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https://www.readbyqxmd.com/read/28730292/efficacy-and-safety-of-taxane-monotherapy-in-advanced-gastric-cancer-refractory-to-triplet-chemotherapy-with-docetaxel-cisplatin-and-s-1-a-multicenter-retrospective-study
#1
Sakura Iizumi, Atsuo Takashima, Yukiya Narita, Masahiro Tajika, Kei Muro, Sadayuki Kawai, Hirofumi Yasui, Tomohiro Matsushima, Daisuke Takahari, Kengo Nagashima, Narikazu Boku
PURPOSE: Taxane monotherapy is widely used for advanced gastric cancer (AGC) after failure of standard first-line chemotherapy with fluoropyrimidine and cisplatin. Triplet chemotherapy with docetaxel, cisplatin, and S-1 (DCS) is a promising regimen for first-line chemotherapy of AGC. The aim of this study was to evaluate the efficacy of taxane monotherapy in patients refractory to DCS. METHODS: We retrospectively evaluated the efficacy and safety of taxane monotherapy in patients with AGC refractory to first-line therapy with DCS between January 2010 and April 2015...
July 20, 2017: Cancer Chemotherapy and Pharmacology
https://www.readbyqxmd.com/read/28726387/aryl-substituted-ruthenium-ii-complexes-a-strategy-for-enhanced-photocleavage-and-efficient-dna-binding
#2
Felipe Diógenes Abreu, Tercio de F Paulo, Marcelo H Gehlen, Rômulo A Ando, Luiz G F Lopes, Ana Cláudia S Gondim, Mayron A Vasconcelos, Edson H Teixeira, Eduardo Henrique Silva Sousa, Idalina Maria Moreira de Carvalho
Ruthenium polypyridine complexes have shown promise as agents for photodynamic therapy (PDT) and tools for molecular biology (chromophore-assisted light inactivation). To accomplish these tasks, it is important to have at least target selectivity and great reactive oxygen species (ROS) photogeneration: two properties that are not easily found in the same molecule. To prepare such new agents, we synthesized two new ruthenium complexes that combine an efficient DNA binding moiety (dppz ligand) together with naphthyl-modified (1) and anthracenyl-modified (2) bipyridine as a strong ROS generator bound to a ruthenium complex...
July 20, 2017: Inorganic Chemistry
https://www.readbyqxmd.com/read/28725278/asco-2016-update-colorectal-liver-metastases
#3
REVIEW
Klaus Kaczirek
This short review summarizes the most relevant data on colorectal liver metastases (CLM) presented at the 2016 Annual Meeting of the American Society of Clinical Oncology (ASCO). For this update, congress abstracts were grouped into three clinically relevant scenarios: CLM that are deemed upfront resectable, borderline resectable, and primarily unresectable. According to a large registry study, small, upfront resectable, solitary CLM should be resected using a parenchymal sparing technique. A prospective noninterventional study suggested that chemotherapy plus the anti-VEGF (vascular endothelial growth factor) antibody bevacizumab is effective and well tolerated in patients with borderline resectable CLM...
2017: Memo
https://www.readbyqxmd.com/read/28721065/optimizing-the-treatment-of-bevacizumab-as-first-line-therapy-for-human-epidermal-growth-factor-receptor-2-her2-negative-advanced-breast-cancer-an-updated-meta-analysis-of-published-randomized-trials
#4
Cunfu Li, Aizhai Xiang, Xianzhi Chen, Kai Yin, Jinsong Lu, Wenjin Yin
BACKGROUND: Manifold data have demonstrated that the addition of bevacizumab to chemotherapy improved progression-free survival (PFS), while few trials have revealed its significant overall survival (OS) benefit. Furthermore, it still remains suspended how to maximize the benefits of bevacizumab as first-line therapy for human epidermal growth factor receptor 2 (HER2)-negative breast cancer. We sought to conduct a meta-analysis to assess the benefits of bevacizumab with chemotherapy and to identify the ideal chemotherapy partner of bevacizumab in the first-line setting for HER2-negative advanced breast cancer patients...
2017: OncoTargets and Therapy
https://www.readbyqxmd.com/read/28698469/potential-of-integrin-inhibitors-for-treating-ovarian-cancer-a-literature-review
#5
REVIEW
Masaki Kobayashi, Kenjiro Sawada, Tadashi Kimura
Epithelial ovarian cancer is a fatal disease, with a cure rate of only 30%. Several recent studies have targeted integrins for cancer treatment. Preclinical studies have shown the effectiveness of several integrin inhibitors for blocking cancer progression, especially by blocking angiogenesis. Because the initial critical step in ovarian cancer metastasis is the attachment of cancer cells to the peritoneum or omentum and because clinical trials have provided positive results for anti-angiogenic therapy, therapies targeting integrins may be the most feasible approach for treating cancer...
July 8, 2017: Cancers
https://www.readbyqxmd.com/read/28678836/epistasis-in-genomic-and-survival-data-of-cancer-patients
#6
Dariusz Matlak, Ewa Szczurek
Cancer aggressiveness and its effect on patient survival depends on mutations in the tumor genome. Epistatic interactions between the mutated genes may guide the choice of anticancer therapy and set predictive factors of its success. Inhibitors targeting synthetic lethal partners of genes mutated in tumors are already utilized for efficient and specific treatment in the clinic. The space of possible epistatic interactions, however, is overwhelming, and computational methods are needed to limit the experimental effort of validating the interactions for therapy and characterizing their biomarkers...
July 2017: PLoS Computational Biology
https://www.readbyqxmd.com/read/28678497/excited-state-dynamics-of-a-photobiologically-active-ru-ii-dyad-are-altered-in-biologically-relevant-environments
#7
Christian Reichardt, Kilian R A Schneider, Tariq Sainuddin, Maria Wächtler, Sherri A McFarland, Benjamin Dietzek
In this study femtosecond and nanosecond time-resolved transient absorption spectroscopy was used to investigate the influence of ionic strength and complexity on the excited state dynamics of a Ru(II)-based metal-organic dyad. The bis-heteroleptic complex [Ru(bpy)2(ippy)]2+ (1), where bpy=2,2'-bipyridine and ippy=2-(1-pyrenyl-1H-imidazo[4,5-f][1,10]phenanthroline, is a potent photosensitizer for in vitro photodynamic therapy (PDT) and photodynamic inactivation (PDI) of microorganisms owing to a long-lived triplet excited state derived from a metal-to-ligand charge transfer (3MLCT) state that is equilibrium with an intraligand (3IL) state...
July 5, 2017: Journal of Physical Chemistry. A
https://www.readbyqxmd.com/read/28665328/metal-atom-effect-on-the-photophysical-properties-of-mg-ii-zn-ii-cd-ii-and-pd-ii-tetraphenylporphyrin-complexes-proposed-as-possible-drugs-in-photodynamic-therapy
#8
Bruna Clara De Simone, Gloria Mazzone, Nino Russo, Emilia Sicilia, Marirosa Toscano
The effects of Mg, Zn, Cd, and Pd dications on the photophysical properties of the tetraphenylporphyrin ligand have been explored, considering the corresponding complexes and by using the density functional theory and its time-dependent extension. Results show that absorption wavelengths do not change significantly when the metal ion changes contrary to what happens to the singlet-triplet energy gaps (ΔES-T) and the spin-orbit matrix elements ΨSnHsoΨTm. The most probable intersystem spin crossing (ISC) pathways for the population of the lowest triplet states have been explored...
June 30, 2017: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/28664431/investigation-of-operative-outcomes-of-thoracoscopic-esophagectomy-after-triplet-chemotherapy-with-docetaxel-cisplatin-and-5-fluorouracil-for-advanced-esophageal-squamous-cell-carcinoma
#9
Yuji Akiyama, Takeshi Iwaya, Fumitaka Endo, Takehiro Chiba, Takeshi Takahara, Koki Otsuka, Hiroyuki Nitta, Keisuke Koeda, Masaru Mizuno, Yusuke Kimura, Akira Sasaki
BACKGROUND: Preoperative chemotherapy with cisplatin and 5-fluorouracil (CF) has become the standard treatment for resectable stage II/III thoracic esophageal carcinoma in Japan. Recently, preoperative triplet chemotherapy with docetaxel, cisplatin, and 5-fluorouracil (DCF) has been reported to be effective for locally advanced esophageal cancer. Thoracoscopic esophagectomy (TE) has been increasingly accepted worldwide for the treatment of esophageal cancer. We conducted a retrospective study to evaluate the safety and outcomes of TE after DCF therapy for patients with advanced esophageal cancer...
June 29, 2017: Surgical Endoscopy
https://www.readbyqxmd.com/read/28642346/detergent-induced-self-assembly-and-controllable-photosensitizer-activity-of-diester-phenylene-ethynylenes
#10
Patrick L Donabedian, Matthew N Creyer, Florencia A Monge, Kirk S Schanze, Eva Y Chi, David G Whitten
Photodynamic therapy, in which malignant tissue is killed by targeted light exposure following administration of a photosensitizer, can be a valuable treatment modality but currently relies on passive transport and local irradiation to avoid off-target oxidation. We present a system of excited-state control for truly local delivery of singlet oxygen. An anionic phenylene ethynylene oligomer is initially quenched by water, producing minimal fluorescence and no measurable singlet oxygen generation. When presented with a binding partner, in this case an oppositely charged surfactant, changes in solvent microenvironment result in fluorescence unquenching, restoration of intersystem crossing to the triplet state, and singlet oxygen generation, as assayed by transient absorption spectroscopy and chemical trapping...
July 11, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28633036/recent-advances-in-understanding-multiple-myeloma
#11
REVIEW
Parameswaran Hari
There have been major recent advancements in the understanding and management of multiple myeloma which in turn has led to unprecedented survival outcomes for patients. Diagnostic and response criteria have been recently revised. Our understanding of clonal progression, evolution, and clonal tides will inform therapeutic choices and appropriate treatment for patients. Response rates to initial induction with modern triplet therapies containing proteasome inhibitors and immunomodulators have made this approach the global standard for initial treatment...
June 13, 2017: Hematology/oncology and Stem Cell Therapy
https://www.readbyqxmd.com/read/28626897/ultrastable-near-infrared-conjugated-polymer-nanoparticles-for-dually-photoactive-tumor-inhibition
#12
Tao Yang, Ling Liu, Yibin Deng, Zhengqing Guo, Guobing Zhang, Zhishen Ge, Hengte Ke, Huabing Chen
It is highly desired that satisfactory photoactive agents with ideal photophysical characteristics are explored for potent cancer phototherapeutics. Herein, bifunctional nanoparticles of low-bandgap donor-acceptor (D-A)-type conjugated-polymer nanoparticles (CP-NPs) are developed to afford a highly efficient singlet-to-triplet transition and photothermal conversion for near-infrared (NIR) light-induced photodynamic (PDT)/photothermal (PTT) treatment. CP-NPs display remarkable NIR absorption with the peak at 782 nm, and perfect resistance to photobleaching...
June 19, 2017: Advanced Materials
https://www.readbyqxmd.com/read/28604869/near-infrared-emitting-heteroleptic-cationic-iridium-complexes-derived-from-2-3-diphenylbenzo-g-quinoxaline-as-in-vitro-theranostic-photodynamic-therapy-agents
#13
Li Wang, Huimin Yin, Peng Cui, Marc Hetu, Chengzhe Wang, Susan Monro, Richard D Schaller, Colin G Cameron, Bingqing Liu, Svetlana Kilina, Sherri A McFarland, Wenfang Sun
Five heteroleptic cationic iridium complexes with a π-expansive cyclometalating 2,3-diphenylbenzo[g]quinoxaline (dpbq) ligand (C^N ligand) and different diimine ligands (N^N ligands) (i.e. 2,2'-bipyridine (bpy, 1), phenanthroline (phen, 2), 2-(2-pyridinyl)quinoline (pqu, 3), 2,2'-bisquinoline (bqu, 4), and 2-(quinolin-2-yl)quinoxaline (quqo, 5)) were synthesized and characterized. The lowest-energy singlet electronic transitions (S1 states) were mainly dpbq ligand-centred (1)ILCT (intraligand charge transfer)/(1)MLCT (metal to ligand charge transfer) transitions mixed with some (1)π,π* transitions for complexes 1-4 with increased contributions from (1)LLCT (ligand to ligand charge transfer) in 3 and 4...
June 27, 2017: Dalton Transactions: An International Journal of Inorganic Chemistry
https://www.readbyqxmd.com/read/28576843/targeting-braf-mutant-colorectal-cancer-progress-in-combination-strategies
#14
Raghav Sundar, David S Hong, Scott Kopetz, Timothy A Yap
BRAF mutations in colorectal cancer portend a poor prognosis, with first-line treatment often involving triplet or quadruplet chemotherapy, and single-agent targeted therapy with BRAF inhibitors failing to demonstrate clinical activity. Blockade of multiple critical nodes along the MAPK and other pathways may be necessary to improve response rates and survival. Cancer Discov; 7(6); 558-60. ©2017 AACR.See related article by van Geel et al., p. 610.
June 2017: Cancer Discovery
https://www.readbyqxmd.com/read/28573143/combination-of-neuroprotective-and-regenerative-agents-for-age-induced-retinal-degeneration-in-vitro-study
#15
Guzel Bikbova, Toshiyuki Oshitari, Takayuki Baba, Shuichi Yamamoto
To determine the most effective combination of neuroprotective and regenerative agents for cultured retinal neurons from advanced glycation end products- (AGEs-) induced degeneration, retinal explants of 7 adult Sprague-Dawley rats were three-dimensionally cultured in collagen gel and incubated in serum-free media and in 7 media; namely, AGEs, AGEs + 100 μM citicoline, AGEs + 10 ng/mL NT-4, AGEs + 100 μM TUDCA, AGEs + 100 μM citicoline + TUDCA (doublet), and AGEs + 100 μM citicoline + TUDCA + 10 ng/mL NT-4 (triplet) were examined...
2017: BioMed Research International
https://www.readbyqxmd.com/read/28556890/recent-progress-in-relapsed-multiple-myeloma-therapy-implications-for-treatment-decisions
#16
REVIEW
Philippe Moreau, Edwin de Wit
The availability of novel therapies for the treatment of multiple myeloma has had a dramatic impact on the depth of response that can be expected on initial treatment. Despite these advances, disease relapse remains inevitable in most patients and brings with it a different set of priorities for therapy. The most recent wave of novel agents may have a particular impact in the relapsed setting. In this review, we examine the evidence currently available from clinical trials for the use of novel agents, particularly in the formation of triplet therapy...
May 30, 2017: British Journal of Haematology
https://www.readbyqxmd.com/read/28542671/folfoxiri-plus-bevacizumab-as-conversion-therapy-for-patients-with-initially-unresectable-metastatic-colorectal-cancer-a-systematic-review-and-pooled-analysis
#17
Gianluca Tomasello, Fausto Petrelli, Michele Ghidini, Alessandro Russo, Rodolfo Passalacqua, Sandro Barni
Importance: The combination of fluorouracil, oxaliplatin, and irinotecan plus bevacizumab (FOLFOXIRI-Bev) is an established and effective first-line chemotherapy regimen for metastatic colorectal cancer. However, resection rates of metastases and overall survival with this schedule have never been systematically evaluated in published studies including, but not limited to, the TRIBE (TRIplet plus BEvacizumab) trial. Objective: To assess the clinical efficacy of FOLFOXIRI-Bev, including outcomes and rates of surgical conversions...
May 25, 2017: JAMA Oncology
https://www.readbyqxmd.com/read/28541049/synthesis-and-photophysical-and-photocatalytic-properties-of-a-highly-fluorinated-and-durable-phthalocyanine-peptide-bioconjugate-for-potential-theranostic-applications
#18
Erik N Carrión, Jenyffer Santiago, David Sabatino, Sergiu M Gorun
The functionalized, asymmetric fluoro-fluoroalkyl scaffold F48H7COOHPcZn (3) was used to prepare F48H7COOPcZn-6-amino-hexanoate-CTVALPGGYVRVC (5), a Pep42 peptide bioconjugate envisioned for photodynamic therapy, which can specifically target the GRP78 chaperone protein overexpressed and exclusively localized on some cancer cell surfaces. The analogous F48H7COOHPcCu (4) has also been prepared, and its single-crystal X-ray structure was elucidated. Despite reduced steric hindrance relative to the nonfunctionalized, single-site complexes of the F64Pc scaffold, no aggregation was detected in solution via UV-vis spectroscopy, for either 3, 4, or 5, consistent with the lack of π stacking observed for the crystalline 4...
May 25, 2017: Inorganic Chemistry
https://www.readbyqxmd.com/read/28493933/direct-estrogen-receptor-er-her-family-crosstalk-mediating-sensitivity-to-lumretuzumab-and-pertuzumab-in-er-breast-cancer
#19
Denis Collins, Wolfgang Jacob, Juan Miguel Cejalvo, Maurizio Ceppi, Ian James, Max Hasmann, John Crown, Andrés Cervantes, Martin Weisser, Birgit Bossenmaier
Bidirectional cross talk between members of the human epidermal growth factor family of receptors (HER) and the estrogen receptor (ER) is believed to underlie resistance mechanisms that develop in response to treatment with anti-HER agents and endocrine therapy. We investigated the interaction between HER2, HER3 and the ER in vitro using human embryonic kidney cells transfected with human HER2, HER3, and ERα. We also investigated the additive efficacy of combination regimens consisting of anti-HER3 (lumretuzumab), anti-HER2 (pertuzumab), and endocrine (fulvestrant) therapy in vivo...
2017: PloS One
https://www.readbyqxmd.com/read/28485948/bodipy-au-i-a-photosensitizer-for-singlet-oxygen-generation-and-photodynamic-therapy
#20
Muhammed Üçüncü, Erman Karakuş, Eylem Kurulgan Demirci, Melike Sayar, Suay Dartar, Mustafa Emrullahoğlu
Upon complexation with Au(I), a photoinactive BODIPY derivative was transformed into a highly photoactive triplet sensitizer. Along with high efficiency in singlet oxygen generation (ΦΔ = 0.84), the new BODIPY-Au(I) skeleton showed excellent photocytotoxic activity against cancer cell lines (EC50 = 2.5 nM).
May 9, 2017: Organic Letters
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