1.In situ tumor cell engineering reverses immune escape to enhance immunotherapy effect.
Shujun LIU ; Shijun YUAN ; Meichen LIU ; Jinhu LIU ; Shunli FU ; Tong GAO ; Shuang LIANG ; Xinyan HUANG ; Xinke ZHANG ; Yongjun LIU ; Zipeng ZHANG ; Na ZHANG
Acta Pharmaceutica Sinica B 2025;15(1):627-641
The underlying cause of low response rates to existing immunotherapies is that tumor cells dominate tumor immune escape through surface antigen deficiency and inducing tumor immunosuppressive microenvironment (TIME). Here, we proposed an in situ tumor cell engineering strategy to disrupt tumor immune escape at the root by restoring tumor cell MHC-I/tumor-specific antigen complex (MHC-I/TSA) expression to promote T-cell recognition and by silencing tumor cell CD55 to increase the ICOSL+ B-cell proportion and reverse the TIME. A doxorubicin (DOX) and dual-gene plasmid (MAC pDNA, encoding both MHC-I/ASMTNMELM and CD55-shRNA) coloaded drug delivery system (LCPN@ACD) with tumor targeting and charge/size dual-conversion properties was prepared. LCPN@ACD-induced ICD promoted DC maturation and enhanced T-cell activation and infiltration. LCPN@ACD enabled effective expression of MHC-I/TSA on tumor cells, increasing the ability of tumor cell recognition and killing. LCPN@ACD downregulated tumor cell CD55 expression, increased the proportion of ICOSL+ B cells and CTLs, and reversed the TIME, thus greatly improving the efficacy of αPD-1 and CAR-T therapies. The application of this in situ tumor cell engineering strategy eliminated the source of tumor immune escape, providing new ideas for solving the challenges of clinical immunotherapy.
2.Shaping global health promotion:a comprehensive analysis of the 10 Global Conferences on Health Promotion Conferences(1986-2021)
Liu SHIYU ; Sun MEICHEN ; Zhang NA ; Sun ZHAOZHANG ; Tian XIANGYANG ; Li LIMING ; Wang YOUFA
Global Health Journal 2024;8(2):91-96
Objective:This study analyzed how the 10 Global Conferences on Health Promotion have played a significant role in shaping and promoting a worldwide consensus and actions on health promotion,effectively addressing diverse health challenges that evolved over different periods. Methods:The textual analysis method was used in this study and text encoding was conducted to systematically examine the declarations and reports presented by the 10 Global Conferences on Health Promotion held during 1986-2021.We summarized the themes and key achievements,and key vocabulary in the conference declarations was extracted and analyzed to construct the global health promotion consensus and actions. Results:The fundamental principles of the conferences are to foster consensus and initiate actions in the realm of health promotion on a global scale.The primary purpose and goal are to promote health from regional to global.Significantly,our findings highlight a transition in the primary actors driving health promotion.It underscores a shift in health promotion from being driven primarily by organizations like the World Health Organization,governments,and international bodies,to a more inclusive approach involving non-governmental organizations and the general public.This development implies that health promotion has evolved into a collective global en-deavor,demanding the proactive involvement of various stakeholders,and forging new alliances in public health.Meanwhile,the coronavirus disease 2019(COVID-19)pandemic has further shaped the landscape of health pro-motion,underscoring the need for intensified focus on areas including disease prevention,health education,and the integration of digital health technologies,and emphasizing the importance of a multidimensional,responsive approach in public health initiatives. Conclusions:Sustained collaboration and innovative strategies are pivotal to advancing health promotion globally.Countries,together with public and private entities,should intensify cooperation.Multisectoral collaboration among partners such as healthcare,education,social security,and the industry is vital for health promotion and achieving global health goals.
3.Influence of dietary composition of residents in endemic fluorosis area on the prevalence of skeletal fluorosis
Liu YANG ; Qiao LI ; Yunyi YIN ; Qun LOU ; Fanshuo YIN ; Meichen ZHANG ; Liaowei WU ; Ning GUO ; Wei HUANG ; Yanhui GAO ; Yanmei YANG
Chinese Journal of Endemiology 2023;42(2):87-91
Objective:To analyze the relationship between dietary composition of residents in endemic fluorosis areas and skeletal fluorosis.Methods:A case-control study was used to analyze the difference of dietary composition between patients with skeletal fluorosis (case group) and residents without skeletal fluorosis (control group). In August 2019, taking the drinking water-borne endemic fluorosis area in Wenshui County, Lvliang City, Shanxi Province as the survey site, a cluster sampling method was adopted to select local residents aged over 18 years old, and a questionnaire survey was conducted by face-to-face interview. The survey contents included gender, age and consumption frequency of various foods. Binary logistic regression was used to analyze the relationship between food consumption frequency and skeletal fluorosis. The diagnosis of skeletal fluorosis was made by using portable digital radiography (DR) to take X-ray films of forearm and lower leg, combining with clinical signs, and according to the Diagnostic Standard for Endemic Skeletal Fluorosis (WS/T 192-2008) to determine.Results:A total of 1 061 subjects were included in this study, including 376 in the case group and 685 in the control group. The age composition of patients in the case group (≤60, > 60 years old: 162, 214 cases) was significantly different from that in the control group (≤60, > 60 years old: 423, 261 cases, χ 2 = 34.52, P < 0.001). There was no statistically significant difference in gender ratio (χ 2 = 1.37, P = 0.251). The proportion of patients in the case group who ate meat and eggs > 1 time/week was lower than that in the control group (χ 2 = 8.06, 5.46, P < 0.05), the proportion of patients who ate milk > 1 time/week was higher than that in the control group (χ 2 = 4.01, P = 0.046), and the proportion of patients who ate seafood ≥1 time/week was lower than that in the control group (χ 2 = 4.16, P = 0.046). The results of binary logistic regression analysis showed that after adjusting for age, sex, and urinary fluoride, the frequency of eating meat, eggs or milk > 1 time/week and the frequency of eating seafood ≥1 time/week were not related to the risk of skeletal fluorosis ( P > 0.05); however, in the group ≤60 years old, the frequency of eating eggs > 1 time/week was associated with the risk of skeletal fluorosis [odds ratio ( OR) = 0.59, 95% confidence interval ( CI): 0.39, 0.88]. Conclusions:The consumption frequency of meat, milk, eggs and seafood is significantly different between the skeletal fluorosis patients and the control people. In the population ≤60 years old, consumption frequency of eggs > 1 time/week may reduce the risk of skeletal fluorosis.
4.Application of Au nanoplates in tumor therapy and diagnosis
Meichen LIU ; Shuang LIANG ; Yongjun LIU ; Na ZHANG
Journal of China Pharmaceutical University 2022;53(1):99-104
Au nanoplates (Au NPLs), a kind of novel two-dimensional metal materials with nanometer scale thickness, have attracted much attention due to their excellent properties; and have been widely used in the fields of tumor diagnosis and treatment in recent years.This article introduces the characteristics and preparation methods of Au nanoplates and summarizes their application in tumor diagnosis and treatment in recent years, in order to provide reference and ideas for the research and application of Au nanoplates in tumor.
5.Advance in the treatment of labia minora hypertrophy by wedge excision
Zhen ZHANG ; Fengyong LI ; Qiang LI ; Yu ZHOU ; Yujiao CAO ; Meichen LIU
Chinese Journal of Plastic Surgery 2022;38(3):339-343
Labia minora resection is one of the key method to solve labia minora hypertrophy. And it is reported that wedge resection is becoming a research hotspot as a common method. By a comprehensive literature search, the purpose of this article is to study and analyze the improvement of wedge resection in the treatment of labia minora hypertrophy over the past few years. At the same time, the characteristics, complications, and postoperative outcomes of the different resection method will be discussed based on the previous data. It is concluded that wedge resection has achieved positive treatment effects in the therapy of labia minora hypertrophy.
6.The research advance in erectile function of penile reconstruction
Zhen ZHANG ; Qiang LI ; Fengyong LI ; Yu ZHOU ; Yujiao CAO ; Meichen LIU
Chinese Journal of Plastic Surgery 2022;38(4):480-484
Phalloplasty can be considered as a important way to reconstruct erectile function for female-to-male transsexuals, patients with penile defect or genital malformations. Meanwhile, penile prostheses, such as autologous tissue, artificial prosthesis and other tissues, play a key role in reconstructing erectile function. Thus, the purpose of this article is to analyze relevant research reports in recent years, since research goes deeper and improvements have been achieved in this field.
7.The research advance in erectile function of penile reconstruction
Zhen ZHANG ; Qiang LI ; Fengyong LI ; Yu ZHOU ; Yujiao CAO ; Meichen LIU
Chinese Journal of Plastic Surgery 2022;38(9):1074-1078
Phalloplasty can be considered as an important way to reconstruct erectile function for female-to-male transsexuals, patients with penile defect or genital malformations. Meanwhile, various types of penile supports such as autologous tissue, artificial prosthesis and other tissues, play a key role in reconstructing erectile function. The purpose of this article is to analyze relevant research reports in recent years, since research goes deeper and improvements have been achieved in this field.
8.Advance in the treatment of labia minora hypertrophy by wedge excision
Zhen ZHANG ; Fengyong LI ; Qiang LI ; Yu ZHOU ; Yujiao CAO ; Meichen LIU
Chinese Journal of Plastic Surgery 2022;38(3):339-343
Labia minora resection is one of the key method to solve labia minora hypertrophy. And it is reported that wedge resection is becoming a research hotspot as a common method. By a comprehensive literature search, the purpose of this article is to study and analyze the improvement of wedge resection in the treatment of labia minora hypertrophy over the past few years. At the same time, the characteristics, complications, and postoperative outcomes of the different resection method will be discussed based on the previous data. It is concluded that wedge resection has achieved positive treatment effects in the therapy of labia minora hypertrophy.
9.The research advance in erectile function of penile reconstruction
Zhen ZHANG ; Qiang LI ; Fengyong LI ; Yu ZHOU ; Yujiao CAO ; Meichen LIU
Chinese Journal of Plastic Surgery 2022;38(4):480-484
Phalloplasty can be considered as a important way to reconstruct erectile function for female-to-male transsexuals, patients with penile defect or genital malformations. Meanwhile, penile prostheses, such as autologous tissue, artificial prosthesis and other tissues, play a key role in reconstructing erectile function. Thus, the purpose of this article is to analyze relevant research reports in recent years, since research goes deeper and improvements have been achieved in this field.
10.The research advance in erectile function of penile reconstruction
Zhen ZHANG ; Qiang LI ; Fengyong LI ; Yu ZHOU ; Yujiao CAO ; Meichen LIU
Chinese Journal of Plastic Surgery 2022;38(9):1074-1078
Phalloplasty can be considered as an important way to reconstruct erectile function for female-to-male transsexuals, patients with penile defect or genital malformations. Meanwhile, various types of penile supports such as autologous tissue, artificial prosthesis and other tissues, play a key role in reconstructing erectile function. The purpose of this article is to analyze relevant research reports in recent years, since research goes deeper and improvements have been achieved in this field.

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