The management of colorectal cancer(CRC)poses a significant challenge,necessitating the development of innovative and effective therapeutics.Our research has shown that notoginsenoside Ft1(Ng-Ft1),a small molecule,mar...The management of colorectal cancer(CRC)poses a significant challenge,necessitating the development of innovative and effective therapeutics.Our research has shown that notoginsenoside Ft1(Ng-Ft1),a small molecule,markedly inhibits subcutaneous tumor formation in CRC and enhances the proportion of CD8^(+)T cells in tumor-bearing mice,thus restraining tumor growth.Investigation into the mechanism revealed that Ng-Ft1 selectively targets the deubiquitination enzyme USP9X,undermining its role in shieldingβ-catenin.This leads to a reduction in the expression of downstream effectors in the Wnt signaling pathway.These findings indicate that Ng-Ft1 could be a promising small-molecule treatment for CRC,working by blocking tumor progression via the Wnt signaling pathway and augmenting CD8^(+)T cell prevalence within the tumor environment.展开更多
Obesity and its associated complications are highly related to a current public health crisis around the world.A growing body of evidence has indicated that G-protein coupled bile acid(BA) receptor TGR5(also known as ...Obesity and its associated complications are highly related to a current public health crisis around the world.A growing body of evidence has indicated that G-protein coupled bile acid(BA) receptor TGR5(also known as Gpbar-1) is a potential drug target to treat obesity and associated metabolic disorders.We have identified notoginsenoside Ftl(Ftl) from Panax notoginseng as an agonist of TGR5 in vitro.However,the pharmacological effects of Ftl on diet-induced obese(DIO) mice and the underlying mechanisms are still elusive.Here we show that Ftl(100 mg/100 diet) increased adipose lipolysis,promoted fat browning in inguinal adipose tissue and induced glucagon-like peptide-1(GLP-1) secretion in the ileum of wild type but not Tgr5^(-/-) obese mice.In addition,Ftl elevated serum free and taurineconjugated bile acids(BAs) by antagonizing Fxr transcriptional activities in the ileum to activate Tgr5 in the adipose tissues.The metabolic benefits of Ftl were abolished in Cyp27 al^(-/-) mice which have much lower BA levels.These results identify Ftl as a single compound with opposite activities on two key BA receptors to alleviate high fat diet-induced obesity and insulin resistance in mice.展开更多
Many species of Sapindaceae,such as lychee,longan,and rambutan,provide nutritious and delicious fruit.Understanding the molecular genetic mechanisms that underlie the regulation of flowering is essential for securing ...Many species of Sapindaceae,such as lychee,longan,and rambutan,provide nutritious and delicious fruit.Understanding the molecular genetic mechanisms that underlie the regulation of flowering is essential for securing flower and fruit productivity.Most endogenous and exogenous flowering cues are integrated into the florigen encoded by FLOWER-ING LOCUS T.However,the regulatory mechanisms of flowering remain poorly understood in Sapindaceae.Here,we identified 60 phosphatidylethanolamine-binding protein-coding genes from six Sapindaceae plants.Gene duplication events led to the emergence of two or more paralogs of the FT gene that have evolved antagonistic functions in Sapindaceae.Among them,the FT1-like genes are functionally conserved and promote flowering,while the FT2-like genes likely serve as repressors that delay flowering.Importantly,we show here that the natural variation at nucleotide position-1437 of the lychee FT1 promoter determined the binding affinity of the SVP protein(LcSVP9),which was a negative regulator of flowering,resulting in the differential expression of LcFT1,which in turn affected flowering time in lychee.This finding provides a potential molecular marker for breeding lychee.Taken together,our results reveal some crucial aspects of FT gene family genetics that underlie the regulation of flowering in Sapindaceae.展开更多
基金supported by Shanghai Pujiang Program(No.20PJ1413000)the National Natural Science Foundation of China(No.82173106,82130115,81290108033,82004004,and 82074011)。
文摘The management of colorectal cancer(CRC)poses a significant challenge,necessitating the development of innovative and effective therapeutics.Our research has shown that notoginsenoside Ft1(Ng-Ft1),a small molecule,markedly inhibits subcutaneous tumor formation in CRC and enhances the proportion of CD8^(+)T cells in tumor-bearing mice,thus restraining tumor growth.Investigation into the mechanism revealed that Ng-Ft1 selectively targets the deubiquitination enzyme USP9X,undermining its role in shieldingβ-catenin.This leads to a reduction in the expression of downstream effectors in the Wnt signaling pathway.These findings indicate that Ng-Ft1 could be a promising small-molecule treatment for CRC,working by blocking tumor progression via the Wnt signaling pathway and augmenting CD8^(+)T cell prevalence within the tumor environment.
基金financially sponsored by Shanghai Pujiang Program(17PJ1408800,China)the Natural Science Foundations of China to Lili Ding(81773961)+6 种基金Zhengtao Wang(81920108033)Yingbo Yang(81703682)financially supported by the National S&T Major Special Projects of China(No.2017ZX09309006)to Li YangInterdisciplinary Program of Shanghai Jiao Tong University to Qiaoling Yang(YG2019QNA03,China)partially supported by R01DK124627George Schaeffer fundJohn Hench fund(USA)to Wendong Huang。
文摘Obesity and its associated complications are highly related to a current public health crisis around the world.A growing body of evidence has indicated that G-protein coupled bile acid(BA) receptor TGR5(also known as Gpbar-1) is a potential drug target to treat obesity and associated metabolic disorders.We have identified notoginsenoside Ftl(Ftl) from Panax notoginseng as an agonist of TGR5 in vitro.However,the pharmacological effects of Ftl on diet-induced obese(DIO) mice and the underlying mechanisms are still elusive.Here we show that Ftl(100 mg/100 diet) increased adipose lipolysis,promoted fat browning in inguinal adipose tissue and induced glucagon-like peptide-1(GLP-1) secretion in the ileum of wild type but not Tgr5^(-/-) obese mice.In addition,Ftl elevated serum free and taurineconjugated bile acids(BAs) by antagonizing Fxr transcriptional activities in the ileum to activate Tgr5 in the adipose tissues.The metabolic benefits of Ftl were abolished in Cyp27 al^(-/-) mice which have much lower BA levels.These results identify Ftl as a single compound with opposite activities on two key BA receptors to alleviate high fat diet-induced obesity and insulin resistance in mice.
基金supported by funding from Science and Technology Projects in Guangzhou(Grant No.2023A04J1455)the Key-Area Research and Development Program of Guangdong Province(#2022B0202070003)supported by the National Natural Science Foundation of China(#32072547,#32372665).
文摘Many species of Sapindaceae,such as lychee,longan,and rambutan,provide nutritious and delicious fruit.Understanding the molecular genetic mechanisms that underlie the regulation of flowering is essential for securing flower and fruit productivity.Most endogenous and exogenous flowering cues are integrated into the florigen encoded by FLOWER-ING LOCUS T.However,the regulatory mechanisms of flowering remain poorly understood in Sapindaceae.Here,we identified 60 phosphatidylethanolamine-binding protein-coding genes from six Sapindaceae plants.Gene duplication events led to the emergence of two or more paralogs of the FT gene that have evolved antagonistic functions in Sapindaceae.Among them,the FT1-like genes are functionally conserved and promote flowering,while the FT2-like genes likely serve as repressors that delay flowering.Importantly,we show here that the natural variation at nucleotide position-1437 of the lychee FT1 promoter determined the binding affinity of the SVP protein(LcSVP9),which was a negative regulator of flowering,resulting in the differential expression of LcFT1,which in turn affected flowering time in lychee.This finding provides a potential molecular marker for breeding lychee.Taken together,our results reveal some crucial aspects of FT gene family genetics that underlie the regulation of flowering in Sapindaceae.
