Investigation of 2-Hydroxypropyl-β-Cyclodextrin Treatment in a Neuronal-Like Cell Model of Niemann–Pick Type C Using Quantitative Proteomics

carbohydrates, drug development,

There are multiple challenges in developing carbohydrate/cyclodextrin-based drugs that we also face at CarboHyde every day. One is to develop proper analytical techniques, which are especially difficult for biological samples and if the drug is not a single compound but a mixture of components (just like HP-b-CD used in Niemann-Pick C). While HP-b-CD has been promising in vitro and in vivo, a clear understanding of the mechanism(s) of action is lacking.
That being said, we particularly welcome the study disclosing method for a large-scale mass-spectrometry-based proteomic study to evaluate proteome changes upon treatment with these small molecules. Investigation of HP-b-CD treatment was performed where we observe that, although HP-b-CD reduces cholesterol storage, levels of NPC1 and NPC2 are not normalized to control levels. The following changes in the proteome suggest that HP-b-CD promotes exocytosis in this neuron-like model. Utilizing state-of-the-art mass spectrometry analysis, these data demonstrate newly reported changes with pharmacological perturbations related to NPC disease and provide insight into the mechanisms of HP-b-CD as a potential therapeutic.
Antony Cougnoux, (Karolinska Institutet), Melissa Pergande, Fidel Serna-Perez, and Stephanie Cologna (University of Illinois Chicago)

See the full article here: Investigation of 2-Hydroxypropyl-β-Cyclodextrin Treatment in a Neuronal-Like Cell Model of Niemann–Pick Type C Using Quantitative Proteomics

Great learning opportunity presented by Ajay Semalty on CD complexes in general

Today's cyclodextrin,

Great learning opportunity presented by Ajay Semalty on CD complexes in general. Here you can learn about CD chemistry and basic properties and techniques to make complexes, and analyze them shown in several practical examples. Extremely informative!
Please share and spread the word.

Cyclodextrin Complexes I
Cyclodextrin Complexes II

Fully Symmetric Cyclodextrin Polycarboxylates: How to Determine Reliable Protonation Constants from NMR Titration Data

carbohydrates,

We are happy to share the most recent paper of Milo Malanga Ph.D. on acid-base properties of cyclodextrin, particularly Sugammadex and its analogs developed together with Semmelweis University (Szabolcs Béni, Eszter Kalydi), Richter Gedeon Nyrt. / Magyarország (Zoltán Szakács), Gábor Benkovics PhD and Dóra Ujj.
The pH-dependent charge of these compounds can now be accurately calculated in support of designing new analytical methods to exploit their charge-dependent molecular recognition, such as in cyclodextrin-aided chiral capillary electrophoresis.


Molecular docking approach for prediction of enantioseparation of miconazole using cyclodextrin derivatives as chiral selector

Today's cyclodextrin, ,

I have spent several years studying the chiral recognition of CDs and always considered that selectivity is unpredictable and needs to be tested. In the paper of Jenderal Soedirman University (Ainaya Halwa Lathufa, Uyi Sulaeman, et al.) and Hassan Aboul-Enein enatioseparation of miconazole with molecular docking is predicted using CD derivatives such as sulfated-β-cyclodextrin, hydroxypropyl-β-cyclodextrin, and hydroxypropyl-γ-cyclodextrin as chiral selectors.

See the full article here.

The problem is that all these CDs are composites consisting of hundreds of different specific molecules, which makes proper modeling, so to say, “challenging.” But what do you think?

If you want to vote, click on the link below!

https://www.linkedin.com/posts/tamassohajda_cyclodextrin-chiral-analyticalchemistry-activity-7001422316689608704–S6w?utm_source=share&utm_medium=member_desktop