Cited by 1,992Cell death mechanisms and regulationCancer-related Molecular PathwaysFlavonoids in Medical Research

ABT-263: A Potent and Orally Bioavailable Bcl-2 Family Inhibitor

Open access
Tse, Christin, Shoemaker, Alexander R., Adickes, Jessica, Anderson, Mark G., Chen, Jun, Jin, Sha, Johnson, Eric F., Marsh, Kennan C. +10 more·2008·Cancer Research

Published version of a preprint

Abstract

Overexpression of the prosurvival Bcl-2 family members (Bcl-2, Bcl-xL, and Mcl-1) is commonly associated with tumor maintenance, progression, and chemoresistance. We previously reported the discovery of ABT-737, a potent, small-molecule Bcl-2 family protein inhibitor. A major limitation of ABT-737 is that it is not orally bioavailable, which would limit chronic single agent therapy and flexibility to dose in combination regimens. Here we report the biological properties of ABT-263, a potent, orally bioavailable Bad-like BH3 mimetic (K(i)'s of <1 nmol/L for Bcl-2, Bcl-xL, and Bcl-w). The oral bioavailability of ABT-263 in preclinical animal models is 20% to 50%, depending on formulation. ABT-263 disrupts Bcl-2/Bcl-xL interactions with pro-death proteins (e.g., Bim), leading to the initiation of apoptosis within 2 hours posttreatment. In human tumor cells, ABT-263 induces Bax translocation, cytochrome c release, and subsequent apoptosis. Oral administration of ABT-263 alone induces complete tumor regressions in xenograft models of small-cell lung cancer and acute lymphoblastic leukemia. In xenograft models of aggressive B-cell lymphoma and multiple myeloma where ABT-263 exhibits modest or no single agent activity, it significantly enhances the efficacy of clinically relevant therapeutic regimens. These data provide the rationale for clinical trials evaluating ABT-263 in small-cell lung cancer and B-cell malignancies. The oral efficacy of ABT-263 should provide dosing flexibility to maximize clinical utility both as a single agent and in combination regimens.

The claims and statistics of this paper haven’t been checked yet.

Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.

A few free checks a day · papers already verified open instantly · results are public

Integrity signals

Registry

Crossref · 10.1158/0008-5472.can-07-5836

Cites

46 of 46 references verified0 citation errors · 0 not checkable

Statistics

Claims the paper makes

The claims and statistics of this paper haven’t been checked yet.

Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.

A few free checks a day · papers already verified open instantly · results are public

Claims other papers make about this one

Each is checked against this paper’s own text: does it say what the citing paper says it does?

Self-check

Percentages, sums and reported differences re-computed from the paper’s own numbers.

The self-check needs the paper’s full text.

Cites

Flagged first, then by citations

Research works printed but not linked: 1

  1. Danial NN, Korsmeyer SJ. Cell death: critical control points. Cell 2004;116:205-19.

Cited by

Sorted by citations

Authors
Tse, C., Shoemaker, A. R., Adickes, J., Anderson, M. G., Chen, J., Jin, S., Johnson, E. F., Marsh, K. C., Mitten, M. J., Nimmer, P., Roberts, L., Tahir, S. K., Xiao, Y., Yang, X., Zhang, H., Fesik, S., Rosenberg, S. H., & Elmore, S. W.
Affiliations
  • Abbott (United States) (US)
  • Global Pharmaceutical Research and Development, Abbott Laboratories, Abbott Park, Illinois
Venue
Cancer Research
Published
2008-05-01
Volume
68
Issue
9
Pages
3421-3428
ISSN
  • 0008-5472 (ISSN-L)
  • 1538-7445
OpenAlex
W2168632005
Cited by
1,992
References
46
Citations by year
2026: 72 · 2025: 93 · 2024: 117 · 2023: 131 · 2022: 114 · 2021: 141 · 2020: 154 · 2019: 113 · 2018: 96 · 2017: 105 · 2016: 113 · 2015: 141 · 2014: 123 · 2013: 121 · 2012: 98
FWCI
36.57
Type
journal article
Language
en
Open access
Locations
  • Cancer Research (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Cell death mechanisms and regulation
  • Health Sciences › Medicine › Oncology › Cancer-related Molecular Pathways
  • Health Sciences › Medicine › Pharmacology › Flavonoids in Medical Research
Keywords
navitoclax, ABT-737, BCL-2 inhibitor, BH3 mimetics, oral bioavailability, apoptosis, Bcl-2, Bcl-xL, Bcl-w, Bax translocation, cytochrome c release, small cell lung cancer, acute lymphoblastic leukemia, B-cell lymphoma, multiple myeloma, combination therapy, chemoresistance
MeSH terms
Rituximab, Administration, Oral, Aniline Compounds, Animals, Antibodies, Monoclonal, Antineoplastic Agents, Cells, Cultured, Drug Synergism, Humans, Lung Neoplasms, Models, Biological, Neoplasms, Sulfonamides, Thrombocytopenia, Mice, SCID, Treatment Outcome, Carcinoma, Small Cell, Mice, Knockout, Proto-Oncogene Proteins c-bcl-2, Lymphoma, Mantle-Cell, Xenograft Model Antitumor Assays, Tumor Burden, Mice, Precursor Cell Lymphoblastic Leukemia-Lymphoma, Antibodies, Monoclonal, Murine-Derived

About these checks

Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.

Statistics and arithmetic are recomputed, not judged.

Confidence bands are shown only for fields calibrated on our annotated test set. None is calibrated yet, so no band is shown.

What counts as a claim ›How we measure confidence ›How we check this ›

Are you an author, or do you see a problem with this page? Request a review