Method of preparing degradable and environment responsive composite microgels

    公开(公告)号:US11191728B2

    公开(公告)日:2021-12-07

    申请号:US16928186

    申请日:2020-07-14

    Abstract: A method of preparing degradable and environment responsive composite microgels, belonging to polymer material synthesis and biomaterial technology fields. Firstly, a copolymer of L-malic acid and 6-hydroxyhexanoate is prepared; then, N,N,N′,N′-tetramethyl cystamine is prepared. The copolymer and N,N,N′,N′-tetramethyl cystamine are mixed in an organic solvent to form a mixed solution which is added into excess distilled water to produce composite microgels. The microgels have advantages of mild preparing conditions, fast reaction speed without catalysts, no impurity remained, and controllable degradation rate. The microgels can load anticancer drug doxorubicin hydrochloride, showing environment responsive controlled release due to introduction of carboxyl groups and disulfide bonds.

    Lactobacillus plantarum with colorectal cancer inhibition function and use thereof

    公开(公告)号:US11564956B2

    公开(公告)日:2023-01-31

    申请号:US16771224

    申请日:2018-07-19

    Abstract: The present invention relates to the technical field of microbes, in particular to a Lactobacillus plantarum which can significantly inhibit the occurrence of colorectal cancer, and its use thereof. The Lactobacillus plantarum strain CCFM164 has a deposit number CGMCC No. 14520, which has a good tolerance to gastric acid and bile salts, significantly alleviate the level of colorectal inflammation in colorectal cancer model mice, and can reduce the number of tumors in the colon and rectum of the model mice by regulating the Notch1, Notch2 signaling pathway and the expression of VEGFR2 molecule in colorectal tissue. In addition, the Lactobacillus plantarum CCFM164 can also improve the intestinal flora population and short-chain fatty acid levels in the intestine. The Lactobacillus plantarum CCFM164 is used to prepare a fermented food for the inhibition of the occurrence of colorectal cancer with wild applications.

    Lactococcus lactis subsp. lactis CCFM1018 and application thereof in preparation of food and medicine for excreting plasticizer

    公开(公告)号:US11492588B2

    公开(公告)日:2022-11-08

    申请号:US17019985

    申请日:2020-09-14

    Abstract: The disclosure discloses Lactococcus lactis subsp. lactis CCFM1018 and application thereof in preparation of food and medicine for excreting a plasticizer, and belongs to the technical field of microorganisms. The Lactococcus lactis subsp. lactis CCFM1018 not only is significantly better than the intestinal resident bacteria Escherichia coli and Enterococcus faecalis in terms of the effect of promoting the excretion of DEHP and MEHP, but also is better than the commercial strain Lactobacillus rhamnosus LGG. Therefore, the Lactococcus lactis subsp. lactis CCFM1018 of the disclosure can be used as an effective means to prevent and alleviate body damage caused by DEHP and MEHP, and does not have toxic or side effects of drugs. Lactococcus lactis subsp. lactis CCFM1018 can be used to prepare pharmaceutical compositions and fermented food for alleviating and preventing the toxicity of DEHP and metabolites thereof, and has a very broad application prospect.

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