Evidence map›Paper›PMID 21492126›Full record

ArticleBritish journal of haematology2011

Distinct cellular and therapeutic effects of obatoclax in rituximab-sensitive and -resistant lymphomas.

Elizabeth A Brem, Karen Thudium, Sapna Khubchandani, Ping-Chiao Tsai, Scott H Olejniczak, Seema Bhat, Wasif Riaz, Jenny Gu, Arshad Iqbal, Ryan Campagna and 8 more

Open access · bronzeAbstract read
In one paragraph

Article in British journal of haematology, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 33 papers.

0numbers the graph read from it
0cells of the map it votes in
33citing papers in PubMed
2.4field-weighted citation impact, top 11% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

33 citing papers in PubMed, 52 citations in OpenAlex.

  1. Trial
  2. Trial
  3. HighCells · 2023
    Article
  4. Computational study on novel natural inhibitors targeting BCL2.Medical oncology (Northwood, London, England) · 2021
    Article
  5. Review
  6. Review
  7. Article
  8. Review
  9. Review
  10. Review
  11. Review
  12. Targeting autophagy in lymphomas: a double-edged sword?International journal of hematology · 2018
    Review
  13. Review
  14. Article
  15. Autophagy in Cancer Therapy.Frontiers in oncology · 2017
    Review
  16. Article
  17. Article
  18. Article
  19. Article
  20. Article
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

18 authors at 1 institution in 1 country.

Elizabeth A BremDepartment of Medicine, Roswell Park Cancer Institute,Elm and Carlton Streets, Buffalo, NY 14263, USA.
Karen Thudium
Sapna Khubchandani
Ping-Chiao Tsai
Scott H Olejniczak
Seema Bhat
Wasif Riaz
Jenny Gu
Arshad Iqbal
Ryan Campagna
Joy Knight
Cory Mavis
Paul Hoskin
George Deeb
John F Gibbs
Gerald Fetterly
Myron S Czuczman
Francisco J Hernandez-Ilizaliturri
Roswell Park Comprehensive Cancer Center · US

Funding

Targeted Therapy of B-cell MalignanciesP01CA103985 · NCI · CTR FOR MOLECULAR MEDICINE/IMMUNOLOGY · PI GOLDENBERG, DAVID M · 2005 to 2009
$7.0M
Targeting the proteasome to overcome therapy resistance in B-NHLR01CA136907 · NCI · ROSWELL PARK CANCER INSTITUTE CORP · PI CZUCZMAN, MYRON S · 2009 to 2013
$1.8M
NCI NIH HHS P01 CA103985NCI NIH HHS P01-CA103985-02NCI NIH HHS R01 CA136907
6 · The paper itself

Abstract

Bcl-2 proteins represent a rheostat that controls cellular viability. Obatoclax, a BH3-mimetic, has been designed to specifically target and counteract anti-apoptotic Bcl-2 proteins. We evaluated the biological effects of obatoclax on the anti-tumour activity of rituximab and chemotherapy agents. Obatoclax induced cell death of rituximab/chemotherapy-sensitive (RSCL), -resistant cell lines (RRCL) and primary tumour-cells derived from patients with B-cell lymphomas (N=39). Obatoclax also enhanced the activity of rituximab and had synergistic activity when combined with chemotherapy agents. The ability of Obatoclax to induce PARP cleavage varied between patient samples and was not observed in some RRCL. Inhibition of caspase activity did not affect obatoclax activity, suggesting the existence of caspase-independent death pathways. Autophagy was detected by LC3 conversion and/or electron microscopy in RRCL and in patient-derived tumour cells. Moreover, obatoclax activity was inhibited by Beclin-1 knockdown. In summary, obatoclax is an active Bcl-2 inhibitor that potentiates the activity of chemotherapy agents and, to a lesser degree, rituximab. Defining the molecular events triggered by obatoclax is necessary to further its clinical development and identify potential biomarkers that are predictive of response.

Indexed as

Antibodies, Monoclonal, Murine-DerivedAntibody-Dependent Cell CytotoxicityAntineoplastic Combined Chemotherapy ProtocolsApoptosis Regulatory ProteinsAutophagybcl-2-Associated X Proteinbcl-2 Homologous Antagonist-Killer ProteinCaspasesCell DeathDrug Evaluation, PreclinicalDrug Resistance, NeoplasmDrug SynergismHumansIndolesLymphoma, B-CellLymphoma, FollicularAntibodies, Monoclonal, Murine-DerivedApoptosis Regulatory ProteinsBAK1 protein, humanBAX protein, humanBBC3 protein, humanbcl-2-Associated X Proteinbcl-2 Homologous Antagonist-Killer ProteinCaspasesIndolesNeoplasm ProteinsobatoclaxPMAIP1 protein, humanProto-Oncogene ProteinsProto-Oncogene Proteins c-bcl-2PyrrolesRituximab

Identifiers

PMID21492126
PMCPMC3092002
OpenAlexW1801516505

What OpenQuestion holds

Textmetadata
LicenceTDM
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.