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Negatively charged lipid bilayers enhance the interaction between a chemokine and an atypical chemokine receptor.
Assuntos
Bicamadas Lipídicas , Humanos , Bicamadas Lipídicas/metabolismo , Bicamadas Lipídicas/química , Quimiocinas/metabolismo , Receptores de Quimiocinas/metabolismoRESUMO
Highlights from the Science family of journals.
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Highlights from the Science family of journals.
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A negative allosteric modulator of the µ-opioid receptor enhances the efficacy of naloxone.
Assuntos
Naloxona , Antagonistas de Entorpecentes , Receptores Opioides mu , Receptores Opioides mu/metabolismo , Humanos , Regulação Alostérica , AnimaisRESUMO
Palmitoylation of intact or cleaved gasdermin D causes plasma membrane pore formation.
Assuntos
Lipoilação , Humanos , Membrana Celular/metabolismo , Peptídeos e Proteínas de Sinalização Intracelular/metabolismo , Peptídeos e Proteínas de Sinalização Intracelular/genética , Animais , Gasderminas , Proteínas de Ligação a FosfatoRESUMO
Highlights from the Science family of journals.
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Highlights from the Science family of journals.
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Antibody fragments can act as pharmacological tools to modulate the functions of G protein-coupled receptors.
Assuntos
Receptores Acoplados a Proteínas G , Anticorpos de Domínio Único , Anticorpos de Domínio Único/imunologia , Humanos , Receptores Acoplados a Proteínas G/metabolismo , Receptores Acoplados a Proteínas G/imunologia , AnimaisRESUMO
An unexpected integrin pairing enhances T cell receptor signaling and cytotoxicity in antitumor T cells.
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Integrinas , Neoplasias , Humanos , Transdução de Sinais , Linfócitos TRESUMO
Highlights from the Science family of journals.
RESUMO
The efficacy of therapeutic T cells is enhanced by incorporating mutations associated with autoimmunity or lymphoma.
Assuntos
Linfoma , Linfócitos T , Humanos , Autoimunidade , MutaçãoRESUMO
Highlights from the Science family of journals.
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Highlights from the Science family of journals.
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Few studies examined blood biomarkers informative of patient-reported outcome (PRO) of disability in people with multiple sclerosis (MS). We examined the associations between serum multi-protein biomarker profiles and patient-reported MS disability. In this cross-sectional study (2017-2020), adults with diagnosis of MS (or precursors) from two independent clinic-based cohorts were divided into a training and test set. For predictors, we examined seven clinical factors (age at sample collection, sex, race/ethnicity, disease subtype, disease duration, disease-modifying therapy [DMT], and time interval between sample collection and closest PRO assessment) and 19 serum protein biomarkers potentially associated with MS disease activity endpoints identified from prior studies. We trained machine learning (ML) models (Least Absolute Shrinkage and Selection Operator regression [LASSO], Random Forest, Extreme Gradient Boosting, Support Vector Machines, stacking ensemble learning, and stacking classification) for predicting Patient Determined Disease Steps (PDDS) score as the primary endpoint and reported model performance using the held-out test set. The study included 431 participants (mean age 49 years, 81% women, 94% non-Hispanic White). For binary PDDS score, combined feature input of routine clinical factors and the 19 proteins consistently outperformed base models (comprising clinical features alone or clinical features plus one single protein at a time) in predicting severe (PDDS ≥ 4) versus mild/moderate (PDDS < 4) disability across multiple machine learning approaches, with LASSO achieving the best area under the curve (AUCPDDS = 0.91) and other metrics. For ordinal PDDS score, LASSO model comprising combined clinical factors and 19 proteins as feature input (R2PDDS = 0.31) again outperformed base models. The two best-performing LASSO models (i.e., binary and ordinal PDDS score) shared six clinical features (age, sex, race/ethnicity, disease subtype, disease duration, DMT efficacy) and nine proteins (cluster of differentiation 6, CUB-domain-containing protein 1, contactin-2, interleukin-12 subunit-beta, neurofilament light chain [NfL], protogenin, serpin family A member 9, tumor necrosis factor superfamily member 13B, versican). By comparison, LASSO models with clinical features plus one single protein at a time as feature input did not select either NfL or glial fibrillary acidic protein (GFAP) as a final feature. Forcing either NfL or GFAP as a single protein feature into models did not improve performance beyond clinical features alone. Stacking classification model using five functional pathways to represent multiple proteins as meta-features implicated those involved in neuroaxonal integrity as significant contributors to predictive performance. Thus, serum multi-protein biomarker profiles improve the prediction of real-world MS disability status beyond clinical profile alone or clinical profile plus single protein biomarker, reaching clinically actionable performance.
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The actions of glucagon-like peptide 1 receptor agonists in the CNS reduce systemic inflammation.
Assuntos
Diabetes Mellitus Tipo 2 , Peptídeo 1 Semelhante ao Glucagon , Humanos , Encéfalo/metabolismo , Inflamação , Receptor do Peptídeo Semelhante ao Glucagon 1/agonistas , Receptor do Peptídeo Semelhante ao Glucagon 1/metabolismoRESUMO
Highlights from the Science family of journals.
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Ruptures in lysosomal membranes stimulate the formation of stress granules that plug the holes to enable repair.
Assuntos
Lisossomos , Grânulos de EstresseRESUMO
Highlights from the Science family of journals.
RESUMO
Highlights from the Science family of journals.
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Highlights from the Science family of journals.