Abstract:
:Background. For development of individualized treatment on a routine basis, transfer of patients' tumor tissue in a xenograft model (i.e., generation of patient-derived xenografts (PDX)) is desirable for molecular, biochemical, or functional analyses. Drawbacks are dissatisfactory tumor take rates, the necessity of fast tumor tissue processing, and extensive logistics demanding teamwork of surgeons, pathologists, and laboratory researchers. Methods. The take rates of ten colorectal cancer (CRC) tissue samples in immunodeficient mice were compared after direct cryopreservation and after a 24 h cooling period at 4°C prior to cryopreservation. Additionally, the effect of simultaneous Matrigel application on the take rates was investigated. Beside take rates, tumor growth characteristics and cell culture success were analyzed. Results. Tumor takes of CRC tissue samples were significantly improved after Matrigel application (8 versus 15 takes, p = 0.04). As expected, they diminished furthermore after 24 h cooling. Application of Matrigel could counteract this decrease significantly (2 versus 7 takes, p = 0.03). Cumulative take rate after cryopreservation was satisfactory (70%). Conclusion. Matrigel application after 24 h delay in tissue processing facilitates CRC PDX model development. These data help developing strategies for individualized tumor therapies in the context of multicenter clinical studies and for basic research on primary patient tumors.
journal_name
Biomed Res Intjournal_title
BioMed research internationalauthors
Gock M,Kühn F,Mullins CS,Krohn M,Prall F,Klar E,Linnebacher Mdoi
10.1155/2016/1715053subject
Has Abstractpub_date
2016-01-01 00:00:00pages
1715053eissn
2314-6133issn
2314-6141journal_volume
2016pub_type
杂志文章abstract:Background:Adenosine, derived from the degradation of ATP via ectonucleotidases CD39 and CD73, is a critical immunosuppressive metabolite in the hypoxic microenvironment of tumor tissue. Adenosine signaling via A2aR can inhibit the antitumor immune response of CD8+ T cells. CD39 and CD73 high-expressing Tregs play a cr...
journal_title:BioMed research international
pub_type: 杂志文章
doi:10.1155/2019/4093214
更新日期:2019-12-14 00:00:00
abstract::Apc-mutated Pirc rats, spontaneously developing intestinal tumours, are resistant to 1,2-dimethylhydrazine- (DMH-) induced colon apoptosis. To understand this phenomenon, we analyzed the expression of genotoxic stress-related genes Mgmt, Gsta1, and Gstp1 in the colon of wt and Pirc rats in basal conditions and 24 h af...
journal_title:BioMed research international
pub_type: 杂志文章
doi:10.1155/2016/1310342
更新日期:2016-01-01 00:00:00
abstract::The nonnucleoside reverse transcriptase inhibitors, used for the treatment of HIV infections, are reported to have low bioavailability pertaining to high first-pass metabolism, high protein binding, and enzymatic metabolism. They also show low permeability across blood brain barrier. The CNS is reported to be the most...
journal_title:BioMed research international
pub_type: 杂志文章
doi:10.1155/2017/5984014
更新日期:2017-01-01 00:00:00
abstract::Protein structure prediction (PSP) is computationally a very challenging problem. The challenge largely comes from the fact that the energy function that needs to be minimised in order to obtain the native structure of a given protein is not clearly known. A high resolution 20 × 20 energy model could better capture th...
journal_title:BioMed research international
pub_type: 杂志文章
doi:10.1155/2013/924137
更新日期:2013-01-01 00:00:00
abstract::The regulation of transcriptome expression level is a complex process involving multiple-level interactions among molecules such as protein coding RNA (mRNA), long noncoding RNA (lncRNA), and microRNA (miRNA), which are essential for the transcriptome stability and maintenance and regulation of body homeostasis. The a...
journal_title:BioMed research international
pub_type: 杂志文章
doi:10.1155/2017/3859582
更新日期:2017-01-01 00:00:00
abstract::The aim of this study was to investigate the potential of microparticles based on biocompatible phytolipids [Softisan® 154 (SF) (hydrogenated palm oil) and super-refined sunseed oil (SO)] and polyethylene glycol- (PEG-) 4000 to improve intravaginal delivery of miconazole nitrate (MN) for effective treatment of vulvova...
journal_title:BioMed research international
pub_type: 杂志文章
doi:10.1155/2018/3714329
更新日期:2018-06-06 00:00:00
abstract::The energy generated by an extremely low frequency electromagnetic field (ELF-EMF) is too weak to directly induce genotoxicity. However, it is reported that an extremely low frequency magnetic field (ELF-MF) is related to DNA strand breakage and apoptosis. The testes that conduct spermatogenesis through a dynamic cell...
journal_title:BioMed research international
pub_type: 杂志文章,评审
doi:10.1155/2014/567183
更新日期:2014-01-01 00:00:00
abstract::Chagas disease is caused by Trypanosoma cruzi infection. Besides the host-related factors, such as immune response and genetic background, the parasite, strain, and occurrences of reinfection episodes, may influence disease outcome. Our results demonstrate that both the primary infection and the reinfection with the C...
journal_title:BioMed research international
pub_type: 杂志文章
doi:10.1155/2014/648715
更新日期:2014-01-01 00:00:00
abstract:Introduction:The aim of the study was to analyze which variables influenced the completion of a cold loop hysteroscopic myomectomy in a one-step procedure in a large cohort of patients. Materials and Methods:A retrospective cohort study of 1434 cold loop resectoscopic myomectomies consecutively performed. The study po...
journal_title:BioMed research international
pub_type: 杂志文章
doi:10.1155/2018/8429047
更新日期:2018-05-20 00:00:00
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journal_title:BioMed research international
pub_type: 杂志文章,评审
doi:10.1155/2017/4615727
更新日期:2017-01-01 00:00:00
abstract::Fibrosarcomas are rare malignant mesenchymal tumors originating from fibroblasts. Importantly, fibrosarcoma cells were shown to have a high content and turnover of extracellular matrix (ECM) components including hyaluronan (HA), proteoglycans, collagens, fibronectin, and laminin. ECMs are complicated structures that s...
journal_title:BioMed research international
pub_type: 杂志文章,评审
doi:10.1155/2013/929531
更新日期:2013-01-01 00:00:00
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journal_title:BioMed research international
pub_type: 杂志文章,评审
doi:10.1155/2015/217047
更新日期:2015-01-01 00:00:00
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journal_title:BioMed research international
pub_type: 杂志文章
doi:10.1155/2015/147196
更新日期:2015-01-01 00:00:00
abstract:Purpose:β-Defensin 118 (DEFB118) is a novel host defense peptide (HDP) identified in humans. To evaluate its potentials for future utilization, the DEFB118 gene was expressed in Escherichia coli (E. coli) and the recombinant protein was fully characterized. Methods:The DEFB118 protein was obtained by heterologous expr...
journal_title:BioMed research international
pub_type: 杂志文章
doi:10.1155/2020/1395304
更新日期:2020-11-09 00:00:00
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journal_title:BioMed research international
pub_type: 杂志文章
doi:10.1155/2014/562919
更新日期:2014-01-01 00:00:00
abstract::[This corrects the article DOI: 10.1155/2020/4671349.]. ...
journal_title:BioMed research international
pub_type: 杂志文章,已发布勘误
doi:10.1155/2020/7638969
更新日期:2020-06-30 00:00:00
abstract::A wide range of molecular techniques have been developed for genotyping Candida species. Among them, multilocus sequence typing (MLST) and microsatellite length polymorphisms (MLP) analysis have recently emerged. MLST relies on DNA sequences of internal regions of various independent housekeeping genes, while MLP iden...
journal_title:BioMed research international
pub_type: 杂志文章,评审
doi:10.1155/2013/923742
更新日期:2013-01-01 00:00:00
abstract::In preclinical treatment of polytraumatized patients crystalloids are preferentially used. To avoid metabolic acidosis, metabolizable anions like lactate or acetate are used to replace chloride in these solutions. We here studied the effects of malated Ringer's in resuscitation of both shock severities in comparison t...
journal_title:BioMed research international
pub_type: 杂志文章
doi:10.1155/2015/151503
更新日期:2015-01-01 00:00:00
abstract::Long noncoding RNAs play an essential role in bladder cancer progression. The role of long noncoding RNA EGFR-AS1 in bladder cancer needs further study. We used clinical specimens to analyze the relationship between EGFR-AS1 and bladder cancer patients' characteristics. The functional experiments and mechanism studies...
journal_title:BioMed research international
pub_type: 杂志文章
doi:10.1155/2020/6665974
更新日期:2020-12-22 00:00:00
abstract::COVID-19 is a pandemic which has spread to more than 200 countries. Its high transmission rate makes it difficult to control. To date, no specific treatment has been found as a cure for the disease. Therefore, prediction of COVID-19 cases provides a useful insight to mitigate the disease. This study aims to model and ...
journal_title:BioMed research international
pub_type: 杂志文章
doi:10.1155/2020/8850199
更新日期:2020-12-03 00:00:00
abstract::We compared the efficacy of intravitreal aflibercept (IVA) to intravitreal ranibizumab (IVR) injections in eyes with diabetic macular edema (DME). The medical records of 49 eyes of 36 patients who were diagnosed with DME and had received IVR and 46 eyes of 40 patients who had received IVA treatment were reviewed. The ...
journal_title:BioMed research international
pub_type: 临床试验,杂志文章
doi:10.1155/2017/1747108
更新日期:2017-01-01 00:00:00
abstract::Vitamin D is important for normal development and maintenance of the skeleton. Hypovitaminosis D adversely affects calcium metabolism, osteoblastic activity, matrix ossification, bone remodeling and bone density. It is well known that Vit. D deficiency in the developing skeleton is related to rickets, while in adults ...
journal_title:BioMed research international
pub_type: 杂志文章,评审
doi:10.1155/2013/396541
更新日期:2013-01-01 00:00:00
abstract::Polyetheretherketone (PEEK), which has biomechanical performance similar to that of human cancellous bone, is used widely as a spinal implant material. However, its bioinertness and hydrophobic surface properties result in poor osseointegration. This study applies a novel modification method, arc ion plating (AIP), th...
journal_title:BioMed research international
pub_type: 杂志文章
doi:10.1155/2015/328943
更新日期:2015-01-01 00:00:00
abstract:Objectives:Magnetic resonance imaging (MRI) and in particular diffusion-weighted imaging (DWI) have been broadly proven to be the reference imaging method to discriminate between cholesteatoma and noncholesteatomatous middle ear lesions, especially when high tissue specificity is required. The aim of this study is to d...
journal_title:BioMed research international
pub_type: 杂志文章
doi:10.1155/2018/7945482
更新日期:2018-04-24 00:00:00
abstract::MicroRNAs are small noncoding RNAs, involved in the regulation of many cellular processes in plants. Hundreds of miRNAs have been identified in cassava by various techniques, yet these identifications were constrained by a lack of miRNA templates and the narrow range of conditions in transcriptome study. In this resea...
journal_title:BioMed research international
pub_type: 杂志文章
doi:10.1155/2019/2019846
更新日期:2019-06-19 00:00:00
abstract::Schistosomiasis, caused by infection with Schistosoma species, remains an important parasitic zoonosis. Thioredoxin glutathione reductase of Schistosoma japonicum (SjTGR) plays an important role in the development of the parasite and for its survival. Here we present a recombinant plasmid DNA vaccine, pVAX1/SjTGR, to ...
journal_title:BioMed research international
pub_type: 杂志文章
doi:10.1155/2013/952416
更新日期:2013-01-01 00:00:00
abstract::This work evaluated the physicochemical properties and antioxidant activity of spray dried extracts (SDE) from Psidium guajava L. leaves. Different drying carriers, namely, maltodextrin, colloidal silicon dioxide, Arabic gum, and β -cyclodextrin at concentrations of 40 and 80% relative to solids content, were added to...
journal_title:BioMed research international
pub_type: 杂志文章
doi:10.1155/2014/382891
更新日期:2014-01-01 00:00:00
abstract::Poly(ADP-ribose) polymerase (PARP) inhibitors have proven to be successful agents in inducing synthetic lethality in several malignancies. Several PARP inhibitors have reached clinical trial testing for treatment in different cancers, and, recently, Olaparib (AZD2281) has gained both United States Food and Drug Admini...
journal_title:BioMed research international
pub_type: 杂志文章,评审
doi:10.1155/2016/2346585
更新日期:2016-01-01 00:00:00
abstract::The history of polyglutamine diseases dates back approximately 20 years to the discovery of a polyglutamine repeat in the androgen receptor of SBMA followed by the identification of similar expansion mutations in Huntington's disease, SCA1, DRPLA, and the other spinocerebellar ataxias. This common molecular feature of...
journal_title:BioMed research international
pub_type: 杂志文章,评审
doi:10.1155/2014/701758
更新日期:2014-01-01 00:00:00
abstract::More than one-third of the world's population is infected with one or more helminthic parasites. Helminth infections are prevalent throughout tropical and subtropical regions where malaria pathogens are transmitted. Malaria is the most widespread and deadliest parasitic disease. The severity of the disease is strongly...
journal_title:BioMed research international
pub_type: 杂志文章,评审
doi:10.1155/2014/913696
更新日期:2014-01-01 00:00:00