PC-766B
PC-766B is a macrolide antibiotic. PC-766B is active against Gram-positive bacteria, and some fungi and yeasts, but inactive against Gram-negative bacteria. PC-766B shows antitumor activity against murine tumor cells. PC-766B has weak inhibitory activity against Na+, K+-ATPase.
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- CAS No.: 108375-77-5
- Formule: C43H68O12
- Masse moléculaire:776.99
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Stockage:
Please store the product under the recommended conditions in the Certificate of Analysis.
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Activité biologique
Description
IC50 & Target
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Macrolide |
Chemical Information
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CAS No. 108375-77-5
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Masse moléculaire 776.99
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Formule C43H68O12
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SMILES
O=C1O[C@@H]([C@H](/C=C/C=C(C[C@@H]([C@@H]([C@@H](/C=C(/C=C1\OC)C)C)O)C)\C)OC)[C@H]([C@H]([C@H](C)[C@]2(C[C@H]([C@@H]([C@H](O2)/C=C/C=C/C)C)O[C@H]3C[C@@H](O)[C@H](O)[C@H](O3)C)O)O)C
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Synonyms
Antibiotic PC-766B
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Structure Classification
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Initial Source
Nocardia brasiliensis
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Livraison
Room temperature in continental US; may vary elsewhere.
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Stockage
Please store the product under the recommended conditions in the Certificate of Analysis.
Protocole
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Gram Staining of Tissue Sections
Gram staining of tissue sections is a histochemical technique used to differentiate Gram-positive and Gram-negative bacteria within histological specimens based on differences in bacterial cell wall structure and dye retention, adapted from classical bacteriological Gram staining into tissue-compatible “histological Gram stain” variants. In tissue applications, modifications of the Brown-Hopps and Brown-Brenn methods are commonly used to improve differentiation of microorganisms embedded within host connective tissue and to reduce overstaining or loss of Gram-negative signal, which are known limitations of earlier approaches. The principle relies on crystal violet-iodine complex retention in Gram-positive organisms and subsequent decolorization and counterstaining steps that allow contrast visualization of Gram-negative organisms against tissue background.
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Subcutaneous Cell-Line-Derived Xenograft
Subcutaneous cell-line-derived xenograft (CDX) models are established by implanting cultured human cancer cell lines into immunodeficient mice, where the injected cells form localized tumors that can be monitored in vivo as a measure of tumorigenic potential, growth kinetics, and treatment response. These models are widely used in oncology research because they allow reproducible tumor formation and enable comparative assessment of tumor growth between different cell lines or genetic manipulations in a controlled in vivo microenvironment. Subcutaneous implantation of cancer cells in immunodeficient mice is a standard approach for evaluating tumor growth behavior and therapeutic response across multiple cancer types, including prostate, esophageal, pancreatic, and colon cancer models.
Pureté et documentation
Références
[1]. Kumagai K, et, al. PC-766B, a new macrolide antibiotic produced by Nocardia brasiliensis. I. Taxonomy, fermentation and biological activity. J Antibiot (Tokyo). 1993 Jun;46(6):972-8. [Content Brief]
[2]. Kumagai K, et, al. PC-766B, a new macrolide antibiotic produced by Nocardia brasiliensis. II. Isolation, physico-chemical properties and structure elucidation. J Antibiot (Tokyo). 1993 Jul;46(7):1139-44. [Content Brief]
Calculators
Concentration (start) × Volume (start) = Concentration (final) × Volume (final)