1.Application and Prospects of Simultaneous Multicomponent Extraction Technology in Biological Samples
Kun-Peng ZHANG ; Zi-Hong YE ; Zhi-Chao XUE
Progress in Biochemistry and Biophysics 2026;53(5):1400-1414
With the rapid development of the biopharmaceutical field, the efficient and simultaneous extraction of multiple biological components from biological samples has become a critical process for advancing scientific research. The ability to simultaneously extract various molecular components such as metabolites, DNA, RNA, and proteins is pivotal for multi-omics studies, which aim to comprehensively understand the molecular mechanisms of biological systems. Traditional methods often extract these components separately, leading to challenges such as sample loss, time consumption, contamination, and inconsistencies across different data types. In contrast, simultaneous extraction techniques address these issues by maintaining the consistency of each biological component’s physiological state, improving data reliability and facilitating integration across omic platforms. This review systematically summarizes recent advances in simultaneous extraction technologies, focusing on methods such as methanol/chloroform extraction, TRIzol reagent extraction, and modified Folch extraction, which have shown significant promise in improving the efficiency and integrity of biological sample preparation. These methods offer various advantages, such as reduced sample volume requirements, decreased contamination risk, and enhanced extraction consistency, which are crucial for studies involving small sample sizes or precious clinical specimens. Among these, methanol/chloroform extraction stands out for its simplicity, low cost, and ability to extract a wide range of biological molecules. However, it does face limitations, such as its inefficiency in extracting lipids and potential RNA contamination. On the other hand, the TRIzol reagent method has become a widely adopted technique due to its ability to simultaneously isolate RNA, proteins, and metabolites from the same sample. Despite its effectiveness, the TRIzol method has limitations in RNA quality, especially when handling complex samples or those with high protein content. Modified Folch extraction, which combines liquid-liquid extraction with commercial kits, offers a highly efficient way to extract polar metabolites, lipids, RNA, DNA, and proteins from small tissue samples. This method has proven advantageous in terms of extraction yield, especially for challenging or rare samples, although it requires precise handling to avoid cross-contamination between phases. The integration of automated platforms, microfluidics, and high-throughput systems is another exciting avenue for improving simultaneous extraction. Automation facilitates large-scale, reproducible sample processing with minimal human error, while microfluidics provides high precision in sample handling and enables real-time monitoring of extraction efficiency. These innovations not only enhance the speed and reproducibility of sample preparation but also open new possibilities for single-cell analysis, where sample volumes are often limited, and extraction efficiency is critical. In addition to the technical aspects, the review also highlights the importance of optimizing extraction protocols for specific sample types, such as clinical tissues, plants, and microorganisms. For example, the challenge of extracting multiple components from cancer tissues, where sample degradation and contamination risks are high, can be mitigated by carefully selecting extraction reagents and minimizing sample handling steps. Similarly, in plant studies, where metabolite diversity is vast, the simultaneous extraction methods must be optimized to account for the unique composition of plant tissues, which often include complex secondary metabolites and cell wall components. Looking forward, the development of more efficient and standardized simultaneous extraction methods will be crucial for advancing multi-omics research. There is a growing need for protocols that can be tailored to specific research needs, ensuring both reproducibility and flexibility in diverse applications. Additionally, combining these extraction methods with high-resolution analytical techniques such as mass spectrometry and next-generation sequencing will further enhance the potential of multi-omics studies to provide comprehensive insights into biological systems. As these technologies continue to evolve, their application in personalized medicine, environmental research, and agriculture holds great promise for addressing critical scientific challenges. In conclusion, while simultaneous extraction technologies have made significant strides, several challenges remain in optimizing extraction efficiency, ensuring reproducibility, and reducing costs. Future research should focus on refining extraction protocols, developing innovative extraction reagents, and expanding the scope of these methods to cater to a broader range of biological samples. Ultimately, the continued integration of these advanced techniques will revolutionize the way biological samples are prepared, analyzed, and understood in the context of multi-omics research.
2.Application and Prospects of Simultaneous Multicomponent Extraction Technology in Biological Samples
Kun-Peng ZHANG ; Zi-Hong YE ; Zhi-Chao XUE
Progress in Biochemistry and Biophysics 2026;53(5):1400-1414
With the rapid development of the biopharmaceutical field, the efficient and simultaneous extraction of multiple biological components from biological samples has become a critical process for advancing scientific research. The ability to simultaneously extract various molecular components such as metabolites, DNA, RNA, and proteins is pivotal for multi-omics studies, which aim to comprehensively understand the molecular mechanisms of biological systems. Traditional methods often extract these components separately, leading to challenges such as sample loss, time consumption, contamination, and inconsistencies across different data types. In contrast, simultaneous extraction techniques address these issues by maintaining the consistency of each biological component’s physiological state, improving data reliability and facilitating integration across omic platforms. This review systematically summarizes recent advances in simultaneous extraction technologies, focusing on methods such as methanol/chloroform extraction, TRIzol reagent extraction, and modified Folch extraction, which have shown significant promise in improving the efficiency and integrity of biological sample preparation. These methods offer various advantages, such as reduced sample volume requirements, decreased contamination risk, and enhanced extraction consistency, which are crucial for studies involving small sample sizes or precious clinical specimens. Among these, methanol/chloroform extraction stands out for its simplicity, low cost, and ability to extract a wide range of biological molecules. However, it does face limitations, such as its inefficiency in extracting lipids and potential RNA contamination. On the other hand, the TRIzol reagent method has become a widely adopted technique due to its ability to simultaneously isolate RNA, proteins, and metabolites from the same sample. Despite its effectiveness, the TRIzol method has limitations in RNA quality, especially when handling complex samples or those with high protein content. Modified Folch extraction, which combines liquid-liquid extraction with commercial kits, offers a highly efficient way to extract polar metabolites, lipids, RNA, DNA, and proteins from small tissue samples. This method has proven advantageous in terms of extraction yield, especially for challenging or rare samples, although it requires precise handling to avoid cross-contamination between phases. The integration of automated platforms, microfluidics, and high-throughput systems is another exciting avenue for improving simultaneous extraction. Automation facilitates large-scale, reproducible sample processing with minimal human error, while microfluidics provides high precision in sample handling and enables real-time monitoring of extraction efficiency. These innovations not only enhance the speed and reproducibility of sample preparation but also open new possibilities for single-cell analysis, where sample volumes are often limited, and extraction efficiency is critical. In addition to the technical aspects, the review also highlights the importance of optimizing extraction protocols for specific sample types, such as clinical tissues, plants, and microorganisms. For example, the challenge of extracting multiple components from cancer tissues, where sample degradation and contamination risks are high, can be mitigated by carefully selecting extraction reagents and minimizing sample handling steps. Similarly, in plant studies, where metabolite diversity is vast, the simultaneous extraction methods must be optimized to account for the unique composition of plant tissues, which often include complex secondary metabolites and cell wall components. Looking forward, the development of more efficient and standardized simultaneous extraction methods will be crucial for advancing multi-omics research. There is a growing need for protocols that can be tailored to specific research needs, ensuring both reproducibility and flexibility in diverse applications. Additionally, combining these extraction methods with high-resolution analytical techniques such as mass spectrometry and next-generation sequencing will further enhance the potential of multi-omics studies to provide comprehensive insights into biological systems. As these technologies continue to evolve, their application in personalized medicine, environmental research, and agriculture holds great promise for addressing critical scientific challenges. In conclusion, while simultaneous extraction technologies have made significant strides, several challenges remain in optimizing extraction efficiency, ensuring reproducibility, and reducing costs. Future research should focus on refining extraction protocols, developing innovative extraction reagents, and expanding the scope of these methods to cater to a broader range of biological samples. Ultimately, the continued integration of these advanced techniques will revolutionize the way biological samples are prepared, analyzed, and understood in the context of multi-omics research.
3.Molecular and Phenotypic Characterization of Fluid-Derived Patient-Derived Cell and Organoid Models in Advanced Gastric Cancer
Ye Jin MOON ; Woo Sun KWON ; Chan Hee PARK ; Jinsoo JANG ; Juin PARK ; Byeong Gyu YOON ; Han Byeol MUN ; Namju KIM ; Choong-kun LEE ; Hei Cheul JEUNG ; Su-Jin SHIN ; Tae Soo KIM ; Sun Young RHA
Journal of Gastric Cancer 2026;26(2):260-278
Purpose:
Patient-derived cells (PDCs) and patient-derived organoids (PDOs) are complementary preclinical models widely used in translational cancer research. However, their molecular and functional differences have not been systematically characterized. This study established and analyzed paired PDC and PDO models derived from the same gastric cancer ascites to delineate platform-dependent molecular and functional profiles.
Materials and Methods:
Malignant ascites or pleural fluid obtained from 6 patients with advanced gastric cancer were used to establish paired PDC and PDO models. All pairs underwent comprehensive multi-omics profiling, integrating genomic, transcriptomic, and proteomic data. Phenotypic characterization included morphological, histological, proliferative, and cell cycle analyses. Drug sensitivity assays were performed using 4 chemotherapeutic agents commonly used to treat gastric cancer.
Results:
The 6 paired PDC and PDO models exhibited distinct morphological characteristics.Whole-genome analyses demonstrated high concordance among primary tumors, PDCs, and PDOs, confirming tumor representation across platforms. Multi-omics profiling identified platform-dependent molecular signatures; PDOs were enriched for extracellular matrix remodeling and stemness, whereas PDCs displayed proliferation- and immune-related signatures. Clinically relevant biomarkers, including HER2 and MET alterations, were concordant with primary tumors. Notably, drug responses differed between platforms and patients, indicating platform-dependent and patient-specific chemosensitivity.
Conclusions
Paired PDC and PDO models derived from the same patients preserved core patient-specific tumor characteristics while exhibiting distinct molecular and functional profiles. These findings underscore the culture platform as a critical determinant of experimental outcomes and therapeutic responses. Therefore, careful selection of an appropriate preclinical model is essential to accurately address biological questions and optimize precision oncology strategies.
4.Staged Characteristics of Mitochondrial Energy Metabolism in Chronic Heart Failure with Heart-Yang Deficiency Syndrome and Prescription Intervention from Theory of Reinforcing Yang
Zizheng WU ; Xing CHEN ; Lichong MENG ; Yao ZHANG ; Peng LUO ; Jiahao YE ; Kun LIAN ; Siyuan HU ; Zhixi HU
Chinese Journal of Experimental Traditional Medical Formulae 2026;32(5):129-138
Chronic heart failure (CHF) is a complex clinical syndrome caused by ventricular dysfunction, with mitochondrial energy metabolism disorder being a critical factor in disease progression. Heart-Yang deficiency syndrome, as the core pathogenesis of CHF, persists throughout the disease course. Insufficiency of heart-Yang leads to weakened warming and propelling functions, resulting in the accumulation of phlegm-fluid, blood stasis, and dampness. This eventually causes Qi stagnation with phlegm obstruction and blood stasis with water retention, forming a vicious cycle that exacerbates disease progression. According to the theory of reinforcing Yang, the clinical experience of the traditional Chinese medicine (TCM) master Tang Zuxuan in treating CHF with heart-Yang deficiency syndrome, and achievements from molecular biological studies, this study innovatively proposes an integrated research framework of "TCM syndrome differentiation and staging-mitochondrial metabolism mechanisms-intervention with Yang-reinforcing prescriptions" which is characterized by the integration of traditional Chinese and Western medicine. Heart-Yang deficiency syndrome is classified into mild (Stage Ⅰ-Ⅱ), severe (Stage Ⅲ), and critical (Stage Ⅳ) stages. The study elucidates the precise correlations between the pathogenesis of each stage and mitochondrial metabolism disorders from theoretical, pathophysiological, and therapeutic perspectives. The mild stage is characterized by impaired biogenesis and substrate-utilization imbalance, corresponding to heart-Yang deficiency and phlegm-fluid aggregation. Linggui Zhugantang and similar prescriptions can significantly improve the expression of peroxisome proliferator-activated receptor gamma co-activator-1α(PGC-1α)/silent information regulator 2 homolog 1 (SIRT1) and ATPase activity. The severe stage centers on oxidative stress and structural damage, reflecting Yang deficiency with water overflow and phlegm-blood stasis intermingling. At this stage, Zhenwu Tang and Qiangxin Tang can effectively mitigate oxidative stress damage, increase adenosine triphosphate (ATP) content, and repair mitochondrial structure. The critical stage arises from calcium overload and mitochondrial disintegration, leading to the collapse of Yin-Yang equilibrium. At this stage, Yang-restoring and crisis-resolving prescriptions such as Fuling Sini Tang and Qili Qiangxin capsules can inhibit abnormal opening of the mitochondrial permeability transition pore (MPTP), reduce cardiomyocyte apoptosis rate, and protect mitochondrial function. By summarizing the characteristics of mitochondrial energy metabolism disorders at different stages of CHF, this study explores the application of the theory of reinforcing Yang in treating heart-Yang deficiency syndrome and provides new insights for the clinical diagnosis and treatment of CHF.
5.Exploring Effect of Traditional Chinese Medicine Interventions on Mitochondrial Quality Control in Chronic Heart Failure Based on Theory of "Mingmen Dongqi"
Yubin ZHANG ; Kun LIAN ; Jiahao YE ; Junyu ZHANG ; Weijun LI ; Jiali ZHANG ; Zhixi HU
Chinese Journal of Experimental Traditional Medical Formulae 2026;32(20):269-280
Chronic heart failure (CHF), as the terminal stage of various cardiovascular diseases, is characterized by a prolonged course and a high mortality rate, posing a serious threat to human health and life. According to physician Sun Yikui's theory of "Mingmen Dongqi" (dynamic Qi of life gate) in the Ming Dynasty and the modern medicine concept of mitochondrial quality control (MQC), this paper systematically explores the pathogenic mechanisms and evolutionary patterns of CHF, as well as its intrinsic connection with microstructural homeostasis, and further proposes potential traditional Chinese medicine (TCM) intervention strategies. CHF is often caused by damage to the heart Qi at the early stage. As the disease progresses, prolonged illness affects the kidneys, leading to the dynamic Qi decline of life gate. Further, it results in the failure of the functions of sustaining and consolidating, causing the disintegration of the physical form, which corresponds to mitochondrial kinetic disorders. The deficiency in primary driving force results in impaired Qi transformation, corresponding to mitochondrial autophagy dysfunction, forming a pathological transmission chain of "life gate-mitochondrion" that ultimately leads to myocardial structural disintegration and energy metabolism failure. Modern research indicates that patients with CHF exhibit significant MQC imbalance. Disrupted mitochondrial dynamics lead to network fragmentation, and impaired autophagy causes metabolic blockage, constituting the key microscopic mechanisms underlying ventricular remodeling and pump failure. Chinese herbal medicines, such as those with the effects of warming and tonifying kidney Yang or reinforcing healthy Qi, can intervene in multiple signaling pathways-including PTEN-inducible kinase 1 (PINK1)/Parkin and AMP-activated protein kinase/dynamin-related protein 1 (AMPK/Drp1)-to regulate mitochondrial dynamics and autophagy activity. This repairs damaged MQC networks and improves the microenvironment of myocardial energy metabolism. These intervention strategies align closely with the TCM therapeutic principles of warming and tonifying life gate, replenishing Qi, and activating blood, demonstrating the advantages of holistic regulation based on kidney-centered treatment and mitochondrial-targeted approaches. By integrating the "Mingmen Dongqi" theory with the MQC mechanism, this paper establishes a theoretical framework for the integrated prevention and treatment of CHF, offering new perspectives and insights for clinical practice and future research.
6.Exploring Effect of Traditional Chinese Medicine Interventions on Mitochondrial Quality Control in Chronic Heart Failure Based on Theory of "Mingmen Dongqi"
Yubin ZHANG ; Kun LIAN ; Jiahao YE ; Junyu ZHANG ; Weijun LI ; Jiali ZHANG ; Zhixi HU
Chinese Journal of Experimental Traditional Medical Formulae 2026;32(20):269-280
Chronic heart failure (CHF), as the terminal stage of various cardiovascular diseases, is characterized by a prolonged course and a high mortality rate, posing a serious threat to human health and life. According to physician Sun Yikui's theory of "Mingmen Dongqi" (dynamic Qi of life gate) in the Ming Dynasty and the modern medicine concept of mitochondrial quality control (MQC), this paper systematically explores the pathogenic mechanisms and evolutionary patterns of CHF, as well as its intrinsic connection with microstructural homeostasis, and further proposes potential traditional Chinese medicine (TCM) intervention strategies. CHF is often caused by damage to the heart Qi at the early stage. As the disease progresses, prolonged illness affects the kidneys, leading to the dynamic Qi decline of life gate. Further, it results in the failure of the functions of sustaining and consolidating, causing the disintegration of the physical form, which corresponds to mitochondrial kinetic disorders. The deficiency in primary driving force results in impaired Qi transformation, corresponding to mitochondrial autophagy dysfunction, forming a pathological transmission chain of "life gate-mitochondrion" that ultimately leads to myocardial structural disintegration and energy metabolism failure. Modern research indicates that patients with CHF exhibit significant MQC imbalance. Disrupted mitochondrial dynamics lead to network fragmentation, and impaired autophagy causes metabolic blockage, constituting the key microscopic mechanisms underlying ventricular remodeling and pump failure. Chinese herbal medicines, such as those with the effects of warming and tonifying kidney Yang or reinforcing healthy Qi, can intervene in multiple signaling pathways-including PTEN-inducible kinase 1 (PINK1)/Parkin and AMP-activated protein kinase/dynamin-related protein 1 (AMPK/Drp1)-to regulate mitochondrial dynamics and autophagy activity. This repairs damaged MQC networks and improves the microenvironment of myocardial energy metabolism. These intervention strategies align closely with the TCM therapeutic principles of warming and tonifying life gate, replenishing Qi, and activating blood, demonstrating the advantages of holistic regulation based on kidney-centered treatment and mitochondrial-targeted approaches. By integrating the "Mingmen Dongqi" theory with the MQC mechanism, this paper establishes a theoretical framework for the integrated prevention and treatment of CHF, offering new perspectives and insights for clinical practice and future research.
7.Optimization of extraction process for Bletillae Rhizoma and evaluation of its anti-oxidant,tyrosinase inhibitory activities
Shan-shan WANG ; Yi-yuan LUO ; Ye-fei XIE ; Xin-miao JIANG ; Ping PAN ; Kun-ming QIN ; Hong-jiang CHEN
Chinese Traditional Patent Medicine 2025;47(7):2171-2177
AIM To optimize the extraction process for Bletillae Rhizoma,and to evaluate its anti-oxidant,tyrosinase inhibitory activities.METHODS With ultrasound time,ethanol concentration and solid-liquid ratio as influencing factors,the total extraction content of gastrodin,protocatechualdehyde,p-hydroxybenzaldehyde,1,4-bis[4-(gluconoxy)benzyl]-2-isobutylmalate-2-glucoside,1,4-bis[4-(gluconoxy)benzyl]-2-isobutylmalate,yam Ⅲ,dihydropinosin and 3'-O-methylyam Ⅲ as an evaluation index,the extraction process was optimized by Box-Behnken response surface method.Subsequently,the extract's scavenging effects on DPPH,ABTS+free radicals,and inhibitory ability on tyrosinase were determined.RESULTS The optimal conditions were determined to be 49 min for ultrasound time,55%for ethanol concentration,1∶30 for solid-liquid ratio,and 2 times for extraction frequency,the total extraction content was 13.18 mg/g.The extract demonstrated the IC50 of 10.12,314.07 and 1.70 μg/g on DPPH,ABTS+free radicals and tyrosinase,respectively.CONCLUSION This simple,reliable and stable method can be used for the extraction for Bletillae Rhizoma with strong anti-oxidant,tyrosinase inhibitory activities.
8.Investigation and control of 2 cases of hospital-acquired Enterococcus faecium infection in a neonatal intensive care unit
Chaomin GUO ; Mingmei DU ; Huan LI ; Hongwu YAO ; Yunxi LIU ; Kun YE ; Xiaoming ZHANG
Chinese Journal of Nosocomiology 2025;35(16):2427-2431
OBJECTIVE To investigate a suspected hospital-acquired infection cluster of Enterococcus faecium(Efm)in a neonatal intensive care unit(NICU)of the First Medical Center of Chinese PLA General Hospital,identify the source of infection and transmission routes,and provide a reference for precise prevention and control of hospital-acquired infections.METHODS Epidemiological investigations and environmental microbiological sam-pling were conducted for two neonates with Efm bloodstream infections in the NICU in Jul.2024 to detect Efm in the ward environment.Whole-genome average nucleotide identity(ANI)and multilocus sequence typing(MLST)were used to analyze the homology,drug resistance,and virulence factors of Efm isolates from patients and envi-ronments.Targeted intervention measures were proposed.RESULTS Two cases of Efm bloodstream infection were detected.A total of 37 environmental specimens were collected,and 2 were cultured Efm(the wipe dispenser o-pening and incubator handle of the patients).The drug susceptibility testing results of 2 environmental specimens were consistent with those of the two patient specimens.Genomic analysis confirmed high homology(ANI>99.99%)among the four Efm isolates.After implementing a series of measures including centralized isolation,strict hand hygiene,thorough environmental cleaning and disinfection,strict disinfection and management of inva-sive devices,enhanced grouping of medical staff for diagnosis and treatment,the incident was effectively con-trolled.CONCLUSIONS This incident can be determined as cluster of hospital-acquired infection with Enterococcus faecium in the neonatal intensive care unit.The wet wipes are the source or transmission medium of contamina-tion.Inadequate disinfection of items and the environment,and insufficient hand hygiene of medical staff are the main reasons for this infection outbreak.Early identification of abnormal cluster of infection,investigation of the source of infection and transmission routes and timely implementation of targeted measures are the keys for preventing infection outbreaks.
9.Influence of scraping along meridians combined with thunder-fire moxibustion on motor function and hemorheology in patients with shoulder-hand syndrome after ischemic stroke
Jianhua ZHOU ; Kun WANG ; Xiaobo SHANG ; Ye WANG ; Fan LI ; Liman ZHANG ; Minju LI
Chinese Journal of Practical Nursing 2025;41(4):260-266
Objective:To analyze the effect of meridian scraping combined with thunder fire moxibustion in improving the motor function and hemorheology of patients with shoulder hand syndrome (SHS) after ischemic stroke, in order to provide reference for clinical intervention of SHS patients after ischemic stroke.Methods:A prospective study was conducted using a simple random sampling method to select SHS patients after ischemic stroke admitted to Shijiazhuang Hospital of Traditional Chinese Medicine from January 2020 to June 2023, and were randomly divided into two groups. The thunder-fire moxibustion group were given routine nursing and thunder-fire moxibustion therapy, and the combined group were additionally given scraping therapy along meridians on the basis of thunder-fire moxibustion group. The Upper Limb Fugl-Meyer Motor Function Assessment Scale (U-FMA) score, Visual Analogue Scale (VAS) score, Action Research Arm Test (ARAT) score, shoulder joint activity score, hemorheological indicators (hematocrit, plasma viscosity, platelet adhesion rate) and activities of daily living (Barthel Index), etc. were compared between two groups before and after intervention.Results:Finally, 86 patients with SHS after ischemic stroke were included, with 42 patients in the thunder-fire moxibustion group, including 25 males and 17 females, aged (59.37 ± 7.64) years; 44 patients in the combined group, including 24 males and 20 females, aged (59.52 ± 7.61) years. Before intervention, there was no statistical significance in U-FMA score, VAS score, ARAT score, shoulder joint activity score, hemorheology index level and Barthel Index between two groups (all P>0.05). After intervention, the U-FMA score, ARAT score and Barthel Index in the combined group were (48.21 ± 4.85), (40.22 ± 4.64), (56.43 ± 9.76) points, respectively, which were higher than (44.56 ± 4.23), (35.98 ± 4.37), (51.97 ± 8.31) points in the thunder-fire moxibustion group, the differences were statistically significant ( t =3.71, 4.36, 2.28, all P<0.05). The VAS score, shoulder joint mobility score, blood cell volume, plasma viscosity and platelet adhesion rate in the combined group were (2.44 ± 0.87) points, (1.23 ± 0.25) points, 0.44 ± 0.02, (1.35 ± 0.32) mPa·s, (53.56 ± 5.71)%, respectively, which were lower than (3.05 ± 0.99) points, (1.58 ± 0.22) points, 0.46 ± 0.02, (1.72 ± 0.36) mPa·s, (62.53 ± 5.94)% in the thunder-fire moxibustion group, the differences were statistically significant ( t values were 3.04-7.14, all P<0.05). Conclusions:Scraping along meridians combined with thunder-fire moxibustion therapy can achieve good intervention effect in patients with SHS after ischemic stroke, improve the upper limb motor function and hemorheology of patients, and enhance the activities of daily living.
10.Comparison of osteogenic potential in STRO-1 positive and negative bone marrow mesenchymal stem cells
Wanlin ZHOU ; Bin HE ; Xiongcheng SHEN ; Kun HUANG ; Renyuan TIAN ; Ye YUAN ; Wenliang HUANG
Chinese Journal of Tissue Engineering Research 2025;29(36):7719-7727
BACKGROUND:With aging,the regenerative capacity and differentiation function of bone marrow mesenchymal stem cells progressively decline,reducing bone tissue repair efficacy.Thus,identifying bone marrow mesenchymal stem cell subpopulations with enhanced osteogenic potential is of significant importance for advancing bone tissue engineering.OBJECTIVE:To evaluate the osteogenic differentiation potential differences between STRO-1 positive and negative bone marrow mesenchymal stem cells under osteogenic induction conditions.METHODS:SD rat bone marrow mesenchymal stem cells were isolated and cultured.The expression of CD29,CD45,CD90,and STRO-1 was identified via flow cytometry and immunofluorescence.Immunomagnetic cell sorting was used to separate STRO-1 positive and negative bone marrow mesenchymal stem cells.The cells of two groups were subjected to osteogenic induction for 7 and 14 days.qRT-PCR and western blotting were performed to analyze differences in osteogenesis-related gene expression(Collagen I,Runt-related transcription factor 2,osteoprotegerin,and osteocalcin)and protein levels.Alizarin red staining and alkaline phosphatase staining were used to observe calcium nodule formation.RESULTS AND CONCLUSION:Flow cytometry showed high expression levels of CD29 and CD90 and low expression of CD45,with a positive STRO-1 expression rate of 12.8%.Immunofluorescence results were consistent with those of flow cytometry.After magnetic cell sorting,STRO-1 positive cells demonstrated a higher colony formation rate than STRO-1 negative cells.On day 14,STRO-1 positive cells showed significantly higher osteogenic differentiation potential than on day 7,with significantly elevated osteogenesis-related marker levels compared to STRO-1 negative cells(P<0.01).The findings indicate that STRO-1 positive bone marrow mesenchymal stem cells exhibit significant advantages in osteogenic potential,providing a theoretical basis for their selection as ideal seed cells in bone tissue engineering.In future applications,they may represent a promising therapeutic approach for bone defect repair.

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