Ronald Vargas-Foitzick, Bayron García-Ordenes, Donovan Iratchet, Angie Acuña, Spencer Alcayaga, Cristian Fernández, Karla Toledo, Marianela Rodríguez, Carolina Naranjo, René Bustamante, Paola A Haeger
{"title":"Exercise reduces physical alterations in a rat model of fetal alcohol spectrum disorders.","authors":"Ronald Vargas-Foitzick, Bayron García-Ordenes, Donovan Iratchet, Angie Acuña, Spencer Alcayaga, Cristian Fernández, Karla Toledo, Marianela Rodríguez, Carolina Naranjo, René Bustamante, Paola A Haeger","doi":"10.1186/s40659-024-00520-2","DOIUrl":"10.1186/s40659-024-00520-2","url":null,"abstract":"<p><strong>Background: </strong>Prenatal alcohol exposure (PAE) has serious physical consequences for children such as behavioral disabilities, growth disorders, neuromuscular problems, impaired motor coordination, and decreased muscle tone. However, it is not known whether loss of muscle strength occurs, and which interventions will effectively mitigate physical PAE impairments. We aimed to investigate whether physical alteration persists during adolescence and whether exercise is an effective intervention.</p><p><strong>Results: </strong>Using paradigms to evaluate different physical qualities, we described that early adolescent PAE animals have significant alterations in agility and strength, without alterations in balance and coordination compared to CTRL animals. We evaluated the effectiveness of 3 different exercise protocols for 4 weeks: Enrichment environment (EE), Endurance exercise (EEX), and Resistance exercise (REX). The enriched environment significantly improved the strength in the PAE group but not in the CTRL group whose strength parameters were maintained even during exercise. Resistance exercise showed the greatest benefits in gaining strength, and endurance exercise did not.</p><p><strong>Conclusion: </strong>PAE induced a significant decrease in strength compared to CTRL in PND21. Resistance exercise is the most effective to reverse the effects of PAE on muscular strength. Our data suggests that individualized, scheduled, and supervised training of resistance is more beneficial than endurance or enriched environment exercise for adolescents FASD.</p>","PeriodicalId":9084,"journal":{"name":"Biological Research","volume":null,"pages":null},"PeriodicalIF":4.3,"publicationDate":"2024-06-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11193177/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141436675","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Bastián I Cortés, Rodrigo C Meza, Carlos Ancatén-González, Nicolás M Ardiles, María-Ignacia Aránguiz, Hideaki Tomita, David R Kaplan, Francisca Cornejo, Alexia Nunez-Parra, Pablo R Moya, Andrés E Chávez, Gonzalo I Cancino
{"title":"Loss of protein tyrosine phosphatase receptor delta PTPRD increases the number of cortical neurons, impairs synaptic function and induces autistic-like behaviors in adult mice.","authors":"Bastián I Cortés, Rodrigo C Meza, Carlos Ancatén-González, Nicolás M Ardiles, María-Ignacia Aránguiz, Hideaki Tomita, David R Kaplan, Francisca Cornejo, Alexia Nunez-Parra, Pablo R Moya, Andrés E Chávez, Gonzalo I Cancino","doi":"10.1186/s40659-024-00522-0","DOIUrl":"10.1186/s40659-024-00522-0","url":null,"abstract":"<p><strong>Background: </strong>The brain cortex is responsible for many higher-level cognitive functions. Disruptions during cortical development have long-lasting consequences on brain function and are associated with the etiology of brain disorders. We previously found that the protein tyrosine phosphatase receptor delta Ptprd, which is genetically associated with several human neurodevelopmental disorders, is essential to cortical brain development. Loss of Ptprd expression induced an aberrant increase of excitatory neurons in embryonic and neonatal mice by hyper-activating the pro-neurogenic receptors TrkB and PDGFRβ in neural precursor cells. However, whether these alterations have long-lasting consequences in adulthood remains unknown.</p><p><strong>Results: </strong>Here, we found that in Ptprd+/- or Ptprd-/- mice, the developmental increase of excitatory neurons persists through adulthood, affecting excitatory synaptic function in the medial prefrontal cortex. Likewise, heterozygosity or homozygosity for Ptprd also induced an increase of inhibitory cortical GABAergic neurons and impaired inhibitory synaptic transmission. Lastly, Ptprd+/- or Ptprd-/- mice displayed autistic-like behaviors and no learning and memory impairments or anxiety.</p><p><strong>Conclusions: </strong>These results indicate that loss of Ptprd has long-lasting effects on cortical neuron number and synaptic function that may aberrantly impact ASD-like behaviors.</p>","PeriodicalId":9084,"journal":{"name":"Biological Research","volume":null,"pages":null},"PeriodicalIF":4.3,"publicationDate":"2024-06-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11186208/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141417716","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Juan E Tichauer, Matías Lira, Waldo Cerpa, Juan A Orellana, Juan C Sáez, Maximiliano Rovegno
{"title":"Inhibition of astroglial hemichannels prevents synaptic transmission decline during spreading depression.","authors":"Juan E Tichauer, Matías Lira, Waldo Cerpa, Juan A Orellana, Juan C Sáez, Maximiliano Rovegno","doi":"10.1186/s40659-024-00519-9","DOIUrl":"10.1186/s40659-024-00519-9","url":null,"abstract":"<p><strong>Background: </strong>Spreading depression (SD) is an intriguing phenomenon characterized by massive slow brain depolarizations that affect neurons and glial cells. This phenomenon is repetitive and produces a metabolic overload that increases secondary damage. However, the mechanisms associated with the initiation and propagation of SD are unknown. Multiple lines of evidence indicate that persistent and uncontrolled opening of hemichannels could participate in the pathogenesis and progression of several neurological disorders including acute brain injuries. Here, we explored the contribution of astroglial hemichannels composed of connexin-43 (Cx43) or pannexin-1 (Panx1) to SD evoked by high-K<sup>+</sup> stimulation in brain slices.</p><p><strong>Results: </strong>Focal high-K<sup>+</sup> stimulation rapidly evoked a wave of SD linked to increased activity of the Cx43 and Panx1 hemichannels in the brain cortex, as measured by light transmittance and dye uptake analysis, respectively. The activation of these channels occurs mainly in astrocytes but also in neurons. More importantly, the inhibition of both the Cx43 and Panx1 hemichannels completely prevented high K<sup>+</sup>-induced SD in the brain cortex. Electrophysiological recordings also revealed that Cx43 and Panx1 hemichannels critically contribute to the SD-induced decrease in synaptic transmission in the brain cortex and hippocampus.</p><p><strong>Conclusions: </strong>Targeting Cx43 and Panx1 hemichannels could serve as a new therapeutic strategy to prevent the initiation and propagation of SD in several acute brain injuries.</p>","PeriodicalId":9084,"journal":{"name":"Biological Research","volume":null,"pages":null},"PeriodicalIF":6.7,"publicationDate":"2024-06-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11167948/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141309981","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Leina Moro-Pérez, Tammy Boggiano-Ayo, Sum Lai Lozada-Chang, Olga Lidia Fernández-Saiz, Beatriz Perez-Masson, Kathya Rashida de la Luz, Jose Alberto Gómez-Pérez
{"title":"Correction: Conformational characterization of the mammalian-expressed SARS-CoV-2 recombinant receptor binding domain, a COVID-19 vaccine.","authors":"Leina Moro-Pérez, Tammy Boggiano-Ayo, Sum Lai Lozada-Chang, Olga Lidia Fernández-Saiz, Beatriz Perez-Masson, Kathya Rashida de la Luz, Jose Alberto Gómez-Pérez","doi":"10.1186/s40659-024-00514-0","DOIUrl":"10.1186/s40659-024-00514-0","url":null,"abstract":"","PeriodicalId":9084,"journal":{"name":"Biological Research","volume":null,"pages":null},"PeriodicalIF":6.7,"publicationDate":"2024-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11143554/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141185852","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"The current insights of mitochondrial hormesis in the occurrence and treatment of bone and cartilage degeneration.","authors":"Wacili Da, Quan Chen, Bin Shen","doi":"10.1186/s40659-024-00494-1","DOIUrl":"10.1186/s40659-024-00494-1","url":null,"abstract":"<p><p>It is widely acknowledged that aging, mitochondrial dysfunction, and cellular phenotypic abnormalities are intricately associated with the degeneration of bone and cartilage. Consequently, gaining a comprehensive understanding of the regulatory patterns governing mitochondrial function and its underlying mechanisms holds promise for mitigating the progression of osteoarthritis, intervertebral disc degeneration, and osteoporosis. Mitochondrial hormesis, referred to as mitohormesis, represents a cellular adaptive stress response mechanism wherein mitochondria restore homeostasis and augment resistance capabilities against stimuli by generating reactive oxygen species (ROS), orchestrating unfolded protein reactions (UPRmt), inducing mitochondrial-derived peptides (MDP), instigating mitochondrial dynamic changes, and activating mitophagy, all prompted by low doses of stressors. The varying nature, intensity, and duration of stimulus sources elicit divergent degrees of mitochondrial stress responses, subsequently activating one or more signaling pathways to initiate mitohormesis. This review focuses specifically on the effector molecules and regulatory networks associated with mitohormesis, while also scrutinizing extant mechanisms of mitochondrial dysfunction contributing to bone and cartilage degeneration through oxidative stress damage. Additionally, it underscores the potential of mechanical stimulation, intermittent dietary restrictions, hypoxic preconditioning, and low-dose toxic compounds to trigger mitohormesis, thereby alleviating bone and cartilage degeneration.</p>","PeriodicalId":9084,"journal":{"name":"Biological Research","volume":null,"pages":null},"PeriodicalIF":6.7,"publicationDate":"2024-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11143644/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141185843","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Chenyi Zhong, Huiyuan Wang, Xiong Yuan, Yuheng He, Jing Cong, Rui Yang, Wenjie Ma, Li Gao, Chao Gao, Yugui Cui, Jie Wu, Rongrong Tan, Danhua Pu
{"title":"The crucial role of HFM1 in regulating FUS ubiquitination and localization for oocyte meiosis prophase I progression in mice.","authors":"Chenyi Zhong, Huiyuan Wang, Xiong Yuan, Yuheng He, Jing Cong, Rui Yang, Wenjie Ma, Li Gao, Chao Gao, Yugui Cui, Jie Wu, Rongrong Tan, Danhua Pu","doi":"10.1186/s40659-024-00518-w","DOIUrl":"10.1186/s40659-024-00518-w","url":null,"abstract":"<p><strong>Background: </strong>Helicase for meiosis 1 (HFM1), a putative DNA helicase expressed in germ-line cells, has been reported to be closely associated with premature ovarian insufficiency (POI). However, the underlying molecular mechanism has not been clearly elucidated. The aim of this study was to investigate the function of HFM1 in the first meiotic prophase of mouse oocytes.</p><p><strong>Results: </strong>The results suggested that the deficiency of HFM1 resulting in increased apoptosis and depletion of oocytes in mice, while the oocytes were arrested in the pachytene stage of the first meiotic prophase. In addition, impaired DNA double-strand break repair and disrupted synapsis were observed in the absence of HFM1. Further investigation revealed that knockout of HFM1 promoted ubiquitination and degradation of FUS protein mediated by FBXW11. Additionally, the depletion of HFM1 altered the intranuclear localization of FUS and regulated meiotic- and oocyte development-related genes in oocytes by modulating the expression of BRCA1.</p><p><strong>Conclusions: </strong>These findings elaborated that the critical role of HFM1 in orchestrating the regulation of DNA double-strand break repair and synapsis to ensure meiosis procession and primordial follicle formation. This study provided insights into the pathogenesis of POI and highlighted the importance of HFM1 in maintaining proper meiotic function in mouse oocytes.</p>","PeriodicalId":9084,"journal":{"name":"Biological Research","volume":null,"pages":null},"PeriodicalIF":6.7,"publicationDate":"2024-05-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11140966/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141185835","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Eunhye Kim, Lian Cai, Hyerin Choi, Mirae Kim, Sang-Hwan Hyun
{"title":"Distinct properties of putative trophoblast stem cells established from somatic cell nuclear-transferred pig blastocysts.","authors":"Eunhye Kim, Lian Cai, Hyerin Choi, Mirae Kim, Sang-Hwan Hyun","doi":"10.1186/s40659-024-00516-y","DOIUrl":"10.1186/s40659-024-00516-y","url":null,"abstract":"<p><strong>Background: </strong>Genetically modified pigs are considered ideal models for studying human diseases and potential sources for xenotransplantation research. However, the somatic cell nuclear transfer (SCNT) technique utilized to generate these cloned pig models has low efficiency, and fetal development is limited due to placental abnormalities.</p><p><strong>Results: </strong>In this study, we unprecedentedly established putative porcine trophoblast stem cells (TSCs) using SCNT and in vitro-fertilized (IVF) blastocysts through the activation of Wing-less/Integrated (Wnt) and epidermal growth factor (EGF) pathways, inhibition of transforming growth factor-β (TGFβ) and Rho-associated protein kinase (ROCK) pathways, and supplementation with ascorbic acid. We also compared the transcripts of putative TSCs originating from SCNT and IVF embryos and their differentiated lineages. A total of 19 porcine TSCs exhibiting typical characteristics were established from SCNT and IVF blastocysts (TSCs<sup>NT</sup> and TSCs<sup>IVF</sup>). Compared with the TSCs<sup>IVF</sup>, TSCs<sup>NT</sup> showed distinct expression patterns suggesting unique TSCs<sup>NT</sup> characteristics, including decreased mRNA expression of genes related to apposition, steroid hormone biosynthesis, angiopoiesis, and RNA stability.</p><p><strong>Conclusion: </strong>This study provides valuable information and a powerful model for studying the abnormal development and dysfunction of trophoblasts and placentas in cloned pigs.</p>","PeriodicalId":9084,"journal":{"name":"Biological Research","volume":null,"pages":null},"PeriodicalIF":6.7,"publicationDate":"2024-05-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11137969/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141174961","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Lin-Wei Ma, Yu-Fan Liu, Hui Zhang, Chang-Jun Huang, Ang Li, Xin-Zhe Qu, Jia-Piao Lin, Yan Yang, Yong-Xing Yao
{"title":"Electroacupuncture attenuates neuropathic pain via suppressing BIP-IRE-1α-mediated endoplasmic reticulum stress in the anterior cingulate cortex","authors":"Lin-Wei Ma, Yu-Fan Liu, Hui Zhang, Chang-Jun Huang, Ang Li, Xin-Zhe Qu, Jia-Piao Lin, Yan Yang, Yong-Xing Yao","doi":"10.1186/s40659-024-00511-3","DOIUrl":"https://doi.org/10.1186/s40659-024-00511-3","url":null,"abstract":"Studies have suggested that endoplasmic reticulum stress (ERS) is involved in neurological dysfunction and that electroacupuncture (EA) attenuates neuropathic pain (NP) via undefined pathways. However, the role of ERS in the anterior cingulate cortex (ACC) in NP and the effect of EA on ERS in the ACC have not yet been investigated. In this study, an NP model was established by chronic constriction injury (CCI) of the left sciatic nerve in rats, and mechanical and cold tests were used to evaluate behavioral hyperalgesia. The protein expression and distribution were evaluated using western blotting and immunofluorescence. The results showed that glucose-regulated protein 78 (BIP) and inositol-requiring enzyme 1α (IRE-1α) were co-localized in neurons in the ACC. After CCI, BIP, IRE-1α, and phosphorylation of IRE-1α were upregulated in the ACC. Intra-ACC administration of 4-PBA and Kira-6 attenuated pain hypersensitivity and downregulated phosphorylation of IRE-1α, while intraperitoneal injection of 4-PBA attenuated hyperalgesia and inhibited the activation of P38 and JNK in ACC. In contrast, ERS activation by intraperitoneal injection of tunicamycin induced behavioral hyperalgesia in naive rats. Furthermore, EA attenuated pain hypersensitivity and inhibited the CCI-induced overexpression of BIP and pIRE-1α. Taken together, these results demonstrate that EA attenuates NP by suppressing BIP- and IRE-1α-mediated ERS in the ACC. Our study presents novel evidence that ERS in the ACC is implicated in the development of NP and provides insights into the molecular mechanisms involved in the analgesic effect of EA.","PeriodicalId":9084,"journal":{"name":"Biological Research","volume":null,"pages":null},"PeriodicalIF":6.7,"publicationDate":"2024-05-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141172922","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Mohamed Hussein Abdelgalil, Reem H Elhammamy, Hanan M Ragab, Eman Sheta, Ahmed Wahid
{"title":"The hepatoprotective effect of 4-phenyltetrahydroquinolines on carbon tetrachloride induced hepatotoxicity in rats through autophagy inhibition.","authors":"Mohamed Hussein Abdelgalil, Reem H Elhammamy, Hanan M Ragab, Eman Sheta, Ahmed Wahid","doi":"10.1186/s40659-024-00510-4","DOIUrl":"10.1186/s40659-024-00510-4","url":null,"abstract":"<p><strong>Background: </strong>The liver serves as a metabolic hub within the human body, playing a crucial role in various essential functions, such as detoxification, nutrient metabolism, and hormone regulation. Therefore, protecting the liver against endogenous and exogenous insults has become a primary focus in medical research. Consequently, the potential hepatoprotective properties of multiple 4-phenyltetrahydroquinolines inspired us to thoroughly study the influence of four specially designed and synthesized derivatives on carbon tetrachloride (CCl4)-induced liver injury in rats.</p><p><strong>Methods and results: </strong>Seventy-seven Wistar albino male rats weighing 140 ± 18 g were divided into eleven groups to investigate both the toxicity profile and the hepatoprotective potential of 4-phenyltetrahydroquinolines. An in-vivo hepatotoxicity model was conducted using CCl4 (1 ml/kg body weight, a 1:1 v/v mixture with corn oil, i.p.) every 72 h for 14 days. The concurrent treatment of rats with our newly synthesized compounds (each at a dose of 25 mg/kg body weight, suspended in 0.5% CMC, p.o.) every 24 h effectively lowered transaminases, preserved liver tissue integrity, and mitigated oxidative stress and inflammation. Moreover, the histopathological examination of liver tissues revealed a significant reduction in liver fibrosis, which was further supported by the immunohistochemical analysis of α-SMA. Additionally, the expression of the apoptotic genes BAX and BCL2 was monitored using real-time PCR, which showed a significant decrease in liver apoptosis. Further investigations unveiled the ability of the compounds to significantly decrease the expression of autophagy-related proteins, Beclin-1 and LC3B, consequently inhibiting autophagy. Finally, our computer-assisted simulation dockingonfirmed the obtained experimental activities.</p><p><strong>Conclusion: </strong>Our findings suggest that derivatives of 4-phenyltetrahydroquinoline demonstrate hepatoprotective properties in CCl4-induced liver damage and fibrosis in rats. The potential mechanism of action may be due to the inhibition of autophagy in liver cells.</p>","PeriodicalId":9084,"journal":{"name":"Biological Research","volume":null,"pages":null},"PeriodicalIF":6.7,"publicationDate":"2024-05-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11129499/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141154037","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Elizabeth Tapia-Tapia, Pablo Aránguiz, Rodrigo Diaz, Luis Espinoza, Caroline R Weinstein-Oppenheimer, Mauricio Cuellar
{"title":"Effect of Cannabis sativa L. extracts, phytocannabinoids and their acetylated derivates on the SHSY-5Y neuroblastoma cells' viability and caspases 3/7 activation.","authors":"Elizabeth Tapia-Tapia, Pablo Aránguiz, Rodrigo Diaz, Luis Espinoza, Caroline R Weinstein-Oppenheimer, Mauricio Cuellar","doi":"10.1186/s40659-024-00506-0","DOIUrl":"10.1186/s40659-024-00506-0","url":null,"abstract":"<p><strong>Background: </strong>There is a need for novel treatments for neuroblastoma, despite the emergence of new biological and immune treatments, since refractory pediatric neuroblastoma is still a medical challenge. Phyto cannabinoids and their hemisynthetic derivatives have shown evidence supporting their anticancer potential. The aim of this research was to examine Phytocannabinoids or hemisynthetic cannabinoids, which reduce the SHSY-5Y, neuroblastoma cell line's viability.</p><p><strong>Methods: </strong>Hexane and acetyl acetate extracts were produced starting with Cannabis sativa L. as raw material, then, 9-tetrahidrocannabinol, its acid counterpart and CBN were isolated. In addition, acetylated derivatives of THC and CBN were synthesized. The identification and purity of the chemicals was determined by High Performance Liquid Chromatography and <sup>1</sup>H y <sup>13</sup>C Magnetic Nuclear Resonance. Then, the capacity to affect the viability of SHSY-5Y, a neuroblastoma cell line, was examined using the resazurin method. Finally, to gain insight into the mechanism of action of the extracts, phytocannabinoids and acetylated derivatives on the examined cells, a caspase 3/7 determination was performed on cells exposed to these compounds.</p><p><strong>Results: </strong>The structure and purity of the isolated compounds was demonstrated. The extracts, the phytocannabinoids and their acetylated counterparts inhibited the viability of the SHSY 5Y cells, being CBN the most potent of all the tested molecules with an inhibitory concentration of 50 percent of 9.5 µM.</p><p><strong>Conclusion: </strong>Each of the evaluated molecules exhibited the capacity to activate caspases 3/7, indicating that at least in part, the cytotoxicity of the tested phytocannabinoids and their hemi-synthetic derivatives is mediated by apoptosis.</p>","PeriodicalId":9084,"journal":{"name":"Biological Research","volume":null,"pages":null},"PeriodicalIF":6.7,"publicationDate":"2024-05-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11129430/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141157618","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}