Cited by 44Protein Degradation and InhibitorsUbiquitin and proteasome pathwaysChemical Synthesis and Analysis

Targeting oncoproteins with a positive selection assay for protein degraders

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Koduri, Vidyasagar, Duplaquet, Leslie, Lampson, Benjamin L., Wang, Adam C., Sabet, Amin H., Ishoey, Mette, Paulk, Joshiawa, Teng, Mingxing +18 more·2021·Science Advances

Abstract

A new positive selection assay could enhance the discovery of compounds that degrade previously undruggable proteins.

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Crossref · 10.1126/sciadv.abd6263

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49 of 49 references verified0 citation errors · 0 not checkable

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  • In a proof-of-concept screen, IKZF1 fused to DCK identified a CRBN-independent degrader, Spautin-1, alongside iMiD-like compounds, highlighting the assay's utility for uncovering mechanism-agnostic molecular glues.

    “in an elegant proof-of-concept screen, iKZF1 was fused to DcK to identify novel molecular glue degraders.given that iKZF1 is a well-established neo-substrate of iMiD-bound cRBN, the identification of a cRBN-independent degrader, Spautin-1, alongside iMiD-like compounds, highlights the assay's utility for uncovering mechanism-agnostic molecular glues (Koduri et al. 2021).”

    From From serendipity to strategy: molecular glue degraders in cancer therapeutics (2025) · cites this paper as Koduri et al. 2021

    The Results and Discussion report that DCK*-IKZF1 screens identified IMiD-like IKZF1 degraders and Spautin-1, which down-regulated IKZF1 even in cells lacking cereblon. The paper does not establish that Spautin-1 is a molecular glue: it says its direct target is unknown and that its slower effect suggests an indirect mechanism. (LLM, conf=0.88)

    Experimental — accuracy not yet measured
  • A positive-selection assay based on the suicide protein deoxycytidine kinase (DCK) enables identification of compounds that trigger selective degradation.

    “One powerful approach uses a positive-selection assay based on a suicide protein, deoxycytidine kinase (DcK) (Koduri et al. 2021).”

    From From serendipity to strategy: molecular glue degraders in cancer therapeutics (2025) · cites this paper as Koduri et al. 2021

  • In this system, engineered DCK phosphorylates the nucleoside analogue BVDU into a toxic product; fusion of DCK to a target protein allows compounds that degrade the target to simultaneously degrade DCK, preventing BVDU toxicity and enabling cell survival.

    “in this system, an engineered DcK phosphorylates the nucleoside analogue Bvdu, converting it into a toxic product that poisons the cell.Fusion of DcK to a target protein allows compounds that degrade the target to simultaneously degrade DcK, preventing Bvdu toxicity and enabling cell survival.”

    From From serendipity to strategy: molecular glue degraders in cancer therapeutics (2025) · cites this paper as Koduri et al. 2021

  • Using a small library of compounds enriched in non-IMiD-like metabolic inhibitors, the authors found that Spautin-1 induces IKZF1 destabilization in a CRBN-independent manner.

    “Indeed, using a small library of compounds enriched in (non-IMiD-like) metabolic inhibitors, the authors found that the compound Spautin-1 induces IKZF1 destabilization in a CRBN-independent manner.”

    From Chasing molecular glue degraders: screening approaches (2022) · cites this paper as [161]

  • The authors engineered a reporter system that converts protein loss into a positive selection output (resistance).

    “In brief, the authors engineered a reporter system that converts protein loss into a positive selection output (resistance).”

    From Chasing molecular glue degraders: screening approaches (2022) · cites this paper as [161]

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Authors
Koduri, V., Duplaquet, L., Lampson, B. L., Wang, A. C., Sabet, A. H., Ishoey, M., Paulk, J., Teng, M., Harris, I. S., Endress, J. E., Liu, X., Dasilva, E., Paulo, J. A., Briggs, K. J., Doench, J. G., Ott, C. J., Zhang, T., Donovan, K. A., Fischer, E. S., Gygi, S. P., Gray, N. S., Bradner, J., Medin, J. A., Buhrlage, S. J., Oser, M. G., & Kaelin, W. G.
Affiliations
  • Dana-Farber Cancer Institute (US)
  • Harvard University (US)
  • Department of Cell Biology, Harvard Medical School, Boston, MA 02115, USA.
  • Broad Institute (US)
  • Novartis Institutes for Biomedical Research, Cambridge, MA 02139, USA.
  • Medical College of Wisconsin (US)
  • Brigham and Women's Hospital (US)
Corresponding author
  • Oser, Matthew G.
  • Kaelin, William G.
Venue
Science Advances
Published
2021-02-05
Volume
7
Issue
6
ISSN
2375-2548 (ISSN-L)
OpenAlex
W3126312907
Cited by
44
References
49
Citations by year
2026: 5 · 2025: 9 · 2024: 9 · 2023: 6 · 2022: 12 · 2021: 3
FWCI
2.35
Type
journal article
Language
en
Open access
Locations
  • Science Advances (publishedVersion, cc-by-nc)
  • PubMed Central (publishedVersion, cc-by-nc)
  • PubMed (publishedVersion)
Funders
  • National Institutes of Health (R35, T32 NIH Training Grant CA009172, R01 CA214608-03, Pathway to Independence Award R00CA190861)
  • Howard Hughes Medical Institute
  • National Cancer Institute (R01CA2144608)
  • NIGMS (GM132129)
  • American Society of Hematology (Research Training Award)
  • Carlsbergfondet (Internationalisation Fellowship)
  • Damon Runyon Cancer Research Foundation (Clinical Investigator Award)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Protein Degradation and Inhibitors
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Ubiquitin and proteasome pathways
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Chemical Synthesis and Analysis
Keywords
protein degraders, undruggable proteins, oncoprotein, immunomodulators, spautin-1, CDK2, ASCL1, CRISPR-Cas9 screen, compound screening, multiple myeloma
MeSH terms
Benzylamines, Humans, Quinazolines, Thalidomide, Transcription Factors, Oncogene Proteins, Adaptor Proteins, Signal Transducing, Ikaros Transcription Factor, Basic Helix-Loop-Helix Proteins, Proteolysis, CRISPR-Cas Systems

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