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Engineering - PubMed

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Last Updated: 05 July 2022

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Acceptor engineering for NIR-II dyes with high photochemical and biomedical performance.

We find an electron acceptor, 6,7-di-[1,2,5] thiadiazolo[3,4-g]quinoxaline with the most stability in alkaline environments, in comparison to conventional NIR-II building block benzobisthiadiazole and 6,7-g]quinoxaline, and 6,7-g]quinoxaline. NIR-II fluorescent imaging allows for dynamic tracking of tumor vascular disruption following drug therapy. Overall, TQT is a highly reliable electron acceptor for the manufacture of innovative NIR-II dyes. The acceptor engineering plan provides a promising start to produce the next generation of NIR-II fluorophores, which can be used in new biomedical applications.

Source link: https://doi.org/10.1038/s41467-022-31521-y


Insights into the use of genetically modified decellularized biomaterials for tissue engineering and regenerative medicine.

The decellularization process removes most living cells from biomaterials to minimize their immunogenicity; while maintaining the native structures and compositions that promote cell growth and subsequent tissue construction as a solution to this issue. Genetic engineering of biomaterials, on the other hand, aims to achieve particular functions or analyze the genetic causes of some diseases.

Source link: https://doi.org/10.1016/j.addr.2022.114413


Modulating the pH profile of the pullulanase from Pyrococcus yayanosii CH1 by synergistically engineering the active center and surface.

The optimal pH of the hyperthermostable pullulanase from Pyrococcus yayanosii was successfully changed from 6. 4 to 5 with a two-fold increase in the specific activity based on synergistic engineering of the active center and surface. The optimal pH of PulPY2-Q13H and PulPY2-I25E were found on two single-site mutants of PulPY2-Q13H and PulPY2-I25E, with higher hydrolytic activity, respectively; the optimal pH of which was changed to pH 5 and 5. 4 were obtained; the combined mutant PulPY2-Q13H and PulPY2-I25E displayed the highest catalytic sensitivity at pH 5, 3. 2-fold increasing thermostability compared to PulPY2-M2E optimum pH 5 and optimum pH 5. 6, 2. 4E alytic activity at pH 2. 4; pH of pH &PY2-I25E with elevated at pH 2. 4, 1. 4, X2E optimum pH of pH 5. 6, pH 5 and 5. 6, 2. 2-Strail, 2. 1-PY2-Q25E with increased catalytic activity at pH 5 and 2. 4, 3. 2-PY2-Q5E with increased catalytic 1. 8-I25E; and optimum pH 5, 7. 2;.

Source link: https://doi.org/10.1016/j.ijbiomac.2022.06.151


Engineering Grain Boundaries in Two-dimensional Electronic Materials.

Engineering the boundary structures in two-dimensional materials provides unprecedented opportunity to study the physical properties of the materials with extensive tunability and produce innovative devices with high functionality. However, structural engineering technology is still in its infancy, and creating artificial boundary structures with high reproducibility is difficult.

Source link: https://doi.org/10.1002/adma.202203425


Nanomaterial-based cell sheet technology for regenerative medicine and tissue engineering.

Nanomaterial-based cell sheet technology has been shown to be a cost-effective strategy in regenerative medicine and tissue engineering. Here, we outlined several types of nanomaterials used to produce cell sheets. Based on the system, light-induced cell sheet technology, thermo-responsive cell sheet fabrication, magnetic-controlled cell sheet fabrication, and reactive oxygen species-induced cell sheet technology are divided into four categories.

Source link: https://doi.org/10.1016/j.colsurfb.2022.112661


Genetic engineering of extremely acidophilic Acidithiobacillus species for biomining: Progress and perspectives.

Microorganisms have been increasingly used in biomining applications to recover valuable metals, including low-grade ores and used consumer electronics, as global demands for mineral supplies grow and ore grades decrease. Acidithiobacillus is a species of chemoautotrophic extreme acidophiles that are commonly found in mining process waters and acid mine drainage, and they have been described in several studies to help with metal recovery from bioremediation of metal-contaminated sites. We discuss future applications of Acidithiobacillus species in enhancing biomining effectiveness of the Acidithiobacillus species.

Source link: https://doi.org/10.1016/j.jhazmat.2022.129456

* Please keep in mind that all text is summarized by machine, we do not bear any responsibility, and you should always check original source before taking any actions

* Please keep in mind that all text is summarized by machine, we do not bear any responsibility, and you should always check original source before taking any actions