic branching, and may define pathways for therapeutic intervention in neurodegenerative diseases. FAU - Herzog, Josiah J AU - Herzog JJ AD - Department of Biology, Brandeis University, Waltham, MA 02453. AD - Volen Center for Complex Systems, Brandeis University, Waltham, MA 02453. FAU - Xu, Weijin AU - Xu W AUID- ORCID: 0000-0003-1634-5241 AD - Department of Biology, Brandeis University, Waltham, MA 02453. AD - Howard Hughes Medical Institute, Brandeis University, Waltham, MA 02453. FAU - Deshpande, Mugdha AU - Deshpande M AD - Department of Biology, Brandeis University, Waltham, MA 02453. AD - Volen Center for Complex Systems, Brandeis University, Waltham, MA 02453. FAU - Rahman, Reazur AU - Rahman R AD - Department of Biology, Brandeis University, Waltham, MA 02453. AD - Howard Hughes Medical Institute, Brandeis University, Waltham, MA 02453. FAU - Suib, Hannah AU - Suib H AD - Department of Biology, Brandeis University, Waltham, MA 02453. AD - Volen Center for Complex Systems, Brandeis University, Waltham, MA 02453. FAU - Rodal, Avital A AU - Rodal AA AUID- ORCID: 0000-0002-2051-8304 AD - Department of Biology, Brandeis University, Waltham, MA 02453. FAU - Rosbash, Michael AU - Rosbash M AD - Department of Biology, Brandeis University, Waltham, MA 02453; rosbash@brandeis.edu paradis@brandeis.edu. AD - Howard Hughes Medical Institute, Brandeis University, Waltham, MA 02453. FAU - Paradis, Suzanne AU - Paradis S AD - Department of Biology, Brandeis University, Waltham, MA 02453; rosbash@brandeis.edu paradis@brandeis.edu. AD - Volen Center for Complex Systems, Brandeis University, Waltham, MA 02453. LA - eng GR - R01 NS065856/NS/NINDS NIH HHS/United States GR - R56 NS065856/NS/NINDS NIH HHS/United States GR - R01 NS103967/NS/NINDS NIH HHS/United States GR - R01 DA037721/DA/NIDA NIH HHS/United States GR - R01 AG052465/AG/NIA NIH HHS/United States PT - Journal Article PT - Research Support, N.I.H., Extramural PT - Research Support, Non-U.S. Gov't DEP - 20200511 PL - United States TA - Proc Natl Acad Sci U S A JT - Proceedings of the National Academy of Sciences of the United States of America JID - 7505876 RN - 0 (CREB1 protein, human) RN - 0 (Cyclic AMP Response Element-Binding Protein) RN - 0 (DNA-Binding Proteins) RN - 0 (RNA, Messenger) RN - 0 (TARDBP protein, human) SB - IM MH - Animals MH - *Cyclic AMP Response Element-Binding Protein/genetics/metabolism MH - *DNA-Binding Proteins/genetics/metabolism MH - *Dendrites/metabolism/pathology MH - Gene Expression Regulation/*genetics MH - HEK293 Cells MH - Humans MH - RNA, Messenger/metabolism MH - Rats MH - *Signal Transduction/genetics/physiology MH - TDP-43 Proteinopathies PMC - PMC7260973 OTO - NOTNLM OT - CREB OT - TDP-43 OT - TRIBE COIS- Competing interest statement: W.X. and M.R. declare that a PCT patent application (PCT patent application no. PCT/US2016/054525) has been filed on the TRIBE technique. EDAT- 2020/05/13 06:00 MHDA- 2020/08/19 06:00 PMCR- 2020/11/11 CRDT- 2020/05/13 06:00 PHST- 2020/05/13 06:00 [pubmed] PHST- 2020/08/19 06:00 [medline] PHST- 2020/05/13 06:00 [entrez] PHST- 2020/11/11 00:00 [pmc-release] AID - 1917038117 [pii] AID - 201917038 [pii] AID - 10.1073/pnas.1917038117 [doi] PST - ppublish SO - Proc Natl Acad Sci U S A. 2020 May 26;117(21):11760-11769. doi: 10.1073/pnas.1917038117. Epub 2020 May 11.