Functional Characteristics Of Lactobacilli From Traditional Bulgarian Fermented Milk Products,
2019
TÜBİTAK
Functional Characteristics Of Lactobacilli From Traditional Bulgarian Fermented Milk Products, Veronica Nemska, Petya Logar, Tanya Rasheva, Zdravka Sholeva, Nelly Georgieva, Svetla Danova
Turkish Journal of Biology
After oral administration, probiotic lactobacilli meet a number of protection systems in the human body, such as exposure to gastric, pancreatic, and small intestinal juices. Overcoming these detrimental barriers allows living bacteria to adhere to the intestinal epithelium and permanently colonize the gastrointestinal tract (GIT), providing health benefits to the host. Based on this, the transit tolerance of 25 candidate probiotic lactobacilli from katak, yoghurt, and white-brined and yellow cheese to simulated bile and small intestinal juices of variable pH was investigated. To establish their resistance, in vitro model systems based on modified MRS media and a longer duration of …
Overexpression Of A Fusion Defensin Gene From Radish And Fenugreek Improves Resistance Against Leaf Spot Diseases Caused By Cercospora Arachidicola And Phaeoisariopsis Personata In Peanut, Madhu Bala, Thankappan Radhakrishnan, Abhay Kumar, Gyan Prakash Mishra, Jentilal Ramjibhai Dobraia, Pulugurtha Bharadwaja Kirti
Turkish Journal of Biology
No abstract provided.
Squalene Attenuates The Oxidative Stress And Activates Akt/Mtor Pathway Against Cisplatin-Induced Kidney Damage In Mice,
2019
TÜBİTAK
Squalene Attenuates The Oxidative Stress And Activates Akt/Mtor Pathway Against Cisplatin-Induced Kidney Damage In Mice, Ayşe Arzu Şakul, Mehmet Ozansoy, Bi̇rsen Eli̇bol, Şule Ayla, Mehmet Yalçin Günal, Yasemi̇n Yozgat, Selma Hüveyda Başağa, Kazi̇m Şahi̇n, Rümeyza Kazancioğlu, Ülkan Kiliç
Turkish Journal of Biology
The clinical use of cisplatin, which is a first-line anticancer agent, is highly restricted due to its adverse effects on kidneys that lead to nephrotoxicity. Therefore, some potential reno-protective substances have been used in combination with cisplatin to cope with nephrotoxicity. Due to its high antitumor activity and oxygen-carrying capacity, we investigated the molecular effects of squalene against cisplatin-induced oxidative stress and kidney damage in mice. Single dose of cisplatin (7 mg/kg) was given to male Balb/c mice. Squalene (100 mg/kg/day) was administered orogastrically to mice for 10 days. Following sacrification, molecular alterations were investigated as analysis of the levels …
Examining The Involvement Of Slx5 In The Apoptotic Response To Chronic Activation Of The Spindle Assembly Checkpoint,
2019
TÜBİTAK
Examining The Involvement Of Slx5 In The Apoptotic Response To Chronic Activation Of The Spindle Assembly Checkpoint, Pinar Buket Atalay, Eli̇f Ergi̇n Çavuşoğlu, Öykü Aşci, Duygu Aygüneş
Turkish Journal of Biology
Microtubule-targeting agents represent one of the most successful groups of anticancer drugs used in cancer therapy today. These drugs induce a prolonged mitotic arrest through chronic spindle assembly checkpoint (SAC) activation. Apoptosis, an outcome of the prolonged mitotic arrest, is the main mechanism by which these anticancer drugs kill cancer cells. However, not much is known about the mechanism that directs chronic SAC activation to apoptosis among other possible outcomes. The aim of this study is to investigate whether Slx5, a sumo-targeted ubiquitin E3 ligase, is involved in directing chronic SAC activation to apoptosis. We show that chronic SAC activation …
Precipitation And Characterization Of Caco3 Of Bacillus Amyloliquefaciens U17 Strain Producing Urease And Carbonic Anhydrase,
2019
TÜBİTAK
Precipitation And Characterization Of Caco3 Of Bacillus Amyloliquefaciens U17 Strain Producing Urease And Carbonic Anhydrase, Merve Tepe, Şevki̇ Arslan, Tamer Koralay, Nazi̇me Mercan
Turkish Journal of Biology
In the present study, the properties of calcium carbonate mineralization and urease and carbonic anhydrase activities of Bacillus amyloliquefaciens U17 isolated from calcareous soil of Denizli (Turkey) were analyzed. CaCO3 was produced in all growth phases. Strain U17 showed 0.615 ± 0.092 μmol/min/mg urease enzyme activity in calcium mineralization medium and 1.315 ± 0.021 μmol/min/mg urease enzyme activity in Luria-Bertani medium supplemented with urea, whereas it showed 36.03 ± 5.48 nmol/min/ mg carbonic anhydrase enzyme activity in CaCO3 precipitation medium and 28.82 ± 3.31 nmol/min/mg carbonic anhydrase enzyme activity in Luria-Bertani medium supplemented with urea. The urease B protein expression …
Characterization Of Mesenchymal Stem Cells In Mucolipidosis Type Ii (I-Cell Disease),
2019
TÜBİTAK
Characterization Of Mesenchymal Stem Cells In Mucolipidosis Type Ii (I-Cell Disease), Sevi̇l Köse, Fati̇ma Aerts Kaya, Bülent Bariş Kuşkonmaz, Fahri̇ye Duygu Çeti̇nkaya
Turkish Journal of Biology
Mucolipidosis type II (ML-II, I-cell disease) is a fatal inherited lysosomal storage disease caused by a deficiency of the enzyme N-acetylglucosamine-1-phosphotransferase. A characteristic skeletal phenotype is one of the many clinical manifestations of ML-II. Since the mechanisms underlying these skeletal defects in ML-II are not completely understood, we hypothesized that a defect in osteogenic differentiation of ML-II bone marrow mesenchymal stem cells (BM-MSCs) might be responsible for this skeletal phenotype. Here, we assessed and characterized the cellular phenotype of BM-MSCs from a ML-II patient before (BBMT) and after BM transplantation (ABMT), and we compared the results with BM-MSCs from a …
Key Actors In Cancer Therapy: Epigenetic Modifiers,
2019
TÜBİTAK
Key Actors In Cancer Therapy: Epigenetic Modifiers, Remzi̇ Okan Akar, Seli̇n Selvi̇, Engi̇n Ulukaya, Nazlihan Aztopal
Turkish Journal of Biology
Epigenetic reprogramming plays a crucial role in the tumorigenicity and maintenance of tumor-specific gene expression that especially occurs through DNA methylation and/or histone modifications. It has well-defined mechanisms. It is known that alterations in the DNA methylation pattern and/or the loss of specific histone acetylation/methylation markers are related to several hallmarks of cancer, such as drug resistance, stemness, epithelial-mesenchymal transition, and metastasis. It has also recently been highlighted that epigenetic alterations are critical for the regulation of the stemlike properties of cancer cells (tumor-initiating cells; cancer stem cells). Cancer stem cells are thought to be responsible for the recurrence of …
Effects Of B2o3 (Boron Trioxide) On Colon Cancer Cells: Our First-Step Experience And In Vitro Results,
2019
TÜBİTAK
Effects Of B2o3 (Boron Trioxide) On Colon Cancer Cells: Our First-Step Experience And In Vitro Results, Özgür Albuz, Di̇lek Dülger, Beste Çağdaş Tunali, Feray Aydin, Seli̇m Yalçin, Mustafa Türk
Turkish Journal of Biology
Boron oxide (B2O3) is derived from dehydration of boric acid and is a colorless, semitransparent, crystalline compound that is moderately soluble in water. On the other hand, boron oxide is chemically hygroscopic. This gives the molecule the ability to soak up water and adhere to tissues. Boron oxide can be used locally after tumor debulking in inoperable tumors and especially when the tumor-free margin distance cannot be provided. For all these reasons we aimed to evaluate the in vitro test results of B2O3 in terms of cytotoxicity, genotoxicity, apoptosis, and necrotic effects on L929 fibroblast cells and DLD-1 colorectal adenocarcinoma …
Fibrous Bone Tissue Engineering Scaffolds Prepared By Wet Spinning Of Plga,
2019
TÜBİTAK
Fibrous Bone Tissue Engineering Scaffolds Prepared By Wet Spinning Of Plga, Nergi̇s Abay Akar, Görke Gürel Peközer, Gamze Köse
Turkish Journal of Biology
Having a self-healing capacity, bone is very well known to regenerate itself without leaving a scar. However, critical size defects due to trauma, tumor, disease, or infection involve bone graft surgeries in which complication rate is relatively at high levels. Bone tissue engineering appears as an alternative for grafting. Fibrous scaffolds are useful in tissue engineering applications since they have a high surface-to-volume ratio, and adjustable, highly interconnected porosity to enhance cell adhesion, survival, migration, and proliferation. They can be produced in a wide variety of fiber sizes and organizations. Wet spinning is a convenient way to produce fibrous scaffolds …
Microrna Prediction Based On 3d Graphical Representation Of Rnasecondary Structures,
2019
TÜBİTAK
Microrna Prediction Based On 3d Graphical Representation Of Rnasecondary Structures, Müşerref Duygu Saçar Demi̇rci̇
Turkish Journal of Biology
MicroRNAs (miRNAs) are posttranscriptional regulators of gene expression. While a miRNA can target hundreds of messenger RNA (mRNAs), an mRNA can be targeted by different miRNAs, not to mention that a single miRNA might have various binding sites in an mRNA sequence. Therefore, it is quite involved to investigate miRNAs experimentally. Thus, machine learning (ML) is frequently used to overcome such challenges. The key parts of a ML analysis largely depend on the quality of input data and the capacity of the features describing the data. Previously, more than 1000 features were suggested for miRNAs. Here, it is shown that …
Keratin 14 Is A Novel Interaction Partner Of Keratinocyte Differentiation Regulator:Receptor-Interacting Protein Kinase 4,
2019
TÜBİTAK
Keratin 14 Is A Novel Interaction Partner Of Keratinocyte Differentiation Regulator:Receptor-Interacting Protein Kinase 4, Ceren Sümer, Asi̇ye Büşra Boz Er, Tuba Di̇nçer
Turkish Journal of Biology
The epidermis, the outer layer of the skin, is formed by stratified keratinocyte layers. The self-renewal of the epidermis is provided by sustained proliferation and differentiation of the keratinocyte stem cells localized to the basal layer of the epidermis. Receptorinteracting protein kinase 4 (RIPK4) is an important regulator of keratinocyte differentiation, mutations of which are associated with congenital ectodermal malformations. In an attempt to identify the molecular basis of RIPK4's function, we applied yeast two-hybrid screen (Y2H) and found basal layer-specific keratin filament component keratin 14 (KRT14) as a novel RIPK4-interacting partner. During keratinocyte differentiation, layer-specific keratin composition is tightly …
A Novel 1,4-Naphthoquinone-Derived Compound Induces Apoptotic Cell Deathin Breast Cancer Cells,
2019
TÜBİTAK
A Novel 1,4-Naphthoquinone-Derived Compound Induces Apoptotic Cell Deathin Breast Cancer Cells, Di̇dem Karakaş Zeybek, Remzi̇ Okan Akar, Zeli̇ha Gökmen, Nahi̇de Gülşah Deni̇z, Engi̇n Ulukaya
Turkish Journal of Biology
Breast cancer is the most-diagnosed cancer type among women. The triple-negative subtype is an especially aggressive type of breast cancer. Although chemotherapy is almost the only option for the treatment of triple-negative breast cancer (TNBC), currently used chemotherapeutics are not effective enough, considering the poor survival rate of patients. Therefore, novel compounds need to be developed to improve survival rates. It has been known that quinonic compounds, which are found in nature, have antibacterial, antifungal, and antitumorigenic properties. Naphthoquinones are members of the quinone family and are widely used in research due to their promising properties. In this study, we …
A Magnetic Affinity Approach To Identify Plant Gaba-Binding Proteins,
2019
TÜBİTAK
A Magnetic Affinity Approach To Identify Plant Gaba-Binding Proteins, Jie Zou, Jingzhe Guo, Shisheng Li
Turkish Journal of Biology
In plants, GABA plays a critical role in sexual plant reproduction; however, GABA receptors and the associated detailed signaling mechanisms remain to be elucidated. Our experiments show that the proposed technique is reliable and convenient for probing GABA-binding proteins and could be applicable in similar projects by covalently immobilizing the free carboxylic group of GABA on magnetic beads (SiMAG-Carboxyl). New probes produced by covalently immobilizing the free carboxylic group of GABA on magnetic beads (SiMAG-Carboxyl) can obtain useful information on GABA receptors in plants.
Characterizing Microsatellite Polymorphisms Using Assembly-Based Andmapping-Based Tools,
2019
TÜBİTAK
Characterizing Microsatellite Polymorphisms Using Assembly-Based Andmapping-Based Tools, Gülfem Demi̇r, Can Alkan
Turkish Journal of Biology
Microsatellite polymorphism has always been a challenge for genome assembly and sequence alignment due to sequencing errors, short read lengths, and high incidence of polymerase slippage in microsatellite regions. Despite the information they carry being very valuable, microsatellite variations have not gained enough attention to be a routine step in genome sequence analysis pipelines. After the completion of the 1000 Genomes Project, which aimed to establish the most detailed genetic variation catalog for humans, the consortium released only two microsatellite prediction sets generated by two tools. Many other large research efforts have failed to shed light on microsatellite variations. We …
Knockdown Of Set Domain, Bifurcated 1 Suppresses Head And Neck Cancer Cell Viability And Wound-Healing Ability In Vitro,
2019
TÜBİTAK
Knockdown Of Set Domain, Bifurcated 1 Suppresses Head And Neck Cancer Cell Viability And Wound-Healing Ability In Vitro, Si̇bel Özdaş
Turkish Journal of Biology
Head and neck cancer (HNC) is the sixth most common cancer worldwide and therefore presents a global public health problem. There are no standard algorithms for the diagnosis and follow-up of the disease, and no effective current treatment approaches exist. Therefore, the discovery of new biomolecules and the design of new strategies to aid in early diagnosis is necessary, along with establishing prognostic factors of HNC. In several cancer studies, the upregulation of SET Domain, Bifurcated 1 (SETDB1) has been reported to be tumor-inducing and to indicate a cancer-invasive prognosis, leading to the modulation of genes associated with different signaling …
Prenatal Exposure Of Diclofenac Sodium Alters The Behavioral Development Of Young Wistar Rats,
2019
TÜBİTAK
Prenatal Exposure Of Diclofenac Sodium Alters The Behavioral Development Of Young Wistar Rats, Bi̇rsen Eli̇bol, Begüm Oğur, Havva Doğru
Turkish Journal of Biology
Diclofenac sodium (DS), a potent inhibitor of cyclooxygenase, reduces the release of arachidonic acid and formation of prostaglandins. Being a nonsteroid drug that shows antiinflammatory action, the possible side effects of fetal DS administration gain importance in public and medical applications. Herein, the effects of DS administration (1 mg/kg) during gestational days 5-20 were investigated on the performance of Wistar rat pups in a variety of behavioral tasks. Four-week-old pups were subjected to sensory motor tests, a plus maze, an open field, the Morris water maze, and a radial arm maze. Fetal DS disrupted some sensory motor performances, such as …
Proteomic And Physiological Responses In Mangrove Kandelia Candel Roots Under Short-Term High-Salinity Stress,
2019
TÜBİTAK
Proteomic And Physiological Responses In Mangrove Kandelia Candel Roots Under Short-Term High-Salinity Stress, Jianhong Xing, Dezhuo Pan, Lingxia Wang, Fanglin Tan, Wei Chen
Turkish Journal of Biology
Kandelia candel is one of the mangrove species that are most resistant to environmental stress. As a typical nonsalt-secreting mangrove plant, K. candel is an ideal biological material to analyze the molecular mechanism of salt tolerance in woody plants. In this study, changes in protein abundance and expression profile in K. candel roots under high-salinity stress of 600 mmol L-1 NaCl were analyzed using isobaric tags for relative and absolute quantification (iTRAQ) assay. Moreover, the physiological parameters associated with metabolic pathways in which the differentially abundant proteins (DAPs) are involved were determined. A total of 5577 proteins were identified by …
A New Helicoverpa Armigera Nucleopolyhedrovirus Isolate From Heliothis Peltigera (Denis & Schiffermuller) (Lepidoptera: Noctuidae) In Turkey, Gözde Büşra Eroğlu, Remzi̇ye Nalçacioğlu, Zi̇hni̇ Demi̇rbağ
Turkish Journal of Biology
This study reports a new Helicoverpa armigera nucleopolyhedrovirus (NPV) isolated from Heliothis peltigera (Denis & Schiffermuller), collected in the vicinity of Adana, Turkey. Infection was confirmed by tissue polymerase chain reaction and sequence analysis. Results showed that dead H. peltigera larvae contain Helicoverpa armigera nucleopolyhedrovirus. Thus, the isolate was named as HearNPV-TR. Microscopy studies indicated that occlusion bodies were 0.73 to 1.66 μm in diameter. The nucleocapsids are approximately 184 × 41 nm in size. The genome of HearNPV-TR was digested with KpnI and XhoI enzymes and calculated as 130.5 kb. Phylogenetic analysis showed that HearNPV-TR has close relation with …
E2f6 Is Essential For Cell Viability In Breast Cancer Cells During Replication Stress,
2019
TÜBİTAK
E2f6 Is Essential For Cell Viability In Breast Cancer Cells During Replication Stress, Inam Lafta
Turkish Journal of Biology
E2F6 is a member of the E2F family of transcription factors involved in regulation of a wide variety of genes through both activation and repression. E2F6 has been reported as overexpressed in breast cancers but whether or not this is important for tumor development is unclear. We first checked E2F6 expression in tumor cDNAs and the protein level in a range of breast cancer cell lines. RNA interference-mediated depletion was then used to assess the importance of E2F6 expression in cell lines with regard to cell cycle profile using fluorescence-activated cell sorting and a cell survival assay using (3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide …
Cytotoxic And Genotoxic Action Of Tagetes Patula Flower Methanol Extract And Patuletin Using The Allium Test,
2019
TÜBİTAK
Cytotoxic And Genotoxic Action Of Tagetes Patula Flower Methanol Extract And Patuletin Using The Allium Test, Mudassar Azhar, Ahsana Dar Farooq, Sayedul Haque, Samina Bano, Lubna Zaheer, Shaheen Faizi
Turkish Journal of Biology
Tagetes patula is used to treat cancer patients in alternative healthcare systems. However, its cytotoxic and genotoxic effects have not been reported. Therefore, the methanol extract of T. patula flower, the ethyl acetate fraction, and the pure compound patuletin were evaluated using the Allium test. The methanol extract and fraction contained ~3% and ~36% patuletin, respectively, with ~98% purity. The methanol extract caused inhibition of Allium root growth displaying an IC50 value of ~500 μg/mL, while the fraction and patuletin were more potent by ~2 and ~5 times, respectively. The Allium root tips demonstrated a decline in prophase, metaphase, anaphase, …
