NK 1001
* Please be kindly noted products are not for therapeutic use. We do not sell to patients.
| Category | Antibiotics |
| Catalog number | BBF-03689 |
| CAS | 53025-93-7 |
| Molecular Weight | 485.48 |
| Molecular Formula | C18H35N3O12 |
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Description
NK 1001 is produced by the strain of Streptomyces kanamyceticus var.. NK 1001 has weak activity against gram-positive, gram-negative and mycobacterium bacteria.
Specification
| Synonyms | Antibiotic NK 1001; 4,6-Diamino-3-(hexopyranosyloxy)-2-hydroxycyclohexyl 6-amino-6-deoxyhexopyranoside |
| IUPAC Name | (2R,3S,4S,5R,6R)-2-(aminomethyl)-6-[(1S,2R,3R,4S,6R)-4,6-diamino-2-hydroxy-3-[(2S,3R,4S,5S,6R)-3,4,5-trihydroxy-6-(hydroxymethyl)oxan-2-yl]oxycyclohexyl]oxyoxane-3,4,5-triol |
| Canonical SMILES | C1C(C(C(C(C1N)OC2C(C(C(C(O2)CO)O)O)O)O)OC3C(C(C(C(O3)CN)O)O)O)N |
| InChI | InChI=1S/C18H35N3O12/c19-2-6-8(23)10(25)12(27)17(30-6)32-15-4(20)1-5(21)16(14(15)29)33-18-13(28)11(26)9(24)7(3-22)31-18/h4-18,22-29H,1-3,19-21H2/t4-,5+,6-,7-,8-,9-,10+,11+,12-,13-,14-,15+,16-,17-,18-/m1/s1 |
| InChI Key | NZCOZAMBHLSNDW-GUKOCFKPSA-N |
Properties
| Appearance | Colorless Crystalline |
| Antibiotic Activity Spectrum | Gram-positive bacteria; Gram-negative bacteria; mycobacteria |
| Boiling Point | 794.7°C at 760 mmHg |
| Melting Point | 238-242°C |
| Density | 1.66 g/cm3 |
Reference Reading
1. The Social Effects of Emotions
Gerben A van Kleef, Stéphane Côté Annu Rev Psychol. 2022 Jan 4;73:629-658. doi: 10.1146/annurev-psych-020821-010855. Epub 2021 Jul 19.
We review the burgeoning literature on the social effects of emotions, documenting the impact of emotional expressions on observers' affect, cognition, and behavior. We find convergent evidence that emotional expressions influence observers' affective reactions, inferential processes, and behaviors across various domains, including close relationships, group decision making, customer service, negotiation, and leadership. Affective reactions and inferential processes mediate the effects of emotional expressions on observers' behaviors, and the relative potency of these mediators depends on the observers' information processing and the perceived appropriateness of the emotional expressions. The social effects of emotions are similar across expressive modalities (face, voice, body, text, symbols). We discuss the findings in relation to emotional contagion, emotional intelligence, emotion regulation, emotions as social information (EASI) theory, and the functionality of emotions in engendering social influence. Finally, we identify gaps in our current understanding of the topic and call for interdisciplinary collaboration and methodological diversification.
2. mTOR pathway gene mutations predict response to immune checkpoint inhibitors in multiple cancers
Lei Cheng, Yanan Wang, Lixin Qiu, Yuanyuan Chang, Haijiao Lu, Chenchen Liu, Bo Zhang, Yan Zhou, Hao Bai, Liwen Xiong, Hua Zhong, Wei Nie, Baohui Han J Transl Med. 2022 May 31;20(1):247. doi: 10.1186/s12967-022-03436-1.
Background: mTOR pathway is known to promote cancer malignancy and influence cancer immunity but is unknown for its role in immune checkpoint inhibitors (ICI) therapy. Methods: Using Memorial Sloan-Kettering Cancer Center dataset (MSKCC), we extracted mTOR pathway gene mutations for stepwise Cox regression in 1661 cancer patients received ICI. We associated the mutation of the gene signature resulted from the stepwise Cox regression with the 1661 patients' survival. Other 553 ICI-treated patients were collected from 6 cohorts for validation. We also performed this survival association in patients without ICI treatment from MSKCC as discovery (n = 2244) and The Cancer Genome Atlas (TCGA) as validation (n = 763). Pathway enrichment analysis were performed using transcriptome profiles from TCGA and IMvigor210 trial to investigate the potential mechanism. Results: We identified 8 genes involved in mTOR pathway, including FGFR2, PIK3C3, FGFR4, FGFR1, FGF3, AKT1, mTOR, and RPTOR, resulted from stepwise Cox regression in discovery (n = 1661). In both discovery (n = 1661) and validation (n = 553), the mutation of the 8-gene signature was associated with better survival of the patients treated with ICI, which was independent of tumor mutation burden (TMB) and mainly attributed to the missense mutations. This survival association was not observed in patients without ICI therapy. Intriguingly, the mutation of the 8-gene signature was associated with increased TMB and PD1/PD-L1 expression. Immunologically, pathways involved in anti-tumor immune response were enriched in presence of this mutational signature in mTOR pathway, leading to increased infiltration of immune effector cells (e.g., CD8 + T cells, NK cells, and M1 macrophages), but decreased infiltration of immune inhibitory M2 macrophages. Conclusions: These results suggested that mTOR pathway gene mutations were predictive of better survival upon ICI treatment in multiple cancers, likely by its association with enhanced anti-tumor immunity. Larger studies are warranted to validate our findings.
3. Borderline personality disorder classification based on brain network measures during emotion regulation
Henk Cremers, Linda van Zutphen, Sascha Duken, Gregor Domes, Andreas Sprenger, Lourens Waldorp, Arnoud Arntz Eur Arch Psychiatry Clin Neurosci. 2021 Sep;271(6):1169-1178. doi: 10.1007/s00406-020-01201-3. Epub 2020 Dec 2.
Borderline Personality Disorder (BPD) is characterized by an increased emotional sensitivity and dysfunctional capacity to regulate emotions. While amygdala and prefrontal cortex interactions are regarded as the critical neural mechanisms underlying these problems, the empirical evidence hereof is inconsistent. In the current study, we aimed to systematically test different properties of brain connectivity and evaluate the predictive power to detect borderline personality disorder. Patients with borderline personality disorder (n = 51), cluster C personality disorder (n = 26) and non-patient controls (n = 44), performed an fMRI emotion regulation task. Brain network analyses focused on two properties of task-related connectivity: phasic refers to task-event dependent changes in connectivity, while tonic was defined as task-stable background connectivity. Three different network measures were estimated (strength, local efficiency, and participation coefficient) and entered as separate models in a nested cross-validated linear support vector machine classification analysis. Borderline personality disorder vs. non-patient controls classification showed a balanced accuracy of 55%, which was not significant under a permutation null-model, p = 0.23. Exploratory analyses did indicate that the tonic strength model was the highest performing model (balanced accuracy 62%), and the amygdala was one of the most important features. Despite being one of the largest data-sets in the field of BPD fMRI research, the sample size may have been limited for this type of classification analysis. The results and analytic procedures do provide starting points for future research, focusing on network measures of tonic connectivity, and potentially focusing on subgroups of BPD.
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Bio Calculators
* Our calculator is based on the following equation:
Concentration (start) x Volume (start) = Concentration (final) x Volume (final)
It is commonly abbreviated as: C1V1 = C2V2
* Total Molecular Weight:
g/mol
Tip: Chemical formula is case sensitive. C22H30N4O √ c22h30n40 ╳
