Evidence map›Paper›PMID 34680456›Full record

ArticleBiomedicines2021

NK Cell-Mediated Eradication of Ovarian Cancer Cells with a Novel Chimeric Antigen Receptor Directed against CD44.

Rüdiger Klapdor, Shuo Wang, Michael A Morgan, Katharina Zimmermann, Jens Hachenberg, Hildegard Büning, Thilo Dörk, Peter Hillemanns, Axel Schambach

Open access · goldAbstract read
In one paragraph

Article in Biomedicines, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 32 papers.

0numbers the graph read from it
0cells of the map it votes in
32citing papers in PubMed
2.0field-weighted citation impact, top 13% 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

32 citing papers in PubMed, 37 citations in OpenAlex.

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  9. Rendering NK Cells Antigen-Specific for the Therapy of Solid Tumours.International journal of molecular sciences · 2025
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  20. Manufacturing CAR-NK against tumors: Who is the ideal supplier?Chinese journal of cancer research = Chung-kuo yen cheng yen chiu · 2024
    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

9 authors at 2 institutions in 2 countries.

Rüdiger KlapdorDepartment of Gynecology and Obstetrics, Hannover Medical School, 30625 Hannover, Germany.ORCID 0000-0002-0117-4366
Shuo WangDepartment of Gynecology and Obstetrics, Hannover Medical School, 30625 Hannover, Germany.
Michael A MorganInstitute for Experimental Hematology, Hannover Medical School, 30625 Hannover, Germany.
Katharina ZimmermannInstitute for Experimental Hematology, Hannover Medical School, 30625 Hannover, Germany.
Jens HachenbergDepartment of Gynecology and Obstetrics, Hannover Medical School, 30625 Hannover, Germany.ORCID 0000-0002-4542-5833
Hildegard BüningInstitute for Experimental Hematology, Hannover Medical School, 30625 Hannover, Germany.
Thilo DörkDepartment of Gynecology and Obstetrics, Hannover Medical School, 30625 Hannover, Germany.ORCID 0000-0002-9458-0282
Peter HillemannsDepartment of Gynecology and Obstetrics, Hannover Medical School, 30625 Hannover, Germany.ORCID 0000-0001-9829-3531
Axel SchambachInstitute for Experimental Hematology, Hannover Medical School, 30625 Hannover, Germany.
Medizinische Hochschule Hannover · DEBoston Children's Hospital · US

Funding

Deutsche Forschungsgemeinschaft SFB738, Cluster of Excellence REBIRTH, KFO286Hannover Medical School HILFHannover Medical School Young AcademyNiedersächsisches Ministerium für Wissenschaft und Kultur REBIRTH
6 · The paper itself

Abstract

Ovarian cancer is the most common cause of gynecological cancer-related death in the developed world. Disease recurrence and chemoresistance are major causes of poor survival rates in ovarian cancer patients. Ovarian cancer stem cells (CSCs) were shown to represent a source of tumor recurrence owing to the high resistance to chemotherapy and enhanced tumorigenicity. Chimeric antigen receptor (CAR)-based adoptive immunotherapy represents a promising strategy to reduce the risk for recurrent disease. In this study, we developed a codon-optimized third-generation CAR to specifically target CD44, a marker widely expressed on ovarian cancer cells and associated with CSC-like properties and intraperitoneal tumor spread. We equipped NK-92 cells with the anti-CD44 CAR (CD44NK) and an anti-CD19 control CAR (CD19NK) using lentiviral SIN vectors. Compared to CD19NK and untransduced NK-92 cells, CD44NK showed potent and specific cytotoxic activity against CD44-positive ovarian cancer cell lines (SKOV3 and OVCAR3) and primary ovarian cancer cells harvested from ascites. In contrast, CD44NK had less cytotoxic activity against CD44-negative A2780 cells. Specific activation of engineered NK cells was also demonstrated by interferon-γ (IFNγ) secretion assays. Furthermore, CD44NK cells still demonstrated cytotoxic activity under cisplatin treatment. Most importantly, the simultaneous treatment with CD44NK and cisplatin showed higher anti-tumor activity than sequential treatment.

Indexed as

adoptive immunotherapyCD44chimeric antigen receptorNK cellsovarian cancer

Identifiers

PMID34680456
PMCPMC8533227
OpenAlexW3204775070

What OpenQuestion holds

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LicenceCC BY
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.