Evidence map›Paper›PMID 24556924›Full record

ArticleCancer biology & therapy2014

Lifespan extension and cancer prevention in HER-2/neu transgenic mice treated with low intermittent doses of rapamycin.

Irina G Popovich, Vladimir N Anisimov, Mark A Zabezhinski, Anna V Semenchenko, Margarita L Tyndyk, Maria N Yurova, Mikhail V Blagosklonny

Open access · bronzeAbstract read
In one paragraph

Article in Cancer biology & therapy, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 60 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
60citing papers in PubMed, 1 pooled it
3.7field-weighted citation impact, top 6% 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

60 citing papers in PubMed, 1 synthesis or guideline pooled it, 80 citations in OpenAlex.

  1. Pooled it
  2. Trial
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4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

7 authors at 2 institutions in 2 countries.

Irina G PopovichDepartment of Carcinogenesis and Oncogerontology; N.N. Petrov Research Institute of Oncology; St. Petersburg, Russia.
Vladimir N AnisimovDepartment of Carcinogenesis and Oncogerontology; N.N. Petrov Research Institute of Oncology; St. Petersburg, Russia.
Mark A ZabezhinskiDepartment of Carcinogenesis and Oncogerontology; N.N. Petrov Research Institute of Oncology; St. Petersburg, Russia.
Anna V SemenchenkoDepartment of Carcinogenesis and Oncogerontology; N.N. Petrov Research Institute of Oncology; St. Petersburg, Russia.
Margarita L TyndykDepartment of Carcinogenesis and Oncogerontology; N.N. Petrov Research Institute of Oncology; St. Petersburg, Russia.
Maria N YurovaDepartment of Carcinogenesis and Oncogerontology; N.N. Petrov Research Institute of Oncology; St. Petersburg, Russia.
Mikhail V BlagosklonnyDepartment of Cell Stress Biology; Roswell Park Cancer Institute; Buffalo, NY USA.
Institute of Oncology NN Petrov · RURoswell Park Comprehensive Cancer Center · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Target of Rapamycin (TOR) is involved in cellular and organismal aging. Rapamycin extends lifespan and delays cancer in mice. It is important to determine the minimum effective dose and frequency of its administration that still extends lifespan and prevents cancer. Previously we tested 1.5 mg/kg of rapamycin given subcutaneously 6 times per two weeks followed by a two-week break (1.5 × 6/bi-weekly schedule: total of 6 injections during a 4-week period). This intermittent treatment prolonged lifespan and delayed cancer in cancer-prone female FVB/N HER-2/neu mice. Here, the dose was decreased from 1.5 mg/kg to 0.45 mg/kg per injection. This treatment was started at the age of 2 months (group Rap-2), 4 months (Rap-4), and 5 months (Rap-5). Three control groups received the solvent from the same ages. Rapamycin significantly delayed cancer and decreased tumor burden in Rap-2 and Rap-5 groups, increased mean lifespan in Rap-4 and Rap-5 groups, and increased maximal lifespan in Rap-2 and Rap-5 groups. In Rap-4 group, mean lifespan extension was achieved without significant cancer prevention. The complex relationship between life-extension and cancer-prevention depends on both the direct effect of rapamycin on cancer cells and its anti-aging effect on the organism, which in turn prevents cancer indirectly. We conclude that total doses of rapamycin that are an order of magnitude lower than standard total doses can detectably extend life span in cancer-prone mice.

Indexed as

AnimalsAnticarcinogenic AgentsCarcinogenesisErb-b2 Receptor Tyrosine KinasesFemaleLongevityMammary Neoplasms, AnimalMiceMice, TransgenicSirolimusAnticarcinogenic AgentsErbb2 protein, mouseErb-b2 Receptor Tyrosine KinasesSirolimusanti-aging agentscancerlongevityrapalogs

Identifiers

PMID24556924
PMCPMC4026081
OpenAlexW2002990192

What OpenQuestion holds

Textmetadata
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.