The Development of Epigenetics and Related Inhibitors for Targeted Drug Design in Cancer Therapy

2019 ◽  
Vol 18 (28) ◽  
pp. 2380-2394 ◽  
Author(s):  
Na Liu ◽  
Rongtong Zhao ◽  
Yue Ma ◽  
Dongyuan Wang ◽  
Chen Yan ◽  
...  

Epigenetics process is the heritable change in gene function that does not involve changes in the DNA sequence. Until now, several types of epigenetic mechanisms have been characterized, including DNA methylation, histone modification (acetylation, methylation, etc.), nucleosome remodeling, and noncoding RNAs. With the biological investigations of these modifiers, some of them are identified as promoters in the process of various diseases, such as cancer, cardiovascular disease and virus infection. Epigenetic changes may serve as potential “first hits” for tumorigenesis. Hence, targeting epigenetic modifiers is being considered as a promising way for disease treatment. To date, six agents in two epigenetic target classes (DNMT and HDAC) have been approved by the US Food and Drug Administration (FDA). Most of these drugs are applied in leukemia, lymphoma therapy, or are combined with other drugs for the treatment of solid tumor. Due to the rapid development of epigenetics and epigenetics targeted drugs, it is becoming an emerging area in targeted drug design.

Author(s):  
Seth C Kalichman ◽  
Lisa A Eaton ◽  
Valerie A Earnshaw ◽  
Natalie Brousseau

Abstract Background The unprecedented rapid development of COVID-19 vaccines has faced SARS-CoV- (COVID-19) vaccine hesitancy, which is partially fueled by the misinformation and conspiracy theories propagated by anti-vaccine groups on social media. Research is needed to better understand the early COVID-19 anti-vaccine activities on social media. Methods This study chronicles the social media posts concerning COVID-19 and COVID-19 vaccines by leading anti-vaccine groups (Dr Tenpenny on Vaccines, the National Vaccine Information Center [NVIC] the Vaccination Information Network [VINE]) and Vaccine Machine in the early months of the COVID-19 pandemic (February–May 2020). Results Analysis of 2060 Facebook posts showed that anti-vaccine groups were discussing COVID-19 in the first week of February 2020 and were specifically discussing COVID-19 vaccines by mid-February 2020. COVID-19 posts by NVIC were more widely disseminated and showed greater influence than non-COVID-19 posts. Early COVID-19 posts concerned mistrust of vaccine safety and conspiracy theories. Conclusion Major anti-vaccine groups were sowing seeds of doubt on Facebook weeks before the US government launched its vaccine development program ‘Operation Warp Speed’. Early anti-vaccine misinformation campaigns outpaced public health messaging and hampered the rollout of COVID-19 vaccines.


2007 ◽  
Vol 2 (1) ◽  
pp. 73-92 ◽  
Author(s):  
Michael K. Gusmano ◽  
Victor G. Rodwin ◽  
Daniel Weisz ◽  
Dhiman Das

Cross-national comparisons that assess dimensions of health system performance indicate that the US provides higher rates of revascularization procedures than France and other developed nations, but we believe these findings are misleading. In this paper, we compare the use of these procedures in the US, France and their two world cities, Manhattan and Paris. In doing so, we address a number of limitations associated with existing cross-national comparisons of heart disease treatment. After adjusting for the prevalence of disease in these nations and cities, we found that residents of France aged 45–64 years receive more revascularization procedures than residents of the US and that Parisians receive more revascularizations than residents of Manhattan. Older residents 65 years and over (65+) in the US receive more of these procedures than their French counterparts, but the differences are not nearly as great as previous studies suggest. Moreover, our data on Manhattan and Paris where the population and level of health resources are more comparable, indicate that older Parisians obtain more revascularization procedures than older Manhattanites. Finally, we found that the use of revascularization procedures is significantly lower in Manhattan among persons without private health insurance and among racial and ethnic minorities.


2021 ◽  
Vol 21 (4) ◽  
pp. 772-784
Author(s):  
Yury V. Borovsky

In the early 2020s the worlds transition from carbon-intensive to climate-neutral energy use has already become a discernible and a difficult-to-reverse process. With Joe Bidens election as US president, the United States have returned to the Paris Climate Agreement and have become a key driver of this process (along with the EU and China). As a result, the international community has reached a consensus on the ongoing energy transition. This process will require considerable effort and may take several decades. Nevertheless, the impact of energy transition on traditional approaches to energy security, which emerged largely as a result of the global oil crises of the 1970s and 1980s and are centered around the supply of fossil fuels, is already a relevant research topic. This problem is examined relying on the relevant terminological, theoretical and factual material. The article concludes that energy transition will ultimately undermine the carbon paradigm that has underpinned energy security policies since the 1970s. Rapid development of renewable and other low-carbon energy sources will certainly remove key energy security risks of energy importers and, possibly, allow them to achieve energy independence. However, a post-carbon era may also generate new risks. For countries that rely heavily on oil, gas and coal exports, energy transition will result in the loss of markets and revenues. It may present an energy security threat for them as well as it will require a costly and technologically complex process of the energy sector decarbonization. Some exporters, especially those with high fuel rents and insufficient financial reserves, may face serious economic and social upheavals as a result of energy transition. The EU and the US energy transition policies reflect provisions of all three fundamental international relations theoretical paradigms, including realism. This means that the EU and the US policy, aimed at promoting climate agenda, may be expected to be rather tough and aggressive. China as the third key player in energy transition is still following a liberal course; however, it may change in the future.


Nanomaterials ◽  
2019 ◽  
Vol 9 (12) ◽  
pp. 1749 ◽  
Author(s):  
Kiran Saleem ◽  
Zainab Khursheed ◽  
Christophe Hano ◽  
Iram Anjum ◽  
Sumaira Anjum

Leishmaniasis is a widely distributed protozoan vector-born disease affecting almost 350 million people. Initially, chemotherapeutic drugs were employed for leishmania treatment but they had toxic side effects. Various nanotechnology-based techniques and products have emerged as anti-leishmanial drugs, including liposomes, lipid nano-capsules, metal and metallic oxide nanoparticles, polymeric nanoparticles, nanotubes and nanovaccines, due to their unique properties, such as bioavailability, lowered toxicity, targeted drug delivery, and biodegradability. Many new studies have emerged with nanoparticles serving as promising therapeutic agent for anti-leishmanial disease treatment. Liposomal Amphotericin B (AmB) is one of the successful nano-based drugs with high efficacy and negligible toxicity. A new nanovaccine concept has been studied as a carrier for targeted delivery. This review discusses different nanotechnology-based techniques, materials, and their efficacies in leishmaniasis treatment and their futuristic improvements.


1993 ◽  
Vol 14 (10) ◽  
pp. 385-386
Author(s):  
James M. Veal

Sign in / Sign up

Export Citation Format

Share Document