Publications

Zhao S, Palma-Chaundler CS, Engel CM, Cordes J, Nixdorf D, Luo MY, Kaya S, Suryo Rahmanto A, van den Heuvel D, Mackens-Kiani T, Weickert P, Lam S, Gupta V, Philippou-Massier J, Bagarić I, Bohlen J, Hewitt G, Luijsterburg MS, Beckmann R, Beli P, Nedialkova DD, Carnie CJ, Subklewe M, Jackson SP, Stingele J.

Molecular Cell 2026 Mar 23:S1097-2765(26)00138-3. Online ahead of print.

Highlights

• CRISPR screens reveal cellular networks responding to azacytidine treatment

• The integrated stress response (ISR) drives azacytidine-induced cytotoxicity

• Incorporation of azacytidine into mRNA causes ribosome stalling and ISR activation

• RNF25 prevents ISR activation by ubiquitylating the small ribosomal subunit

Aird EJ, Serrano-Benitez A, Siegner SM, Cannavo E, Belotserkovskaya R, Gueorguieva N, Fielden J, Cullot G, Ammann S, Bader AS, Gupta V, Andrieux G, Raab R, Del Rey González M, Cathomen T, Cejka P, Corn JE, Jackson SP.

Nature Communications 17, Article number: 2743 (2026)

DNA double-strand breaks (DSBs) both pose threats to genome integrity and are commonly used for genome editing applications. Structural features of DSB ends play key roles in determining DNA repair pathway usage and outcomes during genome editing, but the cellular factors involved in these processes are only partially known. Through genome-wide CRISPRi screening, we identify ERCC6L2 as critical for repairing Cas12a-induced staggered DSBs but irrelevant for Cas9-induced blunt DSBs.

Aird EJ, Rabl J, Knuesel T, Groen K, Awwad SW, Korablev B, Scherpe L, Al-Herz W, Hupfer R, Recher M, Jackson SP, Hale BG, Corn JE.

Nature Cell Biology Online ahead of print.

Stimulation of the innate immune system by foreign RNA elicits a potent interferon response and can trigger cell death. The mechanisms by which cells balance a robust response with cell-intrinsic lethality are still being uncovered. Here, using genome-wide CRISPR–Cas9 genetic screens with triphosphorylated RNA stimulation, we discover that promyelocytic leukaemia (PML) nuclear body-localized speckled protein 110 (SP110) is a potent inhibitor of type 1 interferon-driven cell death.

Dogan H, Liptay M, Barbosa JS, Gogola E, Duarte AA, Schmid JA, Klebic I, Mutlu M, Siffert M, Francica P, Salguero I, van de Ven M, de Korte-Grimmerink R, Jackson SP, Jonkers J, Lopes M, Dibitetto D, Rottenberg S.

Oncogene 45, 491–504 (2026)

MDC1 is a key protein in DNA damage signaling. When DNA double-strand breaks (DSBs) occur, MDC1 localizes to the sites of DNA damage to promote the recruitment of other factors, including the 53BP1-mediated DSB repair pathway. By studying mechanisms of poly (ADP-ribose) polymerase inhibitor (PARPi) resistance in BRCA2; p53-deficient mouse mammary tumors, we identified a thus far unknown role of MDC1 in replication fork biology. Our results show that MDC1 localizes at active replication forks during normal DNA replication and regulates replication fork progression.

Hough SH, Jhujh SS, Awwad SW, Lewis OE, Lam S, Thomas JC, Mosler T, Bader A, Bartik L, McKee S, Amudhavalli S, Colin E, Damseh N, Clement E, Cacheiro P, Majumdar A, Smedley D, Fluss J, Giannini R, Thiffault I, Zagnoli Vieira G, Belotserkovskaya R, Smerdon SJ, Beli P, Galanty Y, Carnie CJ, Stewart GS, Jackson SP.

EMBO Molecular Medicine 18, 492–513, (2026)

Ubiquitin E3 ligases play crucial roles in the DNA damage response (DDR) by modulating the turnover, localization, activation, and interactions of DDR and DNA replication proteins. We performed a CRISPR-Cas9 knockout screen focused on ubiquitin E3 ligases and related proteins with the DNA topoisomerase I inhibitor camptothecin. This led us to establish that MAEA, a core subunit of the CTLH E3 ligase complex, is a critical regulator of homologous recombination and the replication stress response.

Comer M, Hart A, Lee Yu H, Nazlamova L, Milne-Clark T, Thomas J, Mahalingam V, Dobson L, Robb T, Palma-Reis Goldie F, Hautaviita K, Elwakeel A, Field S, Patikas N, Barber H, Cheung M, Machesky L, Fernandez-Vega I, Metzakopian E, Bradley A, Dev H, de la Rosa J.

Preprint available at SSRN

Therapy-refractory progression in prostate cancer is driven by context-specific combinations of tumour-suppressor loss and lineage plasticity, yet causal interactions in vivo remain poorly defined. We established an orthotopic, transplant-based CRISPR screening platform that initiates tumours from normal primary prostate epithelial cells and permits pooled functional interrogation in immunocompetent mice.

Schlapansky MF, Schröder MS, Santinha AJ, Rothgangl T, Ioannidi EI, Cullot G, Lewkow B, Ortega GC, Nouraiz A, Mailänder D, Selbert L, Lam S, Egea A, Shin JJ, Bordi M, DeWitt M, Gvozdenovic A, Jackson SP, Schroeder T, Gehart H, Schwank G, Platt RJ, Corn JE.

BioRxiv

Genome editing outcomes are governed by DNA repair pathways that vary with cell type and state. We developed scOUT-seq (single-cell Outcomes Using Transcript sequencing), a scalable approach that jointly profiles transcriptomes and matched multi-allelic editing outcomes ranging from homology directed repair (HDR) to inter-chromosomal translocations.

Wilson JCJ, Zhu JY, Vinciauskaite V, Lloyd EG, Lam S, Hart S, Goh CG, Bou-Dagher F, Razumkov H, Kobel L, Kontarakis Z, Fielden J, Schlapansky MF, Loizou JI, Villunger A, Corn JE, Biffi G, Masson GR, Marciniak SJ, Bader AS, Jackson SP.

Nature Communications
16, 8983

Inhibitors of the protein kinase WEE1 have emerged as promising agents for cancer therapy. In this study, we uncover synergistic interactions between WEE1 small-molecule inhibitors and defects in mRNA translation, mediated by activation of the integrated stress response (ISR) through the kinase GCN2. Using a pooled CRISPRi screen, we identify GSPT1 and ALKBH8 as factors whose depletion confer hypersensitivity to the WEE1 inhibitor, AZD1775. We demonstrate that this synergy depends on ISR activation, which is induced by the off-target activity of WEE1 inhibitors.