1.Reconceptualizing Critical Illness in Cancer Through the Lens of Host Unregulated Response
Yun CHU ; Shiyi GONG ; Xin DING ; Hua ZHAO ; Huan CHEN ; Qing ZHANG ; Xiaoting WANG
Medical Journal of Peking Union Medical College Hospital 2026;17(1):1-9
Onco-critical care has emerged as an important subspecialty at the intersection of critical care medicine and oncology, attracting increasing attention in recent years. With continuous innovations in cancer therapies, patient survival has improved significantly; however, the incidence of associated critical complications has also increased. The reasons for cancer patients requiring intensive care unit admission are diverse and can be broadly categorized into three groups: progression of the underlying malignancy, treatment-related complications, and coexisting classical critical illnesses. Traditional critical care concepts and practices face limitations in addressing the multidimensional and heterogeneous challenges of onco-critical care. Based on the core mechanism of critical illness development—host/organ unregulated response (HOUR)—this article systematically elaborates on how this framework advances understanding and clinical practice into onco-critical care, with emphasis on its manifestations in neuroendocrine, immune-inflammatory, and coagulation-metabolic pathways. The review summarizes recent advances in clinical assessment and phenotyping systems for onco-critical illness and discusses a multidisciplinary, integrated management strategy centered on the "Disease Control, Host Response Modulation, Organ Support" triad. Finally, major challenges and future directions in this field are outlined. By integrating existing evidence and theoretical insights, this review aims to provide new perspectives and a theoretical foundation for the clinical management of onco-critical illness, thereby promoting its evolution toward precision and standardization.
2.Surveillance of Oncomelania hupensis snails following interruption of schistosomiasis transmission in Yunnan Province
Siqi NING ; Yi DONG ; Chunhong DU ; Lifang WANG ; Yun ZHANG ; Yuhe HE ; Hua JIANG ; Jiayu SUN ; Chunqiong CHEN ; Jiaqi YAN ; Jihua ZHOU ; Zongya ZHANG ; Hongqiong WANG ; Meifen SHEN ; Jing SONG
Chinese Journal of Schistosomiasis Control 2026;38(2):200-206
Objective To investigate the distribution characteristics of Oncomelania hupensis snails in Yunnan Province fol-lowing interruption of schistosomiasis transmission, so as to provide the evidence for assessing the risk of schistosomiasis transmission and scientifically formulating the schistosomiasis surveillance program. Methods According to the requirements of the National Schistosomiasis Surveillance Scheme (2020 Edition), O. hupensis snail surveillance data were collected from 18 schistosomiasis-endemic counties (cities, districts) in Yunnan Province from 2020 to 2024, including area of snail survey, area of snail habitats, area of re-emerging snail habitats, number of frames surveyed, number of frames with O. hupensis snails, number of O. hupensis snails captured, and number of living snails, and the occurrence of frames with snails and mean density of living snails were calculated. Changes in snail status over the 5-year period from 2020 to 2024 and the differences in snail distributions specified by epidemic intensity, environmental type, and vegetation type were analyzed. Results The areas of snail survey increased from 1 727.96 hm2 in 2020 to 3 894.45 hm2 in 2024 (peak) across 18 schistosomiasis-endemic counties (cities, districts) in Yunnan Province during the period from 2020 through 2024. The areas of snail habitats increased from 70.36 hm2 in 2020 to a peak in 2023 (172.04 hm2), followed by a reduction to 132.36 hm2 in 2024, and the areas of re-emerging snail habitats increased from 42.71 hm2 in 2020 to a peak in 2022 (78.43 hm2), followed by a reduction to 40.21 hm2 in 2024. The occurrence of frames with snails and mean density of living snails increased from 1.24% (3 025/244 404) and (0.033 2 ± 0.038 7) snails/0.1 m2 in 2020 to peaks at 2.03% (6 231/307 563) and (0.066 9 ± 0.068 4) snails/0.1 m2 in 2023, followed by reductions to 1.04% (5 829/559 941) and (0.032 6 ± 0.057 7) snails/0.1 m2 in 2024, respectively. There was a significant difference in the occurrence of frames with snails over the 5-year study period (χ2 = 1 962.95, P < 0.05), and the occurrence of frames with snails reduced by 48.71% in 2024 relative to in 2023 (χ2 = 1 411.05, P < 0.005); however, there was no significant difference in the mean density of living snails over the 5 years (H = 5.310, P > 0.05). There were significant differences in the occurrence of frames with snails (χ2 = 481.27, P < 0.05) and mean density of living snails (H = 6.872, P < 0.05) in schistosomiasis-endemic areas with different epidemic intensities. The occurrence of frames with snails (χ2 = 25.32 and 38.70, both P values < 0.017) and mean density of living snails (Z = 28.55 and 49.96, both P values < 0.017) were higher in schistosomiasis transmission-interrupted and eliminated areas with snails than in schistosomiasis-eliminated areas without snails, and the occurrence of frames with snails (χ2 = 453.54, P < 0.017) and mean density of living snails (Z = −56.97, P < 0.017) were higher in schistosomiasis-eliminated areas with snails than in schistosomiasis transmission-interrupted areas with snails. O. hupensis snails were mainly distributed in paddy fields, dry farmlands and ditches; however, the occurrence of frames with snails (13.40%, 424/3 164) and mean density of living snails [(0.252 8 ± 0.158 7) snails/0.1 m2] were higher in ponds/weirs than in other types of environments (both P values < 0.05). Rice, dry farmland crops and weeds were main vegetations in which O. hupensis snails were distributed, and the occurrence of frames with snails (2.29%, 7 111/310 140) and mean density of living snails [(0.072 3 ± 0.018 9) snails/0.1 m2] were higher in weeds than in other types of environments (both P values < 0.05). Conclusions O. hupensis snails have been effectively controlled in Yunnan Province following implementation of integrated schistosomiasis control measures; however, there are still risk factors for schistosomiasis transmission, including reduced attention to schistosomiasis control and snail re-emergence. Improved control efforts and surveillance system construction and timely identification of risk factors of snail status and timely management are recommended to ensure the achievement of the target of schistosomiasis elimination as scheduled.
3.Necroptosis in Exercise-induced Skeletal Muscle Damage: Roles and Regulatory Mechanisms
Zhi-Fei KE ; Wen-Jing SONG ; Yun-Feng DONG ; Hua-Yu SHANG
Progress in Biochemistry and Biophysics 2026;53(7):1884-1895
Exercise-induced muscle damage (EIMD) is a frequent form of skeletal muscle microdamage that occurs after high-intensity, prolonged, or unaccustomed exercise, especially exercise dominated by eccentric contractions. It is commonly characterized by delayed-onset muscle soreness, transient loss of muscle strength, local inflammation, structural disruption of myofibers, and delayed functional recovery. Although mild EIMD may serve as a stimulus for training adaptation, excessive or insufficiently recovered muscle damage can impair exercise performance, disturb training continuity, and reduce participation in physical activity. Therefore, clarifying the molecular mechanisms that underlie the initiation, amplification, and resolution of EIMD is important for optimizing athletic training, improving post-exercise recovery, and guiding evidence-based public fitness practice. Necroptosis is a regulated form of programmed cell death mediated primarily by the receptor-interacting protein kinase (RIPK) 1/RIPK3/mixed lineage kinase domain-like protein (MLKL) signaling axis. Recent studies have shown that necroptosis is closely involved in tissue injury, sterile inflammation, and repair remodeling. However, whether necroptosis acts as an initiating driver, a secondary damage amplifier, or an adaptive signal required for repair after EIMD remains unclear. This review aimed to summarize the potential role of necroptosis in EIMD and to establish a mechanistic framework linking regulated cell death, inflammatory amplification, immune regulation, and skeletal muscle repair. Relevant studies concerning EIMD, necroptosis, RIPK1/RIPK3/MLKL signaling, damage-associated molecular patterns (DAMPs), inflammatory responses, immune cell recruitment, extracellular matrix remodeling, and muscle regeneration were reviewed and integrated. On this basis, the possible temporal and functional involvement of necroptosis in different phases of EIMD was analyzed. The main evidence summarized in this review suggests that EIMD is not merely a consequence of primary mechanical disruption. Instead, it develops through a dynamic sequence that includes sarcolemmal instability, calcium overload, mitochondrial dysfunction, oxidative stress, inflammatory mediator production, immune cell infiltration, necrotic tissue clearance, and regeneration-associated remodeling. Necroptosis may participate in this process through at least two interconnected mechanisms. First, in the early or progressive phase of EIMD, activation of the RIPK1/RIPK3/MLKL signaling axis may promote MLKL phosphorylation and plasma membrane permeabilization, leading to the release of DAMPs such as high-mobility group box 1, ATP, mitochondrial DNA, and other intracellular components. These signals may activate innate immune pathways, amplify inflammatory cytokine production, and enhance the recruitment of neutrophils and macrophages, thereby aggravating secondary inflammation and extending muscle fiber injury. Second, during the resolution and repair phases, necroptosis-related signaling may also contribute indirectly to the formation of a regenerative microenvironment. By influencing the clearance of necrotic debris, the recruitment and phenotypic transition of immune cells, and the remodeling of extracellular matrix components, necroptosis may affect satellite cell activation, myogenic repair, and the eventual structural and functional recovery of injured skeletal muscle. Thus, the biological effect of necroptosis in EIMD may be context dependent rather than uniformly harmful. Its outcome may depend on exercise intensity, the extent of tissue damage, the timing of pathway activation, the involved cell types, inflammatory status, training background, age, and metabolic condition. In conclusion, necroptosis may represent an important molecular link between skeletal muscle injury, sterile inflammation, and tissue repair after damaging exercise. It may exert a dual role in EIMD by amplifying secondary damage while also contributing to repair coordination under appropriate temporal and microenvironmental conditions. Future studies should determine the activation pattern of RIPK1/RIPK3/MLKL signaling after different exercise protocols, identify the major cell populations undergoing necroptosis in injured skeletal muscle, and examine whether targeted modulation of necroptosis can reduce excessive inflammation without impairing necessary regenerative responses. This review provides a theoretical basis for understanding the pathogenesis of EIMD and for developing targeted strategies to improve skeletal muscle recovery after exercise-induced injury.
4.Surveillance of Schistosoma japonicum infections in wild murines in Yunnan Province
Meifen SHEN ; Jing SONG ; Lifang WANG ; Yun ZHANG ; Hua JIANG ; Jihua ZHOU ; Jiaqi YAN ; Jiayu SUN ; Chunqiong CHEN ; Zongya ZHANG ; Hongqiong WANG ; Chunhong DU ; Yi DONG
Chinese Journal of Schistosomiasis Control 2026;38(3):299-303
Objective To investigate the prevalence of Schistosoma japonicum infections in wild murines in schistosomiasisendemic areas of Yunnan Province, so as to provide the evidence for improving the schistosomiasis surveillance and early warning capability and implementing precise interventions in the province. Methods A total of 56 natural villages were sampled from 14 schistosomiasis-endemic counties (cities, districts) in Yunnan Province as surveillance sites from 2024 to 2025. Wild murines were captured using traps at night and characterized for species. Liver samples were collected from wild murines, S. japonicum eggs and miracidia were simultaneously detected using liver tissue compression microscopy, liver tissue homogenate microscopy, and liver tissue homogenate hatching. In addition, stool samples were collected from wild murine rectum, with S. japonicum eggs detected using a modified Kato-Katz thick smear technique and S. japonicum miracidia detected using the hatching test with nylon gauzes. Results A total of 15 577 valid murine traps were recovered, and 891 wild murines belonging to 16 species were captured, with a capture rate of 5.72%(891/15 577). The captured wild murines were predominantly districted in paddy fields, dry lands, ditches, ponds and marshlands, with Apodemus chevrieri, Rattus norvegicus, Crocidura attenuata, R. rattus sladeni, R. flavipectus, and Eothenomys miletus as dominant species. No S. japonicum eggs or miradicia were in laboratory; however, other parasites were identified in 25 wild murines. The prevalence rates of Schistosoma sinensis, Capillaria hepatica and Hymenolepis nana were 2.24% (20/891), 0.90% (8/891) and 0.56% (5/891), and the prevalence of S. sinensis and C. hepatica co-infection was 0.90% (8/891), respectively. Conclusions S. sinensis, C. hepatica and H. nana are predominant parasite species in wild murines in schistosomiasis-endemic areas of Yunan Province. No S. japonicum infection was detected during the study period; however, there is still a risk of wild murines as a potential source of infection for schistosomiasis transmission. Continuous intensified surveillance of S. japonicum infections in wild murines is a critical programme in schistosomiasis surveillance and early warning in Yunnan Province.
5.Effect of Zhengan Xifengtang on Intestinal Mucosal Barrier in Spontaneously Hypertensive Rats via FXR-MLCK/p-MLC Pathway
Meilong SI ; Hua JIN ; Yu WANG ; Qiuju ZHANG ; Tao LIU ; Yun YONG ; Xuan BAO
Chinese Journal of Experimental Traditional Medical Formulae 2026;32(21):1-10
ObjectiveTo investigate the repair effects of Zhengan Xifengtang on intestinal mucosal barrier in spontaneously hypertensive rats (SHRs) through the pathways of farnesoid X receptor (FXR)-myosin light chain kinase (MLCK)/phosphorylated myosin light chain (p-MLC) and its potential mechanism. MethodsForty 10-week-old male SHRs were randomly divided into model group, amlodipine besylate group (0.5 mg·kg-1·d-1), and high, middle and low dose groups of Zhengan Xifengtang (34.5, 17.25, 8.625 g·kg-1·d-1); eight age-matched male Wistar-Kyoto (WKY) rats of the same origin served as the normal control group. Drug intervention was carried out for 8 weeks, and the blood pressure of the rats was measured regularly. After the intervention, the rats were euthanized to collect tissue samples. Hematoxylin and eosin (HE) staining and Alcian blue-periodic acid-Schiff (AB-PAS) staining were used to evaluate the pathological morphology and the number of goblet cells in colonic mucosa. Enzyme-linked immunosorbent assay (ELISA) was employed to measure plasma lipopolysaccharide (LPS) and diamine oxidase (DAO) levels in each group of rats. Immunofluorescence (IF) assay was used to detect the relative fluorescence intensity of FXR and p-MLC in colonic tissue. Western blot was used to detect the zonula occludens-1 (ZO-1), Occludin, Claudin-1, junctional adhesion molecule-1 (JAM-1), mucin-2 (MUC2), FXR, MLCK, and p-MLC protein expression in colon tissue. Real-time fluorescence quantitative polymerase chain reaction (Real-time PCR) was used to detect mRNA expression levels of ZO-1, Occludin, Claudin-1, JAM-1, MUC2, FXR, MLCK, and MLC in colon tissue. ResultsCompared with the normal group, the blood pressure in the model group increased significantly (P<0.01), the colonic mucosal structure was seriously damaged, and the number of goblet cells decreased significantly. The contents of LPS and DAO increased significantly (P<0.01), the relative fluorescence intensity of FXR in colon decreased, while that of p-MLC increased (P<0.01). The protein and mRNA expressions of ZO-1, Claudin-1, JAM-1, Occludin, MUC2 and FXR decreased significantly (P<0.01), whereas the protein expression of MLCK and p-MLC increased significantly (P<0.01). Additionally, the mRNA expression of MLCK and MLC increased significantly (P<0.01). Compared with the model group, the Zhengan Xifengtang groups at various dosages and the amlodipine besylate group showed significantly reduced blood pressure (P<0.01). The damage of colonic mucosa structure was alleviated, the infiltration of inflammatory cells decreased, and the number of goblet cells increased. LPS and DAO levels were decreased (P<0.05, P<0.01). In the colon, the relative fluorescence intensity of FXR increased, while that of p-MLC decreased (P<0.05, P<0.01). The protein and mRNA expression levels of ZO-1, Claudin-1, JAM-1, Occludin, and FXR increased significantly (P<0.05, P<0.01), while the protein expression of MLCK and p-MLC decreased significantly (P<0.05, P<0.01). Furthermore, the mRNA expression of MLCK and MLC decreased significantly (P<0.05, P<0.01), and the protein expression of MUC2 increased significantly (P<0.05, P<0.01). The expression of MUC2 mRNA in each dose group of Zhengan Xifengtang increased significantly (P<0.05, P<0.01). ConclusionZhengan Xifengtang may regulate the FXR-MLCK/p-MLC signaling pathway and enhance the expression of tight junction protein, thereby reducing intestinal mucosal permeability, promoting mucosal barrier repair, decreasing LPS release into the blood, and ultimately lowering blood pressure.
6.Effect of Zhengan Xifengtang on Intestinal Mucosal Barrier in Spontaneously Hypertensive Rats via FXR-MLCK/p-MLC Pathway
Meilong SI ; Hua JIN ; Yu WANG ; Qiuju ZHANG ; Tao LIU ; Yun YONG ; Xuan BAO
Chinese Journal of Experimental Traditional Medical Formulae 2026;32(21):1-10
ObjectiveTo investigate the repair effects of Zhengan Xifengtang on intestinal mucosal barrier in spontaneously hypertensive rats (SHRs) through the pathways of farnesoid X receptor (FXR)-myosin light chain kinase (MLCK)/phosphorylated myosin light chain (p-MLC) and its potential mechanism. MethodsForty 10-week-old male SHRs were randomly divided into model group, amlodipine besylate group (0.5 mg·kg-1·d-1), and high, middle and low dose groups of Zhengan Xifengtang (34.5, 17.25, 8.625 g·kg-1·d-1); eight age-matched male Wistar-Kyoto (WKY) rats of the same origin served as the normal control group. Drug intervention was carried out for 8 weeks, and the blood pressure of the rats was measured regularly. After the intervention, the rats were euthanized to collect tissue samples. Hematoxylin and eosin (HE) staining and Alcian blue-periodic acid-Schiff (AB-PAS) staining were used to evaluate the pathological morphology and the number of goblet cells in colonic mucosa. Enzyme-linked immunosorbent assay (ELISA) was employed to measure plasma lipopolysaccharide (LPS) and diamine oxidase (DAO) levels in each group of rats. Immunofluorescence (IF) assay was used to detect the relative fluorescence intensity of FXR and p-MLC in colonic tissue. Western blot was used to detect the zonula occludens-1 (ZO-1), Occludin, Claudin-1, junctional adhesion molecule-1 (JAM-1), mucin-2 (MUC2), FXR, MLCK, and p-MLC protein expression in colon tissue. Real-time fluorescence quantitative polymerase chain reaction (Real-time PCR) was used to detect mRNA expression levels of ZO-1, Occludin, Claudin-1, JAM-1, MUC2, FXR, MLCK, and MLC in colon tissue. ResultsCompared with the normal group, the blood pressure in the model group increased significantly (P<0.01), the colonic mucosal structure was seriously damaged, and the number of goblet cells decreased significantly. The contents of LPS and DAO increased significantly (P<0.01), the relative fluorescence intensity of FXR in colon decreased, while that of p-MLC increased (P<0.01). The protein and mRNA expressions of ZO-1, Claudin-1, JAM-1, Occludin, MUC2 and FXR decreased significantly (P<0.01), whereas the protein expression of MLCK and p-MLC increased significantly (P<0.01). Additionally, the mRNA expression of MLCK and MLC increased significantly (P<0.01). Compared with the model group, the Zhengan Xifengtang groups at various dosages and the amlodipine besylate group showed significantly reduced blood pressure (P<0.01). The damage of colonic mucosa structure was alleviated, the infiltration of inflammatory cells decreased, and the number of goblet cells increased. LPS and DAO levels were decreased (P<0.05, P<0.01). In the colon, the relative fluorescence intensity of FXR increased, while that of p-MLC decreased (P<0.05, P<0.01). The protein and mRNA expression levels of ZO-1, Claudin-1, JAM-1, Occludin, and FXR increased significantly (P<0.05, P<0.01), while the protein expression of MLCK and p-MLC decreased significantly (P<0.05, P<0.01). Furthermore, the mRNA expression of MLCK and MLC decreased significantly (P<0.05, P<0.01), and the protein expression of MUC2 increased significantly (P<0.05, P<0.01). The expression of MUC2 mRNA in each dose group of Zhengan Xifengtang increased significantly (P<0.05, P<0.01). ConclusionZhengan Xifengtang may regulate the FXR-MLCK/p-MLC signaling pathway and enhance the expression of tight junction protein, thereby reducing intestinal mucosal permeability, promoting mucosal barrier repair, decreasing LPS release into the blood, and ultimately lowering blood pressure.
7.Synergistic activity of plant essential oils with d-cyphenothrin against Blattella germanica
Yun-yan LAI ; Cai-ling GUAN ; Ying-hua WU ; Jian ZHU
Acta Parasitologica et Medica Entomologica Sinica 2026;33(3):216-222
Objective In this study, the resistance of Blattella germanica to D-cyphenothrin in Guangdong Province was analyzed. Further, the contact activity of eight types of plant essential oils against B. germanica and their synergistic effects with D-cyphenothrin were tested and screened, providing a basis for slowing down insecticide resistance in pests and developing plant synergists. Methods The drip test method was used to measure the resistance levels of B. germanica to D-cyphenothrin in four cities of Guangdong Province:Zhongshan City, Foshan City, Zhuhai City, and Jiangmen City. In addition, the contact killing activities of eight types of plant essential oils against B. germanica, namely, garlic, cinnamon, clove, camphor, eucalyptus leaves, tea tree, Angelica dahurica and peppermint, and their synergistic activities with D-cyphenothrin were evaluated. Results Except for B. germanica in the Xiaolan area of Zhongshan, which was moderately resistant, B. germanica in the other four towns in Guangdong were all highly resistant. Among the eight essential oils tested, garlic essential oil had the strongest toxic activity against B. germanica, with LD50 values of 45.01 μg/individual. A concentration of 2% essential oil plus D-cyphenothrin (LD20)was used to screen for synergistic activity. After 24 h of treatment, Angelica dahurica, garlic, peppermint, camphor, and tea tree essential oils showed synergistic activity. Of these, A. dahurica essential oil had the strongest synergistic activity, with a synergistic coefficient of 125%. Conclusions The essential oil of garlic had the strongest toxic activity against B. germanica, and the essential oils of A. dahurica and garlic together had the strongest synergistic activity with D-cyphenothrin, thereby providing a reference for developing natural plant synergists.
8.Mitochondial-located miRNAs in The Regulation of mtDNA Expression
Peng-Xiao WANG ; Le-Rong CHEN ; Zhen WANG ; Jian-Gang LONG ; Yun-Hua PENG
Progress in Biochemistry and Biophysics 2025;52(7):1649-1660
Mitochondria, functioning not only as the central hub of cellular energy metabolism but also as semi-autonomous organelles, orchestrate cellular fate decisions through their endogenous mitochondrial DNA (mtDNA), which encodes core components of the electron transport chain. Emerging research has identified microRNAs localized within mitochondria, termed mitochondria-located microRNAs (mitomiRs). Recent studies have revealed that mitomiRs are transcribed from nuclear DNA (nDNA), processed and matured in the cytoplasm, and subsequently transported into mitochondria. mitomiRs regulate mtDNA through diverse mechanisms, including modulation of mtDNA expression at the translational level and direct binding to mtDNA to influence transcription. Aberrant expression of mitomiRs leads to mitochondrial dysfunction and contributes to the pathogenesis of metabolic diseases. Restoring mitomiR expression to physiological levels using mitomiRs mimics or inhibitors has been shown to improve mitochondrial function and alleviate related diseases. Consequently, the regulatory mechanisms of mitomiRs have become a major focus in mitochondrial research. Given that mitomiRs are located in mitochondria, targeted delivery strategies designed for mtDNA can be adapted for the delivery of mitomiRs mimics or inhibitors. However, numerous intracellular and extracellular barriers remain, highlighting the need for more precise and efficient delivery systems in the future. The regulation of mtDNA expression mediated by mitomiRs not only expands our understanding of miRNA functions in post-transcriptional gene regulation but also provides promising molecular targets for the treatment of mitochondrial-related diseases. This review systematically summarizes recent research progress on mitomiRs in regulating mtDNA expression and discusses the underlying mechanisms of mitomiRs-mtDNA interactions. Additionally, it provides new perspectives on precision therapeutic strategies, with a particular emphasis on mitomiRs-based regulation of mitochondrial function in mitochondrial-related diseases.
9.Autophagy in Oligodendrocyte Lineage Cells Controls Oligodendrocyte Numbers and Myelin Integrity in an Age-dependent Manner.
Hong CHEN ; Gang YANG ; De-En XU ; Yu-Tong DU ; Chao ZHU ; Hua HU ; Li LUO ; Lei FENG ; Wenhui HUANG ; Yan-Yun SUN ; Quan-Hong MA
Neuroscience Bulletin 2025;41(3):374-390
Oligodendrocyte lineage cells, including oligodendrocyte precursor cells (OPCs) and oligodendrocytes (OLs), are essential in establishing and maintaining brain circuits. Autophagy is a conserved process that keeps the quality of organelles and proteostasis. The role of autophagy in oligodendrocyte lineage cells remains unclear. The present study shows that autophagy is required to maintain the number of OPCs/OLs and myelin integrity during brain aging. Inactivation of autophagy in oligodendrocyte lineage cells increases the number of OPCs/OLs in the developing brain while exaggerating the loss of OPCs/OLs with brain aging. Inactivation of autophagy in oligodendrocyte lineage cells impairs the turnover of myelin basic protein (MBP). It causes MBP to accumulate in the cytoplasm as multimeric aggregates and fails to be incorporated into integral myelin, which is associated with attenuated endocytic recycling. Inactivation of autophagy in oligodendrocyte lineage cells impairs myelin integrity and causes demyelination. Thus, this study shows autophagy is required to maintain myelin quality during aging by controlling the turnover of myelin components.
Animals
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Autophagy/physiology*
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Oligodendroglia/metabolism*
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Myelin Sheath/physiology*
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Aging/pathology*
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Myelin Basic Protein/metabolism*
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Cell Lineage/physiology*
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Mice
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Oligodendrocyte Precursor Cells
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Mice, Inbred C57BL
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Brain/cytology*
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Cells, Cultured
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Cell Count
10.Correction to: Autophagy in Oligodendrocyte Lineage Cells Controls Oligodendrocyte Numbers and Myelin Integrity in an Age-dependent Manner.
Hong CHEN ; Gang YANG ; De-En XU ; Yu-Tong DU ; Chao ZHU ; Hua HU ; Li LUO ; Lei FENG ; Wenhui HUANG ; Yan-Yun SUN ; Quan-Hong MA
Neuroscience Bulletin 2025;41(3):547-548


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