Molecular Oncology: Hijacking the BAF complex: the mechanistic interplay of ARID1A and EWS::FLI1 in Ewing sarcoma (Libich Lab)

October 3, 2024

Erich J. Sohn, David S. Libich Abstract Ewing sarcoma, an aggressive pediatric cancer, is driven by the EWS::FLI1 fusion protein, which disrupts gene expression by hijacking the BAF chromatin remodeling complex. Central to this mechanism is the formation of biomolecular condensates, mediated by the prion-like domains (PrLDs) of EWS and ARID1A, a core BAF subunit. ARID1A serves [...]

Nature: Promotion of DNA end resection by BRCA1–BARD1 in homologous recombination (Sung, Libich)

September 12, 2024

Sameer Salunkhe, James M. Daley, Hardeep Kaur, Nozomi Tomimatsu, Chaoyou Xue, Vivek B. Raina, Angela M. Jasper, Cody M. Rogers, Wenjing Li, Shuo Zhou, Rahul Mojidra, Youngho Kwon, Qingming Fang, Jae-Hoon Ji, Aida Badamchi Shabestari, O’Taveon Fitzgerald, Hoang Dinh, Bipasha Mukherjee, Amyn A. Habib, Robert Hromas, Alexander V. Mazin, Elizabeth V. Wasmuth, Shaun K. Olsen, [...]

Journal of the National Cancer Institute: Integrative multi-omics characterization of hepatocellular carcinoma in Hispanic patients (Zheng, Chen & Lai Labs)

September 4, 2024

Debodipta Das, PhD, Xiaojing Wang, PhD, Yu-Chiao Chiu, PhD, Hakim Bouamar, PhD, Francis E Sharkey, MD, Jorge E Lopera, MD, Zhao Lai, PhD, Susan T Weintraub, PhD, Xianlin Han, PhD, Yi Zou, MS, Hung-I H Chen, PhD, Carla R Zeballos Torrez, MD, PhD, Xiang Gu, PhD, Matyas Cserhati, PhD, Joel E Michalek, PhD, Glenn A Halff, MD, Yidong Chen, PhD, Siyuan Zheng, PhD, Francisco G Cigarroa, MD, Lu-Zhe Sun, Ph Abstract Background The [...]

eLife: SERBP1 interacts with PARP1 and is Present in PARylation-Dependent Protein Complexes Regulating Splicing, Cell Division, and Ribosome Biogenesis (Penalva, Libich, et al)

July 3, 2024

Kira Breunig Xiufen Lei Mauro Montalbano Gabriela D. A. Guardia Shiva Ostadrahimi Victoria Alers Adam Kosti Jennifer Chiou Nicole Klein Corina Vinarov Lily Wang Mujia Li Weidan Song W. Lee Kraus David S. Libich Stefano Tiziani Susan T. Weintraub Pedro A. F. Galante Luiz O. F. Penalva Abstract RNA binding proteins (RBPs) containing intrinsically disordered [...]

Journal of the American Chemical Society: ights into Molecular Diversity within the FUS/EWS/TAF15 Protein Family: Unraveling Phase Separation of the N-Terminal Low-Complexity Domain from RNA-Binding Protein EWS (Libich Lab)

April 8, 2024

Abstract The FET protein family, comprising FUS, EWS, and TAF15, plays crucial roles in mRNA maturation, transcriptional regulation, and DNA damage response. Clinically, they are linked to Ewing family tumors and neurodegenerative diseases such as amyotrophic lateral sclerosis. The fusion protein EWS::FLI1, the causative mutation of Ewing sarcoma, arises from a genomic translocation that fuses [...]

ELife: Defining function of wild-type and three patient specific TP53 mutations in a zebrafish model of embryonal rhabdomyosarcoma (Ignatius Lab, Houghton Lab, Libich Lab, Chen, Tomlinson)

June 2, 2023

Jiangfei Chen Kunal Baxi Amanda E Lipsitt Nicole Rae Hensch Long Wang Prethish Sreenivas Paulomi Modi Xiang Ru Zhao Antoine Baudin Daniel G Robledo Abhik Bandyopadhyay Aaron Sugalski Anil K Challa Dias Kurmashev Andrea R Gilbert Gail E Tomlinson Peter Houghton Yidong Chen Madeline N Hayes Eleanor Y Chen David S Libich Myron S Ignatius [...]

Biomolecules: Enhancing the Conformational Stability of the cl-Par-4 Tumor Suppressor via Site-Directed Mutagenesis (Libich Lab)

May 17, 2023

Samjhana Pandey Krishna K. Raut Andrea M. Clark  Antoine Baudin  Lamya Djemri  David S. Libich  Komala Ponniah Steven M. Pascal Abstract Intrinsically disordered proteins play important roles in cell signaling, and dysregulation of these proteins is associated with several diseases. Prostate apoptosis response-4 (Par-4), an approximately 40-kilodalton proapoptotic tumor suppressor, is a predominantly intrinsically disordered [...]

Biopolymers: Biochemical and biophysical characterization of the nucleic acid binding properties of the RNA/DNA binding protein EWS

March 21, 2023

Emily E. Selig,  Roohi Bhura,  Matthew R. White,  Shivani Akula,  Renee D. Hoffman,  Carmel N. Tovar,  Xiaoping Xu,  Rachell E. Booth,  David S. Libich Abstract EWS is a member of the FET family of RNA/DNA binding proteins that regulate crucial phases of nucleic acid metabolism. EWS comprises an N-terminal low-complexity domain (LCD) and a C-terminal RNA-binding domain (RBD). The RBD is further divided [...]

BioPhysics Journal: Unraveling the phase separation of EWS low complexity domain using molecular dynamics simulations (Libich Lab)

March 3, 2023

Kandarp A. Sojitra 1, Courtney Johnson 2 3, Erich Sohn 2 3, David Libich 2 3, Jeetain Mittal 1 EWS, an RNA-binding protein, is responsible for gene expression, cell signaling, RNA processing, and transport. It is a member of the FET (FUS, EWS, TAF15) family, whose derailed phase separation is known to cause many neurodegenerative [...]

Structure: Order and disorder bound together in SARS-CoV-2 Nsp1 suppress host translation (Libich Lab)

February 6, 2023

David S Libich 1, Antoine Baudin 2 Abstract In this issue of Structure, Wang et al. investigate the interplay between folded and disordered regions of the SARS-CoV-2 non-structural protein 1 (Nsp1) that promotes the suppression of host protein translation. Their investigation will lead to novel avenues to target critical viral functions necessary for host immune-response suppression therapeutically. Read [...]